A production system for pulp molding products

Abstract

The present invention provides a production system for pulp molded products, and relates to the technical field of pulp molded production. The production system for pulp molded products includes a molding machine, a drying device, a spraying device, and a shaping machine, wherein the drying device is arranged on one side of the molding machine, and the spraying device and the shaping machine are arranged on the other side; the drying device includes a main housing and a rotary conveyor line, wherein the interior of the main housing is between an air inlet and an air outlet to form a drying chamber; the rotary conveyor line has a feeding section, an intermediate section, and a discharging section, wherein the intermediate section is arranged corresponding to the drying chamber, and the feeding section and the discharging section are located between the main housing and the molding machine; a carrier is movably installed on the rotary conveyor line, and the discharging section is provided with a flipping structure matched with the carrier, and when the carrier runs to the flipping structure, the carrier flips to complete the unloading; the fiber bonding strength of the product dried by the drying device is improved, which can reduce the risk of mold pore blockage, and the surface finish of the product can be enhanced after being sprayed by the spraying device and then hot-pressed and shaped.

Description

Technical Field

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

[0002] At present, the production of paper pulp molded tableware or work bags mostly adopts manual operations. Generally, the semi-finished equipment of tableware or work bags includes two setting machines and one forming machine. The equipment is arranged with the forming machine in the middle and the two setting machines on both sides of the forming machine. The wet embryo obtained by the forming machine needs to be transferred to the setting machine by manual handling, and the fine fibers of the product during the heating process of the setting machine will block the pores of the heating mold.

[0003] The existing technology increases production capacity by adding a large number of mold equipment, and replaces and cleans the mold when it is blocked. However, frequent mold replacement is time-consuming and labor-intensive, and does not solve the problem of fine fibers blocking the pores of the heating mold during the heating process. After the product is dried, the fine fibers attached to the surface of the product will affect the overall finish of the product. Summary of the invention

[0004] In order to solve the above problems, an object of the present invention is to provide a production system for pulp molded products to solve the problems of low production efficiency and low surface finish of pulp molded products in the prior art.

[0005] The technical solution of the production system of pulp molded products of the present invention is:

[0006] The production system of pulp molded products comprises a molding machine, a drying device, a wet spraying device and a setting machine, wherein the drying device is arranged on one side of the molding machine, and the wet spraying device and the setting machine are arranged on the other side of the molding machine;

[0007] The drying device comprises a main housing and a rotary conveyor line, wherein an air inlet is provided on the upper side of the main housing, an air outlet is provided on the lower side of the main housing, and a drying chamber is formed inside the main housing between the air inlet and the air outlet; a hot air blower is installed outside the main housing, and the hot air blower is connected to the air inlet and the air outlet;

[0008] The rotary conveyor line has a feeding section, a middle section and a discharging section, wherein the feeding section is located between the molding machine and the inlet of the drying device, the middle section is arranged corresponding to the drying chamber, and the discharging section is located between the outlet of the drying device and the molding machine;

[0009] A carrier is movably installed on the rotary conveyor line, and a flip structure is provided in the discharge section, and the flip structure cooperates with the carrier so that when the carrier runs to the flip structure, the carrier flips to complete the unloading;

[0010] A first conveying mechanism is connected between the discharging section and the wetting device, and the first conveying mechanism is used to convey the dried semi-finished products to the wetting station; a second conveying mechanism is connected between the wetting device and the shaping machine, and the second conveying mechanism is used to convey the semi-finished products after wetting to the shaping station.

[0011] Furthermore, the rotary conveyor line is a chain-type rotary conveyor line, which includes two conveyor chains arranged in parallel and at intervals, and a sprocket for driving the conveyor chains, and the carrier is hung between the two conveyor chains.

[0012] Furthermore, the carrier includes a ventilation plate, and end shafts arranged at both ends of the ventilation plate, the axes of the end shafts are parallel to the plate surface of the ventilation plate and are located above the ventilation plate, the end shafts are rotatably connected to the conveying chains on the corresponding sides, and the ventilation plate is gap-matched with the two conveying chains.

[0013] Furthermore, a feed and discharge bracket is provided between the molding machine and the drying device, the feed section and the discharge section are both arranged on the feed and discharge bracket, and the flip structure is installed at a position of the feed and discharge bracket corresponding to the discharge section.

[0014] Furthermore, the flip structure includes a first guide portion and a second guide portion which are smoothly connected, the first guide portion being arranged obliquely upward along a discharging direction of the discharging section, and the second guide portion being arranged obliquely downward along a discharging direction of the discharging section.

