Disposable paper tableware forming equipment

Abstract

The present invention relates to disposable paper tableware forming equipment, including a workbench, a plurality of forming mold tables arranged on the workbench, a chain drive module arranged on the workbench for driving the forming mold tables to sequentially pass through various stations on the workbench, an extrusion module arranged on the workbench for cooperating with the cavity on the forming mold table to form a cavity and extrude and dehydrate the semi-finished product in the cavity, and a high-temperature drying module arranged on the workbench for drying the semi-finished product in the cavity on the forming mold table. In the moving direction of the forming mold table, the high-temperature drying module is located behind the extrusion module. The disposable paper tableware forming equipment disclosed in the present invention manufactures paper tableware with a certain depth by capillary adsorption, so that the water content of each part of the semi-finished product can meet the drying requirements, which helps to shorten the drying time and reduce the energy consumption of the drying process.

Description

Technical Field

[0001] The invention relates to the technical field of automated production, in particular to disposable paper tableware forming equipment. Background Art

[0002] Paper tableware is made by vacuum forming and drying paper pulp with a mold, and then further processed to replace metal and plastic tableware for people to use. The current production processes mainly include pulp compression and drying forming and cutting and shaping. The pulp compression and drying forming process can produce products with richer shapes.

[0003] There are two core processes in pulp compression and drying process, extrusion molding and drying. Extrusion molding is directly related to the drying process. Insufficient extrusion force will lead to a long drying process with high energy consumption. For products with small depth, the extrusion molding process can remove most of the water in the raw material slurry, but for products with large depth, the simple extrusion molding process can only make the moisture content of the edge and near the edge of the semi-finished product meet the drying requirements. The bottom needs a longer drying time because of the high moisture content. Summary of the invention

[0004] The present invention provides disposable paper tableware forming equipment, which manufactures paper tableware with a certain depth by capillary adsorption, so that the water content of each part of the semi-finished product can meet the drying requirements, which helps to shorten the drying time and reduce the energy consumption of the drying process.

[0005] The above object of the present invention is achieved through the following technical solutions:

[0006] The present invention provides a disposable paper tableware forming device, comprising:

[0007] Workbench;

[0008] Multiple forming die tables are arranged on the workbench;

[0009] A chain drive module is arranged on the workbench and is used to drive the forming die table to sequentially pass through various stations on the workbench;

[0010] An extrusion die set is arranged on a workbench and is used to cooperate with the cavity on the forming die table to form a cavity and extrude and dehydrate the semi-finished product in the cavity; and

[0011] A high temperature drying module is provided on the workbench and is used to dry the semi-finished product in the cavity of the molding die table;

[0012] Wherein, the die surface of the extrusion die set is uniformly distributed with capillary channels;

[0013] In the moving direction of the forming die table, the high temperature drying module is located behind the extrusion module.

[0014] In a possible implementation of the present invention, the extrusion die set includes:

[0015] The first lifting workbench is arranged on the workbench;

[0016] The mold is arranged on the first lifting workbench;

[0017] The pressure adjustment chamber is located inside the mold;

[0018] A capillary channel is provided in the mold, and two ends of the capillary channel are respectively connected to the surface of the mold and the pressure adjustment chamber; and

[0019] The driver is connected to the pressure adjustment chamber and is used to increase and decrease the air pressure in the pressure adjustment chamber.

[0020] In a possible implementation of the present invention, the mold is detachably fixed on the first lifting workbench;

[0021] The mold includes a plurality of sequentially abutted sub-molds;

[0022] The capillary channels are located between adjacent sub-molds.

[0023] In a possible implementation of the present invention, a curved section is provided in the capillary channel near the mold surface.

[0024] In a possible implementation of the present invention, the high temperature drying module includes:

[0025] A first lifting workbench is arranged on the workbench;

[0026] A drying mold is arranged on the first lifting workbench; and

[0027] Steam pipes connect the drying mold to the steam source into the circuit.

[0028] In a possible implementation of the present invention, the drying mold includes:

[0029] a base, mounted on a work surface; and

[0030] A contact body, detachably fixed on the base;

[0031] The steam channel is located between the base and the contact body.

