Oil tank lifting device for spark erosion machine

Abstract

The application discloses an oil groove lifting device of an electric spark forming machine, which comprises an oil groove assembly, a lifting mechanism and a same-motion mechanism. The oil groove assembly comprises a first groove body, a second groove body and a third groove body arranged in sequence from low to high, and the second groove body and the third groove body can be lifted relative to the first groove body. The lifting mechanism is arranged on the first groove body, is connected with the third groove body and drives the third groove body to lift. The same-motion mechanism is movably connected with the first groove body, the second groove body and the third groove body, and the second groove body and the third groove body are synchronously lifted through the same-motion mechanism in the lifting process of the third groove body. In the lifting process of the third groove body driven by the lifting mechanism, the second groove body and the third groove body are synchronously lifted through the same-motion mechanism, the displacement cumulative error of the second groove body and the third groove body is eliminated, there is no relative speed difference between the second groove body and the third groove body, and the stability and reliability of the lifting of the oil groove assembly are ensured.

Description

Technical Field

[0001] This application relates to the field of electrical discharge machining (EDM) technology, and more particularly to an oil tank lifting device for an EDM machine. Background Technology

[0002] Electrical discharge machining (EDM) machines are equipped with a dedicated oil tank for holding the working fluid. Because lift-type oil tanks are suitable for processing workpieces of varying heights, modern EDM machines typically use lift-type oil tanks. Traditional three-section lift-type oil tanks often use a single power source (such as a hydraulic cylinder) to directly drive the lifting of one section, which is then driven by a chain or wire rope to lift the remaining sections. However, existing technology suffers from the following problems: the sections operate asynchronously, leading to speed differences and cumulative displacement errors between adjacent sections during lifting, affecting the stability and reliability of the lift-type oil tank's movement. Summary of the Invention

[0003] This application provides an oil tank lifting device for an electrical discharge machining (EDM) machine to solve the problems existing in related technologies. The technical solution is as follows: This application provides an oil tank lifting device for an electrical discharge machining (EDM) machine, comprising: The oil tank assembly includes a first tank, a second tank, and a third tank arranged sequentially from low to high, wherein the second tank and the third tank are capable of rising and falling relative to the first tank. A lifting mechanism is provided on the first trough, and the lifting mechanism is connected to the third trough, and the lifting mechanism drives the third trough to rise and fall; The synchronous movement mechanism is movably connected to the first, second, and third tanks. During the lifting and lowering of the third tank, the second and third tanks are lifted and lowered synchronously through the synchronous movement mechanism.

[0004] In one embodiment, the co-movement mechanism includes a first co-movement bar and a second co-movement bar arranged intersecting each other, with the middle portion of the first co-movement bar rotatably connected to the middle portion of the second co-movement bar; along the length direction of the third groove, a first sliding groove is formed on the third groove, and the top ends of the first co-movement bar and the second co-movement bar are each connected to a first bolt-type roller needle bearing, and the rollers of the two first bolt-type roller needle bearings are embedded in the first sliding groove and can roll along the first sliding groove.

[0005] In one embodiment, the co-movement mechanism further includes a third co-movement bar and a fourth co-movement bar arranged intersecting each other, with the middle portion of the third co-movement bar rotatably connected to the middle portion of the fourth co-movement bar; a second bolt-type roller needle bearing is connected to the top of the third co-movement bar and the bottom end of the first co-movement bar, and a third bolt-type roller needle bearing is connected to the top of the fourth co-movement bar and the bottom end of the second co-movement bar; a second sliding groove is formed on the second groove along the length direction of the second groove, and the rollers of the second bolt-type roller needle bearing and the third bolt-type roller needle bearing are embedded in the second sliding groove and can roll along the second sliding groove.

[0006] In one embodiment, the co-movement mechanism further includes a fixed seat, which is fixed to the first groove. The bottom end of the third co-movement bar is rotatably connected to the fixed seat via a rotating shaft. A rolling seat is fixed on the first groove, and a third sliding groove is formed on the rolling seat. A fourth bolt-type roller needle bearing is connected to the bottom of the fourth co-movement bar. The roller of the fourth bolt-type roller needle bearing is embedded in the third sliding groove and can roll along the third sliding groove.

[0007] In one embodiment, the lifting mechanism includes a motor and a lifting transmission assembly. The motor is mounted on the first trough and connected to the lifting transmission assembly. The lifting transmission assembly is connected to the third trough, and the motor drives the third trough to rise and fall through the lifting transmission assembly.

