Vacuum pump elbow welding positioning platform

Abstract

The utility model relates to the technical field of vacuum pump machining, and one embodiment of the utility model provides a vacuum pump bent pipe welding positioning platform which comprises a base table, a moving seat is arranged at the top of the base table, and a positioning seat is rotationally mounted at the top of the moving seat; through rotation of the worm, the worm gear and the two-way lead screw rotate synchronously, the distance between the two sets of first sliding blocks is further shortened, the multiple sets of fixing plates clamp the inner wall of a bent pipe outwards, the rack is driven to move through rotation of the second lead screw, and therefore rotation of the positioning base is controlled through the gear. Compared with a traditional device, the device can firstly fix the bent pipe through the positioning seat, then butt joint of the bent pipe and the straight pipe is achieved by adjusting the position of the positioning seat, the accuracy and stability are high, and the welding quality is improved. By means of the technical scheme, the technical problem that in the prior art, bent pipe positioning is not stable is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of vacuum pump processing technology, and more specifically, to a vacuum pump bend welding positioning platform. Background Technology

[0002] A vacuum pump is a mechanical device used to extract gas from a closed container or system, thereby creating a vacuum environment. Its core function is to reduce the gas pressure inside the container by physical or chemical means, making it lower than atmospheric pressure to achieve a specific degree of vacuum. It is widely used in industrial production, scientific research, medical equipment, semiconductor manufacturing, food packaging and other fields.

[0003] In vacuum systems, vacuum pumps typically need to be connected to components such as reaction chambers, valves, and filters. Straight pipes may not meet the requirements of complex spatial layouts, so bends (also known as pipe elbows) are welded to straight pipes to change the airflow direction or adjust the pipe layout to adapt to the limitations of equipment installation space or optimize the gas flow path.

[0004] When welding bends, straight pipes are usually fixed. After the straight pipe is fixed, since the two ends of the bend are perpendicular at 90 degrees, the workers need to first place the unwelded end of the bend on the positioning platform, and then rotate the bend to align the end to be welded with the straight pipe. However, when rotating the bend for adjustment, the friction between the bend and the platform causes the contact surface between the bend and the platform to easily shift. This means that even if the welding ends are aligned, the welding surface will still deviate after the support end of the bend is fixed. Therefore, this process needs to be improved and optimized. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a vacuum pump bend welding positioning platform, which solves the technical problem of unstable bend positioning in the prior art.

[0006] According to one aspect, at least one embodiment of this disclosure provides a vacuum pump bend welding positioning platform, including a base, a movable seat disposed on the top of the base, and a positioning seat rotatably mounted on the top of the movable seat;

[0007] A fixing rod is fixedly installed on the top of the positioning seat. A double-acting lead screw is rotatably installed inside the fixing rod. The double-acting lead screw has the same pitch at both ends but opposite thread directions. A slider is movably installed at both ends of the fixing rod. Two sets of sliders are threadedly connected to the upper and lower ends of the double-acting lead screw. A connecting rod is hinged to the outer wall of both sets of sliders. A fixing plate is hinged to the other end of each pair of connecting rods. A worm gear is rotatably installed inside the positioning seat. One end of the worm gear is fixedly connected to the double-acting lead screw. A worm is rotatably installed inside the positioning seat. The worm and the worm gear are connected by a transmission. One end of the worm passes through the outer wall of the positioning seat and is fixedly connected to a knob.

[0008] For example, in at least one embodiment of the present disclosure, a vacuum pump bend welding positioning platform further includes: a lead screw is rotatably installed inside the base, a guide groove is provided on the top of the base, and a rotating rod is rotatably installed on the left side wall of the base, the rotating rod and the lead screw being fixedly connected.

[0009] For example, in at least one embodiment of the present disclosure, a vacuum pump bending pipe welding positioning platform is provided, which further includes: a fixing block is fixedly installed at the bottom of the movable seat, one end of the fixing block passes through the guide groove into the interior of the base, and the fixing block and the lead screw are threaded together.

[0010] For example, in at least one embodiment of the present disclosure, a vacuum pump bend welding positioning platform further includes: a gear rotatably mounted inside the movable seat, one end of the gear penetrating to the top of the movable seat and fixedly connected to the positioning seat.

