CN216606694U

CN216606694U - Mould convenient to long handle differential gear is unloaded

Info

Publication number: CN216606694U
Application number: CN202122590227.4U
Authority: CN
Inventors: 彭勇; 郭飞; 陈立奇; 朱胜
Original assignee: Jiangsu Liken Technology Co ltd
Current assignee: Jiangsu Liken Technology Co ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-05-27
Anticipated expiration: 2031-10-26

Abstract

The utility model discloses a die convenient for discharging a long-handle differential gear, which comprises an upper die and a lower die which are arranged up and down; the upper die comprises an upper die pressure block, an upper punch and a forming upper female die, the forming upper female die is fixed on the bottom end face of the upper die pressure block, and the upper punch is movably arranged in a cavity of the forming upper female die in a penetrating manner; the upper punch is upwards provided with a counter bore, the counter bore is provided with an elastic piece, and the elastic piece is connected between the upper die pressure block and the upper punch; the lower die comprises a lower die pressure block, a lower punch and a forming lower female die; the lower punch penetrates through the lower die pressure block and the forming lower female die in sequence. The elastic piece structure is added, so that the die can move relative to the workpiece, the workpiece is convenient to unload, and the workpiece is not easy to damage.

Description

Mould convenient to long handle differential gear is unloaded

Technical Field

The utility model belongs to the technical field of differential gear machining, and particularly relates to a die convenient for discharging a long-handle differential gear.

Background

The differential gear is an important force transmission component in the car. The mechanical properties of the material directly determine the safety and stability of the car. In the traditional method, a differential gear is mainly machined by a Gleason gear shaper, and because the method is cutting machining, metal fibers are cut off, so that the strength of the gear is reduced, and the service life of the gear is shortened. In recent years, the production is gradually carried out by adopting a cold extrusion method, and a die in cold extrusion is one of the key factors determining the cost of the product.

When a long-handle differential gear product is encountered, in order to realize that the product is easy to separate from a die during discharging, the conventional method is to increase a draft angle during die design. The method has certain limitation, and when the area of the handle part of the product in the die cavity is far larger than that of the head part, the risk that the product cannot be smoothly demoulded is greatly improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a die convenient for discharging a long-handle differential gear so as to solve the problem that the conventional die structure is difficult to discharge a long-handle differential gear product.

In order to achieve the above purpose, the solution of the utility model is:

a die convenient for discharging a long-handle differential gear comprises an upper die and a lower die which are arranged up and down;

the upper die comprises an upper die pressure block, an upper punch and a forming upper female die, the forming upper female die is fixed on the bottom end surface of the upper die pressure block, and the upper punch is movably arranged in a cavity of the forming upper female die in a penetrating manner; the upper punch is upwards provided with a counter bore, the counter bore is provided with an elastic piece, and the elastic piece is connected between the upper die pressure block and the upper punch;

the lower die comprises a lower die pressure block, a lower punch and a forming lower female die; the lower punch penetrates through the lower die pressure block and the forming lower female die in sequence.

Specifically, an upper die prestress outer ring is sleeved outside the forming upper female die.

Specifically, the upper female die and the upper die prestress outer ring are in interference fit.

Specifically, an upper molding cavity and an accommodating cavity which are communicated are formed in the upper molding female die, the upper molding cavity and the accommodating cavity penetrate through the upper end and the lower end of the upper molding female die, and the width of the accommodating cavity is located above the upper molding cavity; the upper punch is arranged in the upper forming female die in a penetrating mode and comprises a limiting part and a punching part which are integrally formed, the width of the limiting part is located at the upper end of the punching part, the limiting part is movably arranged in a containing cavity of the upper forming female die, the lower end face of the limiting part is clamped and limited on the inner bottom face of the containing cavity, and the counter bore is formed in the upper end face of the limiting part; the punching part of the upper punch penetrates through the upper forming cavity, and the punching part is matched with the upper forming cavity.

Specifically, a lower die prestress outer ring is sleeved outside the lower forming die.

Specifically, the lower die is in interference fit with the lower die prestress outer ring.

Specifically, the pressure block locating ring is sleeved outside the lower die pressure block, and the pressure block locating ring and the lower die pressure block are in interference fit.

Specifically, the elastic member is a telescopic spring.

After the scheme is adopted, the upper punch is movably arranged in the cavity of the upper forming female die, the upper forming female die is fixed with the upper die pressure block, the upper end of the upper punch is provided with the counter bore, the elastic piece is arranged in the counter bore and is connected with the upper die pressure block and the upper punch, the elastic piece is compressed and deformed when a workpiece is formed, after the workpiece is formed, the extrusion force of the upper forming female die and the upper die pressure block is removed, the elastic piece is released and has upward thrust on the upper die pressure block, so that the upper forming female die connected with the upper die pressure block is driven to move upwards, the upper forming female die is separated from the workpiece, and finally the upper forming female die drives the upper punch to move, so that the upper die is completely separated from the workpiece, and the unloading process is completed. The elastic piece structure is added, so that the die can move relative to the workpiece, the workpiece is convenient to unload, and the workpiece is not easy to damage.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the upper mold in the present invention;

FIG. 3 is an enlarged view of A in FIG. 2;

fig. 4 is a schematic structural view of a lower die in the present invention.

