CN218540231U - Wet blank secondary transfer type paper pulp moulding forming machine - Google Patents

Abstract

The utility model relates to a device for manufacturing plant fiber products including paper pulp by adopting a molding forming mode. The purpose is to provide a wet blank secondary transfer type pulp molding forming machine, so that good effects can be obtained on both surfaces of a plant fiber molding product. The technical scheme is as follows: the wet blank secondary transfer type pulp molding forming machine comprises a suction filter forming device, a hot-press forming device, a first wet blank transfer device and a second wet blank transfer device; the hot-pressing shaping device can be 1 or more, wherein the hot-pressing shaping devices comprise a left hot-pressing shaping device and a right hot-pressing shaping device.

Description

Wet blank secondary transfer type paper pulp moulding forming machine

Technical Field

The utility model relates to a device for manufacturing plant fiber (paper pulp for short) products including paper pulp by adopting a molding forming mode; is suitable for manufacturing disposable plant fiber molding products, in particular disposable non-planar paper products; such as paper pulp molding delicate packaging products, plant fiber (paper pulp) molding tableware, plant fiber (paper pulp) molding trays, plant fiber (paper pulp) molding industrial product shock pads, packaging boxes and packaging trays, disposable non-planar plant fiber (paper pulp) molding decorative three-dimensional wallboards (or called plant fiber three-dimensional wallpaper or paper pulp molding three-dimensional wallpaper) and all disposable plant fiber (paper pulp) molding products, and the fully automatic plant fiber molding machine comprises a fully automatic paper pulp molding machine.

Background

The manufacturing process of the plant fiber molding product comprises the following steps: the plant fiber is first suction filtered and formed in a suction filter forming device to produce wet blank of the product, the wet blank is fed into a hot pressing mold of a hot pressing and forming device, the hot pressing mold is closed and the wet blank is hot pressed, dried and formed to produce plant fiber molded products in various shapes. And (3) conveying the wet blank from the suction filter forming die to a hot pressing die, and sucking the wet blank from the suction filter forming die by using a wet blank transfer die in a wet blank transfer device to directly convey the wet blank into the hot pressing die of the hot pressing forming device.

Because the thickness of the wet blank is thicker than that of the product after hot-press shaping, the wet blank is easy to crack or wrinkle when entering a hot-press shaping die, and the quality and the qualification rate of the product are influenced.

The hot-pressing die comprises a hot-pressing upper die and a hot-pressing lower die. In order to exhaust the air, the surface of the hot-pressing upper die or the hot-pressing lower die is covered with a metal wire mesh (generally a stainless steel wire mesh). Therefore, when the hot press mold is closed up and down, one surface of the hot press upper mold or one surface of the hot press lower mold is always covered with the wire mesh, which is called as a "mesh surface of the hot press mold", and the other surface is not covered with the wire mesh, which is called as a "smooth surface of the hot press mold". Because the installation of the hot-pressing lower die wire mesh is convenient and the vacuum pumping of steam is convenient, the wire mesh of the hot-pressing die is also generally placed on the hot-pressing lower die. The 'net surface of the hot-pressing die' is suitable for being arranged on a lower die of the hot-pressing die.

The surface of the plant fiber molding product is formed by pressing the mesh surface of the hot pressing mold and the smooth surface of the hot pressing mold. Therefore, the surface of the produced plant fiber molding product, which is contacted with the net surface of the hot pressing mold, is provided with the reticulate pattern, and the other surface is not provided with the reticulate pattern. Respectively referred to as the "web side of the article" and the "smooth side of the article. If the net surface of the hot-pressing die is arranged on the lower die of the hot-pressing die, the produced product also has the structure that the net surface of the product faces downwards and the smooth surface of the product faces upwards.

The wet blank is formed by vacuum suction on a suction filter forming mould with one or more layers of wire mesh (generally stainless steel wire mesh) covered on the surface. The side contacting the suction screen during suction filtration molding is called the "wet-blank screen side". In the process of suction filtration forming, as the thickness of the wet blank increases, the suction force to the slurry is gradually reduced, the material of the wet blank is looser and irregular high-low peak valley surfaces are also formed, so that the surface far away from the suction filter screen (the back surface of the net surface of the wet blank) is called as the rough surface of the wet blank.

Generally, the working surface of the suction filter forming die with a stainless steel wire net as a suction filter screen is upward in the slurry tank for sucking slurry. Therefore, the ' net surface of the wet blank ' is arranged below the wet blank (the net surface of the wet blank faces downwards), and the ' rough surface of the wet blank faces upwards; even if the mold is a turnover type suction filter forming mold, the mold surface faces downwards to suck slurry in the slurry tank, the mold surface is turned upwards after the slurry suction is finished, and then wet blank transfer is carried out. Therefore, the wet blank is produced with the 'net surface of the wet blank' facing downwards and the rough surface of the wet blank facing upwards.

The movement of the wet blank is translation, namely the wet blank is formed in the suction filter forming die and is sent into a hot pressing die of a hot pressing and shaping device, and the orientation of the wet blank cannot be changed. The wet blank is sucked from the suction filter forming die and transferred to a hot pressing die for hot pressing and forming, and the result is that the rough surface of the wet blank corresponds to the smooth surface of the product and the net surface of the wet blank corresponds to the net surface of the product.

So far, the "product smooth surface" of the plant fiber molding product is not smooth, and the "product smooth surface" becomes a worldwide problem in the production of the plant fiber molding product. The "shiny side of the product" is not "shiny" mainly because of the wrinkles and looseness of the "matt side of the wet blank". The smooth surface of the hot-pressing die is difficult to press the rough surface of the wet blank.

The wall thickness of the wet blank is thicker than that of the product, and the wet blank is easy to crack and wrinkle when entering a hot-pressing shaping die, and no effective method exists at present;

regarding the problem of poor smoothness of products, the conventional common solution is to increase the mold clamping force of a hot-pressing mold and inversely adjust the gap of the mold according to the surface effect of the products, so that the gap of the mold is adjusted to be small when the product is not pressed. As a result, even if the mold clamping force of the hot-pressing mold is increased to be large, some parts of the product are pressed to be black and some parts are not pressed to be smooth, and the surface quality of the product is not obviously changed; it is also more troublesome: (1) The clearance of the die is reversely adjusted according to the surface effect of the product, so that great blindness is achieved, and the purpose is often difficult to achieve if the clearance is lost; (2) The cost for adjusting the die clearance is very high, the die clearance is adjusted by shutting down the machine and detaching the die to process the die again, the temperature of the die at about 200 ℃ needs to be reduced to normal temperature, a long time is needed, the heat energy loss is large, the time is too long, and the efficiency is low.

Therefore, the utility model discloses a method solves when hot pressing drying design, and the hot pressing mould is easy to the difficult problem of product fracturing and difficult product surface press polish.

In addition, in the manufacturing process of the plant fiber molding product, if the female die is adopted for pulp suction, the thickness of the bottom wall of the formed wet blank is thicker than that of the upper part, the deeper the product is, the more uneven the thickness of the wall of the wet blank is, the wet blank is easy to be cracked, and finally the produced product has uneven wall thickness and is easy to form cracked waste products; if the male die is adopted for absorbing the slurry, the wall thickness of a wet blank of a deep product can be uniform, but when the wet blank moves into the hot-pressing shaping device, the hot-pressing lower die also needs to correspond to the male die, and when the deep product is produced, if the hot-pressing lower die is the male die, the product is not easy to demould.

In the industry, the uniform wall thickness of the product and easy demoulding are the two difficult choices. Therefore, a method for solving the problem is also needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome above-mentioned background art not enough, provide a wet base secondary transfer formula paper pulp molding machine for two faces of plant fiber molding product all obtain better effect.

The inventor finds through years of research and practice that (1) the defects of the background technology can be obviously improved by carrying out secondary pre-pressing shaping on the wet blank; (2) During hot-pressing and shaping, the mesh surface of the wet blank is easily polished by the smooth surface of the hot-pressing die, and the smooth surface of the produced product is smooth; the rough surface of the wet blank is also easily pressed to form the reticulate pattern by the mesh surface of the hot pressing die, and both surfaces are ideal.

