阅读说明：本技术 一种超厚木竹质空芯成型墙板的连续成型方法及成型装置 (Continuous forming method and forming device for super-thick wood-bamboo hollow formed wallboard ) 是由 刘乐群 刘方成 于 2019-10-25 设计创作，主要内容包括：本发明涉及一种空芯墙板成型装置及成型方法。目的是提供一种超厚木竹质空芯成型墙板连续成型装置及成型方法,该成型装置及成型方法应能制备出超厚的木竹质空芯成型墙板,有效增强木竹质空芯成型墙板的冲压方向的抗压强度和尺寸稳定性,实现板材各向性能均衡及形态稳定；具有工艺简单、生产效率高、可连续化生产,降低生产成本的特点。技术方案是：一种超厚木竹质空芯成型墙板的连续成型的方法,按以下步骤进行：1)模压内腔内的冲压头在动力机构驱动下沿着竖直导轨上下往复直线运动,同时与竖直布置在模压内腔内且与冲压头穿套配合的若干内模成型管和若干加强筋作相对运动；所述模压内腔的内壁以及内模成型管管壁均由热源加热机构加热升温。(The invention relates to a hollow wallboard forming device and a forming method. The forming device and the forming method can be used for preparing the super-thick wood-bamboo hollow formed wallboard, effectively enhance the compression strength and the dimensional stability of the wood-bamboo hollow formed wallboard in the stamping direction and realize the balanced performance and the stable shape of the board in all directions; the method has the characteristics of simple process, high production efficiency, continuous production and low production cost. The technical scheme is as follows: a method for continuously forming super-thick wood-bamboo hollow forming wallboard comprises the following steps: 1) the punching head in the die pressing inner cavity is driven by a power mechanism to reciprocate linearly up and down along the vertical guide rail, and simultaneously moves relative to a plurality of inner die forming pipes and a plurality of reinforcing ribs which are vertically arranged in the die pressing inner cavity and are in sleeve fit with the punching head; the inner wall of the mould pressing inner cavity and the pipe wall of the inner mould forming pipe are heated by a heat source heating mechanism to rise temperature.)

1. A continuous forming method of super-thick wood-bamboo hollow forming wallboard comprises the following steps:

1) a stamping head (3) in the die pressing inner cavity (M) is driven by a power mechanism to reciprocate linearly up and down along a vertical guide rail, and simultaneously moves relatively with a plurality of inner die forming pipes (4) and a plurality of reinforcing ribs (5) which are vertically arranged in the die pressing inner cavity and are in sleeve fit with the stamping head; the inner wall of the mould pressing inner cavity and the pipe wall of the inner mould forming pipe are heated by a heat source heating mechanism to rise the temperature;

2) when the stamping head moves upwards until a distance is left from the upper end opening of the stamping plate, the top end inlet of the stamping inner cavity is opened; the feeding device (17) uniformly applies wood and bamboo crushed aggregates accompanied with glue into the mould pressing plate through the top inlet, and the wood and bamboo crushed aggregates fall into the mould pressing inner cavity and are supported by the bottom plate (1);

3) the punching head moves downwards under the traction of the power mechanism to enter a die pressing inner cavity, and the added wood and bamboo crushed materials are punched, so that the wood and bamboo crushed materials and the reinforcing ribs form a tightly combined plate blank, the plate blank and a bottom plate connected to the bottom end of the reinforcing rib move downwards for a plurality of distances together when being heated and heated in the die pressing inner cavity; the inner mold forming pipe forms a through hole on the plate blank;

4) the stamping head moves upwards again until the stamping head is separated from the upper end opening of the die pressing inner cavity by a certain distance, and the top end inlet of the die pressing inner cavity is opened again; the feeding device uniformly applies wood and bamboo crushed aggregates accompanied with glue into the die pressing inner cavity through the top inlet, and the wood and bamboo crushed aggregates fall into the die pressing inner cavity and are laid on the upper part of the preliminarily formed plate blank in the previous step; the punching head punches the added crushed aggregates, and simultaneously, the wall part of the mould pressing inner cavity and the pipe wall of the internal mould forming pipe continuously heat the formed plate blank at high temperature, so that the adhesive is quickly cured in the process of each time the plate blank is punched and moved;

5) step 3) and step 4) are repeatedly circulated, and the wood and bamboo crushed aggregates are subjected to continuous circulation operation of feeding, stamping and simultaneous heating inside and outside, so that a continuously formed plate blank is formed; the plate blank is gradually moved out of the mould pressing inner cavity downwards to form a final wood-bamboo hollow molding wallboard finished product (K);

the mould pressing inner cavity is surrounded by two mould pressing plates (12) keeping a distance in the thickness direction of the inner cavity and two thickness gauges (2) arranged at two ends of the inner cavity in the width direction; the upper end and the lower end of the mould pressing inner cavity are both open;

the internal mold forming pipe is internally provided with a double-layer heating pipe communicated with a heat source heating mechanism, and the heat source heating mechanism arranged outside the device is provided with a pipe inlet and outlet interface at the top end of the internal mold forming pipe to form a circulation loop for circulating a liquid heat-conducting medium.

