Device for cleaning dirt of reciprocating machine hot pressing die in pulp molding operation

Abstract

The utility model discloses a device for cleaning smudginess of a hot pressing die of a reciprocating machine in pulp molding operation, and relates to the technical field of pulp molding, in particular to the device for cleaning smudginess of the hot pressing die of the reciprocating machine in pulp molding operation, which comprises a machine base and a concave die base, a hot-pressing female die is installed below the female die base, a product male die cavity is formed in the middle of the upper portion of the hot-pressing male die, and a product slitter edge groove is formed in the periphery of the product male die cavity. The hot-pressing male die, the hot-pressing female die and the air pipe are arranged in a matched mode, so that the device for cleaning the dirt of the hot-pressing die of the reciprocating machine in the pulp molding operation has the effect of preventing the appearance surface of a product from being polluted, and the hot-pressing male die, the hot-pressing female die, the valve and the air pipe are arranged in a matched mode; the device for cleaning dirt of the reciprocating machine hot pressing die in pulp molding operation has the effects of preheating the die and preserving heat.

Description

Technical Field

[0001] The utility model relates to the technical field of paper pulp molding, in particular to a device for cleaning dirt on a hot pressing mold of a reciprocating machine during paper pulp molding operation. Background Art

[0002] In the existing pulp molding reciprocating machine, since the pulp suction mold screen frame protrudes, when the hot pressing die is to be molded with the pulp suction mold, the hot pressing die must be made to avoid air at the corresponding position, which results in an empty cavity outside the hot pressing die product. Waste pulp and dirt are easily accumulated here during production, making it easy for waste pulp and dirt to fall onto the hot pressing punch during the hot pressing process, resulting in dark spots on the appearance of the product due to the contamination of waste pulp and dirt, resulting in a decrease in product yield. In addition, the existing mold does not have the functions of preheating and heat preservation, resulting in different quality due to different mold temperatures. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies of the prior art, the utility model provides a device for cleaning the dirt of the hot pressing mold of a reciprocating machine during pulp molding operation, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] To achieve the above purpose, the utility model is implemented through the following technical scheme: a device for cleaning the dirty hot pressing mold of a reciprocating machine during pulp molding operation, comprising a machine base and a die base, a hot pressing punch is installed above the machine base, a hot pressing die is installed below the die base, a product punch cavity is arranged in the middle position above the hot pressing punch, a product waste edge groove is arranged around the product punch cavity, an avoidance area is arranged around the product waste edge groove, air holes that penetrate the hot pressing punch are evenly opened in the avoidance area, a connecting groove is opened below the air hole, a valve and an air pipe are installed on the side of the connecting groove, and the hot pressing die includes a pulp suction mold and a screen pressing frame.

[0007] Preferably, there are two die bases and they are fixed at the bottom, a fixed pulp box is installed between the die bases, and the hot pressing die is installed at the top and can not only move up and down to enter the pulp box to obtain pulp but also move left and right to close the mold with the hot pressing punch.

[0008] Preferably, the shape of the avoidance area is the same as that of the screen pressing frame but is larger in size. When the hot pressing punch and the hot pressing die are combined, the larger size forms a thin and flat annular cavity around the screen pressing frame, and compressed air is injected into the thin and flat annular cavity from the air holes.

[0009] Preferably, the connecting groove is connected to all the air holes, and after the machine base is connected to the hot pressing punch, the connecting groove forms a closed annular channel, the valve is connected to the closed annular channel, and the compressed air in the air pipe is poured into the closed annular channel after being adjusted by the valve, and finally poured into the avoidance area from all the air holes.

[0010] Preferably, the periphery of the hot pressing punch and the hot pressing die is provided with corresponding broken edge grooves, which are connected to the avoidance area. The compressed air injected into the avoidance area is discharged to the surroundings from the broken edge grooves, and the waste slurry and dirt in the avoidance area are also discharged to achieve self-cleaning.

[0011] Preferably, the air pipe is connected to the system air pressure, and the system air pressure connection can provide high-temperature compressed air of different pressures to the air pipe, and the valve is an electric control valve that can automatically change the airflow size.

[0012] The utility model provides a device for cleaning the dirt on the hot pressing mold of a reciprocating machine during pulp molding operation, which has the following beneficial effects:

[0013] 1. The device for cleaning the dirt of the hot pressing mold of the reciprocating machine during pulp molding operation has the effect of preventing the appearance of the product from being contaminated through the coordinated arrangement of the hot pressing punch, the hot pressing die and the air pipe. When the hot pressing punch and the hot pressing die are molded together, a circle of thin and flat annular cavity is formed around the product through the escape area with enlarged size, and then compressed air is introduced into the thin and flat annular cavity through the air pipe. The compressed air is used to blow away the stains around the product before the mold is opened, thereby preventing the stains from falling on the product and achieving the effect of preventing the appearance of the product from being contaminated.

