CN1011675B - Method and special equipment for one-shot shavings-moulded products - Google Patents
Method and special equipment for one-shot shavings-moulded productsInfo
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- CN1011675B CN1011675B CN 87103724 CN87103724A CN1011675B CN 1011675 B CN1011675 B CN 1011675B CN 87103724 CN87103724 CN 87103724 CN 87103724 A CN87103724 A CN 87103724A CN 1011675 B CN1011675 B CN 1011675B
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Abstract
The present invention relates to a one-step shavings-moulding product, a method and a special device for manufacturing the product, which belongs to new material, a new structure and a new manufacturing method of wooden products such as furniture, etc. and a special device using the method. The present invention utilizes shavings or the leftover bits and pieces of agricultural and forestry products; a certain amount of adhesives, curing agents, waterproof agents and demoulding agents are added; a special electrically-controlled fully-automatic hydraulic device with five working positions in six directions is used; a beautiful and firm product with a three-dimensional contouring of curved surfaces and plane surfaces and concave and convex patterns is processed by a one-step moulding mode under the certain pressure and temperature.
Description
Particle moulding time processing goods and manufacture method thereof and special equipment are the new material that belongs to wooden articles such as furniture, door and window, new construction, new manufacture method and the special equipment that uses this method.
Present woodenware such as furniture, a part are to adopt the wooden frame tenon structure, not only need a large amount of work, also need a large amount of timber, thereby the cost height, yield poorly.Have make particieboard earlier after be made into wooden articles again.As United States Patent (USP): the applying date is on March 18th, 1974, and the patent No. is 3927235, and exercise question is " a string flakeboard product ", discloses to utilize the string particle to add cured adhesive etc., and two lateral surfaces have veneer, through the successful plate of heating compacting.Its shortcoming is to be processed into the interlayer flat board, and two lateral surfaces need natural veneer to make panel, and the kind of fibre plant is had certain requirement and restriction.Another EUROPEAN PATENT OFFICE delivered on the phase communique 16 days 87/25 June in 1987, the applying date is on December 8th, 86, the patent No. is 0225629, patent name is " a molded woodwork ", and its content is to make wood-fibred with wet blanking method, mats formation with vacuum pneumatic, complex process, have only the upper die and lower die pressurization, do not form highly bigger three-dimensional contouring, the moulding and the kind of product are restricted.
Purpose of the present invention is exactly in order to overcome the shortcoming in the prior art, simplify the manufacture method of wooden articles such as furniture, enlarge the raw material sources of wooden articles, improve timber utilization rate, produce and have multiple song, plane, highly, width is greater than the three-dimensional contouring of thickness and the wooden articles of ridge design pattern, and provides a kind of manufacture method and a kind of six special equipments to the automatically controlled fully automatic hydraulic of five stations of new these goods.
Technical characterictic of the present invention is as follows:
Particle moulding time processing goods provided by the present invention are molded in the raw material of these goods and contain wood shavings, adhesive, curing agent, waterproofing agent, releasing agent, and the content of each composition is such as down in its raw material:
Wood shavings: adhesive is 1: 0.08～0.17,
Adhesive: curing agent is 1: 0.003～0.005,
Waterproofing agent, releasing agent trace, the wood shavings particle size range is: length is 15～25 millimeters, and width is 2～3 millimeters, and thickness is 0.3～0.4 millimeter; Force plane spend 5 mm wides above be no more than 10%, the powder about wood wool 1.5 mm wides is no more than 65%, goods have multiple song, plane, highly, width is greater than the three-dimensional contouring and the concavo-convexization line pattern of thickness.
Wood shavings in the manufacturing raw material of particle moulding time processing goods of the present invention can replace with farming, forestry products leftover bits and pieces, replace wood shavings as pulverizing the back with cotton bavin bar, cornstalk, peanut shell, bagasse etc., so just enlarge raw material sources, improved timber utilization rate.Adhesive in the goods raw material can be selected urea-formaldehyde resin adhesive or phenolic resin glue for use; Curing agent in the goods raw material can be selected one of following material; Ammonium chloride, oxalic acid, sulfuric acid or hydrochloric acid; Waterproofing agent in the goods raw material can be selected liquid paraffin or sodium metasilicate for use; Releasing agent in the goods raw material can be selected tannic acid or sodium metasilicate for use.Particle moulding time processing goods proposed by the invention, its height, width can be doubly a lot of greater than thickness, have multiple song, flat and stereo moulding, can mold pressing go out multiple ridge design pattern on the goods, the kind of goods is a lot, as: sofa shell, table, chair housing, containers such as various basins, cylinder, various box body combinations furniture etc.
