Vacuum pumping structure of casting mold

Abstract

The utility model belongs to the technical field of casting molds, and particularly relates to a casting mold vacuumizing structure which comprises a frame body, a lower mold and an upper mold and further comprises a vacuumizing assembly installed in the frame body. The first hydraulic rod is installed on the top face of the interior of the frame body, the air suction cylinders are symmetrically installed on the top face of the upper mold, the connecting frame is installed at the extending end of the first hydraulic rod, the first hydraulic rod on the frame body enables the push plate and the upper mold to be placed on the lower mold through the connecting frame, and the first hydraulic rod continues to push the connecting frame; a connecting frame can push a push plate through a limiting wheel, so that the push plate slides in a guide plate of the upper mold, the inclined surface of the push plate jacks up a roller on a top frame, so that the top frame can drive a piston to move upwards, gas in the mold is pumped out through a pumping cylinder, and after the gas is pumped to a limiting position, a cover plate is pulled to block a gas outlet, and the interiors of the upper mold and the lower mold are evacuated; the service life of the die is prolonged, air holes are reduced, and the quality and success rate of castings can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting molds, and in particular relates to a casting mold vacuum pumping structure. Background Art

[0002] In the field of mechanical processing, the use of casting molds is an indispensable tool. Casting molds can precisely process the required equipment parts. However, the casting molds currently used can only shape equipment parts.

[0003] After checking, the public (announcement) number: CN206253589U discloses a casting mold with a cooling structure. This technology discloses "a casting mold with a cooling structure, including a matching casting mold A and a casting mold B, the tops of the casting mold A and the casting mold B are respectively provided with a fixing plate A and a fixing plate B, the fixing plate A and the fixing plate B are fixed by a bolt assembly, and the bottoms of the casting mold A and the casting mold B are respectively provided with a fixing plate C and a fixing plate D, and the casting mold with a cooling structure is disclosed. It can be cooled by passing cooling water while casting, which can greatly reduce the cooling cost of casting, improve casting efficiency, simple structure, reasonable design, easy to use, and has strong practicality and other technical effects";

[0004] The existing casting mold is evacuated internally and the gas in the casting mold is extracted by a vacuum pump, which is troublesome to use. The gas in the mold cannot be automatically extracted after the upper mold and the lower mold are fitted together, and a power source is required to power the vacuum pump, which is inefficient.

[0005] In order to solve the above problems, the present application proposes a casting mold vacuuming structure. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides a casting mold vacuuming structure, which can be placed on the lower mold, and then continue to press down, and the gas in the upper mold and the lower mold can be extracted through the piston, and can avoid the leakage and splashing caused by the gap between the upper mold and the lower mold during casting.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a casting mold vacuuming structure, comprising a frame, a lower mold and an upper mold, and also comprising a vacuuming component installed in the frame;

[0008] The vacuum assembly includes a hydraulic rod installed on the top surface of the frame, a vacuum cylinder symmetrically installed on the top surface of the upper mold, and a connecting frame installed on the protruding end of the hydraulic rod, both side surfaces of the connecting frame are rotatably connected to limiting wheels, the sliding outer surface of the limiting wheel is slidably connected to a push plate, one side surface of the push plate is slidably connected to a roller, the outer side of the roller is rotatably connected to a top frame with a U-shaped structure, a piston is installed in the U-shaped structure of the top frame, a rubber pad is installed on the bottom surface of the piston, and the rubber pad is slidably connected in the vacuum cylinder.

[0009] As a preferred casting mold vacuuming structure of the utility model, the bottom surfaces of the two push plates on the same side are slidably connected with a same guide plate, and the guide plate is installed on the top surface of the upper mold.

[0010] As a preferred casting mold vacuum structure of the utility model, a cover plate is installed on the bottom surface of the piston through a connecting rod, and the diameter of the cover plate is larger than the diameter of the air hole opened on the mold surface.