The concrete thinking of the utility model is as follows:

1, among the prior art, wet base transfer device only has one, the utility model discloses a two wet base transfer devices, first wet base transfer device and the wet base transfer device of second promptly. When transferring the wet blank, two wet blank transferring devices are adopted, and the wet blank can be pre-shaped for 2 times;

and 2, turning the wet blank by 180 degrees, pressing the smooth surface of the hot pressing die on the net surface of the wet blank, and pressing the net surface of the hot pressing die on the rough surface of the wet blank, which is flexible and easy to press on the whole surface of the wet blank, so that the surface of the product can be smooth and clean easily. Firstly, moving the wet blank out of a suction filter forming die, turning the wet blank for 180 degrees after the wet blank leaves the suction filter forming die and before the wet blank is sent into a hot-pressing forming die, and then sending the wet blank into the hot-pressing die for hot-pressing drying and forming;

3, only by adopting two wet blank transfer die devices, the smooth surface of the hot pressing die can be really pressed on the mesh surface of the wet blank after the wet blank is turned over for 180 degrees through wet blank exchange between the two wet blank transfer die devices.

The utility model provides a technical scheme is:

the wet blank secondary transfer type pulp molding forming machine comprises a suction filter forming device, a hot-pressing forming device, a first wet blank transfer device and a second wet blank transfer device;

the hot-pressing shaping device can be 1 or more, wherein the hot-pressing shaping devices comprise a left hot-pressing shaping device and a right hot-pressing shaping device.

The first wet blank transfer device comprises a first wet blank transfer die capable of moving up and down, the first wet blank transfer die can extract wet blanks from the suction filter forming die, and the second wet blank transfer device can horizontally move along the left and right translation rails to receive the wet blanks transferred from the first wet blank transfer die and transfer the wet blanks to the hot-pressing forming device; the left and right translation tracks are fixedly arranged along the left and right directions of the upper frame or the lower frame.

The hot-pressing shaping device comprises a hot-pressing lower die capable of moving up and down, and a left translation rail and a right translation rail for the second wet blank transfer die to move horizontally extend to two sides of the hot-pressing shaping device, so that the second wet blank transfer die can move above the hot-pressing lower die, and the hot-pressing lower die is favorable for extracting the wet blank from the second wet blank transfer die;

the number of the hot pressing lower dies can be 1 or more, wherein the plurality of hot pressing lower dies comprise a left hot pressing lower die and a right hot pressing lower die.

The hot-pressing shaping device comprises a hot-pressing upper die capable of moving up and down, and a left translation rail and a right translation rail for the second wet blank transfer die to move horizontally extend to two sides of the hot-pressing shaping device, so that the second wet blank transfer die can move below the hot-pressing upper die, and the hot-pressing upper die is favorable for extracting the wet blank from the second wet blank transfer die;

the number of the hot-pressing upper dies can be 1 or more, wherein the plurality of hot-pressing upper dies comprise a left hot-pressing upper die and a right hot-pressing upper die.

The second wet blank transfer device is provided with a second wet blank transfer die capable of turning 180 degrees, so that the wet blank from the first wet blank transfer die can be turned 180 degrees up and down.

The second wet blank transfer device comprises a second wet blank transfer die which can overturn 180 degrees up and down around the rotating shaft and move horizontally along the left-right translation track so as to receive the wet blank transferred from the first wet blank transfer die, then the wet blank is overturned 180 degrees up and down and then is transferred to the upper part of the lower hot-pressing die, and the lower hot-pressing die which can move up and down extracts the overturned wet blank from the second wet blank transfer die.

The horizontal driver of the second wet blank transfer device is in a gear and rack driving structure, the horizontal driver of the second wet blank transfer device comprises a rack fixed on the upper rack or the lower rack and a gear power head fixed on the second wet blank transfer device, the gear power head comprises a gear and a servo motor for driving the gear to rotate, the gear of the gear power head is meshed with the rack, and the servo motor drives the gear to rotate so as to drive the second wet blank transfer device to horizontally move left and right; or the linear motor is used for driving the second wet blank transfer device to horizontally move, a rotor of the linear motor is fixed on the second wet blank transfer device, and a stator of the linear motor is fixed on the upper frame or the lower frame; or the second wet blank transfer device is driven to horizontally move by a screw nut pair mechanism.

The utility model discloses a theory of operation is: when the wet blank is transferred, two wet blank transfer die devices are adopted, so that the flexibility of wet blank treatment is greatly increased, and secondary pre-shaping of the wet blank is realized; the wet blank is subjected to fine adjustment and shaping, so that the wet blank is more suitable for a cavity gap of a hot-pressing mold, and the probability of fracturing and crumpling of a product is reduced; moreover, only through wet blank exchange between the two wet blank transfer die devices, the smooth surface of the hot pressing die can be really pressed on the net surface of the wet blank after the wet blank is turned over by 180 degrees;

and (4) turning the wet blank leaving the suction filter forming die by 180 degrees up and down, and then sending the wet blank into a hot-pressing forming device for hot-pressing, drying and forming. The smooth surface of the hot pressing die presses the net surface of the wet blank with compact, smooth and high quality, and the net surface of the hot pressing die which is flexible and easy to press the whole surface of the wet blank presses the rough surface of the wet blank. The smooth surface of the hot-pressing mould can press the product to be very smooth, and the rough surface of the wet blank is easily pressed to form a compact reticulate pattern by the mesh surface of the hot-pressing mould. Therefore, good processing effect is obtained on both sides of the product, and double-side optimization is realized.

The utility model has the advantages that:

1. the secondary prepressing of the wet blank reduces the probability of the product being pressed and crumpled;

2. and (4) conveying the wet blank turned by 180 degrees to a hot-pressing shaping device for hot-pressing, drying and shaping. The smooth surface of the hot pressing die is pressed to form the net surface of the wet blank with compact, smooth and high quality, the net surface of the hot pressing die is pressed to form the rough surface of the wet blank, the net surface of the hot pressing die is flexible, the rough surface of the wet blank is pressed easily, good processing effects are achieved on two surfaces of a product, and double-sided optimization is achieved.

3. The beneficial effects that the male die can be adopted for sucking the slurry in the suction filter forming die, and the female die of the hot-pressing forming device is used for hot-pressing the lower die are achieved. The wall thickness of the wet blank of the deep product is uniform, and hot-pressing and demoulding are easy. The ideal process effects of uniform wall thickness of the product, easy demoulding and difficult crack generation of the product are realized;

4. the double wet blank transfer device is adopted, so that the production difficulty of paper pulp molding products, particularly high-quality delicate industrial packaging products, is reduced. Greatly improves the quality of products and the stability of machine operation, and can greatly reduce the production cost.

Drawings

Fig. 1 is a schematic view of a structure of a "wet blank secondary transfer type pulp molding machine" in embodiment 1 in which a left and right translation rail 8 is fixed to a lower frame (a schematic view of a state in which a second wet blank transfer device 5 is located below a first wet blank transfer die 7a and a working surface 5M of the second wet blank transfer die faces upward).

FIG. 1base:Sub>A isbase:Sub>A schematic sectional view taken along line A-A of FIG. 1.

Fig. 1.1 is a schematic view of the structure of the "wet blank secondary transfer type pulp molding machine" in embodiment 1, in which the left and right translation rails 8 are fixed on the upper frame (the second wet blank transfer device 5 is located below the first wet blank transfer die 7a, and the working surface 5M of the second wet blank transfer die faces upward).

FIG. 1.1a is a schematic sectional view of the structure of FIG. 1.1 taken along line B-B.

Fig. 1.1b is a partially enlarged schematic view of the second wet blank transfer device 5 and the second wet blank transfer device horizontal driver 6 of embodiment 1 of the "wet blank secondary transfer type pulp molding machine" of the present invention in which the left and right translation rails 8 are fixed to the upper frame.

Fig. 2 is a schematic structural view of a "wet green secondary transfer type pulp molding machine" in embodiment 1 in which the left and right translation rails 8 are fixed to the lower frame (the second wet green transfer device 5 is located below the first wet green transfer die 7a, and a state of the second wet green transfer die 5a is turned over).

Fig. 2.1 is a schematic front view of embodiment 1 of the "wet blank secondary transfer type pulp molding machine" in which the left and right translation rails 8 are fixed on the upper frame (the second wet blank transfer device 5 is located below the first wet blank transfer die 7a, and the second wet blank transfer die 5a is in a state of turning over).

