A refrigerator evaporation tube unwinding device

Abstract

The present invention relates to the technical field of refrigerator evaporator tube processing, specifically a refrigerator evaporator tube unwinding device, comprising an unwinding device base, an evaporator tube unwinding disk assembly is arranged on one side of the unwinding device base, and a tension compensation support assembly is arranged in the middle of the unwinding device base, and the beneficial effects are: a tension compensation support assembly is arranged between the evaporator tube unwinding disk assembly and the straightening assembly, and when the evaporator tube unwinding disk is unwinding, the evaporator tube is squeezed inside by the tensioning column on the tensioning adjustment plate, and the unwound evaporator tube is compensated and supported inside by the inner compensation support plate, so that the evaporator tube can be kept taut and introduced into the straightening assembly by the guide roller for straightening, and the tension adjustment plate can rotate around the rear end so that the tensioning column can adapt to the diameter change of the evaporator tube after unwinding, and keep squeezing the evaporator tube to make it taut, and the compensation support plate can cooperate with the tensioning column to keep supporting the inner side of the evaporator tube under the cooperation of the sliding block and the inclined support rod.

Description

Technical Field

[0001] The invention belongs to the technical field of refrigerator evaporator tube processing, and in particular relates to a refrigerator evaporator tube unwinding device. Background Art

[0002] The evaporator tube winding device is used to automatically wind the evaporator tube for condensation on a refrigerator or freezer. The evaporator tube unwinding device is a component of the evaporator tube winding device, which is used to unwind the evaporator tube coil wound into a roll shape. The evaporator tube unwinded by the evaporator tube unwinding device is wound on the refrigerator or freezer after being straightened. Therefore, the operation of the motor on the evaporator tube unwinding device and the straightening of the evaporator tube straightening mechanism need to be synchronized, so that the evaporator tube unwinded by the evaporator tube unwinding device is in a straightened state between the evaporator tube unwinding device and the evaporator tube straightening mechanism, otherwise it will affect the straightening of the evaporator tube straightening mechanism. Under the prior art, it is usually achieved by setting a device for measuring the length of the evaporator tube on the evaporator tube straightening mechanism, and then controlling the servo motor on the evaporator tube unwinding device according to the length of the unwinding evaporator tube. However, this technology cannot take into account the size of the diameter of the evaporator tube coil itself, because the diameter of the evaporator tube coil gradually decreases as the evaporator tube is unwound. Therefore, errors are prone to occur.

[0003] The existing Chinese patent document with publication number CN105032985A proposes an evaporator tube unwinding device, which adopts a spring swing arm mechanism and a swing arm detection mechanism to form a mechanism for detecting whether the current evaporator tube is loose. When the unwound evaporator tube is in a loose state, the turntable drive mechanism is turned off, otherwise the turntable drive mechanism is turned on to rotate the evaporator tube roll on the turntable mechanism for unwinding, thereby making the evaporator tube unwound from the present invention always in a straightened state, and realizing the synchronization between the straightening mechanism and the unwinding mechanism to solve the above problem. However, as a key component, the spring may cause spring fatigue due to long-term repeated force, affecting its elasticity and restoring force, and further affecting the accuracy of detection.

[0004] Therefore, the present invention proposes an evaporator tube unwinding device to solve the problem that the prior art uses a spring swing arm mechanism and a swing arm detection mechanism to form a mechanism for detecting whether the current evaporator tube is loose, which is affected by the spring and leads to poor detection accuracy. The straightening component is changed into a straightening component and arranged on one side of the unwinding component. A tension compensation mechanism is added between the two to cope with the tension change caused by the change of the coil diameter, so that the unwinding evaporator tube is always in a straightened state, which is beneficial to the straightening of the evaporator tube after unwinding. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a refrigerator evaporator tube unwinding device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a refrigerator evaporator tube unwinding device, comprising an unwinding device base, an evaporator tube unwinding disk assembly is arranged on one side of the unwinding device base, a tension compensation support assembly is arranged in the middle of the unwinding device base, and a straightening assembly is arranged on the other side of the unwinding device base, the evaporator tube unwinding disk assembly comprises a fixed seat fixedly mounted on the surface of one side of the unwinding device base, a rotating unwinding disk is rotatably mounted inside the fixed seat, and the tension compensation support assembly comprises a tension adjustment plate, a tensioning column and an inner compensation support plate.

