An energy-saving hot melt glue gun that prevents glue backflow

Abstract

This utility model discloses an energy-saving hot melt glue gun that prevents glue backflow, including a glue gun housing and a glue stick. A slide rail is fixedly connected to the inner wall of the glue gun housing, and a retaining ring is slidably connected to the inner wall of the slide rail. A hot melt tube is fixedly connected to the inner wall of the glue gun housing, and a connecting pipe is fixedly connected to the inlet end of the hot melt tube. A glue nozzle is fixedly connected to the inlet end of the hot melt tube. A PTC heater is fixedly connected to the lower surface of the hot melt tube. The glue stick extends into the hot melt tube through the retaining ring and the connecting pipe. A one-way flow mechanism is provided inside the hot melt tube, which includes a first partition, a second partition, a slide rod, a sealing plate, and a spring. This utility model can prevent glue backflow, reduce glue waste, and prevent glue backflow from clogging the connecting pipe, thus extending the service life of the glue gun.

Description

Technical Field

[0001] This utility model relates to the field of hot melt glue gun technology, specifically an energy-saving hot melt glue gun that can prevent glue backflow. Background Technology

[0002] Traditional hot melt glue guns suffer from numerous problems during use. Regarding glue flow control, the lack of an effective unidirectional flow structure means that when the glue stick is stopped, residual liquid glue in the hot melt tube easily flows back under gravity or internal pressure. This not only wastes glue but can also clog the glue gun, potentially causing internal damage and affecting its subsequent normal use, even requiring frequent cleaning or maintenance. Therefore, those skilled in the art have developed an energy-saving hot melt glue gun that prevents glue backflow to address the problems mentioned in the background. Utility Model Content

[0003] The purpose of this invention is to provide an energy-saving hot melt glue gun that can prevent glue backflow, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An energy-saving hot melt glue gun that prevents glue backflow includes a glue gun housing and a glue stick. A slide rail is fixedly connected to the inner wall of the glue gun housing, and a retaining ring is slidably connected to the inner wall of the slide rail. A hot melt tube is fixedly connected to the inner wall of the glue gun housing, and a connecting pipe is fixedly connected to the inlet end of the hot melt tube. A glue nozzle is fixedly connected to the inlet end of the hot melt tube. A PTC heater is fixedly connected to the lower surface of the hot melt tube. The glue stick extends into the hot melt tube through the retaining ring and the connecting pipe. A one-way flow mechanism is provided inside the hot melt tube. The one-way flow mechanism includes a first partition, a second partition, a slide rod, a sealing plate, and a spring.

[0006] Furthermore, a first partition and a second partition are fixedly connected to the inner wall of the hot melt tube. Both the first partition and the second partition have glue passage holes on their surfaces, forming a glue passage cavity.

[0007] Furthermore, a sliding rod is slidably connected between the first partition and the second partition, and a sealing plate for sealing the glue passage cavity is fixedly connected to the surface of the sliding rod, with a sealing gasket fixedly connected to the side wall of the sealing plate.

[0008] Furthermore, a spring is fixedly connected to the side wall of the second partition, the spring is sleeved on the slide rod, and one end of the spring is fixedly connected to the side wall of the sealing plate.

[0009] Furthermore, a push rod and a trigger are rotatably connected to the inner wall of the glue gun housing, and a connecting rod is rotatably connected between the push rod and the trigger. One end of the push rod is rotatably connected to the inner wall of the catch ring, and the protruding end of the push rod abuts against the glue stick.

[0010] Furthermore, a tension spring is fixedly connected to the inner wall of the glue gun housing, and one end of the tension spring is fixedly connected to the side wall of the connecting rod.

[0011] Furthermore, the surface of the glue gun housing is provided with uniformly arranged heat dissipation holes.

