Apex bead forming device and method

Abstract

The invention provides a bead filler tire bead forming device and method.The device comprises a servo feeding device and a laminating drum device, the servo feeding device comprises a servo feeding frame, a synchronous conveying assembly is arranged on the servo feeding frame, a cutting assembly is arranged on the synchronous conveying assembly, and a multi-layer sheet pressing roller assembly is arranged at the discharging end of the synchronous conveying assembly; the laminating drum device comprises a fixed base fixed to the ground, the fixed base is slidably connected with a laminating drum main case through an axial moving assembly, the laminating drum main case is connected with a laminating drum, and the discharging end of the synchronous conveying assembly is located over the center of the laminating drum. According to the device, full-automatic turning, standing, attaching and forming of a semi-steel apex tire bead product can be achieved, the production efficiency and the apex uniformity are improved, and the joint precision after apex forming is greatly improved.

Description

Technical Field

[0001] This invention belongs to the technical field of rubber tire production equipment, specifically relating to a triangular rubber bead forming device and method. Background Technology

[0002] Chinese patent publication CN104302468A discloses a machine and method for forming a tire bead triangular rubber assembly. It relates to a tire forming machine for applying triangular rubber to the tire bead to form a bead triangular rubber assembly for the tire carcass. The tire forming machine includes a bead holder for holding the tire bead, as well as a first clamp and a second clamp. Although the triangular rubber bead formed using this method has high production efficiency, because only the first and second clamps hold the head and tail of the triangular rubber strip, only the alignment accuracy of the head and tail of the triangular rubber strip can be maintained during bonding. Due to the influence of the conveying process and its own shrinkage, the middle position of the triangular rubber strip is not restricted, leading to serpentine deformation in the middle position during bonding. Furthermore, air bubbles may occur when the triangular rubber strip and the steel wire bead are bonded together.

[0003] Chinese patent publication CN111347700A discloses a servo feeding device and feeding method, including a lateral movement component for compensating for the axial deviation of the head and tail of the triangular adhesive before overlapping, a transport system for conveying the triangular adhesive, a cutting component for dividing the triangular adhesive, a delivery device, and a pneumatic frame system for lifting and supporting the main body of the lateral movement component. When using this method for molding, firstly, because the flipping action of the bonding drum occupies space, the servo feeding device and the bonding drum are arranged at a considerable distance, requiring a delivery device to convey the head and tail of the triangular adhesive to the bonding drum. The suspended stretching of the head and tail leads to poor bonding accuracy. Secondly, when changing the size of the tire bead, a manual lifting mechanism is required to adjust the product. If the bonding effect is unsatisfactory, the feeding height needs to be adjusted again by manually cranking the lifting mechanism, resulting in a long adjustment time when changing specifications.

[0004] To improve the joint accuracy and overall flatness of the triangular rubber strip during bonding, reduce air bubbles between the triangular rubber and the steel wire ring, and enhance the automation level of the equipment, this invention provides a servo-fed triangular rubber bead forming device and method. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art and provide a triangular rubber bead forming device and method, which improves production efficiency and triangular rubber uniformity, and significantly improves the joint accuracy after triangular rubber forming.

[0006] This invention is achieved through the following technical solution:

[0007] A first aspect of the present invention provides a triangular rubber bead forming apparatus, comprising:

[0008] A servo feeding device includes a servo feeding frame, a synchronous conveying component on the servo feeding frame, a cutting component on the synchronous conveying component, and a multi-layer sheet pressure roller component at the discharge end of the synchronous conveying component.

[0009] The bonding drum device includes a fixed base fixed to the ground, a bonding drum main unit box slidably connected to the fixed base via an axial moving component, a bonding drum connected to the bonding drum main unit box, and the discharge end of the synchronous conveying component located directly above the center of the bonding drum.

[0010] A further improvement of the present invention is that:

[0011] The distance between the discharge end of the synchronous conveying component and the top of the bonding drum is less than 50mm.

[0012] A further improvement of the present invention is that:

[0013] The servo feeder includes a fixed feeding base, a lifting bracket slidably connected to the sliding feeding base, and a lifting power component for driving the lifting bracket to rise and fall.

[0014] The feeding base is fixed with two opposing sides with first sliders respectively; the lifting bracket includes two lifting plates arranged opposite each other, the two lifting plates are provided with vertical elongated through holes, the two long sides of the elongated through holes are provided with first linear guides, and the first linear guides and the first sliders are slidably connected.

[0015] The lifting power assembly includes a first servo motor and a first ball screw fixed on the feeding base. The first ball screw is vertically arranged. The output shaft of the first servo motor is connected to one end of the first ball screw via a coupling. The nut of the first ball screw is connected to the lifting bracket via a nut mounting seat.

