阅读说明：本技术 一种具有复合内胆的保温容器及其制造方法 (Heat-insulating container with composite liner and manufacturing method thereof ) 是由 胡伟震 于 2021-08-23 设计创作，主要内容包括：本发明涉及一种具有复合内胆的保温容器及其制造方法。该保温容器包括不锈钢外壳、杯底,杯底焊接于所述不锈钢外壳的底部,还包括复合内胆,复合内胆由具有钛内层、钢外层的两层复合板材制得,不锈钢外壳的口部与所述复合内胆的口部焊合,不锈钢外壳与所述复合内胆之间形成真空层；复合内胆是由位于上方的复合内胆上部和复合内胆下部构成；复合内胆下部具有一体形成的内胆筒体和内胆底；复合内胆上部具有一体形成内胆口部和锥筒状的肩部；肩部下端的尺寸和形状与内胆筒体上端的尺寸和形状吻合,并且所述肩部下端与内胆筒体上端之间通过其不锈钢部分进行焊接。本发明产品内胆的焊接部位隐蔽,使用者无法看到,且其制造工艺简单,降低了生产成本。(The invention relates to a heat-insulating container with a composite liner and a manufacturing method thereof. The heat preservation container comprises a stainless steel shell, a cup bottom and a composite inner container, wherein the cup bottom is welded at the bottom of the stainless steel shell, the composite inner container is made of two layers of composite plates with a titanium inner layer and a steel outer layer, the mouth part of the stainless steel shell is welded with the mouth part of the composite inner container, and a vacuum layer is formed between the stainless steel shell and the composite inner container; the composite liner is composed of an upper part of the composite liner and a lower part of the composite liner which are positioned above; the lower part of the composite inner container is provided with an inner container cylinder body and an inner container bottom which are integrally formed; the upper part of the composite liner is provided with a shoulder part which integrally forms a liner opening part and a cone shape; the size and the shape of the lower end of the shoulder part are matched with those of the upper end of the liner cylinder body, and the lower end of the shoulder part is welded with the upper end of the liner cylinder body through a stainless steel part of the shoulder part. The welding part of the inner container of the product is hidden and can not be seen by a user, the manufacturing process is simple, and the production cost is reduced.)

1. A heat preservation container with a composite inner container comprises a stainless steel shell, a cup bottom and the composite inner container, wherein the cup bottom is welded at the bottom of the stainless steel shell; the method is characterized in that: the composite liner is composed of an upper part of the composite liner and a lower part of the composite liner which are positioned above; the lower part of the composite inner container is provided with an inner container cylinder body and an inner container bottom which are integrally formed; the upper part of the composite liner is provided with a liner opening part and a conical shoulder part which are integrally formed; the size and the shape of the lower end of the shoulder part are matched with those of the upper end of the liner cylinder body, and the lower end of the shoulder part is welded with the upper end of the liner cylinder body through a stainless steel part of the shoulder part.

2. The heat-insulating container with the composite liner as claimed in claim 1, wherein: the inner side of the opening part at the upper part of the composite inner container is provided with threads.

3. The heat-insulating container with the composite liner as claimed in claim 1, wherein: and a water blocking rib is arranged on the inner side of the upper part of the composite liner and between the mouth part and the conical shoulder part.

4. The heat-insulating container with the composite liner as claimed in claim 1, wherein: the inner container bottom is provided with a groove which is used for avoiding the solder bulge on the inner side of the cup bottom.

5. A method for manufacturing a heat preservation container with a composite liner is characterized in that: the method is used for manufacturing the heat preservation container as claimed in claim 1, 2, 3 or 4, and the processing steps of the composite liner of the heat preservation container comprise the following steps:

A. respectively manufacturing the upper part of the composite inner container and the lower part of the composite inner container by adopting a drawing process and two layers of composite plates with a titanium inner layer and a steel outer layer;

B. the lower end of the shoulder part at the upper part of the composite inner container is welded with the upper end of the inner container barrel at the lower part of the composite inner container through the stainless steel part of the composite inner container, and the composite inner container is formed after welding.

