CN1063359C

CN1063359C - Method and mould for pressing lock clip of air valve

Info

Publication number: CN1063359C
Application number: CN96101688A
Authority: CN
Inventors: 俞黎明
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-18
Filing date: 1996-04-18
Publication date: 2001-03-21
Anticipated expiration: 2016-04-18
Also published as: CN1162509A

Abstract

The present invention relates to a method and a mould for pressing a lock clip of an air valve. A top rod and a concave die are fixed on the lower part of an upper frame beam, a core is arranged on a lower frame beam, and one end of the core is provided with at least one shoulder bulge. The top rod is driven by the downward movement of the upper frame beam to extrude and shape bending forming blank materials processed byr preprocessing processes of pulling forming, etc., and the blank materials are arranged on the concave die and is covered on the periphery of the core; then, finished products are obtained through slitter edge milling, chamfering, surface grinding, hot processing, etc. The present invention can be processed by an ordinary pressure vehicle. The present invention has the advantages of simple structure, convenient manufacture and use, no scratch damage to the manufactured lock clip of the air valve after two times of milling processing, high accuracy, capability of manufacturing the lock clip of the air valve with a plurality of shoulder bulges, etc.

Description

A kind of method of valve collet and required mould thereof suppressed

The present invention relates to a kind ofly make the method for valve collet and required mould thereof by cold extrusion.

The engine valve lock clamp of automobiles such as the masses of domestic production at present, Audi, because of its geometric accuracy requires height, technical difficulty is big, and is difficult to production domesticization, always according to being disinclined to import.Abroad when producing this type of valve collet, all adopt earlier blanking again behind the material pulling shaping, and with the essence bed moulding of bending in a state of excitement, then through the flat surface grinding, the manufacture method of operation such as heat treatment and polishing, this manufacture method, at first exist can only with essence in a state of excitement the bed process, can not produce with conventional forcing press, cost is higher; Secondly, the valve collet with the method makes because of can't can cause scratch in its both sides with avoiding, makes and rouses protruding defective that contact-making surface is less when practical set, and influences the precision of valve collet.

Chinese patent ZL94246657.8 discloses a kind of mould that valve collet is used of suppressing, by on set a roof beam in place, under set a roof beam in place and sliding guide pillar is formed mould bases, fixing its top on last setting a roof beam in place is that nearly semi-cylindrical shoulder is protruding, the bottom is the punch of nearly cylindrical core, be close to described core and be provided with discharge arm road on one side perpendicular to punch side, core pattern place, from the punch upper surface to the lower surface setting slide bar road vertical with the discharge arm road, finish knockout course by the joining effect in discharge arm road and slide bar road of discharge arm and slide bar, and under set a roof beam in place on corresponding fixedly die with punch and backform device.Though changing the domestic past, this mould adopt Cutting Process to make the history of valve collet, make that making valve collet by compacting has become reality, however this mould structure complexity, and molding is difficulty, make production cost higher relatively, and can only make a protruding valve collet of shoulder is only arranged.

One of purpose of the present invention provides a kind of method of the manufacturing valve collet that can process with ordinary press.

Another object of the present invention is to provide a kind of simple in structure for above-mentioned purpose, easy to use, cost of manufacture is relatively low, and the valve collet both sides that make do not have scratch, realizes that when practical set suppressing of large tracts of land contact has the mould that the protruding valve collet of a plurality of shoulders is used.

First purpose of the present invention realizes in the following way: earlier with the material pulling shaping, through blanking, bending is shaped and makes stock, then stock is placed in the mould seal shaping with forcing press after, promptly can be made into required valve collet through turner skill slitter edge and chamfering, flat surface grinding, heat treatment and polishing again.

Mould required for the present invention is realized in the following way: by mould bases, push rod, composition such as die and core, described mould bases by on set a roof beam in place and under set a roof beam in place and have at least two rolling guide pillars to be formed, on set a roof beam in place and under be connected by the rolling guide pillar between setting a roof beam in place, it is the up-small and down-big die cavity that is truncated cone-shaped that the lower central place that it is characterized in that described die is provided with its inner surface, die case passes through end of push rod and the die cavity centre bore of push rod from described die, die by securing member and described on set a roof beam in place and fix, on described following setting a roof beam in place, be fixed with its upper end and have a core that shoulder is protruding, the center line overlaid of the die cavity on the center line of described core and the described die at least.

The present invention adopts ordinary press to act on mould, and, make the die cavity on the die and the mutual extrusion of core be shaped by being placed in the stock around the core in the push rod Extruding die, handle and make valve collet through a series of later process again, compared to prior art, having available ordinary press can process, and mould structure is simple, makes easy to use, the valve collet both sides that make do not have scratch, contact-making surface is big, and precision is higher, can make distinguishing features such as the protruding valve collet of a plurality of shoulders.

