Irregular multi-head dispensing system

Abstract

The invention provides an irregular multi-head dispensing system, and relates to the technical field of dispensing equipment. Comprising a position adjusting mechanism and a multi-head dispensing mechanism connected to the position adjusting mechanism. The position adjusting mechanism is suitable for driving the multi-head dispensing mechanism to irregularly swing above cloth in the moving direction of the cloth; the multi-head dispensing mechanism comprises a first motor and a plurality of rotatable dispensing heads connected to a glue supply system, and the first motor is suitable for driving the plurality of dispensing heads to rotate synchronously or asynchronously; and each dispensing head is provided with dispensing needle tubes with different inclination angles and / or inclination directions, so that each dispensing needle tube irregularly applies glue at any position on a material distribution plane during rotation. By means of the scheme, efficient and irregular sizing is achieved.

Description

Technical Field

[0001] This invention relates to the field of dispensing equipment technology, and more specifically, to an irregular multi-head dispensing system. Background Technology

[0002] In the production of textile decorations, especially in the manufacture of high-end fabrics such as rhinestone-embellished mesh, it is often necessary to form irregularly distributed adhesive dots on the base fabric surface to fix the decorations. Traditional dispensing equipment, limited by its mechanical structure, typically uses a servo motor to drive the dispensing head along a preset path for regular movement, resulting in linear or matrix-like arrangements of adhesive dots. This regularly distributed adhesive dot pattern not only affects the aesthetics of the product but also appears stiff and rigid when mimicking the random distribution effect of natural decorations. Existing technologies attempt to achieve changes in adhesive dot position by programming the movement trajectory of the dispensing head or intermittently adjusting the fabric conveying speed, but this method has two significant drawbacks: first, adjusting the movement trajectory requires frequent start-stop operations, leading to a reduction in production efficiency of approximately 30%-40%; second, due to the periodicity of the motion algorithm, the actual distribution of adhesive dots can still be identified by potential patterns, failing to achieve a truly random effect. Especially when processing large areas of fabric, this pseudo-random distribution can cause regional clustering or sparseness of decorations, severely affecting the consistency of product quality. In addition, traditional single-point dispensing head structures are prone to uneven dispensing during high-speed operation, while simple multi-head parallel structures make it difficult to achieve independent parameter adjustment for each dispensing head, further limiting the realization of irregular dispensing effects. Summary of the Invention

[0003] This invention discloses an irregular multi-head dispensing system, which has the advantages of achieving truly irregular glue distribution, improving production efficiency and the aesthetics of glue dots.

[0004] This application provides an irregular multi-head dispensing system, the technical solution of which is as follows: it includes a position adjustment mechanism and a multi-head dispensing mechanism connected to the position adjustment mechanism; the position adjustment mechanism is adapted to drive the multi-head dispensing mechanism to move irregularly above the fabric along the direction of fabric movement; the multi-head dispensing mechanism includes a first motor and a plurality of rotatable dispensing heads connected to the glue supply system, the first motor being adapted to drive the plurality of dispensing heads to rotate synchronously or asynchronously; each dispensing head is provided with a dispensing needle with a different tilt angle and / or tilt direction, so that each dispensing needle can apply glue irregularly at any position on the fabric plane during rotation.

[0005] Furthermore, this application also proposes that the multi-head dispensing mechanism includes a mounting plate on which two rows of dispensing heads are arranged, each dispensing head having a rotating part with gear teeth; a first motor is connected to the rotating part of each dispensing head via a synchronous belt drive to drive all dispensing heads to rotate synchronously.

[0006] Furthermore, this application also proposes that two rows of dotting heads are arranged in parallel, and a timing belt is connected to the outside of the rotating part for gear meshing of each rotating part.

[0007] Furthermore, this application also proposes that the mounting plate is provided with several pressure rollers, with one pressure roller arranged every two dispensing heads to press against the outside of the timing belt, so that the timing belt remains engaged with the gear teeth.

[0008] Furthermore, this application also proposes that the dispensing needle adopt a deformable metal tube body to facilitate changing the tilt angle and / or tilt direction of the dispensing needle.

