A wood chip feeding mechanism

Abstract

This application discloses a wood chip feeding mechanism, including a support frame, a feeding bin, a pushing component, a feeding component, and a blowing system. The feeding bin is mounted on the support frame and is open at both ends. Multiple clamping protrusions on the same plane are provided on the lower ends of the inner walls of its four sides. The pushing component is located directly above the feeding bin and is used to press down on the wood chips to disengage them from the clamping protrusions. The feeding component is spaced below the feeding bin and includes a receiving frame and two tensioning motors. Clamping protrusions are located at the center of the four inner sides of the receiving frame, with their height lower than the height of the clamping protrusions. The tensioning motors are symmetrically located on the outer sides of the opposite side plates of the feeding bin and are used to pull the receiving frame upwards so that the wood chips abut against the lower ends of the clamping protrusions. The blowing system is located at the interval between the feeding bin and the feeding component and sprays airflow onto the upper and lower surfaces of the wood chips to remove dust. An unbalanced clamping force is created by the height difference between the clamping protrusions and the clamping protrusions, causing the abutted wood chips to fall automatically under gravity, achieving efficient feeding and simultaneous cleaning.

Description

Technical Field

[0001] This application relates to the field of wood production technology, and more specifically, to a wood chip feeding mechanism. Background Technology

[0002] In the wood production process, the production of laminated boards is particularly crucial, requiring meticulous arrangement of various raw materials according to a predetermined sequence. However, in practice, this step faces numerous challenges. First, the wood chips used are generally thin and often exhibit some degree of warping, making the loading process exceptionally difficult and demanding high levels of skill and patience from operators. Second, the environment within the production workshop is also challenging, with high dust concentrations floating in the air and easily adhering to the surface of the wood chips. Furthermore, the rough and uneven surface of the wood chips makes them even more prone to trapping dust and dirt. The combined effect of these factors not only increases the difficulty of loading and arranging but also negatively impacts subsequent processing, potentially leading to decreased product quality or even production interruptions, severely affecting the efficiency of the entire production line and the final product quality. Therefore, a new type of wood chip loading mechanism is urgently needed to address these shortcomings. Utility Model Content

[0003] This application provides a wood chip feeding mechanism, including a support, a feeding bin, a pushing assembly, a feeding assembly, and a blowing system. The feeding bin is mounted on the support and is open at both ends. The lower ends of the four inner walls of the feeding bin have multiple retaining protrusions on the same plane. The pushing assembly is located directly above the feeding bin and is used to press the wood chips downwards to disengage them from the retaining protrusions. The feeding assembly is spaced below the feeding bin and includes a receiving frame and a stretching motor. The four inner sides of the receiving frame have retaining protrusions on the same plane, and the height of the retaining protrusions is lower than the height of the retaining protrusions. The stretching motor is symmetrically arranged on the outer sides of two opposite side plates of the feeding bin. The two ends of the stretching motor are respectively fixed to the side plates of the feeding bin and the side of the receiving frame, and are used to pull the receiving frame upwards so that the wood chips abut against the lower ends of the retaining protrusions. The blowing system is located in the space between the feeding bin and the feeding assembly and is used to spray airflow onto the upper and lower surfaces of the wood chips to remove dust. The height difference between the holding protrusion and the holding protrusion creates an unbalanced holding force, causing the wooden piece to fall automatically under the influence of gravity after contact.

[0004] In some embodiments, the number of the retaining protrusions is less than the number of the retaining protrusions.

[0005] In some embodiments, three retaining protrusions are evenly spaced on the inner side of each feed hopper, and a retaining protrusion is provided at the center of the inner side of each receiving frame.

[0006] In some embodiments, the height of the retaining protrusion is 40%-60% of the height of the retaining protrusion.

[0007] In some embodiments, the retaining protrusion is made of hemispherical elastic rubber material, with a protrusion height of 0.5-1.2 mm.

[0008] In some embodiments, the feed hopper is provided with a flip-up side plate on one side, and the flipping shaft is located at the edge of the side plate.

[0009] In some embodiments, the stretching motor is a servo electric cylinder, the cylinder body of which is fixed to the side plate of the feed hopper via a mounting plate, and the piston rod is connected to the receiving frame via the mounting plate.

[0010] In some embodiments, the feeding mechanism further includes a control module, which is configured to:

[0011] - When the push plate is pressed down to its limit position, the blowing system is triggered to start;

[0012] - After the wooden piece abuts the retaining protrusion, delay for 0.2-0.5 seconds to control the tension motor to release the receiving frame.

