Wood processing device
By designing an automated wood processing device, the sawing and tipping mechanisms are used to achieve automatic removal of wood edge skin, which solves the problems of high labor intensity, high safety hazards and low efficiency in traditional wood processing, and improves the yield rate and production efficiency. Reduced costs.
Patent Information
- Application Number
- CN202420404231.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-01
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-03-01
AI Technical Summary
The traditional wood processing and production model has high labor intensity, great safety hazards, complex mechanical structure, low efficiency, low material yield and high cost. Especially in the removal of edge skin, manual assistance is required, and the efficiency and safety are insufficient.
Design a wood processing device, including a first sawing mechanism, a first skin separation mechanism, a push-down mechanism and a second sawing mechanism, and realizes automatic removal of the wood skin through sequential connections, and uses a sawing conveying line and a push-down detection part. and other components to realize automatic commutation of wood and edge separation, simplifying mechanical structure.
It improves the degree of automation of wood processing, improves the yield and production efficiency, reduces production costs, and improves safety, and realizes the automatic removal of wood edge skin without manual assistance.
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Figure CN222290470U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of wood processing and production, in particular to a wood processing device. Background Art
[0002] The general process of wood processing and production is: cut the original strips into wood sections of a certain length according to standard or special regulations on size, shape, quality, and continue to obtain square materials or boards through processes such as peeling and sawing.
[0003] The traditional production mode of wood peeling and sawing and squaring is to set up two multi-blade saws and cooperate with manual work. The first multi-blade saw is responsible for sawing the upper and lower bark of the wood, and the second multi-blade saw is responsible for sawing the left and right bark of the wood and squaring it. Each multi-blade saw is equipped with at least two workers to work at the feed inlet and discharge outlet of the multi-blade saw respectively, responsible for loading and unloading wood, manually changing the direction of wood and recovering the bark, etc., which is labor-intensive and has great safety hazards; or the wood is transported and flipped by a squirrel cage flipping method, and the traditional four-sided clamping is used to send it out for bark removal, and then the left and right clamps are opened to drop the left and right barks, which has limited usage scenarios.
[0004] The traditional wood processing production process has a complex mechanical structure and low efficiency, and the yield rate of traditional wood processing equipment is low and the cost is high. Utility Model Content
[0005] In order to overcome at least one defect of the above-mentioned prior art, the utility model provides a wood processing device, which can remove the edge bark of wood, has a high degree of automation, does not require manual assistance, improves the wood processing yield, and improves production efficiency and safety.
[0006] The technical solution adopted by the utility model to solve the problem is:
[0007] A wood processing device, comprising:
[0008] A first sawing mechanism, the first sawing mechanism saws the edge of the wood from the side;
[0009] A first edge skin separation mechanism, which is arranged at the discharge port of the first sawing mechanism and is used to separate the edge skin;
[0010] A second sawing mechanism, the second sawing mechanism saws the edge of the wood from the side;
[0011] A pushing mechanism, which is arranged at the feeding port of the second sawing mechanism and is used to push down the wood to achieve the direction change of the wood;
[0012] A second edge skin separation mechanism, which is arranged at the discharge port of the second sawing mechanism and is used to separate the edge skin;
[0013] The first sawing mechanism, the first edge skin separation mechanism, the pushing mechanism, the second sawing mechanism and the second edge skin separation mechanism are connected in sequence.
[0014] In a preferred embodiment, the first sawing mechanism includes a first sawing conveyor line and a plurality of first saw blades, which are arranged side by side; the second sawing mechanism includes a second sawing conveyor line and a plurality of second saw blades, which are arranged side by side.
[0015] In a preferred embodiment, the pushing mechanism includes a pushing member and a pushing detection member. When the pushing detection member detects the wood, the pushing member pushes the wood to achieve the reversal of the wood.
