Pulp molding equipment

Abstract

The invention provides paper pulp molding equipment, which comprises a mold assembly, a vacuum pump assembly and a vacuum pump assembly, a communication structure; and a deposited carbon collection structure. According to the paper pulp molding equipment provided by the invention, the communicating structure and the deposited carbon collecting structure are arranged at the vacuumizing opening of the mold assembly, so that deposited carbon generated in the drying process of the mold assembly can be sucked into the communicating structure under the vacuumizing action of the vacuumizing structure; the carbon deposits enter the carbon deposit collecting structure under the action of self weight and viscosity, so that the aim of removing the carbon deposits in the mold assembly is achieved, and the problem that the appearance and production continuity of paper pulp molded products are affected due to the existence of the carbon deposits in the prior art is effectively avoided; and the production quality and the production efficiency of paper pulp molded products are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of pulp molding, in particular to a pulp molding device. Background Art

[0002] The rapid development of the petroleum industry has promoted the production of plastic products. Although the emergence of disposable plastic tableware meets people's fast-paced convenience requirements for eating, the discarded plastic "white garbage" tableware has caused serious environmental pollution. It is an inevitable development trend that plastic tableware is gradually replaced by environmentally friendly tableware.

[0003] Pulp molding is a three-dimensional papermaking technology that uses pulp as raw material. It is generally obtained after pulp preparation, molding, drying, and shaping. It has the advantages of being biodegradable, recyclable, and green and environmentally friendly. In the production of pulp molding, its raw material is generally a pulp fiber suspension with a concentration of less than 1%, and the finished pulp molding shipped generally needs to have a dryness of more than 90%; in the production of pulp molding, about 3-5kg of water is removed from each kilogram of pulp molding product through hot pressing and drying.

[0004] However, the water removed by drying contains not only fine fibers, but also some additives such as oil and water repellent, which results in a large amount of carbon deposits in the pulp molded products during the drying process. The presence of carbon deposits not only causes some pollution such as black spots on the products without affecting the appearance of the products, resulting in product failures in inspection, but also easily blocks the product air chamber, resulting in problems in product transfer, affecting the production continuity of pulp molded products. Summary of the invention

[0005] In order to solve the technical problem in the prior art that carbon deposits affect the appearance and transfer of products, a pulp molding device is provided which utilizes a connecting structure and a carbon deposit collection structure to remove carbon deposits to improve the production continuity of pulp molded products.

[0006] A pulp molding device, comprising:

[0007] A mold assembly, wherein a vacuum port is provided on the mold assembly;

[0008] A communication structure, the communication structure is located below the mold assembly, the communication structure has a first communication port, a second communication port and a third communication port that are connected to each other, the first communication port is connected to the vacuum port, and the second communication port is connected to the vacuum structure;

[0009] A carbon deposit collecting structure is located below the connecting structure, and the carbon deposit collecting structure is connected to the third connecting port.

[0010] Along the direction from the mold assembly to the carbon deposit collection structure, the first communication port, the second communication port and the third communication port are arranged in sequence.

[0011] The communication structure includes a communication pipe, the upper end of the communication pipe forms the first communication port, the lower end of the communication pipe forms the third communication port, and the side wall of the communication pipe is provided with the second communication port.

[0012] The projection of the first communication port at the lower end of the communication pipe is within the third communication port or overlaps with the third communication port.

[0013] An anti-stick coating or an anti-stick material layer is provided on the communication path from the vacuum port to the carbon deposit collection structure.

[0014] The mold assembly comprises:

[0015] Upper mold structure;

[0016] A lower mold structure, wherein the lower mold structure is located below the upper mold structure, and the upper mold structure and the lower mold structure jointly surround a molding cavity;

[0017] A filter structure, wherein the filter structure is disposed on the lower mold structure, and the filter structure separates the mold cavity into a molding cavity and a drainage cavity, and the molding cavity and the drainage cavity are connected through the filter structure;

[0018] The vacuum port is arranged on the lower mold structure, and the vacuum port is communicated with the drainage cavity.

[0019] An anti-stick coating or an anti-stick material layer is arranged in the drainage cavity.

[0020] The material of the anti-stick coating is polytetrafluoroethylene;

[0021] Alternatively, the anti-sticking material layer is made of polytetrafluoroethylene.

[0022] The carbon deposit collecting structure is detachably connected to the communicating structure.

