A material unloading and sealing device for a continuous heating pad machine

Abstract

The present invention relates to a heating patch machine, and specifically to a material unloading and sealing device for a heating patch production machine. It includes a unloading hopper, a material holding roller, a material holding trough, a packaging material I reel, a packaging material I conveying roller, a packaging material II reel, a magnetic conveyor belt, a magnetic block, and a sealing roller. The purpose is to provide a heating patch unloading and sealing device with a simple structure, simple maintenance and operation, which reduces or eliminates the phenomenon of material clamping and leakage, and realizes continuous unloading and continuous sealing of materials. The beneficial effects of the present invention are: the feeding and sealing action runs continuously, and the iron powder heating material is concentrated and not scattered during sealing, so that the product's finished product qualification rate and production efficiency are greatly improved; compared with the patent part of 20160516, the structure is simpler, and the processing and maintenance costs are greatly reduced. There is no fixed magnetic block on the inner ring of the material conveying roller and the material receiving roller, which also solves the problem of the iron powder material falling to the bottom material as the conveying roller runs.

Description

Technical Field

[0001] The invention relates to a heating pad machine, in particular to a material unloading and sealing device of the heating pad production machine. Background Art

[0002] Warm patch, also called warm baby, warming patch, self-heating patch, etc., is a product that utilizes the oxidation reaction of iron powder to convert the heat energy released by the oxidation reaction of metal into heat energy for heating. Warm patch is composed of three parts: heat-generating material, non-woven breathable layer and adhesive layer. The heat-generating material is a polymer composed of iron powder, activated carbon powder, etc. After being put into a bag composed of non-woven breathable film and adhesive and sealed, it encounters oxygen in the air to produce iron powder oxidation reaction and continuously releases heat. The existing heat patch unloading and sealing device is realized by a cylinder, a unloading hopper, a unloading plate and a sealing device. The cylinder, the unloading hopper and the unloading plate form a drawer-type reciprocating motion. The reciprocating motion of the cylinder is used to drop the iron powder polymer material in the unloading hopper into the unloading plate by gravity, and then the material in the unloading plate is dropped onto the non-woven breathable film or adhesive substrate by gravity, and then the non-woven breathable film or adhesive substrate is dragged into the sealing device for heat sealing. The structure of this device is relatively simple, but because the reciprocating motion of the cylinder is used to unload the material, the iron powder material on the non-woven breathable film or the adhesive-backed substrate is intermittently transported forward, and the iron powder material is easy to scatter, causing the heat sealing edge to be clamped when entering the heat sealing, and the reciprocating motion also causes low production efficiency. The unloading method of patent 20160516 uses the tangential movement of the material conveying roller and the material receiving roller, and the two use mutually meshing synchronous gears. If the two rollers run in the same direction, when the material of the material conveying roller is to be transferred to the material receiving roller, the material grooves between the rollers move in opposite directions, and the relative running speed is doubled, which is prone to incomplete material transfer; if the two rollers run in opposite directions, there will always be a roller with the material facing downward. At this time, even if there is magnet adsorption, because the material is facing downward, and the material is not entirely composed of iron powder, it is inevitable that the material will fall. Summary of the invention

[0003] The purpose of the present invention is to provide a heating pad feeding and sealing device which has a simple structure, is easy to maintain and operate, reduces or eliminates the phenomenon of material clamping and leakage, and realizes continuous feeding and continuous sealing of materials.

[0004] The above invention is realized by the following technical scheme: a material unloading and sealing device of a continuous heating pad machine, which comprises a material unloading hopper (1), a packaging material I reel (2), a packaging material I conveying roller (3), a packaging material II reel (4), a material receiving roller (5), a material receiving trough (6), a magnetic conveyor belt (7), a magnetic block (8) and a sealing roller (9).

[0005] The feature is that the material receiving roller (5) is provided with a material receiving groove (6);

[0006] The packaging material I conveying roller (3) is tangent to the material receiving roller (5), and the packaging material is attached to the material receiving roller (5);

[0007] The magnetic conveyor belt (7) and the material holding roller (5) are arranged tangentially to each other vertically;

[0008] The magnetic conveyor belt (7) is provided with a coil magnetic block or a permanent magnetic block (8);

[0009] The magnetic block (8) on the magnetic conveyor belt (7) and the material receiving groove (6) on the material receiving roller (5) have an area that is comparable to or the same as that of the material receiving groove (6) on the material receiving roller (5);

[0010] The magnetic conveyor belt (7) and the material receiving roller (5) are controlled by gears, synchronous belts, chains or servo to achieve synchronous relative operation. When in operation, the position of the material receiving groove (6) on the material receiving roller (5) corresponds one-to-one to the position of the magnetic block (8) of the magnetic conveyor belt (7).

