CN103659987B - Twin-tower extrusion device and method for extruding wood chips using the twin-tower extrusion device - Google Patents

Abstract

The invention relates to a double-tower extrusion device and a method for extruding wood chips by using the same. The double-tower extrusion device comprises a base, a first extrusion tower and a second extrusion tower which are fixed at the upper end of the base, a main pressing area positioned in the middle of the base and a storage bin communicated with the first extrusion tower and the second extrusion tower, wherein the first extrusion tower comprises a first packed tower and a first packed oil cylinder positioned above the first packed tower, the second extrusion tower comprises a second packed tower and a second packed oil cylinder positioned above the second packed tower, the main pressing area comprises a die cavity positioned below the first extrusion tower and the second extrusion tower, and the die cavity comprises a first cavity part and a second cavity part which are respectively and rightly communicated with the first packed tower and the second packed tower in the vertical direction.

Description

Twin-tower extrusion device and method for extruding wood chips using the twin-tower extrusion device

technical field

The invention relates to an extrusion device for wood processing, in particular to a double-tower extrusion device for wood processing.

Background technique

At present, when transporting wood scraps such as papermaking wood chips at home and abroad, they usually use the form of bulk sea transportation. The volume of wood is large, resulting in high transportation costs. For this reason, how to reduce the volume occupied by wood has become the primary issue in the industry.

To solve this problem, the industry has developed a single-tower extrusion device as shown in Figures 1 and 2. The single-tower extrusion device includes a packing cylinder 10a, a packing tower 10b, a mold cavity 10c, a feed bin 10d, and a main pressure cylinder 10f. The packing oil cylinder 10a is located above the packing tower 10b, and the packing tower 10b communicates with the mold cavity 10c and is arranged in front and rear positions. The wood enters the packing tower 10b from the silo 10d, and enters the mold cavity 10c after being compressed in the vertical direction by the packing oil cylinder 10a. However, after the wood is compressed in the vertical direction, it usually cannot fill the upper part of the mold cavity 10c, so the wood that enters the mold cavity 10c is extruded into the finished wood block 10g by the main pressure oil cylinder 10f in the horizontal direction, which will easily lead to the appearance of wood. The thickness of the front end of the block is different and the problem of layering leads to the difficulty of palletizing 10g of finished wood blocks. In this way, how to form wood with regular shape, uniform thickness and regular size has become a major problem to be solved by the industry.

Contents of the invention

In view of this, it is necessary to provide a double-tower extrusion device capable of forming wood with regular shape, uniform thickness and regular size and a method for extruding wood chips using the double-tower extrusion device.

Wherein, the double-tower extrusion device includes a machine base, a first extrusion tower and a second extrusion tower fixed on the upper end of the machine base, a main press zone located in the middle of the machine base, and the first extrusion tower and the second extrusion tower. The extruding tower is connected to the silo, the first extruding tower includes a first packing tower and a first packing oil cylinder located above the first packing tower, and the second extruding tower includes a second packing tower and a second packing tower located on the second packing tower. The second packing oil cylinder above the packing tower, the main pressure zone includes a mold cavity located below the first extrusion tower and the second extrusion tower, and the mold cavity includes a mold cavity that is vertically connected to the first packing tower and the second extrusion tower respectively. The first cavity and the second cavity that are directly opposite to and communicated with the second packed tower;

Utilize the method for extruding wood chip of above-mentioned twin-tower extruding device to comprise the steps:

Provide uncompressed wood chips, which are conveyed into the silo;

The wood chips are alternately sent from the silo to the first packing tower and the second packing tower;

Start the first packing oil cylinder and the second packing oil cylinder, make the first packing oil cylinder and the second packing oil cylinder press the wood chips in the first packing tower and the second packing tower vertically downward respectively, and press these wood chips into the first packing tower successively. cavity and the second cavity to complete the primary compression of wood chips and form primary wood blocks.

In the present invention, because the first cavity portion and the second cavity portion of the mold cavity are vertically opposite to and communicated with the first packed tower and the second packed tower respectively, in this way, the uncompressed wood chips pass through the first packed tower And the second packing tower can be directly compressed into the first mold cavity and the second mold cavity along the vertical direction, so that the wood blocks compressed in the first stage can directly fill up the first mold cavity and the second mold cavity, so , which can ensure that the thickness of the wooden blocks after the two-stage compression is uniform and uniform, and the shape is regular, which is convenient for stacking.

The present invention will be further described below in conjunction with specific embodiments with reference to the accompanying drawings.

Description of drawings

Fig. 1 is a cross-sectional view of a prior art single-column extrusion device along a certain viewing angle.

Fig. 2 is a cross-sectional view of a prior art single-column extrusion device along another viewing angle.

Fig. 3 is a front view of the twin-tower extrusion device of the present invention.

Fig. 4 is a cross-sectional view of the twin-tower extrusion device shown in Fig. 3 along section B-B.