Figure one is the structural representation of mould required for the present invention.

Now in conjunction with the accompanying drawings, a detailed description specific embodiment of the present invention:

By on set a roof beam in place 4, the 14 and four rolling guide pillars 15 of setting a roof beam in place down form mould bases.Set a roof beam in place on described and by securing member 3 die shank 1 that floats is installed on 4, and below the die shank 1 that floats, spring 2 is installed, described spring 2 pass set a roof beam in place 4 relative with push rod 7, described push rod 7 vertically passes patrix cushion block 6, it is the up-small and down-big die cavity that is circular platform type that the lower central place of die 9 is provided with inner surface, described die 9 is enclosed within an end of push rod 7, and pass through the die cavity centre bore of push rod 7 from described die 9, and being with die lasso 8 in the outside of die 9, described die lasso 8 and patrix cushion block 6 are fixed in by securing member 5 sets a roof beam in place on described on 4.The upper end has the protruding core 10 of the shoulder core location-plate 11 of vertically packing at least, behind the described core location-plate 11 pad upper and lower mould cushion blocks 12, under being fixed in, securing member 13 sets a roof beam in place on 14, and the center line overlaid of the die cavity on the center line of core 10 and the described die 9.

When on set a roof beam in place 4 when being in top dead centre, die 9 is separated with core 10, will be in advance through pulling shaping, blanking and polyurethane rubber bend mould bend the stock of moulding be wrapped in described core 10 around, when on set a roof beam in place under 4 the effects at machinery, make and to set a roof beam in place 4 and be fixed in the patrix cushion block 6 of setting a roof beam in place on described on 4, die 9 and die location-plate 8 move vertically downward along rolling guide pillar 15, die cavity in the die 9 entangles and is wrapped in described core 10 stock on every side, under the effect of the push rod 7 that moves downward at the same time, the extruding stock is shaped, then under the effect of machinery, on set a roof beam in place 4 when moving up to top dead centre, make the valve collet that makes move upward with die 9 together with core 10, core 10 breaks away from core location-plate 11, push rod 7 is subjected to the elastic force effect of spring 2 to push core 10 down simultaneously, makes core 10 break away from die 9 together with the valve collet that makes, and then the valve collet that makes is peeled off core 10, get final product to finish the demoulding, so go round and begin again.Valve collet after the demoulding through turner skill slitter edge and chamfering, flat surface grinding, polishing, again through polishing, is promptly made the finished product of valve collet after heat treatment carburizing and quenching, tempering.

Claims

1. method of suppressing valve collet is characterized in that:

A. pull-up material;

B. blanking;

C. the shaping of bending makes stock;

D. stock is made semi-finished product in the shaping of mould inner sealing;

E. with the semi-finished product turner skill slitter edge and the chamfering that make;

F. flat surface grinding;

G. heat treatment, carburizing and quenching, tempering;

H. polishing.

2. mould as claimed in claim 1, by mould bases, push rod [7], die [9] and core compositions such as [10], described mould bases by on set a roof beam in place [4], under set a roof beam in place [14] and have at least two rolling guide pillars [15] to form, on set a roof beam in place [4] and under set a roof beam in place and be connected by rolling guide pillar [15] between [14], it is the up-small and down-big die cavity that is truncated cone-shaped that the lower central place that it is characterized in that described die [9] is provided with its inner surface, die [9] is enclosed within an end of push rod [7], and pass through the die cavity centre bore of push rod [7] from described die [9], die [9] by securing member and described on set a roof beam in place [4] fix, on described set a roof beam in place down [14], be fixed with its upper end and have a core [10] that shoulder is protruding, the center line overlaid of the die cavity on the center line of described core [10] and the described die [9] at least.

3. mould as claimed in claim 2 is equipped with unsteady die shank [1] on it is characterized in that setting a roof beam in place on described [4], and in the below of described unsteady die shank [1] spring [2] is installed, and it is relative with push rod [7] that described spring [2] passes set a roof beam in place [4].

4. mould as claimed in claim 2, it is characterized in that setting a roof beam in place is fixed with patrix cushion block [6] between [4] and die [9], and push rod [7] vertically passes described patrix cushion block [6].

5. mould as claimed in claim 2, the outside that it is characterized in that described die [9] are with by securing member [5] and are fixed in die lasso [8] on set a roof beam in place [4].

6. mould as claimed in claim 4 is characterized in that being with in the outside of described die [9] by securing member [5] and is fixed in die lasso [8] on set a roof beam in place [4].

7. mould as claimed in claim 2, it is characterized in that described core [10] vertically is installed on by securing member [13] is fixed on the core location-plate [11] on set a roof beam in place down [14].

8. mould as claimed in claim 7, it is characterized in that described core location-plate [11] and under set a roof beam in place and be fixed with counterdie cushion block [12] between [14].