CN210679431U - Multilayer forming die - Google Patents
Multilayer forming die Download PDFInfo
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- CN210679431U CN210679431U CN201921653576.2U CN201921653576U CN210679431U CN 210679431 U CN210679431 U CN 210679431U CN 201921653576 U CN201921653576 U CN 201921653576U CN 210679431 U CN210679431 U CN 210679431U
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- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 30
- 238000003825 pressing Methods 0.000 claims description 17
- 238000000465 moulding Methods 0.000 claims description 11
- 238000002955 isolation Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 208000002925 dental caries Diseases 0.000 abstract description 2
- 238000010030 laminating Methods 0.000 abstract 2
- 238000005187 foaming Methods 0.000 description 27
- 239000002245 particle Substances 0.000 description 23
- 239000000047 product Substances 0.000 description 18
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 10
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 239000008187 granular material Substances 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229920005983 Infinergy® Polymers 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a multilayer forming die, including the movable mould, cover half and location axle, be provided with multilayer mould between cover half and the movable mould parallelly, every layer of mould periphery runs through the location axle, divide for two upper and lower independent cavitys in every layer of mould through a division board, every layer of mould divide into public mould and master model, the downside of mould has the laminating face, the upside of mould has the face of receiving the pressure, along the laminating face with receive the face and set up the steam hole with the cavity intercommunication uniformly, a plurality of feed ports top-down ground link up the mould, be provided with the cutting board that is used for sealing the feed port in the cavity of resorption of mould, one side of every layer of mould is equipped with the pipe connector, the opposite side is equipped with the second order mode locking hydro-cylinder that is used for controlling the. The multi-layer forming die can simultaneously produce a plurality of products under the same projection area, saves space and improves production efficiency; meanwhile, because every two die cavities are connected to form a coplanar surface, energy consumption waste is very little compared with that of a plurality of independent dies.
Description
Technical Field
The utility model relates to the technical field of mold, especially, relate to a multilayer forming die and through the multilayer forming process of the expanded material that this mould realized.
Background
Foamed materials, such as foamed thermoplastic polyurethane (E-TPU), are widely used in the fields of shoe materials, automotive interiors, etc. because they are lightweight, have good elasticity, and have many advantages such as high abrasion resistance and chemical resistance. At present, most of the preparation processes of the foaming materials rely on a mould to carry out steam mould pressing processing forming on the foaming particles, the foaming materials in the mould need to be pressurized while steam heating is provided, the equipment has a complex structure, large occupied area and high energy consumption, and one equipment can only be used for forming one product, so that the defect of low production efficiency exists.
Therefore, those skilled in the art are dedicated to develop a multi-layer molding die, which can simultaneously mold a plurality of products by combining with a multi-layer molding process of a foaming material, thereby improving the production efficiency.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to realize the purpose of simultaneously forming a plurality of products.
In order to achieve the above object, the present invention provides a multilayer forming mold, comprising a movable mold at the top, a fixed mold at the bottom, and a plurality of positioning shafts connected between the movable mold and the fixed mold, wherein the multilayer mold is arranged in parallel between the fixed mold and the movable mold, the periphery of each layer of mold is penetrated through the positioning shafts, each layer of mold is divided into an upper cavity and a lower cavity by a partition plate, each layer of mold is divided into a male mold and a female mold, wherein the male mold is arranged at the lower side of the mold and has an outwardly convex pressing surface, the female mold is arranged at the upper side of the mold and has an inwardly concave pressure surface, steam holes communicated with the cavities are uniformly arranged along the pressing surface and the pressure surface, a plurality of feeding holes are communicated with the mold from top to bottom, a material cutting plate for sealing the feeding holes is arranged in the lower cavity of the mold, one side of each layer of mold is provided with pipe connectors respectively communicated with the, the other side is provided with a second-order mode locking oil cylinder for controlling the lifting of the mold.
Furthermore, two independent water cooling pipelines are arranged on the upper side and the lower side of the isolation plate, the two water cooling pipelines are respectively responsible for cooling the upper cavity and the lower cavity, the water outlet of the upper cavity is located at the lowest position of the isolation plate, the outer side of the water outlet is connected with a water outlet pipe, and the lower cavity drains water from the steam hole.
