Reciprocating type reaming device for reaming aluminum pipe of air conditioner

Abstract

The invention relates to the technical field of chambering machines, in particular to a reciprocating type chambering device for chambering an air conditioner aluminum pipe, which comprises a rack, and a positioning mechanism and a chambering mechanism are arranged on the rack; the positioning mechanism comprises a supporting assembly, a buckling assembly and an end limiting assembly, and the supporting assembly is fixed to the rack and supports the air conditioner aluminum pipe to be reamed from the lower portion. The movable end of the buckling assembly can move to the position above the supporting assembly or move to one side from the position above the supporting assembly. The buckling assembly and the supporting assembly are buckled with each other to wrap and limit the air conditioner aluminum pipe, and the end limiting assembly is installed at the moving end of the buckling assembly and abuts against the non-chambering end of the air conditioner aluminum pipe. The reaming mechanism is located at the end, away from the end limiting assembly, of the supporting assembly and used for reaming the air conditioner aluminum pipe. According to the technical scheme, the air conditioner aluminum pipe can be automatically subjected to broaching machining, the broaching qualification rate of the aluminum pipe is increased, and meanwhile the labor cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of hole expanding machines, in particular to a reciprocating hole expanding device for expanding the holes of aluminum tubes for air conditioners. Background Art

[0002] Air conditioner aluminum tubes of specific lengths are used in structures such as the evaporator of an air conditioner's indoor unit and the condenser of an outdoor unit. Prior art air conditioner production involves mass-producing large quantities of these tubes. To improve air conditioning efficiency and reduce pressure drop, these tubes are typically expanded. By increasing the diameter of the tubes at both ends, the refrigerant flow rate in the tubes is increased. A greater flow rate increases heat transfer efficiency, allowing the air conditioning system to exchange heat more quickly. Furthermore, expansion reduces refrigerant flow resistance and pressure drop within the air conditioner, thereby reducing the workload of the compressor, lowering energy consumption, and extending the life of the equipment. Prior art expansion of air conditioner aluminum tubes is typically performed manually, which often results in cracks in the expanded portion, resulting in a low tube expansion yield rate and significant labor costs. Therefore, a reciprocating expansion device for expanding air conditioner aluminum tubes is urgently needed. Summary of the Invention

[0003] (1) Technical problems solved

[0004] In view of the shortcomings of the existing technology, the present invention provides a reciprocating hole expanding device for expanding the holes of air-conditioning aluminum tubes, which can automatically expand the holes of air-conditioning aluminum tubes, improve the qualified rate of aluminum tube hole expansion, and save labor costs.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned purpose, an embodiment of the present application provides a reciprocating reaming device for reaming the holes of air-conditioning aluminum tubes, comprising a frame, on which a positioning mechanism and a reaming mechanism are arranged; the positioning mechanism comprises a supporting assembly, a snap-fit ​​assembly and an end limit assembly, the supporting assembly is fixed on the frame, and supports the air-conditioning aluminum tube to be reamed from below; the movable end of the snap-fit ​​assembly can be moved to above the supporting assembly, or moved to one side from above the supporting assembly; the snap-fit ​​assembly and the supporting assembly are snapped together to wrap and limit the air-conditioning aluminum tube, the end limit assembly is installed at the movable end of the snap-fit ​​assembly, and abuts against the non-reaming end of the air-conditioning aluminum tube; the reaming mechanism is located at one end of the support assembly away from the end limit assembly, and the reaming mechanism reams the hole of the air-conditioning aluminum tube.

[0007] Preferably, the support assembly includes a bottom mounting plate, a support sleeve, a positioning sleeve, a support plate and a support mold; the bottom mounting plate is fixed to the bottom of the frame, the support sleeve is vertically arranged and fixed to the upper side of the bottom mounting plate, and multiple support sleeves are arranged at intervals along the length direction; the positioning sleeve is provided on each of the support sleeves; one end of the positioning sleeve is inserted into the support sleeve, and the other end is fixed to support the support plate from below; a first locking piece for locking the positioning sleeve is provided on the support sleeve; the upper side of the support plate is detachably connected to the support mold; the support mold supports the air-conditioning aluminum tube.