[0009] Furthermore, this application also proposes that the position adjustment mechanism includes a mounting bracket and a second motor connected to the mounting bracket. Two mounting blocks are provided extending outward from one side of the mounting bracket. The output shaft of the second motor is connected to a deflection shaft via a deflection mechanism, and a movable block is connected to one side of the deflection shaft. The left and right sides of the movable block are connected to the mounting blocks via sliding mechanisms. Each sliding mechanism includes a transverse slide rail provided on the movable block, a vertical slide rail connected to the mounting block, and a slider that movably connects the transverse slide rail and the vertical slide rail. The movable block is adapted to swing back and forth and up and down on the mounting bracket under the drive of the deflection shaft to change the spatial position of the multi-head dispensing mechanism.

[0010] Furthermore, this application also proposes that the second motor is connected to a control system, which is adapted to control the second motor to randomly switch its speed to change the swing speed of the movable block, thereby controlling the multi-head dispensing mechanism to move irregularly above the fabric, so as to achieve irregular dispensing of adhesive on the fabric.

[0011] Furthermore, this application also proposes that the deflection mechanism includes a connecting block connected to the output wheel of the second motor, a deflection block with an eccentric mounting hole fixedly connected to the connecting block, and a deflection shaft connected to the eccentric mounting hole of the deflection block; the end of the deflection shaft away from the second motor is connected to a rotating bearing through another deflection block.

[0012] Furthermore, this application also proposes that the central axes of the output shafts of the first motor and the second motor are perpendicular to each other.

[0013] Furthermore, this application also proposes to include a fabric transmission mechanism for driving the fabric through the area below the multi-head dispensing mechanism; above the fabric transmission mechanism, along the width direction of the fabric, multiple sets of the irregular multi-head dispensing systems are arranged to cover the width range of the fabric, and the rotation speeds of the first motor and the second motor of each set of the irregular multi-head dispensing systems are different.

[0014] As can be seen from the above, the irregular multi-head dispensing system provided in this application drives the dispensing head to move irregularly through a position adjustment mechanism. Combined with dispensing heads that can rotate synchronously or asynchronously and have needles with different angles, it realizes the spatial random distribution of adhesive dots on the fabric surface. It has the advantages of breaking through the limitations of traditional equipment movement laws, eliminating the regularity of adhesive dot distribution, and avoiding efficiency losses caused by frequent equipment start-ups and shutdowns. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an irregular multi-head dispensing system according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the connection between the position adjustment mechanism and the multi-head dispensing mechanism of an irregular multi-head dispensing system according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the position adjustment mechanism of an irregular multi-head dispensing system according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the dispensing head rotating part of an irregular multi-head dispensing system according to an embodiment of the present invention; Reference numerals: 1. Position adjustment mechanism; 11. Mounting bracket; 12. Mounting block; 13. Second motor; 14. Deflection shaft; 15. Movable block; 16. Horizontal slide rail; 17. Vertical slide rail; 18. Slider; 19. Connecting block; 110. Deflection block; 111. Rotary bearing; Multi-head dispensing mechanism 2, first motor 21, dispensing head 22, rotating part 221, dispensing needle 222, synchronous belt 23, mounting plate 24, pressure roller 25; Fabric transmission mechanism 3. Detailed Implementation

[0016] Combination Figures 1 to 4 As shown, this embodiment provides an irregular multi-head dispensing system, including a position adjustment mechanism 1 and a multi-head dispensing mechanism 2 connected to the position adjustment mechanism 1; the position adjustment mechanism 1 is adapted to drive the multi-head dispensing mechanism 2 to move irregularly above the fabric along the direction of fabric movement; the multi-head dispensing mechanism 2 includes a first motor 21 and a plurality of rotatable dispensing heads 22 connected to the glue supply system, the first motor 21 is adapted to drive the plurality of dispensing heads 22 to rotate synchronously or asynchronously; each dispensing head 22 is provided with a dispensing needle 222 with different tilt angles and / or tilt directions, so that each dispensing needle 222 can apply glue irregularly at any position on the fabric plane when rotating.

[0017] The position adjustment mechanism 1 refers to a mechanical device capable of multi-dimensional spatial position adjustment. Specifically, it can be implemented using a transmission system with eccentric wheels and sliding components. Its function is to break the regularity of traditional linear or circular motion, and, combined with changes in the rotational speed of the drive motor, to create an unpredictable movement trajectory for the dispensing mechanism. The multi-head dispensing mechanism 2 refers to a dispensing device integrating multiple independent rotating units. Specifically, it can achieve multi-axis linkage through a synchronous belt 23 pulley set. Its function is to form a composite glue dot distribution pattern through the coordinated movement of multiple dispensing heads 22. The rotatable dispensing head 22 refers to a rotatable glue dispensing unit whose rotational motion causes the glue to form a dynamic landing point under centrifugal force. The difference in the tilt angle of the dispensing needles 222 refers to the different angles formed between the axis of each needle and the fabric plane. Specifically, the angle can be adjusted through an adjustable tube clamp. This design creates spatial differences in the glue spray trajectory of each needle.