2. The continuous forming method of the super-thick wood-bamboo hollow core forming wallboard according to claim 1, characterized in that: the outer diameter of an inner sleeve (4-1) in the double-layer heating pipe is smaller than the inner diameter of an outer sleeve (4-2), the bottom end of the outer sleeve is closed, and the bottom end of the inner sleeve is open and keeps a distance with the bottom end of the outer sleeve so as to allow a liquid heat-conducting medium to flow; the top of the inner sleeve and the top of the outer sleeve are fixed on a cross beam (7) on the upper portion of the rack, the top of the inner sleeve penetrates through the cross beam of the rack and then is communicated with an output pipe (20-1) of the heat source heating mechanism, and the top of the outer sleeve is communicated with an input pipe (20-2) of the heat source heating mechanism through a plurality of thin pipes (7-1) buried in the cross beam of the rack in an embedded mode, so that a heating closed inner circulation route in which a heat conducting medium enters from the inner sleeve to be heated and flows out from the outer sleeve is formed.

3. The continuous forming method of the super-thick wood-bamboo hollow core forming wallboard according to claim 2, characterized in that: the bottom plate is pulled by the reinforcing ribs, and the reinforcing ribs are released by a release mechanism arranged at the top end of the equipment, vertically downwards pass through the overshoot pressure head and then are connected with the bottom plate.

4. The continuous forming method of the super-thick wood-bamboo hollow core forming wallboard according to claim 3, characterized in that: the reinforcing ribs are uniformly embedded in the plate blank, and each reinforcing rib keeps a distance from the hole and the outer surface of the plate blank.

5. The continuous forming device of the super-thick wood-bamboo hollow forming wallboard comprises a mould pressing inner cavity (M) which is vertically arranged and has a rectangular cross section with open upper and lower ends, a plurality of inner mould forming pipes (4) which are vertically arranged in the mould pressing inner cavity and the top ends of which are fixed on a cross beam of an upper rack, and a punching head (3) which is matched with the cross section of the mould pressing inner cavity in shape and can move up and down in the mould pressing inner cavity under the drive of a power mechanism; the die pressing inner cavity is surrounded by two die pressing plates (12) keeping parallel distance in the thickness direction of the die pressing inner cavity and two thickness gauges (2) arranged on two sides of the die pressing inner cavity in the width direction; the stamping heads are matched with the inner die forming pipe in a one-to-one moving mode through a plurality of sliding holes vertically formed in the stamping heads; a heating pipe communicated with a heat source heating mechanism is arranged in the mould pressing plate; the frame is also provided with a feeding device (17) for adding wood and bamboo crushed aggregates into the mould pressing inner cavity;

the method is characterized in that: the inner mold forming pipe is a double-layer heating pipe internally provided with a heating mechanism communicated with a heat source; the heat source heating mechanism arranged outside the device is communicated with the pipe inlet and outlet interface at the top end of the internal mold forming pipe to form a loop for conveying the liquid heat-conducting medium.

6. The continuous forming device of super thick wood-bamboo hollow core forming wall board according to claim 5, characterized in that:

the outer diameter of an inner sleeve (4-1) in the double-layer heating pipe is smaller than the inner diameter of an outer sleeve (4-2), the bottom end of the outer sleeve is closed, the bottom end of the inner sleeve is open, and a space is kept between the bottom end of the inner sleeve and the bottom end of the outer sleeve to allow a liquid heat-conducting medium to flow; the top of the inner casing and the top of the outer casing are fixed on a cross beam (7) on the upper portion of the rack, the top of the inner casing penetrates through the cross beam of the rack and then is communicated with an output pipe (20-1) of the heat source heating mechanism, the top of the outer casing sequentially penetrates through a plurality of thin pipes buried in the cross beam of the rack and then is communicated with an input pipe (20-2) of the heat source heating mechanism, the thin pipes penetrate through a closed ring (7-2) between the outer casing and the inner casing and enter a space between the inner casing and the outer casing, a heat conducting medium is formed and enters the heating from the inner casing, and a heating closed inner circulation route flows out of the outer casing and the thin pipes.

7. The continuous forming device of super thick wood-bamboo hollow core forming wall board as claimed in claim 6, wherein: the heat source heating mechanism is a heat conduction oil boiler, or a steam heating boiler, or a centralized steam heating system.

