阅读说明：本技术 一种双向压缩挤出竹炭板成型模具 (Two-way compression extrusion bamboo charcoal board forming die ) 是由 黄坤华 范有发 陈永禄 陈丁桂 于 2019-10-19 设计创作，主要内容包括：本发明提供了一种双向压缩挤出竹炭板成型模具,其特征在于：包括上机头体、下机头体和设置于两端的封板,所述上机头体和所述下机头体之间设置有供物料流动的流道,所述上机头体和所述下机头体经所述封板作用进行合模,合模的右侧面设置有可插入进料管的连接板,所述连接板与所述流道相配合；所述上机头体上设置有上模唇,所述下机头体上设置有下模唇,所述上机头体上设置有用于调节上模唇进行开合的模唇调节螺栓；本发明结构简单,操作便捷,能针对含竹炭成分的物料进行双向压缩,使得物料密度均匀,挤出速度稳定,提高竹炭板材成型后的质量。(The invention provides a two-way compression extrusion bamboo charcoal board forming die, which is characterized in that: the device comprises an upper machine head body, a lower machine head body and sealing plates arranged at two ends, wherein a flow channel for material flow is arranged between the upper machine head body and the lower machine head body, the upper machine head body and the lower machine head body are matched through the sealing plates, a connecting plate capable of being inserted into a feeding pipe is arranged on the right side surface of matched die, and the connecting plate is matched with the flow channel; the upper machine head body is provided with an upper die lip, the lower machine head body is provided with a lower die lip, and the upper machine head body is provided with a die lip adjusting bolt for adjusting the upper die lip to be opened and closed; the bamboo charcoal board forming machine is simple in structure and convenient and fast to operate, can perform bidirectional compression on materials containing bamboo charcoal components, enables the materials to be uniform in density and stable in extrusion speed, and improves the quality of the formed bamboo charcoal board.)

1. The utility model provides a two-way compression extrusion bamboo charcoal board forming die which characterized in that: the device comprises an upper machine head body, a lower machine head body and sealing plates arranged at two ends, wherein a flow channel for material flow is arranged between the upper machine head body and the lower machine head body, the upper machine head body and the lower machine head body are matched through the sealing plates, a connecting plate capable of being inserted into a feeding pipe is arranged on the right side surface of matched die, and the connecting plate is matched with the flow channel; the upper machine head body is provided with an upper die lip, the lower machine head body is provided with a lower die lip, and the upper machine head body is provided with a die lip adjusting bolt for adjusting the upper die lip to be opened and closed; and the front end and the rear end between the upper machine head body and the lower machine head body are respectively provided with a plate width compression block for compressing the width of the plate, the plate width compression blocks are arranged in the flow channels of the upper die lip and the lower die lip, and the plate width compression blocks are embedded and fixed on the inner side wall of the sealing plate.

2. The forming die for the bi-directional compression extruded bamboo charcoal board as claimed in claim 1, wherein: the upper machine head body and the lower machine head body are fixedly connected through fastening bolts.

3. The forming die for the bi-directional compression extruded bamboo charcoal board as claimed in claim 1, wherein: the upper machine head body is internally provided with a damper for adjusting the size of the flow channel, and the upper machine head body is provided with a damper adjusting bolt for driving the damper to move so as to open and close the flow channel.

4. The forming die for the bi-directional compression extruded bamboo charcoal board as claimed in claim 1, wherein: the flow channel consists of a first flow channel for compression, a second flow channel for gathering materials and a third flow channel for limiting the thickness of discharged materials.

5. The forming die for the bi-directional compression extruded bamboo charcoal board as claimed in claim 1, wherein: the section of the second flow passage is an inclined plane which is asymmetrical relative to the central line of the first flow passage and is connected with the elliptical surface.

6. A two-way compression extrusion bamboo charcoal board forming die as claimed in claim 1, wherein the two-way compression parameters are set within a range of gradually applying compression deformation along the thickness direction of the board along the flow channel, the compression ratio is within a range of 1.5 ~ 3, and the board width compression block is applied with compression deformation along the width direction of the board, the compression ratio is within a range of 1.1 ~ 1.5.5.

Technical Field

The invention relates to the technical field of plate extrusion equipment, in particular to a forming die for a bamboo charcoal plate through bidirectional compression extrusion.

Background

In general, in the production process equipment of the plastic plate, a plate extrusion die needs to be configured, and the structure of the plate extrusion die is mainly used for gradually widening the molten material along the flowing direction to meet the width requirement of the required plate, and meanwhile, the flow velocity along the length direction of the plate is relatively uniform. In the plate extrusion process, the extrusion die is simple in structure, and the extrusion pressure of the molten material in the die cavity is low, so that the material flow speed is not stable enough, the density of the molten material is non-uniform, the thickness of the plate subjected to extrusion molding is changed greatly, and the post-deformation is obvious. In a common extrusion die, a material directly enters a flat seam flow channel for extrusion only through a tiny die lip adjusting area after flowing through a damper, the pressure and the flow rate of the material flow are unstable due to the influence of material viscosity and unstable feeding, the extruded material flow is unstable, the density and the size of an extruded plate are not uniform, and the stability of an extrusion process is difficult to control.

