Glue injection head with self-cleaning function

Abstract

The utility model discloses a glue injection head with a self-cleaning function, and relates to the technical field of glue injection, the glue injection head comprises a glue injection cylinder, a glue injection head body and a liquid inlet hole, the glue injection head body comprises a fixed head, a cleaning groove is arranged in a glue storage groove, a glue placing chamber is arranged at the lower end of the glue storage groove, and a sliding block is arranged in the cleaning groove; the sliding block is connected with a push rod; a runner is arranged between the glue storage tank and the glue placing chamber; a liquid inlet pipe is arranged on one side of the cleaning tank; a dispensing groove is formed below the glue placing chamber; cleaning pipes are symmetrically arranged at two ends of the fixing head. According to the glue removing device, glue removing cleaning liquid is input through the liquid inlet hole, and the glue removing cleaning liquid can dissolve solidified glue; the glue removing cleaning liquid can enter the glue dispensing groove through the liquid inlet pipes at the two ends of the cleaning groove, meanwhile, the gravity of the glue removing cleaning liquid can press the sliding block to move downwards to drive the push rod to move downwards, and in the process that the glue removing cleaning liquid dissolves glue on the glue dispensing groove, the push rod pushes dissolved glue or some glue which is not firmly bonded to fall off from the inner wall of the glue dispensing groove. And the colloid can be completely cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of glue injection, in particular to a glue injection head with a self-cleaning function. Background Art

[0002] A glue dispenser is a device used to apply glue or adhesive to the surface of a workpiece during the manufacturing process. It is typically used in automated production lines to precisely and efficiently inject glue or adhesive onto the components to be bonded, achieving the goal of securing, sealing, or connecting. While the operation and design of a glue dispenser vary depending on the specific production requirements and workpiece characteristics, they generally all provide functions such as controlling glue flow, applying glue evenly, and precisely positioning the glue application point. Glue dispensers are used in a wide range of industries, including automotive manufacturing, electronics production, and packaging.

[0003] After long-term operation, a thick layer of colloid will remain on the inner wall of the existing spray head. The residual colloid is extremely difficult to clean after hardening, and it cannot be completely cleaned even if it is heated again. If the injection head with residual colloid continues to be used, it will have a great impact on the quality of the injected product. If the injection head is replaced frequently, it will cause waste and increase production costs.

[0004] The prior art proposes a Chinese patent with publication number CN210230475U to address the above-mentioned technical problems. The technical solution disclosed in this patent document is as follows: it includes a glue injection head body and a glue spray nozzle, the glue injection head body is provided with a cavity for storing glue, the glue spray nozzle is provided at one end of the glue injection head body, and the glue spray nozzle is provided with a through hole in the middle thereof, which communicates with the cavity. It also includes a spray gun head and an air pump, one end of the spray gun head extends into the cavity, and the nozzle of the spray gun head is parallel to the through hole. The utility model has a simple structure and heats the glue by a heating plate, which improves the fluidity of the glue and reduces the residue. While using high-pressure gas as the injection power, it can also remove the residue on the inner wall of the glue injection head by high pressure, ensuring the smooth flow of the channel inside the glue injection head, improving product quality and reducing production costs. However, using the hot melt method, some glue will still remain on the inner wall of the glue spray nozzle, and after cooling, it will still adhere to the inner wall of the glue spray nozzle, which is not completely cleaned. Utility Model Content

[0005] The purpose of the utility model is to provide a glue injection head with a self-cleaning function to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A glue injection head with a self-cleaning function comprises a glue injection cylinder, a glue injection head and a liquid inlet hole, wherein the glue injection cylinder and the glue injection head comprise a fixed head, a glue storage tank being provided in the fixed head, a cleaning tank being provided in the glue storage tank, a glue placing chamber being provided at the lower end of the glue storage tank, a slider being provided in the cleaning tank, and the cleaning tank and the glue placing chamber being separated by the slider; a push rod being connected to the slider, and a spring being sleeved on the push rod; a flow channel being provided between the glue storage tank and the glue placing chamber, and the flow channel is connected to the glue storage tank and the glue placing chamber through the flow channel; a liquid inlet pipe being provided on one side of the cleaning tank, and the liquid inlet pipe is connected to the liquid inlet hole; a glue dispensing tank being provided below the glue placing chamber, and the glue dispensing tank is connected to the glue placing chamber; cleaning pipes are symmetrically provided at both ends of the fixed head, one end of the cleaning pipe is connected to the cleaning pipe, and the other end is connected to the glue dispensing tank.

