Numerical control precise gluing method for doors and windows

Abstract

The invention relates to a door and window numerical control precise gluing method which comprises a rotary base and a gluing machine head and comprises the following steps: S1, an adjusting sliding seat is slidably arranged at the lower end of the rotary base, the gluing machine head is arranged at the lower end of the adjusting sliding seat, an adjusting lead screw is rotatably arranged at the lower end of the rotary base, one end of the adjusting lead screw is connected with an adjusting motor, and an adjusting nut is arranged on the adjusting lead screw; an adjusting nut seat is arranged on the adjusting sliding seat, the adjusting nut is connected with the adjusting nut seat through a pre-tightening spring, and the adjusting nut and the adjusting nut seat are arranged in a relative sliding mode through a plurality of guide rods; s2, according to the specifications of doors and windows, the inclination angle of a gluing nozzle is adjusted; s3, the position of the gluing nozzle is adjusted according to the inclination angle of the gluing nozzle, so that the front end of the gluing nozzle is vertically aligned with the rotating center line; s4, the optimal gluing ending distance is obtained; and S5, the doors and windows are glued, and gluing ending is conducted by adopting the optimal gluing ending distance. Gluing protrusions are reduced fundamentally, gluing is attractive, and quality is stable and reliable.

Description

Technical fields:

[0001] This invention relates to the field of door and window sealant application technology, specifically to a CNC precision sealant application method for doors and windows. Background technology:

[0002] Traditionally, door and window sealant application typically involves finishing the sealant application at the edges, meaning both the start and end points of the application are at the edges. Existing CNC sealant application machines inevitably leave significant sealant protrusions (overlapping areas) at the finish points, severely impacting the aesthetics of the doors and windows. To address this issue, our company previously improved the sealant application machine head to implement a corner-finishing sealant application method (Authorization Announcement No.: CN116550569B). This method places the sealant protrusions at the relatively concealed corners of the doors and windows, significantly improving their appearance.

[0003] While the aforementioned methods for finishing the corners of doors and windows with sealant improve their aesthetics to some extent, raised areas still exist, failing to fundamentally solve the problem. For example... Figure 19 As shown, the existing glue applicator head is slidably mounted on a rotating base via a dovetail guide rail, and a spring connects the glue applicator head to the rotating base. During glue application, the glue nozzle abuts against the door / window frame, causing the glue applicator head to retract a small distance (i.e., the glue application pre-tightening distance, which is pre-designed by the control system of the CNC glue applicator). An elastic pre-tightening force is applied through the spring. The spring has two main functions: first, it ensures that the glue nozzle remains in contact with the door / window frame during glue application, especially when applying glue to corners, thus ensuring continuous and uniform glue application and improving glue application quality; second, it assists in completing the glue application process. When the glue applicator head is about to reach the glue application start position (glue application end distance), in addition to continuing to move forward, the glue applicator head will gradually move away from the door / window frame. At this time, the glue nozzle can still apply glue to the door / window frame due to the elastic pre-tightening distance. Ideally, the glue nozzle should reach the glue application start position just as it is about to leave the door / window frame, thus completing the glue application while greatly reducing the occurrence of glue protrusions.

[0004] As is well known, all operating settings of the glue applicator head are designed based on the rotation center line of the rotating base. Therefore, the initial state requires the glue applicator nozzle to be vertically aligned with the rotation center line of the rotating base. However, in practice, it is necessary to process doors and windows of different specifications. To meet the processing requirements of different doors and windows, the tilt angle of the glue applicator nozzle needs to be adjusted in a timely manner. Once the tilt angle of the glue applicator nozzle changes, the tip of the nozzle is no longer vertically aligned with the rotation center line (e.g., ...). Figure 19As shown in the diagram, when applying sealant, problems arise such as excessive elastic preload (i.e., the nozzle exceeds the rotation center line) or insufficient elastic preload (i.e., the nozzle does not reach the rotation center line). Excessive elastic preload will cause the sealant protrusion length to increase at the end, further aggravating the problem. Insufficient elastic preload will shorten the sealant protrusion, but it will affect the sealant application quality, especially when rotating to apply sealant to the corners of doors and windows, easily causing uneven application or even intermittent application, seriously affecting the sealant application quality. In addition, changes in the tilt angle of the sealant nozzle on the existing sealant applicator head will also lead to differences in elastic preload, which will also affect the sealant application quality.

[0005] To avoid glue application quality issues, existing technologies typically design a larger elastic preload distance. The advantage of this design is that even if the nozzle tilt angle changes, insufficient elastic preload distance is generally not a problem. However, this design further accentuates glue protrusions, severely impacting aesthetics. Therefore, it is necessary to optimize existing glue application structures and methods to reduce glue protrusions and improve both application quality and aesthetics while meeting diverse glue application needs.

