CN210614834U

CN210614834U - Valve plate mould with single-side chamfer of central hole

Info

Publication number: CN210614834U
Application number: CN201921563095.2U
Authority: CN
Inventors: 周劲松; 洪福卿
Original assignee: Suzhou Yunheng Fine Blanking Technology Co Ltd
Current assignee: Suzhou Yunheng Fine Blanking Technology Co Ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-05-26
Anticipated expiration: 2029-09-19

Abstract

The utility model relates to a valve plate mould of centre bore single face chamfer, it includes: the lower die assembly is provided with a chamfering male die and a punching male die, the chamfering male die and the punching male die are distributed in the front and back of the feeding direction of a workpiece, and the chamfering male die comprises a circular table arranged at the outer end of the chamfering male die and a cylinder arranged at the outer end of the circular table; the upper die assembly is provided with avoidance holes corresponding to the chamfering male dies, and is further provided with a material returning rod, and the material returning rod and the punching male dies are correspondingly arranged. Not only the precision of the center hole is ensured, but also the chamfering size precision is high.

Description

Valve plate mould with single-side chamfer of central hole

Technical Field

The utility model belongs to the mould field relates to a fine blanking mould, in particular to valve plate mould of centre bore single face chamfer.

Background

The valve plate is an important part of an automobile air-conditioning compressor, a central hole needs to be chamfered, and the size of the chamfer has certain requirements. The traditional method is that the efficiency of machining and chamfering after fine blanking is low. If a continuous fine blanking forming method of punching first and chamfering second is adopted, because the chamfering has certain depth requirement, the extruded material flows into the central hole, the central hole deforms, and the hole diameter also has certain change.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a valve plate mould of centre bore single face chamfer can form good chamfer.

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

the utility model provides a valve plate mould of centre bore single face chamfer, it includes:

the lower die assembly is provided with a chamfering male die and a punching male die, the chamfering male die and the punching male die are distributed in the front and back of the feeding direction of a workpiece, and the chamfering male die comprises a circular table arranged at the outer end of the chamfering male die and a cylinder arranged at the outer end of the circular table;

the upper die assembly is provided with avoidance holes corresponding to the chamfering male dies, and is further provided with a material returning rod, and the material returning rod and the punching male dies are correspondingly arranged.

Optionally, the depth of the circular truncated cone is greater than the chamfering depth of the center hole of the finished valve plate.

Optionally, the depth of the cylinder is 1.2 mm-1.5 mm.

Optionally, a punch guide sleeve is arranged in the lower die assembly, and the punching punch is mounted in the punch guide sleeve.

Optionally, a punch-die insert is arranged in the upper die assembly, and the material returning rod is mounted in the punch-die insert.

Optionally, the avoiding hole is a blind hole or a through hole.

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 valve plate mould of centre bore single face chamfer owing to set gradually chamfer terrace die and the terrace die that punches a hole in the material loading direction in the lower mould subassembly to chamfer earlier to the centre bore of valve plate, later punch a hole. The avoiding hole in the upper die assembly is beneficial to forming a bulge on the burr surface of the valve plate during chamfering; and a material returning rod in the upper die assembly is matched with the punching male die to finish fine punching. Because the outer end of the chamfering male die is provided with the round platform and the cylinder arranged at the outer end of the round platform, the round platform extrudes the valve plate to form a chamfer, the cylinder extrudes the valve plate to form a pre-punched hole, and when the subsequent punching male die punches a hole, the deformation of a chamfer area is not influenced, so that the precision of a center hole is ensured, and the size precision of the chamfer is high.

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 structural view of a valve plate mold with a single-sided chamfer of a center hole according to a preferred embodiment of the invention;

FIG. 2 is an enlarged schematic view of the outer end of the chamfering punch of FIG. 1;

wherein the reference numerals are as follows:

1. a lower die assembly;

2. a male die guide sleeve;

3. punching a male die;

4. chamfering the male die;

5. an upper die assembly;

6. a material returning rod;

7. a convex-concave die insert;

8. a circular truncated cone;

9. a cylinder;

10. avoiding the hole.

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 fig. 1, the valve plate mold with a single-sided chamfer of a center hole comprises a lower mold assembly 1 and an upper mold assembly 5. Is suitable for chamfering the central hole of the corner collapse surface of the valve plate part.

