Elbow posture adjusting device and method for linear split Stirling cryocooler

Abstract

The invention discloses an elbow posture adjusting device and method for a linear split Stirling cryocooler. The device comprises a fixed base provided with a positioning groove, a compression unit is embedded into the positioning groove, and the shape and the size of the positioning groove are matched with those of the compression unit; a fastening assembly is arranged on the first surface of the fixing base and matched with the fixing base so that the compression unit can be fixed to the connecting pipe connector of the fixing base, and the axial center line of the connecting pipe can be perpendicular to the first surface. And the first adjusting assembly, the second adjusting assembly and the third adjusting assembly are used for cooperatively adjusting the connecting pipe to meet the preset condition under the condition that the preset pipe bending process path information comprises at least three pipe bending sections with different postures. According to the embodiment of the invention, the problems of high manual operation difficulty, easiness in damage, low efficiency and poor consistency of a pipe bending process of the metal connecting pipe of the linear split refrigerator for the infrared detector are solved.

Description

Technical Field

[0001] This application belongs to the technical field of machining, and particularly relates to a bent pipe attitude adjustment device and method for a linear split Stirling refrigerator. Background Art

[0002] Before the linear split Stirling refrigerator is finally operated after being coupled with an infrared detector, it is necessary to pre-bend the metal connecting pipe of the linear split Stirling refrigerator to meet the structural requirements of the whole machine user, and at the same time, it is necessary to ensure that the efficiency and reliability of the refrigerator are not affected. However, the current bending process relies on manual operation, and the actual process effect is difficult to meet the theoretical design requirements. It needs to be adjusted repeatedly, with low efficiency. In addition, it is not easy to grasp the strength during manual operation. Excessive force or uneven force is extremely likely to cause deformation, flattening or even rupture of the metal connecting pipe, affecting the working efficiency of the refrigerator and the reliability of the connecting pipe. Moreover, the consistency of manual operation is poor, and it is not easy to control the batch quality status of the product. Summary of the Invention

[0003] An embodiment of this application provides a bent pipe attitude adjustment device and method for a linear split Stirling refrigerator, which is used to at least solve the problems of low efficiency, poor consistency, and affecting the efficiency and reliability of the refrigerator caused by the bending process relying on manual operation in the related art.

[0004] In a first aspect, an embodiment of this application provides a bent pipe attitude adjustment device for a linear split Stirling refrigerator. The Stirling refrigerator includes a compression unit, an expansion unit, and a connecting pipe respectively connected to the compression unit and the expansion unit; The bent pipe attitude adjustment device includes: A fixed base provided with a positioning groove. The compression unit is embedded inside the positioning groove, and the shape and size of the positioning groove match the shape and size of the compression unit; A fastening component is arranged on the first surface of the fixed base. The fastening component cooperates with the fixed base to fix the connecting pipe interface of the compression unit and the first surface, and the axial center line of the connecting pipe is perpendicular to the first surface; A first adjustment component, a second adjustment component, and a third adjustment component are used to cooperatively adjust the connecting pipe to meet preset conditions when the preset bending process path information includes at least three bent pipe segments with different attitudes.

[0005] In a second aspect, an embodiment of this application provides a bent pipe attitude adjustment method for a linear split Stirling refrigerator. The adjustment method uses the bent pipe attitude adjustment device described in any one of the first aspects to adjust the bent pipe attitude of the connecting pipe of the linear split Stirling refrigerator; The Stirling refrigerator includes a compression unit, an expansion unit, and a connecting pipe respectively connected to the compression unit and the expansion unit; The adjustment method includes: Embed the compression unit into the positioning groove of the fixed base, and the shape and size of the positioning groove match the shape and size of the compression unit; Fix the connecting pipe interface between the compression unit and the fixed base through cooperation with the fastening component, and the axial center line of the connecting pipe is perpendicular to the first surface; When the preset bending process path information includes at least three bending sections with different postures, the connecting pipe is coordinately adjusted through the first adjustment component, the second adjustment component, and the third adjustment component to meet the preset conditions.

