JP2017001274A - Upward direction cutting type chip manufacturing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an upward cutting type chipper manufacturing apparatus capable of stably maintaining a posture of wood to be processed upon upward cutting and, thereby, capable of manufacturing wood chips having an aligned shape.SOLUTION: An upward direction cutting type chipper manufacturing apparatus 1 performs upward direction cutting of wood W to be processed fed into a grinding rotor 4 while being held by a conveyer 2 and an upper feeding roller device 3 from the lower side to the upper side with a chipper knife 12 to fragment the wood to be processed according to rotary movement of a rotor 11. Therein, a mass of the upper feeding roller device 3 is set such that a pressing-down force which presses down the wood W to be processed onto the conveyer 2 such that the wood W to be processed is not floated up from the conveyor 2 with upward direction cutting force which actuates the wood W to be processed from the chipper knife 12 upon upward cutting of the wood W to be processed by means of the chipper knife 12 actuates the wood W to be processed according to a dead load of the upper feeding roller device 3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a chip manufacturing apparatus suitable for use in manufacturing wood chips used for biomass power generation, pulp manufacturing, and the like by pulverizing wood to be treated such as felled trees and pruned branches.

As shown in FIG. 2A, this type of conventional chip manufacturing apparatus 100 should be pulverized with a pulverizing rotor 103 in which a required cutting blade (chipper knife) 102 is mounted on the outer periphery of the rotor 101. A conveyor 104 for conveying the wood to be treated W to the grinding rotor 103 while supporting the wood to be treated from the lower side, and a rocking rotor disposed above the conveyor 104 so as to be able to swing up and down, and applying the pressing force by its own weight. 2 (a) in FIG. 2 (a) of the rotor 101. An upper feed roller device 105 for feeding to the machine 103 and the wood to be treated W fed to the crushing rotor 103 in a state of being sandwiched between the conveyor 104 and the upper feed roller device 105. The cutting blade 102 cuts downward from the upper side to the lower side by the rotational movement in the direction of the _RC arrow, and is fragmented (for example, see Patent Document 1). See).
Here, the upper feed roller device 105 has an upper feed roller 106 in which a plurality of blades 106 b are fixed to the outer peripheral portion of the roller body 106 a and a base end portion attached to both side walls of the casing 108 via a pivot shaft 107. The upper feed roller 106 is rotatably attached to the distal end portion of the swing arm 109 via the rotation support shaft 110, and is provided on the conveyor 104. It is possible to swing up and down at a position above the downstream end in the transport direction.

  In this chip manufacturing apparatus 100, an appropriate positional relationship (cooperation with the cutting blade 102) is established between the grinding rotor 103 and the conveyor 104 with respect to the locus of the cutting blade 102 formed during the rotational movement of the powder rotor 103. Thus, an anvil (fixed blade) 111 that supports the treated wood W from the lower side in a highly efficient manner) is disposed. As a result, when the cutting wood 102 is cut downward with respect to the wood to be treated W, the wood to be treated W is stably supported from below by the anvil 111, so that the posture of the wood to be treated W is stable and the shape is A complete wood chip can be produced.

On the other hand, there is a wood crusher 120 that applies crushing force and striking force to the wood W to be processed and crushes it, and this type of wood crusher 120 has a rotor as shown in FIG. A crushing rotor 123 in which a required bladed hammer 122 is swingably mounted on the outer periphery of 121, a conveyor 124 for conveying the wood W to be crushed from below to the crushing rotor 123, and a conveyor And an upper feed roller device 125 that feeds the wood to be processed W to the crushing rotor 123 while applying a pressing force due to its own weight, and is provided with a conveyor 124 and an upper feed roller device 125. The to-be-processed wood W sent to the crushing rotor 123 in a state of being sandwiched by the rotor is rotated by a hammer with a blade by rotating the rotor 121 in the direction of the arrow _RD in FIG. In 122, an upward cutting force and an upward striking force are applied from the lower side to the upper side for crushing (see, for example, Patent Document 2).
Here, the upper feed roller device 125 has an upper feed roller 126 in which a plurality of blades 126b are fixed to the outer peripheral portion of the roller main body 126a, and a base end portion attached to both side walls of the casing 128 via a pivot shaft 127. The upper feed roller 126 is rotatably attached to the distal end portion of the swing arm 129 via the rotation support shaft 130, and is connected to the conveyor 124. It is possible to swing up and down at a position above the downstream end in the transport direction.

