A method of manufacturing a tire

Abstract

The present application belongs to the field of manufacturing equipment of steel-belted tire, and particularly relates to a triangular rubber cold pasting machine and a use method. The cold pasting machine comprises a forming drum, a forming pasting disc, a workpiece transfer device, a bead turnover device and a steel bead conveying device. The bead turnover device is arranged on the left side or the right side of the forming pasting disc. A cushion plate stacking position is arranged at the rear of the forming pasting disc. A bead stacking position is arranged at the rear of the bead turnover device. A steel bead preparation station is arranged in front of the bead turnover device. The steel bead preparation station is provided with a horizontal supporting plate. During work, the workpiece transfer device grabs the steel bead on the horizontal supporting plate and transfers it to the forming pasting disc, grabs the bead on the first workpiece grabbing disc and transfers it to the bead stacking position, and grabs the cushion plate on the cushion plate stacking position and transfers it to the bead stacking position. The present application realizes the functions of automatic steel bead sleeving, automatic bead turnover, automatic bead grabbing and automatic bead stacking, and can effectively reduce the physical labor consumption and improve the manufacturing efficiency of the bead.

Description

Technical Field

[0001] This invention belongs to the field of manufacturing equipment for tires with steel wire rings, specifically relating to a triangular rubber cold-applying machine and its usage method. Background Technology

[0002] In existing tire manufacturing processes with steel wire bead systems, the initial bead requires attaching triangular rubber strips around the steel wire bead. If the production quantity of tires in a batch is small, a cold-applied method is typically used. The existing cold-applied process includes the following steps: The steel wire bead is placed in the center of the forming and bonding disc; triangular rubber strips are placed on the forming drum; the forming drum is moved forward; when the forming drum touches the center of the forming and bonding disc, it expands, causing the triangular rubber strips to flip up and its inner diameter to increase, thus fitting onto the outer edge of the steel wire bead to form the initial bead. The forming drum then returns to its initial position and is removed from the center of the forming and bonding disc, completing the production of one initial bead. The removed beads are usually laid flat and stacked to prevent deformation. See also... Figure 4 Because of the shape of the triangular rubber bead, one side is conical and the other is flat. When stacking beads, the conical side must face upwards, and a rigid pad must be placed between the beads to ensure the pad supports the bottom plane of the bead, thus preventing deformation of the rubber body. In existing triangular rubber cold-applying processes, installing the steel wire ring, unloading the bead from the forming and bonding tray, and stacking the bead all require manual operation. To reduce the labor intensity of operators, designing an automatic cold-applying machine that automatically installs, unloads, and stacks the steel wire ring has become the goal of technological innovation in this field. Summary of the Invention

[0003] The purpose of this invention is to provide a triangular adhesive cold-applying machine that can automatically install steel wire rings, automatically unload tire bead, automatically flip tire beads, and automatically stack tire bead.

[0004] The technical solutions for achieving the above objectives include the following:

[0005] A triangular adhesive cold-applying machine includes a forming drum and a forming and bonding disc positioned directly in front of the forming drum. The forming and bonding disc has clearance strip holes pointing towards its center. It also includes a workpiece transfer device, a tire bead flipping device, and a wire bead conveying device. The tire bead flipping device is located on the left or right side of the forming and bonding disc. A pad stacking position is located behind the forming and bonding disc, and a tire bead stacking position is located behind the tire bead flipping device. A wire bead preparation station is located in front of the tire bead flipping device.

[0006] The wire coil preparation station is equipped with a horizontal support plate. The wire coil conveying device conveys the wire coils one by one onto the horizontal support plate. The horizontal support plate is provided with clearance strip holes pointing towards the center of the horizontal support plate.

