Numerical control sash glue injection system and method

Abstract

The application provides a numerical control window sash glue injection system and method, and belongs to the technical field of automatic processing and manufacturing of building doors and windows. The system comprises a rack, two cross beams are slidably connected to the rack along an X axis, and the two cross beams can move towards each other. A positioning assembly comprises four workbenches, the four workbenches can be enclosed to form a glue injection space, and are used for placing and clamping the window sash. Two sets of clamping and overturning machine heads can clamp the two sides of the window sash and place the window sash on the positioning assembly after overturning. Two sets of glue injection machine heads can move above the glue injection space, and can inject glue into the window sash in the glue injection space. The application is suitable for mixed-line production of window sashes of multiple specifications, has high glue injection precision and product quality, can improve production efficiency, and can reduce the product failure rate.

Description

Technical Field

[0001] This invention belongs to the field of automated processing and manufacturing technology of building doors and windows, specifically relating to a CNC window sash glue injection system and method. Background Technology

[0002] In the manufacturing process of modern building doors and windows, to ensure excellent waterproof, soundproof, airtight, and thermal insulation performance, it is essential to seal the gaps between the glass and the window frame, or between the window sash and the profile. Currently, a large portion of the window sash sealing process still relies on manual hand-held caulking guns. This is not only labor-intensive and inefficient, but the thickness and uniformity of the sealant application also depend entirely on the worker's skill level, resulting in extremely poor product quality consistency. Furthermore, when double-sided sealing of the window sash is required, manually flipping the heavy sash is time-consuming and laborious, and it is extremely easy to damage and contaminate the sealant already applied but not yet fully cured on the front side, leading to a persistently high rate of defective products.

[0003] Currently, a large portion of window sash adhesive application still relies on manual hand-held glue guns or semi-automatic machines that can only operate on one side. When double-sided adhesive application is required on both sides of the window sash, it often necessitates manually moving the heavy sash out, flipping it over, and then putting it back into the machine. This is not only labor-intensive and severely disrupts the continuity of the automated production line, but also makes it extremely easy to touch and contaminate the already applied but not fully cured adhesive during manual flipping, resulting in a high product defect rate. The industry lacks an automated system that can highly integrate "positioning, front-side adhesive application, automatic flipping, and back-side adhesive application" into one system.

[0004] Secondly, existing glue-applying equipment mostly uses fixed backing plates or mechanical limit posts for window sash positioning, which can only adapt to a single or a few fixed-size window sashes. Faced with the modern demands for customized, multi-specification, and multi-variety door and window production, workers need to frequently and time-consumingly stop the machine to manually adjust the mechanical limiters. The lack of a flexible two-dimensional (X-axis / Y-axis) linkage adaptive adjustment mechanism results in low equipment flexibility, severely restricting production efficiency. Summary of the Invention

[0005] To address the problems existing in the prior art, a CNC window sash glue injection system and method are proposed.

[0006] The technical solution to the technical problem solved by this invention is as follows: On one hand, a CNC window sash glue injection system is proposed, characterized in that it includes: The frame has two crossbeams slidably connected along the X-axis, and the two crossbeams can move in opposite directions. The positioning assembly includes four sets of worktables, with two worktables on each crossbeam, and the two worktables can slide in opposite directions along the Y-axis. The four sets of worktables can enclose and form an adhesive injection space for placing and securing the window sash. Two sets of clamping and flipping heads are set on each crossbeam and move along the Y-axis on the crossbeam. The two sets of clamping and flipping heads can clamp the two sides of the window sash and flip it to place it on the positioning assembly. Two sets of adhesive injection heads are set behind the positioning assembly and move along the Y-axis on the crossbeam. The adhesive injection head of the adhesive injection head can move above the adhesive injection space to inject adhesive into the window sash within the adhesive injection space.

[0007] Preferably, the workbench includes a movable plate slidably connected to a crossbeam; a first bracket is connected to the movable plate, the top of the first bracket forms a platform, and two limiting rods are vertically connected to the platform, with the corner of the window sash held between the two limiting rods; it also includes a pressing structure, which includes a rodless cylinder, vertically connected to one side of the first bracket, a connecting plate connected to the movable end of the rodless cylinder, a pressing shaft rotatably connected to the connecting plate, the top end of the pressing shaft passing through the platform and connected to the pressing plate; a swing arm is connected to the middle of the pressing shaft, the end of the swing arm is connected to the telescopic end of the first cylinder, and the first cylinder is fixed to the connecting plate; the telescopic extension of the first cylinder can drive the swing arm to swing, thereby rotating the pressing plate above the window sash placed on the platform.

[0008] Preferably, the bottom of the movable plate is connected to a set of drive gears and at least one set of guide gears, and a first rack that meshes with the drive gears and guide gears is connected to the corresponding crossbeam. The first rack is arranged along the Y-axis direction. The drive gears are driven to rotate by a first motor fixed on the movable plate, thereby driving the movable plate to move along the Y-axis direction.

