CN2179852Y - PE film tight sealing device of automatic cloth packaging machine - Google Patents

Abstract

A PE film of the cloth packaging machine of full automaticity seals the device closely, the sealing knife of the apparatus is that copper metal or equivalent material are formed integrally, its bottom shrinks into the sealing joint of about 10mm width gradually, there is a slot in the centre of the sealing joint, can inlay and set a steel blade, there is a groove in the sealing knife for an electrothermal tube to put into, and there are fixed blocks above the sealing knife and push rods of the lifting seat to link and fix; moreover, a groove is arranged on the platform opposite to the sealing knife for embedding the heat-resistant silicon organic compound strip. Through the combination of the components, the PE film has the effects of tightly sealing the PE film and avoiding generating cracks and creases.

Description

The utility model relates to a PE film tight sealing device of a fully automatic cloth packing machine. Press, the conventional PE film sealing method of cloth is shown in Figure 1. The cloth 11 is fed into the PE film 12 of the packaging machine, and then a cutting knife 14 is driven by a vertically movable seat 13 to seal the PE film on the platform 15. The film 12 is cut and welded. The schematic diagram of the welding is shown in Figure 2. Generally speaking, the two sides of the commonly used PE film cutter 14 are equipped with electric heating wires (heating sheets) 16 close to the knife edge 141. The cutter 14 is used to cut At the same time as the PE film 12, the PE film 12 at the front end a and the rear end b is heated instantaneously to weld the PE films on both sides of the cutter 14 due to heat. This conventional PE film packaging method for cloth has the following features: Missing:

1. Because the length of the general cloth roll (piece) is very long, the length of the cutter 14 and the width of the PE film 12 must also be very long. Therefore, when the cutter 14 moves down to the heat-resistant sponge 17 of the platform 15 , because the heat-resistant sponge 17 is a buffer zone to prevent the cutter from directly impacting the platform 15, it is a soft body, so the edge 141 of the cutter 14 cannot flatten the PE film, so that the welded PE film 12 often appears There are no welded cracks 18, as shown in Figure 3, therefore, the staff must use adhesive tape to seal these cracks 18, otherwise, when the cloth 11 is moved, its cracks 18 will spread along the weld line 19 and become defective products.

2. The conventional PE film 12 packaging method completely utilizes the high temperature (about 150-200°C) of the heating wire (heating sheet) 16 to melt the PE film 12 and fix it. Therefore, the surface of the welding line 19 will shrink and wrinkle. The joint tension relationship makes the cloth roll 11 also prone to wrinkling on the surface, which damages the appearance.

3. Some commonly used cloth roll PE film packaging machines, in order to prevent the welding line 19 from being flat, there will be cracks 18, so the width of the welding line 19 is increased, or the diameter of the heating wire 16 is increased or Width or temperature, so that the welding can be completely fixed, but the result is that the welding line 19 at both ends is larger and thicker, and the PE film 12 will shrink more because of the higher temperature, so the more wrinkles , making the whole package even uglier.

The conventional cloth PE film packaging method has the above-mentioned deficiencies because it is the result of not knowing the characteristics of the cloth and PE film, and only relying on thermal melting to fix it. After research, the designer aimed at the above-mentioned problems, and propose solutions.

The main purpose of this utility model is to provide a PE film tight sealing device for a fully automatic cloth packaging machine, which makes it difficult to fix the joint line of the PE film through the close fit of the sealing head and the heat-resistant silicon organic compound of the base. Cracks, and the surface is flat without wrinkles, which has the effect of enhancing the appearance.

The PE film tight sealing device of the automatic cloth packaging machine provided by the utility model is mainly composed of a sealing knife, a steel blade, an electric heating tube, a fixing block, a positioning sleeve, a lifting seat, a platform, a heat-resistant silicon organic compound (Silicone), etc. combined;

in:

The sealing knife is integrally formed of copper metal or equivalent material, the bottom of which is tapered into a sealing head with a width of about 10mm, and there is a gap in the center of the sealing head, which can be nested with a steel blade, and there is a groove in the sealing knife An electric heating tube can be placed, and a fixed block is provided above the sealing knife to connect and fix with the push rod of the lifting seat; moreover, the platform is provided with a groove relative to the sealing knife for embedding a heat-resistant silicon organic compound strip; Through the combination of the above components, it has the effect of tightly sealing the PE film without cracks and wrinkles.

Accompanying drawing now is further described to the structure of the present utility model, feature and effect.

Description of drawings:

Fig. 1 is a schematic diagram of a conventional PE film sealing device for common cloth.

Fig. 2 is the cut-away view of the PE film sealing of conventional cloth.

Fig. 3 is a schematic diagram of the conventional cloth after packing.

Fig. 4 is a schematic structural view of the utility model.

Fig. 5 is a schematic diagram of the tight seal of the utility model.

Fig. 6 is a three-dimensional view of the packaged cloth of the present invention.

