CN218946350U

CN218946350U - Powder metallurgy cycloid rotor shaping die easy to demould

Info

Publication number: CN218946350U
Application number: CN202223370253.7U
Authority: CN
Inventors: 贺利乐; 押海龙; 林育阳; 张鹏; 崔锦旗
Original assignee: Xian University of Architecture and Technology
Current assignee: Xian University of Architecture and Technology
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-05-02
Anticipated expiration: 2032-12-15

Abstract

The utility model discloses a powder metallurgy cycloid rotor shaping die easy to demould, which comprises a top plate and a bottom plate, wherein the top plate is connected with the bottom plate through a supporting column, a spring is arranged at the center of the bottom plate and connected with one end of a core rod, a third hydraulic cylinder is arranged at the center of the top plate, a hydraulic rod of the third hydraulic cylinder is connected with an upper punch, a first hydraulic cylinder is arranged on the periphery of the inner side of the supporting column, the hydraulic rod of the first hydraulic cylinder is connected with a jacket, a hydraulic rod of a second hydraulic cylinder is arranged on the periphery of the inner side of the bottom plate, connected with a lower punch, the lower punch sequentially penetrates through the jacket and a female die, the other end of the core rod penetrates through the lower punch and is connected with a cycloid rotor, and the female die is connected with a die withdrawal hydraulic cylinder. The utility model effectively avoids the part scraps from remaining in the die groove, thereby avoiding the damage to the subsequent shaping part, reducing the friction abrasion of the inner wall of the female die of the steel die, and prolonging the service life of the steel die.

Description

Powder metallurgy cycloid rotor shaping die easy to demould

Technical Field

The utility model belongs to the technical field of powder metallurgy, and particularly relates to a powder metallurgy cycloid rotor shaping die easy to demould.

Background

Powder metallurgy is a process technique for producing metal powders or producing metal materials, composite materials, and various types of products from metal powders or mixtures of metal powders and non-metal powders as raw materials by forming and sintering. The cycloid rotor is a key part on the cycloid oil pump, is simple in design in structural dimension by virtue of the performances of small volume, light weight and few teeth, and meanwhile, has small noise, stable operation, considerable oil transmission and capability of automatically realizing a closed space in the running process, so that the cycloid rotor has wider application in practice. The dimensional accuracy and surface quality of the gerotor rotor are affected by the rebound after powder compaction and by the slight deformation of the sintered surface, so that a shaping step is required subsequently. The traditional shaping die is simple in structure, after shaping is finished, the internal pressure of the die is large, material returning is inconvenient, and the die is easy to damage. There is therefore a need for a powder metallurgy gerotor sizing die that is easy to demold to address the above-described problems.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide the powder metallurgy cycloid rotor shaping die which is easy to demould, and solves the problems that the shaping die in the prior art is simple in structure, high in internal pressure after shaping, inconvenient in material returning and easy to damage the die.

In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme: the utility model provides an easy-demolding powder metallurgy cycloid rotor plastic mould, which comprises a top plate and a bottom plate, the roof passes through the support column with the bottom plate to be connected, bottom plate central point puts and is equipped with the spring, the spring is connected with the one end of plug, the central point put of roof is equipped with the third pneumatic cylinder, the hydraulic stem of third pneumatic cylinder is connected with last drift, the inboard week that the bottom plate is located the support column is equipped with first pneumatic cylinder, the hydraulic stem and the overcoat of first pneumatic cylinder are connected, the inboard week that the bottom plate is located first pneumatic cylinder is equipped with the hydraulic stem and the lower drift of second pneumatic cylinder are connected, outer cover and female die are worn to locate in proper order to the lower drift, the plug other end wears to locate the lower drift and is connected with cycloid rotor, the female die is connected with the withdrawal die pneumatic cylinder.

Preferably, a connecting column is arranged above the female die, and the female die is connected with a die withdrawing hydraulic cylinder through the connecting column.

Preferably, the connecting columns are provided with three connecting columns uniformly distributed above the female die.

Preferably, the female die is of a three-part split structure, and the three parts are the same in structure size.

Preferably, the outer diameter of the female die is identical to the inner diameter of the outer sleeve.

Preferably, the gerotor is engaged with a mandrel.

Preferably, the outer shape of the core rod is identical to the inner shapes of the upper punch and the lower punch.

