Positioner and its conductive device
By designing a conductive device on the displacement machine, the conductive part abuts the rotating part and is connected to the grounding cable, the problem of distortion and breaking of the grounding cable during welding is solved, the welding quality is improved and the magnetic field interference is reduced.
Patent Information
- Application Number
- CN202420359306.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-27
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-02-27
AI Technical Summary
When welding the upper housing cover of the compressor, the rotating part of the transformer drives the grounding cable to twist and break, affecting the welding quality and may cause magnetic field interference.
A conductive device is designed, including an installation part and a conductive part. The conductive part abuts with the rotating part of the transformer and is connected to the grounding cable. The conductive part is fixed to the fixing part through the mounting part to avoid rotating with the rotating part.
It effectively avoids twisting and breaking of the grounding cable during welding, reduces magnetic field interference and resistance changes, and ensures welding quality.
Smart Images
Figure CN222725685U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of positioners, in particular to a positioner and a conductive device thereof. Background Art
[0002] At present, when welding the upper shell cover of the compressor, the upper shell cover is usually fixed on the rotating part of the positioner, and the rotating part of the positioner drives the upper shell cover to rotate together, so as to realize the change of the welding position of the upper shell cover. During welding, the welding gun of the welding equipment contacts the upper shell cover, and the grounding cable is connected to the rotating part of the positioner. The welding current flows out from the positive electrode of the power supply, passes through the welding gun, the upper shell cover of the compressor, the rotating part of the positioner and the grounding cable in sequence, and then returns to the negative electrode of the power supply.
[0003] The grounding cable is usually installed inside the positioner and connected to the rotating part. During the welding process, the rotating part rotates and causes the grounding cable to twist or even break. The grounding cable twists into a disc and generates a magnetic field, which interferes with the weak current signal of the machine. The twisting of the grounding cable affects the resistance of the cable conductor, thereby affecting the welding state and quality of the upper shell cover. Utility Model Content
[0004] The utility model aims to provide a positioner and a conductive device thereof to solve the problem that the grounding cable rotates with the rotating part of the positioner when the current positioner cooperates with welding work, causing the grounding cable to be easily twisted and broken, thereby affecting the welding work.
[0005] To solve the above technical problems, based on one aspect of the utility model, the utility model provides a conductive device, which is applied to a positioner, and the positioner has a rotating part and a fixed part, and the rotating part can rotate relative to the fixed part. The conductive device includes a mounting part and a conductive part arranged on the mounting part, and the mounting part is used to be fixed on the fixed part, and the conductive part is used to abut against the rotating part so that the conductive part and the rotating part are electrically connected, and the conductive part is used to be electrically connected to a grounding cable.
[0006] Optionally, the conductive part is columnar, and two axial ends of the conductive part are respectively a first conductive end and a second conductive end, the first conductive end is used to abut against the rotating part, and the second conductive end is used to connect with the grounding cable.
[0007] Optionally, the conductive part can move axially relative to the mounting part, and the conductive device also includes an elastic member, which is arranged on the mounting part and connected to the conductive part, and the direction of the elastic force applied by the elastic member to the conductive part is from the second conductive end to the first conductive end.
[0008] Optionally, the mounting portion has a through hole extending therethrough, the conductive portion is accommodated in the through hole, and the first conductive end extends out of the through hole.
[0009] Optionally, the elastic member is arranged in the through hole.
[0010] Optionally, the inner wall of the through hole extends radially inward to form an extension portion, one end of the elastic member abuts against the extension portion, and the other end of the elastic member abuts against the conductive portion.
[0011] Optionally, the conductive part includes a first conductive column segment and a second conductive column segment connected to each other, the radial dimension of the first conductive column segment is larger than the radial dimension of the second conductive column segment, the elastic member is sleeved on the second conductive column segment, and one end of the elastic member abuts against the mounting part, and the other end of the elastic member abuts against the first conductive column segment.
[0012] Optionally, the conductive portion has a threaded hole, and the threaded hole is used for threaded connection with the grounding cable.
[0013] Optionally, the mounting portion includes an insulating base and a mounting base, the insulating base is mounted on the mounting base, the conductive portion is arranged on the insulating base, and the mounting base is used to be fixed on the fixing portion.
[0014] Based on another aspect of the utility model, the utility model also provides a positioner, which includes:
[0015] Fixed part;
[0016] A rotating part, which can rotate relative to the fixed part and is used to fix the workpiece to be welded;
[0017] A grounding cable, which is connected to the negative terminal of the power supply;
[0018] As for the conductive device as described above, the mounting portion of the conductive device is fixed on the fixing portion, the conductive portion of the conductive device abuts against the rotating portion, and the conductive portion is electrically connected to the grounding cable.
