CN112176780A - Device and method for twice in-mold heating forming of high-end pulp molded product - Google Patents
Device and method for twice in-mold heating forming of high-end pulp molded product Download PDFInfo
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- CN112176780A CN112176780A CN202010988684.6A CN202010988684A CN112176780A CN 112176780 A CN112176780 A CN 112176780A CN 202010988684 A CN202010988684 A CN 202010988684A CN 112176780 A CN112176780 A CN 112176780A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J5/00—Manufacture of hollow articles by transferring sheets, produced from fibres suspensions or papier-mâché by suction on wire-net moulds, to couch-moulds
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Abstract
The invention discloses a device and a method for twice in-mold heating molding of a high-end pulp molded product. The device comprises a bottom support plate; a die holder is arranged on the die; the top surface of the lower die base is fixedly connected with a lower clamping plate; the bottom surface of the lower die base is fixedly connected with guide columns distributed in a rectangular array; the peripheral side surface of the guide post is connected with an upper die holder; the bottom surface of the upper die base is fixedly connected with an upper clamping plate; the bottom surface of the upper clamping plate is fixedly connected with a stripper plate. The invention can effectively and rapidly heat the part to be molded of the mold through the specially-made design of the mold and the built-in design of the heating mechanism, and can realize heating in the mold for two times during heating, the heating time can be effectively shortened to 8s-12s through the mode, and the processing efficiency of the device is further effectively improved through the shortening of the time.
Description
Technical Field
The invention belongs to the technical field of paper pulp molding product processing, and particularly relates to a device and a method for twice in-mold heating molding of a high-end paper pulp molding product.
Background
The traditional paper pulp molding process is performed in advance, the process which can be manufactured by direct molding is performed by a pulp suction mold, an extrusion mold, a hot pressing mold, a lower mold and a transfer mold, hot pressing molding is performed firstly, after a product which is manufactured by traditional hot pressing molding is produced, a worker takes the product which is manufactured by one-time hot pressing molding to another machine device, hot pressing molding is performed again by a specially-made mold to meet the needs of customers, the traditional mold is heated through a machine device workbench and then is slowly transferred to a hot pressing upper mold and a hot pressing lower mold, and the heating time of the traditional mold is about 140-180 s.
Generally, the conventional pulp molded product is a normal product in the pulp industry, and the so-called normal molded product is a molded product having a draft angle greater than one degree, and the process in the molded product cannot produce back-off and negative draft, so that the process can be formed in one step, and the product shown in fig. 8 is a product produced by the conventional process. However, with the advancement of science and technology, the times are advanced, and all paper-plastic products cannot meet the condition, for some luxury goods and high-grade electronic products, the technology of the paper-plastic products exceeds that of the traditional pulp molded products, the inner support of the luxury goods has negative draft angles, and the products in the paper-plastic products also have back-off, such as the product shown in fig. 7 has the back-off, the traditional technology cannot draft, the aim of designing by customers is to better protect the products in the luxury goods from being damaged and firmly clamp the products, but the traditional pulp molded products cannot meet the requirements of the customers by one-step molding.
In summary, the conventional mold forming apparatus cannot allow the occurrence of the back-off type process, and at the same time, it cannot generate a negative draft angle during processing, which is not favorable for mold stripping, and thus its practicability is limited.