[0006] The bending posture adjustment device and method for a linear split Stirling refrigerator according to the embodiments of the present application are based on the compressor of the refrigerator as the main body fixing unit, and form an integrated structure with multiple module components limited and fixed, solving the problems of difficult manual operation, easy damage, low efficiency, and poor consistency in the bending process of the metal connecting pipe of the linear split refrigerator for infrared detectors. The process operation is convenient, improving the efficiency of the bending process; the process is controllable, improving the product quality and product consistency; ensuring the performance and reliability of the refrigerator, and effectively avoiding damage to the metal connecting pipe during the process. Moreover, the device can be repeatedly installed and disassembled, can be applied to the bending structure under different posture conditions, and realizes highly reliable engineering application. Description of the Drawings

[0007] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0008] Figure 1 is a schematic diagram of the main structure of a linear split Stirling refrigerator; Figure 2 is a schematic diagram of the structure of a bending posture adjustment device for a linear split Stirling refrigerator provided by an embodiment of the present application; Figure 3 is a schematic diagram of the structural posture effect of the refrigerator after the exemplary bending process provided by an embodiment of the present application; Figure 4A is a schematic diagram of the assembly effect of the bending posture adjustment device and the linear split Stirling refrigerator from the first perspective provided by an embodiment of the present application; Figure 4BIt is a schematic diagram of the assembly effect of the elbow attitude adjustment device and the linear split Stirling refrigerator from the second perspective provided by the embodiments of the present application; Figure 5 It is a schematic flowchart of a method for adjusting the elbow attitude of a linear split Stirling refrigerator provided by the embodiments of the present application.

[0009] Reference numerals: Compression unit 100, expansion unit 200, connecting pipe 300, Fixed base 101, fastening assembly 102, first angle adjustment assembly 103, first length adjustment assembly 104, position adjustment assembly 105, second angle adjustment assembly 106, second length adjustment assembly 107, third adjustment assembly 108, first hinge mechanism 109, second hinge mechanism 110, third hinge mechanism 111, first positioning substrate 112, second positioning substrate 113. Detailed implementation manners

[0010] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than limiting the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application.

[0011] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, elements defined by the statement "including..." do not exclude the presence of additional identical elements in the process, method, article or device including the said elements.

[0012] Infrared detector assemblies are widely used in multiple fields, and the use environment is extremely complex, and they need to have good environmental adaptability and high reliability.

[0013] As an important component of the infrared detector assembly, the linear split Stirling refrigerator is mainly used to cool the infrared detector, provide a stable low-temperature environment for the infrared detector chip, reduce the noise of the infrared detector, improve the sensitivity and resolution, and thus improve the infrared imaging effect.

[0014] According to the application characteristics of Stirling refrigerators, according to the position relationship between the compression unit and the expansion unit, Stirling refrigerators are divided into integral type and split type. According to the type of motor, they can be divided into rotary type and linear type.

[0015] refer to Figure 1 , is a schematic diagram of the main structure of a linear split Stirling refrigerator. Figure 1 As shown, the main structure of the linear split Stirling refrigerator is mainly composed of three parts: a compression unit 100', an expansion unit 200' and a connecting pipe 300'. Specifically, the compression unit and the expansion unit of the refrigerator are generally connected by a metal connecting pipe. The interior of the refrigerator is filled with helium, and the compression unit transmits it to the expansion unit through a gas spring resonance system to ensure the phase relationship between the two when they are working. The structural feature of this refrigerator is that since the expansion unit is far away from the compression unit, the interference to the infrared detector caused by mechanical vibration can be reduced, the stability is high, and at the same time, it provides greater flexibility for the structural design of the whole machine. However, due to the introduction of the metal connecting pipe, the dead gap volume inside the refrigerator is increased, which makes the efficiency of the refrigerator with this structure relatively reduced and the power consumption relatively increased.

