Multi-component adhesive spraying system and method

Abstract

The present invention relates to a multi-component adhesive spraying system and method. The system includes multiple adhesive spraying hoses, each for spraying a single component. The multiple adhesive spraying hoses are staggered so that the components sprayed from the multiple adhesive spraying hoses are pre-mixed spatially before being deposited on the adherend. The multiple adhesive spraying hoses are controlled to spray the corresponding components onto the adherend simultaneously, and the content ratio of each component sprayed onto the adherend satisfies a pre-set mixing ratio. By separating the multiple components and spraying them simultaneously onto the adherend during adhesive spraying, the present invention eliminates the need for pre-mixing and preparation processes and eliminates the need to clean the individual adhesive spraying hoses, thereby greatly improving efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of glue spraying, and in particular to a glue spraying system and method for multi-component glue. Background Art

[0002] Multi-component glue refers to a glue that hardens by mixing two components, such as AB glue. One liquid is the glue and the other is the hardener. The two liquids need to be mixed to harden. It does not need to rely on temperature to harden, so it is a type of room temperature hardening glue, generally used in industry. The current AB glue spraying process is to manually mix component A and component B according to the proportion, and then use a spray hose to spray the mixed AB glue on the workpiece to be adhered. This method has some defects. For example, it requires manual mixing and liquid preparation, which reduces work efficiency. For example, component A and component B are easy to solidify after mixing. Therefore, the AB glue mixed and prepared at one time must be sprayed completely before stopping the work. Moreover, before using the spray hose next time (or after the spraying is completed), the spray hose needs to be cleaned with a cleaning fluid to prevent the AB glue from solidifying and affecting the reuse of the spray hose, resulting in low efficiency. In addition, chemical reactions may occur after the two components AB are mixed in advance, affecting the adhesive effect. Summary of the Invention

[0003] The purpose of the present invention is to improve the deficiencies in the prior art and to provide a multi-component glue spraying system and method.

[0004] In order to achieve the above-mentioned object of the invention, the embodiment of the present invention provides the following technical solutions:

[0005] A multi-component glue spraying system, wherein the multi-component glue is composed of multiple components. The multi-component glue spraying system includes multiple glue spraying hoses, each glue spraying hose is used to spray one of the multiple components, and the multiple glue spraying hoses are staggered so that the components sprayed out by the multiple glue spraying hoses are pre-mixed in space and then fall on the adherend. The multiple glue spraying hoses are controlled to spray the corresponding components onto the adherend at the same time, and the content ratio of each component sprayed on the adherend meets the preset mixing ratio.

[0006] The aforementioned glue spraying system eliminates the need for pre-mixing and preparation by loading each component separately into separate glue spray hoses. Prior to spraying, the components are separated, and then simultaneously sprayed to mix the components, ultimately bonding the components. This eliminates the need for pre-mixing and preparation, thereby improving efficiency. Furthermore, since the components are separate before spraying, they will not solidify within their respective glue spray hoses, eliminating the need for hose cleaning and further improving efficiency. Compared to conventional static glue spraying methods, the dynamic glue spraying method of the present invention significantly improves efficiency and avoids potential chemical reactions between the components that could affect the bonding effect.

[0007] In a further optimized solution, the ratio of the nozzle diameters of the multiple glue spraying hoses is determined by the mixing ratio of the multiple components. There are various ways to ensure that the content ratio of the components sprayed onto the adherend meets a predetermined mixing ratio. For example, the spray power or time of each glue spraying hose can be controlled to control the proportion of the components sprayed simultaneously. Controlling the spray volume of each glue spraying hose by adjusting the nozzle diameter is simple and reliable.