8. The continuous forming device of super thick wood-bamboo hollow core forming wall board as claimed in claim 7, wherein: the wall surface of the mould pressing inner cavity is provided with a plurality of vertically arranged bulges, and the bulges correspond to surface grooves (K3) of the wood-bamboo hollow forming wallboard so as to increase the surface decoration effect of the wood-bamboo hollow forming wallboard.

9. The continuous forming device of super thick wood-bamboo hollow core forming wall board according to claim 8, characterized in that: a bottom plate (1) which is horizontally arranged and can move up and down in the die pressing inner cavity is also arranged below the punching head; the periphery of the bottom plate is matched with the cross section profile of the inner cavity, and a plurality of sliding holes which are in sliding fit with the inner mold forming pipe are also arranged on the bottom plate; the bottom plate and the stamping head are respectively provided with a plurality of through holes, and a plurality of reinforcing ribs (5) respectively penetrate through the through holes in the stamping head from top to bottom and then are fixed on the bottom plate in a one-way mode; the reinforcing ribs are respectively and gradually released by a plurality of releasing mechanisms arranged at the top of the frame.

10. The continuous forming device of super thick wood-bamboo hollow core forming wall board as claimed in claim 9, wherein: two ends of the stamping head can be vertically and slidably positioned on a support column of the rack through a vertically arranged guide rail mechanism; the guide rail mechanism comprises a plurality of vertical guide rails (13) arranged on the stand columns on the two sides and a plurality of sliding blocks (14) which are fixed on the periphery of the stamping head and are matched with the vertical guide rails one by one.

Technical Field

The invention relates to a hollow wallboard forming device and a forming method; in particular to a continuous molding device and a molding method of super-thick wood-bamboo hollow molding wall boards.

Background

Wood-structure buildings are the most important form of construction in china for thousands of years. Since the last 60 s, the timber shortage caused by the random felling of forest resources, and together with the concept error, the timber structure building is completely replaced by the reinforced concrete building. At present, wood structure buildings in developed countries generally account for more than 45% of the total building amount, and North America countries achieve more than 85%. The remarkable advantage of developing the wood structure building in these countries is that the forest resources of the countries are extremely abundant. Along with the rapid development of economy in China, the desire of people for a beautiful and comfortable living environment is increasingly urgent, wood structure buildings are rapidly developed again in China, but the development is still stopped due to the constraint of serious shortage of wood resources, and the search for wallboards with similar performance and capable of replacing wood is an extremely urgent task in the field of buildings in China.

The artificial board industry in China is huge, the total amount reaches 160% of the total amount of the artificial boards in the world, and a suitable board variety is hopefully found to replace wood as a wood structure wall material. The existing national situation that wood resources are extremely deficient in China determines that the artificial board made of the bamboo and wood cutting and processing residues is the only choice for developing the wood structure building wall material. The artificial boards made of bamboo and wood cutting residues mainly refer to medium density fiberboard and flakeboard, because wood is a heat insulating material, the existing manufacturing process cannot produce boards with the thickness of more than 5 centimeters, and the artificial board industry cannot provide the engineered wallboard meeting the building specification for wood structure buildings at present. Therefore, the super-thick artificial board is developed to replace wood for the wall material of the wood structure building, has simple process and lower cost, can be industrially produced in large scale, and becomes a common important technical problem-breaking target of the wood structure building industry and the artificial board industry.

Disclosure of Invention

The invention aims to overcome the defects of the background technology and provides a continuous forming device and a forming method for an ultra-thick wood-bamboo hollow formed wallboard, the forming device and the forming method can be used for preparing the ultra-thick wood-bamboo hollow formed wallboard, the compression strength and the dimensional stability of the wood-bamboo hollow formed wallboard in the stamping direction are effectively enhanced, and the balance of performance and the stable form of each direction of the board are realized; the method has the characteristics of simple process, high production efficiency, continuous production and low production cost.

The technical scheme provided by the invention is as follows:

a method for continuously forming super-thick wood-bamboo hollow forming wallboard comprises the following steps:

1) the punching head in the die pressing inner cavity is driven by a power mechanism to reciprocate linearly up and down along the vertical guide rail, and simultaneously moves relative to a plurality of inner die forming pipes and a plurality of reinforcing ribs which are vertically arranged in the die pressing inner cavity and are in sleeve fit with the punching head; the inner wall of the mould pressing inner cavity and the pipe wall of the inner mould forming pipe are heated by a heat source heating mechanism to rise the temperature;

2) when the stamping head moves upwards until a distance (preferably 20-80 mm) is left from the upper end opening of the stamping plate, the top end inlet of the stamping inner cavity is opened; uniformly applying wood and bamboo crushed aggregates accompanied with glue into the mould pressing plate through a top inlet by the feeding device, wherein the wood and bamboo crushed aggregates fall into the mould pressing inner cavity and are supported by the bottom plate;

