Glue mixing head and glue gun

Abstract

The utility model relates to the technical field of gluing guns, in particular to a colloid mixing head and a gluing gun, the colloid mixing head comprises a connecting pipe and a mixing mechanism, one end of the connecting pipe is used for feeding colloid, the mixing mechanism is respectively provided with an input end and an output end which are communicated, the other end of the connecting pipe is communicated with the input end, and the output end is communicated with the output end. And a stirring structure for dynamically stirring the colloid is arranged in the mixing mechanism. The glue mixing device is high in universality, can be conveniently mounted on a common glue storage bottle, and has a good glue mixing effect under the action of the mixing mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of glue gun, more particularly to a kind of colloid mixing head and glue gun. BACKGROUND

[0002] Two-component adhesive (such as epoxy resin, polyurethane, etc.) has been widely used in aerospace, automobile manufacturing, electronic packaging, building decoration and other fields due to its fast curing speed, high bonding strength, excellent weather resistance and other characteristics. This type of adhesive usually consists of A component (matrix resin) and B component (curing agent) mixed in a specific ratio before use, which reacts chemically to form a bonding effect. The mixing quality directly affects the core performance indicators such as curing speed and bonding strength of the adhesive.

[0003] Traditional two-component mixing equipment mainly uses static mixing tube technology, which sets spiral static blades in the mixing tube to realize component mixing by using the shear force of the adhesive flow. However, this technology has the following significant defects:

[0004] 1. Insufficient mixing uniformity: For high viscosity or thixotropic adhesive, static mixing is difficult to break through laminar flow state, resulting in obvious stratification phenomenon at the mixing interface, and experimental data shows that when the viscosity of the adhesive exceeds 5000 cps, microscopic observation of the cross section of the adhesive after static mixing can see un-dispersed filamentous stripes;

[0005] 2. Easy to occur local curing: In intermittent operation scenarios, residual adhesive cannot be cleaned in time and cross-linking reaction occurs in the mixing tube, causing pipe wall fouling and even complete blockage;

[0006] 3. Temperature sensitivity defect: Environmental temperature changes can significantly affect the rheological properties of the adhesive, but existing equipment lacks temperature control modules. In winter operation, low temperature causes the viscosity of the adhesive to increase sharply, and often appears the abnormal condition that the flow rate at the outlet of the mixing head decreases by more than 60%;

[0007] 4. Poor structural adaptability: The rigid connection between the existing mixing head and the adhesive storage bottle makes it difficult to adjust the angle, and it is difficult to achieve precise glue application in narrow space operation.

[0008] In view of the technical bottleneck, the industry has put forward various improvement schemes, among which the existing technology CN201920519092.2 discloses a glue gun screw transmission device, which belongs to the field of sealant glue injection auxiliary device. The glue gun screw transmission device comprises a box body, a motor and a speed reducer fixedly connected in the box body, and an input shaft of the motor connected with an output shaft of the speed reducer. A shaft sleeve is assembled between an end groove of the shaft sleeve and the output shaft of the speed reducer. A shaft coupling is located in the end of the shaft sleeve away from the output shaft of the speed reducer. A first limiting mechanism is fixedly arranged on the outer wall of the shaft sleeve. A second limiting mechanism is fixedly arranged on the inner wall of the shaft coupling. The shaft coupling and the shaft sleeve of the device adopt clearance fit and can move smoothly forward and backward. The mixture of A glue and B glue can be mixed by mechanical assistance, so that it is easier to mix uniformly and the mixing effect is good. However, the device is only suitable for specific glue bottles and cannot be applied to side-by-side connected glue bottles, so the universality is poor. Utility model content

[0009] The utility model discloses a glue mixing head and glue injection gun, which overcome the poor universality of the prior art device that is only suitable for specific glue bottles, and have strong universality and convenient installation.

[0010] To achieve the above-mentioned purpose, the technical scheme of a glue mixing head comprises a connecting pipe and a mixing mechanism. One end of the connecting pipe is used for introducing glue. The mixing mechanism has a communicating input end and output end respectively. The other end of the connecting pipe is in communication with the input end. A stirring structure for dynamically stirring glue is arranged in the mixing mechanism.

[0011] In the technical scheme, the glue storage bottle is a container for storing two-component glue in the prior art, which has a two-in-one glue outlet. The connecting pipe of the glue mixing head of the technical scheme is connected with the glue outlet of the glue storage bottle. In use, the glue in the glue storage bottle is extruded from the glue outlet and enters the mixing mechanism along the connecting pipe. Then, under the stirring action of the stirring structure, dynamic mixing of the two-component glue is realized. Finally, the glue is extruded from the output end of the mixing mechanism. The technical scheme can adapt to different models of glue bottles, has strong universality and good mixing effect.

