CN1162509A

CN1162509A - Method and mould for pressing lock clip of air valve

Info

Publication number: CN1162509A
Application number: CN 96101688
Authority: CN
Inventors: 俞黎明
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-18
Filing date: 1996-04-18
Publication date: 1997-10-22
Anticipated expiration: 2016-04-18
Also published as: CN1063359C

Abstract

A mould set for manufacturing air valve clamp features that a push rod and a female die are fixed at the bottom of upper beam and a core with at least one shoulder on its end part is installed on the lower beam. A method for manufacturing the air valve clamp includes such steps as moving upper beam downward to make the female die wrap around the core to shape the clamp from a pre-bent blank, turning the excess edge, chamferring, grinding and heat treatment. Its advantages are use of ordinary press, simple structure, no damage to the finished air valve clamp and high precision.

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 on set a roof beam in place, set a roof beam in place down and have at least two rolling guide pillars to form mould bases, be fixed with die and push rod on setting a roof beam in place on described, under core is installed on setting a roof beam in place.By the mutual extrusion of concave die cavity and core, make that the stock in the die is shaped.

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], set a roof beam in place down 14] and four rolling guide pillars [15] form mould bases.On setting a roof beam in place [4], described patrix unsteady die shank [1] is installed by securing member [3], and in a spring of positioned beneath [2] of the die shank [1] that floats.In the center of its underpart be provided with inner surface be up-small and down-big be round platform die cavity shape die [9] and be enclosed within die lasso [8] after, be fixed on set a roof beam in place [4] by securing member [5] together with patrix cushion block [6], the below of described spring [2] is vertically passed set a roof beam in place [4] from top to bottom with respect to the heart among the die cavity of described die [9], in described die [9], patrix cushion block [6] go up with respect to the heart among the die cavity of die [9] from patrix cushion block [6] wear vertically downward one settle push rod 7] and the hole communicate with the die cavity of die [9].The center line that the one end has a protruding core [10] of shoulder at least and the center line of die [9] die cavity coincide the vertical core location-plate [11] of packing into, core location-plate [11] is together with counterdie cushion block [12], on set a roof beam in place under securing member [13] is fixed in [14].

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] effect at machinery, make and to set a roof beam in place [4] and be fixed in patrix cushion block [6] on set a roof beam in place on described [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 that moves downward at the same time [7], 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 ］ be subjected to the elastic force effect of spring [2] to push core [10] down simultaneously, make core [10] break away from die [9] together with the valve collet that makes, 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], it is characterized in that 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, set a roof beam in place on the described below of [4] is provided with push rod [7] and die [9], the lower central place of described die [9] is provided with the up-small and down-big die cavity that is truncated cone-shaped, communicate die cavity center line overlaid on described push rod [7] and the described die [9], and on described set a roof beam in place down [14], the one end is installed and has 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.

2. a kind of mould that valve collet is used of suppressing as claimed in claim 1, tool is characterised in that on set a roof beam in place on described [4] unsteady die shank [1] is installed, and spring [2] being installed in the below of described unsteady die shank [1], it is relative with push rod [7] that described spring [2] passes set a roof beam in place [4].

3. a kind of mould that valve collet is used of suppressing as claimed in claim 1 or 2, it is characterized in that setting a roof beam in place [4] and die 9] and between be fixed with patrix cushion block [6], push rod [7 ］ vertically pass described patrix cushion block [6].

4. a kind of mould that valve collet is used of suppressing 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].

5. a kind of mould that valve collet is used of suppressing as claimed in claim 3 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].

6. as claim 2 or 4 described a kind of moulds that valve collet is used of suppressing, 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].

7. a kind of mould that valve collet is used of suppressing as claimed in claim 5, 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. a kind of mould that valve collet is used of suppressing as claimed in claim 6, 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].

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