CN207887736U - A kind of drawing forming mold of end cap processing - Google Patents

Abstract

The utility model discloses a kind of drawing forming molds of end cap processing, including one-off drawing mold and succeeding stretch mold, the succeeding stretch mold, and subsequent forming processing is carried out based on the workpiece that one-off drawing mold is processed；The drawing and forming to end cap is completed in such a way that substep twice is processed.The utility model provides a kind of drawing forming mold of end cap processing, is effectively prevented its deformation and cracking, improves the yield rate of end cap.

Description

A kind of drawing forming mold of end cap processing

Technical field

The utility model belongs to drawing die technical field, more particularly to a kind of drawing forming mold of end cap processing.

Background technology

In the exhaust system of automobile engine, the part for using various shapes complexity, especially housing component are needed, is used for Gas passage is formed, a kind of end cap is directed to, end cap is cylinder lid-like, and one end is the bowl-mouth shape of flared type, tool Have and offer bottom outlet on the other end of bottom wall, there is turned-out annular boss on bottom outlet, and also has on bottom wall recessed to inner cavity Keystone ring groove-like structure offers a side opening in the cylindrical sidewall of end cap, and the side opening is protruded to the outside of side wall, in the rim of a bowl The edge of shape is parallel to the annular scrap (bridge) of bottom wall plane, and as shown in Fig. 1, shape and structure is complicated, and due to being thin-wall part, It is very not easy to be processed, especially when stretching, it be easy to cause deformation and cracking phenomena.

Invention content

Goal of the invention：In order to overcome the deficiencies in the prior art, the utility model to provide a kind of drawing of end cap processing Molding die is stretched, its deformation and cracking is effectively prevented, improves the yield rate of end cap.

Technical solution：To achieve the above object, the technical solution of the utility model is as follows：

A kind of drawing forming mold of end cap processing, including one-off drawing mold and succeeding stretch mold, the secondary drawing It stretches mold and carries out subsequent forming processing based on the workpiece that one-off drawing mold is processed；

The one-off drawing mold includes the first lower template and carries out the first of open mold relative to first lower template Cope plate, the bottom of first cope plate are provided with the first cylindrical punch-pin, and the outer sheath of first punch-pin is equipped with the One holding pad, first holding pad is with respect to telescopic slide above and below the first cope plate, the end cross-sectional shape of first punch-pin For inverted U-shaped structure, and the tapered protrusion towards U-shaped structure open side is provided on the bottom surface of U-shaped structure；First lower template On be provided with the first cylindrical cavity plate, the type face of first cavity plate matches with the type face of the first punch-pin, and described first Cavity plate is " convex " type structure, and the outer ring of first cavity plate is arranged with the first top plate, and the first top plate is upper and lower relative to the first cavity plate Telescopic slide, edge of first top plate higher than the type face of the first cavity plate；The protrusion of the first punch-pin U-shaped structure is Insert on cricoid first, insert is fixed at the outer ring of the first punch-pin on described first, is arranged in the outer ring of the first cavity plate There are first time insert, first time insert to be correspondingly arranged with insert on first.

Further, the succeeding stretch mold includes the second lower template and is opened and closed relative to second lower template Second cope plate of mould, the bottom of second cope plate are provided with the second cavity plate of annular, are worn on the inside of second cavity plate Equipped with the second holding pad, second holding pad is with respect to telescopic slide above and below the second cope plate, the bottom surface of second holding pad It is provided with the binder type face to match with the ahermatypic face of end cap middle section, second cavity plate is the bowl-mouth shape knot of back-off Structure；Cylindrical second punch-pin is provided in second lower template, the outer sheath of second punch-pin is equipped with the second supporting plate, described Second supporting plate is with respect to the second punch-pin telescopic slide up and down, and second supporting plate is arranged in the lower section of the second cavity plate, and described second Lower template offers several grooves up and down, and sliding sleeve is provided in the groove, and guide post is equipped in the sliding sleeve, described to lead Column is fixed at the bottom of the second supporting plate, and the guide post telescopic slide is arranged in sliding sleeve.

Further, further include the first punch, the first punch setting is in the second cope plate bottom, and described first rushes Head is arranged downward across the second holding pad, and first punch is arranged in the central axial direction of end cap.

Advantageous effect：The utility model ensure that the molding type face fairing of end cap, solves type facial disfigurement when molding, rises The phenomenon that wrinkle or cracking, and ensure that the precision of each size, by one-off drawing mold and succeeding stretch mold at twice to multiple Miscellaneous type face carries out step drawing molding, stretches special-shaped type face on bottom wall and the cylinder-shaped side wall of brake forming, molding respectively Effect is preferable, and reasonable for structure, the high yield rate of two molds.

