SU486963A1 - Device for packing bulk products in bags - Google Patents

Description

one

This invention relates to packaging packaging equipment for volumetric dosing and packaging of bulk solids with packaging.

The known devices for packing raw materials in bags contain a roll holder, a device for folding the tape in half, a mechanism for leveling the edges of the tape, a mechanism for forming vertical and horizontal seams on the tape, having levers with welding pads, a dispenser with a funnel, a mechanism for stepping the tape and scissors.

Such devices are inconvenient because it is difficult to fill the package with the product and the package is deformed when using paper of low rigidity.

In order to increase the reliability of the device and allow the use of packaging materials of various rigidity, the levers with welding blocks to provide a vertical seam should be equipped with an additional drive, for example, a pneumatic chamber, to move them in the direction of the tape movement, to establish a funnel between the blocks to form a vertical and one of horizontal stitches. At the same time, the end of its neck is located above the upper ends of the pads to form a vertical seam.

In addition, in order to change the size of the opening of the package cavity, an additional syabzhei dehydration is provided by a mechanism for adjusting the stroke, and the neck of the funnel has plane-parallel walls.

FIG. 1 schematically shows the proposed device; in fig. 2 is a section along A-A in FIG. one; in fig. 3 is a section along BB in FIG. one.

The device contains an electric drive 1 with a safety clutch 2 and a worm gearbox 3, which through a distribution shaft 4 and the system: the fist 5, the lever 6, the spring 7 is connected with the tape drive mechanism 8.

In order to uniformly unwind the packing tape 9 from the roll 10 and its constant tension, there is an unwinding mechanism consisting of a shaft 11 with a brake disc 12 interacting with a brake shoe 13 fixed on the lever 14 on which the tension rollers 15 are mounted. For direction Ribbon serves as a system of guide rollers 16. To form vertical and horizontal gaps, three heat-sealing mechanisms 17, 18, 19 are installed through a pitch (step equal to the package width).

Each mechanism is equipped with a pair of welding blocks 20 symmetrical in profile,

21, 22, fixed on the moving arms

23 and 24, with one block relative to the lever fixed non-movably, and the other - secured, for example, on a low spring 25. And the force applied to the block is transmitted through a point emphasis 26. Each pair of interacting blocks on the working surface has corrugations.

To form seams, the levers are equipped with either two pneumatic chambers -27, as in a heat-sealing mechanism 17, or one pneumo-chamber 27 and a cam 28, as in heat-sealing mechanisms 18 and 19. Springs 29 serve to return the levers to their original position. A pneumatic chamber 30 interacting with a spring 31 serves to additionally move the mechanism 17 in the direction of movement of the belt.

A mechanism for aligning the edges of the folded packing tape, consisting of two pairs of cooperating spring loaded rollers 32 installed at an adjustable angle to the direction of movement of the tape, and a bracket 33 with two pairs of protrusions parallel to the fixed guide rails 34 are located in front of the mechanism 17.

A bin 35 of the hopper to form a large dose of bulk product is provided with an outer annular chute 36 with an outlet nipple 37 freely entering the intermediate cylinder 38 movably fixed in the fork 39, which is under the constant influence of the spring 40.

The rotary transnorthosing disc 41 has several apertures 42, which are concentrically fixed to the dose-forming chasps in the form of two telescopic cups 43 and 44. The rotary disc 41 through a gear transmission with a gear ratio equal to the number of apertures 42, and the shaft 45 is connected to the electric drive 1.

Coaxially with the rotary disk 41, there is a fixed disk 46 in which there is one opening 47 for feeding a dose of a granular product into the funnel 48.

A vibration metering device 49 for forming a small dose has an opening 50 in the upper tray, and a window 51 is made in the side wall of the container between the trays under the opening 50 to enter under the opening 50 the dispensing brush 52 with a folding bottom 53 and a swinging scraper 54.

The metering strap 52 is fixed on the stalk 55, which is kinematically connected through the cam 56, gears 57, 58, and the electric drive shaft 45. To open the flip bottom 53 of the dosing stump 52 over the funnel 59, an emphasis is placed 60. Scissors are installed through the spindle from the pads 22 61 with a pneumatic power actuator 62 for separating the finished pre-packaged bag 63 from the packaging tape 9. A spool valve 64 is installed to control all the pneumatic chambers.

