Glue overflow prevention structure

Abstract

The utility model belongs to the technical field of glue guns, and discloses a glue overflow prevention structure which comprises a glue containing pipe, one end of the glue containing pipe is fixedly connected with a nozzle, the other end of the glue containing pipe is fixedly connected with a fixing block, a center push rod is movably connected in the fixing block, one end of the center push rod is movably connected in the glue containing pipe, and the other end of the center push rod is movably connected in the glue containing pipe. A push piece is fixedly connected to the outer surface of the center push rod and located in the fixing block, a spring is fixedly connected to one end of the push piece, one end of the spring is fixedly connected to the interior of the fixing block, a self-locking piece is movably connected to the end, away from the spring, of the fixing block, and a trigger is fixedly connected to the bottom end of the push piece. The interior of the trigger is movably connected to the outer surface of the bottom end of the fixing block, self-locking operation of the glue gun can be achieved, glue overflow caused by mistaken touch of the trigger is prevented, trigger locking can be achieved, mistaken touch of the trigger is avoided, abrasion to a self-locking piece is prevented, and the service life of the self-locking piece is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of glue gun technology, and in particular relates to a glue spill prevention structure. Background Technology

[0002] Glue guns are commonly used tools in the construction and decoration industry, widely applied for filling and fixing walls, floors, and furniture. Traditionally, caulking guns work by pressing a trigger, which moves a push rod at one end of the gun body inward, causing the glue in the tube to flow out from the nozzle, completing the filling or bonding work. However, existing spray guns lack a self-locking function. Accidental triggering causes glue inside the tube to flow out along the nozzle, and the trigger cannot be locked. This can lead to wear on the self-locking plate, affecting its lifespan. Utility Model Content

[0003] This invention addresses the problem that existing anti-overflow adhesive structures lack a self-locking function, leading to adhesive leakage from the filling tube along the nozzle when the trigger is accidentally engaged, and preventing proper trigger locking. This, in turn, causes wear on the self-locking plate, affecting its lifespan. The following technical solution is proposed:

[0004] An anti-overflow adhesive structure includes an adhesive tube, one end of which is fixedly connected to a nozzle, and the other end of which is fixedly connected to a fixing block. A central push rod is movably connected inside the fixing block, one end of which is movably connected to the inside of the adhesive tube. A push plate is fixedly connected to the outer surface of the central push rod inside the fixing block. A spring is fixedly connected to one end of the push plate, and one end of the spring is fixedly connected to the inside of the fixing block. A self-locking plate is movably connected to the end of the fixing block away from the spring. A trigger is fixedly connected to the bottom end of the push plate, and the trigger is movably connected to the outer surface of the bottom end of the fixing block. Two cylinders are fixedly connected to both sides of the outer surface of the bottom end of the trigger. A movable rod is fixedly connected between the two cylinders. A movable sleeve is movably connected to the outer surface of the movable rod. A positioning plate is fixedly connected to the outer surface of the movable sleeve. A handle is fixedly connected to the bottom end of the fixing block, and an L-shaped plate is fixedly connected to the outer surface of the bottom end of the handle.

[0005] Preferably, a slider is fixedly connected to the bottom end of the pusher, a groove is provided at the top of the fixed block corresponding to the position of the outer surface of the slider, a spring telescopic rod is fixedly connected to one end of the slider, and one end of the spring telescopic rod is fixedly connected to the inside of the fixed block.

[0006] Preferably, the positioning plate has a positioning groove inside, and the length of the positioning groove is the same as the length of the L-shaped plate.

[0007] Preferably, the outer surface of the bottom end of the L-shaped plate and the inner surface of the positioning plate are in contact with each other.

[0008] Preferably, the slider is rectangular in shape, and the width of the slider is the same as the width of the groove.

[0009] Preferably, the center of the push plate and the center of the central push rod are on the same horizontal line.

[0010] The beneficial effects of this utility model are as follows:

[0011] (1) It can perform self-locking operation on the glue gun to prevent glue from overflowing due to accidental triggering. It can also lock the trigger to avoid accidental triggering, prevent wear on the self-locking plate, and improve the service life of the self-locking plate.

[0012] (2) It can ensure that the slider can quickly rebound when the trigger is released, thereby driving the center push rod to move, so that the center push rod no longer applies force to the inside of the glue tube, effectively preventing glue leakage or overflow. Attached Figure Description

[0013] Figure 1 The diagram shown is a schematic of a structure that prevents adhesive spillage.

