WO2010054514A1

WO2010054514A1 - Shaping mold for recyclable biomaterials

Info

Publication number: WO2010054514A1
Application number: PCT/CN2008/073071
Authority: WO
Inventors: 车战斌
Original assignee: Che Zhanbin
Priority date: 2008-11-14
Filing date: 2008-11-14
Publication date: 2010-05-20
Also published as: CN102131635B; CN102131635A

Abstract

A shaping mold for recyclable biomaterials has a shaping assembly (2) and a supporting body (1). The shaping assembly (2) includes shaping mold cavities (21). An engagement surface (12) for fixing the shaping assembly (2) is set on the supporting body (1). Through holes penetrating through the supporting body (1) are distributed on the engagement surface (12). Each shaping mold cavity is corresponding to a through hole (11) respectively. Cooling channels (3) are set on the engagement surface (12) along the fixed site of the shaping assembly (2) and the supporting body (1). The cooling channels (3) connect to some through holes (11) on the supporting body (1).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a molding apparatus for a biomass material that is loosely recyclable, and more particularly to a molding mold for a renewable biomass material. BACKGROUND OF THE INVENTION It is well known that renewable biomass materials, such as crop straws, herbs, shrubs, or solid waste generated in wood processing, are an inexhaustible resource. The most traditional use of such resources is as a burning material and a term. Due to the large size, inconvenient transportation and storage, the original use of biomass materials has long been abandoned. In order to solve the above-mentioned defects of biomass materials, a processing method of pulverizing biomass material and then solidifying into pellets has been invented, which can greatly reduce the volume of biomass materials, thereby solving the problems of large volume and inconvenient transportation and storage.

The particle forming device of the existing biomass material is roughly classified into a ring-shaped particle forming machine and a flat-die particle forming machine from the structural characteristics thereof. The two biomass material forming devices are widely used in the processing of biomass feed. With the development of the utilization of biomass burning materials, the method of wedge extrusion has been applied to the processing of combustion materials. However, due to the fact that the raw materials of the burning materials are more than the herbal materials, they are more hard woody biomass materials such as shrubs and sawdust. Relative to these harder biomass materials, the wear of the molding cavity of the extrusion molding machine is very serious. Since the molding cavity of the existing flat die or ring die is evenly distributed on the die body, when the individual cavity or part of the cavity is worn and cannot work normally, the force of the entire die will be affected, and the overall die is accelerated. The wear and tear makes the overall mold forming efficiency lower or even makes it not work properly. In order to improve the service life of the molding die, the current method is to manufacture a mold from a material having a higher strength, such as a titanium alloy. Since the molding cavity is integrally formed on the mold body, the entire mold will be scrapped when the cavity is worn, so that the cost of the molding die is high.

In view of the above disadvantages of the existing mold, the inventors have proposed a mold for recyclable biomass material and a molding assembly thereof (International Application No. PCT/CN2007/071081); the molding die is composed of a molding assembly and a support The molding assembly is provided with a plurality of molding cavities, the support body is provided with a joint surface, and the joint surface is provided with a plurality of through holes penetrating the support body, and the molding assembly is fixedly fixed on the support body. On the joint surface, the discharge ends of the molding cavities are respectively arranged corresponding to the through holes on the support body; the invention mainly adopts a fixing assembly on the support body, and a plurality of molding cavities are formed on the molding assembly, and When the cavity is worn out and can no longer be used, the molding assembly can be removed from the support body and replaced with a new molding component, so that the mold support can be reused to improve the life of the extrusion molding die; The molding assembly provided with the molding cavity is integrally assembled with the support body, so that the molding assembly can be made of a better material, and the support body is made of a general material, thereby reducing the cost of the overall molding die and the extrusion molding process. cost.

However, when the molding die proposed by the inventors mentioned above is used, since the biomass material continuously rubs with the molding cavity during the extrusion molding process, the temperature of the molding die continues to rise, so as to affect the normality of the extrusion molding process. The above-mentioned defects are more obvious when used in areas with high temperature and humidity in southern China. The temperature of the molding die is too high, mainly affecting the extrusion molding process from the following aspects:

1. The molding die transfers heat to the pulverized biomass material and dries the biomass material. When the raw material is dried, it is easy to block the molding cavity and cause "dead hole"; in severe cases, it will cause The entire molded component cannot be used.

