A pipe winding device for a refrigerator evaporator housing

Abstract

The present application relates to the technical fields of refrigeration equipment manufacturing, in particular to a pipe winding device for refrigerator evaporator shell, which is used for winding of refrigerator evaporator pipe material, comprising a first chassis, a moving plate body, a second chassis, a first box, a second box, a mold connecting plate, a mounting frame, a translation rotation mechanism, an adjusting mechanism and a contraction expansion mechanism, the top surface of the first chassis is connected with the translation rotation mechanism, and the bottom surface of the translation rotation mechanism is connected with the moving plate body. The present application can provide back and forth translation effect for the moving plate by driving the translation rotation mechanism, and can realize rotation effect for the second chassis by driving the translation rotation mechanism, thereby providing synchronous translation rotation effect for the first box and the second box. The winding mode of synchronous translation and rotation can eliminate torsional stress, so that the contact between the pipe material and the refrigerator evaporator shell is more close, thereby improving the heat conduction efficiency, and the appearance is neat, which can reduce subsequent arrangement process.

Description

Technical Field

[0001] This invention relates to the field of refrigeration equipment manufacturing technology, specifically to a pipe winding device for the outer shell of a refrigerator evaporator. Background Technology

[0002] The tubing wound around the refrigerator evaporator is a key throttling device in the refrigeration system. Its core function is to throttle and reduce pressure and control the refrigerant flow. The tubing creates conditions for the refrigerant to evaporate and absorb heat in the evaporator. When winding tubing around the refrigerator evaporator, this tubing winding device for the refrigerator evaporator shell can be used to achieve the winding effect.

[0003] There are generally two methods for winding pipes on the outer shell of refrigerator evaporators. One is to use manual methods, where the pipes are manually wound onto the evaporator shell. This manual method is time-consuming and results in low winding efficiency. The other method is to use automated equipment. However, commercially available automated winding equipment usually uses an in-situ rotating mold to wind the pipes. In this method, the pipes twist 360 degrees with each turn. This can lead to poor adhesion between the pipe wall and the evaporator shell when the pipe material is soft. When the rotation speed is not synchronized, the pitch can vary, resulting in local overlap or excessive gaps, which affects heat exchange efficiency.

[0004] To address this, a pipe winding device for the outer shell of a refrigerator evaporator is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a pipe winding device for a refrigerator evaporator shell. A driving translation and rotation mechanism provides a back-and-forth translational effect for the moving plate, and also enables the rotation of the second base frame, thereby providing synchronous translation and rotation for the first and second housings. An adjustment mechanism allows for the joint movement of the first and second housings. The positional adjustment of the first and second housings accommodates evaporator shells of different sizes. Furthermore, a driving expansion and contraction mechanism provides convenient space for placing and removing the evaporator shell. When winding pipes using this device, the synchronous translational and rotational winding method eliminates torsional stress, resulting in a tighter contact between the pipes and the refrigerator evaporator shell, thereby improving heat transfer efficiency and producing a neat appearance, reducing subsequent finishing processes.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A pipe winding device for a refrigerator evaporator shell, used for winding refrigerator evaporator pipes, includes a first base frame, a moving plate body, a second base frame, a first box, a second box, a mold connecting plate, a mounting frame, a translation and rotation mechanism, an adjustment mechanism, and a shrinking and expanding mechanism. The top surface of the first base frame is connected to the translation and rotation mechanism, which is connected to the bottom surface of the moving plate body. The translation and rotation mechanism is mounted to the bottom surface of the mold connecting plate, and the top surface of the mold connecting plate is mounted to the bottom surface of the mounting frame. The top surface of the mounting frame is connected to the bottom surface of the second base frame, and the top surface of the second base frame is mounted to the adjustment mechanism. The adjustment mechanism is mounted to the first box and the second box and is located between the second base frame and the first box. The first box and the second box are provided with shrinking and expanding mechanisms. When the translation and rotation mechanism is activated, it drives the moving plate body to translate on the first base frame and directly drives the second base frame to rotate. When the second base frame rotates, it directly drives the adjustment mechanism and the first and second boxes to rotate synchronously. When the adjustment mechanism is driven, it drives the first and second boxes to move.

[0008] Preferably, the translational rotation mechanism includes a first servo motor, a first drive gear, a helical rack, a first slide, a first linear guide, a second drive gear, a driven gear, a slewing bearing, and a second servo motor. The first servo motor is mounted inside the first base frame. One end of the shaft of the first servo motor is connected to the inside of the first drive gear. The first drive gear is located at the bottom of the motion plate body. The helical rack is mounted inside the motion plate body. The tooth surface of the first drive gear meshes with the tooth surface of the helical rack. The bottom surface of the motion plate body is mounted to the first slide. The top surface of the first base frame is mounted to the first linear guide. The first linear guide is mounted to the first slide.

