A glue injection device

Abstract

The utility model relates to the technical field of glue injection, put forward a kind of glue injection device, including installation shell, including injection pipe, installation shell is equipped with servo motor on the inner side wall away from injection pipe, the output of servo motor is equipped with threaded rod, threaded rod is threadedly connected with push threaded tube, and one end of push threaded tube is equipped with push piston, and the outer wall of push threaded tube is connected with auxiliary plate, the outer wall of installation shell is equipped with controller, and the controller is equipped with forward rotation button and reverse rotation button, and the outer wall of installation shell is equipped with electric line, and forward rotation button and reverse rotation button are connected between electric line and servo motor, the inner side wall of installation shell is equipped with two connecting plates, and the first control button and second control button are respectively installed in the end of two connecting plates in each other close, to make push threaded tube can be automatically stopped when moving to certain position, avoid causing servo motor load too large, reach the purpose of improving equipment stability.

Description

Technical Field

[0001] This utility model relates to the field of glue injection technology, specifically to a glue injection device. Background Technology

[0002] Adhesive is an intermediate that connects two materials. It is mostly in the form of water-based solutions and belongs to the category of fine chemicals. There are many types of adhesives, which are mainly classified according to the adhesive, physical form, curing method, and the material of the objects being bonded. When using adhesives, it is usually necessary to squeeze the adhesive container by hand to squeeze the adhesive onto the area to be bonded. However, this can easily cause uneven dispensing and affect the bonding effect.

[0003] A search revealed a patent publication number CN223264188U published on August 26, 2025, for a photomask bonding and dispensing device. The device is described as comprising an injection tube, a plate, and a housing. The housing contains an electrical control board, and a servo motor is mounted on the inner wall of the housing. The output end of the servo motor is connected to a lead screw, which is threaded onto a rod. A piston is connected to the end of the rod, and the piston is in a sealed sliding connection with the injection tube. A needle is threaded onto the output end of the injection tube, and a guide strip is mounted on the rod.

[0004] While the aforementioned existing technical solutions can dispense adhesive evenly and improve bonding, the device does not automatically stop when the rod moves close to the inner wall of the equipment. The servo motor continues to drive the lead screw to rotate, which can easily cause excessive load on the servo motor and lead to damage, thus reducing the stability of the equipment. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an adhesive injection device that solves the problem mentioned in the background technology that the rod cannot automatically stop when it moves close to the inner wall of the equipment. This problem causes the servo motor to continue driving the lead screw to rotate, which can easily lead to excessive load on the servo motor and damage, thus reducing the stability of the equipment.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: A glue injection device, comprising a mounting shell and an injection tube, one end of which is provided with an auxiliary cylinder, and one end of the auxiliary cylinder is provided with a needle. A mounting plate is fixedly connected to the outer wall of one end of the injection tube, and the mounting plate is bolted to one end of the mounting shell. The mounting shell has a through hole that mates with the injection tube. A servo motor is mounted on the inner wall of the mounting shell away from the injection tube. The output end of the servo motor is provided with a threaded rod, and a pusher threaded tube is threadedly connected to the threaded rod. One end of the pusher threaded tube is provided with a pusher piston that mates with the injection tube. The pusher piston is located outside the mounting shell. An auxiliary plate is fixedly connected to the outer wall of the tube. Two limiting rods that are slidably connected to the auxiliary plate are fixedly connected to the inner wall of the mounting shell. A controller that is electrically connected to the servo motor is installed on the outer wall of the mounting shell. The controller is equipped with a forward rotation button and a reverse rotation button. A connecting wire is provided on the outer wall of the mounting shell. The forward rotation button and the reverse rotation button are connected in parallel between the connecting wire and the servo motor. Two connecting plates are provided on the inner wall of the mounting shell, respectively located on both sides of the auxiliary plate. A first control button and a second control button are respectively installed on the two connecting plates at their closest ends. The first control button and the second control button are electrically connected to the forward rotation button and the reverse rotation button, respectively.

