Alternating feeding system and positioning control method

Abstract

The invention belongs to the technical field of tire forming feeding systems, aims to solve the problem that equipment is difficult to install, debug and maintain, and particularly relates to an alternate feeding system and a positioning control method. The motor assembly drives the movable frame to move back and forth on the guide rail assembly, and the guide rail assembly is provided with a station positioning system used for locking the movable frame on the feeding station. Two feeding subsystems are arranged on the movable frame side by side, and along with the back-and-forth movement of the movable frame, the two feeding subsystems can alternately reach the feeding station and can be locked on the feeding station through the station positioning system. According to the positioning control method, through speed reduction control and shutdown control, the pushing effect of the swing-up positioner on the movable frame and the buffering effect of the buffering positioner are combined, positioning deviation caused by inertia is overcome, and the positioning precision of the movable frame is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of tire molding feeding systems, and in particular relates to an alternating feeding system and a positioning control method. Background Art

[0002] In the field of tire forming equipment, tire forming requires laminating multiple rubber materials on a cylindrical drum, that is, multiple rubber materials are laminated one by one in the circumferential direction of the drum. The feeding system automatically transfers the rubber materials from the rubber roll to the drum, which requires multiple feeding systems. During the transfer process, the preset laminating position of the rubber materials relative to the drum in the axial direction is adjusted (commonly known as centering) and the rubber materials are cut (the rubber materials are cut into preset lengths). During the feeding process, the center line of the feeding system must coincide with the center line of the drum.

[0003] The feeding system supplies various rubber materials to the drum. The feeding process of one rubber material is called a feeding system. The feeding system is arranged in the vertical direction. The feeding system at the bottom layer is generally composed of a material cart and a bonding template (including mechanical centering), and the feeding system at other layers is generally composed of a material cart, a conveying template (including mechanical centering), an intermediate cloth storage bag, and a bonding template.

[0004] In most cases, the conveying templates and bonding templates of multiple feeding systems (four, five or even six sets) are stacked vertically, making the height of the entire feeding equipment very high. In order to reduce the overall height of the equipment and rationalize the bonding angle of the bonding template relative to the drum, the spacing between the conveying templates and the bonding templates of each feeding system needs to be reduced. Once the template spacing is reduced, it will greatly increase the difficulty of equipment installation, commissioning and maintenance, and reduce the convenience and practicality of equipment operation. For example, when loading and stacking materials, workers need to extend their arms into the gaps between the templates to handle the rubber on the templates, and sometimes their heads need to be inserted into the gaps between the templates to observe. If the template spacing is small, it is difficult to handle these problems, and the workers have strong emotional reactions, which seriously affects the debugging process and tire production efficiency; the bearings, screws, conveyor belts, etc. set on the templates are damaged and need to be replaced. All of these problems need to be handled by extending the arms into the gaps between the templates. If the entire template is disassembled and replaced, it will be more difficult and the maintenance cost will be higher. The feeding system is set vertically, and the drum does not need to be translated.

[0005] In some cases, there are multiple feeding systems that are set up both vertically and horizontally, and each feeding system cannot be translated. This requires the drum to be translated, because when the feeding system supplies rubber to the drum, the principle of the center line of the feeding system coinciding with the center line of the drum must be met. Summary of the invention

[0006] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art and to provide an alternating feeding system.

[0007] The present invention is realized through the following technical scheme: an alternating feeding system, comprising a guide rail assembly and a mobile frame; the mobile frame is driven to move linearly on the guide rail assembly by a motor assembly, and a station positioning system for locking the mobile frame on the feeding station is provided on the guide rail assembly; two sets of feeding subsystems are arranged side by side on the mobile frame, and as the mobile frame moves back and forth, the two sets of feeding subsystems can alternately reach the feeding station and can be locked on the feeding station through the station positioning system.

[0008] Furthermore, the feeding subsystem includes a material cart and a bonding template; the material cart is detachably connected to the mobile frame; the discharge end of the bonding template relative to the material cart is arranged on the outside of the mobile frame, and is connected to the bed for supporting the bonding template through a linear moving pair, the linear moving pair includes a guide rail and a slider, the guide rail is fixedly connected to the bed, and the slider is fixedly connected to the template frame arranged at the lower end of the bonding template.

[0009] Furthermore, the two fitting templates in the two feeding subsystems on the bed are connected together through the template frame, and the template frame is also provided with a connecting frame for connecting the mobile frame; each material cart on the mobile frame is provided with a material cart positioning component for locking the material cart on the mobile frame; under the coordinated action of the material cart positioning component and the connecting frame, the center line of the material cart coincides with the center line of the fitting template.

