CN212241437U - High-frequency hot-pressing equipment for bamboo arc-shaped recombined material - Google Patents
High-frequency hot-pressing equipment for bamboo arc-shaped recombined material Download PDFInfo
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- CN212241437U CN212241437U CN201922325901.9U CN201922325901U CN212241437U CN 212241437 U CN212241437 U CN 212241437U CN 201922325901 U CN201922325901 U CN 201922325901U CN 212241437 U CN212241437 U CN 212241437U
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Abstract
The utility model provides a bamboo timber arc reorganization material high frequency hot pressing equipment, this equipment includes that high frequency generator connects a control circuit, high frequency generator output voltage is controlled by the transformer, hot pressing platform includes the clamp plate platform, erect and press jar and side pressure jar, establish an perpendicular clamp plate in the top of clamp plate platform, it is connected with high frequency generator's positive pole, it forms the electric field with the clamp plate platform to erect the clamp plate, erect the clamp plate and connect perpendicular pressure jar, set up a side clamp plate in the side reason of clamp plate platform, it is the arcwall face of indent towards the side of clamp plate platform, side pressure jar is connected to the side clamp plate, it sets firmly a backing plate and sets up relatively with the side clamp plate in the frame of clamp plate platform's opposite. The equipment can greatly improve the production efficiency of the recombined material.
Description
Technical Field
The utility model belongs to bamboo timber processing equipment especially provides a bamboo timber arc reorganization timber high frequency hot pressing equipment.
Background
The bamboo arc-shaped recombined material is a plate made by arranging, pressurizing and bonding arc-shaped bamboo plates with smooth inner and outer surfaces in parallel in the same arc-shaped direction. In the production of the recombined material, the performance of the hot press determines the product quality, the productivity and the production cost, and is one of the key devices for production.
In the prior art, the arc bamboo wood is pressurized and recombined by a conventional heating method, and the conventional method has long time and low working efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to improve prior art's problem, provide a bamboo timber arc reorganization material high frequency hot pressing equipment that can improve production efficiency greatly.
The purpose of the utility model is realized like this:
a high-frequency hot-pressing device for bamboo arc-shaped recombined materials comprises an independent high-frequency generator, a control cabinet of the high-frequency generator, a hot-pressing platform, a hydraulic system and an oil cylinder cabinet; the high-frequency generator is connected with a control circuit, and the control circuit outputs voltage to the high-frequency generator and is controlled by a transformer, so that the high-frequency generator can work under different voltages; the control circuit is arranged in the control cabinet independently of the hot-pressing platform;
the hot pressing platform is arranged on a rack and comprises a pressing plate platform, a vertical pressing cylinder and a lateral pressing cylinder, wherein the pressing plate platform is a horizontal plate and is arranged on the rack and connected with a grid of the high-frequency generator, a vertical pressing plate is arranged above the pressing plate platform and connected with an anode of the high-frequency generator, the vertical pressing plate and the pressing plate platform form an electric field, the vertical pressing plate is fixed on a piston rod of the vertical pressing cylinder, one lateral pressing plate is arranged on one lateral edge of the pressing plate platform, the lateral surface of the lateral pressing plate facing the pressing plate platform is an inwards concave arc surface, the lateral pressing plate is fixed on a piston rod of the lateral pressing cylinder, and a base plate is fixedly arranged on the rack on the other lateral edge of the pressing plate platform and is opposite to the lateral pressing plate;
a pipeline in the hydraulic system is connected with the vertical pressure cylinder and the lateral pressure cylinder, a hydraulic motor in the hydraulic system is connected with a motor, and a hydraulic valve is arranged on the pipeline;
the oil cylinder cabinet is connected with the hydraulic system.
Preferably, the vertical pressure cylinder is arranged at the top of the frame; and/or the side pressure cylinder is arranged on the frame in a manner of moving up and down.
