Gluing device and edge banding machine thereof

Abstract

The utility model relates to the technical field of edge banding machine equipment, in particular to a gluing device and an edge banding machine thereof.The gluing device comprises a gluing base, a gluing roller mechanism and a glue outlet shaft mechanism are movably connected to the output end of the gluing base in an inserted mode, and a glue door is formed in a gap between the gluing roller mechanism and the glue outlet shaft mechanism; the glue outlet shaft mechanism is in driving connection with a gap adjusting mechanism which is used for adjusting the size of the glue door; the heating mechanism is detachably and electrically connected with the valve seat mechanism, and the heating end of the heating mechanism is detachably connected with the gluing seat and the gluing roller mechanism in an inserted mode. The device is convenient to disassemble and assemble, quick to maintain and capable of reducing the influence of fault shutdown on the production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of edge banding machine equipment, and more specifically, to an adhesive applicator and the same. Background Technology

[0002] PUR hot melt adhesive is an environmentally friendly adhesive with adjustable rigidity and toughness, excellent bonding strength, heat resistance, moisture resistance, chemical corrosion resistance, and aging resistance. PUR hot melt adhesive does not contain formaldehyde, benzene, or other toxic and harmful volatile chemicals, making it highly favored in various industrial applications. In edge sealing processes, the application of PUR hot melt adhesive is becoming increasingly widespread. PUR self-cleaning glue pots, as a type of glue application device, demonstrate significant advantages over traditional EVA glue pots in terms of adhesive performance, ease of operation, production efficiency, edge sealing quality, adaptability, and flexibility. However, currently available PUR self-cleaning glue pots still present challenges in terms of disassembly and assembly when the heating element malfunctions or wears out and requires repair. This necessitates professional repair personnel for maintenance or replacement, hindering smooth maintenance work and consequently reducing production efficiency. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies where the heating parts are inconvenient to repair or replace, and to provide a gluing device and its edge sealing machine that are easy to disassemble and assemble, quick to repair, and can reduce the impact of downtime on production efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A glue-applying device is provided, including a glue-applying base, an output end of which is movably connected to a glue-applying roller mechanism and a glue-dispensing shaft mechanism, the gap between the glue-applying roller mechanism and the glue-dispensing shaft mechanism forming a glue gate, the glue-dispensing shaft mechanism being driven to connect a gap adjustment mechanism for adjusting the size of the glue gate; it also includes a valve seat mechanism and a heating mechanism detachably electrically connected to the valve seat mechanism, the heating end of the heating mechanism being detachably connected to the glue-applying base and the glue-applying roller mechanism.

[0006] This utility model includes a glue application device. Hot melt glue can flow out from a glue gate formed by the gap between the glue application roller mechanism and the glue dispensing shaft mechanism and be used for edge sealing. The gap adjustment mechanism can be used to adjust the size of the glue gate gap by adjusting the glue dispensing shaft mechanism, thereby controlling the glue dispensing amount. The heating end of the heating mechanism is detachably connected to the glue application seat and the glue application roller mechanism, which facilitates the quick assembly and disassembly of the heating mechanism and facilitates the maintenance or replacement of the heating mechanism. The valve seat mechanism is used to connect to the power supply. The detachable electrical connection between the valve seat mechanism and the heating mechanism also facilitates the quick assembly and disassembly of the heating mechanism, enabling the heating mechanism to be quickly powered on and operated, thereby reducing the impact of downtime on production efficiency.

[0007] Preferably, the heating mechanism includes a mounting base, and the heating end of the heating mechanism includes a first heating element and a second heating element connected to the mounting base. The first heating element is detachably inserted into the glue-applying roller mechanism, and the second heating element is detachably inserted into the glue-applying base. A conductor is inserted into the mounting base, and the first end of the conductor is electrically connected to the first heating element and the second heating element within the mounting base. The valve seat mechanism includes a conductor seat, and the second end of the conductor is detachably electrically connected to the conductor seat. The conductor seat is used for connection to a power source.

[0008] Preferably, the mounting base has a receiving cavity, and the first terminals of the first heating element and the second heating element are both located in the receiving cavity, as are the second terminals of the conductor. The first terminals and the second terminals are electrically connected. The receiving cavity is filled with insulating adhesive.