[0007] Preferably, one end of the tensioning adjustment plate is rotatably connected to the side wall of the unwinding device base, a small gear ring is fixedly installed on the outer surface of one end of the tensioning adjustment plate, a small gear ring meshing with the small gear ring is provided on one side of the small gear ring, the small gear ring is rotatably installed on the side wall of the unwinding device base, and an adjusting motor 2 for driving the small gear ring to rotate is fixedly installed behind the side wall of the unwinding device base.

[0008] Preferably, a tensioning column is fixedly installed on the other end of the tensioning adjustment plate, arc-shaped extrusion gaskets are evenly distributed on the outside of the tensioning column, a reset gasket is fixedly installed between the inner surface of the arc-shaped extrusion gasket and the outer surface of the tensioning column, a touch-pressure column is fixedly installed on the middle part of the inner surface of the arc-shaped extrusion gasket, the touch-pressure column passes through the side wall of the tensioning column, a pressure sensor is arranged inside the tensioning column, and the position of the touch-pressure column is adapted to the position of the second adjustment motor.

[0009] Preferably, the inner compensation support plate is arranged below the tensioning adjustment plate, and the inner compensation support plate is fixedly mounted on the side wall of the base of the unwinding device. A sliding block is slidably mounted above the inner compensation support plate, and a limiting spring is arranged on one side of the sliding block, and the limiting spring is sleeved on the outside of the sliding rod of the inner compensation support plate.

[0010] Preferably, an oblique support rod is hingedly installed on the side surface of the sliding block, a compensation support plate is movably installed above the oblique support rod, the compensation support plate is arranged below the tensioning column, a correction guide rod is obliquely distributed on the side surface of the compensation support plate, and an extrusion spherical pad is fixedly installed between the side surface of the correction guide rod and the side surface of the compensation support plate.

[0011] Preferably, a cover is provided on the outer side of the tensioning adjustment plate and the tensioning column, and the cover is hingedly mounted on the side surface of the unwinding device base. Guide rollers are symmetrically arranged on the side of the tensioning adjustment plate close to the straightening assembly. Two groups of guide rollers are rotatably mounted on the side wall of the unwinding device base, one group of guide rollers passes through the middle part of one end of the tensioning adjustment plate, and mutually meshing gears are arranged between the two groups of guide rollers. A driving motor 2 for driving the guide rollers to rotate is fixedly installed behind the side wall of the unwinding device base.

[0012] Preferably, a large gear ring is fixedly installed on the outer surface of the rotating unwinding disk, and a large gear meshing with the large gear ring is arranged on one side of the large gear ring, a driving motor 1 for driving the large gear to rotate is fixedly installed behind the side wall of the unwinding device base, an adjusting motor 1 is fixedly installed behind the side wall of the rotating unwinding disk, an adjusting gear is rotatably installed inside the rotating unwinding disk, the output shaft of the adjusting motor 1 is fixedly connected to the rear end of the rotating shaft of the adjusting gear, a mounting column is fixedly installed in the middle of the front end surface of the rotating unwinding disk, and a baffle is arranged on the outside of the mounting column.

[0013] Preferably, a sliding rack is symmetrically arranged on the outer side of the adjusting gear, and the sliding rack is slidably installed on the inner surface of the rotating unwinding disk, and the inner surface of the rotating unwinding disk is provided with a limiting sliding groove matched with the sliding rack, and an unwinding disk tensioning column is rotatably installed on one end of the sliding rack, and a sliding hole matched with the unwinding disk tensioning column is opened on the surface of the rotating unwinding disk.

[0014] Preferably, the straightening assembly includes a mounting frame fixedly mounted above the base of the unwinding device, a fixed base is fixedly mounted on the bottom of the mounting frame, an adjusting frame is arranged above the interior of the mounting frame, a telescopic rod is fixedly mounted on the upper surface of the mounting frame, and the output end of the telescopic rod is fixedly connected to the upper surface of the adjusting frame.

