Extrusion forming equipment for graphite special-shaped part

Abstract

The utility model relates to the technical field of extrusion forming equipment, and discloses extrusion forming equipment for graphite special-shaped parts, which comprises a rack, a lower die fixedly connected to the middle of the inner bottom wall of the rack, a first hydraulic cylinder fixedly connected to the inner top wall of the rack, and a push plate fixedly connected to the driving end of the first hydraulic cylinder. The corner of the push plate is slidably connected to the outer side of the corner of the rack, a plurality of sliding grooves are formed in the bottom end of the push plate, sliding blocks are slidably connected into the sliding grooves, a plurality of arc-shaped molds are fixedly connected to the bottom ends of the sliding blocks, a rubber bag is installed in a cavity structure formed by the arc-shaped molds, and an oil tank is fixedly connected to one side of the top end of the push plate. According to the forming device, the second hydraulic cylinder is started to push the piston to move downwards, hydraulic oil in the oil tank is squeezed into the rubber bag, the side wall of the rubber bag can expand outwards to push the arc-shaped mold to expand outwards, the side wall of the cylindrical graphite piece is squeezed, and the forming quality of the cylindrical graphite piece is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to extrusion forming equipment technical field especially relates to a graphite special-shaped part's extrusion forming equipment. BACKGROUND

[0002] Graphite special-shaped part refers to the graphite product with irregular shape or non-standard geometric shape, these special-shaped parts are usually customized and processed according to specific industrial needs and application scenarios, for example, graphite crucible, graphite bearing sleeve and other cylindrical graphite parts.

[0003] When the cylindrical graphite part is processed, graphite powder is usually extruded by extrusion forming equipment, when the cylindrical graphite part is extruded, graphite powder is poured into the lower mold of the extrusion forming equipment, and then the upper mold is inserted into the lower mold by the driving assembly on the extrusion forming equipment, so that the graphite powder can be adhered to each other by the downward pressure of the upper mold.

[0004] And the lower mold is improved, and the upper mold is given a new function, so that the graphite powder between the lower molds can be subjected to the lateral pressure of the upper mold when the lower mold is inserted into the lower mold and the downward pressure is applied to the graphite powder, thereby improving the forming quality of the cylindrical graphite part. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides a graphite special-shaped part's extrusion forming equipment, which aims at improving the problem that the graphite powder in the lower mold is only subjected to the longitudinal pressure of the upper mold, and the graphite powder between the lower molds is not subjected to the lateral pressure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a graphite special-shaped part's extrusion forming equipment, comprising:

[0007] The lower mold is fixedly connected to the inner bottom wall of the rack;

[0008] The hydraulic cylinder one is fixedly connected to the inner top wall of the rack and extends out of the top of the rack, and the driving end of the hydraulic cylinder one is fixedly connected with the push plate;

[0009] A plurality of sliding grooves are arranged at the bottom end of the push plate, and a plurality of sliding grooves are slidably connected with sliding blocks inside;

[0010] A plurality of arc-shaped molds are fixedly connected to the bottom end of the sliding block, and a plurality of arc-shaped molds are slidably overlapped with each other;

[0011] The rubber capsule is installed in the space overlapped by the plurality of arc-shaped molds;

[0012] The pressing part is connected to one side of the top end of the push plate, and the pressing part communicates with the rubber capsule to press hydraulic oil into the rubber capsule, so that the rubber capsule can expand outward to push the arc-shaped mold outward to extrude the graphite powder in the lower mold.

[0013] As a further description of the above technical solution:

[0014] The rubber capsule is provided with a cavity, and is made of rubber.

[0015] As a further description of the above technical solution:

[0016] The pressing part comprises an oil tank, a hydraulic cylinder two is fixedly connected to the top end of the oil tank, a piston is fixedly connected to the driving end of the hydraulic cylinder two and penetrates the inner top wall of the oil tank, the piston is slidably connected in the oil tank and is used for pushing the piston to move up and down in the oil tank, a pipeline is communicated with the bottom end of the oil tank, and the other end of the pipeline penetrates the push plate and extends into the rubber capsule.

