As the vacuum pressure increases, material is drawn into the piston cylinder through small holes on both sides of the hopper, enabling the suction process. Once the hopper is fully filled, the material is compressed, and the ejector mechanism is closed. A small ball at the outlet of the pouring device then opens the discharge port. As the piston rod moves downward, the small holes on either side of the casting device (which serve as the hopper’s discharge ports) become blocked, isolating the piston cylinder from the hopper. At this point, the material can flow out through the periphery of the ball via the lower outlet of the pouring device, completing the controlled extrusion process. When the spring prevents the piston from descending further, the vacuum pump ball blocks the lower outlet of the oscillating device, ensuring smooth material extrusion and serving a one-way sealing function.
The design of the molding structure has transformed the traditional rotary valve switching control into a spring-activated float control system. This not only results in a more compact structure but also reduces the number of moving parts and simplifies the overall transmission system. The principle behind the pouring sandwich spring float forming mechanism was developed to meet the growing demand for innovative food products—particularly those with double stuffing or multiple layers—while also catering to consumer preferences for soft-textured foods. Based on thorough analysis, reference, and adaptation of existing methods, a new design approach for the sandwich casting structure was created. The core idea revolves around the ease of adhesion of soft materials, which must be casted to absorb the parallel output of two cylinders in a twin-screw sandwich extrusion process. In this setup, the outer casing is filled with ingredients to create a sandwich effect. Additionally, when three cylinders are connected in parallel, the system can encase two different internal fillings. The spring-floating ball molding structure is applied here, and the limit switch control principle from circuit systems is introduced to manage the extrusion and material flow. By integrating these three key design concepts, the pouring spring float double sandwich forming mechanism was successfully developed.
Achromat doublet lenses have significantly better optical performance than singlet lenses in visible imaging and laser beam manipulation applications.It consists of a positive low-index Crown Glass lens element cemented to a negative high-index Flint Glass lens element. The elements are chosen so as to cancel chromatic aberration at two well-separated wavelengths, usually in the blue and red region of the spectrum. Focal length is constant at those two wavelengths and focal length shifts are virtually eliminated across the visible wavelengths. One frequent use is to achieve diffraction limited focusing of a laser beam. Negative Achromat is typically used when there is a need to eliminate chromatic aberration. In addition to reducing chromatic aberration at the design wavelengths, spherical aberration and coma are greatly reduced. We always make our achromats as precise specifications and tolerances for uncompromising image quality upon customer's requirement.
Â
           Doublet Achromatic Lens                                  Triplet Achromatic Lens
 Specification of our achromatic lens as follow:
*Material:BK7,ZF2,ZF7(or according to your request)
*Dia.:+0/-0.05
*Center thickness tolerance:+/-0.1
*Surface quality: 60-40 Scrath/Dig
*Surface figure:0.5-0.2
*Centration < 3arc min
*Chamfer:0.1-0.25*45 degrees
*Design wavelength:486.1mm,587.6mm,656.3mm and upon request.
        Â
Achromatic Doublet Lens,Negative Optical Achromats Lens,Optical Achromatic Lens,Big Dimension Achromatic Lens
China Star Optics Technology Co.,Ltd. , https://www.csoptlens.com