2. The overheated molding die will produce part of the water vapor while drying the biomass material. When the water is mixed into the raw material during extrusion molding, the extruded particles will swell and be easily broken and cannot be solidified. SUMMARY OF THE INVENTION An object of the present invention is to provide a molding die for a renewable biomass material, which is provided with a plurality of cooling passages, which can effectively reduce the temperature of the molding die during the extrusion molding process, and perform extrusion molding processing. Smooth progress and increase production efficiency.

It is also an object of the present invention to provide a molding die for a renewable biomass material to reduce the wear of the mold, increase the service life, and reduce the manufacturing cost and the use cost of the mold, thereby further reducing the cost of molding the biomass material.

The object of the present invention is achieved by a molding die for a renewable biomass material for forming a loose biomass material, the molding die being composed of a molding assembly and a support; a plurality of molding cavities, the support body is provided with a joint surface, and a plurality of through holes penetrating through the support body are distributed on the joint surface, and the forming component is fixedly disposed on the joint surface of the support body, Each of the molding cavities on the molding assembly is respectively provided with a feeding end and a discharging end, and the discharging ends of the molding cavities are respectively arranged corresponding to the through holes on the supporting body; the biomass material in a loose state is from After the molding cavity of the molding cavity enters the molding cavity and is extruded, it is led out from the through hole corresponding to the discharge end of the molding cavity; at the joint portion of the molding component and the support body The joint surface is provided with a plurality of cooling passages, and the cooling passages communicate with the through holes on the support body.

In a preferred embodiment of the present invention, the cooling passage is provided on a side of the molding assembly of the joint surface of the molding assembly and the support.

In a preferred embodiment of the present invention, the cooling passage is provided on a side of the support body of the joint surface of the molding assembly and the support body.

In a preferred embodiment of the invention, the cooling passage spans both sides of the joint surface of the forming assembly and the support.

In a preferred embodiment of the invention, the ports of the respective cooling passages are in communication with a gas box. In a preferred embodiment of the invention, a source of air provides cooling gas to the gas box.

In a preferred embodiment of the present invention, the support body has a ring shape, and the molding assembly is also annular. The molding assembly is fixed to the joint surface of the support body to form a ring mold.

In a preferred embodiment of the present invention, the air box is in the shape of a ring groove, and an annular opening is disposed on a bottom surface of the annular air box, the air box is disposed at one end of the ring mold, and the annular opening and the The ports of the respective cooling channels are correspondingly set.

In a preferred embodiment of the present invention, the support body has a flat plate shape, and the molding assembly is also in the shape of a flat plate. The molding assembly is fixed to the joint surface of the support body to form a planar template.

In a preferred embodiment of the present invention, the air box is in the shape of a ring groove, and an annular opening is disposed on an inner annular surface of the annular air box, and the annular air box is disposed around the planar template, An annular opening is provided corresponding to the ports of the respective cooling passages.

In a preferred embodiment of the invention, the forming assembly may be constructed from a plurality of strip or plate members.

In a preferred embodiment of the invention, the forming assembly and the support are fixed by a threaded connection. In a preferred embodiment of the present invention, an engagement fixing structure is disposed between the molding assembly and the support body, and the molding assembly is fixed to the support body by the engagement fixing structure.

In a preferred embodiment of the invention, the molding cavities are evenly arranged on the forming assembly. In a preferred embodiment of the present invention, the cross-sectional area of the discharge end of the molding cavity is smaller than the support. The cross-sectional area of the body through hole.

In a preferred embodiment of the invention, the forming assembly is machined using a precision casting process.

In a preferred embodiment of the invention, the molding cavity on the molding assembly is integrally formed with the molding assembly by a casting method.

In a preferred embodiment of the invention, the molding cavity on the molding assembly is integrally formed with the molding assembly by a mechanical processing method.

In a preferred embodiment of the invention, the forming assembly can be made of a ceramic material.

In a preferred embodiment of the invention, the forming assembly can be made of a titanium alloy material. In a preferred embodiment of the present invention, the molding cavity is formed by an extrusion cavity whose cross-section is tapered toward the discharge end, and the bottom of the extrusion cavity is provided with a molding outlet, and the shape of the molding outlet Corresponding to the section of the product after the material has been formed, the material is extruded in the tapered extrusion chamber to a sufficient forming density and extruded from the forming outlet.

In a preferred embodiment of the present invention, the forming outlet of the bottom of the pressing chamber is offsetly disposed on one side of the bottom of the pressing chamber, and the material enters the cross section by the side corresponding to the offset direction of the forming outlet. The contracted extrusion chamber is squeezed.

In a preferred embodiment of the invention, the extrusion chamber having a tapered cross section on the molding cavity has a depth of 10 mm or less.