[0012] As a preferred scheme, in order to realize stirring and mixing of two-component glue, the mixing mechanism further comprises a mixing pipe and a driving device. The mixing pipe has a mixing channel for glue passing. The input end and the output end are respectively arranged at two ends of the mixing channel. The stirring structure is arranged in the mixing channel. The driving device is connected with the mixing pipe. The power output end of the driving device is connected with the stirring structure. Glue enters the mixing channel through the input end. The driving device drives the stirring structure to rotate, so as to realize dynamic mixing in the conveying process of the glue, and the mixing effect is good.

[0013] As a preferred solution, in order to facilitate the delivery of the glue, the mixing tube is provided with an opening near one end of the output end, which is in communication with the mixing channel, and a glue nozzle corresponding to the position of the output end is detachably connected to the opening. The glue nozzle can be replaced according to the use scene, and the detachable design of the glue nozzle can facilitate the cleaning of the residual glue in the mixing channel, thereby avoiding the blockage caused by the solidification of the glue.

[0014] As a preferred solution, the stirring structure includes a rotating shaft and a plurality of stirring blades uniformly arranged on the rotating shaft. The power output end of the driving device is connected with the rotating shaft, and the driving device drives the rotating shaft to rotate, so that the stirring blades on the rotating shaft dynamically mix the glue in the mixing channel.

[0015] As a preferred solution, in order to ensure uniform mixing of the glue, the stirring blades are helical. The helical stirring blades can assist in the delivery of the glue while stirring, which is helpful for the delivery of high-viscosity glue.

[0016] As a preferred solution, the arrangement of adjacent stirring blades is perpendicular to each other in the axial direction of the rotating shaft. This design can improve the stirring efficiency, push the glue in different directions, increase the complexity of the movement path of the glue, and improve the mixing effect. It can also reduce dead angles, cover more areas through the movement of the stirring blades in different directions, avoid un-mixed dead angles in the mixing channel, evenly distribute the stress, reduce local stress concentration, prolong the service life, enhance the shear force, prevent the accumulation of glue on the stirring blades, and maintain the continuity of the stirring process.

[0017] As a preferred solution, the connecting pipe is rotatably connected with a connecting piece near one end of the glue storage bottle. The connecting piece is screwed with the glue outlet of the glue storage bottle. The connecting piece and the glue outlet of the glue storage bottle are matched, which can increase the reliability of the connection between the connecting pipe and the glue storage bottle, and avoid the leakage of the glue.

[0018] As a preferred solution, in order to ensure the smoothness of the delivery of the two-component glue and avoid the local reaction caused by the contact of the glue that has not been mixed, the connecting pipe has two separated delivery channels inside. The two delivery channels correspond to the glue outlets respectively. The middle part of the connecting pipe is bent at right angles. The output end is perpendicular to the input end. At this time, the mixing mechanism is located above the glue storage bottle. This design can make the overall structure of the glue mixing head and the glue storage bottle more compact, reduce the overall length, facilitate the construction, and increase the complexity of the movement path of the glue through the bending design of the connecting pipe, thereby improving the mixing effect.

[0019] As a preferred solution, the mixing pipe is provided with a temperature control assembly, the temperature control assembly comprises a heating coil and a temperature sensor, the heating coil is electrically connected with the temperature sensor, the heating coil is arranged around the mixing pipe, and the temperature sensor cooperates with the heating coil to adjust the temperature of the colloid in the mixing channel, so that the temperature of the colloid is kept in a specific range to improve the fluidity of the high-viscosity colloid.

[0020] To achieve the above object, the colloid mixing and dispensing gun comprises the colloid mixing head, a colloid storage bottle and a gun body, the colloid mixing head is installed on the glue outlet of the colloid storage bottle, and the colloid storage bottle is installed on the gun body.

[0021] In the technical solution, the gun body is used for extruding the colloid in the colloid storage bottle from the glue outlet, the colloid mixing head can be used only by being connected with the colloid storage bottle, and the installation of the colloid mixing head does not interfere with the gun body, so that the gun is versatile and convenient to install.

[0022] Compared with the prior art, the colloid mixing and dispensing gun has the following beneficial effects:

[0023] 1. The colloid mixing head is connected with the glue outlet of the colloid storage bottle through the connecting pipe, and then dynamically mixed through the mixing mechanism, so that the gun is versatile, can be compatible with different types of colloid storage bottles, has good mixing effect and high mixing efficiency.

