An assembly device for laminated glass production

Abstract

This invention discloses an assembly device for laminated glass production. The assembly device includes a glass positioning support platform for supporting and fixing the lower glass layer and the PVB film, and a machine head capable of feeding along the glass cutting edge. A main shaft is rotatably mounted inside the machine head, and a servo motor is fixed to the side wall of the machine head, with the drive end of the servo motor fixedly connected to the main shaft. A disc blade for cutting the film, a pre-compression cam for driving pre-compression action, and an exhaust cam for driving exhaust action are coaxially fixed on the main shaft. A pre-compression locking assembly that works in conjunction with the pre-compression cam is provided inside the machine head. This invention provides an assembly device for laminated glass production that achieves rigid linkage between cutting and exhaust through a single drive source, simultaneously improving cutting dimensional accuracy, eliminating air bubble defects during lamination, simplifying equipment structure, reducing production and maintenance costs, and adapting to the production of various types of laminated glass.

Description

Technical Field

[0001] This invention belongs to the field of laminated glass assembly technology, and more specifically, relates to an assembly device for laminated glass production. Background Technology

[0002] Laminated glass is a core material in building safety, automotive and rail transportation, new energy photovoltaics, and high-end electronic display fields. The dimensional accuracy, optical consistency, and structural weather resistance of the finished product directly determine the safety performance and compliance of the end product. As the core process of laminated glass production, the assembly of laminated glass directly determines the mass production yield, production efficiency, and overall manufacturing cost.

[0003] In the lamination and assembly process, a fixed workflow has long been adopted: film cutting to a fixed length → film lamination and assembly → roll pressing and pre-pressing for venting. Film cutting and pre-pressing for venting are two core processes with clearly defined functional boundaries that must be implemented independently. Consequently, the industry has developed a fixed R&D paradigm of designing and optimizing each process separately. To address the issue of insufficient dimensional accuracy in film cutting, existing technologies focus on improving the accuracy of the cutting positioning structure, cutting execution components, and positioning detection system. To address the issue of residual air bubbles at the glass-film interface after lamination, existing technologies focus on optimizing the pressing and venting structure, pressing process parameters, and film pre-lamination methods.

[0004] However, no matter how independently the two processes mentioned above are optimized, it is impossible to avoid the mutual transmission and aggravation of the two types of defects, and it is always impossible to simultaneously improve the cutting dimensional accuracy and the air release effect of the lamination. Specifically, regarding the problem of air bubbles at the lamination interface, the core improvement logic of the existing technology is to enhance the fluidity of the adhesive film during the rolling process by increasing the rolling pressure, extending the rolling path, and reducing the rolling speed, so as to squeeze out the air remaining at the interface. However, PVB and other adhesive films are viscoelastic polymer materials. The increase in rolling pressure and the extension of contact time will inevitably lead to irreversible tensile deformation and subsequent rebound of the adhesive film, which will directly destroy the dimensional accuracy already achieved in the cutting process and cause defects such as out-of-tolerance dimensions of the adhesive film edge and uneven adhesive overflow. Regarding the issue of film cutting accuracy, the core improvement logic of existing technologies is to add a pre-pressure positioning structure to achieve partial pre-bonding of the film and glass in advance, so as to avoid the film from shifting due to the pull of the cutting tool during the cutting process, thereby improving the cutting dimensional accuracy. However, the pre-bonding of the film edge will form a closed interface boundary before lamination. After lamination, the air in the interface cannot be smoothly discharged through the edge of the film, which will instead aggravate the generation of interface bubble defects. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide an assembly device for laminated glass production.

[0006] To achieve the aforementioned objectives, the technical solution adopted by this invention includes: A glass positioning support platform for supporting and fixing the lower glass layer and PVB film, and a machine head capable of feeding along the glass cutting edge; a main shaft is rotatably mounted inside the machine head, and a servo motor is fixed to the side wall of the machine head, with the drive end of the servo motor fixedly connected to the main shaft; a disc blade for cutting the film, a pre-pressure cam for driving the pre-pressure action, and an exhaust cam for driving the exhaust action are coaxially fixed on the main shaft; a pre-pressure locking assembly that works in conjunction with the pre-pressure cam is provided inside the machine head, with the pre-pressure head of the pre-pressure locking assembly located at the front end of the disc blade in the feed direction; a synchronous exhaust assembly that works in conjunction with the exhaust cam is provided inside the machine head, with the exhaust roller of the synchronous exhaust assembly located at the rear end of the disc blade in the feed direction, and the exhaust roller is drivenly connected to the main shaft to achieve synchronous rotation with the main shaft.