The device works as follows. Tape mechanism / kny mechanism 8 under the influence of the system: cam 5, lever 6, spring 7 does not rarely fill the mite 9 on the schag,

equal to the width of the package 63. In this case, the tape, pulling on, lifts the lever 14, and the brake pad 13 releases the roll 10, which is unwound until the lever 14 is lowered under the action of its own

the weight before the brake shoe 13 contacts the brake disc 12.

After the belt is stopped, the cavity of the bag is molded in parallel, filled with a measured dose, and the finished bag is cut off.

The molding of the lower B and upper G cavities of the package takes place with the help of heat-sealing mechanisms 17, 18, 19. Under the influence of the pneumatic chambers 27 and the cams 28, the levers 23 and 24 move to interact

symmetrical on the profile of the welding pads 20, 21, 22.

A pair of vertical pads 20 forms a vertical bottom of the lower cavity, a pair of horizontal pads 21 - the lower horizontal of the upper cavity, and horizontal pads 22 - the upper horizontal of the upper cavity of the package. Horizontal pads 21 with a U-shaped working profile form a preliminary pocket

upper cavity package. Pad 22 with a U-shaped working profile brew fully packaged package.

Simultaneously with welding, preformed

package cavities measured doses of bulk products.

The lower cavity of the bag from the funnel 48 is filled, the neck of which is inside the folded packing mite, somewhat higher than the upper end of the vertical welding blocks. At the time of filling, the mechanism 17 of the vertical seam under the influence of the pneumatic chamber 30 moves along the direction of movement of the tape, increasing

volume of the lower cavity of the package to sleep.

Formation of a large dose of bulk product is performed using a bunker-dose device as follows. The flow of bulk product through the hole

in the tray 36 and the nozzle 37 fills the metering boxes through the intermediate cylinder 38 and the opening 42 in the rotary disk 41. In this case, a supply of bulk product in several doses is formed above the metering boxes,

which increases the reliability of dose formation. When the rotary disk 41 is rotated, the cut off dose during the passage over the opening 47 is poured into the cavity of the bag. Formation of a lower dose of bulk product

carried out with the help of another bin dosing device.

Through the window 51 in the side wall of the bowl 49, the dosing pulley 52 is introduced under the flow of the bulk product, which fills it with

overflow. When the chuck 52 moves backward, the swinging scraper 54, removing the excess product, returns it back to the cup 49, while ensuring a certain dose. When the rod 55 moves in the opposite direction, the folding protrusion 53, hitting the stop 60, opens the metering cup 52, and the resulting dose is dropped through the funnel 59 into the upper cavity of the bag.

The finished packaged bag 6 is cut off with scissors 61. After the bag is separated, the grippers of the tape mechanism 8 are opened and the bag 63 falls on the dispenser tray. The mechanism 8 is transferred to the far left position to re-grip the free tap of the pile. At this moment, the injector 29 divorces the levers of the welding mechanisms, the pads release mite 9, the tape mechanism 8 again moves the belt to niar, and the cycle of operation of the device repeats.

Subject and title

1, Device for packaging bulk products in packages containing a roll holder, a device for folding the tape

in half, mehkapizm for leveling the edges of the tape, a mechanism for the formation of vertical and horizontal gaps on the lect, having levers with welding pads,

a hopper with a funnel, a mechanism for stepping the belt and scissors, characterized in that, in order to increase the reliability of the device in operation and the possibility of using a packaging material of different stiffness, enne them in the direction of interlacing the ribbon,

and a funnel is installed between the pads to form a vertical and one of the horizontal tivs. wherein the end of its neck is located above the upper ends of the pads for forming a vertical seam.

2. Device no. 1, characterized in that, in order to change the size of the opening of the package, the additional drive is equipped with a mechanism for adjusting the stroke.

3. Device but n. 1, I differ from the fact that the neck of the funnel has plane-parallel walls. J6 J7.) 8 33 ttO 52 50

Aa

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6-6

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