CN211938448U

CN211938448U - Cold drawing die

Info

Publication number: CN211938448U
Application number: CN201922495291.7U
Authority: CN
Inventors: 刘朋
Original assignee: Qingdao Zeao Industry And Trade Co ltd
Current assignee: Qingdao Zeao Industry And Trade Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-11-17
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses a cold-drawing die, which comprises an outer die and an inner die, wherein the inner die is arranged in the outer die, a set groove is arranged between the outer die and the inner die, a feed inlet is arranged in the front end of the outer die, a bolt is arranged in the inner die, two ends of the bolt penetrate through the inner die and are respectively provided with a nut, the front end of the bolt is connected with a lead screw, and the top end of the lead screw is connected with a demoulding device; the demolding device comprises a fixing frame, a cylinder, a telescopic rod and a mounting plate, wherein one end of the fixing frame is fixed on the outer mold, the cylinder is installed in the fixing frame, the front end of the cylinder is connected with the telescopic rod, and the top end of the telescopic rod is connected with the mounting plate. The utility model relates to a cold drawing die, when preventing the drawing of patterns, take place to warp, improve production efficiency, and solid type gasket reduces the wearing and tearing to the cylinder, improves cylinder shaping quality, through dismantling the lead screw, takes out the cylinder, and the quick drawing of patterns when avoiding damaging the cylinder improves the mould and is suitable for efficiency, increases the stability that the cylinder was stereotyped.

Description

Cold drawing die

Technical Field

The utility model relates to a cold drawing mould technical field specifically is a cold drawing mould.

Background

In recent years, with the wide application of cold drawing technology, the cylinder barrel of the hydraulic oil cylinder is also manufactured by adopting a cold drawing process. The blank is firstly subjected to the pretreatment procedures of acid washing, phosphorization, saponification and the like, and then the cylinder barrel is formed and processed by adopting a cold drawing process. In the cold drawing process, the inner and outer dies on the cold drawing machine restrain the plastic deformation of the material to form the inner and outer circular surfaces of the cold drawn steel tube with high precision. The cold-drawing processing technology has the characteristics of high processing efficiency and high material utilization rate, the processed material also has the advantages of good mechanical property, high size precision and low surface roughness, the existing cold-drawing die has poor stability, the shaping effect is poor during shaping, the cylinder barrel is easily damaged, and the demoulding is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cold-drawing die, when preventing the drawing of patterns, take place to warp, improve production efficiency, and solid type gasket reduces the wearing and tearing to the cylinder, improves cylinder shaping quality, through dismantling the lead screw, takes out the cylinder, and the quick drawing of patterns when avoiding haring the cylinder improves the mould and is suitable for efficiency, increases the stability that the cylinder was stereotyped, has solved the problem among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: a cold-drawing die comprises an outer die and an inner die, wherein the inner die is installed in the outer die, a set groove is formed between the outer die and the inner die, a feed inlet is formed in the front end of the outer die, a bolt is installed in the inner die, two ends of the bolt penetrate through the inner die and are respectively provided with a nut, the front end of the bolt is connected with a lead screw, and the top end of the lead screw is connected with a demoulding device;

the demolding device comprises a fixing frame, an air cylinder, a telescopic rod and an installation plate, wherein one end of the fixing frame is fixed on an outer mold, the air cylinder is installed in the fixing frame, the front end of the air cylinder is connected with the telescopic rod, the top end of the telescopic rod is connected with the installation plate, a cylinder barrel is arranged between the outer mold and an inner mold, an inner groove is formed in the cylinder barrel, the inner mold is arranged in the inner groove of the cylinder barrel, a fixing seat is arranged at the rear end of the outer mold, a cylinder outlet is arranged in the fixing.

Preferably, an anti-abrasion layer is attached to the inner wall of the outer die, and the cylinder barrel enters the shaping groove between the outer die and the inner die through the feed inlet.

Preferably, the nuts on the bolts at the two ends of the inner die are connected with the front end face and the rear end face of the inner die through fixing gaskets.

Preferably, the top end of the screw rod is provided with a connecting plate, the connecting plate is fixed on the mounting plate through screws, and the inner die is movably connected with the cylinder barrel through a demoulding device.