Description of the drawings

Attached drawing 1 is that the version of product end cap cuts open schematic diagram；

Attached drawing 2 is the product schematic diagram after invention stretches for the first time；

Attached drawing 3 is the product schematic diagram after second of stretching of invention；

Attached drawing 4 is the product schematic diagram after invention end cap edge-cutting and hole-punching；

Attached drawing 5 is the product schematic diagram after invention end cap overturning process；

Attached drawing 6 is the product schematic diagram after invention end cover side punching operation；

Attached drawing 7 is the product schematic diagram after invention end cover side molding procedure；

Attached drawing 8 is the product schematic diagram after invention end cover side fine blanking hole process；

Attached drawing 9 is the overall structure diagram of the one-off drawing mold of the utility model；

Attached drawing 10 is the partial structural diagram of the one-off drawing mold of the utility model；

Attached drawing 11 is the overall structure diagram of the succeeding stretch mold of the utility model.

Specific implementation mode

The utility model is further described below in conjunction with the accompanying drawings.

As shown in attached drawing 2 to attached drawing 8, a kind of molding processing method of end cap comprises the following steps that：

Step 1：Blanking：Blanking is carried out by blanking die, obtains the blanking piece of circular shape；

Step 2：It stretches for the first time：Preliminary elongational is carried out to blanking piece by one-off drawing mold, among stretched end cap Partial special-shaped type face, obtains the type face of keystone ring groove-like structure；As shown in Fig. 2；

Step 3：Second of stretching：Succeeding stretch is carried out to the semi-finished articles that first time stretches by succeeding stretch mold, It is positioned with special-shaped type face, the tubular walled structure and scrap (bridge) structure of stretched end cap outer ring；As shown in Fig. 3；

Step 4：Edge-cutting and hole-punching：It is positioned with the interior lumen type face of the semi-finished articles of step 3, passes through edge-cutting and hole-punching mold Clout other than the scrap (bridge) structure of semi-finished articles is cut off, obtains the edge of full round shape, and simultaneously in end cap Between part bottom wall wall body on be punched out；As shown in Fig. 4；

Step 5：Flange：It is positioned with the interior lumen type face of the semi-finished articles of step 4, by flanging die to step 3 Bottom outlet carry out flange, so that the edge of bottom outlet is turned up to cavity, formed annular boss；As shown in Fig. 5；

Step 6：Side punching：Within lumen type face positioned, by side piercing die to the side on the circumferential wall of end cap Hole carries out pre-punched hole；As shown in Fig. 6；

Step 7：Side is molded：Within lumen type face positioned, by side molding die to the side on the circumferential wall of end cap Hole is laterally molded, and the structure of side opening evagination is formed；As shown in Fig. 7；

Step 8：Side fine blanking hole：Within lumen type face positioned, by side fine punch die to the side that is generated in step 7 Hole clout is cut off, and the design size of side opening is reached.As shown in Fig. 8.The processing method of the utility model ensure that end cap The face fairing of molding type, solve the phenomenon that type facial disfigurement when molding, corrugation or cracking, and ensure that the precision of each size. It is stretched by the way that the complex profile of end cap is divided into two parts, the region that single stretches is smaller, reduces stretching difficulty, greatly The deflection for reducing plate of amplitude, the side wall of especially end cap is deeper, if passing through one-off drawing while stretched bottom wall Type face and side wall, can cause the uneven of side wall when stretching, the corner that side wall connects with bottom wall will appear cracking and The phenomenon that wrinkle, high rejection rate, therefore by substep by the type face of bottom wall it is stretched after, passing through second of stretch process, i.e., will The plate of bottom wall outer is gradually bent downwards, and to form the side wall of annular, and the dynamics of plate is evenly distributed when stretching, and stretches Molding is preferable.

Implement a kind of drawing forming mold of the molding processing method of end cap, including one-off drawing mold and succeeding stretch mould Tool, the succeeding stretch mold carry out subsequent forming processing based on the workpiece that one-off drawing mold is processed.By dividing twice The mode of step processing completes the drawing and forming to end cap.