The manufacture method of a kind of particle moulding time processing goods provided by the invention is such: at first with raw material pulverizing, particle drying makes its moisture content be no more than 6%, and wood shavings, adhesive, curing agent are prepared burden by prescription, and added micro-waterproofing agent, releasing agent.All raw materials are mixed, quantitative in the mould of special equipment, the fixed thick once loose batching of mating formation, the corner tamping, pressurization again.The proportioning of its batching is: wood shavings: adhesive is 1: 0.08～0.17, adhesive: curing agent is 1: 0.003～0.005.After the six upper cylinder half carries to the special equipment of five stations reach loose material level, four side cylinders and upper cylinder half then all carry reach closed thickness fast, the raw material that dies cavity is paved is increased and is pressed onto 2.5～3.0MPa, and instantaneous pressure to retract to pressure be 2.0～2.5MPa, through level pressure, pressurize 0.5～5 minute, compress raw material, guarantee the workpiece extrudate density.It is 1.6～2.0MPa that step-down for the first time drops to pressure, and retraction, level pressure, pressurize are 5～10 minutes again, and the raw material generation solidification process that compresses during this makes the interior pressure of the passive formation of workpiece, can discharge volatile matter automatically.It is 0.8～1.6MPa that step-down for the second time drops to pressure, pressurize again, health 8～16 minutes, inner physics, the chemical change of taking place of compacted goods, the remainder volatile matter of having got rid of the goods inside, the material molecular structure of goods is more stable, makes goods firmer, and is not yielding.
The heat medium of hot pressing die module can water or steam or oil, the surface Working Temperature of module between 110 ℃～170 ℃, 130 ℃～140 ℃ optimum temperatures that add man-hour for the wood shavings goods.
Make particle moulding time processing goods according to method provided by the present invention, correctly, consider that reasonably die cavity opens a grade size, shape, the degree of depth, shaping capacity etc., all pavement materials can all place among the profiled member equably, do not need edging and shaping, again owing to reasonably control temperature and pressure, correctly adopt boost, step-down, level pressure, pressurize, health supervisor, make the volatile matter in the blank discharge in good time, avoided the generation of delamination and bubbling phenomenon, made the inner gummed of workpiece firmly.
The special equipment of manufacturing particle moulding time processing goods provided by the present invention, mainly assemble: a parts frame is arranged by following parts, a vertical pressurization oil cylinder is equipped with at its top, in parts frame bottom a workbench is arranged, in the center cavity of parts frame, hot pressing die is arranged.Around the front, rear, left and right of parts frame four operating cylinders are housed, the bottom has one to eject oil cylinder, and the bottom of left and right oil cylinder is equipped with respectively and can be made the upper and lower mobile oil cylinder lifting of this oil cylinder; The module of forming hot pressing die is a hollow-core construction, introduces steam by air inlet pipe, heating module, and by behind the module heated parts, steam is discharged by escape pipe.The module front shape is corresponding with the workpiece shape of being processed, and the module back side has thermal insulation board to prevent that heat scatters and disappears, and module is separately fixed on oil cylinder pressure head and the workbench.This special equipment is furnished with the Hydraulic Power Transmission System of a control cylinder action and the electric control system of operating hydraulically operated transmission system.
The accompanying drawings embodiments of the invention.
Fig. 1, Fig. 2 are the sofa shell stereogram of particle moulding time processing, and it has the handrail on song, plane, the backrest of curved surface, and the base on plane combines.
Fig. 3 represents in the particle moulding time processing production of articles process pressure changing condition in time.In the production process, the module temperature is 130 ℃.At first the raw material that paves in the mould increased and be pressed onto 2.7MPa, and to retract to pressure be 2.4MPa moment that pressurize is after 1.5 minutes, be depressured to for the first time 1.8MPa, retraction level pressure, pressurize 6 minutes are depressured to 1.4MPa for the second time, and pressurize again, health were taken out goods after 10 minutes.
Fig. 4 is for making the special equipment of particle moulding time processing goods: the general illustration of the omnipotent compression molding forming machine of MCJ-750 ton.
Fig. 5 is a main circuit diagram.
Fig. 6, Fig. 7 are automatically controlled circuit diagram.
Fig. 8 is electric cyclematics.
Fig. 9 is the Hydraulic Power Transmission System schematic diagram.
Figure 10 is a sofa shell hot pressing die front view.
Figure 11 is a sofa shell hot pressing die vertical view.
Figure 12 is electric self-locking protecting device schematic diagram.
Figure 13 is operating cylinder elevating mechanism (a 57) enlarged diagram among Fig. 4.
Figure 14 is the material blocking block stereogram in the stock stop.
The special equipment each several part structure of making particle moulding time processing goods is described in more detail below in conjunction with accompanying drawing.