Fig. 7 is a side view of the packaged cloth of the utility model.

First, please refer to Figure 4, which mainly includes a combination of sealing knife 2, steel blade 3, electric heating tube 4, fixed block 5, positioning sleeve 6, lifting seat 7, platform 8, heat-resistant silicon organic compound strip 9, etc. Formed; the sealing knife 2 is integrally formed by copper metal or metal with good thermal conductivity, and its bottom is tapered into a sealing head 21 with a width of about 10mm, and a gap 22 is provided in the center of the sealing head 21 to nest and fix a steel blade 3. There is a groove 23 inside the sealing knife 2, in which an electric heating tube 4 is placed, and a fixed block 5 is arranged above the sealing knife 2, which is connected and fixed with the push rod 71 of the lifting seat 7. Furthermore, the The outer side of the sealing knife 2 is provided with a slightly long positioning sleeve 6, which is pressed against the top of the fixed block 5 by the thrust of the compression spring 72 on the push rod 71; flanges 81 are provided on both sides of the platform 8 to make the PE film 12 is positioned, and a concave groove 82 is provided above the platform 8, and a heat-resistant silicon organic compound strip 9 is embedded in the concave groove 82, and a small hollow body 91 can be set in the middle of the silicon organic compound strip 9 to increase elasticity; The PE film 12 for packaging mainly passes through the sealing knife 2 from top to bottom as indicated by the arrow, and wraps the cloth 11 (not shown in Figure 4, please refer to Figure 2) and then wraps around the platform 8. What the sealing head 21 seals on the right side B of the steel blade 3 is the end b of the PE film 12 that has covered the cloth 11, and what is sealed on the left side A of the steel blade 3 is the PE film. 12 wraps the front end a of the next piece of cloth 12', that is, the sealing knife 2 moves down to seal once, and seals both ends at the same time. Therefore, the front and rear ends a and b of the PE film 12 are equally important, and the utility model The front and rear ends a and b of the PE film 12 are tightly sealed at the same time, and the surface is flat without wrinkles.

Please refer to Fig. 5, when the lifting seat 7 moves down, the sealing knife 2 and the positioning sleeve 6 move down simultaneously under the thrust, because the positioning sleeve 6 is slightly longer than the sealing knife 2, so it first touches the platform 8 and passes through both ends Part 61 flattens the PE film 12 on the platform 8. At this time, the lifting seat 7 continues to move down, and pushes the sealing knife 2 to the platform 8 against the fixed block 5, until it touches the heat-resistant silicon organic compound strip 9 and stops. The heat-resistant silicon organic compound strip 9 is a heat-resistant tube with elasticity and hardness, so the surface is smooth, unlike the conventional heat-resistant sponge 17 that can shrink; and the sealing head 21 of the present utility model is an integrally formed plane, which can Two PE films 12 are tightly pressed on the heat-resistant silicon organic compound strip 9, and at the same time, the PE film 12 is tightly sealed by the heat temperature given by the electric heating tube 4 to the sealing knife 2, and the PE film is also sealed by the steel blade 3 at the same time. 12 is cut from the middle. The biggest difference between this sealing method and the conventional one is that the conventional one uses high temperature (150°C-200°C) to melt the PE film 12, and then joins the two PE films, so the conventional weld line The surface of 19 will shrink and produce wrinkles. On the other hand, the utility model does not use hot-melt method, but uses the appropriate temperature (about 80°C-120°C) on the sealing knife 2 to compress the PE film 12, so the PE film 12 does not There is no melting, which means that the two PE films 12 are joined by the pressure of the sealing head 21 after being heated, so the joint surface is complete and even, and the surface will not wrinkle, as shown in Figure 6 and Figure 7, the The joint surfaces a and b of the PE film 12 are each about 5mm (because the sealing head 21 is about 10mm, and the steel blade 3 cuts off from the middle), it will not be too wide or too narrow, because it is too wide and unsightly, and too narrow. Not enough joints.

To sum up, the tight sealing device designed by this utility model for the characteristics of cloth and PE film has deviated from the conventional hot-melt fixing format, and this utility model utilizes the thermal conductivity of copper sealing knife and the ability of replaceable steel blade Convenience, combined with heat-resistant silicon organic compound strips with appropriate hardness and elasticity, can indeed achieve the desired effect.

Claims (1)

1. A PE film sealing device for a fully automatic cloth packaging machine, including a cutter, lifting seat and platform; It is characterized by: The above tool is a sealing knife integrally formed of copper metal or equivalent material, the bottom of which is tapered into a sealing head with a width of about 10mm. There is a gap in the center of the sealing head, and a steel blade is embedded in it. The slot is for an electric heating tube to be inserted, and a fixed block is provided above the sealing knife to connect and fix with the push rod of the lifting seat, and a positioning sleeve slightly longer than the sealing knife is provided on the outside of the sealing knife; There are grooves in which strips of heat-resistant silicone compound are embedded.

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