[0010] Furthermore, the trolley positioning assembly includes a fixed positioning block and a movable positioning block arranged relatively to each other, one end of the movable positioning block is hinged to the movable frame, and the other end is hinged to the cylinder rod of the first rotating cylinder, so that the movable positioning block can swing up and down with the telescopic movement of the first rotating cylinder; the movable positioning block can drive the trolley to reach the fixed positioning block and lock the trolley during the swinging process, and the movable positioning block can unlock the trolley after it is swung down.

[0011] Furthermore, a template positioning assembly is provided on the bed, and the template positioning assembly includes a cylinder bracket, a rotating cylinder, a gravity lock hook and a support roller; the cylinder bracket is fixedly connected to the bed, and the rotatable cylinder is hinged on the cylinder bracket, and the gravity lock hook is driven to telescope by the rotating cylinder, and the bottom surface of the gravity lock hook is an arc surface and is tangent to the support roller.

[0012] Furthermore, the motor assembly includes a variable frequency motor and a transmission roller, and the variable frequency motor is connected to the movable frame through a motor mounting bracket; the variable frequency motor drives the transmission roller to roll, and under the action of rolling friction and under the guidance of the linear moving pair, the movable frame moves linearly on the guide rail assembly.

[0013] Furthermore, the motor mounting bracket is hinged on the mobile frame, and an elastic plate is provided above the motor mounting bracket; one end of the elastic plate is fixedly connected to the mobile frame, and the other end is connected to the motor mounting bracket through a height adjustment bolt.

[0014] Furthermore, the workstation positioning system includes two sets of frame positioning assemblies arranged along the movement direction of the mobile frame; each set of frame positioning assemblies includes a buffer locator and a swing-up locator, and the swing-up locator and the buffer locator are arranged opposite to each other; a positioning plate is provided in the center of the bottom of the mobile frame, and the mobile frame is locked by clamping the positioning plate between the swing-up locator and the buffer locator; the buffer locator includes a shell, and a buffer block and a pressure block are sequentially arranged in the shell, and the pressure block is connected to a top block extending out of the shell; the swing-up locator includes a second rotating cylinder and a stopper, one end of the stopper is hinged to the guide rail assembly, and the other end is hinged to the cylinder rod of the second rotating cylinder. The swing-up locator can drive the mobile frame to reach the buffer locator and lock the mobile frame during the swing-up process, and the swing-up locator can unlock the mobile frame after it is swung down.

[0015] Furthermore, the frame positioning assembly also includes a positioning controller and three photoelectric switches arranged along the travel of the movable frame, the first photoelectric switch corresponds to the deceleration position, the second photoelectric switch corresponds to the stop position, and the third photoelectric switch corresponds to the positioning position; when the first photoelectric switch senses the positioning plate, the positioning controller is used to control the motor assembly to reduce the speed; when the second photoelectric switch senses the positioning plate, the positioning controller is used to control the motor assembly to stop; when the third photoelectric switch senses the positioning plate, it indicates that the feeding station has been reached.

[0016] The present invention also provides a positioning control method for an alternating feeding system, comprising the following steps:

[0017] When the first photoelectric switch senses the positioning plate, the motor assembly is controlled to reduce the rotation speed, so that the moving frame decelerates;

[0018] When the second photoelectric switch senses the positioning plate, the motor assembly is controlled to stop and the lifting of the swing-lift positioner is delayed. The mobile frame continues to move under the action of inertia and stops at the corresponding position of the swing-lift positioner. At this time, the swing-lift positioner is controlled to be lifted. During the lifting of the swing-lift positioner, the mobile frame is pushed to move slowly to the buffer positioner until the mobile frame completely presses the pressure block of the buffer positioner into the shell;

[0019] When the third photoelectric switch senses the positioning plate, the positioning is completed.

[0020] Compared with the prior art, the beneficial effects of the present invention include:

[0021] 1. The two sets of sub-feeding systems in the present invention are arranged in the horizontal direction, which changes the traditional purely vertical arrangement, increases the spacing between multiple sets of feeding system templates arranged in the vertical direction, solves the problem of difficult equipment installation, debugging and maintenance, and improves the convenience and practicality of equipment operation.

[0022] 2. The sub-feeding system includes a material cart and a bonding template. The rubber material is led away from the material cart to form a cloth storage bag and directly enters the bonding template. No additional conveying mechanism is required between the material cart and the bonding template, which shortens the size of the sub-feeding system and simplifies the structure.

[0023] 3. The alternating feeding system is set at the bottom layer, which is equivalent to simplifying a set of feeding systems, simplifying the conveying template (including mechanical centering) and the intermediate cloth storage bag, while shortening the overall length of the equipment and reducing the requirements for factory space.