[0018] When the position adjustment mechanism 1 drives the dispensing mechanism to move non-repetitively, the multiple dispensing heads 22 rotate, and their tilted needles produce different glue spraying directions due to angle differences. As the dispensing heads 22 rotate synchronously or asynchronously, the glue dispensing position of each needle changes continuously on the fabric plane. Combined with the irregular movement of the dispensing mechanism itself, this ultimately forms a spatially distributed array of glue dots with non-repetitive characteristics. In this process, the superposition effect of the needle tilt angle differences and rotational motion effectively avoids the regular glue dot distribution caused by fixed motion parameters in traditional dispensing systems.

[0019] This solution, through the coordinated action of the position adjustment mechanism 1 and the rotating dispensing head 22, achieves natural randomization of the dispensing position during continuous operation, without interrupting the production process for position adjustment. Furthermore, the composite motion mode of multiple tilting needles significantly improves the density and randomness of the dispensing distribution per unit time compared to a single needle structure.

[0020] Through the above technical solution, this application can form a distribution of adhesive dots with natural random characteristics on the fabric surface, effectively meeting the process requirements for irregular patterns in the production of decorative materials. This technical solution enables unpredictable changes in the position of the adhesive dots during continuous production, avoiding the efficiency losses caused by frequent machine stops for adjustments in traditional methods. Furthermore, by replacing manual intervention with the coordinated movement of mechanical structures, the degree of production automation is improved.

[0021] Combination Figures 2 to 4As shown, in this embodiment, the multi-head dispensing mechanism 2 includes a mounting plate 24, on which two rows of dispensing heads 22 are arranged. Each dispensing head 22 has a rotating part 221 with gear teeth. A first motor 21 is connected to the rotating part 221 of each dispensing head 22 via a synchronous belt 23 to drive all dispensing heads 22 to rotate synchronously. The mounting plate 24 is a support structure for fixing the dispensing heads 22, and can be made of metal sheet or composite material. Its surface has mounting holes to fix the dispensing heads 22. The first motor 21 is also mounted on the mounting plate 24. The parallel arrangement of the two rows of dispensing heads 22 means that the two sets of dispensing heads 22 are spaced apart along the length of the mounting plate 24. Specifically, they can be arranged in an alternating or symmetrical manner to expand the adhesive coverage area. Synchronous belt 23 transmission refers to the transmission of power through the meshing of a toothed flexible belt with the teeth of the rotating part 221. Specifically, a synchronous belt 23 made of rubber or polyurethane can be used. The meshing accuracy with the teeth is maintained by a tensioning device, thereby ensuring that all dispensing heads 22 rotate at the same speed.

[0022] Here, the mounting plate 24 serves as the basic load-bearing structure, and two rows of dispensing heads 22 are fixed in preset positions. Each dispensing head 22 has teeth machined on its outer circumference of the rotating part 221. The output shaft of the first motor 21 is connected to the drive wheel, and the synchronous belt 23 surrounds the drive wheel and meshes with the teeth of all rotating parts 221. When the first motor 21 starts, the synchronous belt 23 drives all rotating parts 221 to rotate synchronously, causing the dispensing needle 222 to form an application trajectory on the fabric surface. Furthermore, guide grooves can be provided on both sides of the mounting plate 24 to limit the lateral displacement of the synchronous belt 23 and prevent tooth slippage during transmission.

[0023] This solution uses a single motor and a synchronous belt 23 to drive two rows of dispensing heads 22, simplifying the transmission structure and reducing manufacturing costs. It effectively solves the problem of difficult synchronous control of multi-head dispensing mechanisms 2, achieving precise synchronous rotation of multiple dispensing heads 22 through the synchronous belt 23, ensuring consistent glue application trajectories. During the production of rhinestone-embellished mesh, this structure ensures that each dispensing needle 222 rotates synchronously, avoiding uneven glue dot distribution due to speed differences, thereby improving the uniformity of decorative adhesion and production efficiency.