Preferably, the lateral pressure cylinder is arranged on a sliding block capable of sliding up and down relative to the rack, a screw hole is formed in the sliding block and is in threaded connection with a lead screw, and the lead screw is rotatably fixed on the rack, so that the lateral pressure cylinder can be lifted and lowered by rotating the lead screw.
Preferably, a metal sheet is arranged on the lower bottom surface of the pressure plate platform and connected with a copper sheet from the grid in the high-frequency generator to be used as the grid of the high-frequency electric field; and/or the backing plate is detachably mounted on the frame; and/or the metal sheet is wrapped outside the vertical pressing plate, and a groove is respectively formed in the metal sheet at the lower end of the front side end face and the rear side end face of the vertical pressing plate.
Preferably, the depth of the groove is 3-4 mm; and/or the width of the groove is 5-8 mm; and/or the thickness of the metal sheet is 5-10 mm.
Preferably, the device also comprises a temperature sensor which is arranged on the frame and used for detecting the temperature of the heated arc-shaped plate blank; and/or the high-frequency generator is connected with a transformer so that the output voltage has a plurality of gears.
A method for manufacturing the bamboo arc-shaped recombined material by using the high-frequency hot-pressing equipment for the bamboo arc-shaped recombined material comprises the following steps:
step 1: feeding, namely forming an arc-shaped plate blank by uniformly bending a plurality of arc-shaped bamboo materials coated with the binder in the same direction, and placing the arc-shaped plate blank on the pressing plate platform of the hot pressing platform;
step 2: pressurizing, starting the vertical pressure cylinder and the lateral pressure cylinder to enable the lateral pressure plate to press against the arc-shaped side face of the arc-shaped plate blank, and enabling the other opposite side face of the arc-shaped plate blank to press against the backing plate to enable the vertical pressure plate to press against the upper top face of the arc-shaped plate blank;
and step 3: heating, starting the high-frequency generator to form an electric field, and heating the plate blank for a set time;
and 4, step 4: keeping the temperature, closing the high-frequency generator, and maintaining the pressure of the vertical pressure cylinder and the side pressure cylinder acting on the arc-shaped plate blank for a set time;
and 5: and decompressing and discharging, and starting the vertical pressure cylinder and the side pressure cylinder to enable the side pressure plates and the vertical pressure plates to leave the arc-shaped plate blank, so that the plate blank becomes the bamboo arc-shaped recombined material and is taken out of the pressure plate platform.
Preferably, in step 2, the pressure given to the arc-shaped plate blank by the vertical pressing plate is smaller than the pressure given to the arc-shaped plate blank by the side pressing plate; and/or the pressure given to the arc-shaped plate blank by the side pressing plates is 3-5MPa, and the pressure given to the arc-shaped plate blank by the vertical pressing plates is 2-3 MPa.
Preferably, in step 3, a fiber optic temperature sensor is used in heating, a probe is inserted into the slab core, and when the temperature of the slab core is detected to reach the required temperature, the electric field is turned off; and/or the heating time is 5-10 min; and/or if the corresponding plate blank is coated with the urea formaldehyde adhesive, the heating temperature is 100-110 ℃; if the corresponding plate blank is coated with the phenolic aldehyde adhesive, the heating temperature is 120-130 ℃; and/or the high-frequency generator provides an output voltage of 3-7Kv and an operating frequency of 6-8 MHz.
Preferably, in step 4, the holding time is 10-20 min.
The utility model provides a bamboo timber arc reorganization material high frequency hot pressing equipment and application method thereof through specific hot pressing platform, can use arc bamboo timber slab preparation arc reorganization material, the utility model discloses pioneering ground uses the high frequency pressurization means in the reorganization of bamboo timber arc reorganization material, has improved production efficiency greatly, in the manufacturing method of arc reorganization material, has provided vertical and a side and has exerted the pressurization mode of lateral pressure in cambered surface one side of slab evagination, has improved product quality.
