CN112190094A

CN112190094A - Double-layer metal cup cover and manufacturing process thereof

Info

Publication number: CN112190094A
Application number: CN202011063404.7A
Authority: CN
Inventors: 徐明昂; 胡杨海; 俞志锦; 胡寿仁; 徐有利
Original assignee: Zhejiang Haers Vacuum Containers Co Ltd
Current assignee: Zhejiang Haers Vacuum Containers Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-01-08

Abstract

The invention discloses a double-layer metal cup cover and a manufacturing process thereof, wherein the double-layer metal cup cover comprises an outer cover made of stainless steel materials and an inner cover made of stainless steel materials or titanium metal materials, the lower end of the outer cover is pressed and contacted with the outer end of a turned edge, a gap is arranged between the inner side wall of the outer cover and the outer side wall of the inner cover, a heat insulation space is arranged between the top surface of the outer cover and the top of the inner cover, and the contact part of the outer cover and the inner cover is connected by welding; the manufacturing process comprises the steps of adopting the existing stretching, stamping and shaping processes, and machining and forming the outer cover and the inner cover; the preheating temperature is 80-130 ℃; and welding the contact part of the outer cover and the inner cover. The invention well solves the technical problem of welding when a gap is left between the metal inner cover and the metal outer cover, and has the advantages of simple structure, environmental protection, sanitation and good heat insulation performance.

Description

Double-layer metal cup cover and manufacturing process thereof

Technical Field

The invention relates to a cup cover of a vacuum cup, in particular to a double-layer metal cup cover and a manufacturing process thereof.

Background

Traditional thermos cup bowl cover generally adopts the plastic material, perhaps covers one deck stainless steel material on the surface of plastics lid, however, the plastic material is ageing easily, also breaks easily, and environmental protection inadequately. For example, the patent number ZL201721112272.6 discloses a heat-preservation cup cover, which comprises a cover body, wherein a stainless steel lining layer is arranged on the lower surface of the cover body, and a sealing ring is arranged on the peripheral edge of the stainless steel lining layer; a stainless steel outer layer is arranged on the peripheral cylindrical surface of the cover body; the edge part of the upper surface of the cover body is provided with a groove, the groove cuts the peripheral edge part of the upper surface of the cover body into a first convex part and a second convex part, and the upper end part of the stainless steel outer layer wraps the first convex part and then bends the first convex part in the groove; and the upper surface and/or the lower surface of the cover body is/are provided with a heat insulation layer. Although the patent technology solves the secondary pollution of plastics to drinking liquid, the use of plastics can pollute the environment, the environmental protection problem is not solved fundamentally, and the metal texture of the stainless steel is only on the lower surface and the side surface, which is not complete,

the new double-layer metal cup cover overcomes the technical problems, but because the welding between the metal inner cover and the metal outer cover has a difficult problem, the metal inner cover and the metal outer cover can be connected only by adopting a non-welding mode, so that the firmness and the attractiveness of the metal inner cover can be reduced, and the structure is more complex. The welding problem is mainly caused by the fact that the interlayer space of the inner cover and the outer cover of the cup cover is small, the temperature is high in the welding process, the air in the interlayer is heated by heating, the formed pressure cannot be digested in a small space, and in the welding tail section, namely the sealing section, a large amount of interlayer air can quickly overflow outwards, so that welding failure and other defects are caused. The utility model patent No. zl201520252154.x discloses "a double-deck stainless steel bottle lid", and it includes enclosing cover and inner cup made of stainless steel material the lateral wall of inner cup on extrude or the punching press has the screw thread, the enclosing cover cup joints in the outside of inner cup and wraps up the screw thread on the lateral wall. In the first scheme, the lower edges of the inner cover and the outer cover are connected by welding, but no gap exists between the inner cover and the outer cover, so that the heat insulation effect of the cup cover is greatly reduced; a gap is reserved between the inner cover and the outer cover of the second scheme, but due to the welding problem, the lower edge of the inner cover and the lower edge of the outer cover can only be fixedly connected by wrapping the outer cover through the turned edge of the inner cover, but the firmness of the turned edge is reduced, the touch feeling is not good, and the attractiveness is reduced.

