Mesh graphite electrode applied to discharge of precision mold

Abstract

The utility model discloses a mesh graphite electrode applied to discharge of a precision die, which comprises a graphite electrode, a cavity is arranged at the bottom of the graphite electrode, meshes are arranged on the upper surface of the graphite electrode, through holes communicated with the cavity are arranged on the inner surfaces of the meshes, a reinforcing plate is arranged on the outer surface of the lower end of the graphite electrode, and the reinforcing plate is arranged on the outer surface of the lower end of the graphite electrode. The bottom of the graphite electrode is provided with a reinforcing plate, the reinforcing plate is of a frame structure, the inner side wall of the cavity is provided with a top plate connected with the reinforcing plate, and the cavity is internally provided with a supporting mechanism connected with the top plate. The reinforcing plate is arranged in the cavity and used for reinforcing the bottom of the graphite electrode, the top plate matched with the reinforcing plate is arranged, the top plate is supported by the supporting mechanism, the side wall of the cavity is well supported, meanwhile, reinforcing of the bottom of the graphite electrode is achieved, equipment machining is facilitated, and damage is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite electrodes, in particular to a mesh graphite electrode used for precision mold discharge. Background Art

[0002] The existing large and medium-sized mesh graphite electrodes used for processing molds have small and numerous meshes with a small distance between holes, and vents need to be punched at the bottom of the holes, which increases the difficulty of processing the graphite electrodes and cannot meet the EDM (Electrical Discharge Machining) discharge machining requirements in the mold industry.

[0003] Moreover, when the mesh graphite electrode is subjected to EDM discharge machining, electric sparks are generated, which need to be cooled with spark oil. The spark oil vaporizes at high temperature to produce gas. The existing mesh graphite electrode has mesh holes that are not completely drilled through, and the residues and gases generated by machining cannot be removed, which affects the discharge effect and prolongs the EDM machining time, resulting in low machining efficiency.

[0004] The patent number is CN202005004U, and the patent name is a mesh graphite electrode structure used for precision mold discharge. It discloses a device that sets an air avoidance groove at the bottom of the graphite electrode so that the mesh can be drilled smoothly, making it convenient for CNC to process exhaust holes at the bottom of the mesh, meeting the mold industry's demand for EDM discharge processing, and solving the problem that the existing mesh graphite electrode is difficult to excrete residue and exhaust when EDM discharge processing molds. However, due to the setting of the air avoidance groove, the bottom needs to be reinforced for easy processing. For this reason, a mesh graphite electrode used for precision mold discharge is proposed. Utility Model Content

[0005] The utility model aims to provide a mesh graphite electrode used for precision mold discharge, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a mesh graphite electrode used for precision mold discharge, comprising a graphite electrode, a cavity is provided at the bottom of the graphite electrode, a mesh is provided on the upper surface of the graphite electrode, and a through hole connected to the cavity is provided on the inner surface of the mesh, a reinforcement plate is provided on the outer surface of the lower end of the graphite electrode, the reinforcement plate is in a frame structure, top plates connected to the reinforcement plates are respectively provided at the inner side walls of the cavity, and a supporting mechanism connected to the top plate is provided in the cavity.

[0007] According to the above technical solution, the support mechanism includes an outer shell, a connecting sleeve is penetrated through the side wall of the outer shell, and a movable rod is movably provided on the inner surface of the connecting sleeve. The end of the movable rod away from the outer shell is fixedly connected with a connecting plate, and the end surface of the connecting plate is penetrated with a connecting hole, and the connecting plate is fixedly connected to the corresponding top plate through the connecting hole.

[0008] According to the above technical solution, a groove is provided on the end surface of the top plate corresponding to the connecting hole.

[0009] According to the above technical solution, a connecting block is fixedly connected to the inner surface of the shell, an adjusting screw is rotatably provided on the inner surface of the connecting block, the adjusting screws are respectively located inside the movable rod and are threadedly connected to the movable rod, a crown gear is rotatably provided inside the shell, and a gear is coaxially connected to the end of the adjusting screw away from the movable rod, and the gear is meshed with the crown gear.