[0009] Preferably, the bottom surface of the motion plate body is mounted to the second servo motor, one end of the rotating shaft of the second servo motor is connected to the inside of the second drive gear, the second drive gear is located on the top surface of the motion plate body, the motion plate body is mounted to the outer periphery of the slewing bearing, the outer periphery of the slewing bearing is connected to the inside of the driven gear, the driven gear is located on the top surface of the motion plate body, and the tooth surface of the driven gear meshes with the tooth surface of the second drive gear, and the top surface of the slewing bearing is mounted to the bottom surface of the mold connecting plate.

[0010] Preferably, the adjusting mechanism includes a first support bearing seat, a first fixed bearing seat, a first bidirectional threaded screw, a length movement plate, a first width copper nut, a second linear guide rail, a second slide, a second support bearing seat, a second fixed bearing seat, a second bidirectional threaded screw, a width movement plate, a second width copper nut, a third linear guide rail, and a third slide. The top surface of the second base frame is mounted on the bottom surface of the first support bearing seat, and the top surface of the second base frame is mounted on the bottom surface of the first fixed bearing seat. The interior of the first support bearing seat is sleeved with the outer periphery of the first bidirectional threaded screw. There are two first fixed bearing seats, which are symmetrically distributed around the longitudinal centerline of the first support bearing seat. The outer periphery of both ends of the first bidirectional threaded screw is sleeved inside the first fixed bearing seat. The outer periphery of the first bidirectional threaded screw is sleeved with the inner periphery of the first width copper nut. There are two first width copper nuts, which are symmetrically distributed around the longitudinal centerline of the first support bearing seat. There are two length movement plates, which are respectively mounted on the top of the two first width copper nuts.

[0011] Preferably, the top of the length movement plate is installed with the bottom of the second support bearing seat, and the top of the length movement plate is installed with the bottom of the second fixed bearing seat. There are two second fixed bearing seats, which are symmetrically distributed around the transverse center line of the second support bearing seat. The inside of the second support bearing seat is sleeved with the outer periphery of the second bidirectional threaded screw. The outer periphery of the second bidirectional threaded screw is sleeved with the inner periphery of the second width copper nut. There are two second width copper nuts, which are symmetrically distributed around the transverse center line of the second support bearing seat. The outer periphery of both ends of the second bidirectional threaded screw is sleeved with the inside of the second fixed bearing seat. There are two width movement plates, which are respectively installed on the top surface of the two second width copper nuts.

[0012] Preferably, the top surface of the second base frame is mounted on the bottom surface of the second linear guide rail, the second linear guide rail is symmetrically distributed around the transverse center line of the second base frame, the second linear guide rail is connected to the second slide block, the top surface of the second slide block is mounted on the bottom surface of the length motion plate, the top surface of the length motion plate is mounted on the bottom surface of the third linear guide rail, the third linear guide rail is connected to the third slide block, and the top surface of the third slide block is mounted on the bottom surface of the width motion plate.

[0013] Preferably, the expansion / contraction mechanism includes a first pad, a second pad, a first thin cylinder, a first guide post, a first end plate, a second end plate, a second thin cylinder, and a second guide post. The first housing is installed inside the first pad, the back of the first pad is installed on the first thin cylinder, the first pad is installed on the first guide post, one end of the first guide post drive post is connected to the back of the first end plate, and there are six first guide posts, with each pair forming a pair, forming three pairs, and they are evenly distributed on the first pad. The second housing is installed inside the second pad, the back of the second pad is installed on the second thin cylinder, the second pad is installed on the second guide post, one end of the second guide post drive post is connected to the back of the second end plate, and there are four second guide posts, which are symmetrically distributed in pairs around the transverse centerline of the second housing. Both the first housing and the second housing are symmetrically distributed around the transverse centerline of the second base frame.

[0014] Preferably, there are two first boxes and two first end plates, and a first width patch plate connects the first end plates. There are two second boxes and two second end plates, and a second width patch plate connects the second end plates. A third width patch plate connects the second boxes, and the third width patch plate is located on top of the second width patch plate. A length patch plate connects the first box and the second box, and there are two length patch plates, which are symmetrically distributed around the transverse center line of the second base frame.