[0015] Preferably, straightening roller assemblies are provided on the inner sides of the adjustment frame and the fixed base.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By arranging the evaporator tube unwinding disk assembly and the straightening assembly on the same side, the evaporator tube can be straightened after unwinding, and a tension compensation support assembly is arranged between the evaporator tube unwinding disk assembly and the straightening assembly. When the evaporator tube unwinding disk assembly is unwinding, the tensioning column on the tensioning adjustment plate is used to squeeze the evaporator tube inside when unwinding, and the inner compensation support plate is used to compensate and support the unwinding evaporator tube inside, so that the evaporator tube can be kept taut and guided by the guide roller into the straightening assembly for straightening, and the tensioning adjustment plate can rotate around the rear end so that the tensioning column can adapt to the diameter change of the evaporator tube after unwinding. , keep squeezing the evaporator tube to make it taut, the compensation support plate can cooperate with the tensioning column to keep supporting the inner side of the evaporator tube under the cooperation of the sliding block and the inclined support rod, and obtain the extrusion pressure data through the pressure sensor, and adjust the rotation position of the tensioning adjustment plate in time to cope with the tension change caused by the change of the coil diameter, so that the unrolled evaporator tube is always in a straight state, which is beneficial to the straightening of the evaporator tube after unwinding, and solves the problem in the prior art that a mechanism for detecting whether the current evaporator tube is loose, which is composed of a spring swing arm mechanism and a swing arm detection mechanism, is affected by the spring and leads to poor detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall front-end structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure after the cover of the present invention is opened.

[0020] Figure 3 It is a schematic diagram of the overall back-end structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the overall structure of one side of the present invention.

[0022] Figure 5 It is a schematic diagram of the overall top view structure of the present invention.

[0023] Figure 6 It is a schematic diagram of the structure of the main components of the present invention.

[0024] Figure 7 It is a schematic diagram of the rear structure of the rotating unwinding disk of the present invention.

[0025] Figure 8 It is a schematic diagram of the rear structure of the tension compensation support assembly of the present invention.

[0026] Fig. 9 It is a schematic diagram of the front structure of the tension compensation support assembly of the present invention.

[0027] Fig.10 It is a schematic diagram of the front structure of the rotating unwinding disk of the present invention.

[0028] Fig.11 It is a schematic diagram of the comparative structure of the tensioning area adjustment of the tensioning column of the present invention from large to small.

[0029] Fig.12 It is a schematic diagram of the tensioning column structure of the present invention.

[0030] Fig.13 For the present invention Fig.12 A is an enlarged structural diagram of the structure.

[0031] In the figure: 1. unwinding device base; 2. evaporator tube unwinding disk assembly; 21. fixed seat; 22. rotating unwinding disk; 221. mounting column; 222. baffle; 223. large gear ring; 23. driving motor 1; 231. large gear; 24. adjusting motor 1; 241. driving gear; 25. adjusting gear; 26. sliding rack; 27. unwinding disk tensioning column; 271. triangular anti-skid pad; 272. supporting pad; 3. tension compensation support assembly; 31. capping; 32. guide roller; 321. expansion pad; 322. spring; 33. driving motor 2; 3 4. Tensioning adjustment plate; 341. Small gear ring; 342. Adjusting motor 2; 343. Small gear; 35. Tensioning column; 351. Arc extrusion gasket; 3511. Reset gasket; 3512. Touch pressure column; 352. Pressure sensor; 36. Inner compensation support plate; 361. Sliding block; 362. Oblique support rod; 363. Compensation support plate; 3631. Correction guide rod; 3632. Extrusion spherical pad; 364. Limit spring; 4. Straightening assembly; 41. Mounting frame; 42. Fixed base; 43. Adjusting frame; 44. Telescopic rod; 45. Straightening roller assembly. DETAILED DESCRIPTION