6. The manufacturing method of the heat preservation container with the composite liner according to claim 5, is characterized in that: the forming process of the two-layer composite board of the titanium inner layer and the steel outer layer comprises the following steps:

the stainless steel material and the titanium material with the thickness ratio of 3:2 are compounded together under the high-temperature and vacuum states, and then are subjected to hot-pressing compounding and extrusion to form the composite board.

7. The manufacturing method of the heat preservation container with the composite liner according to claim 5 is characterized in that: and the welding in the step B is laser welding or argon arc welding.

8. The manufacturing method of the heat preservation container with the composite liner according to claim 5, is characterized in that: after the step B, the method also comprises

C1, performing expansion processing on the mouth part of the upper part of the composite liner;

c2, rolling between the mouth and the shoulder of the upper part of the composite liner to form a water blocking rib;

c3, rolling the inner side of the mouth part at the upper part of the composite liner to form threads, and forming the composite liner.

9. The manufacturing method of the heat preservation container with the composite liner according to claim 8 is characterized in that: after the step C3, the method further comprises

D1, welding the mouth of the stainless steel shell and the mouth of the composite inner container;

d2, welding the cup bottom to the bottom of the stainless steel shell;

d3, vacuumizing the gap between the stainless steel outer shell and the composite inner container and forming a vacuum layer.

10. The manufacturing method of the heat preservation container with the composite liner according to claim 9, is characterized in that: the step D3 is specifically:

the inner container bottom is provided with a groove which is used for avoiding the solder bulge on the inner side of the cup bottom;

a through hole with the thickness of 0.5-1.2mm is arranged at the solder bump at the inner side of the cup bottom;

during vacuum pumping, the solder is melted at high temperature and vacuum pumping operation is carried out through the through hole;

after the vacuum pumping is finished, the molten solder seals the through hole to form a vacuum layer between the stainless steel shell and the composite liner.

Technical Field

The invention relates to a heat-insulating container structure, in particular to a heat-insulating container with a composite liner and a manufacturing method thereof.

Background

The vacuum cup is used as a common living article and can be used for preserving heat and storing water or other liquid, the existing vacuum cup is a container which is usually made of ceramic or stainless steel and a vacuum layer, a heat preservation cover is arranged at the top of the container, the vacuum cup is tightly sealed, and the vacuum layer can play a role in delaying heat dissipation to achieve the effect of heat preservation. The inner bag of current thermos cup adopts stainless steel, has the heavy metal to appear the phenomenon, uses for a long time, can influence the taste of drink, leads to the drink establishment easily, and the drink also can corrode the stainless steel gradually and lead to its inner bag damaged, influences the life-span of thermos cup.

In view of the above circumstances, various vacuum cups made of titanium materials have been developed. Such as: the Chinese patent application publication (application publication No. CN 113001124A) discloses a method for manufacturing a vacuum cup with a composite liner. This thermos cup includes stainless steel shell, bottom of cup, the bottom of cup weld in stainless steel shell's bottom still includes compound inner bag, compound inner bag is made by having titanium inlayer, the outer two-layer composite board of steel, stainless steel shell's oral area with the oral area seam of compound inner bag, stainless steel shell with form the vacuum layer between the compound inner bag, its preparation technology includes following step:

q1: taking two layers of composite plates with a titanium inner layer and a steel outer layer, and cutting the composite plates into round pieces.

Q2: cleaning the wafer, drying, then placing the wafer in a vacuum furnace for annealing, raising the temperature of the vacuum furnace to 600-750 ℃ within 15-30 min, preserving the heat for 30-180 min, cooling the vacuum furnace to room temperature by adopting a furnace cooling or argon protection cooling mode, and taking out the wafer; and then placing the wafer in a continuous tunnel type oxygen-enriched annealing furnace, setting the annealing temperature at 600-650 ℃, preserving the heat for 4-10 min, cooling to room temperature, and taking out the wafer.

Q3: and then placing the annealed wafer in a leveling machine, and performing fine leveling treatment along the rolling direction of the wafer and perpendicular to the rolling direction.

