Compound feeding system and compound feeding method

Abstract

The application discloses a rubber material feeding system and method, and relates to the technical field of tire production. The technical scheme points of the application comprise: a lamination feeding support, which comprises a conveying support and a feeding support fixedly arranged above the conveying support; a conveying mechanism borne on the conveying support, which is used for receiving rubber material from a main feeding device and conveying the rubber material; a compression roller mechanism borne on the feeding support, which is used for rolling and laminating the rubber material; the lamination feeding device further comprises: a feeding mechanism borne on the feeding support; the feeding mechanism is used for feeding the head and tail of the rubber material on the conveying mechanism to a forming drum respectively, so as to complete the head-tail joint of the rubber material on the forming drum. The application can avoid the occurrence of a gap at a joint after lamination of the rubber material, thereby improving the lamination quality and the lamination efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tire production, more particularly, it relates to a rubber material feeding system and a rubber material feeding method. BACKGROUND

[0002] The existing Chinese patent with the authorization announcement number CN202378301U discloses a four-drum type full steel radial tire one-time forming machine tire shoulder pad rubber feeding device, which comprises a tire shoulder pad rubber guide opening device, a rack, a feeding device fixedly arranged on one side of the rack close to the guide opening device, and a tire shoulder pad rubber attaching device arranged on one side of the rack close to a forming drum and movable relative to the rack. The rack comprises a stand column and a top beam, the top beam extends forward to above the forming drum, a straight guide rail with a downwardly inclined front end is fixedly arranged below the top beam in a suspended manner, and the tire shoulder pad rubber attaching device is arranged below the straight guide rail through a sliding block structure. The tire shoulder pad rubber attaching device comprises a base plate, a second feeding plate, a pushing cylinder, a driving roller, a driven roller, a length measuring component, and a tire shoulder pad rubber attaching head. The tire shoulder pad rubber attaching head comprises a front base plate, a guide roller, and a pressing component, and the pressing component comprises a pressing cylinder, a folding arm, and a pressing wheel.

[0003] However, the tire shoulder pad rubber feeding device disclosed in the above patent has the following problems: 1. The end of the front base plate is located on one side of the forming drum and forms a certain distance with the forming drum. During the process of conveying the tire shoulder pad rubber to the forming drum, the head and tail of the rubber material will be in a certain length of unconstrained state. At the same time, due to the characteristics of the pad rubber, such as softness, poor adhesion, easy deformation, and easy stretching, the tire shoulder pad rubber is easily attached to the forming drum, and the joint cannot be completely connected, that is, there is a gap between the head and the tail of the rubber material, which needs to be reattached, thereby affecting the forming efficiency of the tire blank; 2. The tire shoulder pad rubber attaching device is in sliding cooperation with the straight guide rail, and the whole tire shoulder pad rubber attaching device is driven to move by the pushing cylinder, which leads to a relatively complex overall structure of the device, a large assembly difficulty, and a high cost. SUMMARY

[0004] In view of the deficiencies of the prior art, one of the purposes of the present application is to provide a rubber material feeding system which can improve the attaching quality and efficiency of the rubber material, and has a simple structure and low cost.

[0005] To achieve the above-mentioned purposes, the present application provides the following technical solutions:

[0006] A rubber material feeding system for a tire forming machine, the tire forming machine comprising a forming drum for forming a tire blank, the rubber material feeding system being configured to feed rubber material required for forming a tire blank to the forming drum; the rubber material feeding system comprising a main feeding device, and an attaching feeding device located at an end of the main feeding device;

[0007] The attaching feeding device comprises:

[0008] A bonding feeding bracket, the bonding feeding bracket including a conveying bracket and a delivery bracket fixedly disposed above the conveying bracket;

[0009] The conveying mechanism, supported on the conveying bracket, is used to receive and convey the adhesive material from the main feeding device.

[0010] The pressure roller mechanism, supported on the material delivery bracket, is used to roll and bond the adhesive material; and,

[0011] A feeding mechanism supported on the feeding bracket;

[0012] The feeding mechanism is used to deliver the head and tail of the rubber material on the conveying mechanism to the forming drum, so as to complete the joint of the head and tail of the rubber material on the forming drum.

[0013] Furthermore, the feeding mechanism includes a gripping component for gripping the adhesive material and a composite driving component for driving the gripping component to move.

[0014] Furthermore, the gripping assembly includes a gripping member, a driving member, and a stopping member. The driving member is used to control the gripping member to grip the adhesive material, and the stopping member is used to press against the adhesive material when the gripping member releases the adhesive material.

[0015] Furthermore, the stop member is fixedly disposed relative to the drive member and extends below the gripper member, and the stop member is provided with a through hole, through which the gripper member grips the adhesive material;

[0016] Furthermore, the composite drive component includes:

[0017] A first drive assembly disposed on the delivery bracket for driving the gripping assembly to deliver adhesive material;

[0018] A second drive component is disposed on the first drive component and is used to drive the gripping component to grip the adhesive material.

[0019] Further, the first driving component includes:

[0020] A first slide block is slidably connected to the material delivery bracket;

[0021] A first driver, disposed on the material delivery bracket, is used to drive the first slide to reciprocate along a first direction, the first direction being the same as the delivery direction of the adhesive material.

[0022] Furthermore, the second driving component includes:

[0023] A second slide block is slidably connected to the first slide block;

[0024] A second driver is disposed on the first slide block and is used to drive the second slide block to reciprocate along the second direction;

[0025] The gripping component is disposed on the second slide, and the second direction is the same as the gripping direction of the gripping component.

[0026] Furthermore, the second direction is perpendicular to the first direction.

[0027] Furthermore, the main feeding device includes a cutting mechanism and a first fixed-length detection mechanism that cooperates with the cutting mechanism.

[0028] Furthermore, the conveying support of the bonding feeding device is provided with a second fixed-length detection mechanism that cooperates with the feeding mechanism.

[0029] Furthermore, the second fixed-length detection mechanism includes a through-beam fiber optic sensor, and the conveying mechanism includes a light-transmitting conveyor belt, with the transmitting end and receiving end of the through-beam fiber optic sensor respectively arranged on the upper and lower sides of the conveyor belt.

[0030] Furthermore, the main feeding device includes a main feeding frame, and a deflection shaft is provided between the bonding feeding bracket and the main feeding frame; the bonding feeding bracket has a bonding position away from the forming drum and a bonding position close to the forming drum; the bonding feeding bracket can deflect around the deflection shaft between the bonding position and the bonding position.

[0031] Furthermore, the adhesive feeding system also includes a deflection drive mechanism, which is used to drive the bonding feeding bracket to deflect around the deflection axis.

[0032] Furthermore, a centering mechanism is provided at one end of the conveying bracket near the molding drum. The centering mechanism is used to receive the rubber material from the conveying mechanism and maintain the position of the rubber material during the delivery of the rubber material to the molding drum.

[0033] Furthermore, the centering mechanism includes two parallel guide plates, each with multiple side guide rollers, and multiple support rollers between the two guide plates. The two guide plates and the multiple support rollers cooperate to form a guide channel that cooperates with the rubber material.

[0034] In view of the shortcomings of the existing technology, another objective of the present invention is to provide a method for feeding adhesive materials, which can avoid gaps at the joint after the adhesive materials are bonded, thereby improving the bonding quality and bonding efficiency.

[0035] To achieve the above objectives, the present invention provides the following technical solution:

[0036] A method for feeding rubber compound based on the above-mentioned rubber compound feeding system, the method comprising:

[0037] Step 1: The bonding feeding device receives the adhesive material from the main feeding device and continues to convey the adhesive material to the molding drum through the conveying mechanism;

[0038] Step 2: When the conveying mechanism delivers the head of the rubber material to the initial position of the feeding mechanism, the feeding mechanism grabs the head of the rubber material and delivers it toward the molding drum;

[0039] Step 3: When the tip of the adhesive material reaches the forming drum, the feeding mechanism releases the adhesive material and returns to its initial position. At the same time, the forming drum rotates, and the adhesive material is sequentially bonded along the bonding circumference of the forming drum.