[0014] Figure 2 The diagram shows the installation structure of the pusher plate;

[0015] Figure 3 The diagram shows the mounting structure of the slider;

[0016] Figure 4 The diagram shown is a schematic of the installation structure of the positioning plate;

[0017] In the diagram: 1. Adhesive tube; 2. Nozzle; 3. Fixing block; 4. Center push rod; 5. Push plate; 6. Spring; 7. Self-locking plate; 8. Trigger; 9. Cylinder; 10. Movable rod; 11. Movable sleeve; 12. Positioning plate; 13. Handle; 14. L-shaped plate; 15. Slider; 16. Slide groove; 17. Spring telescopic rod. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0019] Example 1: This utility model provides an anti-overflow adhesive structure, such as... Figures 1 to 4As shown, the device includes a dispensing tube 1, with a nozzle 2 fixedly connected to one end and a fixing block 3 fixedly connected to the other end. A central push rod 4 is movably connected inside the fixing block 3, with one end of the central push rod 4 movably connected inside the dispensing tube 1. A push plate 5 is fixedly connected to the outer surface of the central push rod 4 inside the fixing block 3. A spring 6 is fixedly connected to one end of the push plate 5, and the other end of the spring 6 is fixedly connected inside the fixing block 3. A self-locking piece 7 is movably connected to the end of the fixing block 3 away from the spring 6. A trigger is fixedly connected to the bottom end of the push plate 5. 8. The trigger 8 is internally movably connected to the outer surface of the bottom end of the fixed block 3. Both sides of the outer surface of the bottom end of the trigger 8 are fixedly connected to cylinders 9. A movable rod 10 is fixedly connected between the two cylinders 9. A movable sleeve 11 is movably connected to the outer surface of the movable rod 10. A positioning plate 12 is fixedly connected to the outer surface of the movable sleeve 11. A handle 13 is fixedly connected to the bottom end of the fixed block 3. A limit rod is fixedly connected to one end of the handle 13. The outer surface of the limit rod is in contact with the outer surface of the trigger 8. An L-shaped plate 14 is fixedly connected to the outer surface of the bottom end of the handle 13.

[0020] like Figure 1 and Figure 2 As shown, a slider 15 is fixedly connected to the bottom of the pusher 5. A groove 16 is provided at the top of the fixed block 3 corresponding to the position of the outer surface of the slider 15. A spring telescopic rod 17 is fixedly connected to one end of the slider 15. One end of the spring telescopic rod 17 is fixedly connected to the inside of the fixed block 3. As the pusher 5 moves, it drives the slider 15 to move synchronously. The slider 15 will slide along the inside of the groove 16. The movement of the slider 15 will squeeze the spring telescopic rod 17, causing the inside of the spring telescopic rod 17 to deform, thereby driving the slider 15 to move. Then, when the glue is sprayed and the trigger 8 is released, the slider 15 will quickly rebound due to the double elastic force of the spring 6 and the spring telescopic rod 17. This causes the slider 15 to drive the central push rod 4 to quickly close the internal outlet of the glue tube 1, thereby preventing the glue from overflowing along the nozzle 2. This ensures that the slider 15 rebounds quickly when the trigger 8 is released, thereby driving the central push rod 4 to move, so that the central push rod 4 no longer applies force to the inside of the glue tube 1, effectively preventing glue leakage or overflow.

[0021] like Figure 1 and Figure 2 As shown, the positioning plate 12 has a positioning groove inside, and the length of the positioning groove is the same as the length of the L-shaped plate 14, so that the L-shaped plate 14 can be snapped into the positioning plate 12, and the positioning plate 12 and the L-shaped plate 14 can achieve a linkage effect.

[0022] like Figure 1 and Figure 2 As shown, the outer surface of the bottom end of the L-shaped plate 14 and the inner surface of the positioning plate 12 are in contact with each other. Due to the elastic force of the spring 6, the trigger 8 is driven to move away from the handle 13, thereby completing the engagement between the L-shaped plate 14 and the positioning plate 12, and thus locking the trigger 8.

[0023] like Figure 1 and Figure 3 As shown, the slider 15 is rectangular in shape, and the width of the slider 15 is the same as the width of the groove 16, which can provide stable support and prevent the position of the slider 15 from changing when it moves, thus effectively improving the stability of the slider 15 when it moves.

[0024] like Figure 1 and Figure 3 As shown, the center of the push plate 5 and the center of the central push rod 4 are on the same horizontal line to prevent the central push rod 4 and the push plate 5 from being misaligned, which would affect the normal operation of the push plate 5.

