CN112932233A - Double-layer cup body and manufacturing method thereof - Google Patents
Double-layer cup body and manufacturing method thereof Download PDFInfo
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- CN112932233A CN112932233A CN202110385155.1A CN202110385155A CN112932233A CN 112932233 A CN112932233 A CN 112932233A CN 202110385155 A CN202110385155 A CN 202110385155A CN 112932233 A CN112932233 A CN 112932233A
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G19/00—Table service
- A47G19/22—Drinking vessels or saucers used for table service
- A47G19/2205—Drinking glasses or vessels
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G23/00—Other table equipment
- A47G23/04—Containers with means for keeping food cool or hot
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention discloses a double-layer cup body and a manufacturing method thereof, wherein the double-layer cup body has low requirements on equipment and machining precision, improves the welding quality and the production efficiency, and solves the problem that the mouth part of the traditional process cannot be welded due to special shape; the opening part of the shell is provided with a shell folded edge which is inward along the radial direction; the mouth part of the inner container is provided with an inner container folded edge which is outward along the radial direction, and the inner container folded edge is lapped and pressed on the folded edge of the outer shell to form a welded lapped edge surface; the manufacturing method of the double-layer cup body comprises the steps of firstly processing a liner folded edge outwards along the radial direction at the opening of the liner, then processing a horizontal shoulder platform at the upper part of the shell, cutting the shoulder platform by a cutting machine, removing the head part of the shell to form the shell folded edge, then sleeving the liner into the shell, welding the liner folded edge and the shell folded edge, and finally polishing.
Description
Technical Field
The invention relates to a container such as a kettle body, a cup body and the like, in particular to a double-layer cup body with an inner container and an outer shell and a manufacturing method thereof.
Background
In the current industry, the welding process of the arc mouth of the double-layer cup body such as a vacuum cup is divided into two types of overlap welding and edge welding.
The cup arc mouth overlap welding process structure shown in figure 1 has the advantages of simple welding structure, low process manufacturing cost, high penetration rate, low requirement on operation skill and the like. However, the effective overlap contact surface of the process is only the thickness of a shell material, the thickness of a common product is 0.3-0.5 mm, the effective overlap surface is few, the requirements on welding equipment and clamping concentricity are high, otherwise, the welding flow is uneven in height, the requirements on a sand-blasting welding procedure are high, and the vacuum space inside is easily damaged after polishing. In addition, the process must ensure that the welding position of the opening part of the shell is kept with a straight edge of more than 4mm at least, so as to ensure the welding quality and the batch production level. When welding a special-shaped product with an arc-shaped or inclined-plane-shaped mouth part in the attached drawings 1-1 and 1-2, the welding process is adopted, and the workpiece clamping cannot effectively achieve the positioning and concentricity of the welding part, so that the defects of eccentricity, abrupt welding flow, extremely poor vacuum rate, high rejection rate and the like are most of the welding effect, and the batch production cannot be realized.
