CN217044278U - Processing die for washing machine wheel cover - Google Patents

Abstract

The utility model provides a processing mould of a washing machine wheel cover, which belongs to the technical field of moulds and comprises a first mould, a second mould, a third mould and a fourth mould; the utility model discloses a four steps of four group's moulds branch become washing machine wheel lid with cylindric blank processing, at first carry out the preliminary punching press through first mould and become cylindric blank bottom for cylindric and top for the work piece of ellipsoid form one, rethread second mould carries out the secondary punching press to work piece one and becomes the bottom for cylindric and top for the work piece two of disc, then carry out the preliminary punching press through third mould to work piece two and become the bottom for cylindric, the top has the work piece three of the through-hole that does not link up for disc and cylinder center, punch a hole through fourth mould to work piece three at last, run through the through-hole in the work piece three and form work piece four, can improve machining efficiency, can guarantee the machining precision again.

Description

Processing die for washing machine wheel cover

Technical Field

The utility model relates to the technical field of mold, in particular to mold processing of washing machine wheel cap.

Background

With the increasing living standard of people, the washing machine enters thousands of households, and a wheel cover in the washing machine is one of important parts. Fig. 5 shows a commonly used wheel cover for a washing machine, which is usually manufactured from a cylindrical metal blank, and in the prior art, there are machining methods, such as turning by a numerical control machine tool, which have small dimensional deviation and high precision of machined parts, but have low machining efficiency and are not suitable for batch machining, and for example, a drawing die is used to draw a blank piece as shown in fig. 6 and then a drilling machine is used to drill holes, and the machining method relocates the drilled holes with a certain depth, so that the machining efficiency is not high and the precision of the parts is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the shortcoming and not enough that prior art exists, and provide a mold processing of washing machine wheel cap that machining efficiency is high and can guarantee the work piece precision.

The utility model adopts the following technical scheme: a processing die for a washing machine wheel cover comprises a first die, a second die, a third die and a fourth die;

the first die comprises a first upper die and a first lower die, the first upper die comprises a first upper die holder and a first upper die plate, a first stamping rod is arranged at the center of the first upper die holder and the center of the first upper die plate, a first molding surface is arranged on the lower end surface of the first stamping rod and the lower end surface of the first upper die plate, the first molding surface is an ellipsoidal depression, the first lower die comprises a first lower die holder and a first lower die plate, a first ejector rod is arranged at the center of the first lower die holder and the center of the first lower die plate and is coaxially arranged with the first stamping rod, a cylindrical first die cavity is arranged at the center of the first lower die plate, a second molding surface is arranged on the upper end surface of the first lower die plate, and the second molding surface is an ellipsoidal depression which is the same as the first molding surface;

the second die comprises a second upper die and a second lower die, the second upper die comprises a second upper die holder and a second upper die plate, a second stamping rod is arranged at the centers of the second upper die holder and the second upper die plate, a dome-shaped stamping part is arranged on the lower end face of the second stamping rod, a cylindrical recess is arranged on the lower end face of the second upper die plate, the second lower die comprises a second lower die holder and a second lower die plate, a second ejector rod is arranged at the centers of the second lower die holder and the second lower die plate and is coaxial with the second stamping rod, a cylindrical second die cavity is arranged at the center of the second lower die plate, and a cylindrical protrusion matched with the cylindrical recess is arranged on the upper end face of the second lower die plate;

the third die comprises a third upper die and a third lower die, the third upper die comprises a third upper die holder and a third upper die plate, a third stamping rod is arranged at the center of the third upper die holder and the third upper die plate, a cylindrical stamping part is arranged on the lower end face of the third stamping rod, a cylindrical lug is arranged on the lower end face of the third upper die plate, the third lower die comprises a third lower die holder and a third lower die plate, a third ejector rod is arranged at the center of the third lower die holder and the third lower die plate and is coaxial with the third stamping rod, a cylindrical third die cavity is arranged at the center of the third lower die plate, and a cylindrical groove matched with the cylindrical lug is arranged on the upper end face of the third lower die plate;