[0040] Step 4: When the conveying mechanism delivers the tail of the rubber material to the initial position of the feeding mechanism, the feeding mechanism grabs the tail of the rubber material and delivers it toward the molding drum;

[0041] Step 5: When the tail of the rubber material reaches the forming drum, the feeding mechanism releases the rubber material and returns to its initial position. At this time, the tail of the rubber material engages with the head of the rubber material, and the feeding is completed.

[0042] Furthermore, in steps three to five, during the bonding of the adhesive materials, the pressure roller mechanism continuously rolls the adhesive materials on the forming drum.

[0043] Furthermore, in step two, during the process of the feeding mechanism grabbing the head of the rubber material and delivering it toward the molding drum, the feeding speed of the feeding mechanism is the same as the conveying speed of the conveying mechanism.

[0044] In step three, during the process of the adhesive material being sequentially applied along the bonding circumferential surface of the molding drum, the rotational linear velocity of the bonding circumferential surface of the molding drum is the same as the conveying speed of the conveying mechanism.

[0045] In step four, during the process of the feeding mechanism grabbing the tail of the rubber material and delivering it toward the molding drum, the feeding speed of the feeding mechanism may be the same as or different from the rotational linear speed of the mating circumferential surface of the molding drum.

[0046] Furthermore, in step four, the theoretical length of the adhesive material is L, the actual length of the adhesive material is L', the delivery speed of the feeding mechanism is V, and the rotational linear velocity of the contact circumference of the forming drum is V'.

[0047] When L' < L, V < V'; when L' ≥ L, V = V'.

[0048] Furthermore, in step four, let the length of the unattached adhesive material on the bonding circumference of the molding drum be L1, the remaining length of the adhesive material not attached to the molding drum be L1', the delivery speed of the feeding mechanism be V, and the rotational linear velocity of the bonding circumference of the molding drum be V'.

[0049] When L1' < L1, V < V'; when L1' ≥ L1, V = V'.

[0050] In summary, the present invention has the following beneficial effects:

[0051] 1. Using a feeding mechanism to deliver the head and tail of the material separately can avoid the unrestrained state of the head and tail of the material, which helps to avoid gaps at the joint of the head and tail of the material, thereby improving the bonding quality and bonding efficiency.

[0052] 2. A feeding mechanism is used to grab the material tail and deliver it. If it is predicted that there will be a gap after bonding based on the length, the adhesive can be stretched during the conveying process to avoid gaps at the joint, thereby improving the bonding quality.

[0053] 3. By hinged the bonding feeding bracket and using the deflection drive mechanism for deflection, the structure of the bonding feeding device can be simplified, making assembly and maintenance easier. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the rubber material supply system in Example 1;

[0055] Figure 2 This is a schematic diagram of the bonding feeding device in Example 1;

[0056] Figure 3 This is a schematic diagram of the gripping component in Example 1;

[0057] Figure 4 This is a schematic diagram of the fixed-length detection mechanism in Example 1. Figure 1 ;

[0058] Figure 5 This is a schematic diagram of the fixed-length detection mechanism in Example 1. Figure 2 ;

[0059] Figure 6 This is a schematic diagram of the feeding end centering mechanism in Example 1;

[0060] Figure 7 This is a partial structural diagram of the main feeding device in Example 1. Figure 1 ;

[0061] Figure 8 This is a schematic diagram of the centering mechanism at the feeding end in Example 1;

[0062] Figure 9 This is a schematic diagram of the correction mechanism in Example 1;

[0063] Figure 10 This is a partial structural diagram of the main feeding device in Example 1. Figure 2 ;

[0064] Figure 11 This is a partial structural diagram of the main feeding device in Example 1. Figure 3 ;

[0065] Figure 12 This is a flowchart illustrating the rubber material feeding method in Example 2.

[0066] In the diagram: 1. Main feeding frame; 211. Conveying support; 212. Feeding support; 213. Fixed support rod; 22. Conveying mechanism; 23. Feeding end centering mechanism; 231. Guide plate; 2311. Clearance hole; 2312. Guide plate extension; 232. Support roller; 2321. Nut; 233. Side guide roller; 234. First guide rod sliding sleeve assembly; 2351. First lead screw; 2352. First rocker wheel; 2361. Second lead screw; 2362. Second rocker wheel; 24. 1. First driver; 242. First movable seat; 243. Second driver; 244. Second movable seat; 245. Gripping cylinder; 246. Nail plate; 2461. Spiked nail; 247. Partition plate; 248. Auxiliary support plate; 251. Pressure roller; 252. Pressure roller drive assembly; 26. Deflection drive mechanism; 3. Fixed length detection mechanism; 31. Support cross plate; 32. Slider assembly; 33. Sensor mounting base; 34. Through-beam fiber optic sensor; 351. Shaft seat; 352. Wheel axle 353. Pulley; 354. Drive belt; 355. Fixing plate; 356. Adjusting handwheel; 357. Counter; 4. Feeding end centering mechanism; 41. Fixed side plate; 42. Positioning plate; 43. Limiting roller; 44. Inner guide roller; 45. Outer guide roller; 46. Second guide rod sliding sleeve assembly; 471. Third lead screw; 472. Third rocker wheel; 481. Fourth lead screw; 482. Fourth rocker wheel; 5. Correction mechanism; 51. Correction photoelectric sensor; 52. Positioning shaft; 53. Correction roller 54. Drive unit; 551. First connecting frame; 552. Second connecting frame; 6. Cutting mechanism; 61. Cutting board; 62. Cutting knife; 71. First conveying device; 72. Second conveying device; 811. Overlap detection roller; 812. Overlap detection sensor; 821. Unloading detection roller; 822. Unloading detection sensor; 831. Fixed bracket; 832. Conveyor roller; 833. Tilting drive unit; 834. Conveyor roller; 84. Brush roller; 9. Forming drum. Detailed Implementation

[0067] The present invention will be further described in detail below with reference to the accompanying drawings.

[0068] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0069] Example 1:

[0070] A rubber compound feeding system, such as Figures 1 to 11 As shown, this is used in a tire forming machine, which includes a forming drum 9 for forming a tire blank. A rubber supply system is used to supply the rubber required for forming the tire blank to the forming drum 9. In this embodiment, the rubber is a shoulder pad rubber, which is a small rubber strip placed on top of the carcass ply layer and below the edge of the belt layer. Sometimes it is a shaped rubber strip, generally a strip with a triangular cross-section, used to keep the belt layer flat and isolate the edges of the carcass layer and the belt layer, making the connection curvature between the tire shoulder and the sidewall relatively gentle, and transferring and absorbing stress concentrated on the tire shoulder under dynamic conditions. It should be noted that when the rubber supply system supplies rubber to the forming drum 9, a formed tire carcass assembly is already placed on the forming drum 9; of course, in other optional embodiments, the rubber can also be rubber directly bonded to the forming drum to form the tire carcass assembly, which is not limited here. Specifically, the rubber supply system includes a main feeding device and a bonding feeding device located at the end of the main feeding device. The bonding feeding device includes a bonding feeding bracket, a conveying mechanism 22, a pressure roller mechanism, and a feeding mechanism. The bonding feeding bracket includes a conveying bracket 211 and a feeding bracket 212 fixedly mounted above the conveying bracket 211. The conveying mechanism 22 is mounted on the conveying bracket 211 and is used to receive and convey the adhesive material from the main feeding device. The pressure roller mechanism is mounted on the feeding bracket 212 and is used to roll the bonding adhesive material. The feeding mechanism is mounted on the feeding bracket 212 and is used to deliver the beginning and end of the adhesive material from the conveying mechanism 22 to the forming drum 9, respectively, to complete the bonding of the adhesive material on the forming drum 9. Since the adhesive material in this embodiment is relatively soft, especially the tire shoulder pad adhesive, it is easily twisted or deformed due to mechanical vibration during the bonding process to the molding drum. Therefore, in this embodiment, a feeding mechanism and a conveying mechanism 22 are used in conjunction to transport the adhesive material during bonding. The conveying mechanism 22 is used for transporting the adhesive material during bonding, while the feeding mechanism is used to deliver the head and tail of the material separately. This avoids the unconstrained state of the head and tail of the material, prevents twisting and deformation, and can also stretch and correct the shortened adhesive material, which helps to avoid gaps at the joint between the head and tail of the material, thereby improving bonding quality and bonding efficiency. Of course, in other optional embodiments, the feeding mechanism can also be used only to deliver the tail of the adhesive material, and then stretch and correct the adhesive material to avoid gaps at the joint between the head and tail of the material. This is not a limitation.