[0008] Preferably, the supporting mold includes a first supporting mold base and a second supporting mold base; a mounting recess is provided on the upper side of the supporting plate, and a mounting step is formed on the inner side wall of the mounting recess, and the mounting step is connected to the supporting mold; a first positioning groove is formed on the upper side of the first supporting mold base, the cross-section of the first positioning groove is semicircular, the diameter of the first positioning groove is the same as the outer diameter of the air-conditioning aluminum tube to be expanded, and both ends pass through the two ends of the first supporting mold base, and the first positioning groove is used to limit and support the non-expanded section of the air-conditioning aluminum tube; a first protective groove is formed on the upper side of the second supporting mold base; the cross-section of the first protective groove is semicircular, and the diameter of the protective groove is the same as the diameter of the air-conditioning aluminum tube to be expanded; a positioning column is integrally formed on one end of the second supporting mold base close to the first supporting mold base; a positioning hole is formed on one end of the first supporting mold base close to the second supporting mold base, and the positioning column is inserted into the positioning hole; a first arc-shaped closing is formed on one end of the second supporting mold base close to the first supporting mold base, one end of the first arc-shaped closing has a larger diameter and is aligned with the first protective groove, and the other end has a smaller diameter and is aligned with the first positioning groove.

[0009] Preferably, two discharge openings are provided on the first supporting die base at intervals; one end of the discharge opening passes through the upper and lower ends of the first supporting die base, and the width of the discharge opening is greater than the width of the first positioning groove; a discharge cavity is formed in the positioning sleeve, and the discharge cavity is connected to the discharge opening; an ejection assembly is provided in the discharge cavity; the ejection assembly includes an electric push rod, a first guide column, and a discharge plate; the electric push rod is fixed in the discharge cavity, the piston end of the electric push rod is connected to the first guide column, and the first guide column is connected to the discharge The material cavity is slidably connected, and the end of the first guide column away from the electric push rod is fixedly connected to the unloading plate; the unloading plate is rectangular in shape, and the unloading plate is embedded in the unloading port. The end of the unloading plate away from the first guide column is provided with a unloading groove, and the unloading groove is arc-shaped, and the air-conditioning aluminum tube can be embedded in the unloading groove. When the air-conditioning aluminum tube is expanded, the height of the unloading groove is not higher than the height of the first positioning groove; after the expansion is completed, the electric push rod can drive the unloading plate to rise upward, and it protrudes from the first positioning groove.

[0010] Preferably, the snap-fit ​​assembly includes a support vertical plate, a guide rail, a mounting seat, a snap-fit ​​mold, a lifting control cylinder and a horizontal control cylinder; the support vertical plate is vertically arranged, and two pieces are fixed at intervals, respectively located on both sides of the support assembly; the guide rails are arranged at intervals, and the two guide rails are horizontally fixed between the support vertical plates, and the spacing between the guide rails is greater than the length of the air-conditioning aluminum tube; the guide rails are slidably connected to the mounting seat, and the horizontal control cylinder is fixed to the support vertical plate and drives the mounting seat to move along the length direction of the guide rail, and the mounting seat can be moved to the top of the support assembly or to one side of the support assembly; the snap-fit ​​mold is located between the mounting seat and the between the supporting molds; a plurality of second guide columns are fixed on the side of the fastening mold close to the mounting seat, and the mounting seat is slidably connected to the fastening mold through the second guide columns; a lifting control cylinder is fixed on the upper side of the mounting seat, and the piston end of the lifting control cylinder passes through the mounting seat and is fixedly connected to the fastening mold; a second positioning groove and a second protective groove are formed on the side of the fastening mold close to the supporting mold, the second positioning groove and the first positioning groove have the same diameter, and the second protective groove and the first protective groove have the same diameter; when the fastening mold is fastened with the supporting mold, the first positioning groove and the second positioning groove are aligned, and the first protective groove and the second protective groove are aligned.