[0009] By adopting the above technical solution, the connecting wire is connected to an external power source. When the operator presses the forward rotation button, the connecting wire supplies power to the servo motor, causing the servo motor to drive the threaded rod to rotate forward. The threaded rod drives the pusher tube to move towards the injection tube, thereby pushing the pusher piston to expel the glue in the injection tube. This ensures that the glue is discharged at a uniform speed. When the pusher piston touches the inner wall of one end of the auxiliary cylinder, the auxiliary plate presses the first control button, thereby cutting off the power between the first control button and the servo motor. This stops the servo motor from rotating forward, thus stopping the pusher tube and the pusher piston from moving. At this point, pressing the forward rotation button will not start the servo motor, indicating that the glue in the injection tube has been discharged. The operator then inserts the needle into the glue. When an operator presses the reverse button, the servo motor starts, driving the threaded rod to reverse. The threaded rod then moves the threaded tube and the pusher piston away from the injection tube, drawing glue into the injection tube. Just as one end of the threaded rod touches the inner wall of one end of the threaded tube, the auxiliary plate presses the second control button. This disconnects the power between the second control button and the servo motor, stopping the servo motor from reversing and halting the movement of the threaded tube and pusher piston. At this point, pressing the reverse button again will not start the servo motor, indicating that the injection tube is full of glue. The pusher piston remains outside the mounting housing, allowing the threaded tube to automatically stop at a certain position, preventing excessive load on the servo motor and improving equipment stability.

[0010] Optionally, the outer wall of the injection tube is threaded near the auxiliary cylinder, and an internally threaded ring is fixedly connected to the auxiliary cylinder, the internally threaded ring being threadedly connected to the injection tube.

[0011] By adopting the above technical solution, when the glue inside the needle hardens and causes the needle to become clogged, the operator can screw on the internal threaded ring to remove it from the injection tube, thus facilitating the replacement of the auxiliary cylinder and the needle.

[0012] Optionally, a sealing gasket is fixedly connected to one end of the injection tube, with one end of the sealing gasket tightly attached to the auxiliary cylinder.

[0013] By adopting the above technical solution, the sealing gasket is used to improve the sealing between the injection tube and the auxiliary cylinder, and to prevent glue from seeping into the threads between the injection tube and the auxiliary cylinder, thereby avoiding the inability to replace the needle.

[0014] Optionally, the bottom end of the mounting plate is provided with a foolproof notch, and a foolproof plug that matches the foolproof notch is fixedly connected to the outer wall of the mounting shell.

[0015] By adopting the above technical solution, the anti-foolproof notch and the anti-foolproof insert are used to initially position the mounting plate when installing the injection tube, thereby facilitating the installation of the mounting plate and improving work efficiency.

[0016] Optionally, the injection tube is provided with a transparent observation window.

[0017] By adopting the above technical solution, the transparent observation window is used to facilitate personnel to observe the amount of glue in the injection tube.

[0018] Optionally, an indicator light is installed on the outer wall of the mounting housing, and the indicator light is electrically connected to the grounding wire.

[0019] By adopting the above technical solution, when the power cord is connected to an external power source, the indicator light will illuminate, making it easier for personnel to judge the power status of the equipment.

[0020] (III) Beneficial Effects

[0021] In summary, this utility model includes at least one of the following beneficial technical effects: The glue injection device connects the connecting wire to an external power source. When the operator presses the forward rotation button, the connecting wire supplies power to the servo motor, causing the servo motor to drive the threaded rod to rotate forward. The threaded rod drives the pusher tube to move towards the injection tube, thereby pushing the pusher piston to extrude the glue in the injection tube, thus ensuring uniform glue discharge. When the pusher piston touches the inner wall of one end of the auxiliary cylinder, the auxiliary plate presses the first control button, thereby disconnecting the power between the first control button and the servo motor, causing the servo motor to stop rotating forward. This stops the pusher tube and the pusher piston from moving. At this point, pressing the forward rotation button again will not start the servo motor, indicating that the glue in the injection tube has been completely discharged. When the needle is inserted into the glue, the operator presses the reverse button to start the servo motor, which drives the threaded rod to reverse. The threaded rod then moves the threaded tube and the pusher piston away from the injection tube, drawing glue into the injection tube. When one end of the threaded rod touches the inner wall of one end of the threaded tube, the auxiliary plate presses the second control button, which disconnects the power between the reverse button and the servo motor. This stops the servo motor from reversing and stops the threaded tube and pusher piston from moving. At this point, pressing the reverse button again will not start the servo motor, indicating that the injection tube is full of glue. The pusher piston is still outside the mounting housing, allowing the threaded tube to stop automatically when it reaches a certain position, preventing excessive load on the servo motor and improving equipment stability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the first side view of the present invention.