[0016] Therefore, after the linear split Stirling refrigerator is coupled with the infrared detector, it is usually necessary to bend the metal connecting pipe of the linear split Stirling refrigerator, and at the same time, it is necessary to ensure that the efficiency and structural reliability of the refrigerator before and after the bending process are not affected. To some extent, the bending design of the metal connecting pipe is usually more complicated, and it is often necessary to take into account the structural requirements of the whole machine and the performance of the refrigerator. From the perspective of process operation, the bending process is difficult, and the actual effect is difficult to be completely consistent with the bending theory design.

[0017] That is to say, before the linear split Stirling refrigerator is coupled with the infrared detector and finally works, the metal connecting pipes of the linear split Stirling refrigerator need to be bent in advance to meet the structural requirements of the user of the whole machine, while ensuring that the efficiency and reliability of the refrigerator are not affected.

[0018] At present, the pipe bending process relies on manual operation. However, this method has the following problems: One is that the process is complex and difficult, and it is hard to operate. The metal connecting pipe of the linear split Stirling refrigerator is usually made of red copper, and the two ends are welded at the interfaces of the compressor and the expander. The middle of the connecting pipe is through for gas exchange. It is not easy to grasp the angle and relative position of the bent pipe during manual operation, and the general form of the bent pipe design is irregular bending, and it is very difficult to master the bending in the space dimension.

[0019] The second is that there is a large deviation between the bent pipe process and the theoretical design, and it needs to be adjusted repeatedly, resulting in low efficiency. There is a certain deviation between the theoretical design requirements of the bent pipe and the actual process. Especially for manual operation, the deviation between the bent pipe effect and the theoretical requirements is large. After actual bending, it needs to be installed, adjusted and tested. Manual operation often needs to repeatedly adjust the position and angle to ensure that the performance of the refrigerator meets the requirements, consuming a large amount of human and time costs, and the process efficiency is low.

[0020] The third is that it is not easy to grasp the strength during manual operation. Excessive force or uneven force is very likely to cause deformation, flattening or even cracking of the metal connecting pipe, affecting the working efficiency of the refrigerator and the reliability of the connecting pipe. The material of the metal connecting pipe is generally red copper, and there is a ventilation hole in the middle, which serves as the gas exchange path between the compression unit and the expansion unit. During the operation of the refrigerator, it is necessary to ensure the smoothness of the gas path. If the metal connecting pipe is deformed, flattened or cracked during the bending process, it will affect the working efficiency and reliability of the refrigerator.

[0021] The fourth is that the consistency of manual operation is poor, and it is not easy to control the batch quality status of the products. When the same process operator manually bends multiple refrigerators in the same state, there will be a large deviation in the bent pipe state of the refrigerators in the same batch. Therefore, it is very difficult to control the batch quality consistency state of the products.

[0022] In order to solve the problems of related technologies, the embodiments of the present application provide a bent pipe attitude adjustment device and method for a linear split Stirling refrigerator.

[0023] It should be noted that the bent pipe attitude adjustment device and method of the embodiments of the present application are applied to a linear split Stirling refrigerator, and its main structure can refer to Figure 1 the example of

[0024] That is, the Stirling refrigerator includes a compression unit, an expansion unit, and connecting pipes respectively connected to the compression unit and the expansion unit.

[0025] Figure 2 The structural schematic diagram of the bent pipe attitude adjustment device for a linear split Stirling refrigerator provided by the embodiments of the present application is shown.

[0026] As Figure 2As shown, the elbow attitude adjustment device at least includes: a first adjustment component, a second adjustment component, and a third adjustment component 108. Among them, the first adjustment component includes a first angle adjustment component 103 and a first length adjustment component 104, and the second adjustment component includes a position adjustment component 105, a second angle adjustment component 106, and a second length adjustment component 107.

[0027] It should be noted that in this embodiment, the first adjustment component, the second adjustment component, and the third adjustment component 108 are used to cooperatively adjust the connecting pipe to meet the preset conditions when the preset elbow process path information includes at least three elbow segments with different attitudes.

