Polyurethane tire centrifugal trolley circulation line

Abstract

The utility model discloses a polyurethane tire centrifugal trolley circulation line which comprises a closed guide rail, a plurality of centrifugal trolleys installed on the guide rail and a driving mechanism capable of driving the centrifugal trolleys to move along the guide rail, and rotating pieces and centrifugal drivers capable of driving the rotating pieces to rotate are arranged on the centrifugal trolleys. And a tire mold is arranged on the rotating piece. By the adoption of the arrangement, the number of the centrifugal trolleys in the whole production line is not limited by the working radius of the polyurethane foaming filling machine any more, a user can increase the number of the centrifugal trolleys in the whole production line according to the actual situation, and the production efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane tire production technology, and in particular to a polyurethane tire centrifugal trolley circulation line. Background Technology

[0002] Polyurethane tires are wheels made of foamed plastic through injection molding. They are characterized by dimensional stability, low shrinkage, stable chemical composition, corrosion resistance, aging resistance, and good wear resistance. Due to the presence of internal air bubbles, foamed wheels made of foamed plastic are lightweight, material-saving, and can absorb impact loads. Therefore, foamed wheels have a wide range of applications, especially in various transportation equipment fields where they have unique application value.

[0003] Polyurethane foam injection machine is a special equipment for polyurethane injection and foaming. It is often used in the production of foaming wheels. Generally, polyether polyol and polyisocyanate are used as the two components A and B as raw materials. After precise proportioning and high-speed stirring, the two components A and B are respectively delivered to the stirring head. After high-speed and strong stirring, the liquid is evenly injected into the mold on the centrifuge. Then the mold is centrifuged and rotated to make the desired product.

[0004] Traditional polyurethane foam injection machines use a boom to transport the liquid material to a centrifuge, requiring operators to shuttle back and forth between the two sides for injection production. Due to the limited radius of the boom, only about 20 centrifuges can be installed, resulting in a small number of molds produced and low daily output. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a polyurethane tire centrifugal trolley circulation line, in which the number of tire molds is not limited by the working area of ​​the polyurethane foaming injection machine.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0007] A polyurethane tire centrifugal trolley circulation line includes a closed guide rail, a plurality of centrifugal trolleys mounted on the guide rail, and a drive mechanism capable of driving the centrifugal trolleys to move along the guide rail. Each centrifugal trolley is provided with a rotating component and a centrifugal drive capable of driving the rotating component to rotate. A tire mold is provided on the rotating component.

[0008] In a preferred embodiment of this utility model, the guide rail is elongated oval, the drive mechanism includes a first sprocket, a second sprocket, a main chain connecting the first sprocket and the second sprocket, and a circulating motor capable of driving the first sprocket and the second sprocket to rotate, the centrifugal trolley includes a frame and a plurality of wheel assemblies disposed at the bottom of the frame, and a movable connection structure connecting the centrifugal trolley and the chain is provided.

[0009] In a preferred embodiment of this utility model, a first fixed seat and a second fixed seat that are spaced apart from each other are fixed on one side of the frame. The movable connection structure includes a first connecting member hinged to the first fixed seat, a rotating arm hinged to the second fixed seat, and a second connecting member hinged to the rotating arm. The first connecting member and the second connecting member are respectively connected to a link of the main chain.

[0010] In a preferred embodiment of the present invention, the frame includes a base frame, the first fixing seat and the second fixing seat are both fixed on the same side of the base frame, and all wheel assemblies are mounted on the lower surface of the base frame.

[0011] In a preferred embodiment of this utility model, the wheel assembly is a swivel wheel assembly.

[0012] In a preferred embodiment of this utility model, a platform is fixed on the frame, a bearing seat is fixed on the platform, a rotating shaft inserted into the bearing seat is fixed on the rotating component, a bearing is fitted between the bearing seat and the rotating shaft, and the centrifugal drive includes a motor mounted on the platform, the output shaft of the motor is connected to the rotating shaft.