[0015] Preferably, both ends of the first bidirectional threaded screw and the second bidirectional threaded screw are fixedly connected to locking blocks. One end of the first bidirectional threaded screw is locked to a throttle handle, and a locking groove is provided on the side of the throttle handle, and the inside of the locking groove is locked to the locking block.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: When the present invention is applied to the pipe winding process of the refrigerator evaporator shell, it is necessary to manually fit and fix the evaporator shell onto the first and second housings during the pipe winding process. At this time, the expansion and contraction mechanism controls the first and second end plates to contract, increasing the placement space for the evaporator shell during fitting, thus making it easier to place. Then, the expansion and contraction mechanism is driven again to control the first and second end plates to expand outward, thereby supporting the evaporator shell from the inside out and fixing it onto the first and second housings. The expansion and contraction mechanism makes it easier to install and remove the evaporator shell, and when installing evaporator shells of different sizes, the mechanism can be adjusted... The segmented structure drives the first and second housings to shift, thus adapting to different evaporator shell sizes. During the winding of the tubing onto the evaporator shell, a driving translation and rotation mechanism directly provides a back-and-forth translation effect to the moving plate. This mechanism also allows for the rotation of the second base frame, providing synchronized translation and rotation for the first and second housings. This synchronized translation and rotation winding method eliminates torsional stress, allowing the tubing to maintain a natural state, resulting in better uniformity of the tubing wall thickness, ensuring long-term reliability, and more precise pitch control. This leads to tighter contact between the tubing and the refrigerator evaporator shell, improving heat transfer efficiency and resulting in a neater appearance, reducing subsequent finishing processes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the motion plate body in this invention;

[0019] Figure 3 This is a schematic diagram of the mounting bracket in this invention;

[0020] Figure 4 This is a schematic diagram of the mold connecting plate in this invention;

[0021] Figure 5 This is a schematic diagram of the structure of the first linear guide rail in this invention;

[0022] Figure 6 This is a schematic diagram of the length supplement plate in this invention;

[0023] Figure 7 This is a schematic diagram of the structure of the second base frame in this invention;

[0024] Figure 8 This is a schematic diagram of the length motion plate in this invention;

[0025] Figure 9This is a schematic diagram of the structure of the rotary handle in this invention;

[0026] Figure 10 This is a schematic diagram of the structure of the first box in this invention;

[0027] Figure 11 This is a schematic diagram of the structure of the second end plate in this invention.

[0028] In the diagram: 1. First base frame; 2. Motion plate body; 3. Second base frame; 4. First housing; 5. Second housing; 6. Translation and rotation mechanism; 601. First servo motor; 602. First drive gear; 603. Helical rack; 604. First slide; 605. First linear guide; 606. Second drive gear; 607. Driven gear; 608. Slewing bearing; 609. Second servo motor; 7. Mold connecting plate; 8. Mounting bracket; 9. Adjustment mechanism; 901. First support bearing seat; 902. First fixed bearing seat; 903. First bidirectional threaded screw; 904. Length motion plate; 905. First width copper nut; 906. Second linear guide; 907. 908. Second slide; 909. Second support bearing seat; 910. Second fixed bearing seat; 911. Second bidirectional threaded screw; 912. Width movement plate; 913. Second width copper nut; 914. Third linear guide rail; 915. Third slide; 10. First width supplement plate; 11. Length supplement plate; 12. Second width supplement plate; 13. Third width supplement plate; 14. Expansion / contraction mechanism; 1401. First pad; 1402. Second pad; 1403. First thin cylinder; 1404. First guide post; 1405. First end plate; 1406. Second end plate; 1407. Second thin cylinder; 1408. Second guide post; 15. Throttle; 16. Slot; 17. Locking block. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1 to 6 The present invention provides a pipe winding device for the outer shell of a refrigerator evaporator, the technical solution of which is as follows:

[0031] As one embodiment of the present invention, refer to Figures 1 to 11A pipe winding device for the outer shell of a refrigerator evaporator, used for winding refrigerator evaporator pipes, includes a first base frame 1, a moving plate body 2, a second base frame 3, a first housing 4, a second housing 5, a mold connecting plate 7, a mounting bracket 8, a translational and rotating mechanism 6, an adjusting mechanism 9, and a shrinking and expanding mechanism 14. The top surface of the first base frame 1 is connected to the translational and rotating mechanism 6, which is connected to the bottom surface of the moving plate body 2 and mounted on the bottom surface of the mold connecting plate 7. By driving the translational and rotating mechanism 6, the moving plate body 2 can be translated, and simultaneously the mold connecting plate 7 can be rotated. The top surface of the mold connecting plate 7 is mounted on the bottom surface of the mounting bracket 8, which is connected to the bottom surface of the second base frame 3. When the mold connecting plate 7 rotates, it can directly drive the second base frame 3 to rotate. The top surface of the second base frame 3 is mounted on the adjusting mechanism 9, which is mounted on the first housing 4 and the second housing 5, and the adjusting mechanism 9 is located on the second base frame 3. When the adjustment mechanism 9 is driven, the first box 4 and the second box 5 can be displaced, thereby changing the distance between them. The adjustment mechanism 9 can then be used to adjust the first box 4 and the second box 5 to accommodate refrigerator evaporator shells of different sizes. The first box 4 and the second box 5 are equipped with a shrinking / expanding mechanism 14. Driving the shrinking / expanding mechanism 14 directly drives the first end plate 1405 and the second end plate 1406 within it to move. During the displacement process, the first end plate 1405 and the second end plate 1406 provide greater convenience for installing or removing the evaporator shell. When the translation and rotation mechanism 6 is activated, it drives the moving plate body 2 to translate on the first base frame 1 and directly drives the second base frame 3 to rotate. When the second base frame 3 rotates, it directly drives the adjustment mechanism 9 and the first box 4 and the second box 5 to rotate synchronously. When the adjustment mechanism 9 is driven, it moves the first box 4 and the second box 5.