[0024] 4. There is a big difference in weight between a fully loaded and half loaded material truck, but the present invention adopts a motor drive, and the translation speed is not affected by the change of the weight of the material truck. The translation speed runs at a set speed at a constant speed (except starting and stopping), the operation is stable, and the impact on the mobile frame is small.

[0025] 5. The present invention overcomes the positioning deviation caused by inertia and ensures the positioning accuracy of the mobile frame by using deceleration control, shutdown control, and combining the pushing effect of the swing-up positioner on the mobile frame and the buffering effect of the buffer positioner, rather than directly driving the mobile frame to the feeding station through a motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the alternating feeding system;

[0027] Figure 2 It is a structural diagram of the mobile frame;

[0028] Figure 3 is a structural schematic diagram of the motor assembly;

[0029] Figure 4 is a structural schematic diagram of the guide rail assembly;

[0030] Figure 5 It is a structural schematic diagram of a buffer positioner;

[0031] Figure 6 It is a structural diagram of the bed;

[0032] Figure 7 is a structural schematic diagram of a connecting frame;

[0033] Figure 8 A schematic diagram of the structure of the template positioning components;

[0034] Figure 1Middle: moving frame 1, guide rail assembly 2, material cart 3, bed 4, fitting template 5, material roll 6, lining cloth roll 7, cloth storage bag, drum 9;

[0035] Figure 2 Middle: caster 1-1, fixed positioning block 1-2, positioning plate 1-3, movable positioning block 1-4, first rotating cylinder 1-5, frequency conversion motor 1-6, transmission roller 1-7, elastic plate 1-8, bolt 1-9, frequency conversion motor 1-10, chain 1-11, guide wheel 1-12, cylinder 1-13, chain 1-14, frequency conversion motor 1-15, pressure wheel 1-16;

[0036] Figure 3 Middle: socket 1-17, lock block 1-18, connecting frame 4-5;

[0037] Figure 4 Middle: motor mounting bracket 1-19, shaft 1-20, pressing block 1-21;

[0038] Figure 5 Middle: guide rail 2-1, support platform 2-2, second rotating cylinder 2-3, stopper 2-4, buffer positioner 2-5;

[0039] Figure 6 Middle: top block 2-6, pressure block 2-7, buffer block 2-8;

[0040] Figure 7 Middle: template positioning assembly 4-1, linear moving pair 4-2, electric cabinet 4-3, connecting frame 4-5;

[0041] Figure 8 Middle: cylinder bracket 4-6, third rotating cylinder 4-7, gravity lock hook 4-8, supporting roller 4-9. DETAILED DESCRIPTION

[0042] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0043] refer to Figure 1 As shown, an alternating feeding system includes a guide rail assembly 2 and a mobile frame 1; the mobile frame 1 is driven by a motor assembly to move linearly on the guide rail assembly 2, and the guide rail assembly 2 is provided with a station positioning system for locking the mobile frame 1 at the feeding station; two sets of feeding subsystems are arranged side by side on the mobile frame 1, and as the mobile frame 1 moves back and forth, the two sets of feeding subsystems can alternately reach the feeding station and can be locked at the feeding station through the station positioning system.

[0044] The following is a more detailed description of each part.

[0045] 1) Mobile framework

[0046] refer to Figures 2-3 and Figure 6 As shown, the feeding subsystem includes a material cart 3 and a bonding template 5; the material cart is detachably connected to the mobile frame; the discharge end of the bonding template relative to the material cart is arranged on the outside of the mobile frame, and is connected to the bed for supporting the bonding template through a linear moving pair 4-2, and the linear moving pair includes a guide rail and a slider, the guide rail is fixedly connected to the bed, and the slider is fixedly connected to the template frame arranged at the lower end of the bonding template.

[0047] Two material carts 3 enter or move out of the mobile frame 1 from both sides of the mobile frame 1, respectively. The material cart 3 is provided with a rubber roll 6 and a corresponding lining cloth roll 7. When the lining cloth roll 7 rolls up the lining cloth, the rubber bonded with the lining cloth is led out to form a cloth storage bag 8. A set of feeding system supplies two identical rubbers at the same time, so the same material cart is provided with two rubber rolls 6 and two lining cloth rolls 7.

[0048] The trolley positioning assembly includes a fixed positioning block and a movable positioning block which are relatively arranged. One end of the movable positioning block is hinged to the movable frame, and the other end is hinged to the cylinder rod of the first rotating cylinder, so that the movable positioning block can swing up and down with the telescopic movement of the first rotating cylinder; the movable positioning block can drive the trolley to reach the fixed positioning block and lock the trolley during the swinging process, and can unlock the trolley after the movable positioning block is swung down.

