CN214517506U

CN214517506U - Machining die for thin-wall casting

Info

Publication number: CN214517506U
Application number: CN202120544768.0U
Authority: CN
Inventors: 谭文庆
Original assignee: Starcome Fujian Hardware Technology Co ltd
Current assignee: Starcome Fujian Hardware Technology Co ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-10-29
Anticipated expiration: 2031-03-16

Abstract

The utility model discloses a processing mould for thin-wall castings, belonging to the mould field, which comprises an upper mould component, a lower punch, a demoulding top plate and a lower base; the middle part of the demoulding top plate is provided with a middle through hole for the lower male die to pass through, and the side wall of the lower male die is in sliding fit connection with the side wall of the middle through hole; the lower end of the lower male die is fixedly connected with the lower base, a plurality of ejector rods are arranged in the lower base, one ends of the ejector rods penetrate through the lower base and abut against the demolding top plate, a workpiece is sleeved on the lower male die during demolding, and the edge of the lower end of the workpiece abuts against the upper end face of the demolding top plate. The workpiece can be uniformly ejected out along the edge of the workpiece under the action of the demoulding top plate, so that the workpiece is prevented from being damaged due to local stress.

Description

Machining die for thin-wall casting

Technical Field

The utility model relates to a mould field especially relates to a mold processing for thin wall foundry goods.

Background

The die casting is a processing method for firstly casting and filling molten metal into a cavity of a die at a low speed or a high speed, and cooling and forming the molten metal in the cavity to obtain a product. In the die casting process, a die casting mold is usually used, and the die casting mold is a tool for completing the die casting process on a die casting and forging machine. The application range of the die casting process is wide, and nowadays some common thin-wall parts, such as a display rear cover with the thickness of 0.5mm to 1.2mm, and the like can also be obtained by die casting.

The thin-wall part is easy to deform and damage during demoulding, the existing mould cannot conveniently eject the thin-wall part, and the workpiece is easy to damage during demoulding.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a mold processing for thin-wall castings is provided can evenly act on the work piece after the shaping for the work piece can not warp the damage after the drawing of patterns.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a processing mould for thin-wall castings, which comprises an upper mould component, a lower punch, a demoulding top plate and a lower base; the middle part of the demoulding top plate is provided with a middle through hole for the lower male die to pass through, and the side wall of the lower male die is in sliding fit connection with the side wall of the middle through hole; the lower end of the lower male die is fixedly connected with the lower base, a plurality of ejector rods are arranged in the lower base, one ends of the ejector rods penetrate through the lower base and abut against the demolding top plate, a workpiece is sleeved on the lower male die during demolding, and the edge of the lower end of the workpiece abuts against the upper end face of the demolding top plate.

The utility model discloses preferred technical scheme lies in, the lower punch middle part is provided with the ejecting through-hole of a plurality of, a plurality of in the ejecting through-hole and four apex angle departments of lower punch all are provided with supplementary knock-out lever, the supplementary knock-out lever other end runs through the lower base.

The utility model discloses preferred technical scheme lies in, drawing of patterns roof both sides are provided with drawing of patterns slip table, drawing of patterns slip table with drawing of patterns roof sliding connection, drawing of patterns slip table is located the both ends of lower terrace die, drawing of patterns slip table can be followed and is close to or keeps away from the direction of lower terrace die slides.

The utility model discloses preferred technical scheme lies in, the top slant of drawing of patterns slip table is provided with the guide arm, go up the mould assembly be provided with guide arm complex slant guide hole, the outside of drawing of patterns slip table is provided with the direction sloping platform, go up the downside of mould assembly be provided with direction sloping platform complex direction inclined plane.

The utility model discloses preferred technical scheme lies in, go up the mould subassembly including last mould shell, last die and injection head, it is fixed in to go up the die go up mould shell downside middle part, go up the die middle part be provided with lower die complex recess, the injection head is located go up one side of die, the discharge end intercommunication of injection head the recess.

