Plastic chair injection molding machine is a common plastic processing equipment, which is widely used to manufacture various plastic products. When using the injection moulding machine, the calculation of the foot bearing is very important, it is related to the stability and safety of the machine. So how to carry out the plastic moulding machine foot-bearing calculation?
Table of Contents
ToggleBasic Information of the Injection Molding Machine
First of all, you need to know the basic information of the injection moulding machine, including the model, size and weight of the machine. This information can be obtained from the instruction manual of the plastic injection moulding machine or relevant information.
Ground Considerations
Next, you need to consider the ground on which the injection plastic molding machine is placed, and the load-bearing capacity of the ground is the key to carry out the calculation of the weight bearing of the foot. Generally, the plastic chair injection molding machine needs to be placed on a concrete floor, which has a large load-bearing capacity and can meet the requirements of the injection moulding machine. If the ground is not concrete, then you need to calculate the load-bearing capacity of the ground and compare it with the weight of the injection moulding machine to ensure that the ground can bear the weight of the machine.
Centre of Gravity Calculation
The location of the injection moulding machine’s centre of gravity needs to be taken into account when carrying out the calculation of the footing’s load-bearing capacity. The centre of gravity of an plastic chair injection molding machine is usually located in the centre of the machine or closer to the ground, so the foot needs to be placed in this position to ensure the machine’s stability.
Vibration Consideration
The vibration of the injection moulding machine during operation must also be considered. The injection moulding machine will generate vibration when working, which will also impact the foot’s stability. Therefore, the vibration frequency and amplitude of the injection moulding machine need to be taken into account in the calculation of the load-bearing of the footing to ensure that the footing can withstand the vibration during work.
Installation Method and Foot Material
In addition to the above points, it is also necessary to consider factors such as the installation method of the injection moulding machine and the material of the foot. There are two types of installation of injection moulding machines, fixed and mobile, and different installation methods will have different impacts on the calculation of the load bearing of the foot. The material of the foot also affects its load-bearing capacity. Generally speaking, the foot is made of high-quality steel to ensure its strength and stability.
Final Thoughts on Foot-Bearing Calculation
The calculation of the foot of the machine is an important step to ensure the stable operation of the plastic chair injection molding machine. In this calculation, you need to consider the basic information of the machine, ground load-bearing capacity, the position of the center of gravity, vibration, installation method, and foot material. Accurate calculations ensure the safe operation of the machine, improve production efficiency, and prevent accidents.
Workshop Floor Requirements
Generally speaking, the load-bearing capacity of the injection moulding machine workshop should be able to withstand the total weight of the equipment, as well as the weight of the staff and materials.
The requirement of plastic chair injection molding machine on the floor of the workshop is quite strict, not only need a certain level, but also have certain requirements on the load capacity of the floor. Generally, models above 600 tonnes also need to build the foundation, therefore, when purchasing the injection moulding machine, you need to ask the supplier of the injection moulding machine for a copy of the foundation plan of the model, to understand the requirements of the model on the ground and the details of the foundation. If the plant has been built, the customer does not want to change, it is necessary to assess the ground loading capacity, the ground loading capacity is not enough also need to take remedial measures, such as laying iron plate. Factory foundation requirements are generally: 60-600t, ground bearing weight 10t/m³; 600-1000t, ground bearing weight 10t/m³; 1000-3000t, ground bearing weight 12t/m³.
Foundation requirements for injection moulding machines larger than 600t:
① The foundation bedding is stone
② D18 steel bars are used to form a steel mesh with a spacing of 250mm, two layers, the bottom layer is 75mm away from the bottom of the pit, and the top layer is 50mm away from the upper layer of the pit.
③ Standard C25 concrete is used for pouring, and the construction is vibrated and compacted.
④The second grouting layer is made of C30 fine stone concrete, and the installation surface is levelled.
⑤All concrete foundations should be maintained for 28 days before installation.
⑥ Reserve square pits for machine installation, put in the ground bolts, pouring concrete, after determining the shape (at least one week), before starting the machine.
The calculation formula is (for reference only):
Assume that the weight of the device is W (in kg), the number of feet is N, and the dimensions of each foot are L1, L2, L3, etc. (in meters). The calculation formula is as follows.
1. Calculate the load of the footing: Set the load of each footing as Q (unit: Newton).
Then there is Q = W / N.
2. Calculate the bearing capacity of the footing on the ground: let each footing bear the ground area for A (unit: square meter), then there is A = W/N.
Square meter), then there is A = π * (L1/2)^2.
3. Calculate the single-point bearing capacity of the footing: Assuming that the single-point bearing capacity of each footing is P (unit: Pascal), then there is A = π*(L1/2)^2.
Sc), then we have P=Q/A.
In this way, through the above formula, we can get the single-point bearing capacity of each foot. According to the specific actual situation, we can choose the appropriate size and number of feet to ensure that the equipment on the ground bearing capacity does not exceed the ground’s carrying capacity.