The cup body circular arc opening edge-curling welding process structure shown in the attached figure 2 has the advantages that the edge of the opening part of the inner container is provided with the edge curl, the opening part of the shell is jointed and welded with the edge curl, the edge-curling welding process is similar to a straight opening welding process, and the cup body circular arc opening edge-curling welding process structure has the advantages of high concentricity, uniform welding flow and the like. Under the condition of good welding quality, the polishing process basically does not affect the internal vacuum space, and the product has advantages over the product of the lap welding process in the aspect of special drop test product functions. However, the edge of the opening of the inner container needs to be subjected to a hemming forming process before welding, and the precision, angle, length and the like of the hemming forming process directly affect the quality of the hemming welding process, so that the precision requirement of the hemming finish machining forming process before welding is high, and the process is very complicated. Moreover, the natural R angle of the thickness of the material after the edge curling/pressing always exists (generally about R0.4), which causes that the mouth part of the matched welding part cannot be sealed and a gap always exists, thereby generating the defects of insufficient welding and the like and having higher welding rejection rate. In addition, the process must ensure that at least a straight edge of more than 4mm is reserved at the welding position of the opening of the shell, and the thickness of the shell is at least 0.1mm thicker than the actual material of the liner, so that the welding quality and the batch production level can be ensured. If patent ZL201811640223.9 discloses "a thermos cup and assembly process of inner tube and outer tube thereof", and if patent ZL201922393358.6 discloses "a thermos cup oral area turn-up cooperation structure", all made detailed stipulations to the structure, size, the bending section etc. of turn-up welding, but this has increaseed the precision requirement to shell turn-up forming processing technology more like this, and the technology is more loaded down with trivial details, and the suitability is not wide. When welding a special-shaped product with an arc or inclined surface shape at the mouth part in the attached drawings 2-1 and 2-2, the matching surface of the process is very small, even the matching surface of only one point is adopted, and the defects of abrupt welding flow, high rejection rate and the like are caused after welding, so that the batch production cannot be realized.
In summary, the two welding processes of overlap welding and edge curl welding have high requirements on equipment and machining precision, and at the same time, the welding position of the opening of the shell must be ensured to be at least kept with a straight edge of more than 4mm, so that the welding process cannot be suitable for special-shaped products with the shapes of inclined planes or arc surfaces and the like of the opening of the shell.
Disclosure of Invention
The invention aims to provide a double-layer cup body which has low requirements on equipment and machining precision, improves the welding quality and the production efficiency and solves the problem that the traditional process cannot weld the special-shaped mouth part and a manufacturing method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the technical scheme 1: a double-layer cup body comprises an inner container and a shell, wherein a cavity is arranged between the inner container and the shell; the opening part of the shell is provided with a shell folded edge which is inward along the radial direction; the mouth of the inner container is provided with an inner container folded edge which is outward along the radial direction, and the inner container folded edge is lapped and pressed on the outer shell folded edge to form a welded lapped edge surface.
Preferably, the folded edge length of the shell is less than that of the inner container; the outer edge of the inner container folded edge is aligned with the folded angle part of the outer shell folded edge.
Preferably, the width of the overlap surface is 1.2mm to 1.7 mm.
Preferably, the included angle between the folded edge of the inner container and the horizontal direction is-5 degrees to-2 degrees; the shell folded edge is horizontally arranged, or the included angle between the shell folded edge and the horizontal direction is-2 degrees.
The technical scheme 2 is as follows: a method for manufacturing a double-layer cup body according to claim 1, comprising the steps of:
s1: processing a folded edge of the inner container, and performing edge folding process treatment on the opening part of the inner container outwards along the radial direction to form the folded edge of the inner container;
s2: processing a shell folded edge, processing a horizontal shoulder platform at the upper part of the shell, cutting the shoulder platform by using a laser cutting machine, and cutting the head part of the shell to form the shell folded edge by using the shoulder platform;
s3: inserting the inner container into the shell, and lapping the folded edge of the inner container on the folded edge of the shell to form a lapped edge surface;
s4: starting the equipment, pressing down the positioning top of the upper die to make the lapping surfaces fully contact, and welding the lapping surfaces;
s5: polishing the welding part to form a smooth mouth part.
Preferably, after the folding processing of the liner in the step S1, the included angle between the folded edge of the liner and the horizontal direction is-5 to-2 degrees.
Preferably, the step S2 of processing the horizontal shoulder platform adopts a shoulder pressing angle forming and leveling process, and the leveling mold forms an angle of-5 to-2 degrees with the horizontal direction, so that the angle of-2 to-0 degrees is maintained between the shoulder platform and the horizontal direction under the rigid property of the material.
Preferably, in step S2, the laser is vertically applied to the shoulder platform to cut off the head of the housing, and the remaining shoulder platform forms the folded edge of the housing.