[0009] Preferably, the clamping and tilting head includes a slide block that can move along the Y-axis on a crossbeam; a second bracket that can move along the X-axis is connected to the slide block; a lifting plate is vertically slidably connected to the second bracket; a central shaft is rotatably connected to the lifting plate; a tilting beam is rotatably connected to the central shaft; a clamping assembly is connected to the tilting beam; a driven gear is sleeved on the central shaft; the driven gear is connected to the back of the tilting beam; rotation of the driven gear can drive the tilting beam to rotate; a driving gear that meshes axially with the driven gear is rotatably connected to the lifting plate; the driving gear is driven to rotate by a third motor fixed to the lifting plate.

[0010] Preferably, the clamping assembly includes two clamping seats slidably disposed on the flip beam. The bottom of the clamping seats protrudes outward to form a positioning plate. The top of the clamping seats is connected to a second cylinder. The telescopic end of the second cylinder is connected to a pressure block. The pressure block can move toward the positioning plate to clamp the window sash. Two threaded rods are transversely connected inside the flip beam. One end of the two threaded rods is connected to a driven bevel gear, and the corresponding end of the central shaft is connected to a driving bevel gear. The central shaft is driven to rotate by a fourth motor fixed on the lifting plate, thereby causing the clamping seats to move in opposite directions.

[0011] Preferably, the dispensing head includes a carrier plate with an arc-shaped track connected to it. Guide grooves are provided on both the inner and outer sides of the arc-shaped track. At least one set of rollers is rolled in each guide groove. The rollers are connected to the glue seat and can drive the glue seat to move along the arc-shaped track. A dispensing head is rotatably connected to the glue seat. A rotating shaft is connected to the bottom of the dispensing head. The rotating shaft extends downward through the glue seat and connects to a swing arm. The dispensing head also includes a calibration cylinder hinged to the glue seat. The telescopic end of the calibration cylinder is connected to a fisheye bearing, which is connected to the other end of the swing arm. The dispensing head also includes an arc-shaped rack fixed to the outer side of the arc-shaped track. A fifth motor is also connected to the glue seat. The output end of the fifth motor is driven by a displacement gear, which meshes with the arc-shaped rack.

[0012] Preferably, the tail of the carrier plate is also connected to a calibration component. The calibration component includes a fourth bracket, on which a swing cylinder is connected. The swing end of the swing cylinder is connected to a sensor seat, and an edge position sensor is connected to the sensor seat. The edge position sensor can determine the dispensing position of the dispensing head and drive the dispensing head to swing through the calibration cylinder to calibrate its position.

[0013] Preferably, it also includes a feeding assembly fixed to the inside of the crossbeam; the feeding assembly includes several third supports, the third supports together support the belt plate, the two ends of the belt plate are connected to driven pulleys, and the two driven pulleys are connected by a conveyor belt; a sixth motor is fixed to the side of the belt plate, the sixth motor drives and connects to the driving pulley, the driving pulley is rotatably connected to the bottom of the belt plate, the conveyor belt passes around the driving pulley and follows the driving pulley to rotate; the conveyor belts on the two crossbeams together convey the window sash into the CNC window sash glue injection system.

[0014] Preferably, at least two guide rails are connected to both sides of the frame along the X-axis, and guide blocks are connected to the bottom of the corresponding crossbeams. The crossbeams slide along the guide rails through the guide blocks. Two sets of lead screws are also connected to the inside of the frame. The two lead screws are independently driven to rotate by two second motors fixed on the frame. The lead screws are threaded with lead screw nuts. The lead screw nut of one lead screw is connected to the crossbeam, and the lead screw nut of the other lead screw is connected to the other crossbeam, so as to realize the independent control of the movement of the two crossbeams.