Furthermore, the atomizing nozzles facing the cavity are uniformly distributed along the outer side of the water cooling pipeline.
Furthermore, the material cutting plate is pushed by the material cutting cylinder to move back and forth in the horizontal direction, the material cutting cylinder is fixed on the outer side of the cavity, the telescopic rod of the material cutting cylinder penetrates into the cavity to be connected with the material cutting plate, and the size of the material cutting plate is larger than the cross-sectional size of the feeding hole.
Furthermore, in each layer of the middle mold, the oil cylinder of the second-order mold locking oil cylinder is arranged at one side of the mold, and the far end of the telescopic rod is fixed at the same side of the next layer of the mold; and the oil cylinder of the second-order mode locking oil cylinder is arranged at one side of the die, and the far end of the telescopic rod is fixed at the same side of the fixed die.
Further, the tube interface introduces a gas into the cavity through a gas line, the gas comprising steam and high pressure compressed air.
Further, a die spacing sensor is arranged between the two layers of dies.
Furthermore, the upper side of the movable die is connected with a pressing device, and the lower side of the movable die is provided with a male die with a pressing surface.
Further, the upper side of the fixed die is a female die with a pressure receiving surface.
A multi-layer forming process of a foaming material uses the multi-layer forming die and comprises the following steps:
(1) adjusting the interval between an upper die and a lower die to reach a first interval through a second-order mode locking oil cylinder, feeding foaming particles into a gap between the dies along a feeding hole, driving a material cutting plate to seal the feeding hole after the foaming particles are filled, and judging whether steam preheating is needed after the first interval is reached;
(2) the interval between the upper die and the lower die is further reduced by the second-order mode locking oil cylinder to reach a second interval which is smaller than the first interval, so that the dies are completely closed, meanwhile, the pipe interface is connected with a steam source, steam is input according to a required process, the steam is leaked out through the steam holes, the heated surfaces of the foaming particles are slightly melted, and the male die and the female die give pressure to the foaming particles, so that the foaming particles are mutually bonded together, and the forming is realized;
(3) closing the steam source, introducing cooling water into the water cooling pipeline, and performing water cooling shaping on the shaped product;
(4) and after the product is shaped, lifting the male die through a second-order die locking oil cylinder, and taking out the product.
The technical effects are as follows:
the multi-layer forming die is mainly used for a vertical forming machine, and can simultaneously produce a plurality of products under the same projection area, thereby not only saving the occupied area of the whole machine equipment, but also greatly improving the production efficiency; meanwhile, because every two mold cavities are connected to be coplanar, no excessive mold frame wastes heat during heating and cooling, and energy consumption waste is very little compared with that of a plurality of independent molds.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings, so as to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 is a schematic structural view of the multi-layer forming die of the present invention.
Fig. 2 is a schematic view of the internal structure of the mold part of the multilayer molding mold of the present invention.
In the figure, 1 moving die, 2 fixed die, 3 positioning shaft, 4 die, 41 cavity, 42 pipe interface, 43 pressing surface, 44 pressure surface, 45 steam hole, 46 water outlet, 5 feed hole, 6 material cutting plate, 7 material cutting cylinder, 8 second-order mode locking oil cylinder, 81 telescopic rod, 9 die spacing sensor, 10 water cooling pipeline, 11 atomizing nozzle and 12 isolation plate.
Detailed Description
As shown in fig. 1 is the utility model provides a pair of multilayer forming die, including the movable mould 1 that is located the top, be located the cover half 2 of bottom and connect a plurality of location axle 3 between movable mould 1 and cover half 2, be provided with multilayer mould 4 between cover half 2 and the movable mould 1 in parallel, every layer of periphery of mould 4 runs through location axle 3, separates for upper and lower two independent cavitys 41 in every layer of mould 4 through a division board 12, and every layer of mould 4 divide into public mould and master model. The movable die 1 and the fixed die 2 are conventional dies, and preferably, the number of the positioning shafts 3 is set to be two, and the positioning shafts respectively penetrate through four corners of the periphery of the die 4, and the positioning shafts are mainly used for preventing the relative position between every two adjacent layers of the die 4 from changing.
