A rotatable spraying automatic glue spraying equipment

Abstract

The application discloses a kind of rotatable automatic glue spraying equipment of spraying, belong to glue spraying equipment technical field, including spraying bin, exhaust fan, conveying unit, hanger, glue spraying robot, rotary fastening unit and main control cabinet, two groups of opening and closing doors are provided on the side wall of spraying bin, exhaust fan is installed at the top of spraying bin, conveying unit is set in pairs, and is inserted into the inside of spraying bin through opening and closing door, hook claw assembly is installed on conveying unit, hanger is hung on hook claw assembly, glue spraying robot is set in pairs, and is installed on the bottom surface of spraying bin, rotary fastening unit is installed on the bottom surface of spraying bin, and main control cabinet is set to the outside of spraying bin.The application is by being provided with rotary fastening unit, so that hanger can be stably fixed and controlled rotation in the process of spraying operation, improve the anti-interference ability of workpiece in the process of rotation, guarantee the complete coverage of spraying area and the uniformity of glue amount distribution.

Description

Technical Field

[0001] This invention relates to the field of adhesive spraying equipment technology, and more specifically to an automatic adhesive spraying equipment with a rotating spraying capability. Background Technology

[0002] In the automotive manufacturing industry, surface adhesive application to interior components is a crucial process for ensuring a strong bond between interior parts and between interior parts and the vehicle body. Automotive interior components requiring surface adhesive application mainly include dashboards, door panels, center console armrests, and pillar trim panels. These components are typically made of plastics, fabrics, leather, or composites of various materials. Adhesive is evenly sprayed onto their backs or specific areas, and then pressed together with foam layers, outer skins, or other substrates to form an automotive interior assembly with excellent appearance, feel, and acoustic performance. With the automotive industry's increasing demands for production efficiency and environmental protection, traditional manual adhesive application methods, due to issues such as inconsistent quality, material waste, and health hazards, have been gradually replaced by automated and robotic spraying systems.

[0003] In a typical automated adhesive spraying production line, a handling robot is usually used to pick up the workpiece and simply hang it on a fixed workpiece rack. Then, a spraying robot sprays adhesive onto the workpiece. In order to achieve comprehensive spraying of different areas such as the sides and back of the workpiece, the equipment is equipped with a rotating structure and a clamping structure to drive the workpiece rack and the workpiece to rotate to a predetermined posture.

[0004] However, the stability of the fit between the rotating and clamping structures and the workpiece holder in existing technologies is poor. Specifically: First, the workpiece holder is usually connected to the rotating structure through a simple mounting method, resulting in low frictional damping. This means that during operation, any minor external disturbance, such as airflow disturbance, vibration generated by equipment operation, workpiece center of gravity shift, or even the reaction force generated by the adhesive pressure on the workpiece surface during adhesive spraying by the spraying robot, can easily cause the workpiece holder to rotate or shift its position relative to the rotating structure, resulting in omissions in the spraying area or uneven adhesive distribution. Second, there are axial and radial clearances in the connection between the workpiece holder and the rotating and clamping structures, causing the workpiece holder to be in a "relaxed" state during rotation, which easily leads to axial movement and radial sway. The uncertainty caused by these clearances further deteriorates the workpiece positioning accuracy, causing the spraying trajectory to deviate from the preset path, seriously affecting the uniformity and consistency of the spraying quality.

[0005] Therefore, how to provide an automatic adhesive spraying device with rotatable spraying capability to overcome the shortcomings of the existing technology is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] To address this issue, the present invention provides an automatic adhesive spraying device with rotatable spraying capability, which solves the problems of missed spraying areas and uneven spraying caused by poor coordination stability between the rotating structure, clamping structure and workpiece hanger in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: This invention discloses an automatic adhesive spraying device with a rotatable spraying capability, comprising: The spraying chamber has two sets of opening and closing doors on its side wall; An exhaust fan is installed on top of the spray booth; The conveying units are arranged in pairs and extend into the spraying chamber through the opening and closing door. The conveying units are equipped with hook assemblies. A hanger is attached to the hook assembly and is used to fix the workpiece. A pair of glue-spraying robots are installed on the bottom surface of the spraying chamber. The glue-spraying robots are used to spray glue onto the workpieces on the rack. A rotary fastening unit is installed on the bottom surface of the spraying chamber. The rotary fastening unit is used to fix the bracket and drive it to rotate. The main control cabinet is located on the outside of the spraying chamber.

[0008] Furthermore, the conveying unit includes: The gantry frames are installed in pairs, with one end mounted on the outside of the spray booth and the other end passing through the opening and closing door and installed inside the spray booth. An electric slide table is installed on the top of the gantry frame, and the electric slide table can move horizontally along the gantry frame; The accordion covers are installed in pairs and sealed on both sides of the electric slide.

[0009] Furthermore, the hook assembly includes: The mounting plate is installed on the moving end of the electric slide table via a connecting plate; A rotating block is installed at the bottom of the mounting plate; The hook body is rotatably connected to the bottom of the mounting plate via the rotating block.