[0011] As a preferred casting mold vacuum extraction structure of the utility model, the surface of the push plate is provided with a slope, and this slope matches the roller, the surface of the push plate is provided with a sloped groove matching the limiting wheel, and the inclination direction of this sloped groove is opposite to the slope set on the push plate surface.

[0012] As a preferred casting mold vacuum structure of the utility model, it also includes a protective component installed on the outside of the connecting frame, the protective component includes a frame installed on the outside of the connecting frame, a U-shaped structure guard plate installed on the bottom surface of the frame, and a glass plate 1 installed in front of the frame, and glass plates 2 are installed on both sides of the frame.

[0013] As a preferred casting mold vacuum structure of the utility model, the guard plate is gap-connected with the upper mold and the lower mold.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. On this basis, an evacuation component is added. The hydraulic rod on the frame is used to place the push plate and the upper mold on the lower mold through the connecting frame, and then the hydraulic rod continues to push the connecting frame, so that the connecting frame can push the push plate through the limiting wheel, so that the push plate slides in the guide plate of the upper mold, and the inclined surface of the push plate lifts the roller on the top frame, so that the top frame can drive the piston to move upward, so that the gas in the mold is extracted through the vacuum cylinder, and after being extracted to the limit position, the cover plate is pulled to block the air outlet, so that the interior of the upper mold and the lower mold is evacuated, the mold life is increased, the generation of pores is reduced, and the quality and success rate of castings can be improved;

[0016] 2. At the same time, a protective component is added on this basis. When the connecting part drives the upper mold to move, it will drive the frame so that the frame can drive the guard plate to stick to the outside of the upper mold and the lower mold to avoid splashing caused by the squeezing of the upper mold and the lower mold to accidentally injure workers, and the operation status can be easily observed through the glass plate 1 and glass plate 2 in the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the vacuum assembly in the utility model;

[0020] Figure 3 It is a cross-sectional view of the upper mold in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the protective component in the utility model.

[0022] In the figure:

[0023] 1. Frame;

[0024] 2. Vacuum assembly; 201. Hydraulic rod 1; 202. Vacuum cylinder; 203. Connecting frame; 204. Limiting wheel; 205. Push plate; 206. Roller; 207. Top frame; 208. Piston; 209. Rubber pad; 210. Cover plate; 211. Guide plate;

[0025] 3. Protective assembly; 301. Frame; 302. Guard plate; 303. Glass plate 1; 304. Glass plate 2;

[0026] 4. Lower mold;

[0027] 5. Install the mold. DETAILED DESCRIPTION

[0028] 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.

[0029] Example 1

[0030] like Figure 1-Figure 4 As shown;

[0031] A casting mold vacuum structure comprises a frame 1, a lower mold 4 and an upper mold 5.

[0032] In this embodiment: after checking the public (announcement) number: CN206253589U discloses a casting mold with a cooling structure, and this technology discloses "a casting mold with a cooling structure, including a matching casting mold A and a casting mold B, the tops of the casting mold A and the casting mold B are respectively provided with a fixing plate A and a fixing plate B, the fixing plate A and the fixing plate B are fixed by a bolt assembly, and the bottoms of the casting mold A and the casting mold B are respectively provided with a fixing plate C and a fixing plate D, and the casting mold with a cooling structure is disclosed, which can be cooled by passing cooling water while casting, which can greatly reduce the cooling cost of casting, improve casting efficiency, simple structure, reasonable design, easy to use, and has strong practicality and other technical effects";

[0033] The existing casting mold is evacuated internally and the gas in the casting mold is extracted by a vacuum pump, which is troublesome to use. The gas in the mold cannot be automatically extracted after the upper mold and the lower mold are fitted together. Moreover, a power supply is required to power the vacuum pump, which has low efficiency. In terms of actual use, this problem is obviously a real problem that is difficult to solve. Therefore, in order to solve this technical problem, an evacuation component 2 and a protective component 3 are added to the application document.

