Method and apparatus for storing and handling polyurethane products

Abstract

The application discloses a kind of polyurethane product storage operation methods, comprising the following steps: S1, polyurethane continuous foaming is formed to conveying line, and gantry cutting machine is cut to length to polyurethane and forms the polyurethane product of specified length size;S2, conveying line transports product to weighing module, and weighing module obtains the weight information of product, and with ink-jet printer signal interaction, weight information is transferred to ink-jet printer;S3, conveying line transports product to ink-jet printer, and ink-jet printer sprays product information to product place.The application adopts continuous equipment process, so that polyurethane product is cut after output, quality inspection, transportation, storage to last warehouse outstack packing work, full-automatic processing, and output efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of polyurethane product production and relates to a polyurethane product storage and operation method and equipment. BACKGROUND

[0002] Polyurethane materials are widely used in the fields of home furnishing, building, daily necessities, transportation and home appliances.

[0003] Based on the existing Chinese invention patent CN113927813B polyurethane plate continuous foaming production method, the polyurethane product produced is suitable for low-temperature insulation plates of liquefied gas storage tanks and ships, and the temperature is suitable for 80 DEG C to -250 DEG C, and the product has excellent stability, but in order to make the product have corresponding quality, the product needs a certain process for quality control from production to packaging finished product, for example, a certain temperature needs to be ensured within a certain time for polyurethane curing to ensure the quality of the finished product and avoid the product from being denatured when the product is not stable in nature after production.

[0004] The existing polyurethane product has few systematic quality control processes from production to finished product packaging to maintain product stability and ensure finished product quality, and no corresponding quality control process is made for the factors affecting the nature of the polyurethane product (such as temperature), thereby causing the problem of low yield of finished products. SUMMARY

[0005] The application provides a polyurethane product storage and operation method and equipment to overcome the deficiencies of the prior art.

[0006] In order to achieve the above purpose, the application adopts the following technical scheme: a polyurethane product storage and operation method, comprising the following steps:

[0007] S1, polyurethane continuous foaming is formed to a conveying line, and a gantry cutting machine cuts the polyurethane to a specified length to form a polyurethane product with a specified length size;

[0008] S2, the conveying line conveys the product to a weighing module, the weighing module obtains weight information of the product, and interacts with a code jet signal to transmit the weight information to the code jet;

[0009] S3, the conveying line conveys the product to the code jet, and the code jet sprays product information to the product;

[0010] S4, the conveying line conveys the product to a waiting station, the waiting station is provided with a linkage quick door, the linkage quick door is opened when the waiting station has products, and the linkage quick door is closed after the products leave; the waiting station is provided with a product size detection unit, the products meeting the size requirements are conveyed to the first conveyor, the first conveyor conveys the products to the storage inlet of the stereoscopic warehouse, and the products enter the stereoscopic warehouse from the storage inlet;

[0011] S5, the roller line in the stereoscopic warehouse conveys the products to the storage outlet of the stereoscopic warehouse, and the second conveyor conveys the products from the storage outlet of the stereoscopic warehouse to the discharge channel;

[0012] S6, the gantry stacker takes down the pallet from the pallet conveying line and places it on the stacking station, the gantry stacker calculates the product stacking quantity according to the product height and the pallet height, the gantry stacker takes down the products from the discharge channel and stacks them on the pallet, and the stacking station transfers the pallet with the set quantity of products to the offline station.

[0013] Further, in the processes of steps S4 and S5, a temperature control unit is arranged, which controls the temperature and humidity of the area where the stereoscopic warehouse is located within a set range.

[0014] Further, before step S2, a differential separation unit is arranged on the conveying line, which includes two groups of transmission belts that are connected in front and back, and the running speed of the transmission belt on the rear side in the transmission direction is higher than that of the transmission belt on the front side.

[0015] Further, in step S4, an emergency offline unit is further arranged on the conveying line, the first conveyor conveys special products to the emergency offline unit, the special products include products with abnormal size and surface, and the emergency offline unit is also used for sampling.

[0016] The application discloses a polyurethane product storage and operation equipment adopting the polyurethane product storage and operation method, and comprises an entering warehouse production line, a stereoscopic warehouse and an exiting warehouse production line.

[0017] Further, the weighing module comprises a transmission platform arranged on the conveying line and a weighing device used for obtaining the weight of the transmission platform.

[0018] Further, the product size detection unit comprises photoelectric sensors arranged on both sides of the conveying line.

[0019] Further, the linkage quick door comprises a baffle and an electric sliding rail used for driving the baffle to ascend and descend.