See Fig. 4, a vertical pressurization oil cylinder (68) is housed at the top of parts frame (60), in the bottom of parts frame (60) workbench (44) is arranged, there is hot pressing die (to see Figure 10 in the center cavity of parts frame (60), 11, to be described in detail hereinafter), before the parts frame (60), after, left, four operating cylinders (59) (70) (71) (69) are housed around right, an ejection cylinder (61) is arranged at the bottom, left, the bottom of right oil cylinder (59) (71) is equipped with respectively and can be made on this oil cylinder, the oil cylinder lifting of lower movement (57), this special equipment also are furnished with the Hydraulic Power Transmission System (shown in Figure 9) of a control cylinder action and electric control system (Fig. 6 of operating hydraulically operated transmission system, shown in Figure 7).
See Figure 10,11,12, hot pressing die is mainly by module (42) (43), material jacking mechanism (36), and module positioning limit mechanism, electric self-locking protecting device, stock stop (63) combines. Center module (43) is fixed on the workbench (44), and left and right and front module (43) moves with the movement of hydraulic jack (59), (71) (70); Upper module (42) moves and moves up and down with upper cylinder half (68); Material jacking mechanism (36) moves on the upper act of oil cylinder (61), liftout; The electrical equipment self-locking protecting device is located at the below of handwheel (65), and is fixed on center module (43) base plate (72); Stock stop (63) shakes and moves forward and backward with handwheel (65); The inclined-plane (38) of the boss (35) of left and right module (43) and the groove (37) of rear module (43) and left and right module and front module plays closed position-limiting action when closed.
Material jacking mechanism (36) mainly is assembled by 8 fairleads (74), return spring (77), bulb (78) combination of liftout pallet (76), 4 ejector beams (75), upper and lower layout. The body of fairlead (74) is welded in center module (43) cavity wall, and fairlead (74) interference fit is in body. Ejector beam (75) is subjected to the constraint of fairlead (74), can be in the vertical direction lower mobile. When liftout oil cylinder (61) rises, promote spheroid (78), drive pallet (76), join same ejector beam (75) along about beam trajectory rising of fairlead (74), the workpiece (73) of pressing and forming can be pushed away center die this moment and take out with artificial. After workpiece took out, liftout oil cylinder (61) was restorable, and the material jacking mechanism (36) of this moment is got back to the home position under the elastic force of spring (77), carry out next operation again. Its advantage is the impact that spheroid (78) is not assembled accumulated error, or is not subjected to four fairleads to the restriction of four ejector beam friction sizes, and self-centering action is arranged.
Module positioning limit mechanism comprises that the chamfered portion (38) of the groove (37) at the boss (35) of left and right module rear end, rear module two ends, left and right module leading flank and front module two sides forms module positioning limit mechanism jointly by them.
When four side modules closures reach thickness of workpiece, play position-limiting action, module can not be pushed ahead again. Module inclined-plane (38) matches with two inclined-plane M, M ' of backgauge limited block (63). See Figure 14.
The module of hot pressing die (42) (43) is hollow. (seeing accompanying drawing 10) mainly combined by air inlet (45), gas outlet (46), thermal insulation board (47), back of the body modular surface plate (48). Introduce heat medium by air inlet pipe (45), this medium can be water or steam or oil, heating module, and pass through to be discharged by escape pipe (46) behind the module heated parts. The Modular surface operating temperature between 110 ℃～170 ℃, 130 ℃～140 ℃ optimum temperatures that add man-hour for producing moulded wood chips articles. Module must be done gas pressure test before putting into operation, to guarantee the safety of production process.
Electric self-locking protecting device comprises microswitch (39), feeler lever (40), sliding sleeve (41). As shown in figure 12; microswitch is installed on Figure 11, the center module base plate (72) shown in Figure 12; sliding sleeve (41) shakes handwheel (65) with annular groove, and screw mandrel (64) is rotated; driving sliding sleeve (41) moves forward and backward; when moving to the annular groove position when corresponding with feeler lever (40), feeler lever springs in the annular groove of sliding sleeve, makes microswitch (39) send signal; no power plays self-lock protection effect (seeing Figure 12). Electric Self-locking protecting device integral body also is installed on the center module base plate (72).
Stock stop comprises material blocking block (63), advances screw mandrel (64), sliding sleeve (41), handwheel (65) to combine, and material blocking block is installed on the center module base plate (72), and the shape of material blocking block (63) as shown in figure 14. Promote sliding sleeve (41) when screw mandrel (64) rotates and advance or retreat, material blocking block (63) is advanced or retreat. Before reinforced to hot pressing die, rotate earlier handwheel (65), make screw mandrel (64) promote sliding sleeve (41) and travel forward, promotion material blocking block (63) advances to M ' face and contacts left and right limit module (43), and it is this direction size of workpiece of setting that module (43) is opened grade size. The inclined-plane (38) of module (43) is and the eternal rubbing surface that contact and that form relative motion of material blocking block (63) M face that its gap is very little, the wood shavings material is overflow reveal. And then make module (43) four limit closures. When the hypotenuse closure is joined, namely formed mutual limit effect, also prevented the excessive of raw material.