Furthermore, a pressurizing mode that the vertical pressure is smaller than the lateral pressure is also provided, and the manufacturing quality of the arc-shaped recombined material can be ensured. The arc slab has moisture to carry in the heating and removes the obstructed problem, and uses high frequency generator to do the heating, because the difficult discharge of moisture causes local energy too high and electric field breakdown very easily, and the utility model discloses solve this problem well, made pioneering breakthrough for high-efficient high-quality preparation bamboo timber arc reorganization material.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is the utility model provides a three-dimensional structure schematic diagram of bamboo timber arc reorganization timber high frequency hot pressing equipment.
Fig. 2 is a schematic structural diagram of the front side of the bamboo arc-shaped recombined material high-frequency hot-pressing device shown in fig. 1.
Fig. 3 is a structural schematic diagram of the back of the bamboo arc-shaped recombined material high-frequency hot-pressing device shown in fig. 1.
Fig. 4 is a schematic front structural view of the high-frequency hot-pressing device for the bamboo arc-shaped recombined material shown in fig. 1 except for the high-frequency generator.
Fig. 5 is the utility model provides a structural schematic diagram of clamp plate platform among bamboo timber arc reorganization timber high frequency hot pressing equipment.
Fig. 6 is a schematic structural diagram of a high-voltage copper sheet of a grid and an anode, wherein the high-voltage copper sheet is connected with a pressure plate platform and a vertical pressure plate on a hot-pressing platform by a high-frequency generator.
Fig. 7 is a schematic structural view of the vertical pressing plate.
Fig. 8 is a schematic structural view of a water storage groove on the vertical pressing plate.
FIG. 9 is a schematic view of the structure of the side press plates.
FIG. 10 is a schematic view of the structure of the side press plate capable of lifting relative to the frame.
Detailed Description
As shown in fig. 1 to 3, the high-frequency hot-pressing device for bamboo arc-shaped recombined materials provided by the utility model comprises an independent high-frequency generator and a control cabinet thereof, a hot-pressing platform, a hydraulic system and an oil cylinder cabinet;
the high-frequency generator is arranged in a control cabinet 1, connected in a circuit, connected with a power supply, the circuit basically belongs to the prior art, and comprises a power supply, a rectifying circuit, a high-frequency oscillating circuit, a matching circuit and a control circuit, wherein the matching circuit comprises a transformer. The control circuit is controlled by the transformer to output voltages of different high and low gears to the high-frequency generator, so that the high-frequency generator can work under different voltages; the circuit board and the high-frequency generator are arranged in the control cabinet 1 independently of the hot-pressing platform, and the grid 2 and the anode 3 which are made of copper sheets are connected with corresponding elements on the hot-pressing platform.
The function of high frequency generator is for providing the required heat energy of gluing agent solidification for the shaping hot press, still is equipped with cooling system in the switch board, for the cooling of switch board, guarantees the normal work of switch board.
The utility model provides an equipment adopts the high frequency electric field heating, and its principle is to applying the high frequency electric field to the panel, makes the polarity molecule in panel and the gluing agent, including the hydrone, quick repetitive motion leads to the violent friction production heat in intermolecular under the effect of high frequency electric field to make gluing agent fast curing. The press has short hot pressing time, high glue curing speed and high production efficiency especially for workpieces with large thickness.
The hot pressing platform is arranged on a frame A and comprises a pressing plate platform 4, a vertical pressing cylinder 5 and a side pressing cylinder 6, wherein the pressing plate platform 4 is a horizontal plate and is arranged on the frame 1 and connected with a grid 2 of a high-frequency generator, a vertical pressing plate 51 is arranged above the pressing plate platform 4, the vertical pressing plate 51 is connected with an anode 3 of the high-frequency generator, and an electric field and a heating space are formed between the vertical pressing plate 51 and the pressing plate platform 4. The vertical pressure plate 51 is fixed on the piston rod of the vertical pressure cylinder 5, and the vertical pressure cylinder 5 is arranged on the top of the frame A. One side edge of the pressure plate platform 4 is provided with a side pressure plate 61, the side surface of the side pressure plate 61 facing the pressure plate platform 4 is an inwards concave arc surface 61a (see fig. 9), the side pressure plate 61 is fixed on a piston rod of the side pressure cylinder 6, a backing plate 7 is fixedly arranged on a rack A on the other side edge of the pressure plate platform 4 and is opposite to the side pressure plate 61, and the backing plate 7 is detachably arranged on the rack A.