[0009] Preferably, the valve seat mechanism includes a valve seat body connected to the outer surface of the glue-applying seat, and the conductor seat is inserted into the valve seat body; the valve seat body has a first glue inlet channel, and the glue-applying seat has a second glue inlet channel, the first glue inlet channel being connected to the output end of the glue-applying seat through the second glue inlet channel; the second glue inlet channel is provided with an on / off control element, and the fixed end of the on / off control element is connected to the valve seat body.

[0010] Preferably, the first glue inlet channel is provided with a one-way control component, and the fixed end of the one-way control component is connected to the valve seat body.

[0011] Preferably, the glue dispensing shaft mechanism includes a glue dispensing shaft and a rocker arm connected to the glue dispensing shaft. The glue dispensing shaft is rotatably inserted into the output end of the glue applicator, and the glue dispensing shaft has a cut surface. The gap adjustment mechanism includes a cylinder connected to the glue applicator and a push rod connected to the drive end of the cylinder. The push rod is movably connected to the rocker arm.

[0012] Preferably, the glue-applying roller mechanism includes a glue-applying roller and a support base. The glue-applying roller is rotatably inserted into the output end of the glue-applying base via the support base. The glue-applying roller has a first slot for inserting the heating end. The axial direction of the glue-applying roller is parallel to the axial direction of the glue-dispensing shaft, and the gap between the glue-applying roller and the glue-dispensing shaft forms the glue gate.

[0013] Preferably, the glue-applying base has a recessed portion for forming the output end, and the glue-applying roller mechanism and the glue-dispensing shaft mechanism are movably inserted into the recessed portion. A guide plate is also connected to the recessed portion. The glue-applying base has several second slots for inserting the heating end.

[0014] Preferably, a guide plate is connected to the glue application base, and the guide plate is located near the glue gate.

[0015] This utility model also provides an edge banding machine, including the above-mentioned glue application device.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The detachable connection between the heating end of the heating mechanism and the glue application seat and glue application roller mechanism facilitates quick assembly and disassembly of the heating mechanism, and makes it easy to repair or replace the heating mechanism; the valve seat mechanism is used to connect to the power supply, and the detachable electrical connection between the valve seat mechanism and the heating mechanism also facilitates quick assembly and disassembly of the heating mechanism, enabling the heating mechanism to be powered on and operated quickly, and reducing the impact of downtime on production efficiency.

[0018] 2. The electrical connection between the first terminal of each heating element and the second terminal of the conductor element within the accommodating cavity, and the detachable electrical connection between the conductor seat and the conductor element, can prevent short circuits caused by pressure loss in the circuit and avoid unnecessary safety accidents.

[0019] 3. The cavity inside the mounting base is filled with insulating glue, which can improve the insulation performance, prevent the insulation protection from being damaged due to high temperature, and reduce the risk of short circuit in the heating mechanism. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of an adhesive coating device according to the present invention from a frontal view.

[0021] Figure 2 This is a structural schematic diagram of a glue-applying device from a rear view perspective according to this utility model;

[0022] Figure 3 This is a schematic diagram of the heating mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the valve seat mechanism of this utility model;

[0024] Figure 5 This is a top view of the structure of the adhesive application device of this utility model;

[0025] Figure 6 for Figure 5 Sectional view of AA;

[0026] Figure 7 for Figure 5 Sectional view of BB;

[0027] Figure 8This is a schematic diagram of the adhesive applicator and gap adjustment mechanism of this utility model;

[0028] Figure 9 This is a schematic diagram of the glue dispensing shaft mechanism and the gap adjustment mechanism of this utility model;

[0029] Figure 10 This is a schematic diagram of the adhesive roller mechanism of this utility model.

[0030] In the attached diagram: 100, glue applicator; 101, upper glue applicator; 102, connecting seat; 103, lower glue applicator; 110, second glue inlet channel; 120, on / off control component; 130, recess; 140, guide plate; 150, second slot; 160, movable cavity; 200, glue applicator roller mechanism; 210, glue applicator roller; 211, first slot; 220, support seat; 230, bearing; 240, copper sleeve; 300, glue outlet shaft mechanism; 310, glue outlet shaft; 311, cut surface; 320, swing arm; 321, waist groove; 400, gap adjustment. 410. Cylinder; 420. Push rod; 430. Pin; 500. Valve seat mechanism; 510. Conductor seat; 520. Valve seat body; 521. First glue inlet channel; 530. One-way control component; 540. Insertion hole; 550. Power cord; 600. Heating mechanism; 610. First heating element; 620. Second heating element; 630. Conductor component; 631. Second terminal block; 640. Mounting base; 641. Receiving cavity; 650. First terminal block; 660. Cover; 700. Guide plate; 710. Recessed guide surface. Detailed Implementation