3) the punching head moves downwards under the traction of the power mechanism to enter a die pressing inner cavity, the added wood and bamboo crushed aggregates are punched, the wood and bamboo crushed aggregates and the reinforcing ribs form a tightly combined plate blank, the plate blank is heated in the die pressing inner cavity, and the inner die forming pipe forms a through hole on the plate blank; simultaneously, the plate blank and the bottom plate connected to the bottom end of the reinforcing rib move downwards for a plurality of distances (preferably 10-50 mm);

4) the stamping head moves upwards again until the stamping head is separated from the upper end opening of the die pressing inner cavity by a certain distance, and the top end inlet of the die pressing inner cavity is opened again; the feeding device uniformly applies wood and bamboo crushed aggregates accompanied with glue into the die pressing inner cavity through the top inlet, and the wood and bamboo crushed aggregates fall into the die pressing inner cavity and are laid on the upper part of the formed plate blank in the previous step; the punching head punches the added crushed aggregates, and simultaneously the wall part of the mould pressing inner cavity and the pipe wall of the internal mould forming pipe continuously perform internal and external high-temperature heating on the formed plate blank, so that the adhesive is quickly cured in the process of each time the plate blank is punched and moved;

5) step 3) and step 4) are repeatedly circulated, and the wood and bamboo crushed aggregates are subjected to continuous circulation operation of feeding, stamping and simultaneous heating inside and outside, so that a continuously formed plate blank is formed; the plate blank is gradually moved out of the mould pressing inner cavity downwards to form a final wood-bamboo hollow molding wallboard finished product;

the mould pressing inner cavity is defined by two mould pressing plates keeping a distance in the thickness direction of the inner cavity and two thickness gauges arranged at two ends of the inner cavity in the width direction; the upper end and the lower end of the mould pressing inner cavity are both open;

the internal mold forming pipe is internally provided with a double-layer heating pipe communicated with a heat source heating mechanism, and the heat source heating mechanism arranged outside the device is provided with a pipe inlet and outlet interface at the top end of the internal mold forming pipe to form a circulation loop for circulating a liquid heat-conducting medium.

The outer diameter of an inner layer sleeve in the double-layer heating pipe is smaller than the inner diameter of an outer layer sleeve, the bottom end of the outer layer sleeve is closed, and the bottom end of the inner layer sleeve is open and keeps a distance with the bottom end of the outer layer sleeve so as to allow a liquid heat-conducting medium to flow; the top of the inner sleeve and the top of the outer sleeve are fixed on a cross beam on the upper portion of the rack, the top of the inner sleeve penetrates through the cross beam of the rack and then is communicated with an output pipe of the heat source heating mechanism, the top of the outer sleeve is communicated with an input pipe of the heat source heating mechanism through a plurality of thin pipes buried in the cross beam of the rack, and a heating closed inner circulation route in which a heat conducting medium enters from the inner sleeve for heating and flows out from the outer sleeve is formed.

The bottom plate is pulled by the reinforcing ribs, and the reinforcing ribs are released by a release mechanism arranged at the top end of the equipment, vertically downwards pass through the overshoot pressure head and then are connected with the bottom plate.

The reinforcing ribs are uniformly embedded in the plate blank, and each reinforcing rib keeps a distance from the hole and the outer surface of the plate blank.

The continuous forming device for the super-thick wood-bamboo hollow forming wallboard comprises a vertically arranged mould pressing inner cavity with a rectangular cross section, a plurality of inner mould forming pipes and a punching head, wherein the upper end and the lower end of each inner mould forming pipe are both open, the inner mould forming pipes are vertically arranged in the mould pressing inner cavity, the top ends of the inner mould forming pipes are fixed on a cross beam of an upper rack, the punching head is matched with the cross section of the mould pressing inner cavity in shape, and the punching head is driven by a power; the mould pressing inner cavity is defined by two mould pressing plates which keep parallel distance in the thickness direction of the mould pressing inner cavity and two thickness gauges which are arranged at the two sides of the mould pressing inner cavity in the width direction; the stamping heads are matched with the inner die forming pipe in a one-to-one moving mode through a plurality of sliding holes vertically formed in the stamping heads; a heating pipe communicated with a heat source heating mechanism is arranged in the mould pressing plate; the frame is also provided with a feeding device for adding wood and bamboo crushed aggregates into the mould pressing inner cavity;

the method is characterized in that: the inner mold forming pipe is a double-layer heating pipe internally provided with a heating mechanism communicated with a heat source; the heat source heating mechanism arranged outside the device is communicated with the pipe inlet and outlet interface at the top end of the internal mold forming pipe to form a loop for conveying the liquid heat-conducting medium.