Disclosure of Invention

The invention aims to provide a double-layer metal cup cover which is simple in structure, does not use plastic materials, is very environment-friendly and sanitary, and has complete metal texture; the heat preservation and insulation performance of the cup cover is improved.

The invention also aims to provide a manufacturing process of the double-layer metal cup cover, which well solves the technical problem of welding when a gap is left between the metal inner cover and the metal outer cover.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a double-deck metal bowl cover, includes the enclosing cover made by stainless steel material and the inner cup of making by stainless steel material or titanium metal material, is equipped with the screw thread on the lateral wall of inner cup, and the lower extreme of inner cup is equipped with the edge of turning over outward, and the lower extreme pressure of enclosing cover touches in the outer end of turning over the edge, is equipped with the clearance between the inside wall of enclosing cover and the lateral wall of inner cup, is equipped with thermal-insulated space between the top surface of enclosing cover and the top of inner cup, and the enclosing cover passes through.

The top of the inner cover is provided with a downward concave cavity.

A process for manufacturing a double-layered metal cup cover as claimed in

claim

1 or 2, comprising the steps of:

the method comprises the following steps: the outer cover is manufactured and formed by adopting stainless steel materials through the existing stretching, stamping and shaping processes, the inner cover is manufactured and formed by adopting stainless steel materials or titanium metal materials through the existing stretching, stamping and shaping processes, and threads are formed on the side wall of the inner cover through extrusion or stamping;

step two: pressing the lower end of the outer cover to the outer end of the turning edge;

step three: preheating the assembled outer cover and inner cover, wherein the preheating temperature is 80-130 ℃;

step four: and welding the contact part of the outer cover and the inner cover to form the double-layer cup cover.

The preheating mode is high-frequency heating, the heating temperature is 100 ℃, the assembled outer cover and the assembled inner cover are placed on a working table surface in a heating ring of high-frequency heating equipment, and laser welding or argon arc welding is carried out while heating.

Compared with the prior art, the double-layer metal cup cover has the beneficial effects that: the cup cover has simple structure, does not use plastic materials, is very environment-friendly and sanitary, and has complete metal texture; the arrangement of the heat insulation space improves the heat insulation performance. The setting of cavity has not only further promoted heat preservation heat-proof quality, has improved the mechanical strength of inner cup top surface moreover, when forming the negative pressure in the thermos cup, inner cup top surface non-deformable.

Compared with the prior art, the manufacturing process of the double-layer metal cup cover has the beneficial effects that: the space between the inner cover and the outer cover is enlarged due to the arrangement of the heat insulation space, particularly the arrangement of the concave cavity, the temperature rise of air in the interlayer is digested to a certain degree in the welding process, particularly, the pressure difference between the interlayer air and the outside air in the welding process can be reduced through preheating, the overflow amount and the overflow speed of the interlayer air are reduced, and the welding quality is further ensured. The preheating adopts high-frequency heating, the heating speed is high, and the efficiency is high; the welding adopts laser welding or argon arc welding, can reduce the heat that the welding position produced, and the quality and the qualification rate of welding are higher. The laser welding method or the argon arc welding method which is carried out while keeping the lower preheating temperature is a breakthrough success based on long-term and deep research and repeated failure, and well solves the technical problem of welding when a gap is left between the metal inner cover and the metal outer cover.

Drawings

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

FIG. 2 is a schematic diagram of the disassembled structure of FIG. 1;

fig. 3 is a schematic view of the double-layer metal cup cover of the present invention placed in a heating ring for heating.

