Dining Plastic Backrest Stool Mould

We are a mold manufacturer of over 24 years and always offering reliable products and good service.
If you are in large need plastic products, or you are planning to develop new products for marketing, we will be your ideal partner of mold tooling.

Green Vitality Industry Co., Ltd was established in 1993, registered in Hong Kong as a injection mold maker.

We have been delicated to the mold making industry for more than 20 years. With constant growing and development, we expanded and founded factory in nearby city in Dongguan. 

Now Green Vitality has accumulated rich experience and build up a strong steady engineering and manufacturing team.

Green Vitality occupies over 8,000 square meters. We have over 100 employees including more than 30 designers, engineers, business managers and customer support staff members. We produce and deliver nearly 600 set molds throughout the world per year.

Some New Injection Molds & Structure in Our Workshop:

Contat and Cooperation:

If you have a project you would like us to evaluate, please send the technical drawings and specifications, we'd be happy to assist you.

We believe our parts make your parts better!


 

Plate Rolling

A plate rolling machine is a machine that will roll different kinds of metal sheet into a round or conical shape. It can be also called a [roll bending machine", [plate bending machine" or [rolling machine".
There are different kinds of technology to roll the metal plate:
Four-roller machines have a top roll, the pinching roll, and two side rolls.
The flat metal plate is placed in the machine on either side and "pre-bent" on the same side. The side rolls do the work of bending. The pinching roll holds the plate.
Three-roller machines (variable pitch aka variable geometry) have one pressing top roll and two pressing side rolls.
The three-roll variable pitch works by having all three rolls able to move and tilt. The top roll moves in the vertical plane and the side rolls move on the horizontal plane. When rolling, the top roll presses the metal plate between the two side rolls. The advantage of having the variable three roll is the ability to roll many thicknesses and diameters of cylinders.
For example; The side-rolls are what produce the mechanical advantage. With the side rolls all the way open, one has the maximum mechanical advantage. With the side rolls all the way in, you have the least mechanical advantage. So, a machine has the capability of rolling 2-inch-thick material with the maximum mechanical advantage, but a job is only 1/2 inch thick. Reduce the mechanical advantage and one has a machine that can roll from 1/2 to 2 inches thick.A plate rolling machine is a machine that will roll different kinds of metal sheet into a round or conical shape. It can be also called a [roll bending machine", [plate bending machine" or [rolling machine".
There are different kinds of technology to roll the metal plate:
.Four-roller machines have a top roll, the pinching roll, and two side rolls.
The flat metal plate is placed in the machine on either side and "pre-bent" on the same side. The side rolls do the work of bending. The pinching roll holds the plate.
.Three-roller machines (variable pitch aka variable geometry) have one pressing top roll and two pressing side rolls.
The three-roll variable pitch works by having all three rolls able to move and tilt. The top roll moves in the vertical plane and the side rolls move on the horizontal plane. When rolling, the top roll presses the metal plate between the two side rolls. The advantage of having the variable three roll is the ability to roll many thicknesses and diameters of cylinders.
For example; The side-rolls are what produce the mechanical advantage. With the side rolls all the way open, one has the maximum mechanical advantage. With the side rolls all the way in, you have the least mechanical advantage. So, a machine has the capability of rolling 2-inch-thick material with the maximum mechanical advantage, but a job is only 1/2 inch thick. Reduce the mechanical advantage and one has a machine that can roll from 1/2 to 2 inches thick.

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Jiangsu Hoston Machine Tools Co., Ltd. , https://www.hosdunmachinetools.com