A refrigerated container secondary foaming production system

Abstract

The application discloses a refrigerated container secondary foaming production system, comprising a secondary foaming line and a conveying device. The secondary foaming line is used for continuously operating a secondary foaming process of the refrigerated container. The secondary foaming line has a plurality of continuously arranged work stations, and the plurality of continuously arranged work stations comprise at least four continuously arranged foaming pressure maintaining work stations. The foaming pressure maintaining work station is used for a foaming pressure maintaining step in the secondary foaming process. The conveying device is arranged between each work station and is used for conveying a workpiece. The running time of the workpiece in the at least four continuously arranged foaming pressure maintaining work stations satisfies the total time required for pressure maintaining. Therefore, the production rhythm can be accelerated, and a rhythm of 3 minutes per container can be realized. Moreover, the secondary foaming capacity can be effectively improved, and the capacity of four production lines is improved from 130 containers per 10 hours to 200 containers per 10 hours, so that the production efficiency of the secondary foaming process of the refrigerated container is greatly improved.

Description

Technical Field

[0001] This application relates to the field of refrigerated containers, and more specifically to a secondary foaming production system for refrigerated containers. Background Technology

[0002] like Figure 1 As shown, a typical secondary foaming production line is a single line, consisting of a base molding station, a pressure holding station, and a top molding station arranged sequentially. The front and rear frame clamps are installed and removed at the top molding station. After the container body is moved to the top molding station, the front frame clamp, rear frame clamp, and top clamp are installed sequentially. After the clamps are tightened, polyurethane mixture is injected for foaming. To ensure the flatness of the foaming area, pressure is held at this station for 12 minutes before the clamps are removed. Due to the pressure holding time limitation, the production cycle of the secondary foaming station is 20 minutes per unit, and the capacity of a single production line is 30 units per 10 hours. Production is usually increased by increasing the number of secondary foaming production lines, such as... Figure 2 As shown, its production capacity is relatively low.

[0003] Therefore, a secondary foaming production system for refrigerated containers is needed to at least partially solve the above problems. Summary of the Invention

[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This summary section is not intended to limit the key and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, this application provides a secondary foaming production system for refrigerated containers, the secondary foaming production system for refrigerated containers comprising:

[0006] A secondary foaming line is used for the continuous operation of the secondary foaming process of refrigerated containers. The secondary foaming line has multiple consecutively arranged workstations, including at least four consecutively arranged foaming and pressure-holding workstations, which are used for the foaming and pressure-holding steps in the secondary foaming process.

[0007] A conveying device is provided between each of the workstations for conveying workpieces; wherein the running time of the workpieces at the at least four consecutively arranged foaming and pressure-holding workstations meets the total time required for pressure holding.

[0008] Optionally, the secondary foaming line includes at least two conveyor lines arranged in parallel;

[0009] The conveying device includes a first conveying device and a second conveying device. The first conveying device is connected to each of the workstations on each of the conveying lines for conveying workpieces. The second conveying device is connected to two workstations on two adjacent conveying lines for conveying workpieces. The first conveying devices on different conveying lines operate in opposite directions.

[0010] Optionally, a fixture installation station is provided upstream of the at least four consecutively arranged foaming and pressure-holding stations. The fixture installation station is used for the installation and material injection of fixtures for at least one of the top side beam, front frame, and rear frame.

[0011] Downstream of the at least four consecutively arranged foaming and pressure-holding stations is a clamp disassembly station, which is used to disassemble the clamps of at least one of the top side beam, front frame, and rear frame.

[0012] The fixture installation station and the fixture disassembly station are located on two adjacent conveyor lines and correspond to each other. The refrigerated container secondary foaming production system also includes a first mold recycling device, which is connected to the fixture installation station and the fixture disassembly station. The first mold recycling device is used to transfer the molds removed from the fixture disassembly station to the fixture installation station.

[0013] Optionally, a first mold storage area is provided between the fixture installation station and the fixture disassembly station.

[0014] Optionally, the secondary foaming line includes a first conveyor line, a second conveyor line, and a third conveyor line arranged in parallel, with the fixture installation station located on the second conveyor line and the fixture disassembly station located on the third conveyor line;

[0015] The first conveyor line is equipped with a bottom foaming station and a bottom pressure holding station located downstream of the bottom foaming station, wherein the bottom foaming station is used for the installation and injection of the clamps for the bottom side beam.