[0010] According to the above technical solution, the outer circumferential surface of the movable rod is provided with a sliding groove extending in the same direction, and the inner circumferential surface of the connecting sleeve is provided with a sliding block slidably connected to the sliding groove.

[0011] Compared with the prior art, the beneficial effects achieved by the utility model are as follows: the utility model sets a cavity at the bottom of the graphite electrode to facilitate processing and exhaust, sets a reinforcement plate inside the cavity to reinforce the bottom of the graphite electrode, and sets a top plate matched with the reinforcement plate, the top plate is supported by a supporting mechanism, which provides good support for the side walls of the cavity while achieving reinforcement of the bottom of the graphite electrode, facilitating the processing of the equipment and preventing damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model in a top view;

[0015] Figure 3 It is a schematic diagram of the support mechanism structure of the utility model;

[0016] In the figure: 1-graphite electrode, 2-cavity, 3-mesh, 4-reinforcement plate, 5-top plate, 6-housing, 7-connecting sleeve, 8-movable rod, 9-connecting plate, 10-groove, 11-connecting block, 12-adjusting screw, 13-crown gear, 14-gear, 15-slide groove, 16-slider. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3 The utility model provides a technical solution: a mesh graphite electrode used for precision mold discharge, including a graphite electrode 1, such as Figure 2 As shown, a cavity 2 is provided at the bottom of the graphite electrode 1, a mesh 3 is provided on the upper surface of the graphite electrode 1, and a through hole connected to the cavity 2 is provided on the inner surface of the mesh 3, which is convenient for processing the graphite electrode 1 and facilitating the discharge of heat and gas during processing, reducing the processing difficulty and ensuring the processing quality. A reinforcing plate 4 is provided on the outer surface of the lower end of the graphite electrode 1. The reinforcing plate 4 is in a frame structure and is sleeved on the outer side of the graphite electrode 1 to evenly fit the outer surface of the graphite electrode 1. Top plates 5 connected to the reinforcing plates 4 are provided at the inner side walls of the cavity 2, respectively. A supporting mechanism connected to the top plate 5 is provided in the cavity 2, and the supporting mechanism makes the top plate 5 tend to move away from the center of the cavity 2, against the inner wall of the cavity 2, and cooperates with the reinforcing plate 4 to reinforce the graphite electrode 1, and the reinforcement effect is better.

[0019] Specifically, the support mechanism includes a housing 6, such as Figure 3 As shown, the shell 6 is rectangular, and the side wall of the shell 6 is penetrated by a connecting sleeve 7, and the number of the connecting sleeves 7 is four, and the four connecting sleeves 7 are respectively penetrated on the side wall of the shell 6, and the inner surface of the connecting sleeve 7 is respectively movably provided with a movable rod 8, and the movable rod 8 and the corresponding connecting sleeve 7 are extended in the same direction, and the movable rod 8 can slide inside the corresponding connecting sleeve 7, and the ends of the movable rod 8 away from the shell 6 are respectively fixedly connected with connecting plates 9, and the end surfaces of the connecting plates 9 are penetrated by connecting holes, and the connecting plates 9 are fixedly connected to the corresponding top plates 5 through the connecting holes, as shown in FIG. Figure 2 As shown, the top plate 5 and the corresponding connecting plate 9 are fixedly connected by fixing bolts passing through the through holes;

[0020] Specifically, a groove 10 is provided on the end surface of the top plate 5 corresponding to the connection hole, and the nut of the fixing bolt is located inside the groove 10 to prevent the surface of the top plate 5 from bulging and affecting the fit with the inner wall of the cavity 2;