[0024] It should be noted that in other embodiments, the rotation speed of different dispensing heads 22 can be achieved by controlling the number or interval of the gear teeth on the dispensing head 22 that mesh with the timing belt 23, thereby achieving asynchronous rotation and further improving randomization.

[0025] In a preferred embodiment, two rows of dispensing heads 22 are arranged in parallel, and a timing belt 23 is connected to the outside of the rotating part 221 for meshing with the gear teeth of each rotating part 221. Simultaneously, a plurality of pressure rollers 25 are provided on the mounting plate 24, with one pressure roller 25 arranged every two dispensing heads 22 to press against the outside of the timing belt 23, ensuring that the timing belt 23 remains engaged with the gear teeth. The parallel arrangement means that the two rows of dispensing heads 22 are aligned at the same interval, which can be achieved using a linear or staggered layout. For example, the two rows of dispensing heads 22 extend along the length of the mounting plate 24 while maintaining a parallel spacing to expand the adhesive coverage area. The timing belt 23 being connected to the outside of the rotating part 221 means that the timing belt 23 is arranged around the periphery of the rotating part 221 of the two rows of dispensing heads 22. For example, the timing belt 23 covers the outer gear teeth of the two rows of dispensing heads 22 in a circular path, thereby forming a closed transmission circuit.

[0026] The pressure roller 25 is a rolling component with a cylindrical contact surface, which can be implemented using a metal wheel with bearings. Its outer surface contacts the timing belt 23 to form rolling friction. The arrangement of two dispensing heads 22 at intervals means that a pressure roller 25 is placed every two dispensing heads 22 along the arrangement direction of the mounting plate 24. This can be achieved by opening equally spaced mounting holes on the surface of the mounting plate 24. Pressing the outer side of the timing belt 23 means applying pressure perpendicular to the belt surface to the timing belt 23 through the pressure roller 25. This can be achieved using a spring-loaded elastic pressure block structure, causing the pressure roller 25 to continuously adhere to and compress the timing belt 23.

[0027] When the two rows of dispensing heads 22 are arranged in parallel, the teeth of their rotating parts 221 extend along the length of the mounting plate 24. The synchronous belt 23 is arranged around the outside of the two rows of dispensing heads 22, so that the inner tooth surface of the synchronous belt 23 meshes with the teeth of the rotating parts 221. When the first motor 21 drives the synchronous belt 23, the synchronous belt 23 drives the two rows of dispensing heads 22 to rotate synchronously through the outer path, thereby ensuring that the rotation angle of each dispensing head 22 is consistent. The two rows of dispensing heads 22 arranged in parallel form a double adhesive coverage in the direction of fabric movement, and the outer connection method of the synchronous belt 23 can avoid transmission interference caused by the dense arrangement of the dispensing heads 22. The synchronous rotation stability of the two rows of dispensing heads 22 is maintained by the transmission of the outer synchronous belt 23, thereby maintaining the uniformity of adhesive distribution during irregular movement and avoiding dispensing interruption or deviation due to transmission failure.

[0028] A pressure roller 25 is placed every two dispensing heads 22, ensuring that the synchronous belt 23 is always confined to the tooth meshing area by the pressure roller 25 during transmission. Lateral offset or vibration generated by the synchronous belt 23 during transmission is absorbed by the rolling contact surface of the pressure roller 25, thus preventing the teeth from disengaging. By placing pressure rollers 25 at specific intervals, the contact area between the synchronous belt 23 and the teeth is directly constrained, effectively preventing meshing failure caused by localized stress concentration due to the rotation of the dispensing head 22 during transmission.

[0029] Through the above technical solution, this application can ensure that the synchronous belt 23 transmission system of all dispensing heads 22 in the multi-head dispensing mechanism 2 maintains a stable meshing state when running at high speed, avoids the problem of asynchronous rotation of dispensing heads 22 caused by slippage or disengagement of synchronous belt 23, and thus ensures the movement accuracy of each dispensing needle tube 222 during irregular dispensing process.

