An electric glue-applying mechanism for a wood comb machine

Abstract

An electric glue-applying mechanism for a wood combing machine includes a bracket and a glue tank mounted on a main unit. A main shaft is mounted on the bracket via a mounting plate, and a glue-applying wheel is mounted at the bottom of the main shaft, positioned above the glue tank. A glue pump is installed inside the glue tank, and a glue spray pipe is mounted on the side wall of the glue-applying wheel. The glue pump forces the glue in the glue tank into the glue spray pipe. The glue spray pipe has several spray holes facing the glue-applying wheel, and the glue is sprayed onto the glue-applying wheel from these holes. A drive mechanism is also mounted on the bracket, driving the glue-applying wheel to rotate via the main shaft. The beneficial effects of this invention are: the rotational speed of the glue-applying wheel directly determines its surface linear velocity and the efficiency and film thickness of the glue transferred to the wood. When a thinner glue layer needs to be applied, the motor speed can be increased; when a thicker glue layer needs to be applied, the motor speed can be decreased.

Description

Technical Field

[0001] This utility model relates to the field of woodworking machinery technology, specifically an electric glue-applying mechanism for a wood combing machine. Background Technology

[0002] Timber tenon jointing technology is a key process widely used in modern timber processing, particularly in solid wood splicing and engineered wood manufacturing. This process involves machining interlocking, comb-like tenons at the ends of timber, applying adhesive, and then pressing them together. This allows for the effective lengthening of short timber and the reuse of bent timber, significantly improving timber utilization. In the entire process, the adhesive application to the tenons is crucial; the uniformity, continuity, and stability of the adhesive application directly determine the final joint strength and product quality.

[0003] Currently, most existing wood combing machines use an immersion-type glue application mechanism. This traditional mechanism typically includes an open glue tank or trough and a glue-applying wheel partially submerged in the glue. Its working principle is as follows: the lower half of the glue-applying wheel is immersed in the glue in the tank. When the wheel rotates under drive, its surface carries a layer of glue film from the tank. At this time, the wood board with the comb teeth prepared passes over or to the side of the glue-applying wheel and comes into contact with it. The glue film on the surface of the wheel is then transferred and applied to the comb teeth of the wood, completing the glue application process.

[0004] However, after long-term production practice, this traditional immersion coating mechanism has revealed many inherent defects that are difficult to overcome, mainly in the following aspects: 1. Discontinuous glue application limits production efficiency. In some processing scenarios, operators need to precisely control the contact timing between the wood board and the glue application wheel to apply glue to designated areas of the board. Especially when the length of the wood board is greater than the circumference of the glue application wheel, the amount of glue carried in one revolution may not be sufficient to cover the entire area of ​​the board to be processed. This forces the glue application wheel to be re-immersed in glue to "collect glue" before continuing to the next section, making the glue application process for a single board intermittent and preventing continuous, smooth application. This intermittency not only reduces the efficiency of a single glue application but also affects the processing rhythm of the entire production line, limiting the improvement of overall production efficiency.

[0005] 2. Significant glue waste and high production costs. Immersion gluing is an open-type gluing method. A considerable portion of the glue carried from the glue bucket by the applicator roller, besides the amount applied to the wood, drips or runs due to gravity, or is thrown out during high-speed rotation, resulting in direct glue waste. Simultaneously, prolonged exposure of the glue bucket to air causes the glue surface to dry and form a skin, and solvents to evaporate easily, leading to a decline in glue performance or even spoilage. These factors collectively contribute to unnecessary glue loss, significantly increasing production costs for enterprises.

[0006] 3. Unstable glue application affects splicing quality. The thickness of the glue film applied by the immersion glue application mechanism is affected by a combination of factors, including the glue level in the glue tank, the viscosity of the glue itself, the rotation speed of the glue application wheel, and the ambient temperature and humidity, making precise control extremely difficult. For example, as the glue is consumed, the glue level drops, and the amount of glue carried by the glue application wheel decreases accordingly; furthermore, prolonged exposure of the glue causes viscosity changes, which also leads to fluctuations in the glue thickness. This instability and unevenness in glue application directly results in some comb teeth having too much glue and others having too little, severely affecting the final bonding strength and even causing quality defects such as cracking and delamination, making it difficult to guarantee the product qualification rate.