[0049] The motor assembly includes a variable frequency motor and a transmission roller. The variable frequency motor is connected to the mobile frame through a motor mounting bracket. Under the drive of the variable frequency motor, the transmission roller rolls along the support platform on the guide rail assembly to drive the mobile frame to move. The motor mounting bracket is hinged on the mobile frame, and an elastic plate is also provided above the motor mounting bracket. One end of the elastic plate is fixedly connected to the mobile frame, and the other end is connected to the motor mounting bracket through a height adjustment bolt.

[0050] The rubber wrapped around the roller 1-7 is easy to wear, the roller 1-7 does not contact the support platform 2-2 of the guide rail assembly 2, and the mobile frame 1 cannot move. The plate 1-8 of the mounting bolt 1-9 is an elastic plate. Adjust the bolt 1-9 to move it downward, and push the variable frequency motor 1-6 mounting frame to rotate downward until the roller 1-7 contacts the support platform 2-2. When the rubber on the outside of the roller 1-7 is worn out, replace the roller.

[0051] Driven by variable frequency motors 1-6, the translation speed can be set in multiple modes. For example, when the material cart is unloaded or in manual mode, the translation speed can be increased to save time. In automatic mode, the translation speed can be slowed down to ensure smooth movement of the translation part and reduce the impact on the translation part. The mode switching only needs to be operated on the display screen, which is very simple and convenient. When feeding, the size of the rubber roll set on the material cart is constantly decreasing, that is, the weight of the translation part is constantly decreasing. The weight difference between the fully loaded and half-loaded material cart is large, but the translation speed is not affected by the change in the weight of the translation part. The translation speed runs uniformly at the set speed (except starting and stopping), and the impact on the translation part is small.

[0052] If cylinder drive is used, the translation speed in multiple modes cannot be set. After the throttle valves in the front and rear chambers of the cylinder are adjusted, the driving force of the cylinder rod to extend and return remains basically unchanged. When the material cart is unloaded and in manual mode, if you want to make the translation speed faster, you need to manually adjust the throttle valves in the front and rear chambers of the cylinder. Adjusting more or less requires experience, which is very troublesome. Multiple translation speeds cannot be set, and the translation speed requirements in multiple occasions cannot be met. With cylinder drive, the translation speed is easily affected by changes in the weight of the translation part and external resistance (dust on the translation surface, etc.). For example, the weight of the translation part changes greatly when the material cart is fully loaded and half loaded. The translation speed when the material cart is half loaded is much faster than that when the material cart is fully loaded, which has a greater impact on the translation part.

[0053] A mobile frame 1 is provided with two material carts 3 in the horizontal direction, and a guide rail assembly 2 is provided below the mobile frame 1; two sets of components for positioning the material cart 3 are provided in the middle section of the mobile frame 1, and a variable frequency motor 1-10 drives two rows of chains 1-11 to rotate, so that the two material carts 3 enter the mobile frame 1 from both sides of the mobile frame 1 respectively, and the guide wheels 1-12 provided on both sides of the mobile frame 1 guide the material cart 3. After the square steel pipe of the frame of the material cart 3 contacts the polyurethane block 1-2, the first rotating cylinder 1-5 drives the positioning block 1-4 to swing up and press the other side of the square steel pipe of the frame of the material cart 3, so that the positioning of the material cart 3 is completed, and the material cart 3 is connected to the mobile frame 1 as a whole.

[0054] The positioning process of the material cart 3 is completed by manual operation by workers. Specifically, after the rubber roll 6 set on the material cart 3 is used up, the worker manually switches the material cart mode to manual mode, manually rotates the cylinder control knob, and the first rotating cylinder 1-5 drives the positioning block 1-4 to swing down (the front cavity supplies air and the rear cavity exhausts air), and then manually rotates another corresponding knob and keeps pressing it until the frequency conversion motor 1-10 drives the material cart to move to the end of the mobile frame and then lets go, the material cart stops moving, and the worker pushes the material cart out of the mobile frame. To replace the fully loaded material cart with rubber rolls, the worker pushes the new material cart into the end of the mobile frame, then manually rotates the corresponding knob in the opposite direction and keeps pressing it until the variable frequency motor 1-10 drives the material cart to move near the polyurethane block 1-2 and then lets go, the material cart stops moving, then manually rotates the corresponding button in the opposite direction, the first rotating cylinder 1-5 drives the positioning block 1-4 to swing up (air supply in the back chamber, exhaust in the front chamber), during the swinging process, the positioning block 1-4 contacts the square steel pipe of the material cart frame, pushing the material cart to continue moving until the other side of the square steel pipe of the material cart frame contacts the polyurethane block 1-2, completing the positioning of the material cart, after positioning, the first rotating cylinder 1-5 still supplies air in the back chamber, only when the material cart is replaced, the material cart needs to be separated from the mobile frame, and the first rotating cylinder 1-5 drives the positioning block 1-4 to swing down (air supply in the front chamber, exhaust in the back chamber). The material replacement process is quite special and requires workers to participate all the time, so the material cart in and out of the mobile frame is set to manual mode, not automatic mode.