[0016] A further improvement of the present invention is that:

[0017] The synchronous conveying assembly includes a synchronous conveyor belt frame, which includes a fixed plate fixed to the top of the lifting support. Two wall plates are arranged opposite each other on the fixed plate, and a drive pulley and a driven pulley are provided between the two wall plates. The drive pulley and the driven pulley are connected by a synchronous conveyor belt. A drive motor is fixed on one of the wall plates by a motor mounting bracket, and the output end of the drive motor is connected to the drive pulley by a belt pulley.

[0018] A further improvement of the present invention is that:

[0019] The synchronous conveying assembly is provided with a front stop wheel assembly, a rear stop wheel assembly and a side pressure wheel assembly. The front stop wheel assembly and the rear stop wheel assembly are fixed on one of the wall plates and are located at the discharge end and the feed end of the synchronous conveyor belt, respectively. The side pressure wheel assembly is provided on the other wall plate and is arranged opposite to the front stop wheel assembly.

[0020] A further improvement of the present invention is that:

[0021] The side pressure roller assembly includes a slider inclined plate fixed to the wall panel. Two parallel second linear guide rails are slidably connected to the slider inclined plate. A first cylinder is disposed between the two second linear guide rails. The cylinder body of the first cylinder is fixedly mounted on the slider inclined plate, and the piston rod of the first cylinder is parallel to the second linear guide rails. The ends of the two second linear guide rails and the piston rod of the first cylinder are all fixedly connected to a mounting plate. Multiple side pressure rollers are mounted on the mounting plate.

[0022] A further improvement of the present invention is that:

[0023] The synchronous conveyor belt frame is equipped with at least one pressure roller assembly. The pressure roller assembly includes an L-shaped bracket, which includes a vertical fixing plate and a horizontal connecting plate fixedly connected to the vertical fixing plate. The vertical fixing plate is fixed to one of the wall panels. A rotating mounting plate is rotatably connected to the horizontal connecting plate. A second cylinder is fixedly mounted on the rotating mounting plate. The piston rod of the second cylinder points vertically downward. The end of the piston rod of the second cylinder is fixedly connected to the L-shaped pressure roller mounting plate. The pressure roller mounting plate is connected to the pressure roller via a pressure roller shaft.

[0024] A further improvement of the present invention is that:

[0025] The synchronous conveying assembly has an online correction component on one side of the feed end. The online correction component includes a frame fixed to the wall panel, and a camera is fixedly connected to the frame. The camera is used to acquire the position information of the triangular rubber on the synchronous conveyor belt. The camera is connected to the PLC controller through a wire, and the PLC controller is also communicatively connected to the axial movement assembly.

[0026] A further improvement of the present invention is that:

[0027] The axial movement assembly includes two parallel third linear guides and a lateral movement power assembly.

[0028] The third linear guide rail is fixed to the top of the fixed base, and two sliders are fixed on the lower end surface of the fitting drum main body box. The two sliders are slidably connected to the two third linear guide rails respectively.

[0029] The lateral movement power assembly includes a servo motor and a ball screw fixed on the fixed base. The output shaft of the servo motor is connected to one end of the ball screw via a coupling. The nut of the ball screw is fixedly connected to the main housing of the fitting drum.

[0030] A second aspect of the present invention provides a method for forming a triangular rubber bead, wherein the triangular rubber bead forming device is used to form the bead, the method comprising:

[0031] The triangular rubber strips from the storage device are conveyed to the upper surface of the synchronous conveyor belt. As soon as the head of the triangular rubber strip exits the synchronous conveyor belt, it falls onto the upper surface of the bonding drum. Vacuum adsorption holds the head of the triangular rubber strip onto the bonding drum, while the multi-layer sheet pressure roller assembly presses the triangular rubber strip firmly onto the bonding drum. The synchronous rotation of the bonding drum and the synchronous conveyor assembly is controlled to ensure that the position of the triangular rubber strip is synchronized during the process of being conveyed from the synchronous conveyor assembly to the bonding drum, preventing stretching and deformation of the triangular rubber strip. During the process of the triangular rubber strip winding onto the bonding drum, the position data of the triangular rubber strip is fed back in real time through a CCD lens. The axial movement component drives the bonding drum to dynamically move axially, achieving real-time correction of the triangular rubber strip during the winding and bonding process. The bonding drum winds the triangular rubber strip... At the tail end, the bonding drum and synchronous conveyor assembly stop operating simultaneously. The cutting assembly cuts the triangular rubber strip to the length set in the formula. The bonding drum and synchronous conveyor assembly start synchronously and continue to rotate until the triangular rubber strip is wrapped around the bonding drum completely. When the head and tail of the triangular rubber strip overlaps at the multi-layer sheet pressure roller assembly, the winding speed of the bonding drum decreases. The pressure of each multi-layer sheet in the multi-layer sheet pressure roller assembly is adjusted to achieve high joint accuracy and centering accuracy when the head and tail of the triangular rubber strip overlap. After the triangular rubber strip is wound, the synchronous conveyor assembly is raised to a certain height under the action of the lifting power assembly. The triangular rubber strip is flipped up on the bonding drum and then attached to the steel wire ring of the locking block at the end of the bonding drum, thus bonding the triangular rubber strip and the steel wire ring together to form a triangular rubber tire bead product.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] By adopting the triangular rubber bead forming method described in this invention, combined with the servo feeding device and bonding drum device described in this invention, the fully automatic flipping and bonding forming of semi-steel triangular rubber bead products can be achieved, improving production efficiency and triangular rubber uniformity, significantly improving the joint accuracy after triangular rubber forming, realizing automated formula specification switching, and improving the automation and intelligence level of equipment.