the fourth die comprises a fourth upper die and a fourth lower die, the fourth upper die comprises a fourth upper die base and a fourth upper die plate, a fourth stamping rod is arranged at the center of the fourth upper die base and the center of the fourth upper die plate, a cylindrical stamping hole part is arranged on the lower end face of the fourth stamping rod, a cylindrical upper die cavity is arranged on the lower end face of the fourth upper die plate, the fourth lower die comprises a fourth lower die base and a fourth lower die plate, a cylindrical fourth die cavity is arranged at the center of the fourth lower die plate, a cushion block is arranged between the fourth lower die base and the fourth lower die plate, and a through hole for the cylindrical stamping part to stretch into is formed in the center of the cushion block.

The diameters of the first mold cavity, the second mold cavity, the third mold cavity and the fourth mold cavity are the same.

The upper end of the first ejector rod is provided with a first flange portion, and the diameter of the first flange portion is smaller than that of the first die cavity.

And a second flange part is arranged at the upper end of the second ejector rod, and the diameter of the second flange part is equal to that of the first flange part.

And a third flange part is arranged at the upper end of the third ejector rod, and the diameter of the third flange part is smaller than that of the first flange part.

The diameter of the cylindrical stamping part is smaller than that of the third die cavity.

The diameter of the cylindrical punching part is smaller than that of the fourth die cavity.

The diameter of the through hole on the cushion block is smaller than that of the fourth die cavity.

The first upper die, the second upper die, the third upper die and the fourth upper die are all provided with a plurality of first connecting holes, and the first lower die, the second lower die, the third lower die and the fourth lower die are all provided with a plurality of second connecting holes.

Cavities are formed in the first upper template, the second upper template, the third upper template and the fourth upper template.

The beneficial effects of the utility model are as follows: the utility model discloses a four steps of four group's moulds branch become washing machine wheel lid with cylindric blank processing, at first carry out the preliminary punching press through first mould with cylindric blank into the bottom for cylindric and the top is the work piece one of ellipsoid form, rethread second mould carries out the secondary punching press to the work piece one and becomes the bottom for cylindric and the work piece two of top for the disc, then carry out the preliminary punching a hole to the work piece two through the third mould and become the bottom for cylindric, the top has the work piece three of the through-hole that does not link up for disc and cylinder center, punch a hole to work piece three through the fourth mould at last, run through the through-hole in the work piece three and form work piece four, can improve machining efficiency, can guarantee the machining precision again.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings obtained from these drawings still belong to the scope of the present invention without inventive laboriousness.

Fig. 1 is a schematic view of a first mold of the present invention;

fig. 2 is a schematic view of a second mold of the present invention;

fig. 3 is a schematic view of a third mold of the present invention;

fig. 4 is a schematic view of a fourth mold of the present invention;

FIG. 5 is a schematic view of the wheel cover of the washing machine of the present invention;

FIG. 6 is a schematic view of a blank state according to the present invention;

in the figure, 1-a first die, 101-a first upper die holder, 102-a first upper die plate, 103-a first stamping bar, 104-a first forming surface, 105-a first lower die holder, 106-a first lower die plate, 107-a first ram, 108-a first die cavity, 109-a second forming surface, 110-a first flange portion, 2-a second die, 201-a second upper die holder, 202-a second upper die plate, 203-a second stamping bar, 204-a dome-shaped stamping portion, 205-a cylindrical depression, 206-a second lower die holder, 207-a second lower die plate, 208-a second ram, 209-a second die cavity, 210-a cylindrical protrusion, 211-a second flange portion, 3-a third die, 301-a third upper die holder, 302-a third upper die plate, 303-a third punching rod, 304-a cylindrical punching part, 305-a cylindrical bump, 306-a third lower die holder, 307-a third lower die plate, 308-a third ejector rod, 309-a third die cavity, 310-a cylindrical groove, 311-a third flange part, 4-a fourth die, 401-a fourth upper die holder, 402-a fourth upper die plate, 403-a fourth punching rod, 404-a cylindrical punching part, 405-an upper die cavity, 406-a fourth lower die holder, 407-a fourth lower die plate, 408-a fourth die cavity, 409-a cushion block, 410-a through hole, 5-a first connecting hole, 6-a cavity, 7-a second connecting hole, 8-a first workpiece, 9-a second workpiece, 10-a third workpiece, and 11-a fourth workpiece.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are only used for convenience of expression and should not be understood as limitations to the embodiments of the present invention, and the following embodiments do not describe any more.