In a preferred embodiment of the present invention, the forming outlet of the molding cavity may be connected with a forming section corresponding to the forming outlet.

In a preferred embodiment of the present invention, the forming outlet of the molding cavity may be connected with an enlarged section, and the enlarged section has an outlet area larger than the forming outlet area.

In a preferred embodiment of the invention, the shape of the forming outlet may also correspond to the shape of the cross section of the extrusion chamber.

In a preferred embodiment of the present invention, the extrusion cavity may have a circular, rectangular, elliptical, or other asymmetrical shape.

In a preferred embodiment of the present invention, the extrusion cavity has a circular cross-sectional shape, and the molding outlet is also circular. The axis of the molding outlet is parallel to and spaced apart from the axis of the extrusion cavity section. The pitch is less than or equal to the radius of the circular shaped exit.

In a preferred embodiment of the invention, the thickness of the forming assembly is equal to the depth of the extrusion chamber. In the molding die of the present invention, since a plurality of cold communicating with a part of the through holes on the support body are provided However, in the process of using the molding die, air or other cooling gas may be introduced into each cooling passage to form a flow between the port of the cooling passage and the through hole, so that the heat generated by the friction of the forming mold is flowed. The cooling gas is taken away to prevent the molding die from being too hot, so that the extrusion process can be carried out smoothly. Furthermore, when the molding cavity is worn and can no longer be used, the molding assembly can be detached from the support body, and the new molding component can be replaced, so that the mold support body can be reused, and the extrusion molding die can be improved. The life of the mold can reduce the cost of the overall molding die and the cost of extrusion molding. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the decomposition structure of a ring mold in a molding die of the present invention.

Fig. 2 is a schematic view showing the structure of a gas box at one end of the ring mold of the present invention.

Figure 3: Schematic diagram of the lateral structure of a ring die in the present invention.

Figure 4: Schematic diagram of the lateral structure of another ring mold in the present invention.

Fig. 5 is a schematic view showing the lateral structure of another ring die in the present invention.

Figure 6 is a schematic view showing the structure of a molding cavity of the present invention.

Figure 7: Schematic diagram of a connection structure of the molding assembly and the support of the present invention.

Figure 8 is a schematic view showing another connection structure of the molding assembly and the support of the present invention.

Figure 9 is a schematic view showing the structure of a planar mold in the present invention.

Figure 10: A cross-sectional view of the A-A in Figure 9.

Figure 11 is a schematic view showing the structure of another planar mold in the present invention.

Figure 12: Schematic diagram of another planar mold in the present invention.

Figure 13 and Figure 14 are schematic views showing the structure of another molding cavity of the present invention.

Figure 15 - Figure 18: Schematic diagram of another molding cavity of the present invention.

Figure 19: Schematic diagram of a further planar mold in the present invention.

Figure 20: Schematic diagram of another molding cavity of the present invention.

Example 1

As shown in FIG. 1 to FIG. 5, it is a molding mold for a renewable biomass material according to the present invention. The molding die is composed of a support body 1 and a molding assembly 2, and the molding assembly 2 is provided with a plurality of molding cavities 21 (only a part of the molding cavity 21 is shown), and the plurality of molding dies The cavity 21 is evenly arranged on the molding assembly 2; the support body 1 is provided with a joint surface 12, and a plurality of through holes 11 penetrating the support body 1 are distributed on the joint surface 12 (only a part of the through holes 11 are shown in the figure) The molding assembly 2 is fixedly disposed on the bonding surface 12 of the support body 1. Each molding cavity 21 on the molding assembly 2 is respectively provided with a feeding end 23 and a discharging end 24, and each molding cavity The discharge ends 24 of 21 are respectively disposed corresponding to the through holes 11 on the support body; after the biomass material in a loose state is extruded from the molding cavity feed end 23 of the molding assembly 2 into the molding cavity 21, Derived from the through hole 11 corresponding to the discharge end 24 of the molding cavity 2 on the support body 1; at the joint portion of the molding assembly 2 and the support body 1 and along the joint surface 12, a plurality of cooling passages 3 are provided ( Only a part of the cooling passage 3) is shown in Fig. 1, and the cooling passage 3 communicates with a part of the through hole 11 on the support body 1.

In the molding die of the present invention, since a plurality of cooling passages 3 communicating with the partial through holes 11 on the support body 1 are provided, air or other cooling gas can be introduced into the respective cooling passages 3 during use of the molding die. , the air is formed to flow between the port of the cooling passage 3 and the through hole 11, so that the heat generated by the friction of the molding die is carried away by the flowing cooling gas, preventing the molding mold from being overheated, and the extrusion molding process can be smoothly performed. .

