CN202638925U

CN202638925U - Extrusion die for manufacturing refrigerator refrigeration compressor piston

Info

Publication number: CN202638925U
Application number: CN 201220266611
Authority: CN
Inventors: 庄希平; 夏祖伟; 苏子法
Original assignee: NINGBO YONGWEI GROUP CO Ltd
Current assignee: NINGBO YONGWEI GROUP CO Ltd
Priority date: 2012-06-07
Filing date: 2012-06-07
Publication date: 2013-01-02
Anticipated expiration: 2022-06-07

Abstract

The utility model discloses an extrusion die for manufacturing a refrigerator refrigeration compressor piston. The extrusion die comprises an upper die plate and a lower die plate, an upper die set is fixed on the upper die plate, an inner tapping portion I, an inner tapping portion II and an inner tapping portion III which are mutually sleeved are sequentially arranged in a cavity of the upper die set from inside to outside, the end portion of the inner tapping portion I is in a spherical cap shape and protrudes out of the inner tapping portion II, the end portion of the inner tapping portion II is sleeved on the outside of the inner tapping portion I in a gapped mode, the end portion of the inner tapping portion II protrudes out of a die hole of the inner tapping portion III, the inner tapping portion I and the inner tapping portion II are fixed on the upper die plate, a lower die set is fixed on the lower die plate of the die, a lower die tapping portion is sleeved in a cavity of the lower die set, the end portion of the lower die tapping portion is located in a die hole of the lower die set, the inner diameter of the die hole of the lower die set is equal to that of the die hole of the inner tapping portion III of the upper die set, the lower die set and the upper die set are concentrically arranged, and the upper die plate and the lower die plate are connected through an outer guide post and an outer guide sleeve which are fixed on the upper die plate and the lower die plate. The piston formed by the die has the advantages of being abrasion resistant, high in quality and low in consumption.

Description

Extrusion die for the manufacture of the refrigerating compressor for refrigerator piston

Technical field

The utility model relates to technical field of mold, relates in particular to the extrusion die for the manufacture of the refrigerating compressor for refrigerator piston.

Background technology

The performance quality of the refrigeration plants such as refrigerator mainly is the quality that is its refrigeration compressor performance.Ball bond formula connecting rod hermetic compressor is the most general frame mode of China's freezer compressor at present, mainly contain at present two kinds of methods of making ball bond formula connecting rod hermetic compressor piston, the first is to adopt high-carbon round steel shaping by stock removal, its shortcoming is that utilization rate of raw materials only has 10%-15%, the machining amount is large, consuming time, manufacturing cost is high, second method is to adopt the iron(-)base powder compacting sintering to be shaped, stock utilization can reach more than 90%, allowance is few, but product tissue density only has 6.6 ~ 6.7g/cm ³, organize loose wearability not good.

The utility model content

Technical problem to be solved in the utility model is to overcome the above-mentioned deficiency of prior art and a kind of extrusion die for the manufacture of the refrigerating compressor for refrigerator piston is provided, and that the ball bond formula piston that adopts this mould extruding to obtain has is wear-resisting, the characteristics of high-quality, low consumption.

The technical scheme in the invention for solving the above technical problem is: the extrusion die for the manufacture of the refrigerating compressor for refrigerator piston comprises cope match-plate pattern and lower bolster, be fixed with upper bolster on the cope match-plate pattern of described mould, the inside fire attack I, inside fire attack II, the inside fire attack III that are nested are arranged in the cavity of upper bolster from inside to outside successively, the end of inside fire attack I is spherical and protrudes from the inside fire attack II, the end of inside fire attack II is gapped to be enclosed within outside the inside fire attack I, the end nipple of inside fire attack II is for the nib of inside fire attack III, and inside fire attack I, inside fire attack II are fixed on the cope match-plate pattern; Be fixed with die shoe on the lower bolster of described mould, the cavity inner sleeve of die shoe has counterdie to attack, counterdie is attacked the nib that the end is positioned at die shoe, the nib of die shoe equates with the nib internal diameter of the inside fire attack III of upper bolster, arrange with one heart, cope match-plate pattern, lower bolster link to each other with outer bush by the outer guiding post that is fixed thereon.