[0016] Optionally, the first end station located at the end of the first conveyor line corresponds to the fixture installation station, and the first end station is configured as a low pressure holding station and / or a waiting transfer station.

[0017] Optionally, the second end station located at the end of the second conveyor line corresponds to the bottom foaming station, and the second end station is used for disassembling the clamps of the bottom side beam;

[0018] The refrigerated container secondary foaming production system also includes a second mold recycling device, which is connected to the second end station and the bottom foaming station. The second mold recycling device is used to transfer the mold removed from the second end station to the bottom foaming station.

[0019] Optionally, a second mold storage area is provided between the second end station and the bottom foaming station.

[0020] Optionally, the number of foaming and pressure-holding stations is even.

[0021] Optionally, the refrigerated container secondary foaming production system further includes:

[0022] A preheating line, located upstream of the secondary foaming line, comprising multiple preheating stations connected by the second conveying device; and

[0023] Multiple marking lines are provided, the number of which corresponds to the number of preheating stations, and the marking lines are located upstream of the preheating stations and connected via the first conveying device.

[0024] Optionally, the refrigerated container secondary foaming production system further includes an output cleaning line, which is located downstream of the secondary foaming line and connected to the third end station at the very end of the secondary foaming line via the first conveying device.

[0025] According to the refrigerated container secondary foaming production system of this application, the secondary foaming line has at least four consecutively arranged foaming and pressure-holding stations, ensuring that the running time of the workpiece at these four consecutive stations meets the total pressure-holding requirement. This accelerates the production cycle, achieving a cycle time of 3 minutes per container. Furthermore, it effectively increases the secondary foaming capacity, raising the capacity of the four production lines from 130 units / 10 hours to 200 units / 10 hours, significantly improving the production efficiency of the secondary foaming process for refrigerated containers. Attached Figure Description

[0026] The following drawings, which are incorporated herein by reference and are used to understand this application, illustrate embodiments of the invention and their descriptions to explain the principles of the invention.

[0027] In the attached image:

[0028] Figure 1 A process layout diagram of a current technology for secondary foaming production systems of refrigerated containers.

[0029] Figure 2 for Figure 1 The side view shown is of a secondary foaming production system for refrigerated containers.

[0030] Figure 3 This is a process layout diagram of the secondary foaming production system for refrigerated containers according to this application;

[0031] Figure 4For the top foaming fixture of the secondary foaming production system for refrigerated containers according to this application;

[0032] Figure 5 For the bottom foaming fixture of the secondary foaming production system for refrigerated containers according to this application;

[0033] Figure 6 This is a side view schematic diagram of the secondary foaming production system for refrigerated containers according to this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1: Bottom foaming station

[0036] 2: Bottom pressure holding station

[0037] 3: Fixture installation station

[0038] 4: Foaming and Pressure Holding Station

[0039] 5: Fixture disassembly station

[0040] 6: First mold temporary storage area

[0041] 7: Horizontal movement chain plate

[0042] 8: Box

[0043] 11: Front frame clamp hoist

[0044] 12: Front frame clamping boom

[0045] 13: Front frame top pressure cylinder

[0046] 14: Front frame clamping die

[0047] 15: Front frame fixture body

[0048] 21: Rear frame clamp hoist

[0049] 22: Rear frame clamping boom

[0050] 23: Rear frame top pressure cylinder

[0051] 24: Rear frame clamping top mold

[0052] 25: Rear frame clamp body

[0053] 31: Secondary foaming fixture

[0054] 32: Grip gripping device

[0055] 33: Track beam

[0056] 34: Workpiece buffer area Detailed Implementation

[0057] The following description provides numerous specific details to offer a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with this application.

[0058] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0059] The ordinal numbers such as “first” and “second” used in this application are merely identifiers and have no other meaning, such as a specific order. Furthermore, for example, the term “first component” does not imply the existence of a “second component,” and the term “second component” does not imply the existence of a “first component.” It should be noted that the terms “upper,” “lower,” “front,” “back,” “left,” “right,” “inner,” “outer,” and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0060] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings.

[0061] and Figure 1 , Figure 2 The existing technology shown is different, such as Figure 3 As shown, this application discloses a secondary foaming production system for refrigerated containers, which includes a secondary foaming line and a conveying device.

[0062] The secondary foaming line is used for the secondary foaming process of continuously operating refrigerated containers. The secondary foaming line has multiple consecutively arranged stations, including at least four consecutively arranged foaming and pressure-holding stations 4. The foaming and pressure-holding stations 4 are used for the foaming and pressure-holding steps in the secondary foaming process.

