Ring type long wood flaking machine

Abstract

The invention discloses a ring type long wood flaking machine. The device comprises a leaf chain conveyor, a transition frame and a cutting chamber, a heavy pressure device is arranged at the top of the transition frame, a side pressure device is arranged beside the transition frame, the heavy pressure device comprises a heavy pressure driving mechanism and a side pressure driving mechanism which is connected with the heavy pressure driving mechanism and extends into the transition frame, and the side pressure device comprises a side pressure driving mechanism and a side pressure assembly which is driven by the side pressure driving mechanism and can move in the radial direction relative to the rotary cutter ring; through movement of the side pressing assembly, logs can be stacked to the cutting position of the rotary cutter ring, and then the raw materials are pressed through the heavy pressing component. The device has the advantages that the special effect of stacking and compacting logs is achieved, raw materials are not moved in the cutting process, and the wood shavings are good in shape. The raw materials in the cutting chamber are ensured to be completely cut, meanwhile, the safety of equipment is ensured, the cutting time is effectively shortened, the whole cutting period is also correspondingly shortened, the productivity is increased, and the cost performance of the equipment is improved.

Description

Technical Field

[0001] The invention relates to a wood chipping device in the industrial production of particleboards, in particular to a ring-type long material chipping machine. Background Art

[0002] The ring-type long-timber flaker is a shaving equipment used in the industrial production of particleboards. The raw materials enter the cutting chamber of the long-timber flaker through the feeding system. The slide moves forward and the raw materials are sliced ​​into shavings by the flying knives installed on the high-speed rotating knife ring, and the shavings are discharged from the lower part of the slide. When cutting small-diameter wood, branch wood, wood core and other materials, the traditional ring-type long-timber flaker adopts a plate chain conveyor for feeding. The logs are placed on the plate chain conveyor and enter the cutting chamber. Under the combined action of lateral pressure and heavy pressure, the raw materials are pressed tightly, the slide moves forward, and the logs in the cutting chamber are sliced ​​into shavings by the flying knives installed on the knife ring.

[0003] Among them, the existing ring-type long material flaking machine has a side pressure device including a side pressure arm fixedly installed on the transition frame, a side pressure component arranged on the side pressure arm, and an aluminum block installed on the front end surface of the side pressure component to ensure the safe operation of the knife ring (the aluminum block can be cut by the knife ring in a small amount). When in use, the long material is pressed and positioned by the heavy pressure of the downward pressure device and the side pressure of the side pressure device. At this time, the flying knife installed on the high-speed rotating knife ring is shaved into shavings by driving the lateral movement of the cutting chamber through the slide. This traditional structure usually has the following problems: (1) The side pressure component is fixed. At the same time, due to the feeding of the plate conveyor, it cannot play a material sorting role and the filling rate is not high. When the heavy pressure is pressed down, some raw materials are only pressed by the heavy pressure but not touched by the side pressure, resulting in the side pressure failing to play a role and the side pressure component being useless; (2) Since the side pressure component is fixed and the cutting stroke of the knife ring is fixed each time, in the material-free area, it will cause a waste of cutting time and increase energy consumption; (3) The side pressure arm of the side pressure device is installed on the transition frame, which is inconvenient for equipment maintenance. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a ring-type long material chipper which can not only ensure that the raw material does not move during the cutting process and the shavings have a good shape, but also effectively shorten the cutting time, increase the production capacity, and is easy to maintain.

[0005] In order to solve the above technical problems, the ring-type long material chipper of the present invention includes a plate chain conveyor for conveying logs, a transition frame connected to the plate chain conveyor, and a cutting chamber connected to the transition frame and driven by a slide, the cutting chamber can move laterally relative to the feeding direction driven by the slide so that the rotating knife ring can perform chipping operations on the logs entering the cutting chamber; a weight pressure device is provided on the top of the transition frame, and a side pressure device is provided on the side of the transition frame, the weight pressure device includes a weight pressure drive mechanism and a weight pressure component connected to the weight pressure drive mechanism and extending into the transition frame to press down the logs entering the cutting chamber through the transition frame, the side pressure device includes a side pressure drive mechanism and a side pressure component driven by the side pressure drive mechanism and capable of radially moving relative to the rotating knife ring, the logs can be piled up at the cutting position of the rotating knife ring through the movement of the side pressure component and the raw materials can be pressed by the weight pressure component.