[0012] By adopting the above technical solution

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. A one-way flow mechanism consisting of a first partition, a second partition, a slide bar, a sealing plate, and a spring is used to control the opening and closing of the sealing plate by pressure difference. When the glue stick is pushed forward, the channel is opened to allow the glue to flow out smoothly. When the glue supply stops, the channel is quickly closed to prevent glue backflow, reduce glue waste, and prevent glue backflow from clogging the connecting pipe, thus extending the service life of the glue gun. The PTC heater has an automatic constant temperature characteristic, which can accurately control the heating temperature and avoid energy waste caused by overheating. The heat dissipation holes on the glue gun housing assist in heat dissipation, so that the PTC heater can be maintained at an efficient operating temperature, further reducing energy consumption.

[0015] 2. The sliding connection between the slide rail and the locking ring, and the linkage between the push rod and the trigger, form a trigger linkage mechanism, which makes the glue stick advance process smooth and stable. Users can precisely adjust the glue dispensing amount by controlling the trigger force to meet the needs of different scenarios. The tension spring ensures that the trigger resets quickly, improving the user experience. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of an energy-saving hot melt glue gun that can prevent glue backflow;

[0017] Figure 2 This is a schematic diagram of the internal structure of an energy-saving hot melt glue gun that can prevent glue backflow.

[0018] Figure 3 A schematic diagram of the planar structure of an energy-saving hot melt glue gun that can prevent glue backflow;

[0019] Figure 4 This is a schematic diagram of the internal structure of the hot melt tube in an energy-saving hot melt glue gun that can prevent glue backflow.

[0020] In the diagram: 1. Glue gun housing; 2. Slide rail; 3. Clamping ring; 4. Connecting tube; 5. Hot melt tube; 501. First partition; 502. Second partition; 503. Glue passage hole; 504. Slide rod; 505. Sealing plate; 506. Sealing gasket; 507. Spring; 508. Glue passage cavity; 6. PTC heater; 7. Glue nozzle; 8. Glue stick; 9. Push rod; 10. Tension spring; 11. Connecting rod; 12. Trigger; 13. Heat dissipation hole. Detailed Implementation

[0021] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] Please see Figures 1-4This utility model provides an embodiment of an energy-saving hot melt glue gun that prevents glue backflow, comprising a glue gun housing 1 and a glue stick 8. A slide rail 2 is fixedly connected to the inner wall of the glue gun housing 1, and a retaining ring 3 is slidably connected to the inner wall of the slide rail 2. A hot melt tube 5 is fixedly connected to the inner wall of the glue gun housing 1, and a connecting pipe 4 is fixedly connected to the inlet end of the hot melt tube 5. A glue nozzle 7 is fixedly connected to the inlet end of the hot melt tube 5. A PTC heater 6 is fixedly connected to the lower surface of the hot melt tube 5. The glue stick 8 extends into the hot melt tube 5 through the retaining ring 3 and the connecting pipe. A one-way flow mechanism is provided inside the hot melt tube 5, which includes a first partition 501, a second partition 502, a slide bar 504, and a sealing element. A plate 505 and a spring 507 are fixedly connected to the inner wall of the hot melt tube 5. A first partition 501 and a second partition 502 are fixedly connected. Both the first partition 501 and the second partition 502 have glue passage holes 503 on their surfaces, forming a glue passage cavity 508. A slide rod 504 is slidably connected between the first partition 501 and the second partition 502. A sealing plate 505 for sealing the glue passage cavity 508 is fixedly connected to the surface of the slide rod 504. A sealing gasket 506 is fixedly connected to the side wall of the sealing plate 505. A spring 507 is fixedly connected to the side wall of the second partition 502. The spring 507 is sleeved on the slide rod 504, and one end of the spring 507 is fixed to the side wall of the sealing plate 505. Connected; the PTC heater heats the hot melt tube 5, and the glue rod 8 melts into a liquid state. Under the pushing force of the push rod 9, the glue rod 8 continues to move, pushing the liquid glue to flow in the hot melt tube 5. When the glue flows into the glue passage cavity 508, due to the pressure, the sealing plate 505 overcomes the elastic force of the spring 507 and slides along the slide rod 504, opening the glue passage cavity 508 and allowing the glue to pass smoothly and be extruded through the glue nozzle 7. After releasing the trigger 12, under the action of the tension spring 10, the trigger 12, connecting rod 11 and push rod 9 reset, and the glue rod 8 stops advancing. At this time, the pressure in the glue passage cavity 508 decreases, and the spring 507 pushes the sealing plate 505 to reset, sealing the glue passage cavity 508. The system is designed to prevent backflow of the adhesive. A one-way flow mechanism consisting of a first partition 501, a second partition 502, a slide bar 504, a sealing plate 505, and a spring 507 controls the opening and closing of the sealing plate 505 using pressure difference. When the glue stick 8 is pushed forward, the channel is opened to allow the adhesive to flow out smoothly. When the glue supply stops, the channel is quickly closed to prevent backflow of the adhesive, reducing glue waste. Simultaneously, it prevents backflow of the adhesive from clogging the connecting pipe 4, extending the glue gun's lifespan. The PTC heater has automatic temperature control, precisely controlling the heating temperature and avoiding energy waste caused by overheating. The heat dissipation holes 13 on the glue gun housing 1 assist in heat dissipation, maintaining the PTC heater at an efficient operating temperature and further reducing energy consumption.

