A laser edge banding machine bonding mechanism

Abstract

A bonding mechanism for a laser edge banding machine, relating to the field of edge banding machine technology, includes a thickened sleeve, a swing wheel rotating shaft rotatably connected inside the thickened sleeve, a rotating main shaft rotatably connected inside the swing wheel rotating shaft, a swing wheel connecting plate connected to the upper end of the swing wheel rotating shaft, a swing wheel auxiliary shaft connected to the swing wheel connecting plate, a first synchronous pulley fixedly connected to the outside of the rotating main shaft, and a second synchronous pulley rotatably connected to the outside of the swing wheel auxiliary shaft, the first synchronous pulley and the second synchronous pulley being driven by a synchronous belt.

Description

Technical Field

[0001] This utility model relates to the field of edge banding machine technology, and more specifically, to a bonding mechanism for a laser edge banding machine. Background Technology

[0002] In the field of edge banding machine technology, especially in the application of laser edge banding machines, the precise and stable bonding of the board material and the edge banding tape is a crucial step in ensuring edge banding quality. Traditional laser edge banding machines typically have only one bonding roller for the edge banding tape. In actual operation, this single bonding roller design has revealed numerous problems.

[0003] First, the contact area between a single laminating wheel and the board is limited. During laser edge banding, the board and the laminating wheel must maintain a strictly synchronized speed to ensure the edge banding tape adheres evenly and smoothly to the board edge. However, due to the small contact area, the friction between the board and the laminating wheel is insufficient, making it difficult to achieve the ideal synchronized speed. This can lead to relative slippage between the board and the edge banding tape during the edge banding process, resulting in weak and uneven adhesion, gaps, wrinkles, and other defects. This severely affects the edge banding quality and reduces the product's aesthetics and durability.

[0004] Secondly, a single bonding roller has a relatively small pressing area between the board and the edge banding tape. In edge banding operations, a sufficient pressing area is crucial for ensuring a tight bond between the edge banding tape and the board. A small pressing area cannot provide adequate and uniform pressure, resulting in insufficient adhesion between the edge banding tape and the board. This can easily lead to problems such as delamination and detachment during use, failing to meet the requirements of high-quality edge banding. Utility Model Content

[0005] The purpose of this utility model is to solve the problems mentioned in the background art above, and then to propose a laser edge sealing machine bonding mechanism.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A laser edge-sealing machine bonding mechanism includes a thickened sleeve, a swing wheel rotating shaft rotatably connected inside the thickened sleeve, a rotating main shaft rotatably connected inside the swing wheel rotating shaft, a swing wheel connecting plate fixedly connected to the upper end of the swing wheel rotating shaft after passing through a table, a swing wheel auxiliary shaft fixedly connected to the swing wheel connecting plate, an eccentric shaft sleeve installed on the outside of the swing wheel auxiliary shaft, a first synchronous pulley fixedly connected to the outside of the rotating main shaft, and a second synchronous pulley rotatably connected to the outside of the eccentric shaft sleeve. The first synchronous pulley and the second synchronous pulley are driven by a synchronous belt.

[0008] Furthermore, a transmission sprocket is mounted at the bottom of the rotating spindle, and the rotation of the transmission sprocket can drive the synchronous belt drive.

[0009] Furthermore, the inner wall of the edge banding machine is equipped with a drive motor, and the output shaft of the drive motor is connected to a drive sprocket. The drive sprocket and the transmission sprocket are connected by a first chain.

[0010] Furthermore, a first sprocket is mounted on the outside of the balance wheel rotation shaft, and the rotation of the first sprocket can drive the balance wheel connecting plate to rotate.

[0011] Furthermore, a fixed shaft is provided at the bottom of the platform, and a second sprocket is rotatably connected to the fixed shaft. The first sprocket and the second sprocket are driven by a second chain. A cylinder is rotatably connected to the bottom of the platform, and the telescopic rod of the cylinder is rotatably connected to a fixed block. The fixed block is engaged with the second chain.

[0012] Furthermore, an optical axis is fixedly provided on the top of the balance wheel auxiliary shaft, and a sealing strip height limiting sleeve is slidably fitted on the optical axis. A support plate is fixedly connected to the top of the optical axis, and a position display is installed on the support plate. The handwheel lifting shaft of the position display is threadedly connected to the threaded hole of the sealing strip height limiting sleeve, and a handwheel is installed on the top of the handwheel lifting shaft. The upper end of the rotating main shaft is rotatably connected to the support plate.

