CN214290833U

CN214290833U - Forming die of porous hard alloy product

Info

Publication number: CN214290833U
Application number: CN202023173451.5U
Authority: CN
Inventors: 金璇; 张彩霞
Original assignee: Wuhan Xinrui Alloy Tools Co ltd
Current assignee: Wuhan Xinrui Alloy Tools Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-09-28
Anticipated expiration: 2030-12-25

Abstract

The utility model relates to a forming die of a porous hard alloy product, which comprises a female die, an upper punch, a lower punch, a central core rod and a plurality of peripheral core rods, wherein the upper punch, the lower punch, the central core rod and the plurality of peripheral core rods are arranged in the female die; the lower punch is of a cylindrical table structure, the center of the lower punch is provided with a center through hole for the center core rod to pass through, and the lower punch is provided with a plurality of peripheral through holes for the peripheral core rods to pass through along the circumferential direction by taking the central axis as the center; the lower punch and the upper punch are opposite and matched with the female die, the central core rod can penetrate through the central through hole of the lower punch and the central through hole of the upper punch, and the peripheral core rod can penetrate through the peripheral through holes of the lower punch and the peripheral through holes of the upper punch. The mold manufacturing process is simpler, and the manufacturing period is shortened; the mould is not easy to damage in the using process, the damage rate of the mould is low, and the production cost is reduced; after the pressing is finished, the demoulding is easier, the problem of difficult demoulding of the pressed blank is effectively solved, and the rejection rate is reduced.

Description

Forming die of porous hard alloy product

Technical Field

The utility model relates to a forming die of porous carbide goods.

Background

A porous hard alloy product 101 is shown in figure 1, and has a cylindrical structure, a central through hole is arranged in the center, a central axis is taken as the center, a plurality of peripheral through holes are arranged in the circumferential direction, and the hole diameters of the central through hole and the peripheral through holes are smaller, and the current press forming method comprises the following steps: the pressing is carried out by adopting a combined die of a female die, an upper punch and a lower punch. There are major problems: the lower punch structure is complex, the processing difficulty is high, and the lower punch structure is easy to damage in the using process; the contact surface of the lower punch and the pressed blank is more, and the separation difficulty of the lower punch and the pressed blank is higher after the pressing is finished.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects existing in the prior art and providing a forming die for a porous hard alloy product.

The purpose of the utility model is realized through the following technical scheme:

the forming die of the porous hard alloy product is characterized in that: the punching die comprises a female die, an upper punch, a lower punch, a central core rod and a plurality of peripheral core rods, wherein the upper punch, the lower punch, the central core rod and the plurality of peripheral core rods are arranged in the female die;

the lower punch is of a cylindrical table structure, the center of the lower punch is provided with a center through hole for the center core rod to pass through, and the lower punch is provided with a plurality of peripheral through holes for the peripheral core rods to pass through along the circumferential direction by taking the central axis as the center;

the lower punch and the upper punch are opposite and matched with the female die, the central core rod can penetrate through the central through hole of the lower punch and the central through hole of the upper punch, and the peripheral core rod can penetrate through the peripheral through holes of the lower punch and the peripheral through holes of the upper punch.

Further, in the forming die for the porous hard alloy product, the bottom of the lower punch is provided with an inner sunken groove for placing the sharp-nosed pliers, and the bottom end of the peripheral core bar is provided with a jaw for clamping the sharp-nosed pliers.

Further, in the above forming die for a porous cemented carbide article, the upper punch and the female die are fitted with a clearance fit.

Further, in the above forming die for a porous cemented carbide article, the lower punch and the female die are fitted with a clearance fit.

Further, in the above forming die for a porous cemented carbide product, the material of the upper punch and the lower punch is cemented carbide or tool steel.

Further, in the above mold for molding a porous cemented carbide article, the central core rod and the peripheral core rod are made of cemented carbide or tool steel.

Further, in the mold for molding a porous cemented carbide article, the female mold is made of 45# steel.

Compared with the prior art, the utility model have apparent advantage and beneficial effect, the concrete aspect that embodies is in following:

the combination mode of a female die, an upper punch, a lower punch, a central core rod and a plurality of peripheral core rods is adopted, the lower punch is simple in structure, the die manufacturing process is simpler, and the manufacturing period is shortened; the mould is not easy to damage in the using process, the damage rate of the mould is low, and the production cost is reduced; after the pressing is finished, the demoulding is easier, the problem that the pressed blank is difficult to demould is effectively solved, the rejection rate is reduced, and the product quality is improved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1: a schematic front view of a porous cemented carbide article;

FIG. 2: a schematic top view of a porous cemented carbide article;

FIG. 3: the main section schematic diagram of the die of the utility model;

FIG. 4: the utility model discloses a schematic plan view of a die;

FIG. 5: a main section schematic diagram of the upper punch;

FIG. 6: a schematic top view of the upper punch;

FIG. 7: a main section schematic of the undershoot;

FIG. 8: a schematic top view of an undershoot;

FIG. 9: a schematic front view of a central core rod;

FIG. 10: a schematic front view of a peripheral core rod.