[0011] For example, in a vacuum pump bend welding positioning platform provided in at least one embodiment of this disclosure, a rack is slidably installed inside the movable seat, and the rack and gear mesh with each other.

[0012] For example, in at least one embodiment of the present disclosure, a vacuum pump bend welding positioning platform further includes: a second lead screw is rotatably mounted inside the movable seat, the second lead screw and a rack are threadedly connected, and a first knob is rotatably mounted on the outer wall of the movable seat, the first knob and the second lead screw are fixedly connected.

[0013] For example, in at least one embodiment of this disclosure, a vacuum pump bend welding positioning platform further includes: a support column fixedly installed on the top of the base, the support column being used to fix a straight pipe, and the positioning seat being used to fix a bend.

[0014] For example, in at least one embodiment of the present disclosure, a vacuum pump bend welding positioning platform is provided, which further includes: a fixed platform one is fixedly installed on the right side of the top of the base, two sets of fixed rollers are fixedly installed on the left side of the fixed platform one, a fixed platform two is fixedly installed on the top of the fixed platform one, and a pressure roller is provided on the left side of the fixed platform two.

[0015] For example, in at least one embodiment of the present disclosure, a vacuum pump bend welding positioning platform further includes: a limiting groove is provided inside the fixed platform 2; a housing is fixedly installed on the right side of the fixed platform 2; a slider 2 is slidably installed inside the housing; and one end of the pressure roller passes through the limiting groove into the interior of the housing and is fixedly connected to the slider 2.

[0016] For example, in a vacuum pump bend welding positioning platform provided in at least one embodiment of this disclosure, the top of the second slider and the inner wall of the outer shell are elastically connected by a spring, two sets of fixed rollers are used to support the straight pipe, and the pressure roller is used to fix the straight pipe.

[0017] The beneficial effects of the embodiments disclosed herein are as follows:

[0018] 1. This utility model utilizes the rotation of a worm gear to synchronize the rotation of the worm wheel and the bidirectional lead screw. Furthermore, the distance between the two sets of sliders is shortened, causing multiple sets of fixing plates to clamp the inner wall of the bent pipe outward. The rotation of the lead screw drives the rack to move, thereby controlling the rotation of the positioning seat through gears. Compared with traditional devices, this device can first fix the bent pipe through the positioning seat, and then achieve the connection between the bent pipe and the straight pipe by adjusting the position of the positioning seat. It has higher precision and stability, avoids welding errors, and improves welding quality.

[0019] 2. This utility model uses a support column and two sets of fixed rollers to support the straight tube and complete the initial fixation. Then, the elastic potential energy of the spring causes the pressure roller to move downward along the limiting groove and apply pressure to the top of the straight tube. Compared with the traditional device, this device has higher operating efficiency. In addition, the design of the limiting groove ensures that the pressure roller moves vertically, avoiding the skew problem common in traditional clamps. This makes the pressure distribution on the contact surface between the straight tube and the fixed roller uniform and avoids deformation of the outer wall of the straight tube. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of the base structure in one embodiment of the present disclosure;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure of the movable base in the embodiment;

[0023] Figure 3 for Figure 1 A schematic diagram of the positioning seat in the embodiment.

[0024] Figure 4 This is a schematic diagram of the structure of the fixing rod in yet another embodiment of this disclosure;

[0025] Figure 5 for Figure 4 A schematic diagram of the structure of the fixing plate in the embodiment;

[0026] Figure 6 for Figure 1 A schematic diagram of the structure of the fixed platform in the embodiment;

[0027] Figure 7 for Figure 6 A schematic diagram of the pressure roller structure in the embodiment;

[0028] Figure 8 This is a schematic diagram of the gear structure in yet another embodiment of this disclosure.