[0007] 4. The equipment is difficult to clean and maintain, and labor-intensive. Due to its open design, dripping and splattering glue contaminates the entire glue application mechanism and surrounding equipment, making cleaning extremely difficult. Especially after production tasks are completed, the glue buckets and application wheels need to be thoroughly cleaned to prevent the glue from hardening. This process is not only time-consuming and labor-intensive, but also often requires the use of specific chemical solvents, which have certain negative impacts on the health of operators and the environment. Frequent and complex maintenance work also increases equipment downtime, thus necessitating further improvements. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an electric glue application mechanism for a wood comb machine that is simple in structure, low in manufacturing cost, and capable of continuous, precise, economical, and efficient glue application.

[0009] The purpose of this utility model is achieved in the following way: an electric glue application mechanism for a wood combing machine, which includes a bracket and a glue tank mounted on the main unit. A main shaft is mounted on the bracket via a mounting plate, and a glue application wheel is mounted on the bottom of the main shaft. The glue application wheel is located above the glue tank. A glue pump is installed inside the glue tank, and a glue spray pipe is installed on the side wall of the glue application wheel. The glue pump presses the glue in the glue tank into the glue spray pipe. The glue spray pipe is provided with several glue spray holes facing the glue application wheel, and the glue is sprayed from the glue spray holes onto the glue application wheel. The bracket is also equipped with a drive mechanism, which drives the glue-applying wheel to rotate via a main shaft.

[0010] Furthermore, the driving mechanism is a drive motor mounted on the mounting plate.

[0011] Furthermore, the mounting plate is also provided with a bearing seat, and the glue pump connecting shaft is rotatably installed in the bearing seat. The glue pump connecting shaft extends downward out of the bearing seat and is connected to the glue pump. A glue supply pulley is installed on the top of the glue pump connecting shaft and is connected to the drive mechanism.

[0012] Furthermore: a drive pulley is mounted on the output shaft of the drive motor, and an overrunning clutch wheel is mounted on the main shaft. The drive pulley is connected to the overrunning clutch wheel via a belt.

[0013] Furthermore: the glue pump includes a screw sleeve disposed inside the glue tank, and a screw shaft is rotatably mounted inside the screw sleeve. The screw shaft is driven by a drive mechanism to rotate inside the screw sleeve. The bottom of the screw sleeve is connected to the glue bucket, and the top of the screw sleeve is connected to the glue spray pipe. When the screw shaft rotates, glue is drawn from the glue bucket and enters the glue spray pipe through the lifting of the screw sleeve.

[0014] Furthermore: the glue spray nozzle is axially slidably fitted onto the outside of the screw sleeve, and the glue spray nozzle is connected to a height adjustment device.

[0015] Furthermore, the height adjustment device is a glue-applying positioning seat fitted outside the bearing housing. The glue-applying positioning seat is connected to the glue spray pipe through a glue-applying positioning rod. Adjusting the height of the glue-applying positioning seat can adjust the height of the glue spray pipe relative to the glue-applying wheel.

[0016] Furthermore: the screw shaft passes through the glue spray pipe and is connected to the glue pump connecting shaft via a universal joint; a pressure sealing seat is provided between the screw shaft and the top opening of the glue spray pipe.

[0017] Furthermore, a height pointer is installed on the adhesive positioning seat, and correspondingly, a height indicator is provided on the mounting plate.

[0018] Furthermore, the bracket is vertically slidably mounted on the main unit via a height guide seat, and a lifting cylinder is also provided between the main unit and the bracket, which pushes the bracket to move vertically.

[0019] The beneficial effects of this utility model are: 1. Simple structure, low manufacturing cost, and improved market competitiveness.

[0020] 2. By using a drive motor as the power source for the glue-applying roller, a frequency converter or other speed control device can be easily incorporated to infinitely adjust the motor speed. The speed of the glue-applying roller directly determines its surface linear velocity, as well as the efficiency and film thickness of the glue transfer onto the wood. When a thinner glue layer is required, the motor speed can be increased; when a thicker glue layer is required, the motor speed can be decreased.

[0021] 3. This utility model employs a glue pump to actively and forcibly pump glue from the glue tank to the glue spray nozzle, which then continuously sprays fresh glue onto the surface of a rotating coating wheel. This design ensures that the coating wheel surface maintains a uniform glue film at all times, completely eliminating the limitation of repeatedly immersing the glue tank to "take glue." Therefore, regardless of the length of the wood board to be processed, this mechanism can achieve a one-time, uninterrupted continuous glue application operation, eliminating the "intermittent" glue application in existing technologies, and greatly improving the processing efficiency of a single board and the production cycle of the entire production line.

