A mold and a tire

Abstract

The application relates to the technical field of molds, and provides a mold, which comprises multiple groups of flow channel groups in communication with each other, each group of the flow channel groups has flow channels extending to the middle along multiple directions and is in communication with each other to form communication ports, adjacent communication ports are communicated through the same flow channel; the inner bottom surface width of the flow channel is 0.01 mm-0.05 mm, the depth of the flow channel is 0.1 mm-0.5 mm, the distance between diagonal lines of the communication ports is less than 0.475 mm, and the draft angle is 1 DEG -15 DEG. Based on the mold, when a rubber product with fluff texture is manufactured, the adverse effects of residual air in a cavity can be reduced, the residual air can be utilized, and the processing cost of the fluff texture can be reduced. In addition, a tire is also provided.

Description

Technical Field

[0001] This invention relates to the field of mold technology, specifically to a mold and a tire. Background Technology

[0002] As market demands for the appearance and functionality of rubber products continue to rise, surface texture design has become a crucial factor in enhancing product competitiveness. Among these, velvety textures have garnered widespread attention due to their unique soft touch and aesthetically pleasing appearance.

[0003] However, in some applications, creating a velvety texture requires complex engraving techniques and high processing precision, which significantly increases the cost of mold manufacturing. Furthermore, during the rubber molding process, air can easily remain in the texture recesses on the mold surface. This air cannot be properly expelled during molding, which can easily lead to poor molding problems such as missing texture features and uneven surfaces on the rubber product, seriously affecting product quality.

[0004] Therefore, this application studies a mold that can reduce the adverse effects of residual air in the mold cavity when manufacturing rubber products with a velvety texture, and utilizes it to reduce the processing cost of the velvety texture. Utility Model Content

[0005] In order to reduce the adverse effects of residual air in the mold cavity when manufacturing rubber products with a velvety texture, and to make use of it, the processing cost of the velvety texture can be reduced.

[0006] On the one hand, the mold provided in this application adopts the following technical solution: A mold includes multiple interconnected runner groups, each runner group having runners extending towards the center in multiple directions and interconnected to form a connecting port, with adjacent connecting ports connected through the same runner; the width of the inner bottom surface of the runner is 0.01mm-0.05mm, the runner depth is 0.1mm-0.5mm, the distance between the diagonals of the connecting ports is less than 0.475mm, and the draft angle is 1°-15°.

[0007] By adopting the above technical solution, due to the extremely small width of the bottom surface of the flow channel, it is very difficult for fluid to enter the bottom of the flow channel, while air can easily enter. The rubber filling is shallow, forming the troughs of the rubber product. Because the distance between the diagonals of the connecting opening is larger than the width of the bottom surface of the flow channel, the rubber filling at the connecting opening is deeper, forming the peaks of the rubber product. The resulting rubber product has a peak-and-trough shape. The dense peaks give the product a velvety texture effect. The draft angle is conducive to the demolding of the product, avoiding defects generated during the demolding process. Therefore, by utilizing the air formed at the bottom of the flow channel, the adverse effects of residual air in the cavity can be reduced, and the processing cost of the velvety texture can be reduced.

[0008] Optionally, the flow channel extends along a curve or a straight line.

[0009] Optionally, the flow channel is set as a straight line near both ends of the connecting port, and is set as a curve in the middle section of the flow channel.

[0010] By adopting the above technical solutions, it is helpful to reduce the resistance of fluid flow while maintaining the strength and stability of the flow channel.

[0011] Optionally, each group of the flow channels has four flow channels, which are arranged perpendicularly to each other near the connection port.

[0012] By adopting the above technical solution, the fluid can be evenly distributed, thereby improving molding efficiency and product quality.

[0013] Optionally, the flow channel may not be aligned with its central axis.

[0014] By adopting the above technical solutions, the eddies and turbulence of fluid in the flow channel are reduced, thereby improving the flow efficiency of the fluid.

[0015] Optionally, the width of the inner bottom surface of the flow channel is 0.02 mm, the depth of the flow channel is 0.35 mm, and the distance between the diagonals of the connecting opening is 0.045 mm.

[0016] By adopting the above technical solutions, the stability of the fluid can be further improved, and material waste can be reduced.

[0017] Optionally, the draft angle is 6°.