[0016] In a preferred embodiment, the first edge skin separation mechanism includes a first edge skin conveyor line, a first sawing conveyor line and a second sawing conveyor line are arranged along the same central axis, the discharge end of the first sawing conveyor line is arranged close to the feed end of the second sawing conveyor line, and the width of the feed end of the second sawing conveyor line is smaller than the width of the discharge end of the first sawing conveyor line, the width of the feed end of the second sawing conveyor line is approximately equal to the width of the wood after one edge skin sawing, and the first edge skin conveyor line is arranged below the discharge end of the first sawing conveyor line and the feed end of the second sawing conveyor line.
[0017] In a preferred embodiment, the second edge skin separation mechanism includes a second edge skin conveying line and a discharging conveying line;
[0018] The second sawing conveyor line and the discharging conveyor line are arranged along the same central axis, the discharging end of the second sawing conveyor line is arranged close to the feeding end of the discharging conveyor line, and the width of the feeding end of the discharging conveyor line is smaller than the width of the discharging end of the second sawing conveyor line, the width of the feeding end of the discharging conveyor line is roughly equal to the width of the wood after the second edge skin sawing, and the second edge skin conveyor line is arranged below the discharging end of the second sawing conveyor line and the feeding end of the discharging conveyor line.
[0019] In a preferred embodiment, the wood processing device comprises a discharging mechanism, and the discharging port of the first sawing mechanism and the discharging port of the second sawing mechanism are both provided with a discharging mechanism.
[0020] In a preferred embodiment, the discharging mechanism includes a discharging pressure wheel, and a plurality of discharging pressure wheels are rotatably arranged above the discharging port of the first sawing mechanism and above the discharging port of the second sawing mechanism.
[0021] In a preferred embodiment, the wood processing device comprises at least one centering mechanism, which is arranged at the feeding opening of the second sawing mechanism.
[0022] In a preferred embodiment, the centering mechanism includes a centering piece and a centering detection piece. The two centering pieces are symmetrically arranged on the left and right sides of the feeding end of the second sawing conveyor line. When the centering detection piece detects the wood, the two centering pieces simultaneously push the wood close to the center axis of the second sawing conveyor line.
[0023] In a preferred embodiment, the first sawing conveyor line, the first edge skin conveyor line, the second edge skin conveyor line and the discharging conveyor line are all conveyor chains or conveyor belts.
[0024] In summary, the utility model has the following technical effects:
[0025] 1. The utility model can realize the removal of wood edge bark by sequentially connecting the first sawing mechanism, the first edge bark separation mechanism, the pushing mechanism, the second sawing mechanism, and the second edge bark separation mechanism. The utility model has a high degree of automation and does not require manual assistance, thereby improving the wood processing yield, production efficiency and safety.
[0026] 2. The utility model utilizes the first sawing mechanism, the first edge skin separation mechanism, the pushing mechanism, and the second sawing mechanism to cooperate with each other. When the sawing directions of the first sawing mechanism and the second sawing mechanism remain unchanged, the edge skin of the wood in the left and right directions and the edge skin of the wood in the upper and lower directions can be sawed, thereby simplifying the mechanical structure and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;
[0028] Figure 2 It is a partial structural schematic diagram of an embodiment of the utility model;
[0029] Figure 3 This is a schematic structural diagram of the first edge skin separation mechanism of an embodiment of the utility model;
[0030] Figure 4 This is a schematic diagram of the structure of the second edge skin separation mechanism of the embodiment of the utility model;
[0031] Figure 5 It is a schematic diagram of the processing process of an embodiment of the utility model.
[0032] The meanings of the reference numerals are as follows:
[0033] 10. First sawing mechanism, 101. First sawing conveyor line, 20. Wood, 30. First edge skin separation mechanism, 301. First edge skin conveyor line, 40. Second sawing mechanism, 401. Second sawing conveyor line, 50. Pushing mechanism, 501. Pushing piece, 60. Second edge skin separation mechanism, 601. Second edge skin conveyor line, 602. Discharging conveyor line, 70. Discharging mechanism, 701. Discharging pressure wheel, 80. Centering mechanism, 801. Centering piece, 802. Centering detection piece. DETAILED DESCRIPTION
[0034] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.