[0015] On the other hand, a glue injection method using the aforementioned CNC window sash glue injection system is proposed, comprising the following steps: Step 1: Material feeding and conveying; Place the window sash to be glued on the feeding assembly and convey the window sash along the Y-axis to the central processing area of ​​the system; Step 2, Clamping and Initial Positioning: Control the two sets of clamping and tilting heads to move into position along the Y-axis of the crossbeam. Then, drive the threaded rod inside the tilting beam to rotate via the fourth motor, causing the clamping seats of the two sets of clamping components to move towards each other. Drive the pressure block to cooperate with the positioning plate via the second cylinder to clamp the left and right edges of the window sash. Move the second bracket along the X-axis and slide the lifting plate along the vertical direction to lift the window sash to the set height and move it above the positioning components. Step 3: Corner clamping and vertical pressing; Two second motors drive two sets of lead screws to rotate, causing the two crossbeams to move in opposite directions along the X-axis of the frame. At the same time, the first motors of the four worktables drive the drive gears to roll on the first rack, causing the moving plates to slide in opposite directions along the Y-axis, thereby reducing the glue injection space formed by the four sets of worktables until the four corners of the window sash are precisely clamped between the two limit rods on the four sets of worktables; then, the first cylinder of the pressing structure extends and retracts, causing the swing arm to swing, so that the pressing shaft and pressing plate rotate to above the corners of the window sash. Then, the rodless cylinder moves down vertically, causing the connecting plate and pressing plate to move downward, pressing the window sash firmly onto the worktable; then, the clamping assembly releases the window sash and returns to its original position. Step 4: Frontal Glue Injection; Two sets of glue injection heads move along the Y-axis of the crossbeam above the glue injection space; The swing cylinder at the tail of the carrier plate drives the sensor seat to extend, and the edge position sensor accurately determines the edge line of the window sash and the position of the glue injection head; The calibration cylinder, based on the data fed back by the sensor, pulls the swing arm through the fisheye bearing, driving the rotating shaft and the glue injection head to rotate to calibrate the glue injection angle; The glue injection head is started to inject glue, and at the same time, the fifth motor drives the displacement gear to roll on the arc rack, driving the glue seat and the glue injection head to move along the arc track to complete the glue injection around the front of the window sash; After the glue injection is completed, the glue injection head retracts to its original position; Step 5: Flipping and Reverse Glue Injection; The reverse action of the holding structure causes the pressure plate to lift and rotate back to its original position, while the crossbeam and worktable slightly separate to loosen the window sash; The two sets of clamping and flipping heads reposition to clamp both sides of the window sash, the lifting plate rises to lift the window sash off the table, the third motor drives the drive gear to rotate, and through the driven gear drives the flipping beam and the clamped window sash to rotate 180° around the central axis to achieve flipping; Subsequently, the clamping and flipping heads place the flipped window sash back onto the table, repeating the four-corner clamping and vertical pressing action of Step 3, and then the glue injection head advances again, repeating the action of Step 4 to complete the glue injection on the reverse side of the window sash; Step Six: Release and Unloading; After the reverse side is filled with glue, the glue injection head retracts, the holding structure and positioning components fully release the window sash, and the clamping and flipping head securely places the glued window sash back onto the conveyor belt of the feeding component, and the conveyor belt transports the finished window sash out of the system.

[0016] Compared with existing technologies, the above technical solution has the following advantages or beneficial effects: 1. This invention constructs a two-dimensional linkage architecture along the X / Y axis using two crossbeams moving along the X-axis on the frame, and positioning components, a clamping and flipping head, and an adhesive dispensing head moving along the Y-axis on the crossbeams. The system can continuously and automatically complete the entire process on a single production line, including adaptive enclosure of window sash dimensions, initial positioning with four corner clamping, front adhesive dispensing, automatic spatial flipping, and back adhesive dispensing. This system not only reduces manual labor intensity but also avoids contact and contamination of uncured adhesive during manual flipping, enabling flexible mixed-line production of window sashes of various specifications, improving production efficiency and finished product qualification rate.

[0017] 2. This invention uses a second motor to drive a lead screw to achieve independent counter-adjustment of the two crossbeams along the X-axis, and combines the first motor with a gear and rack mechanism to achieve independent adjustment of the four worktables along the Y-axis. The two-axis linkage can automatically form a matching glue-injection space based on the input window sash size; combined with the pressure-holding structure composed of a rodless cylinder and the first cylinder, the corners of the window sash can be pressed and fixed, eliminating the frequent and time-consuming manual mechanical limit adjustment process of traditional equipment.

[0018] 3. The clamping and flipping head of the present invention adopts a flipping structure of lifting plate combined with third motor and main and driven gears, and is equipped with clamping components with double threaded rods in opposite directions. It can safely clamp the edge of window sash and use the space to smoothly flip 180 degrees to replace manual flipping, ensuring efficient continuity of double-sided glue injection operation.

[0019] 4. The glue dispensing head of this invention adopts an arc-shaped track and a gear and rack displacement mechanism, enabling multi-angle glue dispensing at the window sash corners. Simultaneously, the system integrates an edge position sensor and a calibration cylinder at the tail, enabling real-time non-contact edge recognition and dynamically fine-tuning the swing angle of the glue dispensing head based on minute errors at window sash corners and seams. This solves the problems of glue overflow, insufficient glue, or uneven glue seams that are common with traditional fixed dispensing heads at corners. Attached Figure Description

[0020] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0021] Figure 1 This is a diagram of a CNC window sash glue injection system.

[0022] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0023] Figure 3 This is a schematic diagram of the workbench structure.

[0024] Figure 4This is a schematic diagram of the chassis structure consisting of the frame and crossbeams.

[0025] Figure 5 yes Figure 4 Enlarged view of section B in the middle.

[0026] Figure 6 This is a top-down view of the chassis structure.

[0027] Figure 7 This is a schematic diagram of the clamping and flipping head structure.

[0028] Figure 8 This is a schematic diagram of the connection between the drive gear and the driven gear of the clamping and tilting machine head.

[0029] Figure 9 This is a structural diagram of the clamping and tilting machine head after removing the tilting beam and lifting plate.

[0030] Figure 10 This is a schematic diagram of the glue dispensing head structure.

[0031] Figure 11 This is a top-down view of the glue dispensing head structure.

[0032] Figure 12 This is a schematic diagram of the calibration component's usage status.