[0071] like Figure 2 As shown, in this embodiment, multiple fixed support rods 213 are provided between the conveying bracket 211 and the material delivery bracket 212, so that the conveying bracket 211 and the material delivery bracket 212 are connected and arranged in parallel, thereby facilitating the arrangement of the conveying mechanism 22 and the material delivery mechanism. In this embodiment, the pressure roller mechanism is pivotally connected to the material delivery bracket 212. Specifically, the pressure roller mechanism includes a pressure roller drive assembly 252 disposed below and connected to the material delivery bracket 212, and a pressure roller 251 connected to the pressure roller drive assembly 252. The pressure roller drive assembly 252 can control the pressure roller 251 to reciprocate along a linear direction. The pressure roller 251 is used to press the adhesive material adhered to the molding drum 9 to ensure that the adhesive material is tightly adhered to the molding drum 9.

[0072] like Figures 1 to 3As shown, in this embodiment, the feeding mechanism includes a gripping assembly for gripping adhesive material and a composite driving assembly for driving the gripper assembly to move. The gripping assembly includes a gripping member, a driving member, and a stop member. The driving member controls the gripping member to grip the adhesive material, and the stop member presses against the adhesive material when the gripping member releases it. The stop member is fixedly disposed relative to the driving member and extends below the gripping member. The stop member has a through hole through which the gripping member grips the adhesive material. Specifically, the gripping member includes a nail plate 246 and spikes 2461 disposed on the bottom wall of the nail plate 246. The stop member includes a partition 247 with a through hole through which the spikes 2461 grip the adhesive material. The driving member includes a gripping cylinder 245 connected to the nail plate 246. The partition 247 is disposed below the top plate 246, and the spikes 2461 are disposed on the bottom surface of the nail plate 246 and can pass through the partition 247. When the gripping component needs to grip the adhesive material, the composite drive component can drive the gripping component to move towards the adhesive material. After the partition 247 contacts the surface of the adhesive material, the gripping cylinder 245 controls the nail plate 246 to move downwards, causing the spikes to pass through the through-holes in the partition 247 and embed into the adhesive material, thus achieving gripping of the adhesive material. When the gripping cylinder 245 controls the nail plate 246 to move upwards, the adhesive material, limited by the partition 247, will not move with the spikes, thereby facilitating the separation of the spikes from the adhesive material. Preferably, in this embodiment, the bottom wall of the nail plate 246 is provided with a group of spikes arranged in a figure-eight pattern, the group of spikes including multiple spikes; when the figure-eight patterned spike group is embedded in the adhesive material, the gripping component can prevent the adhesive material from separating from the spikes when moving upwards, that is, it helps to improve the stability of the connection between the spikes and the adhesive material. Of course, in other optional embodiments, spiral spikes can also be screwed into the adhesive material to improve the stability of the connection, which is not limited here. The surface of the adhesive material is irregular, so spikes are embedded in the material to achieve the gripping action, which helps to improve the stability of the grip. The partition 247 facilitates the separation of the spikes from the adhesive material and also facilitates the application of pressure to the adhesive material, that is, pressing the adhesive material onto the molding drum. Of course, in other optional embodiments, vacuum adsorption or other methods can also be used to grip the adhesive material, which is not limited here.

[0073] like Figures 1 to 3As shown, the composite drive assembly includes a first drive assembly and a second drive assembly. The first drive assembly is disposed on the delivery bracket 212 and is used to drive the gripping assembly to deliver the adhesive material. The second drive assembly is disposed on the first drive assembly and is used to drive the gripping assembly to grip the adhesive material. The first drive assembly includes a first slide 242 slidably connected to the delivery bracket 212, and a first driver 241 disposed on the delivery bracket 212 for driving the first slide 242 to reciprocate along a first direction, wherein the first direction is the same as the adhesive delivery direction. The second drive assembly includes a second slide 244 slidably connected to the first slide 242, and a second driver 243 disposed on the first slide 242 for driving the second slide 244 to reciprocate along a second direction. The gripping assembly is disposed on the second slide 244, and the second direction is the same as the gripping direction of the gripping assembly. In this embodiment, the second direction is perpendicular to the first direction. Figure 3 As shown, the gripping cylinder 245 of the gripping component is mounted on the auxiliary support plate 248 on the bottom wall of the second movable seat 244, and the partition plate 247 is connected to the auxiliary support plate 248. Specifically, the partition plate 247 and the auxiliary support plate 248 are integrally formed and are U-shaped for easy installation. The driving direction of the first driver 241 is the same as the conveying direction of the conveying mechanism 22, and the driving direction of the second driver 243 is perpendicular to the driving direction of the first driver 241. In this embodiment, the first driver 241 is a motor drive component, and the first movable seat 242 is slidably connected to the lower part of the feeding bracket 212. The first driver 241 can drive the first movable seat 242 to move in a straight line. The second driver 243 is a cylinder drive component, and the second movable seat 244 is slidably connected to the first movable seat 242. The second driver 243 can drive the second movable seat 244 to move in a straight line.

[0074] like Figures 1 to 3As shown, the feeding mechanism gripping and delivering the rubber material to the forming drum includes two stages: sequentially delivering the rubber material head and the rubber material tail. The steps of the feeding mechanism delivering the rubber material to the forming drum include: First, the first driver 241 drives the gripping assembly to move a certain distance to directly above the rubber material head, and the second driver 243 drives the gripping assembly to move downwards a certain distance until it contacts the rubber material. The gripping cylinder 245 controls the nail plate 246 to move downwards and embed into the rubber material, thus gripping the rubber material. Second, the second driver 243 controls the gripping assembly to move upwards, causing the material head to leave the surface of the conveying mechanism 22. The first driver 241 and the conveying mechanism 22 simultaneously convey until the rubber material head is delivered to the forming drum 9. Then, the conveying mechanism 22 stops conveying, and the second driver 243 controls the gripping assembly to move downwards to press the material head onto the forming drum. Then, the gripping cylinder 245, the second driver 243, and the first driver 241 reset. Next, the forming drum 9 rotates to receive the rubber material, and the pressure roller... The mechanism is used to roll the rubber material, and the conveying mechanism 22 cooperates to convey it forward to achieve continuous bonding of the rubber material to the forming drum. During the process of bonding the rubber material to the forming drum 9, when the tail of the rubber material moves directly below the gripping component, the conveying mechanism 22 stops conveying, and then the gripping component moves downward to grip the tail of the material, so that the tail of the material separates from the conveying mechanism 22. Then, the first driver 241, the pressure roller mechanism, and the forming drum 9 cooperate to perform bonding of the remaining part of the rubber material. Finally, when the tail of the rubber material is conveyed to the forming drum 9, the second driver 243 controls the gripping component to move downward to press the tail of the material onto the forming drum. Then, the feeding mechanism resets, and the pressure roller mechanism cooperates with the forming drum to continue pressing to improve the stability of the bonding. Of course, in other optional embodiments, when the gripping component grips the head or tail of the material, it can also keep the head or tail of the material in contact with the conveying mechanism, which is not limited here.