[0008] When the glue injection head completes the glue injection, some glue will remain in the glue dispensing groove inside the glue injection head. When the temperature of these residual glue drops, they will condense in the glue dispensing groove. During cleaning, the glue removal cleaning liquid is input through the liquid inlet hole. The glue removal cleaning liquid can dissolve the solidified glue; the glue removal cleaning liquid enters the glue dispensing groove through the liquid inlet pipes at both ends of the cleaning groove. When the glue removal cleaning liquid enters the liquid inlet pipe, the gravity of the glue removal cleaning liquid will press the slider to move downward and drive the push rod to move downward. In the process of dissolving the colloid on the glue dispensing groove, the push rod pushes the dissolved colloid or some loosely bonded colloid to fall off from the inner wall of the glue dispensing groove, so that the colloid is cleaned more completely.

[0009] A further improvement of the technical solution of the present utility model is that a cutting plate is fixedly connected to the bottom end of the push rod.

[0010] With the above technical solution, after the glue solidifies, the force of the push rod may not be able to push the solidified glue adhered to the dispensing tank. As a result, the glue flowing into the dispensing tank through the cleaning tube will react at the top of the solidified glue, which is inefficient. By providing a cutting plate with a sharp incision, the push rod descends and drives the cutting plate to cut the glue, so that a notch can be cut out of the solidified glue, increasing the reaction area between the glue removal cleaning liquid and the glue, and improving the cleaning effect.

[0011] A further improvement of the technical solution of the present utility model is that: the cutting plate comprises a cutting block, the cutting block is fixedly connected to the push rod, a plurality of leakage holes are opened on the cutting block, and the bottom end of the cutting block is a cutting surface.

[0012] The above technical solution is adopted. In this solution, when the push rod pushes the cut block, the cut surface scrapes the colloid on the dispensing groove. The leakage holes on the cut block and the shape of the cut block can allow the degumming cleaning liquid to flow into the dispensing groove.

[0013] A further improvement of the technical solution of the present invention is that the initial position of the slider is located above the flow channel.

[0014] According to the above technical solution, during glue injection, the glue enters the glue injection groove through the glue injection cylinder and then enters the glue placement chamber through the flow channel. Therefore, the slider is initially positioned above the flow channel to prevent the slider from blocking the flow channel.

[0015] A further improvement of the technical solution of the present utility model is that the initial position of the cutting plate is located in the glue placement chamber, and the cutting plate is located above the connection point between the glue dispensing groove and the glue placement chamber.

[0016] The above technical solution is adopted, in which the initial position of the cutting plate is set in the glue placement chamber, and the cutting plate is above the connection between the glue dispensing groove and the glue placement chamber, so that the cutting plate will not block the connection between the glue dispensing groove and the glue placement chamber, thereby reducing the efficiency of glue dispensing.

[0017] A further improvement to the technical solution of this utility model is that the cleaning tube is provided with a glue return structure near the glue dispensing groove, which can prevent glue in the glue dispensing groove from entering the cleaning tube on the other side of the glue return structure. The glue return structure includes a block, above which is provided a baffle, which is hingedly connected to the cleaning tube; the connection between the cleaning tube and the glue dispensing groove is a reflux groove, and the block is fixedly connected to the connection between the cleaning tube and the reflux groove, and the baffle is provided on the side of the block near the glue dispensing groove; the height of the block is higher than the lowest end of the baffle that naturally falls.

[0018] The above-mentioned technical solution is adopted. In this solution, a block and a baffle are set. When the cleaning liquid enters the cleaning tube, the baffle is hinged to the upper end of the connecting groove, so the gravity of the cleaning liquid can push the baffle open, allowing the cleaning liquid to flow into the glue dispensing groove. During glue dispensing, the glue entering the glue dispensing groove may enter the cleaning tube and block the cleaning tube after condensation. By setting the block, the glue will squeeze the baffle when flowing in the connecting groove, and the baffle will be blocked by the block so that the glue cannot enter the cleaning tube, thereby preventing the condensation tube from being blocked.