[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0037] See also Figure 1-Figure 5 The utility model discloses a wood processing device, comprising: a first sawing mechanism 10, the first sawing mechanism 10 saws the edge of the wood from the side; a first edge separation mechanism 30, the first edge separation mechanism 30 is arranged at the discharge port of the first sawing mechanism 10, and the first edge separation mechanism 30 is used to separate the edge; a second sawing mechanism 40, the second sawing mechanism 40 saws the edge of the wood from the side; a pushing mechanism 50, the pushing mechanism 50 is arranged at the feed port of the second sawing mechanism 40, and the pushing mechanism 50 is used to push the wood to achieve the direction change of the wood; a second edge separation mechanism 60, the second edge separation mechanism 60 is arranged at the discharge port of the second sawing mechanism 40, and the second edge separation mechanism 60 is used to separate the edge; the first sawing mechanism 10, the first edge separation mechanism 30, the pushing mechanism 50, the second sawing mechanism 40 and the second edge separation mechanism 60 are connected in sequence.
[0038] The utility model can realize the edge bark removal of wood by sequentially connecting the first sawing mechanism 10, the first edge bark separation mechanism 30, the pushing mechanism 50, the second sawing mechanism 40, and the second edge bark separation mechanism 60. The utility model has a high degree of automation and does not require manual assistance, thereby improving the wood processing yield, production efficiency and safety.
[0039] The utility model utilizes the first sawing mechanism 10, the first edge skin separation mechanism 30, the pushing mechanism 50, and the second sawing mechanism 40 to cooperate with each other. When the sawing directions of the first sawing mechanism 10 and the second sawing mechanism 40 remain unchanged, the edge skin of the wood in the left and right directions and the edge skin of the wood in the upper and lower directions can be sawed, thereby simplifying the mechanical structure and reducing the production cost.
[0040] It can be understood that the pushing mechanism 50 is used to push down the wood so as to achieve the reversal of the wood, that is, the utility model utilizes the first sawing mechanism 10, the first edge skin separation mechanism 30, the pushing mechanism 50, and the second sawing mechanism 40 to cooperate with each other. After the left and right edge skins of the wood are sawed and separated by the first sawing mechanism 10, the wood is rotated 90 degrees around its central axis direction, and the upper and lower edge skins of the wood are rotated to its left and right directions, and are sawed and separated by the second sawing mechanism 40, thereby achieving the sawing of the left and right edge skins and the upper and lower edge skins of the wood without changing the sawing directions of the first sawing mechanism 10 and the second sawing mechanism 40, thereby simplifying the mechanical structure and reducing production costs.
[0041] In the embodiment of the utility model, the first sawing mechanism 10 includes a first sawing conveyor line 101 and a plurality of first saw blades arranged side by side; the second sawing mechanism 40 includes a second sawing conveyor line 401 and a plurality of second saw blades arranged side by side.
[0042] Preferably, the first sawing mechanism 10 includes a first sawing conveyor line 101 and two first saw blades, the two first saw blades are arranged side by side, and the two first saw blades are used to saw the left and right edges of the wood; the second sawing mechanism 40 includes a second sawing conveyor line 401 and two second saw blades, the two second saw blades are arranged side by side, and the two second saw blades are used to saw the left and right edges of the wood after switching; of course, in other embodiments, the second sawing mechanism 40 includes a second sawing conveyor line 401 and three second saw blades, the three second saw blades are arranged side by side, the two second saw blades are used to saw the left and right edges of the wood after switching, and the other second saw blade is used to square the wood after switching, that is, the wood is sawn and squared in the second sawing mechanism 40 to obtain square materials.
[0043] It should be noted that the first sawing mechanism 10 and the second sawing mechanism 40 are both existing multi-blade saw mechanisms, and how to saw edge skin, how to saw square materials and how to saw sliced materials are existing technologies and will not be repeated here.
[0044] In the embodiment of the utility model, the pushing mechanism 50 includes a pushing member 501 and a pushing detection member. When the pushing detection member detects the wood, the pushing member 501 pushes the wood to achieve the reversal of the wood.