[0055] 2) Guide rail assembly

[0056] refer to Figures 4-5 As shown, the workstation positioning system includes two sets of frame positioning assemblies arranged along the moving direction of the mobile frame; each set of frame positioning assemblies includes a buffer locator and a swing-up locator, and the swing-up locator and the buffer locator are arranged opposite to each other; a positioning plate is provided in the center of the bottom of the mobile frame, and the mobile frame is locked by clamping the positioning plate between the swing-up locator and the buffer locator; the buffer locator includes a shell, and a buffer block and a pressure block are sequentially arranged in the shell, and the pressure block is connected to a top block extending out of the shell; the swing-up locator includes a second rotating cylinder and a stopper, one end of the stopper is hinged to the guide rail assembly, and the other end is hinged to the cylinder rod of the second rotating cylinder, and the swing-up locator can drive the mobile frame to reach the buffer locator and lock the mobile frame during the swing-up process, and the swing-up locator can unlock the mobile frame after it is swung down.

[0057] The frame positioning assembly also includes a positioning controller and three photoelectric switches arranged along the travel of the moving frame, the first photoelectric switch corresponds to the deceleration position, the second photoelectric switch corresponds to the stop position, and the third photoelectric switch corresponds to the positioning position; when the first photoelectric switch senses the positioning plate, the positioning controller is used to control the motor assembly to reduce the speed; when the second photoelectric switch senses the positioning plate, the positioning controller is used to control the motor assembly to stop; when the third photoelectric switch senses the positioning plate, it indicates that the feeding station has been reached.

[0058] The present invention also provides a positioning control method for an alternating feeding system, comprising the following steps:

[0059] When the first photoelectric switch senses the positioning plate, the motor assembly is controlled to reduce the rotation speed, so that the moving frame decelerates;

[0060] When the second photoelectric switch senses the positioning plate, the motor assembly is controlled to stop and delay (calibrate the delay time) to control the swing-lift positioner to lift, and the mobile frame continues to move under the action of inertia and stops at the corresponding position of the swing-lift positioner. At this time, the swing-lift positioner is controlled to lift, and the mobile frame is pushed to move slowly to the buffer positioner during the lifting process of the swing-lift positioner until the mobile frame completely presses the pressure block of the buffer positioner into the shell;

[0061] When the third photoelectric switch senses the positioning plate, the positioning is completed.

[0062] The delay time of the delay-controlled swing-up positioner is determined by prior calibration. The delay time may be slightly longer than the time from when the motor assembly stops to when the moving frame stops moving, but should not be shorter than this time.

[0063] When the first photoelectric switch senses the positioning plate 1-3 set on the moving frame, the translation part moves and slows down. When the second photoelectric switch senses the positioning plate 1-3, the frequency conversion motor 1-6 stops rotating. However, due to the heavy weight and inertia of the translation part (slow moving speed and small inertia), the translation part will continue to move a short distance at a low speed and then stop moving. Then the second rotating cylinder 2-3 of the positioning component set in the guide rail assembly 2 drives the stopper 2-4 to swing up (program control, according to the signal sensed by the second photoelectric switch, a delay of a few milliseconds). During the swinging process, the stopper 2-4 contacts one end of the positioning plate 1-3 of the moving frame 1 and pushes the translation part to move. The other end of the positioning plate 1-3 contacts Figure 7 The top plate 2-6 contacts the top plate 2-6 in the middle, the translation part continues to move, and the buffer block 2-8 buffers until the end face of the top plate 2-6 is flush with the A surface, that is, the positioning plate 1-3 contacts the A surface, the translation part stops moving, and the positioning of the mobile frame at this station is completed. The third photoelectric switch senses the positioning plate 1-3, indicating that the mobile frame has moved into place.

[0064] The guide rail assembly also includes a bed, a mobile frame, two material carts and two bonding templates that translate as a whole and are guided by a linear motion pair 4-2 on the bed. Specifically, the bonding template is arranged outside the mobile frame relative to the discharge end of the material cart, and is connected to the bed for supporting the bonding template through a linear motion pair, the linear motion pair includes a guide rail and a slider, the guide rail is fixedly connected to the bed, and the slider is fixedly connected to the template frame arranged at the lower end of the bonding template.