[0075] like Figures 1 to 3 and Figure 6 As shown, two strips of adhesive material are attached to the molding drum, arranged side by side along the axial direction of the body assembly on the molding drum 9. Correspondingly, there are two gripping components, namely two gripping cylinders 245, which are arranged side by side on the bottom wall of the second moving seat 244. The second moving seat 244 is provided with an opening and closing adjustment mechanism (not shown in the figure) for adjusting the distance between the two gripping cylinders 245. The opening and closing adjustment mechanism is preferably a screw and nut pair that cooperates with the slide rail assembly. The specific structure is not specifically limited in this embodiment. Similarly, there are also two pressure roller drive components 252. The material feeding bracket 212 is provided with an opening and closing drive mechanism (not shown in the figure) for adjusting the distance between the two pressure roller drive components 252. Its structure is the same as the opening and closing adjustment mechanism.

[0076] like Figures 1 to 5As shown, in this embodiment, the bonding feeding device further includes a fixed-length detection mechanism 3 disposed on the conveying bracket 211 of the bonding feeding support. The main feeding device includes a cutting mechanism 6 and a fixed-length detection mechanism 3 that cooperates with the cutting mechanism 6. Therefore, in this embodiment, the adhesive feeding system includes two fixed-length detection mechanisms 3, namely a first fixed-length detection mechanism disposed on the main feeding device and a second fixed-length detection mechanism disposed on the bonding feeding device. The fixed-length detection mechanism 3 on the main feeding device is used to cooperate with the cutting mechanism 6 to cut adhesive of a specified length. The fixed-length detection mechanism 3 on the bonding feeding device is used to perform a secondary length measurement on the cut adhesive, providing a basis for high-quality bonding of the adhesive to the molding drum. In this embodiment, the two fixed-length detection mechanisms 3 use the same measurement method; the following explanation will focus on the fixed-length detection mechanism 3 on the conveying bracket 211. Figure 4 and Figure 5As shown, the fixed-length detection mechanism 3 includes a sensor mounting base 33 and a through-beam fiber optic sensor 34. Specifically, the sensor mounting base 33 is mounted on the conveyor support 211. The conveyor mechanism 22 includes a light-transmitting synchronous conveyor belt, and the transmitting and receiving ends of the through-beam fiber optic sensor 34 are respectively arranged on the upper and lower sides of the conveyor belt. When the rubber material on the conveyor belt passes the through-beam fiber optic sensor 34, the fiber optic cannot pass through the rubber material, thus triggering the through-beam fiber optic sensor 34. Using the fixed-length detection mechanism 3, the rubber material feeding system can separately identify the position status of the head and tail of the material. The through-beam fiber optic sensor 34 is not affected by the cross-sectional shape of the rubber material or the positional accuracy, which can improve the accuracy of identification. Of course, in order to separately identify the position of the head and tail of the rubber material, other sensors can also be used in the fixed-length detection mechanism, which is not limited here. When the fixed-length detection mechanism 3 detects and identifies the head of the rubber material, the conveyor mechanism 22 continues to convey a certain distance, so that the head of the material is located directly below the gripping component, realizing the accurate gripping of the head of the rubber material by the gripping component. When the fixed-length detection mechanism 3 detects and identifies the tail of the rubber material, the conveying mechanism 22 continues to convey it a certain distance, so that the tail is directly below the gripping component, achieving accurate gripping of the tail by the gripping component. Simultaneously, after the gripping component grips the tail, the length of the rubber material not yet adhered to the forming drum is the distance between the position of the gripping component and the adhesion endpoint on the forming drum. This length can be called the unattached length. Based on the rotation angle of the rubber material after it adheres to the forming drum 9 and the radius of the forming drum, the remaining arc length of the unattached rubber material on the forming drum 9 can be calculated. If the unattached length is less than the remaining arc length, the rotation speed of the forming drum 9 can be increased or the moving speed of the first moving seat 242 can be decreased as the rubber material continues to adhere to the forming drum 9, to slightly stretch the unattached rubber material, making the unattached length greater than or equal to the remaining arc length. Thus, after the adhesive material is fully bonded to the molding drum, gaps and loose connections at the joint between the adhesive material head and tail can be avoided, thereby improving the bonding quality and efficiency. In this embodiment, a feeding mechanism is used to grab the tail of the adhesive material and deliver it. Simultaneously, if the unbonded length is less than the remaining arc length, the adhesive material can be stretched during transport to prevent gaps at the joint, thus improving bonding quality. Of course, in other optional embodiments, other methods can be used to measure the remaining length or arc length, such as using a visual recognition mechanism to photograph the remaining adhesive material to obtain the remaining length; this is not limited here.

[0077] like Figures 1 to 5As shown, the fixed-length detection mechanism 3 also includes a sensor adjustment component for adjusting the position of the through-beam fiber optic sensor 34. Specifically, in this embodiment, the sensor adjustment component can control the through-beam fiber optic sensor 34 to move along the width direction of the conveyor belt, thereby enabling the selection of the required measurement position according to the size and shape of the rubber material, and improving the applicability of the fixed-length detection mechanism 3. Furthermore, the sensor adjustment component can drive the transmitting end and receiving end of the through-beam fiber optic sensor 34 to move synchronously, thus ensuring that the position detection of the rubber material is not affected by the position adjustment of the through-beam fiber optic sensor 34 in the width direction.

[0078] like Figures 1 to 5 As shown, specifically, the fixed-length detection mechanism 3 further includes two support cross plates 31 disposed on the conveyor bracket 211, wherein the two support cross plates 31 are respectively arranged on the upper and lower sides of the conveyor belt. The fixed-length detection mechanism 3 also includes a slider assembly 32 disposed on the support cross plates 31, and a sensor mounting base 33 is disposed on the slider assembly 32. The transmitting end and receiving end of the through-beam fiber optic sensor 34 are respectively disposed on the two sensor mounting bases 33. A sensor adjustment assembly is disposed on the conveyor bracket 211. The sensor adjustment assembly includes pulley assemblies respectively connected to the two sensor mounting bases 33, and the two pulley assemblies rotate synchronously. Furthermore, the sensor adjustment assembly includes two bearing seats 351 mounted on the conveying bracket 211, axles 352 passing through the bearing seats 351 in the vertical direction, two pulleys 353 respectively mounted at the upper and lower ends of each axle 352, two transmission belts 354 respectively connecting the two pulleys 353, a fixing plate 355 fixing the transmission belts 354 to the sensor mounting base 33, and an adjusting handwheel 356 connected to the axle 352. The fixing plate 355 achieves a fixed connection between the sensor adjustment assembly and the sensor mounting base 33. Furthermore, the sensor adjustment assembly also includes a counter 357 connected to the adjusting handwheel 356. The adjusting handwheel 356, in conjunction with the counter 357, facilitates precise adjustment of the sensor mounting base 33 in the width direction. It should be noted that, driven by the adjusting handwheel 356, the two pulley assemblies rotate synchronously, driving the two sensor mounting bases 33 to move synchronously, realizing synchronous movement of the transmitting and receiving ends of the through-beam fiber optic sensor 34 in the same direction. The fixed-length detection mechanism of this embodiment has a simple structure, is easy to arrange, and is convenient to operate.

[0079] like Figure 1 and Figure 2As shown, the main feeding device includes a main feeding frame 1, and a bonding feeding bracket is hinged to the end of the main feeding frame 1, meaning the bonding feeding bracket can deflect relative to the main feeding frame 1. Specifically, a deflection shaft is provided between the bonding feeding bracket and the main feeding frame 1. The bonding feeding bracket has a bonding position M, away from the forming drum 9, and a bonding position N, close to the forming drum 9. The bonding feeding bracket can deflect downwards around the deflection shaft from the bonding position M to the bonding position N. Specifically, a deflection drive mechanism 26 is provided between the bonding feeding bracket and the main feeding frame 1, and the deflection drive mechanism 26 is used to drive the bonding feeding bracket to deflect. The deflection drive mechanism 26 controls the bonding feeding bracket to deflect downwards to approach the forming drum 9, so that the rubber material can be delivered to the forming drum 9. The deflection drive mechanism 26 controls the bonding feeding bracket to lift upwards to avoid interference between the bonding feeding bracket and other devices on the tire forming machine and the forming drum 9 when forming the tire blank. In this embodiment, the bonding feeding bracket is hinged and then deflected in conjunction with the deflection drive mechanism 26, which simplifies the structure of the bonding feeding device, makes assembly convenient and reduces costs.