Disclosure of Invention
The invention aims to provide a device for twice in-mold heating forming of a high-end pulp molded product, which solves the problems of low heating efficiency and low practicability of the existing pulp molded product heating forming device through the design of a female die forming block, a male die forming block and a positioning seat.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a device for twice in-mold heating molding of a high-end pulp molded product, which comprises a bottom supporting plate; the bottom supporting plate is provided with cushion blocks distributed in a rectangular array; the surface of the bottom base plate is connected with a lower die base through a cushion block; the top surface of the lower die base is fixedly connected with a lower clamping plate; the bottom surface of the lower die base is fixedly connected with guide columns distributed in a rectangular array; the peripheral side surface of the guide column is connected with an upper die holder; the bottom surface of the upper die base is fixedly connected with an upper clamping plate; the bottom surface of the upper clamping plate is fixedly connected with a stripper plate; the bottom surface of the upper clamping plate is fixedly connected with an upper die slotting tool; a driving inclined plane is fixedly arranged on the bottom surface of the upper die slotting tool;
longitudinal guide rods which are distributed in a linear array are fixedly connected between the inner surfaces of the lower clamping plates; the peripheral side surface of the longitudinal guide rod is connected with a driven push seat in a sliding way; the driven push seat is provided with a driven inclined plane matched with the driving inclined plane; the peripheral side surfaces of the longitudinal guide rods are sleeved with return springs matched with the driven push seats; the surface of the driven push seat is connected with a female die forming block; the female die forming block is provided with a forming groove; the top surface of the lower splint is fixedly connected with a positioning seat; a heating rod and a thermocouple are fixedly arranged in the positioning seat and the female die forming block; the positioning seat is connected with a male die forming block; and the side surface of the male die forming block is fixedly connected with a forming convex block at a position corresponding to the forming groove.
Preferably, the angles of the driving inclined plane and the driven inclined plane are both 45 degrees; the lower clamping plate is provided with two limiting blocks matched with the driven pushing seat and the upper die slotting tool.
Preferably, the male die forming block is of an L-shaped structure; the position of the positioning seat corresponds to the position of the stripper plate.
Preferably, the upper die base is provided with a connector; the cross section of the longitudinal guide rod is of a T-shaped structure.
Preferably, the circumferential side surfaces of the longitudinal guide rods are fixedly connected with rubber cushion blocks matched with the upper die base.
Preferably, the bottom edge of the female die forming block and the bottom edge of the male die forming block are not on the same straight line; and a forming gap is formed between the bottom edge of the female die forming block and the bottom edge of the male die forming block.
The method for twice in-mold heating forming of the high-end pulp molded product comprises the following steps:
(1) heating by a heating device to finish heating of the male die forming block and the female die forming block;
(2) placing a paper pulp molding wet blank to be processed on a male die molding block of the positioning seat, and aligning the molding inverted buckle side of the semi-finished product with the molding groove;
(3) the during operation upper die base slides downwards, it is fixed after taking off flitch and product pre-contact, go up the mould slotting tool and continue to slide downwards and contact with driven seat that pushes away, drive inclined plane and driven inclined plane contact back, form 45 inclined plane friction dislocation, after the dislocation, trun into the yawing force into by upper and lower vertically power, driven seat that pushes away drive die shaping piece this moment moves ahead to terrace die shaping piece direction along vertical guide bar, move certain position back shaping recess and shaping lug cooperation, accomplish the stoving and the mould shaping work of wet base then, form the back-off.
After the processing is finished, the upper die base moves upwards to return, and the driven push base automatically resets under the action of the reset spring.
The invention has the following beneficial effects:
the invention can effectively and rapidly heat the part to be molded of the mold through the specially-made design of the mold and the built-in design of the heating mechanism, and can realize heating in the mold for drying twice during heating, the heating time can be effectively shortened to 8s-12s through the mode, and the processing efficiency of the device is effectively improved through the shortening of the time, meanwhile, the heating mode of the device does not need to heat other machine equipment, so that the energy consumption of the device can be effectively reduced, and through the design of the upper mold slotting tool, the male mold forming block and the female mold forming block, on one hand, the mold can process a pulp molded product with an inverted buckle process, on the other hand, the finished product can be allowed to generate a negative drawing angle during processing, so that the rapid mold stripping of the finished product is facilitated.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an apparatus for two-time in-mold heating molding of a high-end pulp molded product;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
