CN113969133A

CN113969133A - Environment-friendly bamboo wood adhesive and bamboo wood dip-coating method

Info

Publication number: CN113969133A
Application number: CN202111393112.4A
Authority: CN
Inventors: 刘丽君; 泮恩兰
Original assignee: Zhejiang Anyi New Material Co ltd
Current assignee: Zhejiang Anyi New Material Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-01-25
Anticipated expiration: 2041-11-23
Also published as: CN113969133B

Abstract

The invention discloses an environment-friendly bamboo wood adhesive and a bamboo wood dip-coating method, which comprises water, vegetable protein, a modifier, a cross-linking agent, a curing agent, a filler and an additive; the composition is prepared from the following components in parts by mass: water: 100 parts of plant protein: 20-40 parts of a modifier: 0.1-5 parts of a cross-linking agent: 20-40 parts of curing agent: 2-20 parts of filler: 1-5 parts of additive: 3 parts of a mixture; the environment-friendly bamboo and wood adhesive disclosed by the invention can be used for automatically picking up, soaking, shaking and draining, splicing, scraping and the like on a wood and bamboo board through the bamboo and wood dip-coating device, so that the four side walls of the wood and bamboo board can be uniformly coated with the adhesive after the wood and bamboo board is soaked in the adhesive on the bottom surface, and the adhesive on the edges of the top surface of the wood and bamboo board close to the four side walls of the wood and bamboo board can be automatically removed through the scraping action, so that the automation integration level is realized, and the production quality standard is uniform.

Description

Environment-friendly bamboo wood adhesive and bamboo wood dip-coating method

Technical Field

The invention relates to the technical field of bamboo wood processing structures, in particular to an environment-friendly bamboo wood adhesive and a bamboo wood dip-coating method.

Background

Along with the shortage of wood resources, more and more artificial board furniture is used for replacing solid wood furniture, so that the using amount of the adhesive is increased day by day. The research and application of adhesives are a new science for a long time, and as early as before, human beings have already utilized natural adhesives such as blood glue, bone glue, extracts in plants and the like. However, the adhesive has the defects of poor water resistance, low solid content, low bonding strength, easy mildew, short storage period and the like, and thus, the adhesive is gradually replaced by the developed "trialdehyde glue". At present, the adhesive for the artificial board mainly comprises a three-aldehyde adhesive, but the three-aldehyde adhesive mainly comprises formaldehyde, urea, melamine, phenol and the like as raw materials, and can release toxic and harmful substances such as formaldehyde, phenol and the like in the processes of production, transportation and use. With the gradual enhancement of environmental protection consciousness of people, the search for novel natural environment-friendly adhesive to replace 'triacid adhesive' is a necessary trend. The biomass adhesive mainly comprises a protein adhesive, a starch adhesive, a lignin adhesive, a pyrolytic bio-oil adhesive and modified products thereof.

Currently, patent No. CN201510088407.9 discloses an aldehyde-free vegetable protein-based wood adhesive and a preparation and use method thereof. The aldehyde-free protein-based wood adhesive comprises water, vegetable protein, a modifier, a cross-linking agent, a curing agent, a filler and an additive; the composition is prepared from the following components in parts by mass: 100 parts of water, 20-40 parts of vegetable protein, 0.1-5 parts of modifier, 20-40 parts of cross-linking agent, 2-20 parts of curing agent, 1-5 parts of filler and 0-3 parts of additive. The finished product is formed through vegetable protein dissolution, cross-linking reaction and curing reaction. The adhesive is mainly coated on a wood material by roller coating, scraper coating and curtain coating or spraying, and the composite wood artificial board is obtained by aging, cold pressing and hot pressing.

The application method of the aldehyde-free vegetable protein-based wood adhesive disclosed by the patent still has some defects in actual construction, and the specific defects are as follows:

firstly, in the prior art, for some special bamboo and wood boards with large surface areas, glue on the surfaces of the bamboo and wood boards is uniformly adhered and integrated by soaking the glue and uniformly coating the glue on the surfaces of the bamboo and wood boards, so that the adhesive disclosed in the patent is obviously unevenly coated on the surfaces of wooden materials by roll coating or spraying, and the bonding strength of the adhesive cannot be exerted to the strongest effect.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide an environment-friendly bamboo wood adhesive and a bamboo wood dip-coating method, and solves the technical problems that glue on the surface of a bamboo wood plate is uniformly and completely adhered usually in a mode of soaking the glue and uniformly coating the glue on the surface of the bamboo wood plate when some special bamboo wood plates with larger surface areas need to be adhered, so that the adhesive disclosed by the patent is obviously coated on the surface of a wood material by roller coating or spraying, the adhesive is not uniformly coated, and the adhesive strength of the adhesive cannot exert the strongest effect.

The technical problem to be solved by the invention is realized by adopting the following technical scheme: an environment-friendly bamboo wood adhesive comprises water, vegetable protein, a modifier, a cross-linking agent, a curing agent, a filler and an additive; the composition is prepared from the following components in parts by mass: water: 100 parts of plant protein: 20-40 parts of a modifier: 0.1-5 parts of a cross-linking agent: 20-40 parts of curing agent: 2-20 parts of filler: 1-5 parts of additive: 3 parts of a mixture; wherein the vegetable protein is defatted soybean flour with protein content not less than 50%; the modifier is one of sodium hydroxide and sodium dodecyl sulfate or urea or sodium sulfite; the cross-linking agent is prepared by mixing sodium silicate and epoxy resin modified polyvinyl alcohol solution, wherein the mass parts of the components are sodium silicate: 16 parts of epoxy resin: 2 parts of polyvinyl alcohol with the mass concentration of 25 percent, 100 parts; the curing agent is polyamide polyamine-maleic anhydride solution; the filler is sodium montmorillonite; the additive is wood micro-nano fibril.