[0013] Furthermore, when the edge sealing strip height limiting sleeve moves vertically along the optical axis and overlaps with the synchronous belt, the synchronous belt is within the internal space of the edge sealing strip height limiting sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model uses a structure that connects the first and second synchronous belt pulleys via a synchronous belt drive. Compared with traditional bonding wheels, it significantly increases the contact area, allowing the sheet material and the synchronous belt to move at the same speed, thereby improving the pressing area and bonding quality. It also has the advantage of increasing the bonding strength between the edge banding tape and the sheet material. Attached Figure Description

[0016] Fig. 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Fig. 2 This is a three-dimensional structural diagram of the present invention after removing the edge banding height limit sleeve;

[0018] Fig. 3 A sectional view with the central axis of rotation as the center;

[0019] Of which: 100 edge banding machines, 101 worktables.

[0020] 1. Thickened sleeve,

[0021] 2. Balance wheel rotation axis; 21. First sprocket; 22. Balance wheel connecting plate; 221. Balance wheel auxiliary shaft; 23. Optical shaft; 24. Support plate; 25. Eccentric shaft sleeve.

[0022] 3. Rotary spindle, 31. Transmission sprocket,

[0023] 41 Position indicator, 42 Handwheel, 43 Handwheel lifting shaft.

[0024] 5. Height limit sleeve with edge sealing strip.

[0025] 61 First timing pulley, 62 Second timing pulley, 63 Timing belt,

[0026] 71 Drive motor, 72 Drive sprocket, 73 First chain, 74 Fixed shaft, 75 Second sprocket, 76 Second chain, 77 Cylinder, 78 Fixed block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0028] In existing technologies, laser edge banding machines typically employ a single bonding wheel structure, resulting in a limited contact area between the board and the bonding wheel, and insufficient friction to achieve strictly uniform speed. Traditional structures have a small pressing area, leading to a loose bond between the edge banding tape and the board, which can easily cause slippage, wrinkles, or delamination, affecting edge banding quality. These defects are particularly pronounced in high-speed edge banding operations, making it difficult to meet the demands of high-precision processing.

[0029] To address the aforementioned issues, a technical solution is needed that can increase the contact area and improve the uniformity of pressing. Analysis revealed that synchronous belt drives offer advantages such as a large contact area and good synchronization; however, integrating them into the rotating mechanism of a laser edge banding machine presents technical challenges. After repeated experiments, a dual-axis nested structure was ultimately determined, achieving full contact between the synchronous belt and the sheet material while maintaining the rotational accuracy of the balance wheel assembly.

[0030] like Figs. 1-3As shown, a laser edge banding machine bonding mechanism is installed on the table 101 of the edge banding machine 100 to achieve precise bonding of the edge banding strip. It includes a thickened sleeve 1, which is fixedly connected to the bottom of the table, providing support and rotation space for internal components. A swing wheel rotating shaft 2 is rotatably connected inside the thickened sleeve. The swing wheel rotating shaft is a hollow shaft, and a rotating main shaft 3 is rotatably connected inside the swing wheel rotating shaft. A swing wheel connecting plate 22 is fixedly connected to the upper end of the swing wheel rotating shaft after passing through the table. A swing wheel auxiliary shaft 221 is fixedly connected to the swing wheel connecting plate. An eccentric shaft sleeve 25 is installed on the outside of the swing wheel auxiliary shaft. A first synchronous pulley 61 is fixedly connected to the outside of the rotating main shaft, and a second synchronous pulley 62 is rotatably connected to the outside of the eccentric shaft sleeve. The first and second synchronous pulleys are driven by a synchronous belt 63.

[0031] In a more detailed version, the rotation of the main shaft can drive the synchronous belt transmission, which in turn allows the contact area of ​​the synchronous belt to be larger than that of a regular bonding wheel when the board and the edge banding are bonded. This results in a better effect of the board and the synchronous belt moving at the same speed, increasing the pressing area between the board and the edge banding, and thus improving the bonding effect.