[0011] Preferably, the end limit assembly includes a double-row cylinder, a limit plate, a limit sleeve and a limit column; the double-row cylinder is fixed on the mounting seat, and the piston end of the double-row cylinder is fixedly connected to the limit plate, and the limit plate is located at the end of the mounting seat away from the reaming mechanism, and the limit plate extends below the second positioning groove; the limit sleeve is fixedly mounted on the limit plate, one end of the limit column is inserted into the limit sleeve, and the other end is close to the second positioning groove, and the limit column is concentrically arranged with the second positioning groove, and when the double-row cylinder is shortened, the limit column can be inserted into the second positioning groove; the diameter of the end of the limit column close to the second positioning groove is the same as the diameter of the air-conditioning aluminum tube to be reamed; a second locking piece for locking the limit column is provided on the outside of the limit sleeve.

[0012] Preferably, the device also includes a loading mechanism, a material moving mechanism and a material unloading box; the loading mechanism and the material unloading box are located on both sides of the positioning mechanism and at both ends of the frame; the material moving mechanism is located at the top of the frame, and can clamp the air-conditioning aluminum tube to be expanded when moving horizontally, and control the movement of the air-conditioning aluminum tube.

[0013] Preferably, the feeding mechanism includes a feeding box, a feeding assembly and an elastic scraper; an opening is formed at the upper end of the feeding box, and a support column is fixed on the side of the feeding box close to the opening, the support column is horizontally arranged, and an operating sleeve is sleeved on the support column; an isolation plate is provided in the feeding box, the isolation plate and the operating sleeve are fixedly connected, and one side of the isolation plate forms a material cavity; the feeding assembly includes a feeding cylinder, a feeding frame and a V-shaped plate; the feeding cylinder is fixed to the bottom of the feeding box, and the piston end of the feeding cylinder is fixedly connected to the lower side of the feeding frame; the feeding frame includes a bottom fixing plate fixed to the feeding cylinder, a vertically arranged third guide column and a third guide column fixed to the bottom The top fixed plate at the top of the third guide column; the third guide column passes through the loading box, with one end located inside the loading box and the other end located outside the loading box; the V-shaped plate is fixed on the top fixed plate, and a V-shaped groove is formed on the upper side of the V-shaped plate, the maximum width of the V-shaped groove is smaller than the diameter of the air-conditioning aluminum tube, and the length direction of the V-shaped groove is parallel to the length direction of the first positioning groove; one end of the elastic scraper is fixed to the inner wall of the loading box, and the other end is arc-shaped and located directly above the V-shaped plate; when the V-shaped plate moves upward to the maximum position, the vertical distance between the V-shaped plate and the elastic scraper is between one and two times the diameter of the air-conditioning aluminum tube.

[0014] Preferably, the material moving mechanism includes a fourth guide post, a material moving plate, a first station clamping assembly and a second station clamping assembly; the fourth guide posts are arranged at intervals, and the two fourth guide posts are fixed to the frame at intervals; the two fourth guide posts are parallel to each other, one end of the fourth guide post is close to the loading box, and the other end is close to the unloading box, and the fourth guide post covers the positioning mechanism; the material moving plate is slidably connected to the fourth guide post, and the horizontal driving cylinder is fixed to the frame and drives the material moving plate to move horizontally; the first station clamping assembly and The second station clamping assembly; the distance between the first station clamping assembly and the second station clamping assembly, the distance between the first positioning groove and the V-shaped groove, and the distance between the first positioning groove and the blanking box are the same; the first station clamping assembly and the second station clamping assembly both include a vertical drive cylinder, a connecting plate and a pneumatic clamp; the vertical drive cylinder is fixed on the material transfer plate, and the piston end of the vertical drive cylinder is fixedly connected to the connecting plate, and the connecting plate is horizontally arranged, and the pneumatic clamp is fixed on the side of the connecting plate away from the vertical drive cylinder, and two pneumatic clamps are arranged at intervals along the length direction of the V-shaped groove.