A pipeline B in the hydraulic system is connected with the vertical pressure cylinder 5 and the lateral pressure cylinder 6, a hydraulic motor in the hydraulic system is connected with a motor 8, and a hydraulic valve 9 is arranged on the pipeline;
the cylinder cabinet 10 is connected to a hydraulic system to store hydraulic oil.
In order to adapt to bamboo slabs with various chord lengths, the side pressure plates 61 and the side pressure cylinders 5 connected with the side pressure plates are arranged on the frame A in a vertically movable mode. Specifically, as shown in fig. 2 and 10, the lateral pressure cylinder 6 is disposed on a slide block that can slide up and down relative to a slide rail on the frame a, the slide block is provided with a screw hole, a screw rod a is screwed, the screw rod a is rotatably fixed on the frame a, a hand wheel a1 is disposed on the upper portion of the screw rod, and the lateral pressure cylinder 6 can be lifted and lowered by rotating the screw rod a through the hand wheel.
The lower bottom surface of the pressure plate platform 4 is provided with a metal sheet which is connected with a copper sheet from the grid 2 in the high-frequency generator and is used as a grid of a high-frequency electric field.
As shown in fig. 7, the vertical pressing plate 51 is covered with a metal sheet 51a, and a groove 51b is formed in each of the metal sheets at the lower ends of the front and rear side end surfaces of the vertical pressing plate 51. The depth of the groove 51b may be 3-4 mm; the width of the groove 51b may be 5-8 mm. In the present embodiment, the depth of the groove 51b is 3mm and the width is 6 mm. And correspondingly, the thickness of the metal sheet 51a is 5 mm.
Set up the recess on the sheetmetal 51a on vertical clamp plate 51 because in electric field heating process, the arc bamboo chip is inside to have the evaporation of moisture, forms the drop of water on attaching to the sheetmetal, flows to the inside formation of arc bamboo chip and punctures in order to prevent that the drop of water from gathering, establishes this recess, stores a small amount of moisture of evaporation, after the suppression of arc recombination material is accomplished, wipes the moisture in the recess futilely. Some water absorbing material may also be provided in the recess to increase the water storage capacity of the recess.
The utility model provides an equipment, with high frequency generator and control system independent, place on hot pressing platform's the left side alone, reduced hot-pressing veneer operation complexity, simplified hot-pressing veneer equipment.
The device can also comprise an optical fiber temperature sensor 11 which is arranged on the machine frame A and is used for detecting the temperature of the heated arc-shaped plate blank. When the temperature measuring device is used, the probe of the optical fiber temperature sensor 11 is contacted with or close to the temperature measuring area of the arc-shaped plate blank, and the temperature value of the area can be measured.
Preferably, the high frequency generator is connected to a transformer so that the output voltage has a plurality of steps.
The method for manufacturing the bamboo arc-shaped recombined material by using the high-frequency hot-pressing equipment for the bamboo arc-shaped recombined material comprises the following steps:
step 1: feeding, namely forming an arc-shaped plate blank by uniformly bending a plurality of arc-shaped bamboo materials coated with the binding agent in the same direction, and putting the arc-shaped plate blank on a pressing plate platform 4 of a hot pressing platform from a feeding hole C (shown in figure 1).