[0024] 2. The driving device of the mixing mechanism drives the stirring blades to stir and mix the two-component colloid, the design that the normal projections of the stirring blades in the axial direction of the rotating shaft are perpendicular to each other can reduce the mixing dead angle, so that the mixing of the two-component colloid is more uniform, and the design can also prevent the colloid from accumulating and ensure the continuity of the mixing and conveying process.

[0025] 3. The connecting pipe cleverly utilizes the space structure through the design of the middle bending, avoids that the installation positions of the mixing mechanism and the colloid storage bottle are located on a straight line, reduces the overall length, makes the overall structure more compact, and is convenient for the gluing operation. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structure schematic view of the colloid mixing head of the utility model;

[0027] Figure 2 is a structure schematic view of the stirring structure;

[0028] Figure 3 is a structure schematic view of the connecting pipe;

[0029] Figure 4 is a structure schematic view of the colloid storage bottle;

[0030] Figure 5This is a schematic diagram of the structure of the colloid mixing and glue dispensing gun of this utility model;

[0031] Figure 6 yes Figure 5 A diagram from another perspective.

[0032] In the diagram: 1. Connecting pipe; 11. Connector; 12. Conveying channel; 2. Mixing mechanism; 21. Mixing pipe; 211. Mixing channel; 212. Input end; 213. Output end; 214. Opening; 22. Stirring structure; 221. Rotating rod; 222. Stirring blade; 23. Drive device; 24. Coupling; 25. Mounting bracket; 3. Glue storage bottle; 31. Glue outlet; 4. Glue nozzle; 5. Glue gun body. Detailed Implementation

[0033] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, 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. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0034] 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," "right," "long," and "short" 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 component 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.

[0035] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0036] Example 1:

[0037] like Figures 1 to 4 As shown, this embodiment provides a colloid mixing head, including a connecting tube 1 and a mixing mechanism 2. One end of the connecting tube 1 is used to introduce colloid, and the mixing mechanism 2 has an input end 212 and an output end 213 that are connected to each other. The other end of the connecting tube 1 is connected to the input end 212. The mixing mechanism 2 is provided with a stirring structure 22 for dynamically stirring the colloid.

[0038] In this embodiment, as Figure 4As shown, the glue storage bottle 3 is a glue storage container commonly used in the prior art, which has two separated chambers for storing glue of different components, wherein the glue storage bottle 3 has passages respectively communicating with the two chambers, one end of the passage is provided with a glue outlet 31, and the glue outlet 31 is provided with external threads for mounting a glue nozzle.

[0039] Specifically, the mixing mechanism 2 further comprises a mixing pipe 21 and a driving device 23, the mixing pipe 21 has a mixing passage 211 for passing glue, an input end 212 and an output end 213 are respectively arranged at two ends of the mixing passage 211, a stirring structure 22 is arranged in the mixing passage 211, the driving device 23 is connected with the mixing pipe 21, a power output end of the driving device 23 extends into the mixing passage 211 and is connected with the stirring structure 22.

[0040] In the embodiment, the mixing passage 211 is arranged along the axial direction of the mixing pipe 21, the input end 212 is arranged at the bottom of the mixing pipe 21, the output end 213 is arranged at the end of the mixing pipe 21, the driving device 23 is a motor, which is connected with a power supply and a speed regulating switch, the stirring speed of the stirring structure 22 can be adjusted through the speed regulating switch, one end of the mixing pipe 21 is connected with a mounting bracket 25, the driving device 23 is mounted on the mounting bracket 25, and the driving device 23 is connected with the stirring structure 22 through a shaft coupling 24.

[0041] Specifically, one end of the mixing pipe 21 close to the output end 213 is provided with an opening 214 communicating with the mixing passage 211, and a glue nozzle 4 corresponding to the position of the output end 213 is detachably connected to the opening 214.

[0042] In the embodiment, the opening 214 is provided with external threads, the glue nozzle 4 is provided with internal threads matched with the external threads, and the residual glue in the mixing passage 211 can be cleaned and the maintenance of the stirring structure 22 can be facilitated by detaching the glue nozzle 4.

[0043] Specifically, as shown, Figure 2 The stirring structure 22 comprises a rotating rod 221 and five stirring blades 222, the stirring blades 222 are uniformly arranged on the rotating rod 221, and the power output end of the driving device 23 is connected with the rotating rod 221.

[0044] In the embodiment, the stirring blades 222 are helical.

