Adjustable ratio manual two-component glue gun

Abstract

The utility model belongs to the technical field of glue gun, disclose a kind of proportioning adjustable manual double-component glue gun, including pressure lever assembly, proportioning adjusting assembly and glue outlet component, proportioning adjusting assembly includes adjusting base and detachable shaft, driving rack, driving push rod, driven rack are sequentially movably arranged on adjusting base, driving gear, driven gear is replaceably installed on shaft and is engaged with driving rack, driven rack respectively, the front and rear end of driving push rod and driving rack are connected, pressure lever assembly's pressure lever promotes driving push rod movement, driving driving rack synchronous movement, extrude double-component glue cylinder one of glue cylinder, driving rack sequentially drives driving gear, shaft, driven gear, and then promote driven rack extrude another glue cylinder in double-component glue cylinder.The glue gun passes through adjustable gear transmission structure, only needs to replace the gear of same modulus different teeth number, realizes the non-integer proportion adjustment of manual glue gun, and can cover extensive continuous proportioning range.

Description

Technical Field

[0001] This utility model belongs to the field of glue gun technology, and mainly relates to a manual two-component glue gun with adjustable mixing ratio. Background Technology

[0002] A glue gun, also known as a caulking gun, is a tool for precisely extruding glue through leverage or mechanical pressure. Two-component glue guns are used for precise mixing and application of two-component adhesives or sealants. Based on the power source, they can be divided into three main categories: pneumatic, electric, and manual. They are mainly used in automobile manufacturing, building decoration, electronic assembly, and furniture manufacturing. They typically adopt a dual-tube design, supporting mixing ratio adjustments from 1:1 to 10:1, and are compatible with 50ml-750ml glue cartridges.

[0003] Existing manual two-component glue guns have the following technical defects: 1. Fixed ratio: It only supports the use of the same propulsion speed in the propulsion system, and can achieve integer ratios such as 1:1 and 2:1 by changing the rubber cylinder with different volume ratios. It cannot meet the engineering requirements of non-integer volume ratios such as 1.3:1 and 1.7:1. 2. Difficulty in modification: Changing the mixing ratio of existing manual two-component glue guns requires replacing them with non-standard ratio glue cartridges, which are expensive and have long delivery cycles.

[0004] Therefore, there is an urgent need for a manual two-component glue gun with adjustable mixing ratio, which can meet the mixing needs of special ratio glue for standard ratio glue cartridges. Summary of the Invention

[0005] To address the problems in the prior art, this utility model proposes a manual two-component glue gun with adjustable mixing ratio. It achieves continuous ratio adjustment from 1.1:1 to 5:1 through an adjustable gear transmission system, while being compatible with standard ratio glue cartridges (such as 1:1, 2:1, 3:1) and special ratios (such as 1.3:1, 1.7:1).

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: An adjustable-ratio manual two-component glue gun includes a pressure rod assembly, a ratio adjustment assembly, and a glue dispensing assembly. The ratio adjustment assembly includes an adjustment base connected to the pressure rod assembly and a detachable shaft mounted on the adjustment base. A drive rack, a drive push rod, and a driven rack are sequentially and movably arranged in parallel on the adjustment base. A drive gear and a driven gear are replaceably mounted on the shaft and mesh with the drive rack and driven rack, respectively. The front and rear ends of the drive push rod and the drive rack are connected. The pressure rod of the pressure rod assembly pushes the drive push rod to move, causing the drive rack to move synchronously and squeeze one of the two-component glue cartridges. The drive rack sequentially drives the drive gear, the shaft, and the driven gear, thereby pushing the driven rack to squeeze the other glue cartridge in the two-component glue cartridge. Finally, the glue is mixed and dispensed through the glue dispensing assembly.

[0007] Furthermore, the front ends of the active rack and the active push rod are connected by a large base, and the rear ends are connected by a clamping block, while the front end of the driven rack is provided with a small base.

[0008] Furthermore, the bottom of the adjusting base is provided with bearing seats that can be finely adjusted up and down, and the two ends of the shaft are detachably installed in the bearing seats, which are ball bearing seats.

[0009] Furthermore, the pressure rod assembly also includes a glue gun base, the glue dispensing assembly also includes a glue dispensing mixing tube, the pressure rod is movably disposed at the bottom of the glue gun base, the two-component glue cartridge is detachably mounted on the glue gun base, and the glue dispensing mixing tube is mounted at the front end of the glue gun base.

[0010] Furthermore, the module of the driving rack, driven rack, driving gear, and driven gear is 0.8 or 1.

