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CN-121987048-A - Welding structure for special-shaped heat-insulation cup mouth

CN121987048ACN 121987048 ACN121987048 ACN 121987048ACN-121987048-A

Abstract

The invention discloses a special-shaped thermos cup mouth welding structure, which comprises an inner container and a shell sleeved on the outer side of the inner container, wherein the upper end of the shell is provided with a first turnover part turned inwards, the first turnover part comprises a first vertical side formed by downward turning, the upper end of the inner container is provided with a second vertical side, the first vertical side surrounds the outer side of the second vertical side, the inner peripheral surface of the first vertical side is abutted against the outer side wall of the second vertical side, and the first vertical side and the second vertical side are welded and fixed.

Inventors

  • CHEN XINGYU

Assignees

  • 武义泰祺硕杯业有限公司

Dates

Publication Date
20260508
Application Date
20241105

Claims (10)

  1. 1. The utility model provides a special-shaped thermos cup mouth portion welded structure, includes the inner bag and overlaps in the shell in the inner bag outside, its characterized in that, the upper end of shell is equipped with the first folding portion of turning over to inboard, first folding portion is including the first vertical limit that forms of turning over down, the upper end of inner bag is equipped with the second vertical limit, first vertical limit encircles the outside at the second vertical limit, and the inner peripheral surface of first vertical limit is leaned on the lateral wall of second vertical limit, and both welded fastening.
  2. 2. The welding structure of the mouth of the special-shaped thermos cup according to claim 1, wherein the upper end of the inner container is provided with a second turnover part which is turned outwards, and the second turnover part comprises a second vertical edge which is formed by downward turning.
  3. 3. The special-shaped thermos cup mouth welding structure according to claim 1, wherein a side edge of the upper end of the inner container which is vertical is used as the second vertical edge.
  4. 4. The special-shaped thermos cup mouth welding structure according to claim 1, wherein a first cavity is formed between the first folding portion and the inner wall of the outer shell, the first folding portion comprises a first folded edge which is connected to the upper end of the outer shell and folded inwards, and the first vertical edge is connected to the inner end of the first folded edge.
  5. 5. The welding structure of the mouth portion of the special-shaped thermos cup according to claim 1 or 4, wherein the downward folded portion of the first vertical side is arc-shaped.
  6. 6. The welding structure of the mouth of the special-shaped thermos cup according to claim 1, wherein a second cavity is formed between the second turnover part and the outer wall of the inner container, the second turnover part comprises a second folded edge which is connected with the upper end of the inner container and folded outwards, the second vertical edge is connected to the outer end of the second folded edge, and the second folded edge is an arc edge.
  7. 7. The welding structure of the mouth portion of the special-shaped thermos cup according to claim 2 or 6, wherein the downward folded portion of the second vertical side is arc-shaped.
  8. 8. The welding structure of the mouth of the special-shaped thermos cup according to claim 1, wherein the upper end of the outer shell is arc-shaped, and the first turnover part is connected to the arc-shaped part of the upper end of the outer shell.
  9. 9. The welding structure for the mouth portion of the shaped thermos cup according to claim 1, wherein the upper end of the outer shell is inclined inward, and the first turnover part is connected to the inclined portion of the upper end of the outer shell.
  10. 10. A shaped thermos cup mouth welding structure according to claim 3, wherein the inner container comprises a straight cylindrical main body part, a flaring part arranged at the upper end of the main body part, the flaring part comprises a sloping side connected with the outer flaring of the upper end of the main body part, and a vertical straight side connected with the upper end of the sloping side, and the vertical straight side is used as a second vertical side which is abutted against the first vertical side.

Description

Welding structure for special-shaped heat-insulation cup mouth Technical Field The invention relates to a water cup, in particular to a welding structure for an opening of a special-shaped thermos cup. Background The existing thermos cup is a drinking water container made of stainless steel and a vacuum layer, and comprises a cup body formed by combining a shell and an inner container, wherein a cover is arranged at the top of the cup body, the cup body is tightly sealed, and cold and heat insulation is realized by reducing heat transmission. The vacuum cup is divided into a round cup and a special-shaped vacuum cup according to the shape of the cup body, the round cup body is in a straight cylinder shape, the appearance difference is not quite old, and the special-shaped vacuum cup forms the cup body with attractive appearance and novel shape by changing the shape of the outer wall of the cup body. The cup body of the thermos cup is formed by welding the upper end of the cup mouth of the shell and the upper end of the cup mouth of the liner. For example, patent CN213282447U discloses a thermos cup with a titanium steel composite liner, which comprises a liner and a stainless steel shell, wherein the stainless steel shell is sleeved on the outer side of the liner, the edge wall at the cup opening at the upper end of the liner is a straight edge, the edge wall at the cup opening at the upper end of the stainless steel shell is also a straight edge, and the straight edge at the upper end of the stainless steel shell is close to the straight edge at the upper end of the liner and is fixed by welding. The problem of vacuum cup rim welding is that 1, an inner container and a shell are closely attached together through a vertical side wall at the upper end for welding and fixing, the thickness of the vacuum cup rim is equal to the sum of the thickness of the side wall of the inner container and the thickness of the side wall of the shell, so that the formed vacuum cup rim is too thin and is easy to cut a lip, 2, the upper end side wall of the shell is arranged into a vertical straight edge due to welding, the appearance is relatively unaesthetic, if the upper end of the shell is arranged into a special-shaped (such as an arc or a bevel edge), the problem of machining precision cannot be avoided in a flat-mouth procedure, the size of the rim can be damaged, the size of the mouth of each vacuum cup shell is inconsistent due to the fact that the height difference of the side wall at the upper end of the shell is a circular arc or the bevel edge, the mouth of the shell is too loose due to large diameter deviation of the mouth of the shell, the vacuum cup rim is too tight to fit with the inner container, and the welding reject ratio is increased, and batch production cannot be carried out. Disclosure of Invention Based on the problems that the liner and the shell are welded and fixed by being attached together through the vertical side wall at the upper end, the mouth part of the formed thermos cup is thinner, and the like, the invention provides the special-shaped thermos cup mouth part welding structure. The technical scheme includes that the special-shaped thermos cup mouth welding structure comprises an inner container and a shell sleeved on the outer side of the inner container, wherein the upper end of the shell is provided with a first turnover part turned inwards, the first turnover part comprises a first vertical edge formed by downward folding, the upper end of the inner container is provided with a second vertical edge, the first vertical edge surrounds the outer side of the second vertical edge, the inner peripheral surface of the first vertical edge is attached to the outer side wall of the second vertical edge, and the first vertical edge and the second vertical edge are welded and fixed. The further preferable technical scheme of the invention is that the upper end of the inner container is provided with a second folding part which is folded outwards, and the second folding part comprises a second vertical edge which is folded downwards. According to a further preferable technical scheme, the vertical side edge of the upper end of the inner container is used as the second vertical edge. The further preferable technical scheme of the invention is that a first cavity is formed between the first turnover part and the inner wall of the shell, the first turnover part comprises a first folded edge which is connected with the upper end of the shell and folded inwards, and the first vertical edge is connected with the inner end of the first folded edge. The further preferable technical scheme of the invention is that the downward folding part of the first vertical side is arc-shaped. The further preferable technical scheme of the invention is that a second cavity is formed between the second turnover part and the outer wall of the inner container, the second turnover part comprises a second folded edge which is