CN210614837U - Cylinder cap fine blanking die - Google Patents

Abstract

The utility model relates to a cylinder cap fine blanking mould, it includes: the upper die assembly comprises an upper die plate, an upper base plate I, an upper base plate II, an upper base plate III and a gear ring plate, wherein the upper die plate, the upper base plate I, the upper base plate II, the upper base plate III and the gear ring plate are arranged from top to bottom; lower die assembly, lower die assembly includes the lower bolster that from the bottom up set up, lower bolster I, lower bolster II and die board, be provided with the die insert in the die board, be provided with ejector retainer in the die insert, lower die assembly still includes big round hole drift, big round hole drift extends in lower bolster II and ejector retainer, the outer end of big round hole drift is provided with the round platform and from the round platform top to the cylinder of far extending, the cylinder diameter is the same with round platform top surface diameter. The large round hole can be formed by one-time fine punching, and a chamfer angle is formed at the edge of the large round hole. And a chamfer is formed without subsequent machining, so that the production efficiency is improved.

Description

Cylinder cap fine blanking die

Technical Field

The utility model belongs to the mould field relates to a fine blanking mould, in particular to cylinder cap fine blanking mould.

Background

The cylinder cover is an automobile part, the product quality requirement is high, the section is large, the flatness requirement after grinding is very strict, therefore, the flatness must be ensured to be 0.1mm after stamping, and the large round hole comprises a chamfer of 2.5mm multiplied by 45 degrees. If the chamfer is finished by subsequent machining, the process is required to be added, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cylinder cap essence towards mould can once the essence towards just forming the chamfer, saves the process, has improved production efficiency.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a cylinder cap fine blanking mould, it includes:

the upper die assembly comprises an upper die plate, an upper base plate I, an upper base plate II, an upper base plate III and a gear ring plate, wherein the upper die plate, the upper base plate I, the upper base plate II, the upper base plate III and the gear ring plate are arranged from top to bottom;

lower die assembly, lower die assembly includes lower bolster, lower bolster I, lower bolster II and the die board that from the bottom up set up, be provided with the die insert in the die board, be provided with a ware in the die insert, lower die assembly still includes big round hole drift, big round hole drift extends lower bolster II with in the ware, the outer end of big round hole drift is provided with the round platform and certainly the round platform top is to the cylinder of far extending, the cylinder diameter with round platform top surface diameter is the same.

Optionally, the upper die assembly further comprises an upper balance bar extending in the upper backing plate iii and the ring gear plate; the lower die assembly comprises a lower balance rod in butt joint with the upper balance rod, and the lower balance rod is installed in the lower die plate and the concave die plate.

Optionally, a guide post is arranged in one of the gear ring plate and the cavity plate, a guide sleeve is arranged in the other one of the gear ring plate and the cavity plate, and the guide post and the guide sleeve are arranged correspondingly.

Optionally, the plane size of the upper cushion plate I is larger than that of the upper cushion plate II.

Optionally, the diameter of the cylinder is the maximum required for the diameter of the central hole of the cylinder cover part.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model discloses a cylinder cap fine blanking mould owing to set up big round hole drift in lower die assembly, the outer end of big round hole drift sets up round platform and cylinder, and wherein, the cylinder is used for punching a hole, and the round platform is used for forming the chamfer when punching a hole. The large round hole can be formed by one-time fine punching, and a chamfer angle is formed at the edge of the large round hole. And a chamfer is formed without subsequent machining, so that the production efficiency is improved.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic view of a cylinder head construction;

fig. 2 is a schematic structural view of a cylinder head fine blanking die according to a preferred embodiment of the present invention;

FIG. 3 is an enlarged schematic view of the outer end of a large round punch;

wherein the reference numerals are as follows:

1. mounting a template;

2. an upper base plate I;

3. an upper base plate II;

4. an upper liner plate III;

5. an upper balancing pole;

6. a ring gear plate;

7. a cavity plate;

8. a lower balance bar;

9. a large round punch;

10. a lower template;

11. a lower base plate I;

12. a piece ejector;

13. a lower base plate II;

14. a concave die insert;

15. a male die and a female die;

16. a lifter bar;

17. a circular truncated cone;

18. a cylinder;

19. a guide post;

20. a guide sleeve;

21. an upper die assembly;

22. a lower die assembly;

a. burred surface;

b. a collapsed corner surface;

HO, central hole;

CH. And (6) chamfering.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

As shown in the cylinder cover of figure 1, the cylinder cover is irregular, and a center hole HO is arranged in the cylinder cover and penetrates through the cylinder cover. The surface a of the cylinder cover is a burr surface, the surface b of the cylinder cover is a collapsed angle surface, and a chamfer CH is arranged on the edge of the center hole HO close to the collapsed angle surface b. In this example, the center hole HO and the chamfer CH are simultaneously formed by fine blanking.

The cylinder head fine blanking die shown in fig. 2 includes an upper die assembly 21 and a lower die assembly 22. The upper die assembly 21 comprises an upper die plate 1, an upper backing plate I2, an upper backing plate II 3, an upper backing plate III 4 and a ring gear plate 6 which are arranged from top to bottom approximately. An upper cushion plate I2 and an upper cushion plate II 3 are arranged in the upper template 1. And the upper cushion plate II 3 is connected with a punch-die 15. The lower surface of the ring gear plate 6 is provided with linearly extending protruding strips (not shown) which are correspondingly pressed on the periphery of the plate adjacent to the cylinder cover outer contour so as to limit the transverse movement of the plate during blanking.

The plane size of upper padding plate I2 is greater than the plane size of upper padding plate II 3, because upper padding plate I2 is more close the power supply, so such setting is favorable to improving the life-span of upper padding plate I2 for mould overall structure is firmer, and is not fragile.