Preferably, in step S4, the width of the overlap surface is 1.2mm to 1.7mm, and the welding position is outside the overlap surface; during welding, the outer end of the folded edge of the inner container is melted and filled between the folded edge of the inner container and the folded edge and the folded angle part of the outer shell to form a fillet.
Preferably, the welding in step S4 is laser welding or argon arc welding.
Compared with the prior art, the invention has the beneficial effects that: the double-folded structure of the inner container folded edge and the shell folded edge is adopted, the effective folded edge surface is greatly improved and is generally about 1.5mm, the requirement on effective welding positioning is greatly improved, the precision requirements on clamping concentricity, diameter fit tolerance and the like are reduced, the requirements on processing precision and equipment are very low, the folded edge surface is enlarged, the requirement on clamping positioning by welding processing is reduced, the welding quality is effectively improved, the double-folded structure can be suitable for special-shaped products with inclined surfaces, cambered surfaces and the like at the mouth part, and the application range is wide; secondly, machine tooling handles inner bag hem and shell hem, and a horizontally shoulder platform is processed earlier on shell upper portion, and reuse laser cutting falls the shell head, then the shoulder platform forms the shell hem promptly, puts into the shell with the inner bag, and the inner bag hem is withheld and is welded on the shell hem, and the location of inner bag hem and shell hem is all very easy like this, and manufacturing procedure is simple, easy operation and machining efficiency are high, can stabilize batch production.
The method has the further beneficial effects that: firstly, the length of the folded edge of the outer shell is smaller than that of the folded edge of the inner container, and the outer edge of the folded edge of the inner container is aligned with the folded angle part of the folded edge of the outer shell, so that the folded edge surface is enlarged to the greatest extent, the requirements on welding equipment and clamping concentricity are effectively reduced, the welding quality is improved, meanwhile, the operation requirement on a subsequent polishing process is also reduced, the rejection rate is reduced, and the production efficiency is improved; secondly, the width of the lapping surface is controlled to be 1.2 mm-1.7 mm, so that the welding quality is greatly improved, and the precision requirements of clamping concentricity, diameter fit tolerance and the like are reduced; thirdly, the folded edge surface of the shell is flat or has an included angle of-2 degrees with the horizontal direction, the folded edge surface of the liner has an included angle of-2 degrees with the horizontal direction, and the welding surface of the welding part is ensured to be closely attached in the process of pressing down the upper die and clamping, so that the welding part is ensured to be fully contacted, and the welding quality is improved; fourthly, the laser is vertically arranged on a shoulder platform of the shell, the head of the shell is directly cut off, the positioning is realized, the cutting efficiency is high, and the shell edge folding forming process is simple and easy to operate; fifthly, the outer side of the lapping surface is welded, the outer edge of the folded edge of the liner is fused and filled between the folded edge of the liner and the folded edge of the shell to form a fillet, so that the welding process is simplified, the welding quality is effectively improved, and the batch production level is improved.
Drawings
FIG. 1 is a schematic structural view of a conventional overlap welding process for a circular arc opening of a cup body;
FIG. 1-1 is a schematic structural view of a cup body with an arc mouth portion by a conventional overlap welding process;
FIG. 1-2 is a schematic structural view of a cup body with an inclined mouth part by adopting a traditional overlap welding process;
FIG. 2 is a schematic structural view of a conventional edge welding process for a circular arc opening of a cup body;
FIG. 2-1 is a schematic structural view of a cup body with an arc mouth portion by a conventional hemming welding process;
FIG. 2-2 is a schematic structural view of a cup body with an inclined mouth part by adopting a traditional edge welding process;
FIG. 3 is a schematic view of a two-piece cup of the present invention;
FIG. 4 is an enlarged view taken at A of FIG. 3;
FIG. 5 is a flow chart of the process for folding the inner container in the method for manufacturing the double-layered cup body according to the present invention;
FIG. 6 is a flow chart of the process for folding the outer shell in the method for manufacturing the double-layered cup according to the present invention;
FIG. 7 is a schematic view showing a structure of a double-layered cup according to the present invention in which an inner container and an outer shell are welded;
FIG. 8 is a schematic structural view of a cup body with an inclined mouth formed by the method of manufacturing a double-layered cup body according to the present invention;
FIG. 9 is a schematic view of a cup body with a cambered surface at the mouth, which is manufactured by the method for manufacturing a double-layer cup body according to the present invention.