In this embodiment, as shown in FIG. 1 to FIG. 5, the support body 1 may have a ring shape, the molding assembly 2 also has a ring shape, and the molding assembly 2 is fixed to the joint surface 12 of the support body to form the ring mold. . As shown in FIG. 3, the inner wall surface of the support body 1 is a joint surface 12, and the molding assembly 2 is fixedly coupled to the support body 1 from the inner wall surface of the annular support body 1. Of course, the joint surface 12 can also be the support body 1. The outer wall surface, the molding assembly 2 can also be fixedly coupled to the outer wall surface of the annular support body 1 (as shown in Fig. 4).

As shown in FIG. 5, the cooling channel 3 can be disposed on one side of the molding assembly 2 of the bonding surface 12 of the molding assembly 2 and the support body 1; in this embodiment, the molding module 2 should be made slightly thicker. And an extension hole is further formed at the discharge end 24 of the molding cavity 21 to prevent the cooling passage 3 from interfering with the molding cavity 21 and destroying the molding cavity.

As shown in Fig. 4, as another embodiment of the present embodiment, the cooling passage 3 may be provided on one side of the support body 1 of the joint surface 12 of the molding assembly 2 and the support body 1.

As shown in FIG. 3, as another embodiment of the embodiment, the cooling passages 3 can be straddle both sides of the joint surface 12 of the molding assembly 2 and the support body 1; in this manner, the joint surface 12 corresponding cooling channels 3 can be symmetrically merged into one through hole (as shown in Figure 3); can also be staggered Settings (as shown in Figure 2).

In the present invention, the arrangement of the cooling passages 3 on one or both sides of the joint surface 12 is mainly made without affecting the structural strength of the forming mold and facilitating the processing. The cooling passages 3 are disposed on the side or sides of the joint surface 12, and the cooling passages 3 can be processed by milling grooves, thereby facilitating the processing; meanwhile, the cooling passages 3 are disposed at the joints of the support body 1 and the molding assembly 2, It will not cause a major weakening of the structural strength of the two.

In this embodiment, the cross-sectional shape of the cooling passage 3 may be semicircular, rectangular, semi-elliptical or polygonal, or the like.

In the present invention, as shown in FIGS. 3 and 4, the cross-sectional area of the discharge end 24 of the molding cavity 2 is smaller than the cross-sectional area of the through hole 11 of the support body 1, that is, the molding extruded from the molding cavity 2. When the particles pass through the through hole 11, there is a slight gap between the molding particles and the through hole 11 of the support body 1; the gap can reduce the extrusion resistance of the material to save energy, and can not affect the extrusion of the material particles. In the case (i.e., while the material particles are being extruded) the cooling gas is led out through the gap.

Further, as shown in FIG. 2, the ports of the respective cooling channels 3 are in communication with a gas box 4; the air box 4 is in the shape of a ring groove, and an annular opening 42 is provided on a bottom surface of the annular air box, the air box is disposed At one end of the ring die, the annular opening 42 is disposed corresponding to the ports of the respective cooling channels 3; the air box 4 can be fixed integrally with the ring mold and rotate together with the rotation of the ring mold; the air box 4 can also It is fixed to the frame (not shown) and does not rotate with the ring mold.

The air box 4 can communicate with a gas source (not shown) through an opening 41 formed in the air box, and supply cooling gas or air into the air box 4 from the air source. The cooling gas is introduced from the ports of the respective cooling passages 3 through the air box 4, and is discharged from the partial through holes 11 communicating therewith; when the cooling gas flows in the cooling passages 3, the heat generated on the molding die is generated. Take away to prevent the molding die from being too hot and affecting the molding process.

In the present embodiment, a seal is formed between the inner edge of the annular opening 42 and the corresponding portion of the molding die to prevent the cooling gas from leaking therefrom. The sealing form can be implemented by an existing structure and will not be described herein.

Further, in this embodiment, the through hole 11 of the support body 1 may have a circular cross section, or may be a rectangular shape, an elliptical shape or other asymmetrical polygonal shape.

As shown in FIG. 1, the molding assembly 2 can be composed of a plurality of strip-shaped (or plate-like) members 25. As shown in FIG. 3 and FIG. 6, the molding cavity 21 is formed by a contraction chamber 20 which is contracted. A molding outlet 22 is provided at the bottom of the extrusion chamber 20. The inventors have conducted a large number of tests to prove that the material can reach a sufficient material forming density in the shrinking extrusion cavity 20 having a depth of not more than 10 mm, and is directly extruded from the molding outlet 22 to obtain a desired shape. There is no longer any friction between the material being extruded from the forming outlet 22 and the molding cavity 21, minimizing the energy consumption required, and greatly reducing the wear of the mold. In the present embodiment, the diameter of the molding outlet 22 (discharge end) is smaller than the diameter of the support through-hole 11.