[0008] In a further optimized solution, the aforementioned glue spraying system further includes a first guide rail, a conveyor belt, a proximity switch, and a control device. The workpiece is placed on the conveyor belt and moves with it. The multiple glue spraying hoses are staggered on the first guide rail and can all move along the first guide rail. The conveyor belt and the first guide rail are arranged at a certain angle so that the glue spraying direction is perpendicular to the movement direction of the workpiece. The proximity switch is used to detect whether the workpiece has moved into place. Upon receiving the signal from the proximity switch, the control device controls the multiple glue spraying hoses to simultaneously spray the corresponding components toward the workpiece. This arrangement can more effectively achieve uniform mixing of the first component and the second component on the workpiece.

[0009] In a further optimized solution, the above-mentioned glue spraying system further includes an air jet tube and a second guide rail. The air jet tube is mounted on and can run along the second guide rail, and the second guide rail is arranged parallel to the first guide rail. The air jet tube is used to spray a high-pressure airflow toward the adherend after the components are sprayed. The air jet tubes may be multiple and arranged in parallel, or the air jet tube may be equipped with multiple nozzles arranged in parallel. The air jet tube arrangement allows the high-pressure airflow to form an air comb, combing the multiple components sprayed on the adherend, thereby improving the uniformity of the mixing of the multiple components and ensuring a stronger bond.

[0010] In a further optimized solution, the multi-component adhesive in the aforementioned glue spraying system is separately placed in a constant temperature device. This is done to ensure the viscosity coefficient of each adhesive component. In practice, each adhesive component can be placed in the constant temperature device before being loaded into the corresponding glue spray hose, or multiple glue spray hoses, each containing a different adhesive component, can be placed in the constant temperature device.

[0011] On the other hand, an embodiment of the present invention also provides a method for spraying a multi-component glue, wherein the multi-component glue is composed of multiple components. The method is to use multiple glue spray tubes to hold the multiple components, and each glue spray tube is used to spray one of the multiple components; when spraying, the multiple glue spray tubes simultaneously spray the corresponding components onto the adherend, and the components sprayed out by the multiple glue spray tubes are pre-mixed in space and then fall on the adherend, and the content ratio of each component sprayed on the adherend meets the pre-set mixing ratio.

[0012] Furthermore, a proximity switch is used to detect in real time whether the adherend has moved into position. After the adherend has moved into position, the multiple glue spraying hoses simultaneously spray corresponding components onto the adherend. During the spraying process, the multiple glue spraying hoses synchronously move along the first guide rail, the adherend moves with the conveyor belt, and the glue spraying direction is controlled to be perpendicular to the movement direction of the adherend.

[0013] Furthermore, after the plurality of glue spraying hoses simultaneously spray corresponding components onto the adherend, N parallel high-pressure air flows are sprayed toward the adherend through the air jet pipes, where N is an integer greater than or equal to 1.

[0014] Compared with the prior art, the present invention separates multiple components before spraying and sprays them onto the adherends simultaneously during the glue spraying process, eliminating the need for pre-mixing and preparation processes and the need to clean each glue spraying hose, thereby greatly improving efficiency.

[0015] The present invention achieves mixing of multi-component adhesives by adopting a high-pressure air combing method, thereby avoiding the disadvantages of low efficiency of mechanical mixing or manual mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic structural diagram of a glue spraying system provided in an embodiment of the present invention.

[0018] Marking in the figure

[0019] Adhesive 10; conveyor belt 20; proximity switch 30; first guide rail 40; second guide rail 50; first glue spraying hose 60; second glue spraying hose 70; and air injection hose 80. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0021] Figure 1 The structure of the multi-component glue spraying system provided in this embodiment is shown. Of course, Figure 1 It is just a schematic diagram of the composition structure. The specific structure of each component in the actual implementation is not as shown. Figure 1 As shown. And Figure 1 In the examples shown, only two-component glue is used as an example.