[0034] Based on the characteristics of triangular adhesive strips, this invention uses the thick edge of the triangular adhesive strip as a reference and employs a servo-driven synchronous belt conveyor to achieve fixed-length feeding and automatic cutting of the triangular adhesive strips. To prevent the adhesive strips from stretching and deforming during the feeding process to the bonding drum, the servo feeding device and the bonding drum are closely integrated. The servo-driven feeding device automatically lifts the bonding drum to achieve a tilting action. An online correction system is installed on the servo feeding device. The position data of the triangular adhesive strip fed back by the camera is used to drive the bonding drum to move axially dynamically for correction, achieving real-time online correction of the triangular adhesive strip bonding and ensuring the flatness of the beginning and end of the triangular adhesive strip and the entire circle of bonding. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of a triangular rubber bead forming device in an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the servo feeder device in an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the synchronous delivery component in an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the side pressure wheel assembly in an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the pressure roller assembly in an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the connection structure between the main drum housing and the fixed base in an embodiment of the present invention.

[0041] In the diagram, 1. Servo feeding rack; 101. Feeding fixed base; 102. Lifting bracket; 103. Lifting power component; 104. First linear guide rail; 2. Synchronous conveying component; 201. Synchronous conveyor belt frame; 202. Drive pulley; 203. Driven pulley; 204. Synchronous conveyor belt; 205. Drive motor; 3. Cutting component; 4. Plywood pressing roller assembly; 5. Fixed base; 6. Axial movement component; 601. Third linear guide rail; 602. Lateral movement component. 7. Power assembly, 8. Laminating drum main unit, 9. Laminating drum, 10. Front guide wheel assembly, 11. Rear guide wheel assembly, 12. Side pressure roller assembly, 1101. Sliding inclined plate, 1102. Second linear guide rail, 1103. First cylinder, 1104. Mounting plate, 1105. Side pressure roller, 13. Pressure roller assembly, 14. L-shaped bracket, 15. Rotary mounting plate, 16. Second cylinder, 17. Pressure roller mounting plate, 18. Pressure roller, 19. Online correction assembly. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings:

[0043] like Figure 1 As shown, the present invention provides a triangular rubber bead forming device, comprising:

[0044] A servo feeding device includes a servo feeding frame 1, a synchronous conveying component 2 on the servo feeding frame 1, a cutting component 3 on the synchronous conveying component 2, and a multi-layer sheet pressure roller component 4 at the discharge end of the synchronous conveyor belt component 2.

[0045] The bonding drum device includes a fixed base 5 fixed to the ground, a bonding drum main unit 7 slidably connected to the fixed base 5 via an axial moving component 6, and a bonding drum 8 connected to the bonding drum main unit 7; the discharge end of the synchronous conveying component 2 is located directly above the center of the bonding drum 8. Preferably, the distance between the discharge end of the synchronous conveying component 2 and the top of the bonding drum 8 is less than 50mm.

[0046] The triangular rubber strips from the storage device are conveyed to the upper surface of the synchronous conveyor belt of the synchronous conveyor assembly 2. Since the discharge end of the synchronous conveyor assembly 2 is located directly above the center of the bonding drum 8, no additional power is needed to pull the head and tail of the triangular rubber strips during the process of transferring them to the bonding drum 8 via the synchronous conveyor belt. This avoids the uneven tensile force on the head, middle, and tail of the triangular rubber strip during the entire winding process, which would lead to inconsistent stretching deformation of the entire triangular rubber strip and ultimately cause the width of the bonded triangular rubber strip to vary between the head, middle, and tail. The change is as follows: After the head of the triangular rubber strip exits the synchronous conveyor belt of the synchronous conveyor assembly 2, it immediately falls onto the upper surface of the bonding drum 8. Vacuum adsorption then adheres the head of the triangular rubber strip to the bonding drum 8. Simultaneously, the multi-layer sheet pressure roller assembly 4 presses the triangular rubber strip firmly onto the bonding drum 8. By controlling the synchronous rotation of the servo motors of the bonding drum 8 and the synchronous conveyor assembly 2, the position of the triangular rubber strip is synchronized during its transport from the synchronous conveyor assembly 2 to the bonding drum 8. This prevents stretching and deformation of the triangular rubber strip and avoids the overlap between the head and tail of the triangular rubber strip due to inaccurate length, as is common in existing technologies. The quantity varies greatly, and the duration is inconsistent. When the bonding drum 8 wraps the triangular rubber strip to the tail, both the bonding drum 8 and the synchronous conveying component 2 stop operating simultaneously. The cutting component 3 cuts the triangular rubber strip to the length specified in the formula. Because the multi-layer sheet pressure roller constantly presses the triangular rubber strip product, the tail length of the cut triangular rubber strip product is very short, avoiding the serpentine deformation caused by a long tail after cutting, which would result in a large misalignment between the head and tail during bonding. The bonding drum 8 and the synchronous conveying component 2 start up synchronously and continue to rotate until the triangular rubber strip is wrapped around the bonding drum 8 for a complete turn. When the head and tail of the rubber strip overlaps at the multi-layer sheet pressure roller, the winding speed of the bonding drum decreases. Different high pressures are applied to different multi-layer sheets on the multi-layer sheet pressure roller through a proportional valve, ultimately achieving high joint accuracy and centering accuracy when the head and tail of the triangular rubber strip overlap. Finally, the triangular rubber strip semi-finished product is wound on the bonding drum to form a complete circle of triangular rubber. After the triangular rubber strip is wound, the synchronous conveying component 2 is raised to a certain height under the action of the lifting power component, and the triangular rubber is flipped up and bonded to the steel wire ring of the bonding drum, thus bonding the triangular rubber strip and the steel wire ring to form a triangular rubber tire bead product.