[0020] Further, the outer wall of the stereoscopic warehouse is paved with a heat preservation material.

[0021] Further, the discharging channel, the tray conveying line, the stacking station and the offline station are all provided with drum lines.

[0022] In conclusion, the application has the following advantages:

[0023] 1) The application adopts a continuous equipment flow, so that the polyurethane product can be automatically processed from cutting, quality inspection, transportation and storage to the final exiting warehouse stacking and packaging, and the production efficiency is effectively improved.

[0024] 2) The automatic flow and the orderly connection of the units make the polyurethane product stable in the circulation process, so that the product can maintain an excellent property and the quality after production is ensured.

[0025] 3) The quality inspection unit adopting the weighing and size detection cooperates with the emergency offline unit, so that the defective products can be effectively removed and the yield is ensured.

[0026] 4) The use of the stereoscopic warehouse in the process for temporary storage of products, increasing the throughput capacity of the production line in the process of output to the warehouse packing, greatly enhancing the production capacity, achieving high efficiency production.

[0027] 5) The use of the temperature control unit to maintain the appropriate temperature of the products to ensure the stability of the product properties, and combined with the large capacity of the stereoscopic warehouse, the semi-closed space of the stereoscopic warehouse is more suitable for temperature control.

[0028] 6) The setting of multiple storage channels in the stereoscopic warehouse not only realizes the large capacity storage and temperature control of the products, but also has the classification function of different categories of products, so that different categories of products can be selectively stored in different storage channels. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a schematic diagram of the polyurethane product storage and operation equipment of the present application.

[0030] Figure 2 It is a flowchart of the polyurethane product storage and operation method of the present application.

[0031] Identified in the figure: 1, conveying line; 11, gantry cutting machine; 12, differential separation unit; 13, weighing module; 14, code printer; 15, product size detection unit; 16, linkage quick closing door; 17, first conveyor; 18, emergency offline unit; 2, stereoscopic warehouse; 21, warehouse inlet; 22, warehouse outlet; 23, temperature control unit; 31, second conveyor; 32, discharge channel; 33, stacking station; 34, pallet conveying line; 35, gantry stacker; 36, offline station. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in detail below with specific reference to specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the disclosure of the present specification. The present application can also be implemented or applied by different specific embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0033] It should be noted that the diagrams provided in the following examples only illustrate the basic concept of the present application in a schematic manner, and the diagrams only show the components related to the present application, not the number, shape and size of the components when actually implemented. The actual implementation of each component can be randomly changed, and the component layout pattern can be more complex.

[0034] All the directionality indications (such as up, down, left, right, front, back, transverse, longitudinal, and the like) in the embodiments of the present application are only used to explain the relative positional relationship and movement condition between components in a certain specific posture, and if the specific posture changes, the directionality indications will also change accordingly.

[0035] Due to installation errors and the like, the parallel relationship referred to in the embodiments of the present application may actually be an approximate parallel relationship, and the vertical relationship may actually be an approximate vertical relationship.

[0036] As shown in Figure 1 A polyurethane product storage and operation equipment includes a gantry cutting machine 11, a conveying line 1, a manual inspection unit, an emergency offline unit 18, a differential separation unit 12, a weighing module 13, a product size detection unit 15, a code jet 14, a linkage quick door 16, a first conveyor 17, a three-dimensional warehouse 2, a temperature control unit 23, a second conveyor 31, a discharge channel 32, a pallet conveying line 34, a stacking station 33, an offline station 36, and a gantry stacker 35, which are used to cut, inspect, transport, store, stack, and discharge standard blocks of continuously foamed and molded polyurethane through a series of links, so as to realize automatic output.

[0037] The gantry cutting machine 11, the manual inspection unit, the differential separation unit 12, the weighing module 13, the product size detection unit 15, the code jet 14, the linkage quick door 16, the first conveyor 17, and the emergency offline unit 18 are sequentially arranged along the conveying direction of the conveying line 1. The head end of the conveying line 1 is provided with a polyurethane product production device. After mixing MDI and POL raw materials, the mixture is poured on a glass fiber felt or cloth to continuously foam and form. The continuously foamed polyurethane enters from the head end of the conveying line 1 and is transported along the conveying line 1. For the specific foaming and forming process, refer to the polyurethane plate continuous foaming production method of Chinese invention patent CN113927813B.

[0038] During the transmission process, the gantry cutting machine 11 cuts the polyurethane downward on the upper side of the conveying line 1, and cuts the polyurethane into polyurethane foam blocks of uniform length in the conveying direction.