[0007] The tire bead flipping device includes a rotating arm and a first workpiece gripper. The rotating arm includes a vertical rotating shaft and a horizontal cantilever mounted on the vertical rotating shaft. The vertical rotating shaft is rotatably mounted on one side of the forming and bonding disc. The first workpiece gripper is connected to the end of the horizontal cantilever. During operation, the first workpiece gripper intermittently oscillates around the vertical rotating shaft in the horizontal plane. The first workpiece gripper includes a first base plate and a first steel ring gripping mechanism mounted on the first base plate. The first base plate is vertically arranged, and its center is at the same height as the center of the forming and bonding disc. The center of the forming and bonding disc is equidistant from the vertical rotating shaft. The back of the first base plate is connected to the end of the horizontal cantilever. The first steel ring gripping mechanism includes a guide, a centering pneumatic gripper, and a locking block. The guide includes at least three linear guide rails deployed on the front of the first base plate. The linear guide rails are radially spaced around the center of the first base plate. The number of locking blocks is the same as the number of linear guide rails. The locking blocks are slidably mounted on the linear guide rails. The centering pneumatic gripper is mounted on the first base plate. The centering pneumatic gripper is connected to the locking block and drives the locking block to move synchronously to realize the opening and closing of the locking block.

[0008] During operation, the workpiece transfer device grabs the wire ring on the horizontal pallet and transfers it to the forming and bonding plate, grabs the tire bead on the first workpiece grab plate and transfers it to the tire bead stacking position, and grabs the pad at the pad stacking position and transfers it to the tire bead stacking position.

[0009] Furthermore, the workpiece transfer device includes an XYZ three-axis slide table and a second workpiece gripper. The X-axis of the XYZ three-axis slide table is arranged in the left-right direction, the Y-axis is arranged in the front-back direction, and the Z-axis is arranged in the vertical direction. The second workpiece gripper includes a second base plate and a second steel ring gripping mechanism and a pad gripping mechanism mounted on the second base plate. The back center of the second base plate is hinged to the bottom of the Z-axis, and the hinge shaft is arranged in the left-right direction. A rotation drive mechanism is installed between the second base plate and the Z-axis. The second steel ring gripping mechanism has the same structure as the first steel ring gripping mechanism. The pad gripping mechanism includes several vacuum suction cups, which are spaced around the periphery of the second base plate.

[0010] Furthermore, the rotation drive mechanism is a linear cylinder, which is mounted on the Z-axis, and the cylinder rod is connected to the second base plate.

[0011] Furthermore, the vacuum suction cups are provided in three sets and are evenly spaced around the perimeter of the second base plate.

[0012] Furthermore, the linear guide rails are radially and evenly spaced around the center of the second base plate.

[0013] Furthermore, the number of linear guides is 3.

[0014] Furthermore, a rubber pad is provided on the outer side of the card block (the side away from the center of the first seat plate).

[0015] When the above-mentioned triangular adhesive cold-applying machine is working, when the locking block in the steel ring gripping mechanism opens, pressure is generated on the inner wall of the steel ring. The friction between the outer wall of the locking block and the inner wall of the steel wire ring grips the steel wire ring (tire ring). When the locking block closes, the steel wire ring (tire ring) can be released. The function of the clearance slot is to facilitate the movement of the locking block within it. The second workpiece gripping plate is driven by the XYZ three-axis slide table to move in the horizontal plane and move up and down. The vacuum suction cups around the second seat plate realize the suction and release of the pad. The rotation drive mechanism drives the second seat plate to rotate up and down around the hinge axis, thereby realizing the conversion of the steel wire ring or tire ring from a horizontal state to a vertical state.

[0016] The present invention further provides a method of using the above-mentioned triangular adhesive cold bonding machine, comprising the following steps:

[0017] Step 1: Install triangular rubber on the forming drum, and the wire ring conveying device will convey a wire ring onto the horizontal support plate.

[0018] Step 2: The workpiece transfer device transfers the wire ring from the horizontal pallet to the forming and bonding tray.

[0019] Step 3: The workpiece transfer device transfers one of the pads from the pad stacking position to the tire bead stacking position.

[0020] Step 4: The forming drum delivers the triangular adhesive strips fitted on it to the forming and bonding plate, and then fits the triangular adhesive strips onto the wire ring to form a tire bead. The forming drum then retracts and resets.

