CN112176779A

CN112176779A - Manufacturing mold, manufacturing method and product of concave arc formed on paper-plastic cup lid

Info

Publication number: CN112176779A
Application number: CN201910587811.9A
Authority: CN
Inventors: 赖宗伸; 饶日华
Original assignee: Foshan Meiwanbang Technology Co ltd
Current assignee: Foshan Meiwanbang Technology Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2021-01-05

Abstract

A manufacturing mold, manufacturing method and product for forming concave arc on paper-plastic cup lid, which uses the created manufacturing mold to implement the claimed manufacturing method, so as to form the paper-plastic cup lid product with concave arc on the paper-plastic cup lid that has not been formed; the manufacturing mold is mainly provided with a rubber ring inside, and when the manufacturing mold is used for processing, the rubber ring is driven to abut against the side surface of the paper-plastic cup cover which is not formed with the concave arc, so that the paper-plastic cup cover can quickly generate the concave arc.

Description

Manufacturing mold, manufacturing method and product of concave arc formed on paper-plastic cup lid

[ technical field ] A method for producing a semiconductor device

The invention relates to a manufacturing mold, a manufacturing method and a finished product for forming an inner concave arc on a paper-plastic cup cover, in particular to a manufacturing mold and a manufacturing method which can conveniently form an inner concave arc, and a paper-plastic cup cover finished product manufactured by using the manufacturing mold to realize the manufacturing method.

[ background of the invention ]

Many people, especially office workers, almost daily buy a cup of coffee from a brand chain super or fast food restaurant for a day's job, do not drink coffee, and seem to be reluctant to take the job. If the consumer does not have a portable cup, the 'portable paper cup' can be used by a business super or fast food restaurant for the consumer to hold, and the 'portable paper cup' can be held by the consumer to achieve the effects of carrying, moving and drinking at any time. "out-wrap paper cups" are also often referred to by the names "disposable paper cups", "disposable hand cups" or "disposable paper cups", etc. The conventional externally-carried paper cup generally comprises a cup body and a cup cover, wherein the cup body is used for containing liquid beverage, and the cup cover is covered on the cup opening of the cup body to prevent the liquid beverage in the cup body from overflowing.

The paper-plastic cup cover is a paper-plastic product which is made by mixing paper pulp and/or plant fiber materials as materials and adopting a mould pulp sucking molding and hot-pressing shaping technology, and compared with the plastic cup cover, the paper-plastic cup cover has the advantages of being discarded and easy to process, enabling the materials to be repeatedly used, not causing environmental pollution, and completely meeting the requirements of environmental protection and carbon reduction, so that the paper-plastic cup cover is popularized and used by governments and various environmental protection groups.

A known simple paper-plastic cup lid is shown in figures 1-3, which is a paper-plastic cup lid 1, the structure of which is provided with a top surface 11, the top surface 11 is provided with a drinking opening 111 to facilitate drinking of the beverage in the cup, the top surface 11 can have various structures, but the various structures on the top surface 11 are irrelevant to the present discussion, so that various possible structures on the top surface 11 are not detailed; the periphery of the top surface 11 is drooping in a radian to form a portion of an upper surrounding wall 12, the bottom edge of the upper surrounding wall 12 is expanded outward in a circular arc drooping and slightly concaved inward to form a portion of an outer surrounding edge 13, the bottom edge of the outer surrounding edge 13 is in a state of being concaved inward, namely reversely expanded outward, so that a portion of an inner concave arc 14 is formed, and then the bottom edge of the inner concave arc 14 is deflected outward to form a portion of a lifting wall 15.

A conventional exquisite paper-plastic cup cover is shown in fig. 4-5, which is a paper-plastic cup cover 1 (the parts belonging to the same structure are the same in the same number, and the same below), and the structure also has a part of a top surface 11, and the top surface 11 is also provided with a drinking opening 111, so as to be convenient for drinking the beverage in the cup body; then the periphery of the top surface 11 is drooped down with a radian to form a portion of an upper surrounding wall 12, the bottom edge of the upper surrounding wall 12 is expanded outward in an arc shape and slightly concaved inward to form a portion of an outer surrounding edge 13, the bottom edge of the outer surrounding edge 13 is in a state of being inwards rotated, namely reversely expanded outward, so as to form a portion of an inner concave arc 14, and then the bottom edge of the inner concave arc 14 is deviated outward to form a portion of an opening wall 15.