[0017] As a further description of the above technical solution:

[0018] An air outlet hole is formed in the inner top wall of the oil tank, an oil injection hole is formed in the top end of one side of the oil tank, and a sealing cover is threadedly connected to the outside of the oil injection hole.

[0019] As a further description of the above technical solution:

[0020] The piston is tightly attached to the inner side wall of the oil tank, so that the hydraulic oil in the oil tank can be discharged when the piston moves downward.

[0021] As a further description of the above technical solution:

[0022] The push plate is slidably connected to the outer corner of the rack, and the arc-shaped mold is inserted into the lower mold.

[0023] As a further description of the above technical solution:

[0024] The outer arc surface of the arc-shaped mold on the outer side is provided with a groove, the groove is slidably connected with a protrusion, and the other end of the protrusion is fixedly connected to the inner arc surface of the arc-shaped mold on the inner side.

[0025] The utility model has the advantages of:

[0026] The utility model discloses, start hydraulic cylinder no. 2, promote the piston in the oil tank and move down, extrude the hydraulic oil in the oil tank to the rubber capsule inside through the pipeline, along with the hydraulic oil into the rubber capsule inside, the hydraulic oil in the rubber capsule inside can produce pressure to the lateral wall of rubber capsule, thereby make the lateral wall of rubber capsule can expand outward and push the arc mould and expand outward, realize the extrusion to the lateral wall of cylindrical graphite spare, improve cylindrical graphite spare forming quality. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the perspective view of the utility model;

[0028] Figure 2 It is the sectional view of the oil tank of the utility model;

[0029] Figure 3 It is the sectional view of the push plate of the utility model;

[0030] Figure 4 It is the plug-in schematic view of rubber capsule and lower mould of the utility model;

[0031] Figure 5 It is the perspective view of the arc mould of the utility model;

[0032] Figure 6 It is the plan view of rubber capsule of the utility model.

[0033] Legend:

[0034] 1, rack, 2, rubber capsule, 3, hydraulic cylinder no. 1, 4, hydraulic cylinder no. 2, 5, oil tank, 6, push plate, 7, lower mould, 8, pipeline, 9, piston, 10, arc mould, 11, sliding slot, 12, sliding block. DETAILED DESCRIPTION

[0035] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work belong to the scope of protection of the utility model.

[0036] Reference Figures 1-6 An embodiment provided by the utility model: a kind of extrusion forming equipment of graphite special-shaped part, including rack 1, lower mould 7 is fixedly connected in the bottom wall middle part of rack 1, hydraulic cylinder no. 1 3 is fixedly connected in the top wall of rack 1, and the top of hydraulic cylinder no. 1 3 extends rack 1 top, and push plate 6 is fixedly connected in the drive end of hydraulic cylinder no. 1 3, and the corner of push plate 6 is slidably connected in the corner outside of rack 1, so that hydraulic cylinder no. 1 3 can be more stable when pushing push plate 6 up and down.

[0037] The bottom end of the push plate 6 is provided with a plurality of sliding grooves 11 distributed along the radial direction of the rubber capsule 2. The sliding grooves 11 are internally connected with sliding blocks 12. The sliding grooves 11 and the sliding blocks 12 are both provided with T-shaped structures. The bottom end of the sliding block 12 is fixedly connected with a plurality of arc-shaped molds 10. The outer curved surface of the arc-shaped mold 10 located on the inner side is provided with a groove. The inner side of the groove is slidably connected with a protrusion. The other end of the protrusion is fixedly connected with the inner curved surface of the arc-shaped mold 10 located on the outer side. As shown in the figure, the arc-shaped mold 10 is inserted into the lower mold 7. The cavity structure composed of a plurality of arc-shaped molds 10 is internally installed with a rubber capsule 2. The rubber capsule 2 is provided with a cavity structure. The rubber capsule 2 is made of rubber material. Figure 6 The pressurizing part communicates with the rubber capsule 2 to pressurize the hydraulic oil into the rubber capsule 2, so that the rubber capsule 2 can expand outward to push the arc-shaped mold 10 to expand outward to extrude the graphite powder in the lower mold 7.

