A particleboard preparation equipment for double-sided adhesive coating of particleboard.

Abstract

This invention discloses a double-sided adhesive coating device for particleboard preparation, comprising a horizontally rotating drum with support frames rotatably mounted at both ends. An annular partition divides the drum's interior into an adhesive coating chamber and a conveying chamber. Several sets of evenly distributed negative pressure holes are formed on the sidewalls of the drum corresponding to the adhesive coating chambers, and a negative pressure cover is provided on the outer wall of the drum corresponding to the negative pressure holes. This double-sided adhesive coating device for particleboard preparation can sequentially lift and apply adhesive to an appropriate amount of particleboard, and then convey, disperse, mix, and discharge the coated particleboard. This improves the adhesive coating effect, thereby enhancing the quality of the board. Furthermore, the continuous air cooling of the particleboard throughout the process prevents overheating and premature adhesive solidification, avoids crushing the particleboard, and eliminates the need for multiple adhesive applications, reducing adhesive waste and improving work efficiency.

Description

Technical Field

[0001] This invention relates to the field of particleboard preparation technology, specifically to a double-sided adhesive coating device for particleboard preparation. Background Technology

[0002] Particleboard, also known as chipboard, is a type of engineered wood product made by cutting various branches, small-diameter wood, fast-growing timber, and wood chips into fragments of a certain size, drying them, mixing them with adhesives, hardeners, waterproofing agents, etc., and pressing them under certain temperature and pressure. The particles are not evenly arranged.

[0003] A glue mixer is a machine used to uniformly mix glue with wood shavings. It mainly includes: roller mixers, impeller mixers, centrifugal mixers, standard mixers, drum mixers, vertical mixers, blade mixers, and high-speed centrifugal mixers. However, all of these mixers achieve the mixing of wood shavings and glue through the rotation of a mixing shaft or drum, thus completing the glue application. This method has the following drawbacks: 1. When mixing glue by rotation, the glue is mainly dispersed on each wood shaving through friction between them. The quality of the glue mixing depends on the stirring time, resulting in low productivity. 2. When the mixing shaft or drum rotates, the friction between the wood shavings generates heat, and the increased temperature can accelerate the solidification of the glue. 3. When mixing glue by rotation, a short stirring time makes it difficult to disperse the clumps of wood shavings, resulting in glue being applied only to one side or part of the shavings, leading to poor glue application and affecting the quality of the boards.

[0004] In addition, a spray-type continuous adhesive mixer is also used in particleboard production. This mixer typically consists of a feed inlet, mixing tank, nozzles, mixing shaft, discharge outlet, needle rollers, and a transmission device. During operation, weighed particleboard shavings enter the mixing tank through the feed inlet. The adhesive sprayed from the nozzles above the mixer mixes with the suspended particleboard shavings, which are agitated by the mixing rollers. Due to the slope of the mixing tank, the mixed particleboard shavings move towards the discharge outlet and are discharged. The needle rollers can loosen any clumps of particleboard shavings. However, this type of mixer tends to break up the particleboard shavings, reducing their quality. Furthermore, the coated particleboard shavings can fall and mix with the uncoated shavings, resulting in repeated coating of the shavings, wasting adhesive and reducing work efficiency.

[0005] To address the aforementioned problems, this invention provides a double-sided adhesive coating device for particleboard preparation, thereby solving the problems. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the defects of the existing equipment and provide a double-sided adhesive coating device for particleboard preparation. The device can sequentially lift an appropriate amount of particleboard for lifting and double-sided adhesive coating, and then transport, disperse, mix and discharge the coated particleboard. This improves the adhesive coating effect on the particleboard, thereby improving the quality of the board. Furthermore, the entire process continuously cools the particleboard with air, which can prevent the particleboard from overheating and causing the adhesive to solidify prematurely. It can also prevent the particleboard from being crushed and avoid multiple coating processes, thereby reducing adhesive waste and improving work efficiency. This effectively solves the problems in the background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a particleboard preparation double-sided adhesive coating device, comprising a horizontally rotating drum, with support frames rotatably mounted at both ends of the drum, an annular partition inside the drum dividing the drum cavity into an adhesive coating cavity and a conveying cavity, a plurality of uniformly distributed negative pressure holes being formed on the side wall of the drum corresponding to the adhesive coating cavity, and a negative pressure cover being formed on the outer wall of the drum corresponding to the negative pressure holes, and a negative pressure cavity corresponding to the negative pressure holes being formed inside the negative pressure cover.

