CN215392395U

CN215392395U - Fixed die plate of die casting machine

Info

Publication number: CN215392395U
Application number: CN202120780722.9U
Authority: CN
Inventors: 刘相尚; 潘玲玲; 徐文静; 帅华元
Original assignee: Shenzhen Leadwell Technology Co Ltd
Current assignee: Shenzhen Leadwell Technology Co Ltd
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2022-01-04
Anticipated expiration: 2031-04-16

Abstract

The utility model discloses a fixed die plate of a die casting machine, which is provided with a joint plate surface that is jointed with a movable die plate to form a die cavity, and comprises: the sand core accommodating grooves are formed in the side walls of the periphery of the fixed die plate and used for accommodating the first sand cores and enabling the first sand cores to be connected with the sand box, the space of any one first sand core accommodating groove is gradually increased from inside to outside, and the inner surface of any one first sand core accommodating groove is a smooth curved surface. This fixed die plate sets up the first psammitolite holding tank that gradually enlarges from inside to outside through the lateral wall all around at the fixed die plate for the first psammitolite that it held can be connected with the sand box is firm, and the impact force and the buoyancy of the molten metal when preventing the casting cause the deformation to first psammitolite, thereby guarantee the casting quality of fixed die plate.

Description

Fixed die plate of die casting machine

Technical Field

The utility model relates to the field of casting, in particular to a fixed die plate of a die casting machine.

Background

The movable die plate and the fixed die plate of the die casting machine generally adopt iron castings or steel castings, as shown in fig. 1, the die surfaces of the movable die plate 3 and the fixed die plate 1 are respectively assembled with a movable die and a fixed die, when the movable die plate 3 is driven to lean against the fixed die plate 1 along a guide post 4, the movable die and the fixed die are assembled, and a die cavity is formed between the movable die and the fixed die. The fixed die plate is an important part of a die casting machine, and the deformation degree of the fixed die plate directly influences the precision of a die-cast product in the process that the fixed die plate and the movable die plate are close to form a die cavity and bear the die-casting force. Because the fixed die plate has larger weight, the weight of the fixed die plate is reduced in the design stage, and the capability of resisting extrusion and preventing deformation is also considered, the conventional fixed die plate is of a box-type structure and is manufactured by adopting a casting process. As shown in fig. 2 and 3, lightening holes 12 are provided around the stationary die plate in order to reduce the weight of the stationary die plate, sand cores are filled in the lightening holes 12 during casting, the sand cores in the lightening holes 12 are connected to a sand box through connecting passages 11, and the stationary die plate is formed after casting molten metal. However, the lightening holes 12 are arranged inside the fixed die plate at present, and the connecting passages 11 of the sand core and the sand box in the lightening holes 12 are small relative to the size of the sand core, so that the connection of the sand core and the sand box in the lightening holes 12 is not stable enough, and the shifting of the sand core caused by the impact and the buoyancy of the molten metal can be caused when the molten metal is poured, so that the casting size of the fixed die plate is caused to be wrong. Therefore, the deformation of the fixed template is large, and the qualification rate of the die casting cannot be ensured. And the lightening holes 12 hollowed out inside the fixed mould plate with the box-type structure lead the casting process to be more complicated.

Moreover, when the fixed die is small, the extrusion force on the fixed die plate is more concentrated, the inside of the fixed die plate is hollowed, the effective bearing section of the fixed die plate is relatively weak, and the fixed die plate is easy to deform in the die-casting process.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a fixed die plate for a die casting machine, having a joint plate surface that is joined to a movable die plate to form a die cavity, the fixed die plate including:

a plurality of first sand core accommodating grooves which are arranged on the peripheral side wall of the fixed die plate and are used for accommodating the first sand core and connecting the first sand core with the sand box,

and the space of any first sand core accommodating groove is gradually increased from inside to outside, and the inner surface of any first sand core accommodating groove is a smooth curved surface.

Optionally, the first sand core accommodating grooves in the same one of the pair of opposite side walls of the peripheral side walls are separated by rib plates.