[0039] The manual inspection unit is arranged on the conveying line 1 and located at the rear side of the gantry cutting machine 11. A space is reserved for the forklift to load and unload goods, which facilitates manual inspection of the quality of the produced polyurethane foam blocks and facilitates temporary loading and unloading.

[0040] The polyurethane foam blocks are conveyed by the conveying line 1 to the weighing module 13, and pass through the differential separation unit 12 during the conveying process. The differential separation unit 12 includes two transmission belts which are butted together front to back. The transmission speed of the transmission belt on the rear side in the transmission direction is greater than that of the transmission belt on the front side. Therefore, when the foam blocks are transferred from the transmission belt on the front side to the transmission belt on the rear side, the foam blocks are accelerated, and the distance between the foam blocks and the next foam block is pulled apart, so that the foam blocks do not crowd and stack each other, and the accuracy of the subsequent quality inspection process is not affected.

[0041] The weighing module 13 includes a separate transmission platform arranged on the conveying line 1. A weighing device, such as an electronic scale, is arranged below the transmission platform. When the foam blocks are transported to the transmission platform, the weighing device generates an electrical signal corresponding to the weight of the foam blocks.

[0042] The product size detection unit 15 includes photoelectric sensors arranged on both sides of the conveying line 1. When the foam blocks pass through, if the foam blocks block the light path of the photoelectric sensors, it indicates that the height or thickness of the foam blocks is too large and does not meet the specified specifications. Then, the photoelectric sensors generate an electrical signal corresponding to the fact that the foam blocks exceed the height limit.

[0043] The controller is electrically connected with the weighing device and the photoelectric sensors, and is configured to receive and analyze the electrical signals generated by the weighing device and the photoelectric sensors, and output instructions.

[0044] The inkjet printer 14 is arranged on one side of the conveying line 1. The inkjet printer 14 is electrically connected with the controller. The controller analyzes the electrical signal transmitted by the weighing device to generate the weight information of the foam blocks, and sends a code spraying instruction to the inkjet printer 14. The inkjet printer 14 sprays product information such as the weight information, date, product number, etc. on the surface of the foam blocks.

[0045] The first conveyor 17 includes a first platform, a first horizontal moving track, and a first lifting track. The first platform is loaded on the first lifting track to realize the lifting of the first platform in the vertical direction. The first lifting track is loaded on the first horizontal moving track to realize the horizontal movement of the first platform. One end of the first horizontal moving track is located close to the tail end of the conveying line 1, so that when the first platform moves to the end, the first platform is adjusted to the same height as the conveying line 1 through the first lifting track, the conveying plane of the conveying line 1 is butted with the plane of the first platform, and the foam blocks can be smoothly moved from the conveying line 1 to the first platform. The first platform is also provided with a roller for driving the movement of the foam blocks on the first platform. The transmission direction of the roller of the first platform is parallel to the conveying line 1.

[0046] The tail end of the conveying line 1 is provided with a waiting station, the linkage quick door 16 is arranged at the waiting station to block the foam blocks at the waiting station, when the first platform is docked with the conveying line 1, the linkage quick door 16 is opened upward to make the foam blocks conveyed to the first platform, thereby controlling the rhythm of the foam blocks conveyed to the first platform, and avoiding the foam blocks from falling empty in the case that the first platform is not docked with the conveying line 1, wherein the linkage quick door 16 comprises a baffle and an electric sliding rail for controlling the lifting of the baffle.

[0047] The other side of the first transverse rail relative to the conveying line 1 is also provided with an emergency offline unit 18, the emergency offline unit 18 comprises a transmission plane and can be docked with the first platform, when the weight or size of the foam blocks on the first platform does not meet the limit value, or the surface of the foam blocks is abnormal, the first platform will convey the foam blocks to the emergency offline unit 18, the emergency offline unit can also be used for daily sampling to offline the products.

[0048] The three-dimensional warehouse 2 comprises a plurality of storage channels, the head and tail ends of the storage channels form open warehouse inlet 21 and warehouse outlet 22, and in the cross-sectional view perpendicular to the length direction of the storage channels, each of the storage channels is arranged in a vertical and horizontal rectangular array; the other end of the first transverse rail is arranged close to the warehouse inlet 21 of the three-dimensional warehouse 2, preferably, in the embodiment, the conveying line 1 is arranged parallel to the storage channels, and the first transverse rail is perpendicular to the conveying line 1 and the storage channels, thereby when the first platform is adjusted in the horizontal and vertical positions on the first transverse rail and the first lifting rail, the first platform can correspond to each of the warehouse inlets 21, that is, the plane of the first platform can be docked with the bottom surface of each storage channel, so that the foam blocks can enter any of the storage channels according to actual needs, the arrangement of multiple storage channels not only realizes large-capacity storage of polyurethane foam blocks, but also classifies different specifications of foam blocks in production, so that different specifications of foam blocks enter different channels to avoid mixing, in addition, the parallel arrangement of the conveying line 1 and the storage channels optimizes the arrangement structure of the production line, which can effectively reduce the floor space occupied by the whole equipment and improve the space utilization.

