Paper pulp mold forming equipment and process

Abstract

The invention relates to the related technical field of paper pulp molds, in particular to paper pulp mold forming equipment and a technology, the paper pulp mold forming equipment comprises a base, a top seat, a lower hydraulic mechanism, a lower mold and an upper mold, a stand column is fixedly installed on the base, the top seat is fixedly installed at the upper side end of the stand column, and a cylinder body of the lower hydraulic mechanism is fixedly installed on the base; the lower surface of the lower mold is fixedly connected with a connecting rod, the lower end face of the connecting rod is fixedly connected with a lower connecting plate, and the lower connecting plate is fixedly connected with a telescopic rod of the lower hydraulic mechanism; the paper pulp mold forming equipment formed by combining the base, the top seat, the lower hydraulic mechanism, the lower mold and the upper mold is arranged, and the adsorption groove, the adsorption micro holes and the air suction port are formed in the lower mold, so that negative pressure is formed in the adsorption groove through the air exhaust effect, and water in a cup stand just formed in a mold cavity is pumped out; therefore, the shaping efficiency of the cup stand is effectively improved, and the overall production efficiency of equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pulp molds, and specifically relates to a pulp mold forming device and process. Background Technique

[0002] Paper trays, also known as pulp molding, are made from waste carton corners, newsprint, white pure wood pulp, etc. The raw materials are pulped and formulated into a slurry with a certain proportion of concentration. Then, according to the product design, on a customized numerical control mold, after vacuum adsorption molding, it is dried to form different types and uses of environmentally friendly paper products;

[0003] The existing Chinese patent document with the publication number CN210364603U discloses a paper tray adsorption device. Its solution includes a blanking module and an adsorption module. The blanking module is arranged above the adsorption module; the blanking module includes a paper tray baffle plate, and the paper tray baffle plate is provided with a plurality of through holes; the adsorption module includes a bracket, a rotating shaft, a rotating driver, an adsorption disk and a vacuum system. The bracket is arranged below the paper tray baffle plate. The bracket is installed with a rotating shaft and a rotating driver. The rotating driver is used to drive the rotating shaft to rotate around its axis; a lifting driver is vertically arranged on the axial surface of the rotating shaft, and an adsorption disk is installed at the output end of the lifting driver; the adsorption disk is provided with a plurality of adsorption heads, and the positions and quantities of the plurality of adsorption heads correspond to the through holes; the vacuum system is used to form negative pressure on the adsorption disk;

[0004] However, in the above solution, the surface of the formed paper tray is a smooth surface, resulting in insufficient overall strength of the formed paper tray. And setting grooves with forming rib structures on the surface of the mold will result in a large contact area between the mold and the formed paper tray, and it will be more difficult for the mold to be demolded in the subsequent process. Therefore, the present invention proposes a pulp mold forming device and process to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a pulp mold forming device and process to solve the problems proposed in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A pulp mold forming device, including:

[0007] A base, on which a column is fixedly installed;

[0008] A top seat, which is fixedly installed on the upper side end of the column;

[0009] A lower hydraulic mechanism, the cylinder body of which is fixedly installed on the base;

[0010] A lower mold, the lower surface of which is fixedly connected with a connecting rod, the lower end surface of the connecting rod is fixedly connected with a lower connecting plate, and the lower connecting plate is fixedly connected with the telescopic rod of the lower hydraulic mechanism;

[0011] The upper mold, and the upper mold is fixedly connected to the top seat through a connecting column;

[0012] When the lower mold and the upper mold are closed, a mold cavity is formed between the lower mold and the upper mold. The mold cavity is used for casting and forming a cup holder. A pouring port is opened on the lower mold, and the pouring port is used to inject pulp into the mold cavity.

[0013] Preferably, an adsorption groove is opened on the lower mold. Adsorption micropores are opened on the side wall of the adsorption groove. Multiple groups of adsorption micropores are evenly opened on the lower mold, and the adsorption micropores are communicated with the mold cavity. An air suction port is opened on the adsorption groove, and the air suction port is connected to a pumping device through a trachea.

