Tire sidewall turn-up mechanism for tire turn-up forming drum

Abstract

The utility model discloses a tire side turn-up mechanism for a tire turn-up forming drum, which relates to the technical field of tire forming and comprises a tire side turn-up machine, the bottom of the tire side turn-up machine is movably connected with a sliding rail base, a left sliding frame is movably mounted on the left side of the sliding rail base, and a right sliding frame is movably mounted on the right side of the sliding rail base. And a forming drum reverse wrapping mechanism is arranged on one side of the left sliding frame, and a pleat flattening mechanism is fixedly installed at the top of the middle end of the sliding rail base. The air cylinder is arranged to be matched with the telescopic rod, the right sliding frame is made to be close to the left sliding frame on the sliding rail base, the expansion air bag enters an opening of a tire airtight layer to be expanded, the tire airtight layer is reversely wrapped to the surface of the positioning steel wire ring assembly, and the working efficiency is effectively improved; and the forming drum is driven to rotate and is matched with the movable roller and the flat pleat roller to flatten the inner liner of the tire, so that the anti-package quality of the tire is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tire forming, in particular to a bead side reverse wrapping mechanism for a tire reverse wrapping forming drum. Background Art

[0002] A tire forming drum is an important device in tire processing, which is used to attach tire rubber to its surface and press the tire rubber located axially outside the bead on the inflated tire rubber located axially inside the bead on the surface of the forming drum, that is, reverse wrapping. The reverse wrapping process is mainly realized by a reverse wrapping mechanism. In the traditional reverse wrapping mechanism, the reverse wrapping roller is at the front end of the reverse wrapping rod, and a single rolling pressure is used to roll the bead side.

[0003] Chinese Patent Publication No. CN215152061U, a bead side reverse wrapping mechanism for a tire reverse wrapping forming drum, the technical solution provided by this patent document is: including a reverse wrapping rod, a swing arm extending radially along the reverse wrapping rod is arranged on one side of the first end of the reverse wrapping rod, the swing arm is rotatably connected to the first end of the reverse wrapping rod, a first rolling wheel and a second rolling wheel are respectively installed at both ends of the swing arm, and the first rolling wheel and the second rolling wheel are arranged diagonally. By arranging the first rolling wheel and the second rolling wheel diagonally on the swing arm, when the bead side part is reverse wrapped, the second rolling wheel makes up for the gap between the rolling wheels caused by the upward rolling of the first rolling wheel, overcomes the problem of air bubbles generated due to the insufficient rolling of the bead side when the single rolling wheel rolls upward, makes the rolling of the tire bead side more compact, and improves the quality of tire reverse wrapping forming.

[0004] In order to solve the problem that in the process of reverse wrapping the tire bead side of the existing device, when the rolling wheel rolls upward, a large gap is formed between the rolling wheels, which easily causes the problem of insufficient rolling of the bead side and generates air bubbles, affecting the quality of tire reverse wrapping forming. The existing technology is to arrange the first rolling wheel and the second rolling wheel diagonally on the swing arm. When the bead side part is reverse wrapped, the second rolling wheel makes up for the gap between the rolling wheels caused by the upward rolling of the first rolling wheel, and overcomes the problem of air bubbles generated due to the insufficient rolling of the bead side when the single rolling wheel rolls upward. However, there will still be a situation where the reverse wrapping speed is relatively slow, which in turn leads to the problem of reduced work efficiency. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a bead side reverse wrapping mechanism for a tire reverse wrapping forming drum to solve the problems put forward in the above background art.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A bead side reverse wrapping mechanism for a tire reverse wrapping forming drum, including a bead side reverse wrapping machine, the bottom of the bead side reverse wrapping machine is movably connected to a slide rail base, a left sliding frame is movably installed on the left side of the slide rail base, and a right sliding frame is movably installed on the right side of the slide rail base.

[0008] On one side of the left sliding frame, there is an assembly for turning the forming drum inside out, and on the top of the middle part of the slide rail base, a pleating mechanism is fixedly installed.