[0045] In the embodiment, the arrangement forms of the adjacent stirring blades 222 are perpendicular to each other in the orthogonal projection in the axial direction of the rotating rod 221.

[0046] Specifically, the connecting pipe 1 is rotatably connected with a connecting piece 11 near one end of the glue storage bottle 3, and the connecting piece 11 is screwed with the glue outlet 31 of the glue storage bottle 3.

[0047] In the embodiment, the connecting piece 11 is screwed with the external thread on the glue outlet 31.

[0048] In the embodiment, as shown in the figure, Figure 3 The connecting pipe 1 has two separated conveying channels 12 inside, and the two conveying channels 12 correspond to the glue outlet 31 respectively, so as to ensure the smoothness of the two-component glue conveying and avoid the local reaction caused by the contact of the glue which has not been mixed.

[0049] Embodiment 2:

[0050] The embodiment is similar to the embodiment 1, and the difference is that the mixing pipe 21 is provided with a temperature control assembly in the embodiment, the temperature control assembly includes a heating coil and a temperature sensor (not shown in the figure), the heating coil is electrically connected with the temperature sensor, and the heating coil is arranged around the mixing pipe 21.

[0051] In the embodiment, the temperature sensor is a PID temperature control module, and the heating coil and the temperature sensor are connected with the power supply after the driving device 23.

[0052] Embodiment 3:

[0053] As shown in the figure, Figure 5 , 6 The embodiment provides a glue mixing and dispensing gun, which includes the glue mixing head and further includes a glue storage bottle 3 and a dispensing gun body 5.

[0054] In the embodiment, the glue mixing head and the glue nozzle are installed in the same way, and the glue mixing head can be used with different glue storage bottles 3 and dispensing gun bodies 5, so the universality is high.

[0055] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as the limitation of the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model.

[0056] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. A colloid mixing head, characterized in that, It includes a connecting pipe (1) and a mixing mechanism (2). One end of the connecting pipe (1) is used to introduce colloid. The mixing mechanism (2) has an input end (212) and an output end (213) that are connected to each other. The other end of the connecting pipe (1) is connected to the input end (212). The mixing mechanism (2) is provided with a stirring structure (22) for dynamically stirring the colloid.

2. The colloid mixing head according to claim 1, characterized in that, The mixing mechanism (2) further includes a mixing tube (21) and a driving device (23). The mixing tube (21) has a mixing channel (211) through which the colloid passes. The input end (212) and the output end (213) are respectively located at both ends of the mixing channel (211). The stirring structure (22) is located inside the mixing channel (211). The driving device (23) is connected to the mixing tube (21), and the power output end of the driving device (23) is connected to the stirring structure (22).

3. A colloid mixing head according to claim 2, characterized in that, The mixing tube (21) has an opening (214) at one end near the output end (213) that communicates with the mixing channel (211). A nozzle (4) corresponding to the position of the output end (213) is detachably connected to the opening (214).

4. A colloid mixing head according to claim 2, characterized in that, The stirring structure (22) includes a rotating rod (221) and several stirring blades (222). The stirring blades (222) are evenly arranged on the rotating rod (221), and the power output end of the driving device (23) is connected to the rotating rod (221).

5. A colloid mixing head according to claim 4, characterized in that, The stirring blade (222) is spiral-shaped.

6. A colloid mixing head according to any one of claims 4 or 5, characterized in that, The adjacent stirring blades (222) are arranged such that their orthogonal projections in the axial direction of the rotating rod (221) are perpendicular to each other.

7. A colloid mixing head according to claim 1, characterized in that, The connecting tube (1) is rotatably connected to a connector (11) at one end near the glue storage bottle (3), and the connector (11) is used to screw onto the glue storage bottle (3).

8. A colloid mixing head according to claim 1, characterized in that, The connecting tube (1) has two separate conveying channels (12) inside, and the two conveying channels (12) correspond to the glue outlet 31 respectively. The middle part of the connecting tube (1) is bent at a right angle, and the output end (213) is perpendicular to the input end (212).

9. A colloid mixing head according to claim 1, characterized in that, The mixing tube (21) is provided with a temperature control component, which includes a heating coil and a temperature sensor. The heating coil is electrically connected to the temperature sensor and is arranged around the periphery of the mixing tube (21).

10. A glue-mixing and dispensing gun, characterized in that, The device includes the colloid mixing head as described in any one of claims 1 to 9, and further includes a glue storage bottle (3) and a glue gun body (5), wherein the colloid mixing head is mounted on the glue outlet (31) of the glue storage bottle (3), and the glue storage bottle (3) is mounted on the glue gun body (5).

Images