Finger Punching Machine of Timing Belt -- DC200

DC200 Finger Punching Machine

Why should we punching the finger before the belt joint ?

the finger punching machines to cut the fingers are designed to enhance the strength, durability, and operational stability of the splice. Here are the key reasons and advantages:  

1. Increased joint Area for Better Bonding Strength

   - the fingers provide more surface area to joint, forming a mechanical interlock after Joint.  

   - This structure resists peeling and shearing forces better than a straight-cut joint, reducing the risk of splice failure.  

2. Distributes Stress, Reducing Localized Wear

   - The joint is a stress concentration point during operation. A serrated pattern spreads stress across multiple tooth surfaces instead of a single line, extending splice life.  

   - Particularly beneficial for high-tension, high-speed, or frequent start-stop applications.  

3. Improved Flexibility for Belt Bending

   - The teeth allow slight elastic deformation when the belt passes over pulleys or rollers, reducing rigid-edge wear and preventing delamination or cracking.  

4. Prevents Misalignment  

   - The interlocking finger help resist lateral displacement ( from belt tracking issues), maintaining splice alignment.  

5. Compatibility with Special Belt Types  

   - For multi-ply fabric belts or steel cord belts, serrations enable staggered layer bonding, preventing simultaneous ply separation.  

Machine Parameters

One convenient feature of this machine is that we can mark points to punch the finger of the belt. This punching method of this machine is very material-efficient and rarely generates waste.

1st step, you need to punch the first finger as long as you can print out the complete first tooth pattern, that will be fine. Make sure that both sides of the belt and the top remain straight.

2nd step, Make a fixed marking point at a location on a machine that you can easily identify. For example: We usually use the edge of the gear plate as the marking point.

3rd step,The position of the marking point on the corresponding machine is used to mark the first point on the belt as the origin of the length measurement.

After going through the above three steps, we obtained the two most important marking points and the first complete finger.

4th step,Measure the length of the belt you need. Remove the belt and start measuring from the first marking point on the belt as the zero point for the length unit. Measure the size of the endless belt you need. For example, if you need a 1000mm long endless belt, measure 1000mm from the 1st marking point and mark the second point on the position of 1000mm length.

Following this pattern, you can measure the second 1000mm endless belt starting from the 2nd marking point.

then , the 3rd ,4th ,it is same.

5th step,Put the belt back into the machine. This machine has a hollow design in the middle, so you can simply pass the belt through the middle and then use the fixed marking points on the cutting plate to correspond with the marking points on the belt (the 2nd mark point at the first 1000mm position), then punch the belt ,you will get the first 1000mm timing belt you need.

From this, we can proceed to obtain the 2nd,3rd,4th timing belts.

So, do you understand how to use the length counting machine in combination? Yes, it's by using the marking points made by the length counting machine. You don't need to measure manually. The counting machine does it for you. All you need to do is to match these marking points with the fixed marking points on the machine, and you can complete the measurement and finger punching work for hundreds of belts in a short time very easily.