[0018] By adopting the above technical solutions, product damage during the demolding process can be further reduced, and the product yield can be improved.

[0019] On the other hand, the tire provided in this application adopts the following technical solution: A tire includes a tire body and a texture made by the aforementioned mold, the texture being disposed on the outer surface of the tire body.

[0020] In summary, this application includes the following beneficial technical effects: 1. Due to the extremely narrow width of the bottom surface of the runner, fluid has great difficulty entering the very bottom of the runner, while air can easily enter. The rubber filling is shallow, forming troughs in the rubber product. Because the distance between the diagonals of the connecting openings is larger than the width of the bottom surface of the runner, the rubber filling at the connecting openings is deeper, forming peaks in the rubber product. This results in a rubber product with a peak-and-trough shape. The dense peaks create a velvety texture effect. The draft angle facilitates demolding, avoiding defects generated during demolding. Therefore, utilizing the air formed at the bottom of the runner can reduce the adverse effects of residual air in the cavity and lower the processing cost of the velvety texture. 2. The tire is textured with a mold, giving the tire surface a velvety effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0022] In the diagram: Figure 1 This is a partial structural schematic diagram of the mold according to an embodiment of this application; Figure 2 This is a plan view of the mold according to an embodiment of this application; Figure 3 yes Figure 2 Cross-sectional view at point AA; Figure 4 yes Figure 2 Cross-sectional view at point BB; Figure 5 This is a drawing of a rubber product made using a mold according to an embodiment of this application; Figure 6 yes Figure 5 Cross-sectional view at point CC; Figure 7 yes Figure 5 Cross-sectional view at point DD.

[0023] Attached diagram labels: 1. Flow channel; 2. Connecting port. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0025] This application discloses a mold. (Refer to...) Figures 1-2The mold includes multiple interconnected flow channel groups. Each flow channel group has a flow channel 1 extending towards the center in multiple directions. The flow channel 1 is formed by laser processing and interconnected to form a connecting port 2. Adjacent connecting ports 2 are connected through the same flow channel 1. That is, one of the flow channels 1 of adjacent flow channel groups is a shared flow channel 1. The rubber product formed by injecting fluid through the flow channel 1 and the connecting port 2 has the desired texture.

[0026] Reference Figures 3-7 The width of the inner bottom surface of flow channel 1 is 0.01mm-0.05mm, that is... Figure 3 The distance 'a' in the middle, and the width of the inner bottom surface at this size, make it difficult for fluid to enter, while allowing air to enter very easily. The rubber filling is relatively shallow, resulting in a trough at the end face of the rubber product formed in channel 1. The depth of channel 1 is 0.1mm-0.5mm. Figure 3 The distance of b in the middle can control the height of the texture by controlling the depth of the flow channel 1, and can also control the use of materials, thus saving materials.

[0027] The distance between the diagonals of the connecting port 2 is less than 0.475mm, that is... Figure 4 Due to the larger distance between the bottom surfaces of the connecting port 2 and the center c, the fluid can penetrate to the bottom surface for filling, resulting in deeper rubber filling. This creates wave-like peaks on the rubber product end face formed at the flow channel 1. Consequently, there are peaks and troughs between the end face of the rubber product formed at the flow channel 1 and the flow channel 1. When the peaks are densely packed, they create a prominent velvety effect. The draft angle is 1°-15°, i.e. Figure 3 By setting the draft angle, the rubber product can be easily demolded, avoiding defects in the demolding process and ensuring the fluffy effect and quality of the rubber product.

[0028] Figure 6 In the process of forming a rubber product using a mold, D corresponds to a in the mold, H corresponds to b in the mold, and θ corresponds to d in the mold. Ideally, the position of d is a plane, but in reality, it contains air. Due to the arrangement of the flow channel 1 and the connecting port 2 in this embodiment, air can be used to form... Figure 7 The trough in the middle, formed at point c in the mold. Figure 7 The peak in the wave.

[0029] Therefore, it can utilize air to form troughs, so that the peaks at the connecting port 2 form a fluffy effect, and ensure the quality of the product after demolding, thereby reducing the adverse effects of residual air in the cavity and reducing the processing cost of fluffy texture.

[0030] Refer again Figure 1 and Figure 2In some embodiments, the flow channel 1 extends along a curve or a straight line. In some embodiments, the flow channel 1 is straight at both ends near the connecting port 2, and curved in the middle section. This further distributes the fluid more evenly, thereby forming a more uniform and finer velvety texture on the surface of the rubber product.