Q4: and stretching the wafer for 1-6 times to obtain a composite inner container blank.

Q5: and forming the composite liner blank into the composite liner.

Specifically, the step Q5 further includes:

q5-1: flattening and necking the composite liner blank body, and then removing a stub bar at the bottom of the composite liner blank body to form a straight-tube-shaped composite liner barrel body which is communicated up and down;

q5-2: taking the liner bottom, cutting the edges of the titanium upper layer and the titanium inner layer of the composite liner barrel to be 0.2-0.5 mm short, and matching, wherein the titanium upper layer is abutted against the titanium inner layer of the composite liner barrel, and a groove is formed between the bottom of the liner bottom and the bottom of the composite liner barrel and is welded;

q5-3: and after welding, flattening the welding part of the liner bottom and the composite liner barrel to obtain the composite liner.

Q6: and then flattening and spinning the composite liner.

Q7: taking a stainless steel shell, turning the mouth part of the composite liner, matching the mouth part with the stainless steel shell after cutting short, and welding the mouth part of the stainless steel shell and the mouth part of the composite liner twice, wherein the mouth part of the stainless steel shell is welded with the outer steel layer for the first time, and the mouth part of the stainless steel shell is welded with the inner titanium layer for the second time.

Q8: and after the welding is finished, grinding the second welding part to obtain the cup body with a smooth mouth part surface.

Q9: and (3) taking a cup bottom, vacuumizing the cup body obtained after the treatment in the step Q8, welding the cup bottom at the bottom of the stainless steel shell to form a vacuum layer between the stainless steel shell and the composite inner container, and finally performing electrolysis and surface treatment to obtain the vacuum cup with the composite inner container.

The vacuum cup with the composite liner manufactured by the method has the following defects:

1. the welding position of the liner bottom and the composite liner barrel is positioned at the lower end of the composite liner barrel, and the welding position can be seen from the opening part of the heat-insulating container, so that the attractiveness of the product is influenced.

2. When the liner bottom is connected with the composite liner barrel, the edges of the titanium upper layer and the titanium inner layer of the composite liner barrel are required to be shortened by 0.2-0.5 mm, and then the opening is matched, the titanium upper layer is abutted against the titanium inner layer of the composite liner barrel, a groove is formed between the bottom of the liner bottom and the bottom of the composite liner barrel and is welded, the operation is complex, and the manufacturing cost of the liner is increased.

As described above, improvement of the manufacturing method and structure of the conventional heat-insulating container having a titanium/stainless steel composite inner container is desired.

Disclosure of Invention

The invention aims to provide a heat-insulating container with a composite inner container and a manufacturing method thereof, and mainly solves the technical problems that the welding part of the inner container bottom and the inner container barrel body of the existing heat-insulating container with the titanium and stainless steel composite inner container can be seen from the mouth part of the heat-insulating container, and the welding structure and the process are complex.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a heat preservation container with a composite inner container comprises a stainless steel shell, a cup bottom and the composite inner container, wherein the cup bottom is welded at the bottom of the stainless steel shell; the method is characterized in that: the composite liner is composed of an upper part of the composite liner and a lower part of the composite liner which are positioned above; the lower part of the composite inner container is provided with an inner container cylinder body and an inner container bottom which are integrally formed; the upper part of the composite liner is provided with a liner opening part and a conical shoulder part which are integrally formed; the size and the shape of the lower end of the shoulder part are matched with those of the upper end of the liner cylinder body, and the lower end of the shoulder part is welded with the upper end of the liner cylinder body through a stainless steel part of the shoulder part.

The heat preservation container with the composite inner container is characterized in that: the inner side of the opening part at the upper part of the composite inner container is provided with threads.

The heat preservation container with the composite inner container is characterized in that: and a water blocking rib is arranged on the inner side of the upper part of the composite liner and between the mouth part and the conical shoulder part.

The heat preservation container with the composite inner container is characterized in that: the inner container bottom is provided with a groove which is used for avoiding the solder bulge on the inner side of the cup bottom.