The outer diameter of an inner layer sleeve in the double-layer heating pipe is smaller than the inner diameter of an outer layer sleeve, the bottom end of the outer layer sleeve is closed, the bottom end of the inner layer sleeve is open, and a space is kept between the bottom end of the inner layer sleeve and the bottom end of the outer layer sleeve so that a liquid heat-conducting medium can flow; the top of the inner casing and the top of the outer casing are fixed on a cross beam on the upper portion of the rack, the top of the inner casing penetrates through the cross beam of the rack and then is communicated with an output pipe of the heat source heating mechanism, the top of the outer casing sequentially penetrates through a plurality of thin pipes buried in the cross beam of the rack and then is communicated with an input pipe of the heat source heating mechanism, the thin pipes penetrate through a closed ring between the outer casing and the inner casing and enter a space between the inner casing and the outer casing to form a heating closed inner circulation route in which a heat-conducting medium enters from the inner casing to be heated and flows out from the outer casing and the thin pipes.

The heat source heating mechanism is a heat conduction oil boiler, or a steam heating boiler, or a centralized steam heating system, and preferably a heat conduction oil boiler.

The wall surface of the mould pressing inner cavity is provided with a plurality of vertically arranged bulges, and the bulges correspond to the grooves on the surface of the wood-bamboo hollow forming wallboard so as to increase the surface decoration effect of the wood-bamboo hollow forming wallboard.

A bottom plate which is horizontally arranged and can move up and down in the mould pressing inner cavity is also arranged below the stamping head; the periphery of the bottom plate is matched with the cross section profile of the inner cavity, and a plurality of sliding holes which are in sliding fit with the inner mold forming pipe are also arranged on the bottom plate; the bottom plate and the stamping head are respectively provided with a plurality of through holes, and the plurality of reinforcing ribs respectively penetrate through the through holes in the stamping head from top to bottom and then are fixed on the bottom plate in a unidirectional mode; the reinforcing ribs are respectively and gradually released by a plurality of releasing mechanisms arranged at the top of the frame.

Two ends of the stamping head can be vertically and slidably positioned on a support column of the rack through a vertically arranged guide rail mechanism; the guide rail mechanism comprises a plurality of vertical guide rails arranged on the stand columns on the two sides and a plurality of sliding blocks which are fixed on the periphery of the stamping head and are matched with the vertical guide rails one by one.

The invention has the beneficial effects that: the internal mold forming tube is communicated with the heat source heating device, and when the internal mold forming tube works, the double heat sources of the mold pressing plate and the internal mold forming tube simultaneously heat the inside and the outside of the plate blank in the mold pressing inner cavity, so that any part of the plate blank can be rapidly heated, and the heating dead angle (the part where the heat can not reach) is completely eliminated. Therefore, as long as the thickness designed and produced at any position in the plate blank is not more than 5cm, the wallboard component with any thickness can be produced by amplifying the pipe diameter of the inner die, thereby completely breaking through the technical problem that the thickness of the board which is more than 5cm cannot be produced by using wood as a heat insulating material and restricting the development of the whole industry, and manufacturing the first applicable high-performance wall material for the wood structure building in China. The method has great economic value and social benefit for promoting the wood structure building field of China to quickly catch up with the advanced level of developed countries in the world.

Drawings

FIG. 1 is a schematic view of a method according to the present invention.

Figure 2 is a schematic view of the structure of figure 1 with the die plate and thickness gauge removed.

Fig. 3 is a schematic view of the structure of fig. 1 with the punch head, base plate and reinforcing bars removed.

Fig. 4 is a schematic view of the structure of the compression cavity in fig. 1.

Fig. 5 is a left-side view structural diagram of fig. 1.

Fig. 6 is a left-side view structural diagram of fig. 2.

Fig. 7 is a left-side view structural diagram of fig. 3.

Fig. 8 is a schematic top view of the structure of fig. 1.

Fig. 9 is a schematic top view of fig. 2.

Fig. 10 is a schematic top view of fig. 3.

Fig. 11 is a front view of the press head.

Fig. 12 is a schematic top view of the structure of fig. 11.

Fig. 13 is a schematic view showing the connection relationship between the bottom plate and the reinforcing ribs.

Fig. 14 is a schematic top view of the structure of fig. 13.

Fig. 15 is a schematic top view of the structure of fig. 4.

Fig. 16 is a schematic perspective view of a rebar release mechanism.

Fig. 17 is a schematic view of the retainer ring secured to the bottom end of the bar.

Fig. 18 is a schematic view showing an operating state of the method according to the present invention (a state where wood or bamboo particles are applied).

Fig. 19 is a second schematic view of the working state of the method according to the invention (punching of wood-bamboo particles by a punching head).

Fig. 20 is a left side view schematically illustrating the left side view of fig. 18.

FIG. 21 is a schematic view showing the connection between the double tube and the heat source heating means in the present invention.

