CN112012048A - Net-free drawing die - Google Patents
Net-free drawing die Download PDFInfo
- Publication number
- CN112012048A CN112012048A CN202010755626.9A CN202010755626A CN112012048A CN 112012048 A CN112012048 A CN 112012048A CN 202010755626 A CN202010755626 A CN 202010755626A CN 112012048 A CN112012048 A CN 112012048A
- Authority
- CN
- China
- Prior art keywords
- die
- copper
- bottom plate
- core
- breathable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052802 copper Inorganic materials 0.000 claims abstract description 36
- 239000010949 copper Substances 0.000 claims abstract description 36
- 238000003825 pressing Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 5
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 230000035699 permeability Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
- D21J3/10—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds of hollow bodies
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Paper (AREA)
Abstract
The invention relates to a net-free drawing die, which comprises: the upper die bottom plate is connected with the power device, and the bottom surface of the upper die bottom plate is provided with a die drawing part extending downwards; the lower die core is arranged corresponding to the upper die bottom plate, a pressing groove matched with the die drawing part is formed in the lower die core, and a plurality of exhaust grooves are formed in the wall of the pressing groove; the shape of the breathable copper die is matched with that of the pressing groove, the breathable copper die is provided with a groove matched with the die drawing part, the breathable copper die is fixed in the pressing groove of the lower die core and is made of a copper material, and the breathable copper die is provided with a plurality of air holes which are 30-100 meshes. The air-permeable copper mould has strong air permeability, does not need to be provided with an exhaust hole, can reduce the tensile crack of a product, and improves the yield and the quality.
Description
Technical Field
The invention relates to the technical field of production of molded products, in particular to a netless drawing die of a molded product.
Background
The molding technology is a forming processing technology originated from the plastic industry, and a three-dimensional paper making technology, namely pulp molding, utilizing fiber materials is derived by combining the molding technology with the paper making technology. As an emerging packaging material, the material research of pulp molded products is more and more attracting attention. The processing method of the paper pulp molding product in the prior art mainly realizes the hot-press shaping of the wet paper blank between the convex die and the concave die of the hot-press die, and the processing and the production have the problems that: when processing, need cover one deck metal mesh on the put mould under convex, die at hot pressing design in-process to do benefit to dredging of vapor, avoid the gas explosion can't make qualified product, but because the existence of metal mesh, the product of production easily glues the mould, and the product that production structure is complicated or drawing die angle is high easily causes the drawing crack of product, makes the surface of product and the put mould contact under have coarse net mark.
Disclosure of Invention
The invention aims to provide a net-free drawing die, which has strong air permeability, does not stick a product, can reduce drawing crack and increase the yield.
The scheme adopted by the invention for solving the technical problems is as follows:
a web-less drawing die comprising:
the upper die bottom plate is connected with the power device, and the bottom surface of the upper die bottom plate is provided with a die drawing part extending downwards;
the lower die core is arranged corresponding to the upper die bottom plate, a pressing groove matched with the die drawing part is formed in the lower die core, and a plurality of exhaust grooves are formed in the wall of the pressing groove;
the shape of the breathable copper die is matched with that of the pressing groove, the breathable copper die is provided with a groove matched with the die drawing part, the breathable copper die is fixed in the pressing groove of the lower die core and is made of a copper material, and the breathable copper die is provided with a plurality of air holes which are 30-100 meshes.
Further, the air-permeable copper mold is formed by sintering copper alloy powder.
Furthermore, the device also comprises a pressing frame, and the pressing frame fixes the breathable copper mold on the lower mold core.
Further, still include in the lower mould bottom plate that lower mould mold core bottom is connected, be provided with a plurality of exhaust holes on the lateral wall of lower mould bottom plate, a plurality of exhaust holes with a plurality of air discharge duct one-to-one intercommunication.