[0007] In this invention, a single servo motor drives a single spindle to synchronously drive the three core actuators: cutting, pre-pressure locking, and venting. This completely breaks the industry's rigid R&D paradigm where the two processes of film cutting and pre-pressure venting are independent and optimized separately in the existing technology, achieving rigid linkage and deep coupling between the cutting and venting processes. By arranging the pre-pressure locking component, disc blade, and synchronous venting component along the feed direction, the sequence of actions of pre-pressure locking, precise cutting, and synchronous venting is strictly followed. This fundamentally solves the core pain point of mutual transmission of defects between the two processes in the existing technology. It not only prevents film displacement during cutting through pre-pressure locking, ensuring the accuracy of cutting dimensions, but also prevents air bubble defects caused by premature air closure through synchronous narrow-width roller venting after cutting. At the same time, it can achieve thorough venting without increasing the roller pressure, eliminating the stretching deformation and springback of the film caused by high-pressure roller pressing, and achieving simultaneous improvement in cutting dimension accuracy and assembly venting effect.

[0008] Preferably, the glass positioning support platform includes a panel and a base. The surface of the panel is provided with an array of negative pressure adsorption holes, and two baffles that are spliced ​​together to form a right-angle positioning edge are fixed at the edge of the panel.

[0009] In this invention, the glass is quickly and roughly positioned by the right-angle positioning edge of the baffle, and the glass is firmly fixed throughout the process by the array of negative pressure adsorption holes. This provides an absolutely stable benchmark for the simultaneous operation of cutting and venting, and eliminates cutting and venting deviations caused by glass displacement. At the same time, it can adapt to the processing needs of various types of glass, such as flat, single and double curved steel, irregular shapes, and ultra-thin / ultra-thick glass, and has a wide range of applications.

[0010] Preferably, a gantry frame is fixed to one side of the base, and a sliding frame is slidably fitted on the gantry frame. The machine head is slidably connected to the sliding frame. Two cylinders are fixed to the side of the sliding frame close to the panel. The telescopic ends of the cylinders are fixedly connected to the machine head and are used to drive the machine head closer to or away from the panel.

[0011] In this invention, the gantry and sliding frame provide a stable feed motion reference for the machine head, adapting to the cutting feed requirements of linear and irregular interpolation; the cylinder drives the machine head to move forward and backward as a whole, which can quickly adapt to glass and film of different thicknesses, ensuring the consistency of the reference for cutting and pressing actions. The structure is simple and the adjustment is convenient.

[0012] Preferably, the preload locking assembly includes a swing arm and a return spring. The swing arm is rotatably connected to the inner wall of the machine head via a rotating shaft. The return spring is sleeved on the rotating shaft. Both ends of the return spring are fixedly connected to the swing arm and the machine head, respectively. One end of the swing arm is in contact with the contour surface of the preload cam, and the other end of the swing arm is fixedly connected to the preload pressure head.

[0013] In this invention, the swing arm is driven to swing around the rotation axis by the contour change of the pre-pressure cam, so as to realize the intermittent pressing and lifting of the pre-pressure head. With the help of the return spring, the swing arm is made to fit the contour surface of the pre-pressure cam without gap throughout the entire process, so as to ensure that the timing of the pre-pressure action is completely synchronized with the spindle rotation and cutting action, without any electrical control synchronization error. The structure is simple, the action is stable and reliable, and the film pre-pressure locking before cutting can be achieved without the need to add an additional independent drive mechanism.

[0014] Preferably, the highest point of the preload cam and the highest point of the exhaust cam are installed at an angle of 30° to 45° in the circumferential direction of the main shaft.

[0015] In this invention, by limiting the installation angle of the two cams, the rigid action sequence of "pre-press head locking → disc blade cutting → exhaust roller pressing down to exhaust" is strictly locked, ensuring that the exhaust operation is immediately followed after the cutting action is completed. This avoids premature air closure of the film caused by premature exhaust, and also avoids air intake of the film caused by delayed exhaust. Structurally, this ensures the timing matching accuracy of the two processes.