[0006] It should be noted that the above content falls within the inventor's technical knowledge and does not necessarily constitute prior art. Summary of the Invention:

[0007] The purpose of this invention is to solve the problems existing in the prior art and provide a CNC precision sealant application method for doors and windows. This method overturns the current practice of passively responding to changes in the nozzle tilt angle of the sealant applicator, sacrificing aesthetics to ensure sealant quality. Instead, it actively and precisely adjusts the nozzle's position to align vertically with the rotation center line, enabling controllable sealant pre-tightening distance and force. This reduces sealant protrusions at the source, resulting in stable and reliable sealant quality and significantly improving the sealant application quality and aesthetics of doors and windows.

[0008] The present invention achieves the above objectives by adopting the following technical solutions:

[0009] A CNC precision glue application method for doors and windows, comprising a rotating base and a glue application head, wherein the upper end of the rotating base is provided with a drive shaft, and includes the following steps:

[0010] S1. An adjusting slide is slidably provided at the lower end of the rotating base. A glue applicator head is provided at the lower end of the adjusting slide. An adjusting screw is rotatably provided at the lower end of the rotating base. One end of the adjusting screw is connected to an adjusting motor. An adjusting nut is provided on the adjusting screw. An adjusting nut seat is provided on the adjusting slide. The adjusting nut is connected to the adjusting nut seat through a pre-tightening spring. The adjusting nut is slidably arranged relative to the adjusting nut seat through multiple guide rods.

[0011] S2. Adjust the tilt angle of the glue nozzle by adjusting the angle adjustment motor on the glue applicator head according to the specifications of the doors and windows;

[0012] S3. Adjust the position of the dispensing nozzle by adjusting the motor according to the tilt angle of the dispensing nozzle, so that the front end of the dispensing nozzle is vertically aligned with the rotation center line of the rotating base.

[0013] S4. Since steps S1-S3 ensured that the initial position of the dispensing nozzle remained consistent, once the dispensing pre-tightening distance was set, the dispensing pre-tightening distance would remain consistent in subsequent use. With the dispensing pre-tightening distance unchanged, the dispensing pre-tightening force would also remain consistent when the pre-tightening spring was selected. With the dispensing pre-tightening distance remaining consistent, the optimal dispensing finishing distance was obtained to reduce the generation of dispensing protrusions.

[0014] S5. Move the glue applicator head to the door or window to apply glue, and finish applying glue using the optimal finishing distance.

[0015] In step S1, two adjusting guide rails are spaced apart along the width direction at the lower end of the rotating base. The adjusting guide rails are arranged along the length direction of the rotating base. Adjusting sliders are provided on the adjusting guide rails, and adjusting slide blocks are provided on the adjusting sliders. The two ends of the adjusting screw are rotatably mounted on the rotating base through bearing seats. The adjusting motor is connected to the adjusting screw through a coupling. The adjusting motor is mounted on the end of the rotating base through a motor mount.

[0016] One end of the guide rod is fixedly mounted on the adjusting nut via a threaded connection, and the other end is slidably mounted on the guide hole of the adjusting nut seat.

[0017] The guide hole is provided with a guide sleeve or a linear bearing, and the guide rod is mounted on the guide sleeve or the linear bearing.

[0018] A preload spring A is connected at the center between the adjusting nut and the adjusting nut seat;

[0019] Alternatively, a preload spring B may be provided at the position of the guide rod between the adjusting nut and the adjusting nut seat.

[0020] The preload spring A is provided with spring seats A at both ends, and the spring seats A are installed on the adjusting nut or adjusting nut seat through threaded connection A;

[0021] Alternatively, the adjusting nut may have a hollow tube, the adjusting nut seat may have a mounting hole, the mounting hole may have a threaded hole A, the threaded hole A may have a hollow screw A, the hollow tube may pass through the hollow screw A, a spring retaining ring A may be slidably provided on the hollow tube between the adjusting nut and the adjusting nut seat, a limiting retaining ring A may be fixedly provided on the outer wall of the hollow tube located outside the adjusting nut seat, the preload spring A may be sleeved on the hollow tube, and one end of the preload spring A may be mounted on the adjusting nut through the spring seat A, and the other end may act on the spring retaining ring A.

[0022] The preload spring B is sleeved on the guide rod, and spring seats B are respectively provided at both ends of the preload spring B. The spring seats B are installed on the adjusting nut or adjusting nut seat through threaded connection B.