[0022] 4. Because the glue is supplied in measured quantities via a pump, the supply amount is mainly determined by the pump parameters and speed, and is largely unaffected by the amount of glue remaining in the glue tank. This means that whether the glue tank is full or nearly empty, the amount of glue sprayed onto the application wheel remains highly stable. This stable glue supply ensures a high degree of uniformity in the glue layer thickness applied to each piece of processed wood and each tenon joint, fundamentally guaranteeing the stable and reliable bonding quality of the final assembled product and improving the product qualification rate.

[0023] 5. In this invention, the applicator wheel is positioned above the glue tank, rather than immersed in it. The glue is applied directly to the applicator wheel through a spray nozzle. This "top-spraying" glue supply method, combined with the relatively enclosed glue tank, greatly reduces the contact area between the glue and air. This effectively slows down the evaporation of solvents in the glue, prevents the glue surface from forming a skin and deteriorating, and extends the glue's service life. At the same time, this structure also eliminates the waste and environmental pollution caused by glue dripping and splashing in traditional methods, simplifying equipment maintenance and cleaning. Attached Figure Description

[0024] Figure 1 This is a rendering of the overall assembly of the present invention and the combing machine.

[0025] Figure 2 , 3 This is a schematic diagram of the structure of this utility model.

[0026] Figure 4 This is a cross-sectional view of the structure of this utility model.

[0027] Figure 5 This is an exploded view of the structure of this utility model.

[0028] Figure 6 This is a schematic diagram of the concealed glue bucket structure of this utility model. Figure 7 This is a schematic diagram of the glue pump structure in this utility model.

[0029] Figure 8 This is a cross-sectional view of the glue pump structure in this utility model.

[0030] Explanation of reference numerals in the attached drawings: 1. Main unit; 2. Bracket; 21. Height guide seat; 22. Lifting cylinder; 3. Glue bucket; 4. Mounting plate; 41. Glue pump connecting shaft; 42. Bearing seat; 43. Glue application positioning seat; 44. Glue positioning rod; 45. Glue pulley; 46. Height pointer; 47. Height indicator; 5. Main shaft; 51. Clutch wheel; 6. Glue wheel; 7. Glue pump; 71. Screw sleeve; 72. Screw shaft; 73. Universal joint; 74. Pressure sealing seat; 8. Glue spray pipe; 81. Glue spray hole; 9. Drive motor; 91. Drive pulley. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings. An electric glue-applying mechanism for a wood combing machine includes a bracket 2 and a glue tank 3 mounted on a main unit 1. A main shaft 5 is mounted on the bracket 2 via a mounting plate 4. A glue-applying wheel 6 is mounted at the bottom of the main shaft 5, and the glue-applying wheel 6 is located above the glue tank 3. A glue pump 7 is installed inside the glue tank 3, and a glue spray pipe 8 is installed on the side wall of the glue-applying wheel 6. The glue pump 7 pressurizes the glue in the glue tank 3 into the glue spray pipe 8. The glue spray pipe 8 has several spray holes 81 facing the glue-applying wheel 6, and the glue is sprayed from the spray holes 81 onto the glue-applying wheel 6. The bracket 2 is also equipped with a drive mechanism, which drives the glue-applying wheel 6 to rotate via the main shaft 5.

[0032] In this embodiment: the drive mechanism is activated, driving the main shaft 5 to rotate the glue-applying wheel 6. Simultaneously, the glue pump 7, installed in the glue tank 3, is activated, drawing glue from the tank and pressurizing it for pumping into the glue spray pipe 8 located to the side of the glue-applying wheel 6. Under pressure, the glue is sprayed evenly in a mist or fine stream from the glue spray pipe 8 towards several spray holes 81 on the rotating glue-applying wheel 6. This forms a uniform, continuous glue film on the surface of the glue-applying wheel 6. When the end face of the wood comb teeth to be glued contacts the glue-applying wheel 6, the glue film is transferred and applied to the wood, completing the glue application process.

[0033] This solution fundamentally changes the traditional "immersion" adhesive application method. By using a "pump-on spraying" method, it achieves separate control of adhesive supply and coating by the coating wheel. Simultaneously, it enables continuous adhesive supply, with fresh adhesive constantly replenishing the surface of the coating wheel, allowing for uninterrupted coating and improving production efficiency.

[0034] In addition, the glue supply is stable and unaffected by the liquid level in the glue container, ensuring uniform glue application. It also reduces glue contamination and waste; the relatively sealed glue container prevents glue evaporation, skinning, and impurities from falling in, while also eliminating dripping and splashing problems associated with immersion glue application.