[0010] Furthermore, the rotary fastening unit includes: A rotary cylinder is mounted on the bottom surface of the spraying chamber via a column; The platform shell is a hollow cylindrical structure, and the platform shell is located on the outside of the rotary cylinder; A rotating platform is installed on the output end of the rotating cylinder, and two moving slots are opened opposite each other on the top of the rotating platform; The drive components are arranged in pairs and disposed within the moving slot; Fastening platforms, arranged in pairs, are mounted on the drive assembly and are used to secure the hanger from both sides.

[0011] Furthermore, the driving component includes: Linear guides, arranged in pairs, are installed on the bottom wall of the moving groove. A slider is slidably connected to the top of the linear guide, and a moving plate is installed on the top of the two sliders. A ball screw is mounted on the bottom wall of the moving groove via a bearing seat. A first bevel gear is mounted on one end of the ball screw. A nut seat is threaded onto the outer side wall of the ball screw, and the nut seat is connected to the bottom of the moving plate. A rotating shaft bracket is installed on the outer side wall of the rotating platform; The drive gear is rotatably connected within the rotating shaft bracket; The second bevel gear is rotatably connected inside the rotating shaft bracket and is coaxially arranged with the drive gear. The second bevel gear meshes with the first bevel gear. A ring rack is disposed on the inner side wall of the platform housing, and the ring rack is meshed with the drive gear.

[0012] Furthermore, the fastening platform includes a fastening platform body, a clamping plate, a clamping mechanism, a tensioning mechanism, and a pre-fixing mechanism. The fastening platform body is mounted on the top of the movable plate. The fastening platform body is T-shaped. A clamping mechanism is provided inside the fastening platform body. The clamping plate is mounted on the fastening platform body through the clamping mechanism. A tensioning mechanism is provided on the fastening platform body and the clamping plate. A pre-fixing mechanism is provided at the bottom of the clamping plate.

[0013] Furthermore, the clamping mechanism includes: Sliding grooves, arranged in pairs, are formed inside the main body of the fastening platform; The first sliding rods are arranged in pairs and slidably connected in the sliding groove. A first annular flange is formed on the circumferential sidewall of the first sliding rod. The clamping plate is installed at the ends of the two first sliding rods. A first spring is disposed inside the sliding groove, with one end of the first spring connected to the inner wall of the sliding groove and the other end of the first spring connected to the first annular flange.

[0014] Furthermore, the tensioning mechanism includes: Sliding columns, arranged in pairs, are fixedly installed on the top of the movable plate, and the fastening platform body is slidably connected to the top of the movable plate through the sliding columns; A third spring is sleeved on the outside of the sliding column. One end of the third spring is connected to the bottom of the fastening platform body, and the other end of the third spring is connected to the top of the moving plate. Arc-shaped sliding grooves are arranged in pairs and are formed opposite to each other on the inner sidewall of the moving groove; Guide wheels, arranged in pairs, are rotatably connected to the outer side wall of the fastening platform body, and the guide wheels are rolled within the arc-shaped sliding groove; Through holes, arranged in pairs, are formed through the top of the clamping plate; The second sliding rod is arranged in pairs and slidably connected in the through hole. The lower end of the second sliding rod has a second annular flange, and the upper end of the second sliding rod is provided with a tensioning plate. The second spring is sleeved on the outside of the second sliding rod. One end of the second spring is connected to the bottom of the clamping plate, and the other end of the second spring is connected to the top of the second annular flange.

[0015] Furthermore, the pre-fixing mechanism includes a support plate and an electromagnet. The support plate is installed at the bottom of the clamping plate in one of the fastening platforms, and an electromagnet for magnetically attracting the hanger is installed at the top of the support plate. An avoidance groove for avoiding the support plate is opened at the bottom of the clamping plate in the other fastening platform.

[0016] Furthermore, the clamping plate has arc-shaped guide portions at both ends.

[0017] The present invention has the following advantages: This invention, by setting up a rotary fastening unit and a hook assembly, enables the hanger to be stably fixed and rotated in a controlled manner during the spraying operation. The rotary fastening unit can apply a stable clamping force to the hanger while eliminating small gaps in the axial and radial directions, improving the anti-interference ability of the workpiece during rotation, effectively avoiding accidental displacement caused by airflow disturbance, equipment vibration, center of gravity shift, or reaction force of spraying pressure, and ensuring complete coverage of the spraying area and uniform distribution of adhesive.

[0018] By setting up a drive component, the two clamping platforms automatically and synchronously move toward the center during the rotation of the rotating platform. This eliminates the need for an additional power source to center and clamp the hanger, ensuring that the hanger is always at the center of rotation of the rotating platform and improving the repeatability and positioning accuracy of the spraying trajectory.

[0019] By setting a pre-fixing mechanism, the hanger is initially positioned before being clamped. This allows it to work with the glue spraying robot to spray the workpiece on the hanger, and also ensures that the hanger is in the correct position and posture before the clamping platform clamps it from both sides, thus improving the accuracy and reliability of clamping.

[0020] By setting up a clamping mechanism, the reliability of clamping is ensured, and the deformation of the workpiece or hanger that may be caused by rigid clamping is avoided. At the same time, the preload of the first spring can absorb minor vibrations, further enhancing the stability of the hanger during rotation.