[0016] Preferably, the synchronous exhaust assembly includes a rotating plate and a traction spring. An arc-shaped groove is provided inside the machine head, and the axis of the arc-shaped groove coincides with the axis of the main shaft. The rotating plate is slidably connected in the arc-shaped groove. The two ends of the traction spring are fixedly connected to the rotating plate and the inner wall of the arc-shaped groove, respectively. One end of the rotating plate is in contact with the contour surface of the exhaust cam. The exhaust roller is rotatably connected to the rotating plate.

[0017] In this invention, the rotating plate is driven to swing along the arc groove by the contour change of the exhaust cam, so as to realize the intermittent pressing and lifting of the exhaust roller. With the help of the traction spring, the rotating plate is ensured to fit the contour surface of the exhaust cam without gap throughout the entire process, so as to ensure that the exhaust action is completely synchronized with the rotation and cutting action of the main shaft. At the same time, the design of the arc groove and the main shaft being coaxial ensures that the center distance between the exhaust roller and the main shaft remains constant during the swing of the rotating plate, providing a structural basis for the stable synchronous transmission of the exhaust roller and the main shaft.

[0018] Preferably, toothed pulleys are fixed on both the main shaft and the exhaust roller, and the two toothed pulleys are connected by an internal toothed belt drive.

[0019] In this invention, the rigid synchronous rotation of the exhaust roller and the main shaft is achieved through the synchronous meshing transmission of the internal toothed belt and the toothed pulley, ensuring that the rotational speed of the exhaust roller matches the feed speed of the machine head in a 1:1 ratio. The exhaust roller and the rubber film are in pure rolling contact, without slippage or dragging problems. This avoids the rubber film being stretched and deformed, and ensures that the exhaust effect is uniform and stable, completely solving the defects of passive exhaust rollers that are prone to slippage and timing inaccuracy.

[0020] Preferably, a rear edge sealing head is fixed at the lower end of the rotating plate, and the sealing head is located at the rear end of the exhaust roller in the feeding direction.

[0021] In this invention, the rear edge sealing head and the exhaust roller operate synchronously. After the exhaust roller completes the exhaust operation in the corresponding area, the cut glass edge is immediately pre-sealed with constant pressure to prevent air from re-entering the bonding interface between the glass and the adhesive film, thereby further enhancing the exhaust effect. At the same time, there is no need to add an independent drive mechanism, and the action sequence is completely rigidly bound to the exhaust roller, resulting in a simplified structure.

[0022] Compared with the prior art, the advantages of the present invention include: (1) The present invention adopts an integrated architecture of single spindle synchronous drive cutting, pre-pressure locking and exhaust actuator, which integrates the two independent processes of film cutting and pre-pressure exhaust in the prior art into a single synchronous operation, avoiding the mutual transmission of defects generated during the independent optimization of the two processes, and solving the technical problem that the prior art cannot simultaneously improve the cutting size accuracy and the venting effect of the film assembly. While stabilizing the cutting accuracy, it simultaneously reduces the bubble defect rate at the film assembly interface.

[0023] (2) The present invention adopts a narrow-width intermittent roller pressing and venting structure that is synchronized with the cutting action. Only the narrow edge area after cutting is pressed, so that the bonding interface between the glass and the film always maintains an open venting channel. The interface air can be effectively discharged without increasing the roller pressing pressure. This avoids the irreversible stretching deformation and later rebound of the PVB film caused by high pressure and long path roller pressing in the prior art, and reduces the defect rate of film edge size deviation and uneven glue overflow.

[0024] (3) The present invention uses a pre-pressure locking structure controlled by a coaxial cam to perform follow-up local pre-pressure fixing on a very small segment of the film at the front end of the cutting station. This not only avoids the film from shifting due to the traction of the cutting tool during the cutting process, ensuring the stability of the cutting size, but also prevents the formation of a fully enclosed interface boundary before lamination. This solves the technical contradiction in the prior art where pre-pressure positioning and exhaust flow cannot be balanced, and structurally eliminates the risk of air tightness during lamination.

[0025] (4) The present invention uses a power architecture that drives a single spindle with a single servo motor, and with the coaxially mounted preload cam and exhaust cam, it locks the action sequence of preload locking, precise cutting and synchronous exhaust from the mechanical structure. It eliminates the need for multiple independent drive systems and electronic control synchronization matching links, thus eliminating the timing error caused by the synchronization of multiple electronic control systems and improving the stability and batch consistency of the device operation. At the same time, it simplifies the structural composition of the device and reduces the manufacturing cost and subsequent maintenance cost of the equipment.