[0011] The operation process of the present invention is as follows: the iron powder material in the lower hopper (1) falls into the material storage groove (6) of the material storage roller (5) due to the effect of gravity. When the material storage roller (5) moves downward, the scraper in the lower hopper (1) scrapes the surface of the material storage groove (6) flat. At this time, the packaging material is attached to the material storage roller (5) through the packaging material I conveying roller (3) to wrap the material storage groove (6), and also wraps the iron powder material in the material storage groove (6) to ensure that it does not fall when moving downward. When it moves to the surface tangent to the magnetic conveyor belt (7), the packaging material wrapped with the iron powder material and the iron powder material in the material storage groove (6) are The iron powder material falls onto the magnetic conveyor belt (7). At the same time, due to the gravity and the magnetic attraction of the magnetic block (8) corresponding to the magnetic conveyor belt (7), the iron powder material also moves and falls to the top of the packaging material at the position of the magnetic block (8). Due to the magnetic attraction of the magnetic conveyor belt (7) and the magnetic block (8), and the continuous operation without the pause of the reciprocating intermittent motion, the iron powder material above the packaging material will not be scattered. The iron powder material moves forward with the magnetic conveyor belt (7), and the packaging material II reel (4) is hot-melt-sealed with the packaging material on the magnetic conveyor belt (7) and the iron powder material fixed on the packaging material by the magnetic attraction through the sealing roller (9).

[0012] The beneficial effects of the present invention are as follows: the feeding and sealing action is continuously operated, which saves the time and pause of the reciprocating motion of the cylinder, and greatly improves the production efficiency;

[0013] When the iron powder and packaging materials fall onto the magnetic conveyor belt, due to the dual effects of gravity and magnetic attraction, the iron powder is concentrated and does not scatter, which greatly improves the qualified rate of finished products.

[0014] Compared with the patent part of 20160516, the structure is simpler, without the fixed magnetic blocks on the inner ring of the material conveying roller and the material receiving roller, and also solves the problem of iron powder material falling to the bottom as the conveying roller runs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 : Structural schematic diagram of the present invention

[0016] Figure 2 : The three-dimensional structure diagram of the present invention

[0017] Figure 1-2 In the figure, 1- lower hopper, 2- packaging material I reel, 3- packaging material I conveying roller, 4- packaging material II reel, 5- material holding roller, 6- material holding trough, 7- magnetic conveyor belt, 8- magnetic block, 9- sealing roller.

[0018] The present invention is specifically implemented as follows: a packaging material I reel (2) is loaded with a non-woven fabric substrate of a heating patch packaging material, which is tangent to a material receiving roller (5) through a packaging material I conveying roller (3), the packaging material is attached to the material receiving roller (5), a lower hopper (1) is installed on the material receiving roller (5), and the heat-generating polymer material falls into a material receiving groove (6) on the material receiving roller (5) through the lower hopper by gravity.

Claims

1. A material discharging and sealing device for a continuous heating pad machine, comprising a material discharging hopper (1), a packaging material I reel (2), a packaging material I conveying roller (3), a packaging material II reel (4), a material receiving roller (5), a material receiving trough (6), a magnetic conveyor belt (7), a magnetic block (8) and a sealing roller (9), characterized in that: The material receiving roller (5) is provided with a material receiving groove (6), the packaging material I conveying roller (3) is tangent to the material receiving roller (5), and the packaging material is attached to the material receiving roller (5), the magnetic conveying belt (7) is arranged tangent to the material receiving roller (5) up and down, the magnetic conveying belt (7) is provided with a coil magnetic block or a permanent magnetic block (8), the magnetic block (8) on the magnetic conveying belt (7) is of the same size as the material receiving groove (6) on the material receiving roller (5), the magnetic conveying belt (7) and the material receiving roller (5) are connected by gears, Synchronous relative operation is achieved by synchronous belt, chain or servo control. When in operation, the position of the material storage groove (6) on the material storage roller (5) corresponds to the position of the magnetic block (8) of the magnetic conveyor belt (7). The packaging material I reel (2) is equipped with a non-woven fabric substrate of a warm packing material, which is tangent to the material storage roller (5) through the packaging material I conveying roller (3). The packaging material is attached to the material storage roller (5). The lower hopper (1) is installed on the material storage roller (5). The heat-generating polymer material falls into the material storage groove (6) on the material storage roller through the lower hopper by gravity.

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