[0009] The assembly for turning the forming drum inside out includes a driving motor fixedly installed on one side of the left sliding frame. The output end of the driving motor is fixedly connected to a first connecting rod. On the surface of the first connecting rod, an expansion airbag is fixedly installed. The output end of the first connecting rod is fixedly connected to a compression rod, and on the surface of the compression rod, a forming drum is fixedly installed.

[0010] A further improvement of the technical solution of the present utility model is that: the first connecting rod is arranged on the other side of the left sliding frame. A tire airtight layer is sleeved on the surface of the forming drum, and on both sides of the surface of the tire airtight layer, positioning wire bead assemblies are fixedly installed. The forming drum rotates through the first connecting rod, the driving motor and the compression rod.

[0011] A further improvement of the technical solution of the present utility model is that: on the surface of the right sliding frame, a second connecting rod is fixedly connected. Inside the second connecting rod, a storage groove is formed, and the storage groove is adapted to the compression rod. The second connecting rod is connected to the first connecting rod through the storage groove and the compression rod.

[0012] A further improvement of the technical solution of the present utility model is that: on the surface of the second connecting rod, an expansion airbag is also fixedly installed. On the surface of the expansion airbag, air holes are provided. The expansion airbag enters the opening of the tire airtight layer, and then gas is conveyed into its interior through the air holes to make it expand, so as to turn the tire airtight layer inside out to the surface of the positioning wire bead assembly.

[0013] A further improvement of the technical solution of the present utility model is that: at the bottom of the left sliding frame, a cylinder is fixedly installed. The output end of the cylinder is fixedly connected to a telescopic rod, and the other end of the telescopic rod is connected to the bottom surface of the right sliding frame. The cylinder makes the right sliding frame translate towards the left sliding frame through the telescopic rod.

[0014] A further improvement of the technical solution of the present utility model is that: the pleating mechanism includes a support frame welded to the top of the middle part of the slide rail base. The support frame is used to support the whole pleating mechanism.

[0015] A further improvement of the technical solution of the present utility model is that: on the top of the support frame, a movable roller is movably installed. The surface of the movable roller is covered with a pleating roller. The forming drum cooperates with the movable roller and the pleating roller to flatten the tire airtight layer on its surface.

[0016] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is:

[0017] The present utility model provides a sidewall reverse wrapping mechanism for a tire reverse wrapping forming drum. By arranging a cylinder in cooperation with a telescopic rod, the right sliding frame slides leftward on the slide rail base towards the left sliding frame, and the expansion airbag enters into the opening of the tire airtight layer. Then, gas is conveyed into its interior to make it expand, and the tire airtight layer is reversely wrapped onto the surface of the positioning bead wire assembly. This device can quickly reverse wrap the tire sidewall, effectively improving the working efficiency.

[0018] The present utility model provides a sidewall reverse wrapping mechanism for a tire reverse wrapping forming drum. By arranging a driving motor in cooperation with a first connecting rod, it drives the forming drum to rotate through a compression rod, and then in cooperation with a movable roller and a flat folding roller, the tire airtight layer on the surface of the forming drum is flattened, preventing poor effect when reverse wrapping the tire sidewall, and effectively improving the quality of tire reverse wrapping. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front view structural schematic diagram of the present utility model;

[0020] Figure 2 is a cross-sectional structural schematic diagram of the left sliding frame of the present utility model;

[0021] Figure 3 is a cross-sectional structural schematic diagram of the right sliding frame of the present utility model;

[0022] Figure 4 is a front view structural schematic diagram of the flat folding mechanism of the present utility model.