[0006] The side pressure driving mechanism is provided with a pressure sensor for detecting the magnitude of the pushing pressure, and the forward stroke of the side pressure assembly is controlled by the magnitude of the pushing pressure detected by the pressure sensor.

[0007] The side pressure driving mechanism is a hydraulic cylinder, and the pressure sensor is installed on the hydraulic pipeline of the hydraulic cylinder.

[0008] A safety valve is arranged on the hydraulic system of the hydraulic cylinder.

[0009] The side pressure driving mechanism is provided with a displacement sensor for detecting the moving position of the side pressure assembly, and the slide seat can travel a required distance according to the position of the side pressure assembly.

[0010] The side pressure assembly comprises a sliding connection seat and a side pressure block installed at the front end of the sliding connection seat, and an aluminum block extending into the cutting chamber is installed on the front end surface of the side pressure block.

[0011] The aluminum block is an arc-shaped structure protruding in the material pushing direction.

[0012] The side pressure device also includes a fixed seat, the sliding connection seat is located above the fixed seat and the side pressure driving mechanism is connected between the fixed seat and the sliding connection seat.

[0013] A side plate is provided on the top of the fixed seat, and two pairs of positioning sleeves are installed on the side plate. A guide shaft is installed between each pair of positioning sleeves. At least one pair of sliding sleeves is fixedly installed on the bottom of the sliding connection seat, and each pair of sliding sleeves is respectively installed on one of the guide shafts.

[0014] A wood chipping method of the ring-type long material chipping machine as described above comprises the following steps: A. Place the logs on the plate chain conveyor, and the logs enter the cutting chamber after passing through the transition rack; B. First, the side pressure driving mechanism of the side pressure device drives the side pressure assembly to move, so that the side pressure block moves radially relative to the rotating knife ring in the cutting chamber to pile up the logs, and then the heavy pressure driving mechanism of the heavy pressure device drives the heavy pressure component to press down to compact the logs entering the cutting chamber; C. The logs in the cutting chamber are cut into shavings by the flying knives installed on the rotating knife ring, and the shavings are discharged from the lower part of the slide; D. D. As the number of logs being shavings gradually decreases, the forward pressure of the side pressure drive mechanism is detected by the pressure sensor, and the movement is stopped when the pressure setting value is reached, thereby controlling the forward stroke of the side pressure block. During this process, the forward distance of the side pressure block is obtained by the displacement sensor, and the slide moves a corresponding distance according to the position of the side pressure assembly. As a result, the side pressure assembly advances a different distance each time according to the number of logs in the cutting chamber, and the cutting stroke of the knife ring changes accordingly.

[0015] The advantages of the present invention are: (1) A side pressure assembly driven by a side pressure driving mechanism can move radially relative to the rotating knife ring in the cutting chamber. The side pressure blocks in the side pressure assembly can be moved to stack the logs toward the cutting position of the rotating knife ring, and then the heavy pressure components can compact the raw materials. This ingenious structural design achieves the special effect of compacting the logs, ensuring that the raw materials do not move during the cutting process and that the shavings have a good shape.