[0028] Figure 3 The schematic diagram of the attitude effect of the refrigerator structure after the exemplary elbow process is shown. As Figure 3 shown, the connecting pipes 300 in the refrigerator are respectively connected to the compression unit 100 and the expansion unit 200. The connecting pipes 300 after the elbow process according to the preset elbow process path information include three elbow segments with different attitudes.

[0029] Furthermore, in some embodiments, the elbow attitude adjustment device further includes: a fixed base 101 and a fastening component 102, which cooperate with each other to fix the whole refrigerator.

[0030] Optionally, the fixed base 101 is provided with a positioning groove, the compression unit 100 is embedded inside the positioning groove, and the shape and size of the positioning groove are both matched with the shape and size of the compression unit 100.

[0031] Figure 4A and Figure 4B respectively show the schematic diagrams of the assembly effect of the elbow attitude adjustment device and the linear split Stirling refrigerator from the first perspective and the second perspective. As Figure 4A and Figure 4B shown, taking the compression unit 100 of the refrigerator as a columnar shell structure as an example, the positioning groove can be an annular positioning groove. In this way, the outer circumference of the columnar compression unit 100 fits with the inner circumferential surface of the positioning groove to ensure the reliability of the fixed cooperation.

[0032] In some embodiments, the fastening component 102 is arranged on the first surface of the fixed base 101, and the fastening component 102 cooperates with the fixed base 101 to fix the connecting pipe interface between the compression unit 100 and the fixed base 101 and make the axial center line of the connecting pipe 300 perpendicular to the first surface.

[0033] Optionally, the fastening assembly 102 includes at least a gasket and a screw. In this embodiment, the installation method using the fastening assembly 102 is, for example but not limited to: arranging two groups of screws symmetrically along the axial direction of the connecting pipe 300. After the locking screws pass through the gaskets in sequence, they are screwed into the preset threaded holes of the fixed base 101 to form a hoop-type pressing on the connecting pipe 300, so as to form a radial constraint fit to complete the final fixation of the whole refrigerator.

[0034] Further, in some embodiments, the elbow attitude device further includes: a first hinge mechanism 109, a second hinge mechanism 110, a third hinge mechanism 111, and a first positioning substrate 112 and a second positioning substrate 113. Specifically, the first hinge mechanism 109 is detachably disposed on the fixed base 101 and the second positioning substrate 113, the second hinge mechanism 110 is detachably disposed on the fixed base 101 and the second positioning substrate 113, and the first hinge mechanism 109 and the second hinge mechanism 110 are interconnected through the second positioning substrate 113. The third hinge mechanism 111 is detachably disposed on the first positioning substrate 112 and the second positioning substrate 113.

[0035] Among them, the first hinge mechanism 109, the second hinge mechanism 110, and the third hinge mechanism 111 are used to cooperatively adjust the first positioning substrate 112 and the second positioning substrate 113 so that the operation plane of the elbow attitude adjustment device is located in the first plane or the second plane.

[0036] Optionally, the rotation axis of the first hinge mechanism 109 has a certain angle with the first surface of the fixed base 101, and the maximum opening and closing angle can include 0 - 180°.

[0037] In this way, the hinge mechanisms (the first hinge mechanism 109, the second hinge mechanism 110, and the third hinge mechanism 111) with freely adjustable angles of the installation surface are ingeniously designed, and can be freely adjusted on the installation mechanisms (the first positioning substrate 112 and the second positioning substrate 113) in two-dimensional directions according to the requirements of the elbow and the needs. Thus, it can be applied to the elbow bending process of the connecting pipes of general linear split refrigerators of various types of structures.

[0038] In some optional embodiments, the first angle adjustment component 103 is rotatably connected to the second positioning substrate 113 and is used to rotate in the first plane or the second plane to adjust the bending angle of the first elbow section of the connecting pipe 300 to a first preset angle; the first length adjustment component 104 is rotatably connected to the second positioning substrate 113 and is used to adjust the length of the first elbow section of the connecting pipe 300 to a first preset length.