FIG. 3 is a schematic structural view of an upper die holder, an upper clamping plate, a stripper plate and an upper die slotting cutter;
FIG. 4 is a schematic structural view of a lower clamping plate, a positioning seat and a male die forming block;
FIG. 5 is a schematic view of the structure of FIG. 4 from another angle;
FIG. 6 is an enlarged view of a portion of FIG. 5 at A;
FIG. 7 is a schematic structural diagram of a finished product processed by the device;
fig. 8 is a product prepared by a conventional pulp molding method.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a bottom pallet; 2. cushion blocks; 3. a lower die holder; 4. a lower splint; 5. a guide post; 6. an upper die holder; 7. an upper splint; 8. a material removing plate; 9. inserting a cutter on the upper die; 10. a drive ramp; 11. a longitudinal guide bar; 12. a driven push seat; 13. a driven bevel; 14. a return spring; 15. a female die forming block; 16. forming a groove; 17. positioning seats; 18. a heating rod; 19. a thermocouple; 20. a male die forming block; 21. forming a bump; 22. a limiting block; 23. and a rubber cushion block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the present invention is a device for twice in-mold heating molding of high-end pulp molded product, including a bottom supporting plate 1; the bottom supporting plate 1 is provided with cushion blocks 2 distributed in a rectangular array; the surface of the bottom supporting plate 1 is connected with a lower die holder 3 through a cushion block 2; the top surface of the lower die holder 3 is fixedly connected with a lower clamping plate 4; the bottom surface of the lower die holder 3 is fixedly connected with guide columns 5 which are distributed in a rectangular array; the peripheral side surface of the guide post 5 is connected with an upper die holder 6; the bottom surface of the upper die holder 6 is fixedly connected with an upper clamping plate 7; the bottom surface of the upper clamping plate 7 is fixedly connected with a stripper plate 8; the stripper plate 8 is arranged to limit and compress a product to be processed from the top; when the lifting device is used, the upper die base 6 is connected with external driving equipment through a connecting surface, and then the upper die base 6 is driven to lift;
the bottom surface of the upper clamping plate 7 is fixedly connected with an upper die slotting tool 9; a driving inclined plane 10 is fixedly arranged on the bottom surface of the upper die slotting tool 9; the upper die slotting tool 9 drives the female die forming block 15 to move towards one side of the male die forming block 20 along the direction of the longitudinal guide rod 11 through the driving inclined plane 10;
the surface of the driven push seat 12 is connected with a female die forming block 15; the female die forming block 15 is provided with a forming groove 16; the top surface of the lower splint 4 is fixedly connected with a positioning seat 17; a heating rod 18 and a thermocouple 19 are fixedly arranged in the positioning seat 17 and the female die forming block 15; the thermocouple 19 is used for measuring the temperature of the corresponding position, the thermocouple 19 converts the temperature signal into a thermal electromotive force signal, the thermal electromotive force signal is converted into the temperature of a measured medium through an electric instrument, the temperature is further controlled, and the positioning seat 17 and the female die forming block 15 are heated to dry and heat the forming part of the die;
the positioning seat 17 is connected with a male die forming block 20; and a forming convex block 21 is fixedly connected to the side surface of the male die forming block 20 and corresponds to the position of the forming groove 16.
Further as shown in fig. 1 and 2, the angles of the driving inclined plane 10 and the driven inclined plane 13 are both 45 degrees, and 45-degree inclined plane friction dislocation is formed by designing the driving inclined plane 10 and the driven inclined plane 13 at 45 degrees, and after the dislocation, vertical force is converted into lateral force, so that the female die forming block 15 is driven to displace.
As further shown in fig. 1, the lower clamp plate 4 is provided with two limiting blocks 22 which are matched with the driven pushing seat 12 and the upper die slotting cutter 9, and the limiting blocks 22 are used for limiting the positions of the driven pushing seat 12 and the upper die slotting cutter 9.
Further, the male die forming block 20 is of an L-shaped structure; the position of the positioning seat 17 corresponds to the position of the stripper plate 8.
Further as shown in fig. 1, the upper die holder 6 is provided with a connector, the connector is used for being connected with an external driving device, and the cross section of the longitudinal guide rod 11 is of a T-shaped structure.
As further shown in fig. 1, the circumferential side surfaces of the longitudinal guide rods 11 are fixedly connected with rubber cushion blocks 23 matched with the upper die base 6.
Further, the bottom edge of the female die forming block 15 and the bottom edge of the male die forming block 20 are not on the same straight line; and a forming gap is formed between the bottom edge of the female die forming block 15 and the bottom edge of the male die forming block 20.