[0063] Conveying devices are installed between each workstation to transport workpieces.

[0064] Among them, the total time required for the workpiece to meet the pressure holding requirement is the running time of at least four consecutively set foaming and pressure holding stations 4.

[0065] According to the refrigerated container secondary foaming production system of this application, the secondary foaming line has at least four consecutively arranged foaming and pressure-holding stations 4, ensuring that the total time required for pressure holding is met during the operation of the workpiece at the at least four consecutively arranged foaming and pressure-holding stations 4. This accelerates the production cycle, achieving a cycle time of 3 minutes per container. Furthermore, it effectively increases the secondary foaming capacity, raising the capacity of the four production lines from 130 units / 10 hours to 200 units / 10 hours, significantly improving the production efficiency of the secondary foaming process for refrigerated containers.

[0066] Specifically, the refrigerated container secondary foaming production system includes processes such as marking, preheating, secondary foaming, cleaning, and labeling. This corresponds to multiple marking lines, preheating lines, secondary foaming lines, and output cleaning lines.

[0067] The conveying system includes a first conveying device and a second conveying device. The first conveying device is connected to each station on each conveyor line for conveying workpieces. The first conveying device is mostly a translation device. The second conveying device is connected to two stations on two adjacent conveyor lines for conveying workpieces. The second conveying device is mostly a lateral movement device. The first conveying devices on different conveyor lines run in opposite directions.

[0068] The marking process takes place in the marking booth. The marking line is located upstream of the preheating line and is connected via the first conveyor device.

[0069] The preheating process takes place in the drying oven. The preheating line is located upstream of the secondary foaming line and includes multiple preheating stations connected by a second conveyor. The marking lines are located upstream of the preheating stations, and the number of marking lines corresponds to the number of preheating stations.

[0070] The secondary foaming process is carried out in a secondary foaming chamber. In one embodiment, the secondary foaming line includes at least two conveyor lines arranged in parallel. The secondary foaming line has multiple consecutively arranged workstations, including a fixture installation workstation 3, at least four consecutively arranged foaming and pressure holding workstations 4, and a fixture disassembly workstation 5. Preferably, the number of foaming and pressure holding workstations 4 is even. The fixture installation workstation 3 and the fixture disassembly workstation 5 are located on two adjacent conveyor lines and correspond to each other.

[0071] The fixture installation station 3 is located upstream of at least four consecutively arranged foaming and pressure-holding stations 4. The fixture installation station 3 is used for the installation and material injection of fixtures for at least one of the top side beam, front frame, and rear frame. The fixture disassembly station 5 is located downstream of the at least four consecutively arranged foaming and pressure-holding stations 4. The fixture disassembly station 5 is used for the disassembly of fixtures for at least one of the top side beam, front frame, and rear frame.

[0072] like Figure 4 , Figure 5As shown, the front frame clamp includes a front frame pressing cylinder 13, a front frame clamp boom 12, a front frame clamp hoist 11, a front frame clamp pressing mold 14, and a front frame clamp body 15.

[0073] The rear frame clamp includes a rear frame top pressing cylinder 23, a rear frame clamp boom 22, a rear frame clamp hoist 21, a rear frame clamp top pressing mold 24, and a rear frame clamp body 25.

[0074] The refrigerated container secondary foaming production system also includes a first mold recycling device. The first mold recycling device is connected to the fixture installation station 3 and the fixture disassembly station 5. The first mold recycling device is used to transfer the molds removed from the fixture disassembly station 5 to the fixture installation station 3. In one embodiment, the first mold recycling device includes an upper rail and a fixture gripping device disposed on the upper rail. A first mold temporary storage area 6 is provided between the fixture installation station 3 and the fixture disassembly station 5. The molds removed from the fixture disassembly station 5 are temporarily stored in the first mold temporary storage area 6 and transferred to the fixture installation station 3 for installation when needed.

[0075] By setting the fixture installation station 3 and the fixture disassembly station 5 to correspond to each other and setting the first mold recycling device in between, it is beneficial to quickly recycle the fixture, save production time, and help improve production efficiency.

[0076] refer to Figure 3 In a preferred embodiment, the secondary foaming line includes a first conveyor line, a second conveyor line, and a third conveyor line arranged in parallel. The fixture installation station 3 is located on the second conveyor line, and the fixture disassembly station 5 is located on the third conveyor line. Preferably, the secondary foaming line is arranged in an "S" shape.