[0047] As a preferred embodiment of the present invention, such as Figure 2As shown, the servo feeding rack 1 includes a feeding fixed base 101, a lifting bracket 102 slidably connected to the feeding fixed base 101, and a lifting power assembly 103 for driving the lifting bracket 102 to rise and fall. The feeding fixed base 101 is fixed to the ground, and a first slider is fixed on each of two opposite sides of the feeding fixed base 101. The lifting bracket 102 includes two lifting uprights arranged opposite to each other, and the two lifting uprights are provided with vertical elongated through holes. A first linear guide rail 104 is provided on the two long sides of the elongated through holes, and the first linear guide rail 104 is slidably connected to the first slider. The lifting power assembly 103 includes a first servo motor and a first ball screw fixed to the feeding fixed base 101. The first ball screw is vertically arranged, wherein the first servo motor is fixed on the feeding fixed base 101 through the first motor mount, and the screw of the first ball screw is fixed on the feeding fixed base 101 through the screw support. The output shaft of the first servo motor is connected to one end of the screw of the first ball screw through a coupling. The nut of the first ball screw is connected to the lifting bracket 102 through the nut mounting seat. The rotation of the first servo motor drives the screw of the first ball screw to rotate, which drives the nut of the first ball screw to rise and fall, thereby driving the lifting bracket 102 to rise and fall. Ultimately, this achieves the lifting and falling of the synchronous conveying component 2 and all the components installed on it, in order to avoid the need for the upright space of the fitting drum 8 and to achieve the need for automatic switching of tire specifications.

[0048] As a preferred embodiment of the present invention, such as Figure 2 and Figure 3 As shown, the synchronous conveying assembly 2 includes a synchronous conveyor belt frame 201. The synchronous conveyor belt frame 201 includes a fixed plate fixed to the top of the lifting bracket 102. Two wall plates are arranged opposite each other on the fixed plate. A drive pulley 202 and a driven pulley 203 are provided between the two wall plates. The drive pulley 202 and the driven pulley 203 are connected by a synchronous conveyor belt 204. A drive motor 205 is fixed on one of the wall plates by a motor mounting bracket. The output end of the drive motor 205 is connected to the drive pulley 202 by a pulley. When the output end of the drive motor 205 rotates, it drives the drive pulley 202 to rotate, thereby driving the synchronous conveyor belt 204 to rotate.

[0049] The synchronous conveying assembly 2 is provided with a front stop wheel assembly 9, a rear stop wheel assembly 10 and a side pressure wheel assembly 11. The front stop wheel assembly 9 and the rear stop wheel assembly 10 are fixed on one of the wall plates and are located at the discharge end and the feed end of the synchronous conveyor belt 204, respectively. The side pressure wheel assembly 11 is provided on the other wall plate and is arranged opposite to the front stop wheel assembly 9.

[0050] The front and rear wheel assemblies 9 and 10 have the same structure, including a mounting base fixed to the wall panel. The mounting base is equipped with multiple stop wheels via axles. The arrangement of the front and rear wheel assemblies ensures that the triangular adhesive is kept on the same straight line, improving the alignment when the triangular adhesive is applied.

