CN211803671U

CN211803671U - Distortion piece pipe does not have plain core mould of urea

Info

Publication number: CN211803671U
Application number: CN201921823378.6U
Authority: CN
Inventors: 张本彦; 王兴雷; 王振华; 武丹丹; 曲自荐
Original assignee: Qingdao Npa Industry Co ltd
Current assignee: Qingdao Npa Industry Co ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-10-30
Anticipated expiration: 2029-10-28

Abstract

The utility model relates to a distortion chip pipe preparation field specifically is a distortion chip pipe does not have plain core mould of urine. The die comprises an upper die, a lower die, a left die and a right die, wherein the upper die and the lower die are connected together through lengthened bolts; the left die and the right die are butted together, the left die and the right die are arranged in the upper die and the lower die, and gaps are formed among the left die, the right die, the upper die and the lower die; the left die and the right die are internally provided with twisted piece spaces, and the twisted piece spaces of the left die and the right die are butted to form a twisted spiral space. The utility model discloses a mold design need not utilize the urea core, directly takes out the mould and can obtain inside 180 rotatory muscle, design benefit. The utility model discloses work efficiency is high, and every class can make 50/1 people, maintains 50/1 people, has improved quality and technology yield.

Description

Distortion piece pipe does not have plain core mould of urea

Technical Field

The utility model relates to a distortion chip pipe preparation field specifically is a distortion chip pipe does not have plain core mould of urine.

Background

The twisted sheet tube is an important part used in an ethylene cracking radiant tube row of a petrochemical device, oil can be stirred through the twisted sheet tube, so that the oil cracking reaction is more sufficient, the yield is higher, and the structural diagram of the twisted sheet tube is shown in an attached drawing 1. At present, the traditional twisted sheet pipe needs to be manufactured by using a urea core to form a twisted spiral space with 180-degree rotation inside, the urea core is placed into a mold to be injected with wax, the urea core is integrally placed into a water tank to be dissolved after the wax is solidified, and a cavity formed by the urea core is utilized to prepare a twisted sheet pipe wax mold.

However, the above manufacturing process has the following disadvantages: the process is complicated, urea is required to be dissolved firstly to prepare the urea core, then wax is injected, and finally the urea core is also required to be placed into a water tank to be dissolved. Moreover, the working efficiency is low, only 20 pieces/1 person can be manufactured and 20 pieces/1 person can be trimmed each time. Secondly, the cost is higher, the cost of the industrial urea is increased, the requirement on the quality of the urea core is high, and the yield is not up to 100%. Finally, the dissolved industrial urea pollutes the environment.

Disclosure of Invention

The technical task of the utility model is not enough to prior art, provides the no urea core mould of distortion piece pipe, need not utilize the urea core, directly takes out the mould and can obtain inside 180 rotatory muscle, and is rational in infrastructure, satisfies prior art's requirement.

The utility model provides a technical scheme that its technical problem adopted is: the mould for the twisted piece tube without the urea core comprises an upper mould, a lower mould, a left mould and a right mould, wherein the upper mould is connected together through a lengthened bolt; the left die and the right die are butted together, the left die and the right die are arranged in the upper die and the lower die, and gaps are formed among the left die, the right die, the upper die and the lower die; the upper ends of the left die and the right die are fixed on the left side and the right side in the upper die through two lengthening bolts, the lower ends of the left die and the right die are fixed on the left side and the right side in the lower die through two lengthening bolts, the cross sections of the left die and the right die are in a shape like a Chinese character 'tu', twisting piece spaces are arranged in the left die and the right die, and the twisting piece spaces of the left die and the right die are in butt joint to form a twisting spiral space.

Further, left side mould and right mould shape symmetry, left side mould includes link and protruding end, the link diameter is greater than the diameter of protruding end, the link is fixed on last mould and bed die through the extension bolt that sets up, the inside of protruding end has set up the distortion piece space.

Furthermore, cavities are arranged in the upper die and the lower die, and the left die and the right die are arranged in the cavities.

Furthermore, the upper die, the lower die, the left die and the right die are all made of hard high-temperature-resistant materials.

Further, the twist degree of the twisted spiral space is 180 °.

The utility model discloses a mold design need not utilize the urea core, directly takes out the mould and can obtain inside 180 rotatory muscle, design benefit. The utility model discloses work efficiency is high, and every class can make 50/1 people, maintains 50/1 people, has improved quality and technology yield. The utility model discloses do not produce any pollution to the environment, structure scientific and reasonable, design benefit have greatly promoted the technical update in distortion piece pipe field, are a big progress in this field.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic view of the twisted piece tube of the present invention;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a schematic sectional view taken along line a-a in fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the following embodiments.