[0023] Alternatively, a spring retainer B is slidably provided on the guide rod between the adjusting screw nut and the adjusting screw nut seat, a threaded hole B is provided on the guide hole, a hollow screw B is provided on the threaded hole B, the guide rod passes through the hollow screw B, and a limiting retainer B is fixedly provided on the guide rod located outside the adjusting screw nut seat, one end of the preload spring B is installed on the adjusting screw nut through the spring seat B, and the other end acts on the spring retainer B.

[0024] In step S2, the adjustment reference point is taken when the dispensing nozzle is in a horizontal position. Then, the adjustment motor drives the adjustment screw to rotate, the adjustment screw rotation drives the adjustment screw nut to move linearly, and the adjustment screw nut drives the adjustment screw nut seat and the dispensing head to move linearly through the pre-tightening spring so that the front end of the dispensing nozzle is vertically aligned with the rotation center line. Then, subsequent adjustments are made based on this reference.

[0025] In step S3, assuming the distance from the tip of the nozzle to the center line of the nozzle's rotation is L, and the tilt angle of the nozzle is θ, then the distance that needs to be adjusted is S.

[0026] S = LL × cos(θ)

[0027] When the nozzle is tilted at an angle of θ, the front end of the nozzle can be vertically aligned with the rotation center line by adjusting the motor to drive the nozzle to move S towards the rotation center line.

[0028] In step S4, the method for obtaining the optimal finishing distance for glue application is as follows:

[0029] According to the glue application finishing distance H set by the CNC glue applicator system 设 Apply sealant to the doors and windows, then measure the length L of the sealant protrusion. 凸 Multiple tests and measurements can be conducted to determine the optimal glue application finishing distance H. 佳 for:

[0030]

[0031] 0<ΔH≤1mm

[0032] In the formula, n is the number of trials; ΔH is the compensation amount.

[0033] In step S5, the glue applicator head is either an edge-finishing glue applicator head or a corner-finishing glue applicator head. When the glue applicator head is an edge-finishing glue applicator head, the edge-finishing glue applicator method is used to apply glue to the doors and windows. When the glue applicator head is a corner-finishing glue applicator head, either the edge-finishing glue applicator method or the corner-finishing glue applicator method can be used to apply glue to the doors and windows. When using the edge-finishing glue applicator, the optimal glue applicator finishing distance is a straight line distance. When using the corner-finishing glue applicator, the optimal glue applicator finishing distance can be converted into arc length or arc degree.

[0034] The present invention, employing the above-described structure, can bring the following beneficial effects:

[0035] By using the rotation center line of the rotating base as a reference, regardless of the tilt angle of the caulking nozzle, the position of the caulking nozzle can be actively and precisely adjusted by adjusting the motor to align its front end vertically with the rotation center line. This design ensures the consistency of the caulking pre-tightening distance and the caulking pre-tightening force, which in turn helps to design the optimal caulking finishing distance. Therefore, when applying caulking to different door and window profiles, not only can good caulking quality be obtained, but caulking protrusions are also significantly reduced and controlled, significantly improving the aesthetics of door and window caulking. Attached image description:

[0036] Figure 1 This is a schematic diagram of the CNC precision glue application method for doors and windows according to the present invention;

[0037] Figure 2 This is a schematic diagram of the glue applicator head mounting structure in Embodiment 1 of the present invention;

[0038] Figure 3 This is an internal schematic diagram of the glue applicator head mounting structure in Embodiment 1 of the present invention;

[0039] Figure 4 for Figure 3 Enlarged view of part X in the image;

[0040] Figure 5 This is a side view of the adjusting nut of Embodiment 1 of the present invention;

[0041] Figure 6 This is a schematic diagram of the guide rod installation structure in Embodiment 1 of the present invention;

[0042] Figure 7 This is a schematic diagram of the installation structure of the preload spring B in Embodiment 2 of the present invention;

[0043] Figure 8 This is a side view of the adjusting nut structure in Embodiment 2 of the present invention;

[0044] Figure 9 This is a schematic diagram of the installation structure of the guide rod in Embodiment 2 of the present invention;

[0045] Figure 10 This is a schematic diagram of the installation structure of the preload spring A in Embodiment 3 of the present invention;

[0046] Figure 11 This is a schematic diagram of another installation structure for the preload spring B in Embodiment 4 of the present invention;

[0047] Figure 12 This is a schematic diagram of the fit between the hollow screw B and the guide rod in Embodiment 4 of the present invention;

[0048] Figure 13 This is a schematic diagram of the installation structure of the corner finishing glue applicator head of the present invention;

[0049] Figure 14 This is a schematic diagram of the installation structure of the edge finishing glue applicator head of the present invention;