[0014] Preferably, the cross section of the adsorption groove is arched, and a drain port is opened at the bottom position of the adsorption groove. The drain port is connected to a water storage tank through a water pipe. Electromagnetic cut-off valves are arranged at the positions of the drain port, the air suction port, and the pouring port.

[0015] Preferably, a filter layer is connected to the surface of the lower mold facing the mold cavity. The filter layer is geotextile, and the filter layer covers all the ports of the adsorption micropores.

[0016] Preferably, bottom strengthening rib strips are formed on the lower surface of the cup holder, and side wall strengthening rib strips are formed on the side wall of the cup holder. The bottom strengthening rib strips and the side wall strengthening rib strips are both arranged in a circle around the cup holder.

[0017] Preferably, a first-level movable groove is opened on the upper mold. The first-level movable groove is fan-shaped, and six first-level movable grooves are arranged in a circle. A first-level movable block is movably arranged in the first-level movable groove. A docking rod is fixedly connected to the upper surface of the first-level movable block. An upper hydraulic mechanism is fixedly installed on the top seat. An upper connecting plate is fixedly installed on the telescopic rod of the upper hydraulic mechanism. The docking rod is fixedly connected to the upper connecting plate.

[0018] Preferably, when the upper hydraulic mechanism is in the return stroke state, the first-level movable block is completely retracted into the first-level movable groove. When the upper hydraulic mechanism is in the forward stroke state, a part of the first-level movable block protrudes outside the first-level movable groove, and a bottom strengthening rib strip forming groove is formed by enclosing between adjacent first-level movable blocks. The bottom strengthening rib strip forming groove is used for forming the bottom strengthening rib strips.

[0019] Preferably, a secondary movable groove is formed on the side wall of the upper die. The secondary movable grooves are arranged in a circle around the upper die. A secondary movable block is movably arranged in the secondary movable groove. The outer end of the secondary movable block is wedge-shaped. A connecting beam is fixedly connected to the side surface of the docking rod. A force-bearing seat is arranged at the upper side edge position of the upper die. The force-bearing seat is fixedly connected to the connecting beam. The force-bearing seat is annularly arranged, and the inner side surface of the force-bearing seat is inclined. The slope of the inclined surface of the force-bearing seat coincides with the slope value of the outer end of the secondary movable block. When the upper hydraulic mechanism moves forward, the force-bearing seat generates an inward pushing force on the secondary movable block. At this time, the inner end of the secondary movable block extends into the mold cavity, and the secondary movable blocks enclose a side wall strengthening rib forming groove, which is used for forming the side wall strengthening ribs.

[0020] Preferably, a primary spring connecting seat is integrally formed on the side wall of the upper die. A secondary spring connecting seat is integrally formed on the side wall of the secondary movable block. The primary spring connecting seat and the secondary spring connecting seat are arranged corresponding to each other, and a return spring is connected between the primary spring connecting seat and the secondary spring connecting seat. When the return spring is in the reset state, the secondary movable block moves outward, and at this time, the secondary movable block is completely received into the secondary movable groove.

[0021] A pulp mold forming process is realized by the above-mentioned pulp mold forming equipment. The forming process includes:

[0022] The pulp mixing process. During the pulp mixing process, a small amount of functional additives are added into the pulp storage tank, and clear water is added, and the pulp in the pulp storage tank is adjusted to the concentration required for forming.

[0023] The forming process. During the forming process, the pulp is formed by the above-mentioned pulp mold forming equipment.

[0024] The drying process. During the drying process, the formed cup holder is dried by a drying device.

[0025] The shaping process. The dried cup holder is shaped for defects.

[0026] The inspection process;

[0027] The packaging process;

[0028] Storage in the warehouse.