Example 1

Fig. 1 is a three-dimensional perspective view of the twisted piece tube. As shown in fig. 2-3, the mould for the distortion sheet tube without the urea core comprises an upper mould 1, a lower mould 2, a left mould 3 and a right mould 4, wherein the upper mould is connected together through an elongated bolt 5, and the elongated bolt 5 is a hexagon screw.

Specifically, the method comprises the following steps: go up

mould

1, 2 shape symmetries of bed die,

left mould

3 and 4 shape symmetries of right mould, left mould 3, right mould 4 butt joint are in the same place, left mould 3, right mould 4 all are equipped with the clearance with last mould 1, bed die 2, are convenient for distort the preparation of sheet pipe. The upper die 1 and the lower die 2 are both internally provided with a cavity a, the left die 3 and the right die 4 are installed in the cavity a, and the left die 3 and the right die 4 occupy the cavity a to form a cylindrical cavity.

The connection of the above-mentioned mould is as follows:

the left and right ends of the upper die 1 are connected with the left die 3 and the right die 4, the upper ends of the left die 3 and the right die 4 are fixed on the left and right sides of the upper die through two lengthening bolts, the lower ends of the left die 3 and the right die 4 are fixed on the left and right sides of the lower die through two lengthening bolts, and the cross sections of the left die 3 and the right die 4 are in a shape of a Chinese character 'tu'. Taking the left mold 3 as an example, the left mold 3 integrally comprises a connecting end 31 and a protruding end 32, the diameter of the connecting end 31 is larger than that of the protruding end 32, and the connecting end 31 is fixed on the upper mold 1 and the lower mold 2 through four lengthened bolts. A twisted piece space b is provided inside the protruding end 32. The twisted sheet spaces of the left die 3 and the right die 4 are butted to form a twisted spiral space, and the twist degree of the twisted spiral space is 180 degrees.

Furthermore, the upper end of the connecting end 31 is fixed on the upper die 1 by two elongated bolts, the lower end of the connecting end 31 is fixed on the lower die 2 by two elongated bolts, and the upper die 1, the lower die 2, the left die 3 and the right die 4 in this embodiment are all made of stainless steel.

This embodiment is used: the lower die 2 is placed on a panel, the left die 3 and the right die 4 are assembled and placed in a cavity a of the lower die 2, finally the upper die 1 is installed, the left die 3 and the right die 4 are fastened with the upper die 1 and the lower die 2 through fastening hexagon screws, and the whole set of dies are placed in a wax injection machine to be injected with wax liquid for molding. After the wax liquid is solidified, firstly, the fastening hexagon screw is dismounted by using an electric wrench, the left die 3 and the right die 4 are respectively rotated and screwed out, the upper die 1 is moved, the wax die is taken out from the cavity of the lower die 2, the urea core is not required, and the design is ingenious.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. Distortion piece pipe does not have plain core mould of urea, its characterized in that: the die comprises an upper die, a lower die, a left die and a right die, wherein the upper die, the lower die, the left die and the right die are connected together through lengthened bolts; the left die and the right die are butted together, the left die and the right die are arranged in the upper die and the lower die, and gaps are formed among the left die, the right die, the upper die and the lower die; the upper ends of the left die and the right die are fixed on the left side and the right side in the upper die through two lengthening bolts, the lower ends of the left die and the right die are fixed on the left side and the right side in the lower die through two lengthening bolts, the cross sections of the left die and the right die are in a shape like a Chinese character 'tu', twisting piece spaces are arranged in the left die and the right die, and the twisting piece spaces of the left die and the right die are in butt joint to form a twisting spiral space.

2. The twisted piece tube urea-free core mold of claim 1, wherein: the left side mould and the right side mould shape symmetry, left side mould includes link and protruding end, the link diameter is greater than the diameter of protruding end, the link is fixed on last mould and bed die through the extension bolt that sets up, the inside of protruding end has set up the distortion piece space.

3. The twisted piece tube urea-free core mold of claim 1, wherein: the upper die and the lower die are both provided with cavities, and the left die and the right die are arranged in the cavities.

4. The twisted piece tube urea-free core mold of claim 2, wherein: the upper die, the lower die, the left die and the right die are all made of hard high-temperature-resistant materials.

5. The twisted piece tube urea-free core mold of claim 1, wherein: the twist of the twisted helical space is 180 °.