[0050] Figure 15 This is a structural diagram showing the position of the dispensing nozzle relative to the rotation center line of the present invention;

[0051] Figure 16 This is a schematic diagram of the finishing process of applying sealant to doors and windows according to the present invention;

[0052] Figure 17 This is a schematic diagram of the optimal glue application finishing distance of the present invention;

[0053] Figure 18 This is a schematic diagram of the adhesive application finishing distance of the present invention;

[0054] Figure 19 This is a schematic diagram of the installation structure of an existing glue applicator head;

[0055] In the diagram, 1. Rotating base; 2. Glue applicator head; 201. Angle adjustment motor; 202. Glue applicator nozzle; 203. Steering detection mechanism A; 204. Steering detection mechanism B; 3. Drive shaft; 4. Adjusting slide; 5. Adjusting lead screw; 6. Adjusting motor; 7. Adjusting nut; 8. Adjusting nut seat; 9. Preload spring; 10. Guide rod; 11. Rotation center line; 12. Adjusting guide rail; 13. Adjusting slider; 14. Bearing with seat; 15. Coupling; 16. Motor base; 17. Threaded connection; 18. Guide hole; 19. Guide sleeve or linear bearing; 20. Preload spring A; 21. Preload spring B; 22. Spring seat A; 23. Screw. 24. Hollow tube, 25. Mounting hole, 26. Threaded hole A, 27. Hollow screw A, 28. Spring retaining ring A, 29. Limiting retaining ring A, 30. Spring seat B, 31. Threaded connection B, 32. Spring retaining ring B, 33. Threaded hole B, 34. Hollow screw B, 35. Limiting retaining ring B, 36. Center line of caulking nozzle rotation, 37. Door and window, 38. Caulking protrusion, 39. Caulking pre-tightening distance, 40. Caulking finishing distance, 41. Optimal caulking finishing distance, 42. Caulking finishing trajectory, 43. Edge finishing caulking head, 44. Corner finishing caulking head, 45. Dovetail groove guide rail, 46. Spring, 47. Sealant. Detailed implementation method:

[0056] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0057] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0058] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0059] Furthermore, the terms “upper end”, “lower end”, “A”, “B”, etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the location of the indicated technical feature.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "provided with," "set up," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] Example 1

[0062] like Figure 1-6 As shown, the CNC precision glue application method for doors and windows includes a rotating base 1 and a glue application head 2. The rotating base 1 has a drive shaft 3 at its upper end. The rotating base 1, glue application head 2, and drive shaft 3 are essential components of a CNC glue application machine. Currently, the glue application heads 2 available on the market mainly include edge finishing glue application heads 43 and corner finishing glue application heads 44 (technology previously disclosed by our company). Both edge finishing glue application heads 43 and corner finishing glue application heads 44 include at least one glue application nozzle 202 (some designs have one nozzle 202, while others have multiple nozzles 202; for example, the common design has four nozzles 202). Figure 13 , 14 The glue applicator head 202 is adjustable in tilt angle. Each glue applicator head 2 is equipped with a steering detection mechanism. The corner finishing glue applicator head 44 uses steering detection mechanism A203, while the edge finishing glue applicator head 43 uses steering detection mechanism B204. The main difference between steering detection mechanism A203 and steering detection mechanism B204 is that steering detection mechanism A203 can actively lift the probe to achieve corner finishing glue application. The process includes the following steps:

[0063] S1. An adjusting slide block 4 is slidably provided at the lower end of the rotating base 1. A glue applicator head 2 is provided at the lower end of the adjusting slide block 4. An adjusting screw 5 is rotatably provided at the lower end of the rotating base 1. One end of the adjusting screw 5 is connected to an adjusting motor 6. An adjusting nut 7 is provided on the adjusting screw 5. An adjusting nut seat 8 is provided on the adjusting slide block 4. The adjusting nut 7 is connected to the adjusting nut seat 8 through a preload spring 9. The adjusting nut 7 is slidably arranged relative to the adjusting nut seat 8 through multiple guide rods 10. An angle adjusting motor 201 for adjusting the tilt angle of the glue applicator nozzle 202 is provided on the glue applicator head 2. The adjusting motor 6, adjusting lead screw 5, adjusting lead screw 7, and adjusting lead screw seat 8 achieve linear motion. However, the installation method of adjusting lead screw 7 and adjusting lead screw seat 8 differs from existing technologies. Existing technologies generally directly fasten adjusting lead screw 7 and adjusting lead screw seat 8 with screws. In contrast, the adjusting lead screw 7 and adjusting lead screw seat 8 in this application are connected by a sliding connection and a pre-tensioning spring 9. This connection structure not only achieves linear motion (capable of precisely adjusting the position of the dispensing nozzle 202) but also meets the pre-tensioning requirements for dispensing, providing a foundation for subsequent precision dispensing. This includes the following steps:

[0064] S2. According to the specifications of the door and window 37, the tilt angle of the glue applicator 202 is adjusted by the angle adjustment motor 201. Selecting a better matching tilt angle of the glue applicator 202 according to the specifications of the door and window 37 is an existing technology and is already widely used. Existing glue applicator heads 2 are equipped with angle adjustment motors 201 to adjust the tilt angle of the glue applicator 202. In practical applications, the following can be used: take the glue applicator 202 in a horizontal position as the adjustment reference point, and then drive the adjustment screw 5 to rotate by the adjustment motor 6. The rotation of the adjustment screw 5 drives the adjustment nut 7 to move linearly. The adjustment nut 7 drives the adjustment nut seat 8 and the glue applicator head 2 to move linearly through the pre-tightening spring 9 so that the front end of the glue applicator 202 is vertically aligned with the rotation center line 11. Then, subsequent adjustments are made based on this reference.

[0065] S3. Based on the tilt angle of the glue applicator 202, adjust the position of the glue applicator 202 by adjusting the motor 6, so that the front end of the glue applicator 202 is vertically aligned with the rotation center line 10 of the rotating base 1; for example... Figure 15 As shown, the specific adjustment process is as follows:

[0066] Assuming the distance from the tip of nozzle 202 to its rotation center line 36 is L, and the tilt angle of nozzle 202 is θ, then the distance to be adjusted is S.

[0067] S = LL × cos(θ)

[0068] When the tilt angle of the glue applicator 202 is θ, the front end of the glue applicator 202 can be vertically aligned with the rotation center line 11 by adjusting the motor 6 to drive the glue applicator 202 to move a distance S towards the rotation center line 11.

[0069] S4. Since steps S1-S3 ensured that the initial position of the glue nozzle 202 remained consistent, once the glue pre-tightening distance 39 was set, it would remain consistent throughout subsequent use. This glue pre-tightening distance 39 is initially set by the existing CNC glue dispensing machine system. With the glue pre-tightening distance 39 unchanged, the glue pre-tightening force also remains consistent once the pre-tightening spring 9 is selected. Before glue dispensing, the pre-tightening spring 9 maintains its natural length. During glue dispensing, due to the glue pre-tightening distance 39 set by the system, the doors and windows force the pre-tightening spring 9 to be subjected to axial pressure, reducing its length to less than its original length, and the shortened distance equal to the glue pre-tightening distance 39. While maintaining a consistent pre-tightening distance 39, the optimal finishing distance 41 for applying sealant is obtained, reducing the generation of sealant protrusions 38 (i.e., the overlapping portion of sealant 47). Using this method, regardless of the type of door or window being sealed, as long as the CNC sealant applicator system does not change the initially set pre-tightening distance, the pre-tightening distance 39 will remain unchanged. With the pre-tightening distance 39 unchanged, the finishing trajectory 42 is also fixed (as initially designed by the system). Therefore, by changing the starting point of the finishing process (i.e., the finishing distance 40), the length of the sealant protrusion can be altered, thereby obtaining the optimal finishing distance 41 and significantly reducing the generation of sealant protrusions 38. Because the tilt angle of the caulking nozzle 202 has changed in the existing technology, the actual caulking pre-tightening distance is not equal to the caulking pre-tightening distance set by the original system. This makes it impossible to determine the actual caulking pre-tightening distance, which in turn makes it impossible to optimize the caulking finishing distance 40. Therefore, only a relatively conservative caulking finishing distance 40 can be designed to ensure that the caulking can be closed. However, this will cause the caulking protrusion 38 to be more prominent, which seriously affects the aesthetics of the caulking on the doors and windows 37.

[0070] The method to obtain the optimal finishing distance of 41mm for glue application is as follows:

[0071] like Figure 17 As shown, the glue application finishing distance of 40H is set according to the CNC glue applicator. 设 Apply sealant to the door and window 37, then measure the length L of the sealant protrusion 38. 凸 Multiple tests and measurements can be conducted to determine the optimal glue application finishing distance: 41H. 佳 for:

[0072]

[0073] 0<ΔH≤1mm

[0074] In the formula, n represents the number of trials; ΔH represents the compensation amount. The main reason for designing the compensation amount here is that CNC glue applicators also have operational errors during operation. The smaller the operational error of the CNC glue applicator, the smaller the corresponding compensation amount can be designed. This ensures glue application closure and greatly reduces the generation of glue protrusions 38. The length of glue protrusions 38 can be controlled within tens of micrometers or even a few micrometers, which is difficult to detect with the naked eye, thus significantly improving the aesthetics of doors and windows. Moreover, with the glue application pre-tightening distance 39 determined, the glue application pre-tightening force can also be determined after the pre-tightening spring is determined, thus ensuring that the overall glue application quality is relatively stable and accurate, significantly improving the glue application quality.