[0029] Compared with the prior art, the beneficial effects of the present invention are:

[0030] 1. By setting up a pulp mold forming device composed of a base, a top seat, a lower hydraulic mechanism, a lower mold, and an upper mold, and by opening an adsorption groove, adsorption micropores, and an air suction port on the lower mold, through the air extraction effect, a negative pressure is formed in the adsorption groove, so as to extract the moisture in the just-formed cup holder in the mold cavity, thereby effectively improving the shaping efficiency of the cup holder and thus enhancing the overall production efficiency of the equipment;

[0031] 2. By arranging a first-stage movable block in the first-stage movable groove on the upper mold and a second-stage movable block in the second-stage movable groove on the upper mold, a bottom reinforcing rib forming groove is formed by enclosing the first-stage movable blocks and a sidewall reinforcing rib forming groove is formed by enclosing the second-stage movable blocks, so as to facilitate the formation of bottom reinforcing ribs and sidewall reinforcing ribs on the cup holder, thereby effectively improving the overall strength of the cup holder. Moreover, the telescopic arrangement of the first-stage movable block and the second-stage movable block can facilitate the demolding of the cup holder. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of the present invention;

[0033] Figure 2 is a half-sectional view of the present invention;

[0034] Figure 3 is Figure 2 an enlarged schematic view of the structure at A in

[0035] Figure 4 is Figure 3 an enlarged schematic view of the structure at B in

[0036] Figure 5 is Figure 4 an enlarged schematic view of the structure at C in

[0037] Figure 6 a schematic view of the upper side of the first-stage movable block and the force-bearing seat of the present invention;

[0038] Figure 7 a schematic view of the lower side of the first-stage movable block and the force-bearing seat of the present invention;

[0039] Figure 8 is a schematic structural diagram of the lower mold of the present invention;

[0040] Figure 9 is a schematic structural diagram of the upper mold of the present invention;

[0041] Figure 10 is a schematic structural diagram of the second-stage movable block of the present invention;

[0042] Figure 11 is a schematic structural diagram of the cup holder.

[0043] In the figure: base 1, top seat 2, lower hydraulic mechanism 3, lower mold 4, upper mold 5, column 6, connecting rod 7, lower connecting plate 8, connecting column 9, cup holder 10, bottom reinforcing rib 11, side wall reinforcing rib 12, first-level movable groove 13, first-level movable block 14, docking rod 15, upper connecting plate 16, upper hydraulic mechanism 17, second-level movable groove 18, second-level movable block 19, first-level spring connection seat 20, second-level spring connection seat 21, return spring 22, adsorption groove 24, adsorption micropore 25, filter layer 26, pouring port 27, air suction port 28, drain port 29, connecting beam 30, stress seat 31. Detailed implementation manners

[0044] In order to clearly and completely describe the objectives, technical solutions of the present invention and make the advantages more clearly understood, the following further elaborates on the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only a part of the embodiments of the present invention, rather than all the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0045] Please refer to Figures 1 - 11 , the present invention provides embodiments of the following three preferred solutions:

[0046] Embodiment 1, a pulp mold forming device, including a base 1, a top seat 2, a lower hydraulic mechanism 3, a lower mold 4 and an upper mold 5. A column 6 is fixedly installed on the base 1, the top seat 2 is fixedly installed on the upper side end of the column 6, the cylinder body of the lower hydraulic mechanism 3 is fixedly installed on the base 1, the lower surface of the lower mold 4 is fixedly connected with a connecting rod 7, the lower end surface of the connecting rod 7 is fixedly connected with a lower connecting plate 8, and the lower connecting plate 8 is fixedly connected with the telescopic rod of the lower hydraulic mechanism 3. The upper mold 5 is fixedly connected with the top seat 2 through a connecting column 9. When the lower mold 4 and the upper mold 5 are closed, a mold cavity is formed between the lower mold 4 and the upper mold 5, and the mold cavity is used for pouring and forming a cup holder 10. A pouring port 27 is opened on the lower mold 4, and the pouring port 27 is used for injecting pulp into the mold cavity.