[0032] The thickened sleeve refers to a tubular support structure with enhanced wall thickness, typically made of carbon steel, used to provide stable support for internal rotating components and limit radial offset. The balance wheel rotation shaft is a hollow shaft with an internal through hole, typically installed using bearings to achieve independent rotation from the main rotation shaft, ensuring that the power transmission between the two shafts does not interfere with each other. The synchronous belt drive is a transmission system composed of a toothed synchronous pulley and a toothed belt, typically made of polyurethane, which increases the contact area to improve the synchronicity of the plate feed. The balance wheel connecting plate is a transition plate connecting the balance wheel rotation shaft and auxiliary components, typically made of aluminum alloy or steel, used to maintain the relative positional accuracy of the balance wheel auxiliary shaft and the main rotation shaft. The eccentric bushing is a tubular part with a certain eccentric structure fitted outside the balance wheel auxiliary shaft, typically made of high-strength alloy material. Its eccentric characteristic allows for precise adjustment of the synchronous belt tension, ensuring that the synchronous belt maintains appropriate tension during transmission and guaranteeing stable operation of the transmission system.

[0033] Specifically, when the drive motor drives the rotating spindle to rotate via the sprocket and chain system, the first synchronous pulley drives the synchronous belt. The contact surface length between the synchronous belt and the sheet material is significantly longer than that of a traditional bonding wheel, forming surface contact at the same rotational speed. When the sheet material enters the processing area, the surface of the synchronous belt forms a large-area contact with the edge of the sheet material, and the nested structure of the rotating spindle and the swing wheel rotation axis achieves independent movement of two axes within a limited space.

[0034] Compared to existing technologies, traditional structures using a single contact wheel can only achieve point or line contact. This solution uses a timing belt to create surface contact, effectively improving friction and synchronization accuracy. Existing technologies often employ a single-layer rotating shaft structure; this application uses a double-layer nested shaft design, achieving power transmission while maintaining the rotational freedom of the balance wheel's axis. Existing adjustment mechanisms are complex; this solution uses a combination of a timing belt pulley and a balance wheel auxiliary shaft to achieve adaptive adjustment of the contact surface length.

[0035] Through the above technical solution, this application effectively increases the contact area between the board and the transmission components, eliminating relative slippage during the edge banding process. The uniform pressure distribution provided by the synchronous belt drive ensures full adhesion between the edge banding tape and the edge of the board, avoiding wrinkles and delamination defects.

[0036] In at least one embodiment, a transmission sprocket 31 is mounted at the bottom of the rotating spindle. The rotation of the transmission sprocket can drive the synchronous belt drive, thereby transmitting power to other related components to achieve the fitting action.

[0037] The transmission sprocket refers to the sprocket structure mounted at the bottom of the rotating main shaft. Specifically, it can be a steel sprocket with toothed grooves, whose tooth profile matches the chain pitch to achieve stable transmission. This sprocket transmits power to the synchronous belt drive system through the rotation of the main shaft. The synchronous belt drive refers to a transmission method where a synchronous belt connects two pulleys. Specifically, a rubber synchronous belt can be used in conjunction with toothed synchronous pulleys, achieving slip-free power transmission through toothed meshing. This structure converts the torque of the rotating main shaft into the linear motion of the synchronous belt.

[0038] Specifically, the transmission sprocket is mounted at the bottom of the rotating spindle. When the drive motor drives the transmission sprocket via a chain, the rotating spindle rotates. This rotational motion is transmitted to the timing belt via the first timing pulley, creating a closed-loop transmission with the cooperation of the second timing pulley. Because the contact area between the timing belt and the sheet material is much larger than that of a traditional bonding wheel, a surface contact rather than a line contact is formed between the sheet material and the timing belt, thereby increasing friction and eliminating speed differences.

[0039] In conjunction with this, the inner wall of the edge banding machine is equipped with a drive motor 71, the output shaft of which is connected to a drive sprocket 72. The drive sprocket and the transmission sprocket are driven and connected through a first chain 73 to provide a power source for the rotating main shaft.

[0040] The drive motor is the power source that provides power to the rotating spindle. It can be a servo motor or a stepper motor, and the power output is precisely adjusted by controlling the motor's speed and direction. The drive sprocket is a sprocket structure fixedly connected to the output shaft of the drive motor. It can be a steel sprocket with keyways and is used to transmit the motor's rotational power to the chain. The first chain is the transmission component connecting the drive sprocket and the drive sprocket. It can be a double-row roller chain and is used to transmit the drive motor's power to the rotating spindle.

[0041] In at least one embodiment, a first sprocket 21 is mounted on the outside of the balance wheel rotation shaft. The rotation of the first sprocket can drive the balance wheel connecting plate to rotate, thereby adjusting the position of the balance wheel auxiliary shaft and related components to meet different fitting requirements.