[0023] In the figure: 1, sidewall reverse wrapping machine; 11, slide rail base; 12, left sliding frame; 13, right sliding frame; 2, forming drum reverse wrapping mechanism; 21, driving motor; 22, first connecting rod; 23, expansion airbag; 24, compression rod; 25, forming drum; 26, second connecting rod; 27, storage groove; 28, cylinder; 29, telescopic rod; 3, flat folding mechanism; 31, support frame; 32, movable roller; 33, flat folding roller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further describes the present utility model in detail with reference to embodiments: Embodiment 1

[0025] As Figures 1-3As shown in the figure, this embodiment provides a sidewall reverse wrapping mechanism for a tire reverse wrapping forming drum, including a sidewall reverse wrapping machine 1. The bottom of the sidewall reverse wrapping machine 1 is movably connected to a slide rail base 11. A left sliding frame 12 is movably installed on the left side of the slide rail base 11, and a right sliding frame 13 is movably installed on the right side of the slide rail base 11. A forming drum reverse wrapping mechanism 2 is arranged on one side of the left sliding frame 12. A flat folding mechanism 3 is fixedly installed at the top of the middle end of the slide rail base 11. The forming drum reverse wrapping mechanism 2 includes a driving motor 21, which is fixedly installed on one side of the left sliding frame 12. The output end of the driving motor 21 is fixedly connected to a first connecting rod 22. An expansion airbag 23 is fixedly installed on the surface of the first connecting rod 22. The output end of the first connecting rod 22 is fixedly connected to a compression rod 24. A forming drum 25 is fixedly installed on the surface of the compression rod 24. The first connecting rod 22 is arranged on the other side of the left sliding frame 12. A tire airtight layer is sleeved on the surface of the forming drum 25, and positioning wire bead assemblies are fixedly installed on both sides of the surface of the tire airtight layer. The forming drum 25 rotates through the first connecting rod 22, the driving motor 21, and the compression rod 24. A second connecting rod 26 is fixedly connected to the surface of the right sliding frame 13. A receiving groove 27 is opened inside the second connecting rod 26, and the receiving groove 27 is adapted to the compression rod 24. The second connecting rod 26 is connected to the first connecting rod 22 through the receiving groove 27 and the compression rod 24. An expansion airbag 23 is also fixedly installed on the surface of the second connecting rod 26. Air holes are arranged on the surface of the expansion airbag 23. The expansion airbag 23 enters the opening of the tire airtight layer, and then gas is conveyed into its interior through the air holes to make it expand, so as to reverse wrap the tire airtight layer to the surface of the positioning wire bead assembly. A cylinder 28 is fixedly installed at the bottom of the left sliding frame 12. The output end of the cylinder 28 is fixedly connected to a telescopic rod 29, and the other end of the telescopic rod 29 is connected to the bottom surface of the right sliding frame 13. The cylinder 28 makes the right sliding frame 13 translate leftward towards the left sliding frame 12 through the telescopic rod 29. By setting the cylinder 28 in cooperation with the telescopic rod 29, the right sliding frame 13 approaches the left sliding frame 12 on the slide rail base 11, and the expansion airbag 23 enters the opening of the tire airtight layer, and then gas is conveyed into its interior to make it expand, so as to reverse wrap the tire airtight layer to the surface of the positioning wire bead assembly. This device can quickly reverse wrap the tire sidewall, effectively improving the work efficiency. Embodiment 2

[0026] As Figure 4As shown, on the basis of Embodiment 1, the present utility model provides a technical solution: Preferably, the flat pleat mechanism 3 includes a support frame 31, which is welded to the middle top of the slide rail base 11. The support frame 31 is used to support the whole flat pleat mechanism 3. An activity roller 32 is movably installed on the top of the support frame 31, and a flat pleat roller 33 is covered on the surface of the activity roller 32. The forming drum 25 cooperates with the activity roller 32 and the flat pleat roller 33 to flatten the tire airtight layer on its surface. By setting the drive motor 21 to cooperate with the first connecting rod 22, it drives the forming drum 25 to rotate through the compression rod 24, and then cooperates with the activity roller 32 and the flat pleat roller 33 to flatten the tire airtight layer on the surface of the forming drum 25, avoiding poor effect when it is wrapped around the tire side, and effectively improving the quality of tire wrapping.