Have the hole on the described cope match-plate pattern, be provided with straight guide pillar in the hole, an end and the inside fire attack III of straight guide pillar are joined.

Have the hole on the described lower bolster, be provided with straight guide pillar in the hole, an end of straight guide pillar and counterdie are attacked and are joined.

Described outer guiding post is arranged on the lower bolster, and outer bush is arranged on the cope match-plate pattern, and outer guiding post can insert outer bush and slide.

Described inside fire attack I, inside fire attack II are fixed by screws on the cope match-plate pattern, and locate by straight pin.

Described upper bolster is fixed by screw and cope match-plate pattern, and described die shoe is fixed by screw and lower bolster.

Compared with prior art, the utility model has the advantage of: adopt this extrusion die extrusion molding to make refrigeration compressor ball bond formula piston, the machining amount of following process is few, saves raw material, Cost reduction; This mould is provided with the positioning elements such as outer guiding post, outer bush, straight guide pillar, guarantees the precision of extruding; Metal is to be in the three-dimensional compressive stress state in the extrusion process, and the tissue of material internal is continuous after the distortion; In Cold Extrusion Process, utilize the cold hardening characteristic of metal material cold deformation, mechanical strength greatly improves, and the piston that integrated quality adopts the round steel shaping by stock removal and adopts the ferrous based powder metallurgical compacting sintering to be shaped is greatly superior.

Description of drawings

Fig. 1 is front view of the present utility model.

Fig. 2 is side view of the present utility model.

Fig. 3 is upward view of the present utility model.

Fig. 4 is top view of the present utility model.

Fig. 5 is schematic perspective view of the present utility model.

Fig. 6 be among Fig. 2 A-A to cutaway view.

Fig. 7 is the end view of inside fire attack I of the present utility model and inside fire attack II.

Among the figure: 1, inside fire attack I; 2, inside fire attack II; 3, upper bolster; 4, inside fire attack III; 5, cope match-plate pattern; 6, die shoe; 7, counterdie is attacked; 8, lower bolster; 9, outer guiding post; 10 outer bush; 11, screw; 12, straight pin; 13,14 straight guide pillars.

The specific embodiment

Below in conjunction with accompanying drawing, embodiment the utility model is further specified.

Embodiment, extremely shown in Figure 7 such as Fig. 1, extrusion die for the manufacture of the refrigerating compressor for refrigerator piston comprises cope match-plate pattern 5 and lower bolster 8, be fixed with outer guiding post 9 on the lower bolster 8, the corresponding outer bush 10 that arranges on the cope match-plate pattern 5, outer guiding post 9 can insert outer bush 10 and slide, as the guider of bolster 8 relative motions.

Adopt screw 11 to be fixed with upper bolster 3 on the cope match-plate pattern 5, upper bolster 3 has the cylindrical shape of step in being, what be nested successively from inside to outside in its cavity is provided with inside fire attack I 1, inside fire attack II 2, inside fire attack III 4, inside fire attack I 1 is fixed on the cope match-plate pattern 5 by screw 11 with inside fire attack II 2, the end of inside fire attack I 1 is spherical, the end of inside fire attack II 2 is gapped to be enclosed within outside the end of inside fire attack I 1, the spherical inside fire attack II 2 that protrudes from of inside fire attack I 1 end, the end of inside fire attack II 2 is passed the nib of inside fire attack III 4 and is given prominence to inside fire attack III 4, and the step of inside fire attack III 4 and upper bolster 3 is limited in inside fire attack III 4 in the cavity of upper bolster 3.

