Insulation box workpiece joint processing device

Abstract

This invention provides a combined processing device for insulation box workpieces. Because it integrates a worktable, a sawing mechanism, and a cutting mechanism, it combines multiple processing functions such as drilling, milling, and sawing into a single unit. This allows the processing of insulation boxes to be completed in one device, eliminating the need for multiple equipment switches and workpiece transfers, reducing process changeover time and workpiece transfer procedures, and improving production efficiency. Furthermore, by integrating multiple functions into one unit, it avoids the separate use of dedicated sawing equipment and machining centers, increasing the equipment's load capacity while reducing its floor space and lowering workshop space costs. In addition, since the worktable can hold multiple insulation box workpieces, the sawing and cutting mechanisms can be used simultaneously to process two workpieces differently, further increasing the equipment's load capacity.

Description

Technical Field

[0001] This utility model belongs to the technical field of liquefied natural gas (LNG) insulation box production equipment, specifically relating to a combined processing device for insulation box workpieces. Background Technology

[0002] With the acceleration of the global energy transition, LNG trade volume has shown a significant growth trend, climbing from 250 million tons in 2010 to 450 million tons in 2024. This trend has directly driven the continuous increase in LNG carrier orders. As a core component of LNG carrier cargo tanks, the cargo containment system needs to achieve safe storage of LNG in an ultra-low temperature environment of -163℃. The insulation box, which plays a role in heat insulation, involves complex processing of multiple materials, including the irregular contour cutting of foam core material (the tolerance must be strictly controlled within ±0.5mm) and high-precision milling of the splicing surface of composite panels (to ensure fitting accuracy).

[0003] Currently, the existing processing mode for this type of insulation box is usually a step-by-step operation mode of "cutting-transfer-milling". That is, the workpiece is first sawed with a special sawing equipment, and then the workpiece is transferred to a three-axis machining center for milling, drilling and other processing. Since the special sawing equipment can only complete straight line or simple angle processing, complex processes require multiple clamping and adjustment; the three-axis machining center is also not compatible with sawing function. Therefore, this step-by-step operation mode has to be adopted. This mode brings several problems: First, the process changeover is very time-consuming. The processing of a single box requires 3-4 equipment changes, and the cumulative auxiliary time is too long, which greatly restricts production efficiency. Second, the repeatability error is prominent. The positioning deviation caused by multiple clamping can reach 0.3mm-0.8mm, which is difficult to meet the high-precision assembly standards. Third, the equipment utilization rate is low. The load rate of the special sawing equipment and the machining center is only 45% and 60% respectively, and an independent loading and unloading area is required, which increases the workshop floor space by more than 30%.

[0004] As the construction cycle of LNG carriers continues to shorten, the efficiency bottleneck of existing processing equipment is becoming increasingly prominent. Data from a major domestic shipyard shows that insulation box processing has become a critical bottleneck in the production of LNG cargo containment systems, with equipment capacity falling short by 40%, directly causing delays in the delivery of some orders. Meanwhile, the step-by-step processing model increases manual intervention, not only raising labor costs by 30% but also causing approximately 2% of workpieces to be scrapped due to operational errors, further pushing up production costs. Against this backdrop, the development of high-efficiency processing equipment integrating cutting and milling functions has become an urgent need to overcome the bottleneck in LNG carrier insulation box production. Utility Model Content

[0005] This utility model is designed to solve the aforementioned problems. Its purpose is to provide a combined processing device that integrates cutting and milling functions, thereby resolving the cumbersome processing steps of insulation boxes, improving processing efficiency, and reducing processing costs. The technical solution adopted by this utility model is as follows:

[0006] This utility model provides a combined processing device for insulating box workpieces, used for processing insulating box workpieces. The device includes: a worktable for holding one or more of the insulating box workpieces; a support mechanism; a sawing mechanism disposed above one side of the worktable via the support mechanism for sawing the insulating box workpieces; and a cutting mechanism disposed above the other side of the worktable via the support mechanism for milling, grooving, and / or drilling the insulating box workpieces.