Oil cylinder lifting (57) is to be assembled by the combination of the major parts such as elevating screw (49), lifting nut (53), bearing (51), (52), (55), bearing block (54), conical gear (50), bevel pinion shaft (56), case (67), gear bush (58), operating cylinder (59) (71), as shown in figure 13, the endoporus of lifting nut (53) cooperates with elevating screw (49), conical gear (50) and bearing (52) are equipped with in the outside, bearing (51), (52) are contained in the bearing block, and bearing block is fixed on the casing (67). The axial region of bevel pinion shaft (56) matches with gear bush (58), gear parts and conical gear (50) engagement. The elevating screw top connects with oil cylinder (59), (71), and casing (67) is fixed on the frame. With spanner slewing circle bevel gear shaft (56), elevating screw (49) is risen or decline, drive oil cylinder (59), (71) rising or decline, thereby reach the purpose of adjusting the Center of Pressure.
See Fig. 9, the Hydraulic Power Transmission System of control cylinder action is mainly formed by 4 loop sets combination configuration: 1. high-pressure low-flow oil pump loop group, (1), (2) (3), (4), (5), high-pressure oil pump (1) is to start continuously fuel feeding, but be subjected to valve (3), (4) control off-load, automatically controlled 2/2-way valve (4) is accepted the signal that electro connecting pressure gauge (28), (29), (30), (31) (32) send, and makes it off-load and not off-load. Check valve (5) prevents that hydraulic oil from refluxing, and (2) are the high-pressure and hydraulic tables. 2. low pressure and mass flow loop sets (6) (7) (8) (9) (10), wherein (6) are low pressure fuel pumps, (7) be the low-pressure hydraulic table, (10) be automatically controlled 2/2-way valve, (9) be low pressure relief valve, it is the moment working voltage that is subjected to the high tension loop group, automatically handles signal off-load that Low-pressure load discharge and above-mentioned electro connecting pressure gauge send. Check valve (8) is to prevent backwash protective device in low pressure fuel pump of high-pressure work oil. 3. the operating cylinder loop sets is carried out the oil path in oil cylinder commutation by three three position four-way electromagnetic valves (13) (14) (15); Six hydraulic control one-way valves (16) (17) (18) (19) (20) (21) carry out self-styled oil pocket pressurize; Three two position three-way valves (22) (23) (24) carry out regularly bypass oil pocket release; Three adjustable throttlings (25) (26) (27) carry out the oil pocket release time; Five electro connecting pressure gauges (28) (29) (30) (31) (32) carry out the level pressure instruction signal; Two collection flow dividers (33) (34) guarantee that four sides move relative to the synchronous coordination of oil cylinder. 4. the control of the three-position four-way valve (11) in the ejection cylinder loop sets (11) (12) ejection cylinder stretches out and bounces back, and choke valve (12) is to regulate the liftout cylinder to stretch out speed. Each branch road oil circuit automatic pressure-maintaining bypass off-load, each oil cylinder backflow automatic deloading does not have impact, working connection superpressure off-load protection, an oil circuit is protected by pressure switch, and fuel feeding oil pump (1) can be with the change automatically unloading of operating pressure and automatically conversion.
The electric control system of operating hydraulically operated transmission system mainly is made up of five partial circuits: 1. main circuit mainly combines (see figure 5) by two threephase asynchronous machines. Threephase asynchronous, 1D(17KW) be used for high-pressure oil pump power, 2D(5.5KW) be used for low pressure fuel pump power. Consider that many woodworking mills power transformer capacity is littler, and the capacity of 1D is bigger, thereby has adopted automatic step-down, startup. 2. control circuit, mainly by following three the electric circuit constitutes: repeat circuit (1J-24J), by the connection combination of auxiliary reclay contact, the signal that the detection loop is sent here is treated to the instruction that can make the oil cylinder correct operation. Testing circuit (1XK-9XK, 1ST-6ST), electro connecting pressure gauge wherein detects each cylinder pressure of indication, and when reaching pre-selection pressure, sends the instruction of carrying out next program, and travel switch accomplishes that bit instruction time relay work guarantees time delayed signal. The crawl main circuit will be combined by button (1DA-13DA). 3. indicating circuit is mainly combined by " automatically " and " crawl " relay indicating light. 4. holding circuit is mainly combined by electrothermal relay, pressure switch, limit switch. Air switch mainly decide circuit overloads and short-circuit protection, fuse are done the partial short-circuit protection, and electrothermal relay is made local overload protection, and pressure switch is made the pressure oil overpressure protection, and limit switch is as avoiding offside. 5. executive circuit is mainly by the electromagnet DT(1DT-13DT of each oil circuit valve of control) combine. Said structure shows in Fig. 5, Fig. 6, Fig. 7, Fig. 8, forms main five partial circuits of electric control system, is for equipment provides power, and operation program is controlled, and matching with Hydraulic Power Transmission System becomes the electrical control hydraulic drive and automatically be System. The relay-contactor logic circuit that the present invention adopts can satisfy each oil cylinder difference " crawl " and one-way automatic circulation. During automatic cycling operating, oil cylinder has been selected three kinds of combining forms, there is the 1-3 stage pressure to keep in the mold process, select arbitrarily, every stage pressure can be adjusted combination with holding time in wider scope, make special equipment enlarge range of application, can adapt to preferably the requirement of multiple product mold pressing one-shot forming technique.