The lower die assembly 22 comprises a lower die plate 10, a lower backing plate I11, a lower backing plate II 13 and a concave die plate 7 which are arranged from bottom to top approximately. The concave die plate 7 is provided with a concave die insert 14, and the concave die insert 14 is provided with a piece ejector 12.

The ejector 12 is provided corresponding to the punch and die 15 in the upper die assembly 21. The ejector 12 and the punch and die 15 are both shaped the same as the cylinder head profile shown in fig. 1. When the punch and die 15 moves down to punch the workpiece to form the outer contour of the cylinder head, the ejector 12 provides a certain reverse force upward to make the punch and die 15 punch better. After the punch-die 15 finishes blanking, the ejector 12 moves upwards to eject the cylinder cover.

The lower die assembly 22 further comprises a large round punch 9, and the large round punch 9 extends into the lower shim plate II 13 and the ejector 12. The large round punch 9 is mainly used for punching holes in the cylinder head to form a central hole HO as shown in fig. 1. Correspondingly, the ejector rod 16 is arranged in the punch-die cavity 15 of the upper die assembly 21. The ejector pin 16 is matched with the large round hole punch 9, and when the large round hole punch 9 punches a workpiece (a cylinder cover) upwards, the ejector pin 16 provides a certain reverse acting force so that the large round hole punch 9 punches better. When the blanking of the large round hole punch 9 is finished, the ejector rod 16 moves downwards to eject the blanking scraps.

As shown in fig. 3, an enlarged schematic view of the outer end of the large round punch 9 is shown, the outer end of the large round punch 9 is provided with a circular truncated cone 17, the top surface of the circular truncated cone 17 extends to a far position to form a cylinder 18, and the diameter of the cylinder 18 is the same as that of the top surface of the circular truncated cone 17. The angle of the side edge of the circular truncated cone 17 is 45 degrees, the height is 2.5mm, and the circular truncated cone is matched with the size of a chamfer on a cylinder cover. The cylinder 18 is mainly used for punching a center hole HO, and the circular table 17 is used for forming a chamfer CH (see fig. 1) on a collapse surface of the center hole HO. The diameter of the cylinder 18 is the maximum required diameter of the central hole HO of the cylinder cover part.

An upper balance bar 5 is also provided in the upper die assembly 21, the upper balance bar 5 extending in the upper shim plate iii 4 and the ring gear plate 6. The lower die assembly 22 is also provided with a lower balance bar 8, and the lower balance bar 8 is arranged in the lower die plate 10 and the concave die plate 7. The lower balance bar 8 is butted with the upper balance bar 5. When the lower balance bar 8 is butted against the upper balance bar 5, the upper die assembly 21 and the lower die assembly 22 can be made more stable, particularly when the extruded workpiece is in an eccentric position. Thus improving the anti-unbalance loading capability of the die.

The cavity plate 7 of the lower die assembly 22 is also provided with a guide post 19, and the gear ring plate 6 of the upper die assembly 21 is provided with a guide sleeve 20. The guide post 19 is arranged corresponding to the guide sleeve 20, and specifically, the guide post 19 can be inserted into the guide sleeve 20 and can slide under the guiding action of the guide sleeve 20. In other embodiments, the guide studs 19 may also be provided in the ring gear plate 6, with the corresponding guide sleeves 20 being provided in the cavity plate 7.

The utility model discloses a cylinder cap that takes shape is dashed to the essence, and the plane degree reaches 0.1mm, has realized big round hole collapse angle face 2.5mm x 45 chamfers simultaneously at the in-process that the essence is dashed to take shape, therefore has guaranteed follow-up grinding qualification rate to and need not the machining chamfer, improved production efficiency, stable in quality, it is with low costs.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (5)

1. The utility model provides a cylinder cap fine blanking mould which characterized in that, it includes:

the die comprises an upper die assembly (21), wherein the upper die assembly (21) comprises an upper die plate (1), an upper base plate I (2), an upper base plate II (3), an upper base plate III (4) and a ring gear plate (6), the upper base plate I (2) and the upper base plate II (3) are arranged in the upper die plate (1), a punch-die (15) is connected to the upper base plate II (3), and an ejector rod (16) is arranged in the punch-die (15);

lower die assembly (22), lower die assembly (22) include lower bolster (10), lower bolster I (11), lower bolster II (13) and die board (7) that from the bottom up set up, be provided with die insert (14) in die board (7), be provided with ejector (12) in die insert (14), lower die assembly (22) still include big round hole drift (9), big round hole drift (9) extend lower bolster II (13) with in ejector (12), the outer end of big round hole drift (9) is provided with round platform (17) and certainly the round platform top is to the cylinder (18) of far extending, cylinder (18) diameter with round platform (17) top surface diameter is the same.

2. The cylinder head fine blanking die of claim 1, characterized in that: the upper die assembly (21) further comprises an upper balance bar (5), and the upper balance bar (5) extends in the upper backing plate III (4) and the ring gear plate (6); the lower die assembly (22) comprises a lower balance rod (8) in butt joint with the upper balance rod (5), and the lower balance rod (8) is installed in the lower die plate (10) and the concave die plate (7).

3. The cylinder head fine blanking die of claim 1, characterized in that: one of the gear ring plate (6) and the concave template (7) is internally provided with a guide post (19), the other is internally provided with a guide sleeve (20), and the guide post (19) and the guide sleeve (20) are arranged correspondingly.

4. The cylinder head fine blanking die of claim 1, characterized in that: the plane size of the upper backing plate I (2) is larger than that of the upper backing plate II (3).

5. The cylinder head fine blanking die of claim 1, characterized in that: the diameter of the cylinder (18) is the maximum required diameter of the central hole of the cylinder cover part.

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