[0008] In one embodiment, the lifting transmission assembly includes a chain and multiple sprockets, all of which are rotatably connected to the first groove. The chain is sequentially wound around the multiple sprockets to form a closed loop. The output end of the motor is connected to one of the sprockets, and the chain is connected to the third groove.

[0009] In one embodiment, a connecting plate is fixed on the chain, the connecting plate is connected to the third groove, and the chain drives the third groove to rise and fall through the connecting plate.

[0010] In one embodiment, a guide groove is provided along the height direction of the first groove, and the connecting plate moves along the guide groove.

[0011] The advantages or beneficial effects of the above technical solutions include at least the following: The oil tank lifting device of the EDM forming machine of this application includes an oil tank assembly, a lifting mechanism, and a synchronous mechanism. Because of the synchronous mechanism, during the lifting process of the third tank, the second and third tanks can be raised and lowered synchronously, eliminating the cumulative displacement error between the second and third tanks and ensuring no relative speed difference between them, thus guaranteeing the stability and reliability of the oil tank assembly's lifting.

[0012] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0013] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0014] Figure 1 This is a schematic diagram of the oil tank lifting device of an electrical discharge machining (EDM) machine. Figure 2 for Figure 1 A cross-sectional view along the AA direction; Figure 3 This is a schematic diagram of the synchronous mechanism; Figure 4 for Figure 3 A cross-sectional view along the BB direction; Figure 5 for Figure 3 A cross-sectional view along the CC direction; Explanation of reference numerals in the attached figures: 1. Oil tank assembly; 2. Lifting mechanism; 3. Synchronous movement mechanism; 11. First tank body; 12. Second tank body; 13. Third tank body; 21. Motor; 22. Lifting transmission assembly; 221. Chain; 222. Sprocket; 23. Connecting plate; 24. Guide groove; 31. First synchronous movement bar; 32. Second synchronous movement bar; 33. Rotating shaft; 34. First slide groove; 35. First bolt-type roller needle bearing; 36. Third synchronous movement bar; 37. Fourth synchronous movement bar; 38. Second bolt-type roller needle bearing; 39. Third bolt-type roller needle bearing; 40. Fixed seat; 41. Rolling seat; 42. Third slide groove; 43. Fourth bolt-type roller needle bearing; 44. Second slide groove. Detailed Implementation

[0015] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0016] like Figure 1 As shown in the figure, this application embodiment provides an oil tank lifting device for an EDM machine, including an oil tank assembly 1, a lifting mechanism 2, and a synchronous mechanism 3. The oil tank assembly 1 includes a first tank 11, a second tank 12, and a third tank 13 arranged sequentially from low to high. The second tank 12 and the third tank 13 are capable of lifting and lowering relative to the first tank 11. The lifting mechanism 2 is disposed on the first tank 11 and connected to the third tank 13, driving the third tank 13 to lift and lower. The synchronous mechanism 3 is movably connected to the first tank 11, the second tank 12, and the third tank 13. During the lifting and lowering of the third tank 13, the second tank 12 and the third tank 13 lift and lower synchronously via the synchronous mechanism 3.

[0017] The oil tank lifting device of the EDM machine of this application is equipped with a synchronous mechanism 3. During the lifting process of the lifting mechanism 2 driving the third tank 13 to rise and fall, the synchronous mechanism 3 can make the second tank 12 and the third tank 13 rise and fall synchronously, eliminating the cumulative displacement error between the second tank 12 and the third tank 13, so that there is no relative speed difference between the second tank 12 and the third tank 13, and ensuring the stability and reliability of the lifting of the oil tank assembly 1.

[0018] like Figure 1 As shown, the first slot 11 of this application is fixed and used to install the lifting mechanism 2. To enable the third slot 13 to rise and fall, the lifting mechanism 2 includes a motor 21 and a lifting transmission assembly 22. The motor 21 can be bolted to the first slot 11, and the motor 21 is connected to the lifting transmission assembly 22. The lifting transmission assembly 22 is connected to the third slot 13, and the motor 21 drives the third slot 13 to rise and fall through the lifting transmission assembly 22.

[0019] To enable the motor 21 to drive the third groove 13 to rise and fall via the lifting transmission assembly 22 after startup, the lifting transmission assembly 22 includes a chain 221 and multiple sprockets 222, all of which are rotatably connected to the first groove 11. The chain 221 is sequentially wound around the multiple sprockets 222 to form a closed loop. The output end of the motor 21 is connected to one of the sprockets 222, and the chain 221 is connected to the third groove 13.