The utility model provides a bamboo wood dip-coating method, bonds the dip-coating to bamboo plank based on an environment-friendly bamboo wood gluing agent, and this bamboo wood dip-coating method specifically adopts a bamboo wood dip-coating device cooperation to accomplish, and this bamboo wood dip-coating device is including the base that is fixed in ground, parallel spout has been seted up to base top left and right sides symmetry, each side the spout internal rotation in is connected with the screw lead screw, each side screw lead screw in the spout wherein one end is provided with the second servo motor drive rotatory, each side sliding connection has the slider in the spout, each side the slider top upright fixed mounting has first electric putter, each side the first electric putter top upwards stretches out has first push rod, both sides first push rod top horizontal has a slide bar, slide bar middle part sliding connection has the navigation frame, navigation frame top fixed mounting has second electric putter, the second electric push rod stretches out downwards to form a second push rod, a support frame is installed at the bottom end of the second push rod, an electronic sucker is arranged at the bottom end of the support frame, and the left side and the right side of the electronic sucker are symmetrically provided with rubber wiping blocks which slide in a reciprocating mode.

Base top left side fixed mounting has the storage to glue the case, store up and glue case top opening up, it has the glue solution to store up to glue incasement, base top right side has placed two rows of wood bamboo boards of piling up side by side.

As a preferred technical scheme, the air-moving frame comprises a first servo motor, a sliding hole cavity and a gear, wherein the middle parts of the left side and the right side of the air-moving frame are provided with through sliding hole cavities, the sliding hole cavities are connected to a sliding rod in a sliding mode, a rack is arranged on the front side wall of the sliding rod, the gear is rotatably connected in the sliding hole cavities, the top end of the air-moving frame is fixedly provided with the first servo motor, and the first servo motor drives the gear to rotate.

As a preferable technical scheme of the invention, a second support rod is rotatably arranged at the bottom end of the support frame, and a third servo motor is arranged at the rotary connection position between the support frame and the second support rod.

According to a preferred technical scheme of the invention, the electronic sucker is fixed at the bottom end of the second support rod, the middle part of the second support rod is horizontally and fixedly provided with a bidirectional telescopic cylinder, and the rubber blocks are respectively fixed at two sides of the bidirectional telescopic cylinder.

As a preferred technical scheme of the invention, the frictioning blocks are arranged into long strip blocks, and the length of the frictioning block on each side is larger than that of the wood-bamboo board;

and the side wall of the frictioning block facing the outer side of the wood-bamboo board is provided with an inclined glue pushing bevel edge.

According to a preferable technical scheme, the middle of the bottom surface of the frictioning block is provided with a chip scraping groove, the top surface of the chip scraping groove is fixedly provided with a plurality of chip scraping knives at equal intervals, the outer side of each chip scraping knife close to the wood bamboo board is provided with a sealing rubber pad, and the other side of each chip scraping knife is provided with frictioning sponge.

According to a preferred technical scheme, the rubberized sponge can be replaced by an rubberized fabric, the rubberized sponge comprises a rolling cloth cavity, winding shafts, a press switch, an rubberized fabric, supporting rollers and rubberized fabric placing grooves, the rubberized fabric placing grooves are formed in the bottom surfaces of rubberized blocks, the top portions of the rubberized fabric placing grooves are provided with the rolling cloth cavity, the left side and the right side of the top surfaces of the rubberized fabric placing grooves are symmetrically provided with through long holes, the left side and the right side of the rubberized fabric placing grooves are rotationally connected with the supporting rollers, the winding shafts are symmetrically arranged in the rolling cloth cavity, each winding shaft is rotationally connected into the rolling cloth cavity, one winding shaft is provided with a third servo motor for driving rotation, and the third servo motor is embedded into the rolling cloth cavity;

the other end of the rubberized fabric sequentially passes through the long hole on the top surface of the rubberized fabric placing groove, the supporting roller and the other long hole on the top surface of the rubberized fabric placing groove and is fixed on the other winding shaft in the cloth rolling cavity;

the pressing switch is arranged on the bottom surface of the rubber block, the pressing switch is arranged in the rubber cloth placing groove on the bottom surface of the rubber block, and the pressing switch is electrically connected with the third servo motor.

As a preferred technical scheme of the present invention, a motor support is fixedly mounted on the outer side of the bottom end of the second push rod, an independent motor is fixedly mounted on the top end of the motor support, a crank is rotatably disposed on the top end of the motor support, a lifting shaft rod is fixedly mounted on the outer side of the top end of the support frame, a cross frame is fixedly mounted on the top end of the lifting shaft rod, and the cross frame is slidably connected with the crank.

As a preferred technical scheme of the invention, a lifting hole is formed at the bottom end of the second push rod, a hanging rod is vertically arranged at the top end of the support frame, the top end of the hanging rod is connected in the lifting hole in a sliding manner, and a pressure spring is arranged at the top end of the hanging rod connected in the lifting hole in a sliding manner.

As a preferred technical scheme of the invention, the bottom end of the pouring head is provided with an annular supporting footing, and the supporting footing of the pouring head is butted and attached with the top end of the steel column.

Compared with the prior art, the invention at least comprises the following beneficial effects:

compared with the aldehyde-free plant protein-based wood adhesive disclosed in the patent number CN201510088407.9, the environment-friendly bamboo-wood adhesive disclosed by the invention also has the advantages that the formaldehyde hazard of the existing trialdehyde wood adhesive is avoided, and the defects of poor water resistance, low bonding strength or poor coating property of the existing protein-based wood adhesive are overcome. The adhesive prepared by using the mixture of vegetable protein and polyvinyl alcohol or lignosulfonate as a base material, modifying by using alkali, sodium sulfite and other modifiers, and simultaneously adding a cross-linking agent, a curing agent, a filler, an additive and the like has high check strength and water resistance, and the coating property is close to that of the traditional urea-formaldehyde adhesive, thereby completely meeting the use standard of the second type of adhesive.