[0008] The upper part of the glue-applying cavity is provided with a conveyor belt, and the end of the conveyor belt extends into the conveying cavity. The side of the conveyor belt is provided with a first glue-applying tube group, and the upper side of the conveyor belt is provided with a second glue-applying tube group.

[0009] As a preferred technical solution of the present invention, an annular sealing plate is rotatably sealed on the middle of the outer side of the negative pressure cover. The annular sealing plate is provided with a plurality of air extraction pipes. When the roller rotates from bottom to top under the air extraction state, the negative pressure chamber can be kept in a negative pressure state. An annular tube is sleeved on the outer side of the negative pressure cover. The annular sealing plate is connected to two support frames through a connecting seat. The air outlet end of the air extraction pipe is connected to the annular tube, and the annular tube is provided with a connecting pipe for connecting to an external negative pressure pump.

[0010] As a preferred embodiment of the present invention, an air inlet pipe is provided in the middle of the top air extraction pipe, and a three-way valve is provided at the corresponding part of the air extraction pipe and the air inlet pipe.

[0011] As a preferred embodiment of the present invention, the first glue-applying pipe assembly includes a double-cavity pipe installed on the side of the conveyor belt. The double-cavity pipe includes a lower ventilation cavity and an upper glue delivery cavity. The side of the double-cavity pipe corresponding to the ventilation cavity is provided with uniformly distributed air nozzles, and the side of the double-cavity pipe corresponding to the glue delivery cavity is provided with uniformly distributed glue spraying nozzles. When the roller rotates, it drives the wood shavings to pass through the air nozzles and glue spraying nozzles in sequence.

[0012] As a preferred embodiment of the present invention, the air outlet of the jet nozzle is inclined toward the delivery chamber.

[0013] As a preferred embodiment of the present invention, the second adhesive coating tube assembly includes two conveying pipes installed on a conveyor belt, and the conveying pipes are provided with atomizing nozzles capable of spraying adhesive onto wood shavings on the conveyor belt.

[0014] As a preferred embodiment of the present invention, the interior of the conveying cavity is provided with spiral blades, and one end of the spiral blades is connected to an annular partition.

[0015] As a preferred embodiment of the present invention, a feed hopper is provided on a support frame corresponding to the starting end of the conveyor belt, and a discharge port is provided on the lower side of another support frame.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The particleboard preparation double-sided adhesive coating equipment of the present invention, wherein the particleboard follows the rotation of the drum and passes through the air nozzle and the adhesive spray nozzle in sequence, and reaches the top of the conveyor belt. When the particleboard passes through the air nozzle, the air sprayed by the air nozzle cools the particleboard and removes the particleboard that is stuck together and the particleboard that is not firmly attached. When the particleboard passes through the adhesive spray nozzle, the adhesive spray nozzle sprays adhesive onto the exposed surface of the particleboard.

[0018] 2. In the particleboard preparation double-sided gluing equipment of the present invention, when the particleboard moves directly above the conveyor belt, the three-way valve is adjusted to connect the air inlet pipe to the negative pressure chamber through the air extraction pipe. At this time, the negative pressure chamber at the top is in a negative pressure state, and the particleboard automatically falls onto the conveyor belt under the action of gravity. At this time, the atomizing nozzle can perform gluing operation on the particleboard, thereby completing the protective double-sided gluing operation.

[0019] 3. The particleboard preparation double-sided adhesive coating equipment of the present invention can sequentially lift an appropriate amount of particleboard for lifting and double-sided adhesive coating, and then transport, disperse, mix and discharge the coated particleboard. This can improve the adhesive coating effect on the particleboard, thereby improving the quality of the board. Furthermore, the particleboard is continuously cooled by air throughout the process, which can prevent the particleboard from overheating and causing the adhesive to solidify prematurely. It can also prevent the particleboard from being crushed and avoid multiple adhesive coatings, thereby reducing adhesive waste and improving work efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the left-side view structure;

[0022] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure;

[0023] Figure 4 for Figure 1 A front view structural diagram of the cross-section at the conveying cavity;

[0024] Figure 5 for Figure 1 A front view structural diagram of the cross-section at the glue application cavity;

[0025] Figure 6 for Figure 1 A front view structural diagram of the cross-section at the annular sealing plate;

[0026] Figure 7 This is a schematic diagram of the structure of the first adhesive coating tube assembly in this invention.