[0021] By setting up a tensioning mechanism, the hanger is kept in a downward tensioned state during rotation, eliminating the axial and radial gaps between the hanger and the hook body. This solves the problem of poor positioning accuracy caused by "looseness" in the existing technology and significantly improves the consistency and uniformity of the spraying quality. Attached Figure Description

[0022] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0024] Figure 1 A perspective view of the automatic adhesive spraying device with rotatable spraying capability provided by the present invention; Figure 2 A perspective view of the internal structure of the automatic glue spraying device with rotatable spraying capability provided by the present invention; Figure 3 A perspective view of the hook assembly provided by the present invention; Figure 4 A perspective view of the rotary fastening unit provided by the present invention; Figure 5 A cross-sectional view of the rotary fastening unit provided by the present invention; Figure 6 A cross-sectional view of the driving component provided by the present invention; Figure 7 A perspective view of the driving component provided by the present invention; Figure 8 A perspective view of the fastening platform provided by the present invention; Figure 9 A cross-sectional view of the fastening platform provided by the present invention; Figure 10 A perspective view of the clamping plate provided by the present invention; Figure 11 This is a schematic diagram of the pre-fixed state of the clamp provided by the present invention; Figure 12 This is a schematic diagram of the clamping state provided by the present invention.

[0025] In the diagram: 1. Spraying chamber; 11. Opening and closing door; 2. Exhaust fan; 3. Conveying unit; 31. Gantry frame; 32. Electric slide table; 33. Bellows cover; 4. Claw assembly; 41. Mounting plate; 42. Rotating block; 43. Claw body; 5. Hanger; 6. Glue spraying robot; 7. Rotary fastening unit; 71. Rotary cylinder; 72. Platform shell; 73. Rotary platform; 74. Moving slot; 75. Drive assembly; 750. Linear guide rail; 751. Slider; 752. Moving plate; 753. Ball screw; 754. First bevel gear; 755. Nut seat; 756. Rotary shaft bracket; 75 7 Drive gear; 758 Second bevel gear; 759 Ring rack; 76 Fastening platform; 761 Fastening platform body; 762 Clamping plate; 763 Guide part; 771 Sliding groove; 772 First sliding rod; 773 First annular flange; 774 First spring; 781 Sliding column; 782 Third spring; 783 Arc-shaped sliding groove; 784 Guide wheel; Through hole; 785 Second sliding rod; 786 Second annular flange; 787 Tensioning plate; 788 Second spring; 791 Support plate; 792 Electromagnet; 793 Clearance groove; 8 Main control cabinet. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please refer to Figures 1-12 The automatic glue spraying device with rotatable spraying capability disclosed in this invention will now be described. This invention consists of seven parts, as follows: Figure 1 , Figure 2As shown, the system includes a spraying chamber 1, an exhaust fan 2, a conveying unit 3, a hanging bracket 5, a glue-spraying robot 6, a rotating fastening unit 7, and a main control cabinet 8. Two sets of opening and closing doors 11 are installed on the side wall of the spraying chamber 1. The exhaust fan 2 is installed on the top of the spraying chamber 1. The conveying units 3 are arranged in pairs, extending through the opening and closing doors 11 into the interior of the spraying chamber 1. A hook assembly 4 is installed on the conveying unit 3, and the hanging bracket 5 is hung on the hook assembly 4. The hanging bracket 5 is used to fix the workpiece. The glue-spraying robots 6 are arranged in pairs and installed on the bottom surface of the spraying chamber 1. The glue-spraying robots 6 are used to spray glue onto the workpieces on the hanging bracket 5. The rotating fastening unit 7 is installed on the bottom surface of the spraying chamber 1. The rotating fastening unit 7 is used to fix the hanging bracket 5 and drive it to rotate. The main control cabinet 8 is located on the outside of the spraying chamber 1.

[0028] The automatic glue-spraying equipment with rotatable spraying capability of this application also includes an external placement table, a GP25 robot, and a drying oven. The placement table is located in front of the conveying unit 3, and the GP25 robot is located between the conveying unit 3 and the placement table. The GP25 robot is used to place the uncoated hangers 5 into the conveying unit 3 and to remove the coated hangers 5 from the conveying unit 3 and place them into the drying oven via a hanger cart. The glue-spraying robot 6 is an EPX2050 robot.

[0029] The front wall of the spraying chamber 1 is equipped with two sets of automatically opening and closing doors 11, and the rear wall of the spraying chamber 1 is equipped with an inspection door. An exhaust fan 2 is used for filtration and ventilation within the spraying chamber 1. The main control cabinet 8 includes a power supply system and a communication and control system. The power supply system supplies power to the equipment and converts voltage; the communication and control system can control the equipment via a PLC to execute automated processes according to preset programs, and collects and processes status signals from all equipment to ensure coordinated operation.