[0022] See also Figure 1 The multi-component adhesive spraying system provided in this embodiment includes a first glue spraying hose 60 and a second glue spraying hose 70. The first glue spraying hose 60 is used to spray the first component, and the second glue spraying hose 70 is used to spray the second component. The first glue spraying hose 60 and the second glue spraying hose 70 are staggered so that the first component and the second component sprayed from the first glue spraying hose 60 and the second glue spraying hose 70 are pre-mixed in space before falling on the adherend 10. The first glue spraying hose 60 and the second glue spraying hose 70 are controlled to spray the first component and the second component onto the adherend 10 simultaneously, and the content ratio of the first component and the second component sprayed onto the adherend 10 satisfies a predetermined mixing ratio. There are many ways to control the content ratio of the first component and the second component sprayed onto the adherend 10 to meet the predetermined mixing ratio. In this embodiment, this is achieved by setting the ratio of the nozzle diameters of the first glue spraying hose 60 and the second glue spraying hose 70 to the mixing ratio of the first component and the second component. For example, if the mixing ratio of the first component to the second component is 1.2:1, then the ratio of the nozzle diameters of the first spray hose 60 and the second spray hose 70 is also 1.2:1. This ensures that the first spray hose 60 and the second spray hose 70 spray at the same time and at the same time and the content of each component meets the mixing ratio requirement.

[0023] like Figure 1As shown, in order to make the first component and the second component mix more evenly after being sprayed onto the adherend 10, as a preferred embodiment, the above-mentioned glue spraying system also includes a first guide rail 40, a second guide rail 50 and a conveyor belt, and the first glue spraying hose 60 and the second glue spraying hose 70 are both arranged on the first guide rail 40, and both can run along the first guide rail 40 under the drive of the motor system (or the first glue spraying hose 60 and the second glue spraying hose 70 run with the operation of the first guide rail). The adherend 10 is placed on the conveyor belt 20 and moves with the conveyor belt 20. The conveyor belt 20 is arranged at a certain angle to the first guide rail 40 so that the glue spraying direction (glue sprayed on the adherend) can be perpendicular to the running direction of the adherend to avoid spraying the first component and the second component outside the adherend 10 and causing waste. A proximity switch 30 is provided on one side of the conveyor belt 20 for detecting whether the adherend 10 has moved into position. When the adherend 10 has moved into position, the proximity switch 30 sends a signal to a control device (such as a general computer or industrial computer), which then activates the first and second glue spray hoses 60 and 70 to simultaneously spray the first and second components. The first and second components are pre-mixed in space before falling onto the adherend 10.

[0024] To further ensure a more uniform mixing of the first and second components after being sprayed onto the adherend 10, the adhesive spraying system is preferably provided with an air jet 80 for ejecting a high-pressure airflow toward the adherend 10 after the first and second components have been sprayed. Preferably, multiple air jets 80 are arranged in parallel, or the air jet 80 has multiple nozzles arranged in parallel. This allows the ejected high-pressure airflow to form an air comb, combing the first and second components sprayed onto the adherend 10, thereby improving the uniformity of the mixing and ensuring a stronger bond.

[0025] When the above system is used for glue spraying, the operation process and principle are as follows:

[0026] Load the first component into the first glue spraying hose 60 and the second component into the second glue spraying hose 70, then install the first glue spraying hose 60 and the second glue spraying hose 70 on the first guide rail 40, and install the spraying hose 80 on the second guide rail 50;

[0027] The adhered parts 10 are placed on the conveyor belt 20 at intervals, and a proximity switch 30 is set at a certain position on one side of the conveyor belt 20 (not in contact), and the proximity switch 30 is connected to the control device signal;

[0028] The conveyor belt 20 is activated. When the adherend 10 reaches its designated position (within the sensing range of the proximity switch 30), the proximity switch 30 senses the adherend 10 and sends a signal to the control device. Upon receiving the signal from the proximity switch 30, the control device activates the first and second adhesive spray hoses 60 and 70 to simultaneously spray the first and second components onto the adherend 10. The first and second components are pre-mixed spatially before being deposited onto the adherend. After spraying for a set length, the first and second adhesive spray hoses 60 and 70 quickly return to their original positions, ready for the next adhesive spraying. This occurs until the proximity switch 30 no longer detects the adherend 10. While the first and second adhesive spray hoses 60 and 70 are operating, the control device simultaneously activates the air jet 80 to spray air onto the adherend 10. During this spraying process, the air jet 80 moves back and forth in a fixed direction at high speed, creating an air comb on the adherend 10, ensuring a more even mixing of the first and second components. This completes the adhesive spraying process for one adherend 10.