[0038] The height of the arc-shaped mold 10 is the same as the height of the rubber capsule 2. When the rubber capsule 2 and the arc-shaped mold 10 are inserted into the lower mold 7, the arc-shaped mold 10 can provide downward pressure to the graphite powder in the lower mold 7. The rubber capsule 2 will not be deformed due to the downward pressure of the push plate 6.

[0039] When it is necessary to extrude and form the cylindrical graphite part, the graphite powder is poured into the lower mold 7. The hydraulic cylinder one 3 is started to push the push plate 6 to drive the arc-shaped mold 10 to move downward, so that the arc-shaped mold 10 enters the lower mold 7 to extrude and form the graphite powder in the lower mold 7, as shown in the figure. Figure 4

[0040] The top end of the push plate 6 is fixedly connected with an oil tank 5. A through hole is formed in the middle of the inner top wall of the oil tank 5. The top end of the oil tank 5 is fixedly connected with a hydraulic cylinder two 4. The driving end of the hydraulic cylinder two 4 is fixedly connected with a piston 9 through the through hole. The piston 9 is slidably connected in the oil tank 5. The side wall of the piston 9 is tightly attached to the inner side wall of the oil tank 5. When the piston 9 moves downward in the oil tank 5, the hydraulic oil in the oil tank 5 will not flow from the gap between the piston 9 and the oil tank 5 to the top end of the piston 9. The bottom end of the oil tank 5 is communicated with a pipeline 8. One end of the pipeline 8 extends into the rubber capsule 2 through the push plate 6.

[0041] After the arc-shaped mold 10 extends into the lower mold 7, the hydraulic cylinder two 4 is started to push the piston 9 in the oil tank 5 to move downward. The hydraulic oil in the oil tank 5 is extruded into the rubber capsule 2 through the pipeline 8. As the hydraulic oil gradually enters the rubber capsule 2, the hydraulic oil in the rubber capsule 2 will generate pressure on the side wall of the rubber capsule 2, so that the rubber capsule 2 can expand outward and push the arc-shaped mold 10 to expand outward (i.e. to move and expand along the radial direction of the rubber capsule 2), so as to extrude the side wall of the cylindrical graphite part and improve the forming quality of the cylindrical graphite part.

[0042] ​The top end of the push plate 6 is fixedly connected with an oil tank 5, an air outlet hole is formed in the top wall of the oil tank 5, when the hydraulic cylinder two 4 pushes the piston 9 to move upward in the oil tank 5, the air in the upper part of the oil tank 5 can be discharged through the air outlet hole, when the hydraulic cylinder two 4 pushes the piston 9 to move downward in the oil tank 5, the air outside the oil tank 5 can enter the upper part of the oil tank 5 through the air outlet hole, so that the piston 9 can move up and down in the oil tank 5.

[0043] An oil injection hole is formed in one side of the oil tank 5, a sealing cover is threadedly connected outside the oil injection hole, the oil injection hole is opened by rotating the sealing cover, then hydraulic oil is injected into the oil tank 5 through the oil injection hole, and the sealing cover is sleeved outside the oil injection hole and tightened to seal the oil injection hole, so that the hydraulic oil in the oil tank 5 does not leak from the oil injection hole.

[0044] When producing and processing a cylindrical graphite part, graphite powder is poured into the lower mold 7, the oil injection hole is opened by rotating the sealing cover, then hydraulic oil is injected into the oil tank 5 through the oil injection hole, the sealing cover is sleeved outside the oil injection hole and tightened to seal the oil injection hole, the hydraulic cylinder one 3 is started to push the push plate 6 to move downward, the arc-shaped mold 10 at the bottom end of the push plate 6 is inserted into the lower mold 7 to extrude the graphite powder in the lower mold 7, the hydraulic cylinder two 4 is started to make the piston 9 slide downward in the oil tank 5, the hydraulic oil in the oil tank 5 is extruded into the rubber capsule 2 through the pipeline 8, as the hydraulic oil gradually enters the rubber capsule 2, the rubber capsule 2 expands outward to push the arc-shaped mold 10 to expand outward, which extrudes the sidewall of the cylindrical graphite part to improve the forming quality of the cylindrical graphite part.