Disclosure of Invention

In view of this, the present invention provides a two-way compression extrusion bamboo charcoal board forming mold, which can perform two-way compression on the thickness and width of a material containing bamboo charcoal components, so that the material density is uniform, the extrusion speed is stable, and the quality of the formed bamboo charcoal board is improved.

The invention is realized by adopting the following method: the utility model provides a two-way compression extrusion bamboo charcoal board forming die which characterized in that: the device comprises an upper machine head body, a lower machine head body and sealing plates arranged at two ends, wherein a flow channel for material flow is arranged between the upper machine head body and the lower machine head body, the upper machine head body and the lower machine head body are matched through the sealing plates, a connecting plate capable of being inserted into a feeding pipe is arranged on the right side surface of matched die, and the connecting plate is matched with the flow channel; the upper machine head body is provided with an upper die lip, the lower machine head body is provided with a lower die lip, and the upper machine head body is provided with a die lip adjusting bolt for adjusting the upper die lip to be opened and closed; and the front end and the rear end between the upper machine head body and the lower machine head body are respectively provided with a plate width compression block for compressing the width of the plate, the plate width compression blocks are arranged in the flow channels of the upper die lip and the lower die lip, and the plate width compression blocks are embedded and fixed on the inner side wall of the sealing plate.

Further, the upper machine head body and the lower machine head body are fixedly connected through fastening bolts.

Furthermore, a damper for adjusting the size of the flow channel is arranged in the upper machine head body, and a damper adjusting bolt for driving the damper to move so as to open and close the flow channel is arranged on the upper machine head body.

Furthermore, the flow channel consists of a first flow channel for compression, a second flow channel for gathering materials and a third flow channel for limiting the thickness of discharged materials.

Further, the cross section of the second flow passage is a bevel which is asymmetrical relative to the central line of the first flow passage and is connected with an elliptical surface.

Furthermore, the setting range of the bidirectional compression parameters is that the compression deformation in the thickness direction of the plate is gradually applied along the flow channel, the compression ratio is in the range of 1.5 ~ 3, and the compression deformation is applied in the width direction of the plate by the plate width compression block, and the compression ratio is in the range of 1.1 ~ 1.5.5.

The invention has the beneficial effects that: the invention can carry out bidirectional compression on the material containing bamboo charcoal, so that the material is subjected to larger thickness compression in the material flow direction, and the board width compression block is added in the device, so that the board is also subjected to a certain amount of compression in the width direction, thereby greatly improving the pressure of the material in the inner cavity of the die, ensuring that the material density is more uniform, the extrusion speed is more stable, and the deformation of the formed board is smaller; the extension flow channel structure for increasing the compression action in the plate thickness direction and the compression action structure in the plate width direction are added; the extrusion die structure of the invention can not only improve the compactness of the material and improve the uniform and stable pressure in the full width range during the extrusion of the material, but also ensure the uniform and stable flow velocity of the extruded material in the full width range, greatly improve the process stability of the extrusion molding of the bamboo charcoal board and improve the size precision of the board.

Drawings

FIG. 1 is a side cross-sectional view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a side view of the present invention.

Fig. 4 is a schematic structural diagram of the plate width compression block.

FIG. 5 is a schematic view of compression molding in the plate thickness direction.

FIG. 6 is a schematic view of compression molding in the width direction of a sheet.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

Referring to fig. 1 to 6, the present invention provides an embodiment: a two-way compression extrusion bamboo charcoal plate forming die comprises an upper machine head body 1, a lower machine head body 2 and sealing plates 3 arranged at two ends, wherein a flow channel for material flow is arranged between the upper machine head body 1 and the lower machine head body 2, the upper machine head body 1 and the lower machine head body 2 are matched through the sealing plates 3, a connecting plate 4 capable of being inserted into a feeding pipe is arranged on the right side surface of the matched die, the connecting plate 4 is matched with the flow channel, so that a worker can insert the feeding pipe into a feeding port 9 of the connecting plate 4, then extrude bamboo charcoal plate raw materials into the upper machine head body 1 and the lower machine head body 2, then introduce the bamboo charcoal plate raw materials into the flow channel, distribute the bamboo charcoal plate raw materials uniformly in the flow channel; an upper die lip 5 is arranged on the upper machine head body 1, a lower die lip 6 is arranged on the lower machine head body 2, and a die lip adjusting bolt 7 for adjusting the upper die lip 5 to be opened and closed is arranged on the upper machine head body 1, so that a worker can open and close the upper die lip 5 and the lower die lip 6 by rotating the die lip adjusting bolt 7 to limit the thickness of the bamboo charcoal board; the upper machine head body 1 and the lower machine head body 2 are provided with plate width compression blocks 8 used for compressing the width of the plate at the front end and the rear end, the plate width compression blocks 8 are arranged in the flow channels of the upper die lip 5 and the lower die lip 6, the plate width compression blocks 8 are embedded and fixed on the inner side wall of the sealing plate 3, the plate width compression blocks 8 can perform a certain amount of compression effect on the width direction of the plate, the thickness of the plate is compressed through the flow channels, the pressure of the material in the inner cavity of the die is greatly increased, the material density is more uniform, the extrusion speed is more stable, and the deformation after the plate is molded is smaller.

