1. Packaging items are arranged in a regular number of counting method (1) Accumulation counting method so that the items have a certain regular arrangement, according to a certain length, height, volume removed to obtain a certain number, this method is often divided into the following categories:
a. Length count method This count method is commonly used in biscuit packaging, matchbox packaging, cloud cake packaging, cigarette packaging and so on. The method of metering is that the material is sent to the metering chamber through the conveyor, and the end has electrical contacts or mechanical control devices. When the packaged object reaches the end, the control device is forced to generate a signal to make the propeller move and the metering object will be required. Push the packaging on the packaging material, as shown in Figure 9-18. Due to the regular shape of these articles, with certain geometric dimensions, the length, thickness, and width of the stacks of boxes, boxes, and blocks also have a definite value. Only by selecting the length of the pusher can a certain amount be obtained. The length of the board is less than the stacking length of the specified box number.

As shown in Fig. 9-19, another form of the length counting method, a certain amount is obtained by reciprocating the push rod once.

b. Volume counting method This method is commonly used for counting cigarettes on small packet machine and match cartoning machine. Fig. 9-20 shows that the matchstick is loaded into the silo in order and loaded in the silo. The silo is driven by the cam mechanism to vibrate. In order to avoid bridging, the matchstick can be filled with the measuring chamber smoothly, and the gate is controlled by the cam mechanism to open and close the time. After the measuring matchstick is fed into the box in the chamber, the gate is closed, and the silo and the chamber for measuring the volume are closed. Complete the metering process. This measurement method can reach approximately the same number.

c. Accumulation count method Stack count method is mainly used for different varieties, and each variety has a certain number of counting packages, as shown in Figure 9-21. For example, in four hoppers, there are four different colors of packaging items, one for each. The metering boat makes intermittent movements, moves a square, and sends a packet from the hopper to the boat. After moving four times, it completes the packaging of four different colors for each large bag. This method can also be used for a certain difference in shape and size. The counting package for the material.

(2) The counter arranges the items neatly and regularly, and the devices counting sequentially one by one are called counters. There are two general categories: mechanical counters and photoelectric counters.
2. There are three main forms of this method, namely rotary table counting, rotary counting and counting.
Turntable counting method, this method is mainly to use a special quantitative plate to measure the amount of filling material, this type of turntable can make several sets of measuring holes according to the required spacing and size, the quantitative plate driven by the transmission device continuous or intermittent operation, each The group metering holes receive the material under the hopper, one for each hole, and when the material is transferred to the discharge port, the material is automatically dropped to drop the material and filled into the container. This method is suitable for quantitative automatic packaging of granular products such as pills, chocolates, confectionery, steel balls and buttons, and has high filling efficiency.
The measuring principle of the rotating wheel counting method is basically the same as that of the rotary table. The hole (blind hole) is on the rotating wheel. The rotating wheel is used in the hopper to make the material automatically fill in the measuring hole. It can be used for automatic package measurement of small diameter granular materials such as jelly beans, steel balls, and buttons.
Counting scale counting method, which is a kind of scale manufactured using the principle of leverage, the counting principle of the scale is: using various forms of inequality, such as a very large scale or a hundredth scale. When measuring objects on these scales, the weight used to make a stable weight with the objects to be measured can be 1/10 or 1/100 of the objects being counted. The metered quantity of item is placed on the load bearing device, and the same item used for stationary is placed on another small weight plate. Then multiply the number of items in this tray by the arm ratio (10, 100, etc.) shown on the balance bar to find the number of items on the load-bearing device. On a similar scale, if its arm ratio is 10 or 100, it is also possible to measure the same 10 or 100 times the number of items, which is the number of items.

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