[0023] In this embodiment, a push rod 9 and a trigger 12 are rotatably connected to the inner wall of the glue gun housing 1. A connecting rod 11 is rotatably connected between the push rod 9 and the trigger 12. One end of the push rod 9 is rotatably connected to the inner wall of the retaining ring 3, and the protruding end of the push rod 9 abuts against the glue stick 8. A tension spring 10 is fixedly connected to the inner wall of the glue gun housing 1, and one end of the tension spring 10 is fixedly connected to the side wall of the connecting rod 11. The surface of the glue gun housing 1 is provided with evenly distributed heat dissipation holes 13. When using this energy-saving hot melt glue gun, the glue stick 8 is first inserted into the glue gun housing 1, and then slid on the slide rail 2 by the retaining ring 3. The glue stick 8 is fed into the hot melt tube 5 through the connecting tube. When the trigger 12 is pulled, the trigger 12 drives the push rod 9 to rotate through the connecting rod 11. The push rod 9 pushes the retaining ring 3 forward, thereby squeezing the glue stick 8 into the hot melt tube 5. The sliding connection between the slide rail 2 and the retaining ring 3, and the linkage between the push rod 9 and the trigger 12, form the trigger 12 linkage mechanism, which makes the glue stick 8 push smoothly and stably. Users can precisely adjust the glue dispensing amount by controlling the force of the trigger 12 to meet the needs of different scenarios. The tension spring 10 ensures that the trigger 12 resets quickly, improving the user experience.

[0024] When using this energy-saving hot melt glue gun, first insert the glue stick 8 into the glue gun housing 1. It is then positioned on the slide rail 2 by the locking ring 3 and fed into the hot melt tube 5 through the connecting tube. Pull the trigger 12, which drives the push rod 9 to rotate via the connecting rod 11. The push rod 9 pushes the locking ring 3 forward, thus squeezing the glue stick 8 into the hot melt tube 5. At this time, the PTC heater heats the hot melt tube 5, causing the glue stick 8 to melt into a liquid state. Under the pushing force of the push rod 9, the glue stick 8 continues to move, pushing the liquid glue into the hot melt tube 5. When the colloid flows into the glue passage cavity 508, the pressure pushes the sealing plate 505 to overcome the elastic force of the spring 507 and slide along the slide rod 504, opening the glue passage cavity 508 and allowing the colloid to pass smoothly through the glue outlet 7. After releasing the trigger 12, the trigger 12, connecting rod 11 and push rod 9 are reset under the action of the tension spring 10, and the glue rod 8 stops advancing. At this time, the pressure inside the glue passage cavity 508 decreases, and the spring 507 pushes the sealing plate 505 to reset, sealing the glue passage cavity 508 and preventing the colloid from flowing back.