[0033] Figure 13 This is a schematic diagram of the calibration component's storage structure.

[0034] Explanation of reference numerals in the attached figures: 1. Frame; 11. Guide rail; 12. Guide block; 13. Lead screw; 14. Second motor; 15. Lead screw nut; 2. Crossbeam; 3. Workbench; 31. Movable plate; 32. First support; 33. Platform; 34. Limit rod; 35. Rodless cylinder; 36. Connecting plate; 37. Pressing shaft; 38. Pressing plate; 39. Swing arm; 310. First cylinder; 311. Drive gear; 312. Guide gear; 313. First rack; 314. First motor; 4. Clamping and tilting head; 41. Slide; 42. Second bracket; 43. Lifting plate; 44. Central shaft; 45. Tilting beam; 46. Clamping assembly; 461. Clamping seat; 462. Positioning plate; 463. Second cylinder; 464. Pressure block; 47. Driven gear; 48. Driven gear; 49. Third motor; 410. Threaded rod; 411. Driven bevel gear; 412. Driven bevel gear; 413. Fourth motor; 5. Dispensing head; 51. Carrier plate; 52. Arc-shaped track; 53. Guide groove; 54. Roller; 55. Dispensing head; 56. Rotary shaft; 57. Calibration cylinder; 58. Arc-shaped rack; 59. Displacement gear; 510. Fisheye bearing; 511. Swing arm; 6. Calibration assembly; 61. Fourth bracket; 62. Swing cylinder; 63. Sensor mount; 64. Edge position sensor; 7. Feeding assembly; 71. Third support; 72. Belt plate; 73. Driven pulley; 74. Sixth motor; 75. Conveyor belt; 76. Drive pulley. Detailed Implementation

[0035] To clearly illustrate the technical features of this solution, the invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure of the invention, components and arrangements of specific examples are described below. Furthermore, reference numerals and / or letters may be repeated in different examples. This repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted to avoid unnecessarily limiting the invention. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Example 1: Please see Figures 1-13This embodiment discloses a CNC window sash glue injection system, the main carrier of which is a rigid frame 1. Two parallel guide rails 11 are horizontally fixed on both sides of the frame 1 along the X-axis. Guide blocks 12 are connected to the bottom of the two crossbeams 2, and the two crossbeams 2 slide across the base guide rails 11 through the guide blocks 12 to achieve opposite or opposite displacement. Two sets of inner and outer guide rails are arranged in parallel on each crossbeam 2. Two positioning components of the worktable 3 are slidably installed on the inner guide rail, so the whole system contains four sets of worktables 3 evenly distributed on the inner side of the two crossbeams 2; a clamping and flipping head 4 and a glue injection head 5 are respectively connected to the outer guide rail.

[0037] Each workbench 3 includes a movable plate 31. The bottom of the movable plate 31 is connected to a drive assembly that moves the workbench 3. The drive assembly includes a first motor 314, a drive gear 311, and a guide gear 312 connected to the movable plate 31. A first rack 313, meshing with the drive gear 311, is fixed on the crossbeam 2 along the Y-axis. When the first motor 314 operates, the drive gear 311 rolls on the first rack 313, causing the workbench 3 to slide along the Y-axis. Through the opposing movement of the two crossbeams 2 along the X-axis and the opposing sliding of the four workbench sets 3 along the Y-axis, the four workbench sets 3 can be enclosed to form a rectangular glue-injection space to clamp window sashes of different lengths and widths.

[0038] A horizontal platform 33 is connected above the movable plate 31 of the workbench 3 via a first bracket 32. Two limiting rods 34 are fixed vertically upward on the surface of the platform 33. When the four workbenches 3 converge towards the center, the four right-angled parts of the window sash will precisely slide between the two limiting rods 34. To prevent vertical displacement during processing, the workbench 3 is equipped with a pressing structure. The pressing structure includes a rodless cylinder 35 vertically fixed to the side of the first bracket 32. A connecting plate 36 is fixed to the vertical moving end of the rodless cylinder 35. A vertical pressing shaft 37 is rotatably connected to the connecting plate 36 via a bearing. The top end of the pressing shaft 37 passes through the platform 33 and is fixedly connected to a horizontal pressing plate 38. A first cylinder 310 is hinged to the connecting plate 36. The telescopic end of the first cylinder 310 is hinged to the end of the swing arm 39 sleeved in the middle of the pressing shaft 37. The first cylinder 310 actuates to rotate the clamping plate 38 to directly above the corner of the window sash that is locked on the table 33. Then the rodless cylinder 35 moves down to firmly press the window sash onto the table 33.

[0039] To replace manual turning, a clamping and turning head 4 is slidably mounted on the outer guide rail 11 of the crossbeam 2. The slide 41 of the clamping and turning head 4 can be displaced along the Y-axis. Its driving movement is the same as that of the drive assembly of the worktable 3; a second bracket 42 that can move along the X-axis is connected to the slide 41, and a lifting plate 43 is slidably connected to the second bracket 42 via a vertical guide rail 11. A central shaft 44 is rotatably connected to the lifting plate 43, and a turning beam 45 is fixedly connected to the end of the central shaft 44. A driven gear 47 is fixed to the back of the turning beam 45, and a driving gear 48 that meshes with the driven gear 47 is rotatably connected to the lifting plate 43. The driving gear 48 is driven by a third motor 49, thereby causing the turning beam 45 to rotate 180 degrees.