[0035] In one embodiment, the driving mechanism is a drive motor 9 mounted on the mounting plate 4. The drive motor 9 serves as the core power source, and its output shaft is connected to the main shaft 5 via a transmission mechanism, providing stable and controllable power for the rotation of the glue-applying wheel 6. The drive motor can be a speed-adjustable servo motor, stepper motor, or frequency converter motor. Precise adjustment of the speed allows for precise control of the glue application amount.

[0036] In one embodiment: the mounting plate 4 is further provided with a bearing seat 42, the glue pump connecting shaft 41 is rotatably installed in the bearing seat 42, the glue pump connecting shaft 41 extends downward out of the bearing seat 42 and is connected to the glue pump 7, and the top of the glue pump connecting shaft 41 is equipped with a glue supply pulley 45 connected to the drive mechanism.

[0037] In this embodiment, the drive mechanism not only drives the dispensing wheel but also drives the glue supply pulley 45 to rotate via a belt or other means. The glue supply pulley 45 drives the glue pump connecting shaft 41 to rotate within the bearing housing 42, and the connecting shaft then transmits power to the glue pump 7 below, causing it to pump glue.

[0038] This structure cleverly utilizes a single drive mechanism to simultaneously drive the applicator roller and the glue pump, eliminating the need for an additional motor for the glue pump. This simplifies the mechanical structure and electrical control, reducing manufacturing costs and potential points of failure. Furthermore, it achieves synchronized start and stop of glue application and supply, ensuring that glue is always supplied when the applicator roller is rotating, and vice versa, avoiding situations of "dry rotation" or "dry spraying."

[0039] In one embodiment: a drive pulley 91 is mounted on the output shaft of the drive motor 9, and an overrunning clutch wheel 51 is mounted on the main shaft 5. The drive pulley 91 is connected to the overrunning clutch wheel 51 via a belt.

[0040] In this embodiment, the overrunning clutch allows for unidirectional power transmission. When the motor is driving, power is transmitted normally; when the motor stops, the glue-applying wheel may continue to rotate due to inertia. At this time, the overrunning clutch will "slip," allowing the glue-applying wheel to rotate freely without dragging the motor in the opposite direction, thus protecting the motor and transmission system. Simultaneously, this also facilitates easy manual rotation of the glue-applying wheel for cleaning or adjustment when not in operation.

[0041] In one embodiment: the glue pump 7 includes a screw sleeve 71 disposed inside the glue tank 3, and a screw shaft 72 is rotatably mounted inside the screw sleeve 71. The screw shaft 72 is driven by a drive mechanism to rotate inside the screw sleeve 71. The bottom of the screw sleeve 71 is in communication with the glue tank 3, and the top of the screw sleeve 71 is connected to the glue spray pipe 8. When the screw shaft 72 rotates, glue is drawn from the glue tank 3 and enters the glue spray pipe 8 through the lifting of the screw sleeve 71.

[0042] In this embodiment: when the drive mechanism drives the screw shaft 72 to rotate inside the screw sleeve 71 via the glue pump connecting shaft 41, the screw's spiral structure acts like a screw conveyor, continuously "twisting" and lifting the glue in the glue bucket 3 at the bottom, generating a certain pressure, and finally pressing it from the outlet at the top of the screw sleeve 71 into the glue spray pipe 8 that is connected to it.

[0043] It provides a very smooth and continuous glue flow, which is crucial for forming a uniform glue film on the applicator. At the same time, the structure is simple, reliable, not prone to clogging, and easy to maintain.

[0044] In one embodiment: the glue spray nozzle 8 is axially slidably fitted outside the screw sleeve 71, and the glue spray nozzle 8 is connected to a height adjustment device.

[0045] In this embodiment, the glue spray nozzle 8 is no longer fixed, but can slide axially along the outer wall of the screw sleeve 71. The vertical position of the glue spray nozzle 8 can be easily changed by a "height adjustment device" that is not specifically defined.

[0046] By adjusting the height of the glue spray nozzle 8, the vertical area of ​​the glue sprayed onto the surface of the glue application wheel 6 can be precisely controlled. This allows the mechanism to adapt to the glue application needs of wooden tenons of different widths and specifications, ensuring that the glue is sprayed only on the required locations, further improving the glue utilization rate and application accuracy.