Fig. 3 is a schematic structural view of the "wet blank secondary transfer type pulp molding machine" embodiment 1 in which the left and right translation rails 8 are fixed on the lower frame (the second wet blank transfer device 5 is located below the first wet blank transfer die 7a, and the working surface 5M of the second wet blank transfer die faces downward).

Fig. 3.1 is a schematic structural view of a "wet blank secondary transfer type pulp molding machine" embodiment 1 in which the left and right translation rails 8 are fixed on the upper frame (a schematic structural view of a state when the second wet blank transfer device 5 is located below the first wet blank transfer die 7a and the working surface 5M of the second wet blank transfer die faces downward).

Fig. 4 is a schematic view of the structure of the left and right translation rails 8 of embodiment 1 of the "wet blank secondary transfer type pulp molding machine" fixed on the lower frame of the present invention (a schematic view of the state when the second wet blank transfer device 5 with the second wet blank transfer mold working surface 5M facing downward moves to the upper side of the left lower hot pressing mold 3 Lc).

Fig. 4.1 is a schematic view of the structure of the "wet billet secondary transfer type pulp molding machine" in embodiment 1 in which the left and right translation rails 8 are fixed on the upper frame (a schematic view of the state when the second wet billet transfer device 5 with the second wet billet transfer mold working surface 5M facing downward moves above the left hot pressing lower mold 3 Lc).

Fig. 5 is a schematic structural view of a "wet blank secondary transfer type pulp molding machine" in embodiment 1, in which the left and right translation rails 8 of the present invention are fixed to the lower frame. The figure shows the horizontal movement driving mode of the second wet blank transfer device 5, and the servo motor drives the gear rack to drive the second wet blank transfer device 5 to move horizontally.

Fig. 6 is a schematic structural view of a wet mat secondary transfer type pulp molding machine according to embodiment 1 of the present invention, in which the structure of the upper frame 1b is changed according to the height change of the hot press molding device and the first wet mat transfer device.

Fig. 7 is a schematic front view of embodiment 2 of the "wet green secondary transfer type pulp molding machine" of the present invention in which the left and right translation rails 8 are fixed to the lower frame (the second wet green transfer device 5 is located below the first wet green transfer mold 7a, and the second wet green transfer mold 5a is turned over).

Fig. 7.1 a schematic front view of the "wet blank secondary transfer type pulp molding machine" embodiment 2 of the present invention, in which the left and right translation rails 8 are fixed to the upper frame (a schematic state when the second wet blank transfer device 5 is located below the first wet blank transfer die 7a and the second wet blank transfer die 5a is turned over).

Fig. 8 is a schematic front view of embodiment 3 of the "wet green secondary transfer type pulp molding machine" in which the left and right translation rails 8 of the present invention are fixed to the lower frame (a schematic state in which the second wet green transfer device 5 is located below the first wet green transfer mold 7 a).

Fig. 9 is a schematic sectional view along line C-C of fig. 8.

Fig. 10 is a schematic front view of embodiment 3 of the "wet blank secondary transfer type pulp molding machine" in which the left and right translation rails 8 are fixed to the lower frame of the present invention (a schematic state view when the second wet blank transfer device 5 is located below the left hot-pressing upper mold 3 La).

Fig. 11 is a schematic front view of embodiment 3 of the "wet green secondary transfer type pulp molding machine" in which the left and right translation rails 8 of the present invention are fixed to the upper frame (a schematic state in which the second wet green transfer device 5 is located below the first wet green transfer mold 7 a).

Fig. 12 is a schematic sectional view of the structure of fig. 11 taken along line D-D.

Fig. 13 is a schematic front view of embodiment 4 of the "wet green secondary transfer type pulp molding machine" in which the left and right translation rails 8 of the present invention are fixed to the lower frame (a schematic state in which the second wet green transfer device 5 is located below the first wet green transfer mold 7 a).

Fig. 14 is a schematic front view showing a structure of a "wet mat secondary transfer type pulp molding machine" embodiment 4 in which the right and left translation rails 8 are fixed to the upper frame (a schematic state in which the second wet mat transfer device 5 is located below the first wet mat transfer mold 7 a).

The reference numbers in the figures illustrate:

1-a frame; 1 a-lower frame; 1 b-mounting on a frame; 1 c-a pull rod; 2-suction filtration forming device; 2 a-suction filtration forming die; 2 b-suction filtration forming slurry tank; 3-hot pressing and shaping device (hot pressing and die assembly device); 3L-a left hot-pressing shaping device (a left hot-pressing mold closing device); 3R-a right hot-pressing shaping device (a right hot-pressing mold closing device); 3.1-hot pressing station; 3 L.1-left hot pressing station; 3 R.1-right hot pressing station; 3 a-hot pressing an upper die; 3 La-left hot-pressing upper die; 3 Ra-right hot pressing upper die; 3 f-a hot-pressing lower die driving device; 3 Lf-a left hot-pressing lower die driving device; 3 Rf-right hot pressing lower die driving device; 3 c-hot pressing the lower die; 3 Lc-left hot pressing lower die; 3 Rc-right hot pressing lower die; 3 b-a hot-pressing upper die driving device; 3 Lb-left upper hot-pressing die driving device; 3 Rb-a right hot-pressing upper die driving device; 5-a second wet blank transfer device; 5.1-a rotating shaft; 5 a-a second wet blank transfer mold; 5 b-a wet blank turning driver; 5 c-a second wet blank moving rack; 5M, a second wet blank transfer die working surface; 6-a second wet blank transfer device horizontal drive; 6 a-gear power head; 6 b-a rack; 7-a first wet blank transfer device; 7 a-a first wet blank transfer mold; 7 b-a first wet blank transfer device driver; 8-left and right translation track; 9-left and right translation track slide block;

the hot press forming device 3 may be 1 or more (including the left hot press forming device 3L and the right hot press forming device 3R), the lower hot press die 3c may be 1 or more (including the left lower hot press die 3Lc and the right lower hot press die 3 Rc), and the upper hot press die 3a may be 1 or more (including the left upper hot press die 3La and the right upper hot press die 3 Ra).

Detailed Description

The wet blank secondary transfer type pulp molding forming machine comprises a frame, a suction filter forming device, a hot-press forming device, a first wet blank transfer device, a second wet blank transfer device, a control system (the prior art can be used) and the like. The wet blank is manufactured in the suction filter forming device, the manufactured wet blank is transferred to a first wet blank transfer device capable of moving up and down, then the first wet blank transfer device transfers the wet blank to a second wet blank transfer device capable of moving horizontally, the second wet blank transfer device transfers the wet blank to a hot-pressing forming device, a lower hot-pressing die capable of moving up and down moves up, and the wet blank is extracted from a second wet blank transfer die 5 a; or, the upper hot-pressing die 3a capable of moving up and down moves down to the second wet blank transfer die 5a to extract the wet blank; after the second wet blank transfer mold 5a returns to the lower side of the first wet blank transfer mold 7a along the left and right translation rails 8, the hot-pressing upper mold 3a (including the left hot-pressing upper mold 3La and the right hot-pressing upper mold 3 Ra) and the hot-pressing lower mold 3c (including the left hot-pressing lower mold 3Lc and the right hot-pressing lower mold 3 Rc) are closed to carry out hot-pressing drying and shaping on the wet blank, and the pulp molded product after hot-pressing drying and shaping is timely sent out of the pulp molding machine at a proper time. In the whole production process of the paper pulp molding product, a wet blank made by a suction filter molding die 2a in a suction filter molding device is taken away by a first wet blank transfer die 7a in a first wet blank transfer device and is sent to a second wet blank transfer die 5a in a second wet blank transfer device, the wet blank can be pre-shaped by the transfer between the first wet blank transfer die 7a and the second wet blank transfer die 5a, and the wet blank can be pre-shaped by extracting the wet blank from the second wet blank transfer die 5a by a hot-pressing shaping device (comprising a left hot-pressing shaping device and a right hot-pressing shaping device) once again, so that the probability of fracturing and creasing the wet blank during hot-pressing and die assembly is reduced; the yield of the product is improved;

the second wet blank transfer mold in the second wet blank transfer device can have a turning function, the second wet blank transfer mold can adsorb the wet blank and turn the wet blank 180 degrees up and down, the second wet blank transfer mold drives the wet blank to turn 180 degrees up and down, then the wet blank is inverted, the net surface of the wet blank faces upwards, the wet blank with the net surface upwards is transferred to a hot-pressing shaping device for hot-pressing, drying and shaping, the wet blank (the net surface of the wet blank) with the net surface upwards is pressed by a hot-pressing upper mold (the smooth surface of the hot-pressing mold) as a smooth surface, a paper pulp molded product after drying and shaping is manufactured, and both surfaces of the product can obtain good processing effects.