[0051] like Figure 4 As shown, the side pressure roller assembly 11 includes a slider inclined plate 1101 fixed to the wall panel. Two parallel second linear guide rails 1102 are slidably connected to the slider inclined plate 1101. Specifically, the sliders of the second linear guide rails 1102 are fixed on the slider inclined plate 1101. A first cylinder 1103 is arranged between the two second linear guide rails 1102. The cylinder body of the first cylinder 1103 is fixedly installed on the slider inclined plate 1101 through a mounting seat, and the piston rod of the first cylinder 1103 is parallel to the second linear guide rails 1102. The ends of the two second linear guide rails 1102 and the piston rod of the first cylinder 1103 are all fixedly connected to the mounting plate 1104. Multiple side pressure rollers 1105 are installed on the mounting plate 1104. Specifically, the mounting plate 1104 is provided with multiple through holes, the center points of the through holes are located on the same straight line, and the roller shafts of the side pressure rollers 1105 pass through the through holes and are fastened by nuts. Preferably, the upper surface of the sliding inclined plate 1101 is an inclined plane, gradually tilting upwards from one side of the side pressure roller 1105 to the other side. Under the driving action of the first cylinder 1103, the mounting plate 1104 extends or retracts along the direction of the second linear guide rail 1102, thereby driving the side pressure roller 1105 to extend or retract along the direction of the second linear guide rail 1102. When the head of the triangular rubber is conveyed on the synchronous conveyor belt 204 for the first time, the first cylinder 1103 drives the side pressure roller 1105 to retract. When the head of the triangular rubber is located at or near the discharge end of the synchronous conveyor belt 204 or after cutting, the first cylinder 1103 drives the side pressure roller 1105 to extend and press on the inclined position of the upper surface of the triangular rubber, pushing the tip of the triangular rubber to one side until it is in complete contact with the front guide roller assembly 9, so that the triangular rubber maintains linear motion during the conveying process, preventing serpentine and other defects of the triangular rubber, and improving the level of the triangular rubber bonding.

[0052] In a preferred embodiment of the present invention, the synchronous conveyor belt frame 201 is provided with at least one pressure roller assembly 12, such as... Figure 5As shown, the pressure roller assembly includes an L-shaped bracket 1201. The L-shaped bracket 1201 includes a vertical fixing plate and a horizontal connecting plate fixedly connected to the vertical fixing plate. The vertical fixing plate is fixed to one of the wall panels. A rotating mounting plate 1202 is rotatably connected to the horizontal connecting plate. A second cylinder 1203 is fixedly mounted on the rotating mounting plate 1202. The piston rod of the second cylinder 1203 points vertically downward. An L-shaped pressure roller mounting plate 1204 is fixedly connected to the end of the piston rod of the second cylinder 1203. The horizontal side of the pressure roller mounting plate 1204 is connected to the piston rod of the second cylinder 1203, and the vertical side is connected to the pressure roller 1205 through the pressure roller shaft. After the triangular rubber products from the storage device are conveyed to the synchronous conveyor belt 204, the pressure roller 1205 moves downward under the action of the second cylinder 1203, pressing the triangular rubber firmly onto the upper surface of the synchronous conveyor belt 204 and maintaining its position.

[0053] In a preferred embodiment of the present invention, to ensure that the position of the triangular rubber strip does not change during the conveying process, a feeding stop roller assembly 13 is provided at the feeding end of the synchronous conveying component, using the thick side of the triangular rubber strip as a reference. The triangular rubber product conveyed from the storage device is then limited to the left and right by the feeding stop roller assembly 13 before being conveyed to the upper surface of the synchronous conveyor belt 204. Preferably, the inner stop roller of the feeding stop roller assembly 13 is fixed, while the outer stop roller can be manually adjusted and limited according to the width of the triangular rubber strip, thus achieving precise positioning of the triangular rubber strip during conveying. Here, "inner side" refers to one side of the thick side of the triangular rubber strip as the inner side and the other side as the outer side.

[0054] In a preferred embodiment of the present invention, an online correction component 14 is provided on one side of the feeding end of the synchronous conveying component 2. The online correction component 14 includes a frame fixed to the wall panel, and a camera is fixedly connected to the frame. The camera is used to acquire the position information of the triangular adhesive on the synchronous conveyor belt. The camera is connected to a PLC controller (not shown in the figure) via a wire. The PLC controller is also communicatively connected to the axial movement component 6. After acquiring the position information data of the triangular adhesive on the synchronous conveyor belt 204 at intervals through the CCD lens, the data is transmitted to the PLC controller. During the triangular adhesive bonding process, since the position information of the triangular adhesive to be bonded is already known, the axial movement component 6 is controlled to drive the axial movement of the bonding drum main unit 7, thereby driving the bonding drum 8 to move axially, ensuring that the position of the triangular adhesive bonded to the bonding drum 8 remains consistent at all times, thereby improving the flatness of the triangular adhesive bonding. Preferably, a light source is fixed on the frame to illuminate the environment and increase the contrast when taking pictures.

[0055] In a preferred embodiment of the present invention, the cutting component 3 is fixed on the synchronous conveyor belt frame 201. When the bonding drum 8 winds the triangular rubber strip to the end, the bonding drum 8 and the synchronous conveyor belt 204 stop operating simultaneously, and the cutting blade in the cutting component 3 cuts the triangular rubber strip to the length set in the formula. In this embodiment of the present invention, the cutting component 3 adopts a prior art structure, which will not be described in detail here.