The paper-plastic cup cover 1 has a cross-sectional side view as shown in fig. 7 (the paper-plastic cup cover is shown in a simplified form) or an elaborate form, and the paper-plastic cup cover 1 has a cross-sectional side view as shown in fig. 8 when covering the cup mouth of the cup body 2, because the cup mouth of the cup body 2 has an outer flange 21, the optimal relative covering (using) relationship between the paper-plastic cup cover 1 and the cup body 2 is shown in fig. 8, when covering the paper-plastic cup cover 1 on the cup mouth of the cup body 2, the paper-plastic cup cover 1 cannot completely cover at first, so that the outer covering edge 13 on one side of the paper-plastic cup cover 1 must be covered on the outer flange 21 on the corresponding portion of the cup body 2 as much as possible by applying force, and then further applying force to make the other outer covering edges 13 extend outward, i.e. to restore the other corresponding outer flanges 21, the outer flange 21 of the cup body 2 is tightly wrapped by the whole outer flange 13, and at this time, the inner concave arc 14 of the paper-plastic cup cover 1 supports the outer bottom edge of the outer flange 21 due to the slant, so that the covered paper-plastic cup cover 1 is difficult to be lifted upwards, and the wrapping stability between the outer flange 13 and the outer flange 21 is further enhanced. In other words, the paper-plastic cup lid 1 can be completely sealed with the cup body 2 because the paper-plastic cup lid 1 has the functions of the outer covering edge 13 and the inner concave arc 14, wherein the outer covering edge 13 is mainly tightly covered with the outer flange 21 of the cup body 2, and the inner concave arc 14 is capable of being inwardly and obliquely supported on the outer bottom edge of the outer flange 21 of the cup body 2, so that the paper-plastic cup lid 1 is difficult to be lifted upwards.

Fig. 7 and 8 show the paper-plastic cup lid 1, wherein the generation of the concave arc 14 occurs after a processing procedure (i.e. the manufacturing method claimed in the present invention), and therefore before the processing procedure, the paper-plastic cup lid 1 is as shown in fig. 6, and after two continuous processes of (a) pulp-sucking molding by a pulp-sucking mold and (b) hot-press molding by a hot-press mold, the finished product of the paper-plastic cup lid is obtained, as can be seen from fig. 6, the top surface 11, the upper wall 12, the outer wall 13 and the lifting wall 15 are all completely present, and only the concave arc 14 does not occur. Because the direction limitation is generated when the slurry suction mold is opened, the continuous reverse arc portions such as the outer covering edge 13 and the inner concave arc 14 can not be generated at the same time, so that the outer covering edge 13 and the lifting wall 15 can only be manufactured first, and then the inner concave arc 14 is generated through one processing process.

In the prior art, there are also patents in which the "outer rim" is formed by molding and then the "inner arc" is formed, such as taiwan patent TW I430923 and chinese patent CN ZL200910157668.6, "manufacturing method of barb groove for plant fiber molding cup lid". The forming strips of a group of sliding blocks are used for abutting against the surface of the paper-plastic cup cover, the inner part of the paper-plastic cup cover is provided with a concave bearing groove corresponding to the position of the barb groove to be formed by the preparation forming from a ring on an inner die, and then the sliding blocks are pushed to move forwards from outside to inside, so that the surface of the paper-plastic cup cover is retracted into the bearing groove of the inner die along with the profile deformation of the forming strips, thereby forming an annular barb groove (the action is equal to the position of an inner concave arc), and when the Chinese Taiwan patent TWI 430923 and the Chinese patent CN 35 200910157668.6 are implemented, the operation and maintenance of the whole group of sliding blocks are complicated, so that the manufacturing cost is increased.