[0075] S5. Move the glue applicator head 2 to the door / window 37 to apply glue, and finish the glue application using the optimal finishing distance 41. The glue applicator head 2 includes an edge finishing glue applicator head 43 (existing technology; for details, please refer to [reference needed]). Figure 14 (as shown in serial number 43) or corner finishing glue applicator head 44 (existing technology, a previously disclosed patent technology of our company, the structure of which can be referred to) Figure 13 (as shown in serial number 44); when the glue applicator head 2 is an edge-finishing glue applicator head 43, the edge-finishing glue applicator method is adopted (the existing commonly used glue applicator method, that is, the glue applicator start and end points are located at the edge of the door and window, such as...). Figure 16 As shown, sealant is applied to the door and window 37; when the sealant applicator 2 is a corner finishing sealant applicator 44, it can apply sealant to the door and window 37 using either the edge finishing sealant method or the corner finishing sealant method (existing technology; the sealant method previously disclosed by our company can be referred to our patent: Door and Window Corner Finishing Sealant Method, Authorization Announcement No.: CN116550569B). When using the edge finishing sealant method, the optimal finishing distance 41 is a straight line distance; when using the corner finishing sealant method, the optimal finishing distance 41 can be converted into arc length or arc. For the sealant application at the corner of the door and window, a rotary sealant application method is used (i.e., the drive shaft 3 drives the rotating base 1 and the sealant applicator 2 on it to rotate and change direction while applying sealant to the corner of the door and window), so the conversion can be performed. Figure 18 Figure (a) shows the nozzle just coming into contact with the door / window, and Figure (b) shows the pre-tightening distance 39. Compared with the existing nozzles that use dovetail guide rails 45 and springs 46 to connect to the rotating base 1, this application uses the rotation center line 11 of the rotating base 1 as a reference. Regardless of the tilt angle of the nozzle 202, the position of the nozzle 202 can be actively and precisely adjusted by adjusting the motor 6 to align its front end vertically with the rotation center line 11. This design ensures the consistency of the pre-tightening distance 39 and the pre-tightening force, which helps to design the optimal finishing distance 41. Therefore, when applying sealant to different doors and windows, not only can good sealant quality be obtained, but the sealant protrusion 38 is also significantly reduced and controlled, significantly improving the aesthetics of the sealant application.

[0076] In step S1, two adjusting guide rails 12 are spaced apart along the width direction at the lower end of the rotating base 1. The adjusting guide rails 12 are arranged along the length direction of the rotating base 1. Adjusting sliders 13 are provided on the adjusting guide rails 12, and adjusting slide blocks 4 are provided on the adjusting sliders 13. The two ends of the adjusting screw 5 are rotatably mounted on the rotating base 1 through bearings 14. The adjusting motor 6 is connected to the adjusting screw 5 through a coupling 15, and the adjusting motor 6 is mounted on the end of the rotating base 1 through a motor mount 16. The specific sliding structure of the adjusting slide block 4 is given.

[0077] One end of the guide rod 10 is fixedly mounted on the adjusting nut 7 via a threaded connection 17, and the other end is slidably mounted on the guide hole 18 of the adjusting nut seat 8. The specific installation structure of the guide rod 10 is given, which enables linear motion.

[0078] A guide sleeve or linear bearing 19 is provided on the guide hole 18, and the guide rod 10 is slidably mounted on the guide sleeve or linear bearing 19. This further improves the guiding accuracy of the guide rod 10 and achieves low-friction sliding.

[0079] A preload spring A20 is connected at the center between the adjusting nut 7 and the adjusting nut seat 8.

[0080] The preload spring A20 has spring seats A22 at both ends, and the spring seats A22 are installed on the adjusting nut 7 or the adjusting nut seat 8 via threaded connection A23. Using a larger preload spring A20 to connect the adjusting nut 7 and the adjusting nut seat 8 can meet the requirement of the glue application preload distance 39 and provide a stable and reliable glue application preload force.

[0081] Example 2

[0082] The difference between this embodiment and Embodiment 1 is that:

[0083] like Figure 7-9 As shown, a preload spring B21 is provided at the position of the guide rod 10 between the adjusting screw nut 7 and the adjusting screw nut seat 8.