[0039] Optionally, both the first angle adjustment component 103 and the first length adjustment component 104 include positioning reference surfaces distributed along the circumferential direction of the sector. In this way, the first angle adjustment component 103 uses a sector positioning module in cooperation with an axial locking screw to achieve radial angle positioning and adjustment of the first elbow pipe of the refrigerator, and at the same time, the first length adjustment component 104 cooperates with the rotating shaft to constrain the linear extension direction after the elbow pipe and limit the extension section, that is, to achieve axial positioning and length adjustment of the linear extension section after the first elbow pipe of the refrigerator.

[0040] In some alternative embodiments, the position adjustment component 105 is rotatably connected to the second positioning substrate 113 and is used to adjust the bending position of the second elbow pipe section of the connecting pipe 300 to a second preset position; the second angle adjustment component 106 is rotatably arranged on the position adjustment component 105 and is used to rotate on the first plane or the second plane to adjust the bending angle of the second elbow pipe section of the connecting pipe 300 to a second preset angle; the second length adjustment component 107 is in contact with the surface of the second angle adjustment component 106 and is used to adjust the length of the second elbow pipe section of the connecting pipe 300 to a second preset length.

[0041] In some alternative embodiments, the third adjustment component 108 is detachably arranged on the second length adjustment component 107 and is used to adjust the bending position of the third elbow pipe section of the connecting pipe 300 to a third preset position and its bending angle to a third preset angle.

[0042] As an alternative embodiment, both the first angle adjustment component 103 and the second angle adjustment component 106 include screwing screws. Then, rotating on the first plane or the second plane includes: rotating on the first plane or the second plane with the axis center line of its own screwing screw as the rotating shaft. In this way, a rotating pair is formed by the screw and the threaded hole provided on the second positioning substrate 113, and it can rotate around the axis within the range of 0-360° on the first plane or the second plane for stepless angle adjustment, and the screw is locked when the rotation reaches the preset angle to complete the elbow pipe angle adjustment, ensuring precise control of the bending angle.

[0043] In summary, the first adjustment component, the second adjustment component and the third adjustment component 108 constitute a multi-stage elbow pipe adjustment mechanism, which realizes the angle control of the first elbow pipe section and the limit of its extension section, then locks the spatial attitude of the second elbow pipe section based on the extension direction of the first-stage elbow pipe, and finally fixes the final elbow pipe attitude. Therefore, in this embodiment, for the process requirements of the non-regular bending of the metal connecting pipe of the refrigerator in three-dimensional space, based on the tooling with multi-degree-of-freedom adjustment, through modular structure design, precise control of the elbow pipe angle, position and spatial attitude is achieved.

[0044] In addition, it should be understood that the above embodiments only illustrate the functional configuration of the bent pipe attitude adjustment device of this embodiment by taking the connecting pipe 300 after the bent pipe process as including three bent pipe segments with different attitudes. In fact, it can complete a larger number of continuous bends, and the maximum bending angle reaches 180°, significantly improving the process operation efficiency and reliability of the connecting pipe of the refrigerator.

[0045] Furthermore, the present application also provides a method for adjusting the attitude of a bent pipe for a linear split Stirling refrigerator. It should be noted that this adjustment method can use the bent pipe attitude adjustment device of any of the above embodiments to adjust the attitude of the connecting pipe of the linear split Stirling refrigerator. Among them, the Stirling refrigerator includes a compression unit, an expansion unit, and a connecting pipe respectively connected to the compression unit and the expansion unit.

[0046] Reference Figure 5 , is a schematic flow chart of a method for adjusting the attitude of a bent pipe for a linear split Stirling refrigerator according to an embodiment of the present application. As Figure 5 shown, the method for adjusting the attitude of a bent pipe for a linear split Stirling refrigerator may specifically include the following steps: S501. Embed the compression unit into the positioning groove of the fixed base, and the shape and size of the positioning groove match the shape and size of the compression unit; S502. Fix the connecting pipe interface between the compression unit and the fixed base through cooperation with the fastening component, and the axial center line of the connecting pipe is perpendicular to the first surface; S503. When the preset bent pipe process path information includes at least three bent pipe segments with different attitudes, cooperate with the first adjustment component, the second adjustment component, and the third adjustment component to adjust the connecting pipe to meet the preset conditions.