[0031] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0032] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0033] Example 1

[0034] like Figures 1 to 8 The first embodiment of the glue application device of this utility model is shown, including a glue application base 100. A glue application roller mechanism 200 and a glue dispensing shaft mechanism 300 are movably connected to the output end of the glue application base 100. The gap between the glue application roller mechanism 200 and the glue dispensing shaft mechanism 300 forms a glue gate. The glue dispensing shaft mechanism 300 is driven to be connected to a gap adjustment mechanism 400, which is used to adjust the size of the glue gate. The device also includes a valve seat mechanism 500 and a heating mechanism 600 that is detachably electrically connected to the valve seat mechanism 500. The heating end of the heating mechanism 600 is detachably connected to the glue application base 100 and the glue application roller mechanism 200.

[0035] Hot melt adhesive can flow out from the glue gate formed by the gap between the glue application roller mechanism 200 and the glue dispensing shaft mechanism 300 and be used for edge sealing. The gap adjustment mechanism 400 can be used to adjust the gap size of the glue gate by adjusting the glue dispensing shaft mechanism 300, thereby controlling the glue dispensing amount. The heating end of the heating mechanism 600 is detachably connected to the glue application seat 100 and the glue application roller mechanism 200, which facilitates the quick assembly and disassembly of the heating mechanism 600 and facilitates the maintenance or replacement of the heating mechanism 600. The valve seat mechanism 500 is used to connect to the power supply. The detachable electrical connection between the valve seat mechanism 500 and the heating mechanism 600 also facilitates the quick assembly and disassembly of the heating mechanism 600, enabling the heating mechanism 600 to be quickly powered on and operated, thereby reducing the impact of downtime on production efficiency.

[0036] like Figures 1 to 5 As shown, the heating mechanism 600, valve seat mechanism 500, and glue application seat 100 are installed sequentially from top to bottom. In this embodiment, the heating mechanism 600 includes a mounting base 640. The heating end of the heating mechanism 600 includes a first heating element 610 and a second heating element 620. Both the first heating element 610 and the second heating element 620 are connected to the mounting base 640. The first heating element 610 extends from the bottom of the mounting base 640 and is detachably inserted into the glue application roller mechanism 200. The second heating element 620 extends from the bottom of the mounting base 640 and is detachably inserted into the glue application seat 100. A conductor 630 is also inserted into the mounting base 640. The first end of the conductor 630 is located inside the mounting base 640 and is electrically connected to the first heating element 610 and the second heating element 620 inside the mounting base 640. The second end of the conductor 630 extends from the bottom of the mounting base 640.

[0037] like Figure 3 and Figure 5As shown, in this embodiment, the mounting base 640 has a receiving cavity 641. The first terminals 650 of the first heating element 610 and the second heating element 620 are both located in the receiving cavity 641, and the second terminal 631 of the conductor 630 is also located in the receiving cavity 641. The first terminals 650 and the second terminals 631 are electrically connected. The receiving cavity 641 is filled with insulating glue. The arrangement of the first terminals 650 and the second terminals 631 being located in the receiving cavity 641 can avoid short circuits caused by pressure loss of the circuit, thus avoiding unnecessary safety accidents. The filling with insulating glue can improve the insulation performance of the heating mechanism 600, avoid insulation damage caused by high temperature, and reduce the risk of short circuits in the heating mechanism 600. It should be noted that the receiving cavity 641 can be a closed cavity that is not connected to the outside, or it can be an open cavity that is connected to the outside, with a cover 660 provided at the open part.

[0038] like Figure 4 As shown, the valve seat mechanism 500 includes a valve seat body 520 connected to the top of the adhesive base 100, and a conductor base 510 inserted into the top of the valve seat body 520. The second end of the conductor 630 is detachably electrically connected to the conductor base 510. A power cord 550 is connected to the conductor base 510, allowing the conductor base 510 to be connected to a power source via the power cord 550. In this embodiment, the valve seat body 520 and the mounting base 640 are detachably connected; specifically, the valve seat body 520 and the mounting base 640 can be connected by bolts. The conductor 630 is a copper rod, and the conductor base 510 is a copper rod plug with an insulating shell.