A method for manufacturing a heat preservation container with a composite liner is characterized in that: the method is used for manufacturing the heat preservation container, and the processing steps of the composite liner of the heat preservation container comprise:

A. respectively manufacturing the upper part of the composite inner container and the lower part of the composite inner container by adopting a drawing process and two layers of composite plates with a titanium inner layer and a steel outer layer;

B. the lower end of the shoulder part at the upper part of the composite inner container is welded with the upper end of the inner container barrel at the lower part of the composite inner container through the stainless steel part of the composite inner container, and the composite inner container is formed after welding.

The manufacturing method of the heat preservation container with the composite liner is characterized in that: the forming process of the two-layer composite board of the titanium inner layer and the steel outer layer comprises the following steps:

the stainless steel material and the titanium material with the thickness ratio of 3:2 are compounded together under the high-temperature and vacuum states, and then are subjected to hot-pressing compounding and extrusion to form the composite board.

The manufacturing method of the heat preservation container with the composite liner is characterized in that: and the welding in the step B is laser welding or argon arc welding.

The manufacturing method of the heat preservation container with the composite liner is characterized in that: after the step B, the method also comprises

C1, performing expansion processing on the mouth part of the upper part of the composite liner;

c2, rolling between the mouth and the shoulder of the upper part of the composite liner to form a water blocking rib;

c3, rolling the inner side of the mouth part at the upper part of the composite liner to form threads, and forming the composite liner.

The manufacturing method of the heat preservation container with the composite liner is characterized in that: after the step C3, the method further comprises

D1, welding the mouth of the stainless steel shell and the mouth of the composite inner container;

d2, welding the cup bottom to the bottom of the stainless steel shell;

d3, vacuumizing the gap between the stainless steel outer shell and the composite inner container and forming a vacuum layer.

The manufacturing method of the heat preservation container with the composite liner is characterized in that: the step D3 is specifically:

the inner container bottom is provided with a groove which is used for avoiding the solder bulge on the inner side of the cup bottom;

a through hole with the thickness of 0.5-1.2mm is arranged at the solder bump at the inner side of the cup bottom;

during vacuum pumping, the solder is melted at high temperature and vacuum pumping operation is carried out through the through hole;

after the vacuum pumping is finished, the molten solder seals the through hole to form a vacuum layer between the stainless steel shell and the composite liner.

The invention has the advantages that:

1. compared with the prior art, the welding part of the composite liner of the product is hidden, a user cannot see through the mouth part of the container, the attractiveness of the product is not influenced, and the use experience of the user is not influenced.

2. Compared with the prior art, the manufacturing method of the invention, especially the welding process of the composite liner is relatively simple, and the production cost is reduced.

Drawings

Fig. 1 is a schematic structural view of the heat preservation container with the composite liner.

Fig. 2 is an exploded structural schematic view of the composite liner of the present invention.

Fig. 3 is a schematic view of the connection structure of the composite liner of the present invention.

Fig. 4 is a schematic structural view of the composite liner after the mouth expanding operation in the manufacturing method of the invention.

FIG. 5 is a schematic view of the structure of the composite liner after the water-blocking ribs are rolled in the manufacturing method of the present invention.

Fig. 6 is a schematic view of the structure of the composite liner after the mouth part threads are rolled in the manufacturing method of the invention.

Fig. 7 is a schematic structural view of a product obtained by welding the mouth of the stainless steel shell and the mouth of the composite liner in the manufacturing method of the invention.

Detailed Description

The following detailed description and technical contents of the present invention are described with reference to the drawings, which are provided for reference and illustration purposes only and are not intended to limit the present invention.

