Quantificational packing machine

Abstract

The invention relates to a quantificational packing machine. The quantificational packing machine mainly comprises a hopper (1), a second feeding door (2), a feeding groove (3), a large feeding control door (4), a small feeding control door (4'), a weighing hopper (5), a discharging door (6) and a sensor (8), wherein the second feeding door (2) is arranged below the hopper (1), and the feeding groove (3) is arranged below the second feeding door (2); the large feeding control door (4) and the small feeding control door (4') are arranged at the bottom of the feeding groove (3), and the weighing hopper (5) is arranged below the large feeding control door (4) and the small feeding control door (4'); the discharging door (6) is arranged at the lower end of the weighing hopper (5); and the sensor (8) is mounted above one side of the discharging door (6), connected with the weighing hopper (5) by a pull rod (7) in a hanging way and mounted on a stand (9). The quantificational packing machine can be a hopper-free quantificational packing machine if the weighing hopper (5) is replaced by a packet-clamping device for direct packing or can be a quantificational package packing machine if the weighing hopper (5) is replaced by a package-strutting support (51). The volumetric feeding amount of the feeding groove (3) is considered as a first feeding amount, and a unit total amount equals to the sum of the first feeding amount and the feeding amounts of the second feeding door (2) and a third-stage small feeding control door (4'). The quantificational packing machine is characterized in that the first feeding amount exceeds 30 percent of the unit total amount within an allowable shortest time. The invention has stable operation, accurate measurement, high efficiency, long service life, strong suitability, wide range and simple operation.

Description

(1) Technical field [0001] The invention relates to the technical field of packaging machines, in particular to an automatic machine for quantitatively weighing and packaging bulk solids, fluids and other products. (2) Technical background [0002] The Chinese patent application with the application number 200410100946.1 discloses "a bag filling machine". It has achieved remarkable results in achieving three-level feeding, but there are still many deficiencies. As early as the late 1970s and early 1980s, we came into contact with The three-level feeding method to solve the weighing efficiency of the quantitative packaging machine is understood, but the current packaging machinery still uses the weighing and measuring method of the thick and thin two-level feeding, or although there are cases of using the three-level feeding, it is also in the The distribution of feed materials at all levels is too far from the standard value, so they cannot be mixed into three-level feed mat...

AI Technical Summary

Problems solved by technology

[0002] The Chinese patent application with the application number 200410100946.1 discloses "a bag filling machine". It has achieved remarkable results in achieving three-level feeding, but there are still many deficiencies. As early as the late 1970s and early 1980s, we came into contact with The three-level feeding method to solve the weighing efficiency of the quantitative packaging machine is understood, but the current packaging machinery still uses the weighing and measuring method of the thick and thin two-level feeding, or although there are cases of using the three-level feeding, it is also in the The distribution of feed materials at all levels is too far from the standard value, so they cannot be mixed into three-level feed materials. In addition, due to the complexity of packaging materials: such as those that are easy to flow, those that are not easy to flow, those that have a large specific gravity and those that have a small specific gravity, and The characteristics of powdery, granular, columnar and flake, etc., determine the stability and accuracy of weighing, the complex characteristics and important position in the packaging machine, and the problems that existed in the past also illustrate this aspect: 1. The amount of the first-stage feed is too small, not exceeding 30% of the total measurement of the unit. Everyone generally requires high precision and high efficiency. To meet this requirement, 30% of the first-stage feed is obviously too little; 2. Trace feed time The setting of less than 50% of the total feeding time makes it difficult for the three-stage feeding to operate stably; 3. In the past, the metering control material door adopts a single arc door structure, which has a long switching time and a large drop, which prevents the improvement of metering accuracy. There is a control material door similar to the present invention, but it is not used for the control of packaging and weighing, especially the direct packaging machine made of packaging bags, packaging boxes, etc. instead of measuring buckets, called bucketless quantitative packaging machine, which has outstanding performance; 4. All forms of quantitative packaging machines set the sensor on a horizontal plane, which is not conducive to the stability of high-efficiency work, and will also reduce accuracy and efficiency; 5. After the first-stage feeding volume is increased, there is hope for faster efficiency. It also needs to have a stable structure. Now the common stabilization method is to connect the side of the metering bucket horizontally with the casing with a thin rod, and some do not connect it, which will not achieve the proper stabilization effect, such as the MB that is being used in major ports. -1800 mobile bag filling machine and WBN-50AD fixed bag filling machine; 6. The self-weight of the measuring hopper is smaller than the weighing weight, and even the self-weight is smaller than the weighing, which is easy to cause disturbance during the feeding process, making the weighing control unstable. , such as the current fixed packaging machine, non-measurement bucket quantitative packaging machine, etc., the bottom weight of their weighing scales is generally 5-30kg, but the unit work weighing is mostly on 50-80kg; Buffering and stabilizing device, when the feeding speed is too fast, the drop is often larger, the measurement fluctuation is large, and it is easy to appear out of tolerance

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