[0015] Preferably, the reaming mechanism includes a mounting block, a lifting block, a telescopic member and a reamer; the mounting block is fixed on the frame, and a rectangular adjustment hole is opened at the upper end of the mounting block; one end of the lifting block is inserted into the adjustment hole, and the other end is located above the mounting block, and a third locking member is provided on the mounting block, and the third locking member locks the lifting block when it slides in the vertical direction; the telescopic member is fixed to the upper end of the lifting block, and the telescopic end of the telescopic member is connected to the reamer; the reamer is arranged coaxially with the first positioning groove.

[0016] (3) Beneficial effects

[0017] The present invention provides a reciprocating reaming device for reaming the holes of aluminum tubes for air conditioners. By means of a supporting assembly, a snap-fit ​​assembly, an end limit assembly, a feeding mechanism and a reaming mechanism, the feeding, reaming and unloading of the aluminum tubes for air conditioners can be automatically controlled, thereby realizing automated reaming processing of the aluminum tubes for air conditioners. During reaming processing, on the outer side of the aluminum tube for air conditioners, a first positioning groove and a second positioning groove are used to support and fix the non-reaming section, and the reaming section is covered by the first protective groove and the second protective groove. After reaming, the reaming section abuts against the first protective groove on the outer side, and the reaming section and the non-reaming section remain coaxial and will not be damaged, thereby improving the success rate of reaming and saving labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of a reciprocating hole-expanding device for expanding the hole of an aluminum tube for an air conditioner according to the present invention;

[0019] Figure 2 This is a cross-sectional view highlighting the position structure of the positioning mechanism and the expansion mechanism of the present invention;

[0020] Figure 3 is a schematic diagram of a protruding support assembly of the present invention;

[0021] Figure 4 The present invention highlights Figure 3 A partial enlarged view of the structure A in the middle;

[0022] Figure 5 A cross-sectional view of the ejection assembly of the present invention;

[0023] Figure 6 A cross-sectional view showing a discharge port of the present invention;

[0024] Figure 7 A cross-sectional view highlighting the support mold of the present invention;

[0025] Figure 8 is a schematic diagram of a protruding end limiting assembly of the present invention;

[0026] Figure 9 It is a schematic diagram of the drawing feeding mechanism of the present invention;

[0027] Figure 10 A schematic diagram of a prominent isolation panel of the present invention;

[0028] Figure 11 A schematic diagram highlighting the material transfer mechanism of the present invention;

[0029] Figure 12 Schematic diagram of the bulging mechanism of the present invention.

[0030] In the accompanying drawings:

[0031] 100, frame; 200, support assembly; 210, bottom mounting plate; 220, support sleeve; 230, positioning sleeve; 231, discharge chamber; 240, support plate; 241, mounting countersunk; 242, mounting step; 250, support mold; 251, first supporting mold base; 2511, first positioning groove; 2512, positioning hole; 2513, discharge port; 252, second supporting mold base; 2521, first protective groove; 2522, positioning column; 2523, first arc-shaped closing; 260, first locking member; 270, ejector assembly; 271, electric push rod; 272, first guide column; 273, unloading plate; 2731, unloading chute; 300, snap-fit ​​assembly; 310, support plate; 320, guide rail; 330, mounting seat; 331, guide block; 340, snap-fit ​​mold; 341, second positioning groove; 342, second protective groove; 343, second arc-shaped closing; 350, lifting control cylinder; 360, horizontal control cylinder; 370, second guide column; 371, threaded rod section; 372, locking nut; 400, end stop assembly; 410, double exhaust cylinder; 42 0, limit plate; 430, limit sleeve; 440, limit column; 450, second locking member; 500, feeding mechanism; 510, feeding box; 511, support column; 512, operating sleeve; 513, isolation plate; 514, material chamber; 520, ejector assembly; 521, ejector cylinder; 522, ejector frame; 5221, bottom fixing plate; 5222, third guide column; 5223, top fixing plate; 523, V-shaped plate; 5231, V-shaped slot; 530, elastic scraper; 600, material moving mechanism; 610, fourth guide column; 6 20. Material transfer plate; 630. First station clamping assembly; 640. Second station clamping assembly; 641. Vertical drive cylinder; 642. Connecting plate; 643. Pneumatic clamp; 6431. First pneumatic clamp; 6432. Second pneumatic clamp; 650. Horizontal drive cylinder; 700. Material discharge box; 800. Hole reaming mechanism; 810. Mounting block; 811. Adjustment hole; 820. Lifting block; 830. Telescopic member; 840. Hole reamer; 841. Mounting section; 842. Cylindrical section; 843. Arc-shaped closing section; 850. Third locking member. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] First embodiment

[0034] The present invention provides a reciprocating hole enlarging device for enlarging the hole of an air conditioner aluminum tube. Figure 1 , including a frame 100, on which a positioning mechanism, a hole expanding mechanism 800, a loading mechanism 500, a material moving mechanism 600 and a material unloading box 700 are arranged.