[0030] In a preferred embodiment, the dispensing needle 222 is a deformable metal tube to facilitate changes in its tilt angle and / or tilt direction. The deformable metal tube refers to a tubular structure made of a metal material with a certain degree of flexibility, which maintains its shape after plastic deformation, thereby fixing the adjusted tilt state; for example, aluminum alloy. The tilt angle and / or tilt direction refers to the angle formed between the axis of the dispensing needle 222 and the fabric plane, and its projected orientation. This can be achieved by manually bending or using tools to adjust the shape of the metal tube, allowing different dispensing needles 222 to create differentiated adhesive spray trajectories.

[0031] Specifically, during the operation of the multi-head dispensing mechanism 2, the operator can independently adjust the shape of each dispensing needle 222 according to actual needs. For example, by applying external force to cause the metal tube to bend and deform, the outlet end of the dispensing needle 222 can be oriented in different spatial directions. When the dispensing head 22 rotates, the needles with different tilt angles are thrown out with different trajectories under the action of centrifugal force, thereby forming randomly distributed glue dots on the fabric surface.

[0032] Compared to existing technologies, traditional dispensing needles 222 typically employ a fixed-angle rigid plastic or metal structure, requiring the replacement of the entire component to adjust the angle, thus failing to achieve dynamic shape changes for individual needles. In contrast, the deformable metal tube allows for rapid adjustment of the tilt parameters of individual needles without disassembling the equipment, significantly improving the randomness control of the dispensing trajectory. This enables rapid and flexible adjustment of the tilt parameters of the dispensing needle 222, allowing the multi-head dispensing mechanism 2 to produce more diverse glue dot distribution patterns, effectively solving the problem of repetitive dispensing trajectories caused by the fixed angle limitations of traditional equipment. This design is particularly suitable for decorative inlay scenarios requiring highly random glue dot distribution, achieving different dispensing effects with a single adjustment, avoiding efficiency losses caused by frequent downtime for component replacement.

[0033] Combination Figures 1 to 3 As shown, in this embodiment, the position adjustment mechanism 1 includes a mounting bracket 11 and a second motor 13 connected to the mounting bracket 11. Two mounting blocks 12 are provided extending outward from one side of the mounting bracket 11. The output shaft of the second motor 13 is connected to a deflection shaft 14 through a deflection mechanism, and a movable block 15 is connected to one side of the deflection shaft 14. The left and right sides of the movable block 15 are connected to the mounting blocks 12 through sliding mechanisms. Each sliding mechanism includes a horizontal slide rail 16 provided on the movable block 15, a vertical slide rail 17 connected to the mounting block, and a slider 18 that movably connects the horizontal slide rail 16 and the vertical slide rail 17. The movable block 15 is adapted to swing back and forth and up and down on the mounting bracket 11 under the drive of the deflection shaft 14 to change the spatial position of the multi-head dispensing mechanism 2.

[0034] The deflection mechanism is a mechanical structure that converts the rotational motion of the second motor 13 into the oscillating motion of the deflection shaft 14. Specifically, it can be implemented by connecting the block 19 and engaging the eccentric mounting hole, thereby changing the position of the rotation center through the eccentric mounting hole and producing an asymmetrical oscillating trajectory. The sliding mechanism is a guide component that allows the movable block 15 to slide in both the horizontal and vertical directions. Specifically, it can be implemented by hinged horizontal slide rail 16 and vertical slide rail 17 via a slider 18, allowing the movable block 15 to freely adjust its position in both the horizontal and vertical directions during oscillation. The mounting block 12 is a support structure fixed to the side of the mounting bracket 11, specifically implemented as a metal block with guide grooves, used to constrain the range of motion of the sliding mechanism.

[0035] When the second motor 13 drives the deflection shaft 14 to rotate, the movement trajectory of the deflection shaft 14 exhibits asymmetrical oscillation due to the presence of the eccentric mounting hole in the deflection mechanism. The movable block 15, driven by the deflection shaft 14, generates a forward and backward displacement. Simultaneously, the transverse slide rail 16 and the vertical slide rail 17 in the sliding mechanism form a compound sliding pair through the slider 18, allowing the movable block 15 to adjust its vertical displacement under the constraint of the mounting blocks 12 on both sides. Therefore, the movable block 15 can simultaneously change its forward and backward and vertical positions during the oscillation process, driving the multi-head dispensing mechanism 2 to form an irregular movement trajectory in three-dimensional space above the fabric.