Optionally, on the other pair of opposing sidewalls of the peripheral sidewalls, the first core receiving slots on the same sidewall are in communication with each other by slot spaces on the bottom side, and the slot bottom surfaces are smoothly connected.

Optionally, the slot bottom surface of the first core-receiving slot is outwardly convex on the other pair of opposing side walls.

Optionally, in a cross-section of the stationary platen taken parallel to the joint plate face, contour lines of bottom surfaces of all first sand core receiving grooves are on the same oblong.

Optionally, the core mould further comprises guide pillar holes distributed between the adjacent first sand core accommodating grooves at four corners of the fixed mould plate, and perpendicular to the joint plate surface and penetrating through the fixed mould plate.

Optionally, in another pair of opposite side walls of the peripheral side walls, weight reduction grooves are formed in outer walls of the guide pillar holes at two ends of one side wall.

Optionally, in the other pair of opposite side walls, two ends of the other side wall are connected with a bottom supporting portion, and the bottom supporting portion is provided with a fixing piece installation groove.

Optionally, the sand core receiving slot is centrally located on an opposite side of the engagement panel for receiving and connecting the second sand core to the sand box.

Optionally, the sand core fixing device further comprises a press hole, wherein the press hole penetrates through the fixed die plate perpendicular to the joint plate surface, and the press hole is formed in a projection area of the second sand core accommodating groove in the joint plate surface.

The utility model has the following beneficial effects:

(1) for box fixed die plate, set up gradually crescent first psammitolite holding tank from inside to outside through the lateral wall all around at the fixed die plate for the first psammitolite that it held can be connected with the sand box is firm, and the impact force and the buoyancy of the molten metal when preventing to cast lead to the fact the deformation to first psammitolite, thereby guarantee the casting quality of fixed die plate.

(2) The internal surface of first psammitolite holding tank is smooth curved surface, can make the psammitolite closely laminate rather than the internal surface more easily, improves the psammitolite and connects the degree of stability to after the casting, also clear sand easily.

(3) Compared with the box-type fixed die plate, the support force of the middle part of the box-type fixed die plate is weaker because the lightening holes of the box-type fixed die plate are close to the inner side, and the position and the shape of the lightening holes on the peripheral side wall of the fixed die plate are changed, so that the fixed die plate can be strongly supported by the elliptical annular rib plates, and the integral anti-extrusion capability of the fixed die plate is improved.

(4) The outer wall of the guide pillar hole is also provided with the weight reduction groove, so that the weight of the fixed die plate is further reduced, the wall thickness of the fixed die plate tends to have no large difference through further optimization, and the casting defect is reduced.

Drawings

The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof taken in conjunction with the accompanying drawings.

Fig. 1 is a perspective view showing a stationary platen and a movable platen clamped together;

FIG. 2 is a perspective view showing a box-type fixed die plate;

FIG. 3 is a sectional view showing a box type fixed die plate;

FIG. 4 is a perspective view of a stationary platen according to an embodiment of the present invention;

FIG. 5 is another perspective view of a stationary platen according to an embodiment of the present invention;

FIG. 6 is a side view of a stationary platen according to an embodiment of the present invention;

FIG. 7 is a sectional view taken along line A-A of FIG. 6;

FIG. 8 is a sectional view taken along line B-B of FIG. 7;

fig. 9 is a schematic view showing the connection of the first core-receiving slot to the flask in accordance with the embodiment of the present invention.

Detailed Description

An embodiment of a stationary die plate of a die casting machine according to the present invention will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not necessarily drawn to scale and like reference numerals designate like parts.

