A conductive turntable

Abstract

The present invention belongs to the field of welding, electric spark, arc and other additive and subtractive material manufacturing technology, and discloses a conductive turntable. It includes a workbench, a mandrel, an electric slip ring, a collector column, and a clamping mechanism; the electric slip ring includes a rotating end and a fixed end, and the mandrel is connected to the rotating end of the electric slip ring; the fixed end of the electric slip ring is connected to the collector column, and a connecting plate is provided at the lower end of the collector column, and a bracket is provided at the lower end of the connecting plate, and the bracket is connected to the fixed plate in the clamping mechanism, and protective plates are provided on the vertical sides of the connecting plate, and the workbench includes a conductive layer, an insulating layer, and a lower workbench; the device has the characteristics of both insulation and tabletop power supply, braking, low power, and energy saving.

Description

Technical Field

[0001] The invention belongs to the field of additive and subtractive material manufacturing technology such as welding, electric spark, electric arc, etc. The invention specifically relates to an energy-saving high-precision rotary table with a table top that can be powered and has insulation performance. Background Art

[0002] The existing turntable in actual use directly connects the circuit to the workpiece, resulting in the problem of wire entanglement during the rotation of the worktable; if the upper worktable is energized and not insulated, the entire component will be energized, posing a safety hazard; usually, the upper and lower worktables need to be connected with screws to maintain strength and rigidity, but metal screws themselves are conductive and cannot be used. If they are replaced with commonly used plastic, nylon and other screws, the table tops can be connected but the rigidity cannot be guaranteed; the ceramic material that is currently more popular on the market can guarantee its rigidity, but the characteristics of ceramics are that they are too rigid and relatively fragile, and the current cost is relatively high, so it is not suitable for connecting screws.

[0003] At the same time, in processes such as welding and EDM, a high-power conductive turntable generally requires 8 cables to operate; but for some small processing needs, such a high-power conductive turntable will make its production cost high and energy consumption high. At present, there is a technical gap in the low-power turntable that can be insulated, powered and braked. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a conductive turntable which has the characteristics of both insulation and tabletop power supply, braking and energy saving.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a conductive turntable, comprising a worktable, a core shaft, an electric slip ring, a collector column, and a clamping mechanism; the electric slip ring comprises a rotating end and a fixed end, and the core shaft is connected to the rotating end of the electric slip ring; the fixed end of the electric slip ring is connected to the collector column, a connecting disk is provided at the lower end of the collector column, a bracket is provided at the lower end of the connecting disk, the bracket is connected to the fixed disk in the clamping mechanism, and a temperature sensor and a cable are provided on the connecting disk; a protective plate is provided on the upper plane of the connecting disk, and the worktable comprises a conductive layer, an insulating layer, and a lower worktable; the conductive layer, the insulating layer, and the lower worktable are connected in order from top to bottom through an insulating connecting device;

[0006] The clamping mechanism includes a fixed plate, a clamping plate, a disc spring group, a hydraulic joint, a brake pad, and a sealing ring; the hydraulic joint is arranged at the bottom of the fixed plate, the brake pad is installed on the connecting flange, the disc spring group is sleeved on the locking sleeve, the screw A passes through the locking sleeve to fix the disc spring group on the clamping plate, and the outer ring of the disc spring group is connected to the fixed plate; the fixed plate is equipped with a sealing ring, wherein the two sealing rings at the upper end are used to seal the clamping plate, and the two sealing rings at the lower end are used to seal the locking sleeve.

[0007] The disc spring group is composed of a plurality of disc springs.

[0008] The conductive layer is provided with a workbench sealing cover and a core shaft; the insulating layer is provided with a sealing plate, an outer sealing ring and an outer sealing ring;

[0009] The insulating connection device includes an insert a, a screw, a plug, an insert b, and an insert c. The plug is arranged in the conductive layer. The screw connected to the plug extends through the conductive layer and the insulating layer to the lower workbench. The insert a is arranged in the insulating layer, and the insert b and the insert c are arranged in the lower workbench.

[0010] Furthermore, the rotating end of the electric slip ring is reversely tightened and screwed into the core shaft through a flat-end set screw.

[0011] Furthermore, the connection plate and the protection plate are made of insulating materials, and have the ability to insulate and withstand high temperatures. The material of the connection plate includes but is not limited to polytetrafluoroethylene.