[0016] (2) The pressure sensor can detect the pushing pressure of the side pressure device and thus control the forward stroke of the side pressure component. A displacement sensor for detecting the moving distance of the side pressure is provided on the side pressure driving mechanism. The slide can move the required distance according to the position of the side pressure block, thereby keeping the logs in a tightly compacted state at all times, ensuring that the raw materials in the cutting chamber are completely cut while ensuring the safety of the equipment. In particular, the side pressure device can make the side pressure driving mechanism advance a different distance each time according to the raw material conditions in the cutting chamber, and the cutting stroke of the knife ring changes accordingly, effectively shortening the cutting time. The entire cutting cycle is also shortened accordingly, increasing production capacity and improving the cost performance of the equipment, thereby solving the problem that the side pressure components are traditionally fixed and the cutting stroke of the knife ring is fixed each time, which causes waste of cutting time and increased energy consumption in the material-free area.

[0017] (3) A safety valve is installed on the hydraulic system of the hydraulic cylinder to ensure that the side pressure assembly does not move when stationary, thus ensuring the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the ring-type long material flaker of the present invention; Figure 2 It is a schematic side view of the structure of the ring-type long material flaker of the present invention; Figure 3 It is a schematic diagram of the front view structure of the side pressure device in the present invention; Figure 4 It is a side view structural schematic diagram of the side pressure device in the present invention; Figure 5 It is a schematic diagram of the top view of the side pressure device in the present invention. DETAILED DESCRIPTION

[0019] The ring-type long material flaker of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Example

[0020] The existing ring-type long material flaker includes a plate chain conveyor 2 for conveying logs 1, a transition frame 3 connected to the plate chain conveyor, and a cutting chamber 5 connected to the transition chamber and driven by a slide 4 (the cutting chamber is installed on the slide), and the cutting chamber 5 can move laterally relative to the feeding direction under the drive of the slide so that the logs entering the cutting chamber are shaving by a rotating knife ring 6 (the rotating knife ring is installed on the slide, the rotating knife ring moves, and the cutting chamber moves synchronously with the rotating knife ring). This is the structure and principle of a conventional long material flaker, which will not be described in detail in this embodiment. The present invention is based on the improvement of the above-mentioned ring-type long material flaker. As shown in the figure, the present invention is provided with a weight pressing device 7 on the top of the transition frame 3. A side pressure device 8 is arranged on the side of the transition frame 3, and the heavy pressure device 7 includes a heavy pressure driving mechanism 9 and a heavy pressure component 10 connected to the heavy pressure driving mechanism and extending into the transition chamber. The heavy pressure driving mechanism drives the heavy pressure component 10 to move downward, so that the logs entering the cutting chamber through the transition frame can be pressed down. The side pressure device 5 includes a fixed seat 17 fixedly installed on the side of the transition frame 3, a side pressure driving mechanism 11 as a power execution unit, and a side pressure component 12 driven by the side pressure driving mechanism and capable of radial movement relative to the rotating knife ring. The side pressure component 12 includes a sliding connection seat 14 located above the fixed seat and a side pressure block 15 installed at the front end of the sliding connection seat 14. The front end surface of the side pressure block 15 ( Figure 5 The left side shown is defined as the back end, Figure 5The right side is defined as the front end as shown in the figure, and an aluminum block 16 extending into the cutting chamber is installed on it (the aluminum block 16 is installed on one side of the side pressure block 15 and just extends into the cutting chamber), and the aluminum block 16 is an arc-shaped structure protruding in the direction of pushing the material; the sliding connection seat 14 is located above the fixed seat 17, the fixed end of the side pressure drive mechanism 11 is connected to the fixed seat, and the power execution end of the side pressure drive mechanism 11 is connected to the sliding connection seat, so that the sliding connection seat can be driven to move back and forth, thereby, under the drive of the side pressure drive mechanism 11, the side pressure block 15 can drive the aluminum block 16 to rotate relative to the cutter in the cutting chamber. The ring moves radially, and the side pressure block 15 drives the aluminum block 16 to move, so that the logs can be piled up toward the cutting position of the rotating knife ring, and then the heavy pressure component 10 presses the raw materials. In this embodiment, the side pressure driving mechanism 11 is a hydraulic cylinder, and the hydraulic cylinder must have a corresponding hydraulic system. The telescopic rod of the hydraulic cylinder serves as the power execution end, and a pressure sensor 13 is installed on the hydraulic pipeline of the hydraulic cylinder. The pressure sensor 13 can detect the size of the pushing pressure (the size of the pushing pressure is equivalent to knowing the number of logs in the cutting chamber) and then control the forward stroke of the side pressure component.