[0036] By combining the deflection and sliding mechanisms, the motion freedom of the movable block 15 is extended from a single plane to three-dimensional space. Combined with the random speed control of the second motor 13, more complex and irregular motion paths can be generated. This enables dynamic and irregular adjustment of the multi-head dispensing mechanism 2's position in the space above the fabric, resulting in greater randomness in the application position of the dispensing needle 222 on the fabric plane. The combination of the movable block 15's composite swing trajectory and the sliding mechanism's degrees of freedom avoids the problem of repetitive glue dot distribution caused by the regularity of motion in traditional mechanisms, thus forming a truly irregular glue distribution pattern on the fabric surface, meeting the requirements of random dispensing processes for decorative materials such as rhinestone-embellished mesh.

[0037] In a preferred embodiment, the second motor 13 is connected to a control system. The control system is adapted to control the second motor 13 to randomly switch its rotation speed to change the swing speed of the movable block 15, thereby controlling the multi-head dispensing mechanism 2 to move irregularly above the fabric, so as to achieve irregular dispensing of adhesive on the fabric. The control system refers to an electronic module used to adjust the operating state of the second motor 13. Specifically, it can be implemented using a programmable logic controller (PLC) or an embedded microprocessor. It generates speed switching commands through a preset random algorithm, thereby driving the second motor 13 to change the rotation frequency of its output shaft. The random speed switching refers to the non-periodic change of the rotation speed of the second motor 13 within a preset range. Specifically, it can be achieved by using a random number generator or a probability model to control the acceleration or deceleration process of the motor, making the swing trajectory of the movable block 15 unpredictable. The swing speed refers to the instantaneous rate of the movable block 15 when it moves in space under the drive of the deflection shaft 14. Specifically, it can be achieved by adjusting the torque output or pulse frequency of the second motor 13. The change in swing speed directly causes a random offset in the movement path of the multi-head dispensing mechanism 2 above the fabric.

[0038] When the control system sends a randomly generated speed command to the second motor 13, the output shaft of the second motor 13 drives the movable block 15 to swing at a non-uniform speed through a deflection mechanism. The movable block 15 is connected to the mounting block 12 through a sliding mechanism. During its swing, the combined movement of the horizontal slide rail 16 and the vertical slide rail 17 causes the multi-head dispensing mechanism 2 on the mounting plate 24 to produce irregular displacement above the fabric. Because the speed change of the second motor 13 is random, the movement trajectory of the multi-head dispensing mechanism 2 in the fabric movement and width direction cannot form a fixed pattern, resulting in a disordered distribution of the dispensing needle 222 on the fabric plane.

[0039] The random algorithm of the control system directly drives the second motor 13 to change its speed, causing the movement trajectory of the multi-head dispensing mechanism 2 to automatically generate unpredictable deviations. This allows for continuous, irregular dispensing without requiring machine stoppage for adjustment. It solves the problem of repetitive dispensing paths caused by regular motion in traditional dispensing systems, avoids the inefficient operation of manual position adjustments, and can generate irregular dispensing trajectories in real time during fabric transmission, ensuring the randomness and naturalness of glue distribution. This meets the needs of irregular adhesive processes for decorative materials such as rhinestone-encrusted mesh.

[0040] The deflection mechanism described in this embodiment includes a connecting block 19 connected to the output wheel of the second motor 13, and a deflection block 110 with an eccentric mounting hole fixedly connected to the connecting block 19. The output shaft is connected to the eccentric mounting hole of the deflection block 110. The end of the eccentric shaft away from the second motor 13 is connected to the rotating bearing 111 through another deflection block 110. The connecting block 19 is a rigid component used to transmit power from the second motor 13. Specifically, it can be made of an aluminum alloy block and rigidly connected to the motor output wheel with bolts to achieve power transmission. This component can withstand the periodic load generated by the eccentric motion. The eccentric mounting hole is a through hole offset from the geometric center of the deflection block 110. Specifically, it can be machined using a CNC machine tool to create a hole offset from the center by 5-50 mm. This structure causes the deflection block 110 to generate an asymmetrical motion trajectory during rotation, thereby driving the movable block 15 to produce a composite displacement.