[0023] Figure 2 This utility model Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0024] Figure 3 This is a schematic diagram of the second side view of the present invention.

[0025] Figure 4 This is a first cross-sectional view of the present invention.

[0026] Figure 5 This utility model Figure 4 A magnified schematic diagram of the structure at point B in the middle.

[0027] Figure 6 This is a second cross-sectional view of the present invention.

[0028] In the diagram: 1. Mounting housing; 2. Injection tube; 3. Auxiliary cylinder; 4. Needle; 5. Mounting plate; 6. Servo motor; 7. Threaded rod; 8. Push threaded tube; 9. Push piston; 10. Auxiliary plate; 11. Limit rod; 12. Controller; 13. Forward rotation button; 14. Reverse rotation button; 15. Connecting wire; 16. Connecting plate; 17. First control button; 18. Second control button; 19. Internal threaded ring; 20. Sealing gasket; 21. Foolproof insert; 22. Transparent observation window; 23. Indicator light. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Reference Figures 1-6A glue injection device includes a mounting shell 1, an injection tube 2, an auxiliary cylinder 3 at one end of the injection tube 2, a needle 4 at one end of the auxiliary cylinder 3, a mounting plate 5 fixedly connected to the outer wall of one end of the injection tube 2, the mounting plate 5 being bolted to one end of the mounting shell 1, a through hole for cooperating with the injection tube 2 on the mounting shell 1, a servo motor 6 mounted on the inner wall of the mounting shell 1 away from the injection tube 2, a threaded rod 7 at the output end of the servo motor 6, a push threaded tube 8 threadedly connected to the threaded rod 7, a push piston 9 cooperating with the injection tube 2 at one end of the push threaded tube 8, the push piston 9 being located outside the mounting shell 1, an auxiliary plate 10 fixedly connected to the outer wall of the push threaded tube 8, and two auxiliary plates 10 fixedly connected to the inner wall of the mounting shell 1. The auxiliary plate 10 is slidably connected to the limit rod 11. A controller 12, electrically connected to the servo motor 6, is mounted on the outer wall of the mounting housing 1. The controller 12 has a forward rotation button 13 and a reverse rotation button 14. A connecting wire 15 is provided on the outer wall of the mounting housing 1. The forward rotation button 13 and the reverse rotation button 14 are connected in parallel between the connecting wire 15 and the servo motor 6. Two connecting plates 16 are located on either side of the auxiliary plate 10 on the inner side wall of the mounting housing 1. A first control button 17 and a second control button 18 are respectively mounted on the two connecting plates 16 at their closest ends. The first control button 17 and the second control button 18 are electrically connected to the forward rotation button 13 and the reverse rotation button 14, respectively. The connecting wire 15 is connected to an external power source. When a person presses the forward rotation button 13, the connecting wire 15... Wire 15 energizes servo motor 6, causing servo motor 6 to drive threaded rod 7 to rotate forward. Threaded rod 7 drives threaded tube 8 to move towards injection tube 2, thereby pushing pusher piston 9 to expel glue from injection tube 2, ensuring uniform glue discharge. When pusher piston 9 touches the inner wall of one end of auxiliary cylinder 3, auxiliary plate 10 presses the first control button 17, thus disconnecting the power between the first control button 17 and the forward rotation button 13 and servo motor 6. This stops servo motor 6 from rotating forward, and stops the movement of threaded tube 8 and pusher piston 9. At this point, pressing forward rotation button 13 will not start servo motor 6, indicating that glue in injection tube 2 has been discharged. Personnel can then insert needle 4... When the glue is injected, the operator presses the reverse button 14 to start the servo motor 6, which drives the threaded rod 7 to reverse. The threaded rod 7 drives the pusher tube 8 and the pusher piston 9 to move away from the injection tube 2, thereby drawing the glue into the injection tube 2. When one end of the threaded rod 7 touches the inner wall of one end of the pusher tube 8, the auxiliary plate 10 presses the second control button 18, thereby cutting off the power between the reverse button 14 and the servo motor 6. This stops the servo motor 6 from reversing, thus stopping the pusher tube 8 and the pusher piston 9 from moving. At this point, pressing the reverse button 14 will not start the servo motor 6, indicating that the injection tube 2 is full of glue. At this time, the pusher piston 9 is still outside the mounting shell 1.This allows the threaded tube 8 to stop automatically when it reaches a certain position, preventing excessive load on the servo motor 6 and thus improving equipment stability.

