Dual-purpose glue dispensing gun assembly for glue discharging and glue backflow

Abstract

The utility model relates to a dual-purpose glue dispensing gun assembly for glue discharging and glue backflow, which comprises a glue inlet valve arranged on a glue inlet valve seat, the glue inlet valve is fixedly connected with a glue dispensing valve on the outer side, a glue dispensing valve head is arranged on the inner side of a valve body of the glue dispensing valve, and the glue dispensing valve head is used for controlling the flow velocity of glue flowing downwards from a flow injection channel in the glue dispensing valve. And finally, the glue flows out through the dispensing pipe. A glue blocking valve head is arranged on the glue inlet valve, a backflow channel is further arranged in the glue inlet valve, and the tail end of the backflow channel is connected outwards. A horizontal overflowing channel is arranged in the glue inlet valve seat, the tail end of the horizontal overflowing channel is communicated with the injection channel, and the middle section of the horizontal overflowing channel is communicated with the backflow channel; according to the glue gun, the glue inlet valves which are communicated with each other are arranged on the periphery of the glue dispensing valve, and the glue dispensing valve and the glue inlet valves are respectively controlled, so that the effects of glue inlet, glue dispensing and glue outlet backflow are controlled, the glue gun is prevented from being scrapped due to excessive solidification of glue, the service life of the glue gun is effectively prolonged, and the scrapping risk is reduced.

Description

Technical Field

[0001] The utility model relates to the field of glue dispensing technology equipment, in particular to a glue dispensing gun component which can be used for glue dispensing and glue reflowing. Background Art

[0002] Glue dispenser, also known as glue coating machine, glue dripping machine, glue spraying machine, etc., is an automated machine that controls fluids and drips and applies fluids to the surface or inside of products. Glue dispenser is mainly used for the precise dotting, injection, coating and dripping of glue, paint and other liquids in product processes to the precise position of each product, and can be used to achieve dotting, drawing lines, circles or arcs.

[0003] Traditional dispensing machines are often only used during the dispensing process. Therefore, when the dispensing machine is not in use, the glue of the paint will accumulate in the glue flow aisle. When it is not used for a period of time, the glue may be blocked in the aisle, resulting in only a small amount of glue flowing out or directly blocking the aisle when it is used again, making it impossible to dispense glue again and the glue gun useless.

[0004] In order to solve the above problems, the utility model provides a glue dispensing gun assembly which can be used for both glue dispensing and glue reflowing. Utility Model Content

[0005] (1) Technical issues to be resolved

[0006] The utility model aims at the above problems in the prior art and provides a glue dispensing gun component which can be reasonably manufactured and used and can be used for both glue dispensing and glue reflow in order to make up for the deficiencies of the prior art.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a dispensing gun assembly for both glue dispensing and glue reflux, comprising a glue inlet valve installed on a glue inlet valve seat, the glue inlet valve being fixedly connected to an outer dispensing valve, a dispensing valve head being arranged inside a valve body of the dispensing valve, the dispensing valve head being used to control the flow rate of the colloid flowing downward from the injection channel inside the dispensing valve, and finally the colloid flowing out through a dispensing tube;

[0009] The glue inlet valve is provided with a glue blocking valve head for controlling the glue to flow into or out of the vertical flow channel, and the inside of the glue inlet valve is also provided with a reflux channel, and the end of the reflux channel is connected to the outside;

[0010] A horizontal flow channel is provided inside the glue inlet valve seat, the end of the horizontal flow channel is connected to the injection channel, and the middle section of the horizontal flow channel is connected to the reflux channel;

[0011] The operations of the glue blocking valve head abutting against the horizontal flow channel and the glue dispensing valve head abutting against the injection channel are performed at different times.

[0012] Preferably, the vertical flow passage is communicated with the reflux passage, and the reflux passage and the vertical flow passage are arranged in parallel, so as to facilitate the quick introduction or export of the colloid.

[0013] Preferably, the end of the reflux channel is communicated with a flow guide port on the surface of the glue inlet valve housing.

[0014] Preferably, a feed port is provided outside the horizontal flow channel, the feed port is connected to an external rubber hose, and the glue inlet diameter of the feed port is larger than the glue outlet diameter toward the horizontal flow channel, so as to facilitate the control of the flow rate of the colloid feed.

[0015] Preferably, the horizontal flow passage and the injection passage are perpendicular to each other, and the horizontal flow passage and the glue dispensing tube are also perpendicular to each other.

[0016] Preferably, the dispensing tube is provided with a syringe-type dispensing tip, which is convenient for small-scale, convenient and controllable dispensing.

[0017] Preferably, at least two glue inlet valves are provided, and a glue dispensing valve for controlling glue discharge is provided between adjacent glue inlet valves, so as to facilitate glue dispensing operation at multiple holes.

[0018] Preferably, each of the glue inlet valves is installed in a circumferential manner on the outside of the glue dispensing valve, so as to facilitate a more reasonable arrangement of the glue valve on the outside of the glue dispensing valve.

[0019] Preferably, an independently controllable horizontal flow channel and injection channel are provided between each of the glue inlet valves and the glue dispensing valve, so that each glue inlet valve can independently control the glue inlet and operate independently, resulting in better use effect and more convenient operation.