Preferably, the number of the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder and the die-stripping hydraulic cylinder is 3.

Preferably, the support column, the first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder are arranged in parallel.

Compared with the prior art, the utility model has the following beneficial effects: a powder metallurgy cycloid rotor shaping die easy to demould is characterized in that a first hydraulic cylinder, a second hydraulic cylinder and a third hydraulic cylinder are arranged on a bottom plate, an upper punch and a lower punch are driven to move by the third hydraulic cylinder and the second hydraulic cylinder, the first hydraulic cylinder drives an outer sleeve to move, so that a cycloid rotor can move up and down in a device, a spring is fixedly connected below a core rod, the die is enabled to play a buffering role when the upper punch is in contact with the cycloid rotor during operation, and the upper punch is more stable when in contact with the cycloid rotor, so that shaping effect of the die is improved.

Further, the female die is of a three-part split structure and is connected with the hydraulic rod of the die-withdrawal hydraulic cylinder, and the female die is driven by the hydraulic rod of the die-withdrawal hydraulic cylinder to move outwards, so that part scraps are effectively prevented from remaining in the die groove, damage to subsequent shaping parts is avoided, friction and abrasion of the inner wall of the female die of the steel die are reduced, and the service life of the steel die is prolonged.

Further, the outer diameter of the female die is consistent with the inner diameter of the outer sleeve, so that the female die can be clamped and protected.

Drawings

FIG. 1 is a schematic perspective view of a powder metallurgy cycloid rotor shaping die;

FIG. 2 is a front view of a powder metallurgy cycloid rotor sizing die;

fig. 3 is a schematic diagram of a split structure of the mating part of the powder metallurgy cycloid rotor shaping die.

Wherein: 1. the die comprises a top plate, 2, a support column, 3, a bottom plate, 4, a first hydraulic cylinder, 5, a spring, 6, a second hydraulic cylinder, 7, a core rod, 8, a lower punch, 9, an outer sleeve, 10, a female die, 11, a connecting column, 12, a cycloid rotor, 13, a die-withdrawing hydraulic cylinder, 14, an upper punch, 15 and a third hydraulic cylinder.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The utility model is described in further detail below with reference to the attached drawing figures:

referring to fig. 1, a powder metallurgy shaping mold easy to demould is provided, a top plate 1 and a bottom plate 3, the top plate 1 and the bottom plate 3 are connected through a supporting column 2, a spring 5 is arranged at the central position of the bottom plate 3, the spring 5 is connected with one end of a core rod 7, a third hydraulic cylinder 15 is arranged at the central position of the top plate 1, the hydraulic cylinder of the third hydraulic cylinder 15 is connected with an upper punch 14, a first hydraulic cylinder 4 is arranged on the inner periphery of the bottom plate 3, which is positioned on the supporting column 2, a hydraulic rod of the first hydraulic cylinder 4 is connected with a jacket 9, a second hydraulic cylinder 6 is arranged on the inner periphery of the bottom plate 3, which is positioned on the first hydraulic cylinder 4, referring to fig. 2, a lower punch 8 sequentially penetrates through the jacket 9 and a female die 10, the other end of the core rod 7 penetrates through the lower punch 8 to be connected with a cycloid rotor 12, and the female die 10 is connected with a die withdrawal hydraulic cylinder 13.

Referring to fig. 3, a connecting column 11 is arranged above a female die 10, the female die 10 is connected with a die withdrawal hydraulic cylinder 13 through the connecting column 11, the female die 10 is arranged in a jacket 9, the lower part of the jacket 9 is connected with one end of a core rod 7 through a lower punch 8, and the other end of the core rod 7 is connected with a spring 5.