[0019] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0020] 1. The utility model provides a glue injection head with a self-cleaning function. Glue removal cleaning liquid is input through the liquid inlet hole. The glue removal cleaning liquid can dissolve solidified glue. The glue removal cleaning liquid enters the glue dispensing tank through the liquid inlet pipes at both ends of the cleaning tank. When the glue removal cleaning liquid enters the liquid inlet pipe, the gravity of the glue removal cleaning liquid presses the slider to move downward and drives the push rod to move downward. In the process of dissolving the colloid on the glue dispensing tank by the glue removal cleaning liquid, the push rod pushes the dissolved colloid or some loosely bonded colloid to fall off from the inner wall of the glue dispensing tank, so that the colloid is cleaned more completely.

[0021] 2. The utility model provides a glue injection head with a self-cleaning function. By setting a block and a baffle, when the cleaning liquid enters the cleaning pipe, the baffle is hinged to the upper end of the connecting groove, so the gravity of the cleaning liquid can push the baffle to open, allowing the cleaning liquid to flow into the glue dispensing groove. During glue dispensing, the glue entering the glue dispensing groove may enter the cleaning pipe and block the cleaning pipe after condensation. By setting the block, the glue will squeeze the baffle when flowing in the connecting groove, and the baffle will be blocked by the block so that the glue cannot enter the cleaning pipe, thereby preventing the condensation pipe from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a structural diagram of the glue injection head of the utility model;

[0025] Figure 3 This is a schematic diagram of the first cross-sectional structure of the present utility model;

[0026] Figure 4 This is a schematic diagram of the cutting structure of the utility model;

[0027] Figure 5 This is a schematic diagram of the second cross-sectional structure of the glue injection head of the present utility model;

[0028] Figure 6 This is an enlarged structural diagram of point A of the utility model

[0029] In the figure: 1. Glue injection cylinder; 2. Glue injection head body; 3. Fixed head; 4. Glue storage tank; 5. Cleaning tank; 6. Glue placement chamber; 7. Slider; 8. Runner; 9. Liquid inlet; 10. Push rod; 11. Glue dispensing tank; 12. Cleaning tube; 13. Cutting plate; 14. Block; 15. Baffle; 16. Reflux tank; 17. Spring; 18. Cutting block; 19. Leak hole; 20. Cut surface. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the embodiments:

[0031] Example 1

[0032] like Figure 1-5As shown, the utility model provides a self-cleaning glue injection head body 2, including a glue injection cylinder 1, a glue injection head body 2 and a liquid inlet hole 9. Between the glue injection cylinder 1 and the glue injection head body 2, the glue injection head body 2 includes a fixed head 3, a glue storage tank 4 is provided in the fixed head 3, a cleaning tank 5 is provided in the glue storage tank 4, a glue placement chamber 6 is provided at the lower end of the glue storage tank 4, a slider 7 is provided in the cleaning tank 5, and the cleaning tank 5 and the glue placement chamber 6 are separated by the slider 7; a push rod 10 is connected to the slider 7. A spring 17 is sleeved on the push rod 10; a flow channel 8 is provided between the glue storage tank 4 and the glue placement chamber 6, and the flow channel 8 is connected to the glue storage tank 4 and the glue placement chamber 6 through the flow channel 8; a liquid inlet pipe is provided on one side of the cleaning tank 5, and the liquid inlet pipe is connected to the liquid inlet hole 9; a glue dispensing tank 11 is provided below the glue placement chamber 6, and the glue dispensing tank 11 is connected to the glue placement chamber 6; cleaning pipes 12 are symmetrically provided at both ends of the fixed head 3, one end of the cleaning pipe 12 is connected to the cleaning pipe 12, and the other end is connected to the glue dispensing tank 11.

[0033] In this embodiment, after the glue injection of the glue injection head body 2 is completed, some glue will remain in the glue dispensing groove 11 in the glue injection head body 2. After the temperature of these residual glue drops, they will condense in the glue dispensing groove 11. During cleaning, the glue removal cleaning liquid is input through the liquid inlet hole 9, and the glue removal cleaning liquid can dissolve the solidified glue; the glue removal cleaning liquid will enter the glue dispensing groove 11 through the liquid inlet pipes at both ends of the cleaning groove 5. When the glue removal cleaning liquid enters the liquid inlet pipe, the gravity of the glue removal cleaning liquid will press the slider 7 to move downward and drive the push rod 10 to move downward. In the process of dissolving the colloid on the glue dispensing groove 11 by the glue removal cleaning liquid, the push rod 10 pushes the dissolved or loosely bonded colloid to fall off from the inner wall of the glue dispensing groove 11, so that the colloid is cleaned more completely.