[0015] Furthermore, a blocking rod is provided on one side of the ventilation plate close to the drying device, and the blocking rod is slidably matched with the first guide portion and the second guide portion to cause the carrier to flip forward when the blocking rod passes through the first guide portion.

[0016] Furthermore, the hot air blower is installed on a side of the drying device away from the molding machine, and a hot air pipe is provided between the air inlet duct and the molding machine.

[0017] Furthermore, the hot air blower includes an induced draft fan and a furnace, the induced draft fan is connected to the air outlet, the furnace is connected to the air inlet, a return air duct is connected between the induced draft fan and the furnace, and a moisture removal port is connected to the return air duct.

[0018] Furthermore, a transfer conveyor belt is connected to the end of the first conveying mechanism, and a material storage and transportation mechanism is arranged below the transfer conveyor belt. The transfer conveyor belt has a first docking state and a second docking state. When the transfer conveyor belt is in the first docking state, the transfer conveyor belt rises to open the path between the first conveying mechanism and the wetting device. When the transfer conveyor belt is in the second docking state, the transfer conveyor belt descends to open the path between the first conveying mechanism and the material storage and transportation mechanism.

[0019] Furthermore, there are at least two setting machines, and the second conveying mechanism is respectively connected between the wetting device and at least two of the setting machines.

[0020] Beneficial effects: The production line of pulp molded tableware and work bags mainly includes a forming machine, a drying device, a wet spraying device and a shaping machine. The drying equipment includes a main casing and a rotary conveyor line. An air inlet is provided on the upper side of the main casing, and an air outlet is provided on the lower side. A drying chamber is formed inside the main casing between the air inlet and the air outlet. A hot air blower is installed outside the main casing, and the hot air blower connects the air inlet and the air outlet. The airflow heated by the hot air blower enters the air inlet, passes through the drying chamber from top to bottom from the air inlet, and enters the air outlet, and then returns to the hot air blower from the air outlet. The heated airflow can perform hot air drying on the products in the drying chamber.

[0021] The rotary conveyor line has a feeding section, an intermediate section and a discharging section. The feeding section is located between the inlet of the forming machine and the drying device, the intermediate section corresponds to the drying chamber, and the discharging section is located between the outlet of the drying device and the forming machine. A carrier is movably installed on the rotary conveyor line. The forming machine adsorbs the pulp onto the net to dehydrate the pulp and form a wet embryo. The carrier on the feeding section is connected to the wet embryo, and the carrier moves from the feeding section to the intermediate section. The wet embryo on the carrier is dried to a certain extent in the drying chamber to obtain a dried semi-finished product. After the wet embryo is dried by the drying device, the fiber bonding strength of the product is greatly improved. Even if it is dried by vacuum extraction, the fine fibers in the product will not be sucked into the exhaust holes of the mold to form blockage and coking. The impact on the mold is small, which can extend the service life of the mold.

[0022] The discharging section is provided with a flipping structure, and the flipping structure cooperates with the carrier. When the carrier runs to the flipping structure, the carrier will flip and complete the unloading. The carrier that has unloaded the material moves from the discharging section to the feeding section to continue to receive the wet embryos produced by the molding machine and put them into the drying chamber for drying. The wet embryos can be dried continuously, which improves the drying efficiency. Moreover, after the wet embryos are dried by the drying device, the time required for hot pressing at the shaping machine is shorter, which further improves the production efficiency.

[0023] A first conveying mechanism is connected between the discharging section and the wetting device, and the first conveying mechanism is used to convey the dried semi-finished product to the wetting station. The carrier turns over at the turning structure and unloads to the first conveying mechanism, and the dried semi-finished product is conveyed to the wetting station for wetting by the first conveying mechanism. A second conveying mechanism is connected between the wetting device and the shaping machine, and the second conveying mechanism conveys the semi-finished product after wetting to the shaping station of the shaping machine for hot pressing and shaping. After the wet embryo is dried by the drying device, the surface is dry and rough. The surface is wetted by the wetting device and then enters the shaping machine for hot pressing and shaping, which can effectively improve the surface finish of the product.