[0026] (5) The present invention integrates cutting, pre-pressing and venting functions into a single machine head, which can be directly adapted to the standard layout of existing laminated glass production lines without the need for large-scale modification of existing production lines. By adjusting the feed trajectory of the machine head, it can adapt to the processing needs of various specifications of glass such as flat, curved and irregular shapes. Product change can be completed without changing tooling, which improves the flexible production capacity and overall production efficiency of the production line. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or 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 only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is an overall schematic diagram of an assembly device for laminated glass production according to the present invention; Figure 2 This is a schematic diagram of the glass positioning support platform in this invention; Figure 3 This is a schematic diagram of the machine head structure in this invention; Figure 4 This is an exploded view of the structure of the machine head in this invention; Figure 5 This is a schematic diagram of the pre-pressure locking assembly in this invention; Figure 6 This is a schematic diagram of the preload cam in this invention; Figure 7 This is a schematic diagram of the synchronous exhaust assembly in this invention.

[0029] Figure label: 1. Glass positioning support platform; 11. Panel; 12. Base; 13. Gantry frame; 14. Sliding frame; 15. Cylinder; 16. Stop bar; 17. Negative pressure adsorption hole; 2. Machine head; 3. Servo motor; 4. Pre-pressure locking assembly; 41. Swing arm; 42. Return spring; 43. Pre-pressure head; 44. Pre-pressure cam; 5. Disc blade; 6. Synchronous exhaust assembly; 61. Exhaust roller; 62. Toothed pulley; 63. Internal toothed belt; 64. Rotary plate; 65. Exhaust cam; 66. Arc-shaped guide rod; 67. Limit head; 7. Main shaft. Detailed Implementation

[0030] In view of the shortcomings of the prior art, the inventors of this invention, through long-term research and extensive practice, have proposed the technical solution of this invention. The technical solution, its implementation process, and principles will be further explained below with reference to the accompanying drawings and specific implementation examples in the embodiments of this application.

[0031] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. The described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, the present invention covers any substitutions, modifications, equivalent methods and solutions made on the spirit, principles and scope of the present invention as defined by the claims. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this application, the terms "first," "second," "third," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," and similar words, do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including," and similar words, mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. The terms "connected" or "linked," and similar words, are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0033] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, 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. Therefore, they should not be construed as limitations on this application. Furthermore, when using positional terms such as "both sides," "outer side," and "upper and lower," it should be understood that they are used only for ease of understanding and description, taking into account that the structure may be oriented to other positions.

[0034] In the description of this application, unless otherwise expressly specified and limited, the technical or scientific terms used shall have the ordinary meaning understood by a person with ordinary skills in the art to which this application pertains. Terms such as “installation,” “connection,” and “joining” shall be interpreted broadly, for example, as fixed connection, detachable connection, mating connection, or integral connection. For a person skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0035] The present invention aims to introduce and explain the structural composition of an assembly device for laminated glass production and the cooperation relationship between the various components. Unless otherwise specified, the dimensions, materials, and manufacturing processes of the various components in the assembly device for laminated glass production in the present invention can be selected according to specific circumstances, and no special limitations or explanations are made here.

[0036] Furthermore, to provide the public with a better understanding of the present invention, certain specific details are described in detail in the following description of the invention. However, those skilled in the art will fully understand the invention even without these detailed descriptions. Example

[0037] Please see Figure 1 and Figure 2 This embodiment discloses an assembly device for laminated glass production, including a glass positioning support platform 1. It is used to support and fix the lower glass layer and the laid PVB film throughout the entire process, ensuring no micro-displacement during a single clamping operation.

[0038] Specifically, the glass positioning support platform 1 includes a panel 11 and a base 12 fixed to the bottom of the panel 11. The surface of the panel 11 has an array of negative pressure adsorption holes 17, and a sealing strip is provided. It can adapt to flat / single / double curved steel, irregular shapes, and ultra-thin / ultra-thick glass, providing an absolutely stable benchmark for simultaneous dual processes and eliminating cutting and venting deviations caused by glass displacement. By connecting multiple negative pressure adsorption holes 17 to the same vacuum pump, the air inside the negative pressure adsorption holes 17 can be evacuated to form suction, thereby achieving the purpose of positioning the lower glass layer.