[0042] The first sprocket is a transmission component mounted on the outside of the balance wheel's rotation axis. It can be implemented using a toothed metal disc structure, which transmits power through the meshing of the teeth with the chain, thus converting rotational motion into the rotational motion of the balance wheel connecting plate. The balance wheel connecting plate is a plate-like structure fixed to the upper end of the balance wheel's rotation axis. It can be made of aluminum alloy or steel and is used to fix the balance wheel's auxiliary shaft and bear its rotational motion. Angle adjustment is achieved through the drive of the first sprocket.

[0043] Specifically, the first sprocket is fixedly connected to the balance wheel's rotation axis. When an external power drives the first sprocket to rotate, the balance wheel's rotation axis rotates accordingly, thereby causing the balance wheel connecting plate to rotate around its axis. The balance wheel auxiliary shaft is fixed to the balance wheel connecting plate, and its position changes synchronously with the rotation of the balance wheel connecting plate, thus adjusting the orientation of the balance wheel auxiliary shaft relative to the plate. For example, when bonding edge banding tapes of different sizes or shapes, the angle of the balance wheel auxiliary shaft can be adjusted by rotating the first sprocket to maintain the optimal bonding angle with the edge of the plate.

[0044] Correspondingly, a fixed shaft 74 is provided at the bottom of the platform, and a second sprocket 75 is rotatably connected to the fixed shaft. The first sprocket and the second sprocket are driven together by a second chain 76. A cylinder 77 is rotatably connected to the bottom of the platform, and the extension rod of the cylinder is rotatably connected to a fixed block 78, which is engaged with the second chain. The extension and retraction of the cylinder can drive the rotation of the balance wheel connecting plate, thereby adjusting the rotation angle of the balance wheel connecting plate.

[0045] The fixed shaft refers to a support structure perpendicular to the bottom of the platform, specifically a cylindrical metal rod fixed below the platform, used to support the rotation of the second sprocket. The second sprocket is a toothed sprocket structure that forms a transmission connection with the first sprocket via a second chain, used to transmit power to drive the rotation of the balance wheel connecting plate. The second chain is an annular transmission belt with hinged links, specifically a metal chain, used to synchronize the rotation of the first and second sprockets. The cylinder is a linear actuator driven by air pressure, specifically a single-acting or double-acting cylinder, whose linear motion of the telescopic rod is converted into displacement of the fixed block. The fixed block is a rigid connecting piece with a groove, specifically a metal block or engineering plastic part, which is engaged in the gaps between the links of the second chain, and the extension and retraction of the cylinder drives the partial movement of the second chain.

[0046] Specifically, when the cylinder's telescopic rod extends or retracts, the fixed block shifts along with the linear movement of the rod, causing the second chain to move partially between the first and second sprockets. Since the second chain meshes with the first sprocket, the chain's movement drives the first sprocket to rotate, thereby causing the balance wheel's rotation axis and the balance wheel connecting plate to rotate around its axis. By controlling the cylinder's extension or retraction, the rotation angle of the balance wheel connecting plate can be precisely adjusted, thus changing the position of the balance wheel's auxiliary shaft to adapt to different edge-sealing thicknesses or sheet material shapes.

[0047] In at least one embodiment, an optical axis 23 is fixedly provided on the top of the swing wheel auxiliary shaft, and a sealing strip height limiting sleeve 5 is slidably fitted on the optical axis. A support plate 24 is fixedly connected to the top of the optical axis, and a position display 41 is installed on the support plate. The handwheel lifting shaft 43 of the position display is threadedly connected to the threaded hole of the sealing strip height limiting sleeve. A handwheel 42 is installed on the top of the handwheel lifting shaft. The upper end of the rotating main shaft is rotatably connected to the support plate. By rotating the handwheel, the position of the sealing strip height limiting sleeve can be precisely adjusted to achieve precise control of the sealing strip height.