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. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the directional terms and the sequence terms and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

As shown in fig. 2 to 10, the forming mold for a porous cemented carbide product includes a female mold 102, and an upper punch 103, a lower punch 104, a central core bar 105, and a plurality of peripheral core bars 106 disposed therein, where the upper punch 103 is a cylindrical structure, the center is provided with a central through hole for the central core bar 105 to pass through, and the center is provided with a central axis and a plurality of peripheral through holes for the peripheral core bars 106 to pass through along the circumferential direction;

the lower punch 104 is of a cylindrical table structure, the center of the lower punch is provided with a center through hole for the center core rod 105 to pass through, and the center of the lower punch is provided with a plurality of peripheral through holes for the peripheral core rods 106 to pass through along the circumferential direction;

the lower punch 104 is opposite the upper punch 103 and is fitted to the die 102, the central core pin 105 being able to pass through the central through-hole of the lower punch 104 and the central through-hole of the upper punch 103, and the peripheral core pin 106 being able to pass through the peripheral through-holes of the lower punch 104 and the peripheral through-hole of the upper punch 103.

In addition, the bottom of lower punch 104 is provided with an inner sunken groove for placing sharp pliers 107, and the bottom end of peripheral core bar 106 is provided with jaws 108 for gripping the sharp pliers.

In the specific manufacturing process, the upper punch 103 and the female die 102 are in clearance fit. The lower punch 104 engages the female die 102 in a clearance fit. The upper punch 103 and the lower punch 104 are made of cemented carbide or tool steel. The central core rod 105 and the peripheral core rod 106 are made of cemented carbide or tool steel. The female die 102 is made of 45# steel.

The die can be used on a press to produce porous hard alloy product pressed compacts, the cavity of the female die 102 is filled with powder, the upper punch 103 enters the female die 102 from the upper part, the lower punch 104 enters the female die 102 from the lower part, and the central core rod 105 can be inserted into the central through hole of the lower punch 104 from the central through hole of the upper punch 103 or inserted into the central through hole of the upper punch 103 from the central through hole of the lower punch 104; six peripheral core rods 106 can be inserted from the peripheral through holes of the upper punch 103 to the peripheral through holes of the lower punch 104, or from the peripheral through holes of the lower punch 104 to the peripheral through holes of the upper punch 103; the porous hard alloy blank with large height-diameter ratio can be pressed.

The bottom of the peripheral core rod is cut into a groove to form a jaw 108, so that the jaw 107 can conveniently clamp the peripheral core rod, and when the die is removed, the jaw 107 is used for clamping the peripheral core rod to be downwards pulled out for die removal. The lower punch is provided with an inner sunken groove, so that the sharp-nose pliers can be conveniently placed.

In summary, the utility model has novel design, adopts a combination mode of a female die, an upper punch, a lower punch, a central core rod and a plurality of peripheral core rods, has simple lower punch structure, simpler die manufacturing process and shortens manufacturing period; the mould is not easy to damage in the using process, the damage rate of the mould is low, and the production cost is reduced; after the pressing is finished, the demoulding is easier, the problem that the pressed blank is difficult to demould is effectively solved, the rejection rate is reduced, and the product quality is improved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.

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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims

1. The forming die of the porous hard alloy product is characterized in that: the punching die comprises a female die (102), an upper punch (103), a lower punch (104), a central core rod (105) and a plurality of peripheral core rods (106), wherein the upper punch (103) is in a cylindrical structure, the center of the upper punch is provided with a central through hole for the central core rod (105) to pass through, the central axis of the upper punch is used as the center, and the peripheral through holes for the peripheral core rods (106) to pass through are formed in the circumferential direction;

the lower punch (104) is of a cylindrical structure, the center of the lower punch is provided with a center through hole for the center core rod (105) to pass through, and the center axis is used as the center of the lower punch and is provided with a plurality of peripheral through holes for the peripheral core rods (106) to pass through along the circumferential direction;

the lower punch (104) is opposite to the upper punch (103) and is matched with the female die (102), the central core rod (105) can penetrate through the central through hole of the lower punch (104) and the central through hole of the upper punch (103), and the peripheral core rod (106) can penetrate through the peripheral through hole of the lower punch (104) and the peripheral through hole of the upper punch (103).

2. The porous cemented carbide article forming mold according to claim 1, wherein: the bottom of the lower punch (104) is provided with an inner sunken groove for placing the sharp-nosed pliers, and the bottom end of the peripheral core bar (106) is provided with a jaw for clamping the sharp-nosed pliers.

3. The porous cemented carbide article forming mold according to claim 1, wherein: the upper punch (103) and the female die (102) are in clearance fit.

4. The porous cemented carbide article forming mold according to claim 1, wherein: the lower punch (104) is matched with the female die (102) in a clearance fit mode.

5. The porous cemented carbide article forming mold according to claim 1, wherein: the upper punch (103) and the lower punch (104) are made of hard alloy or tool steel.

6. The porous cemented carbide article forming mold according to claim 1, wherein: the central core rod (105) and the peripheral core rod (106) are made of hard alloy or tool steel.

7. The porous cemented carbide article forming mold according to claim 1, wherein: the female die (102) is made of 45# steel.