[0084] The preload spring B21 is sleeved on the guide rod 10, and each end of the preload spring B21 is provided with a spring seat B30. The spring seat B30 is installed on the adjusting nut 7 or adjusting nut seat 8 via a threaded connection B31. Alternatively, the preload spring can be installed at the position of the guide rod 10.

[0085] Example 3

[0086] The difference between this embodiment and the above embodiments is that:

[0087] like Figure 10As shown, the adjusting nut 7 is provided with a hollow tube 24, the adjusting nut seat 8 is provided with a mounting hole 25, the mounting hole 25 is provided with a threaded hole A26, the threaded hole A26 is provided with a hollow screw A27, the hollow tube 24 passes through the hollow screw A27, a spring retaining ring A28 is slidably provided on the hollow tube 24 between the adjusting nut 7 and the adjusting nut seat 8, a limiting retaining ring A29 is fixedly provided on the outer wall of the hollow tube 24 located outside the adjusting nut seat 8, the preload spring A20 is sleeved on the hollow tube 24, and one end of the preload spring A20 is installed on the adjusting nut 7 through the spring seat A22, and the other end acts on the spring retaining ring A28. This structural design is a further optimization based on Example 1. This structural design can change the initial state of the preload spring A20 by adjusting the hollow screw A27. The initial state can be either the natural length or the compressed state. Therefore, it can achieve the adjustment of the glue application preload without replacing the preload spring A20, which should be more flexible and convenient in practice.

[0088] Example 4

[0089] The difference between this embodiment and the above embodiments is that:

[0090] like Figure 11-12 As shown, a spring retainer B32 is slidably mounted on the guide rod 10 between the adjusting nut 7 and the adjusting nut seat 8. A threaded hole B33 is provided on the guide hole 18, and a hollow screw B34 is mounted on the threaded hole B33. The guide rod 10 passes through the hollow screw B34, and a limiting retainer B35 is fixedly mounted on the guide rod 10 located outside the adjusting nut seat 8. One end of the preload spring B21 is mounted on the adjusting nut 7 via a spring seat B30, and the other end acts on the spring retainer B32. This solution is a further optimization and improvement of Embodiment 2. This structural design allows the initial state of the preload spring B21 to be changed by adjusting the hollow screw B34. The initial state can be either the natural length or a compressed state. Therefore, the preload force of the adhesive application can be adjusted without replacing the preload spring B21, making it more flexible and convenient in practical applications and more practical.

[0091] The above specific embodiments should not be construed as limiting the scope of protection of the present invention. For those skilled in the art, any alternative improvements or modifications made to the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0092] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A CNC precision glue application method for doors and windows, comprising a rotating base and a glue application head, wherein a drive shaft is provided at the upper end of the rotating base, characterized in that, Includes the following steps: S1. An adjusting slide is slidably provided at the lower end of the rotating base. A glue applicator head is provided at the lower end of the adjusting slide. An adjusting screw is rotatably provided at the lower end of the rotating base. One end of the adjusting screw is connected to an adjusting motor. An adjusting nut is provided on the adjusting screw. An adjusting nut seat is provided on the adjusting slide. The adjusting nut is connected to the adjusting nut seat through a pre-tightening spring. The adjusting nut is slidably arranged relative to the adjusting nut seat through multiple guide rods. S2. Adjust the tilt angle of the glue nozzle by adjusting the angle adjustment motor on the glue applicator head according to the specifications of the doors and windows; S3. Adjust the position of the dispensing nozzle by adjusting the motor according to the tilt angle of the dispensing nozzle, so that the front end of the dispensing nozzle is vertically aligned with the rotation center line of the rotating base. S4. Since steps S1-S3 ensured that the initial position of the dispensing nozzle remained consistent, once the dispensing pre-tightening distance was set, the dispensing pre-tightening distance would remain consistent in subsequent use. With the dispensing pre-tightening distance unchanged, the dispensing pre-tightening force would also remain consistent when the pre-tightening spring was selected. With the dispensing pre-tightening distance remaining consistent, the optimal dispensing finishing distance was obtained to reduce the generation of dispensing protrusions. S5. Move the glue applicator head to the door or window to apply glue, and finish applying glue using the optimal finishing distance.

