CN102687974B - Cup lid - Google Patents

Abstract

A cup cover, a fixture used for it and its assembly belong to the field of household appliances. Its characteristics are: the inner cover is made of food-grade plastic, and the middle part is a circular platform. There is a circumferential groove on the outer edge of the circular platform. The outer edge of the groove has a convex edge around the circumference. The threads form an oblate plastic inner cover; the outer surface of the inner cover closely fits the stainless steel outer cover. The assembly fixture is: a shrinking fixture, under which there is a positioning fixture; a stainless steel outer cover workpiece is placed in the positioning fixture, a circular stainless steel sheet workpiece is placed in the stainless steel outer cover, and then the shrinking fixture with the big mouth facing upward is inserted. , Insert the plastic cover workpiece with the opening facing up into the shrinking fixture, and place it under the impact pressure head. The positive effect is: the use of other fastening parts such as gussets and glue can be avoided, which not only saves materials and labor hours, but also greatly improves production efficiency and product quality; and solves the problem of long-term existence of cup lids and cup plugs. Complex manual assembly puzzles.

Description

a cup lid

technical field

The utility model belongs to the field of household utensils, and relates to the design and manufacturing technology of cup lids, to be exact, the technology of assembling cup lids mixed with stainless steel and injection molding.

Background technique

Common cup lids are composed of an inner plastic lid and an outer steel lid, usually with a gusset or glue to fasten the two; the gusset has great limitations on the appearance of the lid and is easy to use for a period of time. Loose, and there is a quality risk; but not only the amount of glue used is large, but also the workload of cleaning the cup cover in the rear channel is increased, and the glue is easy to cause the cup cover to be defective, affecting the quality, and there are many assembly processes, high scrap rate, and high cost.

Contents of the invention

The invention provides a cup cover which does not need gussets or glue, has few assembly steps, low cost and good quality, and realizes the fastening combination of the two, and the clamps used therein and its assembly.

The technical scheme adopted in the present invention:

A cup cover, which is composed of a plastic inner cover and a stainless steel outer cover. The plan is: the plastic inner cover is made of grade 800E polypropylene plastic, a food-grade plastic (commonly known as PP plastic), and the middle part is a protrusion. The circular platform, whose diameter is smaller than the inner diameter of the cup mouth of the cup, has a circumferential groove on the outer edge of the round platform, and its width is slightly larger than the thickness of the cup mouth of the cup body. There are threads matching the mouth of the cup to form a complete oblate plastic inner cover; on the outer surface of the oblate plastic inner cover, a stainless steel outer cover is closely attached.

A jig used for a cup cover and its assembly, including a passing jig, the solution is: the passing jig is a necking jig, and a positioning jig made of nylon with positioning intervals and extraction holes is placed under the necking jig; the positioning jig Put the first workpiece of the stainless steel outer cover with the large opening facing upward, put the second workpiece of the circular stainless steel plate whose diameter is larger than the top opening of the stainless steel outer cover into the stainless outer cover, and then put it into the narrowing with the large opening facing upward. In the necking fixture, the plastic inner cover with the insertion opening facing up is the third workpiece, and it is placed under the impact pressure head controlled by the impact force.

The positive effect of the present invention is:

This kind of outer cover made of stainless steel is implemented, and the plastic deformation of the plastic cover is used on the back to realize the interference fit method to embed the cup cover formed by the stainless steel outer cover, which can avoid the use of other fastening parts such as gussets, and do not use Glue not only saves materials but also greatly improves production efficiency and product quality; and solves the long-standing problem of manual assembly of the inner cover and outer cover of the cup cover that has existed in this industry for a long time.

Description of drawings

Figure 1 is a schematic cross-sectional view of the structural relationship between the stainless steel outer cover and the plastic inner cover.

Figure 2 is a schematic cross-sectional view of the relationship between the fixture and the cup cover,

Figure 3 is a schematic diagram of the relationship between the structure of the clamp and the lid of the separate type.

Detailed ways

The present invention will be further described now in conjunction with accompanying drawing,

A cup cover, which is composed of a plastic inner cover and a stainless steel outer cover. Its structure is: the plastic inner cover is made of grade 800E polypropylene plastic, a food-grade plastic (commonly known as PP plastic), and the middle part is a raised circle. The platform, whose diameter is smaller than the inner diameter of the cup mouth of the cup, has a circumferential groove on the outer edge of the round platform, and its width is slightly larger than the thickness of the cup mouth of the cup body. The threads matched with the mouth of the cup form a complete oblate plastic inner cover; the outer surface of the oblate plastic inner cover closely fits the stainless steel outer cover.

A jig used for a cup lid and its assembly, including a passing jig, which is composed of: the passing jig is a necking jig 4 with the big mouth facing upwards, and a nylon positioning gap and a positioning hole with a positioning interval and a take-out hole are placed under the necking jig. Fixture 1; the first workpiece of the stainless steel outer cover 2 with a large opening facing upwards is placed in the positioning fixture, and a circular stainless steel sheet 3 with a diameter larger than the top opening of the stainless steel outer cover 2 is placed in the stainless outer cover as the second workpiece. Then insert the necking fixture 4 with the big mouth upwards, and the plastic cover 5 with the insertion opening upwards in the necking fixture is the third workpiece, and is placed under the impact pressure head 6 controlled by the impact force.

The necking fixture 4 has a conical through-hole through which the diameter of the through-hole is comparable to the outer diameter of the plastic cover. The diameter of the delivery port of the fixture is the size of the interference fit of the inner diameter of the stainless steel outer cover, and the outer diameter of the plastic cover is embedded in the outer stainless steel cover with an interference fit.

Claims (1)

1. a bowl cover, by plastic inner cap, combine and form with stainless steel enclosing cover, plastic inner cap is to adopt trade mark 800E polypropylene plastics, being built into middle part is a projection circle platform, and its diameter is less than the rim of a cup internal diameter of cup, near circle platform outer, is having circumferential groove, its width is for being slightly larger than cup rim of a cup thickness, there is the chimb around circumference groove outer, and there is the screw thread matching with rim of a cup chimb inner side, becomes complete oblate plastic inner cap; At the outer surface of oblate plastic inner cap, fitting tightly stainless steel enclosing cover; Bowl cover clamp and its assembling, comprise one and pass through fixture, by fixture, is large mouth reducing fixture (4) upward, is equipped with the positioning fixture (1) with interval, location and taking-up hole that nylon is done under reducing fixture; In positioning fixture, inserting large opening degree stainless steel enclosing cover (2) is upward the first workpiece, in stainless steel enclosing cover, putting into the circular stainless steel substrates plate (3) that diameter is greater than stainless steel enclosing cover (2) caping mouth is second workpiece, be inserted in again large mouth reducing fixture (4) upward, in reducing fixture, the insert port lid (5) of moulding is upward the 3rd workpiece, and is placed under the impact pressure head (6) of the power control that is hit; It is characterized in that: described reducing fixture (4), it has the coniform round tube hole that passes through, its through-hole diameter is for covering external diameter and can compare with moulding, described analogy is that arrival end diameter by fixture is to mould the moving cooperation size of covering external diameter, the outlet diameter that send by fixture is the interference fit size of stainless steel enclosing cover internal diameter, moulds to cover external diameter interference fit and be embedded in stainless steel enclosing cover.

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