[0034] In this embodiment, preferably, a cutting plate 13 is fixedly connected to the bottom end of the push rod 10 .

[0035] After the glue solidifies, the force of the push rod 10 may not be able to push the solidified glue adhered to the glue dispensing tank 11, so that the glue flowing into the glue dispensing tank 11 through the cleaning tube 12 will react at the top of the solidified glue, which is too inefficient. By providing a cutting plate 13 with a sharp incision, the push rod 10 descends and drives the cutting plate 13 to cut the glue, so that a groove can be cut out of the solidified glue, increasing the reaction area between the glue removal cleaning liquid and the glue, and improving the cleaning effect.

[0036] The cutting plate 13 includes a cutting block 18 , which is fixedly connected to the push rod 10 . A plurality of leakage holes 19 are formed on the cutting block 18 , and a cutting surface 20 is formed at the bottom end of the cutting block 18 .

[0037] When the push rod 10 pushes the cut block 18 , the cut surface 20 scrapes the colloid on the glue dispensing groove 11 . The leakage hole 19 on the cut block 18 and the shape of the cut block 18 can allow the glue removal cleaning liquid to flow down into the glue dispensing groove 11 .

[0038] Preferably, the initial position of the slider 7 is above the flow channel 8 .

[0039] During glue injection, the glue enters the glue injection groove through the glue injection cylinder 1 and enters the glue placement chamber 6 through the flow channel 8, so the slider 7 is initially positioned above the flow channel 8 to prevent the slider 7 from blocking the flow channel 8.

[0040] Example 2

[0041] Based on Example 1, the present invention provides a technical solution: preferably, the initial position of the cutting plate 13 is located in the glue placement chamber 6, and the cutting plate 13 is located above the connection point between the glue dispensing groove 11 and the glue placement chamber 6.

[0042] In this embodiment, the cutting plate 13 is initially positioned in the glue chamber 6, and the cutting plate 13 is located above the connection between the glue dispensing groove 11 and the glue chamber 6, so that the cutting plate 13 does not block the connection between the glue dispensing groove 11 and the glue chamber 6, thereby reducing the efficiency of glue dispensing.

[0043] Example 3

[0044] like Figure 5 As shown, based on Example 1, the present invention provides a technical solution: preferably, the cleaning tube 12 is provided with a glue return structure near the glue dispensing groove 11, and the glue return structure can prevent the glue in the glue dispensing groove 11 from entering the cleaning tube 12 on the other side of the glue return structure. The glue return structure includes a block 14, a baffle 15 is provided above the block 14, and the baffle 15 is hinged to the cleaning tube 12; the connection point between the cleaning tube 12 and the glue dispensing groove 11 is a reflux groove 16, the block 14 is fixedly connected to the connection point between the cleaning tube 12 and the reflux groove 16, and the baffle 15 is provided on the side of the block 14 near the glue dispensing groove 11; the height of the block 14 is higher than the bottom end where the baffle 15 naturally falls.

[0045] By setting the block 14 and the baffle 15, when the cleaning liquid enters the cleaning pipe, the baffle 15 is hinged to the upper end of the connecting groove, so the gravity of the cleaning liquid can push the baffle 15 to open, allowing the cleaning liquid to flow into the glue dispensing groove 11. During glue dispensing, the glue entering the glue dispensing groove 11 may enter the cleaning pipe 12 and block the cleaning pipe 12 after condensation. By setting the block 14, the glue will squeeze the baffle 15 when flowing in the connecting groove, and the baffle 15 will be blocked by the block 14 so that the glue cannot enter the cleaning pipe 12, thereby preventing the condensation pipe from being blocked.

[0046] The working principle of the glue injection head body 2 with self-cleaning function will be described in detail below.