[0034] According to the above content, in order to automatically evacuate the casting mold during casting, it also includes a vacuum assembly 2 installed in the frame 1; the vacuum assembly 2 includes a hydraulic rod 201 installed on the top surface of the frame 1, a vacuum cylinder 202 symmetrically installed on the top surface of the upper mold 5, and a connecting frame 203 installed on the protruding end of the hydraulic rod 201, and both side surfaces of the connecting frame 203 are rotatably connected to the limiting wheels 204, and the sliding outer surface of the limiting wheel 204 is slidably connected to the push plate 205, and the surface of one side of the push plate 205 is slidably connected to the roller 206, and the outer side of the roller 206 is rotatably connected to the top frame 207 of a U-shaped structure, and a piston 208 is installed in the U-shaped structure of the top frame 207, and a rubber pad 209 is installed on the bottom surface of the piston 208, and the rubber pad 209 is slidably connected in the vacuum cylinder 202.

[0035] In this embodiment: the hydraulic rod 201 on the frame 1 places the push plate 205 and the upper mold 5 on the lower mold 4 through the connecting frame 203, and then the hydraulic rod 201 continues to push the connecting frame 203, so that the connecting frame 203 can push the push plate 205 through the limiting wheel 204, so that the push plate 205 slides in the guide plate 211 of the upper mold 5, and the inclined surface of the push plate 205 lifts the roller 206 on the top frame 207, so that the top frame 207 can drive the piston 208 to move upward, so that the gas in the mold is extracted through the vacuum cylinder 202, and after being extracted to the limit position, the interior of the upper mold 5 and the lower mold 4 are evacuated, thereby increasing the mold life, reducing the generation of pores, and improving the quality and success rate of castings.

[0036] In an optional embodiment: the bottom surfaces of the two push plates 205 on the same side are slidably connected to the same guide plate 211 , and the guide plate 211 is installed on the top surface of the upper mold 5 .

[0037] In this embodiment: the push plate 205 can be limited by the guide plate 211, and the hydraulic rod 201 can also drive the upper mold 5 to move through the connecting piece, the push plate 205, and the guide rod. The cross-shaped groove on the surface of the guide plate 211 can limit the push plate 205 and prevent the push plate 205 from falling off from the guide plate 211.

[0038] In an optional embodiment: a cover plate 210 is installed on the bottom surface of the piston 208 through a connecting rod, and the diameter of the cover plate 210 is larger than the diameter of the air hole opened on the mold surface.

[0039] In this embodiment, when the piston 208 moves to the designated position, the cover plate 210 is pulled to block the air outlet of the upper mold 5, so that the inner cavities of the upper mold 5 and the lower mold 4 are in a vacuum-tight state.

[0040] In an optional embodiment: the surface of the push plate 205 is provided with a slope, and the slope matches the roller 206 , the surface of the push plate 205 is provided with an inclined groove matching the limiting wheel 204 , and the inclined groove is in an opposite direction to the inclined surface provided on the surface of the push plate 205 .

[0041] In this embodiment, the inclined surface of the push plate 205 can push the top frame 207 through the roller 206, so that the top frame 207 drives the piston 208 to move upward.

[0042] According to the above content, in order to prevent splashing caused by leakage at the gap between the upper mold 5 and the lower mold 4 during casting, a protective component 3 is also included which is installed on the outside of the connecting frame 203. The protective component 3 includes a frame 301 installed on the outside of the connecting frame 203, a U-shaped structure guard plate 302 installed on the bottom surface of the frame 301, and a glass plate 1 303 installed in front of the frame 301. Glass plates 2 304 are installed on both sides of the frame 301.

[0043] In this embodiment: when the connecting member drives the upper mold 5 to move, it will also drive the frame 301, so that the frame 301 can drive the guard plate 302 to stick to the outer sides of the upper mold 5 and the lower mold 4, to avoid accidental injuries to workers caused by splashing caused by the squeezing of the upper mold 5 and the lower mold 4, and the operation status can be conveniently observed through the glass plate 1 303 and the glass plate 2 304 in the frame 301.