One side of each layer of the die 4 is provided with a pipe interface 42 which is respectively communicated with the upper cavity and the lower cavity, and the pipe interface 42 guides gas into the cavity 41 through a gas pipeline, wherein the gas comprises steam and high-pressure compressed air. The two independent cavities 41 are steam chambers, and steam is conveyed into the steam chambers through steam pipelines during molding and heating; and directly inputting high-pressure compressed air when the cavity needs to be cleaned by delivering high-pressure air after molding.
In each layer of the die 4, the male die is located on the lower side of the die 4 and is provided with an outwardly convex pressing surface 43, the female die is located on the upper side of the die 4 and is provided with an inwardly concave pressing surface 44, steam holes 45 communicated with the cavity 41 are uniformly formed along the pressing surface 43 and the pressing surface 44, the plurality of feed holes 5 penetrate through the die 4 from top to bottom, a material intercepting plate 6 used for sealing the feed holes 5 is arranged in the lower cavity of the die 4, the material intercepting plate 6 is pushed by a material intercepting cylinder 7 to move back and forth in the horizontal direction, the material intercepting cylinder 7 is fixed on the outer side of the cavity 41, a telescopic rod 81 of the material intercepting cylinder 7 penetrates into the cavity 41 to be connected with the material intercepting plate 6, and the size of the material intercepting plate 6 is larger than the size of the section. The material reaches the forming gap between the upper die and the lower die 4 through the feeding hole 5, and as the feeding hole 5 is communicated from top to bottom, the material sequentially fills the forming gap at the lower part and then the forming gap adjacent to the upper part after entering from top to bottom; when the feeding needs to be stopped, the material cutting plate 6 is pushed by the material cutting cylinder 7 to close the feeding hole 5.
And a second-order mode locking oil cylinder 8 for controlling the lifting of the mould 4 is arranged on the other side of each layer of mould 4 relative to the pipe joint 42. Further, for each layer of the middle mold 4, the oil cylinder of the second-order mold locking oil cylinder 8 is arranged at one side of the mold 4, and the far end of the telescopic rod 81 is fixed at the same side of the next layer of the mold 4; for the die 4 positioned at the lowest layer, the oil cylinder of the second-order mode locking oil cylinder 8 is arranged at one side of the die 4, and the far end of the telescopic rod 81 is fixed at the same side of the fixed die 2. The upper side of the movable die 1 is connected with a pressing device, and the lower side of the movable die 1 is a male die with a pressing surface 43. The fixed die 2 is fixed at the bottom of the whole device, and the upper side of the fixed die 2 is a female die with a pressure receiving surface 44. A mold spacing sensor 9 is arranged between the two layers of molds 4 for determining the actual distance between the two molds 4, and is matched with a second-order mold locking oil cylinder, and the two molds are put into use according to actual molding materials and processes, for example, the feeding scheme when the two molds are used for E-TPU molding is as follows: firstly, the distance between the two dies is moved to 1mm, and the dies are closed after feeding is finished.
Two independent water cooling pipelines 10 are arranged on the upper side and the lower side of the partition plate 12, the two water cooling pipelines 10 are respectively responsible for cooling the upper cavity and the lower cavity, the water outlet 46 of the upper cavity is located at the lowest position of the partition plate 12, the outer side of the water outlet 46 is connected with a water outlet pipe, and the lower cavity directly drains water from the steam hole 45. It is also preferred that a control valve is provided at the drain 46 of the upper chamber to close the drain 46 when steam is introduced into the upper chamber to reduce heat loss due to steam outflow. The atomizing nozzles 11 facing the cavity 41 are uniformly distributed along the outer side of the water cooling pipeline 10, and the atomizing nozzles 11 are used for spraying atomized water drops, so that the cooling area can be increased, and the cooling efficiency is improved. The water cooling pipeline 10 can be set to be in a straight pipe or coil pipe form according to the requirements of the forming process on the cooling rate and the cooling area, wherein the coil pipe mode has a larger contact area, and the cooling efficiency can be improved.