2. The CNC precision glue application method for doors and windows according to claim 1, characterized in that, In step S1, two adjusting guide rails are spaced apart along the width direction at the lower end of the rotating base. The adjusting guide rails are arranged along the length direction of the rotating base. Adjusting sliders are provided on the adjusting guide rails, and adjusting slide blocks are provided on the adjusting sliders. The two ends of the adjusting screw are rotatably mounted on the rotating base through bearing seats. The adjusting motor is connected to the adjusting screw through a coupling. The adjusting motor is mounted on the end of the rotating base through a motor seat. One end of the guide rod is fixedly mounted on the adjusting nut through a threaded connection, and the other end is slidably mounted on the guide hole of the adjusting nut seat.

3. The CNC precision glue application method for doors and windows according to claim 2, characterized in that, The guide hole is provided with a guide sleeve or a linear bearing, and the guide rod is mounted on the guide sleeve or the linear bearing.

4. The CNC precision glue application method for doors and windows according to claim 1 or 3, characterized in that, A preload spring A is connected at the center between the adjusting nut and the adjusting nut seat; Alternatively, a preload spring B may be provided at the position of the guide rod between the adjusting nut and the adjusting nut seat.

5. The CNC precision glue application method for doors and windows according to claim 4, characterized in that, The preload spring A is provided with spring seats A at both ends, and the spring seats A are installed on the adjusting nut or adjusting nut seat through threaded connection A; Alternatively, the adjusting nut may have a hollow tube, the adjusting nut seat may have a mounting hole, the mounting hole may have a threaded hole A, the threaded hole A may have a hollow screw A, the hollow tube may pass through the hollow screw A, a spring retaining ring A may be slidably provided on the hollow tube between the adjusting nut and the adjusting nut seat, a limiting retaining ring A may be fixedly provided on the outer wall of the hollow tube located outside the adjusting nut seat, the preload spring A may be sleeved on the hollow tube, and one end of the preload spring A may be mounted on the adjusting nut through the spring seat A, and the other end may act on the spring retaining ring A.

6. The CNC precision glue application method for doors and windows according to claim 4, characterized in that, The preload spring B is sleeved on the guide rod, and spring seats B are respectively provided at both ends of the preload spring B. The spring seats B are installed on the adjusting nut or adjusting nut seat through threaded connection B. Alternatively, a spring retainer B is slidably provided on the guide rod between the adjusting screw nut and the adjusting screw nut seat, a threaded hole B is provided on the guide hole, a hollow screw B is provided on the threaded hole B, the guide rod passes through the hollow screw B, and a limiting retainer B is fixedly provided on the guide rod located outside the adjusting screw nut seat, one end of the preload spring B is installed on the adjusting screw nut through the spring seat B, and the other end acts on the spring retainer B.

7. The CNC precision glue application method for doors and windows according to claim 1 or 6, characterized in that, In step S2, the adjustment reference point is taken when the dispensing nozzle is in a horizontal position. Then, the adjustment motor drives the adjustment screw to rotate, the adjustment screw rotation drives the adjustment screw nut to move linearly, and the adjustment screw nut drives the adjustment screw nut seat and the dispensing head to move linearly through the pre-tightening spring so that the front end of the dispensing nozzle is vertically aligned with the rotation center line. Then, subsequent adjustments are made based on this reference.

8. The CNC precision glue application method for doors and windows according to claim 7, characterized in that, In step S3, assuming the distance from the tip of the nozzle to the center line of the nozzle's rotation is L, and the tilt angle of the nozzle is θ, then the distance that needs to be adjusted is S. S = LL × cos(θ) When the nozzle is tilted at an angle of θ, the front end of the nozzle can be vertically aligned with the rotation center line by adjusting the motor to drive the nozzle to move S towards the rotation center line.

9. The CNC precision glue application method for doors and windows according to claim 8, characterized in that, In step S4, the method for obtaining the optimal finishing distance for glue application is as follows: According to the glue application finishing distance H set by the CNC glue applicator system 设 Apply sealant to the doors and windows, then measure the length L of the sealant protrusion. 凸 Multiple tests and measurements can be conducted to determine the optimal glue application finishing distance H. 佳 for: 0<ΔH≤1mm In the formula, n is the number of trials; ΔH is the compensation amount.

10. The CNC precision glue application method for doors and windows according to claim 9, characterized in that, In step S4 and step S5, the glue applicator head is either an edge finishing glue applicator head or a corner finishing glue applicator head. When the glue applicator head is an edge finishing glue applicator head, the edge finishing glue applicator method is used to apply glue to the doors and windows. When the glue applicator head is a corner finishing glue applicator head, it can be used to apply glue to doors and windows using either the edge finishing glue applicator method or the corner finishing glue applicator method. When using the edge finishing glue applicator method, the optimal finishing glue distance is a straight line distance. When using the corner finishing glue applicator method, the optimal finishing glue distance can be converted into arc length or arc degree.

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