[0032] In a possible implementation of the present invention, a plurality of parallel sub-channels are provided between two ends of the steam channel.

[0033] In a possible implementation of the present invention, the steam channel is located on the base

[0034] In general, the disposable paper tableware forming equipment disclosed in the present invention produces paper tableware with a certain depth by capillary adsorption, which can make the water content of each part of the semi-finished product tend to be consistent. In this way, during the drying process, the water loss rate of each part of the semi-finished product tends to be consistent, and a better quality finished product can be obtained. At the same time, the drying time can be shortened and the energy consumption of the drying process can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of a paper tableware forming device provided by the present invention.

[0036] Figure 2 The figure is a schematic diagram of the working principle of a chain drive module provided by the present invention.

[0037] Figure 3 It is a schematic diagram of the matching relationship between a mold and a mold table provided by the present invention.

[0038] Figure 4 It is a structural schematic diagram of a mold provided by the present invention.

[0039] Figure 5 It is a structural schematic diagram of a sub-mold provided by the present invention.

[0040] Figure 6 It is a structural schematic diagram of an extrusion die set provided by the present invention.

[0041] Figure 7 It is a schematic diagram of the connection relationship between a plurality of molds and a driver provided by the present invention.

[0042] Figure 8 It is a structural schematic diagram of a high-temperature drying module provided by the present invention.

[0043] Fig. 9 It is a structural schematic diagram of a drying mold provided by the present invention.

[0044] In the figure, 2, extrusion module, 3, high temperature drying module, 11, workbench, 12, forming mold table, 13, chain drive module, 21, first lifting workbench, 22, mold, 23, pressure adjustment chamber, 24, capillary pipe, 25, driver, 31, second lifting workbench, 32, drying mold, 33, steam pipe, 221, sub-mold, 241, bending section, 321, base, 322, contact body. DETAILED DESCRIPTION

[0045] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0046] See also Figure 1 and Figure 2, which is a disposable paper tableware forming device disclosed in the present invention, mainly consists of a workbench 11, a forming mold table 12, a chain drive module 13, an extrusion module 2 and a high-temperature drying module 3. The forming mold table 12 and the chain drive module 13 are both installed on the workbench 11. There are multiple forming mold tables 12. These forming mold tables 12 pass through each station on the workbench 11 in sequence under the drive of the chain drive module 13.

[0047] A distance is reserved at both the front and rear ends of the workbench 11 for use by staff or mechanical equipment.

[0048] The molding mold table 12 is slidably connected to the workbench 11. There are two ways to return from the end point to the starting point. The first is that the workbench 11 is a ring-shaped workbench, and the molding mold table 12 rotates circularly on the ring-shaped workbench; the second is that a return transport platform is arranged next to the workbench 11, and the molding mold table 12 circulates between the workbench 11 and the return transport platform.

[0049] There are three workstations on the workbench 11, namely the injection station, the extrusion station and the drying station. An injection machine is deployed at the injection station, which is responsible for quantitatively injecting the raw material slurry into each cavity on the molding die table 12; the extrusion module 2 is installed on the workbench and located at the extrusion station. Its function is to cooperate with the cavity on the molding die table 12 to form a cavity and extrude and dehydrate the semi-finished product in the cavity; the high-temperature drying module 3 is installed on the workbench and located at the drying station, and is used to dry the semi-finished product in the cavity on the molding die table 12.

[0050] The injection station, the extrusion station and the drying station are arranged in sequence according to the moving direction of the molding die table 12 , that is, in the moving direction of the molding die table 12 , the high temperature drying module 3 is located behind the extrusion module 2 .

[0051] The surface of the mold 22 of the extrusion die 2 is evenly distributed with capillaries 24 . During the extrusion process, most of the water in the raw material slurry in the cavity on the forming die table 12 flows out of the cavity after receiving pressure, and the remaining water in the raw material slurry flows into the mold 22 through the capillaries 24 .