[0027] In the diagram: 1 Support frame, 2 Roller, 21 Annular partition, 3 Glue application chamber, 31 Negative pressure hole, 4 Conveying chamber, 41 Spiral blade, 5 Negative pressure cover, 51 Negative pressure chamber, 6 Annular sealing plate, 61 Air extraction pipe, 62 Annular pipe, 63 Air inlet pipe, 64 Three-way valve, 7 Conveyor belt, 8 Dual-chamber pipe, 81 Air jet nozzle, 82 Glue spray nozzle, 9 Conveying pipe, 91 Atomizing nozzle. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-7 This invention provides a technical solution: a double-sided adhesive coating device for particleboard preparation, comprising a horizontally rotating roller 2, which is a horizontal roller, with support frames 1 rotatably mounted at both ends of the roller 2 to support the roller 2 and facilitate its rotation; an annular partition 21 is provided inside the roller 2, dividing the inner cavity of the roller 2 into an adhesive coating chamber 3 and a conveying chamber 4, which can prevent uncoated particleboard from entering the conveying chamber 4; several sets of evenly distributed negative pressure holes 31 are opened on the side wall of the roller 2 corresponding to the adhesive coating chamber 3, and a negative pressure cover 5 is provided on the outer wall of the roller 2 corresponding to the negative pressure holes 31, and a negative pressure chamber 51 corresponding to the negative pressure holes 31 is opened inside the negative pressure cover 5. After negative pressure is generated inside the negative pressure chamber 51, the particleboard is adsorbed at the position of the negative pressure hole 31, which facilitates the lifting of the particleboard and subsequent double-sided adhesive coating operation.

[0030] like Figure 3As shown, a conveyor belt 7 is provided at the upper end of the glue coating chamber 3, and the end of the conveyor belt 7 extends into the conveying chamber 4. A first glue coating pipe group is provided on the side of the conveyor belt 7, and a second glue coating pipe group is provided on the upper side of the conveyor belt 7. The two glue coating pipe groups apply glue to both sides of the wood shavings respectively. The conveyor belt 7 can transport the glued wood shavings into the conveying chamber 4.

[0031] Preferred, such as Figure 5 As shown, the part corresponding to the glue-coating cavity 3 and the negative pressure hole 31 is a planar structure, which can improve the adsorption effect on wood shavings.

[0032] Furthermore, in order to generate negative pressure inside the negative pressure chamber 51, so that the wood shavings are adsorbed onto the inner wall of the glue coating chamber 3, an annular sealing plate 6 is rotatably sealed on the middle of the outer side of the negative pressure cover 5. The annular sealing plate 6 is provided with several suction pipes 61. When the roller 2 rotates from bottom to top under the suction state of the several suction pipes 61, the negative pressure chamber 51 can be kept under negative pressure. An annular tube 62 is sleeved on the outer side of the negative pressure cover 5. The annular sealing plate 6 is connected to two support frames 1 through a connecting seat. The air outlet end of the suction pipe 61 is connected to the annular tube 62, and the annular tube 62 is provided with a connecting pipe for connecting to an external negative pressure pump.

[0033] by Figure 5 For example, when the roller 2 rotates counterclockwise, the annular sealing plate 6 and the three negative pressure chambers 51 at the bottom are all equipped with suction pipes 61. Furthermore, the annular sealing plate 6 is equipped with suction pipes 61 corresponding to the negative pressure chambers 51 at the top along the counterclockwise direction. The advantage of this design is that when the roller 2 rotates, it can absorb wood shavings from the bottom position and drive the wood shavings to the top under the action of negative pressure. When the wood shavings at the top position fall onto the conveyor belt 7, there are no wood shavings to absorb during the continued rotation of the top position, so there is no need to maintain the negative pressure state. Until it moves to the bottom position, the negative pressure chamber 51 reconnects with the suction pipes 61 to generate negative pressure again, which can reduce energy consumption.