Detailed Description
In order to make the technical scheme of the invention clearer, the invention is described in detail below with reference to fig. 3-9. 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.
Referring to fig. 3 and 4, the double-layer cup body comprises an inner container 2 and a shell 1, wherein a cavity is arranged between the inner container 2 and the shell 1; the inner container and the shell are in the prior art, in products such as a heat preservation pot, a heat preservation cup and the like, a cavity between the inner container and the shell is vacuumized to realize heat preservation performance, generally, the inner container is put into the shell firstly, cup mouths of the inner container and the shell are welded in a sealing mode, then a cup bottom of the shell is welded, and then the inner container is vacuumized, the process is also in the prior art, and no description is given here, and the invention focuses on a sealing welding structure of the inner container 2 and the shell 1; the opening part of the shell 1 of the double-layer cup body is provided with a shell folded edge 10 which is inward along the radial direction; the mouth part of the inner container 2 is provided with an inner container folded edge 20 which is outward along the radial direction, and the inner container folded edge 20 is lapped and pressed on the shell folded edge 10 to form a welded lapped edge surface 3; according to the invention, a double-folded structure of the lapping surface is formed by the shell folding edge and the liner folding edge, so that the effective lapping matching surface is enlarged and widened, the effective welding positioning requirement is greatly improved, the precision requirements of clamping concentricity, diameter matching tolerance and the like are reduced, the welding can be stably carried out within the tolerance of 0-0.4mm, and the concentricity is 0-0.2 mm; the double-layer cup body has low requirements on processing precision and equipment, and the increased lapping surface reduces the requirements on clamping and positioning in welding processing, effectively improves the welding quality and can adapt to batch production.
Referring to the attached figures 8 and 9, the cup body with the opening part being the inclined plane and the arc surface adopts the double-folded-edge welding structure, so that the cup can be suitable for special-shaped products with the opening part being the inclined plane, the arc surface and the like, the problem that the special-shaped products at the opening part in the traditional process cannot be welded is solved, the application range is wide, the welding efficiency overlap surface is increased, the requirements on welding, positioning, clamping and the like are not high, and the cup can be stably produced in batches.
Preferably, the length of the shell folded edge 10 is less than that of the liner folded edge 20; the outer edge of the inner container folded edge 20 is aligned with the folded corner part of the outer shell folded edge 10; the width of the lapping surface 3 is 1.2 mm-1.7 mm, and the optimal width of the lapping surface 3 is 1.5 mm; therefore, the overlap surface is enlarged to the maximum extent, the requirements on welding equipment and clamping concentricity are effectively reduced, the welding quality is improved, meanwhile, the operation requirement on a subsequent polishing process is also reduced, the rejection rate is reduced, and the production efficiency is improved.
Preferably, the included angle between the inner container folded edge 20 and the horizontal direction is-5 degrees to-2 degrees; the shell folded edge 10 is horizontally arranged, or the included angle between the shell folded edge 10 and the horizontal direction is-2 degrees; namely, the flanging surface of the shell is smooth or inverted cone-2 degrees, and the inverted cone of the flanging surface of the inner container is more than-2 degrees, so that the welding surface can be firmly attached, and the welding quality can be stabilized.