In addition, there are also known patents in which the "inner concave arc" portion (named as "barb groove" for equivalent action) is formed first, and then the "outer edge" portion is formed, such as taiwan patent No. TW I542755 and chinese patent No. CN ZL201410151021.3 "method and product for manufacturing outer edge of cup lid mold". A group of sliding blocks on an outer die advance to the outer side surface of the outer covering edge to wait, a forming die capable of moving transversely is accommodated in the middle of an inner die, and the inner side surface of the outer covering edge to be formed on the paper-plastic cup cover is extruded from inside to outside by the forward movement of the forming die, so that an annular outer covering edge is formed. However, when the taiwan patent TW I542755 and chinese patent CN ZL201410151021.3 are implemented, a device for preparing a set of sliders is still required, which is complicated in operation and maintenance, and thus the manufacturing cost is still difficult to be greatly reduced.

The above problems clearly remain to be improved.

[ summary of the invention ]

The purpose of the invention is: 1. namely, the manufacturing mold with relatively simple structure and composition is provided for the importance of processing and forming the 'concave arc' on the paper-plastic cup cover. 2. Aiming at the importance of processing and forming the 'concave arc' on the paper-plastic cup cover, a manufacturing method which can be simply achieved is provided. The manufacturing mould is utilized, and the finished product of the paper-plastic cup cover is quickly manufactured according to the manufacturing method.

In order to achieve the above purpose, the invention specially creates a manufacturing mold for forming an inner concave arc on a paper-plastic cup cover, which comprises an upper mold part and a lower mold part, wherein the bottom surface of the upper mold part is inwards concave to form an accommodating space, a ring half groove is arranged on the ring wall at the position close to the bottom surface, and can be used for accommodating a ring rubber ring, and the rubber ring is a flexible elastomer; the lower die part consists of an inner die body, a middle die body and an outer die body, wherein the inner die body is provided with a top surface, the periphery of the inner die body sags in radian to form an upper surrounding wall, the bottom edge of the upper surrounding wall is expanded outwards to form a tip, then the die body slants inwards downwards for a certain distance to form an inner assembly inclined wall, and then the inner assembly inclined wall sags downwards to form an inner assembly vertical wall; the middle die body is provided with a large through hole from top to bottom from the center, the periphery of the middle die body is a first middle assembly vertical wall, then the first middle assembly vertical wall is obliquely cut upwards and outwards for a distance to form a middle assembly inclined wall, the inner diameter of the first middle assembly vertical wall corresponds to the outer diameter of the inner assembly vertical wall, the inclination and the diameter of the middle assembly inclined wall correspond to the inclination and the diameter of the inner assembly inclined wall, therefore, when the inner die body is filled from top to bottom from the large through hole of the middle die body, the inner assembly inclined wall is abutted against the middle assembly inclined wall to stop, and in the process, the inner assembly vertical wall is closely attached to the first middle assembly vertical wall; after the assembly is finished, the top end of the middle assembly inclined wall of the middle die body is aligned with the tip end of the inner die body, and the top end of the middle assembly inclined wall extends outwards to form a small section and then is recessed downwards and inwards to form an arc block, so that the tip end and the arc block extend adjacently; the innermost bottom end of the arc block forms a concave point, and then extends downwards and obliquely to form an oblique abutting surface, and then hangs downwards to form a second middle assembly vertical wall; the middle die body is filled from top to bottom from the large through hole of the outer die body, the second middle assembly vertical wall is closely attached to the outer assembly vertical wall; the outer assembling vertical wall is slightly concave at the position close to the top end to form a bearing micro-groove, then the top surface becomes a top abutting surface, and the bearing micro-groove is positioned at the lowest end of the inclined abutting surface.