Compared with the prior art, the invention has at least the following beneficial effects:
1) the air-permeable copper mould has strong air permeability, does not need to be provided with an exhaust hole and does not need to use a hot pressing mould net, so that the appearance of the produced product is smooth, and the cost is saved;
2) for products with complex structures or high drawing angles, the product is easy to be cracked by using the existing die, but the invention can reduce the cracking and improve the yield and the quality.
Drawings
Fig. 1 is a schematic structural view of a netless drawing die according to an embodiment of the invention.
Detailed Description
The following examples are provided to further illustrate the present invention for better understanding, but the present invention is not limited to the following examples.
Referring to fig. 1, the invention provides a net-free drawing die, which comprises an upper die base plate 1, a lower die core 4, a lower die base plate 6, a pressing frame 2 and a breathable copper die 3. The upper die base plate 1 is connected with a power device, the power device comprises a hydraulic cylinder and the like, and the upper die base plate 1 is driven by the power device to move close to or far away from the lower die core 4. The upper mold bottom plate 1 is provided with a downward extending mold drawing part 10 at the center position, and the shape of the mold drawing part 10 is matched with the shape of a paper-plastic product such as a cup to be pressed and formed. The lower die core 4 and the upper die base plate 1 are arranged correspondingly and are in a separated state, and a pressing groove 40 matched with the die drawing part 10 is arranged in the center of the lower die core 4. For the convenience of air exhaust, a plurality of air exhaust grooves 5 are provided on the groove wall of the pressing groove 40. The lower die bottom plate 6 is fixed on the bottom surface of the lower die core 4, and a plurality of exhaust holes are formed in the side wall of the lower die bottom plate 6 and communicated with the exhaust grooves 5 in a one-to-one correspondence mode in order to further facilitate air flow and exhaust.
The shape of ventilative copper mould 3 and suppression groove 40 shape cooperation and have the recess with drawing die portion 10 adaptation on it, ventilative copper mould 3 is fixed in the suppression groove 40 of lower mould mold core 4, in order to increase the fixed fastness of ventilative copper mould 3, the circumference border of ventilative copper mould 3 is fixed on the top surface of lower mould mold core 4 through compressing tightly frame 2, specifically, the locking screw passes compressing tightly frame 2, ventilative copper mould 3 and lower mould mold core 4 in order to be with three fixed connection. In order to reduce the drawing crack of the product, the air-permeable copper mold 3 is made of a copper material, specifically, the air-permeable copper mold is formed by sintering copper alloy powder at a high temperature, a plurality of air holes are formed in the air-permeable copper mold 3 in the sintering process, the surface of the air holes is smooth, the air holes are 30-100 meshes, and the air holes with the size can not only ensure the air-permeable effect and be beneficial to cleaning, but also ensure the smooth finish of the air-permeable copper mold 3. The invention adopts the air-permeable copper mould 3 to replace the original metal net, thereby not only reducing the punching process, but also reducing the tension crack of the product and improving the product quality for the product with complex structure or high drawing angle.
When the netless drawing die of the embodiment is applied, the upper die base plate 1, the lower die core 4, the lower die base plate 6 and the air-permeable copper die 3 are heated to the temperature required by the process, the upper die base plate 1 and the lower die core 4 are in a separation state in an initial state, and a paper-plastic wet blank to be formed is placed in the groove of the air-permeable copper die 3. And starting the power device, and driving the upper die base plate 1 to move close to the lower die core 4 until the upper die base plate 1 is pressed in the groove of the breathable copper die 3. During the pressing process, the wet blank is gradually dried, and the water vapor generated in the drying process is collected from the exhaust grooves 5 on the peripheral wall of the pressing groove 40 to the bottom of the lower die core 4 and then is exhausted from the exhaust holes on the side of the lower die bottom plate 6.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (4)
1. A netless drawing die, comprising:
the upper die bottom plate is connected with the power device, and the bottom surface of the upper die bottom plate is provided with a die drawing part extending downwards;
the lower die core is arranged corresponding to the upper die bottom plate, a pressing groove matched with the die drawing part is formed in the lower die core, and a plurality of exhaust grooves are formed in the wall of the pressing groove;
the shape of the breathable copper die is matched with that of the pressing groove, the breathable copper die is provided with a groove matched with the die drawing part, the breathable copper die is fixed in the pressing groove of the lower die core and is made of a copper material, and the breathable copper die is provided with a plurality of air holes which are 30-100 meshes.