[0007] The insulating box workpiece combined processing device provided by this utility model may also have the following technical features, wherein the sawing processing mechanism and the cutting processing mechanism each include: a crossbeam, which is movably mounted on the support mechanism along the length direction of the worktable; a slide block, which is vertically mounted on the corresponding crossbeam; a spindle system, which is mounted on the corresponding slide block; and a power head, which is mounted at the lower end of the corresponding spindle system. The sawing processing mechanism also includes a circular saw blade, which is mounted on one side of the power head, and the cutting processing mechanism also includes a cutting tool, which is mounted on one side of the power head.

[0008] The insulating box workpiece joint processing device provided by this utility model may also have the following technical features: the power head is a five-axis universal power head; the slide is set on the crossbeam via a rolling guide rail; the sawing processing mechanism and the cutting processing mechanism each include: a crossbeam driving mechanism for driving the crossbeam to move, which includes a servo motor; and a slide driving mechanism for driving the slide to rise and fall, which includes a servo motor.

[0009] The insulating box workpiece combined processing device provided by this utility model may also have the following technical features, wherein the cutting processing mechanism is used to mill, groove or drill the upper surface and side surface of the insulating box workpiece.

[0010] The insulating box workpiece combined processing device provided by this utility model may also have the following technical features, wherein the sawing processing mechanism is used to saw the insulating box workpiece in the transverse, longitudinal or other specified directions, and the diameter of the circular saw blade is greater than or equal to 1m.

[0011] The insulating box workpiece combined processing device provided by this utility model may also have the following technical features: the device further includes a tool magazine for providing replacement cutting tools for the cutting processing mechanism, wherein the cutting tools are detachably mounted on the corresponding power head, and the replacement cutting tools are used to replace the cutting tools mounted on the corresponding power head.

[0012] The insulating box workpiece combined processing device provided by this utility model may also have the following technical features, wherein the cutting tool and the replacement cutting tool include at least a milling cutter for milling a plane, a milling cutter for chamfering, a turning tool or milling cutter for grooving, and a drilling tool for drilling.

[0013] The insulating box workpiece combined processing device provided by this utility model may also have the following technical features, wherein the support mechanism includes: a base, the worktable is disposed in the middle of the base; and two columns are symmetrically disposed on both sides of the base, wherein the columns have receiving grooves, and the tool magazine is a telescopic single-row tool magazine disposed in the receiving grooves.

[0014] Functions and effects of utility models

[0015] The insulating box workpiece combined processing device provided by this utility model integrates multiple processing functions such as drilling, milling, and sawing by having a worktable, a sawing mechanism, and a cutting mechanism. This allows the processing of insulating boxes to be completed in one device, eliminating the need for multiple equipment switches and workpiece transfers, reducing process changeover time and workpiece transfer processes, and improving production efficiency. Furthermore, the integration of multiple functions avoids the separate use of dedicated sawing equipment and processing centers, increasing the equipment's load capacity while reducing the equipment's floor space and lowering workshop space costs. In addition, since the worktable can hold multiple insulating box workpieces, the sawing mechanism and the cutting mechanism can be used simultaneously to process two workpieces differently, further increasing the equipment's load capacity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the combined processing device for insulating box workpieces in this embodiment of the present invention;

[0017] Figure 2 These are schematic diagrams of the combined processing device for insulating box workpieces at different angles in embodiments of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of an insulating box workpiece in the prior art.

[0019] Figure label:

[0020] 10. Combined processing device for insulation box workpieces; 11. Worktable; 12. Support mechanism; 121. Base; 122. Column; 1221. Receiving groove; 13. Sawing processing mechanism; 131. Sawing crossbeam; 132. Sawing slide; 133. Sawing spindle system; 134. Sawing power head; 135. Circular saw blade; 14. Cutting processing mechanism; 141. Cutting crossbeam; 142. Cutting slide; 143. Cutting spindle system; 144. Cutting power head; 145. Cutting tool; 15. Tool magazine; 20. Insulation box workpiece; 21. Workpiece body; 21. Polyurethane foam board; 212. Wooden board; 213. Long groove; 214. Right angle groove; 22. Wedge block. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following describes in detail the double sliding ram combined processing device for insulating box workpieces of this utility model in conjunction with the embodiments and accompanying drawings.

