CN203668762U - Molded pulp container cover with clamping tenons and manufacturing mold of molded pulp container cover - Google Patents
Molded pulp container cover with clamping tenons and manufacturing mold of molded pulp container cover Download PDFInfo
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- CN203668762U CN203668762U CN201320641704.8U CN201320641704U CN203668762U CN 203668762 U CN203668762 U CN 203668762U CN 201320641704 U CN201320641704 U CN 201320641704U CN 203668762 U CN203668762 U CN 203668762U
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- trip
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- paper pulp
- lid
- punch
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Abstract
The utility model discloses a molded pulp container cover with clamping tenons. The molded pulp container cover comprises a middle cover top and a cover opening (9) arranged outside the periphery of the cover top and tilting downwards. The clamping tenons (5) which protrude inwards are arranged in the middle of the inner side of the cover opening (9) in the peripheral direction; the clamping tenons (5) are solid; the protruding height h of the clamping tenons is larger than the thickness of a body of the cover opening, wherein h is larger than 0 and less than or equal to 1. The utility model further provides a manufacturing mold of the container cover. Arc-shaped grooves (4) are formed in the middle of the side faces of a male mold in the peripheral direction, and the depth h of the arc-shaped grooves is larger than 0 and less than or equal to 1. In the hot-pressing shaping process, by means of the increased interval between the male mold and a female mold, the solid clamping tenons can be directly manufactured while hot-pressing shaping is carried out on wet paper blanks. The molded pulp container cover has the advantages of being low in manufacturing cost and high in strength.
Description
Technical field
The present invention relates to the mfg. moulding die of paper pulp moulding product, relate in particular to the paper pulp moulded container product that is provided with trip, more particularly, relate to the mfg. moulding die with the container cover product of trip.
background technology
Chinese invention patent " manufacture method of moulding of plant fibres bowl cover barb groove " (application number CN200910157668.6) discloses a kind of processing method of the molding bowl cover that is provided with barb groove, accompanying drawing by this application is known, and bowl cover comprises the caping at middle part and is placed on caping downward-sloping lid mouth around.The side circumferencial direction of its middle cover mouth is provided with to the inside outstanding barb groove.
As shown in Figures 2 and 3, the mold process of paper pulp moulded container lid, container cover 3 realizes compression molding by mold and bed die matched moulds.Under normal circumstances, the structure of bowl cover comprises caping and is placed on caping downward-sloping lid mouth around, in order to facilitate processing and forming, can bed die be punch, and mold is die.In Fig. 3, after the bottom moulding of bowl cover mouth, there is overlap 7, need secondary operations, after excision, obtain product.And lower punch outside is opening mode, unobstructed structure.
Under prior art, pulp mould, due to upper and lower open-close module, is on the facade of mould, directly to make the Fastening tenon structure with negative angle.Therefore, including above-mentioned patent, the barb groove of paper pulp moulded container lid mostly adopts post forming method at present, first by after wet paper pulp embryo vacuum drainage moulding, transfer to again thermocompression forming on hot pressing die and become container cover, then as having provided three kinds of methods, the manufacture method of patent 200910157668.6 moulding of plant fibres bowl cover barb grooves is achieved: mechanical slide extruding, runner extruding and air sac pressing, squeeze out projection at the trip position of container cover, constraint by projection to vessel port, guarantees unlikely the spilling of article in container.But because be carries out secondary extrusion moulding after HEAT SETTING becomes lid again, no matter adopt above which kind of method, all by the paper pulp wall at bending trip position, realize the constraint to vessel port, adopting trip that above method is made is all hollow concave shaped, its shortcoming is exactly that trip position paper pulp fiber is lost, certainly will cause strength decreased, seals not tight.
In addition, pulp mould mostly adopts open extrusion die at present, i.e., when punch-die matched moulds extruding, paper pulp can freely overflow, and the paper pulp overflowing is cut off after moulding.Cause like this waste, improved product cost; And due to secondary punch, causing otch to occur paper pulp hair stubble, hair stubble drops very unhygienic in food.