[0019] In summary, in the positioner and its conductive device provided by the utility model, the conductive device includes a mounting portion and a conductive portion arranged on the mounting portion, the mounting portion is used to be fixed on the fixed portion, the conductive portion is used to abut against the rotating portion so that the conductive portion and the rotating portion are electrically connected, and the conductive portion is used to be electrically connected to the grounding cable. In this way, the conductive portion is arranged on the fixed portion through the mounting portion so that the conductive portion is fixed relative to the mounting portion, and the conductive portion and the rotating portion are always abutted to achieve electrical connection, the welding current flows out from the positive electrode of the power supply, passes through the welding gun of the welding equipment, the workpiece to be welded, the rotating portion, the conductive portion and the grounding cable in sequence, and then returns to the negative electrode of the power supply. When the positioner cooperates with the welding work, since the conductive portion will not rotate synchronously with the rotating portion, the grounding cable connected to the conductive portion will naturally not rotate with the rotating portion to cause the grounding cable to twist and break, and of course the grounding cable will not form a disc to generate a magnetic field that affects the weak current signal. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Those skilled in the art should understand that the drawings provided are for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention.
[0021] Figure 1 It is a schematic diagram of a positioner;
[0022] Figure 2 is a schematic diagram of a conductive device according to an embodiment of the utility model;
[0023] Figure 3 It is an axial cross-sectional view of a conductive device according to an embodiment of the utility model.
[0024] In the attached figure:
[0025] 10-rotating part; 20-fixed part; 30-reducer; 40-motor; 50-grounding cable;
[0026] 60-installation portion; 61-insulating base; 611-through hole; 612-extension portion; 62-installation base; 70-conductive portion; 71-first conductive column segment; 72-second conductive column segment; 701-first conductive end; 702-second conductive end; 703-threaded hole; 80-elastic member. DETAILED DESCRIPTION
[0027] In order to make the purpose, advantages and features of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model. In addition, the structure shown in the drawings is often a part of the actual structure. In particular, the emphasis of each drawing is different, and sometimes different scales are used.
[0028] As used in the present invention, the singular forms "one", "an" and "the" include plural objects, the term "or" is usually used to include the meaning of "and / or", the term "several" is usually used to include the meaning of "at least one", and the term "at least two" is usually used to include the meaning of "two or more". In addition, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" and "third" may explicitly or implicitly include one or at least two of the features, "one end" and "the other end" and "the proximal end" and "the distal end" generally refer to two corresponding parts, which not only include the endpoints, and the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. In addition, as used in the present invention, an element disposed on another element generally only indicates that there is a connection, coupling, cooperation or transmission relationship between the two elements, and the connection, coupling, cooperation or transmission between the two elements may be direct or indirect through an intermediate element, and cannot be understood as indicating or implying the spatial position relationship between the two elements, that is, an element may be in any orientation such as inside, outside, above, below or on one side of another element, unless otherwise clearly indicated in the content. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0029] As those skilled in the art can understand, the positioner is a special welding auxiliary equipment, suitable for welding position shifting in rotary work to obtain the ideal processing position and welding speed. It can be used in conjunction with an operating machine and a welding machine to form an automatic welding center, and can also be used for workpiece position shifting during manual work. Figure 1 is a schematic diagram of a positioner, see Figure 1 Typically, the positioner includes a rotating part 10, a fixed part 20, a motor 40 (for example, a servo motor) and a reducer 30. The rotating part 10 can fix the workpiece to be welded (for example, the upper shell cover of the compressor). The rotating part 10 is connected to the output shaft of the motor 40 through the reducer 30, so that the motor 40 drives the rotating part 10 to rotate relative to the fixed part 20, thereby driving the workpiece to be welded to rotate together, and cooperates with a welding gun with a fixed position to perform rotational welding on the workpiece to be welded.
[0030] The grounding cable 50 is arranged inside the positioner, and the two ends of the grounding cable 50 are respectively connected to the rotating part 10 and the negative pole of the power supply. When welding is performed, the welding current flows out from the positive pole of the power supply, passes through the welding gun, the workpiece to be welded, the rotating part 10 and the grounding cable 50 in sequence, and then returns to the negative pole of the power supply. In this way, during the welding process, the rotation of the rotating part 10 will cause the grounding cable 50 to be twisted or even broken, and the grounding cable 50 will generate a magnetic field after being twisted into a disk shape, which interferes with the weak current signal of the machine. The twisting of the grounding cable 50 will affect the resistance of the cable conductor, thereby affecting the welding state and welding quality of the upper shell cover.
[0031] In view of this, this embodiment provides a conductive device applied to the above-mentioned positioner to solve the problem that when the current positioner is used for welding, the grounding cable 50 rotates along with the rotating part 10 of the positioner, causing the grounding cable 50 to be easily twisted and broken, thereby affecting the welding work.