[0034] Furthermore, in order to release the negative pressure state of the top negative pressure chamber 51 and allow the wood shavings to fall, an air inlet pipe 63 is provided in the middle of the top air extraction pipe 61. A three-way valve 64 is provided at the corresponding position of the air extraction pipe 61 and the air inlet pipe 63. When the wood shavings move directly above the conveyor belt 7, the three-way valve 64 is adjusted to make the air inlet pipe 63 connect with the negative pressure chamber 51 through the air extraction pipe 61. At this time, the top negative pressure chamber 51 is in contact with the negative pressure state, and the wood shavings fall automatically onto the conveyor belt 7 under the action of gravity.

[0035] Furthermore, to prevent some wood shavings from being lifted along with the conveyor belt due to adhesion, the first glue application pipe assembly includes a double-cavity pipe 8 installed on the side of the conveyor belt 7. The double-cavity pipe 8 includes a lower ventilation cavity and an upper glue delivery cavity. The side of the double-cavity pipe 8 corresponding to the ventilation cavity is provided with evenly distributed air nozzles 81, and the side of the double-cavity pipe 8 corresponding to the glue delivery cavity is provided with evenly distributed glue spray nozzles 82. When the drum 2 rotates, it drives the wood shavings to pass through the air nozzles 81 and glue spray nozzles 82 in sequence. As the wood shavings follow the rotation of the drum 2, they pass through the air nozzles 81 and glue spray nozzles 82 in sequence and reach directly above the conveyor belt 7. When the wood shavings pass through the air nozzles 81, the air sprayed by the air nozzles 81 cools the wood shavings and removes the wood shavings that are stuck together and those that are not firmly adhered. When the wood shavings pass through the glue spray nozzles 82, the glue spray nozzles 82 spray glue onto the exposed surface of the wood shavings.

[0036] Furthermore, in order to cool down the wood shavings inside the conveying chamber 4 and increase the discharge speed of the wood shavings inside the conveying chamber 4, the air outlet of the jet nozzle 81 is inclined towards the conveying chamber 4, so that part of the sprayed air can enter the conveying chamber 4 to cool the mixed wood shavings and help with the discharge of the wood shavings.

[0037] Furthermore, in order to apply glue to the second side of the wood shavings, the second glue application tube assembly includes two conveyor pipes 9 installed on the conveyor belt 7. The conveyor pipes 9 are equipped with atomizing nozzles 91 that can spray glue onto the wood shavings on the conveyor belt 7. When the wood shavings fall onto the conveyor belt 7, the atomizing nozzles 91 apply glue to the wood shavings.

[0038] Furthermore, in order to move the wood shavings towards the discharge port inside the conveying chamber 4, the conveying chamber 4 is equipped with a spiral blade 41, and one end of the spiral blade 41 is connected to the annular partition 21. After the wood shavings are coated with glue, the conveyor belt 7 transports the wood shavings into the conveying chamber 4. When the wood shavings fall, they are impacted and dispersed. During the rotation of the roller 2, the spiral blade 41 is driven to rotate. The dispersed wood shavings move towards the discharge port and are discharged under the guiding action of the spiral blade 41. When the dispersed wood shavings rotate inside the conveying chamber 4, they can be stirred and mixed, so that the glue and wood shavings are mixed more evenly.

[0039] Furthermore, a feed hopper is provided on the support frame 1 corresponding to the starting end of the conveyor belt 7 for feeding wood shavings; and a discharge port is provided on the lower side of another support frame 1 for discharging wood shavings after applying glue.

[0040] Compared to the traditional method of applying glue by rotating the object, the double-sided sequential glue application method of this invention does not generate heat during the glue application process, thus preventing the glue from solidifying prematurely. Furthermore, the entire process is kept air-cooled, which can prevent the wood shavings from overheating.

[0041] The three-way valve 64 used in this invention is a commonly used electronic component in the prior art. Its working method and circuit structure are well known technologies and will not be described in detail here. The three-way valve 64 is electrically connected to an external switch.