Generally speaking, the gap between the punch and matrix tool of pulp mould is uniformity, and the corresponding position of the protruding counterdie of patrix is recessed, and the corresponding position of the protruding patrix of counterdie must be recessed.Form the stereochemical structure of pulp product with this.But no matter product is any shape, what purposes, the paper pulp thickness of its product is cardinal principle uniformity.
Summary of the invention
For the problems referred to above, the present invention is carved with groove at the position of the punch edge clipping of the thermocompression forming mould of container cover, in the process of thermocompression forming, utilizes the increase in gap between convex concave mould, in l Water Paper embryo thermocompression forming, directly produces solid trip.Therefore, the invention provides a kind of paper pulp moulded container lid product with trip, and therefore the mould of realizing product manufacture is provided, and the one, on the punch of container cover hot pressing card falcon position, corresponding site is carved with groove, forms confined space make high-intensity solid card falcon by baffle ring; Another is that corresponding site is carved with groove on the punch of container cover hot pressing card falcon position, forms confined space make high-intensity solid card falcon by embedding.Thereby the density of the trip forming is not less than the density of container cover body.The paper pulp moulded container lid of processing has low cost of manufacture, feature that intensity is high.
In order to achieve the above object, the invention provides a kind of paper pulp moulded container lid with trip, comprise the caping at middle part and be placed on caping downward-sloping lid mouth around.A described lid mouthful inside circumference direction is provided with inwardly outstanding solid trip; The height of projection of described trip exceeds lid mouthful body thickness 0<h≤1 millimeter.
In addition, described " lid mouthful terminal edge is smooth regular ", is intended to difference outstanding and prior art mode paper pulp moulded container product.The paper pulp moulded container product of prior art, as shown in Figure 3 after the mold pressing of oral area flanging, due in opening, unrestricted state, hemmed edges presents the irregular burr in place or sawtooth, therefore smooth not, needs secondary operations cutter to cut into.That is to say, the processing mode of prior art, the open processing that is processed as of covering mouthful end, terminal position is unrestricted, therefore has toothed edge, rough situation.And the present invention is due to a lid mouthful end is limited to the space inner mold moulding of sealing, thus the lid mouth end of producing directly for smooth regular, thereby the operation of having exempted prior art and need to cut lid mouthful.
Trip can be the circular of closure, can be also the card falcon that 6 or 8 lobes are interrupted, and described trip is for arranging continuously or intermittently.
Gai Kou lower end is owing to being that close die extruding forms, and shape is regular, is different from the wantonly radial of irregularity that common open pulp mould is squeezed into, therefore, without secondary punch finishing, has reduced processing cost, and there is no trimming waste.
In addition, in the Punching Technology of common pulp product, cutting knife constantly weares and teares, and makes otch with a large amount of paper pulp fiber hair stubbles, if for splendid attire food, extremely unhygienic.And the lid mouth end of container cover of the present invention is flanging outside entire 0-3 millimeter, avoid secondary trimming.
The smooth outer surface of lid mouth is smooth, and especially a lid mouthful outside is smooth smooth surface, there is no the indenture of secondary extrusion card falcon, and the image appearance of product is good, the class of improving product.
The present invention also provides a kind of mfg. moulding die of the above-mentioned paper pulp moulded container lid with trip, comprise the die and the punch that form container cover sunk structure, described die inside sidewalls and punch sidewall outside be the corresponding conical surface that forms the outward-dipping lid mouth of container cover mutually.Wherein, the conical surface of described punch middle part circumferencial direction is provided with deep-slotted chip breaker, degree of depth 0<h≤1 millimeter of described deep-slotted chip breaker.Wherein, described deep-slotted chip breaker arranges continuously or intermittently.