[0011] Compared with the prior art, the present invention has the following beneficial effects: This utility model provides an adjustable manual two-component glue gun with an adjustable gear transmission structure that enables non-integer ratio adjustment of the manual glue gun. By replacing the rack with gears of the same module but different numbers of teeth, a wide range of continuous mixing ratios can be covered. It is modular and easy to install. It uses standard module parts, resulting in low maintenance costs. The unique gear-rack center distance adjustment method ensures reliable transmission. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the overall structure of the proportioning adjustment component of this utility model.

[0014] Figure 3 This is a partial structural schematic diagram of the proportioning adjustment component of this utility model.

[0015] Figure 4 This is a schematic diagram showing the connection relationship between the dispensing assembly and part of the proportioning adjustment assembly.

[0016] Wherein: 100, pressure bar assembly; 101, pressure bar; 102, glue gun base; 200. Dispensing assembly; 201. Dispensing mixing tube; 202. Two-component glue cartridge; 300. Proportioning adjustment assembly; 301. Adjustment base; 302. Shaft; 303. Bearing housing; 304. Active push rod; 305. Active rack; 306. Active gear; 307. Driven rack; 308. Driven gear; 309. Clamping block; 310. Large base; 311. Small base. Detailed Implementation

[0017] like Figures 1-4 As shown, this is a manual two-component glue gun with adjustable mixing ratio. It adopts a modular design and includes three modules: a pressure rod assembly 100, a mixing ratio adjustment assembly 200, and a glue dispensing assembly 300. The pressure rod assembly 100 drives the mixing ratio adjustment assembly 300 to adjust the glue dispensing ratio of the glue dispensing assembly 200.

[0018] For ease of description, it is hereby stipulated that... Figure 1 For example, Figure 1 The left side is the front side of the glue gun, that is, the direction of the glue mixing tube 201 is forward; the opposite side is the rear side of the glue gun, that is, the direction of the clamping block 309 is backward. Figure 1 The driven rack 307 is oriented to the left side of the glue gun, while the driving rack 305 on the opposite side is oriented to the right side of the glue gun.

[0019] The pressure rod assembly 100 includes a pressure rod 101 and a glue gun base 102, wherein the pressure rod 101 is movably disposed at the bottom of the glue gun base 102.

[0020] The dispensing assembly 200 includes a dispensing mixing tube 201 and a two-component glue cartridge 202. The two-component glue cartridge 202 is detachably mounted on the glue gun base 102. The dispensing mixing tube 201 is mounted on the front end of the glue gun base 102. The dispensing port of the two-component glue cartridge 202 is connected to the inlet of the dispensing mixing tube 201. The two-component glue cartridge 202 is a double glue cartridge.

[0021] The proportioning adjustment component 300 adopts an adjustable gear transmission structure, including an adjustment base 301, a shaft 302, a bearing seat 303, an active push rod 304, an active rack 305, an active gear 306, a driven rack 307, a driven gear 308, a clamping block 309, a large base 310, and a small base 311.

[0022] The adjusting base 301 is mounted on the glue gun base 102. The active rack 305, active push rod 304, and driven rack 307 are sequentially and movably mounted parallel to each other on the upper side of the adjusting base 301. The pressure rod 101 is connected to the active push rod 304 in the middle, driving the active push rod 304 forward. The front ends of the active rack 305 and the active push rod 304 are connected via a large base 310, used to squeeze the tail of the right side of the two-component glue cartridge 202. The tail end is connected via a clamping block 309, used to drive the synchronous movement of the active rack 305 and the active push rod 304. The front end of the driven rack 307 is provided with a small base 311, used to squeeze the two-component glue cartridge 202. 2. The tail end of the left rubber tube; the bottom ends of the adjusting base 301 are provided with bearing seats 303 that can be finely adjusted up and down. The two ends of the shaft 302 are detachably installed in the bearing seats 303. The bearing seats 303 are ball bearing seats, which allow the bearing to tilt. The fine adjustment of the position of the bearing seats 303, in conjunction with the tilt of the shaft 302 in the ball bearing seats 303, compensates for the center distance and realizes the adjustment of the gear position to meet the precise meshing of the rack with different gears; the driving gear 306 and the driven gear 308 are both installed and limited on the shaft 302 and mesh with the driving rack 305 and the driven rack 307 respectively. The shaft 302 is equipped with a C-type snap ring for axial positioning of the gear and the bearing seat.

[0023] When glue needs to be applied, manually press the pressure rod 101. The pressure rod 101 pushes the active push rod 304 forward. The active push rod 304 drives the active rack 305 to move forward synchronously through the clamping block 309. The large base 310 set at the front end of the active push rod 304 and the active rack 305 squeezes forward from the tail of the right glue tube of the two-component glue tube 202, and glue is dispensed from the right glue tube.