[0039] like Figure 7 As shown, a first glue inlet channel 521 is provided inside the valve seat body 520, and a second glue inlet channel 110 is provided inside the glue application seat 100. A one-way control component 530 is connected to the first end of the first glue inlet channel 521, and the second end of the first glue inlet channel 521 is connected to the first end of the second glue inlet channel 110. The second end of the second glue inlet channel 110 is connected to the output end of the glue application seat 100. The fixed end of the one-way control component 530 is connected to the outer wall of the valve seat body 520. An on / off control component 120 is provided on the second glue inlet channel 110, and the fixed end of the on / off control component 120 is inserted into the valve seat body 520. In this embodiment, the one-way control component 530 is a one-way valve, and the on / off control component 120 is an air valve. The air passage of the air valve extends from the valve seat body 520, as shown... Figure 2 As shown.

[0040] like Figure 1 , Figure 2 and Figure 6As shown, a recessed portion 130 for forming an output end is provided on one side of the glue-applying base 100. The glue-applying roller mechanism 200 and the glue-discharging shaft mechanism 300 are movably inserted into the recessed portion 130. The second end of the second glue inlet channel 110 is connected to the recessed portion 130. A guide plate 140 is also connected to the recessed portion 130.

[0041] Specifically, such as Figure 2 As shown, the adhesive applicator 100 includes an upper adhesive applicator 101, a connecting seat 102, and a lower adhesive applicator 103 arranged sequentially from top to bottom. The upper adhesive applicator 101, connecting seat 102, and lower adhesive applicator 103 are integrally formed. A recessed portion 130 is provided at the connecting seat 102, giving the outer contour of the adhesive applicator 100 a C-shaped structure. Specifically, a guide plate 140 is installed on the lower adhesive applicator 103, and the guide plate 140 has a semi-circular structure. In this embodiment, the valve seat body 520 is connected to the upper adhesive applicator 101.

[0042] like Figure 3 and Figure 8 As shown, the glue applicator 100 has several second slots 150 for inserting the heating element, and the second slots 150 are connected to the top of the glue applicator 100. Figure 4 As shown, the valve seat body 520 is also provided with a plurality of insertion holes 540 extending vertically through the valve seat body 520. The first heating element 610 includes a first heating tube, and the second heating element 620 includes a second heating tube. Both the first and second heating tubes are vertically arranged. The first heating tube passes through the insertion hole 540 at the corresponding position and is inserted into the glue application roller mechanism 200. The second heating tube passes through the insertion hole 540 at the corresponding position and is inserted into the second slot 150. The insertion holes 540 allow the heating tubes to also heat the first glue inlet channel 521 inside the valve seat body 520.

[0043] In this embodiment, the controller can be used to coordinate the on / off control of the unidirectional control element 530 and the on / off control element 120, and can also be used to control the gap adjustment mechanism 400.

[0044] The working principle of the adhesive application device in this embodiment is as follows:

[0045] Connect the power cord 550 to the power supply to energize the first and second heating elements. Then, the hot melt adhesive passes through the one-way control component 530 and sequentially enters the first adhesive inlet channel 521 and the second adhesive inlet channel 110. The on / off control component 120 can be used to control the amount of adhesive flowing to the glue gate. The size adjustment of the glue gate can be achieved by adjusting the glue outlet shaft mechanism 300 through the gap adjustment mechanism 400. The heating mechanism 600 can be repeatedly inserted and removed. When the heating mechanism 600 malfunctions or needs to be replaced after long-term use, the bolts between the valve seat body 520 and the mounting base 640 can be removed to separate the entire heating mechanism 600 from the adhesive applicator. This eliminates the need for professional maintenance personnel and improves replacement efficiency.