Preferably, the outer surface of the inner die is provided with a plurality of groups of corresponding reducing and fixing belts which are connected with the inner groove of the cylinder barrel through the reducing and fixing belts.

Preferably, the diameter of the feeding hole is larger than that of the shaping groove, and an inclined profile is arranged between the feeding hole and the shaping groove.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model relates to a cold-drawing mould, open between external mold and the centre form and set for the type groove, the inside feed inlet that sets up of external mold front end, the diameter of feed inlet is greater than the design groove diameter, set up oblique profile between feed inlet and the design groove, the external mold rear end sets up solid type seat, sets up out the nozzle in the solid type seat, goes out the solid type gasket of nozzle inner wall, through setting up solid type seat for carry out solid type to the cylinder, when preventing the drawing of patterns, take place to warp, improve production efficiency, and the wearing and tearing to the cylinder of solid type gasket reduction, improve cylinder shaping quality.

2. The utility model relates to a cold drawing die utensil, set up the inside groove in the cylinder, the centre form sets up in the inside groove of cylinder, lead screw top erection joint board, the connecting plate passes through the screw fixation on the mounting panel, and the centre form passes through shedder and cylinder swing joint, the centre form surface sets up the reducing area of deciding that the multiunit corresponds, through the internal groove connection of reducing area of deciding with the cylinder, after the shaping, drive the centre form retrogradation through the cylinder, thereby it is deviate from the setting inslot to drive the cylinder, through dismantling the lead screw, take out the cylinder, the quick drawing of patterns when avoiding damaging the cylinder, improve the mould and be suitable for efficiency, increase the stability that the.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic diagram of the cylinder barrel and the outer mold of the present invention;

FIG. 3 is a schematic diagram of the cylinder barrel and the inner mold according to the present invention;

FIG. 4 is an enlarged view of the point A of the present invention;

fig. 5 is a sectional view of the external mold structure of the present invention.

In the figure: 1. an outer mold; 11. a feed inlet; 2. an inner mold; 21. a bolt; 211. a nut; 212. fixing a gasket; 22. a screw rod; 221. a connecting plate; 3. a shaping groove; 4. a demolding device; 41. a fixed mount; 42. a cylinder; 43. a telescopic rod; 44. mounting a plate; 5. a cylinder barrel; 51. an inner tank; 6. a fixing seat; 61. a barrel outlet; 62. and (5) fixing the gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a cold-drawing die comprises an outer die 1 and an inner die 2, wherein the inner die 2 is installed in the outer die 1, a shaping groove 3 is formed between the outer die 1 and the inner die 2, a feed inlet 11 is formed in the front end of the outer die 1, the diameter of the feed inlet 11 is larger than that of the shaping groove 3, an inclined molding surface is formed between the feed inlet 11 and the shaping groove 3, a fixing seat 6 is arranged at the rear end of the outer die 1, a cylinder outlet 61 is formed in the fixing seat 6, a fixing gasket 62 is arranged on the inner wall of the cylinder outlet 61 and used for fixing a cylinder barrel 5 by arranging the fixing seat 6, deformation is prevented during demolding, the production efficiency is improved, the fixing gasket 62 reduces abrasion on the cylinder barrel 5, and the molding quality of the cylinder barrel.

Referring to fig. 3-5, a bolt 21 is installed in an inner mold 2, two ends of the bolt 21 penetrate through the inner mold 2 to respectively install nuts 211, the front end of the bolt 21 is connected with a screw rod 22, the nuts 211 on the bolts 21 at two ends of the inner mold 2 are connected with the front and rear end faces of the inner mold 2 through fixing gaskets 212, the top end of the screw rod 22 is connected with a demolding device 4, the demolding device 4 comprises a fixing frame 41, an air cylinder 42, an expansion rod 43 and a mounting plate 44, one end of the fixing frame 41 is fixed on the outer mold 1, the air cylinder 42 is installed in the fixing frame 41, the front end of the air cylinder 42 is connected with the expansion rod 43, the top end of the expansion rod 43 is connected with the mounting plate 44, a cylinder 5 is arranged between the outer mold 1 and the inner mold 2, an inner groove 51 is arranged in the cylinder 5, the

inner mold

2, 2 surfaces of centre form set up the reducing area of multiunit correspondence, through reducing area of deciding the area and be connected with the inside groove 51 of cylinder 5, after the shaping, drive centre form 2 retrusions through cylinder 42 to drive cylinder 5 and deviate from the design inslot 3, through dismantling lead screw 22, take out cylinder 5, the quick drawing of patterns when avoiding haring cylinder 5 improves the mould and is suitable for efficiency, increases the stability that cylinder 5 was stereotyped.