Fig. 22 is a schematic front view of the device of the present invention.

Fig. 23 is a schematic diagram of the right view of the device of the present invention.

Fig. 24 is a schematic cross-sectional structural view of S-S of fig. 21.

Fig. 25 is a schematic view of the structure of fig. 21 with the feeding device removed (for clarity, the reinforcing bars and the inner mold tube are omitted).

Fig. 26 is a schematic perspective view of a wood-bamboo hollow board.

Detailed Description

The technical solution of the present invention is further specifically described below by way of specific examples.

The wood-bamboo hollow molding wall plate K (shown in figure 25) has a flat rectangular outer contour, wherein holes K1 which are arranged along the length direction and penetrate through two ends of the length direction are formed; in addition, a plurality of reinforcing ribs K2 are arranged, the extending direction of the reinforcing ribs is consistent with the extending direction of the holes, and the arrangement parts of the reinforcing ribs are arranged between every two holes and below the outer surface of the hollow plate, so that better bonding strength with the hollow plate is obtained.

The invention provides a continuous built-in forming method of an ultra-thick wood-bamboo hollow formed wallboard, which comprises the following steps:

1) the punching head reciprocates up and down in the die pressing inner cavity M along a vertical guide rail (the vertical guide rail is vertically arranged on the pillars at the two sides of the rack) under the traction of a power mechanism; meanwhile, the die head and a plurality of inner die forming pipes 4 (the top ends of the inner die forming pipes are fixed on a beam at the upper part of the frame) which are vertically arranged in the die pressing inner cavity and are in sleeve fit with the punching head and a plurality of reinforcing ribs 5 move relatively; the wall part of the mould pressing inner cavity and the wall of the inner mould forming pipe are heated by a heat source heating mechanism to rise the temperature;

the mould pressing inner cavity is enclosed by two mould pressing plates 12 which keep parallel distance in the thickness direction of the mould pressing inner cavity and two thickness gauges 2 which are arranged at the two ends of the mould pressing inner cavity in the width direction; the upper end and the lower end of the mould pressing inner cavity are both open.

2) When the punch head moves upwards until a distance is left from the upper end opening of the molding cavity (as shown in fig. 18), the top end inlet (top end feed inlet) of the molding cavity is opened; uniformly applying wood and bamboo crushed aggregates accompanied with glue into the die pressing inner cavity from the top end inlet by the feeding device, and supporting the wood and bamboo crushed aggregates by the bottom plate 1 after the wood and bamboo crushed aggregates fall into the die pressing inner cavity;

3) the punching head moves downwards under the traction of the power mechanism to enter a die pressing inner cavity, the added wood and bamboo crushed materials are punched, the wood and bamboo crushed materials and reinforcing ribs form a tightly combined plate blank (the reinforcing ribs are uniformly embedded in the plate blank, and each reinforcing rib keeps a distance from the hole and the outer surface of the plate blank), the plate blank is heated and heated in the die pressing inner cavity, and the reinforcing ribs, the plate blank and a bottom plate simultaneously move downwards for a certain distance (preferably 10-50mm) under the pressure; the inner mold forming pipe forms a through hole on the plate blank;

4) the stamping head moves upwards again until the stamping head is separated from the upper end opening of the die pressing inner cavity by a certain distance, and the top end inlet of the die pressing inner cavity is opened again; uniformly applying wood and bamboo crushed aggregates accompanied with glue into the die pressing inner cavity from the top end inlet by the feeding device, and laying the wood and bamboo crushed aggregates on the upper part of the preliminarily formed plate blank in the previous step after the wood and bamboo crushed aggregates fall into the die pressing inner cavity; the punching head punches the added crushed aggregates, and simultaneously the inner wall of the mould pressing inner cavity and the pipe wall of the inner mould forming pipe continuously heat the formed plate blank at high temperature, so that the adhesive is quickly cured in the process that the plate blank is punched and moved each time;

5) the steps from 3) to 4) are repeated, and the wood and bamboo crushed aggregates are subjected to continuous cyclic operation of feeding, stamping, heating and curing, so that a continuously formed plate blank is formed; the plate blank is gradually moved out of the mould pressing inner cavity downwards to form a final finished product of the super-thick wood-bamboo hollow molding wallboard;

the inner mold forming pipe is internally provided with a double-layer heating pipe communicated with a heat source heating mechanism, and the heat source heating mechanism arranged outside the device forms a loop for circulating a liquid heat-conducting medium through the top end of the inner mold forming pipe.