[0012] Furthermore, the sealing plate and the outer sealing ring are arranged at the bottom of the insulating layer, and the outer sealing ring is embedded in the lower surface of the insulating layer; the screw passes through and threadedly connects the insert a located in the insulating layer and the insert b located in the lower workbench, and an insert c is provided outside the insert b.

[0013] Furthermore, a bearing is provided at the bottom of the lower workbench, and the lower part of the lower workbench is connected to the motor; a shell is provided outside the entire device, and the bottom of the shell is connected to the fixing seat.

[0014] Furthermore, a spring pad is provided at the bottom of the screw.

[0015] Furthermore, the insert a and the insert b are made of metal.

[0016] Furthermore, the insert c is made of granite, and is crushed granite gravel.

[0017] Furthermore, the insulating layer is made of artificial granite.

[0018] Furthermore, the outer sealing ring is made of metal.

[0019] Furthermore, a shoulder is provided inside the lower workbench outside the insert b, and the shoulder is a T-shaped shoulder for improving the tensile strength of the structure.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) Compared with the prior art, the turntable device provided by the present invention can be both insulated and centrally conductive, and the clamping mechanism also has a braking function. The turntable device provided by the present invention transmits power to the worktable surface through the core shaft through the electric slip ring and the collector column, effectively avoiding the problem of wire entanglement when the worktable rotates. The insulation setting of the insulating layer avoids the body conductivity caused by the table surface conductivity, thereby improving safety. In addition, the present invention only needs three cables to supply power, which has the advantages of energy saving and cost saving.

[0022] (2) The insulating connection device provided in the turntable device provided by the present invention has better rigidity, is economical and cheap, is easy to install, and has better insulation effect than the prior art. The insulating working principle of the insulating connection device is that the current passing through the work surface is transmitted to the metal insert through the screw, and then is blocked by the granite insert to achieve the purpose of insulation.

[0023] (3) The insulating components provided in the turntable device provided by the present invention make the turntable device itself insulated, which can well protect the internal motor and other parts, and can even protect the peripheral structure from being electrified when high voltage power is supplied.

[0024] (7) The turntable provided by the present invention can be powered by the upper surface, and at the same time, the artificial marble layer can play an insulating role. The turntable is mainly used in occasions where the tabletop power supply is required while insulation, braking, energy saving, and other similar environments are required to be relatively harsh. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0026] Figure 1 It is a cross-sectional view of the main surface of a conductive turntable of the present invention.

[0027] Figure 2 It is a cross-sectional view of the insulating connection device of the present invention.

[0028] Figure 3 It is a cross-sectional view of the tightening mechanism device of the present invention.

[0029] In the figure, 1. core shaft, 2. flat end set screw, 3. electric slip ring, 4. collector column, 5. temperature sensor, 6. external cable, 7. cable fixing head, 8. protective plate, 9. connecting plate, 10 bracket, 11. fixing seat, 12. connecting flange, 13. fixing plate, 14. clamping plate, 15. sealing ring, 16. disc spring assembly, 17. hydraulic connector, 18. brake pad, 19. screw plug, 20. screw, 21. insert a, 22. outer sealing ring, 23. outer sealing ring, 24. conductive layer, 25. lower workbench, 26 insert b, 27. insert c, 28. insulating layer, 29. sealing plate, 30. locking sleeve. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0031] Example 1

[0032] A conductive turntable, comprising a worktable, a core shaft 1, an electric slip ring 3, and a collector column 4; the electric slip ring 3 comprises a rotating end and a fixed end, the core shaft 1 is connected to the rotating end of the electric slip ring 3; the fixed end of the electric slip ring 3 is connected to the collector column 4, a connecting plate 9 is provided at the lower end of the collector column 4, a bracket 10 is provided at the lower end of the connecting plate 9, the bracket 10 is connected to a fixed plate 13 in a clamping mechanism, a temperature sensor 5 and an external cable 6 are provided on the connecting plate 9; a protective plate 8 is provided on the upper plane of the connecting plate 9, the worktable comprises a conductive layer 24, an insulating layer 28, and a lower worktable 25; the conductive layer 24, the insulating layer 28, and the lower worktable 25 are connected in order from top to bottom through an insulating connecting device;