[0045] After the cylindrical graphite part is extruded and formed, the hydraulic cylinder one 3 can be started again to make the push plate 6 move upward and drive the arc-shaped mold 10 to slide out of the lower mold 7, then the cylindrical graphite part is taken out from the lower mold 7.

[0046] The arc-shaped molds 10 are stacked together, there are steps between adjacent arc-shaped molds 10, and the inner sidewall of the extruded and formed cylindrical graphite part has a corresponding protruding structure, when the cylindrical graphite part does not need to be too fine, the cylindrical graphite part can be directly used after being taken out from the lower mold 7, when the cylindrical graphite part needs to be fine, the cylindrical graphite part needs to be polished by using a polishing device after being taken out from the lower mold 7 to polish the protruding structure and burrs on the sidewall of the cylindrical graphite part.

[0047] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. An apparatus for extrusion forming of graphite profiled parts, characterized in that: Comprising A rack (1), a lower mold (7) is fixedly connected to the inner bottom wall of the rack (1); A hydraulic cylinder (3) is fixedly connected to the inner top wall of the rack (1) and extends out of the top of the rack (1), and the driving end of the hydraulic cylinder (3) is fixedly connected with a push plate (6); A plurality of sliding grooves (11) are provided at the bottom end of the push plate (6), and a plurality of sliding blocks (12) are slidably connected in the sliding grooves (11); A plurality of arc-shaped molds (10) are fixedly connected to the bottom end of the sliding block (12), and the plurality of arc-shaped molds (10) are slidably overlapped with each other; A rubber capsule (2) is installed in the space overlapped by the plurality of arc-shaped molds (10); A pressurizing part is connected to one side of the top end of the push plate (6), and the pressurizing part communicates with the rubber capsule (2) to pressurize the hydraulic oil into the rubber capsule (2) to make the rubber capsule (2) expand outward and push the arc-shaped mold (10) to expand outward to extrude the graphite powder in the lower mold (7).

2. The apparatus for extrusion molding of a graphite profile according to claim 1, characterized in that: The rubber capsule (2) is provided with a cavity, and the rubber capsule (2) is made of rubber material.

3. The apparatus for extrusion molding of a graphite profile according to claim 1, characterized in that: The pressurizing part includes an oil tank (5), a hydraulic cylinder (4) is fixedly connected to the top end of the oil tank (5), a piston (9) is fixedly connected to the driving end of the hydraulic cylinder (4) and penetrates the inner top wall of the oil tank (5), the piston (9) is slidably connected in the oil tank (5), and the piston (9) is used to push the piston (9) to move up and down in the oil tank (5), the bottom end of the oil tank (5) is communicated with a pipeline (8), and the other end of the pipeline (8) penetrates the push plate (6) and extends into the rubber capsule (2).

4. The apparatus according to claim 3, wherein: An air outlet hole is formed in the inner top wall of the oil tank (5), an oil inlet hole is formed in one side of the top end of the oil tank (5), and a sealing cover is threadedly connected to the outside of the oil inlet hole.

5. The apparatus for extrusion molding of a graphite profile according to claim 3, characterized in that: The outer side of the piston (9) is tightly attached to the inner side wall of the oil tank (5), so that the hydraulic oil in the oil tank (5) can be discharged when the piston (9) moves downward.

6. The apparatus for extrusion molding of a graphite profile according to claim 1, characterized in that: The push plate (6) is slidably connected to the outer side of the corner of the rack (1), and the arc-shaped mold (10) is inserted into the lower mold (7).

7. The apparatus for extrusion molding of a graphite profile according to claim 1, characterized in that: The outer arc surface of the arc-shaped mold (10) located on the outer side is provided with a groove, a protrusion is slidably connected in the groove, and the other end of the protrusion is fixedly connected to the inner arc surface of the arc-shaped mold (10) located on the inner side.

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