[0023] The pulp molding equipment further comprises a machine platform, the mold assembly is arranged on the machine platform, and the connecting structure and the carbon deposit collecting structure are located below the machine platform.

[0024] The pulp molding equipment provided by the present invention, by arranging a connecting structure and a carbon deposit collecting structure at the vacuum port of the mold assembly, can, under the vacuum action of the vacuum structure, suck the carbon deposits generated by the mold assembly during the drying process into the connecting structure, and make the carbon deposits enter the carbon deposit collecting structure under the action of their own weight and viscosity, thereby achieving the purpose of removing the carbon deposits in the mold assembly, effectively avoiding the problem in the prior art that the appearance of the pulp molded product and the production continuity are affected by the presence of carbon deposits, and ensuring the production quality and production efficiency of the pulp molded products. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a pulp molding device provided by an embodiment of the present invention;

[0026] Figure 2 A cross-sectional view of a pulp molding device provided by an embodiment of the present invention;

[0027] In the figure:

[0028] 1. Mold assembly; 11. Vacuum port; 2. Connecting structure; 21. First connecting port; 22. Second connecting port; 23. Third connecting port; 3. Carbon deposit collection structure; 12. Upper mold structure; 13. Lower mold structure; 14. Molding cavity; 15. Drainage cavity; 4. Machine. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described 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, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Pulp molding is a three-dimensional papermaking technology. It uses pulp as raw material. It is generally obtained after pulp preparation, molding, drying, and shaping. It has the advantages of being degradable, recyclable, and green and environmentally friendly. In the production of pulp molding, the raw material is generally a pulp fiber suspension with a concentration of less than 1%, and the finished pulp molding shipped generally needs to have a dryness of more than 90%; in the production of pulp molding, about 3-5 kg ​​of water is removed by hot pressing and drying for each kilogram of pulp molding product. However, the water removed by drying not only contains fine fibers, but also contains some additives such as oil and water repellent, which causes a large amount of carbon deposits to be generated during the drying process of pulp molded products. The presence of carbon deposits will not only bring some pollution such as black spots to the product without affecting the appearance of the product, resulting in product inspection failure, but also easily cause the product air chamber to be blocked, resulting in problems with product transfer, affecting the production continuity of pulp molded products.

[0035] To this end, the present application provides a Figure 1 and Figure 2The pulp molding equipment shown includes: a mold assembly 1, on which a vacuum port 11 is provided; a connecting structure 2, which is located below the mold assembly 1, and has a first connecting port 21, a second connecting port 22 and a third connecting port 23 that are interconnected, the first connecting port 21 is connected to the vacuum port 11, and the second connecting port 22 is connected to the vacuum structure; a carbon deposit collection structure 3, which is located below the connecting structure 2 and is connected to the third connecting port 23. By arranging the connecting structure 2 and the carbon deposit collecting structure 3 at the vacuum port 11 of the mold assembly 1, the carbon deposits generated during the drying process of the mold assembly 1 can be sucked into the connecting structure 2 under the vacuum effect of the vacuum structure, and the carbon deposits can enter the carbon deposit collecting structure 3 under the effect of their own weight and viscosity, thereby achieving the purpose of removing the carbon deposits in the mold assembly 1, effectively avoiding the problem in the prior art that the appearance of the pulp molded product and the production continuity are affected by the existence of carbon deposits, and ensuring the production quality and production efficiency of the pulp molded product. Figure 2 As shown in the figure, the line segment where the arrow is located is the moving path of the carbon deposits.

[0036] When in use, the vacuum structure is connected to the second connecting port 22, so that the vacuum structure can perform a vacuum operation into the mold assembly 1 through the second connecting port 22 and the first connecting port 21. At this time, the moisture in the wet embryo in the mold assembly 1 will flow into the connecting structure 2 through the first connecting port 21. Since the water filtered out by vacuum contains fine fibers, oil-proof and waterproof substances or sugar substances, the water viscosity here is relatively high, so that the formed carbon deposits will form a larger volume due to the viscosity. At this time, the vacuum capacity at the second connecting port 22 can only increase the ability of carbon deposits to enter the connecting structure 2, and cannot extract the carbon deposits from the second connecting port 22. The carbon deposits will continue to move downward under the action of their own weight and enter the carbon deposit collection structure 3 to be collected, thereby realizing the cleaning of carbon deposits in the mold assembly 1, avoiding the problem of affecting the appearance and production continuity of pulp molded products due to the presence of carbon deposits in the prior art, and ensuring the production quality and production efficiency of pulp molded products.