[0020] Preferably, the dispensing valve is also installed on the glue inlet valve seat.

[0021] (3) Beneficial effects

[0022] The utility model arranges interconnected glue inlet valves on the periphery of the glue dispensing valve, opens the glue inlet valve to allow the colloid to enter the horizontal flow channel, and then closes the glue inlet valve and opens the glue dispensing valve, thereby controlling the colloid in the horizontal flow channel to flow inward to the glue injection flow channel and to the glue dispensing tube for dispensing; by controlling the closing of the glue dispensing valve and opening the glue inlet valve, the excess colloid is diverted out through the guide port, reducing the blockage of the horizontal flow channel, thereby ensuring that the colloid will not cause the glue gun to be scrapped due to excessive solidification, effectively extending the service life of the glue gun and reducing the risk of scrapping. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 for Figure 1 A front view of

[0025] Figure 3 for Figure 1 Left view;

[0026] Figure 4 for Figure 3 A cross-sectional view of the AA portion;

[0027] Figure 5 for Figure 1 Top view of the .

[0028] The accompanying drawings are marked as follows:

[0029] 1- glue inlet valve, 11- glue plugging valve head, 12- vertical flow channel, 13- reflux channel, 14- flow guide port;

[0030] 2-plastic inlet valve seat, 21-feeding port, 22-horizontal flow channel;

[0031] 3-dispensing valve, 31-injection channel, 32-dispensing valve head;

[0032] 4- Dispensing hose. DETAILED DESCRIPTION

[0033] Combined with Figure 1-5 The utility model is further described with reference to the accompanying drawings and embodiments.

[0034] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "vertical", "horizontal", "up", "down", "front", "back", "left", "right", "top", "bottom", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] like Figure 1-5 As shown, the glue dispensing gun assembly for glue dispensing and glue reflow described in the utility model comprises a glue inlet valve 1 installed on a glue inlet valve seat 2, the glue inlet valve 1 is fixedly connected to a glue dispensing valve 3 on the outside, and for the convenience of installation, the glue dispensing valve 3 is also installed on the glue inlet valve seat 2, so that the glue inlet valve 1 and the glue dispensing valve 3 can form an integral structure of communication control, and a glue dispensing valve head 32 is provided inside the valve body of the glue dispensing valve 3, and the glue dispensing valve head 32 is used to control the flow rate of the colloid flowing downward from the injection channel 31 inside the glue dispensing valve 3, and finally the colloid flows out through the glue dispensing tube 4;

[0036] See Figure 4 The glue inlet valve 1 is provided with a glue blocking valve head 11 for controlling the colloid to flow into or out of the vertical flow channel 12. The glue blocking valve head 11 is mainly used to control the feeding and discharging of the colloid. The specific feeding and discharging methods will be described in detail below. The glue inlet valve 1 is also provided with a reflux channel 13 inside. The end of the reflux channel 13 is connected outwardly, specifically connected to a guide port 14 on the surface of the shell of the glue inlet valve 1. By connecting a guide structure to the outside of the guide port 14, the colloid in the horizontal flow channel 22 is recirculated and recovered to avoid being blocked in the channel. The vertical flow channel 12 is connected to the reflux channel 13, and the reflux channel 13 is arranged in parallel with the vertical flow channel 12.

[0037] A horizontal flow channel 22 is provided inside the glue inlet valve seat 2. The end of the horizontal flow channel 22 is connected to the injection channel 31, and the middle section is connected to the reflux channel 13. This design can, on the one hand, perform glue blocking or reflux operations in the middle section, and on the other hand, guide the colloid into the glue dispensing tube 4 for glue dispensing operations. In addition, the horizontal flow channel 22 is perpendicular to the injection channel 31, and the horizontal flow channel 22 is also perpendicular to the glue dispensing tube 4.

[0038] See Figure 4 In order to achieve a large feed volume but a small discharge volume, a feed port 21 is provided outside the horizontal flow channel 22, and the feed port 21 is connected to an external rubber hose. The feed port 21 has a larger diameter than the discharge port toward the horizontal flow channel 22, and a dispensing hose 4 is provided at the discharge portion with a syringe-type discharge tip;

[0039] In order to achieve the inconsistency between the operation of controlling the dispensing and the operation of controlling the colloid reflux, in actual use, the operations of the glue blocking valve head 11 abutting against the horizontal flow channel 22 and the dispensing valve head 32 abutting against the injection channel 31 are performed at different times, that is, when the glue feed valve is opened, the dispensing valve is closed, and when the dispensing valve is opened, the glue feed valve is closed.

