CN209452800U - A kind of high length-diameter ratio bar compacting tool set - Google Patents

Abstract

The utility model discloses a kind of high length-diameter ratio bar compacting tool sets, belong to compression molding die technical field, it solves to form hard material or ceramic material using machining and can generate many waste of material, processing efficiency is low, to process tool serious wear, the higher problem of preparation cost；Its technical characteristic is: including upper punch, mold core, die sleeve and die holder, the mold core is to divide half structure, and the mold core is placed on die holder, and the die sleeve is matched with mold core, die holder plays limit and fixed function, and the upper punch and mold core matching synthesis are cylindrical；The utility model is applicable to prepare a variety of different draw ratio specification hard materials and ceramic material bar, reduces the displacement of pressing process powder, reduces the abrasion to die cavity, helps to improve the service life of mold.

Description

A kind of high length-diameter ratio bar compacting tool set

Technical field

The utility model relates to a kind of compression molding die technical field, specifically a kind of high length-diameter ratio bar pressing die Tool.

Background technique

Compression molding is in the die cavity of powder filling metal die by dry powder or after treatment, by applying pressure Or the powder that the mode pressurizeed in heating fills pine becomes the green body with certain consistency and intensity and obtains required molding The forming method of part.Molded part compacting of traditional mold for draw ratio less than 2 is relatively easy to form；But with draw ratio Increase, especially after the draw ratio of molded part is more than 4, serious density variation easily occurs in the green body suppressed, causes material each Anisotropy seriously affects the service performance of product.In addition, requirement of the bigger molded part of draw ratio to die cavity precision is higher, right The abrasion of die cavity is more serious, demoulding difficulty is bigger and the phenomenon that edge bursts apart easily occurs；

Currently, the preparation of high length-diameter ratio hard material and ceramic material bar, generallys use extrusion forming or machining Molding.The former needs to add many auxiliary agents during the preparation process, to the more demanding of slurry, be also easy to produce mutually separation, size performance not The disadvantages of stable and conformality is poor, and it is sintered after can remain many ash contents in interiors of products, reduce the service performance of product；It adopts It is machined into form hard material or ceramic material and can generate many waste of material, processing efficiency is low, to processing Tool wear is serious, and preparation cost is higher.

Utility model content

The purpose of this utility model is to provide a kind of high length-diameter ratio bar compacting tool set, it is applicable in and prepares a variety of different major diameters Than specification hard material and ceramic material bar, reduce the displacement of pressing process powder, reduces the abrasion to die cavity, have Help improve the service life of mold, can be generated very with solving to form hard material or ceramic material using machining More waste of material, processing efficiency is low, to process tool serious wear, the higher problem of preparation cost.

To achieve the above object, the utility model provides the following technical solutions:

A kind of high length-diameter ratio bar compacting tool set, including upper punch, mold core, die sleeve and die holder, the mold core are to divide half hitch Structure, the mold core are placed on die holder, and the die sleeve is matched with mold core, die holder plays limit and fixed function, the upper mold Punching matches with mold core synthesizes cylinder.

As a further solution of the present invention: the upper punch bottom surface be arc-shaped, corresponding angle be 90 °- 150°。

The shape of the mold core bottom surface and upper punch bottom surface, which matches, as a further solution of the present invention, synthesizes circle Cylindricality, and corresponding angle is 210 ° -270 °.

The inward-facing carry out draft of the core side as a further solution of the present invention, 1 ° of drafting angle position- 3 °, the die sleeve inside faces out carry out draft, and drafting angle is 1 ° -3 °.

The die sleeve upper bottom surface is provided with limited block as a further solution of the present invention, pacifies on the die holder Fill the boss of 2mm-10mm, and die holder and die sleeve bottom surface step cooperating.

Compared with prior art, the utility model has the beneficial effects that the utility model is applicable to prepare a variety of different length Diameter reduces the displacement of pressing process powder than specification hard material and ceramic material bar, reduces the abrasion to die cavity, Help to improve the service life of mold.

Detailed description of the invention

Fig. 1 is the pressing process schematic perspective view of the utility model.

Fig. 2 is the exploded isometric schematic diagram of the utility model.