[0049] The bottom surface of the storage channel is provided with a roller line in the length direction, which is used for conveying the foam blocks from the warehouse inlet 21 to the warehouse outlet 22.

[0050] The second conveyor 31 comprises a second platform, a second transverse rail and a second lifting rail, the second transverse rail is perpendicular to the length direction of the storage channels, so that the second platform can correspond to each of the warehouse outlets 22 to receive the foam blocks transmitted from any of the warehouse outlets 22.

[0051] The temperature control unit 23 is used to control the temperature and humidity of the area where the first conveyor 17, the stereoscopic warehouse 2 and the second conveyor 31 are located, to ensure that the temperature and humidity in the stereoscopic warehouse 2 are constant, and to control the temperature at 20 degrees Celsius or above, so that the foam blocks can fully mature during storage in the stereoscopic warehouse, thereby ensuring the stability of the polyurethane product. In the present embodiment, the temperature control unit 23 preferably uses air circulation temperature control, and in order to enhance the heat preservation effect of the stereoscopic warehouse 2, the outer wall of the stereoscopic warehouse 2 is also paved with heat preservation materials, including but not limited to sandwich panels, foam and the like.

[0052] The discharge channel 32 is arranged on the other side of the second conveyor 31 relative to the stereoscopic warehouse 2, and the foam blocks transported out of the stereoscopic warehouse 2 are conveyed to the discharge channel 32 under the conveying of the second platform.

[0053] The gantry stacker 35 is arranged above the tray conveying line 34, the stacking station 33 and the discharge channel 32, and its working range covers the range of the three, the gantry stacker 35 picks up a tray from the tray conveying line 34 and places it on the stacking station 33, then grabs the foam blocks on the discharge channel 32 and places them on the tray and stacks several blocks. The gantry stacker 35 is integrated with a control system for controlling the action of the gantry stacker 35, and according to the height of the current tray, the height of the foam blocks and the set height of the required stacking, the number of foam blocks required to be stacked on the tray is calculated accordingly to perform automatic stacking work.

[0054] In the present embodiment, the discharge channel 32 is provided with two discharge channels, which improves the continuous working nature of the second conveyor 31 and improves the efficiency of the warehouse.

[0055] The discharge channel 32 and the tray conveying line 34 are each provided with a roller line for adjusting or conveying the position of the workpiece.

[0056] The offline station 36 is arranged below the stacking station 33, and the stacking station 33 and the offline station 36 are each provided with a roller line, when the tray on the stacking station 33 is stacked with a set number of foam blocks, the driving roller belt moves the tray and the foam blocks to the offline station 36.

[0057] The present embodiment also includes a method based on the above-mentioned polyurethane product storage and operation equipment, referring to Figure 2 The method comprises the following steps:

[0058] S1, polyurethane continuous foaming and molding to a conveying line, a gantry cutting machine cuts the polyurethane to a specified length to form a polyurethane product with a specified length;

[0059] S2, the conveying line conveys the product to the weighing module, the weighing module obtains the weight information of the product, and interacts with the inkjet signal, and transmits the weight information to the inkjet;

[0060] S3, the conveying line conveys the product to the inkjet, and the inkjet sprays the product information to the product;

[0061] S4, the conveying line conveys the product to the waiting station, the waiting station is provided with a linkage quick closing door, the linkage quick closing door is opened when the waiting station has the product, and the linkage quick closing door is closed after the product leaves; the waiting station is provided with a product size detection unit, and the product meeting the size requirement is conveyed to the first conveyor, the first conveyor conveys the product to the storage entrance of the stereoscopic warehouse, and the product enters the stereoscopic warehouse from the storage entrance;

[0062] S5, the roller line in the stereoscopic warehouse conveys the product to the storage exit of the stereoscopic warehouse, and the second conveyor conveys the product from the storage exit of the stereoscopic warehouse to the discharge channel;

[0063] S6, the gantry stacker takes down the tray from the tray conveying line and places it on the stacking station, the gantry stacker calculates the product stacking quantity according to the product height and the tray height, the gantry stacker takes down the product from the discharge channel and stacks it on the tray, and the stacking station transfers the tray with the set quantity of products to the offline station.