[0013] The feeding mechanism of this application utilizes the height difference between the holding protrusions and the holding points to create an unbalanced holding force, enabling automatic falling of wood chips and solving the problem of low efficiency in manual feeding. The blowing system simultaneously cleans dust from the upper and lower surfaces during the falling wood chips, overcoming quality defects caused by dirt accumulation on the rough surfaces of the wood chips. The linkage design between the stretching motor and the receiving frame ensures precise lifting and positioning of the wood chips. The overall mechanism has a high degree of automation, significantly improving the layout accuracy and product yield in laminate production.

[0014] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0017] Explanation of main component symbols: feeding mechanism 100, bracket 10, feeding bin 20, clamping protrusion 21, propulsion assembly 30, propulsion motor 31, propulsion plate 32, feeding assembly 40, receiving frame 41, clamping protrusion 411, stretching motor 42, blowing system 50. Detailed Implementation

[0018] The embodiments of this application will be further described below with reference to the accompanying drawings. The same or similar reference numerals in the drawings denote the same or similar elements or elements having the same or similar functions throughout.

[0019] Furthermore, the embodiments of this application described below in conjunction with the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting this application.

[0020] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] Please see Figure 1 This application provides a wood chip feeding mechanism 100, including a support 10, a feeding bin 20, a pushing assembly 30, a feeding assembly 40, and a blowing system 50. The feeding bin 20 is mounted on the support 10 and is open at both ends. Multiple retaining protrusions 21 located on the same plane are provided at the lower ends of the four inner walls of the feeding bin 20. The pushing assembly 30 is located directly above the feeding bin 20 and is used to press the wood chips downwards to disengage them from the retaining protrusions 21. The feeding assembly 40 is spaced apart below the feeding bin 20 and includes a receiving frame 41 and a stretching motor 42. The four inner sides of the receiving frame 41 are provided with retaining protrusions 411 located on the same plane, and the height of the retaining protrusions 411 is lower than the height of the retaining protrusions 21. The tension motors 42 are symmetrically arranged on the outer sides of two opposite side plates of the feeding bin 20. The two ends of the tension motors 42 are fixed to the side plates of the feeding bin 20 and the side of the receiving frame 41, respectively, and are used to pull the receiving frame 41 upwards so that the wood chip abuts against the lower end of the holding protrusion 21. The blowing system 50 is located in the interval area between the feeding bin 20 and the feeding assembly 40, and is used to spray airflow onto the upper and lower surfaces of the wood chip to remove dust. The height difference between the holding protrusion 411 and the holding protrusion 21 creates an unbalanced holding force, causing the abutted wood chip to fall automatically under gravity.

[0022] The feeding mechanism 100 of this application utilizes the height difference between the holding protrusion 21 and the holding protrusion 411 to create an unbalanced holding force, enabling automatic falling of wood chips and solving the problem of low efficiency in manual feeding. The blowing system 50 simultaneously cleans dust from the upper and lower surfaces during the wood chip falling interval, overcoming quality defects caused by dirt accumulation on the rough surface of the wood chips. The linkage design between the stretching motor 42 and the receiving frame 41 ensures precise lifting and positioning of the wood chips. The overall mechanism has a high degree of automation, significantly improving the layout accuracy and product yield in laminate production.

[0023] For details, please continue reading Figure 1 The feeding mechanism 100 includes a support 10 and a feeding bin 20, a propulsion assembly 30 and a feeding assembly 40 mounted on the support 10.

[0024] The feeding hopper 20 has a rectangular structure and is open at both the top and bottom. One side panel can be flipped to facilitate the placement of wood chips. Multiple retaining protrusions 21 are provided at the lower ends of the four inner walls of the feeding hopper 20, and the multiple retaining protrusions 21 are located on the same plane.

[0025] The feeding hopper 20 has a rectangular structure with an open top and bottom. One side panel of the feeding hopper 20 is designed to flip, facilitating the placement and adjustment of wood chips. The lower part of the inner walls of the four sides of the feeding hopper 20 has multiple retaining protrusions 21, made of hemispherical elastic rubber. These retaining protrusions 21 are located on the same horizontal plane and are used to securely hold the wood chips within the feeding hopper 20, ensuring that the wood chips do not fall or shift during feeding. One side of the feeding hopper 20 has a flip-up side panel, specifically the side panel facing directly in the diagram, with the flipping axis located at the edge of the side panel.

