Introduction to the structure and performance of the tin box with hinged lid

Do you know what the structure of a hinged tin box is? In fact, an object A is placed on a part C of another object B. The movement of object A is restricted by C, but A can go around C in a plane or space (C is Hemispherical) rotating, objects A and B can form a hinge structure. The hinge is a mechanical device used to connect the box body and the lid and allow rotation between the two. The hinge assembly of the tin box with hinged lid may consist of a movable assembly or a foldable material. Nowadays, hinge lid tin boxes are widely used in packaging and are essential. Do you want to know more about the structure of hinge tin boxes? Below I will introduce the structure, classification, main performance indicators, precautions and identification methods of hinges.

 Hinges can generally be divided into three main structures: hinge head (iron head), body, and base.

1. Body: Mainly related to the size of the cover;

2. Base: The main function is to fix and lock the cover plate on the box body;

3. Iron head: The main function of the iron head is to fix the lid.

 Other parts of the hinge include: connecting piece, shrapnel, U-shaped nail, rivet, spring, adjusting screw, base screw.

1. Spring: is responsible for the tensile strength when the tin box is opened and closed.

2. Adjusting screw: as a function of adjusting the cover, combined with the hinge and base for auxiliary use;

3. Base screw: for the combination of hinge and base;

4. Connecting piece: to carry the weight of the cover;

5. Shrapnel: It assists in enhancing the load of the connecting piece and generating a switch when matched with the spring;

6. U-shaped nails and rivets: It is used to combine iron heads, connecting pieces, shrapnel and body.

Classification of tin boxes with hinged lids

1. According to the type of base, it is divided into two types: detachable type and fixed type;

2. According to the type of arm body, it is divided into two types: sliding type and card type;

3. According to the position of the cover, it is divided into full cover (straight bend, straight arm), general cover 18 mm, half cover (middle bend, crank arm) cover 9 mm;

4. According to the style of hinge development stage, it is divided into: one-stage force hinge, two-stage force hinge, hydraulic buffer hinge, touch self-opening hinge, etc.;

5. According to the opening and closing angle of the hinge: generally 95-110 degrees are commonly used, and special ones are 25 degrees, 30 degrees, 45 degrees, 135 degrees, 165 degrees, 180 degrees, etc.;

6. According to the type of hinge, it is divided into: ordinary one-stage and two-stage hinges, short-arm hinges, 26-cup miniature hinges, marble hinges, aluminum frame door hinges, special angle hinges, glass hinges, rebound hinges, American hinges, damping hinges , Thick door hinges, etc.

7. Classified by place of use

1) General hinge material

From the material, it can be divided into: iron, copper, and stainless steel. From the specifications, it can be divided into: 25mm, 30mm, 35mm. 40mm hinges are suitable for large storage tin boxes. The disadvantage of ordinary hinges is that they do not have the function of spring hinges.

2) Spring hinged lid iron box

Mainly used for kitchen storage tin boxes, which generally require the thickness of the tin box to be 0.35-0.45mm. From the material point of view, it can be divided into: tin-plated iron, galvanized iron, and zinc alloy. From the performance point of view, it can be divided into two types: holes are required and holes are not required. No need to punch holes is what we call bridge hinges. Specifications are: small, medium, and large. Need to make holes, which are now commonly used in storage boxes. Its characteristics: the lid must be punched, the style is restricted by the hinge, and the specifications are: &26, &35. There are detachable directional hinges and non-detachable non-directional hinges. For example, the 303 series of Longsheng hinges are detachable directional hinges, and the 204 series are non-detachable spring hinges which can be divided into shapes: full cover, half cover, and inner side.

3)Large tin box with hinged lid

     It is divided into common type and customized type. The common type has been discussed above, but now the focus is on the customized type. Customized type can be divided into copper and stainless steel in terms of material. From the specifications: 10X75 mm, 12.5X75mm 25X90 mm, 350X100mm. The thickness is 2.5mm, 3mm. From the perspective of consumption, there are more tin boxes with copper hinges, because they are beautiful in style, bright, and moderate in price.

4) Special-shaped hinged lid iron box

   The special-shaped hinge lid tin box is also a corner hinge with a large opening angle, which is also widely used in daily use

5) Other hinge tin boxes

    There are countertop hinges, flip door hinges, and glass hinges. Glass hinges are widely used,

The main performance index of the hinged tin box

   The main performance index of the hinged tin box is to protect the contents. The compressive and load-bearing performance index is generally 5Kg as a grade unit. Other performance indicators of the hinge to the tin box include service life, corrosion resistance, etc., according to different standard systems and test methods, there are different indicators. For example, in the European standard, there are requirements for the amount of deformation after the life test; and there are more stringent requirements for resistance to elastic deformation and plastic deformation.

How to distinguish the quality of the hinged lid tin box

1. Material

The first thing to look at is the material of the hinged lid iron box. At present, the commonly used hinge lid iron boxes on the market are mostly made of tin-plated iron and stainless steel. The surface is bright, but it is easy to rust in a humid environment. The stainless steel material has good toughness and resistance. Corrosion is good, and the price is more expensive than cold-rolled steel.

2. Feel

Good quality tin boxes with hinged lids use sufficient materials, heavier weight, and have a smoother surface. On the contrary, hinge lid iron boxes with poor quality are generally lighter due to cost savings and insufficient materials, and workmanship. It is rough and can be recognized by the naked eye.

3. Resilience

The better quality tin box with hinged lid can clearly feel the resilience of the hinge itself when it is closed, and the resilience strength is appropriate, while the rebound strength of the inferior hinge lid tin box should be checked a lot when it is closed. , Or too tight, or too loose, it is easy to cause problems after using for a long time.

4. Color

 Good-quality tin boxes with hinged lids are generally brighter in color and smooth and flat, while inferior tin boxes with hinged lids are mostly found in small family workshops and are not so exquisite in workmanship. Therefore, the color of hinge lid tin boxes is generally dim.

5. Brand

   For customers who don’t know how to make a custom-made hinged lid tin box, when buying a hinge lid tin box, try to choose some well-known brand manufacturers. After all, the quality of the brand manufacturers’ products is still very guaranteed. Even if the product has quality problems in the future, there will be a relatively complete after-sales service system. Small brands do not have this strength.

6. Price

The last thing to pay attention to is the price of the hinged lid tin box. As the saying goes, you get what you pay for. The higher the price, the better the quality of the hinge lid tin box. The cheaper the hinge lid tin box, the quality is definitely difficult to guarantee. , When buying, be sure to ask more about the differences between common products at different prices, so that it is easy to distinguish between good and bad.

The above is the structure, classification, main performance indicators, precautions and identification methods of tin boxes with hinged lids that I have introduced for you. In fact, the requirements for custom-made hinge tin boxes are also different for different use environments. You can choose the right hinge tin box according to your needs. After a period of use, the hinged iron box can be opened and closed more conveniently.