The number of the hot-press forming devices can be 1 or more (such as a double hot-press forming device comprising a left hot-press forming device 3L and a right hot-press forming device 3R); overturn 180 degrees from top to bottom, indicate that upset mould working face 5M converts down by converting up, perhaps converts up by converting down.

The extraction is realized by transferring a wet blank or a semi-finished product into another component by a certain component in a negative pressure adsorption mode; is the prior art.

The method for manufacturing the pulp molding product and the wet blank secondary transfer type pulp molding machine can have various implementation modes according to different numbers of the hot-pressing forming devices and different transfer modes of transferring the wet blank to the hot-pressing forming devices after turning, and the specific description is as follows:

example 1

As shown in fig. 1 and fig. 1.1, in this embodiment, the wet-base secondary transfer type pulp molding machine includes a frame, a suction filter molding device, a hot-press molding device, a first wet-base transfer device, a second wet-base transfer device, a control system, and the like. A suction filter forming device 2 is arranged in the middle of the lower frame 1a, a first wet blank transfer device 7 is arranged in the middle of the upper frame and above the suction filter forming device 2, and a hot-press forming device 3, namely a left hot-press forming device 3L and a right hot-press forming device 3R, is respectively arranged at the left side and the right side of the frame.

As shown in fig. 1 and 1.1, the frame 1 is composed of a lower frame 1a, an upper frame 1b, and a pull rod 1c, wherein the pull rod 1c fixes the lower frame 1a and the upper frame 1b together. As shown in fig. 6, the structure of the upper frame 1b may be changed according to the height change of the hot press molding device and the first wet blank transfer device.

The suction filtration forming device 2 comprises a suction filtration forming die 2a and a suction filtration forming slurry tank 2b; the mixture of plant fiber and water (referred to as slurry) with proper concentration is intermittently or continuously injected into the suction filter forming slurry tank 2b, the suction filter forming mold 2a forms the slurry into wet blank, and the wet blank can be manufactured by adopting various modes.

As shown in fig. 1 and 1.1, the hot press forming device 3 includes a left hot press forming device 3L and a right hot press forming device 3R, and the hot press forming device includes a hot press forming mold. The left hot-pressing shaping device 3L comprises a left hot-pressing lower die 3Lc which can move up and down, a left hot-pressing upper die 3La and a left hot-pressing lower die driving device 3Lf which are fixed on the upper frame, and the left hot-pressing lower die 3Lc can move up and down under the driving of the left hot-pressing lower die driving device 3 Lf; the right hot-pressing shaping device 3R comprises a right hot-pressing lower die 3Rc capable of moving up and down, a right hot-pressing upper die 3Ra fixed on the upper frame and a right hot-pressing lower die driving device 3Rf, and the right hot-pressing lower die 3Rc can move up and down under the driving of the right hot-pressing lower die driving device 3 Rf;

the left hot-pressing lower die 3Lc and the right hot-pressing lower die 3Rc are collectively called a hot-pressing lower die 3c, and the left hot-pressing upper die 3La and the right hot-pressing upper die 3Ra are collectively called a hot-pressing upper die 3a; the left lower hot press die 3Lc is engaged with only the left upper hot press die 3La, and the right lower hot press die 3Rc is engaged with only the right upper hot press die 3 Ra.

The first wet blank transfer device 7 comprises a first wet blank transfer die 7a, a first wet blank transfer device driver 7b. The suction filter forming die 2a in the suction filter forming device 2 is used for manufacturing the fiber in the slurry into a wet blank, the first wet blank transfer die 7a is used for sucking the wet blank from the suction filter forming die 2a and lifting the wet blank to a proper position, and then the wet blank is transferred to the second wet blank transfer device 5.

As shown in fig. 1, 1a, 1.1a, the second wet blank transfer device 5 comprises a second wet blank transfer die 5a, a wet blank turning driver 5b, a second wet blank moving rack 5c, a second wet blank transfer device horizontal driver 6; the mold surface of the second wet blank transfer mold 5a for adsorbing the wet blank is a "second wet blank transfer mold working surface" 5M; the second wet blank transfer die can carry the wet blank to turn up and down by 180 degrees under the driving of the wet blank turning driver 5b.

As shown in fig. 1.1, 1.1a and 1.1b, 2 (or 2) left and right translation rails 8 are fixed on the lower side of the upper frame from the left end to the right end, left and right translation rail sliders 9 capable of sliding along the guide rails are arranged on the left and right translation rails 8, the second wet blank transfer device 5 is fixed on the left and right translation rail sliders 9, the second wet blank transfer device 5 is hung upside down on the lower side of the upper frame through the left and right translation rail sliders 9, and can move left and right along the left and right translation rails 8 under the driving of the second wet blank transfer device horizontal driver 6.

As shown in fig. 1 and 1a, 2 (or 2) left and right translation rails 8 from the left end to the right end may be fixed to the lower frame, left and right translation rail sliders 9 slidable along guide rails may be provided on the left and right translation rails 8, and the second wet blank transfer device 5 may be fixed to the left and right translation rail sliders 9 and may be moved left and right along the left and right translation rails 8 by the driving of the second wet blank transfer device horizontal driver 6.

As shown in fig. 1a, 1.1b, 4.1 and 5, driving the second wet blank transfer device 5 to move horizontally is a second wet blank transfer device horizontal driver 6. As a preferential scheme, the second wet blank transfer device horizontal driver 6 adopts a gear and rack driving mode, the second wet blank transfer device horizontal driver 6 comprises a gear power head 6a fixed on the second wet blank transfer device 5 and a rack 6b fixed on the lower frame or the upper frame, the gear power head 6a comprises a gear and a servo motor for driving the gear to rotate, the gear on the gear power head 6a is meshed with the rack 6b, and the servo motor drives the gear to rotate so as to drive the second wet blank transfer device 5 to horizontally move left and right. Or, what drives the second wet blank transfer device 5 to move horizontally is the linear electric motor, the runner of the linear electric motor is fixed on second wet blank transfer device 5, the stator of the linear electric motor is fixed on upper framework or lower framework; or, the second wet blank transfer device 5 is driven to horizontally move in a screw nut pair driving mode;

the left and right translation rails 8 span the left hot pressing and shaping device 3L, the first wet blank transfer device 7 and the right hot pressing and shaping device 3R, and the second wet blank transfer device 5 can move between the upper part of the left hot pressing lower die 3Lc, the lower part of the first wet blank transfer device 7 and the upper part of the right hot pressing lower die 3Rc along the left and right translation rails 8 under the driving of the horizontal driver 6 of the second wet blank transfer device.

The wet blank is manufactured in the suction filter forming device, and the first wet blank transfer die 7a moves downwards to suck the wet blank from the suction filter forming die 2a and moves upwards to a position; the second wet blank transfer die 5a enters the lower part of the first wet blank transfer die 7a along the left and right translation rails 8, and the second wet blank transfer die 5a is turned over by 180 degrees up and down, so that the working surface 5M of the second wet blank transfer die faces upwards, namely the working surface 5M of the second wet blank transfer die faces towards the first wet blank transfer die 7a (as shown in fig. 1 and 1.1); the first wet blank transfer die 7a moves downwards to be matched with the second wet blank transfer die 5a, after the wet blank is transferred to the second wet blank transfer die 5a, the first wet blank transfer die moves upwards to reset, the second wet blank transfer die 5a receives the wet blank, and the working surface 5M of the second wet blank transfer die and the wet blank face upwards; this process allows for pre-shaping of the wet blank.