[0032] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0033] See also Figures 1 to 13The present invention provides a technical solution: it includes a reeling device base 1, an evaporator tube reeling disc assembly 2 is arranged on one side of the reeling device base 1, a tension compensation support assembly 3 is arranged in the middle of the reeling device base 1, and a straightening assembly 4 is arranged on the other side of the reeling device base 1. The evaporator tube reeling disc assembly 2 includes a fixed seat 21 fixedly installed on the surface of one side of the reeling device base 1, and a rotating reel 22 is rotatably installed inside the fixed seat 21. The tension compensation support assembly 3 includes a tension adjustment plate 34, a tension column 35 and an inner compensation support plate 36. One end of the tension adjustment plate 34 is rotatably connected to the side wall of the reeling device base 1, and a small gear ring 341 is fixedly installed on the outer surface of one end of the tension adjustment plate 34, and one side of the small gear ring 341 is provided with a small gear ring 341. The meshing pinion 343 is rotatably mounted on the side wall of the unwinding device base 1. An adjusting motor 2 342 for driving the pinion 343 to rotate is fixedly mounted behind the side wall of the unwinding device base 1. A tensioning column 35 is fixedly mounted on the other end of the tensioning adjustment plate 34. Arc-shaped extrusion gaskets 351 are evenly distributed on the outside of the tensioning column 35. A reset gasket 3511 is fixedly mounted between the inner surface of the arc-shaped extrusion gasket 351 and the outer surface of the tensioning column 35. A touch-pressure column 3512 is fixedly mounted on the middle of the inner surface of the arc-shaped extrusion gasket 351. The touch-pressure column 3512 runs through the side wall of the tensioning column 35. A pressure sensor 352 is arranged inside the tensioning column 35. The position of the touch-pressure column 3512 matches the position of the adjusting motor 2 342.

[0034] In this embodiment, the evaporator tube unwinding disk assembly 2 is used to install the evaporator tube reel and unwind it. The straightening assembly 4 is arranged on one side of the evaporator tube unwinding disk assembly 2 to straighten the unwound evaporator tube. The tension compensation support assembly 3 is arranged between the evaporator tube unwinding disk assembly 2 and the straightening assembly 4 to mainly provide auxiliary support for the unwound evaporator tube to make it tensioned for easy straightening. The specific auxiliary tensioning method is that the tensioning column 35 squeezes the outer side of the unwound evaporator tube, and the arc-shaped squeezing gasket 351 slides inward under the squeezing force to press the pressure sensor 352 through the touch pressure column 3512. The pressure sensor 3 52 can obtain the extrusion value and provide feedback. The reset gasket 3511 pushes out the arc-shaped extrusion gasket 351 when the evaporator tube is not squeezed, avoiding the error of the pressure sensor 352. As the evaporator tube is continuously unwound, the roll diameter will become smaller and smaller. At this time, the adjustment motor 2 342 starts to work and drives the pinion 343 to rotate. The pinion 343 drives the small gear ring 341 to realize the counterclockwise rotation of the tensioning adjustment plate 34, so that the tensioning column 35 can continue to squeeze the outside of the unwound evaporator tube according to the smaller roll diameter, ensuring that the value fed back by the pressure sensor 352 is consistent, and continuously assisting the tensioning of the evaporator tube unwinding. Example 2

[0035] See also Figures 1 to 13On the basis of the first embodiment, in order to realize the inner side support of the evaporator tube in cooperation with the tensioning column 35 during the unwinding process of the evaporator tube, the present embodiment further proposes that the inner side compensation support plate 36 is arranged below the tensioning adjustment plate 34, the inner side compensation support plate 36 is fixedly installed on the side wall of the unwinding device base 1, a sliding block 361 is slidably installed above the inner side compensation support plate 36, a limiting spring 364 is arranged on one side of the sliding block 361, the limiting spring 364 is sleeved on the outside of the sliding rod of the inner side compensation support plate 36, an oblique support rod 362 is hingedly installed on the side surface of the sliding block 361, a compensation support plate 363 is movably installed above the oblique support rod 362, the compensation support plate 363 is arranged below the tensioning column 35, a correction guide rod 3631 is obliquely distributed on the side surface of the compensation support plate 363, an extrusion spherical pad 3632 is fixedly installed between the side surface of the correction guide rod 3631 and the side surface of the compensation support plate 363,

[0036] The compensating support plate 363 is a spring loaded support plate 364 that is used to hold the evaporator in place until the evaporator is able to rotate relative to the support plate 363. The compensating support plate 363 is a spring loaded support plate 364 that is used to hold the evaporator in place until the evaporator is able to rotate relative to the support plate 363. Example 3