  However, in the wood crusher 120 shown in FIG. 2 (b), there is no equivalent to the anvil 111 (see FIG. 2 (a)) that stably maintains the posture of the treated wood W during cutting. When cutting the wood to be treated W from the lower side to the upper side with the bladed hammer 122, the wood to be treated W is lifted from the conveyor 124 by the upward cutting force acting on the wood to be treated W from the hammer with blade 122. In some cases, the posture of the wood to be treated W is not stable and the shape of the wood chips is not uniform.

JP 2014-058044 A JP 2014-226593 A

  The present invention has been made in view of the above-described problems, and can stably maintain the posture of the wood to be treated at the time of upward cutting, whereby a wood chip having a uniform shape can be manufactured. An object of the present invention is to provide an upward cutting type chipper manufacturing apparatus.

In order to achieve the above object, an upward cutting type chipper manufacturing apparatus according to the present invention comprises:
A crushing rotor with a required cutting blade attached to the outer periphery of the rotor, a conveyor for conveying the wood to be crushed from below to the crushing rotor, and swinging up and down above the conveyor And an upper feed roller device that feeds wood to be processed to the crushing rotor while applying a pressing force due to its own weight, and is sandwiched between the conveyor and the upper feed roller device to the crushing rotor. An upward cutting chipper manufacturing apparatus in which wood to be treated is cut upward from the lower side to the upper side with the cutting blade by the rotary motion of the rotor, and is crushed into pieces,
During upward cutting of the wood to be treated by the cutting blade, the wood to be treated is pressed onto the conveyor so that the wood to be treated is not lifted from the conveyor by an upward cutting force acting on the wood to be treated from the cutting blade. The mass of the upper feed roller device is set so that the pressing force to be applied acts on the wood to be treated by the weight of the upper feed roller device.

According to the present invention, when the cutting wood is cut upward by the cutting blade, the processing wood is pressed onto the conveyor so that the cutting wood does not float from the conveyor by the upward cutting force acting on the processing wood from the cutting blade. The mass of the upper feed roller device is set so that the pressing force to be applied acts on the treated wood by the weight of the upper feed roller device. The posture of the wood can be kept stable, and the wood chip having the same shape can be manufactured.
In addition, by changing a part of the structure of the upward-cutting-type wood crusher, the wood crusher can be easily remodeled and diverted to the chip manufacturing apparatus of the present invention.

FIG. 1 is a side view showing an internal structure of a main part of an upward cutting type chip manufacturing apparatus according to an embodiment of the present invention. 2A and 2B are explanatory views of the prior art, in which FIG. 2A is a side view showing the internal structure of the main part of the downward cutting type chip manufacturing apparatus, and FIG. 2B is the internal structure of the main part of the upward cutting type wood crusher. FIG.

  Next, specific embodiments of the upward-cutting chip manufacturing apparatus according to the present invention will be described with reference to the drawings. The embodiment described below is an example in which the present invention is applied to an apparatus for pulverizing, for example, logs derived from thinned timber as wood to be treated for production of wood chips for biomass power generation. It is not limited. For example, it can be applied to the production of pulp chips.

<Outline description of upward cutting type chip manufacturing apparatus>
An upward cutting type chip manufacturing apparatus (hereinafter simply referred to as a “chip manufacturing apparatus”) 1 shown in FIG. 1 mainly includes a conveyor 2, an upper feed roller device 3, a crushing rotor 4, and an upper feed roller device 3. And a casing 5 that accommodates the crushing rotor 4 and the like, and is configured to fragment the wood to be processed W fed to the crushing rotor 4 while being sandwiched between the conveyor 2 and the upper feed roller device 3.