Advantage of the present invention is: because raw material can be selected the leftover bits and pieces of timber and multiple farming, forestry products, enlarged raw material sources, can fully utilize timber again, cost is low; Compare with the wet method that documents is introduced, raw material pulverizing provided by the present invention is to use dry method, and temperature, pressure parameter are all low than wet method in the operating process, and mat formation raw material and whole operation are all easier, can enhance productivity, and reduce cost, and reduce labor intensity; The goods of producing can have multiple straight, curve, bent, plane, highly, width is greater than the three-dimensional contouring and the ridge design pattern of thickness, has aesthetic feeling as engraving, the intensity height is durable.When the wall thickness of goods was 8～15 millimeters, the height of goods can be worked into 760 millimeters, and this also is that the method introduced of documents is inaccessiable.The sofa shell of producing carries out Mechanics Performance Testing according to international standard " ISODP7173 armchair mechanical test method ", and the quiet lotus of the chair back, seat support, handrail and shock loading all reach three grades of strength criterions, satisfies the requirement to furniture intensity fully.(seeing furniture Mechanics Performance Testing report)
Embodiment:
8.4 kilograms of the wood shavings that will meet granularity requirements by the formula rate requirement, urea-formaldehyde resin adhesive 1.73 grams (solids content is 64%) are as adhesive, ammonium chloride 5 grams (25% aqueous solution) are as curing agent, hydraulic pressure paraffin 7 grams are as waterproofing agent, silicic acid 18 grams, stir after the mixing as releasing agent, get 9 kilograms of the raw materials that stir, in the special equipment of packing in the predetermined space of mould.After the operating cylinder work of special equipment reaches material level, the operating cylinder of five stations raises to press and reaches 2.7MPa, moment produces high pressure and retracts to 2.4MPa, and level pressure pressurize 2 minutes drops to 1.8MPa again, level pressure, pressurize 6 minutes, continue to be depressured to for the second time 1.4MPa, health, pressurize 10 minutes, die sinking, liftout takes out the sofa shell that the mold pressing time processing becomes.
Fig. 4 has represented a kind of special equipment mainly by frame (60), five station oil cylinders (59), and (68) (69) (70) (71) eject oil cylinder (61), the structure and the configuring condition of oil cylinder lifting (57).The maximum working pressure (MWP) of main frame oil piping system is 2.5MPa, the upper cylinder half closing time is not more than 30 seconds, pressure oscillation during the work pressurize is not more than 0.2MPa, the oil temperature rise value is not more than 60 ℃, upper cylinder half operating cylinder piston range is 1100 millimeters, and four side operating cylinder piston ranges are 400 millimeters.
Fig. 5, Fig. 6, Fig. 7, represented automatic electrical control system figure, this system is mainly formed by 5 combination of circuits configurations.
From accompanying drawing 5,6,7,8,9, electric control system has mainly been described, Hydraulic Power Transmission System combination configuring condition has been realized the working procedure that main frame automatically carries out work.