The invention simultaneously claims a manufacturing method of the forming concave arc on the paper-plastic cup cover, which comprises a paper-plastic cup cover which is not formed with the concave arc and a manufacturing mould, wherein the paper-plastic cup cover which is not formed with the concave arc is provided with a top surface, the periphery of the top surface is drooped to form an upper surrounding wall, the bottom edge of the upper surrounding wall is expanded outwards to be circular arc drooped and slightly inwards concave to form an outer covering edge, and the outer edge of the outer covering edge is downwards drooped to form a vertical wall and then outwards deviated to form a lifting wall; the manufacturing mould consists of an upper mould part and a lower mould part, wherein the bottom surface of the upper mould part is inwards recessed to form an accommodating space, a ring semi-groove is arranged on the ring wall at a position close to the bottom surface and used for accommodating a ring rubber ring, and the rubber ring is a flexible elastomer; the lower die part consists of an inner die body, a middle die body and an outer die body, wherein the inner die body is provided with a top surface, the periphery of the inner die body sags in radian to form an upper surrounding wall, the bottom edge of the upper surrounding wall is expanded outwards to form a tip, then the die body slants inwards downwards for a certain distance to form an inner assembly inclined wall, and then the inner assembly inclined wall sags downwards to form an inner assembly vertical wall; the middle die body is provided with a large through hole from top to bottom from the center, the periphery of the middle die body is a first middle assembly vertical wall, then the first middle assembly vertical wall is obliquely cut upwards and outwards for a distance to form a middle assembly inclined wall, the inner diameter of the first middle assembly vertical wall corresponds to the outer diameter of the inner assembly vertical wall, the inclination and the diameter of the middle assembly inclined wall correspond to the inclination and the diameter of the inner assembly inclined wall, therefore, when the inner die body is filled from top to bottom from the large through hole of the middle die body, the inner assembly inclined wall is abutted against the middle assembly inclined wall to stop, and in the process, the inner assembly vertical wall is closely attached to the first middle assembly vertical wall; after the assembly is finished, the top end of the middle assembly inclined wall of the middle die body is aligned with the tip end of the inner die body, and the top end of the middle assembly inclined wall extends outwards to form a small section and then is recessed downwards and inwards to form an arc block, so that the tip end and the arc block extend adjacently; the innermost bottom end of the arc block forms a concave point, and then extends downwards and obliquely to form an oblique abutting surface, and then hangs downwards to form a second middle assembly vertical wall; the middle die body is filled from top to bottom from the large through hole of the outer die body, the second middle assembly vertical wall is closely attached to the outer assembly vertical wall; the outer assembling vertical wall is slightly concave inwards at the position close to the top end to form a bearing micro-groove, then the top surface becomes a top abutting surface, and the bearing micro-groove is positioned at the lowest end of the inclined abutting surface; the manufacturing method is to use the manufacturing device to perform the following steps on the paper-plastic cup cover which is not formed with the concave arc:

(1) moving the upper mold part above the lower mold part, and enabling the upper mold part and the lower mold part to be separated by a certain distance, then transversely placing a paper-plastic cup cover which is not formed with an inner concave arc into the gap, and then covering the paper-plastic cup cover which is not formed with the inner concave arc on the lower mold part downwards;

(2) then, the upper die part descends to be close to the paper-plastic cup cover which is not formed with the concave arc, firstly, the rubber ring in the upper die part is abutted to the outer covering edge attached to the arc block, and then under the condition that the upper die part continues to descend, the rubber ring deforms and flashes the arc block and the outer covering edge descends; then the rubber ring is abutted against the vertical wall connected between the outer edge and the lifting wall, and the vertical wall is pressed and pressed immediately to generate a part with an inner concave arc, and the upper die part and the lower die part are relatively close to each other, so that under the combined action of lateral inclined pressing of the half groove and upward pressing of the abutting surface, the rubber ring is deformed inwards to push and shape the inner concave arc;

(3) the upper die part is lifted, the rubber ring can deform to flash the arc block and the part of the outer covering edge to lift and recover in the process, and then the upper die part is lifted to a preset height to stay;

(4) taking the paper-plastic cup cover with the formed concave arc away from the lower die part.

The invention also claims a finished product of the paper-plastic cup cover, which is manufactured by the manufacturing device and the manufacturing method, wherein the paper-plastic cup cover is provided with a part which is formed with an inner concave arc.

The invention has the advantages and beneficial effects that: the invention provides a manufacturing die with relatively simple structure and composition aiming at the importance of processing and forming 'concave arc' on a paper-plastic cup cover. Aiming at the importance of processing and forming the 'concave arc' on the paper-plastic cup cover, a manufacturing method which can be simply achieved is provided. And the manufacturing mould is utilized to quickly process and manufacture the finished product of the paper-plastic cup cover according to the manufacturing method.

[ description of the drawings ]

Fig. 1 is a perspective view of a conventional simple paper-plastic cup lid.

Fig. 2 is a side view of a conventional paper-plastic cup lid of a simple type.