[0040] The flip beam 45 is equipped with a clamping assembly 46, including two slidably disposed clamping seats 461. The bottom of the clamping seats 461 protrudes outward to form a positioning plate 462. A second cylinder 463 is fixed to the top of the clamping seats 461. The second cylinder 463 drives the pressure block 464 to move towards the positioning plate 462 at the bottom to clamp the edge of the window sash. Two threaded rods 410 are arranged laterally symmetrically inside the flip beam 45. Driven bevel gears 411 are fixedly connected to their inner ends. A driving bevel gear 412 is fixedly connected to the end of the central shaft 44 and meshes with the two driven bevel gears 411. A fourth motor 413 drives the central shaft 44 to rotate, and through the bevel gear pair transmission, the two threaded rods 410 rotate in opposite directions at the same time, causing the clamping seats 461 to move towards each other or separate synchronously.

[0041] Example 2: Please see Figures 10-13 Based on Example 1, this example further refines the design of the dispensing head 5, enabling it to have dynamic trajectory compensation and multi-channel dispensing capability.

[0042] The dispensing head 5 is also slidably mounted on the outer guide rail 11 of the crossbeam 2. It includes a carrier plate 51, with an arc-shaped track 52 fixed to its upper surface. Guide grooves 53 are machined on both the inner and outer sides of the arc-shaped track 52. The glue holder supporting the dispensing head 55 is slidably connected to the arc-shaped track 52 via multiple sets of rollers 54. An arc-shaped rack 58 is fixed to the outer side of the arc-shaped track 52, and is positioned within the guide groove 53. A fifth motor is mounted on the glue holder, and its output is connected to a displacement gear 59 that meshes with the arc-shaped rack 58. When the fifth motor operates, it drives the glue holder to slide smoothly along the arc-shaped track 52, causing the dispensing head 55 on the glue holder to transition from horizontal to vertical dispensing. A rotating shaft 56 passing through the glue holder is connected to the bottom of the dispensing head 55, and a rocker arm 511 is fixedly connected to the bottom of the rotating shaft 56. A calibration cylinder 57 is hinged to the glue holder. The piston rod end of the calibration cylinder 57 is hinged to the end of the rocker arm 511 via a fisheye bearing 510. The slight extension and retraction of the calibration cylinder 57 can drive the dispensing head 55 to deflect slightly to correct the tilt angle.

[0043] The tail of the carrier plate 51 integrates a calibration component 6. A swing cylinder 62 is mounted on the fourth bracket 61, and its output end is connected to a sensor base 63. An edge position sensor 64 is fixed on the sensor base 63. During operation, the edge position sensor 64 performs a non-contact scan of the window sash edge. The control system calculates the deviation and instructs the calibration cylinder 57 to work, which pulls the swing rod 511 through the fisheye bearing 510 to achieve angle deflection compensation.

[0044] The glue supply assembly includes at least one set of high-pressure glue cylinders fixed on the carrier plate 51, with a pre-drilled port at the bottom connected to the glue dispensing head 55 via a delivery pipe. Different glue cylinders can hold glues of different properties. Inside each glue cylinder is a push plate unit, including a push plate, a vertical push rod, and a push-pull cylinder fixed on the carrier plate 51. The push-pull cylinder drives a transmission shaft to rotate a pulley mechanism, which in turn drives a push block and push rod to push the push plate downwards, generating high pressure to force the glue into the delivery pipe.

[0045] Example 3: Please see Figures 1-6 To achieve truly unmanned assembly line operation, this embodiment has specifically designed the independent control logic for the frame 1 and the crossbeam 2, as well as the automatic feeding channel.

[0046] Two sets of parallel lead screws 13 are horizontally mounted inside the frame 1, each driven by a separate second motor 14. Lead screws 13 are connected to lead screw nuts 15 with reverse threads. One lead screw nut 15 is connected to the left crossbeam 2, and the other lead screw nut 15 is connected to the right crossbeam 2. By controlling the two second motors 14, the two crossbeams 2 can be moved independently along the X-axis. Combined with the independent guide rails 11, this ensures that the dispensing and flipping of the machine heads do not interfere with each other.

[0047] An automatic feeding assembly 7 is fixed to the feeding end of the crossbeam 2. The feeding assembly 7 includes several third supports 71, which together support the belt plate 72. Driven pulleys 73 are installed at both ends of the belt plate 72, and a conveyor belt 75 is tensioned in the middle. The output shaft of the sixth motor 74 is driven by a drive pulley 76. When the sixth motors 74 on the two crossbeams 2 start synchronously, the drive pulley 76 drives the conveyor belt 75 to rotate, supporting the left and right bottom edges of the window sash to achieve automatic feeding and discharging.