[0024] The wet embryos obtained by the molding machine enter the drying chamber through the feeding section on the carrier for drying. The dried semi-finished products are conveyed to the wetting station through the first conveying mechanism. The second conveying mechanism conveys the wetting semi-finished products to the shaping station of the shaping machine for hot pressing and shaping. In a series of processes from pulp to finished products, all operations are completed by machines in coordination with mechanical structures. There is no need for manual or robot collaboration, which reduces the uncertainty in manual operations and ensures stable and efficient production. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A front view of a production system for pulp molded products of the present invention;

[0026] Figure 2 It is a schematic diagram of the interior of a drying device of a molding machine of a production system of a pulp molding product of the present invention;

[0027] Figure 3 A front view of a carrier of a production system for pulp molded products of the present invention;

[0028] Figure 4 It is a partial schematic diagram of a discharging section of a production system for pulp molding products of the present invention;

[0029] Figure 5 A partial schematic diagram of a feeding section of a production system for pulp molded products of the present invention;

[0030] Figure 6 It is a schematic diagram of two docking states of the transfer conveyor belt of the setting machine of the production system of pulp molding products of the present invention;

[0031] Figure 7 A top view of a second conveying mechanism of a molding machine of a production system for pulp molded products of the present invention;

[0032] Figure 8 A side view of a hot air blower of a setting machine of a production system for pulp molded products of the present invention;

[0033] Fig. 9A side view of a molding machine of a molding machine of a production system for pulp molded products of the present invention.

[0034] In the figure: 1-forming machine, 2-drying device, 3-setting machine, 4-air inlet, 5-air outlet, 6-middle section, 7-ventilation plate, 8-carrier, 9-feeding section, 10-discharging section, 11-blocking rod, 12-turning structure, 13-connecting track, 14-first conveying mechanism, 15-transfer conveyor belt, 16-material storage and transportation mechanism, 17-telescopic rod, 18-wetting device, 19-semi-finished product lane separation device, 20-semi-finished product positioning device, 21-setting machine feeding mechanism, 22-induced draft fan, 23-dehumidification air outlet, 24-combustion port, 25-furnace, 26-second conveying mechanism, 27-feeding and discharging bracket. DETAILED DESCRIPTION

[0035] The specific implementation of the production system of pulp molded products of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] A specific embodiment of a production system of a pulp molded product of the present invention is as follows Figures 1 to 9 As shown, the production system of pulp molding products includes a molding machine 1, a drying device 2, a wetting device 18 and a setting machine 3; the molding machine 1 is a strand molding machine, which can perform continuous production and is used to adsorb pulp onto a net to dehydrate the pulp and form a wet embryo; the drying device 2 is arranged on one side of the molding machine 1, and the wetting device 18 and the setting machine 3 are arranged on the other side of the molding machine 1. The drying device 2 includes a main housing and a rotary conveyor line, an air inlet 4 is arranged on the upper side of the main housing, an air outlet 5 is arranged on the lower side of the main housing, and the interior of the main housing is between the air inlet 4 and the air outlet 5 to form a drying chamber; the main housing is installed on the outside There is a hot air blower, and the hot air blower is connected to the air inlet 4 and the air outlet 5. The hot air blower includes an induced draft fan 22, a dehumidification port 23, a combustion port 24 and a furnace 25. The furnace 25 is connected to the air inlet 4, and the induced draft fan 22 is connected to the air outlet 5. The air enters the induced draft fan 22 and is heated at the combustion port 24. The heated air enters the air inlet 4 through the furnace 25. The heated air passes through the ventilation plate 5 from top to bottom in the air inlet 4 to perform hot air drying on the products in the drying chamber, and returns to the induced draft fan 22 through the air outlet 5. A hot air duct is arranged between the air inlet 4 and the molding machine 1, and the heated gas can enter the molding machine 1 through the hot air duct.

[0037] A feed and discharge bracket 27 is arranged between the main housing of the molding machine 1 and the drying device 2. The rotary conveyor line has a feed section 9, an intermediate section 6 and a discharge section 10. The feed section 9 and the discharge section 10 are arranged on the feed and discharge bracket 27, and the feed section 9 is located between the molding machine 1 and the inlet of the drying device 2. The intermediate section 6 is arranged corresponding to the drying chamber, and the discharge section 10 is located between the outlet of the drying device 2 and the molding machine 1; the intermediate section 6 is distributed in a zigzag shape in the drying chamber, and a ventilation plate is arranged between the intermediate sections 6. 7. There are uniform openings on the ventilation plate 7, which can allow air flow to pass evenly; the rotary conveyor line is a chain-type rotary conveyor line, which includes two conveyor chains arranged in parallel and spaced apart, and a sprocket for driving the conveyor chains, and a plurality of carriers 8 are hung between the two conveyor chains, and the carriers 8 include ventilation plates, and end shafts are arranged on both sides of the ventilation plates, and the axes of the end shafts are located above the axes of the ventilation plates, and the end shafts on both sides are rotatably connected with the corresponding conveyor chains, and the ventilation plates are gap-matched with the two conveyor chains.