Fig. 5 is a left side view of the twin-tower extrusion device of the present invention.

Fig. 6 is a cross-sectional view of the twin-tower extrusion device shown in Fig. 5 along section A-A.

Description of main component symbols

Packing cylinder 10a

Packed tower 10b

Cavity 10c

Silo 10d, 90

Main pressure cylinder 10f, 71

Finished wood block 10g, 83

Base 10

The first extrusion tower 30

The first packed tower 31

First packing cylinder 33

The second extrusion tower 50

The second packed tower 51

Second filling cylinder 53

Main Ballast 70

Die warehouse 73

Secondary compression chamber 75

Friction device 77

Reverse thrust cylinder 79

Primary Wood Block 80

Intermediate Wood Block 81

Cavity 731

Cavity Cylinder 733

First Chamber 7311

Second Chamber 7312

The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings.

Detailed ways

Referring to Fig. 3 and Fig. 4, the twin-tower extruding device of the present invention includes a machine base 10, a first extrusion tower 30 and a second extrusion tower 50 fixed on the upper end of the machine base 10, and a main extrusion tower located in the middle of the machine base 10. The press zone 70 and the silo 90 located above the main press zone 70 and communicated with the first extrusion tower 30 and the second extrusion tower 50 are provided.

The base 10 is rectangular, and its bottom is fixed on a target area, such as a machine table or the ground, for supporting components thereon.

The first extrusion tower 30 and the second extrusion tower 50 are arranged side by side and spaced apart and located above the main nip 70 . The first extrusion tower 30 includes a first packed tower 31 and a first packed cylinder 33 located above the first packed tower 31 . The first packed tower 31 is a hollow cylinder. The structure of the second extrusion tower 50 is the same as that of the first extrusion tower 30 , including a second packing tower 51 and a second packing cylinder 53 located above the second packing tower 51 . The second packed tower 51 is a hollow cylinder.

Please refer to Figure 5 and Figure 6 at the same time, the main pressure zone 70 includes a main pressure cylinder 71 arranged in the horizontal direction, a mold chamber 73 connected to the main pressure cylinder 71, and a secondary compression chamber 75 communicated with the mold chamber 73 , the friction chamber 77 communicated with the secondary compression chamber 75 and the reverse thrust oil cylinder 79 connected with the friction chamber 77 and fixed to the friction chamber 77.

Please refer to FIG. 4 again, the mold chamber 73 includes a mold cavity 731 that can move horizontally relative to the machine base 10 and a mold cavity cylinder 733 connected to one end of the mold cavity 731 . The cavity 731 includes a first cavity 7311 and a second cavity 7312 spaced apart from each other. The mold cavity cylinder 733 pushes the mold cavity 731 to move, so that the first cavity part 7311 and the second cavity body 7312 are vertically opposite and connected to the first packed tower 31 and the second packed tower 51 or located in the first packed tower 31 and the second packed tower 51. Between the packed tower 31 and the second packed tower 51, the horizontal direction is opposite to the main pressure oil cylinder. The heights of the secondary compression cavity 75 , the friction cavity 77 , the first cavity portion 7311 and the second cavity portion 7312 along the vertical direction are equal.

The process of processing wood by the twin-tower extrusion device is purely physical extrusion, without adding any adhesive during the processing, which not only ensures the shape of the wood block, but also does not damage the wood fiber.

Please refer to Fig. 4 and Fig. 6 again, the method of extruding wood chips using the twin-tower extrusion device is as follows: the uncompressed wood chips are transported into the silo 90 through the conveying equipment (not shown), and then the wood chips pass through the hopper The screw conveying system (not shown) at the bottom of the bin 90 enters the first packed tower 31. At this time, the first cavity part 7311 of the mold cavity 731 is facing the bottom of the first packed tower 31, and the second cavity part 7312 is located in the first packed tower 31. The position between the column 31 and the second packed column 51. Then start the first packing oil cylinder 33, make the first packing oil cylinder 33 squeeze the wood chips in the first packing tower 31 vertically downwards, these wood chips are pressed into the first die cavity 7311 and complete the primary compression of the wood chips to form primary wood chips Block 80. Then the mold cavity cylinder 733 pushes the mold cavity 731 to move along the base 10 until the top of the second cavity 7312 communicates with the bottom of the second packed tower 51. At this time, the first cavity 7311 is separated from the first packed tower 31. It is located between the first packed tower 31 and the second packed tower 51 at a position corresponding to the horizontal direction of the main pressure cylinder 71 . Then, the uncompressed wood chips enter the second packing tower 51 through the screw conveying system (not shown) at the bottom of the silo 90, and then start the second packing cylinder 53, so that the second packing cylinder 53 presses the first packing cylinder vertically downward. The wood chips in the second packing tower 51 are pressed into the second die cavity 7312 to complete the primary compression of the wood chips to form the primary wood block 80 . At the same time, the main pressure cylinder 71 presses the primary block 80 in the first cavity 7311 into the secondary compression cavity 75 along the horizontal direction and completes the secondary compression to form the intermediate block 81 located in the secondary compression cavity 75 , the inside of the first cavity 7311 is empty at this time; then the cavity 731 is pulled by the cavity cylinder 733 to move, so that the second cavity 7312 is separated from the second packed tower 51 and is located between the first packed tower 31 and the second packed tower 51 The position corresponding to the main pressure cylinder 71, and then repeat the steps of secondary compression of the primary wood block 80 in the first cavity 7311 to perform secondary compression on the primary block 80 in the second cavity 7312 to form an intermediate block 81. At this time, the intermediate block 81 formed earlier is pushed into the friction chamber 77 by the intermediate block 81 formed later, and under the reaction force provided by the friction chamber 77 and the reverse thrust cylinder 79, the intermediate block 81 is further compressed in the reverse direction , so as to form a finished wood block 83, and the finished wood block 83 is pushed out from the outlet at the front end of the main nip 70. The above steps are then repeated multiple times, thereby producing and forming a plurality of finished wooden blocks 83 . The volume ratio of the finished wood blocks 83 to uncompressed wood chips is 1:5.