Fig. 3 is a cross-sectional view of a conventional simple paper-plastic cup lid.

Fig. 4 is a perspective view of a prior art fine paper-plastic cup lid.

Fig. 5 is a side view of a prior art fine paper-plastic cup lid.

Fig. 6 is a single side sectional view of a conventional paper-plastic cup lid before forming an inward concave arc.

Fig. 7 is a single side sectional view of a conventional paper-plastic cup lid.

Fig. 8 is a single side cross-sectional view of a conventional paper-plastic cup lid and cup in a relatively closed (in use) configuration.

Fig. 9 is a perspective exploded view of a large part of the manufacturing mold for forming the concave arc according to the present invention.

Fig. 10 is a detailed exploded perspective view of the manufacturing mold for forming the concave arc according to the present invention.

Fig. 11 is a view showing most of the anatomy of a manufacturing mold for forming the concave arcs in the present invention.

Fig. 12-16 are diagrams showing the continuous operation of the manufacturing method for forming the concave arc on the paper-plastic cup cover by using the manufacturing mold.

The numbers in the figures illustrate the following:

top surface 11 drinking spout 111 of paper-plastic cup cover 1

Concave arc 14 of outer edge 13 of upper wall 12

Half-groove 61 of upper mold part 6 of lifting wall 15

Lower die part 7 of bottom 63 of rubber ring 62

Upper wall 712 of top 711 of inner mold body 71

Assembled angled wall 714 in tip 713, assembled upright wall 715

The intermediate die body 72 is assembled with an inclined wall 724 in an arc block 723

First middle assembly upright wall 725 most concave point 726 inclined surface 727

Second middle assembly vertical wall 728 outer mold body 73 abutting surface 736

Mounting wall 738 outside step 737 receives micro-grooves 739

[ detailed description ] embodiments

The invention aims to achieve the purpose of quickly processing and manufacturing the paper-plastic cup cover, and develops a manufacturing mold aiming at the requirement of processing and forming an 'inner concave arc' on the paper-plastic cup cover. Referring to fig. 9 to 11, the manufacturing mold created by the present invention is composed of an upper mold part 6 and a lower mold part 7, wherein the bottom surface of the upper mold part 6 is recessed inward to form a containing space, a ring-shaped half groove 61 is formed near the bottom surface on the ring wall for containing a ring-shaped rubber ring 62, and after the half groove 61 is formed near the bottom surface of the ring wall, the remaining surface body is a ring bottom surface 63; the rubber ring 62 is a flexible elastomer, but the rubber ring 62 with lower elasticity is selected, i.e. the rubber ring 62 can be pressed and slightly deformed, but the deformation degree is not high, and then the rubber ring returns to the original shape after the pressing is removed; the rubber ring 62 is accommodated in the half-groove 61, so that the rubber ring 62 can be easily seen from the bottom surface of the upper mold part 6, and the rubber ring 62 moves synchronously with the upper mold part 6.

The lower mold portion 7 is composed of an inner mold body 71, an intermediate mold body 72 and an outer mold body 73, wherein the inner mold body 71 has a top surface 711, the periphery of which depends downward to form an upper surrounding wall 712, the bottom edge of the upper surrounding wall 712 is outwardly expanded to form a tip 713, and then the mold body is obliquely cut inward a distance to form an inner assembly inclined wall 714, and an inner assembly standing wall 715 is vertically formed by the inner assembly inclined wall 714. A large through hole is formed in the middle of the middle mold body 72 from top to bottom, a first middle assembly vertical wall 725 is formed around the middle mold body 72, then the first middle assembly vertical wall 725 is obliquely cut upwards and outwards for a distance to form a middle assembly inclined wall 724, the inner diameter of the first middle assembly vertical wall 725 corresponds to the outer diameter of the inner assembly vertical wall 715, the inclination and the diameter of the middle assembly inclined wall 724 correspond to the inclination and the diameter of the inner assembly inclined wall 714, therefore, when the inner mold body 71 is filled from top to bottom from the large through hole of the middle mold body 72, the inner assembly inclined wall 714 abuts against the middle assembly inclined wall 724, and in the process, the inner assembly vertical wall 715 is just tightly attached to the first middle assembly vertical wall 725 (as shown in fig. 11); after assembly, the top end of the middle assembled inclined wall 724 of the middle mold body 72 is just aligned with the tip 713 of the inner mold body 71, and the top end of the middle assembled inclined wall 724 extends outwards for a short section and then is recessed downwards and inwards to form an arc block 723, so that the tip 713 is adjacent to the arc block 723 and extends naturally; the innermost bottom end of the arc 723 forms a concave point 726, and then extends an inclined surface 727 obliquely outward and downward, and then hangs down to form a second middle assembly vertical wall 728.