In the continuous forming device for the ultra-thick wood-bamboo hollow formed wall panel reinforcing rib provided by the invention (as shown in figures 21 to 25): the two mould pressing plates 12 and the two thickness gauges 2 are vertically and fixedly arranged on the frame 18 and enclose a mould pressing inner cavity M with a rectangular cross section, and the upper end and the lower end of the mould pressing inner cavity are communicated with the outside to form an opening; the two mould pressing plates keep parallel distance in the thickness direction of the mould pressing inner cavity, and the two thickness gauges are arranged at two ends of the width direction of the mould pressing inner cavity and used for controlling the thickness of a finished wallboard product. The outline of the rectangular cross section is the same as that of the cross section of the super-thick wood-bamboo hollow board; a plurality of cylindrical internal mold forming pipes 4 are vertically arranged in a straight line and fixed in a mold pressing internal cavity (the upper ends of the internal mold forming pipes are fixed with a fixed cross beam 7 of a rack) so as to be used for forming holes of the hollow wall board, and the sizes of the internal mold forming pipes and the arrangement mode of the adjacent internal mold forming pipes are the same as the holes of the super-thick wood-bamboo formed hollow wall board.

A stamping head 3 which is horizontally arranged and driven by a power mechanism can be positioned in the die pressing inner cavity in a vertically moving way; the stamping head realizes the up-and-down movement in the mould pressing inner cavity through the guide rail mechanisms on the rack support columns at the two ends, and each guide rail mechanism comprises a plurality of vertical guide rails 13 fixed on the rack support columns and a plurality of sliding blocks 14 fixed at four corners of the periphery of the stamping head and in one-to-one sliding fit with the vertical guide rails. A plurality of vertically arranged sliding holes 3.1 are arranged on the punching head, correspond to the inner die forming pipe one by one and are sleeved on the inner die forming pipe in a penetrating way; the periphery of the stamping head is in a shape which is matched with the cross section profile of the mould pressing inner cavity, so that the stamping head and the inner wall of the mould pressing inner cavity cannot be interfered with each other when in moving fit; a heating pipe communicated with a heat source heating mechanism (the heat source heating mechanism is preferably a heat-conducting oil boiler; omitted in the figure) is arranged in a plate body of the mould pressing plate; in addition, a feeding device 17 for applying wood and bamboo crushed aggregates to the mould pressing inner cavity is also arranged.

The above steps are all similar to the existing wood-bamboo hollow board forming device.

The improvement of the invention is that: the inner mold forming pipe is a double-layer heating pipe internally provided with a heating mechanism communicated with a heat source; a heat source heating mechanism arranged outside the device forms a closed circulation loop for conveying a liquid heat-conducting medium by communicating with an inlet and outlet interface at the top end of the inner mold forming pipe.

As can be seen from fig. 21: in the double-layer sleeve, the outer diameter of the inner layer sleeve (4-1) is smaller than the inner diameter of the outer layer sleeve (4-2) (a channel which is beneficial to the flowing of the liquid heat-conducting medium is formed between the pipe walls of the two sleeves), the bottom end of the outer layer sleeve (4-1) is closed, the bottom end of the inner layer sleeve is open, and a distance is kept between the bottom end of the inner layer sleeve and the bottom end of the outer layer sleeve so as to allow the liquid heat-conducting medium; the top of the inner sleeve and the top of the outer sleeve are fixed on a cross beam 7 of the frame, the top of the inner sleeve penetrates through the cross beam and then is communicated with an output pipe of the heat source heating mechanism, the top of the outer sleeve is communicated with an input pipe of the heat source heating mechanism through a plurality of thin pipes 7-1 embedded in the cross beam in sequence, and a closed isolating ring 7-2 is arranged between the inner sleeve and the outer sleeve, the distance S between the isolating ring and the surface of an external plate blank layer is about 100mm, the bottom of each thin pipe penetrates through the closed isolating ring and is communicated with the outer sleeve, the top of each thin pipe is communicated with a heat-conducting medium collecting box 21, the heat-conducting medium collecting box is communicated with the input pipe of the heat source heating mechanism through a second connecting pipe 20-2, the inner sleeve penetrates through the cross beam and then is communicated with the output pipe of the heat source heating mechanism through a first. Liquid heat-conducting medium (such as heat-conducting oil) output by an output pipe of the heat source heating mechanism is input from the top end of the inner-layer sleeve through a first connecting pipe, turns back at the bottom end of the inner-layer sleeve and enters the outer-layer sleeve upwards (so as to release heat to heat the blank), then passes through a plurality of thin pipes and a heat-conducting medium header connected to the closed isolating ring, and finally returns to an input pipe of the heat source heating mechanism through a second connecting pipe to be reheated; thereby forming a loop of the heating cycle of the liquid heat transfer medium.