[0031] In some embodiments, each flow channel group has four flow channels 1, which are arranged perpendicularly to each other near the connecting port 2. Uniform fluid distribution helps improve molding efficiency and product quality, and also helps to form a uniform velvety texture on the surface of the rubber product.

[0032] In some embodiments, the central axes of the relative flow channels 1 are not on the same straight line. That is, the relative flow channels 1 are parallel to each other near the connection port 2, but are not on the same straight line, which reduces the eddies and turbulence of the fluid in the flow channels 1, improves the flow efficiency of the fluid, and further forms a clearer and more consistent velvety texture effect.

[0033] In some embodiments, the width of the inner bottom surface of the flow channel 1 is 0.02 mm, the depth of the flow channel 1 is 0.35 mm, and the distance between the diagonals of the connecting opening 2 is 0.045 mm. This can further improve the velvety texture effect and reduce material waste.

[0034] In some embodiments, the draft angle is 6°. This further reduces product damage during demolding, thereby improving product yield and quality, while also helping to maintain the integrity of the velvety texture.

[0035] The implementation principle of a mold according to an embodiment of this application is as follows: Due to the extremely small width of the bottom surface of the flow channel 1, it is very difficult for fluid to enter the bottom of the flow channel 1, while air can easily enter, resulting in shallow rubber filling and forming troughs in the rubber product; Since the distance between the diagonals of the connecting port 2 is larger than the width of the bottom surface of the flow channel 1, the rubber filling in the connecting port 2 is deeper, forming peaks in the rubber product, thus creating a shape with peaks and troughs. The dense peaks and troughs give the product a velvety texture effect; The draft angle is beneficial for demolding the product and avoids defects generated during the demolding process; Therefore, by utilizing the air formed at the bottom of the flow channel 1, the adverse effects of residual air in the cavity can be reduced, and the processing cost of the velvety texture can be reduced.

[0036] This application discloses a tire. The tire includes a tire body and a texture made by the aforementioned mold, the texture being disposed on the outer surface of the tire body. The texture on the tire body can be any pattern, such as letters, numbers, etc.

[0037] The above are exemplary embodiments disclosed in this invention. However, it should be noted that various changes and modifications can be made without departing from the scope of the embodiments of this invention as defined by the claims. The functions, steps, and / or actions of the methods according to the disclosed embodiments described herein do not need to be performed in any particular order. Furthermore, although the elements disclosed in the embodiments of this invention may be described or claimed individually, they may be understood as multiple unless explicitly limited to a singular number.

[0038] It should be understood that, as used herein, the singular form "a" is intended to include the plural form as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations of one or more of the associatedly listed items. The embodiment numbers disclosed above are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples. Within the framework of the invention, technical features of the above embodiments or different embodiments can be combined, and many other variations of different aspects of the invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A mold characterized by: It includes multiple interconnected flow channel groups, each of which has flow channels extending towards the center in multiple directions and interconnected to form a connecting port. Adjacent connecting ports are connected through the same flow channel. The bottom width of the flow channel is 0.01mm-0.05mm, the depth of the flow channel is 0.1mm-0.5mm, the distance between the diagonals of the connecting ports is less than 0.475mm, and the draft angle is 1°-15°.

2. The mold according to claim 1, characterized in that: The flow channel extends along a curve or a straight line.

3. The mold according to claim 2, characterized in that: The flow channel is set in a straight line near both ends of the connecting port, and is set in a curve in the middle section of the flow channel.

4. The mold according to claim 1, characterized in that: Each of the flow channel groups has four flow channels, which are arranged perpendicularly to each other near the connection port.

5. A mold according to claim 1 or 4, characterized in that: The central axis of the flow channel is not on the same straight line.

6. A mold according to claim 1, characterized in that: The width of the bottom surface of the flow channel is 0.02 mm, the depth of the flow channel is 0.35 mm, and the distance between the diagonals of the connecting opening is 0.045 mm.

7. A mold according to claim 1 or 6, characterized in that: The draft angle is 6°.

8. A tire, characterized in that: It includes a tire body and a texture made by a mold as described in any one of claims 1-7, the texture being disposed on the outer surface of the tire body.

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