A multilayer forming process using the multilayer forming die comprises the following steps:
(1) adjusting the interval between the upper die and the lower die to reach a first interval through a second-order mode locking oil cylinder, feeding the foaming particles into a gap between the dies along the feeding hole, and driving the material cutting plate to seal the feeding hole after the foaming particles are filled;
(2) the interval between the upper die and the lower die is further reduced by the second-order mode locking oil cylinder to reach a second interval which is smaller than the first interval, so that the dies are completely closed, meanwhile, the pipe interface is connected with a steam source, steam is input according to a required process, the steam is leaked out through the steam holes, the heated surfaces of the foaming particles are slightly melted, and the male die and the female die give pressure to the foaming particles, so that the foaming particles are mutually bonded together, and the forming is realized;
(3) after heating is finished, stopping introducing steam, introducing cooling water into a water cooling pipeline, cooling the die and the formed product, and performing water cooling and shaping on the product;
(4) and after the product is shaped, lifting the male die through a second-order die locking oil cylinder, and taking out the product.
Example 1
The embodiment provides an use the utility model discloses a little expanded material compression molding's that multilayer forming die goes on technology, at first drop into raw materials TPU granule in the high-pressure batch autoclave, fill into carbon dioxide, improve pressure and temperature in the batch autoclave gradually, until reaching 15MPa, after 40 ℃, carbon dioxide in the batch autoclave reaches supercritical state, permeate under this state behind 2h with 0.5Mpa/s quick pressure release, then put into foaming equipment with permeating compound granule rapidly and heat the foaming, prepare and obtain foaming TPU granule; then setting a multilayer forming die, adjusting the interval between an upper die and a lower die to 2-3mm through a second-order mode locking oil cylinder, feeding TPU foamed particles along a feeding hole, pushing a material cutting plate through a material cutting cylinder to seal the feeding hole after the TPU foamed particles are filled, reducing the interval between the upper die and the lower die to 1mm or less than 1mm through the second-order mode locking oil cylinder to completely close the dies, introducing steam into an upper cavity and a lower cavity of the dies, permeating the steam into the foamed particles between the dies to slightly melt the surfaces of the foamed particles, and mutually bonding the foamed particles under the action of pressure so as to form the TPU foamed particles; and after the heating is finished, stopping introducing steam, introducing cooling water into the water cooling pipeline to cool the mold and the formed product, shaping the product through water cooling, lifting the mold through the second-order mold locking oil cylinder, and taking out the product after increasing the interval.
Example 2
The embodiment provides the use the utility model discloses a little expanded material compression molding's that multilayer forming die goes on technology, at first drop into raw materials EVA granule in the high-pressure reaction cauldron, fill into carbon dioxide, improve pressure and temperature in the reation kettle gradually, after reaching 20MPa, 50 ℃, carbon dioxide in the reation kettle reaches supercritical state, permeate under this state behind 1.5h with 0.5Mpa/s quick pressure release, then put into foaming equipment with permeating compound granule rapidly and heat the foaming, prepare and obtain foaming EVA granule; then, arranging a multilayer forming die, adjusting the interval between an upper die and a lower die to reach 3mm through a second-order mode locking oil cylinder, feeding TPU (thermoplastic polyurethane) foaming particles along a feeding hole, pushing a material cutting plate through a material cutting cylinder to seal the feeding hole after the TPU foaming particle is filled, reducing the interval between the upper die and the lower die to be 1mm or less than 1mm through the second-order mode locking oil cylinder to completely close the dies, introducing steam into upper and lower cavities of the dies, permeating the steam into the foaming particles between the dies to slightly melt the surfaces of the foaming particles, and mutually bonding the foaming particles under the action of pressure so as to form the TPU foaming particles; and after the heating is finished, stopping introducing steam, introducing cooling water into the water cooling pipeline to cool the mold and the formed product, shaping the product through water cooling, lifting the mold through the second-order mold locking oil cylinder, and taking out the product after increasing the interval.
The multi-layer forming die is mainly used for a vertical forming machine, and can simultaneously produce a plurality of products under the same projection area, thereby not only saving the occupied area of the whole machine equipment, but also greatly improving the production efficiency; meanwhile, because every two mold cavities are connected to be coplanar, no excessive mold frame wastes heat during heating and cooling, and energy consumption waste is very little compared with that of a plurality of independent molds.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. A multi-layer forming die comprises a movable die positioned at the top, a fixed die positioned at the bottom and a plurality of positioning shafts connected between the movable die and the fixed die, it is characterized in that a plurality of layers of moulds are arranged in parallel between the fixed mould and the movable mould, the periphery of each layer of mould is penetrated through by a positioning shaft, each layer of mould is divided into an upper cavity and a lower cavity by a partition plate, each layer of mould is divided into a male mould and a female mould, the male die is located on the lower side of the die and provided with an outwardly convex pressing surface, the female die is located on the upper side of the die and provided with an inwardly concave pressing surface, steam holes communicated with the cavity are uniformly formed in the pressing surface and the pressing surface, the plurality of feeding holes penetrate through the die from top to bottom, a material intercepting plate used for sealing the feeding holes is arranged in the lower cavity of the die, pipe connectors communicated with the upper cavity and the lower cavity are arranged on one side of each layer of the die, and a second-order die locking oil cylinder used for controlling the die to ascend and descend is arranged on the other side of each layer of the die.