Referring to fig. 5 to 9, according to another aspect of the present invention, a method for manufacturing the double-layered cup includes the following steps:
s1: processing the inner container folded edge 20, referring to the attached figure 5, firstly adopting a conventional forming process, enabling the opening part of the inner container 2 to be outward along the radial direction, and processing the folded edge by a machine to form the inner container folded edge 20;
s2: shaping the folded edge surface of the folded edge 20 of the liner, and shaping an included angle between the folded edge 20 of the liner and the horizontal direction to be-5 degrees to-2 degrees by adopting a leveling process, wherein the leveling process is the prior art and is not described any more;
s3: processing a shell folded edge 10, referring to fig. 6, processing a horizontal shoulder platform 11 at the upper part of the shell 1, wherein the shoulder platform 11 can be processed and formed with the shell 1 by adopting a conventional forming process, or processing the shoulder platform 11 by adopting a shoulder angle pressing forming process after the shell 1 is formed; the shell forming process and the shoulder angle pressing forming process are both the prior art and are not described in detail;
s4: cutting the shoulder platform 11, after the head of the shell 1 is cut off, the shoulder platform 11 forms a shell folded edge 10 with an opening inward along the radial direction, a laser cutting machine can be adopted, after the width of the shell folded edge 10 is reserved, laser vertically strikes the shoulder platform 11, the head of the shell 1 is cut off, and the remaining shoulder platform 11 forms the shell folded edge 10;
s5: shaping the folded edge surface of the shell folded edge 10, adopting a leveling process, wherein the included angle between a leveling die and the horizontal direction is-5 degrees to-2 degrees, so that the included angle between the shell folded edge 10 and the horizontal direction is kept at-2 degrees to-0 degrees under the rigid characteristic of materials, and when the included angle between the shoulder platform 11 and the horizontal direction is 0 degree, the step can be omitted, and the steps of leveling and then cutting or cutting and then leveling can be carried out, so that the protection range of the invention is considered;
s6: inserting the inner container 2 into the shell 1, lapping the inner container folded edge 20 on the shell folded edge 10 to form a lapped edge surface 3, placing the inner container 2 and the shell 1 on a lower base 4 of an equipment mold for positioning, and arranging a positioning ring 5 on the upper part of the shell 1;
s7: starting the equipment, pressing down the upper die, enabling a positioning top head 6 of the upper die to be in contact with the mouth of the liner and positioning the workpiece, and simultaneously enabling the lapping surface to be in full contact, wherein the width of the lapping surface is 1.2-1.7 mm; the overlap surface is increased, the precision requirements of clamping concentricity, diameter fit tolerance and the like are reduced, the welding can be stably carried out within the tolerance of 0-0.4mm, and the concentricity is 0-0.2 mm; meanwhile, the workpiece rotates synchronously with the lower base, laser welding or argon arc welding is started, and the outer side of the lap surface is welded; during welding, melting the outer end of the folded edge of the inner container, and filling the melted outer end between the folded edge of the inner container and the folded corner part of the folded edge of the outer shell to form a fillet;
s8: polishing the welding part to form a smooth mouth part, and finishing the arc mouth welding of the mouth part of the cup body.
Referring to fig. 8 and 9, the cup body with the beveled mouth is welded by the manufacturing method of the present invention, and the process and steps are the same, and will not be described repeatedly.
In the above step S7, it is also possible that the workpiece is fixed, the welding gun rotates to perform welding, and the like, and it should be apparent to those skilled in the art that modifications and modifications can be made without departing from the principle of the present invention.
Claims (10)
1. The utility model provides a double-deck cup, includes inner bag (2) and shell (1), and is equipped with cavity, its characterized in that between inner bag (2) and shell (1): the opening part of the shell (1) is provided with a shell folded edge (10) which is inward along the radial direction; the opening of the inner container (2) is provided with an inner container folded edge (20) which is outward along the radial direction, and the inner container folded edge (20) is lapped and pressed on the shell folded edge (10) to form a welded lapped surface (3).
2. The dual layer cup of claim 1, wherein: the length of the shell folded edge (10) is less than that of the liner folded edge (20); the outer edge of the inner container folded edge (20) is aligned with the folded corner part of the outer shell folded edge (10).