[0025] Working Principle: In actual use, when glue gun application is required, first place nozzle 2 at the glue application position, push the self-locking plate 7 upwards to release it from locking the central push rod 4, grasp handle 13 and pull trigger 8. This moves trigger 8 towards handle 13, causing push plate 5 to move synchronously. Push plate 5 exerts force on spring 6, causing it to deform. Push plate 5 then moves the central push rod 4 synchronously inside the glue tube 1, compressing the inside of the glue tube 1. This causes the adhesive to be discharged along the nozzle 2. After the spray gun is used, rotate the movable sleeve 11 so that the inside of the movable sleeve 11 rotates along the outer surface of the movable rod 10. The rotation of the movable sleeve 11 drives the positioning plate 12 to rotate synchronously. As the positioning plate 12 continues to rotate, the L-shaped plate 14 will be locked into the inside of the positioning plate 12. At this time, the trigger 8 is locked, which can realize the self-locking operation of the glue gun, prevent the adhesive from overflowing due to accidental triggering, and also realize trigger locking to avoid accidental triggering, prevent wear on the self-locking plate, and improve the service life of the self-locking plate.

[0026] Then, as the pusher 5 moves, the slider 15 moves synchronously. The slider 15 slides along the inside of the groove 16. The movement of the slider 15 squeezes the spring telescopic rod 17, causing the inside of the spring telescopic rod 17 to deform, thereby driving the slider 15 to move. Then, when the glue spraying is completed and the trigger 8 is released, the slider 15 quickly rebounds due to the combined elastic force of the spring 6 and the spring telescopic rod 17. The slider 15 drives the central push rod 4 to move, so that the central push rod 4 no longer applies force to the inside of the glue tube 1, thereby preventing the glue from overflowing along the nozzle 2. This ensures that the slider 15 rebounds quickly when the trigger 8 is released, thereby driving the central push rod 4 to move, so that the central push rod 4 no longer applies force to the inside of the glue tube 1, effectively preventing glue leakage or overflow.

[0027] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An anti-overflow adhesive structure, characterized in that, The device includes a dispensing tube (1), one end of which is fixedly connected to a nozzle (2), and the other end of which is fixedly connected to a fixing block (3). A central push rod (4) is movably connected inside the fixing block (3). One end of the central push rod (4) is movably connected inside the dispensing tube (1). A push plate (5) is fixedly connected to the outer surface of the central push rod (4) inside the fixing block (3). One end of the push plate (5) is fixedly connected to a spring (6), and one end of the spring (6) is fixedly connected inside the fixing block (3). A self-... The locking plate (7) has a trigger (8) fixedly connected to the bottom end of the push plate (5). The trigger (8) is movably connected to the outer surface of the bottom end of the fixed block (3). Both sides of the outer surface of the bottom end of the trigger (8) are fixedly connected to cylinders (9). A movable rod (10) is fixedly connected between the two cylinders (9). A movable sleeve (11) is movably connected to the outer surface of the movable rod (10). A positioning plate (12) is fixedly connected to the outer surface of the movable sleeve (11). A handle (13) is fixedly connected to the bottom end of the fixed block (3). An L-shaped plate (14) is fixedly connected to the outer surface of the bottom end of the handle (13).

2. The anti-overflow adhesive structure according to claim 1, characterized in that: The bottom end of the push plate (5) is fixedly connected to a slider (15), and the top end of the fixed block (3) is provided with a groove (16) corresponding to the position of the outer surface of the slider (15). One end of the slider (15) is fixedly connected to a spring telescopic rod (17), and one end of the spring telescopic rod (17) is fixedly connected to the inside of the fixed block (3).

3. The anti-overflow adhesive structure according to claim 1, characterized in that: The positioning plate (12) has a positioning groove inside, and the length of the positioning groove is the same as the length of the L-shaped plate (14).

4. The anti-overflow adhesive structure according to claim 1, characterized in that: The outer surface of the bottom end of the L-shaped plate (14) and the inner surface of the positioning plate (12) are in contact with each other.

5. The anti-overflow adhesive structure according to claim 2, characterized in that: The slider (15) is rectangular in shape, and the width of the slider (15) is the same as the width of the groove (16).

6. The anti-overflow adhesive structure according to claim 1, characterized in that: The center of the push plate (5) and the center of the central push rod (4) are on the same horizontal line.

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