A large through hole is formed in the outer mold body 73 from top to bottom, an outer assembly vertical wall 738 is formed around the outer mold body 73, the inner diameter of the outer assembly vertical wall 738 corresponds to the outer diameter of the second middle assembly vertical wall 728, so that when the middle mold body 72 is filled from top to bottom in the large through hole of the outer mold body 73, the second middle assembly vertical wall 728 is just attached to the outer assembly vertical wall 738 (as shown in fig. 11); the outer assembled vertical wall 738 is slightly recessed near the top end to form a receiving micro-groove 739, and then the top surface becomes a top abutting surface 736 and is outwardly lowered to form a first-level surface 737; after assembly, the receiving channel 739 is located at the lowest end of the abutting surface 727.

The inner mold 71, the middle mold 72 and the outer mold 73 are firmly assembled to form the lower mold 7, and then the lower mold can be firmly placed on a platform, and then the lower mold and the upper mold 6 are used together in the manufacturing process of forming an inner concave arc 14 on the paper-plastic cup cover 1, so that a manufacturing method is derived. Referring to fig. 12 to 16 in sequence, the manufacturing method claimed in the present invention includes the following steps:

1. as shown in fig. 12, the upper mold portion 6 is first lifted by an external power (e.g. a power cylinder, not shown) to be spaced apart from the lower mold portion 7, and then a paper-plastic cup cover 1, which is not yet formed with an inner concave arc 14, is laterally placed into the space, and then the paper-plastic cup cover 1 is covered on the lower mold portion 7 downward as shown in fig. 13. It should be mentioned here that, due to the manufacturing requirement, the sizes of several parts on the lower mold part 7 must have a corresponding relationship with the sizes of corresponding parts on the paper-plastic cup lid 1, and for example, as shown in fig. 13, the parts having a corresponding relationship in size include:

(1) the top surface 11 and the top surface 711 have a corresponding size relationship;

(2) the upper wall 12 and the upper wall 712 have a corresponding dimension relationship;

(3) the combination of the outer shroud 13 and the tip 713 and the arc 723 has a corresponding dimension relationship;

(4) the lifting wall 15 has a corresponding dimension relationship with the inclined surface 727 and the receiving micro-groove 739;

therefore, when the paper-plastic cup lid 1 covers the lower mold portion 7 downward, as can be seen from fig. 13, the top surface 11 of the paper-plastic cup lid 1 is attached to the top surface 711 of the lower mold portion 7, the upper surrounding wall 12 of the paper-plastic cup lid 1 is attached to the upper surrounding wall 712 of the lower mold portion 7, the outer surrounding edge 13 of the paper-plastic cup lid 1 is attached to both the tip 713 and the arc 723 of the lower mold portion 7, the lift wall 15 of the paper-plastic cup lid 1 is attached to the inclined surface 727 of the lower mold portion 7, and the bottom end of the lift wall 15 is just inserted into the receiving micro groove 739 for staying, as can also be seen from fig. 13, since the paper-plastic cup lid 1 is not yet formed with the inner concave arc 14, a hanging wall is connected between the outer surrounding edge 13 and the lift wall 15 on the paper-plastic cup lid 1, that is, and a space exists between the hanging wall and the most concave point 726.