As shown in FIG. 7, the molding assembly 2 and the support body 1 can be fixed by screwing; that is, a through hole 13 is provided on the support body 1, and a threaded hole 26 is provided on the molding assembly 2 corresponding to the through hole 13, by a screw (not shown) It is shown that the perforation 13 is threaded into the threaded hole 26 to tightly connect the forming assembly 2 and the support body 1. In this embodiment, the through holes 13 and the threaded holes 26 may be disposed opposite to each other to make the connection between the two more stable. Alternatively, the perforations may be provided on the molding assembly 2, and the threaded holes are provided on the support body 1.

Further, an engagement fixing structure may be disposed between the molding assembly 2 and the support body 1, and the molding assembly 2 is fixed to the support body 1 by the engagement fixing structure. As shown in Fig. 8, a strip-shaped recess 14 is provided on the joint surface 12 of the support body 1, and a slide rail 27 is provided on the molding assembly 2, and the slide rail 27 is fitted and fixed correspondingly to the recess 14 during assembly.

The molding assembly 2 of the present invention can be processed by a casting method; the molding cavity 21 of the molding assembly 2 can also be integrally molded with the molding assembly 2 by a casting method to reduce the manufacturing cost of the molding die. Further, the molding assembly 2 of the present invention may be made of a ceramic material in addition to a commonly used mold material; in order to improve the strength and wear resistance of the molding cavity 21, the molding assembly 2 may also be made of a titanium alloy material.

As described above, the molding die of the present invention can prevent the molding die from being excessively heated, and the extrusion molding process can be smoothly performed; and when the molding cavity 21 is worn out and can no longer be used, the molding assembly 2 can be removed from the support. 1 is removed, and the new molding assembly 2 is replaced, which allows the mold support 1 to be reused, thereby increasing the life of the extrusion molding mold, thereby reducing the cost of the overall molding die and the cost of the extrusion molding process. Further, since the support body 1 is not directly pressed by the material, it can be made of generally used materials, which can save production costs.

Example 2

This embodiment is basically the same as the principle of Embodiment 1. The difference is that as shown in FIG. 9 and FIG. 10, the support body 1 has a flat plate shape, the molding assembly 2 also has a flat plate shape, and the molding assembly 2 is fixed to the support body. The bonding surface 12 constitutes the planar template.

In this embodiment, a plurality of through holes 11 penetrating through the support body are also distributed on the joint surface 12 of the support body 1; the plurality of molding cavities 21 are also formed on the molding assembly 2 (in the present embodiment) In the example, the molding cavity 21 is uniformly distributed around the molding assembly, and the molding assembly 2 is fixed on the bonding surface 12 of the support body 1, and the molding cavity 21 on the molding assembly 2 and the support body 1 are respectively The through holes 11 are correspondingly arranged. The molding assembly 2 and the support body 1 can be fixed by screw connection; as shown in FIG. 9, a through hole 13 is provided on the support body 1, and a screw hole 26 is correspondingly arranged on the molding assembly 2, and is provided by a screw (not shown in the drawing) ) Connect the two closely.

As shown in FIGS. 9 and 10, a plurality of cooling passages 3 are provided at the joint portion of the molding assembly 2 and the support body 1 along the joint surface 12, and the cooling passages 3 and the partial through holes on the support body 1 are provided. 11 connected. As shown in FIG. 9, a horizontally rotating planar template is provided with a shaft hole connected to the rotating shaft at the center thereof, and the cooling passage 3 can be horizontally penetrated from the side edge of the planar template to the shaft hole (because the through cooling passage 3 is relatively easy to process), since the shaft hole is provided with the rotating shaft, the cooling gas is not leaked from the opening of the cooling passage 3 at the through-shaft hole.

As another embodiment of the present embodiment, as shown in Fig. 19, the cooling passage 3 may not penetrate the shaft hole (i.e., a blind hole or a blind groove).

As shown in Fig. 11, the cooling passage 3 may be provided on one side of the molding assembly 2 of the joint surface 12 of the molding assembly 2 and the support body 1.

As shown in Fig. 12, as another embodiment of the present embodiment, the cooling passage 3 may be provided on one side of the support body 1 of the joint surface 12 of the molding assembly 2 and the support body 1.