[0024] Meanwhile, the active rack 305 meshes with the active gear 306, causing the active gear 306 to rotate. The active gear 306 drives the shaft 302 to rotate in the same direction, which in turn drives the driven gear 308 to rotate in the same direction. The driven gear 308 meshes with the driven rack 307, causing the driven rack 307 to move forward. The small base 311 at the front end of the driven rack 307 presses forward from the tail of the left side of the two-component glue tube 202, and glue is discharged from the left side of the glue tube.

[0025] Finally, the glue from the left and right glue tubes is mixed and enters the glue dispensing pipe 201, completing the glue mixing and dispensing process.

[0026] The module of the driving rack 305, driven rack 307, driving gear 306, and driven gear 308 should preferably be 0.8 or 1.

[0027] The driving rack 305 and driven rack 307 have the same number of teeth. Therefore, to control the glue dispensing ratio of the two glue cylinders, it is only necessary to replace the driving gear 306 and driven gear 308 to adjust their tooth ratio and achieve the same rack feed speed ratio. The parameter selection is as follows: 1. Standard proportional mode, using standard two-component rubber cartridges, with identical driving and driven gears, and double racks advancing at a constant speed.

[0028] If the target ratio is a standard ratio such as 1:1, 2:1, or 3:1, use a standard two-component rubber cartridge with the same ratio, and ensure that the number of teeth on the drive gear and driven gear is the same, for example, 15 teeth. The same rack and pinion speed will meet the target requirements.

[0029] 2. Non-standard ratio mode, using standard two-component rubber tube, double rack non-uniform speed propulsion.

[0030] If the target ratio is 1.3:1, which is close to the standard ratio of 1:1, use a 1:1 standard rubber tube, and the double rack and pinion propulsion speed is 1.3:1, that is, the gear tooth ratio is 1.3 to 1. Select 13 teeth for the driving gear and 10 teeth for the driven gear.

[0031] For example, if the target ratio is 1.7:1, which is close to the standard ratio of 2:1, use a 2:1 standard rubber tube, and the double rack propulsion speed is 0.85:1, that is, the gear tooth ratio is 0.85 to 1. Select 17 teeth for the driving gear and 20 teeth for the driven gear.

[0032] By changing the two-component cartridges with different ratios and using different gear ratios, a wider range of ratio adjustment can be achieved.

[0033] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A manual two-component glue gun with adjustable dispensing ratio, characterized in that, The assembly includes a pressure rod assembly (100), a proportioning adjustment assembly (300), and a dispensing assembly (200). The proportioning adjustment assembly (300) includes an adjustment base (301) connected to the pressure rod assembly (100) and a detachable shaft (302) mounted on the adjustment base (301). A drive rack (305), a drive push rod (304), and a driven rack (307) are sequentially and movably arranged parallel to each other on the adjustment base (301). A drive gear (306) and a driven gear (308) are replaceably mounted on the shaft (302) and respectively connected to the drive rack (305). 5) The driven rack (307) is engaged, and the front and rear ends of the active push rod (304) and the active rack (305) are connected. The pressure rod (101) of the pressure rod assembly (100) pushes the active push rod (304) to move, which drives the active rack (305) to move synchronously and squeeze one of the two-component glue cylinders. The active rack (305) drives the active gear (306), shaft (302) and driven gear (308) in sequence, which in turn pushes the driven rack (307) to squeeze the other glue cylinder in the two-component glue cylinder. Finally, the glue is mixed and discharged through the glue dispensing assembly (200).

2. The adjustable-ratio manual two-component glue gun according to claim 1, characterized in that, The front ends of the active rack (305) and the active push rod (304) are connected by a large base (310), and the rear ends are connected by a clamping block (309). The front end of the driven rack (307) is provided with a small base (311).

3. The adjustable-ratio manual two-component glue gun according to claim 1, characterized in that, The bottom of the adjusting base (301) is provided with bearing seats (303) that can be finely adjusted up and down. The two ends of the shaft (302) are detachably installed in the bearing seats (303). The bearing seats (303) are ball bearing seats.

4. The adjustable-ratio manual two-component glue gun according to claim 1, characterized in that, The pressure rod assembly (100) also includes a glue gun base (102), and the glue dispensing assembly (200) also includes a glue dispensing mixing tube (201). The pressure rod (101) is movably disposed at the bottom of the glue gun base (102), the two-component glue cartridge (202) is detachably mounted on the glue gun base (102), and the glue dispensing mixing tube (201) is mounted at the front end of the glue gun base (102).

5. The adjustable-ratio manual two-component glue gun according to claim 1, characterized in that, The module of the driving rack (305), driven rack (307), driving gear (306), and driven gear (308) is 0.8 or 1.

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