[0080] like Figures 1 to 6 As shown, preferably, a centering mechanism, specifically a feeding end centering mechanism 23, is provided at the end of the conveying bracket 211 away from the main feeding frame 1. The feeding end centering mechanism 23 receives the adhesive material from the conveying mechanism 22 and maintains the position of the adhesive material during delivery to the molding drum, thereby achieving the centering function and improving the bonding quality. In this embodiment, the feeding end centering mechanism 23 extends beyond the conveying bracket 211, and the width of the extended portion is smaller than the width of the conveying bracket 211. That is, the smaller-width feeding end centering mechanism 23 is used to approach the tire assembly on the molding drum 9 to convey and support the adhesive material that has detached from the conveying mechanism 22.

[0081] like Figure 1As shown in the figure, the feeding end centering mechanism 23 is provided with a guide channel that cooperates with the rubber material. In this embodiment, the feeding end centering mechanism 23 is located at the feeding end of the rubber material supply system, meaning that the rubber material is bonded after passing through the guide channel. Before the rubber material is bonded, the guide channel limits the rubber material, which can prevent the rubber material from shifting during bonding, achieving accurate bonding and thus improving the forming quality of the tire carcass. Preferably, the width of the guide channel is adjustable. In this embodiment, the feeding end centering mechanism 23 is provided with two parallel guide channels, and the width of the two guide channels can be adjusted synchronously to meet the needs of rubber materials of different widths. Rubber material needs to be bonded at two positions on the tire body assembly. In this embodiment, the rubber material supply system provides two sections of rubber material simultaneously to meet the forming needs of the tire carcass. It should be noted that the adjustable width of the guide channel can match rubber materials of different widths, improving the applicability of the system. The synchronous adjustment of the widths of the two guide channels can keep the center of symmetry of the two guide channels unchanged, achieving fast and accurate adjustment. Two guide channels are set up corresponding to two gripping components of the feeding mechanism, so that two sections of adhesive material can be gripped and bonded at the same time.

[0082] like Figures 1 to 6 As shown, in this embodiment, the feeding end centering mechanism 23 includes two guide plate assemblies. Each guide plate assembly includes two parallel guide plates 231. The feeding end centering mechanism 23 also includes multiple support rollers 232 disposed between the two guide plates 231. The two guide plates 231 and the multiple support rollers 232 cooperate to form a guide channel. One end of each support roller 232 is fixedly connected to one guide plate 231, and the other guide plate 231 has a clearance hole 2311 for the support roller 232 to pass through. The multiple support rollers 232 support the bottom of the adhesive material, and the two guide plates 231 respectively limit the two sides of the adhesive material, thereby achieving the limitation of the adhesive material. Preferably, the guide plate 231 is provided with multiple side guide rollers 233, and the sides of the adhesive material contact the side guide rollers 233, which can reduce friction while limiting the material and ensure smooth movement of the adhesive material. In this embodiment, one end of the support roller 232 is fixedly connected to one of its guide plates 231, and the other guide plate 231 has a clearance hole 2311 for the support roller 232 to pass through, thereby facilitating the adjustment of the distance between the two guide plates 231, which in turn facilitates the adjustment of the width of the guide channel. Specifically, in this embodiment, one end of the support roller 232 is fixedly connected to the guide plate 231 by a nut 2321, and the support roller 232 and the clearance hole 2311 are in clearance fit.

[0083] like Figures 1 to 6As shown, in this embodiment, the two guide plate assemblies include four guide plates 231 arranged sequentially. The feeding end centering mechanism 23 also includes two lead screw adjustment assemblies. One lead screw adjustment assembly is used to drive the two inner guide plates 231 to move in opposite directions, and the other lead screw adjustment assembly is used to drive the two outer guide plates 231 to move in opposite directions, thereby realizing the synchronous adjustment of the width of the two guide channels. Preferably, two first guide rod sliding sleeve assemblies 234 are provided between the four guide plates 231. The ends of the first guide rod sliding sleeve assemblies 234 are connected to the conveying bracket 211, thereby improving the stability of the guide plates 231 when moving. The two lead screw adjustment assemblies are installed on the conveying bracket 211, and are respectively the first lead screw adjustment assembly and the second lead screw adjustment assembly. The first lead screw adjustment assembly includes a first lead screw 2351 and a first rocker wheel 2352 connected to the end of the first lead screw 2351, and the second lead screw adjustment assembly includes a second lead screw 2361 and a second rocker wheel 2362 connected to the end of the second lead screw 2361. The first lead screw 2351 has two helical segments pointing in opposite directions, and the two inner guide plates 231 are equipped with threaded sleeves that mate with the two helical segments on the first lead screw 2351. The first rocker wheel 2352 controls the rotation of the first lead screw 2351, thereby controlling the two inner guide plates 231 to simultaneously move closer or further apart in the width direction. That is, the two guide plates 231 move closer or further apart simultaneously, allowing for synchronous adjustment of the width of the two guide channels. Similarly, the second lead screw adjustment assembly controls the two outer guide plates 231 to simultaneously move closer or further apart. When either the two inner or outer guide plates 231 move simultaneously, the center of symmetry of the two guide channels remains unchanged, ensuring that the two rubber materials are symmetrically applied to the outer side of the tire assembly. Therefore, adjusting the width of the guide channels while keeping the center of symmetry constant reduces adjustment variables, lowers adjustment difficulty, and facilitates adjustment, thus ensuring accurate bonding. Preferably, in this embodiment, the bottom wall of the guide plate 231 is provided with a guide plate extension 2312, which is arranged diagonally below the guide plate 231. The guide plate extension 2312 is connected to the lead screw adjustment assembly, so that the guide channel can be connected with the conveying mechanism 22, and interference is avoided when the lead screw adjustment assembly is in contact.

[0084] like Figures 1 to 7As shown, the main feeding device includes a correction mechanism 5 and a centering mechanism 4 at the feeding end, both mounted on the main feeding frame 1. The centering mechanism 23 at the feeding end of the bonding feeding device and the centering mechanism 4 at the feeding end of the main feeding device achieve centering by guiding and limiting the adhesive material. Centering refers to limiting the bonding position of the adhesive material on the molding drum to ensure accurate bonding. The correction mechanism 5 controls the movement of the adhesive material to achieve active correction, ensuring accurate delivery of the adhesive material to the main feeding frame 1. The centering mechanism 4 at the feeding end has two parallel limiting channels. The width of the limiting channels is adjustable, and the widths of the two limiting channels can be adjusted synchronously to accommodate pads of different widths. The adhesive material passes sequentially through the centering mechanism 4 at the feeding end and the correction mechanism 5. After initial centering and limiting by the centering mechanism 4, the correction by the correction mechanism 5 further improves the positional accuracy of the adhesive material. In this embodiment, the positions of the limiting channel of the centering mechanism 4 at the feeding end and the guide channel of the centering mechanism 23 at the feeding end correspond to the bonding position of the adhesive on the molding drum, thereby achieving accurate bonding of the adhesive to the molding drum 9.

[0085] like Figure 7 and Figure 8 As shown, in this embodiment, the feeding end centering mechanism 4 includes two fixed side plates 41 mounted on the main feeding frame 1, two positioning plate assemblies disposed between the two fixed side plates 41, multiple limiting rollers 43 disposed on the positioning plate assemblies, and multiple inner guide rollers 44 disposed between the two fixed side plates 41. Each positioning plate assembly includes two parallel positioning plates 42, and multiple limiting rollers 43 are disposed on the side wall of the positioning plate 42. The inner guide rollers 44 cooperate with the two limiting rollers 43 to form a limiting channel. In this embodiment, the feeding end centering mechanism 4 is arranged vertically, so that the limiting channel extends vertically. When the rubber material passes through the limiting channel, the bottom surface of the rubber material contacts the inner guide rollers 44, and the two sides of the rubber material contact the limiting rollers 43 on both sides, thereby limiting the rubber material and preventing the rubber material from deviating. In this embodiment, five limiting rollers 43 are arranged vertically at intervals on the positioning plate 42, and an inner guide roller 44 extending horizontally is disposed between each adjacent two limiting rollers 43. Preferably, in this embodiment, the feeding end centering mechanism 4 further includes an outer guide roller 45 disposed between the two fixed side plates 41 and parallel to the inner guide roller 44. Thus, the feeding end centering mechanism 4 can limit the rubber material in both the width and front-back directions, preventing the rubber material from arching during transmission within the limiting channel, achieving a good centering effect.