[0065] The bed will be described in more detail below.

[0066] refer to Figures 6 to 8 As shown, the bed is also provided with a template frame for connecting the two bonding templates in the two feeding subsystems, and the template frame is also provided with a connecting frame 4-5 for connecting the mobile frame 1; the mobile frame 1 is provided with a trolley positioning assembly for locking the trolley on the mobile frame corresponding to each trolley 3; under the coordinated action of the trolley positioning assembly and the connecting frame, the center line of the trolley coincides with the center line of the bonding template. The trolley positioning assembly ensures the centering of the trolley on the mobile frame, and the connecting frame ensures the centering of the bonding template and the mobile frame.

[0067] One end of the connecting frame is hinged on the template frame, and the other end is detachably connected to the mobile frame; the mobile frame is provided with a socket 1-17 for detachably connecting the connecting frame, and the socket 1-17 is provided with a vertical through groove, and the upper and lower ends of the vertical through groove are detachably connected with locking blocks 1-18.

[0068] A template positioning assembly 4-1 is also provided on the bed, and the template positioning assembly includes a cylinder bracket 4-6, a third rotating cylinder 4-7, a gravity lock hook 4-8 ​​and a support roller 4-9, and the support roller is hinged on the cylinder bracket; the cylinder bracket is fixedly connected to the bed, and the third rotating cylinder 4-7 is hinged on the cylinder bracket 4-6. The gravity lock hook 4-8 ​​is driven to telescope by the third rotating cylinder 4-7, and the bottom surface of the gravity lock hook 4-8 ​​is an arc surface and is tangent to the support roller.

[0069] The cylinder rod of the third rotating cylinder is retracted, and the gravity lock hook is in a horizontal state so that it can hook the bonding template (the hooked part of the bonding template is not shown in the figure), and the cylinder rod is extended, and the gravity lock hook tilts downward under the action of gravity to release the bonding template. During the extension and retraction process, the arc surface of the bottom surface of the gravity lock hook remains tangent to the support roller.

[0070] 3) Alternating feeding process

[0071] In the prior art, the vertically arranged feeding system, the lowest layer of the feeding system is generally composed of a material cart, a bonding template (including mechanical centering), and the other layers of the feeding system are generally composed of a material cart, a conveying template (including mechanical centering), an intermediate cloth storage bag, and a bonding template.

[0072] The specific implementation of the present invention uses an alternating feeding system in a tire forming device. Two sets of sub-feeding systems are arranged in a horizontal direction, which changes the traditional purely vertical arrangement, increases the spacing between multiple sets of feeding system templates arranged in the vertical direction, solves the problem of difficult equipment installation, debugging, and maintenance, and greatly increases the convenience and practicality of equipment operation. The alternating feeding system of this embodiment is arranged at the bottom layer, which is equivalent to simplifying a set of feeding systems, simplifying the conveying template (including mechanical centering) and the intermediate cloth storage bag, and shortening the overall length of the equipment, reducing the requirements for plant space.

[0073] The working process is divided into: one set of feeding system feeding process, the overall translation process of the mobile frame 1, two material carts 3 and two bonding templates 5, another set of feeding system feeding process, the overall reverse translation process of the mobile frame 1, two material carts 3 and two bonding templates 5, and these four major processes are repeated alternately.

[0074] Feeding process of feeding system: when it is necessary to feed drum 9 (drum 9 does not move), cylinder 1-13 drives two pressing wheels 1-16 to contact the lining cloth reel of current material cart 3, and frequency conversion motor 1-15 drives two pressing wheels 1-16 to rotate through chain transmission, thereby driving the lining cloth reel to rotate, winding up the lining cloth, realizing the guide of the rubber material, forming a cloth storage pocket 8 between the bonding template, and the rubber material reaches the front end of the bonding template 5 through the bonding template 5, and the suction cup set at the front end of the bonding template 5 sucks the material head and moves it to drum 5, and the material head is bonded to drum 5, and drum 5 rotates to bond the rubber material to drum 5, and the cutter set at the bonding template 5 automatically cuts the rubber material, and continues to bond, completing the feeding process of this rubber material. The bonding template 5 is provided with a rubber centering function, so that the rubber material is accurately bonded to the axial position of drum 5.

[0075] The rubber roll 6 can be understood as a rubber strip and a lining strip adhered together, and then rolled up on the shaft of the I-shaped wheel, such as Figure 1 As shown, the lining cloth is separated from the rubber material by the stripping roller and then rolled up on the shaft of the lining cloth reel (lining cloth reel). When the lining cloth reel rotates and the lining cloth is rolled up, the rubber material is led out. Basically, all existing rubber material leading-out methods are based on this principle and will not be described in detail here.