[0048] Example 4: This embodiment provides a fully automated double-sided glue application method using the above-mentioned CNC window sash glue application system. The specific steps are as follows: Step 1: Feeding and conveying; Place the window sash to be glued on the feeding assembly 7 and convey the window sash along the Y-axis to the central processing area of ​​the system; Step 2, Clamping and Initial Positioning: Control the two sets of clamping and flipping heads 4 to move into position along the Y-axis of the crossbeam 2. Then, drive the threaded rod 410 inside the flipping beam 45 to rotate via the fourth motor 413, causing the clamping seats 461 of the two sets of clamping components 46 to move in opposite directions. Drive the pressure block 464 to cooperate with the positioning plate 462 via the second cylinder 463 to clamp the left and right edges of the window sash. Move the second bracket 42 along the X-axis and slide the lifting plate 43 in the vertical direction to lift the window sash to the set height and move it above the positioning components. Step 3: Corner clamping and vertical pressing; Two second motors 14 drive two sets of lead screws 13 to rotate, causing the two crossbeams 2 to move in opposite directions along the X-axis of the frame 1. At the same time, the first motors 314 of the four worktables 3 drive the drive gears 311 to roll on the first rack 313, causing the moving plates 31 to slide in opposite directions along the Y-axis, thereby reducing the glue injection space formed by the four sets of worktables 3 until the four corners of the window sash are precisely clamped between the two limiting rods 34 on the four sets of table plates 33. Then, the first cylinder 310 of the pressing structure extends and retracts, causing the swing arm 39 to swing, so that the pressing shaft 37 and the pressing plate 38 rotate to the top of the corners of the window sash. Then, the rodless cylinder 35 moves down in the vertical direction, causing the connecting plate 36 and the pressing plate 38 to move downward, pressing the window sash onto the table plate 33. Then, the clamping assembly 46 releases the window sash and returns to its original position. Step 4: Frontal Glue Injection; Two sets of glue injection heads 5 move along the Y-axis of the crossbeam 2 above the glue injection space; The swing cylinder 62 at the tail of the carrier plate 51 drives the sensor seat 63 to extend, and the edge position sensor 64 accurately determines the edge line of the window sash and the position of the glue injection head 55; According to the data fed back by the sensor, the calibration cylinder 57 pulls the swing rod 511 through the fisheye bearing 510, which drives the rotating shaft 56 and the glue injection head 55 to rotate to calibrate the glue injection angle; The glue injection head 55 is started to inject glue, and at the same time, the fifth motor drives the displacement gear 59 to roll on the arc rack 58, which drives the glue seat and the glue injection head 55 to move along the arc track 52 to complete the glue injection around the front of the window sash; After the glue injection is completed, the glue injection head 5 retracts to its original position; Step 5: Flipping and Reverse Glue Injection; The reverse action of the holding structure causes the pressing plate 38 to lift and rotate back to its original position. At the same time, the crossbeam 2 and the worktable 3 slightly separate to loosen the window sash. The two sets of clamping and flipping heads 4 reposition to clamp the two sides of the window sash. The lifting plate 43 rises to lift the window sash off the table 33. The third motor 49 drives the drive gear 48 to rotate, which drives the flipping beam 45 and the clamped window sash to rotate 180° around the central axis 44 through the driven gear 47 to achieve flipping. Then, the clamping and flipping heads 4 place the flipped window sash back onto the table 33 and repeat the four-corner clamping and vertical pressing action of Step 3. Then, the glue injection head 5 advances again and repeats the action of Step 4 to complete the glue injection on the reverse side of the window sash. Step 6, Release and Unloading: After the reverse side is filled with glue, the glue injection head 5 retracts, the holding structure and positioning components are fully released to release the window sash, and the clamping and flipping head 4 securely places the glued window sash back onto the conveyor belt 75 of the feeding component 7. The conveyor belt 75 then transports the finished window sash out of the system.

[0049] Although the specific embodiments of the invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the invention. Based on the technical solutions of the invention, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the invention.

Claims

1. A CNC window sash glue injection system, characterized in that, include: The frame (1) has two crossbeams (2) slidably connected along the X-axis on the frame (1), and the two crossbeams (2) can move in opposite directions; The positioning component includes four sets of worktables (3), with two worktables (3) set on each crossbeam (2), and the two worktables (3) can slide in opposite directions along the Y-axis; the four sets of worktables (3) can enclose and form an injection space for placing and clamping the window sash. Two sets of clamping and flipping heads (4) are provided on each crossbeam (2) and move along the Y-axis on the crossbeam (2); the two sets of clamping and flipping heads (4) can clamp the two sides of the window sash and flip it to place it on the positioning component; Two sets of glue injection heads (5) are set behind the positioning component and move along the Y-axis on the crossbeam (2); the glue injection head (55) of the glue injection head (5) can move above the glue injection space to inject glue into the window sash in the glue injection space.