[0022] Example

[0023] This embodiment provides a combined processing device for insulating box workpieces, used to process insulating box workpieces constituting LNG cargo tanks. It can process two insulating box workpieces simultaneously and is mainly used in the finishing stage of insulating box workpieces, solving the problem of cumbersome processing procedures, improving processing efficiency, and reducing processing costs. To facilitate the explanation of the device's structure and function, the structure of the workpiece and processing requirements will be briefly described below.

[0024] Figure 3 This is a schematic diagram of the structure of an insulating box workpiece in the prior art.

[0025] like Figure 3 As shown, the insulating box workpiece 20 includes a workpiece body 21 and multiple wedges 22.

[0026] The workpiece body 21 has a three-layer composite structure, with a middle layer of polyurethane foam board 211 (foam core material) and upper and lower layers of wood-based panels 212. The upper surface of the workpiece body 21 has multiple elongated grooves 213, and the cross-section of each groove 213 is inverted T-shaped, meaning the bottom width is greater than the opening width. Each of the four corners of the workpiece body 21 has a right-angled groove 214, with chamfered corners at the inner angles. Furthermore, the upper surface and sides of the workpiece body 21 have multiple mounting holes (not shown in the figure).

[0027] The wedge 22 is made of wood and consists of a long wooden board and two wooden strips. The whole is roughly U-shaped with right angles. The two wooden strips are respectively embedded and fixed in two right-angled grooves 214 at one end of the workpiece body 21.

[0028] The apparatus provided in this embodiment is used to give the workpiece body 21 more precise dimensions by sawing and milling the plane, and to process the aforementioned elongated groove 213, right-angled groove 214, and assembly hole. Insulation box workpieces may have various other shapes, but the processing requirements are generally similar.

[0029] Figure 1 This is a schematic diagram of the structure of the combined processing device for insulation box workpieces in this embodiment. Figure 2 These are schematic diagrams of the combined processing device for insulating box workpieces at different angles in this embodiment.

[0030] like Figure 1 and Figure 2 As shown, the combined processing device 10 for insulating box workpieces includes: a worktable 11, a support mechanism 12, a sawing mechanism 13, a cutting mechanism 14, and a tool magazine 15.

[0031] The worktable 11 is flat, with its upper surface being essentially planar, and is used to hold the raw material plate or insulation box workpiece to be processed. Appropriate tooling can be used to position the insulation box workpiece on the worktable 11; such tooling includes, for example, locating pins and locating blocks.

[0032] The support mechanism 12 is used to provide support for the workbench 11 and the processing mechanism 13, and includes a base 121 and two columns 122.

[0033] The base 121 is generally flat in shape with a groove in the middle, and the worktable 11 is embedded in the groove in the middle of the base 121.

[0034] Both columns 122 are roughly in the shape of a wide T-shaped plate, respectively set on both sides of the base 121, and located on both sides of the worktable 11 in the width direction, with their faces perpendicular to the width direction of the worktable 11. In this embodiment, the two columns 122 adopt an integral gantry frame structure, made of high-strength gray cast iron, and are fixedly installed on both sides of the base 121, forming a symmetrical distribution.

[0035] The sawing mechanism 13 is mounted above one side of the worktable 11 via a support mechanism 12. It is used to saw the insulation box workpiece in the transverse, longitudinal, or other specified directions, including sawing the sides of the insulation box workpiece to give it more precise dimensions. The sawing mechanism 13 includes a sawing beam 131, a sawing beam drive mechanism (not shown), a sawing ram 132, a sawing ram drive mechanism (not shown), a sawing spindle system 133, a sawing power head 134, and a circular saw blade 135.