[0032] As one embodiment of the present invention, refer to Figures 1 to 6The translation and rotation mechanism 6 includes a first servo motor 601, a first drive gear 602, a helical rack 603, a first slide block 604, a first linear guide rail 605, a second drive gear 606, a driven gear 607, a slewing bearing 608, and a second servo motor 609. The first base frame 1 is internally mounted with the first servo motor 601, which can fix the first servo motor 601 and ensure its stability. One end of the shaft of the first servo motor 601 is internally connected to the first drive gear 602, which is located on the motion plate body. 2. At the bottom, the inner side of the motion plate body 2 is mounted with a helical rack 603. The tooth surface of the first drive gear 602 meshes with the tooth surface of the helical rack 603. The first servo motor 601 can directly drive the first drive gear 602 to rotate. During the rotation of the first drive gear 602, the helical rack 603 will move on the tooth surface of the first drive gear 602, thereby directly driving the motion plate body 2 to perform translational motion. The bottom surface of the motion plate body 2 is mounted with a first slide block 604, and the top surface of the first base frame 1 is mounted with a first linear guide rail 605. The first linear guide rail 605 and the first slide block 604 are connected. The motion plate body 2 and the first base frame 1 are connected by a first linear guide rail 605 and a first slide block 604. This provides an angle limiting effect for the motion plate body 2, restricting its movement to the horizontal direction and ensuring its stability during movement. The bottom surface of the motion plate body 2 is mounted to a second servo motor 609. When the motion plate body 2 moves, it directly drives the second servo motor 609 to follow the movement of the motion plate body 2. One end of the shaft of the second servo motor 609 is connected to the inside of a second drive gear 606, which is located on the motion plate body 2. On the top surface, the second servo motor 609 can directly drive the second drive gear 606 to rotate. The motion plate body 2 is installed on the outer periphery of the slewing bearing 608. The outer periphery of the slewing bearing 608 is connected to the inside of the driven gear 607. The driven gear 607 is located on the top surface of the motion plate body 2, and the tooth surface of the driven gear 607 meshes with the tooth surface of the second drive gear 606. The top surface of the slewing bearing 608 is installed on the bottom surface of the mold connecting plate 7. When the second drive gear 606 rotates, it can directly drive the driven wheel to rotate. When the driven wheel rotates, it can directly drive the slewing bearing 608 and the mold connecting plate 7 to rotate synchronously.