As shown in fig. 2.1, 3.1, 2 and 3, after the second wet blank transfer die carries the wet blank and turns 180 degrees up and down, the wet blank is inverted, and the working surface 5M of the second wet blank transfer die and the wet blank face down (the net surface of the wet blank faces upward);

as shown in fig. 4.1 and 4, the second wet blank transfer die working surface 5M and the second wet blank transfer die with the wet blank facing downward carry the wet blank to the left above the left lower hot-pressing die in the hot-pressing and shaping device; the first wet blank transfer die 7a moves downwards again to suck the wet blank from the suction filter forming die 2a and moves upwards to a certain position, the left hot pressing lower die 3Lc moves upwards to take the wet blank away from the second wet blank transfer die 5a and then moves downwards to a certain position (the wet blank can be pre-shaped in the process), and the second wet blank transfer die 5a moves back to the lower part of the first wet blank transfer die 7a along the left and right translation rails 8; the second wet blank transfer die 5a is turned over by 180 degrees up and down, the working surface 5M of the second wet blank transfer die faces the first wet blank transfer die 7a again, the first wet blank transfer die 7a moves down, the wet blank is transferred to the second wet blank transfer die 5a and then moves up for resetting, the second wet blank transfer die 5a receives the wet blank again, and meanwhile, the left hot-pressing shaping device closes the die to carry out hot-pressing drying and shaping on the wet blank; the second wet blank transfer die carries the wet blank to turn over 180 degrees up and down, and then the wet blank is inverted, and the working surface 5M of the second wet blank transfer die and the wet blank face down (the net surface of the wet blank faces upwards);

the working surface of the second wet blank transfer die is 5M, and the second wet blank transfer die with the downward wet blank carries the wet blank to move to the right above a right hot pressing lower die in the hot pressing shaping device; the first wet blank transfer die 7a moves downwards again to suck the wet blank from the suction filter forming die 2a and moves upwards to a certain position, the right hot pressing lower die 3Rc moves upwards to take the wet blank away from the second wet blank transfer die 5a and then moves downwards to a certain position (the process can perform pre-shaping on the wet blank), and the second wet blank transfer die 5a moves back to the left below the first wet blank transfer die 7a along the left and right translation rails 8; the second wet blank transfer die 5a is turned over by 180 degrees up and down, the working surface 5M of the second wet blank transfer die faces upwards to the first wet blank transfer die 7a again, the first wet blank transfer die 7a moves downwards, after the wet blank is transferred to the second wet blank transfer die 5a, the first wet blank transfer die moves upwards for resetting, the second wet blank transfer die 5a receives the wet blank, and meanwhile, the right hot-pressing shaping device closes the die to carry out hot-pressing drying and shaping on the wet blank;

the smooth surface of the upper die is hot-pressed to press the net surface of the wet blank, a dried and shaped paper pulp molding product is manufactured, the product is sent out of the paper pulp molding machine, and both surfaces of the product can obtain good processing effect.

As shown in fig. 1.1, 2.1, 3.1, 4.1, 1, 2, 3 and 4, the second wet blank transfer device 5 is provided with a second wet blank transfer die 5a, and the second wet blank transfer die 5a can be turned 180 degrees up and down, preferably, the second wet blank transfer die 5a can be turned 180 degrees up and down around an axis parallel to the horizontal plane, i.e., can be turned 180 degrees up and down around the axis, so as to turn the second wet blank transfer die working surface 5M from up to down. As shown in fig. 1a, 1.1a, the second wet blank transfer mold 5a is driven to turn 180 degrees by a wet blank turning driver 5b. As can be seen from the figure: a rotating shaft 5.1 of the wet blank overturning mold is rotatably positioned on a moving frame 5c of the wet blank overturning device through a bearing, a seat body of a wet blank overturning driver 5b (such as a motor with a speed reducer) is fixed on one side of the moving frame 5c of the wet blank overturning device, and a driving shaft (such as a motor output shaft or a speed reducer output shaft) of the wet blank overturning driver 5b is coaxially connected with the rotating shaft 5.1; obviously, the wet blank overturning driver is started, so that the wet blank overturning mold can be driven to overturn 180 degrees around the rotating shaft 5.1.

The first wet blank transfer device 7 and the second wet blank transfer device 5 jointly realize the function of transferring wet blanks from a suction filter forming die to a hot-pressing forming die, the first wet blank transfer device 7 and the second wet blank transfer device 5 are in action fit, and a left hot-pressing lower die and a right hot-pressing lower die move upwards to take away wet blanks from the second wet blank transfer die 5a and then move downwards to reach the position so as to realize twice pre-shaping of the wet blanks; the 180-degree turnover of the wet blank achieves the purposes of pressing the screen surface of the wet blank with compact, smooth and high-quality materials on the smooth surface of the hot pressing die, so that the screen surface of the hot pressing die which has certain flexibility and is easy to press the whole surface of the wet blank can be pressed on the rough surface of the wet blank, the two surfaces of the product can obtain good processing effect, and double-sided optimization is realized.

The complete implementation of the present embodiment is generally the following:

(1) The second wet blank transfer mold 5a after the wet blank is transferred away moves to the lower part of the first wet blank transfer mold 7a along the left and right translation rails 8; the second wet blank transfer die 5a is turned over by 180 degrees up and down, the working surface 5M of the second wet blank transfer die faces the first wet blank transfer die 7a upwards, the first wet blank transfer die 7a moves downwards to transfer the wet blank to the second wet blank transfer die 5a and then moves upwards for resetting, the second wet blank transfer die 5a receives the wet blank, the second wet blank transfer die 5a carries the wet blank to be turned over by 180 degrees up and down, the working surface 5M of the second wet blank transfer die and the adsorbed wet blank face downwards, and the net surface of the wet blank faces upwards,

(2) The wet blank moves to the left along the left and right translation rails 8 along with the second wet blank transfer mold 5a to the upper part of a left hot pressing lower mold 3Lc which can move up and down; the left lower hot pressing die 3Lc moves up to take the wet blank away from the second wet blank transfer die 5a and then moves down to the right position, and meanwhile, the first wet blank transfer die 7a moves down to the suction filter forming device 2 to suck the wet blank up from the suction filter forming die 2a and then moves up to the right position.

(3) The second wet blank transfer mold 5a after the wet blank is transferred away returns to the lower part of the first wet blank transfer mold 7a along the left and right translation rails 8; the second wet blank transfer die 5a is turned over by 180 degrees up and down, the working surface 5M of the second wet blank transfer die faces the first wet blank transfer die 7a again, the first wet blank transfer die 7a moves down again to transfer the wet blank to the second wet blank transfer die 5a and then moves up to reset, the second wet blank transfer die 5a receives the wet blank again, the second wet blank transfer die 5a carries the wet blank to be turned over by 180 degrees up and down, the working surface 5M of the second wet blank transfer die and the adsorbed wet blank face down, and the net surface of the wet blank faces up,

and simultaneously, the left hot-pressing lower die 3Lc is moved upwards to be matched with the left hot-pressing upper die 3La to carry out hot-pressing drying and shaping on the wet blank, after the hot-pressing drying and shaping, the left hot-pressing die is opened, and the paper pulp molding product is timely sent out of the paper pulp molding machine at a proper time.

(4) The wet blank moves to the right above the right hot pressing lower die 3Rc which can move up and down along with the second wet blank transfer die 5 a; the right lower hot pressing die 3Rc moves up to take the wet blank away from the second wet blank transfer die 5a and then moves down to the position, and simultaneously, the first wet blank transfer die 7a moves down to the suction filter forming device 2 to suck the wet blank from the suction filter forming die 2a and then moves up to the position.

(5) The second wet blank transfer die 5a from which the wet blank is transferred returns to the lower side of the first wet blank transfer die 7 a; the second wet blank transfer die 5a is turned over by 180 degrees up and down, the working surface 5M of the second wet blank transfer die faces the first wet blank transfer die 7a again, the first wet blank transfer die 7a moves down again to transfer the wet blank to the second wet blank transfer die 5a and then moves up to reset, the second wet blank transfer die 5a receives the wet blank again, the second wet blank transfer die 5a carries the wet blank to be turned over by 180 degrees up and down, the working surface 5M of the second wet blank transfer die and the adsorbed wet blank face down, and the net surface of the wet blank faces up,

and simultaneously, the right hot-pressing lower die 3Rc moves upwards to be matched with the right hot-pressing upper die 3Ra to carry out hot-pressing drying and shaping on the wet blank, after the hot-pressing drying and shaping, the right hot-pressing die is opened, and the paper pulp molding product is timely sent out of the paper pulp molding machine at a proper time.