[0030] In use, the hanger is pushed to the placement table by the hanger cart and the part is placed there. After completion, it is removed. After the grating senses the person's exit, the GP25 robot grabs the hanger and places it in the hanging position. Two hangers 5 are set as a group, and two groups are set up. They are respectively inserted into the left and right parts of the conveying unit 3. The left and right are combined into a set of hangers and enter the spraying chamber 1 for spraying. Each glue spraying robot 6 sprays a set of hangers. After the A side is sprayed, the B side is sprayed by rotating the fastening unit 7 and the hook assembly 4 by rotating 180 degrees. After spraying one side of the hanger, the glue spraying robot 6 rotates 180 degrees to spray the other side of the hanger. After the spraying is completed, the GP25 robot removes the hanger and puts it into the drying oven. The drying oven outlet is equipped with a hanger cart. After the hanger is dried, the part is taken out.

[0031] like Figure 2As shown, the conveying unit 3 includes a gantry frame 31, an electric slide table 32, and a bellows cover 33. The gantry frames 31 are arranged in pairs, with one end installed on the outside of the spraying chamber 1 and the other end of the gantry frame 31 passing through the opening and closing door 11 and installed inside the spraying chamber 1. The electric slide table 32 is installed on the top of the gantry frame 31 and can move horizontally along the gantry frame 31. The bellows covers 33 are arranged in pairs and are sealed on both sides of the electric slide table 32.

[0032] In this embodiment, the positions of the gantry frame 31, the electric slide 32, and the bellows cover 33 are as follows: Figure 2 As shown. The electric slide table 32 is mounted on the crossbeam of the gantry frame 31. The electric slide table 32 can move horizontally along the gantry frame 31 and feed the hanger 5 and the workpiece in and out through the hook assembly 4. The electric slide table 32 is a common horizontal moving device in the prior art. It can be a slide table module composed of a servo motor, rack, guide rail, and guide rail moving block, or it can be a moving electric cylinder or other equipment. The electric slide table 32 is covered with a bellows cover 33 to seal both ends, and the motor is equipped with a protective cover to prevent glue mist from entering the slide table system.

[0033] like Figure 2 , Figure 3 As shown, the hook assembly 4 includes a mounting plate 41, a rotating block 42, and a hook body 43. The mounting plate 41 is mounted on the moving end of the electric slide table 32 via a connecting plate. The rotating block 42 is mounted on the bottom of the mounting plate 41. The hook body 43 is rotatably connected to the bottom of the mounting plate 41 via the rotating block 42.

[0034] In this embodiment, the structure of the bracket 5 is as follows: Figure 2 As shown, the structure of the hook body 43 is as follows: Figure 3 As shown, the hanger 5 is suspended from the hook body 43 by the GP25 robot, and the hook body 43 can limit the hanger 5 in a horizontal direction. The hook body 43 is installed at the bottom of the rotating block 42, and can drive the hanger 5 to rotate in conjunction with the rotating fastening unit 7. Preferably, the rotating block 42 is provided with a damping structure to enhance the stability of the hook body 43.

[0035] In the hanger spraying operation, the hanger 5 is attached to the hook body 43 by the GP25 robot. There are inevitably small axial and radial gaps between the hanger 5 and the hook body 43. These small gaps become particularly noticeable when the hanger 5 rotates, specifically manifesting as the workpiece hanger 5 being in a "slack" state during rotation, making it susceptible to shaking due to external influences. Therefore, by setting up the rotation fastening unit 7 and the hook assembly 4, the hanger 5 can be stably fixed and rotated in a controlled manner during the spraying operation. Specifically, the electric slide table 32 transports the hanger 5 carrying the workpiece to the top of the rotary fastening unit 7. The fastening platform 76 clamps and fixes the hanger 5 from both sides. The rotary cylinder 71 drives the rotary platform 73 to rotate, thereby rotating the hanger 5 and the workpiece to the predetermined spraying posture. During this process, the rotary fastening unit 7 can apply a stable clamping force to the hanger 5 while eliminating small gaps in the axial and radial directions. This significantly improves the anti-interference ability of the workpiece during rotation and effectively avoids accidental displacement caused by airflow disturbance, equipment vibration, center of gravity shift or spraying pressure reaction force, ensuring complete coverage of the spraying area and uniform distribution of adhesive.

[0036] like Figure 4 , Figure 5 As shown, the rotary fastening unit 7 includes a rotary cylinder 71, a platform housing 72, a rotary platform 73, a drive assembly 75, and a fastening platform 76. The rotary cylinder 71 is mounted on the bottom surface of the spray booth 1 via a column. The platform housing 72 is a hollow cylindrical structure and is located outside the rotary cylinder 71. The rotary platform 73 is mounted on the output end of the rotary cylinder 71. Two moving slots 74 are opened opposite each other on the top of the rotary platform 73. The drive assemblies 75 are arranged in pairs and are located in the moving slots 74. The fastening platforms 76 are arranged in pairs and are mounted on the drive assemblies 75. The fastening platforms 76 are used to fix the hangers 5 from both sides.