The environment-friendly bamboo adhesive disclosed by the invention automatically finishes the actions of picking up, soaking, shaking and draining, splicing, scraping and the like on the wood-bamboo board through the bamboo dip-coating device, so that the four side walls of the wood-bamboo board can be uniformly coated with the adhesive after the wood-bamboo board is soaked in the adhesive at the bottom surface, and the glue adhered to the edges of the four side walls of the wood-bamboo board at the top surface of the wood-bamboo board is automatically removed through the processes of blocking, scraping, wiping and the like through the glue scraping action, so that the automatic integration level is realized, the production quality standard is unified, the wood-bamboo board is firmly spliced and stably installed, and the top surface of the spliced wood-bamboo board and the bottom surface of the wood-bamboo board are clean and tidy, so that the surface finish degree of the side wall of the wood-bamboo board after being spliced with other boards at a later stage is reached.

The wood-bamboo board is horizontally and reciprocally moved on the sliding rod through the air movement frame, left and right reciprocating carrying and transferring of the wood-bamboo board are achieved, the wood-bamboo board is moved from the right side to the left side into the glue storage box for glue dipping, the sliding block reciprocally slides in the sliding groove, the wood-bamboo board is transferred from the glue storage box to the bearing platform to be placed, the wood-bamboo board is placed into the glue storage box without a manipulator in the operation, and therefore the top surface of the wood-bamboo board is effectively guaranteed to be completely dipped by an adhesive in the glue storage box, the wood-bamboo board is placed down and then grabbed, four side walls of the spliced wood-bamboo board are conveniently and manually bonded and fixed, and the glue dipping and splicing convenience of the wood-bamboo board is improved.

The second electric push rod drives the push rod to extend downwards, the electronic sucker is controlled to move downwards, the top surface of the wood-bamboo board which is orderly stacked below and located at the topmost position is sucked and lifted upwards through the electronic sucker, the glue wiping block on the periphery of the electronic sucker is pressed and fastened with the top surface of the wood-bamboo board after the top surface of the wood-bamboo board is sucked tightly by the electronic sucker, and the bottom surface of the glue wiping block is pressed tightly through the sealing rubber pad on the bottom surface of the glue wiping block, so that when the bottom surface of the wood-bamboo board and the side wall of the wood-bamboo board are soaked by the environment-friendly bamboo adhesive in the glue storage box, the top surface of the wood-bamboo board cannot be permeated with the environment-friendly bamboo adhesive, and therefore the cleanness of the top surface of the wood-bamboo board is effectively guaranteed.

And when the glue pushing bevel edge is arranged on the outer side of the glue wiping block, the glue wiping block and the wood bamboo board are lifted upwards in the glue storage box, the environment-friendly bamboo adhesive is higher in dropping speed downwards through the glue pushing bevel edge, so that the environment-friendly bamboo adhesive is not easy to conglobate and adhere to the outer side of the glue wiping block.

And after the two wood-bamboo boards are lifted up from the glue storage box, the lifting shaft lever is driven by the crank to carry out axial lifting reciprocating motion, so that the two wood-bamboo boards are lifted up from the glue storage box and generate high-frequency reciprocating shaking, and the environment-friendly bamboo-wood adhesive with thicker bottom surface adhesion of the two wood-bamboo boards is shaken off downwards, so that the bottom surfaces and the side surfaces of the two wood-bamboo boards are cleaner and cleaner.

Fifthly, after being shaken out and drained two wood bamboo boards, the two wood bamboo boards are rotated through the activities of two side supports and a second support rod, the drive of a third servo motor is rotated, the second support rod on the three servo motor drives the two wood bamboo boards is folded into a right angle to the support frame direction, the two wood bamboo boards with environment-friendly bamboo and wood adhesives adhered to the bottom surfaces are spliced, the two wood bamboo boards are mechanically spliced, and the spliced surfaces of the two wood bamboo boards are pressed more firmly.

Wherein, two wood bamboo board top surfaces are shaking and dripdrying the back, and each wood bamboo board top surface slides to the outside of wood bamboo board through wiping the piece of glue, wipes the piece of glue and slides the in-process, scrapes the bits sword through wiping piece bottom surface and scrape in the chip groove and shovel the glue to wood bamboo board top surface to the realization is scraped out wood bamboo board top surface edge adhesive's glue, then the rethread is wiped the glued sponge and is cleaned the wood bamboo board top surface neatly, thereby makes the wood bamboo board surface clean.

The glue wiping sponge is replaced by the automatically replaceable glue wiping cloth, after glue wiping of the glue wiping cloth is completed, the glue wiping cloth which is wiped completely is automatically stored into the cloth rolling cavity through movement of the glue wiping cloth, and the new glue wiping cloth is pulled to move into the bottom surface of the glue wiping block, so that when the top surface of a new wood bamboo board is wiped, the cleanness of the surface of the wood bamboo board can be effectively improved, batch production is facilitated, and the cleanness of the surface of each wood bamboo board during batch production is kept.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic diagram of a front view structure of a bamboo wood dip coating device of the invention;

FIG. 2 is a schematic view of a top view structure of the bamboo and wood dip coating device of the present invention;

FIG. 3 is a schematic top sectional view of the air moving frame of the present invention mounted on a sliding rod;

FIG. 4 is an enlarged view of a portion of FIG. 1 taken at A in the present specification;

FIG. 5 is a schematic structural view of a third servo motor of the present invention installed at the joint of a support frame and a second support rod;

FIG. 6 is an enlarged view of a portion of FIG. 1 taken at B in the present specification;

FIG. 7 is an enlarged view of a portion of FIG. 6 taken at C in the present specification;