Total lock ZK that at first closes makes two threephase asynchronous 1D(17KW) and 2D(5.5KW) starting, after driving the high and low pressure oil pump and rotating, after appointing the air in idle cycle and the crawl adjustment discharge system, it is electric that (1DT) got, (7DT) simultaneously, (11DT) outage.Two oil pump output oil force the upper cylinder piston descending fast through 3-position 4-way electro-hydraulic reversing valve (13) commutation, when touching (2XK) switch, when just upper module will contact working surface, two kinds of requirements are arranged:
1. upper cylinder stops: (1DT) outage, simultaneously (3DT), (5DT) electric, fluid enters the main chamber of four side cylinders respectively through reversal valve (13), (15), make four oil cylinder F.F.s.Low pressure relief valve (9) is opened automatically when pressure surpasses the pressure of low pressure fuel pump (6), and low-lift pump is with automatic deloading.Only remaining high-pressure plunger pump (1) fuel feeding of system pressure, four side cylinders are exchanged work into by F.F., and full fashionable when four side cylinder master cavity pressures, operating pressure is 27kg/cm
2, electro connecting pressure gauge (2YB-G), pointer (3YB-G) all touch higher limit instruction (1DT) must be electric, (3DT), (5DT) outage, reversal valve (14), (15) close valve, and open (13), and promptly there is the double pump fuel feeding in system, and upper cylinder half has been realized F.F..When upper cylinder half pressure during greater than the output pressure of low-lift pump (6), low pressure relief valve is opened again, the low-lift pump off-load, when this moment, the upper cylinder half piston was exchanged work, full fashionable when upper cylinder pressure, electro connecting pressure gauge (1YB-G) was when pointer touches higher limit, instruction (1DT) outage, (7DT), (11DT) electric, shrink pointer this moment and return voluntarily to drop to and be about 24kg/cm
2, pressurize time-delay beginning, two oil pump outputs are oily through overflow valve (3), (9) off-load, delay time after 2 minutes two position three way directional control valve (22), (23), (12DT) of (24), (8DT), (9DT) must be electric, (7DT) outage, the low discharge hydraulic oil reversal valve (22) of flowing through, (23), (24), open hydraulic control one-way valve (17), (18), (21), the hydraulic oil in main chamber is through adjustable throttling (25), (26), (27) release.When hydraulic oil drops to operating pressure 18kg/cm
2The time, electro connecting pressure gauge (1YB-G), (2YB-G (3YB-G), all reaches lower limit, touches electro connecting pressure gauge and sends mark, and instruction (7DT) gets electric, and this moment, each main oil pocket entered secondary pressurize time-delay.Level pressure pressurize 6 minutes.In pressurize time-delay process, dropping to operating pressure as arbitrary oil pocket pressure is 18kg/cm
2The time, low pressure electro connecting pressure gauge (1YB-D), (2YB-D), (3YB-D) independently send signal respectively and make (1DT), (3DT), (5DT) again, make (7DT) outage simultaneously, reduction voltage loop has obtained the repairing supercharging, has realized that promptly the work pressurize is at 16-18kg/cm
2Technological requirement.This kind phenomenon reaches 6 minutes purpose of time-delay.At first make (12DT), (8DT), (9DT) must be electric, (7DT) outage is unloaded and is pressed onto operating pressure 14kg/cm
2, health pressurize 10 minutes, release again is when last table of (YB-D) touches zero point during pressure, instruction (7DT), (11DT), (12DT), (9DT), (8DT) full outage, make (2DT) simultaneously, (4DT), (6DT) must be electric, each loop oil cylinder piston resets.As (1XK), when (4XK) triggering, (7DT), (11DT) get electric off-load to 0 and press.Make reversal valve in the centre position, a circulation has been finished in work, before beginning second round simultaneously, must make (8XK), after (9XK) touching, just can carry out auto-action again.Need only press (2QA) or (3QA) if continue automatic circulation.
2. upper piston is exchanged work into by F.F., and promptly (2XK) triggers back (3DT), (5DT) must be electric, and (11DT) in former operating position, three loops, five operating cylinders advance with fast speeds simultaneously ...Later working procedure is the same.
When not needing the upper cylinder half action, before can making, after, a left side, right cylinder enters automatic circulation separately, and principle is the same.
Claims (18)
1, a kind of particle moulding time processing goods are molded in the raw material of these goods and contain wood shavings, adhesive, curing agent, waterproofing agent, releasing agent, and the content that it is characterized in that each composition in the raw material is such as down:
Wood shavings: adhesive is 1: 0.08～0.17,
Adhesive: curing agent is 1: 0.003～0.005,
Waterproofing agent, remover trace, the wood shavings particle size range is:
Length is 15～25 millimeters, width is 2～3 millimeters, thickness is 0.3～0.4 millimeter, force plane spend 5 mm wides above be no more than 10%, powder about wood wool 1.5 mm wides is no more than 65%, goods have multiple song, plane, highly, width is greater than the three-dimensional contouring and the ridge design pattern of thickness.
2, according to the described particle moulding time processing of claim 1 goods, it is characterized in that the wood shavings in the raw material can replace with farming, forestry products leftover bits and pieces, as: fiber rod materials such as cotton bavin bar, cornstalk, peanut shell, bagasse.
3,, it is characterized in that adhesive can be urea-formaldehyde resin adhesive or phenolic resin glue according to the described particle moulding time processing of claim 1 goods.
4,, it is characterized in that curing agent can select one of following material: ammonium chloride, oxalic acid, sulfuric acid, hydrochloric acid according to the described particle moulding time processing of claim 1 goods.
5,, it is characterized in that waterproofing agent can select liquid paraffin or sodium metasilicate for use according to the described particle moulding time processing of claim 1 goods.