[0036] The sawing beam 131 is movably mounted on the upper ends of two columns 122. High-precision guide rails are mounted on the upper ends of the two columns 122, and the sawing beam 131 is connected to the two columns 122 via these guide rails, thus placing it above the worktable 11. The length direction of the beam 131 is consistent with the width direction of the worktable 11, and it can move along the length direction (Y-axis direction) of the worktable 11. A beam drive mechanism is used to drive the sawing beam 131 to move. The beam drive mechanism can adopt corresponding structures in the prior art, such as those including a servo motor and a lead screw. In this embodiment, a servo motor is used to drive the beam, enabling smooth movement of the beam along the Y-axis on the columns, with a moving speed range of 5m / min-30m / min and a positioning accuracy of ±0.01mm.

[0037] The sawing ram 132 is slidably mounted on the sawing beam 131, and a horizontal high-precision rolling guide rail is installed on the beam 131. The sawing ram 132 and the sawing beam 131 are connected through the high-precision rolling guide rail. A ram drive mechanism is used to drive the beam 131 to move. The ram drive mechanism can adopt a corresponding structure in the prior art, such as including a servo motor and a lead screw. In this embodiment, a servo motor is used to drive the ram, which can realize the ram's lifting movement along the Z-axis direction, with a lifting stroke of 0-1500mm and a repeatability of ±0.005mm. Furthermore, the sawing ram 132 adopts a box-type structure with internal reinforcing ribs.

[0038] The sawing spindle system 133 is mounted on the sawing slide 132. In this embodiment, the sawing spindle system 133 is an electric spindle with a power of 22kW-37kW and a speed range of 100r / min-15000r / min, which can be adjusted according to different processing requirements. The front end of the spindle is equipped with a high-precision bearing to ensure the stability and rotational accuracy of the spindle during high-speed rotation, with radial runout not exceeding 0.002mm.

[0039] The sawing power head 134 is a five-axis universal power head, installed at the lower end of the sawing spindle system 133. The output shaft of the sawing power head 134 is connected to the spindle system 133 via a coupling or other transmission components. In this embodiment, the sawing power head 134 is driven by a direct drive motor and has two rotating axes, A-axis and C-axis. The rotation range of the A-axis is -120° to +120°, and the C-axis can achieve 360° infinite rotation. The positioning accuracy of both axes is ±5″.

[0040] The circular saw blade 135 is disposed on one side of the sawing power head 134. The sawing spindle system 133 and the sawing power head 134 drive the circular saw blade 135 to rotate and move, thereby enabling the sawing of the insulating box workpiece in the transverse, longitudinal and various specified angles. In this embodiment, the circular saw blade 135 has a large diameter, which is greater than or equal to 1m.

[0041] The cutting mechanism 14 is mounted above the other side of the worktable 11 via a support mechanism 12. It is used for milling and / or drilling the insulation box workpiece, including milling the upper and side surfaces of the insulation box workpiece; machining the aforementioned elongated groove 213 on the upper surface of the insulation box workpiece; machining the aforementioned right-angle groove 214 at the corner of the insulation box workpiece; machining assembly holes at predetermined positions on the upper and side surfaces of the insulation box workpiece, etc. The cutting mechanism 14 includes a cutting beam 141, a cutting beam drive mechanism (not shown), a cutting ram 142, a cutting ram drive mechanism (not shown), a cutting spindle system 143, a cutting power head 144, and a cutting tool 145.

[0042] The cutting beam 141 is also movably mounted on the upper end of the two main columns 122 via high-precision guide rails. The cutting beam drive mechanism is used to drive the cutting beam 141 to move along the Y-axis direction. Its structure and parameters are basically the same as those of the sawing beam drive mechanism.

[0043] The cutting slide 142 is also mounted on the cutting beam 141 via a high-precision rolling guide rail. The cutting slide drive mechanism is used to drive the cutting slide 142 to move up and down along the Z-axis. Its structure and parameters are basically the same as those of the sawing slide drive mechanism.