FIG. 8 is a schematic left-side sectional view of a third servo motor of the present invention in a cloth winding chamber;

FIG. 9 is a flow chart of the process steps of the bamboo wood dip coating method of the present invention;

in the figure: 1. a base; 2. a chute; 3. a threaded lead screw; 4. a slider; 5. a first electric push rod; 6. a first push rod; 7. a navigation frame; 701. a slide cavity; 8. a slide bar; 9. a first servo motor; 901. a gear; 10. a glue storage box; 11. a second electric push rod; 1101. a second push rod; 1102. a lifting hole; 1103. a crank; 1104. a cross frame; 1105. a motor bracket; 1106. a lifting shaft lever; 12. a support frame; 1201. a hanging rod; 1202. a pressure spring; 13. a wood suction assembly; 1301. an electronic suction cup; 1302. a bidirectional telescopic cylinder; 1303. a third servo motor; 1304. a second support bar; 1305. rubbing a rubber block; 1306. pushing a glue bevel edge; 1307. sealing the rubber pad; 1308. scraping a chip groove; 1309. a scraping knife; 1310. rubbing sponge; 1311. a cloth rolling cavity; 1312. a spool; 1313. a push switch; 1314. rubberized fabric is rubbed; 1315. a support roller; 1316. a wipe cloth placing groove; 1317. a third servo motor; 14. a second servo motor; 15. a support platform; 16. a second bidirectional electric push rod.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

It will be understood that when an element is referred to as being "secured to" another element, it can be on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for illustrative purposes only and do not represent the only embodiments.

Example 1

Please refer to fig. 1-9, which are schematic diagrams of the overall structure of an environment-friendly bamboo wood adhesive and a bamboo wood dip coating method;

an environment-friendly bamboo wood adhesive comprises water, vegetable protein, a modifier, a cross-linking agent, a curing agent, a filler and an additive; the composition is prepared from the following components in parts by mass: water: 100 parts of plant protein: 20-40 parts of a modifier: 0.1-5 parts of a cross-linking agent: 20-40 parts of curing agent: 2-20 parts of filler: 1-5 parts of additive: 3 parts of a mixture; wherein the vegetable protein is defatted soybean flour with protein content not less than 50%; the modifier is one of sodium hydroxide and sodium dodecyl sulfate or urea or sodium sulfite; the cross-linking agent is prepared by mixing sodium silicate and epoxy resin modified polyvinyl alcohol solution, wherein the mass parts of the components are sodium silicate: 16 parts of epoxy resin: 2 parts of polyvinyl alcohol with the mass concentration of 25 percent, 100 parts; the curing agent is polyamide polyamine-maleic anhydride solution; the filler is sodium montmorillonite; the additive is wood micro-nano fibril.

The environment-friendly bamboo wood adhesive is disclosed by the prior art, and for example, patent number CN201510088407.9 discloses an aldehyde-free vegetable protein-based wood adhesive and a preparation and use method thereof. Also discloses components of the aldehyde-free protein-based wood adhesive.

A bamboo and wood dip-coating method is used for carrying out bonding and dip-coating on a bamboo and wood board based on the environment-friendly bamboo and wood adhesive as claimed in claim 1, and is specifically completed by matching a bamboo and wood dip-coating device, the bamboo and wood dip-coating device comprises a base 1 fixed on the ground, parallel sliding grooves 2 are symmetrically formed in the left side and the right side of the top end of the base 1, the sliding groove 2 in each side is a straight elongated groove, a threaded screw rod 3 is rotatably connected in the sliding groove 2 in each side, a second servo motor 14 is arranged at one end of the threaded screw rod 3 in each side sliding groove 2 and drives the threaded screw rod to rotate, a second servo motor 14 in each side is fixed on the rear side of the base 1, a sliding block 4 is slidably connected in the sliding groove 2 in each side, a first electric push rod 5 is vertically and fixedly arranged at the top end of the sliding block 4 in each side, a first push rod 6 extends upwards from the top end of the first electric push rod 5 in each side, a sliding rod 8 is transversely arranged at the top end of the first push rods 6 on the two sides, a navigation frame 7 is connected to the middle of each sliding rod 8 in a sliding mode, a second electric push rod 11 is fixedly mounted at the top end of the navigation frame 7, a second push rod 1101 extends downwards from the second electric push rod 11, a support frame 12 is mounted at the bottom end of the second push rod 1101, an electronic suction cup 1301 is arranged at the bottom end of the support frame 12, and the left side and the right side of the electronic suction cup 1301 are symmetrically provided with rubber blocks 1305 which slide in a reciprocating mode.

Base 1 top left side fixed mounting has the storage to glue case 10, stores up and glues case 10 top opening up, stores up and has deposited the glue solution in the case 10, and base 1 top right side has placed two rows of wood bamboo boards of piling up side by side.

The air-moving frame 7 comprises a first servo motor 9, a sliding hole cavity 701 and a gear 901, the middle parts of the left side and the right side of the air-moving frame 7 are provided with a through sliding hole cavity 701, the sliding hole cavity 701 is connected to a sliding rod 8 in a sliding manner, the front side wall of the sliding rod 8 is provided with a rack, the gear 901 is rotationally connected to the sliding hole cavity 701, the top end of the air-moving frame 7 is fixedly provided with the first servo motor 9, the first servo motor 9 drives the gear 901 to rotate so as to conveniently drive the air-moving frame 7 to slide on the sliding rod 8 and horizontally slide on the sliding rod 8 through the air-moving frame 7, the left-right reciprocating carrying and transferring of the wood bamboo boards are realized, the wood bamboo boards are carried into the glue storage box 10 from the right to the left for glue dipping, the wood bamboo boards are carried into the glue storage box 10 through the reciprocating sliding of a sliding block 4 in a sliding groove 2, the wood bamboo boards are transferred onto a supporting platform 15 from the glue storage box 10 for placement, the operation does not need of a manipulator to put the wood bamboo boards into the glue storage box 10, thereby effectively ensuring that the top surfaces of the wood bamboo boards are completely dipped in the glue storage box 10, the operation of putting down and then picking up is convenient for the manual work to bond and fix four side walls of the spliced wood-bamboo board so as to improve the convenience of glue dipping and splicing of the wood-bamboo board.