In summary, the following steps: the utility model discloses a cold-drawing die, set type groove 3 is opened between outer mold 1 and interior mould 2, feed inlet 11 is set up to the inside of outer mold 1 front end, the diameter of feed inlet 11 is greater than the diameter of set type groove 3, set up the inclined profile between feed inlet 11 and the set type groove 3, outer mold 1 rear end sets up solid type seat 6, set up out tube mouth 61 in the solid type seat 6, go out tube mouth 61 inner wall solid type gasket 62, through setting up solid type seat 6, be used for carrying out the solid type to cylinder 5, when preventing drawing of patterns, take place to warp, improve production efficiency, and solid type gasket 62 reduces the wearing and tearing to cylinder 5, improve the cylinder 5 shaping quality, set up interior groove 51 in the cylinder 5, interior mould 2 sets up in the interior groove 51 of cylinder 5, lead screw 22 top installation connecting plate 221, connecting plate 221 passes through the screw fixation on mounting panel 44, and interior mould 2 passes through shedder 4 and cylinder 5 swing joint, interior mould 2 surface sets up, through reducing area of deciding the type and being connected with the inside groove 51 of cylinder 5, after the shaping, drive centre form 2 retrusion through cylinder 42 to drive cylinder 5 and deviate from the design inslot 3, through dismantling lead screw 22, take out cylinder 5, the quick drawing of patterns when avoiding haring cylinder 5 improves mould application efficiency, increases the stability that cylinder 5 was stereotyped.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A cold-drawing die comprises an outer die (1) and an inner die (2), and is characterized in that: the inner die (2) is installed in the outer die (1), a set-type groove (3) is formed between the outer die (1) and the inner die (2), a feed inlet (11) is formed in the front end of the outer die (1), a bolt (21) is installed in the inner die (2), two ends of the bolt (21) penetrate through the inner die (2) and are respectively provided with a nut (211), the front end of the bolt (21) is connected with a screw rod (22), and the top end of the screw rod (22) is connected with a demoulding device (4);

demoulding device (4) are including mount (41), cylinder (42), telescopic link (43) and mounting panel (44), and mount (41) one end is fixed on external mold (1), installs cylinder (42) in mount (41), and telescopic link (43) are connected to cylinder (42) front end, and telescopic link (43) top is connected with mounting panel (44), set up cylinder (5) between external mold (1) and internal mold (2), set up inside groove (51) in cylinder (5), and internal mold (2) set up in inside groove (51) of cylinder (5), external mold (1) rear end sets up solid type seat (6), sets up out bobbin opening (61) in solid type seat (6), goes out bobbin opening (61) inner wall solid type gasket (62).

2. A cold-drawing die according to claim 1, wherein: the inner wall of the outer die (1) is attached with an anti-abrasion layer (12), and the cylinder barrel (5) enters the fixed groove (3) between the outer die (1) and the inner die (2) through the feed inlet (11).

3. A cold-drawing die according to claim 1, wherein: nuts (211) on bolts (21) at two ends of the inner die (2) are connected with the front end face and the rear end face of the inner die (2) through fixing gaskets (212).

4. A cold-drawing die according to claim 1, wherein: the top end of the screw rod (22) is provided with a connecting plate (221), the connecting plate (221) is fixed on the mounting plate (44) through screws, and the inner die (2) is movably connected with the cylinder barrel (5) through a demoulding device (4).

5. A cold-drawing die according to claim 1, wherein: the outer surface of the inner die (2) is provided with a plurality of groups of corresponding reducing and fixing belts which are connected with the inner groove (51) of the cylinder barrel (5).

6. A cold-drawing die according to claim 1, wherein: the diameter of feed inlet (11) is greater than the constant head tank (3) diameter, sets up oblique profile between feed inlet (11) and the constant head tank (3).