[0029] The operating speed of the first and second glue spray hoses 60 and 70 (more precisely, the speed component of the first and second glue spray hoses 60 and 70 in the direction perpendicular to the conveyor belt) is related to the amount of glue sprayed. The slower the operating speed, the greater the amount of glue sprayed. Different adhesive quantities may require different amounts for different adherends. Therefore, the amount of glue sprayed to the adherend can be flexibly adjusted by adjusting the operating speed of the first and second glue spray hoses 60 and 70 to accommodate different adherends. When adjusting the operating speed of the first and second glue spray hoses 60 and 70, the operating speed of the conveyor belt should also be adjusted to ensure that the conveyor belt speed and the speed component of the first and second glue spray hoses 60 and 70 in the direction of the conveyor belt are consistent.

[0030] It should be noted that, in this embodiment, only multi-component glue is used as an example to illustrate the glue spraying system and method of the present invention. Obviously, the system and method of the present invention are not only applicable to multi-component glue, but also to glue with more than two components.

[0031] To ensure that the viscosity coefficient of each component adhesive is not affected by temperature changes, in a preferred embodiment, the multi-component adhesive is placed in a constant temperature device (not shown). As an embodiment, each component adhesive can be placed in the constant temperature device before being loaded into the corresponding adhesive spray hose. As another embodiment, multiple adhesive spray hoses containing each component adhesive can also be placed in the constant temperature device.

[0032] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A method for spraying a multi-component adhesive, wherein the multi-component adhesive is composed of multiple components, characterized in that: The multiple components are contained in multiple glue spraying tubes, and each glue spraying tube is used to spray one of the multiple components. When spraying glue, the multiple glue spraying tubes spray the corresponding components to the adherend at the same time, and the components sprayed from the multiple glue spraying tubes are pre-mixed in space before falling on the adherend, and the content ratio of each component sprayed on the adherend meets the pre-set mixing ratio. After the multiple spray hoses simultaneously spray the corresponding components onto the adherend, the air jet pipe is used to spray a high-pressure airflow onto the adherend after spraying the components. The air jet pipes are multiple and arranged in parallel, or the air jet pipes are equipped with multiple nozzles and the multiple nozzles are arranged in parallel, so that the ejected high-pressure airflow forms an air comb. During the spraying process, the air jet pipe moves back and forth at a high speed in a fixed direction so that the airflow sprayed on the adherend forms an air comb, making the mixing more uniform. The machine also includes a conveyor belt, a first guide rail, and a second guide rail. The adhesive workpiece is arranged on the conveyor belt and moves with the conveyor belt. The plurality of glue spraying pipes are staggered on the first guide rail and can run along the first guide rail. The conveyor belt and the first guide rail are arranged at a certain angle so that the glue spraying direction is perpendicular to the running direction of the adhesive workpiece. The jet nozzle is arranged on the second guide rail and can run along the second guide rail. The second guide rail is arranged parallel to the first guide rail. The multi-component adhesives are respectively arranged in constant temperature devices.

2. The method for spraying multi-component glue according to claim 1, characterized in that: The ratio of the nozzle diameters of the plurality of glue spraying hoses is the mixing ratio of the plurality of components.

3. The method for spraying multi-component glue according to claim 1, characterized in that: It also includes a proximity switch and a control device. The proximity switch is used to detect whether the adhesive is in place. After receiving the signal from the proximity switch, the control device controls the multiple glue spraying hoses to spray corresponding components to the adhesive at the same time.

4. The method for spraying multi-component glue according to claim 1, characterized in that: The running speeds of the first guide rail and the conveyor belt are adjusted according to the change of the glue spraying amount.

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