[0039] Furthermore, two baffles 16 are fixedly connected to the edge of the glass positioning support platform 1. The two baffles 16 are spliced ​​together to form a right angle. After the glass is placed on it, it is pressed against these two baffles 16, which just abut against the short left side and the long back side of the glass, locking one right angle of the glass. The glass will not be tilted forward, backward, left, or right, and will not move. The position is fixed at once. A gantry frame 13 is fixedly connected to one side of the base 12. A sliding frame 14 is slidably connected inside the gantry frame 13. The crossbeam of the gantry frame 13 extends along the long side of the panel 11. The linear guide rail can be a conventional linear guide structure in the art, such as a linear ball guide rail or a roller linear guide rail. The sliding frame 14 slides with the crossbeam through the linear guide rail, providing high-precision guidance for the movement of the machine head 2. The feed drive mechanism can be a conventional feed transmission structure in the art, such as a ball screw drive mechanism or a synchronous belt linear drive mechanism. Its power output end is fixedly connected to the sliding frame 14, which is used to drive the sliding frame 14 to feed at a constant speed along the cutting edge extension direction. The specific installation and matching methods of the above structures are well known to those skilled in the art and will not be described in detail here. The sliding frame 14 is slidably connected to the gantry frame 13 through the linear guide rail, and can make linear or irregular interpolation feed movements along the long side of the panel 11, providing a stable travel reference for the machine head 2.

[0040] Please see Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 This embodiment discloses an assembly device for laminated glass production, including a machine head 2, which integrates cutting and venting functions.

[0041] Specifically, the machine head 2 is slidably connected to the sliding frame 14. A servo motor 3 is fixedly connected to one side of the machine head 2, and a main shaft 7 is rotatably connected inside the machine head 2. The drive end of the servo motor 3 is fixedly connected to the main shaft 7. Two cylinders 15 are fixedly connected to the front of the sliding frame 14 close to the panel 11. The extension and retraction ends of the two cylinders 15 are fixedly connected to the machine head 2. The cylinders 15 are used to drive the machine head 2 to complete the forward and backward movement of approaching or moving away from the panel 11, adapting to glass and film of different thicknesses, and ensuring the consistency of the cutting and pressing action.

[0042] Furthermore, a pre-pressure locking component 4 is installed inside the machine head 2. The pre-pressure locking assembly 4 includes a swing arm 41, with a rotating shaft fixedly connected to the middle of the swing arm 41. The rotating shaft is rotatably connected to the inner wall of the machine head 2, so that the swing arm 41 forms a lever structure with the central rotating shaft as the fulcrum. A return spring 42 is sleeved on the rotating shaft. The return spring 42 is a torsion spring. One end of the return spring 42 is fixedly connected to the swing arm 41, and the other end is fixedly connected to the inner wall of the machine head 2. The pre-tightening torsion direction of the return spring 42 always drives one end of the swing arm 41 to fit against the contour surface of the pre-pressure cam 44, ensuring that there is no gap and no timing deviation throughout the entire operation. The pre-pressure cam 44 is fixedly connected to the main shaft 7. The upper end of the swing arm 41 is always in contact with the contour surface of the pre-pressure cam 44. The lower end of the swing arm 41 is fixedly connected to the pre-pressure head 43. The pre-pressure head 43 is a horizontally arranged rubber pressure block. It is soft and will not damage the film and glass. Its length can completely cover the pressing width of the glass edge. The machine head 2 has a rotating groove with sufficient movement for the pre-pressure cam 44 and the swing arm 41.

[0043] The pre-pressing head 43 is located at the front end of the travel direction of the disc blade 5, and the horizontal distance between it and the disc blade 5 is fixed with no relative displacement. The highest point of the lift of the pre-pressing cam 44 and the lowest point of the cutting of the disc blade 5 are set with a fixed advance angle in the circumferential direction of the main shaft 7. This ensures that during the rotation of the main shaft 7, the swing arm 41 first drives the pre-pressing head 43 to complete the downward pressing and locking, and after the corresponding film and glass are completely pressed and fixed, the disc blade 5 then cuts the locked film. This fundamentally avoids the film from shifting due to the pull of the tool during the cutting process, ensuring the cutting dimension accuracy.