[0042] When using:

[0043] 1. Preparations:

[0044] 1.1 The gears are connected to the gears on the external drive motor via a chain, and the external drive motor can drive the geared roller 2 to rotate via the gears and chain;

[0045] 1.2 Connect the discharge pipe of the glue spraying equipment to the glue conveying chamber and the conveying pipe 9 of the dual-chamber pipe 8 so that both the glue spraying nozzle 82 and the atomizing nozzle 91 can spray atomized glue.

[0046] 1.3 Connect the air inlet pipe of the negative pressure device to the connecting pipe. The negative pressure device draws air from the inside of the negative pressure chamber 51 through the connecting pipe, the ring pipe 62 and the air extraction pipe 61, and allows the air inside the roller 2 to enter the inside of the negative pressure chamber 51. Under the action of negative pressure, the wood shavings can be adsorbed to the part of the glue coating chamber 3 with negative pressure holes 31.

[0047] 1.4 Connect the external air pump to the ventilation chamber of the dual-chamber pipe 8. The external air pump can dispense gas through the jet nozzle 81.

[0048] 2. Feeding:

[0049] 2.1. Pour the wood shavings into the roller 2 through the feed hopper. At this time, the wood shavings are located at the end of the glue coating chamber 3.

[0050] 2.2 Control the external air pump to make the air nozzle 81 spray air; at this time, the roller 2 rotates and drives the wood shavings to rotate. As the air sprayed by the air nozzle 81 flows into the conveying chamber 4, when the roller 2 drives the wood shavings to the moving height, the air sprayed by the air nozzle 81 blows off the wood shavings on the inner wall of the roller 2 and causes the protective device to move towards the conveying chamber 4. This can achieve a uniform distribution of wood shavings inside the roller 2 and air-cool the wood shavings to prevent the wood shavings from overheating and causing the glue to solidify during the application of glue.

[0051] 3. Wood shavings enhancement:

[0052] 3.1 Control the negative pressure equipment to work. At this time, when the roller 2 rotates, the wood shavings are adsorbed onto the inner wall of the glue coating chamber 3.

[0053] 3.2 As the wood shavings rotate with the drum 2, they pass through the air nozzle 81 and the glue spray nozzle 82 in sequence, and reach the top of the conveyor belt 7. When the wood shavings pass through the air nozzle 81, the air sprayed by the air nozzle 81 cools the wood shavings and removes the wood shavings that stick together and overlap, as well as the wood shavings that are not firmly attached.

[0054] 4. Apply glue to wood shavings:

[0055] 4.1 When the wood shavings pass through the glue spray nozzle 82, the glue spray nozzle 82 sprays glue onto the exposed surface of the wood shavings.

[0056] 4.2. Because there are certain gaps between the wood shavings and within the wood shavings themselves, they have a certain degree of air permeability. Under negative pressure, the sprayed adhesive will enter the gaps between the wood shavings and the voids within the wood shavings themselves, thereby improving the adhesive application effect.

[0057] 4.3 When the wood shavings move directly above the conveyor belt 7, adjust the three-way valve 64 to connect the air inlet pipe 63 with the negative pressure chamber 51 through the air extraction pipe 61. At this time, the negative pressure chamber 51 at the top is in a negative pressure state, and the wood shavings fall automatically onto the conveyor belt 7 under the action of gravity. Since the wood shavings are coated with glue facing downwards and there is some overlap between the wood shavings, the wood shavings are not easy to flip up and down during the falling process.

[0058] 4.4 After the wood shavings fall onto the conveyor belt 7, the atomizing nozzle 91 applies adhesive to the wood shavings.

[0059] 5. Wood shavings conveying:

[0060] 5.1 After the wood shavings are coated with glue, the conveyor belt 7 transports the wood shavings into the conveyor chamber 4, and the wood shavings are scattered by impact when they fall.

[0061] 5.2 During the rotation of the drum 2, the spiral blades 41 are driven to rotate. The shavings after being dispersed move towards the discharge port and are discharged under the guiding action of the spiral blades 41.

[0062] 5.3 The shavings, after being dispersed, can be stirred and mixed inside the conveying chamber 4 as they rotate, making the glue and shavings mix more evenly;

[0063] 5.4. Part of the gas ejected from the jet nozzle 81 enters the conveying chamber 4, thereby air-cooling the shavings being stirred and preventing the temperature of the shavings from rising during the stirring process, which would cause the glue to solidify.