[0056] The multilayer sheet pressure roller assembly 4 consists of multiple multilayer sheets, each driven by a separate cylinder, which can adapt to the different thicknesses on the left and right sides of the triangular rubber strip product.

[0057] In a preferred embodiment of the present invention, in order to realize the dynamic online correction function of triangular adhesive bonding and wrapping, the bonding drum main unit 7 and the fixed base 5 are connected by an axial moving component 6, so that the bonding drum main unit 7 can move along the axis of the bonding drum, which greatly improves the flatness of the entire triangular adhesive bonding.

[0058] like Figure 6 As shown, the axial movement component 6 includes two parallel third linear guide rails 601 and a lateral movement power component 602. The third linear guide rails 601 are fixed to the top of the fixed base 5. Two sliders are fixed to the lower end face of the bonding drum main unit 7. The two sliders are slidably connected to the two third linear guide rails 601 respectively, so that the bonding drum main unit 7 can move along the third linear guide rails 601 on the fixed base 5. The lateral movement power component 602 includes a servo motor and a ball screw fixed on the fixed base 5. The output shaft of the servo motor is connected to one end of the ball screw through a coupling. The nut of the ball screw is fixedly connected to the bonding drum main unit 7. When the servo motor rotates, it drives the ball screw to rotate, driving the nut of the ball screw to move along the axial direction of the screw, thereby driving the bonding drum main unit 7 to move.

[0059] Preferably, the servo motor is fixed to the fixed base 5 via a motor mounting bracket, and the ball screw is fixed to the fixed base 5 via a bearing and a mounting bracket. Preferably, the servo motor is connected to the PLC controller via communication, and the PLC controller controls the servo motor, thereby controlling the axial movement of the mating drum main unit 7.

[0060] Preferably, the central axis of the ball screw is parallel to the central axis of the third linear guide 601 and the bonding drum 8, so that the bonding drum main unit 7 and the bonding drum 8 can move along the axial direction of the bonding drum, realizing the dynamic correction function of triangular glue bonding and winding, so as to improve the flatness of the whole circle bonding of the triangular glue.

[0061] In this embodiment of the invention, the bonding drum 2 is a bonding drum with an automatically adjustable drum diameter, for example, see the bonding drum structure in Chinese Patent Publication CN119928328A.

[0062] This invention also provides a method for forming a triangular rubber bead, comprising:

[0063] The triangular rubber strips conveyed from the storage device are limited by the left and right rollers of the feeding roller assembly 13, and then conveyed to the upper surface of the synchronous conveyor belt 204 of the synchronous conveyor assembly 2. Since the discharge end of the synchronous conveyor assembly 2 is located directly above the center of the bonding drum 8, and the distance between the two is less than 50mm, no additional power is needed to pull the head and tail of the triangular rubber strips during the process of conveying the triangular rubber strips to the bonding drum 8 via the synchronous conveyor belt 204. This avoids the uneven tensile force on the head, middle and tail parts of the triangular rubber strips during the entire winding process, which would result in inconsistent stretching deformation of the entire triangular rubber strip and ultimately change in the width of the head, middle and tail of the bonded triangular rubber strips.

[0064] During the conveying process of the triangular rubber strip on the synchronous conveyor belt 204 of the synchronous conveyor assembly 2, the pressure roller assembly 12 presses the triangular rubber strip firmly onto the synchronous conveyor belt 204 to avoid insufficient friction between the triangular rubber strip and the synchronous conveyor belt 204, which would cause uneven deformation of its own thick and thin edges and lead to serpentine deformation and displacement of the position of the triangular rubber strip. Furthermore, in order to avoid serpentine deformation at the head and tail of the triangular rubber strip, when the triangular rubber strip is conveyed to the vicinity of the cutting assembly 3, the side pressure roller assembly 11, driven by the cylinder, constantly squeezes the thick edge of the triangular strip against the sub-mouth stop roller of the front stop roller assembly 9 to keep the head and tail of the triangular rubber strip in the same position.