[0037] In this embodiment, the rotary cylinder 71, platform housing 72, rotary platform 73, drive assembly 75, and fastening platform 76 are positioned as follows: Figure 4 , Figure 5 As shown. The platform housing 72 is located outside the column where the rotary cylinder 71 is mounted, and the platform housing 72 surrounds the rotary cylinder 71 and the rotary platform 73. Two radially symmetrical moving slots 74 are formed on the top of the rotary platform 73, and the drive assembly 75 and the fastening platform 76 are disposed within the moving slots 74. The rotary cylinder 71 is the sole power source for the rotary fastening unit 7. When the rotary cylinder 71 drives the rotary platform 73 to rotate, it drives the fastening platform 76 to fix the bracket 5 through the drive assembly 75. The rotary fastening unit 7 can be sealed to prevent adhesive mist. The specific sealing method is a known sealing method in the art and will not be described in detail here.

[0038] like Figure 6 , Figure 7 As shown, the drive assembly 75 includes a linear guide rail 750, a ball screw 753, a shaft bracket 756, a drive gear 757, a second bevel gear 758, and a ring rack 759. The linear guide rails 750 are arranged in pairs and mounted on the bottom wall of the moving groove 74. A slider 751 is slidably connected to the top of each linear guide rail 750. A moving plate 752 is mounted on the top of each slider 751. The ball screw 753 is mounted on the bottom wall of the moving groove 74 via a bearing seat. A first bevel gear 754 is mounted on one end of the ball screw 753. A nut seat 755 is threaded onto the outer wall of the rotating platform 73. The nut seat 755 is connected to the bottom of the moving plate 752. The rotating shaft bracket 756 is installed on the outer wall of the rotating platform 73. The drive gear 757 is rotatably connected inside the rotating shaft bracket 756. The second bevel gear 758 is rotatably connected inside the rotating shaft bracket 756 and is coaxially arranged with the drive gear 757. The second bevel gear 758 meshes with the first bevel gear 754. The annular rack 759 is arranged on the inner wall of the platform housing 72 and meshes with the drive gear 757.

[0039] In this embodiment, the linear guide 750, ball screw 753, first bevel gear 754, drive gear 757, second bevel gear 758, and ring rack 759 are positioned as follows: Figure 6 As shown. The linear guide 750 and ball screw 753 are arranged radially along the rotary platform 73, and the bottom of the moving plate 752 and the nut seat 755 are fixedly connected. The rotary platform 73 is cut on both sides near the moving groove 74 to reserve sufficient installation space for the rotating shaft bracket 756. The drive gear 757 is rotatably mounted in the rotating shaft bracket 756 via a rotating shaft inside the rotating shaft bracket 756. The annular rack 759 is fixedly mounted on the inner side wall of the platform housing 72 and meshes with the drive gear 757. The second bevel gear 758 is coaxially arranged with the drive gear 757. One end of the ball screw 753 passes through the bearing seat and is provided with a first bevel gear 754 that meshes with the second bevel gear 758.

[0040] In use, when the rotary cylinder 71 drives the rotary platform 73 to rotate, the annular rack 759 on the inner side of the platform housing 72 drives the drive gear 757 to rotate. The drive gear 757 drives the first bevel gear 754 to rotate through the coaxially arranged second bevel gear 758, which in turn drives the ball screw 753 to rotate. This causes the nut seat 755 to drive the moving plate 752 and the fastening platform 76 to move inward along the linear guide rail 750, thereby fixing the hanger 5.

[0041] By setting the drive component 75, the two fastening platforms 76 automatically and synchronously move toward the center during the rotation of the rotating platform 73. The centering and clamping of the hanger 5 can be achieved without additional power components, ensuring that the hanger 5 is always at the rotation center of the rotating platform 73, thus improving the repeatability and positioning accuracy of the spraying trajectory.

[0042] like Figure 8 , Figure 9 , Figure 10 As shown, the fastening platform 76 includes a fastening platform body 761, a clamping plate 762, a clamping mechanism, a tensioning mechanism, and a pre-fixing mechanism. The fastening platform body 761 is mounted on the top of the movable plate 752. The fastening platform body 761 is T-shaped. A clamping mechanism is provided inside the fastening platform body 761. The clamping plate 762 is mounted on the fastening platform body 761 through the clamping mechanism. A tensioning mechanism is provided on the fastening platform body 761 and the clamping plate 762. A pre-fixing mechanism is provided at the bottom of the clamping plate 762. Preferably, arc-shaped guide portions 763 are formed at both ends of the clamping plate 762.

[0043] In this embodiment, the clamping plate 762 is positioned as follows: Figure 8 As shown, the clamping plates 762 on the two relatively fastened platform bodies 761 are staggered. The clamping process of the clamping plates 762 involves two stages: first, as shown... Figure 11 As shown, the conveying unit 3 moves the hanger 5 between the two clamping plates 762. The clamping plates 762 on both sides pre-fix the hanger 5 through the pre-fixing mechanism. At this time, the glue spraying robot 6 can spray the A surface; II. As shown Figure 12 As shown, during the rotation of the rotating platform 73, the fastening platform 76 clamps and tightens the hanger 5 through the clamping mechanism and the tensioning mechanism, so that the hanger 5 can be stably fixed and rotated in a controlled manner during the spraying operation. At this time, the glue spraying robot 6 can spray the B side or any desired angle.

