Buy a manipulator, don't be fooled by the salesman!

Release time:

2017-08-23

Injection molding industry as a labor-intensive industry. In recent years, with the rapid growth of China's labor wage level, and the price of the manipulator is becoming more and more cost-effective. The investment cost of the robot can basically be achieved about a year to recover the investment, and the robot is being popularized in more factories.

Customers who have been engaged in the injection molding industry for many years have the ability to judge and choose the right manipulator to cooperate with the injection molding machine. However, in some cases, the customer may need the assistance of the manufacturer to decide which specification of the manipulator to use, and even the customer may only have some idea, and then ask the manufacturer whether it can realize automated production, or which type of manipulator is more suitable.In addition, some special products may need to be matched with special devices such as in-mold action, outside-mold tooling, automated assembly lines, etc., in order to be more efficient production.

Thus, how to determine the appropriate robot program, is an extremely important issue. As long as you have a simple understanding of the following points, you can have a preliminary judgment on the purchase. The following information is provided for the reader's reference.

First, understand what is: X, Y, and Z axes.

The X-axis is generally defined as the pilot stroke. It is usually related to the thickness of the product.

Y axis is generally defined as the vertical up and down stroke, is installed on the injection molding machine, down to the product height of the decision.

The Z axis is generally defined as the horizontal back and forth movement axis, and the size of the horizontal stroke is the side of the injection molding machine to put the part down.

The important factors that usually affect the choice of manipulator include the size of the injection molding machine,Mold structure, product size or shape, product weight, etc., therefore,The following information must be collected or understood before making a selection:

Serial Number	manipulator parameters	Involving parameters	Remarks
1	Up and down stroke (Y)	Height of formwork center, outer dimension of product, etc.	get it
2	Trip stroke (x)	Mold size, structure, product size, etc.	Get Out
3	Transverse travel (Z)	Height of safety gate, distance from template center to conveyor belt, etc.	put it down
4	lifting weight	Product Weight	Enough to hold
5	Empty cycle period	Injection molding production cycle	Take it fast
6	In-mold occupancy time	Effects of using and not using manipulators on the production cycle	No time-consuming
7	Double or single arm	The mold is three plates with double arms PR and two plates with single arms P.
8	Single-cut or double-cut	Workshop or crane height
9	Select a few axis manipulator	Whether the product in the mold needs to be moved in the mold when it is taken out.

After obtaining the above information, you can follow the following steps to select the appropriate injection machine:

1. Choose the right type to get it: it is determined by the size of the injection molding machine.

Since there are many types of injection molding machines, it is necessary to correctly judge the size of the manipulator of the injection molding machine at the beginning. The following table is the injection molding machine model and manipulator model matching table.

2, obtained: determined by the mold and product form size.

Manipulator removal methods are generally:

"Suck""Clip", "Hold""Combination Type"Wait.

Note: Not every mold structure Kowey removed with a robot. Whether the demoulding of the mold Kowey obtained depends on whether the size of the product Kowey taken out from the spacing of the Corinth pillars.

3. Kowey put down: The height of the safety door and the size of the finished product are used to determine whether the finished product is sufficient to be taken out.

The safety door height of each injection molding machine brand is different, so it is required that the raised seat of the manipulator should be matched with the injection molding machine. Otherwise, the product will not be available. When the size of the product is too large to be directly horizontal, whether there is room for the product to be turned horizontal should be considered.

4. Enough strength: The weight of the product is also a factor that determines the model of the manipulator.

The maximum load of the manipulator refers to the total weight of special metallurgical tools such as fixtures, hugs, suction disc racks and the weight of the product together. When selecting the manipulator, special attention should be paid to the weight of the product metallurgy not exceeding 80% of the machine parameters, otherwise, the manipulator is easy to damage and affect the service life of the machine.

5. Take it fast: Choose a servo motor to move much faster than a cylinder.

The X and Y axis movements of the one-axis manipulator are completed by the cylinder, and the Z axis movement is completed by the servo motor.

The X axis movement of the two-axis manipulator is completed with the cylinder, and the Y\Z axis is completed by the servo motor.

Three axis manipulator X, Y, Z axis direction action is completed by the servo motor.

Relative to the cylinder structure, the servo motor is much better in terms of speed, position accuracy and durability. For the production speed, position accuracy and durability requirements of the best use of the servo structure of the manipulator.

6, no time-consuming: mainly refers to the time occupied in the mold (take time) to be short.

In-mold occupancy time: refers to the difference between the full-automatic production cycle when the manipulator is not used and the full-automatic production cycle after the manipulator is used. For example, in the production of fast food boxes, the cycle of automatic production of high-speed injection molding machines without manipulators is about 4.5 seconds. If the robot is used, the cycle becomes 5 seconds. The in-mold occupancy time of this manipulator is then 0.5 seconds. A 10% increase in 5 seconds over 4.5 seconds means a 10% reduction in production, which is a pretty scary thing. At this time, the brand manipulator with less time in the mold should be selected.

7. Choose double arms or single arms: the mold is three plates with double arms PR and two plates with single arms P.

8. Select single section or double section: depending on the height of the crane or workshop, there should be space to install the manipulator and do not touch the objects above when taking products.

9, choose a few axis manipulator:

For production speed, position accuracy and durability requirements, it is best to use a three-axis servo manipulator.

For injection molding products to be taken out or put into the mold for action, servo motor control Kowey added to the manipulator metallurgy department, and four-axis or five-axis manipulator Kowey selected.

10, cattle head type fully open manipulator: mainly used in more than 1000T injection molding machine. The characteristic is that the rising space of the manipulator is not limited, and the larger products Kowey taken out.

11. External tooling: different external tooling such as cooling, nozzle cutting, punching, shaping, labeling, stacking, automatic feeding, metal inserts, etc. Kowey completed.

After reading this article. Hope to help the majority of manipulator practitioners or merchants...

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