[0037] See also Figures 1 to 13 On the basis of the second embodiment, in order to allow the evaporating tube to be synchronously introduced into the straightening assembly 4 for straightening after unwinding, the present embodiment further proposes that a cover 31 is provided on the outer side of the tensioning adjustment plate 34 and the tensioning column 35, and the cover 31 is hingedly mounted on the side surface of the unwinding device base 1, and a guide roller 32 is symmetrically provided on the side of the tensioning adjustment plate 34 close to the straightening assembly 4, and two groups of guide rollers 32 are rotatably mounted on the side wall of the unwinding device base 1, one group of guide rollers 32 passes through the middle of one end of the tensioning adjustment plate 34, and mutually meshing gears are provided between the two groups of guide rollers 32, and a driving motor 2 33 for driving the guide rollers 32 to rotate is fixedly installed at the rear of the side wall of the unwinding device base 1,

[0038] In this embodiment, the rotation direction and rotation speed of the second driving motor 33 are adapted to the unwinding direction and unwinding speed of the rotating unwinding disk 22, so that the second driving motor 33 drives a group of guide rollers 32 below to rotate. Due to the action of the meshing gears, the upper guide rollers 32 keep rotating in the opposite direction, so that the evaporating tube passing therethrough can be guided into the straightening assembly 4 for straightening, so that the unwinding and straightening are kept synchronous and the occurrence of looseness is reduced. The cover 31 plays a sealing role, but it can also be opened to adjust the evaporating tube for easy use. Example 4

[0039] See also Figures 1 to 13 On the basis of the third embodiment, in order to make the guide roller 32 suitable for evaporation tubes with different diameters, the present embodiment further proposes that expansion pads 321 are evenly distributed on the outer surface of the guide roller 32, and springs 322 are fixedly installed at both ends of the expansion pads 321, and one end of the spring 322 is fixedly connected to the outer surface of the guide roller 32; in the present embodiment, the expansion pad 321 maintains elastic expansion on the outside of the guide roller 32 with the cooperation of the spring 322, so that the guide roller 32 can be suitable for guiding evaporation tubes with different diameters when rotating and guiding. Example 5

[0040] See also Figures 1 to 13 On the basis of the fourth embodiment, in order to enable the device to unwind evaporator tube reels with different inner diameters, the present embodiment further proposes that a large gear ring 223 is fixedly installed on the outer surface of the rotating unwinding disk 22, a large gear 231 meshing with the large gear ring 223 is provided on one side of the large gear ring 223, a driving motor 23 for driving the large gear 231 to rotate is fixedly installed at the rear of the side wall of the unwinding device base 1, an adjusting motor 24 is fixedly installed at the rear of the side wall of the rotating unwinding disk 22, an adjusting gear 25 is rotatably installed inside the rotating unwinding disk 22, and the output shaft of the adjusting motor 24 is fixedly installed at the rear of the side wall of the rotating unwinding disk 22. The rear end of the rotating shaft of the adjusting gear 25 is fixedly connected, a mounting column 221 is fixedly installed in the middle of the front end surface of the rotating unwinding disk 22, a baffle 222 is arranged on the outside of the mounting column 221, a sliding rack 26 is symmetrically arranged on the outside of the adjusting gear 25, the sliding rack 26 is slidably installed on the inner surface of the rotating unwinding disk 22, the inner surface of the rotating unwinding disk 22 is provided with a limiting sliding groove adapted to the sliding rack 26, an unwinding disk tensioning column 27 is rotatably installed on one end of the sliding rack 26, and a sliding hole adapted to the unwinding disk tensioning column 27 is opened on the surface of the rotating unwinding disk 22;

[0041] In this embodiment, the fixing seat 21 mainly serves to install the rotating unwinding disk 22. The evaporator tube reel is installed at the front end of the rotating unwinding disk 22. The adjusting motor 24 can drive the adjusting gear 25 to rotate, so that the sliding rack 26 slides with the cooperation of the limiting groove of the rotating unwinding disk 22, so that the unwinding disk tensioning column 27 can tension the inside of the evaporator tube reel, which is suitable for unwinding evaporator tube reels with different inner diameters. Then, the baffle 222 is installed on the mounting column 221 to limit the outside of the evaporator tube reel, and it is fixed with a nut to complete the installation of the evaporator tube reel. The driving motor 23 drives the large gear 231 to rotate, and the rotating unwinding disk 22 is driven to rotate through the large gear ring 223 to complete the unwinding. Example 6