In the figure:

1. an upper die; 11. an upper die pressure block;

12. an upper punch; 121. a limiting part; 122. a punching part;

13. forming an upper female die; 131. an upper molding cavity; 132. an accommodating chamber;

14. a counter bore; 15. an elastic member; 16. an upper die prestress outer ring;

2. a lower die;

21. a lower die pressure block; 22. a lower punch; 23. forming a lower female die;

24. a lower die prestress outer ring; 25. a pressure block positioning ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, e.g., as meaning permanently attached, removably attached, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Furthermore, the terms "inside and outside", "above and below", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply specific orientations, and thus, the present invention is not to be construed as being limited.

Referring to fig. 1, the utility model discloses a die for facilitating gear unloading of a long-handled differential, which comprises an upper die 1 and a lower die 2 which are arranged up and down, wherein a blank is placed in the lower die 2, the upper die 1 moves downwards relative to the lower die 2 to extrude the blank to form a workpiece, and then the upper die 1 moves upwards to demould the formed workpiece.

As shown in fig. 2 and 3, the upper die 1 includes an upper die pressure block 11, an upper punch 12 and a forming upper female die 13, the forming upper female die 13 is fixed on the bottom end surface of the upper die pressure block 11, and the upper punch 12 is movably inserted into a cavity of the forming upper female die 13; specifically, an upper molding cavity 131 and an accommodating cavity 132 which are communicated with each other are formed in the upper molding female die 13, the upper molding cavity 131 and the accommodating cavity 132 penetrate through the upper end and the lower end of the upper molding female die 13, the accommodating cavity 132 is located above the upper molding cavity 131 in a wide diameter manner, the upper molding cavity 131 is located at one end close to the lower die 2, and when the upper die 1 moves towards the lower die 2, a blank is extruded into the cavity of the upper molding cavity 131 so as to mold a workpiece; the upper punch 12 is arranged in the upper forming die 13 in a penetrating manner, specifically, the upper punch 12 comprises a limiting part 121 and a punching part 122 which are integrally formed, the breadth of the limiting part 121 is located at the upper end of the punching part 122, the limiting part 121 is movably arranged in an accommodating cavity 132 of the upper forming die 13, and the lower end surface of the limiting part 121 is clamped and limited on the inner bottom surface of the accommodating cavity 132, that is, the limiting part 121 can move in the accommodating cavity 132, but can be clamped and limited on the inner bottom surface of the accommodating cavity 132 and cannot fall into the upper forming cavity 131; the punching portion 122 of the upper punch 12 penetrates through the upper forming cavity 131, the punching portion 122 is adapted to the upper forming cavity 131, and the upper die 13 and the upper punch 12 punch the blank in the lower die 2 downwards together, so that the blank is extruded into the upper forming cavity 131 of the upper die 13 to be formed.

In order to facilitate stripping of the molded blank, the upper punch 12 is provided with a counter bore 14 facing upwards, and specifically, the counter bore 14 is provided on the upper end face of the limiting part 121 of the upper punch 12; the counter bore 14 is provided with an elastic member 15, and the elastic member 15 in this embodiment is a telescopic spring; this elastic component 15 connects upper die pressure piece 11 and upper punch 12, and the work piece shaping back, need carry out the drawing of patterns, die 13 and last die pressure piece 11 remove the extrusion force in the shaping, and elastic component 15 is released to there is an ascending thrust to last die pressure piece 11, and then drives the die 13 rebound in the shaping of being connected with last die pressure piece 11, makes die 13 and work piece separation in the shaping, and last die 13 drives upper punch 12 and removes in the shaping, and then accomplishes and goes up mould 1 and work piece complete separation, accomplishes the process of unloading.

Further, an upper die prestress outer ring 16 is sleeved outside the forming upper female die 13 so as to increase the prestress effect of the upper die 1, improve the bearing capacity of the upper die 1 and prolong the service life of the upper die; the upper female die 13 and the upper die prestress outer ring 1 are in interference fit.

As shown in fig. 4, the lower die 2 includes a lower die pressure block 21, a lower punch 22 and a lower forming die 23; the lower punch 22 sequentially penetrates through the lower die pressure block 21 and the forming lower female die 23, when a workpiece is manufactured, a blank is placed in a cavity of the forming lower female die 23, during forming, the forming upper female die 13 and the upper punch 12 downwards punch the blank in the forming lower female die 23, and the blank is relatively downwards extruded by the upper punch 12 and the lower punch 22 to be formed in the forming upper female die 13 and the forming lower female die 23.