[0041] When the second motor 13 starts, the output shaft drives the connecting block 19 to rotate, and the deflection block 110, which is fixed to the connecting block 19, rotates eccentrically through its eccentric mounting hole. This eccentric motion is transmitted to the movable block 15 through the eccentric shaft, causing the movable block 15 to form a three-dimensional spatial trajectory under the constraint of the sliding mechanism. At the same time, the end of the eccentric shaft cooperates with the rotating bearing 111 through another deflection block 110 to form a stable rotational support point. This structure enables the position adjustment mechanism 1 to generate asymmetrical and nonlinear motion paths, thereby driving the dispensing head 22 to form an unpredictable movement trajectory above the fabric. This solution, through the eccentric mounting hole and the double deflection block 110 structure, makes the motion trajectory random and non-repeatable. It realizes the autonomous randomization of the motion trajectory of the position adjustment mechanism 1, generating irregular motion paths without relying on an external control system. This structure effectively solves the technical defect of traditional dispensing systems that require frequent parameter adjustments to obtain random trajectories, making the distribution of decorations on the fabric present a natural and disordered visual effect.

[0042] In this embodiment, the central axes of the output shafts of the first motor 21 and the second motor 13 are perpendicular to each other. Perpendicularity of the central axes means that the rotation planes of the two motors are orthogonal in space. This can be achieved by mounting the motors on mutually perpendicular mounting surfaces, ensuring that their movement directions do not interfere with each other. The first motor 21 drives the dispensing head 22 to rotate, changing the dispensing direction of the dispensing needle 222. The second motor 13 drives the multi-head dispensing mechanism 2 to move above the fabric via the position adjustment mechanism 1. Because their central axes are perpendicular, the rotational movement of the first motor 21 does not affect the spatial position adjustment driven by the second motor 13. The two-dimensional motion control is independent, thus forming a composite motion trajectory on the fabric surface. The superposition of different-dimensional movements creates a more complex, irregular trajectory, avoiding the problem of repeated dispensing paths caused by motion coupling in traditional systems, thus improving the naturalness of the decorative inlay and production efficiency.

[0043] In this embodiment, a fabric transmission mechanism 3 is also included to drive the fabric through the area below the multi-head dispensing mechanism 2; multiple sets of irregular multi-head dispensing systems are arranged above the fabric transmission mechanism 3 along the width direction of the fabric to cover the width range of the fabric, and the rotation speeds of the first motor 21 and the second motor 13 of each set of irregular multi-head dispensing systems are different.

[0044] The fabric transmission mechanism 3 refers to the device used to carry and transport the fabric through the processing area. Specifically, it can be implemented using a conveyor belt or roller structure. Its function is to achieve continuous movement of the fabric, enabling the multi-head dispensing system to apply adhesive to the moving fabric. The irregular multi-head dispensing system refers to a combination device including the position adjustment mechanism 1 and the multi-head dispensing mechanism 2. Different rotation speeds mean that the first motor 21 and the second motor 13 in different multi-head dispensing systems operate at different speeds. This can be achieved through independently controlled variable frequency motors or servo motors. Its function is to create a denser and more random distribution of adhesive dots on the fabric by combining differentiated motion parameters, making the movement trajectories of the dispensing heads 22 of each system independent and irregularly superimposed.

[0045] Specifically, the fabric transmission mechanism 3 drives the fabric to move at a constant speed along its length, while multiple sets of irregular multi-head dispensing systems alternately perform irregular movements along the width and height directions above the fabric. For example, a gantry bracket is set above the fabric transmission mechanism 3 to install four sets of multi-head dispensing systems, with adjacent multi-head dispensing systems alternately arranged on the front and rear sides of the gantry bracket to save installation space and to spatially stagger the distribution of each set of multi-head dispensing systems, thus forming an initial misalignment of the glue dots. Here, the first motor 21 of each set of multi-head dispensing systems drives the dispensing head 22 to rotate at different speeds, and the second motor 13 drives the position adjustment mechanism 1 to swing up and down and back and forth at different rates, thereby making the movement trajectory of the dispensing needles 222 of each system different on the fabric plane. Since the motion parameters of different systems are set independently, the superposition of the tilt angle, rotation speed and position offset of the dispensing needles 222 significantly improves the density and randomness of the glue drop distribution on the fabric. For example, when the dispensing head 22 of the first system rotates at a higher speed, the glue dots are distributed in a spiral shape, while when the dispensing head 22 of the second system rotates at a lower speed, the glue dots are distributed in a discontinuous linear shape. The superposition of the two can form a random glue dot array without repetition.

