CN219561315U

CN219561315U - Variable pitch screw casting die

Info

Publication number: CN219561315U
Application number: CN202320328623.6U
Authority: CN
Inventors: 林乐忠; 林振东
Original assignee: Weihai Witwin Vacuum Science & Technology Co ltd
Current assignee: Weihai Witwin Vacuum Science & Technology Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-08-22
Anticipated expiration: 2033-02-22

Abstract

The utility model provides a variable pitch screw casting die which comprises a first die, wherein a second pin is fixedly connected to the inner side wall of the first die, a second limiting hole and a first limiting hole are respectively formed in two sides of a connecting shaft, the second pin is movably connected with the inside of the second limiting hole, a first pin is movably connected with the inside of the first limiting hole, and the first die and the second die are both composed of a plurality of tooth shapes. According to the utility model, the first die, the connecting shaft and the second die are arranged, the first die and the second die are connected with the connecting shaft, the first pin and the second pin are connected with the second limiting hole and the first limiting hole in the connecting shaft in an inserting manner, the screw tooth type parts on the split dies are separated from the connecting shaft, each tooth type is used as an independent movable block, after a specific position is determined, each tooth type is positioned through the pin, and each tooth type is taken out as an independent part when the modeling is convenient, so that convenience of the device is improved.

Description

Variable pitch screw casting die

Technical Field

The utility model belongs to the technical field of casting molds, and particularly relates to a variable-pitch screw casting mold.

Background

The screw manufacturing can be obtained through cutting a round billet, or can be obtained through casting a screw blank with machining allowance, and then cutting, after cast iron screws are cast and molded, a large number of subsequent machining time can be saved, the labor production efficiency is improved, the casting model of the equal-pitch screw is relatively simple, only the screw model is needed to be split from the middle, but the method is not applicable to the variable-pitch screw model, and the casting is needed to be performed by using a variable-pitch screw casting die.

Because the screw pitches on the same screw are inconsistent, when the screw model rotates by a certain angle, the displacement of the place with large screw pitch and the place with small screw pitch is different, so that the screw cannot rotate or sand mould is piled up and collapsed, and the molding cannot be finished, and therefore, a variable-screw-pitch screw casting mold is needed.

Disclosure of Invention

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a variable pitch screw rod casting mould, including first mould, the inside wall fixedly connected with second pin of first mould, the inside wall swing joint of first mould has the connecting axle, second spacing hole and first spacing hole have been seted up respectively to the both sides of connecting axle, the second connecting hole has been seted up to the inside of first mould, and the second pin is located the inside of second connecting hole, the inside swing joint in second pin and the spacing hole of second, the inside swing joint in first spacing hole has first pin, and the one end fixedly connected with second mould that the connecting axle was kept away from to first pin, first mould and second mould are constituteed by a plurality of tooth shapes.

Optionally, a first connecting hole is formed in the second die, and the first pin is fixedly connected with the inner portion of the first connecting hole.

Optionally, the connecting shaft is divided into two parts and distributed in bilateral symmetry.

Optionally, 5 second spacing holes on the left half side of the connecting shaft are provided, 4 first spacing holes on the right half side of the connecting shaft are provided, and the second spacing holes and the first spacing holes are all distributed transversely.

Optionally, the surface swing joint of connecting axle has first loose piece, the side surface fixedly connected with spliced pole of first loose piece.

Optionally, the surface swing joint of connecting axle has the second loose piece, the spacing groove has been seted up to the inside of second loose piece, and the spliced pole is pegged graft with spacing inslot portion.

The utility model has the following beneficial effects:

compared with the prior art, through setting up first mould, connecting axle and second mould, utilize first mould and second mould to be connected with the connecting axle, peg graft with the inside second spacing hole of connecting axle and first spacing hole through first pin and second pin, the screw rod tooth type part and the connecting axle separation on the mould that will split, every tooth type is as solitary loose piece, through the pin location after confirming specific position, take out when taking out when every tooth type is as independent part convenience molding, be favorable to hoisting device's convenience.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a first view of a schematic overall structure of the present utility model;

FIG. 2 is a schematic view of the whole structure of the present utility model at a second view angle;

FIG. 3 is a cross-sectional view of the internal structure of a second loose piece of the present utility model;

FIG. 4 is an enlarged view of FIG. 3A in accordance with the present utility model;

FIG. 5 is an exploded view of the present utility model at a first perspective;

fig. 6 is an exploded view of the second view of the present utility model.