[0047] During specific implementation, the fixed base is the main structure of the bent pipe attitude adjustment device, determining the overall position of the metal connecting pipe of the linear refrigerator and the basic fixed positions of other limiting mechanisms in the bent pipe attitude adjustment device.

[0048] In specific implementation, after fixing the position of the compressor of the refrigerator, according to the position required by the established requirements, it is necessary to first fix the gasket of the fastening component with two screws, and then rotate the first angle adjustment component to the specified position and tighten the screws to determine the position and angle of the first elbow pipe. Then, after bending the pipe according to the path, rotate the first length adjustment component to the specified position and tighten the screws to determine the position and angle of the extended section after the first elbow pipe. Subsequently, it is necessary to fix the position adjustment component on the basis of the fixed base to determine the position of the next section of the elbow pipe. On this basis, rotate the second angle adjustment component to the specified position with screws on the position adjustment component and tighten it to determine the angle of the second elbow pipe. Furthermore, use the second length adjustment component to first abut against the plane of the second angle adjustment component and determine the position of the extended part of the second elbow pipe along the path. Immediately afterwards, fix the third adjustment component on the second length adjustment component as the limiting mechanism for the third elbow pipe of the linear split refrigerator, thereby determining the position and angle of the third elbow pipe.

[0049] In this way, in terms of the fixing method, by cleverly utilizing the structural characteristics of the elbow pipes of the metal connecting pipes of the linear split refrigerator, the method of gradually screwing and fixing and locking is adopted to sequentially complete the fixing of several elbow pipes in the spatial dimension. Finally, an operable process consistent with the theoretical requirements is achieved.

[0050] In addition, in another embodiment, the elbow pipe attitude adjustment device for the linear split Stirling refrigerator can be an integrated fixture. It should be noted that its overall structure is based on the attitude structure after the elbow pipe design as a reference. The specific structure of this integrated fixture will be described in detail below.

[0051] The integrated fixture includes: the main body fixing mechanism of the bent pipe fixture, on which the compression unit of the linear split refrigerator is fixed, and other limiting structures are based on this mechanism for bending the pipe; the first mechanism for fixing the metal connecting pipe interface of the compressor, which fixes the connecting pipe interface between the compression unit and the main body fixing mechanism by pressing the sheet and screwing the screw gasket; the fixed limiting mechanism for the first bending angle of the linear split refrigerator, which achieves the limiting effect by screwing the screw to fix the rotation of the rotating shaft; the limiting mechanism for the extended section after the first bending of the linear split refrigerator, which achieves the limiting effect by screwing the screw to fix the rotation of the rotating shaft; the limiting mechanism for the position of the second bending of the linear split refrigerator, which determines the spatial position of the second bending, and this mechanism block is fixed by screwing the screw into the counterbore on the back of the mounting base; the fixed limiting mechanism for the second bending angle of the linear split refrigerator, which determines the angle of the second bending and achieves the limiting effect by screwing the screw to fix the rotation of the rotating shaft; the limiting mechanism for the extended section after the second bending of the linear split refrigerator, which determines the length of the extended section by fitting with the position of the fixed limiting mechanism for the second bending angle, and at the same time serves as the transfer structure of the limiting mechanism for the third bending; the limiting mechanism for the third bending of the linear split refrigerator, which is fixed on the limiting mechanism for the extended section after the second bending by screws, thereby determining the position and angle of the third bending.

[0052] Furthermore, after positioning the compression unit, the bent pipe can be bent at a free angle on the mounting bases in two planar dimensions. The implementation principle is that several hinge mechanisms are installed between the main body fixing mechanism and the mounting surface, and between the mounting surfaces, so as to achieve free bending and angle adjustment of different mounting surfaces, which is applicable to the bent pipe under general conditions.