[0013] The beneficial effects of this utility model are: by adopting this setting, the number of centrifugal carts and tire molds in the entire production line is no longer limited by the working radius of the polyurethane foam injection machine. Users can increase the number of centrifugal carts and tire molds in the entire production line according to the actual situation, which is conducive to improving production efficiency. Attached Figure Description

[0014] Figure 1 This is a top view of the present invention;

[0015] Figure 2 yes Figure 1 Enlarged view of section B;

[0016] Figure 3 This is a schematic diagram of the connection structure between the centrifuge cart and the main chain;

[0017] Figure 4 yes Figure 1 Cross-sectional view at line AA;

[0018] Figure 5 This is a schematic diagram showing the positional relationship between a centrifugal trolley and a guide rail.

[0019] Figure 6 It is a 3D diagram of a centrifugal cart. Detailed Implementation

[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly. Furthermore, descriptions involving "preferred," "second-preferred," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "preferred" or "second-preferred" may explicitly or implicitly include at least one of those features.

[0022] Reference Figures 1 to 6 This utility model proposes a polyurethane tire centrifugal trolley circulation line, including a closed guide rail 1, multiple centrifugal trolleys 800 mounted on the guide rail 1, a drive mechanism capable of driving the centrifugal trolleys 800 to move along the guide rail 1, and an oven 2. The oven 2 includes a box body 21 fixed relative to the guide rail 1 and a heating device disposed in the box body 21. The centrifugal trolley 800 includes a centrifugal trolley 800, a rotating component 31 rotatably mounted on the centrifugal trolley 800, a tire mold 4 mounted on the rotating component 31, and a centrifugal drive 32 capable of driving the rotating component 31 and the tire mold 4 to rotate together. The box body 21 has a baking cavity 210, a baking inlet and a baking outlet communicating with the baking cavity 210. When the centrifugal trolley 800 moves along the guide rail 1, the tire mold 4 on the centrifugal trolley 800 can pass through the baking inlet, the baking cavity 210 and the baking outlet in sequence.

[0023] Preferably, the guide rail 1 is elongated oval, and the drive mechanism includes a first sprocket 71, a second sprocket 72, a main chain 73 connecting the first sprocket 71 and the second sprocket 72, and a circulating motor capable of driving the first sprocket 71 and the second sprocket 72 to rotate. The centrifugal trolley 800 includes a frame 801 and a plurality of wheel assemblies 802 disposed at the bottom of the frame 801. A movable connection structure is provided between the centrifugal trolley 800 and the chain to connect the two.

[0024] The centrifugal trolley 800 circulating production system adopts a structure that allows the centrifugal trolley 800 to be easily pulled by the main chain 73 along the elongated oval guide track 1. An oven 2 is located on the left side of this guide track 1, and a polyurethane foam injection machine can be located on the right side. When the centrifugal trolley 800 moves to the working area of ​​the polyurethane foam injection machine, foaming material can be injected into the tire mold 4 of the centrifugal trolley 800. After injection, the tire mold 4 is closed, and then the centrifugal drive 32 drives the tire mold 4 to rotate, forming a polyurethane tire blank within the tire mold 4. As the rotating tire mold 4 moves with the centrifugal trolley 800 into the baking cavity 210 of the oven 2, the foaming material inside is slowly solidified. After the centrifugal trolley 800 leaves the working area of ​​the oven 2, the operator can open the tire mold 4 and remove the polyurethane tire blank. Then, when the centrifugal trolley 800 moves back to the working area of ​​the polyurethane foam injection machine, the next round of operation begins. Compared with existing technologies, this setup eliminates the limitation of the number of centrifugal trolleys 800 in the entire production line by the working radius of the polyurethane foam injection machine. Users can increase the number of centrifugal trolleys 800 in the entire production line according to actual conditions, which helps to improve production efficiency.

[0025] Preferably, the heating device includes a plurality of heating tubes 60 fixed on the inner surface of the top of the housing 21.

[0026] Furthermore, the heating element is positioned above the tire mold 4, and a fan capable of generating airflow within the baking cavity 210 is installed on the housing 21. The fan includes a main shaft 51 rotatably mounted on the top wall of the housing 21, an impeller 52 mounted on the main shaft 51 and capable of blowing air downwards, and a blower motor 53 mounted on the housing 21 and capable of driving the main shaft 51 and impeller 52 to rotate together. The impeller 52 is located inside the baking cavity 210 and above the tire mold 4 on the centrifugal trolley 800. This design allows the hot air within the baking cavity 210 to flow downwards and heat the tire mold 4, improving heating efficiency. The presence of the fan also ensures thorough mixing of hot and cold air within the baking cavity 210, further enhancing temperature uniformity within the baking cavity 210.