[0045] Specifically, the knocking detection member is a push switch or a proximity switch, that is, a gravity sensor or a distance sensor is used to trigger the knocking member 501; when the push switch or the proximity switch detects that wood has passed, the knocking member 501 is triggered to push the wood down.
[0046] More specifically, the pushing member 501 includes a pushing cylinder and a pushing wheel. The pushing wheel is arranged at the output end of the pushing cylinder. When the pressing switch or the proximity switch detects that the wood passes through, the output end of the pushing cylinder is triggered to push out, and the pushing wheel pushes down the wood, thereby realizing the reversal of the wood.
[0047] Of course, in other embodiments, the push-down member 501 is driven by a motor, and the specific driving method of the push-down member 501 is determined according to actual conditions and is not limited thereto.
[0048] In an embodiment of the utility model, the first edge skin separation mechanism 30 includes a first edge skin conveyor line 301, the first sawing conveyor line 101 and the second sawing conveyor line 401 are arranged along the same central axis, the discharge end of the first sawing conveyor line 101 is arranged close to the feed end of the second sawing conveyor line 401, and the width of the feed end of the second sawing conveyor line 401 is smaller than the width of the discharge end of the first sawing conveyor line 101, the width of the feed end of the second sawing conveyor line 401 is approximately equal to the width of the wood after one edge skin sawing, and the first edge skin conveyor line 301 is arranged below the discharge end of the first sawing conveyor line 101 and the feed end of the second sawing conveyor line 401.
[0049] In an embodiment of the utility model, the second edge skin separation mechanism 60 includes a second edge skin conveyor line 601 and a discharging conveyor line 602; the second sawing conveyor line 401 and the discharging conveyor line 602 are arranged along the same central axis, the discharging end of the second sawing conveyor line 401 is arranged close to the feeding end of the discharging conveyor line 602, and the width of the feeding end of the discharging conveyor line 602 is smaller than the width of the discharging end of the second sawing conveyor line 401, the width of the feeding end of the discharging conveyor line 602 is approximately equal to the width of the wood after the second edge skin sawing, and the second edge skin conveyor line 601 is arranged below the discharging end of the second sawing conveyor line 401 and the feeding end of the discharging conveyor line 602.
[0050] It can be understood that after the wood has completed one edge sawing by the first sawing mechanism 10, the edge sawed off is still conveyed together with the wood on the first sawing conveyor line 101. In order to separate the edge bark from the wood, the utility model arranges the width of the feed end of the second sawing conveyor line 401 to be smaller than the width of the discharge end of the first sawing conveyor line 101, and the width of the feed end of the second sawing conveyor line 401 is roughly equal to the width of the wood after one edge sawing. When the edge bark cut off is conveyed from the first sawing conveyor line 101 to the second sawing conveyor line 401 together with the wood, due to the width limitation of the feed end of the second sawing conveyor line 401, the edge bark naturally falls from both sides of the feed end of the second sawing conveyor line 401 to the first edge bark conveyor line 301 located below. The first edge bark conveyor line 301 conveys the edge bark that falls on it to the recovery mechanism to prevent the edge bark cut once from entering the second sawing mechanism 40 and affecting the positioning and sawing of the wood.
[0051] Specifically, in order to allow the edge skin to fall onto the first edge skin conveyor line 301 instead of falling during transportation on the first sawing conveyor line 101, the overall width of the first sawing conveyor line 101 is greater than the diameter of the wood that has not been sawn by the edge skin, thereby facilitating the transportation of the edge skin on the first sawing conveyor line 101.
[0052] Similarly, after the wood has completed the secondary edge sawing through the second sawing mechanism 40, the secondary edge sawing is still conveyed together with the wood on the second sawing conveyor line 401. In order to separate the edge bark from the wood, the utility model arranges the width of the feed end of the discharging conveyor line 602 to be smaller than the width of the discharging end of the second sawing conveyor line 401. The width of the feed end of the discharging conveyor line 602 is roughly equal to the width of the wood after the secondary edge bark sawing. When the sawed edge bark is conveyed from the second sawing conveyor line 401 to the discharging conveyor line 602 together with the wood, due to the width limitation of the feed end of the discharging conveyor line 602, the edge bark naturally falls from both sides of the feed end of the discharging conveyor line 602 to the second edge bark conveyor line 601 located below. The second edge bark conveyor line 601 conveys the edge bark that falls on it to the recycling mechanism.