Adopt screw 11 to be fixed with die shoe 6 on the lower bolster 8, the cavity inner sleeve of die shoe 6 has counterdie to attack 7, and counterdie is attacked the nib that 7 end is positioned at die shoe 6, and the nib of die shoe 6 equates with the nib internal diameter of upper bolster 3, up and down with one heart setting.

For realizing accurate location, the easy-unloading of inside fire attack III 4, have the hole on the cope match-plate pattern 5, be provided with straight guide pillar 13 in the hole, an end and the inside fire attack III 4 of straight guide pillar are joined.

Be similarly and realize that counterdie attacks 7 accurate location, easy-unloading, have the hole on the lower bolster 8, be provided with straight guide pillar 14 in the hole, an end of straight guide pillar and counterdie are attacked 7 and are joined.

Inside fire attack I 1, inside fire attack II 2 are located by straight pin 12 after being fixed in cope match-plate pattern 5 by screw 11.

During use, to be fixed on the forcing press behind each assembling parts of mould,

straight guide pillar

13,14 can play the effect of location, blank is placed in the nib of die shoe 6, exert pressure afterwards, cope match-plate pattern 5 is mutually close with lower bolster 8, outer guiding post 9 has cooperated the motion guide effect with outer bush 10, inside fire attack III 4 is with after die shoe 6 contacts, blank is closed in the nib, blank be subjected to inside fire attack I 1, inside fire attack II 2, counterdie attack 7 be squeezed in the nib internal shaping, after the shaping, the effect that straight guide pillar 14 plays head part ejects nib internal shaping spare.

Claims

1. for the manufacture of the extrusion die of refrigerating compressor for refrigerator piston, comprise cope match-plate pattern and lower bolster, it is characterized in that: be fixed with upper bolster on the cope match-plate pattern of described mould, the inside fire attack I, inside fire attack II, the inside fire attack III that are nested are arranged in the cavity of upper bolster from inside to outside successively, the end of inside fire attack I is spherical and protrudes from the inside fire attack II, the end of inside fire attack II is gapped to be enclosed within outside the inside fire attack I, and the end nipple of inside fire attack II is for the nib of inside fire attack III, and inside fire attack I, inside fire attack II are fixed on the cope match-plate pattern; Be fixed with die shoe on the lower bolster of described mould, the cavity inner sleeve of die shoe has counterdie to attack, counterdie is attacked the nib that the end is positioned at die shoe, the nib of die shoe equates with the nib internal diameter of the inside fire attack III of upper bolster, arrange with one heart, cope match-plate pattern, lower bolster link to each other with outer bush by the outer guiding post that is fixed thereon.

2. the extrusion die for the manufacture of the refrigerating compressor for refrigerator piston according to claim 1 is characterized in that: have the hole on the described cope match-plate pattern, be provided with straight guide pillar in the hole, an end and the inside fire attack III of straight guide pillar are joined.

3. the extrusion die for the manufacture of the refrigerating compressor for refrigerator piston according to claim 1 is characterized in that: have the hole on the described lower bolster, be provided with straight guide pillar in the hole, an end of straight guide pillar and counterdie are attacked and are joined.

4. the extrusion die for the manufacture of the refrigerating compressor for refrigerator piston according to claim 1, it is characterized in that: described outer guiding post is arranged on the lower bolster, and described outer bush is arranged on the cope match-plate pattern, and outer guiding post can insert outer bush and slide.

5. the extrusion die for the manufacture of the refrigerating compressor for refrigerator piston according to claim 1, it is characterized in that: described inside fire attack I, inside fire attack II are fixed by screws on the cope match-plate pattern, and locate by straight pin.

6. the extrusion die for the manufacture of the refrigerating compressor for refrigerator piston according to claim 1, it is characterized in that: described upper bolster is fixed by screw and cope match-plate pattern.

7. the extrusion die for the manufacture of the refrigerating compressor for refrigerator piston according to claim 1, it is characterized in that: described die shoe is fixed by screw and lower bolster.