CN214230212U - Three-time injection molding inner and outer double-layer integrated heat preservation lunch box - Google Patents

Abstract

Inside and outside double-deck integral type heat preservation lunch-box of cubic injection moulding, including interior box body and outer box body, the outer wall system of the last mouth of box body has the side lug including, the system has last splice bar and side splice bar on the side lug, the outer wall of box body sets up outer box body including, the end of the last mouth of outer box body cooperatees with last splice bar lower extreme, the last mouth of outer box body inner wall cooperatees with side splice bar outer wall, vacuole formation between outer box body and the interior box body, outer box body goes up mouthful outer wall system and has outer recess, set up the oral area and bordure in the upper end of inner box body and outer box body, the oral area bordure including boss and side boss, upward the boss system has the package groove down, go up the package groove and cooperate with last splice bar outer wall, side boss inner wall system has the endocyst groove, the endocyst groove cooperatees with the side splice bar outer wall, side boss is located endocyst groove below system has the lower calorie of muscle, lower calorie of muscle head card is gone into in the outer recess.

Description

Three-time injection molding inner and outer double-layer integrated heat preservation lunch box

Technical Field

The utility model relates to a heat preservation lunch-box especially relates to inside and outside double-deck integral type heat preservation lunch-box of cubic injection moulding.

Background

The traditional heat-preservation lunch box, the traditional fresh-keeping box and the like are generally of single-layer structures, and have poor heat-preservation capability and fast heat dissipation. Therefore, the invention provides a double-layer heat-preservation lunch box and a double-layer fresh-keeping box, which comprise an inner container and an outer sleeve, wherein a cavity is formed between the inner container and the outer sleeve, and the cavity can reduce the heat dissipation and improve the heat preservation effect. However, the existing double-layer heat-preservation lunch box is formed by two-time injection molding, namely, firstly, a first auxiliary mold is adopted to perform injection molding on the inner container, then a second auxiliary mold is adopted to perform injection molding on the outer sleeve, and finally, the lower end of the flanging of the inner container and the upper opening of the outer sleeve are welded and connected in a rotary welding mode.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art, providing the three-time injection molding inner and outer double-layer integrated heat preservation lunch box which has good heat preservation and fresh-keeping performance, is convenient to process and is suitable for processing heat preservation lunch boxes with different shapes.

The utility model discloses inside and outside double-deck integral type heat preservation lunch-box's of cubic injection moulding technical scheme is: including interior box body and outer box body, the outer wall system of the last mouth of box body has the side lug including, the system has last splice bar and side splice bar on the side lug, the outer wall of box body sets up outer box body including, the last mouth of box body tip cooperatees with last splice bar lower extreme, the last mouth of box body inner wall cooperatees with side splice bar outer wall, vacuole formation between outer box body and the interior box body, outer box body goes up mouth of box wall system has outer recess, including the upper end of box body and outer box body set up the oral area of borduring, the oral area bordure including last boss and side boss, upward the boss has the package groove down, go up package groove and last splice bar outer wall and cooperate, side boss inner wall system has the endocyst groove, the endocyst groove cooperatees with side splice bar outer wall, side boss is located endocyst groove below system has down the card muscle, lower calorie of muscle head card is gone into in the outer recess.

The utility model discloses an inside and outside double-deck integral type heat preservation lunch-box of cubic injection moulding, adopt first pair of injection mould to carry out injection moulding with plastics inner box body earlier, the system of suitable for reading of inner box body has the side lug, system has last splice bar and side splice bar on the side lug, reuse second pair of injection mould carries out injection moulding with plastics outer box body, it has the outer recess to make at the outer wall of suitable for reading of outer box body, then overlap outer box body to the inner box body outside, wherein the upper mouth inner wall of outer box body and the side lug outer wall chucking of inner box body are sealed tight fit, the up end of outer box body and the side splice bar lower extreme sealing contact of inner box body, make interior outer box, form a cavity between the outer box body, at this moment will make up interior, outer box body puts into third pair of injection mould as the inserts together, carry out third time injection moulding, including, the upper end cladding one deck oral area of outer box body bordures, oral area bordures, system has upper boss and side lug, go up the boss and make down and have the package groove, go up the package groove and wrap the splice bar, side boss inner wall system has the endocyst groove, the endocyst groove wraps the side splice bar, the below system of side boss has lower calorie of muscle, the outer recess cooperation of lower calorie of muscle and outer box body upper shed outer wall, thereby it is interior to make, the last oral area of outer box body obtains sealed package tight fit (the oral area of moulding plastics is bordured and is interior promptly, outer box body links to each other integratively), need not spin welding and connects, it is convenient to make, the assembly is more reliable, be applicable to the heat preservation lunch-box of processing different shapes, inside and outside bilayer adds hollow structure, the effectual heat preservation performance who improves.

The utility model discloses inside and outside double-deck integral type heat preservation lunch-box of cubic injection moulding, the oral area bordure and be located side splice bar lower extreme system and have protruding muscle. The convex ribs are arranged, and the structural strength of the mouth part edge covering is improved.