[0021] Furthermore, the side pressure driving mechanism 11 is provided with a displacement sensor for detecting the moving position of the side pressure block. In the present embodiment, the displacement sensor is a displacement sensor built into the hydraulic cylinder. The position of the aluminum block can be accurately known by detecting the telescopic length of the telescopic rod through the displacement sensor. The precise control of the operation of the equipment is increased by the displacement sensor. The slide 4 can travel the required distance according to the position of the aluminum block to ensure that the raw material in the cutting chamber is completely cut, thereby ensuring the safety and stability of the operation of the equipment. At the same time, the hydraulic system of the hydraulic cylinder is provided with a safety valve to ensure that the side pressure is not displaced in a static state, thereby further ensuring the safety of the equipment.

[0022] Furthermore, in order to further improve the operational reliability, two side plates 18 may be provided on the top of the fixed seat 17, and a pair of positioning sleeves 19 are respectively installed on the two side plates 18, and a guide shaft 20 is installed between each pair of positioning sleeves 19. At least one pair of sliding sleeves 21 is fixedly installed at the bottom of the sliding connection seat 14 (when there is only one pair of sliding sleeves, one of them is sleeved on the guide shaft ( Figure 5 shown above), and the other is mounted on another guide shaft ( Figure 5 As shown below), the sliding connection seat 14 can be guided to ensure the accuracy of the action. Example

[0023] The wood chipping method of the ring-type long material chipping machine of this embodiment comprises the following steps: A. Place the log 1 on the plate chain conveyor 2, and the log passes through the transition frame 3 and enters the cutting chamber 5; B. First, the side pressure driving mechanism 11 of the side pressure device 8 drives the side pressure assembly 12 to move, so that the side pressure block 15 moves radially relative to the rotating knife ring in the cutting chamber to pile up the logs, and then the heavy pressure driving mechanism of the heavy pressure device 7 drives the heavy pressure component 10 to press down to compact the logs entering the cutting chamber 5; C. The logs in the cutting chamber 5 are cut into shavings by the flying cutters mounted on the rotating cutter ring 6, and the shavings are discharged from the lower part of the slide seat; D. As the number of logs 1 after being shavings gradually decreases, the forward pressure of the side pressure driving mechanism 11 is detected by the pressure sensor 13. When the pressure setting value of the hydraulic system is reached, the side pressure component stops moving (i.e., no longer moves forward), thereby controlling the forward stroke of the side pressure block 15 (i.e., the stroke of the aluminum block); in this process, the moving distance of the side pressure block 15 is obtained through the displacement sensor, and the signal of the displacement sensor and the control signal of the slide are controlled by the PLC control system or the single-chip microcomputer (collectively referred to as the control unit). Therefore, when the control unit obtains the signal of the displacement sensor and sends a corresponding control instruction (moving distance) to the slide after calculation, the slide 4 then moves a corresponding distance according to the position of the side pressure component, thereby making the side pressure component move forward a different distance each time according to the number of logs in the cutting chamber, and the cutting stroke of the rotating knife ring changes accordingly.

[0024] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A ring-type long-wood flaker, comprising a plate chain conveyor (2) for conveying logs (1), a transition frame (3) connected to the plate chain conveyor, and a cutting chamber (5) connected to the transition frame and driven by a slide seat (4), wherein the cutting chamber (5) can move laterally relative to a feeding direction under the drive of the slide seat so that a rotating knife ring (6) can perform a shaving operation on the logs entering the cutting chamber; characterized in that: A weight pressing device (7) is arranged on the top of the transition frame (3), and a side pressing device (8) is arranged on the side of the transition frame (3). The weight pressing device (7) comprises a weight pressing drive mechanism (9) and a weight pressing component (10) connected to the weight pressing drive mechanism and extending into the transition frame to press down the logs entering the cutting chamber through the transition frame. The side pressing device (8) comprises a side pressing drive mechanism (11) and a side pressing component (12) driven by the side pressing drive mechanism and capable of radial movement relative to the rotating knife ring. The movement of the side pressing component (12) can cause the logs to accumulate at the cutting position of the rotating knife ring, and the weight pressing component (10) can then press the raw materials.