The terms of direction and position in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer to the direction and position of the attached drawings. Accordingly, the use of directional and positional terms is intended to illustrate and understand the present invention and is not intended to limit the scope of the invention.

As shown in fig. 1 to fig. 6, for the present invention provides an embodiment:

this example processed a cylindrical blank into a washing machine wheel cover as shown in fig. 5 using four sets of dies.

A processing mould of a washing machine wheel cover comprises a first mould 1, a second mould 2, a third mould 3 and a fourth mould 4; the first die 1 comprises a first upper die and a first lower die, the first upper die comprises a first upper die holder 101 and a first upper die plate 102, a first stamping rod 103 is arranged at the center of the first upper die holder 101 and the center of the first upper die plate 102, a first molding surface 104 is arranged on the lower end surfaces of the first stamping rod 103 and the first upper die plate 102, the first molding surface 104 is an ellipsoidal depression, the first lower die comprises a first lower die holder 105 and a first lower die plate 106, a first ejector rod 107 is arranged at the center of the first lower die holder 105 and the first lower die plate 106 and is coaxial with the first stamping rod 103, a cylindrical first die cavity 108 is arranged at the center of the first lower die plate 106, a second molding surface 109 is arranged on the upper end surface of the first lower die plate 106, and the second molding surface 109 is an ellipsoidal depression same as the first molding surface 104; the second die 2 comprises a second upper die and a second lower die, the second upper die comprises a second upper die holder 201 and a second upper die plate 202, a second stamping rod 203 is arranged at the centers of the second upper die holder 201 and the second upper die plate 202, a dome-shaped stamping part 204 is arranged on the lower end surface of the second stamping rod 203, a cylindrical recess 205 is arranged on the lower end surface of the second upper die plate 202, the second lower die comprises a second lower die holder 206 and a second lower die plate 207, a second ejector rod 208 is arranged at the centers of the second lower die holder 206 and the second lower die plate 207 and is coaxial with the second stamping rod 203, a cylindrical second die cavity 209 is arranged at the center of the second lower die plate 207, and a cylindrical protrusion 210 matched with the cylindrical recess 205 is arranged on the upper end surface of the second lower die plate 207; the third mold 3 includes a third upper mold and a third lower mold, the third upper mold includes a third upper mold seat 301 and a third upper mold plate 302, the centers of the third upper mold seat 301 and the third upper mold plate 302 are provided with a third stamping rod 303, the lower end surface of the third stamping rod 303 is provided with a cylindrical stamping part 304, the lower end surface of the third upper mold plate 302 is provided with a cylindrical bump 305, the third lower mold includes a third lower mold seat 306 and a third lower mold plate 307, the centers of the third lower mold seat 306 and the third lower mold plate 307 are provided with a third ejector rod 308 and are coaxially arranged with the third stamping rod 303, the center of the third lower mold plate 307 is provided with a cylindrical third mold cavity 309, and the upper end surface of the third mold plate 307 is provided with a cylindrical groove 310 adapted to the cylindrical bump 305; the fourth die 4 includes a fourth upper die and a fourth lower die, the fourth upper die includes a fourth upper die holder 401 and a fourth upper die plate 402, the centers of the fourth upper die holder 401 and the fourth upper die plate 402 are provided with a fourth punching rod 403, the lower end surface of the fourth punching rod 403 is provided with a cylindrical punching portion 404, the lower end surface of the fourth upper die plate 402 is provided with a cylindrical upper die cavity 405, the fourth lower die includes a fourth lower die holder 406 and a fourth lower die plate 407, the center of the fourth lower die plate 407 is provided with a cylindrical fourth die cavity 408, a spacer 409 is arranged between the fourth lower die holder 406 and the fourth lower die plate 407, and the center of the spacer 409 is provided with a through hole 410 for the cylindrical punching portion 404 to extend into.