Step 2: pressurizing, namely starting the vertical pressure cylinder 5 and the side pressure cylinder 6 to enable the side pressure plate 6 to be pressed against the arc-shaped side surface of the arc-shaped plate blank (not shown in the figure), and pressing the other opposite side surface of the arc-shaped plate blank against the backing plate 7; so that the vertical pressing plate 51 is pressed against the upper top surface of the arc-shaped slab.
In step 2, the pressure given to the arc-shaped slabs by the vertical pressing plates 51 is smaller than the pressure given to the arc-shaped slabs by the side pressing plates 61. Generally, the pressure given to the arc-shaped slab by the side pressing plates 61 can be 3-5MPa, and the pressure given to the arc-shaped slab by the vertical pressing plates 51 can be 2-3 MPa. The utility model discloses in, when using above-mentioned equipment, vertical, lateral pressure are different. In the hot pressing process, large pressure is mainly applied to the lateral direction of the plate blank to promote the plate blank to be pressed and glued; the vertical direction only needs relatively small pressure to keep the plate blank not deformed in the hot pressing process.
And step 3: heating, starting a high-frequency generator to form an electric field, and dividing the output voltage of the high-frequency generator into five gears of 3-7Kv according to the early-stage pretreatment of the arc bamboo chips. Too high voltage, electric field intensity is big on the left, and the arc is because shape itself, and the moisture transportation is obstructed in the removal of electric field direction, causes local energy too high easily to electric field breakdown, voltage is low excessively, and electric field intensity is on the small side, and heating time is too long, so according to the size and specification of the arc bamboo chip of difference, chooses different voltage gears. The bamboo chips are thick and long, and high-voltage gears are used. The operating frequency is, for example, 6.78MHz, belonging to the high frequency range. The load mode adopts a high-frequency feeder line connected with a parallel flat working capacitor. The insulating material is epoxy resin and polytetrafluoroethylene. Because the current frequency is high, the power is large, and the insulating material must have certain thickness, the epoxy resin is selected as the main body.
In step 3, if the corresponding slab is coated with the urea formaldehyde adhesive, the heating temperature is preferably 105 ℃; if the corresponding slab is coated with phenolic adhesive, the heating temperature is preferably 125 ℃.
Setting time for heating the plate blank; the setting time may be determined by experiment, or the heating may be stopped by inserting a probe into the slab core using the optical fiber temperature sensor 11 and measuring the temperature of the slab core to reach the setting temperature, and then turning off the electric field. Using a high-frequency generator to reach the set temperature, and the required heating time is 5-10 minutes. The conventional method used in the prior art for manufacturing the recombined material needs several hours for common heating time, and compared with the prior art, the utility model uses the high-frequency heater, the efficiency is improved by tens times or even tens of times.
And 4, step 4: keeping the temperature, closing the high-frequency generator, and maintaining the pressure of the vertical pressure cylinder 5 and the lateral pressure cylinder 6 acting on the arc-shaped plate blank for a set time; the holding time is generally 10 to 20 minutes.
And 5: and (3) decompressing and discharging, starting the vertical pressure cylinder 5 and the side pressure cylinder 6, so that the side pressure plate 61 and the vertical pressure plate 51 are separated from the arc-shaped plate blank, and the plate blank becomes the bamboo arc-shaped recombined material and is taken out of the pressure plate platform 4 from a discharge hole D (shown in figure 3).
The above description is the preferred embodiment of the present invention and the technical principle applied by the same, and for those skilled in the art, without departing from the spirit and scope of the present invention, any obvious changes such as equivalent transformation, simple replacement, etc. based on the technical solution of the present invention all belong to the protection scope of the present invention.