[0053] Specifically, in order to ensure that the edge skin can fall onto the second edge skin conveyor line 601 instead of falling during transportation on the second sawing conveyor line 401, the overall width of the rear section of the second sawing conveyor line 401 is greater than the diameter of the wood that has not been sawn by the edge skin, thereby facilitating the transportation of the edge skin on the second sawing conveyor line 401. The feeding end of the second sawing conveyor line 401 is located at the front section of the second sawing conveyor line 401.
[0054] More specifically, see Figure 5Assuming that the wood is a round log, the diameter of the wood before the edge sawing is 2a, the width of the wood after the first edge sawing is b, and the width of the wood after the second edge sawing is also b; preferably, The wood yield is c, Thus, c=0.64, the yield rate of conventional wood processing equipment is relatively low, the yield rate of conventional wood processing equipment is only 50% or lower than 50%, and the utility model improves the yield rate of wood processing.
[0055] In the embodiment of the utility model, the wood processing device comprises a discharging mechanism 70 , and the discharging port of the first sawing mechanism 10 and the discharging port of the second sawing mechanism 40 are both provided with the discharging mechanism 70 .
[0056] In the embodiment of the utility model, the discharge mechanism 70 includes a discharge pressure wheel 701 , and a plurality of discharge pressure wheels 701 are rotatably arranged above the discharge port of the first sawing mechanism 10 and above the discharge port of the second sawing mechanism 40 .
[0057] In this way, when the discharging pressing wheel 701 presses the wood, and the discharging pressing wheel 701 assists in conveying the wood forward, the wood is prevented from falling with the side bark when the side bark is separated from the wood.
[0058] In the embodiment of the utility model, the wood processing device comprises at least one centering mechanism 80 , and the centering mechanism 80 is arranged at the feeding port position of the second sawing mechanism 40 .
[0059] In an embodiment of the utility model, the centering mechanism 80 includes a centering piece 801 and a centering detection piece 802. The two centering pieces 801 are symmetrically arranged on the left and right sides of the feeding end of the second sawing conveyor line 401. When the centering detection piece 802 detects the wood, the two centering pieces 801 simultaneously push the wood close to the central axis of the second sawing conveyor line 401.
[0060] Specifically, the centering detection member 802 is a push switch or a proximity switch, that is, the centering member 801 is triggered by a gravity sensor or a distance sensor; when the push switch or the proximity switch detects that the wood passes through, the centering member 801 is triggered to push the wood close to the central axis of the second sawing conveyor line 401.
[0061] More specifically, the centering member 801 includes a centering motor, a centering rocker and a centering wheel. The centering wheel is arranged at one end of the centering rocker, and the output end of the centering motor is arranged at the other end of the centering rocker. When the pressing switch or the proximity switch detects that the wood passes through, the output end of the centering motor is triggered to rotate, and the centering rocker swings to push the wood close to the central axis of the second sawing conveyor line 401, thereby achieving the centering of the wood; the centering setting of the wood is beneficial to the subsequent sawing accuracy of the wood. In this way, two or three centering mechanisms 80 can be set to center the wood, thereby improving the sawing accuracy. The number of centering mechanisms 80 can be determined according to the length of the feeding end of the second sawing conveyor line 401.
[0062] Of course, in other embodiments, the centering member 801 is driven by a cylinder, and the cylinder directly pushes the wood close to the central axis of the second sawing conveyor line 401 through the centering wheel. The specific driving method of the knocking member 501 depends on the actual situation and is not limited to this.
[0063] In the embodiment of the present utility model, the first sawing conveyor line 101, the first edge skin conveyor line 301, the second edge skin conveyor line 601 and the discharging conveyor line 602 are all conveyor chains or conveyor belts.