The bottom end of the support frame 12 is rotatably provided with a second support rod 1304, and a third servo motor 1303 is arranged at the rotary joint between the support frame 12 and the second support rod 1304. The third servo motor 1303 drives the supporting frame 12 to rotate relative to the second supporting rod 1304.

Wherein, second bracing piece 1304 can reciprocal horizontal slip in support frame 12 bottom, and two second bracing piece 1304 carries out two-way promotion through installing second bidirectional electric putter 16 in support frame 12 bottom, thereby make two second bracing pieces 1304 of support frame 12 bottom carry out reciprocating sliding, thereby realize that second bracing piece 1304 on two wood bamboo boards of third servo motor 1303 drive folds into the right angle to support frame 12 direction, make two wood bamboo boards that the bottom surface is stained with the environment-friendly bamboo wood gluing agent slide to the centre, make the concatenation of wood bamboo board to the centre laminating, make two wood bamboo boards pass through mechanical laminating, make two wood bamboo board concatenation faces press more firmly.

The electronic suction cup 1301 is fixed at the bottom end of a second support rod 1304, a bidirectional telescopic cylinder 1302 is horizontally and fixedly arranged in the middle of the second support rod 1304, and the rubber blocks 1305 are respectively fixed at two sides of the bidirectional telescopic cylinder 1302.

Among them, the electronic suction cup is a disclosure technology already sold on the market in the field, and it should be well known to those skilled in the art that the product has been mass-produced and manufactured on the market, and the electronic suction cup does not serve as an innovative point of the present invention because the person skilled in the art does not need to make much tangle therein.

According to the invention, the second electric push rod 11 drives the push rod to extend downwards, the electronic sucker 1301 is controlled to move downwards, the top surface of the wood-bamboo board which is orderly stacked below and located at the topmost position is sucked and lifted upwards through the electronic sucker 1301, at the moment, after the top surface of the wood-bamboo board is sucked tightly by the electronic sucker 1301, the glue wiping block 1305 on the periphery of the electronic sucker 1301 is pressed and fastened with the top surface of the wood-bamboo board, and is pressed tightly through the sealing rubber pad 1307 on the bottom surface of the glue wiping block 1305, so that when the bottom surface of the wood-bamboo board and the side wall of the wood-bamboo board are soaked by the environment-friendly bamboo adhesive in the glue storage box 10, the top surface of the wood-bamboo board cannot be penetrated by the environment-friendly bamboo adhesive, and the cleanness of the top surface of the wood-bamboo board is effectively ensured.

According to the invention, the glue pushing bevel edge 1306 is arranged on the outer side of the glue wiping block 1305, and when the glue wiping block 1305 and the wood bamboo board are lifted upwards in the glue storage box 10 through the glue pushing bevel edge 1306, the environment-friendly bamboo and wood adhesive drops downwards at a higher speed through the glue pushing bevel edge 1306, so that the environment-friendly bamboo and wood adhesive is not easy to conglobate and adhere to the outer side of the glue wiping block 1305.

The rubber blocks 1305 are arranged into long strips, the length of each rubber block 1305 on each side is larger than that of the wood bamboo board, and inclined rubber pushing inclined edges 1306 are arranged on the side walls of the rubber blocks 1305 facing the outer side of the wood bamboo board.

The middle of the bottom surface of the rubber wiping block 1305 is provided with a rubber scraping groove 1308, the top surface of the rubber scraping groove 1308 is fixedly provided with a plurality of chip scraping knives 1309 at equal intervals, each chip scraping knife 1309 is of an inclined structure, the outer sides of the chip scraping knives 1309 close to the wood-bamboo boards are provided with sealing rubber pads 1307, and the other sides of the chip scraping knives 1309 are provided with rubber wiping sponge 1310.

The rubberized sponge 1310 can be replaced by a rubberized fabric 1314, the rubberized sponge 1310 comprises a rolling cavity 1311, a winding shaft 1312, a press switch 1313, a rubberized fabric 1314, support rollers 1315 and rubberized fabric placement grooves 1316, the rubberized fabric placement grooves 1316 are arranged on the bottom surface of a rubberized block 1305, the rolling cavity 1311 is formed in the top of the rubberized fabric placement grooves 1316, through long holes are symmetrically formed in the left side and the right side of the top surface of the rubberized fabric placement grooves 1316, the support rollers 1315 are rotatably connected to the left side and the right side of the rubberized fabric placement grooves 1316, winding shafts 1312 are symmetrically arranged in the rolling cavity 1311, each winding shaft 1312 is rotatably connected into the rolling cavity 1311, one winding shaft 1312 is provided with a third servo motor 1317 for driving rotation, and the third servo motor 1317 is embedded into the rolling cavity 1311;

the spool 1312 embedded in the cloth rolling cavity 1311 is wound with the rubber cloth 1314, and the other end of the rubber cloth 1314 passes through the long hole on the top surface of the rubber cloth containing groove 1316, the support roller 1315 and the other long hole on the top surface of the rubber cloth containing groove 1316 in sequence and is fixed on the other spool 1312 in the cloth rolling cavity 1311;

the push switch 1313 is disposed on the bottom surface of the pad 1305, the push switch 1313 is disposed in the pad seating slot 1316 on the bottom surface of the pad 1305, and the push switch 1313 is electrically connected to the third servo motor 1317.