[0020] Specifically, the output end of motor 21 is connected to one of the sprockets 222, and after starting, motor 21 can drive the sprocket 222 connected to it to rotate. The remaining sprockets 222 are rotatably connected to the first groove 11 via a rotating shaft. When motor 21 drives the sprocket 222 connected to it to rotate, the sprocket 222 drives the remaining sprockets 222 to rotate via chain 221, realizing the movement of chain 221. During the movement, chain 221 then drives the third groove 13 connected to it to rise and fall.

[0021] In order to connect the chain 221 to the third groove 13, a connecting plate 23 is fixed to the chain 221 by screws. The connecting plate 23 is connected to the third groove 13 by screws, and the chain 221 drives the third groove 13 to rise and fall through the connecting plate 23.

[0022] like Figure 1 As shown, in order to limit the movement of the connecting plate 23 and enable the third groove 13 to rise and fall along a predetermined path, a guide groove 24 is provided along the height direction of the first groove 11, and the connecting plate 23 moves along the guide groove 24. In one embodiment, a guide rod can be fixed to the connecting plate 23 with screws, and the guide rod is placed in the guide groove 24 for guidance. In other embodiments, a guide plate can also be fixed to the connecting plate 23 with screws, and the guide plate is placed in the guide groove 24 for guidance.

[0023] Since the chain 221 is connected to the third groove 13, it can only drive the third groove 13 to rise and fall. Therefore, the third groove 13 needs to drive the second groove 12 to rise and fall synchronously through the synchronous mechanism 3 during the rising and falling process.

[0024] like Figures 1 to 5 As shown, to enable the second groove 12 and the third groove 13 to move synchronously, the co-movement mechanism 3 includes a first co-movement bar 31 and a second co-movement bar 32 arranged intersecting each other. The middle part of the first co-movement bar 31 and the middle part of the second co-movement bar 32 are rotatably connected by a rotating shaft 33. Along the length direction of the third groove 13, a first sliding groove 34 is formed on the third groove 13. The top ends of the first co-movement bar 31 and the second co-movement bar 32 are each connected to a first bolt-type roller needle bearing 35. The rollers of the two first bolt-type roller needle bearings 35 are embedded in the first sliding groove 34 and can roll along the first sliding groove 34.

[0025] Furthermore, the co-movement mechanism 3 also includes a third co-movement bar 36 and a fourth co-movement bar 37 arranged intersecting each other. The middle part of the third co-movement bar 36 and the middle part of the fourth co-movement bar 37 are rotatably connected by a rotating shaft 33. The top of the third co-movement bar 36 is connected to the bottom end of the first co-movement bar 31 by a second bolt-type roller needle bearing 38, and the top of the fourth co-movement bar 37 is connected to the bottom end of the second co-movement bar 32 by a third bolt-type roller needle bearing 39. Along the length direction of the second groove 12, a second sliding groove 44 is formed on the second groove 12. The rollers of the second bolt-type roller needle bearing 38 and the third bolt-type roller needle bearing 39 are embedded in the second sliding groove 44 and can roll along the second sliding groove 44.

[0026] To facilitate the installation and fixation of the synchronous mechanism 3, the synchronous mechanism 3 further includes a fixing base 40, which is fixed to the first groove 11 by screws. The bottom end of the third synchronous bar 36 is rotatably connected to the fixing base 40 via a rotating shaft 33. Specifically, the fixing base 40 can be an existing double-ear fixing base, with the bottom of the third synchronous bar 36 located between the two ear plates and rotatably connected to the fixing base 40 via the rotating shaft 33.

[0027] A rolling seat 41 is also fixed to the first groove 11 by screws. The rolling seat 41 has a third sliding groove 42. The bottom of the fourth moving bar 37 is connected to a fourth bolt-type roller needle bearing 43. The roller of the fourth bolt-type roller needle bearing 43 is embedded in the third sliding groove 42 and can roll along the third sliding groove 42. Specifically, the fourth bolt-type roller needle bearing 43 can roll and move in the third sliding groove 42 towards or away from the fixed seat 40.

[0028] To connect the bolt-type needle roller bearing to the moving strip, mounting holes can be made on the moving strip. The bolt shank of the bolt-type needle roller bearing passes through the mounting hole on the moving strip and is then tightened with a nut. This bolt-type needle roller bearing is a product currently used in the market.