As shown in attached drawing 9 and attached drawing 10, the one-off drawing mold is including the first lower template 1-2 and relative to described first The bottom that lower template 1-2 carries out the first cope plate 1-1, the first cope plate 1-1 of open mold is provided with cylindrical first The outer sheath of punch-pin 1-3, the first punch-pin 1-3 be equipped with the first holding pad 1-6, the first holding pad 1-6 with respect to first on Telescopic slide above and below template is covered in the outside of first time stretch zones by the first holding pad, ensures the stabilization of blanking piece, prevented The end cross-sectional shape of only its play, the first punch-pin 1-3 is inverted U-shaped structure, and direction is provided on the bottom surface of U-shaped structure The tapered protrusion 1-9 of U-shaped structure open side；It is initially formed the special-shaped type face of end cover lumen, is formed simultaneously subsequent location type face, side The positioning when processing of face postorder is provided with the first cylindrical cavity plate 1-5, first cavity plate on the first lower template 1-2 The type face of 1-5 matches with the type face of the first punch-pin, and first cavity plate is " convex " type structure, the first cavity plate 1-5's Outer ring is arranged with the first top plate 1-8, and the first top plate is higher than relative to the upper and lower telescopic slide of the first cavity plate, the first top plate 1-8 The edge in the type face of the first cavity plate 1-3；First top plate 1-8 is used to support blanking piece, meanwhile, molding when, the first top plate 1-8 with The lowest surfaces of first cavity plate 1-5 form female profile, are used for the step structure of forming ends base wall and the excessive position of side wall, and And in die sinking, the first top plate 1-8 resets move up, and jack up the workpiece after one-off drawing upwards, reduce the dress of mandril in mold Match, a plate is multi-purpose, optimizes mould structure, reduces the manufacturing cost of mold, also, due to the contact of workpiece and the first top plate Area is larger, can avoid the local deformation when ejection for using mandril to workpiece；The protrusion of the first punch-pin 1-3U type structures Part is insert 1-7 on cricoid first, and insert 1-7 is fixed at the outer ring of the first punch-pin 1-3 on described first, first The outer ring of cavity plate 1-5 is arranged with first time insert 1-4, and first time insert 1-4 is correspondingly arranged with insert 1-7 on first.The Inner ring at the outer ring of one punch-pin, the first cavity plate step is easy to wear after repeating to process, by under insert 1-7 and first on first Insert 1-4 quickly can be replaced and be repaired to punch-die, and processing is facilitated.

As shown in Fig. 11, the succeeding stretch mold is including the second lower template 2-2 and relative to second lower template The bottom that 2-2 carries out the second cope plate 2-1, the second cope plate 2-1 of open mold is provided with the second annular cavity plate 2-5, Be equipped on the inside of the second cavity plate 2-5 the second holding pad 2-3, the second holding pad 2-3 with respect to the second cope plate above and below The bottom surface of telescopic slide, the second holding pad 2-3 is provided with the binder type to match with the ahermatypic face of end cap middle section Face, the interior lumen type face of workpiece is positioned after being stretched with first time, accurate positioning, and the second cavity plate 2-5 is the rim of a bowl of back-off Shape structure；The second punch-pin 2-6 of cylinder is provided on the second lower template 2-2, the outer sheath of the second punch-pin 2-6 is equipped with Second supporting plate 2-4, the second supporting plate 2-4 is with respect to the second punch-pin telescopic slide up and down, and the second supporting plate 2-4 settings are the The lower section of two cavity plate 2-5, the second lower template 2-2 offer several grooves, sliding sleeve are provided in the groove up and down 2-7 is equipped with guide post 2-8, the guide post 2-8 in the sliding sleeve and is fixed at the bottom of the second supporting plate 2-4, and the guide post is stretched Contracting is slidably arranged in sliding sleeve.The second supporting plate 2-4 is used to support the outer ring plate body of workpiece, the flexible settings of the second supporting plate 2-4 It is oriented in lower template, and by guide post and sliding sleeve, ensures the Stable sliding of the second supporting plate, in molding, make end cap After the scrap (bridge) of open side is by the second cavity plate 2-5 moldings, keeps having the higher depth of parallelism between scrap (bridge) and bottom wall, reach size and want It asks.

As shown in Fig. 11, further include the first punch 2-10, the first punch 2-10 settings are at the second bottoms cope plate 2-1 Portion, and the first punch 2-10 is arranged downward across the second holding pad 2-3, the first punch 2-10 is arranged in end cap On heart axis direction；While the second cavity plate 2-5 is molded the side wall of end cap, by the first punch 2-10 to being rushed on bottom wall Hole, two-step are carried out at the same time, and are saved process time, are improved working efficiency.