[0032] Reference Figures 3-5 The outer wall of the injection tube 2 is threaded near the auxiliary cylinder 3. An internal threaded ring 19 is fixedly connected to the auxiliary cylinder 3. The internal threaded ring 19 is threadedly connected to the injection tube 2. When the glue inside the needle 4 hardens and causes the needle 4 to become blocked, the personnel can screw the internal threaded ring 19 to remove it from the injection tube 2, which facilitates the replacement of the auxiliary cylinder 3 and the needle 4.

[0033] Reference Figure 4 and Figure 5 One end of the injection tube 2 is fixedly connected to a sealing gasket 20. One end of the sealing gasket 20 is in close contact with the auxiliary cylinder 3. The sealing gasket 20 is used to improve the sealing between the injection tube 2 and the auxiliary cylinder 3, and to prevent glue from seeping into the threads between the injection tube 2 and the auxiliary cylinder 3, thereby preventing the needle 4 from being unable to be replaced.

[0034] Reference Figure 1 and Figure 2 The bottom of the mounting plate 5 is provided with a foolproof notch, and a foolproof plug 21 that matches the foolproof notch is fixedly connected to the outer wall of the mounting shell 1. The foolproof notch and the foolproof plug 21 are used to initially position the mounting plate 5 when the injection tube 2 is installed, so as to facilitate the installation of the mounting plate 5 and improve work efficiency.

[0035] Reference Figure 3 The injection tube 2 is equipped with a transparent observation window 22, which is used to facilitate personnel to observe the amount of glue in the injection tube 2.

[0036] Reference Figure 3 An indicator light 23 is installed on the outer wall of the mounting housing 1. The indicator light 23 is electrically connected to the connecting wire 15. When the connecting wire 15 is connected to an external power source, the indicator light 23 lights up, so as to help personnel judge the power status of the equipment.

[0037] In summary, the working principle and process of this glue injection device are as follows: First, the connecting wire 15 is connected to an external power source. When the operator presses the forward rotation button 13, the connecting wire 15 supplies power to the servo motor 6, causing the servo motor 6 to drive the threaded rod 7 to rotate forward. The threaded rod 7 drives the threaded tube 8 to move towards the injection tube 2, thereby pushing the pusher piston 9 to extrude the glue in the injection tube 2, thus ensuring uniform glue discharge. When the pusher piston 9 touches the inner wall of one end of the auxiliary cylinder 3, the auxiliary plate 10 presses the first control button 17, thereby controlling the interaction between the forward rotation button 13 and the servo motor 6. Power is cut off, causing the servo motor 6 to stop rotating forward, thus stopping the movement of the threaded tube 8 and the pusher piston 9. At this point, pressing the forward button 13 will not start the servo motor 6, indicating that the glue in the injection tube 2 has been discharged. The operator inserts the needle 4 into the glue and presses the reverse button 14 to start the servo motor 6, which drives the threaded rod 7 to reverse. The threaded rod 7 drives the threaded tube 8 and the pusher piston 9 to move away from the injection tube 2, thereby drawing glue into the injection tube 2. When one end of the threaded rod 7 touches the inner wall of one end of the threaded tube 8, the auxiliary plate 10 presses the second control button 18, thus activating the second control button 18. Power is cut off between the reverse button 14 and the servo motor 6, causing the servo motor 6 to stop reversing. This stops the movement of the threaded tube 8 and the pusher piston 9. At this point, pressing the reverse button 14 will not start the servo motor 6, indicating that the injection tube 2 is full of glue. The pusher piston 9 remains outside the mounting housing 1, allowing the threaded tube 8 to automatically stop at a certain position, preventing excessive load on the servo motor 6 and improving equipment stability. When the glue inside the needle 4 hardens and clogs the needle 4, the internal threaded ring 19 can be unscrewed to remove it from the injection tube 2. The auxiliary cylinder 3 and needle 4 are replaced to facilitate this. The sealing gasket 20 is used to improve the sealing between the injection tube 2 and the auxiliary cylinder 3, and to prevent glue from seeping into the threads between the injection tube 2 and the auxiliary cylinder 3, so as to avoid the inability to replace the needle 4. The foolproof notch cooperates with the foolproof plug 21 to perform preliminary positioning of the mounting plate 5 when installing the injection tube 2, so as to facilitate the installation of the mounting plate 5 and improve work efficiency. The transparent observation window 22 is used to facilitate personnel to observe the glue volume in the injection tube 2. When the connecting wire 15 is connected to the external power supply, the indicator light 23 lights up, so as to facilitate personnel to judge the power status of the equipment.