Detailed Description

In order to make the technical solution of the present invention clearer, the present invention will be described in detail below with reference to fig. 1 to 3. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

The invention relates to a double-layer metal cup cover which comprises an outer cover 1 made of stainless steel materials and an inner cover 2 made of stainless steel materials or titanium materials, wherein threads 2-1 are arranged on the side wall of the inner cover 2, and the lower end of the inner cover 2 is provided with a turned edge 2-2 which is folded outwards, and the double-layer metal cup cover is characterized in that: the lower extreme pressure of enclosing cover 1 touches in the outer end of turning over along 2-2, is equipped with the clearance between the inside wall of enclosing cover 1 and the lateral wall of inner cup 2, is equipped with thermal-insulated space 12 between the top surface of enclosing cover 1 and the top of inner cup 2, and the contact department of enclosing cover 1 and inner cup 2 passes through welded connection. Preferably, the top of the inner cover 2 of the double-layer metal cup cover is provided with a downward concave cavity 2-3.

The manufacturing process of the double-layer metal cup cover comprises the following steps:

the method comprises the following steps: the outer cover 1 is manufactured and formed by adopting stainless steel materials through the existing stretching, stamping and shaping processes, the inner cover 2 is manufactured and formed by adopting stainless steel materials or titanium materials through the existing stretching, stamping and shaping processes, and the threads 2-1 are formed on the side wall of the inner cover 2 through extrusion or stamping;

step two: the lower end of the outer cover 1 is pressed and contacted with the outer end of the turning edge 2-2;

step three: preheating the assembled outer cover 1 and the assembled inner cover 2 at the preheating temperature of 80-130 ℃;

step four: and welding the contact part of the outer cover 1 and the inner cover 2 to form the double-layer cup cover.

Preferably, the preheating mode of the manufacturing process of the double-layer metal cup cover is high-frequency heating, the heating temperature is preferably 100 ℃, the assembled outer cover 1 and the assembled inner cover 2 are placed on a working table surface in a heating ring 3 of high-frequency heating equipment, and laser welding or argon arc welding is carried out while heating.

When the outer cover 1 and the inner cover 2 are made of titanium metal materials, or when the outer cover 1 is made of stainless steel materials and the inner cover 2 is made of titanium metal materials, argon protection is needed around welding points when the outer cover 1 and the inner cover 2 are welded.

Claims

1. The utility model provides a double-deck metal bowl cover, includes enclosing cover (1) made by stainless steel material and inner cup (2) made by stainless steel material or titanium metal material, is equipped with screw thread (2-1) on the lateral wall of inner cup (2), and the lower extreme of inner cup (2) is equipped with the edge (2-2) of turning over outward, its characterized in that: the lower extreme pressure of enclosing cover (1) is touched in the outer end of turning over along (2-2), is equipped with the clearance between the inside wall of enclosing cover (1) and the lateral wall of inner cup (2), is equipped with thermal-insulated space (12) between the top surface of enclosing cover (1) and the top of inner cup (2), and the contact department of enclosing cover (1) and inner cup (2) passes through welded connection.

2. The double-layer metal cup cover of claim 1, wherein: the top of the inner cover (2) is provided with a downward concave cavity (2-3).

3. A process for manufacturing a double-layer metal cup cover as claimed in claim 1 or 2, characterized by comprising the steps of:

the method comprises the following steps: the outer cover (1) is manufactured and formed by adopting stainless steel materials through the existing stretching, stamping and shaping processes, the inner cover (2) is manufactured and formed by adopting stainless steel materials or titanium metal materials through the existing stretching, stamping and shaping processes, and threads (2-1) are formed on the side wall of the inner cover (2) in an extruding or stamping mode;

step two: the lower end of the outer cover (1) is pressed and contacted with the outer end of the turning edge (2-2);

step three: preheating the assembled outer cover (1) and inner cover (2) at the temperature of 80-130 ℃;

step four: and welding the contact part of the outer cover (1) and the inner cover (2) to form the double-layer cup cover.

4. The manufacturing process of the double-layer metal cup cover of claim 3, characterized in that: the preheating mode is high-frequency heating, the heating temperature is 100 ℃, the assembled outer cover (1) and the assembled inner cover (2) are placed on a working table surface in a heating ring (3) of high-frequency heating equipment, and laser welding or argon arc welding is carried out while heating.