Further include trimming component, the trimming component is arranged in the top of the second lower template 2-2, and the trimming component includes Annular groove is offered on cyclic annular cutter 2-11, the second supporting plate 2-4, the annular groove is arranged in the outer ring of the second punch-pin, and annular groove Inner ring and end cap outermost edges it is tangent, the cutter 2-11 is threaded through in the annular groove, the bottom of the second cavity plate 2-5 Face is provided with the trimming groove for supplying the cutter 2-11 deep, and the cutter with cutter 2-11 cooperations is inlaid in the trimming groove Insert, in molding, the opposite slidings of the cutter 2-11 are in annular groove, and the cutter with cutting knife insert by coordinating excision end The outer ring clout of lid.When the second cavity plate 2-5 is molded downwards, the second supporting plate moves down, when end cap open edge scrap (bridge) at After type, drive cutter 2-11 to move up by driving device, the excess waste on the outside of scrap (bridge) cut off, trimming and side wall at Type carries out in same mold, avoids the repeated clamping positioning of workpiece, reduces operating error, scrap (bridge) and end cap is made to have very High concentricity, moreover, unitary mould reasonable design, compact-sized, in same mold, it can be achieved that succeeding stretch, punching and The processing of trimming multi-process, multi-process common mode, not only significantly reduces process time, also reduces the manufacturing cost of mold.

The above is only the preferred embodiment of the utility model, it should be pointed out that：For the common skill of the art For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and Retouching also should be regarded as the scope of protection of the utility model.

Claims (3)

1. a kind of drawing forming mold of end cap processing, it is characterised in that：Including one-off drawing mold and succeeding stretch mold, institute It states succeeding stretch mold and carries out subsequent forming processing based on the workpiece that one-off drawing mold is processed；

The one-off drawing mold includes the first lower template (1-2) and carries out open mold relative to first lower template (1-2) The first cope plate (1-1), the bottom of first cope plate (1-1) is provided with cylindrical the first punch-pin (1-3), described the The outer sheath of one punch-pin (1-3) is equipped with the first holding pad (1-6), and first holding pad (1-6) is with respect to above and below the first cope plate The end cross-sectional shape of telescopic slide, first punch-pin (1-3) is inverted U-shaped structure, and court is provided on the bottom surface of U-shaped structure To the tapered protrusion (1-9) of U-shaped structure open side；The first cylindrical cavity plate (1- is provided on first lower template (1-2) 5), the type face of first cavity plate (1-5) matches with the type face of the first punch-pin, and first cavity plate is " convex " type structure, The outer ring of first cavity plate (1-5) is arranged with the first top plate (1-8), and the first top plate stretches above and below relative to the first cavity plate to be slided It is dynamic, edge of first top plate (1-8) higher than the type face of the first cavity plate (1-5)；First punch-pin (1-3) U-shaped structure Protrusion is insert (1-7) on cricoid first, and insert (1-7) is fixed at the first punch-pin (1-3) on described first Outer ring is arranged with first time insert (1-4) in the outer ring of the first cavity plate (1-5), and first time insert (1-4) is inlayed on first Block (1-7) is correspondingly arranged.

2. a kind of drawing forming mold of end cap processing according to claim 1, it is characterised in that：The succeeding stretch mould Tool includes the second lower template (2-2) and carries out the second cope plate (2-1) of open mold relative to second lower template (2-2), The bottom of second cope plate (2-1) is provided with the second cavity plate (2-5) of annular, is worn on the inside of second cavity plate (2-5) Equipped with the second holding pad (2-3), second holding pad (2-3) is with respect to telescopic slide above and below the second cope plate, second pressure The bottom surface of flitch (2-3) is provided with the binder type face to match with the ahermatypic face of end cap middle section, the second cavity plate (2- 5) it is the bowl-mouth shape structure being buckled to；It is provided with cylindrical second punch-pin (2-6) on second lower template (2-2), described second The outer sheath of punch-pin (2-6) be equipped with the second supporting plate (2-4), second supporting plate (2-4) with respect to the second punch-pin up and down telescopic slide, And second supporting plate (2-4) is arranged in the lower section of the second cavity plate (2-5), second lower template (2-2) opens up up and down There are several grooves, sliding sleeve (2-7) is provided in the groove, guide post (2-8), the guide post (2-8) are equipped in the sliding sleeve It is fixed at the bottom of the second supporting plate (2-4), the guide post telescopic slide is arranged in sliding sleeve.

3. a kind of drawing forming mold of end cap processing according to claim 2, it is characterised in that：It further include the first punch (2-10), first punch (2-10) setting is in the bottom the second cope plate (2-1), and first punch (2-10) passes through the Two holding pads (2-3) are arranged downward, and first punch (2-10) is arranged in the central axial direction of end cap.