[0064] In the process of steps S4 and S5, a temperature control unit is arranged, which controls the temperature and humidity of the area where the stereoscopic warehouse is located within a set range.

[0065] Before step S2, a differential separation unit is arranged on the conveying line, which includes two groups of transmission belts in front and back connection, and the running speed of the transmission belt on the rear side in the transmission direction is higher than that of the transmission belt on the front side.

[0066] In step S4, an emergency offline unit is further arranged on the conveying line, and the first conveyor conveys special products to the emergency offline unit, the special products including products with abnormal size and surface, and the emergency offline unit is also used for sampling.

[0067] Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor shall belong to the protection scope of the present application.

Claims

1. A method for storing and operating polyurethane products, characterized in that, A polyurethane product storage and operation device includes an inbound production line, an automated warehouse, and an outbound production line. The inbound production line includes a conveyor line and a gantry cutting machine, a weighing module, a product size detection unit, an inkjet printer, and a linkage quick-closing door arranged along the conveyor line. The first end of the conveyor line is connected to a foaming molding unit, and the last end is connected to a first conveyor, which includes a first platform, a first transverse track, and a first lifting track. The automated warehouse includes at least one storage channel, which includes an inlet and an outlet. A roller conveyor is installed on the storage channel from the inlet to the outlet. A first conveyor is located at the inlet. The outgoing production line includes a second conveyor, an outgoing channel, a pallet conveyor line, a stacking station, an unloading station, and a gantry stacker. The second conveyor is located at the outlet and includes a second platform, a second traverse track, and a second lifting track. The outgoing channel is connected to the second conveyor. The outgoing channel, pallet conveyor line, and stacking station are all located within the working range of the gantry stacker. The unloading station is connected to the stacking station. The polyurethane product storage and operation method includes the following steps: S1. Polyurethane is continuously foamed and molded to the conveyor line, and the gantry cutting machine cuts the polyurethane to a fixed length to form polyurethane products of specified length and size. S2. The conveyor line transports the product to the weighing module. The weighing module obtains the weight information of the product and interacts with the inkjet printer to transmit the weight information to the inkjet printer. S3. The conveyor line transports the products to the inkjet printer, which then prints the product information onto the product. S4. The conveyor line transports products to the waiting station. The waiting station is equipped with a quick-closing door. When there are products at the waiting station, the quick-closing door opens and closes when the products leave. The waiting station is equipped with a product size detection unit. Products that meet the size requirements will be transported to the first conveyor. The first conveyor will transport the products to the entrance of the automated warehouse. The products will enter the automated warehouse from the entrance. S5. The roller conveyor inside the automated warehouse transports the products to the warehouse outlet, and the second conveyor transports the products from the warehouse outlet to the discharge channel. S6. The gantry stacker removes the pallet from the pallet conveyor line and places it at the stacking station. The gantry stacker calculates the number of products to be stacked based on the product height and the pallet height. The gantry stacker removes the products from the discharge channel and stacks them on the pallet. The stacking station then transfers the pallet with the set number of products to the off-line station.

2. The method for storing and operating a polyurethane product according to claim 1, characterized in that, During steps S4 and S5, a temperature control unit is installed to control the temperature and humidity of the area where the automated warehouse is located within a set range.

3. The method for storing and operating a polyurethane product according to claim 1, characterized in that, Before step S2, a differential speed separation unit is provided on the conveyor line, which includes two sets of conveyor belts connected front and rear, with the rear conveyor belt running at a higher speed than the front conveyor belt in the transmission direction.

4. The method for storing and operating a polyurethane product according to claim 1, characterized in that, In step S4, an emergency removal unit is also provided on the conveyor line. The first conveyor transports special products to the emergency removal unit. Special products include products with abnormal size or surface. The emergency removal unit is also used for sampling.

5. A method for storing and operating polyurethane products according to claim 1, characterized in that, The weighing module includes a transmission platform installed on the conveyor line and a weighing device for obtaining the weight of the transmission platform.

6. A method for storing and operating polyurethane products according to claim 1, characterized in that, The product size detection unit includes photoelectric sensors located on both sides of the conveyor line.

7. A method for storing and operating polyurethane products according to claim 1, characterized in that, The linked quick-closing door includes a baffle and an electric slide rail for driving the baffle to rise and fall.

8. A method for storing and operating polyurethane products according to claim 1, characterized in that, The outer wall of the automated warehouse is covered with thermal insulation material.

9. A method for storing and operating a polyurethane product according to claim 1, characterized in that, Roller conveyors are installed on the discharge channel, the pallet conveyor line, the stacking station, and the unloading station.

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