The utility model discloses preferred technical scheme lies in, the base is including connecting base and bottom plate from bottom to top in proper order down, the bottom plate with connect base fixed connection.

The utility model has the advantages that:

the utility model provides a processing mould for thin-wall castings, which comprises an upper mould component, a lower punch, a demoulding top plate and a lower base; the middle part of the demoulding top plate is provided with a middle through hole for the lower male die to pass through, and the side wall of the lower male die is in sliding fit connection with the side wall of the middle through hole; the lower end of the lower male die is fixedly connected with the lower base, a plurality of ejector rods are arranged in the lower base, one ends of the ejector rods penetrate through the lower base and abut against the demolding top plate, a workpiece is sleeved on the lower male die during demolding, and the edge of the lower end of the workpiece abuts against the upper end face of the demolding top plate. The workpiece can be uniformly ejected out along the edge of the workpiece under the action of the demoulding top plate, so that the workpiece is prevented from being damaged due to local stress.

Drawings

FIG. 1 is a schematic view of a machining mold for thin-walled castings provided in an embodiment of the present invention;

fig. 2 is a schematic bottom view of a processing mold for thin-walled castings according to an embodiment of the present invention;

in the figure:

1. an upper die assembly; 2. a workpiece; 3. a lower male die; 4. demolding the top plate; 5. a lower base; 11. oblique guide holes; 12. a guide slope; 13. an upper die housing; 14. a female die is arranged; 15. a groove; 16. an injection head; 31. ejecting out the through hole; 41. a demoulding sliding table; 42. a guide bar; 43. a guide ramp; 51. a lower fixing plate; 52. connecting a base; 53. a top rod; 54. the auxiliary ejector rod.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1-2, the processing mold for thin-walled castings provided in the present embodiment includes an upper mold assembly 1, a lower punch 3, a knockout top plate 4, and a lower base 5; the middle part of the demoulding top plate 4 is provided with a middle through hole for the lower convex die 3 to pass through, so that the demoulding top plate 4 is distributed around the lower convex die 3, and acting force can be applied from the periphery. The side wall of the lower male die 3 is in sliding fit connection with the side wall of the middle through hole; the lower end of the lower male die 3 is fixedly connected with the lower base 5, a plurality of ejector rods 53 are arranged in the lower base 5, and one end of each ejector rod 53 penetrates through the lower base 5 to abut against the demolding top plate 4. The lower base 5 is fixed on the equipment, and the mandril 53 is connected on the power device of the equipment. After the die casting is completed, the ejector pin 53 is driven to move upward, thereby pushing up the knockout top plate 4 so that it is separated from the lower base 5. During demoulding, the workpiece 2 is sleeved on the lower convex die 3, and the edge of the lower end of the workpiece 2 is abutted against the upper end face of the demoulding top plate 4. Work piece 2 cup joints on lower terrace die 3 after die-casting, and drawing of patterns roof 4 can slide along lower terrace die 3 to at the in-process that drawing of patterns roof 4 moved up, the edge that pastes lower terrace die 3 is ejecting up work piece 2, makes work piece 2's action point equipartition around, thereby non-deformable damage when drawing of patterns with work piece 2 from lower terrace die 3.

Preferably, the middle part of the lower male die 3 is provided with a plurality of ejection through holes 31, auxiliary ejection rods 54 are arranged in the plurality of ejection through holes 31 and at four top corners of the lower male die 3, and the other ends of the auxiliary ejection rods 54 penetrate through the lower base 5. The auxiliary ejector rod 54 acts on the top of the work piece 2 while the knock-out top plate 4 exerts a force all around, so that the top of the work piece 2 is better separated from the top surface of the lower punch 3.