A kind of optimal way, is provided with elasticity baffle ring by offering annular groove edge on the die body in the conical surface outside of described punch.The inwall of described elasticity baffle ring and the sidewall of described die form the warehouse of sealing in mold process.Sealing warehouse herein obviously distinguishes with prior art, is limited in enclosure space, thereby produces smooth regular lid mouth terminal edge for base that paper pulp is wet.
Another kind of optimal way, the conical surface arranged outside of described punch has the cell body that holds described die sidewall.The sidewall of described cell body and described die also forms the warehouse of sealing in mold process.
And in order to improve the plumpness of edge clipping, strengthen the density of edge clipping position paper pulp fiber, increase the intensity of edge clipping, the present invention adopts the mandatory flash mechanism that prevents, by forming a confined space between punch-die, prevent wantonly overflowing of paper pulp, forcibly increase the pulp quality in groove, the density that improves edge clipping, makes the density at edge clipping position be equal to the density of pulp body.
In addition, described die and punch correspondence are provided with the step notch that forms the outer flanging of container cover lid mouth 0-3 millimeter.
By above-mentioned mould, the present invention also provides a kind of manufacture method of the paper pulp moulded container lid with trip, and in the die and punch of container molding lid, the sidewall of described punch is carved with groove, in the process of thermocompression forming, l Water Paper embryo is squeezed out Fastening tenon structure at described groove position.Under optimal way, described groove is continuous or interrupted deep-slotted chip breaker.And in the process of thermocompression forming, described trip forms in the extruding space of sealing.
On punch mold due to trip position, dig groove, the gap at the card falcon position between convex concave mould is increased, so in the time of the hot pressing of punch-die matched moulds, thick l Water Paper indusium extruding, paper pulp is packed in this cavity, utilizes so the lofty variation of the die clearance at trip position, and the paper pulp thickness of realizing trip position increases, make pulp product there is the Fastening tenon structure of convex, realize the one-shot forming of pulp product hot pressing and Fastening tenon structure.The present invention, at the corresponding site of paper pulp thermocompression forming mould punch trip, dig out groove, and the relevant position of die remains unchanged, owing to there is no negative angle, so do not affect the normal folding of mould.
After the pulp product thermocompression forming of band card falcon, due to the distinctive softness of pulp product and elasticity, can, by tread flaking by force, take out pulp product.
The pulp product of prior art after the formation of trip is all first thermocompression forming, is made trip on another set of mould, and such edge clipping is because paper pulp fiber is not had working strength by bending.The present invention realizes trip by the protruding one-shot forming of the thermocompression forming of pulp product and trip.The trip of so directly making, owing to being solid, and does not have secondary extrusion, does not hinder fiber, has greatly improved the structural strength of trip, uses more firm; Become one-shot forming from secondary extrusion in addition, saved man-hour greatly, enhanced productivity; Save a mold simultaneously, saved cost.
In prior art, all need to stay and establish the groove that forms trip on extruding trip mould, in mold pressing processing, known situation is that the setting of this groove, in the time will taking out shaped article, exists the problem of withdrawing pattern difficulty, even can cause damage to product.But due to the particularity of product of the present invention, trip size is little, and paper pulp moulding product itself has certain elasticity, can meet the requirement of taking out product after withdrawing pattern.
Accompanying drawing explanation
Fig. 1 is the paper pulp moulded container lid structural representation of the present invention with trip.
Fig. 2 is the not processing of the paper pulp moulded container box cover die with trip original state schematic diagram of prior art.
Fig. 3 is relative Fig. 2 Mould Machining completion status schematic diagram.
Fig. 4 is band trip paper pulp moulded container box cover die processing original state schematic diagram of the present invention.
Fig. 5 is relative Fig. 4 Mould Machining completion status schematic diagram.
Fig. 6 is container cover Mould Machining original state schematic diagram of the present invention in another embodiment.
Fig. 7 is relative Fig. 6 Mould Machining completion status schematic diagram.
Fig. 8 is the structure for amplifying schematic diagram at A place in Fig. 7.