[0035] The positioning mechanism and reaming mechanism 800 are located in the middle of the frame 100. The loading mechanism 500 and unloading box 700 are located at both ends of the frame 100 and on both sides of the positioning mechanism. The material transfer mechanism 600 is located at the top of the frame 100 and can clamp the air conditioning aluminum tube to be expanded when moving horizontally and control the movement of the air conditioning aluminum tube. Automatic loading and unloading are achieved through the material transfer mechanism 600. The positioning mechanism is used to position the air conditioning aluminum tube to be expanded, and the reaming mechanism 800 is used to expand the air conditioning aluminum tube to be expanded.

[0036] The positioning mechanism includes a support assembly 200, a snap-fit ​​assembly 300, and an end stop assembly 400. The support assembly 200 is fixed to the frame 100 and supports the air-conditioning aluminum tube to be expanded from below. The movable end of the snap-fit ​​assembly 300 can move above the support assembly 200 or move to the side from above the support assembly 200. The snap-fit ​​assembly 300 and the support assembly 200 interlock with each other to wrap and limit the air-conditioning aluminum tube. The end stop assembly 400 is installed at the movable end of the snap-fit ​​assembly 300 and abuts and limits the non-expanded end of the air-conditioning aluminum tube. The expansion mechanism 800 is located at the end of the support assembly 200 away from the end stop assembly 400 and expands the air-conditioning aluminum tube. Through the mutual cooperation of the support assembly 200, the snap-fit ​​assembly 300, and the end stop assembly 400, the air-conditioning aluminum tube can be positioned and protected during expansion.

[0037] The support assembly 200 includes a bottom mounting plate 210 , a support sleeve 220 , a positioning sleeve 230 , a support plate 240 , and a support mold 250 .

[0038] The bottom mounting plate 210 is fixed to the bottom of the frame 100 , the support sleeve 220 is vertically arranged and fixed to the upper side of the bottom mounting plate 210 , and multiple support sleeves 220 are arranged at intervals along the length direction; a positioning sleeve 230 is provided on each support sleeve 220 .

[0039] One end of the positioning sleeve 230 is inserted into the support sleeve 220, and the other end securely supports the support plate 240 from below. The support sleeve 220 is provided with a first locking member 260 for locking the positioning sleeve 230. The first locking member 260 can be a plurality of first screws, which are threadedly connected to the support sleeve 220 and pass through the support sleeve 220 to press against the positioning sleeve 230 inside. This abutment secures the positioning sleeve 230, allowing the height of the positioning sleeve 230 to be adjusted arbitrarily during operation.

[0040] The upper side of the support plate 240 is detachably connected to a support mold 250 ; the support mold 250 supports the aluminum tube of the air conditioner.

[0041] The supporting mold 250 includes a first supporting mold base 251 and a second supporting mold base 252 .

[0042] A mounting recess 241 is provided on the upper side of the support plate 240 , and an inner wall of the mounting recess 241 forms a mounting step 242 , which is connected to the support mold 250 ; specifically, the support mold 250 is fixed to the mounting step 242 by bolts.

[0043] A first positioning groove 2511 is formed on the upper side of the first supporting mold base 251. The cross-section of the first positioning groove 2511 is semicircular. The diameter of the first positioning groove 2511 is the same as the outer diameter of the air-conditioning aluminum tube to be expanded, and both ends pass through the two ends of the first supporting mold base 251. The first positioning groove 2511 is used to limit and support the non-expanded section of the air-conditioning aluminum tube.