By adopting the four groups of dies, firstly, a cylindrical blank is pre-punched into a first workpiece 8 with a cylindrical bottom and an ellipsoidal top through a first die 1, and then the first workpiece 8 is secondarily punched into a second workpiece 9 with a cylindrical bottom and a disc top through a second die 2;

and then, pre-punching the second workpiece 9 into a third workpiece 10 with a cylindrical bottom and a disc top and a non-through hole in the center of the cylinder by using a third die 3, and finally punching the third workpiece 10 by using a fourth die 4 to form a fourth workpiece 11 by penetrating the through hole in the third workpiece 10.

In conclusion, the washing machine wheel cover is processed by using the set of die, so that the processing efficiency can be improved, the processing precision can be ensured, and the yield can be improved.

In this embodiment, the first, second, third and fourth cavities 108, 209, 309 have the same diameter as the fourth cavity 408, which is the same diameter as the cylindrical end of the washing machine cover.

The upper end of the first push rod 107 is provided with a first flange part 110, the diameter of the first flange part 110 is smaller than the diameter of the first die cavity 108, as shown in fig. 1, the first flange part 110 abuts against the lower end face of the first workpiece 8, and the first workpiece 8 is pushed out by the first push rod 107 after stamping.

The second top rod 208 is provided with a second flange portion 211 at the upper end, the diameter of the second flange portion 211 is equal to the diameter of the first flange portion 110, as shown in fig. 2, the second flange portion 211 abuts against the lower end surface of the second workpiece 9, and the second workpiece 9 is ejected by the second top rod 208 after being pressed.

The third top rod 308 is provided with a third flange 311 at the upper end, the diameter of the third flange 311 is smaller than that of the first flange 110, as shown in fig. 3, the third flange 311 abuts against the lower end face of the third workpiece 10, and a through hole which does not penetrate through is formed in the third workpiece 10 in the pre-punching process.

The diameter of the cylindrical punch 304 is smaller than the diameter of the third die cavity 309; the diameter of the cylindrical punching part 404 is smaller than that of the fourth cavity 408, and is used for processing a through hole in the middle of the washing machine wheel cover.

The diameter of the through hole 410 of the pad 409 is smaller than that of the fourth mold cavity 408, as shown in fig. 4, the upper end surface of the pad 409 abuts against the lower end surface of the washing machine wheel cover.

All be equipped with a plurality of first connecting holes 5 on first last mould, the last mould of second, the third mould and the fourth mould, all be equipped with a plurality of second connecting holes 7 on first lower mould, the lower mould of second, the lower mould of third and the fourth lower mould, be connected like bolt, nut and gasket through the fastener.

The first upper template 102, the second upper template 202, the third upper template 302 and the fourth upper template 402 are all provided with cavities 6, and under the condition that the strength of the mold is not affected, the cavity structures are properly arranged, so that the material can be saved, and the cost can be reduced.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention, therefore, all equivalent variations of the present invention are intended to be covered by the present invention.

Claims (10)

1. A processing die for a washing machine wheel cover is characterized by comprising a first die (1), a second die (2), a third die (3) and a fourth die (4);

the first die (1) comprises a first upper die and a first lower die, the first upper die comprises a first upper die holder (101) and a first upper die plate (102), a first stamping rod (103) is arranged at the center of the first upper die holder (101) and the first upper template (102), a first molding surface (104) is arranged on the lower end surface of the first stamping rod (103) and the first upper template (102), the first molding surface (104) is an ellipsoidal recess, the first lower die comprises a first lower die holder (105) and a first lower die plate (106), a first mandril (107) is arranged at the center of the first lower die holder (105) and the first lower template (106) and is coaxial with the first stamping rod (103), a cylindrical first die cavity (108) is arranged in the center of the first lower die plate (106), the upper end surface of the first lower template (106) is provided with a second molding surface (109), and the second molding surface (109) is an ellipsoidal recess the same as that of the first molding surface (104);

