CN201871617U

CN201871617U - Mold for processing automobile muffler upper cover with drawing rib

Info

Publication number: CN201871617U
Application number: CN2010206203929U
Authority: CN
Inventors: 陈伍华; 张如华; 赵向阳; 章跃荣; 何汉顺
Original assignee: FOSHAN CITY SHUNDE LEXING METAL PRODUCT Co Ltd
Current assignee: FOSHAN CITY SHUNDE LEXING METAL PRODUCT Co Ltd
Priority date: 2010-11-23
Filing date: 2010-11-23
Publication date: 2011-06-22
Anticipated expiration: 2020-11-23

Abstract

The utility model discloses a mold for processing automobile muffler upper cover with a drawing rib. The mold comprises a top plate, an upper clamp plate, an upper mold, a lower mold, a lower clamp plate, a bottom plate and a pressing plate, the upper clamp plate is mounted under the top plate, the upper mold is mounted under the upper clamp plate, the lower mold is mounted on the lower clamp plate, the lower clamp plate is mounted on the bottom plate, the pressing plate is mounted on the periphery of the lower mold, a drawing rib groove is arranged at the lower edge of a punch forming surface of the lower mold partially, and the drawing rib at the part of the lower edge of an upper cover workpiece is disposed in the drawing rib groove. The mold avoids breakage and crinkling during one-step molding process for automobile muffler upper covers.

Description

Process the mould of covering on the automotive muffler that has the stretching muscle

Technical field

The utility model belongs to hardware stamping stretch forming device, is specifically related to the mould that a kind of processing has covering on the automotive muffler of stretching muscle.

Background technology

On automotive muffler in the covering moulding process, for saving die cost and production cost, for avoiding mould and workpiece to interfere phenomenon in process of production, two high points of the punch forming surface of the counterdie of existing mold are not at same horizontal line, the line of two high points (line A) and horizontal angle are about 5 degree, as shown in Figure 1, caused like this left and right sides Gao Dian aborning pressure differ, pressure-pad-force more on one side will drawing crack, and a little bit smaller slightly another side will be wrinkling.Because workpiece is big, the curved surface complexity, thickness little (T=1.0mm) is so even add stretched film and stretching liquid in forming process, product still is easy to occur drawing crack, wrinkling.

The utility model content

The utility model is in order to overcome the deficiency that above prior art exists, and the mould of covering on the automotive muffler that a kind of processing has the stretching muscle is provided, and stops the drawing crack, the wrinkling that take place in the covering one-shot forming process on the automotive muffler.

The purpose of this utility model realizes by following technical scheme: this processing has the mould of covering on the automotive muffler of stretching muscle, comprise cope match-plate pattern, train wheel bridge, patrix, counterdie, lower plate, lower bolster and holding pad, train wheel bridge is installed in below the cope match-plate pattern, patrix is installed in below the train wheel bridge, counterdie is installed on the lower plate, lower plate is installed on the lower bolster, holding pad is installed in the counterdie periphery, it is characterized in that: the lower limb part of the punch forming surface of described counterdie is provided with stretching muscle groove, and the stretching muscle of the lower limb part of last covering workpiece is placed in the stretching muscle groove.

Two peaks of the punch forming surface of described counterdie are in same horizontal line, the shape of patrix and counterdie coupling.

The utility model has following advantage with respect to prior art: the mould that this processing has covering on the automotive muffler of stretching muscle carries out architecture advances to existing mould, lower limb part in the punch forming surface of counterdie has increased stretching muscle groove, stretching muscle groove length is approximately 1/3rd of lower limb length, at the local stretching muscle that increases of the lower limb of last covering workpiece, the stretching muscle is placed in the stretching muscle groove, make like this in the forming process, under the flanging effect of patrix, workpiece is stressed everywhere evenly, reasonably regulated the flow condition of material, make workpiece be easy to stretch forming, stop the phenomenon of " splitting at most; wrinkle at least ", also do not increased production cost simultaneously.In addition, the punch forming surface of counterdie is carried out angle adjustment, two peaks of punch forming surface is adjusted into same height, eliminate 5 degree angles, like this in machine-shaping in the process of covering product workpiece stressed more even.

Description of drawings

Fig. 1 is the structural representation of existing mould.

Label among Fig. 1: 1-cope match-plate pattern; The 2-train wheel bridge; The 3-patrix; The 4-holding pad; The 5-lower plate; The 6-lower bolster; The 7-counterdie.

Fig. 2 is the structural representation that processing of the present utility model has the mould of covering on the automotive muffler of stretching muscle.

Label among Fig. 2: 1-cope match-plate pattern; The 2-train wheel bridge; The 3-patrix; The 4-holding pad; The 5-lower plate; The 6-lower bolster; The 7-counterdie; 8-stretching muscle.

Fig. 3 is a structure chart of going up covering.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Processing as shown in Figure 2 has the mould of covering on the automotive muffler of stretching muscle, comprise cope match-plate pattern, train wheel bridge, upper die and lower die, lower plate, lower bolster and holding pad, train wheel bridge is installed in below the cope match-plate pattern, patrix is installed in below the train wheel bridge, counterdie is installed on the lower plate, lower plate is installed on the lower bolster, holding pad is installed in the counterdie periphery, the lower limb part of the punch forming surface of described counterdie is provided with stretching muscle groove, and the stretching muscle of the lower limb part of last covering workpiece is placed in the stretching muscle groove.Two peaks of the punch forming surface of described counterdie are in same horizontal line, the shape of patrix and counterdie coupling.

This mould is shaped to product to the workpiece one-off drawing, product cut away behind the stretching muscle last covering component structure as shown in Figure 3.

The above-mentioned specific embodiment is a preferred embodiment of the present utility model; can not limit the utility model; other any change that does not deviate from the technical solution of the utility model and made or other equivalent substitute mode are included within the protection domain of the present utility model.

Claims

1. process the mould of covering on the automotive muffler that has the stretching muscle, comprise cope match-plate pattern, train wheel bridge, upper die and lower die, lower plate, lower bolster and holding pad, train wheel bridge is installed in below the cope match-plate pattern, patrix is installed in below the train wheel bridge, counterdie is installed on the lower plate, lower plate is installed on the lower bolster, holding pad is installed in the counterdie periphery, it is characterized in that: the lower limb part of the punch forming surface of described counterdie is provided with stretching muscle groove, and the stretching muscle of the lower limb part of last covering workpiece is placed in the stretching muscle groove.

2. processing according to claim 1 has the mould of covering on the automotive muffler of stretching muscle, and it is characterized in that: two peaks of the punch forming surface of described counterdie are in same horizontal line, the shape of patrix and counterdie coupling.