[0077] The first conveyor line is equipped with a bottom foaming station 1 and a bottom pressure holding station 2 located downstream of the bottom foaming station 1. The bottom foaming station 1 is used for the installation and injection of the clamps for the bottom side beam. Furthermore, the bottom foaming station 1 corresponds to the second end station located at the end of the second conveyor line, which is used for the disassembly of the clamps for the bottom side beam.

[0078] The refrigerated container secondary foaming production system also includes a second mold recycling device. In one embodiment, the second mold recycling device includes an upper rail and a clamping device disposed on the upper rail. The second mold recycling device is connected to the second end station and the bottom foaming station 1. The second mold recycling device is used to transfer the molds removed from the second end station to the bottom foaming station 1. Preferably, a second mold temporary storage area is provided between the second end station and the bottom foaming station 1.

[0079] The first end station, located at the end of the first conveyor line, corresponds to the fixture installation station 3 of the second conveyor line. A workpiece buffer area is provided between the first end station and the fixture installation station 3. The first end station is constructed as a low-pressure holding station and / or a waiting transfer station.

[0080] The cleaning and labeling process is carried out in the labeling room. The output cleaning line is located downstream of the secondary foaming line and is connected to the third end station at the very end of the secondary foaming line via the first conveyor device.

[0081] During production, after the marking is completed, multiple marking lines merge into a single line via a second conveyor device in the drying chamber. The box body flows in a single line starting from the secondary foaming line. The box body passes through the first foaming and bottom pressure holding on the first conveyor line. At the bottom foaming station 1, the fixtures for the bottom side beams are installed and injected. It is then moved laterally from the first end station of the first conveyor line to the fixture installation station 3 of the second conveyor line via the second conveyor device. At the fixture installation station 3, the front frame mold and the rear frame mold are installed, and the front and rear frames are foamed. After the injection is completed, the box body, with the fixtures, flows in the opposite direction for one station on the first conveyor line via the second conveyor device. Then, the top side beam is foamed, and the box body is moved laterally from the second end station of the second conveyor line to the third conveyor line and then conveyed forward again. At the second end station of the second conveyor line, the fixtures for the bottom side beams are also disassembled, and the molds are retrieved between the second end station and the bottom foaming workpiece via a second mold recovery device. Furthermore, before the box is conveyed from the clamp installation station 3 of the second conveyor line to the clamp disassembly station 5 of the third conveyor line, it passes through at least four consecutively set foaming and pressure holding stations 4 to meet the pressure holding requirement of 12 minutes for secondary foaming. The box moves to the clamp disassembly station 5 of the third conveyor line for clamp disassembly. The mold is retrieved between the clamp disassembly station 5 and the clamp installation station 3 by the first mold recovery device. The box continues to flow to the labeling room for subsequent operations.

[0082] The following will refer to Figure 6 The side view of the secondary foaming line shown illustrates the recycling and installation process of the secondary foaming fixture 31.

[0083] In the illustrated embodiment, the secondary foaming line includes a first conveyor line 1, a second conveyor line 2, and a third conveyor line 3 arranged in parallel. Each conveyor line is connected to each workstation via a first conveying device for conveying workpieces. Furthermore, the first conveying devices of different conveyor lines operate in opposite directions. Workpieces are conveyed between lines 1 and 2, and between lines 2 and 3, via a second conveying device, namely a transverse conveyor chain 7.

[0084] The second foaming line is arranged in an "S" shape. Specifically, the first conveyor of line 1 transports the box 8 forward to the first end station of line 1. The transverse conveyor 7 transports the box 8 from the first end station through the workpiece buffer area 34 to the fixture installation station 3 of line 2. The fixture gripping device 32, located on the track beam 33, transports the mold from the first mold storage area to the fixture installation station 3 for installation. Afterward, the first conveyor of line 2 transports the box 8 in reverse to the second end station of line 2. The transverse conveyor 7 transports the box 8 from the second end station to line 3. The first conveyor of line 3 transports the box 8 forward to the fixture disassembly station 5, passing through at least four foaming and pressure holding stations 4 between the fixture installation station 3 and the fixture disassembly station 5. The fixture gripping device 32 moves the disassembled mold laterally to the first mold storage area, completing the recovery and installation process of the front and rear frame molds. The next production cycle continues.