[0086] like Figure 7 and Figure 8As shown, in this embodiment, the two positioning plate assemblies include a total of four positioning plates 42 arranged sequentially, and each positioning plate assembly includes two positioning plates 42 spaced apart. The feeding end centering mechanism 4 also includes two lead screw adjustment assemblies disposed between the two fixed side plates 41. One lead screw adjustment assembly is used to drive the two inner positioning plates 42 to move closer or further away from each other simultaneously, and the other lead screw adjustment assembly is used to drive the two outer positioning plates 42 to move closer or further away from each other simultaneously. Preferably, two second guide rod sliding sleeve assemblies 46 are provided between the four positioning plates 42, and the ends of the second guide rod sliding sleeve assemblies 46 are connected to the fixed side plates 41, thereby improving the stability of the positioning plates 42 when moving. Specifically, the two lead screw adjustment assemblies are a third lead screw adjustment assembly and a fourth lead screw adjustment assembly. The third lead screw adjustment assembly includes a third lead screw 471 and a third rocker wheel 472 connected to the end of the third lead screw 471, and the fourth lead screw adjustment assembly includes a fourth lead screw 481 and a fourth rocker wheel 482 connected to the end of the fourth lead screw 481. The third lead screw 471 has two helical segments pointing in opposite directions, and the two outer positioning plates 42 are equipped with threaded sleeves that mate with the two helical segments on the third lead screw 471. The rotation of the third lead screw 471 is controlled by the third rocker wheel 472, thereby controlling the two outer positioning plates 42 to simultaneously move closer or further apart in the width direction, thus allowing for synchronous adjustment of the width of the two limiting channels. Similarly, the fourth lead screw adjustment assembly controls the two inner positioning plates 42 to simultaneously move closer or further apart in the width direction. When the two inner positioning plates 42 or the two outer positioning plates 42 move simultaneously, the center of symmetry of the two limiting channels remains unchanged, reducing adjustment variables, lowering adjustment difficulty, and facilitating adjustment, thereby ensuring accurate fit.

[0087] like Figures 7 to 9As shown, in this embodiment, the correction mechanism 5 includes a positioning shaft 52 fixed at both ends on the main feed frame 1, two correction rollers 53 spaced apart on the positioning shaft 52, and a drive assembly for controlling the correction rollers 53. The two correction rollers 53 respectively cooperate with two pieces of rubber material to correct their deviation. Specifically, in this embodiment, the correction roller 53 includes a linear bearing inner sleeve and a correction roller cylinder rollingly supported on the linear bearing inner sleeve. The linear bearing inner sleeve is fitted onto the positioning shaft 52 and can move relative to the positioning shaft 52 to realize the correction function of the correction mechanism 5. Further, in this embodiment, the drive assembly includes a drive device 54, a first connecting frame 551, and a second connecting frame 552. One end of the first connecting frame 551 is fitted onto the positioning shaft 52 and fixedly connected to the linear bearing inner sleeve; the other end of the first connecting frame 551 is hinged to the telescopic shaft of the drive device 54. One end of the second connecting frame 552 is hinged to the housing of the drive device 54, and the other end is fixedly mounted on the main feed frame 1. Furthermore, in this embodiment, the driving device 54 is an electric cylinder, which can easily drive the correction roller to move axially to perform the correction action. The correction mechanism 5 also includes a correction photoelectric sensor 51 disposed on the main feed frame 1. The correction photoelectric sensor 51 is used to detect whether the rubber material has deviated, thereby feeding back a signal to the driving device 54 to perform the correction action.

[0088] like Figure 10 and Figure 11 As shown, in this embodiment, the main feeding device includes a cutting mechanism 6, a material ejection device, and a first conveying device 71 and a second conveying device 72 arranged sequentially along the feeding direction on the main feeding frame 1. The material ejection device is located between the first conveying device 71 and the second conveying device 72, and includes an ejection port that can be opened or closed. The material ejection device includes a conveyor roller 832 that can be flipped downwards to open the ejection port. When the conveyor roller 832 is in a horizontal state, the ejection port is in a closed state; when the conveyor roller 832 is flipped downwards, the ejection port is in an open state. The main feeding frame 1 is provided with an overlap detection mechanism that cooperates with the first conveying device 71. The overlap detection mechanism is used to detect the overlap area on the adhesive material, which is formed by pasting two pieces of adhesive material end to end. The main feeding device also includes an ejection detection mechanism arranged on the main feeding frame 1 and cooperating with the second conveying device 72. The second conveying device 72 can convey materials in both the forward and backward directions.

[0089] like Figure 10 and Figure 11As shown, the cutting mechanism 6 is located above the end of the first conveying device 71. The cutting mechanism 6 includes a cutting anvil 61 and a cutting blade 62. The cutting anvil 61 is positioned between the first conveying device 71 and the unloading device. When the overlap area triggers the overlap detection mechanism, the adhesive material continues to be conveyed forward by the first conveying device 71, allowing the overlap area to pass through the cutting anvil 61. After the overlap area passes through the cutting anvil 61 and the conveyor roller 832 in sequence, the cutting mechanism 6 cuts the adhesive material, separating the overlap area from the adhesive material. The second conveying device 72 continues to convey the waste adhesive material containing the overlap area. After the overlap area triggers the unloading detection mechanism, the second conveying device 72 continues to convey forward until the end of the waste adhesive material passes through the conveyor roller 832. Next, the conveyor roller 832 flips downwards to open the discharge port; then, the second conveying device 72 switches the conveying direction from forward to backward. In this way, the waste rubber material falls from the discharge port during the backward conveying process, separating the waste rubber material from the feeding device and achieving automatic removal without manual handling, thereby improving production efficiency. A collection box is placed below the discharge port to collect the waste rubber material. In this embodiment, the conveyor roller 832 is flipped to open or close the discharge port, which has the advantages of simple structure and convenient arrangement. Of course, in other optional embodiments, the conveyor roller 832 can also be moved horizontally to open or close the discharge port; this is not limited here.

[0090] like Figure 10 and Figure 11 As shown, in this embodiment, the unloading device further includes a fixed bracket 831 mounted on the main feeding frame 1, and one end of the conveyor roller 832 is hinged to the fixed bracket 831. The unloading device also includes a flipping drive device 833 mounted on the main feeding frame 1 and connected to the conveyor roller 832. Specifically, in this embodiment, the flipping drive device 833 is a cylinder hinged to the main feeding frame 1, and the conveyor roller 832 is hinged to the telescopic shaft of the cylinder. When the telescopic shaft of the cylinder extends, the conveyor roller 832 is in a horizontal state, conveying and supporting the rubber material. When the telescopic shaft of the cylinder retracts, the conveyor roller 832 flips downward, and the unloading port is in an open state; of course, in other optional embodiments, the flipping drive device 833 can also adopt other drive structures, which are not limited here. Preferably, in this embodiment, a conveyor roller 834 is rolled on the fixed bracket 831. The conveyor roller 834 is disposed between the first conveying device 71 and the conveyor roller track 832. Specifically, the conveyor roller 834 is located between the cutting anvil 61 and the conveyor roller track 832. With the installation distance between the cutting anvil 61 and the second conveying device 72 remaining unchanged, the three rollers of the unloading device are set as a flip-out conveyor roller track 832, and one conveyor roller 834 is set as fixed. This helps to reduce the flipping radius of the conveyor roller track 832, thereby facilitating the arrangement of the flipping drive device 833.