[0032] Figure 2 Schematic diagram of a conductive device according to an embodiment of the present invention. Figure 2 An embodiment of the utility model provides a conductive device applied to the above-mentioned positioner, the conductive device includes a mounting portion 60 and a conductive portion 70 arranged on the mounting portion 60, the conductive portion 70 has a conductive function, the mounting portion 60 has an electrical insulation function, the mounting portion 60 is used to be fixed on the fixed portion 20, so as to achieve position fixation between the conductive portion 70 and the fixed portion 20, and after the conductive portion 70 is fixed on the fixed portion 20 through the mounting portion 60, the conductive portion 70 abuts against the rotating portion 10, so that the conductive portion 70 and the rotating portion 10 are electrically connected, and in addition, the conductive portion 70 is also connected to the grounding cable 50 connected to the negative pole of the power supply. In this way, the conductive part 70 is arranged on the fixed part 20 through the mounting part 60 so that the conductive part 70 is fixed relative to the mounting part 60, and the conductive part 70 and the rotating part 10 are always in contact with each other to achieve electrical connection. The welding current flows out from the positive electrode of the power supply, passes through the welding gun of the welding equipment, the workpiece to be welded, the rotating part 10, the conductive part 70 and the grounding cable 50 in sequence, and then returns to the negative electrode of the power supply. When the positioner cooperates to perform welding work, since the conductive part 70 will not rotate synchronously with the rotating part 10, the grounding cable 50 connected to the conductive part 70 will naturally not rotate with the rotating part 10 to cause the grounding cable 50 to twist and break. Of course, the grounding cable 50 will not form a disc shape to generate a magnetic field that affects the weak current signal, and the grounding cable 50 will not twist to affect the resistance of the cable, thereby ensuring the welding quality of the workpiece to be welded.
[0033] Further, the mounting portion 60 includes an insulating base 61 and a mounting base 62, the insulating base 61 is mounted on the mounting base 62, the insulating base 61 is made of, for example, insulating bakelite, the conductive portion 70 is disposed on the insulating base 61, and the mounting base 62 is used to be fixed on the fixing portion 20. Specifically, the insulating base 61 plays a role in fixing and insulating the conductive portion 70, the insulating base 61 passes through a hole on the mounting base 62, and the insulating base 61 and the mounting base 62 are detachably connected by realizing the two.
[0034] Further, the conductive part 70 is in a columnar shape, and the conductive part 70 can be, for example, a copper column. The axial ends of the conductive part 70 that contact the grounding cable 50 and the rotating part 10 are respectively the first conductive end 701 and the second conductive end 702. The first conductive end 701 is used to abut against the rotating part 10, and the second conductive end 702 is used to connect with the grounding cable 50. In addition, after the columnar conductive part 70 is arranged on the fixed part 20 of the positioner through the mounting part 60, the axial direction of the conductive part 70 is parallel to the rotating axis of the rotating part 10, that is, the axial direction of the conductive part 70 is parallel to the output shaft of the motor 40. In some other embodiments, there is no restriction on the part of the conductive part 70 that abuts against the rotating part 10, and there is no restriction on the part of the conductive part 70 that is connected to the grounding cable 50. For example, one axial end (the first conductive end 701) of the conductive part 70 may abut against the rotating part 10, and the side wall of the conductive part 70 may be connected to the grounding cable 50.
[0035] Figure 3 1 is an axial cross-sectional view of a conductive device according to an embodiment of the present invention. Figure 3 , the conductive part 70 can move axially relative to the mounting part 60, and the conductive device also includes an elastic member 80, which can be a spring, for example. The elastic member 80 is arranged on the mounting part 60, specifically on the insulating base 61, and the elastic member 80 is connected to the conductive part 70, and the elastic force applied by the elastic member 80 to the conductive part 70 is in the direction from the second conductive end 702 to the first conductive end 701. In this way, considering the friction loss between the first conductive end 701 of the conductive part 70 and the rotating part 10, the elastic force applied by the elastic member 80 to the conductive part 70 can always tightly contact the conductive part 70 with the rotating part 10 to ensure normal passage, and can also reduce the contact resistance between the two.
[0036] Furthermore, the mounting portion 60 has a through hole 611 extending therethrough, specifically, the insulating base 61 has the through hole 611, the conductive portion 70 is accommodated in the through hole 611, and the first conductive end 701 extends out of the through hole 611. When the conductive portion 70 of the conductive device is not in contact with the rotating portion 10, under the action of the elastic member 80, the second conductive end 702 is located within the through hole 611. After the conductive device is installed on the positioner and the conductive portion 70 is in contact with the rotating portion 10, the second conductive end 702 will be located outside the through hole 611, so as to facilitate the connection between the grounding cable 50 and the second conductive end 702.