2. The multi-layer molding die of claim 1, wherein two independent water cooling pipelines are disposed on the upper and lower sides of the isolation plate, the two water cooling pipelines are respectively responsible for cooling the upper cavity and the lower cavity, the water outlet of the upper cavity is located at the lowest position of the isolation plate, the outer side of the water outlet is connected with a water outlet pipe, and the lower cavity is drained from the steam hole.
3. A multi-level forming die as claimed in claim 2, wherein the spray nozzles are evenly distributed along the outside of the water cooling line towards the cavity.
4. The multi-layer molding die of claim 1, wherein the material intercepting plate is pushed by the material intercepting cylinder to move back and forth in the horizontal direction, the material intercepting cylinder is fixed on the outer side of the cavity, the telescopic rod of the material intercepting cylinder penetrates into the cavity to be connected with the material intercepting plate, and the size of the material intercepting plate is larger than the cross-sectional size of the material inlet hole.
5. The multi-layer forming mold according to claim 1, wherein in each layer of the intermediate mold, the cylinder of the second-order mold-locking cylinder is disposed at one side of the mold, and the distal end of the telescopic rod is fixed at the same side of the next layer of the mold; and the oil cylinder of the second-order mode locking oil cylinder is arranged at one side of the die, and the far end of the telescopic rod is fixed at the same side of the fixed die.
6. The multi-layer molding die of claim 1, wherein the tube interface directs gas into the cavity through a gas line, the gas comprising steam and pressurized compressed air.
7. A multi-level forming die as claimed in claim 1, wherein a die gap sensor is provided between the two levels of the die.
8. The multi-layer molding die of claim 1, wherein a pressing means is attached to an upper side of the movable die, and a male die having a press-fit surface is provided on a lower side of the movable die.
9. The multilayer molding die of claim 1, wherein the upper side of the stationary die is a master die having a pressure receiving surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921653576.2U CN210679431U (en) | 2019-09-30 | 2019-09-30 | Multilayer forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921653576.2U CN210679431U (en) | 2019-09-30 | 2019-09-30 | Multilayer forming die |
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| Publication Number | Publication Date |
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| CN210679431U true CN210679431U (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921653576.2U Active CN210679431U (en) | 2019-09-30 | 2019-09-30 | Multilayer forming die |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114701046A (en) * | 2022-05-05 | 2022-07-05 | 鄂尔多斯应用技术学院 | Preparation equipment and preparation method of ultrahigh-voltage ceramic capacitor |
-
2019
- 2019-09-30 CN CN201921653576.2U patent/CN210679431U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114701046A (en) * | 2022-05-05 | 2022-07-05 | 鄂尔多斯应用技术学院 | Preparation equipment and preparation method of ultrahigh-voltage ceramic capacitor |
| CN114701046B (en) * | 2022-05-05 | 2024-01-26 | 鄂尔多斯应用技术学院 | Preparation equipment and preparation method of ultrahigh-voltage ceramic capacitor |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: NINGBO BOLIWEIGE ENVIRONMENTAL PROTECTION EQUIPMENT TECHNOLOGY CO.,LTD. Assignor: NINGBO GMF TECHNOLOGY Co.,Ltd. Contract record no.: X2021330000684 Denomination of utility model: A multilayer forming die Granted publication date: 20200605 License type: Common License Record date: 20211104 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A multi-layer forming mold Effective date of registration: 20231024 Granted publication date: 20200605 Pledgee: Ningbo Cixi Rural Commercial Bank Co.,Ltd. Pledgor: NINGBO GMF TECHNOLOGY Co.,Ltd. Registration number: Y2023980062406 |