When the paper pulp molding machine works, the heating rod 18 is matched with the thermocouple 19, then the heating work of the male die forming block 20 and the female die forming block 15 is completed, a paper pulp molding wet blank to be processed is placed on the male die forming block 20 of the positioning seat 17, when the paper pulp molding wet blank is placed, the bottom surface of a semi-finished product is flush with the positioning seat 17, the inner cavity of the semi-finished product is aligned with the forming groove 16, when the paper pulp molding wet blank is in work, the upper die seat 6 slides downwards, the stripper plate 8 is in pre-contact with a product, after the stripper plate 8 is in pre-contact with the product, the upper die slotting tool 9 continues to slide downwards and is in contact with the driven push seat 12, after the driving inclined surface 10 is in contact with the driven inclined surface 13, 45-degree inclined surface friction dislocation is formed, after the dislocation, the vertical force from top to bottom is converted into lateral force, at the moment, the driven push seat 12 drives the, and then the drying of the wet blank and the molding of the mold are completed. After the upper die holder 6 returns, the driven push seat 12 automatically returns under the action of the return spring 14.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. A device for twice in-mold heating forming of high-end pulp molded products comprises a bottom supporting plate (1); a lower die holder (3) is arranged above the bottom supporting plate (1); the top surface of the lower die holder (3) is fixedly connected with a lower clamping plate (4); a guide post (5) is arranged on the lower die base (3); the upper die holder (6) is in sliding connection with the guide post (5); the bottom surface of the upper die holder (6) is fixedly connected with an upper clamping plate (7); the bottom surface of the upper clamping plate (7) is fixedly connected with a stripper plate (8); an upper mould slotting tool (9) is fixedly connected to the bottom surface of the upper clamping plate (7); go up mould slotting tool (9) bottom surface fixed be provided with drive inclined plane (10), its characterized in that:
the lower clamping plate (4) is provided with a longitudinal guide rod (11); the longitudinal guide rod (11) is connected with a driven push seat (12) in a sliding way; a driven inclined plane (13) matched with the driving inclined plane (10) is arranged on the driven push seat (12); the longitudinal guide rod (11) is sleeved with a return spring (14) matched with the driven push seat (12); the driven push seat (12) is connected with a female die forming block (15); the female die forming block (15) is provided with a forming groove (16); a positioning seat (17) is arranged on the opposite side of the lower splint (4) and the female die forming block (15); heating devices are arranged in the positioning seat (17) and the female die forming block (15); the positioning seat (17) is connected with a male die forming block (20); and the positions of the male die forming block (20) corresponding to the forming grooves (16) are fixedly connected with forming lugs (21).
2. An apparatus for two-time in-mold thermoforming of a high-end pulp molded product according to claim 1, characterized in that the angles of the driving bevel (10) and the driven bevel (13) are both 45 °; the lower clamping plate (4) is provided with two limiting blocks (22) which are matched with the driven pushing seat (12) and the upper die slotting tool (9).
3. The apparatus for twice in-mold heating forming of high-end pulp molded products according to claim 1, characterized in that the male mold forming block (20) is of an L-shaped structure; the position of the positioning seat (17) corresponds to the position of the stripper plate (8).
4. The device for twice in-mold heating forming of the high-end pulp molding product according to the claim 1 is characterized in that the upper mold base (6) is provided with a connector; the number of the longitudinal guide rods (11) is multiple, and the longitudinal guide rods are uniformly distributed on the lower clamping plate (4).
5. The device for twice in-mold heating forming of the high-end pulp molded product according to the claim 1 is characterized in that the peripheral side surfaces of the longitudinal guide rods (11) are fixedly connected with rubber cushion blocks (23) matched with the upper mold base (6).
6. An apparatus for two-shot in-mold heating forming of high-end pulp molded products according to claim 1, characterized in that the heating means comprises a heating rod (18) and a thermocouple (19).
