What is the function of garbage nails, which are generally used in that part of the mold

The purpose of the garbage nail is to reduce the thimble.

The contact area between the bottom plate and the lower fixing plate avoids the mold clamping not in place due to garbage and dust falling on the thimble bottom plate and the lower fixing plate. It is generally used on the lower fixing plate of the mold or the bottom plate of the thimble pin.

When arranging the garbage nails, pay attention to the balance, and put more on the bottom of the return pin and thimble to reduce the deformation of the template. At the same time, it is necessary to avoid institutional positions such as KO holes and middle tos.

The location of the garbage nail is determined:

1. A garbage nail must be installed under each return needle (RP), because the return needle may be stressed greatly when the thimble assembly plate is reset.

2. The average spacing of garbage nails is between 120mm-150mm, but it is necessary to avoid interference with other parts.

3. Large molds must add garbage nails in the middle of the thimble group plate to increase the fulcrum and prevent deformation.

Garbage nails, as the name suggests, are used to hold garbage. When the mold is injection molded, it is difficult to ensure that there is no garbage (such as iron filings) falling into it when the thimble plate is ejected, and if there is no garbage nail, the thimble plate is held up by the garbage when it is reset, and it cannot return to the correct position.

The 10cm higher of the positioning ring is that when the mold is loaded into the injection molding machine, the mold is used to find the correct position on the injection molding machine, and the garbage nail is installed on the moving plate, which can reduce the contact area between the top plate and the moving platen.

The role of garbage nails:

1) Adjustable ejector pin height.

2) Prevent dirt from falling into the bottom plate of the thimble and cause the thimble plate to be unable to fully return to its position, which will affect the appearance of the product, and there will be traces at the thimble.

3) Different companies have different ways to use it, and some directly process the steps on the thimble bottom plate.

To prevent the thimble can not be completely returned, affecting the quality of the product, but also may hit the mold, placed between the lower top plate and the fixed platen, some product requirements are not very strict basically do not use.

Thank you for the big brother upstairs, but the younger brother still has something unclear, will the rubber path from the parting surface cause the secondary processing of the product (to the garbage glue level), why the garbage thimble should be 6-12mm lower than the ratio surface? I feel the same way! I hope the master will come out for guidance! View the original post

This is especially useful for transparent material external parts, because there can be no thimble print. It is commonly known as having long ears on the outside and sticking out on the ears. That's it! View the original post

The main difference is: the position of the top of the garbage thimble is not distributed on the product (the product cannot have top marks), usually on the parting surface from the cavity to lead a glue point about 4-6mm long. Plug in the ejector pinhole.

This way the top is also put by these garbage glue products"Pull"Come out. It should be noted that the length of the thimble is generally about 6---12mm lower than that of the separate surface. View the original post

What is a diving thimble again, what is the difference between him and a thimble View the original post

The diving thimble is glued from the thimble, and the latent gate does not flow down the surface of the spout, and the appearance is refreshing View the original post

The special gasket on the plastic mold prevents the mold from touching the ground for a long time and getting wet, and when the ejection force is very small and the finished product is not allowed to leave traces of the thimble, the garbage nail top can also be used. Hope you are satisfied! （*

There is an effect, the effect is to clear the flash.

The floor is fine again. You just drill it the other way around.

Change the board, or re-allocate the car with garbage nails.

Just change it. It's not simple.

Injection molds are generally added with garbage nails, but many small mold rooms do not add them in order to save trouble. The garbage nail is discharged behind the thimble board, and the plastic mold product will generally not have the appearance of post-processing after the molding is good, so the requirements for the thimble are better, if there is no obvious thimble print in contact with the product, so the thimble board must ensure the flatness, and if you don't put the garbage nail, it is possible to run some flash or something of the garbage between the thimble board and the thimble backing plate, resulting in the thimble plate is uneven, so that the thimble can not return to place and the product quality is affected I hope this answer will help you.

Personally, I think it is used to make it easier to adjust and change the mold. You don't have this, it's because the mold is too simple, and there's no need for that.

The function of the garbage nail is to avoid the foreign body entering between the ejector plate and the lower template and cause the thimble to be unable to fall back into place, which is a basic foolproof device; It is best to set up garbage nails in the injection mold to avoid the thimble hitting the mold.

The main function of the mold garbage balance row high nail is to prevent dust and debris from falling into the bottom plate of the thimble when the product is ejected

Easy to adjust the height of the ejector pin.

The thickness of the general garbage nail is an integer 10mm 12mm 15mm, so there is no how to calculate its height.

You can grind the garbage nails accordingly.

I make plastic molds. If you don't understand anything, you can find me.

I have a mold group, you can also add it to see the QQ mold group 6193336

In fact, there are no strict specific requirements, generally 718 is fine, and even some leftovers are fine.