2. As shown in fig. 14, the upper mold portion 6 is driven to descend by an external power and approach the lower mold portion 7, that is, approach the paper-plastic cup lid 1, first the rubber ring 62 in the upper mold portion 6 abuts against the outer edge 13 attached to the arc 723, then the upper mold portion 6 continues to descend, in the process, because the outer edge 13 abuts against the arc 723, a relatively strong shape is formed, and the rubber ring 62 is a flexible elastic body, so that when the upper mold portion 6 continues to descend, the rubber ring 62 deforms itself to flash over the arc 723 and the outer edge 13 to descend and then recover; the rubber ring 62 then abuts against the aforementioned hanging wall connected between the outer edge 13 and the lifting wall 15, because the strength of the hanging wall is lower than that of the rubber ring 62, so the rubber ring 62 immediately pushes the hanging wall to generate the portion of the concave arc 14, and at this time, the upper mold portion 6 and the lower mold portion 7 are relatively closer to each other, for example: the upper mold part 6 can be driven to descend slightly, the lower mold part 7 can be driven to ascend slightly, or the upper mold part 6 can descend and the lower mold part 7 can ascend simultaneously, under the combined action of the lateral inclined pressure of the half groove 61 and the upward pressing of the pressing surface 736, the rubber ring 62 can be deformed slightly inwards to push the inner concave arc 14 to be more formed, and in the process, the upper mold part 6 is further driven to descend to a preset height and stays for a short time to ensure that the inner concave arc 14 is formed. The cup lid 1 is made by mixing paper pulp and/or plant fiber material, and is manufactured by the technology of pulp sucking and shaping by a mould and hot-pressing and shaping, so that the cup lid is plastic, and the concave arc 14 can be shaped and shaped after the rubber ring 62 is deformed and pressed inwards for a period of time.

3. As shown in fig. 15, the upper mold part 6 is lifted by the external power, during which the rubber ring 62 is still deformed to flash over the arc 723 and the outer edge 13, and then recovered, and the upper mold part 6 is lifted to a predetermined height to stop for the next stroke.

4. As shown in fig. 16, the paper-plastic cup lid 1 is removed from the lower mold portion 7, and a manufacturing process is completed. In the action process of taking away the paper-plastic cup cover 1, because the structure of the concave arc 14 is formed on the paper-plastic cup cover 1, when the paper-plastic cup cover 1 is taken away upwards, no matter the paper-plastic cup cover 1 is taken away in a straight direction or in an inclined direction, the concave arc 14 is blocked by the arc block 723, but because the paper-plastic cup cover 1 has the deflectability, the paper-plastic cup cover can flash over the arc block 723 only by slight inclination or bending so as to facilitate the taking away, and the paper-plastic cup cover 1 can be recovered immediately. The action of taking the paper-plastic cup cover 1 off the lower die part 7 can be directly taken off manually or automatically taken off by a mechanical arm.

As described above, the composition of the upper mold part 6 and the lower mold part 7 is the manufacturing mold created by the present invention, and the manufacturing mold having the same structure has not been disclosed or used so far, so that it is novel and inventive. Then, the manufacturing method is applied to quickly form the structure of the concave arc 14 on the paper-plastic cup cover 1, so that the manufacturing method disclosed by the invention is novel and creative. Therefore, the paper-plastic cup cover 1 manufactured by adopting the manufacturing mold and applying the manufacturing method has novelty and creativity.

Claims

1. A paper-plastic cup covers the manufacturing mould of the shaping concave arc, characterized by, it is made up of a upper mould part and lower mould part, the bottom surface of the upper mould part is recessed to offer and form a space of holding inwards, there is a half recess of a ring on the cliff side close to bottom surface, for holding the rubber ring of a ring, the rubber ring is the flexible elastomer; the lower die part consists of an inner die body, a middle die body and an outer die body, wherein the inner die body is provided with a top surface, the periphery of the inner die body sags in radian to form an upper surrounding wall, the bottom edge of the upper surrounding wall is expanded outwards to form a tip, then the die body slants inwards downwards for a certain distance to form an inner assembly inclined wall, and then the inner assembly inclined wall sags downwards to form an inner assembly vertical wall; the middle die body is provided with a large through hole from top to bottom from the center, the periphery of the middle die body is a first middle assembly vertical wall, then the first middle assembly vertical wall is obliquely cut upwards and outwards for a distance to form a middle assembly inclined wall, the inner diameter of the first middle assembly vertical wall corresponds to the outer diameter of the inner assembly vertical wall, the inclination and the diameter of the middle assembly inclined wall correspond to the inclination and the diameter of the inner assembly inclined wall, therefore, when the inner die body is filled from top to bottom from the large through hole of the middle die body, the inner assembly inclined wall is abutted against the middle assembly inclined wall to stop, and in the process, the inner assembly vertical wall is closely attached to the first middle assembly vertical wall; after the assembly is finished, the top end of the middle assembly inclined wall of the middle die body is aligned with the tip end of the inner die body, and the top end of the middle assembly inclined wall extends outwards to form a small section and then is recessed downwards and inwards to form an arc block, so that the tip end and the arc block extend adjacently; the innermost bottom end of the arc block forms a concave point, and then extends downwards and obliquely to form an oblique abutting surface, and then hangs downwards to form a second middle assembly vertical wall; the middle die body is filled from top to bottom from the large through hole of the outer die body, the second middle assembly vertical wall is closely attached to the outer assembly vertical wall; the outer assembling vertical wall is slightly concave at the position close to the top end to form a bearing micro-groove, then the top surface becomes a top abutting surface, and the bearing micro-groove is positioned at the lowest end of the inclined abutting surface.