Wherein, two wood bamboo board top surfaces are shaking and dripdrying the back, each wood bamboo board top surface slides to the outside of wood bamboo board through wiping gluey piece 1305, and wiping gluey piece 1305 is at the slip in-process, scrapes the bits sword 1309 of scraping in bits groove 1308 through wiping gluey piece 1305 bottom surface and carries out the shovel glue to wood bamboo board top surface, thereby realize scraping out the glue of wood bamboo board top surface edge adhesion, then the rethread is wiped gluey sponge 1310 and is cleaned wood bamboo board top surface, thereby make the wood bamboo board surface clean and tidy.

The glue wiping sponge 1310 is replaced by a new glue wiping cloth 1314 which can be automatically replaced, after the glue wiping cloth 1314 finishes glue wiping, the glue wiping cloth 1314 is moved to enable the glue wiping cloth 1314 to be automatically stored into the cloth rolling cavity 1311, and the new glue wiping cloth 1314 is pulled to be moved into the bottom surface of the glue wiping block 1305, so that when the top surface of a new wood-bamboo board is wiped, the neatness of the surface of the wood-bamboo board can be effectively improved, the batch production is facilitated, and the neatness of the surface of each wood-bamboo board in batch production is kept.

When the electronic suction cup 1301 sucks the top surface of the wood-bamboo board, the top surface of the wood-bamboo board extrudes the push switch 1313 on the bottom surface of the rubber wiping block 1305, so that the push switch 1313 is pressed, at this moment, the rubber wiping cloth 1314 is replaced by a new rubber wiping cloth 1314, and when the electronic suction cup 1301 sucks the top surface of the wood-bamboo board and the push switch 1313 is pressed downwards to the maximum limit value, the rubber wiping cloth 1314 completes replacement of the new rubber wiping cloth 1314 at this moment.

The outer side of the bottom end of the second push rod 1101 is fixedly provided with a motor support 1105, the top end of the motor support 1105 is fixedly provided with an independent motor, the top end of the motor support 1105 is rotatably provided with a crank 1103, the outer side of the top end of the support frame 12 is fixedly provided with a lifting shaft rod 1106, the top end of the lifting shaft rod 1106 is fixedly provided with a cross frame 1104, and the cross frame 1104 is connected with the crank 1103 in a sliding manner.

Sixthly, two support frames 12 are arranged, two wood-bamboo boards can be simultaneously grabbed and simultaneously dipped in glue in the glue storage box 10, the top surfaces of the two wood-bamboo boards are simultaneously sealed through glue wiping blocks 1305 on the top surfaces of the two wood-bamboo boards, so that the top surfaces of the two wood-bamboo boards are neat, then after the glue dipping is completed, the support frames 12 are lifted upwards through the second electric push rod 11, the two wood-bamboo boards are lifted from the glue storage box 10, the lifting shaft rod 1106 is driven to perform axial lifting reciprocating motion through the crank 1103 after the lifting, the two wood-bamboo boards are lifted from the glue storage box 10 and generate high-frequency reciprocating shaking, and accordingly the environment-friendly bamboo adhesive with thick bottom adhesion of the two wood-bamboo boards is shaken downwards, and the bottom surfaces and the side surfaces of the two wood-bamboo boards are cleaner and neat.

Lifting hole 1102 is seted up to second push rod 1101 bottom, and support frame 12 top is provided with peg 1201 upright, and the peg 1201 top is through sliding connection in lifting hole 1102, and sliding connection is provided with pressure spring 1202 in lifting hole 1102 peg 1201 top in the lifting hole 1102, is convenient for press support frame 12, makes support frame 12 when not needing reciprocal shake to drip, keeps away face support frame 12 and produces the shake that does not need.

After shaking two wood bamboo boards dry, two wood bamboo boards rotate through the activity of both sides support frame 12 and second bracing piece 1304, the drive of cooperation third servo motor 1303 is rotatory, second bracing piece 1304 on two wood bamboo boards of third servo motor 1303 drive is folded into the right angle to support frame 12 direction, make two wood bamboo boards laminating concatenation that the bottom surface is stained with the environment-friendly bamboo wood gluing agent, make two wood bamboo boards pass through mechanical laminating, make two wood bamboo boards concatenation face press more firmly.

Based on above-mentioned record environment-friendly bamboo wood gluing agent and bamboo wood dip-coating device, the application provides a bamboo wood dip-coating method based on environment-friendly bamboo wood gluing agent and bamboo wood dip-coating device, specifically includes following several steps:

s1, neatly stacking wood and bamboo boards: firstly, orderly placing a plurality of wood and bamboo boards on the top end of a base 1 in two rows;

s2, picking up wood and bamboo boards: the top surfaces of the topmost wood and bamboo boards in two rows of orderly stacked wood and bamboo boards are adsorbed by the electronic sucker 1301 and lifted upwards, and at the moment, the bottom surfaces of the topmost wood and bamboo boards in two rows are in the same horizontal plane and at the same height on the electronic sucker 1301;

s3, soaking the wood and bamboo boards: transferring the two extracted wood-bamboo boards into a glue storage box 10, soaking the environment-friendly bamboo-wood adhesive stored in the glue storage box 10 on the bottom surface and the side surface of the wood-bamboo boards, and controlling the lifting height of the wood-bamboo boards in the glue storage box 10 to enable the top surfaces of the wood-bamboo boards to be as high as the top surfaces of the environment-friendly bamboo-wood adhesive stored in the glue storage box 10;

s4, shaking and draining the wood and bamboo board: upwards mention support frame 12 through second electric putter 11, make two wood bamboo boards mention in storing up the rubber box 10, mention the back and carry out axial lift reciprocating motion through crank 1103 drive lift axostylus axostyle 1106, make two wood bamboo boards mention the back and produce a high-frequency reciprocal shake from storing up in the rubber box 10, thereby make the thicker environment-friendly bamboo wood gluing agent of two wood bamboo board bottom surfaces adhesion shaken off downwards, thereby make two wood bamboo board bottom surfaces and side cleaner and tidier a little more.