[0029] In the diagram: 1. Base; 11. Support column; 12. Lead screw one; 13. Rotating rod; 14. Guide groove; 2. Moving seat; 21. Fixed block; 22. Gear; 23. Lead screw two; 24. Rack; 25. Knob one; 3. Positioning seat; 31. Fixed rod; 32. Worm gear; 33. Worm; 34. Knob two; 35. Bidirectional lead screw; 36. Slider one; 37. Fixed plate; 38. Connecting rod; 4. Fixed platform one; 41. Fixed roller; 42. Fixed platform two; 43. Outer shell; 44. Limiting groove; 45. Pressure roller; 46. Slider two; 47. Spring. Detailed Implementation

[0030] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0031] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0032] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0033] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0035] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] like Figures 1-8 As shown, it illustrates a vacuum pump bend welding positioning platform according to an embodiment of the present disclosure, including a base 1, a movable seat 2 provided on the top of the base 1, and a positioning seat 3 rotatably mounted on the top of the movable seat 2.

[0037] A fixing rod 31 is fixedly installed on the top of the positioning seat 3. A double-acting screw 35 is rotatably installed inside the fixing rod 31. The upper and lower ends of the double-acting screw 35 have the same pitch but opposite thread directions. Slider 36 is movably installed on both the upper and lower ends of the fixing rod 31. The two sets of sliders 36 are threadedly connected to the upper and lower ends of the double-acting screw 35. The outer walls of the upper and lower sets of sliders 36 are hinged with connecting rods 38. The other end of each pair of connecting rods 38 is hinged with a fixing plate 37. A worm gear 32 is rotatably installed inside the positioning seat 3. One end of the worm gear 32 is fixedly connected to the double-acting screw 35. A worm 33 is rotatably installed inside the positioning seat 3. The worm 33 is connected to the worm gear 32. One end of the worm 33 passes through the outer wall of the positioning seat 3 and is fixedly connected to the knob 34.

[0038] When welding bends and straight pipes is required, the worker first places the straight pipe on the support column 11 and two sets of fixed rollers 41, then clamps the bend onto the positioning seat 3. The worker then rotates knob 34, which drives the worm gear 33 to rotate. The worm gear 33 further drives the worm wheel 32, which in turn drives the bidirectional lead screw 35. The rotation of the bidirectional lead screw 35 causes relative displacement of the two sets of sliders 36 threadedly connected to it. Furthermore, as the two sets of sliders 36 move synchronously, the distance between them decreases. The short length allows slider 36 to push the fixing plate 37 outward via connecting rod 38. As the four sets of fixing plates 37 move outward, they fix the inner wall of the bent pipe. After fixing, the operator can rotate knob 25. Rotation of knob 25 will drive lead screw 23 to rotate. Rotation of lead screw 23 will drive rack 24 to move. As rack 24 moves, gear 22 starts to rotate. The operator can control the rotation of positioning seat 3 by rotating gear 22. Furthermore, with the rotation of positioning seat 3, the operator can accurately connect the bent pipe and the straight pipe.

[0039] The rotation of the worm gear 33 causes the worm wheel 32 and the double-acting screw 35 to rotate synchronously. This further shortens the distance between the two sets of sliders 36, causing multiple sets of fixing plates 37 to clamp the inner wall of the bent pipe outwards. The rotation of the screw 23 drives the rack 24 to move, thereby controlling the rotation of the positioning seat 3 through the gear 22. Compared with traditional devices, this device can first fix the bent pipe through the positioning seat 3, and then adjust the position of the positioning seat 3 to achieve the connection between the bent pipe and the straight pipe. It has higher precision and stability, avoids welding errors, and improves welding quality.

[0040] In some examples, a lead screw 12 is rotatably mounted inside the base 1, a guide groove 14 is provided on the top of the base 1, and a rotating rod 13 is rotatably mounted on the left side wall of the base 1. The rotating rod 13 and the lead screw 12 are fixedly connected.

[0041] In some examples, a fixing block 21 is fixedly installed at the bottom of the movable seat 2. One end of the fixing block 21 passes through the guide groove 14 into the interior of the base 1, and the fixing block 21 and the lead screw 12 are threaded together.

[0042] When the straight pipe is long, the operator can rotate the rotating rod 13. The rotating rod 13 and the lead screw 12 rotate together. The rotation of the lead screw 12 will drive the fixed block 21, which is threadedly connected to it, to move along the guide groove 14, and further control the position of the positioning seat 3.