[0042] See also Figures 1 to 13 On the basis of the fifth embodiment, in order to increase the friction to prevent sliding after the unwinding disk tensioning column 27 tensions the inside of the evaporator tube reel, the present embodiment further proposes that triangular anti-skid pads 271 are evenly distributed on the surface of the unwinding disk tensioning column 27, and the triangular anti-skid pads 271 are rotatably mounted on the outer surface of the unwinding disk tensioning column 27, and supporting pads 272 are provided on the side surfaces of the triangular anti-skid pads 271 and the outer surfaces of the unwinding disk tensioning column 27; in the present embodiment, the triangular anti-skid pads 271 on the outer side of the unwinding disk tensioning column 27 are movable, and can squeeze the inside of the evaporator tube reel, and deform and engage with the inside of the evaporator tube reel, so that after the unwinding disk tensioning column 27 tensions the inside of the evaporator tube reel, the friction can be increased to prevent sliding. Example 7

[0043] See also Figures 1 to 13 On the basis of the sixth embodiment, in order to realize the straightening of the evaporation tube after unwinding, the present embodiment further proposes that the straightening assembly 4 includes a mounting frame 41 fixedly mounted above the unwinding device base 1, a fixed base 42 is fixedly mounted at the bottom of the mounting frame 41, an adjusting frame 43 is arranged above the inside of the mounting frame 41, a telescopic rod 44 is fixedly mounted on the upper surface of the mounting frame 41, the output end of the telescopic rod 44 is fixedly connected to the upper surface of the adjusting frame 43, and straightening roller assemblies 45 are arranged on the inner sides of the adjusting frame 43 and the fixed base 42; in the present embodiment, the straightening roller assembly 45 is mainly composed of a plurality of rotating rollers with wide ends and narrow middle, and the rear is linked by gears and chains, one of which is provided with a driving motor, and the adjusting frame 43 and the fixed base 42 are each equipped with a group of straightening roller assemblies 45 to realize the straightening of the curled evaporation tube, and the adjusting frame 43 is driven to rise and fall by the telescopic rod 44, and the spacing between the straightening roller assemblies 45 can be adjusted according to the diameter of the evaporation tube. Example 8

[0044] See also Figures 1 to 13Based on the seventh embodiment, this embodiment further proposes a method for using a refrigerator evaporator tube unwinding device, comprising the following steps:

[0045] Step 1: Install the evaporator tube reel at the front end of the rotating unwinding reel 22, start the adjusting motor 1 24 to drive the adjusting gear 25 to rotate, so that the sliding rack 26 slides in cooperation with the limiting groove of the rotating unwinding reel 22, so that the unwinding reel tensioning column 27 can tension the inside of the evaporator tube reel, and then install the baffle 222 on the mounting column 221 to limit the outside of the evaporator tube reel, and fix it with a nut to complete the installation of the evaporator tube reel;

[0046] Step 2: Start the driving motor 1 23 to drive the large gear 231 to rotate, and drive the rotating unwinding disk 22 to rotate through the large gear ring 223 to unwind, and synchronously start the driving motor 2 33 and the tensioning column 35, open the cover 31 to adjust the evaporating tube, so that it passes through the tensioning column 35 and the compensation support plate 363 and is guided by the guide roller 32 to the straightening roller assembly 45 for straightening output, and drive the adjustment frame 43 to rise and fall through the telescopic rod 44, so that the spacing between the straightening roller assemblies 45 can be adjusted according to the diameter of the evaporating tube to ensure the best straightening effect;