[0021] Specifically, a connection block 11 is fixedly connected to the inner surface of the housing 6, and an adjusting screw 12 is rotatably provided on the inner surface of the connection block 11. Figure 2As shown, the adjusting screw 12 is coaxially arranged with the corresponding movable rod 8, and the adjusting screw 12 is respectively located inside the movable rod 8 and is threadedly connected with the movable rod 8. A crown gear 13 is rotatably arranged inside the housing 6, and a gear 14 is coaxially connected to one end of the adjusting screw 12 away from the movable rod 8, and the gear 14 is meshed with the crown gear 13. A knob coaxially connected with the crown gear 13 is arranged on the outer surface of the housing 6. When the crown gear 13 is driven to rotate by the knob, the crown gear 13 drives the gear 14 to rotate synchronously, and the gear 14 drives the corresponding adjusting screw 12 to rotate. Under the action of the threaded fit, the movable rod 8 moves synchronously with respect to the corresponding connecting sleeve 7, so as to drive the top plate 5 to press against the inner wall of the cavity 2, so as to achieve support reinforcement.

[0022] Specifically, the outer circumference of the movable rod 8 is provided with a slide groove 15 extending in the same direction, and the inner circumference of the connecting sleeve 7 is provided with a slider 16 slidably connected to the slide groove 15. When the movable rod 8 slides relative to the corresponding connecting sleeve 7, the slider 16 slides with the corresponding slide groove 15, and the movable rod 8 and the connecting sleeve 7 do not rotate relative to each other, ensuring that the adjusting screw 12 can rotate relative to the corresponding movable rod 8;

[0023] When the utility model is used, the reinforcement plate 4 is sleeved on the outside of the graphite electrode 1, and the shell 6 is placed inside the cavity 2. When the crown gear 13 is driven to rotate by the rotating knob, the crown gear 13 drives the gear 14 to rotate synchronously, and the gear 14 drives the corresponding adjusting screw 12 to rotate. Under the action of the threaded cooperation, the movable rod 8 moves synchronously relative to the corresponding connecting sleeve 7 to drive the top plate 5 to press against the inner wall of the cavity 2, and then fix the top plate 5 and the reinforcement plate 4.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A mesh graphite electrode for use in precision mold discharge, comprising a graphite electrode (1), characterized in that: A cavity (2) is provided at the bottom of the graphite electrode (1), a mesh (3) is provided on the upper surface of the graphite electrode (1), and a through hole connected to the cavity (2) is provided on the inner surface of the mesh (3), and a reinforcing plate (4) is provided on the outer surface of the lower end of the graphite electrode (1), and the reinforcing plate (4) is in a frame structure, and top plates (5) connected to the reinforcing plate (4) are respectively provided on the inner side walls of the cavity (2), and a supporting mechanism connected to the top plate (5) is provided in the cavity (2).

2. The mesh graphite electrode for precision mold discharge according to claim 1, characterized in that: The support mechanism comprises an outer shell (6), a connecting sleeve (7) is penetrated through the side wall of the outer shell (6), and movable rods (8) are movably provided on the inner surface of the connecting sleeve (7), and the ends of the movable rods (8) away from the outer shell (6) are fixedly connected to connecting plates (9), and the end surfaces of the connecting plates (9) are penetrated by connecting holes, and the connecting plates (9) are fixedly connected to the corresponding top plates (5) through the connecting holes.

3. The mesh graphite electrode for precision mold discharge according to claim 2, characterized in that: A groove (10) is provided on the end surface of the top plate (5) corresponding to the connection hole.

4. The mesh graphite electrode for precision mold discharge according to claim 3 is characterized in that: A connecting block (11) is fixedly connected to the inner surface of the outer shell (6), and an adjusting screw (12) is rotatably provided on the inner surface of the connecting block (11). The adjusting screws (12) are respectively located inside the movable rod (8) and are screwed to the movable rod (8). A crown gear (13) is rotatably provided inside the outer shell (6), and a gear (14) is coaxially connected to one end of the adjusting screw (12) away from the movable rod (8), and the gear (14) is meshed with the crown gear (13).

5. The mesh graphite electrode for precision mold discharge according to claim 4, characterized in that: The outer circumference of the movable rod (8) is provided with a sliding groove (15) extending in the same direction, and the inner circumference of the connecting sleeve (7) is provided with a sliding block (16) slidably connected to the sliding groove (15).

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