[0046] Example 2

[0047] This embodiment is a second embodiment of an adhesive application device, which is similar to the first embodiment. Figure 1 , Figure 2 , Figure 6 , Figures 8 to 10 As shown, the difference lies in that the glue dispensing shaft mechanism 300 includes a glue dispensing shaft 310 and a rocker arm 320 connected to the glue dispensing shaft 310. The glue dispensing shaft 310 is rotatably inserted into the output end of the glue applicator 100, and the glue dispensing shaft 310 has a cut surface 311. The gap adjustment mechanism 400 includes a cylinder 410 connected to the glue applicator 100 and a push rod 420 connected to the drive end of the cylinder 410. The push rod 420 is movably connected to the rocker arm 320. Figure 2 and Figure 6 As shown, the upper and lower ends of the glue dispensing shaft 310 are rotatably connected to the upper glue dispensing seat 101 and the lower glue dispensing seat 103, respectively.

[0048] like Figure 8 and Figure 9 As shown, the swing rod 320 has a waist groove 321, and the end of the push rod 420 is connected to a pin 430, which is slidably connected in the waist groove 321. The upper glue-applying seat 101 has an active cavity 160 for providing movement space for the push rod 420 and the swing rod 320. The fixed end of the cylinder 410 is connected to the upper glue-applying seat 101. The cylinder 410 controls the extension and retraction of the push rod 420, which causes the swing rod 320 to swing and drive the glue-dispensing shaft 310 to rotate, so that the cut surface 311 can move away from or closer to the glue-applying roller mechanism 200, thereby adjusting the size of the glue gate gap.

[0049] like Figure 1 , Figure 2 , Figure 6 and Figure 10As shown, the glue-applying roller mechanism 200 includes a glue-applying roller 210 and a support base 220. The glue-applying roller 210 is rotatably inserted into the output end of the glue-applying base 100 via the support base 220. The glue-applying roller 210 has a first slot 211 for inserting a heating element. Specifically, a first heating element passes through a corresponding insertion hole 540 and is inserted into the first slot 211. The axial direction of the glue-applying roller 210 is parallel to the axial direction of the glue-dispensing shaft 310, and the gap between the glue-applying roller 210 and the glue-dispensing shaft 310 forms a glue gate. Figure 2 , Figure 6 and Figure 10 As shown, copper sleeves 240 are fitted onto the upper end and near the lower end of the coating roller 210. The upper end of the coating roller 210 is connected to the upper coating seat 101 via the copper sleeves 240, and the lower end of the coating roller 210 is connected to the lower coating seat 103 via the copper sleeves 240. A bearing 230 is located inside the support seat 220, which is connected to the lower end of the coating roller 210 via the bearing 230. The support seat 220 is also connected to the bottom of the lower coating seat 103. It should be noted that the lower end of the coating roller 210 extends through the coating seat 100; specifically, the lower end of the coating roller 210 extends out of the lower coating seat 103, allowing it to be connected to a rotary drive mechanism to drive the coating roller 210 to rotate. This rotary drive mechanism can be a motor.

[0050] In this embodiment, the glue-applying roller mechanism 200 and the gap adjustment mechanism 400 can be controlled in a coordinated manner by setting a controller.

[0051] The working principle of the adhesive application device in this embodiment is as follows:

[0052] The cylinder 410 controls the extension and retraction of the push rod 420, which in turn causes the swing rod 320 to oscillate and drive the glue dispensing shaft 310 to rotate, allowing the cut surface 311 to move away from or closer to the coating roller 210. During the rotation of the glue dispensing shaft 310, when the cut surface 311 of the glue dispensing shaft 310 approaches the coating roller 210, the glue gate gap increases, which can increase the glue feed rate; when the arc surface of the glue dispensing shaft 310 approaches the coating roller 210, the glue gate gap decreases, which can reduce the glue feed rate.

[0053] Example 3

[0054] This embodiment is a third embodiment of an adhesive application device. This embodiment is similar to that of Embodiment 1 or 2, such as... Figure 1 and Figure 8As shown, the difference lies in that a guide plate 700 is connected to the glue application base 100, and the guide plate 700 is located near the glue gate. The guide plate 700 is used to guide the board to be glued. Specifically, one end of the guide plate 700 is connected to the outer wall of the connecting base 102, and the other end of the guide plate 700 has a recessed guide surface 710. The recessed guide surface 710 is located near and facing the glue gate, and the board to be glued can be inserted along the recessed guide surface 710, which can provide a guiding effect for the glue application of the board.

[0055] Example 4

[0056] This embodiment is an example of an edge banding machine, including an adhesive applicator as described in any one of embodiments one to three.