[0052] In this way, the moisture content of each part of the semi-finished product in the cavity on the forming mold table 12 can be made uniform. It should be understood that if the moisture in the raw material slurry is removed only by extrusion, the moisture content of the part of the semi-finished product located in the center of the cavity will definitely be higher than that of the remaining part, because the moisture in the raw material slurry can only flow to the edge of the cavity first and then flow out of the cavity.

[0053] See also Figures 3 to 5When using a mold 22 with capillary channels 24, the moisture in the semi-finished product can flow into the capillary channels 24. That is, the moisture in the semi-finished product located at the center of the cavity does not need to flow to the edge of the cavity first and then flow out of the cavity, but can directly flow into the capillary channels 24 on the mold 22.

[0054] The capillary channels 24 are evenly distributed on the mold 22, and can absorb moisture from various parts of the semi-finished product. For products with a certain depth, this advantage is very obvious, and the moisture in various parts of the semi-finished product can be effectively reduced and tend to be consistent. For the subsequent drying process, this can shorten the drying time and reduce the energy consumption of the drying process. In terms of product quality, the moisture content at the bottom and edge of the finished product is similar, and various parameters are also tending to be the same.

[0055] See also Figure 5 and Figure 6 The extrusion die set 2 is composed of a first lifting workbench 21, a mold 22, a pressure adjustment chamber 23, a capillary 24 and a driver 25. The first lifting workbench 21 is installed on the workbench 11, and the mold 22 is installed on the first lifting workbench 21. The first lifting workbench 21 drives the mold 22 to move toward and away from the workbench 11.

[0056] The pressure adjustment chamber 23 is arranged in the mold 22, and the capillary channel 24 is also arranged in the mold 22, and the two ends of the capillary channel 24 are respectively connected to the surface of the mold 22 and the pressure adjustment chamber 23. The function of the pressure adjustment chamber 23 is to adjust the flow direction of water in the capillary channel 24.

[0057] In the initial downward pressing stage, the pressure adjusting chamber 23 maintains the pressure. At this time, the mold 22 contacts the raw material slurry in the cavity on the molding mold table 12, and the raw material slurry begins to form and dehydrate. The dehydrated water flows out from the gap between the cavity and the mold 22, or flows out from the drainage holes on the cavity.

[0058] After this stage, the pressure in the pressure adjustment chamber 23 drops, and the mold 22 continues to apply pressure to the semi-finished product in the cavity on the molding mold table 12. At this time, the moisture in the semi-finished product will flow into the capillary channel 24, and then the mold 22 will break away from the semi-finished product.

[0059] The air pressure in the pressure adjustment chamber 23 is adjusted by the driver 25, which is connected to the pressure adjustment chamber 23 and is used to increase and decrease the air pressure in the pressure adjustment chamber 23. When there are multiple molds 22, these molds 22 are connected by pipelines and connected to the driver 25 through the pipelines. Figure 7 shown.

[0060] In some possible implementations, the driver 25 is composed of a reversing valve, a positive pressure tank, a negative pressure tank, and two air compressors, wherein the first air compressor injects air into the positive pressure tank, and the second air compressor extracts air from the negative pressure tank. The positive pressure tank, the negative pressure tank, and the pressure adjustment chamber 23 are all connected to the reversing valve.

[0061] The mold 22 mentioned above is detachably fixed on the first lifting workbench 21. The mold 22 is composed of a plurality of sub-molds 221 that are sequentially abutted. The capillary channel 24 is located between adjacent sub-molds 221. This processing method can directly process the capillary channel 24 on the side of the sub-mold 221, which has lower processing difficulty and can also better control the diameter of the capillary channel 24.

[0062] See also Figure 5 In some possible implementations, the capillary channel 24 is provided with a curved section 241 near the surface of the mold 22 , and the function of the curved section 241 is to prevent the capillary channel 24 from being blocked.

[0063] After the forming mold table 12 is moved to the drying station, the high temperature drying module 3 dries the semi-finished product on the forming mold table 12. Figure 8 and Fig. 9 The high temperature drying module 3 is composed of a second lifting workbench 31, a drying mold 32 and a steam pipe 33. The second lifting workbench 31 is installed on the workbench 11. Its function is the same as that of the first lifting workbench 21, which will not be repeated here.