[0043] In some examples, a gear 22 is rotatably mounted inside the movable seat 2, with one end of the gear 22 extending through to the top of the movable seat 2 and fixedly connected to the positioning seat 3.

[0044] In some examples, a rack 24 is slidably mounted inside the movable seat 2, and the rack 24 and the gear 22 mesh with each other.

[0045] In some examples, a lead screw 23 is rotatably mounted inside the movable seat 2, and the lead screw 23 and the rack 24 are threaded together. A knob 25 is rotatably mounted on the outer wall of the movable seat 2, and the knob 25 and the lead screw 23 are fixedly connected.

[0046] The rotation of the lead screw 23 drives the rack 24 to move. The rack 24 and the gear 22 mesh with each other, allowing the operator to control the rotation of the positioning seat 3, and further enabling the operator to quickly connect the bent pipe and the straight pipe.

[0047] In some examples, a support column 11 is fixedly installed on the top of the base 1. The support column 11 is used to fix the straight pipe, and the positioning seat 3 is used to fix the bent pipe.

[0048] The top of the support column 11 is V-shaped, which is used to limit the straight pipe.

[0049] In some examples, a fixed platform 4 is fixedly installed on the right side of the top of the base 1, two sets of fixed rollers 41 are fixedly installed on the left side of the fixed platform 4, a fixed platform 42 is fixedly installed on the top of the fixed platform 4, and a pressure roller 45 is provided on the left side of the fixed platform 42.

[0050] Two sets of fixed rollers 41 are arranged one in front of the other to support the straight pipe, and the pressure roller 45 is located above the middle of the two sets of fixed rollers 41 to fix and limit the straight pipe.

[0051] In some examples, a limiting groove 44 is provided inside the fixed platform 42, a housing 43 is fixedly installed on the right side of the fixed platform 42, a slider 46 is slidably installed inside the housing 43, and one end of the pressure roller 45 passes through the limiting groove 44 into the inside of the housing 43 and is fixedly connected to the slider 46.

[0052] When fixing the straight tube, the operator can push the pressure roller 45 upward. The pressure roller 45 will move upward along the limiting groove 44, and the slider 46 will move upward. The spring 47 will be compressed. After the operator places the straight tube on the fixing roller 41, the operator releases the pressure roller 45, so that the pressure roller 45 moves downward through the elastic potential energy of the spring 47, limiting one end of the straight tube. Together with the support column 11, the straight tube is fixed.

[0053] In some examples, the top of slider 46 and the inner wall of housing 43 are elastically connected by spring 47, two sets of fixed rollers 41 are used to support the straight tube, and pressure rollers 45 are used to fix the straight tube.

[0054] The straight tube is initially fixed by the support column 11 and two sets of fixed rollers 41. Then, the elastic potential energy of the spring 47 causes the pressure roller 45 to move downward along the limiting groove 44 to apply pressure to the top of the straight tube. Compared with the traditional device, this device has higher operating efficiency. In addition, the design of the limiting groove 44 ensures that the pressure roller 45 moves vertically, avoiding the skew problem common in traditional clamps. This makes the pressure distribution on the contact surface between the straight tube and the fixed roller 41 uniform, and avoids deformation of the outer wall of the straight tube.

[0055] Working principle and usage process of this utility model:

[0056] When welding bends and straight pipes is required, the worker first places the straight pipe on the support column 11 and two sets of fixed rollers 41, then clamps the bend onto the positioning seat 3. The worker then rotates knob 34, which drives the worm gear 33 to rotate. The worm gear 33 further drives the worm wheel 32, which in turn drives the bidirectional lead screw 35. The rotation of the bidirectional lead screw 35 causes relative displacement of the two sets of sliders 36 threadedly connected to it. Furthermore, as the two sets of sliders 36 move synchronously, the distance between them decreases. The short length allows slider 36 to push the fixing plate 37 outward via connecting rod 38. As the four sets of fixing plates 37 move outward, they fix the inner wall of the bent pipe. After fixing, the operator can rotate knob 25. Rotation of knob 25 will drive lead screw 23 to rotate. Rotation of lead screw 23 will drive rack 24 to move. As rack 24 moves, gear 22 starts to rotate. The operator can control the rotation of positioning seat 3 by rotating gear 22. Furthermore, with the rotation of positioning seat 3, the operator can accurately connect the bent pipe and the straight pipe.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A vacuum pump bend welding positioning platform, comprising a base (1), characterized in that: The top of the base (1) is provided with a movable seat (2), and the top of the movable seat (2) is rotatably mounted with a positioning seat (3). A fixed rod (31) is fixedly installed on the top of the positioning seat (3). A double-acting screw (35) is rotatably installed inside the fixed rod (31). The double-acting screw (35) has the same pitch at the upper and lower ends but opposite thread directions. A slider (36) is movably installed at both the upper and lower ends of the fixed rod (31). The two sets of sliders (36) and the double-acting screw (35) are threaded together. A connecting rod (38) is hinged to the outer wall of both sets of sliders (36). A fixed plate (37) is hinged to the other end of each pair of connecting rods (38). A worm gear (32) is rotatably installed inside the positioning seat (3). One end of the worm gear (32) is fixedly connected to the double-acting screw (35). A worm (33) is rotatably installed inside the positioning seat (3). The worm (33) is connected to the worm gear (32) in a transmission connection. One end of the worm (33) passes through the outer wall of the positioning seat (3) and is fixedly connected to the knob (34).

2. The vacuum pump bend welding positioning platform according to claim 1, characterized in that: The base (1) is rotatably mounted with a lead screw (12), and a guide groove (14) is provided on the top of the base (1). A rotating rod (13) is rotatably mounted on the left side wall of the base (1), and the rotating rod (13) and the lead screw (12) are fixedly connected.

3. The vacuum pump bend welding positioning platform according to claim 1, characterized in that: A fixing block (21) is fixedly installed at the bottom of the movable seat (2). One end of the fixing block (21) passes through the guide groove (14) into the interior of the base (1), and the fixing block (21) and the lead screw (12) are threaded together.

4. The vacuum pump bend welding positioning platform according to claim 1, characterized in that: The movable seat (2) is rotatably mounted with a gear (22), one end of which extends through to the top of the movable seat (2) and is fixedly connected to the positioning seat (3).

5. The vacuum pump bend welding positioning platform according to claim 1, characterized in that: A rack (24) is slidably mounted inside the movable seat (2), and the rack (24) and the gear (22) mesh with each other.

6. The vacuum pump bend welding positioning platform according to claim 1, characterized in that: The movable seat (2) is rotatably mounted with a second lead screw (23), which is threadedly connected to a rack (24). The outer wall of the movable seat (2) is rotatably mounted with a first knob (25), which is fixedly connected to the second lead screw (23).

7. The vacuum pump bend welding positioning platform according to claim 1, characterized in that: A support column (11) is fixedly installed on the top of the base (1). The support column (11) is used to fix the straight pipe, and the positioning seat (3) is used to fix the bent pipe.

8. The vacuum pump bend welding positioning platform according to claim 1, characterized in that: A fixed platform (4) is fixedly installed on the right side of the top of the base (1), two sets of fixed rollers (41) are fixedly installed on the left side of the fixed platform (4), a fixed platform (42) is fixedly installed on the top of the fixed platform (4), and a pressure roller (45) is provided on the left side of the fixed platform (42).

9. A vacuum pump bend welding positioning platform according to claim 8, characterized in that: The fixed platform 2 (42) has a limiting groove (44) inside. The fixed platform 2 (42) has a housing (43) fixedly installed on the right side. The sliding block 2 (46) is slidably installed inside the housing (43). One end of the pressure roller (45) passes through the limiting groove (44) into the inside of the housing (43) and is fixedly connected to the sliding block 2 (46).

10. A vacuum pump bend welding positioning platform according to claim 9, characterized in that: The top of the second slider (46) and the inner wall of the outer shell (43) are elastically connected by a spring (47), the two sets of fixed rollers (41) are used to support the straight tube, and the pressure roller (45) is used to fix the straight tube.

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