[0021] Step 5: The tire bead flipping device rotates 180° in the horizontal plane and fits onto the front of the forming and fitting plate. After grabbing the tire bead on the forming and fitting plate, the tire bead flipping device rotates 180° in the horizontal plane back to its original position, so that the conical surface of the tire bead faces forward.

[0022] Step 6: The workpiece transfer device moves to the front of the tire bead flipping device and grabs the tire bead on it. Then, the tire bead is transferred to the tire bead stacking position and released onto the pad.

[0023] Step 7: Repeat steps 1 through 6.

[0024] The above-described method of use, within one work cycle, from gripping the wire ring to releasing the tire ring, the working path of the second workpiece gripper disc driven by the XYZ three-axis slide table is scientifically set, the mechanical operation efficiency is high, and the failure rate can be effectively reduced.

[0025] The triangular adhesive cold-applying machine of the present invention realizes the functions of automatic setting of steel wire rings, automatic flipping of tire bead, automatic gripping of tire bead, and automatic stacking of tire bead, which can effectively reduce the consumption of manual labor and improve the efficiency of tire bead manufacturing.

[0026] For those skilled in the art, the wire coil conveying device described in this case can be, but is not limited to, the wire coil conveying device for a cold bonding machine described in Chinese Patent (Application) No. 2024233105018. Furthermore, methods for setting different motion paths to avoid interference during relative movement of the mechanisms, and setting corresponding control circuits according to the mechanism's action process, are common technical means in the art and will not be elaborated upon here. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the triangular adhesive cold-applying machine as an example.

[0028] Figure 2 This is a partial structural diagram of the workpiece transfer device in the embodiment;

[0029] Figure 3 This is a schematic diagram showing the positional relationship between the tire bead flipping device and the molding and bonding disc in an embodiment.

[0030] Figure 4 This is a schematic diagram of the cross-sectional structure of the formed tire bead.

[0031] In the diagram, 1. Workpiece transfer device; 1-1. XYZ three-axis slide table; 1-1-1. Z-axis; 1-2. Second seat plate; 1-2-1. Second steel ring gripping mechanism; 1-2-2. Vacuum suction cup; 1-3. Hinge rotating shaft; 1-4. Linear cylinder; 2. Tire bead flipping device; 2-1. First seat plate; 2-1-1. First steel ring gripping mechanism; 2-2. Vertical rotating shaft; 2-3. Horizontal cantilever; 3. Horizontal support plate; 4. Steel wire ring conveying device; 5. Pad plate; 6. Tire bead; 7. Forming drum; 8. Steel wire ring; 9. Forming and bonding plate. Detailed Implementation

[0032] The present invention will be specifically described below with reference to the embodiments.

[0033] See Figures 1 to 3 A triangular adhesive cold-applying machine includes a forming drum 7, a forming and bonding disc 9 positioned directly in front of the forming drum 7, a workpiece transfer device 1, a tire bead flipping device 2, and a wire ring conveying device 4. The forming and bonding disc 9 has clearance strip holes pointing towards its center. The tire bead flipping device 2 is located on the right side of the forming and bonding disc 9. A pad stacking position is located behind the forming and bonding disc 9, and a tire bead stacking position is located behind the tire bead flipping device 2. A wire ring preparation position is located in front of the tire bead flipping device 2.

[0034] The wire ring preparation station is equipped with a horizontal support plate 3. In this embodiment, a wire ring conveying device 4 for a cold-applied machine, which is described in Chinese Patent Application No. 2024233105018, is used. The wire ring conveying device 4 is located in front of the horizontal support plate 3. The wire ring conveying device 4 conveys the wire rings 8 one by one onto the horizontal support plate 3. The horizontal support plate 3 is provided with clearance strip holes pointing towards the center of the horizontal support plate 3.