[0037] Along the direction from the mold assembly 1 to the carbon deposit collection structure 3, the first connecting port 21, the second connecting port 22 and the third connecting port 23 are arranged in sequence, that is, the second connecting port 22 is arranged below the first connecting port 21 to ensure that the vacuum structure can be reliably vacuumed from the bottom of the mold assembly 1, thereby facilitating the discharge of water, carbon deposits, etc. in the mold assembly 1, and the second connecting port 22 is arranged above the third connecting port 23, which can prevent the carbon deposits in the carbon deposit collection structure 3 from entering the vacuum structure and damaging the vacuum structure and causing air chamber blockage, thereby ensuring the production quality and production efficiency of pulp molded products.

[0038] As an embodiment, the communication structure 2 includes a communication pipe, the upper end of the communication pipe forms the first communication port 21, the lower end of the communication pipe forms the third communication port 23, and the side wall of the communication pipe is provided with the second communication port 22. The use of the communication pipe structure is convenient for the falling of carbon deposits and the connection between the vacuum structure and the mold assembly 1, and the structure is simple, reducing the production cost.

[0039] The projection of the first connecting port 21 at the lower end of the connecting pipe is within the third connecting port 23 or overlaps with the third connecting port 23, that is, the carbon deposits entering the connecting pipe from the first connecting port 21 can directly fall downward to the third connecting port 23, thereby minimizing the accumulation of carbon deposits in the connecting structure 2 and ensuring the cleaning effect of the carbon deposits and the reliability of the vacuum structure.

[0040] An anti-stick coating or anti-stick material layer is provided on the communication path from the vacuum port 11 to the carbon deposit collection structure 3. The anti-stick coating or anti-stick material layer is used to further prevent the carbon deposits from sticking to the communication structure 2 during the falling process, thereby ensuring the effect of collecting and cleaning the carbon deposits.

[0041] The mold assembly 1 includes: an upper mold structure 12; a lower mold structure 13, wherein the lower mold structure 13 is located below the upper mold structure 12, and the upper mold structure 12 and the lower mold structure 13 jointly surround a molding cavity; a filter structure (not shown in the figure), wherein the filter structure is arranged on the lower mold structure 13, and the filter structure separates the molding cavity into a molding cavity 14 and a drainage cavity 15, and the molding cavity 14 and the drainage cavity 15 are connected through the filter structure; the vacuum port 11 is arranged on the lower mold structure 13, and the vacuum port 11 is connected to the drainage cavity 15.

[0042] When pulp molding is performed, the wet embryo is placed into the mold assembly 1, and then the upper mold structure 12 and the lower mold structure 13 are molded together to extrude and heat-extract the wet embryo. During this process, the moisture in the wet embryo can flow into the drainage chamber 15 through the filter structure, and the fine fibers, oil-proof and waterproof substances or sugar substances carried in the moisture can also pass through the filter structure and enter the drainage chamber 15. As the wet embryo dries, carbon deposits will form in the drainage chamber 15. At this time, the vacuuming effect of the vacuuming structure can move the carbon deposits to the connecting structure 2, and finally be collected by the carbon deposit collecting structure 3, thereby achieving the cleaning of the carbon deposits in the mold assembly 1, avoiding the problem in the prior art that the appearance of the pulp molded product and the production continuity are affected by the presence of carbon deposits, and ensuring the production quality and production efficiency of the pulp molded products.

[0043] Preferably, the cross-section of the drainage chamber 15 is an inverted trapezoid, and the vacuum port 11 is located at the center of the bottom surface of the inverted trapezoid. The hypotenuse of the inverted trapezoid is used to drain the water entering the drainage chamber 15, ensuring that the substances carried therein can flow toward the vacuum port 11, thereby effectively discharging the carbon deposits.

[0044] The drainage cavity 15 is provided with an anti-stick coating or an anti-stick material layer, which is used to further prevent carbon deposits from adhering to the inner wall of the drainage cavity 15, thereby ensuring the cleaning effect of carbon deposits.

[0045] Preferably, the material of the anti-stick coating is polytetrafluoroethylene, and the anti-stick coating composed of polytetrafluoroethylene is formed by coating, thereby making full use of the characteristics of polytetrafluoroethylene's resistance to acids and alkalis, resistance to various organic solvents, and being almost insoluble in all solvents, as well as its high temperature resistance and extremely low friction coefficient, thereby avoiding the sticking of carbon deposits and improving the cleaning effect of carbon deposits.