3. The dual layer cup of claim 1, wherein: the width of the overlap surface (3) is 1.2 mm-1.7 mm.
4. The dual layer cup of claim 1, wherein: the included angle between the folded edge (20) of the inner container and the horizontal direction is-5 degrees to-2 degrees; the shell folding edge (10) is horizontally arranged, or the included angle between the shell folding edge (10) and the horizontal direction is-2 degrees.
5. A method of manufacturing a double layered cup according to any one of claims 1 to 4, comprising the steps of:
s1: processing a folded edge of the inner container, and performing edge folding process treatment on the opening part of the inner container outwards along the radial direction to form the folded edge of the inner container;
s2: processing a shell folded edge, processing a horizontal shoulder platform at the upper part of the shell, cutting the shoulder platform by using a laser cutting machine, and cutting the head part of the shell to form the shell folded edge by using the shoulder platform;
s3: inserting the inner container into the shell, and lapping the folded edge of the inner container on the folded edge of the shell to form a lapped edge surface;
s4: starting the equipment, pressing down the positioning top of the upper die to make the lapping surfaces fully contact, and welding the lapping surfaces;
s5: polishing the welding part to form a smooth mouth part.
6. The method of manufacturing a double-layered cup body according to claim 5, wherein: after the folding processing of the liner in the step S1, the included angle between the folded edge of the liner and the horizontal direction is-5 to-2 degrees.
7. The method of manufacturing a double-layered cup body according to claim 5, wherein: and S2, processing the horizontal shoulder platform, adopting a shoulder pressing angle forming and leveling process, wherein the included angle between the leveling die and the horizontal direction is-5 degrees to-2 degrees, so that the included angle between the shoulder platform and the horizontal direction is kept at-2 degrees to 0 degrees under the rigid characteristic of the material.
8. The method of manufacturing a double-layered cup body according to claim 5, wherein: in step S2, the laser is vertically applied to the shoulder platform to cut off the head of the housing, and the remaining shoulder platform forms the folded edge of the housing.
9. The method of manufacturing a double-layered cup body according to claim 5, wherein: in the step S4, the width of the lap surface is 1.2 mm-1.7 mm, and the welding position is the outer side of the lap surface; during welding, the outer end of the folded edge of the inner container is melted and filled between the folded edge of the inner container and the folded edge and the folded angle part of the outer shell to form a fillet.
10. The method of manufacturing a double-layered cup body according to claim 5, wherein: the welding in the step S4 is laser welding or argon arc welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110385155.1A CN112932233A (en) | 2021-04-09 | 2021-04-09 | Double-layer cup body and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110385155.1A CN112932233A (en) | 2021-04-09 | 2021-04-09 | Double-layer cup body and manufacturing method thereof |
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| CN112932233A true CN112932233A (en) | 2021-06-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114619208A (en) * | 2022-03-16 | 2022-06-14 | 浙江飞剑工贸有限公司 | Manufacturing method of vacuum cup with inclined head |
| CN115070353A (en) * | 2022-06-17 | 2022-09-20 | 佛山市酷狄五金有限公司 | Preparation process of stainless steel special-shaped vacuum cup |
-
2021
- 2021-04-09 CN CN202110385155.1A patent/CN112932233A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114619208A (en) * | 2022-03-16 | 2022-06-14 | 浙江飞剑工贸有限公司 | Manufacturing method of vacuum cup with inclined head |
| CN114619208B (en) * | 2022-03-16 | 2022-11-29 | 浙江飞剑工贸有限公司 | Manufacturing method of vacuum cup with inclined head |
| CN115070353A (en) * | 2022-06-17 | 2022-09-20 | 佛山市酷狄五金有限公司 | Preparation process of stainless steel special-shaped vacuum cup |
| CN115070353B (en) * | 2022-06-17 | 2024-05-07 | 佛山市酷狄五金有限公司 | Preparation process of stainless steel special-shaped thermos cup |
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