[0033] As one embodiment of the present invention, refer to Figure 1 , Figure 6 , Figure 7 , Figure 8 and Figure 9The adjusting mechanism 9 includes a first support bearing seat 901, a first fixed bearing seat 902, a first bidirectional threaded screw 903, a length movement plate 904, a first width copper nut 905, a second linear guide rail 906, a second slide block 907, a second support bearing seat 908, a second fixed bearing seat 909, a second bidirectional threaded screw 910, a width movement plate 911, a second width copper nut 912, a third linear guide rail 913, and a third slide block 914. The top surface of the second base frame 3 is mounted on the bottom surface of the first support bearing seat 901, and the top surface of the second base frame 3 is mounted on the bottom surface of the first fixed bearing seat 902. The interior of the first support bearing seat 901 is sleeved with the outer periphery of the first bidirectional threaded screw 903. The bearing housing 901 provides a fixing effect for the first bidirectional threaded screw 903 and ensures the rotation of the first bidirectional threaded screw 903. There are two first fixed bearing housings 902, symmetrically distributed around the longitudinal centerline of the first supporting bearing housing 901. Both ends of the first bidirectional threaded screw 903 are sleeved inside the first fixed bearing housings 902. Thanks to the first fixed bearing housings 902, the first bidirectional threaded screw 903 is further fixed in position, ensuring its stability during rotation. The outer periphery of the first bidirectional threaded screw 903 is sleeved with the inner periphery of two first-width copper nuts 905. Two length-moving plates 904 are symmetrically distributed along the longitudinal centerline of the first support bearing seat 901. Each length-moving plate 904 is mounted on top of one of the two first-width copper nuts 905. The top of each length-moving plate 904 is installed with the bottom of the second support bearing seat 908, and the top of each length-moving plate 904 is installed with the bottom of the second fixed bearing seat 909. Two second fixed bearing seats 909 are symmetrically distributed along the transverse centerline of the second support bearing seat 908. The interior of the second support bearing seat 908 is sleeved with the outer periphery of the second bidirectional threaded screw 910. The second support bearing seat 908 provides a fixing effect for the second bidirectional threaded screw 910 and ensures the stability of the second bidirectional threaded screw. The rotation effect of 910, and based on the second fixed bearing seat 909, can further provide a positional fixation effect for the second bidirectional threaded screw 910, ensuring the stability of the second bidirectional threaded screw 910 during rotation. The outer periphery of the second bidirectional threaded screw 910 is sleeved with the inner periphery of the second width copper nut 912. There are two second width copper nuts 912, which are symmetrically distributed around the transverse centerline of the second support bearing seat 908. The outer periphery of both ends of the second bidirectional threaded screw 910 is sleeved with the inside of the second fixed bearing seat 909. There are two width moving plates 911, which are respectively installed on the top surface of the two second width copper nuts 912. The top surface of the second base frame 3 is installed with the bottom surface of the second linear guide rail 906.The second linear guide rails 906 are symmetrically distributed around the transverse centerline of the second base frame 3. The second linear guide rails 906 are connected to the second slide block 907. The top surface of the second slide block 907 is mounted on the bottom surface of the length motion plate 904. When the first bidirectional threaded screw 903 rotates, thanks to the angle limiting effect provided by the second slide block 907 and the second linear guide rails 906 for the length motion plate 904, the length motion plate 904 is prevented from rotating, thereby ensuring the stability of the first width copper nut 905. At this time, the first bidirectional threaded screw 903 can directly drive the first... The width copper nut 905 moves on the first bidirectional threaded screw 903, thereby directly driving the length motion plate 904 to achieve a moving effect. Based on the thread of the first bidirectional threaded screw 903, the two length motion plates 904 can achieve an expansion or contraction effect. The top surface of the length motion plate 904 is installed with the bottom surface of the third linear guide 913. The third linear guide 913 is connected to the third slide 914. The top surface of the third slide 914 is installed with the bottom surface of the width motion plate 911. When the second bidirectional threaded screw 910 rotates, it benefits from the third slide 914 and... The third linear guide 913 provides an angle limiting effect for the width motion plate 911, ensuring that the width motion plate 911 does not rotate, thereby ensuring the stability of the second width copper nut 912. At this time, when the second bidirectional threaded screw 910 rotates, it can directly drive the second width copper nut 912 to move on the second bidirectional threaded screw 910, thereby directly driving the width motion plate 911 to achieve a moving effect. Based on the thread of the second bidirectional threaded screw 910, the two width motion plates 911 can achieve an expansion or contraction effect. The first bidirectional threaded screw 903 and the second bidirectional threaded screw... Both ends of the lead screw 910 are fixedly connected to locking blocks 17. One end of the first bidirectional threaded lead screw 903 is engaged with a throttle 15. A slot 16 is provided on the side of the throttle 15, and the slot 16 engages with the locking blocks 17. When rotating the first bidirectional threaded lead screw 903 or the second bidirectional threaded lead screw 910, the throttle 15 can be directly engaged with the locking blocks 17 of the first bidirectional threaded lead screw 903 or the second bidirectional threaded lead screw 910 via the slot 16. At this time, the throttle 15 can be manually rotated to rotate the first bidirectional threaded lead screw 903 or the second bidirectional threaded lead screw 910.