[0047] In one embodiment: the height adjustment device is a glue-applying positioning seat 43 fitted outside the bearing seat 42. The glue-applying positioning seat 43 is connected to the glue spray pipe 8 through the glue-applying positioning rod 44. Adjusting the height of the glue-applying positioning seat 43 can adjust the height of the glue spray pipe 8 relative to the glue-applying wheel 6.

[0048] In use, the operator adjusts the vertical position of the glue application positioning seat 43, which in turn drives the connected glue application positioning rod 44, thereby pushing or pulling the glue spray nozzle 8 to slide up and down along the screw sleeve 71, thus adjusting the nozzle height. This structure provides a stable, reliable, and easy-to-operate height adjustment solution. Utilizing the existing bearing seat 42 as a reference, the structure is compact, the adjustment process is smooth, and it is easy to lock, ensuring the stability of the adjusted position.

[0049] In one embodiment: the screw shaft 72 passes through the glue spray pipe 8 and is connected to the glue pump connecting shaft 41 via a universal joint 73. A pressure sealing seat 74 is provided between the screw shaft 72 and the top opening of the glue spray pipe 8.

[0050] In this embodiment, the universal joint 73 ensures smooth transmission. Even if there is a slight angular deviation or coaxiality error between the connecting shaft and the screw shaft 72, the universal joint can effectively compensate, ensuring smooth power transmission and avoiding mechanical interference and wear. Furthermore, the pressure-sealed seat 74 is crucial for reliable pumping. It effectively prevents pressurized adhesive from leaking out from the gap between the screw shaft and the top of the nozzle, ensuring that all adhesive is guided to the spray nozzle, improving pumping efficiency and system cleanliness.

[0051] In one embodiment, a height pointer 46 is mounted on the adhesive application positioning seat 43, and correspondingly, a height indicator 47 is provided on the mounting plate 4. When the adhesive application positioning seat 43 is adjusted, the height pointer 46 moves along with it and indicates the current height value on the fixed height indicator 47. The operator can precisely adjust the nozzle to the predetermined height according to the scale and can record the optimal height parameters for different workpieces. This replaces the vague adjustment based on experience with precise data, greatly improving the standardization level of production and debugging efficiency.

[0052] In one embodiment: the bracket 2 is vertically slidably mounted on the host 1 via a height guide seat 21, and a lifting cylinder 22 is also provided between the host 1 and the bracket 2, which pushes the bracket 2 to move vertically.

[0053] In this embodiment: the entire mechanism is connected to the main unit via a height guide seat 21 and can slide vertically under the guidance of the guide seat. The lifting cylinder 22 serves as a power element, and its extension and retraction can push the entire bracket 2, along with all its components, to rise or fall as a whole. When the equipment needs to be briefly stopped, the lifting cylinder descends, immersing the glue-applying wheel in the glue bucket, thereby preventing the glue on the glue-applying wheel from curing.

[0054] In summary, the overall working process and principle of the electric glue-applying mechanism for a wood combing machine disclosed in this utility model are as follows: The core idea of ​​this organization is to use an "active pumping spray" adhesive supply method to replace the traditional immersion adhesive application method.

[0055] During operation, the drive motor 9 mounted on the bracket 2 starts and drives two core components simultaneously through a belt drive system: one is to drive the main shaft 5 and the glue applicator 6 to rotate through the overrunning clutch wheel 51; the other is to drive the glue pump 7 to work through the glue supply pulley 45.

[0056] The glue pump 7 is specifically a screw pump, whose screw shaft 72 rotates under the drive of a motor, continuously and steadily lifting the glue at the bottom of the glue tank 3 and pressurizing it into the adjustable-height glue spray pipe 8. The glue is evenly sprayed onto the surface of the rotating glue-applying wheel 6 through the spray nozzles 81 on the spray pipe, forming a fresh and uniform glue film. The glue application is completed when the wooden workpiece comes into contact with the glue-applying wheel.

[0057] Based on this, the present invention also integrates a series of precise adjustment and control functions: Glue application control: By adjusting the speed of the drive motor 9, the speed of the glue application wheel 6 is directly controlled, thereby precisely adjusting the thickness of the glue applied to the wood and saving glue.

[0058] Fine-tuning of glue application position: The vertical height of the glue spray nozzle 8 can be precisely adjusted by the positioning seat with pointer and scale, so that the glue can be accurately sprayed onto the designated area of ​​the glue application wheel to adapt to workpieces of different specifications.