2. The web-less drawing die of claim 1, wherein the gas-permeable copper die is sintered from a copper alloy powder.
3. The web-less drawing die of claim 1, further comprising a compression border that secures the gas permeable copper mold to the lower mold core.
4. The net-free drawing die of claim 1, further comprising a lower die bottom plate connected to the bottom of the lower die core, wherein a plurality of vent holes are formed in the side wall of the lower die bottom plate, and the vent holes are in one-to-one correspondence communication with the vent grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010755626.9A CN112012048A (en) | 2020-07-31 | 2020-07-31 | Net-free drawing die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010755626.9A CN112012048A (en) | 2020-07-31 | 2020-07-31 | Net-free drawing die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112012048A true CN112012048A (en) | 2020-12-01 |
Family
ID=73498555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010755626.9A Pending CN112012048A (en) | 2020-07-31 | 2020-07-31 | Net-free drawing die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112012048A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06158599A (en) * | 1992-11-09 | 1994-06-07 | Utsui:Kk | Device and method for producing paper formed product |
| JP2000027100A (en) * | 1998-07-10 | 2000-01-25 | Oji Paper Co Ltd | Production for pulp mold product |
| CN2820944Y (en) * | 2005-03-28 | 2006-09-27 | 苏志铭 | Mould cavity device for reducing paper-plastic product extruding residue water content |
| JP2008144284A (en) * | 2006-12-06 | 2008-06-26 | Kinousei Mokushitsu Shinsozai Gijutsu Kenkyu Kumiai | Method for molding paper molded article and forming mold |
| CN201183924Y (en) * | 2008-03-28 | 2009-01-21 | 张夏生 | Paper pulp molding wet billet molding press die apparatus |
| CN105696425A (en) * | 2014-12-12 | 2016-06-22 | 金箭印刷事业有限公司 | Wet paper-plastic forming method and paper-plastic finished product thereof |
| CN205591052U (en) * | 2016-04-20 | 2016-09-21 | 金华市众生纤维制品有限公司 | Paper pulp mechanograph mould |
| CN212560931U (en) * | 2020-07-31 | 2021-02-19 | 广西福斯派环保科技有限公司 | Net-free drawing die |
-
2020
- 2020-07-31 CN CN202010755626.9A patent/CN112012048A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06158599A (en) * | 1992-11-09 | 1994-06-07 | Utsui:Kk | Device and method for producing paper formed product |
| JP2000027100A (en) * | 1998-07-10 | 2000-01-25 | Oji Paper Co Ltd | Production for pulp mold product |
| CN2820944Y (en) * | 2005-03-28 | 2006-09-27 | 苏志铭 | Mould cavity device for reducing paper-plastic product extruding residue water content |
| JP2008144284A (en) * | 2006-12-06 | 2008-06-26 | Kinousei Mokushitsu Shinsozai Gijutsu Kenkyu Kumiai | Method for molding paper molded article and forming mold |
| CN201183924Y (en) * | 2008-03-28 | 2009-01-21 | 张夏生 | Paper pulp molding wet billet molding press die apparatus |
| CN105696425A (en) * | 2014-12-12 | 2016-06-22 | 金箭印刷事业有限公司 | Wet paper-plastic forming method and paper-plastic finished product thereof |
| CN205591052U (en) * | 2016-04-20 | 2016-09-21 | 金华市众生纤维制品有限公司 | Paper pulp mechanograph mould |
| CN212560931U (en) * | 2020-07-31 | 2021-02-19 | 广西福斯派环保科技有限公司 | Net-free drawing die |
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