S5, splicing wood and bamboo boards: after shaking two wood bamboo boards dry in step S4, two wood bamboo boards rotate through the activity of both sides support frame 12 and second bracing piece 1304, the drive of cooperation third servo motor 1303 is rotatory, second bracing piece 1304 on two wood bamboo boards of third servo motor 1303 drive is folded into the right angle to support frame 12 direction, make two wood bamboo boards laminating concatenation that the bottom surface is stained with the environment-friendly bamboo wood gluing agent, make two wood bamboo boards pass through mechanical laminating, make two wood bamboo boards concatenation face press more firmly.

S6, wiping the edge of the top surface of the wood-bamboo board: every wood bamboo board top surface slides to the outside of wood bamboo board through wiping gluey piece 1305, and the piece 1305 of wiping gluey is at the slip in-process, scrapes the bits sword 1309 of scraping in bits groove 1308 through the piece 1305 bottom surface of wiping and shovels the glue to wood bamboo board top surface to the realization is scraped out wood bamboo board top surface edge adhesive's glue, then the rethread is wiped the wood bamboo board top surface through the sponge 1310 of wiping, thereby makes the wood bamboo board surface clean and tidy.

S7, transferring the wood and bamboo boards: the slide block 4 slides in the slide groove 2 in a reciprocating way, so that the wood-bamboo board is transferred to the bearing platform 15 from the upper part of the glue storage box 10 to be aired, dried by glue solution or spliced on the side wall of the wood-bamboo board.

The mechanism is as follows:

1. the higher the vegetable protein content, the better its binding properties to wood, but the more expensive it is. The price of the defatted soybean flour and the low-temperature soybean meal in the current market is 5000-6000 Yuan/ton, and the yield is rich. The more preferable vegetable protein raw material is defatted soybean powder with the protein content of more than 50 percent, so that the production cost can be greatly reduced, and the industrial popularization is facilitated. The raw material of the vegetable protein should be pretreated to remove complex carbohydrate and cellulose as much as possible, because the close action of the carbohydrate and the cellulose and the protein hinders the binding action of the protein to wood, and the carbohydrate only provides viscosity but does not have the binding property, thus being not beneficial to coating of the adhesive.

2. The modified soybean protein material is modified by matching alkali and other modifiers, so that the protein is not degraded when unfolded, and a proper exposed group is ensured, because the alkali has a strong effect of unfolding the protein, but the single use can cause partial soybean protein to be decomposed, and a good bonding effect cannot be achieved. In addition, sodium sulfite salts are added to perform disulfide bond cracking treatment, so that the viscosity is reduced, and the fluidity of the adhesive is increased, so that the coating property of the adhesive is improved.

3. The polyvinyl alcohol solution modified by the sodium silicate and the epoxy resin can obviously improve the bonding capability and the water-resistant strength of the adhesive to wood. The polyamide polyamine-epichlorohydrin is used as a curing agent, has the effect that the polyamide polyamine-epichlorohydrin is ammonium salt polyamide polyamine containing epoxy formed by the reaction of secondary amine in polyamide polyamine and epichlorohydrin, can be dissolved in water and is relatively stable at room temperature, and can react with protein to form a water-resistant cross-linked structure in the hot pressing process, so that the water resistance of the product is improved.

4. The polyamide polyamine-anhydride of the invention is taken as a curing agent, and the effect is that the anhydride and the amino group in the polyamide polyamine are in a proportion of 0.2-10: 1 is reacted for 1-30 min at 20-70 ℃, which is favorable for improving the reactivity of amine substances and unfolding protein in alkaline environment, and can react with the protein to form a water-resistant cross-linked structure in the hot pressing process, thereby improving the bonding strength and water resistance of the product.

5. The filler is one or more of inorganic montmorillonite, organic bentonite, kaolin, silicon dioxide, wheat flour, bark powder or nut shell powder. Wherein the inorganic montmorillonite includes sodium-based montmorillonite, calcium-based montmorillonite, magnesium-based montmorillonite, and sodium-calcium-based montmorillonite. The organic montmorillonite is obtained by modifying inorganic montmorillonite with quaternary ammonium salts with different long chains, and has a similar structural characteristic to the inorganic montmorillonite and a layered structure. The addition of the filler improves the initial viscosity of the adhesive and improves the plate prepressing effect.

6. The additive is one or more of wood micro-nano fibrils and nano particles (such as nano titanium dioxide, nano silicon dioxide, nano aluminum oxide and the like and nano active calcium carbonate).