[0025] The one-way flow mechanism, composed of the first partition 501, the second partition 502, the slide bar 504, the sealing plate 505, and the spring 507, uses pressure difference to control the opening and closing of the sealing plate 505. When the glue stick 8 is pushed forward, the channel is opened to allow the glue to flow out smoothly. When the glue supply stops, the channel is quickly closed to prevent glue backflow, reduce glue waste, and prevent glue backflow from clogging the connecting pipe 4, thus extending the glue gun's service life. The PTC heater has automatic constant temperature characteristics, which can accurately control the heating temperature and avoid energy waste caused by overheating. The heat dissipation holes 13 on the glue gun housing 1 assist in heat dissipation, keeping the PTC heater at an efficient working temperature and further reducing energy consumption. The sliding connection between the slide rail 2 and the locking ring 3, and the linkage between the push rod 9 and the trigger 12, form the trigger 12 linkage mechanism, which makes the glue stick 8 push forward smoothly and stably. Users can precisely adjust the glue dispensing amount by controlling the force of the trigger 12 to meet the needs of different scenarios. The tension spring 10 ensures that the trigger 12 resets quickly, improving the user experience.

[0026] This specification describes the embodiments, but not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An energy-saving hot melt glue gun that prevents glue backflow, characterized in that, The device includes a glue gun housing (1) and a glue stick (8). A slide rail (2) is fixedly connected to the inner wall of the glue gun housing (1). A retaining ring (3) is slidably connected to the inner wall of the slide rail (2). A hot melt tube (5) is fixedly connected to the inner wall of the glue gun housing (1). A connecting pipe (4) is fixedly connected to the inlet end of the hot melt tube (5). A glue nozzle (7) is fixedly connected to the inlet end of the hot melt tube (5). A PTC heater (6) is fixedly connected to the lower surface of the hot melt tube (5). The glue stick (8) extends into the hot melt tube (5) through the retaining ring (3) and the connecting pipe. A one-way flow mechanism is provided inside the hot melt tube (5). The one-way flow mechanism includes a first partition (501), a second partition (502), a slide rod (504), a sealing plate (505), and a spring (507).

2. The energy-saving hot melt glue gun with anti-backflow capability according to claim 1, characterized in that, The inner wall of the hot melt tube (5) is fixedly connected with a first partition (501) and a second partition (502). The surfaces of the first partition (501) and the second partition (502) are provided with glue passage holes (503), and the first partition (501) and the second partition (502) form a glue passage cavity (508).

3. The energy-saving hot melt glue gun with anti-backflow capability according to claim 1, characterized in that, A slide rod (504) is slidably connected between the first partition (501) and the second partition (502). A sealing plate (505) for sealing the glue passage cavity (508) is fixedly connected to the surface of the slide rod (504). A sealing gasket (506) is fixedly connected to the side wall of the sealing plate (505).

4. The energy-saving hot melt glue gun with anti-backflow capability according to claim 1, characterized in that, A spring (507) is fixedly connected to the side wall of the second partition (502). The spring (507) is sleeved on the slide rod (504), and one end of the spring (507) is fixedly connected to the side wall of the sealing plate (505).

5. The energy-saving hot melt glue gun with anti-backflow capability according to claim 1, characterized in that, The inner wall of the glue gun housing (1) is rotatably connected to a push rod (9) and a trigger (12). A connecting rod (11) is rotatably connected between the push rod (9) and the trigger (12). One end of the push rod (9) is rotatably connected to the inner wall of the clamping ring (3), and the protruding end of the push rod (9) abuts against the glue rod (8).

6. The energy-saving hot melt glue gun with anti-backflow capability according to claim 1, characterized in that, A tension spring (10) is fixedly connected to the inner wall of the glue gun housing (1), and one end of the tension spring (10) is fixedly connected to the side wall of the connecting rod (11).

7. The energy-saving hot melt glue gun with anti-backflow capability according to claim 1, characterized in that, The glue gun housing (1) has uniformly arranged heat dissipation holes (13) on its surface.

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