(6) The wet blank moves to the left along the left and right translation rails 8 along with the second wet blank transfer die 5a to the upper part of the left hot pressing lower die 3Lc which can move up and down; the left lower hot pressing die 3Lc moves upwards to take the wet blank away from the second wet blank transfer die 5a and then moves downwards to the position, and meanwhile, the first wet blank transfer die 7a moves downwards to the suction filter forming device 2 to suck the wet blank from the suction filter forming die 2a and then moves upwards to the position;

the wet blank secondary transfer type paper pulp molding machine circularly works according to the steps to continuously produce the paper pulp molding product, and the paper pulp molding product is timely sent out of the paper pulp molding machine.

In the whole production process of the pulp molding product, the wet blank manufactured by the suction filtration molding die 2a is taken away by the first wet blank transfer die 7a and is sent to the second wet blank transfer die 5a, and is turned over by the second wet blank transfer die 5a for 180 degrees up and down (the working surface 5M of the second wet blank transfer die, the adsorbed wet blank face down and the net surface of the wet blank face up) and then is sent to the left hot-pressing shaping device or the right hot-pressing shaping device for hot-pressing, drying and shaping.

Realizing twice shaping of the wet blank; the mesh surface of the wet blank is matched with the smooth surface of the hot-pressing die; the ideal technological effect of uniform wall thickness and easy demoulding of the product can be realized. Greatly improves the running stability of the machine, the quality and the qualification rate of products and greatly reduces the production cost.

Example 2

This example is a simplification of example 1, and as shown in fig. 7.1 and 7, the wet-lap secondary transfer pulp molding machine of this example only includes 1 hot press-molding device. In this embodiment, the wet-base secondary transfer type pulp molding machine includes a frame 1, a suction filter forming device 2, a hot press forming device 3, a second wet-base transfer device 5, a first wet-base transfer device 7, a control system, and the like.

Because only 1 hot pressing setting device exists, the left hot pressing setting device and the right hot pressing setting device are not separated.

A suction filter forming die 2a in the suction filter forming device 2 is used for making fibers in the slurry into wet blanks, and a first wet blank transfer die 7a is used for sucking the wet blanks from the suction filter forming die 2a and lifting the wet blanks to a proper position;

the complete implementation of the present embodiment is generally as follows:

(1) The second wet blank transfer mold 5a after the wet blank is transferred away returns to the lower part of the first wet blank transfer mold 7a along the left and right translation rails 8; the second wet blank transfer die 5a is turned over 180 degrees up and down, the working surface 5M of the second wet blank transfer die faces the first wet blank transfer die 7a upwards, the first wet blank transfer die 7a moves downwards to transfer the wet blank to the second wet blank transfer die 5a and then moves upwards for resetting, the second wet blank transfer die 5a receives the wet blank, the second wet blank transfer die 5a carries the wet blank to turn over 180 degrees up and down, the working surface 5M of the second wet blank transfer die and the adsorbed wet blank face downwards, the net surface of the wet blank faces upwards,

and simultaneously, the hot-pressing lower die 3c moves upwards to be matched with the hot-pressing upper die 3a to carry out hot-pressing drying and shaping on the wet blank received last time, after the hot-pressing drying and shaping, the hot-pressing die is opened, and the paper pulp molding product is timely sent out of the paper pulp molding machine at a proper time.

(2) The second wet blank transfer die 5a with the wet blank facing downwards is moved to the position above the lower hot pressing die 3c which can move up and down again; the lower hot-pressing die 3c moves upwards to take the wet blank away from the second wet blank transfer die 5a and then moves downwards to the position, and meanwhile, the first wet blank transfer die 7a moves downwards to the suction filter forming device 2 to suck the wet blank from the suction filter forming die 2a and then moves upwards to the position.

(3) The second wet blank transfer mold 5a from which the wet blank has been transferred is returned to below the first wet blank transfer mold 7 a; the second wet blank transfer die 5a is turned over by 180 degrees up and down, the working surface 5M of the second wet blank transfer die faces the first wet blank transfer die 7a again, the first wet blank transfer die 7a moves down again to transfer the wet blank to the second wet blank transfer die 5a and then moves up to reset, the second wet blank transfer die 5a receives the wet blank again, the second wet blank transfer die 5a carries the wet blank to be turned over by 180 degrees up and down, the working surface 5M of the second wet blank transfer die and the adsorbed wet blank face down, and the net surface of the wet blank faces up,

and simultaneously, the hot-pressing lower die 3c moves upwards to be matched with the hot-pressing upper die 3a to carry out hot-pressing drying and shaping on the wet blank, after the hot-pressing drying and shaping, the hot-pressing die is opened, and the paper pulp molding product is timely sent out of the paper pulp molding machine at a proper time.

The wet blank secondary transfer type paper pulp molding machine circularly works according to the steps to continuously produce the paper pulp molding product. In the whole production process of the pulp molding product, the wet blank made by the suction filtration molding die 2a is taken away by the first wet blank transfer die 7a and is sent to the second wet blank transfer die 5a, and the wet blank is turned over by 180 degrees up and down by the second wet blank transfer die 5a and then is sent to a hot-pressing shaping device for hot-pressing, drying and shaping.

Example 3

As shown in fig. 8, 9, 11 and 12, the pulp molding machine of this embodiment includes a frame, a suction filter forming device, a hot press forming device, a first wet blank transfer device, a second wet blank transfer device, a control system, and the like. Compared with embodiment 1, the second wet blank transfer mold 5a of the present embodiment is fixed to the second wet blank moving rack 5c without being turned 180 degrees up and down; the upper hot-pressing die 3a (left upper hot-pressing die 3La and right upper hot-pressing die 3 Ra) is movable up and down, and the lower hot-pressing die 3c (left lower hot-pressing die 3Lc and right lower hot-pressing die 3 Rc) is stationary.

The frame 1 is composed of a lower frame 1a, an upper frame 1b and a pull rod 1 c.

The suction filter forming device 2 comprises a suction filter forming die 2a and a suction filter forming slurry tank 2b.

The hot-press shaping device 3 comprises a hot-press shaping die; the hot-pressing upper die 3a can move up and down and the hot-pressing lower die 3c fixed on the lower frame and can move up and down under the drive of the hot-pressing upper die driving device 3 b;

the hot-press shaping device 3 comprises a left hot-press shaping device 3L and a right hot-press shaping device 3R,

the left hot-pressing shaping device 3L comprises a left hot-pressing upper die 3La capable of moving up and down and a left hot-pressing lower die 3Lc fixed on the lower frame and not moving, and the left hot-pressing upper die 3La can move up and down under the drive of the left hot-pressing upper die driving device 3 Lb;

the right hot-pressing setting device 3R includes a right hot-pressing upper die 3Ra which can move up and down and a right hot-pressing lower die 3Rc which is fixed immovably on the lower frame, and the right hot-pressing upper die 3Ra can move up and down under the drive of the right hot-pressing lower die driving device 3 Rb.

The left lower hot pressing die 3Lc and the right lower hot pressing die 3Rc are collectively referred to as a lower hot pressing die 3c, and the left upper hot pressing die 3La and the right upper hot pressing die 3Ra may be an upper hot pressing die 3a.

The first wet mat transfer means 7 comprises a first wet mat transfer die 7a movable up and down, a first wet mat transfer means driver 7b.

The second wet blank transfer device 5 comprises a second wet blank transfer die 5a, a second wet blank moving frame 5c and a second wet blank transfer device horizontal driver 6, wherein the second wet blank transfer die 5a is fixed on the second wet blank moving frame 5c and does not need to be turned over by 180 degrees up and down.

As shown in fig. 11 and 12, 2 (or 2) left and right translation rails 8 are fixed to the lower side of the upper frame from the left end to the right end, left and right translation rail sliders 9 movable along the guide rails are provided on the left and right translation rails 8, the second wet blank transfer device 5 is fixed to the left and right translation rail sliders 9, the second wet blank transfer device 5 is hung upside down on the lower side of the upper frame by the left and right translation rail sliders 9, and is movable left and right along the left and right translation rails 8 by the horizontal driver 6 of the second wet blank transfer device.