[0076] The overall translation process of the mobile frame 1, the two material carts 3 and the two bonding templates 5: the current material cart 3 has finished feeding, the second rotating cylinder 2-3 of the current positioning component set in the guide rail assembly 2 drives the stopper 2-4 to swing down, releasing the positioning of the mobile frame 1 at this station, and the frequency conversion motor 1-6 drives the roller 1-7 wrapped with rubber on the outside to rotate, and the roller 1-7 contacts with the supporting platform 2-2 (stationary) of the guide rail assembly 2. Under the action of friction, under the guidance of the linear moving pair 4-2 set on the bed 4, the mobile frame 1 and the two material carts 3 and the two bonding templates 5 are moved. The bonding template 5 translates together, and when it approaches the preset position, the second rotating cylinder 2-3 of another set of positioning components set on the guide rail assembly 2 stops moving and drives the stopper 2-4 to swing up. During the swinging process of the stopper 2-4, it contacts one end of the positioning plate 1-3 of the mobile frame 1, and is pushed by the stopper to move as a whole until the other end of the positioning plate 1-3 contacts the buffer positioner 2-5 of another set of positioning components of the guide rail assembly 2, completing the positioning of the mobile frame 1 at this station, and the center line of this set of feeding system (material cart and bonding template) coincides with the center line of the drum.

[0077] The preset positions include three positions: deceleration, stop and in-position. The corresponding positioning of the moving frame is provided with three photoelectric switches (not shown in the figure). When the first photoelectric switch senses the positioning plate 1-3 set on the moving frame, the translation part moves and slows down. When the second photoelectric switch senses the positioning plate 1-3, the variable frequency motor 1-6 stops rotating. However, due to the heavy weight and inertia of the translation part (slow moving speed and small inertia), the translation part will continue to move a short displacement at a low speed and then stop moving. Then the second rotating cylinder 2-3 of the positioning component set in the guide rail assembly 2 drives the stopper 2-4 to swing up (program control, according to the signal sensed by the second photoelectric switch, a delay of a few milliseconds). During the swinging process, the stopper 2-4 contacts with one end of the positioning plate 1-3 of the moving frame 1 and pushes the translation part to move. The other end of the positioning plate 1-3 is Figure 7 The top plate 2-6 contacts the top plate 2-6 in the middle, the translation part continues to move, and the buffer block 2-8 buffers until the end face of the top plate 2-6 is flush with the A surface, that is, the positioning plate 1-3 contacts the A surface, the translation part stops moving, and the positioning of the mobile frame at this station is completed. The third photoelectric switch senses the positioning plate 1-3, indicating that the mobile frame has moved into place.

[0078] The switching process of the feeding system, that is, the overall translation process of the mobile frame 1, the two material carts 3 and the two bonding templates 5, does not affect the work efficiency. After one set of feeding systems has finished feeding the drum 9, the mobile frame 1, the two material carts 3 and the two bonding templates 5 are translated as a whole. During the translation of the other set of feeding systems to the position that coincides with the center line of the drum 9, the drum 9 is performing other process steps. After the other set of feeding systems is translated to coincide with the center line of the drum 9, the drum 9 completes other process steps and can feed the drum 9 to complete the bonding of the rubber material on the drum 9. After the bonding is completed, the mobile frame 1, the two material carts 3 and the two bonding templates 5 are translated in the opposite direction as a whole, and the center line of the previous set of feeding systems is restored to coincide with the center line of the drum 9. The two sets of feeding systems are translated in this way to feed alternately, and the work efficiency is not affected during the translation process.

[0079] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0081] The above technical scheme is only a specific implementation method of the present invention. For those skilled in the art, it is easy to make various types of improvements or modifications based on the principles disclosed in the present invention, and it is not limited to the technical scheme described in the above specific embodiments of the present invention. Therefore, the above description is only preferred and does not have a restrictive meaning.

Claims

1. An alternating feeding system, characterized in that: It comprises a guide rail assembly and a mobile frame; the mobile frame is driven to move linearly on the guide rail assembly by a motor assembly, and a station positioning system for locking the mobile frame on the feeding station is provided on the guide rail assembly; two sets of feeding subsystems are arranged side by side on the mobile frame, and as the mobile frame moves back and forth, the two sets of feeding subsystems can alternately reach the feeding station and can be locked on the feeding station through the station positioning system.