[0014] 2. The device for cleaning the dirty hot pressing mold of the reciprocating machine during pulp molding operation has the effect of preheating and keeping the mold warm through the coordinated arrangement of the hot pressing punch, the hot pressing die, the valve and the air pipe. A channel through which air can flow in a large range is formed inside the hot pressing punch through the connecting groove on the bottom surface and the air holes on the periphery. When the hot pressing punch and the hot pressing die are closed, the avoidance area is an annular channel on the parting surface. When the temperature of the compressed air injected into these channels by the air pipe is high enough and the flow rate is relatively small through the adjustment of the valve, the injected high-temperature air can preheat the mold. When the hot pressing punch and the hot pressing die are in the open mold state and the flow rate of the injected compressed air is fast enough through the adjustment of the valve, the air flow sprayed upward from the air holes forms a wind curtain, which can prevent the temperature of the mold from being transmitted to the outside world and thus achieve the effect of keeping warm. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the overall three-dimensional view of the utility model;

[0016] Figure 2 It is a structural schematic diagram of a three-dimensional view of the first hot pressing convex mold of the utility model;

[0017] Figure 3 It is a structural schematic diagram of a three-dimensional view of the second hot pressing convex mold of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the hot pressing concave die of the utility model;

[0019] Figure 5 This is a structural schematic diagram of the front view of the mold installation of the utility model.

[0020] In the figure: 1. Machine base; 2. Die base; 3. Hot pressing punch; 301. Product punch cavity; 302. Product waste edge groove; 303. Avoidance area; 304. Air hole; 305. Connecting groove; 4. Hot pressing die; 401. Slurry suction mold; 402. Screen pressing frame; 5. Valve; 6. Air pipe; 7. Slurry box. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figures 1 to 5The utility model provides a technical solution: a device for cleaning the dirty hot pressing mold of a reciprocating machine during pulp molding operation, comprising a machine base 1 and a die base 2, a hot pressing convex mold 3 is installed above the machine base 1, a hot pressing concave mold 4 is installed below the die base 2, the number of the concave mold bases 2 is two and they are fixed at the bottom, a fixed pulp box 7 is installed between the concave mold bases 2, the hot pressing concave mold 4 is installed at the top and can not only move up and down to enter the pulp box 7 to obtain pulp, but also move left and right to close the mold with the hot pressing convex mold 3 A product punch cavity 301 is arranged in the middle position above the hot pressing punch 3, a product waste edge groove 302 is arranged around the product punch cavity 301, an avoidance area 303 is arranged around the product waste edge groove 302, and air holes 304 penetrating the hot pressing punch 3 are evenly opened in the avoidance area 303, a connecting groove 305 is opened below the air hole 304, a valve 5 and an air pipe 6 are installed on the side of the connecting groove 305, and the air pipe 6 is connected to the system air pressure, and the system air pressure connection can provide high-temperature compressed air of different pressures to the air pipe 6. The valve 5 is an electric control valve that can automatically change the size of the air flow. The hot pressing die 4 includes a slurry suction die 401 and a screen pressing frame 402. The shape of the avoidance area 303 is the same as that of the screen pressing frame 402, but the size is larger. When the hot pressing convex die 3 and the hot pressing concave die 4 are molded together, a circle of thin and flat annular cavity is formed around the screen pressing frame 402. Compressed air is poured into the thin and flat annular cavity from the air holes 304. The connecting groove 305 is connected to all the air holes 304. After the machine base 1 is connected to the hot pressing convex die 3, the connecting groove 305 forms a closed The valve 5 is connected with the closed annular channel, and the compressed air in the air pipe 6 is poured into the closed annular channel after being adjusted by the valve 5, and finally poured into the avoidance area 303 from all the air holes 304. The periphery of the hot pressing punch 3 and the hot pressing die 4 is provided with broken edge grooves corresponding to each other, and the broken edge grooves are connected with the avoidance area 303. The compressed air poured into the avoidance area 303 is discharged to the surroundings from the broken edge grooves, and at the same time, the waste slurry and dirt in the avoidance area 303 are also discharged to the outside to achieve self-cleaning.

[0023] When in use, the avoidance area 303 can be enlarged on the original hot pressing punch 3 and then the air hole 304 can be made by turning the hole downward, and then the connecting groove 305 connecting all the air holes 304 can be processed on the back of the hot pressing punch 3, and then the machine base 1 and the hot pressing punch 3 are fixedly connected in the same way, but the difference is that the connecting gap needs to be sealed, and then the valve 5 connecting the connecting groove 305 is installed on the side of the connecting gap between the hot pressing punch 3 and the machine base 1. The specific connection method of the valve 5 can be punching, welding or other methods, and then the valve 5 is connected to the air pipe 6 connected to the system air pressure, wherein the system air pressure can provide high-temperature compressed air with different pressures to the air pipe 6, and the valve 5 is an electrically controlled valve that can automatically change the airflow. Small, after the original mold is modified, all the steps of mold closing and mold opening do not need to be changed, and thus will not affect the production efficiency. It is only necessary to control the timing and size of the compressed air injected into the hot pressing punch 3 during the mold opening and closing process. As for the temperature of the compressed air, it is the temperature of the mold when it is working normally. This temperature is greater than the ambient temperature, and thus compressed air can be introduced in advance before formal production to heat the mold to achieve mold preheating. A few seconds before mold opening, the compressed air flow rate is increased to blow away the stains around the product before mold opening, thereby preventing stains from falling on the product and preventing the product's appearance from being contaminated. After the mold is opened, the airflow ejected from the air hole 304 will also form a wind curtain around the product, which can prevent the mold temperature from being transmitted to the outside world and thus achieve heat preservation.