As shown in fig. 8 and 9, the left and right translation rails 8 may be fixed to the lower frame, 2 (or 2 sets) of left and right translation rails 8 may be fixed to the lower frame from the left end to the right end, left and right translation rail sliders 9 slidable along the guide rails may be provided on the left and right translation rails 8, and the second wet blank transfer device 5 may be fixed to the left and right translation rail sliders 9 and may be moved left and right along the left and right translation rails 8 by the driving of the second wet blank transfer device horizontal driver 6.

As shown in fig. 8, 9, 11 and 12, a second wet mat transfer unit horizontal driver 6 for driving the second wet mat transfer unit 5 to move horizontally. And a gear and rack driving mode is adopted, the horizontal driver 6 of the second wet blank transfer device comprises a gear power head 6a fixed on the second wet blank transfer device 5 and a rack 6b fixed on the lower rack or the upper rack, the gear power head 6a comprises a gear and a servo motor for driving the gear to rotate, the gear on the gear power head 6a is meshed with the rack 6b, and the servo motor drives the gear to rotate so as to drive the second wet blank transfer device 5 to horizontally move left and right. Or the linear motor is used for driving the second wet blank transfer device 5 to move horizontally, a rotor of the linear motor is fixed on the second wet blank transfer device 5, and a stator of the linear motor is fixed on the upper frame or the lower frame; or a screw-nut pair driving mechanism is used for driving the second wet blank transfer device 5 to horizontally move;

the left and right translation rails 8 span the left hot-pressing shaping device 3L, the first wet blank transfer device 7 and the right hot-pressing shaping device 3R, and the second wet blank transfer device 5 can move between the upper part of the left lower hot-pressing die 3Lc, the lower part of the first wet blank transfer die 7a and the upper part of the right lower hot-pressing die 3Rc along the left and right translation rails 8 under the driving of the horizontal driver 6 of the second wet blank transfer device.

The wet blank is manufactured in the suction filter forming device, and the first wet blank transfer die 7a moves downwards to suck the wet blank from the suction filter forming die 2a and moves upwards to a position; as shown in fig. 8 and 11, when the second wet blank transfer mold 5a enters below the first wet blank transfer mold 7a along the left-right translation rail 8, the first wet blank transfer mold 7a moves down to be closed with the second wet blank transfer mold 5a, and the wet blank is transferred to the second wet blank transfer mold 5a, the first wet blank transfer mold moves up to be reset, and the first wet blank transfer mold 7a moves down to be closed with the second wet blank transfer mold 5a, the wet blank can be pre-shaped.

The second wet blank transfer die 5a receives the wet blank, and as shown in fig. 10, the second wet blank transfer die 5a carries the wet blank to move below the left hot-pressing upper die 3La of the left hot-pressing setting device; at this time, the first wet blank transfer die 7a moves downwards again to suck the wet blank from the suction filter forming die 2a again and moves upwards to the position, and meanwhile, the left hot pressing upper die 3La moves downwards to take away the wet blank from the second wet blank transfer die 5a and then moves upwards to the position; the second wet blank transfer die 5a returns to the lower side of the first wet blank transfer die 7a along the left and right translation rails 8; the first wet blank transfer die 7a moves downwards again, is matched with the second wet blank transfer die 5a, moves upwards to reset after transferring the wet blank to the second wet blank transfer die 5a, and simultaneously moves downwards the left hot pressing upper die 3La and is matched with the left hot pressing lower die 3Lc to carry out hot pressing, drying and shaping on the wet blank; after drying and shaping, the left hot-pressing mould is opened, and the paper pulp molding product is sent out of the paper pulp molding machine at a proper time. When the first wet blank transfer die 7a moves downwards to be matched with the second wet blank transfer die 5a, the wet blank can be pre-shaped.

The second wet blank transfer die 5a receives the wet blank again, and the second wet blank transfer die 5a carries the wet blank to move to the position below the left hot-pressing upper die 3Ra of the right hot-pressing shaping device; at this time, the first wet blank transfer die 7a moves downwards again to suck the wet blank from the suction filter forming die 2a and moves upwards to the position, and meanwhile, the right hot pressing upper die 3Ra moves downwards to take the wet blank away from the second wet blank transfer die 5a and then moves upwards to the position; the second wet blank transfer die 5a returns to the lower side of the first wet blank transfer die 7a along the left and right translation rails 8; the first wet blank transfer mold 7a is moved down again, and is closed with the second wet blank transfer mold 5a, after transferring the wet blank to the second wet blank transfer mold 5a, the first wet blank transfer mold is moved up and reset, at the same time, the right hot pressing upper mold 3Ra is moved down and is closed with the right hot pressing lower mold 3Rc to carry out hot pressing drying and shaping on the wet blank, after drying and shaping, the right hot pressing mold is opened, and the pulp molded product is sent out of the pulp molding machine at a proper time.

The complete implementation of the present embodiment is generally the following:

(1) The second wet blank transfer mold 5a enters the lower part of the first wet blank transfer mold 7a along the left and right translation rails 8, the first wet blank transfer mold 7a moves downwards to be matched with the second wet blank transfer mold 5a, and the wet blank is transferred to the second wet blank transfer mold 5a and then moves upwards for resetting;

(2) The second wet blank transfer die 5a which receives the wet blank is moved to the left along the left and right translation rails 8 to the lower part of the left upper hot-pressing die 3La which can move up and down; the left upper hot pressing die 3La moves downwards to take away the wet blank from the second wet blank transfer die 5a and then moves upwards to the position, and meanwhile, the first wet blank transfer die 7a moves downwards to the suction filter forming device 2 to suck the wet blank from the suction filter forming die 2a and then moves upwards to the position.

(3) The second wet blank transfer die 5a returns to the lower side of the first wet blank transfer die 7a along the left and right translation rails 8; the first wet blank transfer die 7a moves downwards again to be matched with the second wet blank transfer die 5a, the wet blank is transferred to the second wet blank transfer die 5a and then moves upwards to reset, meanwhile, the left hot pressing upper die 3La moves downwards to be matched with the left hot pressing lower die 3Lc to carry out hot pressing, drying and shaping on the wet blank, after hot pressing, drying and shaping, the left hot pressing die opens, and the paper pulp molded product is timely sent out of the paper pulp molding machine at proper time.

(4) The wet blank moves to the right along with the second wet blank transfer die 5a to the lower part of a right hot-pressing upper die 3Ra capable of moving up and down; the right upper hot pressing die 3Ra moves down to take away the wet green from the second wet green transfer die 5a and then moves up to the right position, and at the same time, the first wet green transfer die 7a moves down to the suction filter forming device 2 to suck up the wet green from the suction filter forming die 2a and then moves up to the right position.

(5) The second wet blank transfer die 5a from which the wet blank is transferred returns to the lower side of the first wet blank transfer die 7 a; the first wet blank transfer mold 7a moves downwards to transfer the wet blank to the second wet blank transfer mold 5a and then moves upwards for resetting, the second wet blank transfer mold 5a receives the wet blank, simultaneously, the right hot pressing upper mold 3Ra moves downwards to be matched with the right hot pressing lower mold 3Rc for hot pressing, drying and shaping the wet blank, after the hot pressing, the right hot pressing mold opens the mold, and the paper pulp molding product is timely sent out of the paper pulp molding machine at proper time.

And (3) circularly working the wet blank secondary transfer type pulp molding machine from (2) to (5) according to the steps to continuously produce the pulp molding product, and sending the pulp molding product out of the pulp molding machine in time.

In the whole production process of the pulp molding product, a wet blank manufactured by the suction filtration molding die 2a is taken away by the first wet blank transfer die 7a and is sent to the second wet blank transfer die 5a, the wet blank is preformed by the first wet blank transfer die 7a and the second wet blank transfer die 5a, then the wet blank is sent to the left hot pressing forming device or the right hot pressing forming device, the left hot pressing upper die 3La or the right hot pressing upper die 3Ra moves downwards to be matched with the second wet blank transfer die 5a, the wet blank can be preformed again, the left hot pressing upper die 3La or the right hot pressing upper die 3Ra moves upwards to suck the wet blank, and the left hot pressing upper die 3La or the right hot pressing upper die 3Ra drives the wet blank to move downwards to be matched with the left hot pressing lower die 3Lc or the right hot pressing lower die 3Rc with the wet blank when the second wet blank transfer die 5a returns to the lower part of the first wet blank transfer die 7a, and the wet blank is hot pressed, dried and formed. The stability of machine operation, the quality and the qualification rate of goods have been improved, reach manufacturing cost's effect that reduces.