[0091] like Figure 10 and Figure 11 As shown, the second conveying device 72 is located near the unloading device, with a brush roller 84 positioned below it. Specifically, in this embodiment, the second conveying device 72 includes a conveyor belt, and the brush roller 84 is used to promote the separation of the rubber material from the conveyor belt, preventing the bottom of the second conveying device 72 from collapsing during rubber material transport. Preferably, when the second conveying device 72 conveys in the backward direction, the rotation direction of the conveying roller of the second conveying device 72 is the same as the rotation direction of the brush roller 84. When the second conveying device 72 conveys in the backward direction, the conveying roller rotates clockwise, and the brush roller 84 also rotates clockwise, thereby further promoting the separation of the rubber material. Preferably, a transmission assembly is provided between the conveying roller and the brush roller 84. After the conveying roller rotates, it drives the brush roller 84 to rotate through the transmission assembly, which simplifies the structure, reduces costs, and facilitates arrangement. The transmission assembly can be a sprocket and chain assembly or a gear assembly that ensures that the conveying roller and the brush roller 84 rotate in the same direction. Of course, in other alternative embodiments, a separate drive device can be used to control the rotation of the brush roller 84, or a scraper can be used to facilitate the separation of the rubber material from the conveyor belt.

[0092] like Figure 10 and Figure 11 As shown, in this embodiment, the overlap detection mechanism includes an overlap detection roller 811 disposed above the first conveying device 71, and an overlap detection sensor 812 for detecting the position state of the overlap detection roller 811. The unloading detection mechanism includes an unloading detection roller 821 disposed above the second conveying device 72, and an unloading detection sensor 822 for detecting the position state of the unloading detection roller 821. When a single layer of rubber material passes through the overlap detection roller 811, the overlap detection sensor 812 will not be triggered. When the overlap area of ​​the rubber material passes through the overlap detection roller 811, the overlap detection roller 811 is lifted and deflected upward, causing its position state to change and triggering the overlap detection sensor 812. Similarly, when a single layer of rubber material passes through the ejection detection roller 821, the ejection detection sensor 822 will not be triggered. When the overlapping area of ​​the rubber material passes through the ejection detection roller 821, the ejection detection roller 821 is lifted and deflected upwards, causing a change in its position and triggering the ejection detection sensor 822. In this embodiment, the roller and sensor work together as the detection mechanism, so the roller itself can also play an auxiliary role in pressing the material. Of course, in other optional embodiments, the detection mechanism can also take other forms, such as visual recognition or photoelectric recognition, etc., which are not limited here.

[0093] Example 2:

[0094] A method for feeding rubber compound based on the rubber compound feeding system in Example 1, referring to... Figures 1 to 12 This is used to convey rubber compound to the molding drum via a rubber compound feeding system. The method includes:

[0095] Step 1: The bonding feeding device receives the adhesive material from the main feeding device and continues to convey the adhesive material to the forming drum through the conveying mechanism;

[0096] Step 2: When the conveying mechanism delivers the head of the rubber material to the initial position of the feeding mechanism, the feeding mechanism grabs the head of the rubber material and delivers it toward the forming drum;

[0097] Step 3: When the material head reaches the forming drum, the feeding mechanism releases the material and returns to the initial position. At the same time, the forming drum rotates, and the material is sequentially bonded along the bonding circumference of the forming drum.

[0098] Step 4: When the conveying mechanism delivers the tail of the rubber material to the initial position of the feeding mechanism, the feeding mechanism grabs the tail of the rubber material and delivers it toward the forming drum.

[0099] Step 5: When the tail of the rubber material reaches the forming drum, the feeding mechanism releases the rubber material and returns to the initial position. At this time, the tail of the rubber material engages with the head of the rubber material, and the feeding is completed.

[0100] More specifically,

[0101] Step 1: The main feeding device receives the adhesive material from the feeding end and completes the fixed-length cutting of the adhesive material, and then conveys the cut adhesive material to the bonding feeding device;

[0102] Step 2: The bonding feeding device receives the cut adhesive material from the main feeding device and transfers it to the forming drum via the conveying mechanism.

[0103] Step 3: When the conveying mechanism delivers the head of the rubber material to the feeding mechanism, the feeding mechanism grabs the head of the rubber material and moves it toward the forming drum. At this time, the conveying mechanism moves synchronously with the feeding mechanism.

[0104] Step 4: When the head of the rubber material reaches the forming drum, the feeding mechanism releases the rubber material and returns to its original position. At the same time, the pressure roller mechanism presses against the head of the rubber material and rolls the rubber material under the drive of the forming drum.

[0105] Step 5: When the conveying mechanism delivers the tail of the rubber material to the position of the feeding mechanism, the feeding mechanism grabs the tail of the rubber material and moves towards the forming drum. At this time, the feeding mechanism follows the rotation of the forming drum until the tail of the material reaches the forming drum. Then the feeding mechanism releases the rubber material and returns to its original position.

[0106] Step 6: The pressure roller mechanism rolls the tail and head of the rubber material to join the two ends of the material, at which point the feeding is complete.

[0107] Specifically, in steps three to five, during the bonding of the adhesive materials, the pressure roller mechanism continuously rolls the adhesive material on the forming drum.

[0108] Specifically, in step two, during the process of the feeding mechanism grabbing the head of the rubber material and delivering it towards the forming drum, the feeding speed of the feeding mechanism is the same as the conveying speed of the conveying mechanism; in step three, during the process of the rubber material being sequentially bonded along the bonding circumferential surface of the forming drum, the rotational linear velocity of the bonding circumferential surface of the forming drum is the same as the conveying speed of the conveying mechanism; in step four, during the process of the feeding mechanism grabbing the tail of the rubber material and delivering it towards the forming drum, the feeding speed of the feeding mechanism is the same as or different from the rotational linear velocity of the bonding circumferential surface of the forming drum.

[0109] In other words, in step four, during the process of the feeding mechanism grabbing the tail of the adhesive material and delivering it toward the molding drum, the delivery speed of the feeding mechanism can be different from the rotational linear speed of the bonding circumference of the molding drum, so as to achieve stretching correction of the adhesive material, thereby avoiding gaps at the joint between the head and tail of the material and improving the bonding quality.

[0110] In step four, there are several ways to determine whether the rubber compound needs stretching correction. Examples are given below.

[0111] In the first method, in step four, the theoretical length of the rubber material is L, the actual length of the rubber material is L', the delivery speed of the feeding mechanism is V, and the rotational linear velocity of the contact circumference of the forming drum is V'.

[0112] When L' < L, V < V'; when L' ≥ L, V = V'.

[0113] The cutting mechanism 6 cuts the rubber material according to its theoretical length. The length of the cut rubber material may deviate from the theoretical length. Therefore, after cutting, the second fixed-length detection mechanism, in conjunction with the conveying speed of the conveying mechanism, can perform a second measurement on the rubber material to obtain its actual length. If the actual length is less than the theoretical length, the rubber material needs to be stretched and corrected. If the actual length is greater than or equal to the theoretical length, the rubber material does not need to be stretched and corrected.

[0114] The second method is as follows: in step four, let the length of the unattached adhesive material on the bonding circumference of the forming drum be L1, the remaining length of the adhesive material that is not attached to the forming drum be L1', the delivery speed of the feeding mechanism be V, and the rotational linear velocity of the bonding circumference of the forming drum be V'.

[0115] When L1' < L1, V < V'; when L1' ≥ L1, V = V'.

[0116] Specifically, in this embodiment, the remaining length L1' is calculated by identifying the position of the material tail, and the remaining length L1 is calculated based on the rotation angle of the molding drum and the radius of the bonding circumference. Of course, in other optional embodiments, the remaining length L1' and the remaining length L1 can be compared by measuring the actual values ​​separately. For example, visual recognition detection can be used to take pictures of the remaining adhesive material and the unbonded area on the molding drum, and then the remaining length L1' and the remaining length L1 can be obtained.