In the present invention, since the uncompressed wood chips are directly compressed into the first cavity 7311 and the second cavity 7312 from the first packing tower 31 and the second packing tower 51 in the vertical direction, the primary wood chips compressed in the first stage The block 80 can directly fill up the first cavity 7311 and the second cavity 7312, so that the thickness of the intermediate block 81 after the secondary compression can be guaranteed to be uniform and uniform, the shape is regular, and it is convenient for stacking. Moreover, in the present invention, the intermediate wood block 81 is further compressed by the reverse thrust, thereby making the finished wood block 83 more compact everywhere and avoiding the occurrence of delamination problems. Moreover, in the present invention, the intermediate blocks 81 in the first die cavity 7311 and the second die cavity 7312 are alternately extruded by the alternate feeding of the first extrusion tower 30 and the second extrusion tower 50 and the main pressure cylinder 71 And it realizes the first-level compression and the second-level compression of wood chips at the same time, which increases the production capacity of wood chip compression by 30%-50%.

Claims (3)

1. utilize double-tower extrusion device to extrude a method for wood chip, comprise the steps:

Double-tower extrusion device is provided, wherein, described double-tower extrusion device comprises support, be fixed on the first crush tower and second crush tower of support upper end, be positioned at the main nip in the middle part of support and be communicated with the first crush tower and the second crush tower the feed bin arranged, described first crush tower comprises the first packed tower and is positioned at the first filler oil cylinder above the first packed tower, described second crush tower comprises the second packed tower and is positioned at the second filler oil cylinder above the second packed tower, described main nip comprises the mould storehouse be positioned at below the first crush tower and the second crush tower, described mould storehouse comprises die cavity, described die cavity comprises in the vertical direction respectively and is communicated with the first chamber portion and the second chamber portion that arrange with the first packed tower and the second packed tower,

The wood chip of uncompressed is provided, wood chip is conveyed into feed bin;

Feeding first packed tower that wood chip is replaced from feed bin and the second packed tower;

Start the first filler oil cylinder and the second filler oil cylinder, make the first filler oil cylinder and the second filler oil cylinder extrude wood chip in the first packed tower and the second packed tower respectively straight down, successively these wood chips be pressed into respectively the first die cavity and the second die cavity and complete the one stage of compression of wood chip and form elementary wooden unit;

Wherein, the side of described die cavity is fixed with die cavity oil cylinder, die cavity described in described die cavity oil cylinder pushing along support move and make the first chamber portion be communicated with the first packed tower or be separated with the first packed tower and between the first packed tower with the second packed tower, the second chamber portion is communicated with the second packed tower or is separated with the second packed tower and between the first packed tower and the second packed tower.

2. utilize double-tower extrusion device to extrude the method for wood chip as claimed in claim 1, it is characterized in that: described main nip comprises main compressing cylinder and connects the two-stage compression chamber of main compressing cylinder, while carrying out one stage of compression, elementary wooden unit in the described first chamber portion of extruding that described main compressing cylinder horizontal directions is replaced and the second chamber portion, is squeezed into two-stage compression chamber by elementary wooden unit and completes two-stage compression and form the intermediate wooden unit being positioned at two-stage compression chamber.

3. utilize double-tower extrusion device to extrude the method for wood chip as claimed in claim 2, it is characterized in that: described main nip also comprises friction lumen and is fixed on the anti-push oil cylinder of friction lumen, the intermediate wooden unit first formed is pushed in friction lumen by the intermediate wooden unit of rear formation, under the reaction force that friction lumen and anti-push oil cylinder provide jointly, middle rank wooden unit by further reverse compression, thus forms finished product wooden unit.