SU734079A2 - Arrangement for emptying bags with loose material - Google Patents

Description

The invention relates to equipment for unpacking bulk bags and can be used in the construction, chemical and food industries. According to the main author. St. No. 528236, a device for unpacking bulk bags is known. This device is made in the form of a camera with a loading opening hinged at the loading opening of the camera pivoting platform with a stop and mounted on it with the possibility of reciprocating movement of the spiked trolley, which has a grip for engagement with the platform lever, while contact with the platform arm. A disadvantage of this device is increased dustiness in the workplace, since when the bag is removed, despite its fairly complete emptying, dusting still occurs. The aim of the invention is to increase productivity and improve working conditions. The goal is achieved by the fact that the proposed device is equipped with a device for expanding the edges of the bags, pivoted for rotation under the loading opening, with a spike conveyor for emptying the bags and a device for dropping the bags fixed at the exit. The device for expanding the edges of the bags is kinematically connected with the drive of the platform and consists of two curved guides mounted on the plate axis. FIG. 1 shows the described bag unloading device, side view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2. The proposed device consists of a chamber 1 with a filling opening 2. In the chamber 1 there is a viewing window, an illumination lamp and a flange for connecting exhaust ventilation. At the lower part of the loading opening 2 a rotary platform 3 is installed, on which is mounted with the possibility of reciprocating movement in the guides 4 and the carriage 5 with studs for receiving the bag 6.

The cart 5 is coupled to the platform 3 by a spring mechanism 7.

In the chamber 1, the stop 8 is fixed to interact with the lever of the spring mechanism 7.

Inside the chamber 1, at the lower part of the inlet 2, there is a device for expanding the edges of the bags containing its shaft 9 mounted in supports fixed to the chamber 1. In the longitudinal plane of the shaft 9 there is a plate 10, made, for example, of a rod. Bent directions 11 are fastened to it. At the end of shaft 9 a gear wheel 12 is mounted, which is meshed with gear wheel 13 fixed on the shaft of the turntable 3.

In the chamber 1, a conveyor 14 is installed to remove the bags 6, and the conveyor belt is provided with spikes.

The opening in the chamber 1 for the conveyor 14 is sealed by a curtain 15 made, for example, of rubber.

At the end of the conveyor 14, a device 16 for dropping the bags and a container 17 for receiving the empty bags are installed.

The device works as follows.

In the initial position, the rotary platform 3 is located outside the chamber 1 in an inclined position, while the trolley 5 is a bent, captive with platform 3 by the spring mechanism 7.

The spikes of the carriage 5 are packed with bag b, which is then cut or torn.

After switching on the drive (not shown), platform 3 rotates and enters inside chamber 1.

When the platform 3 rotates synchronously with it, it is rotated by the kinematic connection of the gears 12 and 13, the plate 10.

At the final moment of rotation platform 3 closes the loading opening 2, providing a sealing device. In this case, the plate 10 is installed in the longitudinal plane of symmetry of the bag 6. At this moment, the stop 8 interacts with the lever of the spring mechanism 7, ensuring the uncoupling of the carriage 5 with the platform 3. The carriage 5 with the bag 6 fixed on the spikes moves along the direction of gravity 4 down before meeting with the stop. When the carriage 5 is moving, plate 10, guides 11 enter inside bag 6 and additionally pave a hole in it through which material is poured out, which provides even more complete unloading as compared to the prototype.

After switching on the drive, platform 3 returns to its original position. Due to the inclined position of the platform 3, the carriage 5 rolls down along the guides 4. In this case, the carriage 5 engages with the platform 3 by means of a spring mechanism 7.

When the platform 3 is rotated to its initial position, the plate 10 with the guides 11 due to the kinematic connection of the gear wheels 12 and 13, turning in the opposite direction, removes the shed 6 from the spikes of the cart 5 and transfers it to the conveyor 14.

The spikes on the conveyor belt 14 allow the bag 6 to be removed from the guides 11 and taken out of the chamber 1,

At the end of the conveyor 14, a device 16 is installed to drop the bags at the same time as the tray along which the bag 6 is directed to the container 17. A new bag is then placed on the pins of the carriage 5, and the cycle is repeated.

The proposed device does not require the removal of an empty bag at the workplace and placing it on a pallet, i.e. it increases J labor productivity. At the same time, the working conditions are improved because there is no dustiness at the workplace, which occurs when the empty bag is removed and laid, and the bag is more completely empty, since at the time of 0 unstitching, the opening is artificially expanded in the longitudinal and transverse directions with the plate and guides.

Formula of the invention

Claims (3)

1. Device for unloading bags with bulk material according to ed. St. No. 528236, characterized in that, in order to increase productivity and improve working conditions, the device is provided with a device for expanding the edges of the bags, a spike conveyor for emptying the bags and a device for dropping the bags fixed at the exit. 2. A device according to claim i, characterized in that the device for expanding the edges of the bags is kinematically associated with the drive of the platform. 3. The device according to claim 1, characterized in that the device for expanding the edges of the bags consists of two curved guides fixed on the axis of the plate.