CN217223486U

CN217223486U - Die for producing hydraulic pump body

Info

Publication number: CN217223486U
Application number: CN202220695337.9U
Authority: CN
Inventors: 吴洪昌; 吴洪汝; 陈新伟; 齐凤仓
Original assignee: Shandong Yirun Machinery Co Ltd
Current assignee: Shandong Yirun Machinery Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-08-19
Anticipated expiration: 2032-03-28

Abstract

The utility model belongs to the technical field of the mould, a mould is used in hydraulic pump body production is proposed, including terrace die and die, terrace die and die are the rectangle box structure, be provided with two first terrace die position and the second terrace die position that set up side by side on the terrace die, first terrace die position and second terrace die position are used for producing the two halves part of same hydraulic pump body sand mould, be provided with first terrace die position and second terrace die position one-to-one on the die, be provided with the die cavity baffle between first terrace die position and the second die position, the one end of die is the blind end with die cavity baffle integrated into one piece, the other end of die is provided with two rectangle mouths about die cavity baffle symmetric distribution, the rectangle mouth is sealed with two sealed protruding board that set up on the terrace die and is cooperated, sealed protruding board and first terrace die position and second terrace die position interval distribution. The utility model relates to a rationally, simple structure, be favorable to reducing sand mould gas pocket sand hole and effectively improve pump body product quality, be fit for extensive the popularization.

Description

Die for producing hydraulic pump body

Technical Field

The utility model belongs to the technical field of the sand casting mould, especially, relate to a mould is used in hydraulic pump body production.

Background

The sand casting technology is a casting method for preparing a casting mold by taking sand as a main molding material. Sand casting is the most traditional casting method. The characteristics of sand casting are not limited by the shape, size, complexity and alloy type of parts, the production period is short, and the cost is low, so sand casting is still the most widely applied casting method in casting production. The basic flow of the traditional sand mold casting process comprises the steps of sand preparation, molding, modeling, casting, sand falling, grinding, inspection and the like. The hydraulic pump is a power element of a hydraulic system, and is an element which is driven by an engine or an electric motor, sucks oil from a hydraulic oil tank, forms pressure oil, discharges the pressure oil and sends the pressure oil to an execution element. The hydraulic pump is divided into a gear pump, a plunger pump, a vane pump and a screw pump according to the structure. The pump body part of the hydraulic pump is generally cast, the sand mould for casting the pump body is manufactured by using a molding mould, and the quality of the molding mould has important significance on the molding quality of the pump body.

The sand mould produced by the existing moulding mould has the problems that a plurality of open sand blasting openings are arranged on the edge of the parting surface of the moulding mould, and adjacent cavities are communicated after mould assembly, so that a large number of air holes and air holes are formed in the produced sand mould, and a hydraulic pump body produced after metal liquid is poured into the sand mould has the phenomena of pressure maintaining, air leakage and oil leakage in actual use.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem that foretell molding die exists, provide a reasonable in design, simple structure, be favorable to reducing sand mould gas pocket sand hole and effectively improve a hydraulic pump body mould for production of product quality.

In order to achieve the above purpose, the technical solution adopted by the present invention is that, the present invention provides a hydraulic pump body production mold, including a male mold and a female mold, the male mold and the female mold are both rectangular box structures, the male mold is provided with two first male mold positions and two second male mold positions arranged side by side, the first male mold positions and the second male mold positions are used for producing two half parts of the same hydraulic pump body sand mold, the female mold is provided with first female mold positions and second female mold positions corresponding to the first male mold positions and the second male mold positions one by one, a cavity partition is arranged between the first female mold positions and the second female mold positions, two ends of the cavity partition traverse two sides of the female mold, one end of the female mold is a closed end integrally formed with the cavity partition, the other end of the female mold is provided with two rectangular ports symmetrically distributed about the cavity partition, the rectangular ports are in sealing fit with two sealing male plates arranged on the male mold, the sealing convex plate is distributed with the first convex die position and the second convex die position at intervals.

Preferably, the first male die comprises two U-shaped grooves which are symmetrically distributed, the second male die comprises two U-shaped protrusions which are symmetrically distributed, and the first female die and the second female die respectively comprise countersunk grooves corresponding to the U-shaped grooves and the U-shaped protrusions.

Preferably, the cross section of the cavity partition plate is T-shaped.

Preferably, a plurality of pressure maintaining holes are formed in the first convex die position and the second convex die position.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

1. the utility model provides a pair of mould is used in hydraulic pump body production can improve the independence of two die cavities after the compound die through setting up the die cavity baffle, and in addition the sealed effect of rectangle mouth and sealed flange can effectively improve the shaping quality of this device after penetrating the sand, reasonable in design, simple structure, be favorable to reducing sand mould gas pocket sand hole and effectively improve pump body product quality, be fit for extensive the popularization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is an isometric view of a hydraulic pump body production mold provided in accordance with an exemplary embodiment;

FIG. 2 is an isometric view of a punch provided in accordance with an embodiment;

FIG. 3 is an isometric view of a female mold provided in accordance with an embodiment;

in the above figures:

1. a male die; 11. a first male mold position; 12. a second raised die position; 13. sealing the convex plate; 14. a U-shaped groove; 15. a U-shaped bulge; 16. pressure maintaining holes;

2. a female die; 21. a first cavity die position; 22. a second cavity position; 23. a cavity partition plate; 24. a rectangular opening; 25. a countersink groove.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" used herein refer to the same directions as the drawings, and do not limit the structure.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

In the embodiment, as shown in fig. 1, 2 and 3, the utility model provides a hydraulic pump production mold, which comprises a male mold 1 and a female mold 2, wherein the male mold 1 and the female mold 2 are both rectangular box structures, the male mold 1 is provided with two first male mold positions 11 and two second male mold positions 12 which are arranged side by side, the first male mold positions 11 and the second male mold positions 12 are used for producing two halves of the same hydraulic pump body sand mold, the female mold 2 is provided with a first female mold position 21 and a second female mold position 22 which are in one-to-one correspondence with the first male mold positions 11 and the second male mold positions 12, a cavity partition 23 is arranged between the first female mold position 21 and the second female mold position 22, two ends of the cavity partition 23 traverse two sides of the female mold 2, one end of the female mold 2 is a closed end which is integrally formed with the cavity partition 23, the other end of the female mold 2 is provided with two rectangular ports 24 which are symmetrically distributed about the cavity partition 23, the rectangular ports 24 are in sealing fit with two sealing convex plates 13 arranged on the male mold 1, the sealing convex plate 13 is distributed at intervals with the first convex die position 11 and the second convex die position 12. In the device, the male die 1 and the female die 2 of the rectangular box structure are convenient to be assembled and connected with the automatic core shooter, two half shells can be produced after the male die 1 and the female die 2 are assembled and separated, and a complete sand mold cavity is formed after the two half shells are folded, so that the interior of the cavity can be matched with pouring metal and a core to produce a pump body workpiece. Furthermore, the independence of the two cavities after die assembly can be improved by arranging the cavity partition plate 23; and before the mold is completely closed, a gap between the rectangular opening 24 and the sealing convex plate 13 forms a sand shooting channel, and after the mold is completely closed, the rectangular opening 24 and the sealing convex plate 13 are completely closed to seal the whole cavity, so that the molding quality of the device after sand shooting can be effectively improved, particularly, air hole and sand holes of a sand mold are reduced, and the sand mold is favorable for producing a pump body product with higher quality.

In order to improve the quality of sand mould, the utility model provides a first terrace die 1 includes two U type recesses 14 of symmetric distribution, and second terrace die position 12 includes the protruding 15 of U type of two symmetric distributions, and first die 2 and second die 2 all include with the protruding 15 corresponding counter sink grooves 25 of U type recess 14 and U type. Therefore, the produced two half-shell sand molds are respectively provided with a bulge structure and a groove structure, so that the sealing performance after the half-shell sand molds are combined is improved, the combination stability of the half-shell sand molds is improved, and the pouring quality of the pump body is further improved.

In order to improve the molding quality of the sand mold, the utility model provides a cross section of die cavity baffle 23 is the T-shaped. In this way, the rectangular opening 24 can be better opposite to a sand shooting opening of the automatic core shooter, the sand shooting accuracy is improved, and meanwhile, the stress damage of the two half-shell sand molds at the parting surface position is reduced.

Further, the utility model discloses all be provided with a plurality of pressurize holes 16 on first protruding mould position 11 and second protruding mould position 12. Gravel on the parting surfaces of the male die 1 and the female die 2 can reasonably leave a room by arranging the pressure maintaining hole 16 so as to ensure the stability of die assembly and improve the quality of a sand mold.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may apply the equivalent embodiments modified or modified by the above technical contents disclosed as equivalent variations to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. A die for producing a hydraulic pump body comprises a male die and a female die, and is characterized in that the male die and the female die are both rectangular box structures, the male die is provided with a first male die position and a second male die position which are arranged side by side and used for producing two halves of a same hydraulic pump body sand mold, the female die is provided with a first female die position and a second female die position which are in one-to-one correspondence with the first male die position and the second male die position, a cavity clapboard is arranged between the first female die position and the second female die position, two ends of the cavity clapboard traverse two sides of the female die, one end of the female die is a closed end which is integrally formed with the cavity partition plate, the other end of the female die is provided with two rectangular openings which are symmetrically distributed around the cavity partition plate, the rectangular opening is in sealing fit with two sealing convex plates arranged on the convex die, and the sealing convex plates are distributed with the first convex die position and the second convex die position at intervals.

2. The die for producing the hydraulic pump body according to claim 1, wherein the first male die comprises two symmetrically distributed U-shaped grooves, the second male die comprises two symmetrically distributed U-shaped protrusions, and the first female die and the second female die each comprise countersunk grooves corresponding to the U-shaped grooves and the U-shaped protrusions.

3. The mold for producing a hydraulic pump body according to claim 2, wherein the cavity plate has a t-shaped cross section.

4. The mold for producing a hydraulic pump body according to claim 3, wherein a plurality of pressure maintaining holes are provided in each of the first and second male mold positions.