[0034] As one embodiment of the present invention, refer to Figure 1 , Figure 6 , Figure 10 and Figure 11The expansion / contraction mechanism 14 includes a first pad 1401, a second pad 1402, a first thin cylinder 1403, a first guide post 1404, a first end plate 1405, a second end plate 1406, a second thin cylinder 1407, and a second guide post 1408. The first housing 4 is installed inside the first pad 1401. The back of the first pad 1401 is installed on the first thin cylinder 1403. The first pad 1401 is also installed on the first guide post 1404. One end of the drive post of the first guide post 1404 is connected to the back of the first end plate 1405. The first thin cylinder 1403 can drive the first guide post 1404 to extend or retract, thereby directly displacing the first end plate 1405. There are six guide pillars 1404, arranged in pairs to form three pairs, and they are evenly distributed on the first pad 1401. The second housing 5 is installed inside the second pad 1402. The back of the second pad 1402 is installed on the second thin cylinder 1407. The second pad 1402 is installed on the second guide pillars 1408. One end of the drive column of the second guide pillar 1408 is connected to the back of the second end plate 1406. The second thin cylinder 1407 can drive the second guide pillar 1408 to extend and retract, thereby directly driving the second end plate 1406 to move. There are four second guide pillars 1408, which are symmetrically distributed in pairs around the transverse centerline of the second housing 5. The first housing 4 and the second... Both housings 5 ​​are symmetrically distributed around the transverse centerline of the second base frame 3. By operating the expansion and contraction mechanism 14, the positions of the first end plate 1405 and the second end plate 1406 in the expansion and contraction mechanism 14 can be driven. Then, when fitting the refrigerator evaporator shell onto the first housing 4 and the second housing 5, the first end plate 1405 and the second end plate 1406 can be contracted, thus creating fitting space and making it easier to fit the refrigerator evaporator shell. After the refrigerator evaporator shell is fitted, the first end plate 1405 and the second end plate 1406 can be driven to expand outward, thereby pressing and fixing the refrigerator evaporator shell from the inside out. The expansion and contraction mechanism 14 makes it easier to install or remove the refrigerator evaporator shell. The first housing 4 and the first... There are two end plates 1405, and a first width patch 10 connects the first end plates 1405. There are two second housings 5 ​​and two second end plates 1406, and a second width patch 12 connects the second end plates 1406. A third width patch 13 connects the second housings 5, and the third width patch 13 is located on top of the second width patch 12. A length patch 11 connects the first housing 4 and the second housing 5. There are two length patches 11, and they are symmetrically distributed around the transverse center line of the second base frame 3. The length patch 11 can fill the space between the first housing 4 and the second housing 5, and the first width patch 10 can fill the space between the symmetrically distributed first housings 4.The second-width expansion plate 12 and the third-width expansion plate 13 can be used to fill the space between the symmetrically distributed second housings 5, thereby ensuring that the outer walls of the first housing 4 and the second housing 5 are flat. This increases the contact area between the expansion mechanism 14 and the refrigerator evaporator shell, further improving the stability of the expansion mechanism 14 in fixing the refrigerator evaporator shell.

[0035] Working principle: When winding the tubing onto the refrigerator evaporator casing, the evaporator casing needs to be manually fitted onto the first housing 4 and the second housing 5. Before fitting the evaporator casing, the adjustment mechanism 9 can be used to adjust the position of the first housing 4 and the second housing 5, ensuring that their positions match the current size of the refrigerator evaporator casing. Then, when fitting the evaporator casing, the expansion and contraction mechanism 14 can be used to retract the first end plate 1405 and the second end plate 1406, making it easier to fit the evaporator casing onto the first housing 4 and the second housing 5. Afterward, the first end plate 1405 and the second end plate 1406 can be expanded outward again, thus squeezing and fixing the evaporator casing from the inside, thereby securing the evaporator casing to the first housing. 4. On the second housing 5, the pipes can then be wound around the evaporator shell. At this time, one end of the pipe can be fixed to the outer circumference of the evaporator shell. Then, by driving the translation and rotation mechanism 6, the moving plate can be directly provided with a back-and-forth translation effect. The second base 3 can also be rotated by driving the translation and rotation mechanism 6, thereby providing a synchronous translation and rotation effect for the first housing 4 and the second housing 5, which in turn drives the refrigerator evaporator shell to perform synchronous translation and rotation. At this time, the pipes can be wound around the outer circumference of the refrigerator evaporator shell. The synchronous translation and rotation winding method can eliminate torsional stress, keep the pipes in a natural state, thereby making the pipe wall thickness more uniform, ensuring the reliability of long-term use, and making the pitch control more precise, so that the contact between the pipes and the refrigerator evaporator shell is tighter.