[0046] The anti-sticking material layer is made of polytetrafluoroethylene, that is, a material layer formed of polytetrafluoroethylene is additionally arranged on the connecting path from the vacuum port 11 to the carbon deposit collection structure 3 and on the inner wall of the drainage cavity 15, which can also avoid the sticking of carbon deposits and improve the cleaning effect of carbon deposits.

[0047] Since the carbon deposits will eventually be collected in the carbon deposit collection structure 3, the carbon deposit collection structure 3 and the connecting structure 2 are detachably connected, and the carbon deposit collection structure 3 can be directly removed and cleaned, further improving the efficiency of cleaning the carbon deposits.

[0048] The pulp molding equipment also includes a machine table 4, the mold assembly 1 is arranged on the machine table 4, the connecting structure 2 and the carbon deposit collection structure 3 are located below the machine table 4, and the connecting structure 2 and the carbon deposit collection structure 3 are arranged below the machine table 4. The carbon deposits can fall into the carbon deposit collection structure 3 under the action of their own weight and vacuum, thereby ensuring the cleaning effect of the carbon deposits. At the same time, it is also convenient for operators to perform the pulp molding process above the machine table 4, while avoiding interference of the connecting structure 2 and the carbon deposit collection structure 3 with the operation, thereby ensuring the production efficiency of pulp molding.

[0049] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A pulp molding device, characterized in that: include: A mold assembly (1), wherein the mold assembly (1) is provided with a vacuum port (11); a communication structure (2), the communication structure (2) being located below the mold assembly (1), the communication structure (2) comprising a first communication port (21), a second communication port (22) and a third communication port (23) which are connected to each other, the first communication port (21) being connected to the vacuum port (11), and the second communication port (22) being connected to the vacuum structure; A carbon deposit collection structure (3), wherein the carbon deposit collection structure (3) is located below the connecting structure (2), and the carbon deposit collection structure (3) is connected to the third connecting port (23).

2. The pulp molding equipment according to claim 1, characterized in that: Along the direction from the mold assembly (1) to the carbon deposit collection structure (3), the first communication port (21), the second communication port (22) and the third communication port (23) are arranged in sequence.

3. The pulp molding equipment according to claim 2, characterized in that: The communication structure (2) comprises a communication pipe, the upper end of the communication pipe forms the first communication port (21), the lower end of the communication pipe forms the third communication port (23), and the side wall of the communication pipe is provided with the second communication port (22).

4. The pulp molding equipment according to claim 3, characterized in that: The projection of the first communication port (21) at the lower end of the communication pipe is within the third communication port (23) or coincides with the third communication port (23).

5. The pulp molding equipment according to claim 1, characterized in that: An anti-sticking coating or an anti-sticking material layer is provided on the communication path from the vacuum port (11) to the carbon deposit collection structure (3).

6. The pulp molding equipment according to claim 1, characterized in that: The mold assembly (1) comprises: Upper mold structure (12); A lower mold structure (13), wherein the lower mold structure (13) is located below the upper mold structure (12), and the upper mold structure (12) and the lower mold structure (13) jointly enclose a molding cavity; a filter structure, the filter structure being arranged on the lower mold structure (13), and the filter structure dividing the mold cavity into a molding cavity (14) and a drainage cavity (15), the molding cavity (14) and the drainage cavity (15) being connected via the filter structure; The vacuum port (11) is arranged on the lower mold structure (13), and the vacuum port (11) is communicated with the drainage cavity (15).

7. The pulp molding equipment according to claim 6, characterized in that: An anti-stick coating or an anti-stick material layer is provided in the drainage cavity (15).

8. The pulp molding equipment according to claim 5 or 7, characterized in that: The material of the anti-stick coating is polytetrafluoroethylene; Alternatively, the anti-sticking material layer is made of polytetrafluoroethylene.

9. The pulp molding equipment according to claim 1, characterized in that: The carbon deposit collection structure (3) and the connecting structure (2) are detachably connected.

10. The pulp molding equipment according to claim 1, characterized in that: The pulp molding equipment further comprises a machine platform (4), the mold assembly (1) is arranged on the machine platform (4), and the connecting structure (2) and the carbon deposit collection structure (3) are located below the machine platform (4).

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