[0033] The clamping mechanism includes a fixed plate 11, a clamping plate 14, a disc spring group 16, a hydraulic joint 17, a brake pad 18, and a sealing ring 15; the hydraulic joint 17 is arranged at the bottom of the fixed plate 13, the brake pad is installed on the connecting flange 12, the disc spring group 16 is sleeved on the locking sleeve 30, the screw A passes through the locking sleeve 30 to fix the disc spring group 16 on the clamping plate 14, and the outer ring of the disc spring group 16 is connected to the fixed plate 13; a sealing ring 15 is installed on the fixed plate 13, of which the upper two are used to seal the clamping plate 14, and the lower two groups of locking sleeves 30 are used to seal the screws A, and a sealing ring is provided on the top of the locking sleeve 30.

[0034] The conductive layer 24 is provided with a workbench sealing cover and a core shaft 1; the insulating layer 28 is provided with a sealing plate 29, an outer sealing ring 22, and an outer sealing ring 23;

[0035] The insulating connection device includes an insert a 21, a screw 20, a screw plug 19, an insert b 26, and an insert c 27. The screw plug 19 is arranged in the conductive layer 24. The screw 20 connected to the screw plug 19 extends to the lower workbench 25 through the conductive layer 24 and the insulating layer 28. The insert a 21 is arranged in the insulating layer 24, and the insert b 26 and the insert c 27 are arranged in the lower workbench 25.

[0036] The sealing plate 29 and the outer sealing ring 23 are arranged at the bottom of the insulating layer 28, and the outer sealing ring 22 is embedded in the lower surface of the insulating layer 28; the screw 20 penetrates and threadedly connects the insert a 21 located in the insulating layer 28 and the insert b 26 located in the lower workbench 25, and the insert b 26 is provided with an insert c 27 outside.

[0037] A bearing is provided at the bottom of the lower workbench 25 , and the lower part of the lower workbench 25 is connected to the motor; a shell is provided outside the entire device, and the bottom of the shell is connected to the fixing seat 11 .

[0038] The screw 20 is provided with a spring washer.

[0039] The insert a 21 and the insert b 26 are made of metal.

[0040] The insert c 27 is made of granite gravel.

[0041] The insulating layer 28 is made of artificial granite.

[0042] The outer sealing ring 22 is made of metal.

[0043] The lower workbench 25 is provided with a shoulder outside the insert b 26, and the shoulder is a T-shaped shoulder.

[0044] The overall structure diagram of the device is as follows: Figure 1 As shown: the workbench includes a conductive layer 24, an insulating layer 28, a lower workbench 25, and a Figure 2 The grating ruler and the connecting plate are installed in the inner cavity of the lower workbench 25 to control the rotation of the motor and the connecting plate.

[0045] Power supply device such as Figure 1 As shown, when working, the external cable 6 passes through the fixing seat 11 and is connected to the collector column 4. The collector column 4 is connected to the electric slip ring 3. The rotating end of the electric slip ring 3 is screwed into the core shaft 1 and tightened in the opposite direction through the flat end set screw 2; the current flows into the collector column 4 and the electric slip ring 3 through the external cable 6, and then flows into the core shaft 13, and is transmitted to the entire conductive layer 24. The protective plate 8 and the connecting plate 9 are insulated to prevent the current from being transmitted to other metal parts. A temperature sensor 5 is installed on the connecting plate 9 to detect the working temperature and high temperature alarm to improve safety. The cable fixing head 7 is used to fix and seal the external cable 6.

[0046] Clamping mechanism: The main purpose is to clamp the workbench when the workbench does not need to rotate, so that the structural rigidity can be better and withstand greater torque. It has a fixing function; the clamping mechanism is divided into loosening and locking when working. When loosening: the brake pad 18 is installed on the fixed disk 13. When the workbench needs to rotate, oil pressure is passed to the hydraulic joint 17. The oil pressure is sealed by the sealing ring 15 and will not leak out. It can only enter the cavity between the clamping disk 14 and the fixed disk 13, and push the clamping disk 14 upward. So the brake pad 18 is loosened so that it can rotate freely. When locking: On the contrary, when the hydraulic joint 17 is not passed with oil pressure, the clamping disk 14 is pulled downward by the disc spring group 16, clamping the brake pad 18, so that it cannot rotate freely. A clamping mechanism is added to the turntable to ensure sufficient locking torque and rigidity during cutting.