<Description of conveyor>
The conveyor 2 is a drag chain conveyor including a drag chain 6 disposed so as to form an endless track between a hopper (not shown) and the crushing rotor 4, and the drag chain 6 is driven by a transport motor (not shown). Thus, the wood to be processed W placed on the drag chain 6 through a hopper (not shown) is conveyed to the grinding rotor 4 while being supported from below.
In addition, as the conveyor 2, for example, one that transports the wood to be processed W using an iron crawler belt plate, one that transports the wood to be processed W by a rubber belt, or an inclined chute is used. And the like, which transports the wood W to be treated using the gravitational action.

<Description of upper feed roller device>
The upper feed roller device 3 has an upper feed roller 7 in which a plurality of blades 7b are fixed to the outer peripheral portion of the roller body 7a, and a base end portion attached to both side walls of the casing 5 via pivot shafts 8 and a distal end. A swing arm 9 that can swing up and down is provided.
The upper feed roller 7 is rotatably attached to the tip end portion of the swing arm 9 via a rotation support shaft 10 and can swing up and down at a position above the downstream end portion in the transport direction of the conveyor 2.
In the upper feed roller device 3, the upper feed roller 7 is illustrated by the operation of a feed motor (not shown) while applying a pressing force due to its own weight to the treated wood W via the upper feed roller 7 riding on the treated wood W. by being rotated in one of the symbols R _a arrow direction, and is capable to deliver forced to crushing rotor 4 to be treated wood W.

<Description of grinding rotor>
The crushing rotor 4 is configured by mounting the required (four in this example) chipper knives 12 (corresponding to the “cutting blade” of the present invention) on the rotor 11.
The rotor 11 includes a rotor shaft 13 having a horizontal axis perpendicular to the conveying direction of the wood W to be processed and rotatably supported on both side walls of the casing 5, and a rotor shaft that is concentric with the rotor shaft 13. and a Chippadoramu 14 attached to 13, the rotational power from not shown rotor driving motor is transmitted to the rotor shaft 13, Chippadoramu 14 in FIG. 1 symbols R _B arrow direction (clockwise direction in FIG. 1) It is rotated.
The chipper drum 14 has a plurality of (four in this example) cutout portions 14a in which portions near the outer periphery are cut out at intervals of a predetermined angle (for example, 90 °), and each cutout portion 14a includes the chipper drum 14. The chipper knife 12 is arranged with the cutting edge directed in the rotational direction, and the chipper knife 12 is fixed to the chipper drum 14 by fixing means 15 that fixes the chipper knife 12 by applying a clamping force.

In the chip manufacturing apparatus 1 configured as described above, when the wood to be treated W is put into a hopper (not shown), the wood to be treated W is supported from below by the drag chain 6 of the conveyor 2. However, it is continuously conveyed toward the grinding rotor 4. When the wood to be processed W is transported to the position of the top feed roller 7 by the transport conveyor 2, the top feed roller 7 rotated in the direction of the arrow _{RA in} FIG. To do. Then, the upper feed roller device 3 forcibly moves the wood W to be processed to the grinding rotor 4 while applying a pressing force due to its own weight (a force generated by a gravitational action according to the mass of the upper feed roller 3 and the swing arm 9). To send. Thus, the treated wood W pressed against the grinding rotor 4 in a state of being held between the conveyor 2 and the upper feed roller unit 3 is fed to grinding rotor 4, in Fig. 1 of the rotor 11 symbols R _B arrow direction By the rotary motion, the chipper knife 12 cuts upward from the lower side to the upper side and is fragmented.

  In this chip manufacturing apparatus 1, since there is not provided an equivalent to the anvil 111 (see FIG. 2A) that stably maintains the posture of the treated wood W during cutting, the chipper knife 12 is applied to the treated wood W. When cutting upward from the lower side to the upper side, the to-be-treated wood W is lifted from the conveyor 2 by the upward cutting force acting on the to-be-treated wood W from the chipper knife 12, and the posture of the to-be-treated wood W is not stabilized. There is a risk of inconvenience that the shape of the wood chip is not uniform.