[0040] In addition, in order to improve the efficiency of dispensing operation, this solution also provides the effect of installing several dispensing valves at the same time, see Figure 1 , 2and 4, at least two of the glue inlet valves 1 are provided, and the dispensing valves 3 for controlling the glue discharge are provided between adjacent glue inlet valves 1. The dispensing valves 1 in the attached drawings are provided with two, but in fact, for the convenience of use, each of the glue inlet valves 1 can also be provided with a circumferentially distributed installation on the outside of the dispensing valves 3. In the attached drawings, there are two, so we use two as an example. In order to facilitate the independence of each glue inlet valve and dispensing, an independently controllable horizontal flow channel 22 and an injection channel 31 are provided between each of the glue inlet valves 1 and the dispensing valves 3. See the attached drawings for details. Figure 4 That is, when the glue inlet valve and dispensing valve on one side are opened, the glue inlet valve on the other side is not affected. The dispensing valve in the figure is a two-component dispensing valve.

[0041] Working principle: When the utility model is in use, the glue inlet valve is opened separately to allow the external colloid to enter the horizontal flow channel through the feed port. When the glue is fed, the glue inlet valve is closed and the dispensing valve is opened. After the dispensing valve is opened, the colloid enters the dispensing tube along the glue injection channel and flows out through the syringe end to realize the dispensing operation. When the glue gun assembly is not used but there is excess unused colloid in the channel, the glue inlet valve can be opened by closing the dispensing valve (it should be noted that even if the glue inlet valve is opened, the colloid is not introduced, and the drainage operation needs to be stopped at one end), and a diversion structure is connected to the outside of the diversion port (not drawn in the figure and it is an existing structure, so it will not be described in detail). The colloid in the horizontal flow channel and the colloid remaining in the vertical flow channel are guided out along the reflux channel through the diversion structure, reducing the residual colloid in the channel. At the same time, the colloid can be recycled, saving costs, being green and environmentally friendly, and reducing the situation of glue blockage.

[0042] The above-mentioned embodiments only express the preferred implementation of the utility model, and the description is relatively specific and detailed, but the utility model is not limited to these embodiments. It should be pointed out that for ordinary technicians in this field. Under the premise of not departing from the purpose of the utility model, any improvement made shall fall within the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A glue dispensing gun assembly for both glue dispensing and glue reflow, characterized in that: The invention comprises a glue inlet valve (1) mounted on a glue inlet valve seat (2), the glue inlet valve (1) being fixedly connected to an outer glue dispensing valve (3), a glue dispensing valve head (32) being provided inside a valve body of the glue dispensing valve (3), the glue dispensing valve head (32) being used to control the flow rate of the glue flowing downwardly out of an injection channel (31) inside the glue dispensing valve (3), and finally the glue flowing out through a glue dispensing tube (4); The glue inlet valve (1) is provided with a glue blocking valve head (11) for controlling the glue to flow into or out of the vertical flow channel (12); the glue inlet valve (1) is also provided with a reflux channel (13) inside, and the end of the reflux channel (13) is connected to the outside; A horizontal flow passage (22) is provided inside the glue inlet valve seat (2), wherein the end of the horizontal flow passage (22) is connected to the injection passage (31), and the middle section is connected to the reflux passage (13); The operations of the glue blocking valve head (11) abutting against the horizontal flow passage (22) and the operations of the glue dispensing valve head (32) abutting against the injection passage (31) are performed at different times.

2. A glue dispensing gun assembly for both glue dispensing and glue reflowing according to claim 1, characterized in that: The vertical flow passage (12) is connected to the return passage (13), and the return passage (13) and the vertical flow passage (12) are arranged in parallel.

3. The glue dispensing gun assembly for glue dispensing and glue reflowing according to claim 1, characterized in that: The end of the reflux channel (13) is in communication with a flow guide port (14) on the shell surface of the glue inlet valve (1).

4. The glue dispensing gun assembly for glue dispensing and glue reflowing according to claim 1, characterized in that: A feed port (21) is provided outside the horizontal flow passage (22), the feed port (21) being connected to an external rubber hose, and the diameter of the rubber inlet of the feed port (21) being larger than the diameter of the rubber outlet toward the horizontal flow passage (22).

5. The glue dispensing gun assembly for glue dispensing and glue reflowing according to claim 1, characterized in that: The horizontal flow passage (22) and the injection passage (31) are perpendicular to each other, and the horizontal flow passage (22) and the glue dispensing tube (4) are also perpendicular to each other.

6. The glue dispensing gun assembly for glue dispensing and glue reflowing according to claim 1, characterized in that: The dispensing tube (4) is provided with a syringe-type discharge tip.

7. A glue dispensing gun assembly for both glue dispensing and glue reflowing according to any one of claims 1 to 6, characterized in that: At least two of the glue inlet valves (1) are provided, and a glue dispensing valve (3) for controlling glue discharge is provided between adjacent glue inlet valves (1).

8. The glue dispensing gun assembly for glue dispensing and glue reflowing according to claim 7, characterized in that: Each of the glue inlet valves (1) is installed in a circumferentially distributed manner on the outside of the glue dispensing valve (3).

9. The glue dispensing gun assembly for both glue dispensing and glue reflowing according to claim 8, characterized in that: An independently controllable horizontal flow passage (22) and an injection passage (31) are provided between each of the glue inlet valves (1) and the glue dispensing valve (3).

10. The glue dispensing gun assembly for both glue dispensing and glue reflowing according to claim 9, characterized in that: The glue dispensing valve (3) is also mounted on the glue inlet valve seat (2).

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