[0048] The components include: 1. **Optical axis:** A vertically positioned guide shaft, typically a polished metal cylindrical rod, providing a vertical sliding track for the edge banding height limiting sleeve. 2. **Edge banding height limiting sleeve:** A sleeve structure with an inner cavity, typically made of aluminum alloy, its inner cavity dimensions matching the outer diameter of the optical axis, used to limit the maximum lifting height of the edge banding. 3. **Position indicator:** A mechanical height indicator with graduated markings, typically a ring-shaped dial with a pointer, used to display the real-time lifting position of the edge banding height limiting sleeve. 4. **Handwheel lifting shaft:** A rotating shaft with external threads, typically a stainless steel screw structure, which engages with the threaded hole of the edge banding height limiting sleeve to achieve helical lifting motion. 5. **Support plate:** A horizontally positioned load-bearing plate, typically welded from steel plate, used to fix the top of the optical axis and provide mounting support for the rotating spindle.

[0049] Specifically, the edge banding height limiting sleeve is connected to the handwheel lifting shaft via a threaded hole, forming a helical pair. When the handwheel is manually rotated, the handwheel lifting shaft experiences axial displacement, pushing the edge banding height limiting sleeve to slide vertically along the optical axis. The position display is connected to the handwheel lifting shaft via a mechanical linkage mechanism, converting the rotation angle of the lifting shaft into the displacement of the edge banding height limiting sleeve and displaying it on the dial. The support plate also supports the upper bearing seat of the rotating spindle, ensuring that the rotating spindle remains coaxial with the optical axis. When the edge banding height limiting sleeve is adjusted to the set height, its internal space completely encloses the synchronous belt, preventing motion interference between the synchronous belt and the height limiting sleeve.

[0050] Furthermore, when the edge sealing strip height limiting sleeve moves vertically along the optical axis and overlaps with the synchronous belt, the synchronous belt is within the internal space of the edge sealing strip height limiting sleeve, ensuring that the synchronous belt and the edge sealing strip height limiting sleeve do not interfere with each other during the bonding process, thus ensuring the smooth progress of the bonding work.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A bonding mechanism for a laser edge banding machine, characterized in that, The device includes a thickened sleeve, within which a balance wheel rotation shaft is rotatably connected. A main rotation shaft is rotatably connected inside the balance wheel rotation shaft. The upper end of the balance wheel rotation shaft passes through a platform and is fixedly connected to a balance wheel connecting plate. An auxiliary balance wheel shaft is fixedly connected to the balance wheel connecting plate. An eccentric shaft sleeve is installed on the outer side of the auxiliary balance wheel shaft. A first synchronous pulley is fixedly connected to the outer side of the main rotation shaft. A second synchronous pulley is rotatably connected to the outer side of the eccentric shaft sleeve. The first and second synchronous pulleys are connected by a synchronous belt drive.

2. The bonding mechanism of the laser edge banding machine according to claim 1, characterized in that, A transmission sprocket is mounted at the bottom of the rotating spindle, and the rotation of the transmission sprocket can drive the synchronous belt.

3. The bonding mechanism of the laser edge banding machine according to claim 2, characterized in that, The inner wall of the edge banding machine is equipped with a drive motor, and the output shaft of the drive motor is connected to a drive sprocket. The drive sprocket and the transmission sprocket are driven and connected by a first chain.

4. The bonding mechanism of the laser edge banding machine according to claim 1, characterized in that, A first sprocket is mounted on the outside of the balance wheel's rotation axis. The rotation of the first sprocket can drive the balance wheel connecting plate to rotate.

5. The bonding mechanism of the laser edge banding machine according to claim 4, characterized in that, The bottom of the platform is provided with a fixed shaft, and a second sprocket is rotatably connected to the fixed shaft. The first sprocket and the second sprocket are driven by a second chain. A cylinder is rotatably connected to the bottom of the platform, and the telescopic rod of the cylinder is rotatably connected to a fixed block. The fixed block is engaged with the second chain.

6. The bonding mechanism of the laser edge banding machine according to claim 1, characterized in that, The top of the swing wheel auxiliary shaft is fixedly provided with an optical axis, and a sealing strip height limiting sleeve is slidably fitted on the optical axis. A support plate is fixedly connected to the top of the optical axis, and a position display is installed on the support plate. The handwheel lifting shaft of the position display is threadedly connected to the threaded hole of the sealing strip height limiting sleeve. A handwheel is installed on the top of the handwheel lifting shaft, and the upper end of the rotating main shaft is rotatably connected to the support plate.

7. The bonding mechanism of the laser edge banding machine according to claim 6, characterized in that, When the edge sealing strip height limiting sleeve moves vertically along the optical axis and overlaps with the synchronous belt, the synchronous belt is within the internal space of the edge sealing strip height limiting sleeve.

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