Wherein, the lower die component 1 and the upper die component 5 have two steps of a and b when matched. The workpiece is transported in the c direction. a. And b, distributing the two steps back and forth in the direction c.

Wherein, a step is provided with a chamfering convex die 4 in the lower die component 1, and an avoiding hole 10 is arranged in the upper die component 5, and the avoiding hole 10 is arranged corresponding to the chamfering convex die 4.

As shown in fig. 2, a circular truncated cone 8 is arranged at the outer end of the chamfering convex die 4, and a cylinder 9 is arranged at the outer end of the circular truncated cone 8.

The chamfering male die 4 extrudes the plate, the round platform 8 ensures the chamfering size, and the cylinder 9 plays a role of local punching (pre-punching). The material produced by extrusion forms a protrusion on the corresponding surface of the sheet material, and the avoiding hole 10 in the upper die assembly 5 plays a role of avoiding the protrusion.

In this embodiment, the depth of the circular truncated cone 8 is slightly greater than the chamfering depth of the center hole of the finished valve plate, so as to avoid tolerance and prevent steps from being formed in the center hole of the valve plate after subsequent punching. The depth of the cylinder 9 is 1.2-1.5 mm, so that a pre-punched hole with proper depth is formed.

The avoiding hole 10 may be a blind hole or a through hole.

Subsequently, the workpiece (plate) is moved to the step b. And b, arranging a punching male die 3 in the lower die assembly 1, arranging a material returning rod 6 in the upper die assembly 5, and arranging the material returning rod 6 corresponding to the punching male die 3. When the punching male die 3 extrudes the workpiece upwards, the material returning rod 6 provides certain reverse acting force so that the punching male die 3 can well punch the workpiece. After the punching male die 3 completes blanking, the material returning rod 6 moves downwards to push out blanking waste.

The working end diameter of the piercing punch 3 is slightly larger than the diameter of the cylinder 9 (see fig. 2).

As shown in fig. 1, in this embodiment, a punch guide sleeve 2 is further disposed in the lower die assembly 1, and the punching punch 3 is mounted in the punch guide sleeve 2, so that the replacement of the punching punch 3 is facilitated, and the die repair is convenient.

As shown in fig. 1, in this embodiment, a punch-die insert 7 is disposed in the upper die assembly 5, and the material returning rod 6 is mounted in the punch-die insert 7, so that the replacement of the material returning rod 6 is facilitated, and the die repair is also facilitated.

In summary, at the step a, the chamfering convex die 4 forms a pre-punched hole on the workpiece while chamfering the workpiece, so that at the step b, the punching convex die 3 punches the workpiece without affecting the deformation of the chamfering area, the precision of the central hole of the valve plate is ensured, and the chamfering size precision is high.

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

1. A valve plate mould of centre bore single face chamfer, its characterized in that, it includes:

the lower die assembly (1) is provided with a chamfering male die (4) and a punching male die (3), the chamfering male die (4) and the punching male die (3) are distributed in the front and back of the feeding direction of a workpiece, and the chamfering male die (4) comprises a circular truncated cone (8) arranged at the outer end of the chamfering male die and a cylinder (9) arranged at the outer end of the circular truncated cone (8);

go up mould subassembly (5), go up be provided with on mould subassembly (5) with the corresponding hole of dodging (10) of chamfering terrace die (4), go up still to be provided with material returned pole (6) on mould subassembly (5), material returned pole (6) with punch a hole terrace die (3) corresponding setting.

2. The valve plate mold with a single-sided chamfer of the central bore of claim 1, wherein: the depth of the round platform (8) is greater than the chamfering depth of the center hole of the finished valve plate.

3. The valve plate mold with a single-sided chamfer of the central bore of claim 1, wherein: the depth of the cylinder (9) is 1.2 mm-1.5 mm.

4. The valve plate mold with a single-sided chamfer of the central bore of claim 1, wherein: a punch guide sleeve (2) is arranged in the lower die component (1), and the punching punch (3) is installed in the punch guide sleeve (2).

5. The valve plate mold with a single-sided chamfer of the central bore of claim 1, wherein: the avoiding hole (10) is a blind hole or a through hole.