[0024] In summary, the device for cleaning the dirt of the hot pressing mold of the reciprocating machine during pulp molding operation forms a circle of thin and flat annular cavity around the product through the enlarged avoidance area 303 when the hot pressing convex mold 3 and the hot pressing concave mold 4 are molded, and then compressed air is introduced into the thin and flat annular cavity through the air pipe 6, and the dirt around the product is blown away by the compressed air before the mold is opened, thereby preventing the dirt from falling on the product and achieving the effect of preventing the appearance of the product from being contaminated. The connecting groove 305 opened on the bottom surface of the hot pressing convex mold 3 and the air holes 304 opened on the periphery make it A channel through which air can flow over a wide range is formed inside. When the hot pressing punch 3 and the hot pressing die 4 are closed, the avoidance area 303 is an annular channel on the parting surface. When the temperature of the compressed air injected into these channels by the air pipe 6 is high enough and the flow rate is adjusted to a relatively small level through the valve 5, the injected high-temperature air can preheat the mold. When the hot pressing punch 3 and the hot pressing die 4 are in an open mold state and the flow rate of the injected compressed air adjusted by the valve 5 is fast enough, the airflow sprayed upward from the air hole 304 forms a wind curtain, which can prevent the mold temperature from being transmitted to the outside world and thus achieve the effect of heat preservation.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for cleaning the dirty hot pressing mold of a reciprocating machine during pulp molding operation, comprising a machine base (1) and a die base (2), characterized in that: A hot pressing punch (3) is installed above the machine base (1), a hot pressing die (4) is installed below the die base (2), a product punch cavity (301) is arranged in the middle position above the hot pressing punch (3), a product waste edge groove (302) is arranged around the product punch cavity (301), an escape area (303) is arranged around the product waste edge groove (302), the escape area (303) is evenly provided with air holes (304) penetrating the hot pressing punch (3), a connecting groove (305) is arranged below the air hole (304), a valve (5) and an air pipe (6) are installed on the side of the connecting groove (305), and the hot pressing die (4) comprises a slurry suction mold (401) and a screen pressing frame (402).

2. The device for cleaning the dirty hot pressing mold of a reciprocating machine during pulp molding operation according to claim 1, characterized in that: There are two concave die bases (2) which are fixedly arranged at the bottom, a fixed pulp box (7) is installed between the concave die bases (2), and a hot pressing concave die (4) is installed at the top and can not only move up and down to enter the pulp box (7) to obtain pulp, but also move left and right to close the mold with the hot pressing convex die (3).

3. The device for cleaning the dirty hot pressing mold of a reciprocating machine during pulp molding operation according to claim 1, characterized in that: The shape of the avoidance area (303) is the same as that of the screen pressing frame (402) but is larger in size. When the hot pressing punch (3) and the hot pressing die (4) are combined, the larger size forms a thin and flat annular cavity around the screen pressing frame (402), and compressed air is injected into the thin and flat annular cavity from the air hole (304).

4. The device for cleaning the dirty hot pressing mold of a reciprocating machine during pulp molding operation according to claim 1, characterized in that: The connecting groove (305) is connected to all the air holes (304). After the machine base (1) is connected to the hot pressing punch (3), the connecting groove (305) forms a closed annular channel. The valve (5) is connected to the closed annular channel. The compressed air in the air pipe (6) is adjusted by the valve (5) and then poured into the closed annular channel. Finally, it is poured into the avoidance area (303) from all the air holes (304).

5. The device for cleaning the dirty hot pressing mold of a reciprocating machine during pulp molding operation according to claim 1, characterized in that: The periphery of the hot pressing convex mold (3) and the hot pressing concave mold (4) is provided with broken edge notches corresponding to each other, the broken edge notches are connected to the avoidance area (303), and the compressed air injected into the avoidance area (303) is discharged to the surrounding areas through the broken edge notches, and at the same time, the waste slurry and dirt in the avoidance area (303) are also discharged to the outside to achieve self-cleaning.

6. The device for cleaning the dirty hot pressing mold of a reciprocating machine during pulp molding operation according to claim 1, characterized in that: The air pipe (6) is connected to the system air pressure, and the system air pressure connection can provide the air pipe (6) with high-temperature compressed air of different pressures. The valve (5) is an electric control valve that can automatically change the size of the air flow.

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