Integral structural type drum

Abstract

The present invention discloses an integrally structured drum, which comprises a drum body. The drum body includes end plates and side plates. Among them, air inlet pipes are distributed on the end plate on one side of the drum body, and the air inlet pipes face the inner side of the drum body. An air chamber is arranged at the connection position between the side plates, the air chamber faces the inner side of the drum body, and the air chamber is formed by bending sheet metal. The end plates, the side plates, the air chamber and the air inlet pipes are connected together by welding. Through the improved drum structure and the design of integral welding combination, the structural strength of the drum is improved, and the welding and assembly are easier, which is beneficial to improving the manufacturing and assembly efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of pulp molding, and particularly to an integral structural type rotary drum. Background Art

[0002] The rotary drum type forming machine for pulp molding utilizes the intermittent rotation of a polyhedron rotary drum, and the mold sequentially passes through several processes such as slurry suction forming, dehydration, and product transfer. Currently, the rotary drums include tetrahedrons (forming surfaces), octahedrons, dodecahedrons, etc. Mainly, each part is pre-processed and then assembled from the separately processed parts. The assembled rotary drum has the following defects: 1. It is necessary to separately process the parts and then assemble them. There are cumulative errors from the processing to the assembly, and the accuracy of the polyhedron cannot be guaranteed, which will cause inaccurate mold closing during product transfer; 2. For the assembled rotary drum, the connection method used is mostly bolt connection. This results in relatively low overall rigidity of the rotary drum. When the forming machine is running, the rotary drum itself intermittently rotates and stops. Due to its own inertia, it is prone to overall deformation, so the rotational speed of the rotary drum cannot be too fast, which restricts the improvement of production capacity; 3. The air blowing and suction pipelines included in the rotary drum cannot be pre-fabricated. It is often necessary to carry out welding during the assembly process of the forming machine, and welding needs to be carried out inside the rotary drum. This makes the welding difficult and cannot guarantee the welding quality; 4. There are many pipeline bends and merges in the rotary drum, resulting in a decrease in suction efficiency, waste of vacuum, and it is easy to cause poor drainage, affecting the forming quality. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides an integral structural type rotary drum.

[0004] The technical solution adopted by the present invention to solve its technical problems is:

[0005] An integral structural type rotary drum includes a rotary drum body. The rotary drum body includes end plates and side plates. The side plates are used as forming surfaces for installing mold frames. Mold installation holes are opened on the side plates to install forming molds. The end plates are connected to the rotating shaft of the rotary drum body; among them, air inlet pipes are distributed on one of the end plates of the rotary drum body, and the air inlet pipes face the inner side of the rotary drum body; an air chamber is arranged at the connection position between the side plates, the air chamber faces the inner side of the rotary drum body, and the air chamber is formed by bending sheet metal; the air chamber is communicated with the air inlet pipes, and ventilation holes are opened on the side plates at positions corresponding to the air chamber; the end plates, the side plates, the air chamber, and the air inlet pipes are connected together by welding.

[0006] As some embodiments of the present invention, air chamber strengthening rods are arranged in the air chamber.

[0007] As some embodiments of the present invention, side plate strengthening ribs are arranged at positions between the mold installation holes on the side plates facing the inner side of the rotary drum body.

[0008] In some embodiments of the present invention, a rotating shaft collar is provided on the end plate, and a rotating shaft position reinforcing rib is provided between the rotating shaft collar and the end plate.

[0009] In some embodiments of the present invention, an outer air chamber sealing plate is provided at the outer end of the air chamber, an outer sealing plate support plate is provided between the outer air chamber sealing plate and the drum body, and an outer sealing plate auxiliary welding hole is provided on the outer sealing plate support plate.

[0010] In some embodiments of the present invention, an inner air chamber sealing plate is provided at the inner end of the air chamber, and an inner sealing plate auxiliary welding hole is provided on the air chamber.

[0011] The beneficial effects of the present invention are as follows: Through the improved drum structure combined with the overall welding combination design, the structural strength of the drum is improved, and the welding and assembly are easier, which is conducive to improving the manufacturing and assembly efficiency. Description of the Drawings

[0012] The present invention will be further described below in conjunction with the drawings and embodiments.