[0064] The drying mold 32 is arranged on the second lifting worktable 31, and a steam pipe 33 is arranged inside the drying mold 32. When steam flows in the steam pipe 33, the temperature of the drying mold 32 rises. After the high-temperature drying mold 32 contacts the semi-finished product on the molding die table 12, the temperature of the semi-finished product rises. The moisture inside the semi-finished product evaporates after being heated.

[0065] See also Fig. 9 The drying mold 32 is composed of a base 321 and a contact body 322. The base 321 is fixed on the workbench 11, and the contact body 322 is detachably fixed on the base 321. The steam channel 33 is located between the base 321 and the contact body 322. There are multiple parallel sub-channels between the two ends of the steam channel 33, so that the temperature of the entire surface of the contact body 322 can be increased.

[0066] This structure has two advantages. The first is that it is convenient to process the steam channel 33 . The second is that when producing a series of products, it can be realized by replacing the contact body 322 . Furthermore, the steam channel 33 is located on the base 321 .

[0067] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Disposable paper tableware forming equipment, characterized in that: include: Workbench (11); A plurality of molding die tables (12) are arranged on the workbench (11); A chain drive module (13) is disposed on the workbench (11) and is used to drive the molding die table (12) to sequentially pass through various workstations on the workbench (11); An extrusion die set (2) is arranged on a workbench (11) and is used to cooperate with a cavity on a forming die table (12) to form a cavity and to extrude and dehydrate a semi-finished product in the cavity; and A high-temperature drying module (3) is disposed on the workbench (11) and is used to dry the semi-finished product in the cavity on the molding die table (12); Wherein, capillary channels (24) are evenly distributed on the surface of the mold (22) of the extrusion die set (2); In the moving direction of the molding die table (12), the high-temperature drying module (3) is located behind the extrusion module (2); The extrusion die set (2) comprises: A first lifting workbench (21) is disposed on the workbench (11); A mold (22) is arranged on the first lifting workbench (21); A pressure adjustment chamber (23) is arranged in the mold (22); A capillary channel (24) is disposed in the mold (22), with two ends of the capillary channel (24) respectively connected to the surface of the mold (22) and the pressure adjustment chamber (23) for absorbing moisture; and The driver (25) is connected to the pressure adjustment chamber (23) and is used to increase and decrease the air pressure in the pressure adjustment chamber (23), thereby adjusting the flow direction of water in the capillary channel (24); the driver (25) is composed of a reversing valve, a positive pressure tank, a negative pressure tank and two air compressors, the first air compressor injects air into the positive pressure tank, and the second air compressor extracts air from the negative pressure tank; the positive pressure tank, the negative pressure tank and the pressure adjustment chamber (23) are all connected to the reversing valve; The mold (22) is detachably fixed on the first lifting workbench (21); The mold (22) includes a plurality of sub-molds (221) that are sequentially abutted; The capillary channel (24) is located between adjacent sub-molds (221); The capillary channel (24) is provided with a curved section (241) near the surface of the mold (22).

2. The disposable paper tableware forming equipment according to claim 1, characterized in that: The high temperature drying module (3) comprises: A second lifting workbench (31) is disposed on the workbench (11); A drying mold (32) is arranged on the second lifting workbench (31); and The steam pipe (33) connects the drying mold (32) and the steam source into the loop.

3. The disposable paper tableware forming equipment according to claim 2, characterized in that: The drying mold (32) comprises: A base (321) is disposed on the workbench (11); and A contact body (322) is detachably fixed on the base (321); The steam pipe (33) is located between the base (321) and the contact body (322).

4. The disposable paper tableware forming equipment according to claim 3, characterized in that: There are a plurality of parallel sub-channels between the two ends of the steam pipe (33).

5. The disposable paper tableware forming equipment according to claim 3, characterized in that: The steam pipe (33) is located on the base (321).

Images