[0038] A flipping structure 12 is provided at the position of the feed and discharge bracket 27 corresponding to the discharge section 10, and the flipping structure 12 includes a first guide portion and a second guide portion that are smoothly connected, the first guide portion is arranged obliquely upward along the discharge direction of the discharge section 10, and the second guide portion is arranged obliquely downward along the discharge direction of the discharge section 10, and there is a highest point between the first guide portion and the second guide portion; a baffle rod 11 is provided on the side of the ventilation plate close to the drying device 2, and the baffle rod 11 is slidably matched with the first guide portion and the second guide portion to cause the carrier 8 to flip forward when the baffle rod 11 passes through the first guide portion.

[0039] The carrier 9 receives the wet embryos produced by the molding machine 1 at the feeding section 10, and moves to the middle section 6 through the feeding section 10. The heated air passes through the ventilation plate 7 from top to bottom in the air inlet 4 to perform hot air drying on the wet embryos on the middle section 6 to obtain the dried semi-finished products. The first conveying mechanism 14 is connected between the discharge section 10 and the spraying device 18 through the connecting track 13. When the carrier 8 is turned over by the turning structure 12, the dried semi-finished products slide from the connecting track 13 to the first conveying mechanism 14. The carrier 9 after unloading moves from the discharge section 10 to the feeding section 9 to continue to receive the wet embryos produced by the molding machine 1 and enter the drying chamber for drying. The wet embryos can be dried continuously, which improves the drying efficiency. After the wet embryos are dried by the drying device, the time required for hot pressing molding at the setting machine 3 is shorter, which further improves the production efficiency.

[0040] A transfer conveyor belt 15 and a material storage and transportation mechanism 16 are provided at the tail end of the first conveying mechanism 14. The discharging section 10 is connected to the first conveying mechanism 14 through a connecting track 13. The discharging section 10 is located obliquely above the first conveying mechanism 14, ensuring that the semi-finished products on the discharging section 10 can slide to the first conveying mechanism 14 through the connecting track 9; the first conveying mechanism 14 is rotatably connected to one end of the transfer conveyor belt 15, and a telescopic rod 17 is connected under the transfer conveyor belt 15, and the telescopic rod 17 is rotatably connected to the transfer conveyor belt 15, and the material storage and transportation mechanism 16 is vertically arranged with the transfer conveyor belt 15 in the horizontal direction, and the material storage and transportation mechanism 16 is arranged below the transfer conveyor belt 15.

[0041] When the transfer conveyor belt 15 has a first docking state and a second docking state, when the telescopic rod 17 is extended, the transfer conveyor belt 15 is in the first docking state, the rotating conveyor belt 15 rises and horizontally connects with the spraying device 18, and the path between the first conveying mechanism 14 and the spraying device 18 is connected; when the telescopic rod 17 is retracted, the transfer conveyor belt 15 is in the second docking state, and the transfer conveyor belt 15 moves downward to the corresponding position above the storage and transportation mechanism 16. Under normal circumstances, the telescopic rod 17 is in the extended state, and the semi-finished products after drying are directly transferred to the spraying device 18 through the transfer conveyor belt 15; when the subsequent production line is blocked, the telescopic rod 17 is retracted, and the semi-finished products after drying are transferred to the storage and transportation mechanism 16 through the transfer conveyor belt 15.

[0042] When the dried semi-finished product is conveyed to the wetting station, the wetting device 18 will wet the surface of the dried semi-finished product, and then convey it to the shaping station through the second conveying mechanism 26. The second conveying mechanism 26 is provided with a semi-finished product dividing device 19, a semi-finished product positioning device 20 and a shaping machine feeding mechanism 21. After being divided and positioned by the semi-finished product dividing device 19 and the semi-finished product positioning device 20, they are arranged regularly and neatly at the shaping machine feeding position. The shaping machine feeding mechanism 21 sends the semi-finished product to the lower mold position of the shaping machine 3, and the final product is obtained after hot pressing and shaping.

[0043] The wet embryo is dried by the drying device 2 before hot pressing and shaping; after the wet embryo is dried by the drying device 2, the fiber bonding strength of the product is greatly improved, and even if it is dried by vacuum extraction, the fine fibers in the product will not be sucked into the exhaust holes of the mold to cause blockage and coking, and the impact on the mold is small, which can extend the service life of the mold.