[0053] It can be understood that the main body fixing mechanism, as the main structure of the integrated fixture, on the one hand plays the role of fixing the main body of the refrigerator, and on the other hand bears the angles and positions of the entire bent pipe, and realizes the limiting and fixing of the positions and angles of the metal connecting pipe bends through each structural component in sequence.

[0054] Specifically, the limiting mechanism for the position of the second bending of the linear split refrigerator and the fixed limiting mechanism for the second bending angle are both in series and subordinate mechanisms. That is: on the one hand, the limiting mechanism for the position of the second bending determines the position of the bent pipe, and the fixed limiting mechanism for the second bending angle determines the angle of the bent pipe on this basis, realizing the locking of the second bending.

[0055] Similarly, the limiting mechanism for the extended section after the second bending and the limiting mechanism for the third bending are both in series and subordinate mechanisms. That is: on the one hand, the limiting mechanism for the extended section after the second bending determines the position of the bent pipe, and the limiting mechanism for the third bending determines the angle of the bent pipe, realizing the locking of the third bending.

[0056] As described above, the tooling fixture completes the pipe bending process according to the designed path. The design of this fixture is applicable to the pipe bending process requirements in different postures under the general state of linear split refrigerators. By designing an integrated pipe bending fixture, the model of the pipe bending angle position in the theoretical design is transformed into a nested fixed fixture. Using the path of the fixed fixture designed in reverse for pipe bending can more accurately achieve the coincidence between the theoretical design and the actual process.

[0057] That is to say, reverse design is carried out according to the specific position and angle of the theoretical design path of pipe bending. By establishing a model, a nested structure matching the pipe bending can be obtained. On this basis, considering factors such as the fixation of the refrigerator and the convenience of pipe bending installation in the pipe bending process, the fixture model is further optimized and designed as an integrated structure based on the compressor as the main fixed unit, using multiple modules for limit fixation, so as to realize an integrated fixture that is convenient to operate and consistent with the theoretical position and angle.

[0058] Therefore, this integrated fixture comprehensively considers the characteristics of the metal connecting pipes of the refrigerator, and has the characteristics of simple process operation, high efficiency, controllable process, and good consistency. It can effectively solve many technical problems brought by separate manual operations, improve product quality and batch consistency, and can be successfully applied to the mass production of Stirling refrigerators.

[0059] It should be noted that some embodiments of the present application are described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the above embodiments and still achieve the desired results. Additionally, the processes depicted in the drawings do not necessarily require the particular order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0060] The mention of "embodiment" in this application means that the specific features, structures, or characteristics described in connection with the embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0061] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] In the embodiments of the present application, the same reference numerals denote the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are only illustrative and should not constitute any limitation to the present application.

[0063] The term "a plurality of" as used in the present application refers to two or more (including two).

[0064] Although the present application has been described with reference to the preferred embodiments, various improvements can be made thereto and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any manner. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0065] It should also be noted that the exemplary embodiments mentioned in the present application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above steps, that is, the steps can be executed in the order mentioned in the embodiments, or different from the order in the embodiments, or several steps can be executed simultaneously.

[0066] As mentioned above, the above is only the specific implementation manner of the present application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, modules, and units can refer to the corresponding processes in the foregoing method embodiments and will not be repeated herein. It should be understood that the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or substitutions within the technical scope disclosed by the present application, and these modifications or substitutions should all be covered by the protection scope of the present application.

Claims

1. A device for adjusting the posture of a bent pipe of a linear split Stirling refrigerator, characterized in that: The Stirling refrigerator comprises a compression unit, an expansion unit and connecting pipes respectively connected to the compression unit and the expansion unit; The pipe bending posture adjustment device comprises: The fixed base is provided with a positioning groove, the compression unit is embedded in the positioning groove, and the shape and size of the positioning groove match the shape and size of the compression unit; A fastening assembly is provided on the first surface of the fixed base, and the fastening assembly cooperates with the fixed base to fix the compression unit and the connecting pipe interface of the fixed base, and the axial center line of the connecting pipe is perpendicular to the first surface; The first adjustment component, the second adjustment component and the third adjustment component are used to coordinately adjust the connecting pipe to meet preset conditions when the preset bending process path information includes at least three bending sections with different postures.