The specific embodiment
The present invention, with the paper pulp moulded container lid of trip, comprises the caping 8 at middle part and is placed on caping downward-sloping lid mouth 9 around as shown in Figure 1, and described lid mouthful 9 middle inside circumferencial directions are provided with inwardly outstanding trip 5; Height of projection 0<h≤1 millimeter of described trip 5.In addition, the outside of described lid mouth 9 is smooth surface.
Conventionally, moulding said vesse lid, need to form die 1 and the punch 2 of container cover sunk structure, and die 1 inside sidewalls and punch 2 sidewalls outsides be the corresponding conical surface that forms the outward-dipping lid mouth 9 of container cover 3 mutually.In addition, the conical surface of described punch 2 middle part circumferencial direction is provided with deep-slotted chip breaker 4, degree of depth 0<h≤1 millimeter of described deep-slotted chip breaker 4.
For improving the structural strength at card falcon position, the present invention adopts closed die, is respectively the Mould Machining mode shown in Fig. 4-5 and Fig. 6-8.
Wherein, Fig. 6-8th arranges baffle ring 6(baffle ring bottom spring is set on the punch (or counterdie) of thermocompression forming, be placed in groove), baffle ring 6 protrudes from the plane of punch (or counterdie) in the time of the die sinking of hot pressing convex concave mould, it is highly equal to or greater than the thickness of the wet embryo of paper mould, the internal diameter of baffle ring is slightly larger than or equals wet embryo, makes wet embryo to shift easily and to be full of on punch.
In the process of matched moulds, die 1(patrix) first contact with baffle ring 6 and promote baffle ring and press to punch 2, final matched moulds, in whole process, the embryo (or container molding 3) that wets is completely enclosed within mould, cannot overflow.
Because the moisture of l Water Paper embryo is in 70% left and right, so the wet embryo of paper pulp is hot pressed in the process that 0.5-1mm is thick by 3-5mm thick quilt, paper pulp fiber can have certain mobility.In the process of drying in hot pressing, moisture can be discharged from passage, and paper pulp fiber overflows nowhere, so, in closed mould, due to pressure uniformity, the paper pulp at trip position can be full of completely, its density and pulp body are suitable, can reach the effect of actual use completely.
In addition, as Figure 4 and 5, adopt embedded mould, embedded mould is closed type mould equally, and the internal diameter of counterdie groove is suitable with the external diameter of patrix.Like this, in the time that patrix embeds counterdie, whole mould inside forms enclosure space.
In matched moulds process, patrix enters counterdie, first form the space of a sealing, in to the extrusion process of the wet embryo of paper pulp fiber, because the moisture of l Water Paper embryo is in 70% left and right, so the wet embryo of paper pulp is hot pressed in the process that 0.5-1mm is thick by 3-5mm thick quilt, paper pulp fiber can have certain mobility.In the process of drying in hot pressing, moisture can be discharged from passage, and paper pulp fiber overflows nowhere, so, in closed mould, due to pressure uniformity, the paper pulp at trip position can be full of completely, its density and pulp body are suitable, can reach the effect of actual use completely.
0-3 millimeter flanging 99 is owing to being enclosure space extruding gained as shown in Figure 8, and the smooth of the edge, without secondary trimming.What prior art adopted is as Figure 2-3, and the radial irregularity of flanging of extrusion must secondary trimming, the waste material of taking a lot of work.
Above two kinds of pulp products that mode is made, because the intensity of pulp product is little and have certain elasticity surplus, can adopt machinery tread flaking mode by force to take out pulp product.
The present invention is carved with groove at the position of the punch edge clipping of the thermocompression forming mould of container cover, in the process of thermocompression forming, utilizes the increase in gap between convex concave mould, in l Water Paper embryo thermocompression forming, directly produces trip.Paper pulp moulded container lid prepared by the present invention has low cost of manufacture, feature that intensity is high.
The above; it is only the preferably specific embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.