[0026] The propulsion assembly 30 is located directly above the feed hopper 20 and is used to apply downward thrust, allowing the wood chips to overcome obstruction and fall downwards. Various propulsion methods can be employed, such as screw propulsion or hydraulic propulsion. In the embodiment of this application, the propulsion assembly 30 includes a propulsion motor 31 and a propulsion plate 32, with the propulsion plate 32 mounted on the output shaft of the propulsion motor 31. When the propulsion motor 31 starts and rotates downwards, it drives the propulsion plate 32 downwards, thereby applying downward compressive force to the wood chips, ensuring that the wood chips can smoothly pass through the feed hopper 20 and enter the next processing stage.

[0027] The feeding assembly 40 is spaced out directly below the feeding bin 20 to receive the wood chips falling from the feeding bin 20. The feeding assembly 40 includes a receiving frame 41 and a stretching motor 42. The receiving frame 41 matches the feeding bin 20 and also has a cuboid structure. Each of the four inner sides of the receiving frame 41 is provided with a retaining protrusion 411. Specifically, a retaining protrusion 411 is provided at the center of each side. The height of the retaining protrusion 411 is 40%-60% of the height of the retaining protrusion 21. In a preferred embodiment of this application, the height of the retaining protrusion 411 is located at half of the retaining protrusion 21. The retaining protrusion 411 is made of hemispherical elastic rubber material, and the protrusion height is 0.5-1.2 mm.

[0028] Two tensioning motors 42 are symmetrically arranged on the outer sides of opposite side plates of the feed hopper 20. Each tensioning motor 42 is a servo electric cylinder and is vertically mounted. One end of each tensioning motor 42 is fixed to the side plate of the feed hopper 20 via a mounting plate 22, and the other end is fixed to the side of the receiving frame 41 via the mounting plate 22. When the tensioning motor 42 retracts, it pulls the receiving frame 41 upwards, causing the wood chip to move upwards and abut against the lower end of the holding protrusion 21. Due to the greater height of the holding protrusion 21 than the height of the holding protrusion 411 and the greater number of holding protrusions 411, the holding force of the holding protrusion 411 is less than that of the holding protrusion 411, causing the wood chip to fall downwards.

[0029] Two tension motors 42 are symmetrically arranged on the outer sides of opposite side panels of the feed hopper 20 to ensure structural balance and operational stability. The tension motors 42 are vertically mounted, with one end securely fixed to the side panel of the feed hopper 20 via a special mounting plate 22, and the other end also securely connected to the side of the receiving frame 41 via the mounting plate 22. When the tension motors 42 start and retract, they generate an upward pulling force, causing the receiving frame 41 to move upwards, which in turn causes the wood pieces placed in the receiving frame 41 to move upwards until the upper end of the wood pieces abuts the lower end of the retaining protrusion 21.

[0030] Due to its ingenious design, the height of the retaining protrusion 21 is significantly higher than the height of the retaining protrusion 411, and the number of retaining protrusions 411 is also relatively large. This difference in height and number results in a relatively small retaining force for the retaining protrusions 411, while the retaining force for the retaining protrusions 411 is relatively large. Because of this difference in retaining force, when the wood chip is moved upwards by the stretching motor 42 and comes into contact with the lower end of the retaining protrusion 21, the wood chip cannot remain stably in that position. Instead, under the imbalance of gravity and retaining force, it falls downwards and eventually returns to its initial position or to the next processing stage (e.g., onto a conveyor belt). This design cleverly utilizes the difference in retaining force to achieve automatic separation and movement of the wood chip, improving production efficiency.

[0031] The blowing system 50 is located in the gap between the feeding assembly 40 and the feeding bin 20, situated on one side panel of the feeding bin 20. Its main function is to blow air in the other three directions within this gap area. When wood chips fall from above onto the receiving frame 41, the blowing system 50 immediately activates, delivering a strong airflow into the gap area. This is done to effectively blow air onto the upper surface of the wood chips within the receiving frame 41 and the lower surface of the bottom layer of wood chips in the feeding bin 20. In this way, dust particles adhering to the surfaces of these wood chips can be quickly and thoroughly blown away, ensuring the cleanliness of the wood chips and thus improving the efficiency of subsequent processing and product quality.

[0032] The feeding mechanism also includes a control module (not shown), which is configured to trigger the air blowing system when the push plate is pressed down to its limit position. After a delay of 0.2-0.5 seconds following the wood chip abutting the retaining protrusion, the tension motor is controlled to release the receiving frame.