[0035] The tire bead flipping device 2 includes a rotating arm and a first workpiece gripper. The rotating arm includes a vertical rotating shaft 2-2 and a horizontal cantilever 2-3 mounted on the vertical rotating shaft 2-2. The vertical rotating shaft 2-2 is rotatably mounted on the right side of the forming and bonding disc 9. The first workpiece gripper is connected to the end of the horizontal cantilever 2-3. The first workpiece gripper includes a first seat plate 2-1 and a first steel ring gripping mechanism 2-1-1 mounted on the first seat plate 2-1. The first seat plate 2-1 is vertically arranged, and its center is at the same height as the center of the forming and bonding disc 9. The center of the first seat plate 2-1, the center of the forming and bonding disc 9, and the vertical rotating shaft 2-2 are equidistant, ensuring that the first workpiece turntable swings 18 rpm around the vertical rotating shaft 2-2 in the horizontal plane. After reaching 0°, the forming and bonding disc 9 can be aligned. The back of the first base plate 2-1 is connected to the end of the horizontal cantilever 2-3. The first steel ring gripping mechanism 2-1-1 includes a guide, a centering pneumatic gripper, and a locking block. The guide consists of three linear guide rails deployed on the front of the first base plate 2-1. The three linear guide rails are radially and evenly spaced around the center of the first base plate 2-1. There are three locking blocks, which can be slidably installed on the three linear guide rails. The centering pneumatic gripper is installed on the first base plate 2-1. The centering pneumatic gripper is connected to the locking block and drives the locking block to move synchronously to realize the opening and closing of the locking block. In this embodiment, a rubber pad is provided on the outer side of the locking block (the side away from the center of the first base plate 2-1) to increase friction and reduce damage to the steel wire ring.

[0036] The workpiece transfer device 1 includes an XYZ three-axis slide 1-1 and a second workpiece gripper. The XYZ three-axis slide 1-1 is located at the top of the cold bonding machine. The X-axis is set along the left-right direction, the Y-axis is set along the front-back direction and supported by the bottom bracket, and the Z-axis 1-1-1 is set along the vertical direction. The second workpiece gripper includes a second base plate 1-2 and a second steel ring gripping mechanism 1-2-1 and a pad gripping mechanism mounted on the second base plate 1-2. The center of the back of the second base plate 1-2 is hinged to the bottom of the Z-axis 1-1-1. The hinge shaft 1-3 is set along the left-right direction. A linear cylinder 1-4 is connected between the seat plate 1-2 and the Z-axis 1-1-1. The linear cylinder 1-4 is mounted on the Z-axis 1-1-1, and the cylinder rod is connected to the second seat plate 1-2. The linear cylinder 1-4 drives the second seat plate 1-2 to rotate up and down around the hinge shaft 1-3. The second steel ring gripping mechanism 1-2-1 has the same structure as the first steel ring gripping mechanism 2-1-1. The pad gripping mechanism includes 3 sets of vacuum suction cups. Each set of vacuum suction cups contains two vacuum suction cups 1-2-2. The 3 sets of vacuum suction cups are evenly distributed around the perimeter of the second seat plate 1-2.

[0037] During operation, the workpiece transfer device 1 grabs the wire ring 8 on the horizontal pallet 3 and transfers it to the forming and bonding plate 9, grabs the tire bead on the first workpiece grab plate and transfers it to the tire bead stacking position, and grabs the pad 5 at the pad stacking position and transfers it to the tire bead stacking position. When the locking block in the steel ring gripping mechanism opens, it exerts pressure on the inner wall of the steel wire ring 8. The friction between the rubber pad on the outer wall of the locking block and the inner wall of the steel wire ring 8 achieves the gripping of the steel wire ring 8 (tire ring 6). When the locking block closes, the steel wire ring 8 (tire ring 6) can be released. The clearance slot facilitates the movement of the locking block within it. The second workpiece gripping plate is driven by the XYZ three-axis slide table 1-1 to achieve horizontal movement and vertical lifting. The vacuum suction cups 1-2-2 around the second seat plate 1-2 achieve the suction and release of the pad plate 5. The linear cylinder 1-4 drives the second seat plate 1-2 to rotate up and down around the hinge shaft 1-3, thereby realizing the conversion of the steel wire ring 8 or tire ring 6 from a horizontal state to a vertical state.