Claims (7)
1. the paper pulp moulded container lid with trip, it is characterized in that, comprise the caping (8) at middle part and be placed on caping downward-sloping lid mouth (9) around, described lid mouthful (9) inside circumference is provided with inwardly outstanding solid trip (5); Height of projection 0<h≤1 millimeter of described trip (5).
2. according to claim 1 with the paper pulp moulded container lid of trip, it is characterized in that, described trip (5) is for arranging continuously or intermittently.
3. according to claim 1 with the paper pulp moulded container lid of trip, it is characterized in that, described lid mouthful terminal edge is smooth regular.
4. the mfg. moulding die of the arbitrary described paper pulp moulded container lid with trip of the claims 1-3, comprise the die (1) and the punch (2) that form container cover sunk structure, described die (1) inside sidewalls and punch (2) sidewall outside are the mutual corresponding side that forms the outward-dipping lid of container cover (3) mouthful (9); It is characterized in that,
Middle part, the side circumferencial direction of described punch (2) is provided with deep-slotted chip breaker (4), degree of depth 0<h≤1 millimeter of described deep-slotted chip breaker (4).
5. according to claim 4 with the mfg. moulding die of the paper pulp moulded container lid of trip, it is characterized in that, described deep-slotted chip breaker (4) arranges continuously or intermittently.
6. according to the mfg. moulding die with the paper pulp moulded container lid of trip described in claim 4 or 5, it is characterized in that, on the die body in the conical surface outside of described punch (2), edge is provided with elasticity baffle ring (6);
The sidewall of the inwall of described elasticity baffle ring (6) and described die (1) forms the warehouse of sealing in mold process.
7. according to the mfg. moulding die with the paper pulp moulded container lid of trip described in claim 4 or 5, it is characterized in that, the side arranged outside of described punch (2) has the cell body that holds described die sidewall;
The sidewall of described cell body and described die (1) forms the warehouse of sealing in mold process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320641704.8U CN203668762U (en) | 2013-10-17 | 2013-10-17 | Molded pulp container cover with clamping tenons and manufacturing mold of molded pulp container cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320641704.8U CN203668762U (en) | 2013-10-17 | 2013-10-17 | Molded pulp container cover with clamping tenons and manufacturing mold of molded pulp container cover |
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| Publication Number | Publication Date |
|---|---|
| CN203668762U true CN203668762U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320641704.8U Expired - Fee Related CN203668762U (en) | 2013-10-17 | 2013-10-17 | Molded pulp container cover with clamping tenons and manufacturing mold of molded pulp container cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203668762U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603234A (en) * | 2013-10-17 | 2014-02-26 | 江峰 | Molded pulp container cover with clamping tenon, mold for manufacturing container cover and manufacturing method |
| CN107869094A (en) * | 2016-09-23 | 2018-04-03 | 兴中环保科技股份有限公司 | Paper-plastic cover and forming device thereof |
| EP3741266A4 (en) * | 2018-01-16 | 2021-09-15 | Be Green Packaging Co., Ltd. | Negative angle pulp molded cup lid |
| US11560673B2 (en) | 2019-01-31 | 2023-01-24 | Be Green Packaging Llc | Pulp molding production line and processing method thereof |
-
2013
- 2013-10-17 CN CN201320641704.8U patent/CN203668762U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603234A (en) * | 2013-10-17 | 2014-02-26 | 江峰 | Molded pulp container cover with clamping tenon, mold for manufacturing container cover and manufacturing method |
| CN103603234B (en) * | 2013-10-17 | 2016-09-14 | 江峰 | A kind of thermocompression forming mould manufacturing the paper pulp moulded container lid with trip |
| CN107869094A (en) * | 2016-09-23 | 2018-04-03 | 兴中环保科技股份有限公司 | Paper-plastic cover and forming device thereof |
| EP3741266A4 (en) * | 2018-01-16 | 2021-09-15 | Be Green Packaging Co., Ltd. | Negative angle pulp molded cup lid |
| US11560673B2 (en) | 2019-01-31 | 2023-01-24 | Be Green Packaging Llc | Pulp molding production line and processing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20171017 |