2. The ring-type long material flaker according to claim 1, characterized in that: The side pressure driving mechanism (11) is provided with a pressure sensor (13) for detecting the magnitude of the pushing pressure, and the forward stroke of the side pressure component is controlled by the magnitude of the pushing pressure detected by the pressure sensor (13).

3. The ring-type long material flaker according to claim 2, characterized in that: The side pressure driving mechanism (11) is a hydraulic cylinder, and the pressure sensor (13) is installed on the hydraulic pipeline of the hydraulic cylinder.

4. The ring-type long material flaker according to claim 3, characterized in that: A safety valve is arranged on the hydraulic system of the hydraulic cylinder.

5. The ring-type long material flaker according to claim 1, 2, 3 or 4, characterized in that: The side pressure driving mechanism (11) is provided with a displacement sensor for detecting the moving position of the side pressure component, and the slide seat (4) can travel a required distance according to the position of the side pressure component.

6. The ring-type long-timber flaker according to claim 1, 2, 3 or 5, characterized in that: The side pressure assembly (12) comprises a sliding connection seat (14) and a side pressure block (15) mounted at the front end of the sliding connection seat (14); an aluminum block (16) extending into the cutting chamber is mounted on the front end surface of the side pressure block (15).

7. The ring-type long material flaker according to claim 6, characterized in that: The aluminum block (16) is an arc-shaped structure that bulges in the material pushing direction.

8. The ring-type long material flaker according to claim 7, characterized in that: The side pressure device (8) further comprises a fixed seat (17), the sliding connection seat (14) is located above the fixed seat (17) and the side pressure drive mechanism (11) is connected between the fixed seat and the sliding connection seat.

9. The ring-type long material flaker according to claim 8, characterized in that: A side plate (18) is arranged on the top of the fixed seat (17), two pairs of positioning sleeves (19) are installed on the side plate (18), a guide shaft (20) is installed between each pair of the positioning sleeves (19), and at least one pair of sliding sleeves (21) is fixedly installed on the bottom of the sliding connection seat (14), each pair of the sliding sleeves (21) is respectively installed on one of the guide shafts.

10. A wood chipping method for a ring-type long-wood flaker according to any one of claims 1 to 9, characterized in that: The following steps are involved: A. placing logs (1) on a plate chain conveyor (2), and the logs pass through a transition frame (3) and enter a cutting chamber (5); B. First, the side pressure driving mechanism (11) of the side pressure device (8) drives the side pressure assembly (12) to move, so that the side pressure block (15) moves radially relative to the rotating knife ring in the cutting chamber to pile up the logs, and then the heavy pressure driving mechanism of the heavy pressure device (7) drives the heavy pressure component (10) to press down to compact the logs entering the cutting chamber (5); C. The logs in the cutting chamber (5) are cut into shavings by the flying knives mounted on the rotating knife ring (6), and the shavings are discharged from the lower part of the slide seat; D. As the number of logs (1) being shavings decreases, the pressure sensor (13) detects the forward pressure of the side pressure driving mechanism (11). When the pressure reaches the set value, the movement stops, thereby controlling the forward stroke of the side pressure block (15). During this process, the forward distance of the side pressure block (15) is obtained through the displacement sensor, and the slide (4) moves a corresponding distance according to the position of the side pressure assembly. As a result, the side pressure assembly moves a different distance each time according to the number of logs in the cutting chamber, and the cutting stroke of the knife ring changes accordingly.

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