[0038] Based on the above-mentioned triangular adhesive cold-applied machine, this embodiment provides a method of use, including the following steps:

[0039] Step 1: Install triangular rubber on the forming drum 7, and the wire ring conveying device 4 conveys a wire ring 8 onto the horizontal support plate 3.

[0040] Step 2: The second steel ring gripping device of the workpiece transfer device 1 grips the steel wire ring 8 from the horizontal support plate 3. The linear cylinder 1-4 drives the second seat plate 1-2 to flip upward, so that the steel wire ring 8 changes from a horizontal state to a vertical state. The workpiece transfer device 11 transfers the steel wire ring to the forming and bonding plate 9 and releases the steel wire ring 8, so that the steel wire ring 8 is fitted on the forming and bonding plate 9.

[0041] Step 3: The workpiece transfer device 1 uses the vacuum suction cup 1-2-2 to grab a pad 5 on the pad stacking position and transfer it to the tire bead stacking position, and then releases the pad 5.

[0042] Step 4: The forming drum 7 delivers the triangular adhesive strips fitted on it to the forming and bonding plate 9, and then fits the triangular adhesive strips onto the wire ring to form the tire bead 6. The forming drum 7 then retracts and resets.

[0043] Step 5: The tire bead flipping device 2 swings 180° in the horizontal plane and fits onto the front of the forming and fitting plate 9. After the first steel ring gripping mechanism 2-1-1 opens to grip the tire bead 6 (steel wire ring) on ​​the forming and fitting plate 9, the tire bead flipping device 2 rotates 180° in the horizontal plane back to its original position, so that the conical surface of the tire bead 6 faces forward.

[0044] Step 6: The workpiece transfer device 1 moves to the front of the tire bead flipping device 2 and grabs the tire bead 6 on it (the first steel bead grabbing mechanism 2-1-1 releases the tire bead 6, and the second steel bead grabbing mechanism 1-2-1 grabs the tire bead 6). The linear cylinder 1-4 drives the second seat plate 1-2 to flip downward, so that the tire bead 6 changes from a vertical state to a horizontal state (conical surface facing up). The tire bead 6 is transferred to the tire bead stacking position above the tire bead stacking position and released onto the pad plate 5.

[0045] Step 7: Repeat steps 1 through 6.

[0046] The triangular adhesive cold-applying machine of this embodiment can automatically convey steel wire rings, automatically pack steel wire rings, automatically flip tire bead 6, and automatically stack tire bead 6, reducing the burden of manpower and effectively improving tire production efficiency. The workpiece transfer device 11 has a reasonable route setting, the whole machine occupies a small area, and has strong practicality, making it suitable for small-batch adhesive application occasions.