7. A method for twice in-mold heating forming of a high-end pulp molded product comprises the following steps:
(1) the heating device heats to finish the heating of the male die forming block (20) and the female die forming block (15);
(2) placing a paper pulp molding wet blank to be processed on a male die forming block (20) of a positioning seat (17), wherein the forming inverted side of the semi-finished product is aligned with a forming groove (16);
(3) during operation upper die base (6) slides downwards, stripper plate (8) is fixed after pre-contact with the product, go up mould slotting tool (9) and continue to slide downwards and contact with driven saddle (12), drive inclined plane (10) and driven inclined plane (13) after contact, form 45 inclined plane friction dislocation, after the dislocation, turn into the yawing force by upper and lower vertically power, driven saddle (12) drive die shaping piece (15) at this moment advance to terrace die shaping piece (20) direction along vertical guide bar (11), move to certain position back shaping recess (16) and shaping lug (21) cooperation, accomplish the stoving and the mould shaping work of wet base then, form the back-off.
8. Method according to claim 7, characterized in that after the machining, the upper die holder (6) is moved back upwards, automatically returning the driven pusher (12) under the action of the return spring (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010988684.6A CN112176780B (en) | 2020-09-18 | 2020-09-18 | Device and method for twice in-mold heating forming of paper pulp molded product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010988684.6A CN112176780B (en) | 2020-09-18 | 2020-09-18 | Device and method for twice in-mold heating forming of paper pulp molded product |
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| Publication Number | Publication Date |
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| CN112176780A true CN112176780A (en) | 2021-01-05 |
| CN112176780B CN112176780B (en) | 2023-01-17 |
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| CN202010988684.6A Active CN112176780B (en) | 2020-09-18 | 2020-09-18 | Device and method for twice in-mold heating forming of paper pulp molded product |
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| CN203583290U (en) * | 2013-04-27 | 2014-05-07 | 王高原 | Device for manufacturing pulp container end cap with clamping buckle |
| CN206169042U (en) * | 2016-11-15 | 2017-05-17 | 深圳市欣迪盟新能源科技股份有限公司 | Hardware processing side blow mould |
| CN208857601U (en) * | 2018-09-06 | 2019-05-14 | 重庆欧亚绿原包装有限公司 | A kind of paper mould heat setting device |
| CN110629593A (en) * | 2019-09-28 | 2019-12-31 | 东莞市力达科创实业有限公司 | Production process of pulp molded product inverted buckle |
| WO2020016411A1 (en) * | 2018-07-19 | 2020-01-23 | Celwise Ab | A biodegradable, closable container, a method of making such a container, and a biodegradable closable container kit |
| CN110983866A (en) * | 2019-12-10 | 2020-04-10 | 永发（河南）模塑科技发展有限公司 | Negative drawing forming equipment, system and process for pulp molded product |
| CN111206459A (en) * | 2020-01-09 | 2020-05-29 | 广西福斯派环保科技有限公司 | Compression molding device and method for molded product |
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2020
- 2020-09-18 CN CN202010988684.6A patent/CN112176780B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203583290U (en) * | 2013-04-27 | 2014-05-07 | 王高原 | Device for manufacturing pulp container end cap with clamping buckle |
| CN206169042U (en) * | 2016-11-15 | 2017-05-17 | 深圳市欣迪盟新能源科技股份有限公司 | Hardware processing side blow mould |
| WO2020016411A1 (en) * | 2018-07-19 | 2020-01-23 | Celwise Ab | A biodegradable, closable container, a method of making such a container, and a biodegradable closable container kit |
| CN208857601U (en) * | 2018-09-06 | 2019-05-14 | 重庆欧亚绿原包装有限公司 | A kind of paper mould heat setting device |
| CN110629593A (en) * | 2019-09-28 | 2019-12-31 | 东莞市力达科创实业有限公司 | Production process of pulp molded product inverted buckle |
| CN110983866A (en) * | 2019-12-10 | 2020-04-10 | 永发（河南）模塑科技发展有限公司 | Negative drawing forming equipment, system and process for pulp molded product |
| CN111206459A (en) * | 2020-01-09 | 2020-05-29 | 广西福斯派环保科技有限公司 | Compression molding device and method for molded product |
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