2. A manufacturing method of an inner concave arc formed on a paper-plastic cup cover is characterized in that: the paper-plastic cup cover without the formed concave arc is provided with a top surface, the periphery of the top surface is drooped to form an upper surrounding wall, the bottom edge of the upper surrounding wall is expanded outwards to be circular-arc drooped and slightly inwards concave to form an outer covering edge, and the outer edge of the outer covering edge is downwards drooped to form a drooped wall and then outwards deviated to form a lifted wall;

the manufacturing mould consists of an upper mould part and a lower mould part, wherein the bottom surface of the upper mould part is inwards recessed to form an accommodating space, a ring semi-groove is arranged on the ring wall at a position close to the bottom surface and used for accommodating a ring rubber ring, and the rubber ring is a flexible elastomer; the lower die part consists of an inner die body, a middle die body and an outer die body, wherein the inner die body is provided with a top surface, the periphery of the inner die body sags in radian to form an upper surrounding wall, the bottom edge of the upper surrounding wall is expanded outwards to form a tip, then the die body slants inwards downwards for a certain distance to form an inner assembly inclined wall, and then the inner assembly inclined wall sags downwards to form an inner assembly vertical wall; the middle die body is provided with a large through hole from top to bottom from the center, the periphery of the middle die body is a first middle assembly vertical wall, then the first middle assembly vertical wall is obliquely cut upwards and outwards for a distance to form a middle assembly inclined wall, the inner diameter of the first middle assembly vertical wall corresponds to the outer diameter of the inner assembly vertical wall, the inclination and the diameter of the middle assembly inclined wall correspond to the inclination and the diameter of the inner assembly inclined wall, therefore, when the inner die body is filled from top to bottom from the large through hole of the middle die body, the inner assembly inclined wall is abutted against the middle assembly inclined wall to stop, and in the process, the inner assembly vertical wall is closely attached to the first middle assembly vertical wall; after the assembly is finished, the top end of the middle assembly inclined wall of the middle die body is aligned with the tip end of the inner die body, and the top end of the middle assembly inclined wall extends outwards to form a small section and then is recessed downwards and inwards to form an arc block, so that the tip end and the arc block extend adjacently; the innermost bottom end of the arc block forms a concave point, and then extends downwards and obliquely to form an oblique abutting surface, and then hangs downwards to form a second middle assembly vertical wall; the middle die body is filled from top to bottom from the large through hole of the outer die body, the second middle assembly vertical wall is closely attached to the outer assembly vertical wall; the outer assembling vertical wall is slightly concave inwards at the position close to the top end to form a bearing micro-groove, then the top surface becomes a top abutting surface, and the bearing micro-groove is positioned at the lowest end of the inclined abutting surface;

the manufacturing method is to use the manufacturing device to perform the following steps on the paper-plastic cup cover which is not formed with the concave arc:

3. A finished product of the paper-plastic cup cover is manufactured by the manufacturing device of claim 1 and the manufacturing method of claim 2, and is characterized in that: the paper-plastic cup cover is provided with a part which is formed with an inner concave arc.