[0036] Specifically, when adapting to the refrigerator evaporator shell, the length can be adjusted first by rotating the first and second lead screws in the adjustment mechanism 9. During length adjustment, the first bidirectional threaded lead screw 903 can be directly rotated. During rotation, the second slide 907 and the second linear guide 906 provide angle limiting for the length movement plate 904, ensuring that the length movement plate 904 does not rotate. This ensures the stability of the first width copper nut 905. Therefore, when the first bidirectional threaded lead screw 903 rotates, it directly drives the first width copper nut 905 to move on the first bidirectional threaded lead screw 903, thereby directly driving the length movement plate 904 to move. When the threaded rod 903 is rotated in both forward and reverse directions, it can expand or contract the two length-moving plates 904, thereby adjusting the distance between the first housing 4 and the second housing 5 until it matches the length of the refrigerator evaporator shell. Then, the second bidirectional threaded screw 910 is rotated. During the rotation of the second bidirectional threaded screw 910, the third slide 914 and the third linear guide 913 provide angle limiting for the width-moving plate 911, ensuring that the width-moving plate 911 does not rotate. This ensures the stability of the second width copper nut 912. When the second bidirectional threaded screw 910 rotates, it can directly drive the second width copper nut 912 to move on the second bidirectional threaded screw 910, thereby directly driving the width-moving plate 904. 11. To achieve the movement effect, when the second bidirectional threaded screw 910 is rotated in both forward and reverse directions, the two width-moving plates 911 can expand or contract, thereby adjusting the distance between the two symmetrically distributed first boxes 4 and simultaneously adjusting the distance between the two symmetrically distributed second boxes 5. This allows adjustment based on the dimensions of the refrigerator evaporator shell. Later, when fitting the evaporator shell, the first end plate 1405 and the second end plate 1406 in the expansion / contraction mechanism 14 can be driven. At this time, the first thin cylinder 1403 and the second thin cylinder 1407 respectively drive the first end plate 1405 and the second end plate 1406 to move. During fitting, the first end plate 1405 and the second end plate 1406 can be driven to contract. To facilitate the fitting of the refrigerator evaporator casing, the first end plate 1405 and the second end plate 1406 are then driven to expand outward, pressing from the inside of the refrigerator evaporator casing outward, thereby fixing the evaporator casing. When rotating and winding the refrigerator evaporator casing, the first servo motor 601 drives the first drive gear 602 through the translation and rotation mechanism 6. With the cooperation of the helical rack 603, the moving plate body 2 can be translated, thereby directly driving the first box 4 and the second box 5 above the moving plate body 2 to translate. Then, the second servo motor 609 drives the second drive gear 606 to rotate, and with the cooperation of the driven wheel, the slewing bearing 608 can be rotated, thereby driving the second base frame 3 connected to the mold connecting plate 7 to rotate synchronously.At this point, the first compartment 4 and the second compartment 5 can be synchronously translated and rotated, causing the refrigerator evaporator casing to translate, rotate, and wind around the piping.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe winding device for a refrigerator evaporator casing, used for winding refrigerator evaporator pipes, characterized in that: The system includes a first base frame (1), a motion plate body (2), a second base frame (3), a first housing (4), a second housing (5), a mold connecting plate (7), a mounting frame (8), a translation and rotation mechanism (6), an adjustment mechanism (9), and a shrinking and expanding mechanism (14). The top surface of the first base frame (1) is connected to the translation and rotation mechanism (6), the translation and rotation mechanism (6) is connected to the bottom surface of the motion plate body (2), the translation and rotation mechanism (6) is mounted to the bottom surface of the mold connecting plate (7), the top surface of the mold connecting plate (7) is mounted to the bottom surface of the mounting frame (8), the top surface of the mounting frame (8) is connected to the bottom surface of the second base frame (3), and the top surface of the second base frame (3) is connected to the adjustment mechanism (9). The adjustment mechanism (9) is installed in conjunction with the first housing (4) and the second housing (5), and the adjustment mechanism (9) is located between the second base frame (3) and the first housing (4). The first housing (4) and the second housing (5) are provided with a shrinking and expanding mechanism (14). When the translation and rotation mechanism (6) is started, it drives the motion plate body (2) to translate on the first base frame (1) and directly drives the second base frame (3) to rotate. When the second base frame (3) rotates, it directly drives the adjustment mechanism (9) and the first housing (4) and the second housing (5) to rotate synchronously. When the adjustment mechanism (9) is driven, it drives the first housing (4) and the second housing (5) to move.

2. The pipe winding device for the outer shell of a refrigerator evaporator according to claim 1, characterized in that: The translation and rotation mechanism (6) includes a first servo motor (601), a first drive gear (602), a helical rack (603), a first slide (604), a first linear guide (605), a second drive gear (606), a driven gear (607), a slewing bearing (608), and a second servo motor (609). The first base frame (1) is internally mounted with the first servo motor (601), and one end of the shaft of the first servo motor (601) is connected to the first drive gear (609). 2) Internally connected, the first drive gear (602) is located at the bottom of the motion plate body (2), the inner side of the motion plate body (2) is installed with the helical rack (603), the tooth surface of the first drive gear (602) meshes with the tooth surface of the helical rack (603), the bottom surface of the motion plate body (2) is installed with the first slide (604), the top surface of the first base frame (1) is installed with the first linear guide (605), and the first linear guide (605) is installed with the first slide (604).

3. The pipe winding device for the outer shell of a refrigerator evaporator according to claim 2, characterized in that: The bottom surface of the motion plate body (2) is mounted to the second servo motor (609). One end of the shaft of the second servo motor (609) is connected to the inside of the second drive gear (606). The second drive gear (606) is located on the top surface of the motion plate body (2). The motion plate body (2) is mounted to the outer periphery of the slewing bearing (608). The outer periphery of the slewing bearing (608) is connected to the inside of the driven gear (607). The driven gear (607) is located on the top surface of the motion plate body (2), and the tooth surface of the driven gear (607) meshes with the tooth surface of the second drive gear (606). The top surface of the slewing bearing (608) is mounted to the bottom surface of the mold connecting plate (7).