Claims

1. A triangular adhesive cold-applying machine, comprising a forming drum and a forming and bonding disc disposed directly in front of the forming drum, the forming and bonding disc having clearance strip holes pointing towards the center of the forming and bonding disc, characterized in that, It also includes a workpiece transfer device, a tire bead flipping device, and a wire ring conveying device. The bead flipping device is located on the left or right side of the forming and bonding disc. There is a pad stacking position behind the forming and bonding disc, a bead stacking position behind the bead flipping device, and a wire ring preparation position in front of the bead flipping device. The wire ring preparation station is equipped with a horizontal support plate. The wire ring conveying device conveys the wire rings one by one onto the horizontal support plate. The horizontal support plate is equipped with clearance strip holes pointing to the center of the horizontal support plate. The tire bead flipping device includes a rotating arm and a first workpiece gripper. The rotating arm includes a vertical rotating shaft and a horizontal cantilever mounted on the vertical rotating shaft. The vertical rotating shaft is rotatably mounted on one side of the forming and bonding disc. The first workpiece gripper is connected to the end of the horizontal cantilever. During operation, the first workpiece gripper intermittently oscillates around the vertical rotating shaft in the horizontal plane. The first workpiece gripper includes a first base plate and a first steel ring gripping mechanism mounted on the first base plate. The first base plate is vertically arranged, and its center is at the same height as the center of the forming and bonding disc. The center of the forming and bonding disc is equidistant from the vertical rotating shaft. The back of the first base plate is connected to the end of the horizontal cantilever. The first steel ring gripping mechanism includes a guide, a centering pneumatic gripper, and a locking block. The guide includes at least three linear guide rails deployed on the front of the first base plate. The linear guide rails are radially spaced around the center of the first base plate. The number of locking blocks is the same as the number of linear guide rails. The locking blocks are slidably mounted on the linear guide rails. The centering pneumatic gripper is mounted on the first base plate. The centering pneumatic gripper is connected to the locking block and drives the locking block to move synchronously to realize the opening and closing of the locking block. During operation, the workpiece transfer device grabs the wire ring on the horizontal pallet and transfers it to the forming and bonding plate, grabs the tire bead on the first workpiece grab plate and transfers it to the tire bead stacking position, and grabs the pad at the pad stacking position and transfers it to the tire bead stacking position.

2. The triangular adhesive cold-applying machine according to claim 1, characterized in that, The workpiece transfer device includes an XYZ three-axis slide and a second workpiece gripper. The X-axis of the XYZ three-axis slide is set along the left-right direction, the Y-axis is set along the front-back direction, and the Z-axis is set along the vertical direction. The second workpiece gripper includes a second base plate and a second steel ring gripping mechanism and a pad gripping mechanism mounted on the second base plate. The back center of the second base plate is hinged to the bottom of the Z-axis, and the hinge shaft is set along the left-right direction. A rotation drive mechanism is installed between the second base plate and the Z-axis. The second steel ring gripping mechanism has the same structure as the first steel ring gripping mechanism. The pad gripping mechanism includes several vacuum suction cups, which are spaced around the periphery of the second base plate.

3. The triangular adhesive cold-applying machine according to claim 2, characterized in that, The rotation drive mechanism is a linear cylinder, which is mounted on the Z-axis, and the cylinder rod is connected to the second base plate.

4. The triangular adhesive cold-applying machine according to claim 2, characterized in that, The vacuum suction cups are arranged in three groups and are evenly spaced around the perimeter of the second base plate.

5. The triangular adhesive cold-applying machine according to claim 1, characterized in that, The linear guide rails are evenly spaced radially around the center of the first base plate.

6. The triangular adhesive cold-applying machine according to claim 1, characterized in that, The number of linear guides is 3.

7. The triangular adhesive cold-applying machine according to claim 1, characterized in that, The outer side of the card block is provided with a rubber pad.

8. A method of using a triangular adhesive cold-applying machine as described in any one of claims 1 to 7, characterized in that, Includes the following steps: Step 1: Install triangular rubber on the forming drum, and the wire ring conveying device will convey a wire ring onto the horizontal support plate. Step two: The workpiece transfer device transfers the wire ring from the horizontal pallet to the forming and bonding tray. Step three: The workpiece transfer device transfers one of the pads from the pad stacking position to the tire bead stacking position. Step four: The forming drum moves the triangular adhesive strips mounted on it to the forming and bonding plate, and then mounts the triangular adhesive strips onto the wire ring to form the tire bead. The forming drum then retracts to its original position. Step 5: The bead flipping device rotates 180° horizontally to fit onto the front of the forming and bonding plate. After removing the bead from the forming and bonding plate, the bead flipping device rotates 180° horizontally back to its original position, so that the conical surface of the bead faces forward. Step six: The workpiece transfer device moves to the front of the tire bead flipping device and grabs the tire bead on it. Then, the tire bead is transferred to the tire bead stacking position and released onto the pad. Step 7: Repeat steps 1 through 6.

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