[0059] Overall lifting mechanism: The lifting cylinder 22 can quickly raise or lower the entire glue application mechanism relative to the main unit 1, which greatly facilitates the equipment during short shutdowns, prevents the glue on the application wheel from curing, and makes equipment maintenance easier.

[0060] In summary, this utility model, through its integrated drive design, pump-type spray adhesive supply system, and multi-dimensional precision adjustment mechanism, constitutes a highly efficient adhesive application solution that enables continuous operation, precise and controllable adhesive application amount, strong adaptability, and convenient maintenance.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An electric glue-applying mechanism for a wood combing machine, characterized in that: It includes a bracket (2) and a glue bucket (3) mounted on the main unit (1). A main shaft (5) is mounted on the bracket (2) via a mounting plate (4). A glue-applying wheel (6) is mounted on the bottom of the main shaft (5). The glue-applying wheel (6) is located above the glue bucket (3). A glue pump (7) is installed inside the glue bucket (3). A glue spray pipe (8) is installed on the side wall of the glue-applying wheel (6). The glue pump (7) presses the glue in the glue bucket (3) into the glue spray pipe (8). The glue spray pipe (8) has several glue-spraying holes (81) facing the glue-applying wheel (6). The glue is sprayed from the glue-spraying holes (81) onto the glue-applying wheel (6). The bracket (2) is also equipped with a drive mechanism, which drives the glue-applying wheel (6) to rotate via the main shaft (5).

2. The electric glue-applying mechanism for a wood combing machine according to claim 1, characterized in that: The drive mechanism is a drive motor (9) mounted on the mounting plate (4).

3. The electric glue-applying mechanism for a wood combing machine according to claim 1, characterized in that: The mounting plate (4) is also provided with a bearing seat (42), and the glue pump connecting shaft (41) is rotatably installed in the bearing seat (42). The glue pump connecting shaft (41) extends downward out of the bearing seat (42) and is connected to the glue pump (7). The top of the glue pump connecting shaft (41) is equipped with a glue supply pulley (45) and connected to the drive mechanism.

4. The electric glue-applying mechanism for a wood combing machine according to claim 2, characterized in that: The drive motor (9) has a drive pulley (91) mounted on its output shaft and an overrunning clutch wheel (51) mounted on its main shaft (5). The drive pulley (91) is connected to the overrunning clutch wheel (51) via a belt.

5. The electric glue-applying mechanism for a wood combing machine according to claim 3, characterized in that: The glue pump (7) includes a screw sleeve (71) disposed inside the glue tank (3), and a screw shaft (72) is rotatably installed inside the screw sleeve (71). The screw shaft (72) is driven by a drive mechanism to rotate inside the screw sleeve (71). The bottom of the screw sleeve (71) is connected to the glue bucket (3), and the top of the screw sleeve (71) is connected to the glue spray pipe (8). When the screw shaft (72) rotates, glue is drawn from the glue bucket (3) and enters the glue spray pipe (8) through the lifting of the screw sleeve (71).

6. The electric glue-applying mechanism for a wood combing machine according to claim 5, characterized in that: The glue spray nozzle (8) is axially slidably fitted outside the screw sleeve (71), and the glue spray nozzle (8) is connected to a height adjustment device.

7. The electric glue-applying mechanism for a wood combing machine according to claim 6, characterized in that: The height adjustment device is a glue-applying positioning seat (43) fitted outside the bearing seat (42). The glue-applying positioning seat (43) is connected to the glue spray pipe (8) through the glue-applying positioning rod (44). By adjusting the height of the glue-applying positioning seat (43), the height of the glue spray pipe (8) relative to the glue-applying wheel (6) can be adjusted.

8. The electric glue-applying mechanism for a wood combing machine according to claim 5, characterized in that: The screw shaft (72) passes through the glue spray pipe (8) and is connected to the glue pump connecting shaft (41) via a universal joint (73). A pressure sealing seat (74) is provided between the screw shaft (72) and the top opening of the glue spray pipe (8).

9. The electric glue-applying mechanism for a wood combing machine according to claim 7, characterized in that: The adhesive positioning seat (43) is equipped with a height pointer (46), and correspondingly, the mounting plate (4) is equipped with a height indicator ruler (47).

10. The electric glue-applying mechanism for a wood combing machine according to claim 1, characterized in that: The bracket (2) is vertically slidably mounted on the host (1) via a height guide seat (21). A lifting cylinder (22) is also provided between the host (1) and the bracket (2), and the lifting cylinder (22) pushes the bracket (2) to move vertically.

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