[0037] In this example, the elastic member 80 is disposed in the through hole 611, one end of the elastic member 80 is fixed in the axial position along the through hole 611, and the other end of the elastic member 80 is connected to the conductive part 70, and can be compressed under the force of the conductive part 70. Specifically, the inner wall of the through hole 611 extends radially inward to form an extension part 612, and the extension part 612 extends in the circumferential direction of the through hole 611 in an annular shape, one end of the elastic member 80 abuts against the extension part 612, and the other end of the elastic member 80 abuts against the conductive part 70.
[0038] Regarding the way in which the elastic member 80 cooperates with the conductive portion 70, in one embodiment, the conductive portion 70 includes a first conductive column segment 71 and a second conductive column segment 72 connected to each other, the radial dimension of the first conductive column segment 71 is greater than the radial dimension of the second conductive column segment 72, the end of the first conductive column segment 71 away from the second conductive column segment 72 is a first conductive end 701, and the end of the second conductive column segment 72 away from the first conductive column segment 71 is a second conductive end 702, the elastic member 80 is sleeved on the second conductive column segment 72, one end of the elastic member 80 abuts against the mounting portion 60 (for the embodiment in which the elastic member 80 is located in the through hole 611, specifically, the elastic member 80 may abut against the above-mentioned extension portion 612), and the other end of the elastic member 80 abuts against one end of the first conductive column segment 71 toward the second conductive column segment 72.
[0039] Regarding the specific connection method between the grounding cable 50 and the conductive part 70, in one embodiment, the conductive part 70 has a threaded hole 703, and the threaded hole 703 is used for threaded connection with the grounding cable 50. There is no restriction on the location of the threaded hole 703. The threaded hole 703 can be set on the side wall of the conductive part 70, the second conductive end 702 of the conductive part 70 ( Figure 3 shown).
[0040] Although the utility model is disclosed as above with preferred embodiments, the above embodiments are not intended to limit the utility model. For any technician familiar with the art, without departing from the scope of the technical solution of the utility model, the above disclosed technical content can be used to make many possible changes and modifications to the technical solution of the utility model, or modified into equivalent embodiments with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.
Claims
1. A conductive device, applied to a positioner, wherein the positioner has a rotating part and a fixed part, wherein the rotating part can rotate relative to the fixed part, and wherein: The conductive device includes a mounting portion and a conductive portion arranged on the mounting portion, the mounting portion is used to be fixed on the fixing portion, the conductive portion is used to abut against the rotating portion so that the conductive portion and the rotating portion are electrically connected, and the conductive portion is used to be electrically connected to a grounding cable.
2. The conductive device according to claim 1, characterized in that: The conductive part is columnar, and the two axial ends of the conductive part are respectively a first conductive end and a second conductive end. The first conductive end is used to abut against the rotating part, and the second conductive end is used to connect with the grounding cable.
3. The conductive device according to claim 2, characterized in that: The conductive part can move axially relative to the mounting part. The conductive device also includes an elastic member, which is arranged on the mounting part and connected to the conductive part. The direction of the elastic force applied by the elastic member to the conductive part is from the second conductive end to the first conductive end.
4. The conductive device according to claim 3, characterized in that: The mounting portion has a through hole extending therethrough, the conductive portion is accommodated in the through hole, and the first conductive end extends out of the through hole.
5. The conductive device according to claim 4, characterized in that: The elastic member is disposed in the through hole.
6. The conductive device according to claim 5, characterized in that: The inner wall of the through hole extends radially inward to form an extension portion, one end of the elastic member abuts against the extension portion, and the other end of the elastic member abuts against the conductive portion.
7. The conductive device according to claim 3, characterized in that: The conductive part includes a first conductive column segment and a second conductive column segment connected to each other, the radial dimension of the first conductive column segment is greater than the radial dimension of the second conductive column segment, the elastic member is sleeved on the second conductive column segment, and one end of the elastic member abuts against the mounting part, and the other end of the elastic member abuts against the first conductive column segment.
8. The conductive device according to claim 1, characterized in that: The conductive portion has a threaded hole, and the threaded hole is used for threaded connection with the grounding cable.
9. The conductive device according to claim 1, characterized in that: The mounting portion comprises an insulating base and a mounting base, the insulating base is mounted on the mounting base, the conductive portion is arranged on the insulating base, and the mounting base is used to be fixed on the fixing portion.
10. A positioner, characterized in that: include: Fixed part; A rotating part, which can rotate relative to the fixed part and is used to fix the workpiece to be welded; A grounding cable, which is connected to the negative terminal of the power supply; The conductive device according to any one of claims 1 to 9, wherein the mounting portion of the conductive device is fixed to the fixed portion, the conductive portion of the conductive device abuts against the rotating portion, and the conductive portion is electrically connected to the grounding cable.