2. The CNC window sash glue injection system according to claim 1, characterized in that: The workbench (3) includes a movable plate (31), which is slidably connected to the crossbeam (2); a first bracket (32) is connected to the movable plate (31), and a table (33) is formed on the top of the first bracket (32). Two limiting rods (34) are vertically connected to the table (33), and the corner of the window sash is held between the two limiting rods (34). It also includes a pressing structure, which includes a rodless cylinder (35). The rodless cylinder (35) is vertically connected to one side of the first bracket (32). The moving end of the rodless cylinder (35) is connected to a connecting plate (36). A pressing shaft (37) is rotatably connected to the connecting plate (36). The top end of the pressing shaft (37) passes through the platform (33) and is connected to the pressing plate (38). The middle part of the pressing shaft (37) is connected to a swing arm (39). The end of the swing arm (39) is connected to the telescopic end of the first cylinder (310). The first cylinder (310) is fixed on the connecting plate (36). The telescopic movement of the first cylinder (310) can drive the swing arm (39) to swing, thereby rotating the pressing plate (38) above the window sash placed on the platform (33).

3. The CNC window sash glue injection system according to claim 2, characterized in that: The bottom of the movable plate (31) is connected to a set of drive gears (311) and at least one set of guide gears (312). A first rack (313) that meshes with the drive gears (311) and guide gears (312) is connected to the crossbeam (2). The first rack (313) is set along the Y-axis. The drive gears (311) are driven to rotate by a first motor (314) fixed on the movable plate (31), thereby driving the movable plate (31) to move along the Y-axis.

4. The CNC window sash glue injection system according to claim 1, characterized in that: The clamping and flipping head (4) includes a slide (41) which can move along the Y-axis on the crossbeam (2); a second bracket (42) that can move along the X-axis is connected to the slide (41); a lifting plate (43) is vertically slidably connected to the second bracket (42); a central shaft (44) is rotatably connected to the lifting plate (43); a flipping beam (45) is rotatably connected to the central shaft (44); a clamping assembly (46) is connected to the flipping beam (45); a driven gear (47) is sleeved on the central shaft (44); the driven gear (47) is connected to the back of the flipping beam (45); the rotation of the driven gear (47) can drive the flipping beam (45) to rotate; a driving gear (48) that meshes axially with the driven gear (47) is rotatably connected to the corresponding lifting plate (43); the driving gear (48) is driven to rotate by a third motor (49) fixed on the lifting plate (43).

5. The CNC window sash glue injection system according to claim 4, characterized in that: The clamping assembly (46) includes two clamping seats (461) slidably disposed on the flip beam (45). The bottom of the clamping seat (461) protrudes outward to form a positioning plate (462). The top of the clamping seat (461) is connected to a second cylinder (463). The telescopic end of the second cylinder (463) is connected to a pressure block (464). The pressure block (464) can move toward the positioning plate (462) to clamp the window sash. Two threaded rods (410) are connected laterally inside the flip beam (45), and the clamping seat (461) is threaded onto the threaded rods (410); a driven bevel gear (411) is connected to one end of each of the two threaded rods (410), and a driving bevel gear (412) is connected to the end of the corresponding central shaft (44). The central shaft (44) is driven to rotate by a fourth motor (413) fixed on the lifting plate (43), thereby driving the clamping seat (461) to move in opposite directions.

6. The CNC window sash glue injection system according to claim 1, characterized in that: The dispensing head (5) includes a carrier plate (51), on which an arc-shaped track (52) is connected. Guide grooves (53) are provided on both the inner and outer sides of the arc-shaped track (52). At least one set of rollers (54) are rolled in each guide groove (53). The rollers (54) are connected to the glue seat and can drive the glue seat to move along the arc-shaped track (52). A glue-filling head (55) is rotatably connected to the glue seat. A rotating shaft (56) is connected to the bottom of the glue-filling head (55). The rotating shaft (56) extends downward through the glue seat and connects to the swing rod (511). It also includes a calibration cylinder (57) hinged to the glue seat. A fish-eye bearing (510) is connected to the telescopic end of the calibration cylinder (57). The fish-eye bearing (510) is connected to the other end of the swing rod (511). It also includes an arc-shaped rack (58) fixed to the outside of the arc-shaped track (52); a fifth motor is also connected to the rubber base, and the output end of the fifth motor is connected to a displacement gear (59), which is adapted to mesh with the arc-shaped rack (58).

7. A CNC window sash glue injection system according to claim 6, characterized in that: The tail of the carrier plate (51) is also connected to a calibration component (6). The calibration component (6) includes a fourth bracket (61). A swing cylinder (62) is connected to the fourth bracket (61). The swing end of the swing cylinder (62) is connected to a sensor seat (63). An edge position sensor (64) is connected to the sensor seat (63). The edge position sensor (64) can determine the glue injection position of the glue injection head (55) and drive the glue injection head (55) to swing through the calibration cylinder (57) to calibrate its position.