[0047] The lower die 4 is provided with an adsorption groove 24, and adsorption micro-holes 25 are arranged on the side wall of the adsorption groove 24. A plurality of groups of adsorption micro-holes 25 are evenly arranged on the lower die 4, and the adsorption micro-holes 25 communicate with the die cavity. An air suction port 28 is arranged on the adsorption groove 24, and the air suction port 28 is connected to a suction device through a trachea. By providing a pulp mold forming device composed of a base 1, a top seat 2, a lower hydraulic mechanism 3, a lower die 4 and an upper die 5, and by arranging the adsorption groove 24, the adsorption micro-holes 25 and the air suction port 28 on the lower die 4, a negative pressure is formed in the adsorption groove 24 through the air suction effect, so as to extract the moisture in the just-formed cup holder 10 in the die cavity, thereby effectively improving the shaping efficiency of the cup holder 10 and thus improving the overall production efficiency of the device.

[0048] The cross-section of the adsorption groove 24 is arched, and a drain port 29 is arranged at the bottom position of the adsorption groove 24. The drain port 29 is connected to a water storage tank through a water pipe. Electromagnetic cut-off valves are arranged at the positions of the drain port 29, the air suction port 28 and the pouring port 27. A filter layer 26 is connected to the surface of the lower die 4 facing the die cavity. The filter layer 26 is geotextile, and the filter layer 26 covers all the ports of the adsorption micro-holes 25 to prevent pulp from entering the adsorption micro-holes 25 and causing blockage of the adsorption micro-holes 25.

[0049] In the second embodiment, on the basis of the first embodiment, a bottom strengthening rib 11 is formed on the lower surface of the cup holder 10, and a side wall strengthening rib 12 is formed on the side wall of the cup holder 10. The bottom strengthening rib 11 and the side wall strengthening rib 12 are both arranged in a circle around the cup holder 10.

[0050] The upper die 5 is provided with a first-level movable groove 13. The first-level movable groove 13 is fan-shaped, and six first-level movable grooves 13 are arranged in a circle. A first-level movable block 14 is movably arranged in the first-level movable groove 13. A docking rod 15 is fixedly connected to the upper surface of the first-level movable block 14. An upper hydraulic mechanism 17 is fixedly installed on the top seat 2. An upper connecting plate 16 is fixedly installed on the telescopic rod of the upper hydraulic mechanism 17. The docking rod 15 is fixedly connected to the upper connecting plate 16.

[0051] When the upper hydraulic mechanism 17 is in the return stroke state, the first-level movable block 14 is completely retracted into the first-level movable groove 13. When the upper hydraulic mechanism 17 is in the forward stroke state, a part of the first-level movable block 14 protrudes outside the first-level movable groove 13, and a bottom strengthening rib forming groove is formed by enclosing between adjacent first-level movable blocks 14. The bottom strengthening rib forming groove is used for forming the bottom strengthening rib 11.

[0052] On the side wall of the upper die 5, there is a secondary movable groove 18. The secondary movable grooves 18 are arranged in a circle around the upper die 5 at equal circumferences. A secondary movable block 19 is movably arranged in the secondary movable groove 18. The outer end of the secondary movable block 19 is wedge-shaped. A connecting beam 30 is fixedly connected to the side surface of the docking rod 15. At the upper side edge position of the upper die 5, there is a force-bearing seat 31. The force-bearing seat 31 is fixedly connected to the connecting beam 30. The force-bearing seat 31 is annularly arranged, and the inner side surface of the force-bearing seat 31 is inclined. And the slope of the inclined surface of the force-bearing seat 31 coincides with the slope value of the outer end of the secondary movable block 19. When the upper hydraulic mechanism 17 moves forward, the force-bearing seat 31 generates an inward pushing force on the secondary movable block 19. And at this time, the inner end of the secondary movable block 19 extends into the mold cavity, and the secondary movable blocks 19 enclose to form a side wall strengthening rib forming groove. The side wall strengthening rib forming groove is used for forming the side wall strengthening rib 12. By arranging the primary movable block 14 in the primary movable groove 13 on the upper die 5 and arranging the secondary movable block 19 in the secondary movable groove 18 on the upper die 5, the primary movable block 14 encloses to form a bottom strengthening rib forming groove, and the secondary movable block 19 encloses to form a side wall strengthening rib forming groove, so as to facilitate the formation of the bottom strengthening rib 11 and the side wall strengthening rib 12 on the cup holder 10, thereby effectively improving the overall strength of the cup holder 10. And the telescopic settings of the primary movable block 14 and the secondary movable block 19 can facilitate the demolding of the cup holder 10.

