A preparation device and a preparation method for a closing cover

Abstract

The present invention discloses a preparation device and a preparation method for a closing cover. The preparation device for the closing cover includes: a female mold provided with a groove; a male mold having a three-dimensional surface matching the formed closing cover and protruding a convex column on this surface for guiding, correcting, and shaping. When the closing cover is not formed, it is a flat semi-finished product, and the flat semi-finished product is provided with a through hole. During forming, the flat semi-finished product covers the groove, the convex column is inserted into the hole and pressed into the groove, guiding the flat semi-finished product to contract and bend towards the groove, and under the limitation of the groove, automatically correcting the shape of the flat semi-finished product to match the surface of the male mold. After the male mold is pressed into the female mold and stops at a fixed position, the flat semi-finished product is formed into a three-dimensional closing cover. The preparation device of the present invention has high preparation efficiency, and the precision of the prepared closing cover is relatively accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of cup lids, and particularly to a preparation device and a preparation method for a closing lid. Background Art

[0002] The inventor disclosed a preparation method for a direct-drinking cup lid in Chinese Patent Document CN112550933A. The direct-drinking cup lid includes a closing lid and a lid ring fixedly connected to the edge of the closing lid. The closing lid and the lid ring form a lid cavity capable of covering the cup mouth, and the method includes the following steps: S1. Preparation of the closing lid semi-finished product: cutting the raw material into a planar semi-finished product, and opening a through hole in the semi-finished product; S2. Preparation of the closing lid finished product: forming the semi-finished product with the hole in step S1 into an integrated closing lid by an extrusion process, and the hole is pressed into an inclined cut by a crease; the closing lid has a concave and convex surface, and the inclined cut is arranged on the concave and convex surface at an inclined angle; S3. Preparation of the direct-drinking cup lid: preparing the lid ring on the edge of the closing lid, and fixedly connecting the closing lid with the lid ring arranged on the edge of the closing lid. However, the preparation device for the closing lid is not disclosed. Summary of the Invention

[0003] In view of this, to solve the above technical problems, the object of the present invention is to provide a preparation device and a preparation method for a closing lid. The preparation device has high preparation efficiency, and the precision of the prepared closing lid is relatively accurate.

[0004] The technical solution adopted is as follows:

[0005] A preparation device for a closing lid of the present invention includes:

[0006] A female mold provided with a groove;

[0007] A male mold having a three-dimensional surface matching the formed closing lid, and a convex column for guiding, correcting and shaping protruding from the three-dimensional surface. When the closing lid is not formed, it is a planar semi-finished product, and the planar semi-finished product is provided with a through hole; during forming, the planar semi-finished product covers the groove, the convex column is inserted into the hole and pressed into the groove, guiding the planar semi-finished product to contract and bend towards the groove, and under the limitation of the groove, automatically correcting the shape of the planar semi-finished product to match the three-dimensional surface of the male mold; after the male mold is pressed into the female mold and stops at a fixed position, the planar semi-finished product is formed into a three-dimensional closing lid.

[0008] Further, a downward step is provided at the edge of the groove.

[0009] Further, the groove is a cylindrical groove.

[0010] Further, the convex column is a tapered shape with a narrower bottom and a wider top.

[0011] Further, the cross-sectional shape and size of the convex post at its widest are matched with the shape and size of the orifice of the formed closed cover.

[0012] Further, limiting posts are provided around the edge of the groove.

[0013] A preparation method of a closed cover according to the present invention is prepared by using the above preparation device, and includes the following steps:

[0014] S1. Cover the flat semi-finished product on the groove;

[0015] S2. Insert the convex post into the orifice and press it into the groove, guide the flat semi-finished product to shrink and bend towards the groove, and under the limitation of the groove, automatically correct the shape of the flat semi-finished product to match the three-dimensional surface of the male mold;

[0016] S3. After the male mold is pressed into the female mold and stops at a fixed position, form the flat semi-finished product into a three-dimensional closed cover.

[0017] Further, in S1, the flat semi-finished product is covered on the groove, and the flat semi-finished product is limited by the limiting posts around the edge of the groove.

[0018] Further, in S3, the position where the male mold is pressed on the step is the fixed position where the male mold stops when it is pressed into the female mold.

[0019] The beneficial effects of the present invention are as follows:

[0020] In the preparation device of the present invention, since the male mold has a three-dimensional surface matching the formed closed cover and a convex post for guiding, correcting and shaping extends on this surface, the closed cover can be quickly prepared under the action of guiding, correcting and shaping of the convex post, and the precision of the prepared closed cover is relatively accurate. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic structural diagram of a female mold for Embodiment 1.

[0023] Figure 2 It is a schematic structural diagram of a male mold for Embodiment 1.

[0024] Figure 3Schematic diagram of the male mold shown from another angle for Example 1.

[0025] Figure 4 is Figure 3 the sectional view taken along line A-A in

[0026] Figure 5 Schematic diagram of the structure of a planar semi-finished product for Example 1.

[0027] Figure 6 Explosion structure schematic diagram of the preparation device in a working state.