[0085] The processes and steps described in all the preferred embodiments above are merely examples. Unless adverse effects occur, various processing operations can be performed in a different order than the above-described processes. The order of steps in the above processes can also be added, combined, or deleted according to actual needs.

[0086] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0087] This application has been described through the above embodiments. However, it should be understood that the above embodiments are only for illustrative purposes. This application is not limited to the above embodiments. Many variations and modifications can be made based on the teachings of this application, and all such variations and modifications fall within the scope of protection claimed in this application.

Claims

1. A secondary foaming production system for refrigerated containers, characterized in that, The refrigerated container secondary foaming production system includes: A secondary foaming line is used for the continuous operation of the secondary foaming process of refrigerated containers. The secondary foaming line has multiple consecutively arranged workstations, including at least four consecutively arranged foaming and pressure-holding workstations, which are used for the foaming and pressure-holding steps in the secondary foaming process. A conveying device is provided between each of the workstations for conveying workpieces; The total time during which the running time of the workpiece at the at least four consecutively arranged foaming and pressure-holding stations meets the pressure-holding requirements; The secondary foaming line is arranged in an S-shape and includes a first conveyor line, a second conveyor line, and a third conveyor line arranged in parallel. The first conveyor line conveys in the forward direction, the second conveyor line conveys in the reverse direction, and the third conveyor line conveys in the forward direction. The conveying device includes a first conveying device and a second conveying device. The first conveying device is connected to each of the workstations on each of the conveying lines for conveying workpieces. The second conveying device is connected to two workstations on two adjacent conveying lines for conveying workpieces. The first conveying devices on different conveying lines operate in opposite directions.

2. The refrigerated container secondary foaming production system according to claim 1, characterized in that, An upstream fixture installation station is provided for the at least four consecutively arranged foaming and pressure-holding stations. The fixture installation station is used for the installation and material injection of fixtures for at least one of the top side beam, front frame, and rear frame. Downstream of the at least four consecutively arranged foaming and pressure-holding stations is a clamp disassembly station, which is used to disassemble the clamps of at least one of the top side beam, front frame, and rear frame. The fixture installation station and the fixture disassembly station are located on two adjacent conveyor lines and correspond to each other. The refrigerated container secondary foaming production system also includes a first mold recycling device, which is connected to the fixture installation station and the fixture disassembly station. The first mold recycling device is used to transfer the molds removed from the fixture disassembly station to the fixture installation station.

3. The refrigerated container secondary foaming production system according to claim 2, characterized in that, A first mold storage area is provided between the fixture installation station and the fixture disassembly station.

4. The refrigerated container secondary foaming production system according to claim 2, characterized in that, The fixture installation station is located on the second conveyor line, and the fixture disassembly station is located on the third conveyor line; The first conveyor line is equipped with a bottom foaming station and a bottom pressure holding station located downstream of the bottom foaming station, wherein the bottom foaming station is used for the installation and injection of the clamps for the bottom side beam.

5. The refrigerated container secondary foaming production system according to claim 4, characterized in that, The first end station located at the end of the first conveyor line corresponds to the fixture installation station. The first end station is constructed as a low-pressure holding station and / or a waiting transfer station.

6. The refrigerated container secondary foaming production system according to claim 4, characterized in that, The second end station located at the end of the second conveyor line corresponds to the bottom foaming station, and the second end station is used for disassembling the clamps of the bottom side beam; The refrigerated container secondary foaming production system also includes a second mold recycling device, which is connected to the second end station and the bottom foaming station. The second mold recycling device is used to transfer the mold removed from the second end station to the bottom foaming station.

7. The refrigerated container secondary foaming production system according to claim 6, characterized in that, A second mold storage area is provided between the second end station and the bottom foaming station.

8. The refrigerated container secondary foaming production system according to any one of claims 1-7, characterized in that, The number of foaming and pressure-holding stations is even.

9. The refrigerated container secondary foaming production system according to any one of claims 1-7, characterized in that, The refrigerated container secondary foaming production system also includes: A preheating line, located upstream of the secondary foaming line, comprising multiple preheating stations connected by the second conveying device; and Multiple marking lines are provided, the number of which corresponds to the number of preheating stations, and the marking lines are located upstream of the preheating stations and connected via the first conveying device.

10. The refrigerated container secondary foaming production system according to any one of claims 1-7, characterized in that, The refrigerated container secondary foaming production system also includes an output cleaning line, which is located downstream of the secondary foaming line and connected to the third end station at the very end of the secondary foaming line via the first conveying device.

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