Tire mold variable width type three-dimensional steel sheet

Abstract

The utility model discloses a tire mould variable width type three -dimensional steel sheet, the steel sheet width of close tire tread place is less than the steel sheet width of far away tire tread place, and the transition part of width change uses oblique line and circular arc smooth transition. Variable width type three -dimensional steel sheet forms three -dimensional steel sheet groove on the tire, reduces tire pattern friction, increases the heat dissipation capacity, especially guarantees the drainage and heat dissipation performance of later period, and the transition part of variable width type three -dimensional steel sheet at width change uses oblique line and circular arc smooth transition and can prevent damaging tire when demoulding.

Description

Technical Field

[0001] This utility model belongs to the field of tire production molds and three-dimensional steel sheets, specifically relating to a tire mold with a variable width three-dimensional steel sheet. Background Technology

[0002] Tire treads have numerous grooves of varying widths, which significantly impact tire performance, particularly braking and grip on wet surfaces. To ensure proper drainage and heat dissipation in the long run, tires maintain a certain groove width over time. Narrower grooves are typically created by embedding steel sheets into the tread blocks of a tire mold. These steel sheets are formed through stamping or 3D printing. As tire tread designs become increasingly complex, three-dimensional steel sheets are being used more frequently in tire molds. However, due to improper structure, poor demolding of these three-dimensional steel sheets can easily lead to tire damage. Summary of the Invention

[0003] To address the problem of tire damage caused by poor demolding of three-dimensional steel sheets, this invention provides a widened three-dimensional steel sheet that enhances demolding ability and prevents tire damage.

[0004] The objective of this utility model is achieved in the following manner: A tire mold with a variable-width three-dimensional steel sheet, wherein the width of the steel sheet near the tire tread is smaller than the width of the steel sheet away from the tire tread, and the transition part at the width change is smoothly transitioned by diagonal lines and arcs.

[0005] The variable-width three-dimensional steel sheet can be T-shaped, L-shaped, teardrop-shaped, water bottle-shaped, or baseball bat-shaped.

[0006] The variable-width three-dimensional steel sheets are arranged circumferentially along the tire tread or transversely along the tire tread, connecting the two ribs.

[0007] Compared to existing technologies, the variable-width three-dimensional steel sheet disclosed in this utility model forms a three-dimensional steel sheet groove on the tire, which ensures the drainage and heat dissipation performance in the later stage. The transition part of the variable-width three-dimensional steel sheet at the width change adopts a smooth transition with oblique lines and arcs to prevent damage to the tire during demolding. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of an L-shaped variable-width steel sheet.

[0009] Figure 2 This is a schematic diagram of the structure of a T-shaped variable-width steel sheet.

[0010] Figure 3 This is a schematic diagram of the structure of a teardrop-shaped, variable-width steel sheet.

[0011] Figure 4 This is a structural diagram of a water bottle-shaped, widened steel sheet.

[0012] Figure 5 This is a schematic diagram of a baseball bat-shaped, widened steel sheet.

[0013] In the diagram: 1-motor mold pattern block, 2-protrusion, 7-slanted line, 8-arc, 10-variable width three-dimensional steel sheet. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the contents of the present invention, those skilled in the art can make various modifications or alterations to the present invention, and these equivalent forms also fall within the scope defined by the present invention.

[0015] A tire mold with a variable width three-dimensional steel sheet 10, wherein the width of the steel sheet near the tire tread (i.e. near the movable mold pattern block 1 in the figure) is smaller than the width of the steel sheet away from the tire tread, and the transition part at the width change is smoothly transitioned by a diagonal line 7 and an arc 8.

[0016] The transition sections of the variable-width three-dimensional steel sheet, marked by oblique lines and rounded arcs, smoothly transition at width changes to prevent tire damage during demolding. The variable-width three-dimensional steel sheet forms three-dimensional grooves on the tire, reducing tread friction and increasing heat dissipation, particularly ensuring good drainage and heat dissipation performance later on. The variable-width three-dimensional steel sheet has a simple structure and is easy to process.

[0017] like Figure 1-5 As shown, the cross-sectional shapes of the variable-width three-dimensional steel sheet include L-shaped (see...). Figure 1 ), T-type (see) Figure 2 ), teardrop shape (see) Figure 3 ), water bottle type (see) Figure 4 ) or bat type (see Figure 5 ).

[0018] In the context of variable-width three-dimensional steel sheets, "variable width" refers to the thickness t of the steel sheet increasing and widening.

[0019] L-shaped, T-shaped, and teardrop-shaped steel sheets have a sudden increase in width at the end furthest from the tire tread, while the width remains uniform at other locations. The width of the ball-and-stick shaped steel sheet increases uniformly from the end closest to the tire tread to the other end, with the largest dimension at the end furthest from the tire tread. The width of the bottle-shaped steel sheet first increases and then decreases from the end closest to the tire tread to the other end. The thickness t of the variable-width three-dimensional steel sheet is defined as the thickness of the steel sheet closest to the tire tread.

[0020] A protrusion 2 is added to the contact area between the movable mold tread block 1 and the widened three-dimensional steel sheet 10. That is, the movable mold tread block 1 extends into the depth direction of the widened three-dimensional steel sheet 10, making the grooves formed on the tire tread deeper. The steel sheet grooves formed by the steel sheet do not directly contact the ground. The protrusion 2 is trapezoidal in shape (see...). Figure 3 , Figure 4 (Left), square (see Figure 4, Right) Figure 5 It can be either a semi-circle or a rounded corner, with rounded transitions added to the edges.

[0021] The variable-width three-dimensional steel sheets are arranged circumferentially along the tire tread or transversely along the tire tread, connecting the two ribs.

[0022] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A three-dimensional steel sheet with variable width for tire molds, characterized in that: The width of the steel sheet near the tire tread is smaller than that of the steel sheet far from the tire tread. The transition part where the width changes is smoothly transitioned by diagonal lines (7) and arcs (8). The widened three-dimensional steel sheets are arranged circumferentially along the tire tread or transversely along the tire tread, connecting the two ribs.

2. The tire mold variable-width three-dimensional steel sheet according to claim 1, characterized in that: The cross-sectional shape of the variable-width three-dimensional steel sheet is L-shaped, T-shaped, teardrop-shaped, bottle-shaped, or baseball-shaped.

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