[0033] The workflow of the feeding mechanism 100 is as follows:

[0034] First, the operator opens the flip-up side panel of the feed hopper 20 and places the wood chips inside. The wood chips are securely held in the feed hopper 20 by the holding protrusion 21. Next, the propulsion motor 31 is started, which drives the propulsion plate 32 to move downward, applying downward pressure to the wood chips. This causes the wood chips to overcome the holding force of the holding protrusion 21 and fall downward into the receiving frame 41 of the feeding assembly 40.

[0035] When the wood chip falls into the receiving frame 41, the tension motor 42 starts and retracts, generating an upward pulling force that moves the receiving frame 41 upward, causing the wood chip to move upward and abut against the lower end of the retaining protrusion 21. Due to the difference in height and number of retaining protrusions 21 and retaining tips 411, the retaining force is different, and the wood chip will fall downward under the unbalanced action of gravity and retaining force.

[0036] As the wood chips fall from the feed hopper 20 to the receiving frame 41, the blowing system 50 is activated simultaneously, blowing a strong airflow into the gap between the feeding component 40 and the feed hopper 20 to blow away dust particles from the upper surface of the wood chips in the receiving frame 41 and the lower surface of the bottom layer of wood chips in the feed hopper 20, ensuring the cleanliness of the wood chip surface.

[0037] After completing the above actions, the feeding component 40 transports the cleaned wood chips to the next processing stage, such as a conveyor belt, for subsequent production processing. This cycle repeats continuously, and the feeding mechanism 100 realizes the functions of automatic feeding and cleaning of wood chips, effectively solving the problems of difficult wood chip feeding and easy dust adhesion on the surface in the existing technology, and greatly improving the efficiency of wood production and product quality.

[0038] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the stated features. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.

[0040] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A wood chip feeding mechanism, characterized by, include: support; The feeding hopper is mounted on the bracket and is open at the top and bottom. The lower ends of the four inner walls of the feeding hopper are provided with multiple retaining protrusions located on the same plane. A pushing component, located directly above the feed hopper, is used to press the wood chips downwards to disengage them from the holding protrusion; A feeding assembly is provided at intervals below the feeding hopper. The feeding assembly includes a receiving frame and a stretching motor. The four inner sides of the receiving frame are provided with retaining protrusions located on the same plane. The height of the retaining protrusions is lower than the height of the retaining protrusions. The stretching motor is symmetrically arranged on the outer sides of two opposite side plates of the feeding hopper. The two ends of the stretching motor are respectively fixed to the side plates of the feeding hopper and the side of the receiving frame, and are used to pull the receiving frame upward so that the wood piece abuts against the lower end of the retaining protrusion. A blowing system is provided in the space between the feeding hopper and the feeding assembly, and is used to spray airflow onto the upper and lower surfaces of the wood chips to remove dust. The height difference between the holding protrusion and the holding protrusion creates an unbalanced holding force, causing the wooden piece to fall automatically under the influence of gravity after contact.

2. The feeding mechanism according to claim 1, wherein: The number of the retaining protrusions is less than the number of the retaining protrusions.

3. The feeding mechanism according to claim 1, wherein: Each of the feeding bins has three retaining protrusions evenly spaced on its inner side, and each of the receiving frames has a retaining protrusion at the center of its inner side.

4. The feeding mechanism according to claim 1, wherein: The height of the retaining protrusion is 40%-60% of the height of the retaining protrusion.

5. The feeding mechanism according to claim 4, wherein: The retaining protrusions are made of hemispherical elastic rubber material, with a protrusion height of 0.5-1.2 mm.

6. The loading mechanism of claim 1, wherein: The feed hopper is provided with a flip-up side plate on one side, and the flipping shaft is located at the edge of the side plate.

7. The loading mechanism of claim 1, wherein: The stretching motor is a servo electric cylinder, and its cylinder body is fixed to the side plate of the feed hopper by a mounting plate. The piston rod of the servo electric cylinder is connected to the receiving frame by the mounting plate.

8. The feeding mechanism according to any one of claims 1 to 7, characterized in that: It also includes a control module, which is configured as follows: - When the push plate is pressed down to its limit position, the blowing system is triggered to start; - After the wooden piece abuts the retaining protrusion, delay for 0.2-0.5 seconds to control the tension motor to release the receiving frame.

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