An electric glue gun

Abstract

The utility model provides a kind of electric glue gun, including material pipe, extrusion mechanism, speed reduction mechanism, motor, motor drives extrusion mechanism movement by speed reduction mechanism, extrusion mechanism includes extrusion head, chain, sprocket, chain box, reset block, original gear rack drive is replaced by chain sprocket, chain is hidden in chain box, in the process of gluing, the length of electric glue gun does not change, ensure that electric glue gun can be used in narrow space, improve user experience.

Description

Technical Field

[0001] This utility model relates to the field of glue gun technology, specifically an electric glue gun. Background Technology

[0002] An electric glue gun is a handheld power tool that applies silicone sealant to the surface of objects to be bonded using a built-in electric extrusion mechanism. However, existing electric glue guns generally use a rack and pinion drive as their electric extrusion mechanism. When the glue stick is loaded into the gun body, the rack that drives the glue stick extends from the rear of the gun body, increasing the overall length of the device. During the glue application process, the rack gradually retracts into the gun body. This extra extension before operation not only hinders user operation but also makes electric glue guns completely unusable in confined spaces, greatly limiting their application range. Utility Model Content

[0003] In view of the shortcomings of existing electric glue guns, the technical problem to be solved by this utility model is to provide an electric glue gun with a constant gun body length during glue application, so as to ensure that the electric glue gun can be used in a confined space and improve the user experience.

[0004] To achieve the above objectives, according to one aspect of this utility model, the utility model is implemented through the following technical measures: an electric glue gun includes a material tube, an extrusion mechanism, a reduction mechanism, and a motor. The motor drives the extrusion mechanism to move through the reduction mechanism. The extrusion mechanism includes an extrusion head, a chain, a sprocket, a chain box, and a reset block. The chain box is arranged parallel to the material tube, and a chain is provided inside the chain box. The sprocket is located on one side of the material tube. The reduction mechanism drives the sprocket to rotate. The chain meshes with the sprocket. Both ends of the chain are connected to the extrusion head and the reset block, respectively. The extrusion head is located inside the material tube, and the reset block is movably sleeved outside the chain box.

[0005] Furthermore, the reduction mechanism includes a reduction gearbox, a gear set, a worm gear set, and a planetary gear set. The planetary gear set includes a sun gear, planet gears, and a planet carrier. The sun gear is coaxial with the motor shaft, and the planet gear shafts are connected to the planet carrier. The gear set includes gear I and gear II. The worm gear set includes a worm wheel and a worm. The worm is connected to the planet carrier. The worm wheel is coaxial with gear I, and gear II is coaxial with the sprocket.

[0006] Furthermore, the reduction mechanism also includes a switch, and the planetary gear set also includes a gear ring, the inner wall of which meshes with the planetary gears. The switch controls the gear ring to rotate freely or brake.

[0007] Furthermore, the deceleration mechanism also includes a switch base, with multiple insertion slots evenly distributed on the outer side of the gear ring, a switch hole on the switch base, a insertion block at one end of the switch, and a spring at the other end. The switch abuts against the switch base through the spring, and the insertion block passes through the switch hole and abuts against the gear ring. When the spring is in its natural state, the insertion block is embedded in the insertion slot to brake the gear ring.

[0008] Compared with the prior art, the advantages of this utility model are as follows: This electric glue gun uses a chain and sprocket to replace the original gear and rack transmission, and hides the chain in the chain box. During the glue application process, the length of the electric glue gun does not change, ensuring that the electric glue gun can be used in a small space and improving the user experience. Attached Figure Description

[0009] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a schematic diagram of the overall structure of an electric glue gun according to the present invention; Figure 2 This is an exploded view of an electric glue gun according to the present invention. Figure 3 This is a schematic diagram of the deceleration mechanism described in this utility model; Figure 4 This is a schematic diagram of the structure of the switch and switch base described in this utility model.

[0010] Explanation of reference numerals in the attached drawings: 1. Material tube; 2. Extrusion mechanism; 3. Reduction mechanism; 4. Motor; 5. Extrusion head; 6. Chain; 7. Sprocket; 8. Chain box; 9. Reset block; 10. Reduction gearbox; 11. Gear set; 12. Worm gear set; 13. Planetary gear set; 14. Switch base; 15. Switch; 16. Gear I; 17. Gear II; 18. Worm gear; 19. Worm; 20. Sun gear; 21. Planetary gears; 22. Gear ring; 23. Planetary carrier; 24. Insertion slot; 25. Switch hole; 26. Insertion block; 27. Spring. Detailed Implementation

[0011] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the present application can be combined with each other.

[0012] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "bottom", "top", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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, they should not be construed as limitations on this utility model.

[0013] Please refer to Figure 1 , Figure 2 This embodiment provides an electric glue gun, including a material tube 1, an extrusion mechanism 2, a reduction mechanism 3, and a motor 4. The motor 4 drives the extrusion mechanism 2 to move through the reduction mechanism 3. The extrusion mechanism 2 includes an extrusion head 5, a chain 6, a sprocket 7, a chain box 8, and a reset block 9. The chain box 8 is arranged parallel to the material tube 1. The chain 6 is provided inside the chain box 8. The sprocket 7 is located on one side of the material tube 1. The chain 6 meshes with the sprocket 7. The two ends of the chain 6 are respectively connected to the extrusion head 5 and the reset block 9. The extrusion head 5 is located inside the material tube 1 and can slide inside the material tube 1. The reset block 9 is movably sleeved on the outside of the chain box 8.