[0028] Figure 7 Schematic diagram of the structure of a planar semi-finished product for Example 2. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only the preferred embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0030] Example 1

[0031] Refer to Figures 1-6 As shown, a preparation device for a closing cover in this embodiment includes a female mold 10 and a male mold 20.

[0032] The female mold 10 is provided with a groove 11; the groove 11 can be a cylindrical groove, that is, a columnar-shaped groove; as an embodiment, the cylindrical groove can be a cylindrical groove. A through hole 12 can also be provided at the bottom of the cylindrical groove. Limit posts 13 can be provided around the edge of the groove 11, and the limit posts 13 are used to limit the closing cover when it is not yet formed. A downward step 14 can be provided at the edge of the groove 11, and the step 14 is used for cooperation with the male mold 20 for limiting.

[0033] The male mold 20 has a three-dimensional surface 21 that matches the formed closing cover. The three-dimensional surface 21 can be a three-dimensional 3D curved surface, which matches the shape of the closing cover to be finally formed. A convex column 22 for guiding, correcting and shaping protrudes from the three-dimensional surface 21. As a preferred embodiment, the convex column is a tapered shape with a narrower bottom and a wider top. The cross-sectional shape and size of the convex column when it is widest match the shape and size of the orifice of the formed closing cover.

[0034] When the closed cover is not formed, it is a flat semi-finished product 30, and the flat semi-finished product 30 is provided with a through hole 31; during forming, the flat semi-finished product 30 covers the groove 11, the convex column 22 is inserted into the hole 31 and pressed into the groove 11, and the convex column 22 guides the flat semi-finished product 30 to contract and bend towards the groove 11, and under the limit of the groove 11, the convex column 22 automatically corrects the shape of the flat semi-finished product 30 to match the three-dimensional surface 21 of the male mold; after the male mold 20 is pressed into the female mold 10 and stops at a fixed position, the flat semi-finished product 30 is formed into a three-dimensional closed cover.

[0035] That is, a preparation method of a closed cover, which is prepared by using the above preparation device, includes the following steps:

[0036] S1. The flat semi-finished product 30 covers the groove 11;

[0037] S2. The convex column 22 is inserted into the hole 31 and pressed into the groove 11, guiding the flat semi-finished product 30 to contract and bend towards the groove 11, and under the limit of the groove 11, automatically correcting the shape of the flat semi-finished product 30 to match the three-dimensional surface 21 of the male mold;

[0038] S3. After the male mold 20 is pressed into the female mold 10 and stops at a fixed position, the flat semi-finished product 30 is formed into a three-dimensional closed cover.

[0039] As an embodiment, when the flat semi-finished product 30 covers the groove 11, the flat semi-finished product can be limited by the limit posts 13 around the edge of the groove 11.

[0040] And the position where the male mold 20 presses on the step 14 is the fixed position where the male mold 20 stops when it is pressed into the female mold 10.

[0041] Since the male mold has a three-dimensional surface that matches the formed closed cover, and a convex column for guiding, correcting and shaping protrudes from the three-dimensional surface, thus under the action of guiding, correcting and shaping of the convex column, the closed cover can be prepared quickly, and the precision of the prepared closed cover is relatively accurate.

[0042] Embodiment 2

[0043] Referring to Embodiment 1, the difference from Embodiment 1 is that the shape of the flat semi-finished product in this embodiment is as Figure 7 shown, and there is a relatively large hole in the middle. The position of the convex column of the corresponding male mold is also set at the corresponding middle part for matching insertion into the hole. The convex column is also used to guide, correct and shape the flat semi-finished product, and finally form a three-dimensional closed cover.

[0044] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent embodiments or modifications made without departing from the technical spirit of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for preparing a closed cover, characterized in that, it is prepared by using a preparation device for the closed cover, and the preparation device for the closed cover includes: a female mold provided with a groove; a downward step is provided at the edge of the groove; the groove is a cylindrical groove; limiting posts are provided around the edge of the groove; a male mold having a three-dimensional surface matching the formed closed cover, and a convex post for guiding, correcting and shaping extends from the three-dimensional surface, the convex post is a tapered shape with a narrower bottom and a wider top, and the cross-sectional shape and size of the convex post when it is widest match the shape and size of the orifice of the formed closed cover; the closed cover is a flat semi-finished product before being formed, and the flat semi-finished product is provided with a through orifice; The preparation method includes the following steps: S1. Cover the flat semi-finished product on the groove; S2. Insert the convex post into the orifice and press it into the groove, guiding the flat semi-finished product to contract and bend towards the groove, and automatically correcting the shape of the flat semi-finished product to match the three-dimensional surface of the male mold under the limitation of the groove; S3. After the male mold is pressed into the female mold and stops at a fixed position, form the flat semi-finished product into a three-dimensional closed cover.

2. The method for preparing a closed cover according to claim 1, characterized in that, in S1, the flat semi-finished product is covered on the groove, and the flat semi-finished product is limited by the limiting posts around the edge of the groove.

3. The method for preparing a closed cover according to claim 1, characterized in that, in S3, the position where the male mold is pressed on the step is the fixed position where the male mold is pressed into the female mold and stops.

Images