Disclosure of Invention
The present invention is directed to a door hinge for a drum washing machine to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: a door hinge for a drum washing machine comprises a base, wherein one side of the base is provided with a hook, and the other side of the base is provided with an installation hook for installing a washing machine door; the door is connected with the washing machine door through the mounting hook and then connected with a connecting hole on the washing machine through the hook, so that the washing machine door and the washing machine can be preliminarily positioned before being mounted; after the fastening piece penetrates through the round hole formed in the base, the washing machine door is accurately assembled on the washing machine; the base with the couple and the installation hook all adopts the sheet metal component to assemble and forms.
As a preferred technical scheme of the invention: the base is punched into an arc shape by adopting punching equipment.
As a preferred technical scheme of the invention: the quantity of couple is two, and two the couple symmetry set up on the base.
As a preferred technical scheme of the invention: the installation hook is also provided with a cylindrical shaft, and the cylindrical shaft is connected with the washing machine door so as to enable the washing machine door to rotate on the installation hook.
As a preferred technical scheme of the invention: the mounting hook penetrates through the base and then is connected with the fixing part.
As a preferred technical scheme of the invention: the fixing part and the mounting hook are of an integral structure, and the fixing part is punched by punching equipment so that the mounting hook is fixed on the base.
The invention also discloses a manufacturing method of the door hinge for the drum washing machine, which comprises the following steps: s1: stamping equipment by adopting punch equipment to form the base;
s2: the mounting hook is formed by upsetting and pressing by using cold upsetting machine equipment;
s3: the hook is punched and formed by adopting punch equipment;
s4: the mounting hook is connected with the base in a punching riveting or rotating riveting mode;
s5: the hook is spot-welded on the other surface of the base;
s6: performing quality inspection on the externally molded door hinge;
s7: and carrying out electrophoresis or powder spraying external processing on the finished product so as to form a protective layer on the surface of the finished product.
By adopting the technical scheme, the invention has the beneficial effects that: 1. the door is connected with the washing machine door through the mounting hook and then connected with the connecting hole on the washing machine through the hook, so that the washing machine door and the washing machine can be preliminarily positioned before being mounted, and the washing machine door can be accurately assembled on the washing machine after the fastener penetrates through the round hole;
2. because base and couple and installation hook all adopt the sheet metal component to make, then reduce the device's cost of manufacture, then strengthen the device's structural strength, solved current die casting easy rupture or yielding problem.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "upper surface", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; 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.
Referring to fig. 1, an embodiment of the present invention: a door hinge for a drum washing machine comprises a base 1, wherein one side of the base 1 is provided with a hook 2, and the other side of the base 1 is provided with a mounting hook 3 for mounting a washing machine door; the door is connected with the washing machine door through the mounting hook 3 and is connected with a connecting hole on the washing machine through the hook 2, so that the washing machine door and the washing machine can be preliminarily positioned before being mounted; after a fastening piece penetrates through a round hole 5 formed in the base 1, the washing machine door is accurately assembled on the washing machine; the base 1 with couple 2 and installation hook 3 all adopts the sheet metal component to make.
Based on the structure, the door is connected with the washing machine door through the mounting hook 3 and then connected with the connecting hole on the washing machine through the hook 2, so that the door and the washing machine before mounting have the temporary auxiliary hanging and positioning functions, and the door can be accurately assembled on the washing machine after a fastener passes through the round hole 5; simultaneously because base 1 and couple 2 and installation hook 3 all adopt the sheet metal component to assemble and form, then reduce the device's cost of manufacture, secondly strengthen the device's structural strength, solved current die casting easy rupture or yielding problem.
Because base 1 adopts stamping equipment to make it circular-arc, consequently make base 2 with can laminate more on the washing machine door of circular structure, reduce the clearance, optimize the structure of product.
Furthermore, the quantity of couple 2 is two, and two 2 symmetry settings of couple be in on the base 1, consequently make the washing machine door obtain more effective location before the assembly, and then guarantee the efficient assembly of washing machine door.
Furthermore, the installation hook 3 is further provided with a cylindrical shaft 4, and the cylindrical shaft 4 is connected with the washing machine door so as to enable the washing machine door to rotate on the installation hook 3, so that when the washing machine door is assembled with the base 1, the efficient and reliable assembly of the washing machine door and the base 1 is ensured, and the functions of positioning and fixing the washing machine door and facilitating the rotation of the washing machine door are achieved.
On the basis of above-mentioned scheme, because installation hook 3 passes be connected with the fixed part 6 that is equipped with behind the base 1, consequently make installation hook 3 also can adopt the sheet metal component to make, and then guarantee that installation hook 3 also has the characteristic of sheet metal component.
Furthermore, the fixing part 6 and the mounting hook 3 are of an integral structure, and the fixing part 6 is stamped by a stamping device to fix the mounting hook 3 on the base 1, so that the mounting hook 3 and the base 1 are not only simple to assemble and fix, but also more reliably fixed together after assembly; in addition, the manufacturing cost of the mounting hook 3 and the base 1 and the processing flow of the mounting hook and the base are reduced.
In order to further reduce the processing cost of the door hinge and simplify the manufacturing process of the door hinge, the invention also discloses a manufacturing method of the door hinge, which specifically comprises the following steps:
s1: stamping equipment by adopting punch equipment to form the base 1; wherein the stamping pressure is 60 tons;
s2: the mounting hook 3 is formed by upsetting through a cold upsetting machine, and the formed mounting hook 3 is bent through a bending device; wherein the pressure of the bending equipment is 60 tons;
s3: the hook 2 is punched and formed by adopting punch equipment; wherein the stamping pressure is 10 tons;
s4: the mounting hook 3 is connected with the base 1 in a punching riveting or rotating riveting mode; wherein the stamping pressure is 60 tons;
s5: the hook 2 is spot-welded on the other surface of the base 1;
s6: performing quality inspection on the externally molded door hinge;
s7: the finished product is subjected to electrophoresis or powder spraying external processing, and the surface of the product is sprayed with black or white environment-friendly powdery chemical substances, or is subjected to erosion coating treatment in an electrophoresis tank to form a protective layer on the surface, thereby playing the roles of protection and beauty.
By the mode, all parts of the device can be independently produced in batches, so that the production cost of the door hinge is reduced; simultaneously with installation hook 3 and couple 2 adopt the mode of assembling to assemble on base 1, consequently make the simple and convenient of assembling of hinge, will install hook 3 compaction on base 1 through stamping equipment simultaneously, will get in touch 2 welding on base 1, make the overall structure of hinge stable again.
Based on the method, the base 1, the hook 2 and the mounting hook 3 are produced in batch; then the hook 2 and the mounting hook 3 are assembled on the base 1; and then the hook 2 is fixed on the base 1 by welding, and finally the mounting hook 3 is stamped on the base 1, so that the production of the door hinge can be operated in a production line manner, and the production cost of the device is further reduced.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.