2. The device for adjusting the posture of a bent pipe according to claim 1, characterized in that: The device further comprises: a first hinge mechanism, a second hinge mechanism, a third hinge mechanism, and a first positioning substrate and a second positioning substrate; The first hinge mechanism is detachably disposed on the fixed base and the second positioning substrate, the second hinge mechanism is detachably disposed on the fixed base and the second positioning substrate, and the first hinge mechanism and the second hinge mechanism are connected to each other through the second positioning substrate, and the third hinge mechanism is detachably disposed on the first positioning substrate and the second positioning substrate; The first hinge mechanism, the second hinge mechanism and the third hinge mechanism are used to coordinately adjust the first positioning substrate and the second positioning substrate so that the operating plane of the bending tube posture adjustment device is located on the first plane or the second plane.

3. The device for adjusting the posture of a bent pipe according to claim 2, characterized in that: The first adjustment component includes a first angle adjustment component and a first length adjustment component; The first angle adjustment component is rotatably connected to the second positioning base plate, and is used to rotate on the first plane or the second plane to adjust the bending angle of the first curved pipe section of the connecting pipe to a first preset angle; The first length adjustment component is rotatably connected to the second positioning base plate, and is used to adjust the length of the first curved pipe section of the connecting pipe to a first preset length.

4. The device for adjusting the posture of a bent pipe according to claim 3, characterized in that: The second adjustment component includes a position adjustment component, a second angle adjustment component and a second length adjustment component; The position adjustment component is rotatably connected to the second positioning base plate, and is used to adjust the bending position of the second curved pipe section of the connecting pipe to a second preset position; The second angle adjustment component is rotatably disposed on the position adjustment component, and is used to rotate on the first plane or the second plane to adjust the bending angle of the second curved pipe section of the connecting pipe to a second preset angle; The second length adjustment component is in contact with the surface of the second angle adjustment component and is used to adjust the length of the second curved pipe section of the connecting pipe to a second preset length.

5. The device for adjusting the posture of a bent pipe according to claim 4, characterized in that: The third adjustment component is detachably arranged on the second length adjustment component, and is used to adjust the bending position of the third curved pipe section of the connecting pipe to a third preset position and the bending angle thereof to a third preset angle.

6. The device for adjusting the posture of a bent pipe according to claim 4, characterized in that: The first angle adjustment assembly and the second angle adjustment assembly both include a screw; The rotating on the first plane or the second plane includes: rotating on the first plane or the second plane with the axis center line of the screw itself being the axis.

7. The device for adjusting the posture of a bent pipe according to claim 3, characterized in that: The first angle adjustment assembly and the first length adjustment assembly both include positioning reference surfaces distributed along the circumference of a sector.

8. The device for adjusting the posture of a bent pipe according to claim 1, characterized in that: The positioning groove is an annular positioning groove.

9. The device for adjusting the posture of a bent pipe according to claim 1, characterized in that: The fastening assembly at least includes a gasket and a screw.

10. A method for adjusting the posture of a bent pipe of a linear split Stirling refrigerator, characterized in that: The adjustment method uses the bend attitude adjustment device according to any one of claims 1 to 9 to adjust the bend attitude of the connecting pipe of the linear split Stirling refrigerator; The Stirling refrigerator comprises a compression unit, an expansion unit and connecting pipes respectively connected to the compression unit and the expansion unit; The adjustment method comprises: The compression unit is embedded in the positioning groove of the fixed base, and the shape and size of the positioning groove match the shape and size of the compression unit; The compression unit is fixed to the connecting pipe interface of the fixed base by cooperating with the fixing base through the fastening assembly, and the axial center line of the connecting pipe is perpendicular to the first surface; In the case where the preset bending process path information includes at least three bending sections with different postures, the connecting pipe is cooperatively adjusted through the first adjustment component, the second adjustment component and the third adjustment component to meet the preset conditions.

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