[0044] Furthermore, a high-precision cutting blade assembly is provided inside the machine head 2. The high-precision cutting blade assembly includes a disc blade 5, which is fixedly connected to the main shaft 7. A cutting groove is provided inside the machine head 2 for the disc blade 5 to rotate.

[0045] It should be added that the pre-pressure head 43 is located at the front end of the travel direction of the disc blade 5, and the horizontal distance between it and the disc blade 5 is fixed, with no relative displacement; the highest point of the lift of the pre-pressure cam 44 and the lowest point of the cutting of the disc blade 5 are set with a fixed advance angle in the circumferential direction of the spindle 7, so as to ensure that during the rotation of the spindle 7, the pre-pressure head 43 presses down and locks the corresponding position of the film and glass before the disc blade 5, providing a displacement-free reference for cutting; the return spring 42 is used to drive the swing arm 41 to automatically return after the lift segment of the pre-pressure cam 44 ends, so that the pre-pressure head 43 is lifted synchronously, and the pre-pressure action is continuously and cyclically performed with the feed of the head 2.

[0046] Furthermore, a synchronous exhaust assembly 6 is provided inside the machine head 2. The synchronous exhaust assembly 6 includes an arc-shaped groove opened inside the machine head 2. The axis of the arc-shaped groove is the same as the axis of the main shaft 7. A rotating plate 64 is slidably connected inside the arc-shaped groove. A guide port is opened through the inside of the rotating plate 64. An arc-shaped guide rod 66 is inserted into the guide port. One end of the arc-shaped guide rod 66 is fixedly connected to the machine head 2. The other end of the arc-shaped guide rod 66 is fixedly connected to a limiting head 67. The outer diameter of the limiting head 67 is larger than the inner diameter of the guide port. It is used to limit the maximum swing stroke of the rotating plate 64 and prevent the rotating plate 64 from falling out of the arc-shaped groove.

[0047] A traction spring is fixedly connected to one side of the rotating plate 64. One end of the traction spring is fixedly connected to the side wall of the arc-shaped groove. The traction spring is used to keep the rotating plate 64 in its original position when it is not pulled by external force. An exhaust cam 65 is fixedly connected to the main shaft 7. There is an angle of 30 degrees to 45 degrees between the exhaust cam 65 and the preload cam 44. This angle is the installation angle between the highest point of the preload cam 44 and the highest point of the exhaust cam 65 in the circumferential direction of the main shaft 7. The lowest point of the cutting of the disc blade 5 is taken as the circumferential reference 0 point. The highest point of the preload cam 44 is set ahead of the reference 0 point, and the highest point of the exhaust cam 65 is set behind the reference 0 point. This ensures that during the rotation of the main shaft 7, the rigid timing sequence of "preload pressure head 43 locks → disc blade 5 cuts → exhaust roller 61 presses down to exhaust" is strictly followed, with no electronic control synchronization error and no conflict in the action cycle.

[0048] The rotating plate 64 is provided with a contact end for contacting the exhaust cam 65. An exhaust roller 61 is rotatably connected to the rotating plate 64. One end of the exhaust roller 61 extends to the outside of the machine head 2 along the groove of the arc-shaped groove. The exhaust roller 61 is a narrow and long thin roller that only presses the narrow strip inward from the glass cutting edge. This narrow structure only presses the narrow strip area of ​​the cutting edge and does not press the film of the uncut area in advance, ensuring that the bonding interface between the glass and the film always maintains an open exhaust channel. This completely solves the problem of air trap caused by premature full-width pressing in the prior art. It can achieve complete exhaust without increasing the pressing pressure, avoiding the film from being stretched and deformed and springing due to high pressure roller pressing, and ensuring the long-term stability of the cutting size. Toothed pulleys 62 are fixedly connected to the main shaft 7 and the exhaust roller 61. The two toothed pulleys 62 are provided with internal toothed belts 63, and the two toothed pulleys 62 are connected by a transmission through an internal toothed belt 63.

[0049] The internal toothed belt 63 is a synchronous meshing transmission belt, which is fully meshed with the teeth of the two toothed pulleys 62 without relative slippage; the axis of the arc groove coincides with the axis of the main shaft 7, so that during the swing of the rotating plate 64 around the axis of the main shaft 7, the center distance of the two toothed pulleys 62 remains constant, and the internal toothed belt 63 is in a stable tension state throughout the entire process, without the risk of loosening or skipping teeth, ensuring that the speed of the exhaust roller 61 is always rigidly synchronized with the speed of the main shaft 7, and matched with the feed speed of the machine head 2 in a 1:1 ratio.