[0044] like Figure 8 , Figure 9 As shown, the clamping mechanism includes a sliding groove 771, a first sliding rod 772, and a first spring 774. The sliding grooves 771 are arranged in pairs and are formed inside the fastening platform body 761. The first sliding rods 772 are arranged in pairs and are slidably connected inside the sliding grooves 771. A first annular flange 773 is formed on the circumferential sidewall of the first sliding rod 772. The clamping plate 762 is installed at the ends of the two first sliding rods 772. The first spring 774 is disposed inside the sliding groove 771. One end of the first spring 774 is connected to the inner wall of the sliding groove 771, and the other end of the first spring 774 is connected to the first annular flange 773.

[0045] In this embodiment, the sliding groove 771, the first sliding rod 772, and the first spring 774 are positioned as follows: Figure 9As shown, when the fastening platform 76 moves towards the hanger 5, the clamping plate 762 first contacts the hanger 5. Then, the fastening platform body 761 continues to move. At this time, the first sliding rod 772 slides relative to the hanger 5 within the sliding groove 771, and the first spring 774 is compressed. The elastic force of the first spring 774 causes the clamping plate 762 to clamp the hanger 5 in a flexible manner. Furthermore, as the fastening platform body 761 continues to move, according to Hooke's Law, the greater the compression of the spring, the greater the elastic force it generates, and the greater the clamping force of the clamping plates 762 on the hanger 5, thus increasing the frictional damping between the hanger 5 and the contact surface of the clamping plate 762.

[0046] By setting up a clamping mechanism, the reliability of clamping is ensured, and the deformation of the workpiece or the hanger 5 that may be caused by rigid clamping is avoided. At the same time, the preload of the first spring 774 can absorb minor vibrations, further enhancing the stability of the hanger 5 during rotation.

[0047] It is worth noting that when adjusting the size of the hanging bracket 5, the clamping platform body 761 equipped with this clamping mechanism can automatically adjust the clamping position according to the actual size of the hanging bracket 5 and achieve synchronous centering clamping during rotation, as long as the length of the hanging bracket 5 remains unchanged.

[0048] like Figure 8 , Figure 9 , Figure 10 As shown, the tensioning mechanism includes a sliding column 781, a third spring 782, an arc-shaped groove 783, a guide wheel 784, a through hole, a second sliding rod 785, and a second spring 788. The sliding columns 781 are arranged in pairs and fixedly installed on the top of the moving plate 752. The fastening platform body 761 is slidably connected to the top of the moving plate 752 through the sliding columns 781. The third spring 782 is sleeved on the outside of the sliding column 781. One end of the third spring 782 is connected to the bottom of the fastening platform body 761, and the other end of the third spring 782 is connected to the top of the moving plate 752. The arc-shaped grooves 783 are arranged in pairs and are opened opposite each other on the inner side of the moving groove 74. On the wall, guide wheels 784 are arranged in pairs and rotatably connected to the outer wall of the fastening platform body 761. The guide wheels 784 are rolled in the arc-shaped sliding groove 783. Through holes are arranged in pairs and are opened through the top of the clamping plate 762. Second sliding rods 785 are arranged in pairs and slidably connected in the through holes. The lower end of the second sliding rod 785 forms a second annular flange 786. The upper end of the second sliding rod 785 is provided with a tensioning plate 787. The second spring 788 is sleeved on the outside of the second sliding rod 785. One end of the second spring 788 is connected to the bottom of the clamping plate 762, and the other end of the second spring 788 is connected to the top of the second annular flange 786.

[0049] In this embodiment, the structure and arrangement of the sliding post 781, the third spring 782, the guide wheel 784, the second sliding rod 785, and the second spring 788 are as follows: Figure 8 , Figure 9 , Figure 10 As shown. The through hole is a connecting hole for the second sliding rod 785 to slide, so its specific location is not shown. The sliding post 781 is vertically mounted on the top of the moving plate 752. A limit flange is provided at the upper end of the sliding post 781. The fastening platform body 761 is slidably connected to the sliding post 781. The third spring 782 always applies an upward elastic force to the fastening platform body 761, causing the fastening platform body 761 to have a tendency to slide upward relative to the moving plate 752. The shape of the arc-shaped groove 783 is as follows. Figure 9 As shown, the arc-shaped slide 783 extends from the outside of the moving groove 74 to the inside of the moving groove 74 and gradually bends downward, and the guide wheel 784 can move along the arc-shaped slide 783. When the fastening platform body 761 moves relative to it, the guide wheel 784 can drive the fastening platform body 761 to gradually move downward along the arc-shaped slide 783.

[0050] When the main body of the fastening platform 761 moves relative to the other, such as Figure 12 As shown, the two side clamps 762 clamp the bracket 5, and the guide wheel 784 drives the fastening platform body 761 to gradually move down along the arc-shaped slide 783. The tensioning plate 787 abuts against the top of the horizontal tube at the lower end of the bracket 5, forming a continuous downward force on the bracket 5. This downward force eliminates the axial movement and radial sway gap between the bracket 5 and the hook body 43, so that the bracket 5 is in a "tight" and stable state when rotating. This solves the problem of poor positioning accuracy caused by "looseness" in the prior art and significantly improves the consistency and uniformity of the spraying quality.