In addition, it is well known in the art that vegetable proteins are a major by-product downstream of the large-scale agricultural product processing industry (e.g., processing and production of vegetable oils) and are renewable resources. Large and rich, no region limitation, wide source and controllable cost. Plant proteins are of a wide variety, such as vegetable proteins, cereal proteins, oilseed proteins. Of most research interest in oilseeds is the ability to utilize the protein's self-adhesive properties to make wood adhesives, by-products downstream in their production, such as soy protein extracted from soybean meal. Currently, the most studied are natural legume protein-based adhesives. The bean protein molecule belongs to spherical molecule, van der waals force, hydrogen bond force and hydrophobic reaction in polypeptide chain make the protein molecule combine tightly, most of hydrophobic side group is in the interior, and hydrophilic group is exposed in water, so the natural protein has poor adhesive action, and the protein molecule can be uncoiled and uncoiled only by modification. The expanded functional groups have the opportunity of recombination during hot pressing, and an adhesive layer with certain bonding strength can be formed. Therefore, scholars at home and abroad adopt various methods such as denaturation treatment, acid-base degradation modification, synthetic resin blending modification, crosslinking modification, nano modification, grafting modification and the like to improve the performance of the soy protein adhesive. However, at present, various modification methods have advantages and disadvantages, or the raw material cost of the adhesive is increased, and the modification process is relatively complex; or the initial adhesion and water resistance can be improved, but the fluidity is poor, and the coating property needs to be improved. The bamboo and wood dip-coating method provided by the invention can be used for dip-coating bamboo and wood on adhesives with poor relative fluidity.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An environment-friendly bamboo wood adhesive is characterized by comprising water, vegetable protein, a modifier, a cross-linking agent, a curing agent, a filler and an additive; the composition is prepared from the following components in parts by mass: water: 100 parts of plant protein: 20-40 parts of a modifier: 0.1-5 parts of a cross-linking agent: 20-40 parts of curing agent: 2-20 parts of filler: 1-5 parts of additive: 3 parts of a mixture; wherein the vegetable protein is defatted soybean flour with protein content not less than 50%; the modifier is one of sodium hydroxide and sodium dodecyl sulfate or urea or sodium sulfite; the cross-linking agent is prepared by mixing sodium silicate and epoxy resin modified polyvinyl alcohol solution, wherein the mass parts of the components are sodium silicate: 16 parts of epoxy resin: 2 parts of polyvinyl alcohol with the mass concentration of 25 percent, 100 parts; the curing agent is polyamide polyamine-maleic anhydride solution; the filler is sodium montmorillonite; the additive is wood micro-nano fibril.

2. A bamboo and wood dip-coating method is characterized in that the bamboo and wood board is bonded and dip-coated by an environment-friendly bamboo and wood adhesive according to claim 1, the bamboo and wood dip-coating method is specifically completed by matching a bamboo and wood dip-coating device, the bamboo and wood dip-coating device comprises a base fixed on the ground, parallel sliding grooves are symmetrically formed in the left side and the right side of the top end of the base, a threaded lead screw is rotationally connected in the sliding groove of each side, one end of the threaded lead screw in the sliding groove of each side is driven to rotate by a second servo motor, a sliding block is slidably connected in the sliding groove of each side, a first electric push rod is vertically and fixedly arranged at the top end of the sliding block of each side, a first push rod upwards extends out from the top end of the first electric push rod of each side, a sliding rod is transversely arranged at the top ends of the first push rods at the two sides, and a navigation frame is slidably connected in the middle of the sliding rods, the aircraft is provided with a support frame, the support frame bottom is provided with an electronic sucker, and the left side and the right side of the electronic sucker are symmetrically provided with rubber wiping blocks which slide in a reciprocating manner.

3. The bamboo wood dip coating method according to claim 1, characterized in that: the navigation frame comprises a first servo motor, a sliding hole cavity and a gear, wherein the middle of the left side and the right side of the navigation frame is provided with the through sliding hole cavity, the sliding hole cavity is connected to the sliding rod in a sliding mode, the front side wall of the sliding rod is provided with a rack, the gear is rotatably connected in the sliding hole cavity, the top end of the navigation frame is fixedly provided with the first servo motor, and the first servo motor drives the gear to rotate.

4. The bamboo wood dip coating method according to claim 2, characterized in that: the support frame bottom rotates and is provided with the second bracing piece, the support frame with it is provided with third servo motor to rotate the junction between the second bracing piece.

5. The bamboo wood dip coating method of claim 4, characterized in that: the electronic sucker is fixed at the bottom end of the second supporting rod, the middle part of the second supporting rod is horizontally and fixedly provided with a bidirectional telescopic cylinder, and the rubber blocks are respectively fixed at two sides of the bidirectional telescopic cylinder.

6. The bamboo wood dip coating method of claim 5, characterized in that: the glue wiping blocks are arranged into long strip blocks, and the length of each glue wiping block on each side is larger than that of the wood-bamboo board;

7. The bamboo wood dip coating method of claim 5, characterized in that: the scraping groove is formed in the middle of the bottom surface of the rubber wiping block, a plurality of scraping knives are fixedly arranged on the top surface of the scraping groove at equal intervals, sealing rubber pads are arranged on the outer sides, close to the wood bamboo boards, of the scraping knives, and rubber wiping sponge is arranged on the other sides of the scraping knives.

8. The bamboo wood dip coating method of claim 7, characterized in that: the collodion sponge can be replaced by a collodion cloth, the collodion sponge comprises a cloth rolling cavity, a winding shaft, a press switch, a collodion cloth, a supporting roller and a collodion cloth placing groove, the collodion cloth placing groove is formed in the bottom surface of a collodion block, a cloth rolling cavity is formed in the top of the collodion cloth placing groove, through long holes are symmetrically formed in the left side and the right side of the top surface of the collodion cloth placing groove, the supporting roller is rotationally connected to the left side and the right side of the collodion cloth placing groove, the winding shafts are symmetrically arranged in the cloth rolling cavity, each winding shaft is rotationally connected in the cloth rolling cavity, one winding shaft is driven to rotate by a third servo motor, and the third servo motor is embedded in the cloth rolling cavity;

9. The bamboo wood dip coating method according to claim 1, characterized in that: the lifting mechanism is characterized in that a motor support is fixedly mounted on the outer side of the bottom end of the second push rod, an independent motor is fixedly mounted at the top end of the motor support, a crank is rotatably arranged at the top end of the motor support, a lifting shaft rod is fixedly arranged on the outer side of the top end of the support frame, a cross frame is fixedly mounted at the top end of the lifting shaft rod, and the cross frame is connected with the crank in a sliding mode.

10. The bamboo wood dip coating method according to claim 1, characterized in that: the lifting hole has been seted up to second push rod bottom, the support frame top is provided with the peg upright, the peg top is through sliding connection in the lifting hole, sliding connection in the lifting hole the peg top is provided with the pressure spring.