[0044] After the wet embryo is dried by the drying device 2, the surface is dry and rough. The wet embryo is sprayed with a wet device and then enters the shaping machine for hot pressing and forming, which can effectively improve the surface finish of the product.

[0045] In this embodiment, the connecting rail 13 is connected to two wetting devices 18 through the first conveying mechanism 14, and the wetting devices 18 are connected to two molding machines 3 through two second conveying mechanisms 26. One molding machine 1 is connected to one drying device 2, and one drying device 2 is connected to four molding machines 3, which greatly improves the production line capacity.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A production system for pulp molded products, characterized in that: The invention comprises a forming machine, a drying device, a wetting device and a setting machine, wherein the drying device is arranged on one side of the forming machine, and the wetting device and the setting machine are arranged on the other side of the forming machine; the drying device comprises a main casing and a rotary conveyor line, an air inlet is arranged on the upper side of the interior of the main casing, an air outlet is arranged on the lower side of the interior of the main casing, and a drying chamber is formed between the air inlet and the air outlet in the interior of the main casing; a hot air blower is installed on the outside of the main casing, and the hot air blower is connected with the air inlet and the air outlet; the rotary conveyor line comprises a feeding section, an intermediate section and a discharging section, and the feeding section is located at the inlet of the forming machine and the drying device The middle section is arranged corresponding to the drying chamber, and the discharging section is located between the outlet of the drying device and the molding machine; a carrier is movably installed on the rotary conveyor line, and the discharging section is provided with a flipping structure, and the flipping structure cooperates with the carrier so that when the carrier runs to the flipping structure, the carrier flips to complete the unloading; a first conveying mechanism is connected between the discharging section and the spraying device, and the first conveying mechanism is used to convey the semi-finished product after drying to the spraying station; a second conveying mechanism is connected between the spraying device and the molding machine, and the second conveying mechanism is used to convey the semi-finished product after spraying to the molding station; The carrier includes a ventilation plate and end shafts arranged at both ends of the ventilation plate, the axis of the end shaft is parallel to the plate surface of the ventilation plate and is located above the ventilation plate, the end shaft is rotatably connected to the rotary conveyor line on the corresponding side, and the ventilation plate is gap-matched with the two rotary conveyor lines; A feeding and discharging bracket is also provided between the molding machine and the drying device, the feeding section and the discharging section are both provided on the feeding and discharging bracket, and the flip structure is installed at a position of the feeding and discharging bracket corresponding to the discharging section; The flip structure comprises a first guide portion and a second guide portion which are smoothly connected, the first guide portion being arranged obliquely upward along the discharging direction of the discharging section, and the second guide portion being arranged obliquely downward along the discharging direction of the discharging section; A blocking rod is provided on one side of the ventilation plate close to the drying device, and the blocking rod is slidably matched with the first guide portion and the second guide portion so as to cause the carrier to flip forward when the blocking rod passes through the first guide portion; A transfer conveyor belt is connected to the end of the first conveying mechanism, and a material storage and transportation mechanism is arranged below the transfer conveyor belt. The transfer conveyor belt has a first docking state and a second docking state. When the transfer conveyor is in the first docking state, the transfer conveyor belt rises to open the path between the first conveying mechanism and the wetting device. When the transfer conveyor belt is in the second docking state, the transfer conveyor belt descends to open the path between the first conveying mechanism and the material storage and transportation mechanism.

2. The production system of pulp molded products according to claim 1, characterized in that: The rotary conveyor line is a chain-type rotary conveyor line, which includes two conveyor chains arranged in parallel and at intervals, and a sprocket for driving the conveyor chains, and the carrier is hung between the two conveyor chains.

3. The production system of pulp molded products according to claim 1, characterized in that: The hot air blower is installed on a side of the drying device away from the molding machine, and a hot air pipe is arranged between the air inlet duct and the molding machine.

4. The production system of pulp molded products according to claim 1, characterized in that: The hot air blower comprises an induced draft fan and a furnace, the induced draft fan is connected to the air outlet, the furnace is connected to the air inlet, a return air duct is connected between the induced draft fan and the furnace, and a moisture exhaust port is connected to the return air duct.

5. The production system of pulp molded products according to claim 1, characterized in that: There are at least two setting machines, and the second conveying mechanism is respectively connected between the spraying device and at least two of the setting machines.

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