[0053] On the side wall of the upper die 5, a primary spring connecting seat 20 is integrally formed. On the side wall of the secondary movable block 19, a secondary spring connecting seat 21 is integrally formed. The primary spring connecting seat 20 and the secondary spring connecting seat 21 are correspondingly arranged. And a return spring 22 is connected between the primary spring connecting seat 20 and the secondary spring connecting seat 21. When the return spring 22 is in the reset state, the secondary movable block 19 moves outward. And at this time, the secondary movable block 19 is completely received into the secondary movable groove 18, which is convenient for the transmission between the connecting beam 30 and the force-bearing seat 31. Thus, through a single driving structure, the primary movable block 14 and the secondary movable block 19 can be driven synchronously, effectively reducing the use of the power source of the device, and facilitating the daily circuit maintenance of the equipment.

[0054] Embodiment 3, on the basis of Embodiment 2, a paper pulp mold forming process, the paper pulp mold forming process is realized by the above-mentioned paper pulp mold forming equipment. The forming process includes:

[0055] The sizing process. During the sizing process, a small amount of functional additives are added into the pulp storage tank, and clear water is added, and the pulp in the pulp storage tank is adjusted to the concentration required for forming.

[0056] Forming process: The forming process forms the pulp through the above-mentioned pulp mold forming equipment. Specifically, the lower hydraulic mechanism 3 drives the lower mold 4, so that the lower mold 4 is closed with the upper mold 5. Then, the pulp is injected into the mold cavity through the pouring port 27. Then, a negative pressure is generated by the operation of the air extraction equipment, so that the water in the pulp can be better sucked into the adsorption tank 24, and the drain port 29 is regularly opened to discharge the water, so as to accelerate the discharge of the water in the cup holder 10, thereby effectively improving the forming efficiency of the cup holder 10;

[0057] Drying process: In the drying process, the formed cup holder is dried by the drying equipment;

[0058] Shaping process: The dried cup holder is shaped to remove defects;

[0059] Inspection process;

[0060] Packaging process;

[0061] Storage.

[0062] Although the above description of the illustrative specific embodiments of the present application is provided for those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims, all applications and creations using the concept of the present application are within the scope of protection.

Claims

1. A pulp mold forming device, characterized in that: Comprising: A base (1), on which a column (6) is fixedly installed; A top seat (2), which is fixedly installed on the upper side end of the column (6); A lower hydraulic mechanism (3), the cylinder body of which is fixedly installed on the base (1); A lower die (4), the lower surface of which is fixedly connected with a connecting rod (7), the lower end surface of the connecting rod (7) is fixedly connected with a lower connecting plate (8), and the lower connecting plate (8) is fixedly connected with the telescopic rod of the lower hydraulic mechanism (3); An upper die (5), which is fixedly connected with the top seat (2) through a connecting column (9); When the lower die (4) and the upper die (5) are closed, a mold cavity is formed between the lower die (4) and the upper die (5), and the mold cavity is used for casting and forming a cup holder (10). A pouring port (27) is formed on the lower die (4), and the pouring port (27) is used for injecting pulp into the mold cavity.

2. The pulp mold forming device according to claim 1, characterized in that: An adsorption groove (24) is formed on the lower die (4), adsorption micropores (25) are formed on the side wall of the adsorption groove (24), and multiple groups of adsorption micropores (25) are uniformly formed on the lower die (4). The adsorption micropores (25) are communicated with the mold cavity. An air suction port (28) is formed on the adsorption groove (24), and the air suction port (28) is connected with an air extraction device through a trachea.

3. The pulp mold forming equipment according to claim 2, characterized in that: The cross section of the adsorption groove (24) is arched, and a drain port (29) is formed at the bottom position of the adsorption groove (24). The drain port (29) is connected with a water storage tank through a water pipe. Electromagnetic cut-off valves are arranged at the positions of the drain port (29), the air suction port (28), and the pouring port (27).