[0044] In an optional embodiment: the guard plate 302 is gap-connected with the upper mold 5 and the lower mold 4 .

[0045] In this embodiment, the protective plate 302 can shield the gap between the upper mold 5 and the lower mold 4 to avoid splashing during casting and accidentally injuring workers, thereby improving safety in use.

[0046] The working principle and use process of the utility model are as follows: the hydraulic rod 201 on the frame 1 places the push plate 205 and the upper mold 5 on the lower mold 4 through the connecting frame 203, and then the hydraulic rod 201 continues to push the connecting frame 203, so that the connecting frame 203 can push the push plate 205 through the limiting wheel 204, so that the push plate 205 slides in the guide plate 211 of the upper mold 5, and the inclined surface of the push plate 205 lifts the roller 206 on the top frame 207, so that the top frame 207 can drive the piston 208 to move upward, so that the gas in the mold is extracted through the vacuum cylinder 202. , and after it is pulled to the limit position, the cover plate 210 is pulled to block the air outlet, so that the interior of the upper mold 5 and the lower mold 4 is evacuated, the mold life is increased, the generation of pores is reduced, and the quality and success rate of the casting can be improved. When the connecting part drives the upper mold 5 to move, it will drive the frame 301, so that the frame 301 can drive the guard plate 302 to stick to the outer side of the upper mold 5 and the lower mold 4, avoiding the splashing caused by the squeezing of the upper mold 5 and the lower mold 4 to accidentally injure the workers, and the operation status can be conveniently observed through the glass plate 1 303 and the glass plate 2 304 in the frame 301.

[0047] 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 casting mold vacuum structure, comprising a frame (1), a lower mold (4) and an upper mold (5), characterized in that: It also includes an evacuation assembly (2) installed in the frame (1); The vacuum assembly (2) comprises a hydraulic rod (201) mounted on the top surface of the frame (1), a vacuum cylinder (202) symmetrically mounted on the top surface of the upper mold (5), and a connecting frame (203) mounted on the protruding end of the hydraulic rod (201), both side surfaces of the connecting frame (203) are rotatably connected to limit wheels (204), the sliding outer surface of the limit wheel (204) is slidably connected to a push plate (205), one side surface of the push plate (205) is slidably connected to a roller (206), the outer side of the roller (206) is rotatably connected to a top frame (207) with a U-shaped structure, a piston (208) is mounted in the U-shaped structure of the top frame (207), a rubber pad (209) is mounted on the bottom surface of the piston (208), and the rubber pad (209) is slidably connected in the vacuum cylinder (202).

2. The casting mold vacuuming structure according to claim 1, characterized in that: The bottom surfaces of the two push plates (205) on the same side are slidably connected to a same guide plate (211), and the guide plate (211) is mounted on the top surface of the upper mold (5).

3. The casting mold vacuuming structure according to claim 1, characterized in that: A cover plate (210) is installed on the bottom surface of the piston (208) via a connecting rod, and the diameter of the cover plate (210) is larger than the diameter of the air hole opened on the surface of the mold.

4. The casting mold vacuuming structure according to claim 1, characterized in that: The push plate (205) has an inclined surface on its surface, and the inclined surface matches the roller (206). The push plate (205) has an inclined groove on its surface that matches the limiting wheel (204), and the inclined groove has an inclination direction opposite to that of the inclined surface on the push plate (205).

5. The casting mold vacuuming structure according to claim 1, characterized in that: It also includes a protection component (3) installed on the outside of the connecting frame (203), the protection component (3) includes a frame (301) installed on the outside of the connecting frame (203), a U-shaped protective plate (302) installed on the bottom surface of the frame (301), and a glass plate 1 (303) installed in front of the frame (301), and glass plates 2 (304) are installed on both sides of the frame (301).

6. The casting mold vacuuming structure according to claim 5, characterized in that: The guard plate (302) is gap-connected to the upper mold (5) and the lower mold (4).

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