[0038] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A glue injection device, comprising a mounting housing (1), characterized in that: The device includes an injection tube (2), one end of which is provided with an auxiliary cylinder (3), and one end of the auxiliary cylinder (3) is provided with a needle (4). A mounting plate (5) is fixedly connected to the outer wall of one end of the injection tube (2). The mounting plate (5) is bolted to one end of the mounting shell (1). The mounting shell (1) has a through hole that mates with the injection tube (2). A servo motor (6) is mounted on the inner wall of the mounting shell (1) away from the injection tube (2). The output end of the servo motor (6) is provided with a threaded rod (7). A push threaded tube (8) is threadedly connected to the threaded rod (7). One end of the push threaded tube (8) is provided with a pusher piston (9) that mates with the injection tube (2). The pusher piston (9) is located outside the mounting shell (1). An auxiliary plate (10) is fixedly connected to the outer wall of the push threaded tube (8). The inner wall of the mounting shell (1) Two limiting rods (11) are fixedly connected to the upper part and slidably connected to the auxiliary plate (10). A controller (12) electrically connected to the servo motor (6) is installed on the outer wall of the mounting shell (1). The controller (12) is provided with a forward rotation button (13) and a reverse rotation button (14). A connecting wire (15) is provided on the outer wall of the mounting shell (1). The forward rotation button (13) and the reverse rotation button (14) are connected in parallel between the connecting wire (15) and the servo motor (6). Two connecting plates (16) are provided on the inner side wall of the mounting shell (1) respectively located on both sides of the auxiliary plate (10). A first control button (17) and a second control button (18) are respectively installed on the two connecting plates (16) at their respective ends that are close to each other. The first control button (17) and the second control button (18) are electrically connected to the forward rotation button (13) and the reverse rotation button (14) respectively.

2. The glue injection device according to claim 1, characterized in that: The outer wall of the injection tube (2) is threaded near the auxiliary cylinder (3), and an internal threaded ring (19) is fixedly connected to the auxiliary cylinder (3). The internal threaded ring (19) is threadedly connected to the injection tube (2).

3. The glue injection device according to claim 1, characterized in that: One end of the injection tube (2) is fixedly connected to a sealing gasket (20), and one end of the sealing gasket (20) is in close contact with the auxiliary cylinder (3).

4. The glue injection device according to claim 1, characterized in that: The bottom end of the mounting plate (5) is provided with a foolproof notch, and a foolproof plug (21) that matches the foolproof notch is fixedly connected to the outer wall of the mounting shell (1).

5. The glue injection device according to claim 1, characterized in that: The injection tube (2) is provided with a transparent observation window (22).

6. The glue injection device according to claim 1, characterized in that: An indicator light (23) is installed on the outer wall of the mounting housing (1), and the indicator light (23) is electrically connected to the connecting wire (15).

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