As shown in FIG. 10, as a further embodiment of the embodiment, the cooling passages 3 can be simultaneously spanned on both sides of the joint surface 12 of the molding assembly 2 and the support body 1.

Further, as shown in FIG. 9 and FIG. 10, the ports of the respective cooling channels 3 are in communication with a gas box 4; the gas box 4 is in the shape of a ring groove, and an annular opening 42 is provided on the inner ring surface of the annular gas box. The annular air box is disposed around the planar template, and the annular opening 42 is disposed corresponding to the port of each of the cooling channels 3.

The ring groove cross-sectional shape of the air box 4 may be "C" shape, and the plane template is sandwiched in the "C"-shaped opening portion thereof; in this embodiment, the air box 4 should be at least two Partially joined to fit around the planar template.

As shown in FIG. 12, the air box 4 can also be disposed at the side edge of the planar template and fixed to the frame (Fig. In the embodiment, the air box 4 can be a unitary structure that can be sleeved on the side edge of the planar template.

The air box 4 can communicate with a gas source through an opening (not shown) provided in the air box, and the gas source supplies cooling gas into the air box 4. The cooling gas is introduced from the ports of the respective cooling passages 3 through the air box 4, and is discharged from the plurality of through holes 11 communicating therewith (as indicated by the arrows in FIGS. 9 and 10); the cooling gas is in the cooling passage When flowing in 3, the heat generated on the molding die is taken away to prevent the molding die from being too high in temperature to affect the molding process.

Other structures, working principles, and advantageous effects of the embodiment are the same as those of the first embodiment, and will not be described again.

Example 3

This embodiment is basically the same as the structure and principle of the embodiment 1. The molding die of the present invention can be applied to the processing of biomass burning materials. Since the molding materials used for molding the combustion materials are hard, before the molding materials enter the molding cavity, the first one is A shearing force is applied to the wedge-shaped extrusion cavity. Under the shearing force, the granular material in the wedge-shaped extrusion cavity is crushed and stretched into a sheet shape, and the volume of the wedge-shaped extrusion cavity is continuously reduced. The material is laminated into the molding cavity of the molding die; in order to further make the material which has been milled and stretched into a sheet shape in the wedge extrusion cavity, it is pressed into the molding cavity of the molding die. The density of each layer is continuously increased, and a part of the particles are deformed to enter the gap between the sheet-like particles to form a state of up-and-down engagement to form a molded product superior to other products. Therefore, in the present embodiment, As shown in FIGS. 7, 8, 13, and 14, the molding cavity 21 of the molding die is designed such that the molding outlet 22 is offsetly disposed at the bottom of the extrusion chamber 20 having a tapered cross section. A longer smooth slope is formed between the material inlet end 28 and the forming outlet 22. In this embodiment, the depth b of the extrusion chamber 20 whose cross-section is tapered is less than or equal to 10 mm, and the material is offset from the molding outlet 22. The material entry end 28 of the corresponding side is extruded into the extrusion chamber 20 which is tapered in cross section and then extruded from the forming outlet 22 to give the shaped product a specific structural model.

It has been proved that after the material is extruded through the die 20, sufficient density can be achieved without forming a forming section at the end of the forming outlet 22. Therefore, the forming section of the present invention omits the forming section, and the thickness of the forming component 2 It can be equal to the depth of the tapered extrusion chamber 20, and after the material enters the extrusion cavity 20 of the mold, it is directly extruded through the molding outlet 22, thereby greatly reducing the length of the material passing through the molding die. It adapts to the characteristics of small force transmission distance of loose biomass material, and reduces the extrusion friction length and time of the material in the molding die under the premise of ensuring the molding quality. Therefore, the extrusion resistance of the material can be greatly reduced, and only a small positive pressure is required to press the material out, thereby reducing the energy consumption of the material through the molding cavity and reducing the processing cost of the biomass material product.

Example 4

The basic principle and structure of this embodiment are the same as those of the third embodiment. In this embodiment, as shown in FIG. 13 and FIG. 14, the cross-sectional shape of the tapered extrusion cavity 20 of the molding cavity 21 provided on the molding assembly 2 is shown. In the case of a circle, the forming outlet 22 is also circular, and the axis 221 of the forming outlet 22 is parallel and spaced apart from the axis 201 of the section of the extrusion chamber 20, the spacing a of which is less than or equal to the radius of the circular forming outlet 22.