[0051] By setting a tensioning mechanism, the hanger 5 is kept in a downward tensioned state during rotation, eliminating the axial and radial gaps between the hanger 5 and the hook body 43. This solves the problem of poor positioning accuracy caused by "looseness" in the prior art and significantly improves the consistency and uniformity of the spraying quality.

[0052] like Figure 8 , Figure 10 As shown, the pre-fixing mechanism includes a support plate 791 and an electromagnet 792. The support plate 791 is installed at the bottom of the clamping plate 762 in one of the fastening platforms 76, and the electromagnet 792 for the magnetic hanging bracket 5 is installed at the top of the support plate 791. The bottom of the clamping plate 762 in the other fastening platform 76 is provided with a clearance groove 793 for avoiding the support plate 791.

[0053] In this embodiment, the positions of the support plate 791, electromagnet 792, and clearance groove 793 are as follows: Figure 10As shown. When the conveying unit 3 moves the hanger 5 between the two clamping plates 762, the support plate 791 supports the hanger 5 from the bottom. After the electromagnet 792 is energized, it generates a magnetic force to attract the hanger 5 onto the support plate 791, thus achieving pre-fixation between the hanger 5 and the rotating fastening unit 7. At this time, the glue spraying robot 6 can spray the A side of the workpiece on the hanger. After the spraying is completed, the electromagnet 792 can be de-energized and the hanger 5 can be released.

[0054] By setting a pre-fixing mechanism, the hanger 5 is initially positioned before being clamped, which can cooperate with the glue spraying robot 6 to spray the workpiece on the hanger, and also ensure that the hanger 5 is in the correct position and posture before the fastening platform 76 clamps it from both sides, thus improving the accuracy and reliability of clamping.

[0055] The usage process of this invention embodiment is as follows: First, the hanger enters the preset position of the spraying chamber 1 through the conveying unit 3. When the conveying unit 3 moves the hanger 5 between the two clamping plates 762, the support plate 791 supports the hanger 5 from the bottom. After the electromagnet 792 is energized, it generates magnetic force to attract the hanger 5 to the support plate 791. The glue spraying robot 6 sprays the A side of the workpiece on the hanger. Then, the electromagnet 792 is de-energized and releases the hanger 5. The rotary cylinder 71 drives the rotary platform 73 to rotate. The annular rack 759 on the inner side of the platform housing 72 drives the drive gear 757 to rotate. The drive gear 757 drives the first bevel gear 754 to rotate through the coaxially arranged second bevel gear 758, which in turn drives the ball screw 753 to rotate. This causes the nut seat 755 to drive the moving plate 752 and the fastening platform 76 to move inward along the linear guide rail 750. During this process, the clamping plate 762 first contacts the hanger 5, and then the fastening platform body 761 continues to move. At this time, the first... The sliding rod 772 slides relative to the sliding groove 771, the first spring 774 is compressed, and the elastic force of the first spring 774 causes the clamping plate 762 to clamp the hanger 5 in a flexible manner. The clamping plates 762 on both sides clamp the hanger 5. The guide wheel 784 drives the fastening platform body 761 to gradually move down along the arc-shaped sliding groove 783. The tensioning plate 787 abuts against the top of the horizontal tube at the lower end of the hanger 5, forming a continuous downward force on the hanger 5, further eliminating the axial movement and radial sway gap between the hanger 5 and the hook body 43, so that the hanger 5 is in a "tight" stable state when rotating. Finally, the adhesive spraying robot 6 sprays adhesive onto the workpiece on the hanger at a preset rotation angle.

[0056] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. An automatic adhesive spraying device with a rotating spraying capability, characterized in that, include: The spraying chamber (1) has two sets of opening and closing doors (11) on its side wall. An exhaust fan (2) is installed on top of the spraying chamber (1); The conveying units (3) are arranged in pairs and extend into the spraying chamber (1) through the opening and closing door (11). The conveying units (3) are equipped with hook assemblies (4). Hanger (5) is hung on the hook assembly (4) and the hanger (5) is used to fix the workpiece; A pair of glue-spraying robots (6) are installed on the bottom surface of the spraying chamber (1). The glue-spraying robots (6) are used to spray glue onto the workpieces on the hanger (5). A rotating fastening unit (7) is installed on the bottom surface of the spraying chamber (1). The rotating fastening unit (7) is used to fix the bracket (5) and drive it to rotate. The main control cabinet (8) is located on the outside of the spraying chamber (1).

2. The automatic adhesive spraying equipment with rotatable spraying capability as described in claim 1, characterized in that, The conveying unit (3) includes: The gantry frame (31) is installed in pairs, with one end installed on the outside of the spraying chamber (1) and the other end of the gantry frame (31) passing through the opening and closing door (11) and installed inside the spraying chamber (1); An electric slide (32) is installed on the top of the gantry (31), and the electric slide (32) can move horizontally along the gantry (31); The accordion covers (33) are arranged in pairs and sealed on both sides of the electric slide (32).

3. The automatic glue spraying equipment with rotatable spraying capability as described in claim 2, characterized in that, The hook assembly (4) includes: Mounting plate (41) is mounted on the moving end of the electric slide (32) via connecting plate; A rotating block (42) is installed on the bottom of the mounting plate (41); The hook body (43) is rotatably connected to the bottom of the mounting plate (41) via the rotating block (42).