The working principle of the powder metallurgy shaping die easy to demould is as follows: firstly, sleeving a cycloid rotor 12 on a core rod 7 for positioning, enabling an upper punch 14 to contact the cycloid rotor 12 under the pressure of a hydraulic rod of a third hydraulic cylinder 15, driving the cycloid rotor 12 to enter a female die 10, simultaneously, driving the core rod 7 to move downwards due to extrusion generated inside the core rod 7 and the cycloid rotor 12, and enabling a spring 5 to play a role in buffering, so that a shaping effect is improved, when the cycloid rotor 12 contacts a lower punch 8, the upper punch 14 is stopped moving under the resistance of the lower punch 8, and in the process, the outer circular surface of the cycloid rotor 12 is shaped by an inner hole of the female die 10, and the shape of the inner hole of the cycloid rotor 12 is shaped by a tooth cycloid of the core rod 7; during demolding, the upper punch 14 moves upwards to separate from the female die 10 under the drive of the hydraulic rods of the third hydraulic cylinders 15, the outer sleeve 9 moves downwards to separate from the female die 10 under the drive of the hydraulic rods of the three first hydraulic cylinders 4, at the moment, the female die 10 is exposed outside, the female die 10 simultaneously moves outwards under the drive of the material returning hydraulic cylinders 13 and is divided into three parts, the pressure in the female die 10 is released, the abrasion of the inner wall of the female die 10 is reduced, the core rod 7 is reset under the action of the springs 5, the cycloid rotor 12 is ejected out of the core rod 7 by the lower punch 8 under the action of the hydraulic rods of the three second hydraulic cylinders 6, and demolding is finished.

In summary, according to the powder metallurgy shaping die easy to demould, the spring 5 is arranged at the core rod 7, so that the upper punch 14 is ensured to be more stable when contacting with the cycloid rotor 12, and the shaping effect is improved; the female die 10 in the shaping die is arranged into a three-part split structure, and when the die is removed, the female die 10 moves outwards to be opened, so that part scraps are effectively prevented from remaining in a die groove, damage to subsequent shaping parts is avoided, friction abrasion of the inner wall of the female die of the steel die is reduced, and the service life of the steel die is prolonged.

The above is only for illustrating the technical idea of the present utility model, and the protection scope of the present utility model is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present utility model falls within the protection scope of the claims of the present utility model.

Claims

1. The utility model provides a powder metallurgy cycloid rotor plastic mould of easily drawing of patterns, a serial communication port, including roof (1) and bottom plate (3), roof (1) are connected through support column (2) with bottom plate (3), bottom plate (3) central point puts and is equipped with spring (5), spring (5) are connected with one end of plug (7), the central point put of roof (1) is equipped with third pneumatic cylinder (15), the hydraulic stem of third pneumatic cylinder (15) is connected with last drift (14), bottom plate (3) are located the inboard week of support column (2) and are equipped with first pneumatic cylinder (4), the hydraulic stem of first pneumatic cylinder (4) is connected with overcoat (9), the hydraulic stem that bottom plate (3) are located the inboard week of first pneumatic cylinder (4) is equipped with second pneumatic cylinder (6) is connected with lower drift (8), lower drift (8) wear to locate overcoat (9) and female die (10) in proper order, the plug (7) other end wears to locate lower drift (8) and is connected with cycloid rotor (12), female die (10) are connected with die withdrawal pneumatic cylinder (13).

2. The powder metallurgy cycloidal rotor shaping die easy to demould according to claim 1 is characterized in that a connecting column (11) is arranged above the female die (10), and the female die (10) is connected with a die-withdrawing hydraulic cylinder (13) through the connecting column (11).

3. The powder metallurgy cycloidal rotor shaping die easy to demould according to claim 2, wherein the connecting columns (11) are provided with three connecting columns uniformly distributed above the female die (10).

4. A powder metallurgy cycloidal rotor shaping mould according to claim 1, characterized in that the female mould (10) is of a three-part split construction, the three parts being of the same size.

5. A powder metallurgy cycloidal rotor sizing die easy to demold according to claim 1, characterized in that the outer diameter of the female die (10) is identical to the inner diameter of the outer sleeve (9).

6. A powder metallurgy cycloidal rotor sizing die easy to demold according to claim 1, characterized in that the cycloidal rotor (12) is meshed with a mandrel (7).

7. A powder metallurgy cycloidal rotor sizing die easy to demold according to claim 1, characterized in that the outer shape of the core rod (7) is identical to the inner shape of the upper punch (14) and the lower punch (8).

8. The powder metallurgy cycloid rotor shaping die easy to demould according to claim 1 is characterized in that the number of the first hydraulic cylinder (4), the second hydraulic cylinder (6), the third hydraulic cylinder (15) and the die-stripping hydraulic cylinder (13) is 3.

9. A powder metallurgy cycloidal rotor shaping mould easy to demould according to claim 1, characterized in that the support columns (2), the first hydraulic cylinder (4), the second hydraulic cylinder (6) and the third hydraulic cylinder (15) are arranged in parallel.