Therefore, in the chip manufacturing apparatus 1 of the present embodiment, the wood to be treated W is conveyed by the conveyor 2 by the upward cutting force acting on the wood to be treated W from the chipper knife 12 when the wood to be treated W is cut upward by the chipper knife 12. The mass of the upper feed roller device 3 is set such that a pressing force that presses the treated wood W onto the conveyor 2 so as not to lift from the conveyor 2 acts on the treated wood W by the weight of the upper feed roller device 3. ing. Here, the upper feed roller device 3 is configured by increasing the amount of the conventional upper feed roller devices 105 and 125. As a technique for this, for example, a weight is added to the upper feed rollers 106 and 126. The thickness of the members constituting the upper feed rollers 106, 126 is increased, the weight is added to the swing arms 109, 129, or the thickness of the members constituting the swing arms 109, 129 is increased. Etc.
As a result, when the wood to be treated W is cut upward by the chipper knife 12, even if the wood to be treated W is lifted from the conveyor 2 by the upward cutting force from the chipper knife 12, it is caused by the weight of the upper feed roller device 3. The wood to be treated W is pressed onto the conveyor 2 by the pressing force, and the posture of the wood to be treated W is stably maintained.
Therefore, the upward cutting operation | movement to the to-be-processed wood W by the chipper knife 12 is performed stably, and the wood chip with the same shape can be manufactured.

In the wood crusher 120 shown in FIG. 2 (b), the crushing rotor 4 is adopted instead of the crushing rotor 123, and the mass of the upper feed roller 126 and / or the swing arm 129 is increased to increase the amount. Due to the weight of the feed roller device 125, the wood to be treated W is not lifted from the conveyor 124 by the upward cutting force that acts on the wood to be treated W from the chipper knife 12 when the wood to be treated W is cut upward by the chipper knife 12. If a pressing force for pressing the wood to be processed W onto the conveyor 124 is applied to the wood to be processed W, as with the above-described chip manufacturing apparatus 1, the weight of the increased feed roller device 125 is increased. Since the wood to be treated W is pressed onto the conveyor 124 by the pressing force, the posture of the wood to be treated W is stably maintained. Direction cutting operation on to the treated wood W is performed stably by IF 12, it is possible to produce a wood chip shape are aligned.
In this way, the positional relationship of the components of the wood crusher 120 remains the same, and the crushing rotor 4 is used instead of the crushing rotor 123 or the mass of the upper feed roller device 125 is increased. By changing a part of the structure, the wood crusher 120 can be easily remodeled into the chip manufacturing apparatus 1 and can be diverted.

  As mentioned above, although the upward cutting type chip manufacturing apparatus of the present invention has been described based on one embodiment, the present invention is not limited to the configuration described in the above embodiment, and is appropriately within a range not departing from the gist thereof. The configuration can be changed.

  The upward cutting type chip manufacturing apparatus of the present invention has a characteristic that it can stably maintain the posture of the wood to be processed during upward cutting, and can thereby manufacture a wood chip having a uniform shape. Therefore, for example, it can be suitably used for the purpose of producing wood chips for biomass power generation by crushing logs from thinned wood, or for producing wood chips for pulp. is there.

DESCRIPTION OF SYMBOLS 1 Upward cutting type chipper manufacturing apparatus 2 Conveyor 3 Upper feed roller apparatus 4 Grinding rotor 5 Casing 6 Drag chain 7 Upper feed roller 9 Swing arm 11 Rotor 12 Chipper knife (cutting blade)
15 Fixing means W Wood to be treated

Claims (1)

A crushing rotor with a required cutting blade attached to the outer periphery of the rotor, a conveyor for conveying the wood to be crushed from below to the crushing rotor, and swinging up and down above the conveyor And an upper feed roller device that feeds wood to be processed to the crushing rotor while applying a pressing force due to its own weight, and is sandwiched between the conveyor and the upper feed roller device to the crushing rotor. An upward cutting chipper manufacturing apparatus in which wood to be treated is cut upward from the lower side to the upper side with the cutting blade by the rotary motion of the rotor, and is crushed into pieces,
During upward cutting of the wood to be treated by the cutting blade, the wood to be treated is pressed onto the conveyor so that the wood to be treated is not lifted from the conveyor by an upward cutting force acting on the wood to be treated from the cutting blade. An upward cutting type chipper manufacturing apparatus, wherein the mass of the upper feed roller device is set such that a pressing force to be applied acts on the wood to be processed by the weight of the upper feed roller device.

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