4. A pulp mold forming device according to claim 3, characterized in that: A filter layer (26) is connected to the surface of the lower die (4) facing the mold cavity. The filter layer (26) is geotextile, and the filter layer (26) covers all the ports of the adsorption micropores (25).

5. A pulp mold forming device according to claim 4, characterized in that: Bottom strengthening ribs (11) are formed on the lower surface of the cup holder (10), and side wall strengthening ribs (12) are formed on the side wall of the cup holder (10). The bottom strengthening ribs (11) and the side wall strengthening ribs (12) are both arranged in a circle around the cup holder (10).

6. A pulp mold forming device according to claim 5, characterized in that: A first-level movable groove (13) is formed on the upper die (5). The first-level movable groove (13) is fan-shaped, and six first-level movable grooves (13) are arranged in a circle. A first-level movable block (14) is movably arranged in the first-level movable groove (13). A docking rod (15) is fixedly connected to the upper surface of the first-level movable block (14). An upper hydraulic mechanism (17) is fixedly installed on the top seat (2). An upper connecting plate (16) is fixedly installed on the telescopic rod of the upper hydraulic mechanism (17). The docking rod (15) is fixedly connected with the upper connecting plate (16).

7. A pulp mold forming device according to claim 6, characterized in that: When the upper hydraulic mechanism (17) is in the return stroke state, the first-stage movable block (14) is completely retracted into the first-stage movable groove (13). When the upper hydraulic mechanism (17) is in the forward stroke state, a part of the first-stage movable block (14) protrudes outside the first-stage movable groove (13), and a bottom reinforcing rib forming groove is formed by enclosing between adjacent first-stage movable blocks (14). The bottom reinforcing rib forming groove is used for forming the bottom reinforcing rib (11).

8. A pulp mold forming device according to claim 7, characterized in that: A second-stage movable groove (18) is formed on the side wall of the upper die (5). The second-stage movable groove (18) is arranged in a circle around the upper die (5). A second-stage movable block (19) is movably arranged in the second-stage movable groove (18). The outer end of the second-stage movable block (19) is wedge-shaped. A connecting beam (30) is fixedly connected to the side surface of the docking rod (15). A force-bearing seat (31) is arranged at the upper side edge position of the upper die (5). The force-bearing seat (31) is fixedly connected to the connecting beam (30). The force-bearing seat (31) is annular, and the inner side surface of the force-bearing seat (31) is inclined. The slope of the inclined surface of the force-bearing seat (31) coincides with the slope value of the outer end of the second-stage movable block (19). When the upper hydraulic mechanism (17) moves forward, the force-bearing seat (31) generates an inward pushing force on the second-stage movable block (19). At this time, the inner end of the second-stage movable block (19) extends into the die cavity, and a side wall reinforcing rib forming groove is formed by enclosing between the second-stage movable blocks (19). The side wall reinforcing rib forming groove is used for forming the side wall reinforcing rib (12).

9. A pulp mold forming device according to claim 8, characterized in that: A first-stage spring connecting seat (20) is integrally formed on the side wall of the upper die (5). A second-stage spring connecting seat (21) is integrally formed on the side wall of the second-stage movable block (19). The first-stage spring connecting seat (20) and the second-stage spring connecting seat (21) are arranged corresponding to each other, and a return spring (22) is connected between the first-stage spring connecting seat (20) and the second-stage spring connecting seat (21). When the return spring (22) is in the return state, the second-stage movable block (19) moves outward, and at this time, the second-stage movable block (19) is completely retracted into the second-stage movable groove (18).

10. A pulp mold forming process, characterized in that: The pulp mold forming process is realized by the pulp mold forming equipment according to any one of the above claims 1-9. The forming process includes: The pulp mixing process. In the pulp mixing process, a small amount of functional additives are added into the pulp storage tank, and clear water is added, and the pulp in the pulp storage tank is adjusted to the concentration required for forming. The forming process. In the forming process, the pulp is formed by the above pulp mold forming equipment. The drying process. In the drying process, the formed cup holder is dried by a drying device. The shaping process. The dried cup holder is shaped for defects. The inspection process; The packaging process; Storage in warehouse.

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