4. The automatic glue spraying equipment with rotatable spraying capability as described in claim 1, characterized in that, The rotary fastening unit (7) includes: A rotary cylinder (71) is mounted on the bottom surface of the spraying chamber (1) via a column; The platform shell (72) is a hollow cylindrical structure, and the platform shell (72) is located on the outside of the rotary cylinder (71); A rotating platform (73) is installed on the output end of the rotating cylinder (71), and two moving slots (74) are opened opposite each other on the top of the rotating platform (73). The drive components (75) are arranged in pairs and disposed within the moving slot (74); Fastening platforms (76), arranged in pairs, are mounted on the drive assembly (75) for securing the hanger (5) from both sides.

5. The automatic adhesive spraying equipment with rotatable spraying capability as described in claim 4, characterized in that, The drive component (75) includes: Linear guide rails (750) are arranged in pairs and installed on the bottom wall of the moving groove (74). A slider (751) is slidably connected to the top of the linear guide rail (750), and a moving plate (752) is installed on the top of the two sliders (751). A ball screw (753) is mounted on the bottom wall of the moving groove (74) via a bearing seat. A first bevel gear (754) is mounted on one end of the ball screw (753). A nut seat (755) is threaded onto the outer side wall of the ball screw (753). The nut seat (755) is connected to the bottom of the moving plate (752). A pivot bracket (756) is mounted on the outer wall of the rotating platform (73); The drive gear (757) is rotatably connected within the rotating shaft bracket (756); The second bevel gear (758) is rotatably connected inside the rotating shaft bracket (756) and coaxially arranged with the drive gear (757). The second bevel gear (758) meshes with the first bevel gear (754). An annular rack (759) is disposed on the inner sidewall of the platform housing (72), and the annular rack (759) meshes with the drive gear (757).

6. The automatic adhesive spraying equipment with rotatable spraying capability as described in claim 5, characterized in that, The fastening platform (76) includes a fastening platform body (761), a clamping plate (762), a clamping mechanism, a tensioning mechanism, and a pre-fixing mechanism. The fastening platform body (761) is installed on the top of the movable plate (752). The fastening platform body (761) is T-shaped. The clamping mechanism is provided inside the fastening platform body (761). The clamping plate (762) is installed on the fastening platform body (761) through the clamping mechanism. The tensioning mechanism is provided on the fastening platform body (761) and the clamping plate (762). The pre-fixing mechanism is provided at the bottom of the clamping plate (762).

7. The automatic adhesive spraying equipment with rotatable spraying capability as described in claim 6, characterized in that, The clamping mechanism includes: Sliding grooves (771) are arranged in pairs and are formed inside the fastening platform body (761); The first sliding rods (772) are arranged in pairs and slidably connected in the sliding groove (771). A first annular flange (773) is formed on the circumferential sidewall of the first sliding rod (772). The clamping plate (762) is installed at the ends of the two first sliding rods (772). A first spring (774) is disposed inside the sliding groove (771). One end of the first spring (774) is connected to the inner wall of the sliding groove (771), and the other end of the first spring (774) is connected to the first annular flange (773).

8. The automatic adhesive spraying equipment with rotatable spraying capability as described in claim 6, characterized in that, The tensioning mechanism includes: Sliding columns (781) are arranged in pairs and fixedly installed on the top of the movable plate (752). The fastening platform body (761) is slidably connected to the top of the movable plate (752) through the sliding columns (781). The third spring (782) is sleeved on the outside of the sliding column (781). One end of the third spring (782) is connected to the bottom of the fastening platform body (761), and the other end of the third spring (782) is connected to the top of the moving plate (752). Arc-shaped grooves (783) are arranged in pairs and are formed opposite to each other on the inner sidewall of the moving groove (74); Guide wheels (784) are arranged in pairs and rotatably connected to the outer side wall of the fastening platform body (761). The guide wheels (784) are rolled in the arc-shaped groove (783). Through holes, arranged in pairs, extending through the top of the clamping plate (762); The second sliding rod (785) is arranged in pairs and slidably connected in the through hole. The lower end of the second sliding rod (785) is formed with a second annular flange (786), and the upper end of the second sliding rod (785) is provided with a tensioning plate (787). The second spring (788) is sleeved on the outside of the second sliding rod (785). One end of the second spring (788) is connected to the bottom of the clamp (762), and the other end of the second spring (788) is connected to the top of the second annular flange (786).

9. The automatic adhesive spraying equipment with rotatable spraying capability as described in claim 6, characterized in that, The pre-fixing mechanism includes a support plate (791) and an electromagnet (792). The support plate (791) is installed at the bottom of the clamp (762) in one of the fastening platforms (76), and an electromagnet (792) for magnetically attracting the hanger (5) is installed at the top of the support plate (791). The clamp (762) in the other fastening platform (76) has a clearance groove (793) at the bottom for avoiding the support plate (791).

10. The automatic adhesive spraying equipment with rotatable spraying capability as described in claim 9, characterized in that, The clamp (762) has arc-shaped guide portions (763) at both ends.

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