Further, die 23 overcoat is equipped with lower mould prestressing force outer lane 24 under the shaping to increase the prestressing force effect of die 23 under the shaping, improve bearing capacity and the life of die 23 under the shaping, interference fit between die 23 and the lower mould prestressing force outer lane 24 under the shaping.

Further, lower mould pressure piece 21 overcoat is equipped with pressure piece position circle 25, and interference fit between the two, and pressure piece position circle 25 is in order to increase the stability of lower mould pressure piece 21 to lower mould 2 skew influences the work piece shaping effect when preventing the punching press.

The working principle of the utility model is as follows: placing a workpiece blank in a cavity of a forming lower female die 23, enabling a lower punch 22 to abut against the bottom of the workpiece blank, driving a forming upper female die 13 and an upper punch 12 by an upper die pressure block 11 to downwards punch the blank in the forming lower female die 23, enabling the blank to be relatively downwards extruded by the upper punch 12 and the lower punch 22, forming in the forming upper female die 13 and the forming lower female die 23, enabling the lower punch 22 to be relatively pushed by the blank at the moment, moving upwards to extrude a telescopic spring, and enabling the telescopic spring to be in a compressed state when the workpiece is formed; after the workpiece is formed, the extrusion force of the forming upper female die 13 and the upper die pressure block 11 is removed, the expansion spring is released, upward thrust is applied to the upper die pressure block 11, the forming upper female die 13 connected with the upper die pressure block 11 is driven to move upwards, the forming upper female die 13 is separated from the workpiece, finally, the forming upper female die 13 drives the upper punch 12 to move upwards, the upper die 1 is completely separated from the workpiece, and the unloading process is completed.

The above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the technical scope of the present invention, so that the changes and modifications made by the claims and the specification of the present invention should fall within the scope of the present invention.

Claims

1. The utility model provides a mould convenient to long handle differential gear is unloaded which characterized in that: comprises an upper die (1) and a lower die (2) which are arranged up and down;

the upper die (1) comprises an upper die pressure block (11), an upper punch (12) and a forming upper female die (13), wherein the forming upper female die (13) is fixed on the bottom end surface of the upper die pressure block (11), and the upper punch (12) is movably arranged in a cavity of the forming upper female die (13) in a penetrating manner; a counter bore (14) is formed in the upper punch (12) in an upward direction, an elastic piece (15) is arranged in the counter bore (14), and the elastic piece (15) is connected between the upper die pressure block (11) and the upper punch (12);

the lower die (2) comprises a lower die pressure block (21), a lower punch (22) and a lower forming female die (23); the lower punch (22) penetrates through the lower die pressure block (21) and the forming lower female die (23) in sequence.

2. The mold for facilitating unloading of a long handled differential gear according to claim 1, wherein: and an upper die prestress outer ring (16) is sleeved outside the forming upper female die (13).

3. The mold for facilitating unloading of a long handled differential gear according to claim 2, wherein: and the forming upper female die (13) is in interference fit with the upper die prestress outer ring (16).

4. The mold for facilitating unloading of a long handled differential gear according to claim 1, wherein: an upper forming cavity (131) and an accommodating cavity (132) which are communicated are formed in the forming upper female die (13), the upper forming cavity (131) and the accommodating cavity (132) penetrate through the upper end and the lower end of the forming upper female die (13), and the width of the accommodating cavity (132) is positioned above the upper forming cavity (131); the upper punch head (12) penetrates through the upper forming female die (13), the upper punch head (12) comprises a limiting part (121) and a punching part (122) which are integrally formed, the wide diameter of the limiting part (121) is positioned at the upper end of the punching part (122), the limiting part (121) is movably arranged in an accommodating cavity (132) of the upper forming female die (13), the lower end face of the limiting part (121) is clamped and limited on the inner bottom face of the accommodating cavity (132), and the counter bore (14) is formed in the upper end face of the limiting part (121); the punching part (122) of the upper punch (12) penetrates through the upper forming cavity (131), and the punching part (122) is matched with the upper forming cavity (131).

5. The mold for facilitating unloading of a long handled differential gear according to claim 1, wherein: and a lower die prestress outer ring (24) is sleeved outside the forming lower female die (23).

6. The mold for facilitating unloading of a long handled differential gear according to claim 5, wherein: and the lower molding female die (23) is in interference fit with the lower die prestress outer ring (24).

7. The mold for facilitating unloading of a long handled differential gear according to claim 1, wherein: and a pressure block positioning ring (25) is sleeved outside the lower die pressure block (21) and is in interference fit with the lower die pressure block.

8. The mold for facilitating unloading of a long handled differential gear according to claim 1, wherein: the elastic piece (15) is a telescopic spring.