[0047] The current is transmitted from the conductive layer 24 through the screw 20 to the insert b 26 and is blocked by the insert c 27 to achieve insulation.

[0048] Schematic diagram of the insulation connection device Figure 2 As shown: during operation, the conductive layer 24 is charged, and the current is transmitted to the marble insulating layer metal insert a 21, the lower workbench 25 metal insert b 26 through the screw 20 and the spring washer, and finally blocked by the lower workbench 25 marble insert c 27 insulating layer to achieve the purpose of insulation. The screw plug 19 has a sealing function to prevent liquids from flowing into the screw 20 installation hole and causing a short circuit. The screw 20 is provided with a screw plug 19 at the upper end to prevent possible contamination on the workbench. The outer sealing ring 23 and the outer sealing ring 22 are used to protect the side of the workbench from possible external contamination.

[0049] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made on the basis of the scheme of the present invention are all within the scope of protection claimed by the present invention.

Claims

1. A conductive turntable, characterized in that: The invention comprises a workbench, a core shaft (1), an electric slip ring (3), and a collector column (4); the electric slip ring (3) comprises a rotating end and a fixed end, the core shaft (1) is connected to the rotating end of the electric slip ring (3); the fixed end of the electric slip ring (3) is connected to the collector column (4), a connecting disk (9) is provided at the lower end of the collector column (4), a bracket (10) is provided at the lower end of the connecting disk (9), the bracket (10) is connected to a fixed disk (13) in a clamping mechanism, a temperature sensor (5) and an external cable (6) are provided on the connecting disk (9); a protective plate (8) is provided on the upper plane of the connecting disk (9), the workbench comprises a conductive layer (24), an insulating layer (28), and a lower workbench (25); the conductive layer (24), the insulating layer (28), and the lower workbench (25) are connected in order from top to bottom via an insulating connecting device; The conductive layer (24) is provided with a workbench sealing cover and a core shaft (1); the insulating layer (28) is provided with a sealing plate (29), an outer sealing ring (22), and an outer sealing ring (23); The insulating connection device comprises an insert a (21), a screw (20), a screw plug (19), an insert b (26), and an insert c (27), wherein the screw plug (19) is arranged in the conductive layer (24), and the screw (20) connected to the screw plug (19) extends through the conductive layer (24) and the insulating layer (28) to the lower workbench (25), the insert a (21) is arranged in the insulating layer (28), and the insert b (26) and the insert c (27) are arranged in the lower workbench (25); The sealing plate (29) and the outer sealing ring (23) are arranged at the bottom of the insulating layer (28), and the outer sealing ring (22) is embedded in the lower surface of the insulating layer (28); the screw (20) penetrates and threadedly connects the insert a (21) located in the insulating layer (28) and the insert b (26) located in the lower workbench (25), and the insert c (27) is arranged outside the insert b (26); A bearing is provided at the bottom of the lower workbench (25), and the lower part of the lower workbench (25) is connected to the motor; a shell is provided outside the entire device, and the bottom of the shell is connected to the fixing seat (11).

2. A conductive turntable as claimed in claim 1, characterized in that: The clamping mechanism comprises a fixed plate (13), a clamping plate (14), a disc spring assembly (16), a hydraulic joint (17), a brake pad (18), and a sealing ring (15); the hydraulic joint (17) is arranged at the bottom of the fixed plate (13); the brake pad (18) is installed on the connecting flange (12); the disc spring assembly (16) is sleeved on the locking sleeve (30); a screw A passes through the locking sleeve (30) to fix the disc spring assembly (16) on the clamping plate (14); the outer ring of the disc spring assembly (16) is connected to the fixed plate (13); and a sealing ring (15) is installed on the fixed plate (13).

3. A conductive turntable as claimed in claim 1, characterized in that: A spring washer is provided at the screw (20).

4. A conductive turntable as claimed in claim 1, characterized in that: The insert a (21) and the insert b (26) are made of metal; the insert c (27) is made of granite gravel; the insulating layer (28) is made of artificial granite; and the outer sealing ring (22) is made of metal.

5. A conductive turntable as claimed in claim 1, characterized in that: The lower workbench (25) is provided with a shoulder outside the insert b (26), and the shoulder is a T-shaped shoulder.

Images