6,, it is characterized in that releasing agent can select tannic acid or sodium metasilicate for use according to the described particle moulding time processing of claim 1 goods.
7, according to the described particle moulding time processing of claim 1 goods, it is characterized in that multiple song, plane, highly, width is meant various sofa shells greater than the goods of the three-dimensional contouring of thickness, the tables and chairs housing, containers such as various basins, cylinder, various box body combinations furniture.
8, a kind of manufacture method of particle moulding time processing goods, at first with raw material pulverizing, particle drying, make its moisture content be no more than 6%, with wood shavings, adhesive, curing agent is by the prescription batching, and add micro-waterproofing agent, releasing agent, mix, quantitative in the mould of special equipment, the fixed thick once loose batching of mating formation, pressurization again, it is characterized in that the proportioning of preparing burden is: wood shavings: adhesive is 1: 0.08～0.17, adhesive: curing agent is 1: 0.003～0.005, after the six upper cylinder half carries to the special equipment of five stations reach loose material level, four side cylinders and upper cylinder half also carry reach closed thickness fast, the raw material that dies cavity is paved is increased and is pressed onto 2.5～3.0MPa, and to have instantaneous pressure to retract to pressure be 2.0～2.5MPa, through level pressure, pressurize 0.5～5 minute, it is 1.6～2.0MPa that step-down for the first time drops to pressure, level pressure again bounces back, pressurize, dwell time is 5～10 minutes, for the second time being depressured to pressure again is 0.8～1.6MPa, pressurize, health 8～16 minutes, module temperature remain between 110 ℃～170 ℃.
9, a kind of special equipment of making particle moulding time processing goods, it is to be assembled by following parts: a parts frame is arranged, a vertical pressurization oil cylinder is arranged at its top, a workbench is arranged at the bottom, in the center cavity of parts frame, hot pressing die is arranged, special equipment is furnished with the Hydraulic Power Transmission System of a control cylinder action and the electric control system of operating hydraulically operated transmission system, it is characterized in that parts frame (60) before, after, a left side, four operating cylinders (59) are housed around right, (69), (70), (71), the bottom has one to eject oil cylinder (61), a left side, right oil cylinder (59), (71) bottom is equipped with respectively and can be made on this oil cylinder, mobile down oil cylinder lifting (57), the module (43) of forming hot pressing die, (42) be hollow-core construction, introduce steam by air inlet pipe (45), heating module, and by behind the module heated parts, steam is discharged by escape pipe (46), the module front shape is corresponding with the workpiece shape of being processed, the module back side has thermal insulation board (47) to prevent that heat scatters and disappears, and module is separately fixed at oil cylinder (59), (71), (70), (69) on pressure head and the workbench (44).
10; the special equipment of manufacturing particle moulding time processing goods according to claim 9; it is characterized in that hot pressing die is mainly by module (42); (43); material jacking mechanism (36); module positioning limit mechanism; electric self-locking protecting device; stock stop combines; center module (43) is fixed on the workbench (44); a left side; the right side and front module (43) are with hydraulic jack (59); (71); moving and move (70); upper module (42) moves up and down with moving of upper cylinder half (68); material jacking mechanism (36) moves on go up lifting of oil cylinder (61); liftout; the electrical equipment self-locking protecting device is located at the below of handwheel (65) and is fixed on the center module base plate (72); stock stop (63) shakes and moves forward and backward a left side with handwheel (65); the groove (37) and the left side of the boss (35) of right module (43) and back module (43); the inclined-plane (38) of right module and front module plays closed position-limiting action when closed.
11, according to the special equipment of the described manufacturing particle moulding of claim 10 time processing goods, it is characterized in that material jacking mechanism (36) mainly is assembled by liftout pallet (76), 4 ejector beams (75), 8 fairleads (74) of arranging up and down, return spring (77), bulb (78), combination, the body of fairlead (74) is welded in center module (43) cavity wall, fairlead (74) interference fit is in body, ejector beam (75) is subjected to the constraint of fairlead (74), can vertically move up and down.
12, according to the special equipment of the described manufacturing particle moulding of claim 10 time processing goods, it is characterized in that module positioning limit mechanism comprises the chamfered portion (38) of groove (37), left and right module leading flank and the front module two sides at the boss (35) of left and right module rear end, back module two ends, form module positioning limit mechanism jointly by them, match with two inclined-plane MM ' of backgauge limited block (63) module inclined-plane (38).
13, according to the special equipment of the described manufacturing particle moulding of claim 10 time processing goods, it is characterized in that electric self-locking guarantor enlarging device comprises microswitch (39), feeler lever (40), sliding sleeve (41), this device is installed on the center module base plate (72).
