Key points of material selection and craftsmanship for the rolling ball cover of the lottery machine: the core protection of transparency, strength, and credibility

In the lottery machine, the rolling ball cover is far more than a simple transparent cover. It serves as a crucial window for "seeing is believing" throughout the entire lottery process, and it is also the first physical line of defense to ensure the fairness, transparency, and non-controversy of the lottery results. Its core mission lies in providing an absolutely clear observation view, withstanding high-intensity mechanical impacts (especially collisions from the rapidly rotating rolling balls), and possessing long-lasting and stable physical properties. When the number of balls contained within the ball cover reaches or exceeds 800, the choice of material becomes paramount in determining the reliability and credibility of the equipment. Currently, imported high-transparency acrylic (PMMA) and high-strength tempered glass are two preferred solutions recognized in the industry. The core of their craftsmanship lies in one-time molding to ensure integrity and strength.

Option 1: Imported high-transparency acrylic (PMMA) ball cover - lightweight, impact-resistant, economical, and practical

Using high-quality imported acrylic sheets, the ball cover shell is molded in one step through precision hot bending or vacuum forming, creating a complete structure. This is currently the mainstream choice for small and medium-sized lottery machines (especially when the number of balls is relatively small), with significant advantages:

Excellent optical performance and light transmittance: The top-grade imported acrylic boasts a light transmittance of over 92%, comparable to glass. When light passes through, it experiences minimal refraction and almost no distortion, ensuring that viewers can observe the stirring state and final result of the ball clearly and without distortion from any angle. This lays the foundation for credibility.

Excellent impact resistance: Acrylic's impact resistance is 5-10 times stronger than ordinary glass! This means that under repeated impact from high-speed rolling balls (especially metal or hard balls), it is less likely to break or crack, greatly enhancing the safety of equipment operation and effectively preventing lottery interruptions or safety hazards caused by accidental breakage.

Lightweight advantage: Acrylic has a density that is only about half that of glass. This significantly reduces the overall weight of the rolling ball cover, lowers the load on the overall structure of the lottery machine (especially the rotating drive mechanism), and makes the equipment operate more smoothly, consume less energy, and be easier to install and maintain.

Extremely strong processing plasticity: Through precision molds and thermoforming processes (hot bending, vacuum forming), a transparent cover with complex structure, smooth curvature, and precise dimensions can be molded in one go, achieving a seamless overall appearance and good sealing. The surface is easy to polish to a mirror-like effect, providing a strong visual transparency.

Economical efficiency and applicability: In scenarios where the number of balls is moderate (usually less than 800 balls) and the impact strength requirements are not extremely stringent, the imported acrylic solution achieves a good balance between performance, cost, and processing efficiency.

Of course, although its surface hardness (Mohs hardness of about 3-4) is much higher than that of ordinary plastic, it is still inferior to glass. Long-term use requires attention to prevent strong scratches from sharp hard objects (such as keys, tools). Long-term exposure to strong ultraviolet light may also lead to slight yellowing (high-quality imported materials can effectively delay this).

Option 2: High-strength tempered glass ball cover - rigid, wear-resistant, and capable of bearing a huge load

When the number of balls in the lottery machine reaches a large scale of 800 or more, high-strength tempered glass is almost the only choice. It is also hot-bent and formed (hot-bent tempering) through a dedicated mold to create an integrated ball cover:

Top-level surface hardness and wear resistance: The tempered glass surface boasts a Mohs hardness of up to 6-7, significantly higher than that of acrylic, indicating its exceptional scratch resistance. Even with frequent and prolonged cleaning and wiping, the surface remains as bright as new, with minimal fine scratches that affect observation, which is crucial for large-scale, high-frequency use of lottery machines.

Extremely high load-bearing capacity and rigidity: Glass material itself possesses extremely high rigidity and compressive strength. After undergoing physical or chemical tempering treatment, its overall strength (especially its bending strength and impact resistance) is more than 3-5 times that of ordinary glass. It can easily withstand the huge kinetic energy and mutual collision pressure generated by 800 or even more spheres during high-speed agitation, ensuring that the cover remains undeformed and unbroken under heavy loads, with unparalleled stability.

Excellent thermal stability and weather resistance: Tempered glass can withstand higher temperature changes and harsher environments (such as strong light and large temperature differences), and is almost free from yellowing, aging, or deformation. Its physicochemical properties are extremely stable, and its service life is extremely long.

An irreplaceable symbol of quality and credibility: Glass material naturally conveys a sense of weightiness, solidity, and immutability. In lottery scenarios involving a large number of balls and significant interest distribution, this physical sense of "unbreakable" is itself a silent commitment to fairness and justice, greatly enhancing the trust of participants.

Safety shattering characteristics: Even in the unlikely event of extreme breakage (such as being hit by violent external forces), tempered glass will shatter into small, blunt-angled particles, greatly reducing the risk of personal injury.

Its limitations lie in its relatively heavy weight (requiring a stronger support structure), as well as the complexity of the hot-bending tempering process, high mold costs, and a relatively long production cycle. For covers with particularly complex shapes or oversized dimensions, the process difficulty and cost will increase significantly.

Conclusion: Magnitude determines choice, transparency witnesses fairness

The core of selecting a rolling ball cover for a lottery machine lies in the requirements for ball capacity and reliability:

For applications requiring a large number of balls (such as 800 or more), extreme wear resistance, superb rigidity, long lifespan, and the highest level of credibility, a high-strength tempered glass hot-bending cover is an inevitable choice. It defends the "rigidity" of the program with physical "rigidity".

Are you looking for a balance between an appropriate number of balls, high light transmittance, strong impact resistance, lightweight, and cost-effectiveness? An imported high-transmittance acrylic one-piece cover is a durable and reliable solution. Its "toughness" ensures smooth and safe processes.

We are fully aware that every lottery draw is about trust and expectation. Therefore, no matter which solution you need, we adhere to using top-quality imported raw materials and implementing a precise one-shot molding process to ensure that every rolling ball cover achieves the highest transparency, the strongest protection, and the longest service life, making the lottery process clear and visible, and the fair result rock-solid. 800 balls? We dare to use glass! Welcome to inquire for customized transparent solutions that best suit your needs!