According to the invention, the plate width compression block 8 and the closing plate 3 are stacked together, the flow channels at two ends of the die close to the die lip part are sealed by the plate width compression block 8, and the flow channels at other parts at two ends of the die are sealed by the closing plate 3.

The board width compression block 8 can be replaced by board width compression blocks of different types according to different formulas and different board thickness requirements of the bamboo charcoal board so as to meet the extrusion molding requirements of different bamboo charcoal boards.

The bidirectional compression parameter setting range of the invention is that the compression deformation in the thickness direction of the plate is gradually applied along the flow channel, the compression ratio range is 1.5 ~ 3, the compression deformation is applied by the plate width compression block in the width direction of the plate, the compression ratio range is 1.1 ~ 1.5.5, the compression ratio in the thickness direction is 1.5 or 2, and the compression ratio in the width direction is 1.1 or 1.3, but the invention is not limited to the bidirectional compression parameter setting range.

The plate width compression block 8 of the invention can also be provided with a heating temperature control device, so that the heating temperature control device can heat materials during compression, and the heating temperature control device can be not arranged, and does not need to be provided.

Referring to fig. 1, in an embodiment of the present invention, the upper machine head body 1 and the lower machine head body 2 are connected and fixed by a fastening bolt 9.

Referring to fig. 1, in an embodiment of the present invention, a damper 10 for adjusting the size of the flow channel is disposed in the upper machine head body 1, and a damper adjusting bolt 11 for driving the damper 10 to move so as to open and close the flow channel is disposed on the upper machine head body 1, so that a worker can control the damper 10 to move up and down through the damper adjusting bolt 11, so that the damper 10 can open and close the flow channel to adjust the material flow and the flow rate in the flow channel.

With continued reference to fig. 1, 5 and 6, in an embodiment of the present invention, the flow channel is composed of a first flow channel 12 for compression, a second flow channel 13 for material accumulation, and a third flow channel 14 for limiting the thickness of the discharged material. The discharge port flow channel structure is composed of a first flow channel 12, a second flow channel 13 and a third flow channel 14 in the plate thickness direction, the third flow channel 14 preliminarily compresses molten materials, and then the materials enter the area of the second flow channel 13 to be accumulated again, because the first flow channel 12 is a flat seam-shaped outlet, the size of the first flow channel 12 is much smaller than that of the second flow channel 13, the pressure of a large amount of materials accumulated in the area of the second flow channel 13 is increased, the pressure tends to be uniform and stable, and the compression effect of the plate thickness direction A, B on the materials is realized. When the molten material flows through the second flow channel 13 and the first flow channel 12, the molten material is also subjected to the inclined surface effect of the plate width compression block from the plate width direction, and is subjected to the pressure in the plate width C, D direction to form the compression effect in the plate width direction, so that the pressure of the material melt accumulated in the second flow channel 13 is improved, the density and the pressure stability of the molten material are improved, and the molten material extruded from the first flow channel 12 is more uniform and stable.

Referring to fig. 1, in an embodiment of the present invention, the cross section of the second flow channel 13 is connected to an elliptical surface by an inclined surface asymmetric with respect to the center line of the first flow channel 12. The symmetrical inclined planes can be connected with the cylindrical surface, so that the molten material is convenient to gather and flows smoothly.

The working principle of the invention is as follows: when the device is used, bamboo charcoal board materials melted and extruded by an extruder plasticizing system firstly enter a central main flow channel formed by an upper machine head body and a lower machine head body, and are expanded along the width direction of a clothes hanger type flow channel to form a flat material flow with the maximum width, and then the flow speed of the material flow is properly adjusted through a part of flow channels of a damper to keep a stable forward flow state; then the material enters a partial flow channel of a compression area in the thickness direction of the extrusion die to perform compression action on the material in the thickness direction, so that the pressure of the material flow is improved, the flow rate of the material is further improved, the material continuously flows forwards to enter a flow channel of a material accumulation area, and simultaneously is subjected to the action of compression blocks in the width direction of the plate arranged at two sides of the flow channel area, so that the material accumulated in the area is simultaneously subjected to the compression action in the width direction of the plate and the flow extrusion action of the material flow in the thickness direction of the plate, the material is subjected to bidirectional compression action in the area, the density of the material is improved, the pressure is more stable, and finally the material flow is uniformly extruded from a flat seam flow channel formed by an upper die lip and a lower die lip under the constant pressure and flow rate state to form.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.