As shown in fig. 4, the fixed die plate 1 of the die casting machine of the present embodiment is a square plate body, and the fixed die plate 1 has a joint plate surface 13 that is joined to the movable die plate 3 to form a die cavity, and the joint plate surface 13 is used for mounting a fixed die (not shown). Fig. 5 is a perspective view showing the opposite side of the joint panel including a plurality of first core-receiving slots 14. A plurality of first core-receiving slots 14 are provided in the peripheral side walls (3 side walls 30 are shown in fig. 6) of the stationary platen 1 for receiving a first core 141 and connecting the first core 141 to the flask, and a support member is provided on the flask at a position corresponding to each first core-receiving slot 14, each first core 141 being connected to the corresponding support member. As shown in fig. 9, it is shown that the first sand core 141 received in one of the first sand core receiving slots 14 is connected to a support 21 fixedly extending from the sand box 2.

Specifically, the space of any first core-receiving slot 14 increases gradually from the inside to the outside, and preferably, the inner surface of any first core-receiving slot 14 is a smooth curved surface, and the first core-receiving slots 14 of different side walls are not communicated with each other. Because the space of first psammitolite holding tank 14 increases gradually from inside to outside for the fixed connection of first psammitolite and sand box is more firm, and first psammitolite can not warp because of the buoyancy and the impact force of metal liquid. And the space gradually increased from the inside to the outside also makes the first sand core easy to remove sand after the casting is completed. Because the first sand core receiving grooves 14 of different side walls are not communicated with each other, four diagonal ribs 16 are formed between the two first sand core receiving grooves 14 at the four corners of the fixed die plate to support the fixed die plate.

Fig. 6 is a side view of the stationary mold plate, fig. 7 is a sectional view taken along a line a-a, and fig. 8 is a sectional view taken along a line B-B of fig. 7. as can be seen from fig. 7, this embodiment is provided with two first core-receiving slots 14 on the peripheral side walls, respectively. Because the inner surfaces of first core-receiving slot 14 are both smoothly curved, they are shown in a cross-sectional view a-a with a curved transition 142. This smooth curved surface can make first psammitolite closely laminate rather than being easy when the casting, more helps improving the firm degree of connection, also improves the surface quality of the fixed die plate of casting, and also clears sand easily after the casting is accomplished.

Further, a second core-receiving slot 15 may be included, the second core-receiving slot 15 being centrally located on the opposite side of the engagement panel 13 for receiving and connecting the second core to the flask, and in particular to the support member on the flask, to secure the second core. Preferably, the second core-receiving slot 15 is an oblong slot.

Further, the core molding machine may further include guide post holes 161 distributed between the adjacent first core-receiving grooves 14 at four corners of the fixed mold plate 1, and penetrating through the fixed mold plate 1 perpendicular to the joint plate surface 13. As shown in fig. 7, the guide post holes 161 are located on the areas where the four tilted ribs 16 extend to the corresponding edges of the fixed die plate 1. The guide post hole 161 is for passing a guide post. In particular, the inner surface of the first core receiving groove 14, which is a part of the outer wall of the guide post hole 161, is smoothly protruded toward the inside of the first core receiving groove 14.

Optionally, the first sand core receiving slots in the same one of the pair of opposing side walls of the peripheral side wall are separated by a rib. As shown in fig. 7, between the two first core-receiving slots 14 is a cross web 143 separating the two first core-receiving slots 14. The wall thickness of the whole fixed template tends not to have large difference, and the fixed template can be supported to a certain extent.

Alternatively, on the other pair of opposing side walls of the peripheral side walls, the groove spaces on the groove bottom surface sides of the first core receiving grooves 14 on the same side wall communicate with each other, and the groove bottom surfaces are smoothly connected. As shown in fig. 7, the slot bottoms of the two first core-receiving slots 14 on the upper side wall communicate on both the upper and lower side walls, and likewise the slot bottoms of the two first core-receiving slots 14 on the lower side wall communicate. Because the size of the first sand core accommodating groove 14 on the side is relatively small, the template structure can be stabilized without rib plates, the integrated sand core is easier to manufacture, and the communication part can also be used for penetrating a steel wire rope, so that the hoisting is convenient.