8. The CNC window sash glue injection system according to claim 1, characterized in that: It also includes a feeding assembly (7) fixed inside the crossbeam (2); the feeding assembly (7) includes several third supports (71), the third supports (71) jointly support the belt plate (72), the two ends of the belt plate (72) are connected to driven pulleys (73), and the two driven pulleys (73) are connected by a conveyor belt (75); a sixth motor (74) is fixed on the side of the belt plate (72), the sixth motor (74) drives the drive pulley (76), the drive pulley (76) is rotatably connected to the bottom of the belt plate (72), and the conveyor belt (75) passes around the drive pulley (76) and follows the drive pulley (76) to rotate; the conveyor belts (75) on the two crossbeams (2) jointly convey the window sash into the CNC window sash glue injection system.

9. A CNC window sash glue injection system according to claim 1, characterized in that: At least two guide rails (11) are connected to both sides of the frame (1) along the X-axis direction, and guide blocks (12) are connected to the bottom of the corresponding crossbeam (2). The crossbeam (2) slides along the guide rails (11) through the guide blocks (12). Two sets of lead screws (13) are also connected to the inner side of the frame (1). The two lead screws (13) are driven to rotate independently by two second motors (14) fixed on the frame (1). The lead screws (13) are threadedly connected to the lead screw nut (15). The lead screw nut (15) of one lead screw (13) is connected to a crossbeam (2), and the lead screw nut (15) of the other lead screw (13) is connected to another crossbeam (2), so as to realize the independent control of the movement of the two crossbeams (2).

10. A glue-applying method using the CNC window sash glue-applying system according to any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Feeding and conveying; Place the window sash to be glued on the feeding assembly (7) and convey the window sash along the Y-axis to the central processing area of ​​the system; Step 2, clamping and initial positioning; control the two sets of clamping and flipping heads (4) to move into position along the Y-axis of the crossbeam (2), then drive the threaded rod (410) in the flipping beam (45) to rotate through the fourth motor (413), so that the clamping seats (461) of the two sets of clamping components (46) move towards each other, and drive the pressure block (464) to cooperate with the positioning plate (462) through the second cylinder (463) to clamp the left and right edges of the window sash; lift the window sash to the set height and move it above the positioning component by moving the second bracket (42) along the X-axis and sliding the lifting plate (43) in the vertical direction; Step 3: Four-corner clamping and vertical pressing; Two second motors (14) drive two sets of lead screws (13) to rotate, causing the two crossbeams (2) to move in opposite directions along the X-axis of the frame (1). At the same time, the first motors (314) of the four worktables (3) drive the drive gears (311) to roll on the first rack (313), causing the moving plate (31) to slide in opposite directions along the Y-axis, thereby reducing the glue injection space enclosed by the four sets of worktables (3) until the four corners of the window sash are clamped. The component is precisely held between the two limiting rods (34) on the four sets of platform plates (33); then, the first cylinder (310) of the pressing structure extends and retracts, causing the swing arm (39) to swing, so that the pressing shaft (37) and the pressing plate (38) rotate to the upper corner of the window sash. Then, the rodless cylinder (35) moves down in the vertical direction, causing the connecting plate (36) and the pressing plate (38) to move downward, pressing the window sash onto the platform plate (33); then, the clamping assembly (46) releases the window sash and returns to its original position. Step 4, front-side glue injection; the two glue injection heads (5) move along the Y-axis of the crossbeam (2) above the glue injection space; the swing cylinder (62) at the tail of the carrier plate (51) drives the sensor seat (63) to extend, and the edge position sensor (64) accurately determines the edge line of the window sash and the position of the glue injection head (55); the calibration cylinder (57) pulls the swing rod (511) through the fisheye bearing (510) according to the data fed back by the sensor, driving the rotating shaft (56) and the glue injection head (55) to rotate to calibrate the glue injection angle; the glue injection head (55) is started to inject glue, and at the same time the fifth motor drives the displacement gear (59) to roll on the arc rack (58), driving the glue seat and the glue injection head (55) to move along the arc track (52) to complete the glue injection around the front of the window sash; after the glue injection is completed, the glue injection head (5) returns to its original position; Step 5: Flipping and Reverse Glue Injection; The reverse action of the holding structure causes the pressing plate (38) to lift and rotate back to its original position. At the same time, the crossbeam (2) and the worktable (3) slightly separate to loosen the window sash; The two sets of clamping and flipping heads (4) reposition to clamp the two sides of the window sash. The lifting plate (43) rises to lift the window sash off the table (33). The third motor (49) drives the active gear (48) to rotate. Through the driven gear (47), the flipping beam (45) and the clamped window sash rotate 180° around the central axis (44) to achieve flipping; Then, the clamping and flipping head (4) puts the flipped window sash back onto the table (33) and repeats the four-corner clamping and vertical pressing action of Step 3. Then the glue injection head (5) advances again and repeats the action of Step 4 to complete the glue injection on the reverse side of the window sash; Step 6, detachment and unloading; After the reverse side is glued, the glue injection head (5) retracts, the holding structure and positioning components are fully released to release the window sash, the clamping and flipping head (4) securely places the glued window sash back onto the conveyor belt of the feeding component (7), and the conveyor belt transports the finished window sash out of the system.

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