the second die (2) comprises a second upper die and a second lower die, the second upper die comprises a second upper die holder (201) and a second upper die plate (202), a second stamping rod (203) is arranged at the center of the second upper die holder (201) and the second upper template (202), the lower end face of the second stamping rod (203) is provided with a dome-shaped stamping part (204), the lower end face of the second upper template (202) is provided with a cylindrical recess (205), the second lower die comprises a second lower die seat (206) and a second lower template (207), a second ejector rod (208) is arranged at the center of the second lower die base (206) and the second lower template (207) and is coaxial with the second stamping rod (203), a cylindrical second die cavity (209) is arranged at the center of the second lower template (207), the upper end face of the second lower template (207) is provided with a cylindrical bulge (210) matched with the cylindrical recess (205);

the third die (3) comprises a third upper die and a third lower die, the third upper die comprises a third upper die holder (301) and a third upper die plate (302), a third stamping rod (303) is arranged at the center of the third upper die holder (301) and the third upper template (302), the lower end face of the third stamping rod (303) is provided with a cylindrical stamping part (304), the lower end face of the third upper template (302) is provided with a cylindrical lug (305), the third lower die comprises a third lower die base (306) and a third lower template (307), a third ejector rod (308) is arranged at the center of the third lower die base (306) and the third lower die plate (307) and is coaxial with the third punching rod (303), a cylindrical third die cavity (309) is arranged at the center of the third lower template (307), the upper end face of the third lower template (307) is provided with a cylindrical groove (310) matched with the cylindrical bump (305);

the fourth die (4) comprises a fourth upper die and a fourth lower die, the fourth upper die comprises a fourth upper die base (401) and a fourth upper die plate (402), a fourth stamping rod (403) is arranged at the centers of the fourth upper die base (401) and the fourth upper die plate (402), a cylindrical stamping hole portion (404) is formed in the lower end face of the fourth stamping rod (403), a cylindrical upper die cavity (405) is formed in the lower end face of the fourth upper die plate (402), the fourth lower die comprises a fourth lower die base (406) and a fourth lower die plate (407), a cylindrical fourth die cavity (408) is formed in the center of the fourth lower die plate (407), a cushion block (409) is arranged between the fourth lower die base (406) and the fourth lower die plate (407), and a through hole (410) for the cylindrical stamping hole portion (404) to extend into is formed in the center of the cushion block (409).

2. The processing mold for washing machine wheel covers, according to claim 1, characterized in that the first mold cavity (108), the second mold cavity (209), the third mold cavity (309) and the fourth mold cavity (408) have the same diameter.

3. The processing mold for the washing machine wheel cover according to claim 1, characterized in that the upper end of the first top rod (107) is provided with a first flange part (110), and the diameter of the first flange part (110) is smaller than that of the first mold cavity (108).

4. The processing mold for the washing machine wheel cover according to claim 3, characterized in that the second top bar (208) is provided with a second flange part (211) at the upper end, and the diameter of the second flange part (211) is equal to the diameter of the first flange part (110).

5. The processing mold for washing machine wheel cover according to claim 4, characterized in that the third top bar (308) is provided with a third flange part (311) at the upper end, the diameter of the third flange part (311) is smaller than that of the first flange part (110).

6. The processing die for the washing machine wheel cover as claimed in claim 1, wherein the diameter of the cylindrical punching part (304) is smaller than the diameter of the third die cavity (309).

7. The processing die for the washing machine wheel cover as claimed in claim 1, characterized in that the diameter of the cylindrical punching part (404) is smaller than that of the fourth die cavity (408).

8. The processing die for the washing machine wheel cover as claimed in claim 1, wherein the diameter of the through hole (410) on the cushion block (409) is smaller than that of the fourth die cavity (408).

9. The processing mold for the washing machine wheel cover according to claim 1, characterized in that the first upper mold, the second upper mold, the third upper mold and the fourth upper mold are provided with a plurality of first connecting holes (5), and the first lower mold, the second lower mold, the third lower mold and the fourth lower mold are provided with a plurality of second connecting holes (7).

10. The processing mold for the washing machine wheel cover according to claim 1, characterized in that the first upper mold plate (102), the second upper mold plate (202), the third upper mold plate (302) and the fourth upper mold plate (402) are all provided with a cavity (6) therein.

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