Optionally, the slot bottom surface 144 of the first core-receiving slot 14 is convex outwardly, preferably in the form of a circular arc, on the other pair of opposing side walls. As shown in fig. 7, the slot bottom surface 144 of the first core-receiving slot of the upper sidewall projects upwardly in an arc shape and the slot bottom surface 144 of the first core-receiving slot of the lower sidewall projects downwardly in an arc shape on both the upper and lower sidewalls. And in particular the slot floors 144 of all the first core receiving slots 14 are on the same oblong circular plane centered on the second core receiving slot 15 to form a complete oval annular rib 17, the oval annular rib 17 and the four diagonal ribs 16 and transverse rib 143 all having the function of supporting the stationary platen. The long circular shape means that both ends of the long strip shape are arc shapes protruding outwards.

Optionally, a bottom support portion is connected to two ends of one of the other pair of opposite side walls, and the bottom support portion is provided with a fixing member installation groove for inserting a fixing member (e.g., a bolt) to fix the fixed die plate on the frame. As shown in fig. 5, bottom support portions 18 are connected to both ends of the lower sidewall, and fixing piece mounting grooves 181 are provided at the outer sides of the bottom support portions 18.

Optionally, the outer wall of the guide post hole 161 at both ends of the other side wall of the other pair of opposite side walls is provided with a weight reduction groove. As shown in fig. 5, the weight-reducing grooves 145 are provided on the outer walls of the guide post holes 161 at both ends of the upper side wall, and the weight-reducing grooves 145 further reduce the weight of the stationary platen 1, and make the wall thickness of the entire stationary platen tend not to be greatly different.

Optionally, the sand core casting device further comprises a pressing hole 151, wherein the pressing hole 151 penetrates through the fixed die plate 1 perpendicular to the joint plate surface 13, and the pressing hole 151 is arranged in a projection area of the second sand core accommodating groove 15 on the joint plate surface. As shown in fig. 6, the shot hole 151 is within the projected area of the second core receiving slot 15 at the joint plate surface. The injection holes 151 are used for installing injection barrels, and injection rods in the injection barrels can move telescopically, so that molten metal can be injected into a die cavity between a movable die and a fixed die.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a die plate of die casting machine, has the joint face that forms the mould die cavity with the movable mould board joint, its characterized in that, the die plate includes:

2. The stationary platen of die casting machine according to claim 1,

and on one pair of opposite side walls in the peripheral side walls, the first sand core accommodating grooves in the same side wall are separated by rib plates.

3. The stationary platen of die casting machine according to claim 2,

and on the other pair of opposite side walls in the peripheral side walls, the first sand core accommodating grooves on the same side wall are communicated with the groove space close to the bottom surface side, and the groove bottom surfaces are smoothly connected.

4. The stationary platen of die casting machine as claimed in claim 3,

the groove bottom surface of the first sand core accommodating groove protrudes outward on the other pair of opposite side walls.

5. The stationary platen for a die casting machine as claimed in claim 1, wherein the contour lines of the bottom surfaces of all first core-receiving slots are on the same obround in a cross section of said stationary platen taken parallel to said joint plane surface.

6. The stationary platen for die casting machines as claimed in claim 2, further comprising guide post holes disposed between adjacent ones of said first core-receiving slots at four corners of said stationary platen and penetrating said stationary platen perpendicularly to said joint plate surface.

7. The stationary platen for die casting machines as claimed in claim 6, wherein in the other pair of opposed side walls among said peripheral side walls, the outer wall of the guide post hole at both ends of one of the side walls is provided with a weight-reducing groove.

8. The fixed die plate of the die casting machine as claimed in claim 7, wherein a bottom support portion is attached to both ends of the other of said pair of opposite side walls, said bottom support portion being provided with a fixture mounting groove.

9. The stationary platen for a die casting machine as claimed in claim 1, further comprising a second core-receiving slot centrally disposed on an opposite side of said engagement panel for receiving and connecting said second core to the flask.

10. The stationary platen for a die casting machine as defined in claim 9 further comprising a punch hole penetrating said stationary platen perpendicular to said joint plate face and in the projected area of said second core-receiving slot in said joint plate face.