[0050] Furthermore, the synchronous exhaust assembly 6 is also equipped with a rear edge sealing head. The rear edge sealing head is a constant pressure rubber block, and its metal mounting base is directly fixed to the lower end of the rotating plate 64. The entire head is located on the rear side of the exhaust roller 61 along the feed direction of the machine head 2, and its relative position with the exhaust roller 61 is fixed and there is no independent drive structure. While the rotating plate 64 swings around the axis of the main shaft 7 and drives the exhaust roller 61 to press down to exhaust air, the sealing head fixed on the rotating plate 64 simultaneously completes the pressing action. After the exhaust roller 61 rolls over the corresponding cutting area, the sealing head immediately completes constant pressure sealing on the cut glass edge to prevent air from re-entering the bonding interface between the glass and the adhesive film. Its pressing and lifting action sequence is completely rigidly bound to the exhaust roller 61.

[0051] This device is a pre-processing step in the laminated glass assembly process. The substrate handled throughout the process consists of a lower layer of supporting glass and a roll of PVB film laid flat on its surface. The core technology involves precisely cutting the film, simultaneously venting and pre-sealing the cut edges before assembling the upper glass layer. This completely solves the industry-wide problems of conventional processes such as "pre-pressurization and air sealing, cutting displacement, and residual air bubbles after assembly." After the cutting and venting are completed, the upper glass layer is then assembled, fully conforming to the standardized production logic of laminated glass. The complete workflow is as follows: Step 1: Clamping and positioning. Place the lower glass to be processed on the panel 11, and position the right-angled edge of the glass against the two baffles 16. Start the negative pressure adsorption system and firmly fix the lower glass to the panel 11 through the negative pressure adsorption holes 17. Then, lay the entire roll of PVB film flat on the upper surface of the lower glass to complete the clamping of the substrate to be processed. Step 2: Feed alignment. The cylinder 15 drives the machine head 2 to move to the working height that matches the total thickness of the lower glass and the film. The feed drive mechanism on the gantry 13 drives the sliding frame 14 and the machine head 2 to move to the starting position of the glass cutting edge, thus completing the processing alignment. Step 3: Linked Cutting-Exhaust Operation. Start servo motor 3, which drives spindle 7 to rotate continuously. At the same time, slide frame 14 drives machine head 2 to feed at a constant speed along the glass cutting edge. During the rotation of spindle 7, preload cam 44, disc blade 5, and exhaust cam 65 rotate synchronously, completing the rigid linkage operation of the entire process. First, the lifting section of the pre-pressure cam 44 pushes the swing arm 41 to swing around the central rotating shaft, causing the pre-pressure head 43 to press down in advance, so as to completely press and lock the PVB film at the cutting position of the disc blade 5 with the lower glass. Subsequently, the disc blade 5 rotates to the lowest cutting point to precisely cut the locked PVB film, removing the excess material edge of the film that extends beyond the glass edge. The cutting process is free of film displacement and wrinkles. Immediately afterwards, the lift section of the exhaust cam 65 pushes the rotating plate 64 to swing along the arc groove, driving the exhaust roller 61 to press down synchronously. The main shaft 7 drives the exhaust roller 61 to rotate synchronously with the main shaft 7 through the toothed pulley 62 and the internal toothed belt 63, synchronously rolling and venting the edge area that has just been cut. The film in the uncut area always remains open, and the air in the interface between the glass and the film can be discharged without obstruction, eliminating the air trap defect of conventional processes from the root. As the exhaust roller 61 presses down, the rear sealing pressure head fixed at the lower end of the rotating plate 64 presses down synchronously. After the exhaust roller 61 rolls over the corresponding cutting area, it immediately performs a constant pressure pre-seal on the cut glass edge to prevent air from re-entering the bonding interface between the glass and the adhesive film. The timing of its pressing and lifting actions is completely rigidly bound to the exhaust roller 61. Finally, the preload cam 44 and the exhaust cam 65 enter the return section simultaneously. The reset spring 42 drives the swing arm 41 and the preload head 43 to lift simultaneously. The traction spring drives the rotating plate 64, the exhaust roller 61, and the sealing head to lift simultaneously. The machine head 2 is fed to the next processing position. The above cycle is repeated until the processing of the entire cutting edge is completed. Step 4: Processing is completed. Servo motor 3 stops running. Sliding frame 14 drives machine head 2 back to the initial position. Cylinder 15 drives machine head 2 back to the standby position. The negative pressure adsorption system is turned off. The lower glass assembly with completed film cutting, edge venting and pre-sealing is removed and the subsequent upper glass assembly process begins.