The symbols in the drawings illustrate:

1. a first mold; 2. a second mold; 3. a connecting shaft; 4. a first connection hole; 5. a second connection hole; 6. a first loose piece; 7. a connecting column; 8. a second loose piece; 9. a limit groove; 10. a first limiting hole; 11. a first pin; 12. a second limiting hole; 13. and a second pin.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1-6, the utility model provides a variable pitch screw casting mold: including first mould 1, the inside wall fixedly connected with second pin 13 of first mould 1, the inside wall swing joint of first mould 1 has connecting axle 3, second spacing hole 12 and first spacing hole 10 have been seted up respectively to the both sides of connecting axle 3, second connecting hole 5 has been seted up to the inside of first mould 1, and second pin 13 is located the inside of second connecting hole 5, the inside swing joint of second pin 13 and second spacing hole 12, the inside swing joint of first spacing hole 10 has first pin 11, and the one end fixedly connected with second mould 2 of connecting axle 3 is kept away from to first pin 11, and first mould 1 and second mould 2 are constituteed by a plurality of tooth forms. The first die 1 and the second die 2 are connected with the connecting shaft 3, the first pin 11 and the second pin 13 are inserted into the second limiting hole 12 and the first limiting hole 10 in the connecting shaft 3, the screw tooth type parts on the split dies are separated from the connecting shaft 3, each tooth type is used as an independent movable block, after the specific position is determined, the pin is used for positioning, and each tooth type is taken out as an independent part for convenient modeling, so that convenience of the lifting device is facilitated.

The inside of the second die 2 is provided with a first connecting hole 4, and a first pin 11 is fixedly connected with the inside of the first connecting hole 4. The connection of the second mould 2 with the connecting shaft 2 is facilitated by means of the first pins 11.

The connecting shaft 3 is divided into two parts and is distributed in bilateral symmetry. The connecting shaft 3 is divided into a left part and a right part, and the two parts are connected together so as to be convenient to be connected with the first die 1 and the second die 2 through the second limiting hole 12 and the first limiting hole 10.

5 second limiting holes 12 are formed in the left half side of the connecting shaft 3, 4 first limiting holes 10 are formed in the right half side of the connecting shaft 3, and the second limiting holes 12 and the first limiting holes 10 are distributed transversely.

The outer surface of the connecting shaft 3 is movably connected with a first movable block 6, and the side surface of the first movable block 6 is fixedly connected with a connecting column 7. The first and second flaps 6 and 8 are part of the second mould 2 and the first mould 1, respectively.

The outer surface of the connecting shaft 3 is movably connected with a second movable block 8, a limiting groove 9 is formed in the second movable block 8, and the second connecting column 7 is inserted into the limiting groove 9.

Working principle: when the screw bolt type lifting device is used, the first die 1 and the second die 2 are connected with the connecting shaft 3, the first pin 11 and the second pin 13 are connected with the second limiting hole 12 and the first limiting hole 10 in the connecting shaft 3 in an inserting mode, the screw bolt tooth type parts on the split dies are separated from the connecting shaft 3, each tooth type is used as an independent movable block, after a specific position is determined, each tooth type is used as an independent part, the screw bolt type lifting device is convenient to take out, convenience of the lifting device is improved, the shaft and the movable blocks are positioned by the pins according to the size of screw bolt, a complete screw bolt half model is formed, and a complete casting model of a variable-pitch screw bolt is formed by the two half models.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. Variable pitch screw casting mould, including first mould (1), its characterized in that: the inside wall fixedly connected with second pin (13) of first mould (1), the inside wall swing joint of first mould (1) has connecting axle (3), second spacing hole (12) and first spacing hole (10) have been seted up respectively to the both sides of connecting axle (3), second connecting hole (5) have been seted up to the inside of first mould (1), and second pin (13) are located the inside of second connecting hole (5), the inside swing joint of second pin (13) and second spacing hole (12), the inside swing joint of first spacing hole (10) has first pin (11), and the one end fixedly connected with second mould (2) of connecting axle (3) are kept away from to first pin (11), first mould (1) and second mould (2) are constituteed by a plurality of tooth shapes.

2. A variable pitch screw casting mold as defined in claim 1, wherein: the second die (2) is internally provided with a first connecting hole (4), and the first pin (11) is fixedly connected with the inside of the first connecting hole (4).

3. A variable pitch screw casting mold as defined in claim 1, wherein: the connecting shaft (3) is divided into two parts and is distributed in bilateral symmetry.

4. A variable pitch screw casting mold according to claim 3, wherein: 5 second limiting holes (12) are formed in the left half side of the connecting shaft (3), 4 first limiting holes (10) are formed in the right half side of the connecting shaft (3), and the second limiting holes (12) and the first limiting holes (10) are distributed transversely.

5. A variable pitch screw casting mold as defined in claim 1, wherein: the outer surface of the connecting shaft (3) is movably connected with a first movable block (6), and the side surface of the first movable block (6) is fixedly connected with a connecting column (7).

6. A variable pitch screw casting mold as defined in claim 5 wherein: the outer surface swing joint of connecting axle (3) has second loose piece (8), spacing groove (9) have been seted up to the inside of second loose piece (8), and inside grafting of first spliced pole (7) and spacing groove (9).