[0044] The cutting spindle system 143 is mounted on the cutting slide 142. The cutting power head 144 is a five-axis universal power head, which is installed at the lower end of the cutting spindle system 143. Its structure and parameters are basically the same as those of the sawing spindle system 133 and the sawing power head 134.

[0045] The cutting tool 145 is detachably mounted on one side of the cutting power head 144. The cutting spindle system 143 and the cutting power head 144 drive the cutting tool 145 to rotate and move. The cutting tool 145 can be a surface machining tool (e.g., a milling tool) or a hole machining tool (e.g., a drilling tool), and can be any of these tools, depending on the edge structure, groove structure, hole structure, etc. to be machined.

[0046] Furthermore, the two slides are respectively mounted on opposite sides of the two crossbeams. Under normal circumstances, a certain distance is maintained between the two crossbeams so that the sawing mechanism 13 and the cutting mechanism 14 do not interfere with each other.

[0047] The tool magazine 15 is used to accommodate (store) multiple different replacement cutting tools to provide different tools for the cutting mechanism 14 and / or the sawing mechanism 13, ensuring that the appropriate tool can be replaced in a timely manner according to the processing requirements of the cutting power head 144. The replacement cutting tools can also be surface finishing tools (e.g., milling tools) or hole finishing tools (e.g., drilling tools), and all replacement cutting tools are matched with the cutting power head 144. In this embodiment, the cutting tools and replacement cutting tools include at least milling cutters for milling planes, milling cutters for chamfering, turning tools or milling cutters for grooving, and drilling tools for drilling.

[0048] In this embodiment, there are two tool magazines 15, which are used to provide tools for the sawing mechanism 13 and the cutting mechanism 14, respectively. Each of the two columns 122 has a receiving slot 1221 on its side facing the worktable 11. Both tool magazines 15 are extendable (telescopic) single-row tool magazines, located in the receiving slots 1221. The tool magazines 15 can retract and be accommodated in their respective receiving slots 1221. When a tool needs to be changed, the tool magazines 15 can quickly extend, resulting in a short tool change time of only 2-3 seconds, thus improving the continuity of processing.

[0049] In addition, the insulating box workpiece joint processing device 10 is also equipped with a cooling system, a lubrication system, and a CNC system. The cooling system uses high-pressure air cooling to cool the cutting tools, preventing overheating and workpiece deformation. The lubrication system uses an automatic lubrication pump to periodically lubricate the guide rails and transmission components, extending the equipment's service life. The CNC system is a high-performance industrial-grade CNC system with multi-axis linkage capabilities, enabling the programming and automatic operation of complex part machining. These systems are all existing technologies and will not be described in detail.

[0050] In use, two insulating box workpieces can be placed on the workbench 11 at the same time. The sawing mechanism 13 is used to saw one of the workpieces, while the cutting mechanism 14 is used to mill and drill the other workpiece.

[0051] The role and effect of the embodiments

[0052] The dual-slide joint processing device for insulation box workpieces provided in this embodiment integrates multiple processing functions such as drilling, milling, and sawing by combining a worktable, a sawing mechanism, and a cutting mechanism. This allows the processing of insulation boxes to be completed in one device, eliminating the need for multiple equipment switches and workpiece transfers, reducing process changeover time and workpiece transfer processes, and improving production efficiency. Furthermore, the integration of multiple functions avoids the separate use of dedicated sawing equipment and processing centers, increasing the equipment's load capacity while reducing the equipment's floor space and lowering workshop space costs. In addition, since the worktable can hold multiple insulation box workpieces, the sawing mechanism and the cutting mechanism can be used simultaneously to process two workpieces differently, further increasing the equipment's load capacity.

[0053] In this embodiment, both the sawing and cutting mechanisms employ a spindle system, a five-axis universal power head, and a high-precision transmission system. This not only provides significant machining flexibility, enabling the processing of various complex structures, but also ensures positioning and motion accuracy during the machining process. It reduces repetitive positioning errors caused by multiple clamping operations, allowing machining tolerances to be controlled within ±0.5mm, meeting the high-precision assembly requirements of the insulation box. Furthermore, the optimized process and improved machining accuracy resulting from the device structure reduce manual intervention and labor costs, while also decreasing workpiece scrap rates, further lowering production costs.