Drawings

FIG. 1 is a schematic structural view of an inside and outside double-layer integrated heat-preservation lunch box formed by three-time injection molding;

fig. 2 is a partially enlarged schematic view of a portion a of fig. 1.

Detailed Description

The utility model relates to an internal and external double-layer integrated heat preservation lunch box formed by three-time injection molding, as shown in figure 1-figure 2, comprising an internal box body 1 and an external box body 2, wherein the external wall of the upper opening of the internal box body is provided with a side lug 11, the side lug is provided with an upper connecting rib 12 and a side connecting rib 13, the external wall of the internal box body 1 is provided with the external box body 2, the end part of the upper opening of the external box body is matched with the lower end of the upper connecting rib 12, the internal wall of the upper opening of the external box body is matched with the external wall of the side lug 11, a cavity 3 is formed between the external box body 2 and the internal box body 1, the external wall of the upper opening of the external box body 2 is provided with an external groove 21, the upper end of the internal box body 1 and the external box body 2 is provided with an opening edge-covering 4, the opening edge-covering comprises an upper lug boss 41 and a side lug boss 42, the lower end of the upper boss is provided with an upper wrapping groove 43, the outer wall of the upper wrapping groove is matched with the upper connecting rib 12, the inner wall of the side lug boss, the side boss is provided with an internal groove 44, the inner wall of the side lug boss, the inner groove is matched with the inner groove, the inner groove 13, the inner wall of the inner groove, the side boss 42 is provided with a lower clamping rib 45 below the inner bag groove 44, and the head of the lower clamping rib is clamped in the outer groove 21. Firstly, a first auxiliary injection mould is adopted to carry out injection moulding on a plastic inner box body 1, a side convex block 11 is arranged at the upper opening of the inner box body, an upper connecting rib 12 and a side connecting rib 13 are arranged on the side convex block, then a second auxiliary injection mould is used to carry out injection moulding on a plastic outer box body 2, an outer groove 21 is arranged at the outer wall of the upper opening of the outer box body, then the outer box body is sleeved outside the inner box body, wherein the inner wall of the upper opening of the outer box body is tightly clamped and tightly matched with the outer wall of the side convex block 11 of the inner box body, the upper end surface of the outer box body is in sealing contact with the lower end of the side connecting rib 13 of the inner box body, so that a cavity 3 is formed between the inner box body and the outer box body, at the moment, the combined inner box body and the outer box body are taken as inserts to be put into a third auxiliary injection mould to carry out injection moulding for the third time, a layer of mouth part edge 4 is coated at the upper end of the inner box body, an upper lug boss 41 and a side boss 42 are arranged at the mouth part edge, an upper boss 43 is arranged at the lower part, go up the package groove and wrap tie-bar 12, side boss inner wall system has endocyst groove 44, the endocyst groove wraps side tie-bar 13, the below system of side boss has lower calorie of muscle 45, lower calorie of muscle cooperates with outer box 2 outer groove 21 of last mouthful outer wall, thereby in the messenger, the last oral area of outer box obtains sealed package tight fit (the oral area of moulding plastics is bordured 4 promptly and is interior, outer box links to each other integratively), need not rotatory welded connection, the manufacture is convenient, the assembly is more reliable, be applicable to the heat preservation lunch-box of processing different shapes, inside and outside bilayer adds hollow structure, the effectual heat preservation performance who improves the heat preservation lunch-box. The mouth part edge-covering 4 is provided with a convex rib 46 at the lower end of the side connecting rib 13. The convex ribs are arranged, and the structural strength of the mouth part edge-covering 4 is improved.

Claims (2)

1. Inside and outside double-deck integral type heat preservation lunch-box of cubic injection moulding, its characterized in that: comprises an inner box body (1) and an outer box body (2), wherein the outer wall of the upper opening of the inner box body is provided with a side convex block (11), the side convex block is provided with an upper connecting rib (12) and a side connecting rib (13), the outer wall of the inner box body (1) is provided with the outer box body (2), the end part of the upper opening of the outer box body is matched with the lower end of the upper connecting rib (12), the inner wall of the upper opening of the outer box body is matched with the outer wall of the side convex block (11), a cavity (3) is formed between the outer box body (2) and the inner box body (1), the outer wall of the upper opening of the outer box body (2) is provided with an outer groove (21), the upper ends of the inner box body (1) and the outer box body (2) are provided with an opening edge covering (4), the opening edge covering comprises an upper lug boss (41) and a side lug (42), an upper covering groove (43) is formed under the upper lug boss, the upper covering groove is matched with the outer wall of the upper connecting rib (12), the inner wall of the side lug boss is provided with a groove (44), and the inner covering groove is matched with the outer wall of the side connecting rib (13), the side boss (42) is positioned below the inner bag groove (44) and is provided with a lower clamping rib (45), and the head part of the lower clamping rib is clamped in the outer groove (21).

2. The three-time injection molding inner-outer double-layer integrated heat preservation lunch box as claimed in claim 1, wherein: the mouth part edge covering (4) is provided with a convex rib (46) at the lower end of the side connecting rib (13).

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