[0052] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It should not be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An assembly apparatus for laminated glass production, characterized in that, The device includes a glass positioning support platform (1) for supporting and fixing the lower glass and the PVB film, and a machine head (2) capable of feeding along the glass cutting edge, characterized in that: A main shaft (7) is rotatably installed inside the machine head (2), and a servo motor (3) is fixed on the side wall of the machine head (2). The drive end of the servo motor (3) is fixedly connected to the main shaft (7). The main shaft (7) is coaxially fixed with a disc blade (5) for cutting the film, a pre-compression cam (44) for driving the pre-compression action, and an exhaust cam (65) for driving the exhaust action. The machine head (2) is provided with a pre-pressure locking assembly (4) that works in conjunction with the pre-pressure cam (44). The pre-pressure head (43) of the pre-pressure locking assembly (4) is located at the front end of the feed direction of the disc blade (5). The head (2) is equipped with a synchronous exhaust assembly (6) that works in conjunction with the exhaust cam (65). The exhaust roller (61) of the synchronous exhaust assembly (6) is located at the rear end of the feed direction of the disc blade (5). The exhaust roller (61) is connected to the main shaft (7) for transmission, so as to achieve synchronous rotation with the main shaft (7).

2. The assembly apparatus for laminated glass production according to claim 1, characterized in that, The glass positioning support platform (1) includes a panel (11) and a base (12). The surface of the panel (11) is provided with an array of negative pressure adsorption holes (17). Two baffles (16) are fixed at the edge of the panel (11) to form a right-angle positioning edge.

3. The assembly apparatus for laminated glass production according to claim 2, characterized in that, A gantry frame (13) is fixed on one side of the base (12). A sliding frame (14) is slidably fitted on the gantry frame (13). The machine head (2) is slidably connected to the sliding frame (14). Two cylinders (15) are fixed on the side of the sliding frame (14) close to the panel (11). The telescopic end of the cylinder (15) is fixedly connected to the machine head (2) to drive the machine head (2) to move closer to or away from the panel (11).

4. The assembly apparatus for laminated glass production according to claim 1, characterized in that, The preload locking assembly (4) includes a swing arm (41) and a return spring (42). The swing arm (41) is rotatably connected to the inner wall of the machine head (2) through a rotating shaft. The return spring (42) is sleeved on the rotating shaft. The two ends of the return spring (42) are fixedly connected to the swing arm (41) and the machine head (2) respectively. One end of the swing arm (41) is in contact with the contour surface of the preload cam (44), and the other end of the swing arm (41) is fixedly connected to the preload pressure head (43).

5. The assembly apparatus for laminated glass production according to claim 1, characterized in that, The highest point of the preload cam (44) and the highest point of the exhaust cam (65) are installed at an angle of 30° to 45° in the circumferential direction of the main shaft (7).

6. The assembly apparatus for laminated glass production according to claim 1, characterized in that, The synchronous exhaust assembly (6) includes a rotating plate (64) and a traction spring. An arc-shaped groove is provided in the head (2). The axis of the arc-shaped groove coincides with the axis of the main shaft (7). The rotating plate (64) is slidably connected in the arc-shaped groove. The two ends of the traction spring are fixedly connected to the rotating plate (64) and the inner wall of the arc-shaped groove, respectively. One end of the rotating plate (64) is in contact with the contour surface of the exhaust cam (65). The exhaust roller (61) is rotatably connected to the rotating plate (64).

7. The assembly apparatus for laminated glass production according to claim 6, characterized in that, Both the main shaft (7) and the exhaust roller (61) are fixed with toothed pulleys (62), and the two toothed pulleys (62) are connected by an internal toothed belt (63).

8. An assembly apparatus for laminated glass production according to claim 6, characterized in that, The lower end of the rotating plate (64) is fixed with a rear edge sealing head, which is located at the rear end of the exhaust roller (61) in the feeding direction.

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