Preferably, two sides of the demolding top plate 4 are provided with demolding sliding tables 41, the demolding sliding tables 41 are slidably connected with the demolding top plate 4, the demolding sliding tables 41 are located at two ends of the lower male die 3, and the demolding sliding tables 41 can slide along a direction close to or far away from the lower male die 3. During die casting, the two sides of the die are closed by the demolding sliding table 41 from two ends; when demoulding, the demoulding sliding table 41 is slid outwards. Further, the top slant of drawing of patterns slip table 41 is provided with guide arm 42, go up mould assembly 1 be provided with guide arm 42 complex slant guide hole 11, the outside of drawing of patterns slip table 41 is provided with direction sloping platform 43, the downside of going up mould assembly 1 be provided with direction sloping platform 43 complex direction inclined plane 12. When drawing of patterns slip table 41 moved to both sides, because last mould assembly 1 can only reciprocate, under the cooperation of guide arm 42 and direction sloping platform 43, can extrude last mould assembly 1 to the top to make both sides and upper end can accomplish the drawing of patterns action simultaneously, the drawing of patterns is convenient.

Preferably, go up mould subassembly 1 including last mould shell 13, last die 14 and injection head 16, it is fixed in to go up die 14 go up mould shell 13 downside middle part, go up die 14 middle part be provided with lower terrace die 3 complex recess 15, injection head 16 is located go up one side of die 14, the discharge end intercommunication of injection head 16 recess 15. The upper female die 14 is mounted on the upper die housing 13 by screws, so that the upper female die 14 can be conveniently replaced.

Preferably, the lower base 5 sequentially comprises a connecting base 52 and a lower fixing plate 51 from bottom to top, and the lower fixing plate 51 is fixedly connected with the connecting base 52.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. The utility model provides a mold processing for thin wall foundry goods which characterized in that:

comprises an upper die component (1), a lower male die (3), a demoulding top plate (4) and a lower base (5); the middle part of the demoulding top plate (4) is provided with a middle through hole for the lower male die (3) to pass through, and the side wall of the lower male die (3) is in sliding fit connection with the side wall of the middle through hole;

the lower end of the lower male die (3) is fixedly connected with the lower base (5), a plurality of ejector rods (53) are arranged in the lower base (5), one end of each ejector rod (53) penetrates through the lower base (5) to be abutted to the demolding top plate (4), the workpiece (2) is sleeved on the lower male die (3) during demolding, and the edge of the lower end of the workpiece (2) is abutted to the upper end face of the demolding top plate (4).

2. The processing mold for thin-walled castings according to claim 1, characterized in that:

the middle part of the lower male die (3) is provided with a plurality of ejection through holes (31), the ejection through holes (31) and four top corners of the lower male die (3) are provided with auxiliary ejection rods (54), and the other ends of the auxiliary ejection rods (54) penetrate through the lower base (5).

3. The processing mold for thin-walled castings according to claim 1, characterized in that:

drawing of patterns roof (4) both sides are provided with drawing of patterns slip table (41), drawing of patterns slip table (41) with drawing of patterns roof (4) sliding connection, drawing of patterns slip table (41) are located the both ends of lower terrace die (3), drawing of patterns slip table (41) can be followed and are close to or keep away from the direction slip of lower terrace die (3).

4. A working mold for thin-walled castings according to claim 3, characterized in that:

the top slant of drawing of patterns slip table (41) is provided with guide arm (42), go up mould component (1) be provided with guide arm (42) complex slant guide hole (11), the outside of drawing of patterns slip table (41) is provided with direction sloping platform (43), the downside of going up mould component (1) be provided with direction sloping platform (43) complex direction inclined plane (12).

5. The processing mold for thin-walled castings according to claim 1, characterized in that:

go up mould subassembly (1) including last mould shell (13), go up die (14) and injection head (16), it is fixed in to go up die (14) go up die shell (13) downside middle part, go up die (14) middle part be provided with down terrace die (3) complex recess (15), injection head (16) are located go up one side of die (14), the discharge end intercommunication of injection head (16) recess (15).

6. The processing mold for thin-walled castings according to claim 5, characterized in that:

lower base (5) are including connecting base (52) and bottom plate (51) from bottom to top in proper order, bottom plate (51) with connect base (52) fixed connection.