And a closed isolating ring is arranged between the inner layer sleeve and the outer layer sleeve, and the distance between the isolating ring and the upper part of the external plate blank is about 100 mm. The inner mould pipe is formed to heat the plate blank to present gradient temperature, namely the initial temperature is 140 ℃, so that the adhesive on the surface of the plate blank which is firstly contacted with the inner mould pipe can not be immediately cured, and all parts of the plate blank can be fully preheated at the same time. After the plate adhesive enters the heating part of the lower heat-conducting medium, the heating temperature is increased to 160-190 ℃, the plate adhesive starts to be cured quickly, and the adhesive of each part can be cured synchronously, so that the condition of forming large internal stress due to asynchronous curing can not occur.

The inner wall of the mould pressing inner cavity is also suitable for the surface structure of the wood-bamboo hollow molding wallboard; when the surface of the wood-bamboo hollow molding wallboard is designed with a plurality of grooves K3 which are longitudinally arranged, the wall surface of the inner cavity with the rectangular cross section is provided with corresponding bulges so that the wood-bamboo hollow molding wallboard obtained by mould pressing conforms to the design, and the wallboard with the surface decoration effect is prepared and can be directly applied (without coating bamboo veneers for veneering process treatment).

A bottom plate 1 which is horizontally arranged is arranged below the stamping head, and the peripheral shape of the bottom plate is adapted to the mould pressing inner cavity; the bottom plate is also provided with a plurality of sliding holes 1.1 which correspond to the inner mold forming pipes one by one and are sleeved on the inner mold forming pipes one by one through the sliding holes for sliding fit; the peripheral shape of the bottom plate is matched with the cross section profile of the mould pressing inner cavity. The bottom plate and the stamping head are respectively provided with a plurality of through holes, and a plurality of reinforcing ribs 5 respectively penetrate through the through holes 8 on the stamping head from top to bottom and then are fixed in the through holes of the bottom plate; fig. 13 and 17 show one of the reinforcing rib fixing methods: the reinforcing ribs downwards penetrate through the through holes of the bottom plate and then penetrate through the clamping ring 6 to be pressed and fixed by the clamping ring (after the clamping screw 9 on the clamping ring is screwed in the inner diameter direction, the reinforcing ribs penetrating through the clamping ring are pressed and fixed), so that the reinforcing ribs are fixed on the bottom plate in a single direction (the reinforcing ribs cannot penetrate through the through holes of the bottom plate to move upwards due to the fact that the diameter of the clamping ring is larger than that of the through holes of the bottom plate, and therefore the reinforcing ribs are fixed in a single direction), and the punching force borne by the bottom plate can.

The reinforcing ribs are gradually released by a plurality of releasing mechanisms (conventional mechanisms) arranged on the rack; each release mechanism comprises a spool 10 around which reinforcing bars are wound (one bar per spool), a damping mechanism to damp the rotation of the spool (the purpose of damping is to create a certain tension in the reinforcing bars), and a number of guide wheels 11 for guiding the movement of the reinforcing bars. As the simplest damping mechanism, only a friction plate needs to be fixed on the rack, and one end of the friction plate is pressed against the wheel plate 10.1 of the spool to generate friction. When the punching head moves downwards to punch the wood and bamboo crushed aggregates, the pressure applied to the bottom plate exceeds the damping force, and the reinforcing ribs are driven to move downwards for a certain distance (the reinforcing ribs are naturally released for a certain distance); thereby the reinforcing rib always keeps certain tension.

The driving mode of the punching head is the prior art. As can be seen from the figure: the two ends of the stamping head extend outwards to the outside of the frame and are driven by a power mechanism arranged on the frame. The power mechanism is a crank-slide rod mechanism driven by a motor 19 through a belt wheel mechanism; the crank is a connecting rod 15 eccentrically hinged to a punching flywheel 16 (a rotating shaft of the punching flywheel is shielded by a cross beam 7 in fig. 25), the bottom end of the connecting rod is hinged to the end part of the punching head, and the rotation kinetic energy of the punching flywheel is converted into linear punching kinetic energy, so that the punching head is driven to slide up and down along a vertically arranged guide rail, and bamboo crushed aggregates entering a die pressing inner cavity are punched.

The reinforcing ribs are preferably flexible reinforcing ribs impregnated with thermosetting resin, and can be metal wire ropes, strong fiber wire ropes, particularly aramid fiber reinforcing ropes.

The charging device 17 shown in fig. 24 comprises an outer shell 17.1 and an inner shell 17.2; the outer shell 17.1 forms the outer wall of the feeding device, and the lower punching head is covered by the inner shell to isolate the punching head from the wood and bamboo crushed aggregates. A funnel-shaped output port with a large upper part and a small lower part is formed between the outer shell and the inner shell; the output port is aligned with the top opening of the mould pressing inner cavity, and when the punching head moves upwards to open the top inlet, the wood and bamboo crushed aggregates can be applied to the mould pressing inner cavity; the amount of applied wood or bamboo particles is determined by the size of the top inlet (by the distance the punch head has moved upward).