[0117] Specifically, in this embodiment, the conveying mechanism is equipped with a fixed-length detection mechanism to identify the position status of the material head and the material tail respectively; the feeding mechanism includes a gripping component. In this embodiment, the gripping component is analyzed as a point, and its gripping length is not considered; when the gripping component is in the initial position, that is, above the conveying mechanism, the distance between the trigger point of the fixed-length detection mechanism and the gripping component is M1; the conveying stroke of the gripping component is M2, that is, the moving stroke of the material tail after gripping and conveying it to the fitting end point is M2.

[0118] Once the fixed-length detection mechanism detects the material head, the conveying mechanism continues to convey the material a distance of M1, so that the material head is directly below the gripping component, thus enabling accurate gripping of the material head.

[0119] Once the fixed-length detection mechanism detects the material tail, the conveying mechanism will continue to convey the material a distance of M1, so that the material tail is located directly below the gripping component, thus enabling accurate gripping of the material tail.

[0120] After the gripping component accurately grips the material tail, the remaining length of the material is L1', where L1' = M2. The remaining length of the unbonded area on the forming drum is L1, which is the arc length between the tangent point A of the material and the forming drum and the material head B. Based on the rotation angle of the forming drum and the bonding radius, the arc length of the material head movement can be calculated. Subtracting the arc length of the material head movement from the circumference gives L1. Comparing L1 with L1' determines whether the remaining material needs to be stretched.

Claims

1. A rubber material feeding system for a tire forming machine, the tire forming machine including a forming drum for forming a tire blank, the rubber material feeding system being used to feed rubber material required for forming the tire blank to the forming drum and to adhere the rubber material to the forming drum; Its features are: The adhesive feeding system includes a main feeding device and a bonding feeding device located at the end of the main feeding device. The bonding and feeding device includes: A bonding feeding bracket, the bonding feeding bracket including a conveying bracket and a delivery bracket fixedly disposed above the conveying bracket; The conveying mechanism, supported on the conveying bracket, is used to receive and convey the adhesive material from the main feeding device. The pressure roller mechanism, supported on the material delivery bracket, is used to roll and bond the adhesive material; and, A feeding mechanism supported on the feeding bracket; The feeding mechanism is used to deliver the head and tail of the rubber material on the conveying mechanism to the forming drum in sequence, so as to complete the joint of the head and tail of the rubber material on the forming drum. The feeding mechanism includes a gripping component for gripping the adhesive material and a composite driving component for driving the gripping component to move. The composite drive component includes: A first drive assembly disposed on the delivery bracket for driving the gripping assembly to deliver adhesive material; A second drive component is disposed on the first drive component and is used to drive the gripping component to grip the adhesive material.

2. The rubber compound feeding system according to claim 1, characterized in that: The gripping assembly includes a gripper, a drive member, and a stop member. The drive member controls the gripper to grip the adhesive material, and the stop member presses against the adhesive material when the gripper releases the adhesive material.

3. The rubber compound feeding system according to claim 2, characterized in that: The stop member is fixedly disposed relative to the drive member and extends below the gripper member. The stop member is provided with a through hole, through which the gripper member grips the adhesive material.

4. The rubber compound feeding system according to claim 1, characterized in that: The first driving component includes: A first slide block is slidably connected to the material delivery bracket; A first driver, disposed on the material delivery bracket, is used to drive the first slide to reciprocate along a first direction, the first direction being the same as the delivery direction of the adhesive material.

5. The rubber compound feeding system according to claim 4, characterized in that: The second driving component includes: A second slide block is slidably connected to the first slide block; A second driver is disposed on the first slide block and is used to drive the second slide block to reciprocate along the second direction; The gripping component is disposed on the second slide, and the second direction is the same as the gripping direction of the gripping component.

6. The rubber compound feeding system according to claim 5, characterized in that: The second direction is perpendicular to the first direction.

7. The rubber compound feeding system according to claim 1, characterized in that: The main feeding device includes a cutting mechanism and a first fixed-length detection mechanism that cooperates with the cutting mechanism.

8. The rubber compound feeding system according to claim 7, characterized in that: The feeding device is equipped with a second fixed-length detection mechanism that cooperates with the feeding mechanism.

9. The rubber compound feeding system according to claim 8, characterized in that: The second fixed-length detection mechanism includes a through-beam fiber optic sensor, and the conveying mechanism includes a light-transmitting conveyor belt. The transmitting end and receiving end of the through-beam fiber optic sensor are respectively arranged on the upper and lower sides of the conveyor belt.

10. The rubber compound feeding system according to claim 1, characterized in that: The main feeding device includes a main feeding frame, and a deflection shaft is provided between the bonding feeding bracket and the main feeding frame; the bonding feeding bracket has a bonding position away from the forming drum and a bonding position close to the forming drum; the bonding feeding bracket can deflect around the deflection shaft between the bonding position and the bonding position.

11. The rubber compound feeding system according to claim 10, characterized in that: The adhesive feeding system also includes a deflection drive mechanism, which is used to drive the bonding feeding bracket to deflect around the deflection axis.

12. The rubber compound feeding system according to claim 1, characterized in that: A centering mechanism is provided at one end of the conveying bracket near the molding drum. The centering mechanism is used to receive the rubber material from the conveying mechanism and maintain the position of the rubber material during the process of delivering the rubber material to the molding drum.

13. The rubber compound feeding system according to claim 12, characterized in that: The centering mechanism includes two parallel guide plates, each with multiple side guide rollers, and multiple support rollers between the two guide plates. The two guide plates and the multiple support rollers cooperate to form a guide channel that cooperates with the rubber material.

14. A method for feeding rubber compound based on the rubber compound feeding system of claim 1, characterized in that: The method includes: Step 1: The bonding feeding device receives the adhesive material from the main feeding device and continues to convey the adhesive material to the molding drum through the conveying mechanism; Step 2: When the conveying mechanism delivers the head of the rubber material to the initial position of the feeding mechanism, the feeding mechanism grabs the head of the rubber material and delivers it toward the molding drum; Step 3: When the tip of the adhesive material reaches the forming drum, the feeding mechanism releases the adhesive material and returns to its initial position. At the same time, the forming drum rotates, and the adhesive material is sequentially bonded along the bonding circumference of the forming drum. Step 4: When the conveying mechanism delivers the tail of the rubber material to the initial position of the feeding mechanism, the feeding mechanism grabs the tail of the rubber material and delivers it toward the molding drum; Step 5: When the tail of the rubber material reaches the forming drum, the feeding mechanism releases the rubber material and returns to its initial position. At this time, the tail of the rubber material engages with the head of the rubber material, and the feeding is completed.

15. The method for feeding rubber compound according to claim 14, characterized in that: In steps three through five, during the bonding of the adhesive materials, the pressure roller mechanism continuously rolls the adhesive materials on the forming drum.

16. The method for feeding rubber compound according to claim 14, characterized in that: In step two, during the process of the feeding mechanism grabbing the head of the rubber material and delivering it toward the molding drum, the feeding speed of the feeding mechanism is the same as the conveying speed of the conveying mechanism. In step three, during the process of the adhesive material being sequentially applied along the circumferential surface of the forming drum, the rotational linear velocity of the application circumferential surface of the forming drum is the same as the conveying speed of the conveying mechanism. In step four, during the process of the feeding mechanism grabbing the tail of the rubber material and delivering it toward the molding drum, the feeding speed of the feeding mechanism may be the same as or different from the rotational linear speed of the mating circumferential surface of the molding drum.

17. The method for feeding rubber compound according to claim 16, characterized in that: In step four, let the theoretical length of the adhesive material be L, the actual length of the adhesive material be L', the delivery speed of the feeding mechanism be V, and the rotational linear velocity of the contact circumference of the forming drum be V'. When L' < L, V < V'; when L' ≥ L, V = V'.

18. The method for feeding rubber compound according to claim 16, characterized in that: In step four, let L1 be the length of the unattached adhesive material on the bonding circumference of the forming drum, L1' be the remaining length of the adhesive material not attached to the forming drum, V be the delivery speed of the feeding mechanism, and V' be the rotational linear velocity of the bonding circumference of the forming drum. When L1' < L1, V < V'; when L1' ≥ L1, V = V'.

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