14, according to the special equipment of the described manufacturing particle moulding of claim 10 time processing goods, it is characterized in that stock stop comprises material blocking block (63), advances screw mandrel (64), sliding sleeve (41), handwheel (65) to combine, play backgauge and electric self-locking action, material blocking block is installed on the center module base plate (72).
15, special equipment according to the described manufacturing particle moulding of claim 9 time processing goods, it is characterized in that oil cylinder lifting (57) is by elevating screw (49), lifting screw (53), bearing (51), (52), (55), bearing block (54), conical gear (50), bevel pinion shaft (56), casing (67), gear bush (58), operating cylinder (59), (71) mechanism of major part composition, the endoporus of lifting screw (53) cooperates with elevating screw (49), conical gear (50) and bearing (52) are equipped with in the outside, bearing (51), (52) be contained in the bearing block, bearing block is fixed on the casing (67), the axial region of bevel pinion shaft (56) cooperates with gear bush (58), gear parts and conical gear (50) engagement, elevating screw top and oil cylinder (59), (71) connect, casing (67) is fixed on the frame.
16, special equipment according to the described manufacturing particle moulding of claim 9 time processing goods, it is characterized in that Hydraulic Power Transmission System is mainly formed by the combination configuration of four loops: 1. high-pressure low-flow oil pump loop group (1), (2), (3), (4), (5), wherein (1) is high-pressure oil pump, (2) be the high-pressure and hydraulic table, (3) be high-pressure overflow valve, (4) be automatically controlled 2/2-way valve, (5) be check valve, 2. be the low pressure and mass flow loop sets: (6), (7), (8), (9), (10), wherein (6) are low pressure fuel pumps, and (7) are the low-pressure hydraulic tables, and (8) are check valves, (9) be low pressure relief valve, (10) being automatically controlled 2/2-way valve, 3. is the operating cylinder loop sets, 4. is to eject oil cylinder loop sets (11), (12), wherein (11) are three-position four-way valves, and (12) are choke valves.
17, special equipment according to the described manufacturing particle moulding of claim 16 time processing goods, it is characterized in that the operating cylinder loop sets is by three three position four-way electromagnetic valves (13), (14), (15), six hydraulic control one-way valves (16), (17), (18), (19), (20), (21), three two position three-way valves (22), (23), (24), three adjustable throttlings (25), (26), (27), five electro connecting pressure gauges (28), (29), (30), (31), (32), two collection flow dividers (33), (34) the combination configuration forms, and has guaranteed the synchronous allelism of relative pressurization oil cylinder.
18; special equipment according to the described manufacturing particle moulding of claim 9 time processing goods; it is characterized in that automatic electrical control system mainly is made up of five partial circuits: 1. main circuit; mainly combine by two threephase asynchronous machines; 2. control circuit; by interrupt circuit (1J-24J); testing circuit (1XK-9XK; 1ST-6ST); crawl circuit (1DA-13DA) combination configuration forms; 3. indicating circuit; mainly combine by " automatically " and " crawl " relay indicating light; 4. holding circuit; mainly by electrothermal relay; pressure switch; limit switch combines, and 5. executive circuit is by the electromagnet DT(1DT-13DT of each oil circuit valve of control) combine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87103724 CN1011675B (en) | 1987-05-23 | 1987-05-23 | Method and special equipment for one-shot shavings-moulded products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87103724 CN1011675B (en) | 1987-05-23 | 1987-05-23 | Method and special equipment for one-shot shavings-moulded products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87103724A CN87103724A (en) | 1988-02-24 |
| CN1011675B true CN1011675B (en) | 1991-02-20 |
Family
ID=4814552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87103724 Expired CN1011675B (en) | 1987-05-23 | 1987-05-23 | Method and special equipment for one-shot shavings-moulded products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1011675B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100393494C (en) * | 2005-12-22 | 2008-06-11 | 昆明人造板机器厂 | Technological method and device for wood particle-moulding tray |
| NL2002167C (en) * | 2008-11-04 | 2010-05-06 | Thermoform Nederland B V | A method for producing a wood wool construction element, a construction element obtained therewith and a production facility therefor. |
| CN102555003B (en) * | 2012-01-11 | 2015-08-05 | 宁波大世界家具研发有限公司 | The integrated wooden door that a kind of Wood Fiber Composites makes |
| JP5513535B2 (en) * | 2012-01-25 | 2014-06-04 | カヤバ工業株式会社 | Circuit pressure control device, hydraulic control circuit using this circuit pressure control device, and hydraulic control circuit for construction machine |
| CN104786338A (en) * | 2014-01-21 | 2015-07-22 | 张双保 | Technology for producing wood particle mould pressed product |
-
1987
- 1987-05-23 CN CN 87103724 patent/CN1011675B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN87103724A (en) | 1988-02-24 |
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