[0013] Figure 1 is a working schematic diagram of the present invention;

[0014] Figure 2 is a three-dimensional view of the present invention;

[0015] Figure 3 is a cross-sectional view of the present invention. Detailed Embodiments

[0016] In order to make the purpose, technical solutions and advantages of the present application clearer, the present invention will be further described in detail below in conjunction with the drawings and embodiments. For a thorough understanding of the present invention, some specific details will be involved in the following description. Without these specific details, the present invention can still be realized, that is, those skilled in the art can use these descriptions and statements here to more effectively introduce the essence of their work to other technicians in the same field.

[0017] Referring to Figure 1 、 Figure 2 , an integral structural drum includes a drum body 100, the drum body 100 includes an end plate 200 and a side plate 300, the side plate 300 is used as a forming surface for installing a mold frame 410, a mold installation hole 310 is provided on the side plate 300 for installing a forming mold 400, and the end plate 200 is connected to a rotating shaft 500 of the drum body 100.

[0018] Referring to Figure 3, where an air inlet pipe 600 is distributed on the end plate 200 on one side of the drum body 100, and the air inlet pipe 600 faces the inner side of the drum body 100.

[0019] An air chamber 700 is arranged at the connection position between the side plates 300. The air chamber 700 faces the inner side of the drum body 100. The air chamber 700 is formed by bending sheet metal, which reduces the loss of pipeline merging and turning and is also convenient for the welding operation between the air chamber 700 and the side plates 300.

[0020] The air chamber 700 is communicated with the air inlet pipe 600, and ventilation holes 320 are opened on the side plates 300 at the positions corresponding to the air chamber 700. The air chamber 700 and the air inlet pipe 600 form a complete air inlet channel. In this way, the air chamber 700 and the air inlet pipe 600 can be welded together, which is convenient for the welding connection of the entire air inlet pipeline.

[0021] The end plate 200, the side plates 300, the air chamber 700, and the air inlet pipe 600 are connected together by welding to form an integral welded structure. Specifically, the various parts of the drum are welded together in sequence. According to the process requirements, machining allowances are reserved in advance for each machining plane and hole. After welding is completed, each working plane and inner hole are machined integrally in sequence; the greatest advantage of integral welding is to control the machining error in one machining process.

[0022] This integral welding forming method ensures the accuracy of each surface of the drum body 100 as a polyhedron, can ensure the mold clamping accuracy when transferring products, and improve the product qualification rate. Moreover, this drum has good rigidity and can reduce the inertial deformation during intermittent rotation. It can meet the requirements of the forming machine for speed increase and is beneficial to improving the production capacity of pulp production.

[0023] An air chamber reinforcing rod 710 is arranged in the air chamber 700. Side plate reinforcing ribs 330 are arranged at the positions between the mold mounting holes 310 on the inner side of the side plates 300 facing the drum body 100. A rotating shaft sleeve 210 is arranged on the end plate 200, and a rotating shaft position reinforcing rib 211 is arranged between the rotating shaft sleeve 210 and the end plate 200.

[0024] An air chamber outer sealing plate 720 is arranged at the outer end of the air chamber 700. An outer sealing plate support plate 730 is arranged between the air chamber outer sealing plate 720 and the drum body 100, which plays a role in strengthening the supporting force of the outer sealing plate support plate 730 and even the entire air chamber 700. An outer sealing plate auxiliary welding hole 731 is opened on the outer sealing plate support plate 730, which is convenient for the welding torch to pass through the outer sealing plate auxiliary welding hole 731 for welding the welds between the air chamber outer sealing plate 720, the outer sealing plate support plate 730, and the inner wall of the drum body 100, further facilitating the welding work of the drum.