The above structural design facilitates the machining of the molding cavity 21 by machining. When the molding cavity 21 is processed, a through hole can be vertically processed on the molding assembly 2 by using a milling cutter (or other cutting tool) to form a Forming the outlet 22, replacing a reaming cutter with a suitable lead angle and shifting its machining axis to one side, and controlling the appropriate offset (the offset is not greater than the radius of the forming outlet 22) for reaming To form the tapered extrusion chamber 20. Since the molding cavity 21 of the present invention is processed without using a special-shaped machining method, it can be completed only by milling or drilling and with the control axis offset, thereby simplifying the processing of the molding cavity 21 and facilitating the processing. Therefore, the processing cost of the mold can be greatly reduced.

In the present embodiment, as shown in Figs. 15, 16, the axis 201 of the section of the tapered extrusion cavity 20 in the molding cavity 21 is offset from the axis 221 of the molding die 22, and the extrusion cavity 20 is tapered. The edge is tangent to the edge of the forming die 22, i.e., the side defines a vertical side wall 222. In this manner, the material entering the forming cavity 21 can be pressed inwardly by the resistance of the vertical side wall 222 inwardly. So that the material does not overflow from the side, the extrusion effect is better. Of course, as shown in FIGS. 17, 18, one side of the tapered extrusion cavity 20 may also be located outside or within the edge of the molding die 22 to form the molding cavity 21, which is also possible in this manner. The same effect as above.

Further, the tapered extrusion cavity 20 may have a rectangular, elliptical or other asymmetrical shape, and the shape of the forming outlet 22 may be the same as or different from the shape of the tapered extrusion cavity 20. The molding cavity 21 of the above-mentioned shapes can be formed by a solid molding method and a molding process.

Further, in this embodiment, since the molding cavity 21 is designed to be offset from the molding outlet 22 On the side of the bottom of the extrusion chamber 20 which is tapered in cross section, a long smooth slope is formed between the material inlet end 28 and the forming outlet 22, and the material has to be squeezed into the molding cavity 21 from the side of the smooth slope. The pressure is then extruded from the forming outlet 22, so that the side with the smooth slope constitutes the material introduction side. The molding assembly 2 is fixed on the support body 1. The support body 1 has a certain direction of rotation. Therefore, the molding assembly 2 should be matched with the rotation direction of the support body 1 during assembly so that the material enters from the smooth slope side. The molding cavity 21 is pressed (as shown in Figs. 7 and 19).

Other structures, principles, and effects of the embodiment are the same as those of the embodiment 3, and details are not described herein again. Example 5

This embodiment is basically the same as the foregoing embodiments, except that, as shown in Fig. 16, the end of the forming outlet 22 is provided with an enlarged section 29, and the enlarged area of the enlarged section 29 is larger than the area of the forming outlet 22. The enlarged section 29 may be a cylindrical enlarged section or a dilated enlarged section (illustrated as a tapered enlarged section).

Further, as shown in FIG. 20, a small section of the forming section may be extended at the end of the forming outlet 22 according to the actual extrusion molding; and the enlarged section 29 may be further provided at the rear of the forming section (Fig. 18). Shown).

Other structures, principles, and effects of the present embodiment are the same as those of the foregoing embodiments, and are not described herein again. The above description is only illustrative of the specific embodiments of the invention and is not intended to limit the scope of the invention. Equivalent changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention are intended to be within the scope of the invention.

Claims

Claim

A molding die for a renewable biomass material for forming a loose biomass material, the molding die being composed of a molding assembly and a support; the molding assembly is provided with a plurality of molding cavities, The support body is provided with a joint surface, and a plurality of through holes penetrating through the support body are distributed on the joint surface, the forming component is fixedly disposed on the joint surface of the support body, and each molding cavity on the molding component is respectively provided with a joint a feeding end and a discharging end, wherein the discharging ends of the molding cavities are respectively arranged corresponding to the through holes on the support body; the loose biomass material enters from the molding cavity feeding end on the molding assembly After extrusion molding in the molding cavity, the through hole is formed on the support body corresponding to the discharge end of the molding cavity; and is characterized in that: at the joint portion of the molding assembly and the support body, along the joint surface A plurality of cooling passages communicating with a portion of the through holes on the support body.

The molding die for a renewable biomass material according to claim 1, wherein the cooling passage is provided on a side of the molding assembly of the joint surface of the molding assembly and the support.

The molding die for a renewable biomass material according to claim 1, wherein the cooling passage is provided on a side of the support body of the joint surface of the molding assembly and the support.

4. The molding die of a renewable biomass material according to claim 1, wherein: the cooling passage spans both sides of a joint surface of the molding assembly and the support.