[0029] In this application, the oil tank lifting device first starts the motor 21 during lifting. The motor 21 drives the third tank 13 to rise and fall via the chain 221. As the third tank 13 rises and falls, the first sliding groove 34 on it rises and falls accordingly, pushing the rollers within the first sliding groove 34 to roll within it. The movement of the third tank 13 is transmitted to the first moving bar 31 and the second moving bar 32 via the first sliding groove 34 and the first bolt-type roller needle bearing 35, causing the intersecting first moving bar 31 and second moving bar 32 to expand or contract around the central rotation axis 33. The movement of the first moving bar 31 and second moving bar 32 is transmitted to the third moving bar 36 and the fourth moving bar 37, ultimately pushing the second tank 12 to rise and fall in complete synchronization with the third tank 13.

[0030] This application, through the setting of the synchronous motion mechanism 3, ensures the synchronous lifting and lowering of the third tank 13 and the second tank 12. Since there is no relative speed difference between the third tank 13 and the second tank 12, jamming, impact, and vibration during the lifting process are avoided, making the lifting and lowering smoother and greatly improving the reliability and service life of the equipment. The synchronous motion mechanism 3 has a compact structure and good transmission rigidity, effectively reducing the uneven wear of seals and other components caused by traditional asynchronous transmissions, thus reducing equipment failure and maintenance costs.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An oil tank lifting device for an electrical discharge machining (EDM) machine, characterized in that, include: The oil tank assembly includes a first tank, a second tank, and a third tank arranged sequentially from low to high, wherein the second tank and the third tank are capable of rising and falling relative to the first tank. A lifting mechanism is provided on the first trough, and the lifting mechanism is connected to the third trough, and the lifting mechanism drives the third trough to rise and fall; The synchronous movement mechanism is movably connected to the first, second, and third tanks. During the lifting and lowering of the third tank, the second and third tanks are lifted and lowered synchronously through the synchronous movement mechanism.

2. The oil tank lifting device of the EDM machine according to claim 1, characterized in that, The co-moving mechanism includes a first co-moving bar and a second co-moving bar arranged intersecting each other, with the middle part of the first co-moving bar rotatably connected to the middle part of the second co-moving bar; along the length direction of the third groove, a first sliding groove is provided on the third groove, and the top ends of the first co-moving bar and the second co-moving bar are each connected to a first bolt-type roller needle bearing, and the rollers of the two first bolt-type roller needle bearings are embedded in the first sliding groove and can roll along the first sliding groove.

3. The oil tank lifting device of the EDM machine according to claim 2, characterized in that, The co-moving mechanism further includes a third co-moving bar and a fourth co-moving bar that are arranged intersectingly. The middle part of the third co-moving bar is rotatably connected to the middle part of the fourth co-moving bar. A second bolt-type roller needle bearing is connected to the top of the third co-moving bar and the bottom end of the first co-moving bar. A third bolt-type roller needle bearing is connected to the top of the fourth co-moving bar and the bottom end of the second co-moving bar. A second sliding groove is formed on the second groove along the length direction of the second groove. The rollers of the second bolt-type roller needle bearing and the third bolt-type roller needle bearing are embedded in the second sliding groove and can roll along the second sliding groove.

4. The oil tank lifting device of the EDM machine according to claim 3, characterized in that, The co-movement mechanism further includes a fixed seat, which is fixed to the first groove. The bottom end of the third co-movement bar is rotatably connected to the fixed seat via a rotating shaft. A rolling seat is fixed on the first groove, and a third sliding groove is provided on the rolling seat. A fourth bolt-type roller needle bearing is connected to the bottom of the fourth co-movement bar. The roller of the fourth bolt-type roller needle bearing is embedded in the third sliding groove and can roll along the third sliding groove.

5. The oil tank lifting device for the EDM machine according to any one of claims 1 to 4, characterized in that, The lifting mechanism includes a motor and a lifting transmission assembly. The motor is mounted on the first trough and connected to the lifting transmission assembly. The lifting transmission assembly is connected to the third trough, and the motor drives the third trough to lift and lower through the lifting transmission assembly.

6. The oil tank lifting device of the EDM machine according to claim 5, characterized in that, The lifting transmission assembly includes a chain and multiple sprockets. The multiple sprockets are rotatably connected to the first groove. The chain is sequentially wound around the multiple sprockets to form a closed loop. The output end of the motor is connected to one of the sprockets. The chain is connected to the third groove.

7. The oil tank lifting device of the EDM machine according to claim 6, characterized in that, A connecting plate is fixed on the chain, and the connecting plate is connected to the third groove. The chain drives the third groove to rise and fall through the connecting plate.

8. The oil tank lifting device of the EDM machine according to claim 7, characterized in that, A guide groove is provided along the height direction of the first groove, and the connecting plate moves along the guide groove.

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