[0064] This invention can sequentially lift an appropriate amount of wood shavings for double-sided gluing, and then transport, disperse, mix, and discharge the glued shavings. This improves the gluing effect on the shavings, thereby improving the quality of the boards. Furthermore, the entire process continuously cools the shavings with air, preventing the shavings from overheating and causing the glue to solidify prematurely. It also avoids crushing the shavings and avoids multiple gluing processes, reducing glue waste and improving work efficiency.

[0065] All parts not disclosed in this invention are prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A particleboard preparation double-sided adhesive coating device, comprising a horizontally rotating roller (2), wherein both ends of the roller (2) are rotatably supported by support frames (1), characterized in that: The roller (2) is provided with an annular partition (21) inside, which divides the inner cavity of the roller (2) into a glue-applying cavity (3) and a conveying cavity (4). Several sets of evenly distributed negative pressure holes (31) are opened on the side wall of the roller (2) corresponding to the glue-applying cavity (3). A negative pressure cover (5) is provided on the outer wall of the roller (2) corresponding to the negative pressure holes (31). A negative pressure cavity (51) corresponding to the negative pressure holes (31) is opened inside the negative pressure cover (5). The outer side of the negative pressure cover (5) is sealed and rotated in the middle. An annular sealing plate (6) is provided, and several suction pipes (61) are provided on the annular sealing plate (6). When the roller (2) rotates from the bottom to the top under the suction state of the several suction pipes (61), the negative pressure chamber (51) can be kept in a negative pressure state. An annular pipe (62) is sleeved on the outside of the negative pressure cover (5). The annular sealing plate (6) is connected to two support frames (1) through a connecting seat. The air outlet end of the suction pipe (61) is connected to the annular pipe (62), and the annular pipe (62) is provided with a connecting pipe connected to an external negative pressure pump. The upper part of the glue coating chamber (3) is provided with a conveyor belt (7), and the end of the conveyor belt (7) extends into the conveying chamber (4). The side of the conveyor belt (7) is provided with a first glue coating tube group, and the upper side of the conveyor belt (7) is provided with a second glue coating tube group.

2. The particleboard preparation double-sided adhesive coating equipment according to claim 1, characterized in that: An air inlet pipe (63) is provided in the middle of the top air extraction pipe (61), and a three-way valve (64) is provided at the corresponding part of the air extraction pipe (61) and the air inlet pipe (63).

3. The particleboard preparation double-sided adhesive coating equipment according to claim 1, characterized in that: The first glue-applying tube assembly includes a double-cavity pipe (8) installed on the side of the conveyor belt (7). The double-cavity pipe (8) includes a lower ventilation cavity and an upper glue delivery cavity. The side of the double-cavity pipe (8) corresponding to the ventilation cavity is provided with uniformly distributed air nozzles (81). The side of the double-cavity pipe (8) corresponding to the glue delivery cavity is provided with uniformly distributed glue spray nozzles (82). When the roller (2) rotates, it drives the wood shavings to pass through the air nozzles (81) and glue spray nozzles (82) in sequence.

4. The particleboard preparation double-sided adhesive coating equipment according to claim 3, characterized in that: The air outlet of the jet nozzle (81) is inclined toward the delivery chamber (4).

5. The particleboard preparation double-sided adhesive coating equipment according to claim 1, characterized in that: The second adhesive applicator assembly includes two conveyor pipes (9) installed on the conveyor belt (7), and the conveyor pipes (9) are equipped with atomizing nozzles (91) capable of spraying adhesive onto the wood shavings on the conveyor belt (7).

6. The particleboard preparation double-sided adhesive coating equipment according to claim 1, characterized in that: The inside of the conveying cavity (4) is provided with a spiral blade (41), and one end of the spiral blade (41) is connected to the annular partition (21).

7. The particleboard preparation double-sided adhesive coating equipment according to claim 1, characterized in that: A feed hopper is provided on the support frame (1) corresponding to the starting end of the conveyor belt (7), and a discharge port is provided on the lower side of the other support frame (1).

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