[0014] Reference Figure 3 Continuing the explanation, the reduction mechanism 3 includes a reduction gearbox 10, a gear set 11, a worm gear set 12, a planetary gear set 13, a switch base 14, and a switch 15. The reduction gearbox 10 is connected and fixed to the material tube 1 and the chain box 8. The gear set 11 includes gear I 16 and gear II 17. The worm gear set 12 includes a worm gear 18 and a worm 19. The planetary gear set 13 is connected to the gear set 11 via the worm gear set 12. The planetary gear set 13 includes a sun gear 20 and planet gears 21. The gear ring 22 and planetary carrier 23 are connected. The inner wall of the gear ring 22 meshes with the planetary gear 21. Multiple insertion slots 24 are evenly distributed on the outer side of the gear ring 22. The sun gear 20 is coaxial with the motor shaft 4. The planetary gear 21 is shaft-connected to the planetary carrier 23. The planetary carrier 23 is connected to the worm gear 19. When the planetary carrier 23 rotates, it can drive the worm gear 19 to rotate. The worm wheel 18 is coaxial with gear I 16. Gear II 17 is coaxial with sprocket 7. When the worm gear 19 rotates, it drives the sprocket 7 to rotate through the worm wheel 18 and gear set 11.

[0015] Reference Figure 4 Continuing the explanation, the switch base 14 has a switch hole 25, and the switch 15 is located outside the switch hole 25. One end of the switch 15 is provided with a plug block 26, which passes through the switch hole 25 and abuts against the gear ring 22. The other end of the switch 15 is provided with a spring 27, which abuts against the switch base 14 through the spring 27. When the spring 27 is in its natural state, the plug block 26 of the switch 15 is embedded in the plug groove 24 to brake the gear ring 22.

[0016] This embodiment provides an electric glue gun. In use, the plug block 26 of the switch 15 is embedded in the plug slot 24, the gear ring 22 is in a braking state, the motor 4 starts and drives the sun gear 20 to rotate, which in turn drives the planetary gears 21 to rotate. Because the gear ring 22 is in a braking state, the planetary gears 21 drive the planet carrier 23 to rotate along with the sun gear 20. The planetary carrier 23 drives the chain 6 through the worm gear assembly 12 and the gear set 11. The extrusion head 5 follows the chain 6 to push the glue stick, causing the liquid adhesive to be ejected from the feed tube 1. When it is necessary to replace the glue stick, press... When switch 15 and spring 27 are in a compressed state, the plug block 26 of switch 15 disengages from the plug slot 24. At this time, the gear ring 22 is in a free state. The sun gear 20 drives the gear ring 22 to rotate through the planet gear 21, that is, the planetary gear set 13 rotates freely, the planet carrier 23 does not rotate, the worm gear set 12 and the gear set 11 do not rotate. By moving the reset block 9, the chain 6 in the material tube 1 can be retracted into the chain box 8, the extrusion head 5 is reset, the rubber rod is replaced, and after the replacement is completed, switch 15 is released. Under the action of spring 27, the plug block 26 of switch 15 brakes the gear ring 22 again.

[0017] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various changes and modifications can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electric glue gun, comprising a feed tube (1), an extrusion mechanism (2), a reduction mechanism (3), and a motor (4), wherein the motor (4) drives the extrusion mechanism (2) to move via the reduction mechanism (3), characterized in that: The extrusion mechanism (2) includes an extrusion head (5), a chain (6), a sprocket (7), a chain box (8), and a reset block (9). The chain box (8) is arranged parallel to the material tube (1). The chain (6) is provided inside the chain box (8). The sprocket (7) is located on one side of the material tube (1). The deceleration mechanism (3) drives the sprocket (7) to rotate. The chain (6) meshes with the sprocket (7). The two ends of the chain (6) are connected to the extrusion head (5) and the reset block (9) respectively. The extrusion head (5) is located inside the material tube (1). The reset block (9) is movably sleeved outside the chain box (8).

2. The electric glue gun according to claim 1, characterized in that: The reduction mechanism (3) includes a reduction gearbox (10), a gear set (11), a worm gear set (12), and a planetary gear set (13). The planetary gear set (13) includes a sun gear (20), planet gears (21), and a planet carrier (23). The sun gear (20) is coaxial with the shaft of the motor (4), and the planet gears (21) are connected to the planet carrier (23). The gear set (11) includes gear I (16) and gear II (17). The worm gear set (12) includes a worm wheel (18) and a worm (19). The worm (19) is connected to the planet carrier (23). The worm wheel (18) is coaxial with gear I (16), and gear II (17) is coaxial with the sprocket (7).

3. The electric glue gun according to claim 2, characterized in that: The deceleration mechanism (3) also includes a switch (15), and the planetary gear set (13) also includes a gear ring (22). The inner wall of the gear ring (22) meshes with the planetary gear (21). The switch (15) controls the gear ring (22) to rotate freely or brake.

4. The electric glue gun according to claim 3, characterized in that: The deceleration mechanism (3) also includes a switch base (14). Multiple insertion slots (24) are evenly distributed on the outer side of the gear ring (22). A switch hole (25) is opened on the switch base (14). One end of the switch (15) is provided with a insertion block (26), and the other end is provided with a spring (27). The switch (15) abuts against the switch base (14) through the spring (27). The insertion block (26) passes through the switch hole (25) and abuts against the gear ring (22). When the spring (27) is in its natural state, the insertion block (26) is embedded in the insertion slot (24) to brake the gear ring (22).

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