[0047] The third step is to rotate the adjusting motor 342 to adjust the inner side of the evaporator tube 342 so that the tensioning column 35 can continuously squeeze the outer side of the evaporator tube 342 as the diameter of the evaporator tube 342 decreases, and the compensation support plate 363 can move with the movement of the tensioning column 35 with the cooperation of the sliding block 361, the inclined support rod 362 and the limit spring 364, so as to keep supporting the inner side of the evaporator tube to cope with the tension change caused by the change of the diameter of the evaporator tube 342, so that the evaporator tube 342 is always in a straight state after being unwound and straightened.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A refrigerator evaporation tube unwinding device, comprising an unwinding device base (1), characterized in that: An evaporator tube unwinding disc assembly (2) is arranged on one side of the unwinding device base (1), a tension compensation support assembly (3) is arranged in the middle of the unwinding device base (1), and a straightening assembly (4) is arranged on the other side of the unwinding device base (1), the evaporator tube unwinding disc assembly (2) comprises a fixed seat (21) fixedly mounted on the surface of one side of the unwinding device base (1), a rotatable unwinding disc (22) is rotatably mounted inside the fixed seat (21), the tension compensation support assembly (3) comprises a tension adjustment plate (34), a tension column (35) and an inner compensation support plate (36), the other end of the tension adjustment plate (34) is fixedly mounted with a tension column (35); the straightening assembly (4 ... the unwinding device base (1), and a tension compensation support assembly (3) is arranged on the inner side of the unwinding device base (1). A mounting frame (41) is arranged above the winding device base (1), a fixed base (42) is fixedly installed at the bottom of the mounting frame (41), an adjusting frame (43) is arranged above the interior of the mounting frame (41), a telescopic rod (44) is fixedly installed on the upper surface of the mounting frame (41), and the output end of the telescopic rod (44) is fixedly connected to the upper surface of the adjusting frame (43); a straightening roller assembly (45) is arranged on the inner side of the adjusting frame (43) and the fixed base (42); a sliding block (361) is slidably installed above the inner compensation support plate (36), an oblique support rod (362) is hingedly installed on the side surface of the sliding block (361), and a compensation support rod (362) is movably installed above the oblique support rod (362). The compensation support plate (363) is arranged below the tensioning column (35), a limit spring (364) is arranged on one side of the sliding block (361), and the limit spring (364) is sleeved on the outside of the sliding rod of the inner compensation support plate (36), and a correction guide rod (3631) is obliquely distributed on the side surface of the compensation support plate (363), and an extrusion spherical pad (3632) is fixedly installed between the side surface of the correction guide rod (3631) and the side surface of the compensation support plate (363), and the oblique support rod (362) obliquely supports the compensation support plate (363) to support the inner side of the evaporator tube after unwinding. As the evaporator tube continues to unwind, the coil diameter becomes smaller and smaller, and the compensation support plate (363) starts to move on the inner side. To achieve the effect of tension compensation, the correction guide rod (3631) has a tendency to tilt toward one side of the unwinding device base (1) under the cooperation of the extruded spherical pad (3632), so that the evaporator tube is continuously restricted during the unwinding process. The compensation support plate (363) can move in conjunction with the movement of the tensioning column (35) under the cooperation of the sliding block (361), the inclined support rod (362), and the limit spring (364), and always maintains support for the inner side of the evaporator tube to cope with the tension change caused by the change in the roll diameter, so that the unwound evaporator tube is in a straight state. One end of the tension adjustment plate (34) is rotatably connected to the side wall of the unwinding device base (1), and a small gear ring (341) is fixedly installed on the outer surface of one end of the tension adjustment plate (34).A small gear (343) meshing with the small gear ring (341) is provided on one side of the small gear ring (341); the small gear (343) is rotatably mounted on the side wall of the unwinding device base (1); an adjusting motor 2 (342) for driving the small gear (343) to rotate is fixedly mounted behind the side wall of the unwinding device base (1); arc-shaped extrusion gaskets (351) are evenly distributed on the outer side of the tensioning column (35); a reset gasket (3511) is fixedly mounted between the inner surface of the arc-shaped extrusion gasket (351) and the outer surface of the tensioning column (35); a touch-pressure column (3512) is fixedly mounted in the middle of the inner surface of the arc-shaped extrusion gasket (351); the touch-pressure column (3512) passes