Please refer to fig. 1, which is a schematic structural diagram of a thermal insulation container with a composite liner according to the present invention. As shown in the figure: the vacuum cup comprises a stainless steel shell 11 and a cup bottom 12, wherein the cup bottom 12 is welded at the bottom of the stainless steel shell 11, the vacuum cup further comprises a composite inner container, the composite inner container is made of two layers of composite plates with a titanium inner layer and a steel outer layer, the mouth part of the stainless steel shell 11 is welded with the mouth part of the composite inner container, and a vacuum layer 3 is formed between the stainless steel shell 11 and the composite inner container; the composite liner is composed of a composite liner upper part 21 and a composite liner lower part 22 which are positioned above; the lower part 22 of the composite inner container is provided with an inner container cylinder body and an inner container bottom which are integrally formed; the upper part 21 of the composite liner is provided with a shoulder part 211 which integrally forms a liner opening part and a cone cylinder shape; the size and the shape of the lower end of the shoulder part 211 are matched with the size and the shape of the upper end of the liner cylinder body, and the lower end of the shoulder part 211 is welded with the upper end of the liner cylinder body through a stainless steel part of the shoulder part.

In the product of the invention, the inner side of the mouth part of the upper part 21 of the composite liner is provided with a thread 212.

In the product of the invention, a water blocking rib 213 is arranged on the inner side of the upper part 21 of the composite liner and between the mouth and the conical shoulder, and the water blocking rib 213 is used for matching with a sealing element on the cup cover to seal the cup without water leakage.

In the invention, the inner container bottom is provided with a groove 221, and the groove 221 is used for avoiding the solder bulge on the inner side of the cup bottom.

The invention further discloses a manufacturing method of the heat preservation container with the composite liner, which is used for manufacturing the heat preservation container, and the processing steps of the composite liner comprise the following steps:

A. the upper part of the composite inner container and the lower part of the composite inner container are respectively manufactured by a drawing process and two layers of composite plates with a titanium inner layer and a steel outer layer.

B. As shown in fig. 2 and 3, the lower end of the shoulder 211 of the upper part 21 of the composite liner and the upper end of the liner cylinder of the lower part 22 of the composite liner are welded through stainless steel parts thereof, and the composite liner is formed after welding.

In the steps of the method, the forming process of the two-layer composite board of the titanium inner layer and the steel outer layer comprises the following steps:

a stainless steel material 1.8mm thick and a titanium material 1.2mm thick are heated at 1400 ℃ under vacuum (e.g., 10%^-5Vacuum state), then hot-pressing and compounding (the processing temperature of a hot rolling mill is 800 ℃, the flow rate is 2m/min, and the upper and lower pressing wheels are respectively 12 groups), and extruding to form a composite plate with the thickness of 0.3-0.6 mm.

That is, a stainless material and a titanium material having a thickness ratio of 3:2 were vacuum-compounded and hot-pressed to form a composite sheet.

And the welding in the step B is laser welding or argon arc welding.

After the step B, the method also comprises

C1, expanding the mouth of the upper part of the composite liner, as shown in figure 4.

C2, rolling between the mouth and the shoulder of the upper part of the composite liner to form a water-blocking rib, as shown in figure 5.

C3, rolling the inner side of the mouth part at the upper part of the composite liner to form threads, and forming the composite liner, as shown in figure 6.

After the step C3, the method further comprises

D1, welding the mouth of the stainless steel shell and the mouth of the composite liner, as shown in figure 7.

D2, welding the cup bottom to the bottom of the stainless steel shell, as shown in figure 1.

D3, vacuumizing the gap between the stainless steel outer shell and the composite inner container and forming a vacuum layer.

The step D3 is specifically:

the inner container bottom is provided with a groove which is used for avoiding the solder bulge on the inner side of the cup bottom;

a through hole with the thickness of 0.5-1.2mm is arranged at the solder bump at the inner side of the cup bottom;

during vacuum pumping, the solder is melted at high temperature and vacuum pumping operation is carried out through the through hole;

after the vacuum pumping is finished, the molten solder seals the through hole to form a vacuum layer between the stainless steel shell and the composite liner.

Because the groove is arranged on the inner container bottom and the solder bulge on the inner side of the cup bottom is avoided, the distance between the cup bottom and the inner container bottom can be reduced as much as possible, and the capacity of the cup is increased to the maximum extent.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and drawings are included in the scope of the present invention, and it is obvious that the present invention is also included in the claims.