Claims (6)
1. A high-frequency hot-pressing device for an arc-shaped reconstituted bamboo of a bamboo material is characterized by comprising an independent high-frequency generator and a control cabinet thereof, a hot-pressing platform, a hydraulic system and an oil cylinder cabinet; the high-frequency generator is connected with a control circuit, and the control circuit outputs voltage to the high-frequency generator and is controlled by a transformer, so that the high-frequency generator can work under different voltages; the control circuit is arranged in the control cabinet independently of the hot-pressing platform;
the hot pressing platform is arranged on a rack and comprises a pressing plate platform, a vertical pressing cylinder and a lateral pressing cylinder, wherein the pressing plate platform is a horizontal plate and is arranged on the rack and connected with a grid of the high-frequency generator, a vertical pressing plate is arranged above the pressing plate platform and connected with an anode of the high-frequency generator, the vertical pressing plate and the pressing plate platform form an electric field, the vertical pressing plate is fixed on a piston rod of the vertical pressing cylinder, one lateral pressing plate is arranged on one lateral edge of the pressing plate platform, the lateral surface of the lateral pressing plate facing the pressing plate platform is an inwards concave arc surface, the lateral pressing plate is fixed on a piston rod of the lateral pressing cylinder, and a base plate is fixedly arranged on the rack on the other lateral edge of the pressing plate platform and is opposite to the lateral pressing plate;
a pipeline in the hydraulic system is connected with the vertical pressure cylinder and the lateral pressure cylinder, a hydraulic motor in the hydraulic system is connected with a motor, and a hydraulic valve is arranged on the pipeline;
the oil cylinder cabinet is connected with the hydraulic system.
2. The high-frequency hot-pressing equipment for the bamboo arc-shaped recombined material as claimed in claim 1, wherein the vertical pressure cylinder is arranged at the top of the rack; and/or
The side pressure cylinder is arranged on the frame in a manner of moving up and down.
3. The high-frequency hot-pressing apparatus for bamboo curved scrip as claimed in claim 2, wherein said side press cylinder is disposed on a slide block capable of sliding up and down relative to said frame, said slide block is provided with a screw hole for screw connection with a lead screw, said lead screw is rotatably fixed on said frame, so that said side press cylinder can be lifted up and down by rotating said lead screw.
4. The high-frequency hot-pressing equipment for the bamboo arc-shaped recombined material as claimed in any one of claims 1 to 3, wherein a metal sheet is arranged on the lower bottom surface of the pressing plate platform and connected with a copper sheet from the grid in the high-frequency generator to be used as the grid of the high-frequency electric field; and/or
The backing plate is detachably arranged on the rack; and/or
The metal sheet is wrapped outside the vertical pressing plate, and a groove is formed in each metal sheet at the lower end of the front side end face and the lower end of the rear side end face of the vertical pressing plate.
5. The high-frequency hot-pressing device for the bamboo arc-shaped scrimber as claimed in claim 4, wherein the depth of the groove is 3-4 mm; and/or
The width of the groove is 5-8 mm; and/or
The thickness of the metal sheet is 5-10 mm.
6. The high-frequency hot-pressing device for the bamboo arc-shaped recombined material as claimed in claim 1, further comprising a temperature sensor arranged on the frame for detecting the temperature of the heated arc-shaped plate blank; and/or
The high-frequency generator is connected with a transformer so that the output voltage has a plurality of gears.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822246456 | 2018-12-29 | ||
| CN2018222464562 | 2018-12-29 |
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| Publication Number | Publication Date |
|---|---|
| CN212241437U true CN212241437U (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922325901.9U Active CN212241437U (en) | 2018-12-29 | 2019-12-23 | High-frequency hot-pressing equipment for bamboo arc-shaped recombined material |
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| CN (1) | CN212241437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220111552A1 (en) * | 2020-10-12 | 2022-04-14 | International Center For Bamboo And Rattan | High-frequency hot-pressing continuous automatic production line for dimensional bamboo timbers, and production method thereof |
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2019
- 2019-12-23 CN CN201922325901.9U patent/CN212241437U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220111552A1 (en) * | 2020-10-12 | 2022-04-14 | International Center For Bamboo And Rattan | High-frequency hot-pressing continuous automatic production line for dimensional bamboo timbers, and production method thereof |
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