4. The pipe winding device for the outer shell of a refrigerator evaporator according to claim 1, characterized in that: The adjusting mechanism (9) includes a first support bearing seat (901), a first fixed bearing seat (902), a first bidirectional threaded screw (903), a length movement plate (904), a first width copper nut (905), a second linear guide rail (906), a second slide (907), a second support bearing seat (908), a second fixed bearing seat (909), a second bidirectional threaded screw (910), a width movement plate (911), a second width copper nut (912), a third linear guide rail (913), and a third slide (914). The top surface of the second base frame (3) is mounted to the bottom surface of the first support bearing seat (901), and the top surface of the second base frame (3) is mounted to the bottom surface of the first fixed bearing seat (902). The bearing housing (901) is sleeved with the outer periphery of the first bidirectional threaded screw (903). There are two first fixed bearing housings (902), which are symmetrically distributed with respect to the longitudinal center line of the first support bearing housing (901). The outer periphery of both ends of the first bidirectional threaded screw (903) is sleeved with the inner periphery of the first fixed bearing housing (902). The outer periphery of the first bidirectional threaded screw (903) is sleeved with the inner periphery of the first width copper nut (905). There are two first width copper nuts (905), which are symmetrically distributed with respect to the longitudinal center line of the first support bearing housing (901). There are two length movement plates (904), which are respectively installed on the top of the two first width copper nuts (905).

5. The pipe winding device for the outer shell of a refrigerator evaporator according to claim 4, characterized in that: The top of the length motion plate (904) is installed with the bottom of the second support bearing seat (908), and the top of the length motion plate (904) is installed with the bottom of the second fixed bearing seat (909). There are two second fixed bearing seats (909), which are symmetrically distributed with respect to the transverse center line of the second support bearing seat (908). The inside of the second support bearing seat (908) is sleeved with the outer circumference of the second bidirectional threaded screw (910). The outer circumference of the second bidirectional threaded screw (910) is sleeved with the inner circumference of the second width copper nut (912). There are two second width copper nuts (912), which are symmetrically distributed with respect to the transverse center line of the second support bearing seat (908). The outer circumferences at both ends of the second bidirectional threaded screw (910) are sleeved with the inside of the second fixed bearing seat (909). There are two width motion plates (911), which are respectively installed on the top surface of the two second width copper nuts (912).

6. The pipe winding device for the outer shell of a refrigerator evaporator according to claim 4, characterized in that: The top surface of the second base frame (3) is installed with the bottom surface of the second linear guide (906). The second linear guide (906) is symmetrically distributed with respect to the transverse center line of the second base frame (3). The second linear guide (906) is connected to the second slide (907). The top surface of the second slide (907) is installed with the bottom surface of the length motion plate (904). The top surface of the length motion plate (904) is installed with the bottom surface of the third linear guide (913). The third linear guide (913) is connected to the third slide (914). The top surface of the third slide (914) is installed with the bottom surface of the width motion plate (911).

7. The pipe winding device for the outer casing of a refrigerator evaporator according to claim 1, characterized in that: The expansion / contraction mechanism (14) includes a first pad (1401), a second pad (1402), a first thin cylinder (1403), a first guide post (1404), a first end plate (1405), a second end plate (1406), a second thin cylinder (1407), and a second guide post (1408). The first housing (4) is installed inside the first pad (1401), the back of the first pad (1401) is installed on the first thin cylinder (1403), the first pad (1401) is installed on the first guide post (1404), one end of the drive post of the first guide post (1404) is connected to the back of the first end plate (1405), and the number of first guide posts (1404) is... There are six in total, with each pair forming a pair, forming three pairs, and they are evenly distributed on the first pad (1401). The second housing (5) is installed inside the second pad (1402). The back of the second pad (1402) is installed on the second thin cylinder (1407). The second pad (1402) is installed on the second guide post (1408). One end of the drive post of the second guide post (1408) is connected to the back of the second end plate (1406). There are four second guide posts (1408), and they are symmetrically distributed in pairs around the transverse center line of the second housing (5). The first housing (4) and the second housing (5) are both symmetrically distributed around the transverse center line of the second base frame (3).

8. The pipe winding device for the outer casing of a refrigerator evaporator according to claim 7, characterized in that: There are two first boxes (4) and two first end plates (1405), and a first width patch plate (10) is connected between the first end plates (1405). There are two second boxes (5) and two second end plates (1406), and a second width patch plate (12) is connected between the second end plates (1406). A third width patch plate (13) is connected between the second boxes (5), and the third width patch plate (13) is located on top of the second width patch plate (12). A length patch plate (11) is connected between the first box (4) and the second box (5). There are two length patch plates (11), and they are symmetrically distributed with respect to the transverse center line of the second base frame (3).

9. The pipe winding device for the outer casing of a refrigerator evaporator according to claim 4, characterized in that: Both ends of the first bidirectional threaded screw (903) and the second bidirectional threaded screw (910) are fixedly connected with locking blocks (17). One end of the first bidirectional threaded screw (903) is locked with a throttle (15). A slot (16) is opened on the side of the throttle (15), and the slot (16) is locked with the locking block (17).

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