[0065] When the head of the triangular rubber strip exits the synchronous conveyor belt 204 of the synchronous conveyor assembly 2, it immediately falls onto the upper surface of the bonding drum 8. Vacuum adsorption adheres the head of the triangular rubber strip to the bonding drum 8, while the multi-layer sheet pressure roller assembly 4 presses the triangular rubber strip firmly onto the bonding drum 8. By controlling the synchronous rotation of the servo motor of the bonding drum 8 and the drive motor 205 of the synchronous conveyor assembly, the position of the triangular rubber strip is synchronized during the process of being conveyed from the synchronous conveyor assembly 2 to the bonding drum 8, avoiding stretching and deformation of the triangular rubber strip. This avoids the excessive overlap between the head and tail of the triangular rubber strip caused by inaccurate length in existing technologies. When the bonding drum 8 winds the triangular rubber strip to the tail, both the bonding drum 8 and the synchronous conveyor assembly 2 stop operating simultaneously. The cutting assembly 3 cuts the triangular rubber strip to the length set in the formula. Because the multi-layer sheet pressure roller constantly presses the triangular rubber strip product, the tail length of the cut triangular rubber strip product is consistent. The strip is very short, avoiding the serpentine deformation caused by a long tail after cutting, which would lead to significant misalignment between the head and tail during bonding. The bonding drum 8 and the synchronous conveying component 2 start synchronously and continue to rotate until the triangular rubber strip is wrapped around the bonding drum completely. When the head and tail of the triangular rubber strip overlaps with the multi-layer sheet pressure roller, the winding speed of the bonding drum 8 decreases. Different high pressures are applied to different multi-layer sheets of the multi-layer sheet pressure roller through the proportional valve, ultimately achieving high joint accuracy and centering accuracy when the head and tail of the triangular rubber strip overlap. Finally, the triangular rubber strip semi-finished product is wrapped around the bonding drum 8 to form a complete triangular rubber strip. After the triangular rubber strip is wrapped, the synchronous conveying component 2 is raised to a certain height under the action of the lifting power component 103. The triangular rubber strip is then flipped up on the bonding drum 8 and bonded to the steel wire ring of the locking block at the end of the bonding drum, thus bonding the triangular rubber strip and the steel wire ring together to form a triangular rubber tire bead product.

[0066] One side of the feeding end of the synchronous conveying component 2 is equipped with an online correction component 14. The camera of the online correction component 14 records the position of the triangular rubber strip on the synchronous conveyor belt 204 in real time. When the triangular rubber strip is wound around the bonding drum 8, in order to maintain the flatness of the entire circle of the triangular rubber strip, the position data of the triangular rubber strip recorded by the online correction component is fed back to the PLC controller. The PLC controller controls the axial lateral movement component 6 to drive the dynamic axial movement of the bonding drum according to the received position data, so as to greatly improve the flatness of the entire circle of the triangular rubber strip. For example, when the triangular rubber strip is wound around the bonding drum, if a certain position in the middle is deviated to the left, when the bonding drum is wound to that position, the axial movement component drives the bonding drum to move to the left by the offset amount. After winding past that position, the axial movement component drives the bonding drum to move to the right back to the correct position, thereby ensuring that the thick edge of the triangular rubber strip is on the same plane throughout the entire circle during the winding process, avoiding misalignment between the triangular rubber strips due to serpentine deformation, and preventing defects such as partial leakage and air bubbles when the triangular rubber strip is flipped and bonded to the wire ring.

[0067] The method of this invention realizes fully automated production of triangular rubber bead products, improves equipment production efficiency, increases the cycle time of a single tire from about 10 seconds to 7 seconds, and also improves the production precision of triangular rubber bead products.

[0068] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0069] In the description of this invention, unless otherwise stated, the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0070] The above technical solution is only one embodiment of the present invention. For those skilled in the art, based on the principles disclosed in the present invention, it is easy to make various types of improvements or modifications, and not limited to the technical solutions described in the specific embodiments of the present invention. Therefore, the foregoing description is only a preferred option and is not restrictive.

Claims

1. A triangular rubber bead forming device, characterized in that, include: A servo feeding device includes a servo feeding frame, a synchronous conveying component on the servo feeding frame, a cutting component on the synchronous conveying component, and a multi-layer sheet pressure roller component at the discharge end of the synchronous conveying component. The bonding drum device includes a fixed base fixed to the ground, a bonding drum main unit box slidably connected to the fixed base via an axial moving component, a bonding drum connected to the bonding drum main unit box, and the discharge end of the synchronous conveying component located directly above the center of the bonding drum.

2. The apparatus according to claim 1, characterized in that, The distance between the discharge end of the synchronous conveying component and the top of the bonding drum is less than 50mm.

3. The apparatus according to claim 1, characterized in that, The servo feeder includes a feeder base, a lifting bracket slidably connected to the feeder base, and a lifting power assembly for driving the lifting bracket to rise and fall. The feeding base is fixed with two opposing sides with first sliders respectively; the lifting bracket includes two lifting plates arranged opposite each other, the two lifting plates are provided with vertical elongated through holes, the two long sides of the elongated through holes are provided with first linear guides, and the first linear guides and the first sliders are slidably connected. The lifting power assembly includes a first servo motor and a first ball screw fixed on the feeding base. The first ball screw is vertically arranged. The output shaft of the first servo motor is connected to one end of the first ball screw via a coupling. The nut of the first ball screw is connected to the lifting bracket via a nut mounting seat.

4. The apparatus according to claim 3, characterized in that, The synchronous conveying assembly includes a synchronous conveyor belt frame, which includes a fixed plate fixed to the top of the lifting support. Two wall plates are arranged opposite each other on the fixed plate, and a drive pulley and a driven pulley are provided between the two wall plates. The drive pulley and the driven pulley are connected by a synchronous conveyor belt. A drive motor is fixed on one of the wall plates by a motor mounting bracket, and the output end of the drive motor is connected to the drive pulley by a belt pulley.