[0054] Furthermore, since the support mechanism uses double columns to provide support, and the double columns adopt an integral gantry frame structure, forming a symmetrical distribution on both sides of the base, and are made of high-strength materials, the overall rigidity of the equipment is greatly improved, which can effectively reduce vibration during the processing and provide a solid guarantee for processing accuracy.

[0055] Furthermore, because the ram adopts a box-type structure with internal reinforcing ribs, its rigidity and resistance to deformation are improved, making the equipment more durable and reducing the frequency of inspection and maintenance.

[0056] Furthermore, the inclusion of a tool magazine allows for the provision of various cutting tools to the cutting mechanism, facilitating easy switching between tools according to the machining process. Moreover, the tool magazine is an extendable single-row type, which can be stored in its corresponding slot when not in use, thus avoiding an increase in equipment size due to its installation. When tool changes are needed, the tool magazine can be quickly extended, enabling rapid and convenient tool replacement to meet machining requirements and further improving machining efficiency.

[0057] The above embodiments are merely illustrative of specific implementations of this utility model, and the utility model is not limited to the scope of the above embodiments. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are only for illustrating the principles of the utility model. Various changes and modifications can be made to the utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the utility model as claimed. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A combined processing device for insulating box workpieces, used for processing insulating box workpieces, characterized in that, include: A workbench for holding one or more of the aforementioned insulating box workpieces; Supporting institutions; A sawing mechanism, mounted above one side of the worktable via the support mechanism, is used to saw the insulating box workpiece; and A cutting mechanism, mounted above the other side of the worktable via the support mechanism, is used to mill, groove, and / or drill holes in the insulating box workpiece.

2. The combined processing device for insulation box workpieces according to claim 1, Its features are: Both the sawing mechanism and the cutting mechanism include: A crossbeam is movably mounted on the support mechanism along the length of the worktable; The ram is vertically and adjustablely mounted on the corresponding crossbeam; The spindle system is mounted on the corresponding slide; and The power head is located at the lower end of the corresponding spindle system. The sawing mechanism also includes a circular saw blade, disposed on one side of its power head. The cutting mechanism also includes a cutting tool disposed on one side of its power head.

3. The combined processing device for insulation box workpieces according to claim 2, characterized in that: in, The power head is a five-axis universal power head. The slide is mounted on the crossbeam via a rolling guide rail. Both the sawing mechanism and the cutting mechanism further include: A beam drive mechanism for driving the beam to move, comprising a servo motor; and A ram drive mechanism, used to drive the ram to rise and fall, includes a servo motor.

4. The combined processing device for insulation box workpieces according to claim 2, characterized in that: in, The cutting mechanism is used to mill, groove, or drill the upper and side surfaces of the insulation box workpiece.

5. The combined processing device for insulation box workpieces according to claim 2, characterized in that: in, The sawing mechanism is used to saw the insulating box workpiece in the transverse, longitudinal, or other specified directions. The diameter of the circular saw blade is greater than or equal to 1m.

6. The combined processing device for insulating box workpieces according to claim 2, characterized in that, Also includes: A tool magazine is used to provide replacement cutting tools for the cutting mechanism. The cutting tool is detachably mounted on the corresponding power head. The replacement cutting tool is used to replace the cutting tool and is installed on the corresponding power head.

7. The combined processing device for insulating box workpieces according to claim 6, characterized in that: in, The cutting tools and the alternative cutting tools include at least a milling cutter for milling planes, a milling cutter for chamfering, a turning tool or milling cutter for grooving, and a drilling tool for drilling.

8. The combined processing device for insulating box workpieces according to claim 6, characterized in that: in, The supporting structure includes: The base, wherein the worktable is disposed in the middle of the base; and Two uprights are symmetrically arranged on both sides of the base. The column has a receiving groove. The tool magazine is a telescopic single-row tool magazine, which is located in the receiving slot.

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