[0057] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A glue-applying device, characterized in that, The device includes a glue applicator (100), the output end of which is movably connected to a glue applicator roller mechanism (200) and a glue dispensing shaft mechanism (300). The gap between the glue applicator roller mechanism (200) and the glue dispensing shaft mechanism (300) forms a glue gate. The glue dispensing shaft mechanism (300) is driven to connect a gap adjustment mechanism (400), which is used to adjust the size of the glue gate. The device also includes a valve seat mechanism (500) and a heating mechanism (600) that is detachably electrically connected to the valve seat mechanism (500). The heating end of the heating mechanism (600) is detachably connected to the glue applicator (100) and the glue applicator roller mechanism (200).

2. The adhesive applicator according to claim 1, characterized in that, The heating mechanism (600) includes a mounting base (640). The heating end of the heating mechanism (600) includes a first heating element (610) and a second heating element (620) connected to the mounting base (640). The first heating element (610) is detachably inserted into the glue coating roller mechanism (200), and the second heating element (620) is detachably inserted into the glue coating seat (100). A conductor (630) is inserted into the mounting base (640). The first end of the conductor (630) is electrically connected to the first heating element (610) and the second heating element (620) within the mounting base (640). The valve seat mechanism (500) includes a conductor seat (510). The second end of the conductor (630) is detachably electrically connected to the conductor seat (510). The conductor seat (510) is used to connect to a power source.

3. The adhesive applicator according to claim 2, characterized in that, The mounting base (640) is provided with a receiving cavity (641). The first terminals (650) of the first heating element (610) and the second heating element (620) are both located in the receiving cavity (641). The second terminal (631) of the conductor (630) is also located in the receiving cavity (641). The first terminal (650) and the second terminal (631) are electrically connected. The receiving cavity (641) is filled with insulating glue.

4. The adhesive applicator according to claim 2, characterized in that, The valve seat mechanism (500) includes a valve seat body (520) connected to the outer surface of the glue applicator (100), and the conductor seat (510) is inserted into the valve seat body (520). The valve seat body (520) is provided with a first glue inlet channel (521), and the glue applicator (100) is provided with a second glue inlet channel (110). The first glue inlet channel (521) is connected to the output end of the glue applicator (100) through the second glue inlet channel (110). The second glue inlet channel (110) is provided with an on / off control element (120), and the fixed end of the on / off control element (120) is connected to the valve seat body (520).

5. The adhesive applicator according to claim 4, characterized in that, The first glue inlet channel (521) is provided with a one-way control element (530), and the fixed end of the one-way control element (530) is connected to the valve seat body (520).

6. The adhesive applicator according to any one of claims 1 to 5, characterized in that, The dispensing shaft mechanism (300) includes a dispensing shaft (310) and a rocker arm (320) connected to the dispensing shaft (310). The dispensing shaft (310) is rotatably inserted into the output end of the glue applicator (100). The dispensing shaft (310) has a cut surface (311). The gap adjustment mechanism (400) includes a cylinder (410) connected to the glue applicator (100) and a push rod (420) connected to the drive end of the cylinder (410). The push rod (420) is movably connected to the rocker arm (320).

7. The adhesive applicator according to claim 6, characterized in that, The glue-applying roller mechanism (200) includes a glue-applying roller (210) and a support base (220). The glue-applying roller (210) is rotatably inserted into the output end of the glue-applying base (100) via the support base (220). The glue-applying roller (210) is provided with a first slot (211) for inserting the heating end. The axial direction of the glue-applying roller (210) is parallel to the axial direction of the glue-dispensing shaft (310), and the gap between the glue-applying roller (210) and the glue-dispensing shaft (310) forms the glue gate.

8. The adhesive applicator according to any one of claims 1 to 5, characterized in that, The glue-applying base (100) is provided with a recess (130) for forming the output end. The glue-applying roller mechanism (200) and the glue-dispensing shaft mechanism (300) are movably inserted into the recess (130). A guide plate (140) is also connected to the recess (130). The glue-applying base (100) is provided with a plurality of second slots (150) for inserting the heating end.

9. The adhesive applicator according to any one of claims 1 to 5, characterized in that, A guide plate (700) is connected to the glue application base (100), and the guide plate (700) is located near the glue gate.

10. An edge banding machine, characterized in that, Includes the adhesive applicator as described in any one of claims 1 to 9.

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