Example 4

This example is a simplified version of example 3, and as shown in fig. 13 and 14, the wet-stock secondary transfer pulp molding machine of this example only includes 1 hot press-molding device. Because only 1 hot pressing setting device exists, the left hot pressing setting device and the right hot pressing setting device are not separated.

In this embodiment, the wet-base secondary transfer type pulp molding machine includes a frame 1, a suction filter forming device 2, a hot press forming device 3, a first wet-base transfer device 7, a second wet-base transfer device 5, a control system, and the like.

The left-right translation track 8 crosses the hot-pressing shaping device 3 and the first wet blank transfer device 7, and the second wet blank transfer device 5 can move between the upper part of the hot-pressing lower die 3c and the lower part of the first wet blank transfer die 7a along the left-right translation track 8 under the driving of the horizontal driver 6 of the second wet blank transfer device.

The complete implementation of the present embodiment is generally the following:

(1) The second wet blank transfer mold 5a after the wet blank is transferred enters the lower part of the first wet blank transfer mold 7a along the left-right translation track 8, the first wet blank transfer mold 7a moves downwards to be matched with the second wet blank transfer mold 5a, the wet blank is transferred to the second wet blank transfer mold 5a and then moves upwards to reset, and the second wet blank transfer mold 5a receives the wet blank;

(2) The second wet billet transfer die 5a which receives the wet billet moves to the lower part of the upper hot-pressing die 3a which can move up and down along the left and right translation rails 8; the upper hot-pressing die 3a moves downwards to take the wet blank away from the second wet blank transfer die 5a and then moves upwards to the position, and meanwhile, the first wet blank transfer die 7a moves downwards to the suction filter forming device 2 to suck the wet blank from the suction filter forming die 2a and then moves upwards to the position.

(3) The second wet blank transfer mold 5a after the wet blank is transferred away returns to the lower part of the first wet blank transfer mold 7a along the left and right translation rails 8; the first wet blank transfer die 7a moves downwards again to be matched with the second wet blank transfer die 5a, the wet blank is transferred to the second wet blank transfer die 5a and then moves upwards to reset, the second wet blank transfer die 5a receives the wet blank, and meanwhile, the hot-pressing upper die 3a moves downwards to be matched with the hot-pressing lower die 3c to carry out hot-pressing drying and shaping on the wet blank; after hot pressing, drying and shaping, the hot pressing mould is opened, and the paper pulp molding product is timely sent out of the paper pulp molding machine at a proper time.

(4) The wet blank moves to the lower part of the upper hot-pressing die 3a which can move up and down along with the second wet blank transfer die 5 a; the hot-pressing upper die 3a moves downwards to take the wet blanks away from the second wet blank transfer die 5a and then moves upwards to the right position, and meanwhile, the first wet blank transfer die 7a moves downwards to the suction filter forming device 2 to suck the wet blanks from the suction filter forming die 2a and then rises to the right position.

(5) The second wet blank transfer mold 5a after the wet blank is transferred away returns to the lower part of the first wet blank transfer mold 7a along the left and right translation rails 8; the first wet blank transfer die 7a moves downwards again to transfer the wet blank to the second wet blank transfer die 5a, then moves upwards for resetting, the second wet blank transfer die 5a receives the wet blank, and simultaneously, the hot-pressing upper die 3a moves downwards to be matched with the hot-pressing lower die 3c to carry out hot-pressing drying and shaping on the wet blank; after hot pressing, drying and shaping, the hot pressing mould is opened, and the paper pulp molding product is timely sent out of the paper pulp molding machine at a proper time.

And (3) circularly working the wet blank secondary transfer type pulp molding machine from (3) to (4) according to the steps to continuously produce the pulp molding product, and sending the pulp molding product out of the pulp molding machine in time.

Claims (7)

1. Wet base secondary transfer formula pulp molding machine contains suction filter forming device (2), hot pressing setting device (3), its characterized in that: also comprises a first wet blank transfer device (7) and a second wet blank transfer device (5);

the number of the hot-press shaping devices can be 1 or more, wherein the plurality of hot-press shaping devices comprise a left hot-press shaping device (3L) and a right hot-press shaping device (3R).

2. The wet blank secondary transfer pulp molding machine according to claim 1, characterized in that: the first wet blank transfer device comprises a first wet blank transfer die (7 a) capable of moving up and down, the first wet blank transfer die can extract wet blanks from the suction filter forming die (2 a), and the second wet blank transfer device (5) can horizontally move along a left-right translation track (8) so as to receive the wet blanks transferred from the first wet blank transfer die and transfer the wet blanks to the hot-pressing forming device; the left and right translation rails (8) are fixedly arranged along the left and right directions of the upper frame or the lower frame.

3. The wet blank secondary transfer pulp molding machine according to claim 2, characterized in that: the hot-pressing shaping device comprises a hot-pressing lower die capable of moving up and down, and a left translation rail (8) and a right translation rail (8) for moving the second wet blank transfer die horizontally extend to two sides of the hot-pressing shaping device, so that the second wet blank transfer die can move above the hot-pressing lower die, and the hot-pressing lower die is favorable for extracting the wet blank from the second wet blank transfer die (5 a);

the number of the lower hot press dies may be 1 or more, wherein the plurality of lower hot press dies includes a left lower hot press die (3 Lc) and a right lower hot press die (3 Rc).

4. The wet blank secondary transfer pulp molding machine according to claim 2, characterized in that: the hot-pressing shaping device comprises a hot-pressing upper die capable of moving up and down, and a left translation rail and a right translation rail for the second wet blank transfer die to move horizontally extend to two sides of the hot-pressing shaping device, so that the second wet blank transfer die can move below the hot-pressing upper die, and the hot-pressing upper die is favorable for extracting the wet blank from the second wet blank transfer die;

the number of the hot-pressing upper dies may be 1 or more, wherein the plurality of hot-pressing upper dies includes a left hot-pressing upper die (3 La) and a right hot-pressing upper die (3 Ra).

5. The wet blank secondary transfer pulp molding machine according to claim 3, characterized in that: the second wet blank transfer device is provided with a second wet blank transfer die (5 a) capable of turning 180 degrees, so that the wet blank from the first wet blank transfer die (7 a) can be turned 180 degrees up and down.

6. The wet blank secondary transfer pulp molding machine according to claim 5, characterized in that: the second wet blank transfer device (5) comprises a second wet blank transfer die (5 a) which can be overturned by 180 degrees up and down around a rotating shaft (5.1) and can horizontally move along a left-right translation track (8) so as to receive the wet blank transferred from the first wet blank transfer die, then the wet blank is overturned by 180 degrees up and down and is transferred to the upper part of the lower hot-pressing die, and the lower hot-pressing die which can move up and down extracts the overturned wet blank from the second wet blank transfer die.

7. The wet-base secondary transfer pulp molding machine according to claim 4 or claim 6, characterized in that: the second wet blank transfer device is driven to horizontally move by a horizontal driver (6) of the second wet blank transfer device, the horizontal driver of the second wet blank transfer device adopts a gear and rack driving structure, the horizontal driver of the second wet blank transfer device comprises a rack (6 b) fixed on the upper rack or the lower rack and a gear power head (6 a) fixed on the second wet blank transfer device, the gear power head comprises a gear and a servo motor for driving the gear to rotate, the gear of the gear power head is meshed with the rack (6 b), and the servo motor drives the gear to rotate so as to drive the second wet blank transfer device to horizontally move left and right; or the linear motor is used for driving the second wet blank transfer device to horizontally move, a rotor of the linear motor is fixed on the second wet blank transfer device, and a stator of the linear motor is fixed on the upper rack or the lower rack; or the screw-nut pair mechanism drives the second wet blank transfer device to horizontally move.

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