[0025] An inner end plate 740 of the air chamber 700 is provided inside the air chamber 700. An auxiliary welding hole 750 for the inner end plate is formed in the air chamber 700, facilitating a welding torch to pass through the auxiliary welding hole 750 for welding the weld seam of the inner end plate 740 of the air chamber 700, and further facilitating the welding work of the rotary drum. Since an air cavity for gas circulation is formed by the air chamber 700 and the end plate inside the air chamber 700, in order to ensure that the auxiliary welding hole 750 for the inner end plate does not affect the ventilation of the air chamber 700, the auxiliary welding hole 750 for the inner end plate is located at a position on the outer side of the air chamber 700 relative to the inner end plate of the air chamber.

[0026] During specific operation, forming molds 400 can be installed on several forming surfaces (four-sided, eight-sided, twelve-sided, etc.) of the rotary drum, and each surface is provided with a ventilation hole and an air chamber. When the rotary drum rotates intermittently, the forming molds 400 installed on the surface of the rotary drum can sequentially enter working positions such as slurry suction, dehydration, product washing, hot air preheating, product transfer, and forming mold 400 cleaning. At these several working stations, each forming mold 400 has a different gas path, and the process of vacuum pumping or blowing during mold transfer is realized through a gas distribution chamber. For details, reference can be made to the existing similar rotary drum structures.

[0027] According to the above principle, the present invention can also make appropriate changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention.

[0028] Proven by practice, the new technology has the following advantages compared with the existing technology:

[0029] 1. The form of integral welding and then integral machining ensures the accuracy of each surface of the polyhedron, can ensure the accuracy of mold closing when transferring products, and improves the product qualification rate.

[0030] 2. The overall rotary drum has good rigidity and can reduce inertial deformation during intermittent rotation. It can meet the requirements of the forming machine for speed increase, thereby improving production capacity.

[0031] 3. The pipelines are welded together during the welding process of the rotary drum and do not need to be welded during the assembly process. While improving the pipeline quality, the workload of assembly workers is reduced.

[0032] 4. The pipelines are replaced by air chambers formed by bending sheet metal, reducing the loss of pipeline merging and turning. The air suction efficiency is improved, energy is saved, and the drainage efficiency is improved, ensuring the forming quality.

Claims

1. An integral structural drum, characterized in that: It includes a drum body (100), and the drum body (100) includes end plates (200) and side plates (300). The side plates (300) serve as forming surfaces for installing the die frame (410). Die mounting holes (310) are provided on the side plates (300) for installing the forming die (400). The end plates (200) are connected to the rotating shaft (500) of the drum body (100); Among them, air inlet pipes (600) are distributed on the end plate (200) on one side of the drum body (100), and the air inlet pipes (600) face the inner side of the drum body (100); An air chamber (700) is provided at the connection position between the side plates (300). The air chamber (700) faces the inner side of the drum body (100), and the air chamber (700) is formed by bending sheet metal; The air chamber (700) is communicated with the air inlet pipes (600), and ventilation holes (320) are provided on the side plates (300) corresponding to the position of the air chamber (700); The end plates (200), the side plates (300), the air chamber (700), and the air inlet pipes (600) are connected together by welding; An outer air chamber sealing plate (720) is provided at the outer end of the air chamber (700). An outer sealing plate support plate (730) is provided between the outer air chamber sealing plate (720) and the drum body (100). Outer sealing plate auxiliary welding holes (731) are provided on the outer sealing plate support plate (730), and a welding torch can pass through the outer sealing plate auxiliary welding holes (731) for welding the welds between the outer air chamber sealing plate (720) of the air chamber (700), the outer sealing plate support plate (730), and the inner wall of the drum body (100); An inner air chamber sealing plate (740) is provided at the inner end of the air chamber (700), and inner sealing plate auxiliary welding holes (750) are provided on the air chamber (700); Air chamber reinforcing bars (710) are provided inside the air chamber (700).

2. The integral structural drum according to claim 1, characterized in that: Side plate reinforcing ribs (330) are provided at the position between the die mounting holes (310) on the inner side of the side plates (300) facing the drum body (100).

3. The integral structural drum according to claim 1, characterized in that: A rotating shaft collar (210) is provided on the end plate (200), and a rotating shaft position reinforcing rib (211) is provided between the rotating shaft collar (210) and the end plate (200).

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