[0047] like Figure 1-5 As shown, after the glue injection of the glue injection head body 2 is completed, some glue will remain in the glue dispensing groove 11 in the glue injection head body 2. After the temperature of these residual glue drops, they will condense in the glue dispensing groove 11. During cleaning, a glue removal cleaning liquid is input through the liquid inlet hole 9, and the glue removal cleaning liquid can dissolve the solidified glue; when the cleaning liquid enters the cleaning pipe, the baffle 15 is hinged to the upper end of the connecting groove, so the gravity of the cleaning liquid can push the baffle 15 to open, allowing the cleaning liquid to flow into the glue dispensing groove 11, and during glue dispensing, the glue entering the glue dispensing groove 11 may enter the cleaning pipe 12, and condense and block the cleaning pipe 12. By setting the block 14, the glue is prevented from flowing into the cleaning pipe 12. When the glue flows in the connecting groove, the baffle 15 will be squeezed, and the baffle 15 will be blocked by the block 14 so that the glue cannot enter the cleaning pipe 12, thereby preventing the condensation pipe from being blocked; when the degumming cleaning liquid enters the liquid inlet pipe, the gravity of the degumming cleaning liquid will press the slider 7 to move downward and drive the push rod 10 to move downward. When the push rod 10 pushes the cut block 18, the cut surface 20 scrapes the colloid on the glue dispensing groove 11. The leakage hole 19 on the cut block 18 and the shape of the cut block 18 can allow the degumming cleaning liquid to flow down into the glue dispensing groove 11. After the cut block 18 is scraped and dissolved, or some colloids that are not firmly bonded fall off from the inner wall of the glue dispensing groove 11, the colloid cleaning is more complete.

[0048] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A glue injection head with a self-cleaning function, comprising a glue injection barrel (1), a glue injection head body (2), and a liquid inlet hole (9); characterized in that: The glue injection head body (2) comprises a fixed head (3), a glue storage tank (4) is provided in the fixed head (3), a cleaning tank (5) is provided in the glue storage tank (4), a glue placement chamber (6) is provided at the lower end of the glue storage tank (4), a slider (7) is provided in the cleaning tank (5), and the cleaning tank (5) and the glue placement chamber (6) are separated by the slider (7); a push rod (10) is connected to the slider (7); a flow channel (8) is provided between the glue storage tank (4) and the glue placement chamber (6), and the flow channel (8) is connected to the glue storage tank (4) and the glue placement chamber (6) through a flow channel (8); a liquid inlet pipe is provided on one side of the cleaning tank (5), and the liquid inlet pipe is communicated with the liquid inlet hole (9); a glue dispensing tank (11) is provided below the glue placement chamber (6), and the glue dispensing tank (11) is communicated with the glue placement chamber (6); cleaning pipes (12) are symmetrically provided at both ends of the fixed head (3), and one end of the cleaning pipe (12) is communicated with the cleaning pipe (12), and the other end is communicated with the glue dispensing tank (11).

2. The self-cleaning dispensing head according to claim 1, characterized in that: The bottom end of the push rod (10) is fixedly connected with a cutting plate (13).

3. The self-cleaning dispensing head according to claim 2, characterized in that: The cutting plate (13) is initially located in the glue placement chamber (6), and the cutting plate (13) is located above the connection point between the glue dispensing groove (11) and the glue placement chamber (6).

4. The self-cleaning dispensing head according to claim 3, characterized in that: The cleaning tube (12) is provided with a glue return structure near the glue dispensing groove (11), and the glue return structure can prevent glue in the glue dispensing groove (11) from entering the cleaning tube (12) on the other side of the glue return structure.

5. The self-cleaning dispensing head according to claim 4, characterized in that: The glue return structure comprises a block (14), a baffle (15) is provided above the block (14), and the baffle (15) is hinged to the cleaning pipe (12); the connection point between the cleaning pipe (12) and the glue dispensing groove (11) is a return groove (16), the block (14) is fixedly connected to the connection point between the cleaning pipe (12) and the return groove (16), and the baffle (15) is provided on a side of the block (14) close to the glue dispensing groove (11); the height of the block (14) is higher than the lowest end of the baffle (15) that naturally falls.

6. The self-cleaning dispensing head according to claim 5, characterized in that: A spring (17) is sleeved on the push rod (10).

7. The self-cleaning dispensing head according to claim 1, characterized in that: The initial position of the slider (7) is located above the flow channel (8).

8. The self-cleaning dispensing head according to claim 2, characterized in that: The cutting plate (13) comprises a cutting block (18), the cutting block (18) is fixedly connected to the push rod (10), a plurality of leakage holes (19) are opened on the cutting block (18), and the bottom end of the cutting block (18) is a cutting surface (20).

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