A molding die for a renewable biomass material according to any one of claims 1 to 4, wherein: the ports of the respective cooling passages are in communication with a gas tank.

6. A molding die for a renewable biomass material according to claim 5, wherein: a gas source supplies cooling gas to the gas tank.

The molding die for a renewable biomass material according to claim 5, wherein the support body has a ring shape, and the molding assembly is also annular, and the molding assembly is fixed to the joint surface of the support body to form a ring mold.

The molding die for a renewable biomass material according to claim 7, wherein: the air box is in the shape of a ring groove, and an annular opening is provided on a bottom surface of the annular air box, the air box is disposed on One end of the ring mold, the annular opening is disposed corresponding to a port of each of the cooling channels.

The molding die for a renewable biomass material according to claim 5, wherein: the support body has a flat plate shape, and the molding assembly also has a flat plate shape, and the molding assembly is fixed to the joint surface of the support body to form a flat surface. template.

The molding die of a renewable biomass material according to claim 9, wherein: the air box is in the shape of a ring groove, and an annular opening is provided on an inner ring surface of the annular air box, the ring The air box is disposed around the planar template, and the annular opening is disposed corresponding to the ports of the respective cooling channels.

The molding die of a renewable biomass material according to claim 1, wherein the molding component is composed of a plurality of strip-shaped or plate-like members.

The molding die for a renewable biomass material according to claim 1, wherein the molding assembly and the support body are fixed by screwing.

The molding die for a renewable biomass material according to claim 1, wherein: the molding assembly and the support body are provided with an engagement fixing structure, and the molding assembly is fixed to the molding assembly by the engagement fixing structure. On the support.

14. The molding die of a renewable biomass material according to claim 1, wherein: said molding cavity is uniformly arranged on the molding assembly.

15. The molding die of a renewable biomass material according to claim 1, wherein: a cross-sectional area of the discharge end of the molding cavity is smaller than a cross-sectional area of the through hole of the support.

16. The molding die of a renewable biomass material according to claim 1, wherein: said molding assembly is processed by a precision casting method.

17. The molding die of a renewable biomass material according to claim 1, wherein: the molding cavity on the molding component is integrally molded with the molding component by a precision casting method.

18. The molding die of a renewable biomass material according to claim 1, wherein: the molding cavity on the molding component is integrally formed with a molding component by a machining method.

19. A molding die for a renewable biomass material according to claim 1 wherein: said forming component is made of a ceramic material.

20. The molding die of a renewable biomass material according to claim 1, wherein: said molding component is made of a titanium alloy material.

The molding die of a renewable biomass material according to claim 1, wherein: the molding cavity is formed by an extrusion cavity whose cross-section is tapered toward the discharge end, and is extruded. The bottom of the chamber is provided with a shaped outlet which corresponds to the section of the product after the material has been formed. The material is extruded in the tapered extrusion chamber to a sufficient forming density and extruded from the forming outlet.

22. A molding die for a renewable biomass material according to claim 21, wherein: The forming outlet at the bottom of the pressing chamber is offsetly disposed on one side of the bottom of the pressing chamber, and the material is pressed by the pressing chamber which is tapered toward the cross section of the side corresponding to the offset direction of the forming outlet.

The molding die for a renewable biomass material according to claim 21, wherein: the depth of the extrusion cavity having a tapered cross section on the molding cavity is less than or equal to 10

24. The molding die of a renewable biomass material according to claim 21, wherein: the molding outlet of the molding cavity is connected to a molding section corresponding to the molding outlet.

The molding die for a renewable biomass material according to claim 21, wherein: the molding outlet of the molding cavity is connectable with an enlarged section, and an enlarged outlet area of the enlarged section is larger than a molding outlet area.

The molding die for a renewable biomass material according to claim 21, wherein the shape of the molding outlet corresponds to a cross-sectional shape of the extrusion chamber.

27. A molding die for a renewable biomass material according to claim 21, wherein: said extrusion cavity cross-sectional shape can be circular, rectangular, elliptical, or other asymmetrical shape.

The molding die for a renewable biomass material according to claim 21, wherein: the extrusion cavity has a circular cross-sectional shape, and the molding outlet is also circular, and the axis of the molding outlet and the extrusion cavity The axes of the sections are parallel and spaced apart, the spacing of the two axes being less than or equal to the radius of the circular shaped exit.

29. A molding die for a renewable biomass material according to claim 21, wherein: said molding assembly has a thickness equal to the depth of the extrusion chamber.