2. The alternating feeding system according to claim 1, characterized in that: The feeding subsystem includes a material cart and a bonding template; the material cart is detachably connected to the mobile frame; the discharge end of the bonding template relative to the material cart is arranged on the outside of the mobile frame, and is connected to the bed for supporting the bonding template through a linear moving pair, the linear moving pair includes a guide rail and a slider, the guide rail is fixedly connected to the bed, and the slider is fixedly connected to the template frame arranged at the lower end of the bonding template.

3. The alternating feeding system according to claim 2, characterized in that: The two fitting templates in the two feeding subsystems on the bed are connected together through the template frame, and the template frame is also provided with a connecting frame for connecting the mobile frame; each material cart on the mobile frame is provided with a material cart positioning component for locking the material cart on the mobile frame; under the coordinated action of the material cart positioning component and the connecting frame, the center line of the material cart coincides with the center line of the fitting template.

4. The alternating feeding system according to claim 3, characterized in that: The trolley positioning assembly includes a fixed positioning block and a movable positioning block arranged relatively to each other. One end of the movable positioning block is hinged to the movable frame, and the other end is hinged to the cylinder rod of the first rotating cylinder, so that the movable positioning block can swing up and down with the telescopic movement of the first rotating cylinder; the movable positioning block can drive the trolley to the fixed positioning block and lock the trolley during the swinging process, and can unlock the trolley after the movable positioning block is swung down.

5. The alternating feeding system according to claim 3, characterized in that: The bed is also provided with a template positioning assembly, which includes a cylinder bracket, a rotating cylinder, a gravity lock hook and a supporting roller; the cylinder bracket is fixedly connected to the bed, and the rotatable cylinder is hinged on the cylinder bracket. The gravity lock hook is driven to telescope by the rotating cylinder, and the bottom surface of the gravity lock hook is an arc surface and is tangent to the supporting roller.

6. The alternating feeding system according to claim 2, characterized in that: The motor assembly includes a variable frequency motor and a transmission roller, and the variable frequency motor is connected to the moving frame through a motor mounting bracket; when the variable frequency motor drives the transmission roller to roll, under the action of rolling friction and under the guidance of the linear moving pair, the moving frame moves linearly on the guide rail assembly.

7. The alternating feeding system according to claim 6, characterized in that: The motor mounting bracket is hinged on the mobile frame, and an elastic plate is also arranged above the motor mounting bracket; one end of the elastic plate is fixedly connected to the mobile frame, and the other end is connected to the motor mounting bracket through a height adjustment bolt.

8. The alternating feeding system according to any one of claims 1 to 7, characterized in that: The workstation positioning system includes two sets of frame positioning assemblies arranged along the moving direction of the mobile frame; each set of frame positioning assemblies includes a buffer locator and a swing-up locator, and the swing-up locator and the buffer locator are arranged opposite to each other; a positioning plate is provided in the center of the bottom of the mobile frame, and the mobile frame is locked by clamping the positioning plate between the swing-up locator and the buffer locator; the buffer locator includes a shell, and a buffer block and a pressure block are arranged in sequence in the shell, and the pressure block is connected to a top block extending out of the shell; the swing-up locator includes a second rotating cylinder and a stopper, one end of the stopper is hinged to the guide rail assembly, and the other end is hinged to the cylinder rod of the second rotating cylinder. The swing-up locator can drive the mobile frame to the buffer locator and lock the mobile frame during the swing-up process, and the mobile frame can be unlocked after the swing-up locator is swung down.

9. The alternating feeding system according to claim 8, characterized in that: The frame positioning assembly also includes a positioning controller and three photoelectric switches arranged along the travel of the movable frame, the first photoelectric switch corresponds to the deceleration position, the second photoelectric switch corresponds to the stop position, and the third photoelectric switch corresponds to the positioning position; when the first photoelectric switch senses the positioning plate, the positioning controller is used to control the motor assembly to reduce the speed; when the second photoelectric switch senses the positioning plate, the positioning controller is used to control the motor assembly to stop; when the third photoelectric switch senses the positioning plate, it indicates that the feeding station has been reached.

10. A positioning control method for an alternating feeding system as claimed in claim 9, characterized in that: The following steps are involved: When the first photoelectric switch senses the positioning plate, the motor assembly is controlled to reduce the rotation speed, so that the moving frame decelerates; When the second photoelectric switch senses the positioning plate, the motor assembly is controlled to stop and the lifting of the swing-lift positioner is delayed. The mobile frame continues to move under the action of inertia and stops at the corresponding position of the swing-lift positioner. At this time, the swing-lift positioner is controlled to be lifted. During the lifting of the swing-lift positioner, the mobile frame is pushed to move slowly to the buffer positioner until the mobile frame completely presses the pressure block of the buffer positioner into the shell; When the third photoelectric switch senses the positioning plate, it indicates that the feeding station has been reached and the positioning is completed.

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