In figure: 1- upper punch, 2- mold core, 3- die sleeve, 4- limited block, 5- die holder.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Please refer to Fig. 1~2, in the utility model embodiment, a kind of high length-diameter ratio bar compacting tool set, including upper punch 1, Mold core 2, die sleeve 3 and die holder 5；The mold core 2 is to divide half structure, and cavity depth, the mould is arranged according to the work loading height of material Core 2 is placed on die holder 5, and the die sleeve 3 matches with mold core 2, die holder 5 and plays limit and fixed function, the upper punch 1 with Mold core 2, which matches, synthesizes cylinder；

1 bottom surface of upper punch is arc-shaped, and corresponding angle is between 90 ° -150 °；2 bottom surface of mold core and upper mold The shape for rushing 1 bottom surface, which matches, synthesizes cylinder, and corresponding angle is 210 ° -270 °；

The inside draft in 2 side of mold core, drafting angle are 1 ° -3 °；

Carry out draft is faced out on the inside of the die sleeve 3, drafting angle is 1 ° -3 °, and can be used cooperatively with mold core 2；

3 upper bottom surface of die sleeve is provided with limited block 4, and 3 lower bottom part of die sleeve processes the step of 5mm-10mm；

The die holder 5 have 2mm-10mm boss, and can with 3 bottom surface step cooperating of die sleeve, play limit and Fixed effect.

The working principle of the utility model is: point half mold core 2 merging is placed on die holder 5, so in pressing process Die sleeve 3 is matched with mold core 2 and die holder 5 afterwards and is limited and is fixed.It will calculate and load weighted powder be poured slowly into die cavity It is interior and carry out jolt ramming, so that the powder of each position is evenly dispersed, prevent occurring local density's deviation after compacting.By upper mold Punching 1 is placed in die cavity and is transferred at press and suppressed；Pressure is slowly applied to upper punch 1, when 1 cover board of upper punch and mould Stop pressurization after covering the contact of 3 limited blocks 4, at this point, upper punch 1 and mold core 2 cooperatively form cylinder and needed for powder have been pressed into Bar；After pressure maintaining for a period of time, slowly pressure release and it can take out mold and demoulded；When demoulding, first die holder 5 is removed, and Apply certain pressure to upper punch 1 again, at this point, stress is uniformly released since mold core 2 and die sleeve 3 are provided with drafting angle It puts rear each part and is in free state；Upper punch 1, die sleeve 3 are successively taken out, slowly opening mold core 2 can be by molding stick Material takes out；The utility model is applicable to prepare a variety of different draw ratio specification hard materials and ceramic material bar, reduces pressure The displacement of course powder processed reduces the abrasion to die cavity, helps to improve the service life of mold.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the utility model and creates and simplify description, rather than The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot It is construed as a limitation of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as Indication or suggestion relative importance or the quantity for implicitly indicating indicated technical characteristic." first ", " are defined as a result, Two " etc. feature can explicitly or implicitly include one or more of the features.It removes in the description of the present invention, Non- to be otherwise noted, the meaning of " plurality " is two or more.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (7)

1. a kind of high length-diameter ratio bar compacting tool set, including upper punch (1), mold core (2), die sleeve (3) and die holder (5), feature It is, the mold core (2) is to divide half structure, and the mold core (2) is placed on die holder (5), the die sleeve (3) and mold core (2), mould Seat (5) matches, and the upper punch (1) and mold core (2) matching synthesis are cylindrical.

2. high length-diameter ratio bar compacting tool set according to claim 1, which is characterized in that upper punch (1) bottom surface is Arc-shaped, corresponding angle are 90 ° -150 °.

3. high length-diameter ratio bar compacting tool set according to claim 2, which is characterized in that mold core (2) bottom surface with it is upper The shape of stamping (1) bottom surface, which matches, synthesizes cylinder, and corresponding angle is 210 ° -270 °.

4. high length-diameter ratio bar compacting tool set according to claim 3, which is characterized in that mold core (2) side is inside Carry out draft, 1 ° -3 ° of drafting angle position.

5. high length-diameter ratio bar compacting tool set according to claim 4, which is characterized in that on the inside of the die sleeve (3) towards Outer carry out draft, drafting angle are 1 ° -3 °.

6. high length-diameter ratio bar compacting tool set according to claim 5, which is characterized in that die sleeve (3) upper bottom surface is set It is equipped with limited block (4).

7. high length-diameter ratio bar compacting tool set according to claim 6, which is characterized in that installed on the die holder (5) The boss of 2mm-10mm, and die holder (5) and die sleeve (3) bottom surface step cooperating.