[0046] This solution utilizes multiple independently operating multi-head dispensing systems working collaboratively to simultaneously generate various irregular motion trajectories during continuous fabric movement. This achieves high-density, random adhesive dot distribution without frequent start-stop operations or fabric position adjustments. It solves the problems of limited application range and insufficient randomness of single-system applications. By differentiating the motion parameters of multiple systems, the randomness and coverage density of adhesive dot distribution are significantly improved. This allows for efficient, irregular adhesive application to the fabric surface during continuous production, meeting the requirements for random adhesive distribution in decorative inlay processes.

[0047] The above technical solution enables the irregular operation of the dispensing system, meeting the needs of irregular dispensing.

[0048] It should be understood that the above are merely preferred embodiments of the present invention, and the scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

[0049] The accompanying drawings used in the above description of the embodiments only illustrate certain embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

Claims

1. An irregular multi-head dispensing system, characterized in that, include: A position adjustment mechanism and a multi-head dispensing mechanism connected to the position adjustment mechanism; The position adjustment mechanism is adapted to drive the multi-head dispensing mechanism to swing irregularly above the fabric along the direction of fabric movement; The multi-head dispensing mechanism includes a first motor and several rotatable dispensing heads connected to the glue supply system. The first motor is adapted to drive the multiple dispensing heads to rotate synchronously or asynchronously. Each dispensing head is provided with a dispensing needle with a different tilt angle and / or tilt direction, so that each dispensing needle can apply glue irregularly at any position on the fabric plane when rotating.

2. The irregular multi-head dispensing system according to claim 1, characterized in that, The multi-head dispensing mechanism includes a mounting plate on which two rows of dispensing heads are arranged. Each dispensing head is provided with a rotating part with gear teeth. The first motor is connected to the rotating part of each dispensing head through a synchronous belt drive to drive all dispensing heads to rotate synchronously.

3. The irregular multi-head dispensing system according to claim 2, characterized in that, The two rows of dispensing heads are arranged in parallel, and the timing belt is connected to the outside of the rotating part for gear meshing of each of the rotating parts.

4. The irregular multi-head dispensing system according to claim 3, characterized in that, The mounting plate is provided with several pressure rollers, and a pressure roller is arranged every two dispensing heads to press against the outside of the timing belt, so that the timing belt remains engaged with the gear teeth.

5. The irregular multi-head dispensing system according to claim 1, characterized in that, The dispensing needle uses a deformable metal tube to facilitate changing the tilt angle and / or tilt direction of the dispensing needle.

6. The irregular multi-head dispensing system according to claim 2, characterized in that, The position adjustment mechanism includes a mounting bracket and a second motor connected to the mounting bracket. Two mounting blocks are provided on one side of the mounting bracket extending outward. The output shaft of the second motor is connected to a deflection shaft through a deflection mechanism, and a movable block is connected to one side of the deflection shaft. The left and right sides of the movable block are connected to the mounting block via sliding mechanisms; wherein each sliding mechanism includes a horizontal slide rail disposed on the movable block, a vertical slide rail connected to the mounting block, and a slider that movably connects the horizontal slide rail and the vertical slide rail. The movable block is adapted to swing back and forth and up and down on the mounting bracket under the drive of the deflection shaft to change the spatial position of the multi-head dispensing mechanism.

7. The irregular multi-head dispensing system according to claim 6, characterized in that, The second motor is connected to a control system, which is adapted to control the second motor to randomly switch its speed to change the swing speed of the movable block, thereby controlling the multi-head dispensing mechanism to move irregularly above the fabric, so as to achieve irregular application of glue to the fabric.

8. The irregular multi-head dispensing system according to claim 6, characterized in that, The deflection mechanism includes a connecting block connected to the output wheel of the second motor, a deflection block with an eccentric mounting hole fixedly connected to the connecting block, and a deflection shaft connected to the eccentric mounting hole of the deflection block; the end of the deflection shaft away from the second motor is connected to a rotating bearing through another deflection block.

9. The irregular multi-head dispensing system according to claim 6, characterized in that, The central axes of the output shafts of the first motor and the second motor are perpendicular to each other.

10. The irregular multi-head dispensing system according to claim 1, characterized in that, It also includes a fabric transmission mechanism for driving the fabric through the area below the multi-head dispensing mechanism; above the fabric transmission mechanism, along the width direction of the fabric, multiple sets of the irregular multi-head dispensing systems are arranged to cover the width range of the fabric, and the rotation speeds of the first motor and the second motor of each set of the irregular multi-head dispensing systems are different.

Images