through the side wall of the tensioning column (35); A pressure sensor (352) is provided inside the tensioning column (35), and the position of the touch-pressure column (3512) matches the position of the second regulating motor (342). The tensioning column (35) squeezes the outer side of the unwinding evaporating tube, and the arc-shaped squeezing gasket (351) slides inwards under the squeezing force and presses the pressure sensor (352) through the touch-pressure column (3512). The pressure sensor (352) obtains the squeezing value and provides feedback. The reset gasket (3511) pushes out the arc-shaped squeezing gasket (351) when the evaporating tube is not squeezed, thereby avoiding the error of the pressure sensor (352). As the evaporating tube continues to unwind, the winding diameter becomes smaller and smaller, and the second regulating motor (342) starts to work, driving the pinion (343) to rotate, and the pinion (343) is driven to rotate. 43) drives the small gear ring (341) to realize the counterclockwise rotation of the tension adjustment plate (34), so that the tension column (35) continuously squeezes the outer side of the unwinding evaporator tube according to the smaller and smaller coil diameter, ensures that the value fed back by the pressure sensor (352) is consistent, and continuously assists the unwinding of the evaporator tube in tensioning. The tension adjustment plate (34) and the outer side of the tension column (35) are provided with a cover (31), and the cover (31) is hingedly mounted on the side surface of the unwinding device base (1). The tension adjustment plate (34) is symmetrically provided with guide rollers (32) on one side close to the straightening component (4). The two groups of guide rollers (32) are rotatably mounted on the side wall of the unwinding device base (1), and one group of guide rollers (32) penetrates one side of the tension adjustment plate (34). In the middle of the end, gears meshing with each other are arranged between the two groups of guide rollers (32), a driving motor (33) for driving the guide roller (32) to rotate is fixedly installed behind the side wall of the unwinding device base (1), expansion pads (321) are evenly distributed on the outer surface of the guide roller (32), springs (322) are fixedly installed at both ends of the expansion pads (321), one end of the spring (322) is fixedly connected to the outer surface of the guide roller (32), the expansion pad (321) maintains elastic expansion outside the guide roller (32) with the cooperation of the spring (322), so that the guide roller (32) can be suitable for guiding evaporation tubes of different diameters when rotating and guiding, and an adjusting gear (25) is rotatably installed inside the rotating unwinding disk (22).A sliding rack (26) is symmetrically arranged on the outer side of the adjusting gear (25), and the sliding rack (26) is slidably mounted on the inner surface of the rotating unwinding disk (22). The inner surface of the rotating unwinding disk (22) is provided with a limiting sliding groove matched with the sliding rack (26). An unwinding disk tensioning column (27) is rotatably mounted on one end of the sliding rack (26). A sliding hole matched with the unwinding disk tensioning column (27) is opened on the surface of the rotating unwinding disk (22), and triangular grooves are evenly distributed on the surface of the unwinding disk tensioning column (27). The anti-skid pad (271) is rotatably mounted on the outer surface of the unwinding disk tensioning column (27). The side surface of the triangular anti-skid pad (271) and the outer surface of the unwinding disk tensioning column (27) are provided with a supporting pad (272). The triangular anti-skid pad (271) on the outer side of the unwinding disk tensioning column (27) is movable, and presses the inside of the evaporator tube reel and deforms to engage with the inside of the evaporator tube reel, so that after the unwinding disk tensioning column (27) tensions the inside of the evaporator tube reel, friction is increased to prevent sliding.

2. A refrigerator evaporator tube unwinding device according to claim 1, characterized in that: The inner compensation support plate (36) is arranged below the tension adjustment plate (34), and the inner compensation support plate (36) is fixedly mounted on the side wall of the unwinding device base (1).

3. The refrigerator evaporator tube unwinding device according to claim 1, characterized in that: A large gear ring (223) is fixedly mounted on the outer surface of the rotating unwinding disk (22), a large gear (231) meshing with the large gear ring (223) is arranged on one side of the large gear ring (223), a driving motor (23) for driving the large gear (231) to rotate is fixedly mounted behind the side wall of the unwinding device base (1), an adjusting motor (24) is fixedly mounted behind the side wall of the rotating unwinding disk (22), an output shaft of the adjusting motor (24) is fixedly connected to the rear end of the rotating shaft of the adjusting gear (25), a mounting column (221) is fixedly mounted in the middle of the front end surface of the rotating unwinding disk (22), and a baffle (222) is arranged outside the mounting column (221).

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