[0027] Next, the working principle of the tire side wrapping mechanism for the tire wrapping forming drum will be specifically described.

[0028] As Figures 1-4 shown, when using this device, the user first winds a layer of tire airtight layer on the surface of the forming drum 25, and then installs the positioning wire ring assembly on both side surfaces of the tire airtight layer. By setting the drive motor 21 to cooperate with the first connecting rod 22, it drives the forming drum 25 to rotate through the compression rod 24, and then cooperates with the activity roller 32 and the flat pleat roller 33 to flatten the tire airtight layer on the surface of the forming drum 25, avoiding poor effect when it is wrapped around the tire side, and effectively improving the quality of tire wrapping. By setting the cylinder 28 to cooperate with the telescopic rod 29, the right sliding frame 13 slides leftward on the slide rail base 11 to approach the left sliding frame 12, and the expansion airbag 23 enters into the opening of the tire airtight layer, and then gas is conveyed into it to make it expand, and the tire airtight layer is wrapped around the surface of the positioning wire ring assembly. This device can quickly wrap the tire side, effectively improving the working efficiency.

[0029] The above has generally described the present utility model in detail, but on the basis of the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, the modifications or improvements made without departing from the spirit of the present utility model are all within the protection scope of the present utility model.

Claims

1. A tire sidewall turn-up mechanism for a tire turn-up drum, comprising a tire sidewall turn-up machine (1), characterized in that: The bottom of the tire sidewall turn-up machine (1) is movably connected to a slide rail base (11), a left slide frame (12) is movably mounted on the left side of the slide rail base (11), and a right slide frame (13) is movably mounted on the right side of the slide rail base (11); A forming drum turn-up mechanism (2) is provided on one side of the left sliding frame (12), and a flat pleating mechanism (3) is fixedly installed on the top of the middle end of the slide rail base (11); The forming drum turn-up mechanism (2) comprises a transmission motor (21), the transmission motor (21) is fixedly mounted on one side of the left sliding frame (12), the output end of the transmission motor (21) is fixedly connected to a first connecting rod (22), an expansion airbag (23) is fixedly mounted on the surface of the first connecting rod (22), the output end of the first connecting rod (22) is fixedly connected to a compression rod (24), and a forming drum (25) is fixedly mounted on the surface of the compression rod (24).

2. A sidewall turn-up mechanism for a tire turn-up drum according to claim 1, characterized in that: The first connecting rod (22) is arranged on the other side of the left sliding frame (12); a tire airtight layer is sleeved on the surface of the building drum (25); and positioning wire ring assemblies are fixedly mounted on both sides of the surface of the tire airtight layer.

3. The sidewall turn-up mechanism for a tire turn-up drum according to claim 1, characterized in that: A second connecting rod (26) is fixedly connected to the surface of the right sliding frame (13), and a receiving groove (27) is provided inside the second connecting rod (26), and the receiving groove (27) is adapted to fit the compression rod (24).

4. The sidewall turn-up mechanism for a tire turn-up drum according to claim 3, characterized in that: An expansion airbag (23) is also fixedly mounted on the surface of the second connecting rod (26), and air holes are provided on the surface of the expansion airbag (23).

5. The sidewall turn-up mechanism for a tire turn-up drum according to claim 1, characterized in that: A cylinder (28) is fixedly mounted on the bottom of the left sliding frame (12), a telescopic rod (29) is fixedly connected to the output end of the cylinder (28), and the other end of the telescopic rod (29) is connected to the bottom surface of the right sliding frame (13).

6. The sidewall turn-up mechanism for a tire turn-up drum according to claim 1, characterized in that: The flat pleat mechanism (3) comprises a support frame (31), and the support frame (31) is welded to the top of the middle end of the slide rail base (11).

7. The sidewall turn-up mechanism for a tire turn-up drum according to claim 6, characterized in that: A movable roller (32) is movably mounted on the top of the support frame (31), and the surface of the movable roller (32) is covered with a flat pleat roller (33).

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