[0064] Preferably, the first sawing conveyor line 101, the first edge skin conveyor line 301, the second edge skin conveyor line 601 and the discharging conveyor line 602 are all conveyor chains to facilitate the transportation of wood and edge skin.
[0065] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.
Claims
1. A wood processing device, characterized in that: include: a first sawing mechanism, wherein the first sawing mechanism saws the edge of the wood from the side; A first edge skin separation mechanism, which is arranged at a material discharge port of the first sawing mechanism and is used for separating edge skin; a second sawing mechanism, wherein the second sawing mechanism saws the edge of the wood from the side; A pushing mechanism, which is arranged at the feeding port of the second sawing mechanism and is used to push down the wood to achieve the direction change of the wood; A second edge skin separation mechanism, the second edge skin separation mechanism is arranged at the discharge port of the second sawing mechanism, and the second edge skin separation mechanism is used to separate the edge skin; The first sawing mechanism, the first edge skin separation mechanism, the pushing mechanism, the second sawing mechanism and the second edge skin separation mechanism are connected in sequence.
2. The wood processing device according to claim 1, characterized in that: The first sawing mechanism includes a first sawing conveyor line and a plurality of first saw blades, and the plurality of first saw blades are arranged side by side; the second sawing mechanism includes a second sawing conveyor line and a plurality of second saw blades, and the plurality of second saw blades are arranged side by side.
3. The wood processing device according to claim 1, characterized in that: The pushing mechanism comprises a pushing piece and a pushing detection piece. When the pushing detection piece detects the wood, the pushing piece pushes the wood to achieve the direction change of the wood.
4. The wood processing device according to claim 2, characterized in that: The first edge skin separation mechanism includes a first edge skin conveyor line, the first sawing conveyor line and the second sawing conveyor line are arranged along the same central axis, the discharge end of the first sawing conveyor line is arranged close to the feed end of the second sawing conveyor line, and the width of the feed end of the second sawing conveyor line is smaller than the width of the discharge end of the first sawing conveyor line, the width of the feed end of the second sawing conveyor line is approximately equal to the width of the wood after one edge skin sawing, and the first edge skin conveyor line is arranged below the discharge end of the first sawing conveyor line and the feed end of the second sawing conveyor line.
5. The wood processing device according to claim 4, characterized in that: The second edge skin separation mechanism includes a second edge skin conveying line and a discharging conveying line; The second sawing conveyor line and the discharging conveyor line are arranged along the same central axis, the discharging end of the second sawing conveyor line is arranged close to the feeding end of the discharging conveyor line, and the width of the feeding end of the discharging conveyor line is smaller than the width of the discharging end of the second sawing conveyor line, the width of the feeding end of the discharging conveyor line is roughly equal to the width of the wood after the second edge skin sawing, and the second edge skin conveyor line is arranged below the discharging end of the second sawing conveyor line and the feeding end of the discharging conveyor line.
6. The wood processing device according to claim 1, characterized in that: It comprises a discharging mechanism, and the discharging port of the first sawing mechanism and the discharging port of the second sawing mechanism are both provided with the discharging mechanism.
7. The wood processing device according to claim 6, characterized in that: The discharging mechanism comprises a discharging pressure wheel, and a plurality of the discharging pressure wheels are rotatably arranged above the discharging port of the first sawing mechanism and above the discharging port of the second sawing mechanism.
8. The wood processing device according to claim 2, characterized in that: It comprises at least one centering mechanism, and the centering mechanism is arranged at the feeding port position of the second sawing mechanism.
9. The wood processing device according to claim 8, characterized in that: The centering mechanism includes a centering piece and a centering detection piece. The two centering pieces are symmetrically arranged on the left and right sides of the feeding end of the second sawing conveyor line. When the centering detection piece detects the wood, the two centering pieces simultaneously push the wood close to the central axis of the second sawing conveyor line.
10. The wood processing device according to claim 5, characterized in that: The first sawing conveyor line, the first edge skin conveyor line, the second edge skin conveyor line and the discharging conveyor line are all conveyor chains or conveyor belts.