[0027] Reference Figure 4 A fixed bracket 61 is provided on one side of the guide rail 1. A crossbar 62 is provided on the top of the fixed bracket 61. A hanging rod 63 is provided on the crossbar 62. The lower end of the hanging rod 63 is connected to the box 21 so that the box 21 is hoisted on the crossbar 62, thereby making the box 21 located above the guide rail 1.

[0028] In a preferred embodiment of this utility model, a first fixed seat 81 and a second fixed seat 82, which are spaced apart from each other, are fixed on one side of the frame 801. The movable connection structure includes a first connecting member 83 hinged to the first fixed seat 81, a rotating arm 84 hinged to the second fixed seat 82, and a second connecting member 85 hinged to the rotating arm 84. The first connecting member 83 and the second connecting member 85 are respectively connected to a link of the main chain 73.

[0029] The frame 801 includes a base frame 86, with a first fixing seat 81 and a second fixing seat 82 both fixed to the same side of the base frame 86. All wheel assemblies 802 are mounted on the lower surface of the base frame 86. Wheel assemblies 802 and 8022 are also swivel wheel assemblies. The structures of the aforementioned swivel wheel assemblies, impeller 52, blower motor 53, and heating element 60 are existing mature technologies and are commercially available.

[0030] Reference Figure 4 A platform 87 is fixed on the frame 801, a bearing seat is fixed on the platform 87, a rotating shaft inserted into the bearing seat is fixed on the rotating component 31, a bearing is fitted between the bearing seat and the rotating shaft, and the centrifugal drive 32 includes a motor mounted on the platform 87, and the output shaft of the motor is connected to the rotating shaft.

[0031] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A polyurethane tire centrifugal trolley circulation line, characterized in that, The system includes a closed guide rail (1), multiple centrifugal trolleys (800) mounted on the guide rail (1), and a drive mechanism that can drive the centrifugal trolleys (800) to move along the guide rail (1). Each centrifugal trolley (800) is provided with a rotating component (31) and a centrifugal drive unit (32) that can drive the rotating component (31) to rotate. The rotating component (31) is provided with a tire mold (4). The guide rail (1) is oblong. The drive mechanism includes a first sprocket (71), a second sprocket (72), a main chain (73) connecting the first sprocket (71) and the second sprocket (72), and a circulating motor that can drive the first sprocket (71) and the second sprocket (72) to rotate. Each centrifugal trolley (800) includes a frame (801) and a number of wheel assemblies (802) provided at the bottom of the frame (801). A movable connection structure is provided between the centrifugal trolley (800) and the chain to connect the two.

2. The polyurethane tire centrifugal trolley circulation line according to claim 1, characterized in that, The frame (801) has a first fixed seat (81) and a second fixed seat (82) fixed on one side, which are spaced apart from each other. The movable connection structure includes a first connector (83) hinged to the first fixed seat (81), a rotating arm (84) hinged to the second fixed seat (82), and a second connector (85) hinged to the rotating arm (84). The first connector (83) and the second connector (85) are respectively connected to a link of the main chain (73).

3. A polyurethane tire centrifugal trolley circulation line according to claim 2, characterized in that, The frame (801) includes a base frame (86), the first fixing seat (81) and the second fixing seat (82) are both fixed on the same side of the base frame (86), and all wheel assemblies (802) are mounted on the lower surface of the base frame (86).

4. The polyurethane tire centrifugal trolley circulation line according to claim 1, characterized in that, The wheel assembly (802) is a swivel wheel assembly.

5. A polyurethane tire centrifugal trolley circulation line according to claim 1, characterized in that, A platform (87) is fixed on the frame (801), a bearing seat is fixed on the platform (87), a rotating shaft inserted into the bearing seat is fixed on the rotating component (31), a bearing is fitted between the bearing seat and the rotating shaft, and the centrifugal drive (32) includes a motor mounted on the platform (87), and the output shaft of the motor is connected to the rotating shaft.

Images