5. The apparatus according to claim 4, characterized in that, The synchronous conveying assembly is provided with a front stop wheel assembly, a rear stop wheel assembly and a side pressure wheel assembly. The front stop wheel assembly and the rear stop wheel assembly are fixed on one of the wall plates and are located at the discharge end and the feed end of the synchronous conveyor belt, respectively. The side pressure wheel assembly is provided on the other wall plate and is arranged opposite to the front stop wheel assembly.

6. The apparatus according to claim 5, characterized in that, The side pressure roller assembly includes a slider inclined plate fixed to the wall panel. Two parallel second linear guide rails are slidably connected to the slider inclined plate. A first cylinder is disposed between the two second linear guide rails. The cylinder body of the first cylinder is fixedly mounted on the slider inclined plate, and the piston rod of the first cylinder is parallel to the second linear guide rails. The ends of the two second linear guide rails and the piston rod of the first cylinder are all fixedly connected to a mounting plate. Multiple side pressure rollers are mounted on the mounting plate.

7. The apparatus according to claim 4, characterized in that, The synchronous conveyor belt frame is equipped with at least one pressure roller assembly. The pressure roller assembly includes an L-shaped bracket, which includes a vertical fixing plate and a horizontal connecting plate fixedly connected to the vertical fixing plate. The vertical fixing plate is fixed to one of the wall panels. A rotating mounting plate is rotatably connected to the horizontal connecting plate. A second cylinder is fixedly mounted on the rotating mounting plate. The piston rod of the second cylinder points vertically downward. The end of the piston rod of the second cylinder is fixedly connected to the L-shaped pressure roller mounting plate. The pressure roller mounting plate is connected to the pressure roller via a pressure roller shaft.

8. The apparatus according to claim 4, characterized in that, The synchronous conveying assembly has an online correction component on one side of the feed end. The online correction component includes a frame fixed to the wall panel, and a CCD lens is fixedly connected to the frame. The CCD lens is used to acquire the position information of the triangular rubber on the synchronous conveyor belt. The CCD lens is connected to the PLC controller through a wire, and the PLC controller is also communicatively connected to the axial movement assembly.

9. The apparatus according to claim 1, characterized in that, The axial movement assembly includes two parallel third linear guides and a lateral movement power assembly. The third linear guide rail is fixed to the top of the fixed base, and two sliders are fixed on the lower end surface of the fitting drum main body box. The two sliders are slidably connected to the two third linear guide rails respectively. The lateral movement power assembly includes a servo motor and a ball screw fixed on the fixed base. The output shaft of the servo motor is connected to one end of the ball screw via a coupling. The nut of the ball screw is fixedly connected to the main housing of the fitting drum.

10. A method for forming a triangular rubber bead, characterized in that, The bead forming is achieved using the triangular rubber bead forming apparatus as described in any one of claims 1-9, the method comprising: The triangular rubber strips from the storage device are conveyed to the upper surface of the synchronous conveyor belt. As soon as the head of the triangular rubber strip exits the synchronous conveyor belt, it falls onto the upper surface of the bonding drum. Vacuum adsorption holds the head of the triangular rubber strip onto the bonding drum, while the multi-layer sheet pressure roller assembly presses the triangular rubber strip firmly onto the bonding drum. The synchronous rotation of the bonding drum and the synchronous conveyor assembly is controlled to ensure that the position of the triangular rubber strip is synchronized during the process of being conveyed from the synchronous conveyor assembly to the bonding drum, preventing stretching and deformation of the triangular rubber strip. During the process of the triangular rubber strip winding onto the bonding drum, the position data of the triangular rubber strip is fed back in real time through a CCD lens. The axial movement component drives the bonding drum to dynamically move axially, achieving real-time correction of the triangular rubber strip during the winding and bonding process. The bonding drum winds the triangular rubber strip... At the tail end, the bonding drum and synchronous conveyor assembly stop operating simultaneously. The cutting assembly cuts the triangular rubber strip to the length set in the formula. The bonding drum and synchronous conveyor assembly start synchronously and continue to rotate until the triangular rubber strip is wrapped around the bonding drum completely. When the head and tail of the triangular rubber strip overlaps at the multi-layer sheet pressure roller assembly, the winding speed of the bonding drum decreases. The pressure of each multi-layer sheet in the multi-layer sheet pressure roller assembly is adjusted to achieve high joint accuracy and centering accuracy when the head and tail of the triangular rubber strip overlap. After the triangular rubber strip is wound, the synchronous conveyor assembly is raised to a certain height under the action of the lifting power assembly. The triangular rubber strip is flipped up on the bonding drum and then attached to the steel wire ring of the locking block at the end of the bonding drum, thus bonding the triangular rubber strip and the steel wire ring together to form a triangular rubber tire bead product.

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