[0044] A first protective groove 2521 is formed on the upper side of the second support mold base 252. The cross-section of the first protective groove 2521 is semicircular, and its diameter is the same as the diameter of the air conditioner aluminum tube to be expanded, that is, the same as the diameter of the expanded tube after expansion. This first protective groove 2521 protects the expanded section during the expansion process. After expansion, the expanded section abuts against the outer first protective groove 2521, maintaining the expanded and non-expanded sections coaxially and preventing damage.

[0045] A positioning column 2522 is integrally formed at one end of the second supporting mold base 252 close to the first supporting mold base 251; a positioning hole 2512 is formed at one end of the first supporting mold base 251 close to the second supporting mold base 252, and the positioning column 2522 is inserted into the positioning hole 2512; by inserting the positioning column 2522 and the positioning hole 2512, after the first supporting mold base 251 and the second supporting mold base 252 are installed, the first positioning groove 2511 and the first protective groove 2521 can remain coaxial, which facilitates installation.

[0046] The second support die seat 252 is formed with a first arc-shaped recess 2523 near one end of the first support die seat 251, one end of the first arc-shaped recess 2523 is larger in diameter and is aligned with the first protection groove 2521, and the other end is smaller in diameter and is aligned with the first positioning groove 2511. During the reaming, the first arc-shaped recess 2523 is arranged to support the connection position of the reamed section and the non-reamed section of the air conditioner aluminum pipe, so that the pipe section at the position of the first arc-shaped recess 2523 is smoother and more balanced during the reaming process, and the damage or thin wall phenomenon at this position is avoided.

[0047] The first support die seat 251 is provided with two discharge ports 2513 spaced apart thereon; one end of the discharge port 2513 penetrates through the upper and lower ends of the first support die seat 251, and the width of the discharge port 2513 is greater than the width of the first positioning groove 2511. The width direction of the first positioning groove 2511 is defined as the width direction of the discharge port 2513.

[0048] The discharge cavity 231 is formed in the positioning sleeve 230, and the discharge cavity 231 is communicated with the discharge port 2513; the ejection assembly 270 is arranged in the discharge cavity 231. After reaming, the air conditioner aluminum pipe after reaming is lifted by a set distance through the ejection assembly 270.

[0049] The ejection assembly 270 includes an electric push rod 271, a first guide column 272, and a discharge plate 273.

[0050] The electric push rod 271 is fixed in the discharge cavity 231, the piston end of the electric push rod 271 is connected with the first guide column 272, the first guide column 272 is slidably connected with the discharge cavity 231, and one end of the first guide column 272 away from the electric push rod 271 is fixedly connected with the discharge plate 273.

[0051] The discharge plate 273 is rectangular in shape, is embedded in the discharge port 2513, and is provided with a discharge groove 2731 at one end of the discharge plate 273 away from the first guide column 272, the discharge groove 2731 is arc-shaped, and the air conditioner aluminum pipe can be embedded in the discharge groove 2731, and the height of the discharge groove 2731 is not higher than the height of the first positioning groove 2511 during the reaming of the air conditioner aluminum pipe; after the reaming is completed, the electric push rod 271 can drive the discharge plate 273 to rise upward, and the discharge plate 273 protrudes from the first positioning groove 2511. When discharging, the discharge plate 273 is controlled to rise upward by the electric push rod 271, and after rising, the air conditioner aluminum pipe is separated from the first positioning groove 2511, and the air conditioner aluminum pipe is lifted above the first positioning groove 2511, so that the discharging is facilitated.

[0052] The buckling assembly 300 includes a support vertical plate 310, a guide rail 320, a mounting seat 330, a buckling die 340, a lifting control pneumatic cylinder 350, and a horizontal control pneumatic cylinder 360.

[0053] The support uprights 310 are vertically arranged, with two spaced apart and fixed, one on each side of the support assembly 200. Two guide rails 320 are spaced apart and fixed horizontally between the support uprights 310. The spacing between the guide rails 320 is greater than the length of the air conditioning aluminum tubes. During automatic loading or unloading, the air conditioning aluminum tubes can be loaded or unloaded between the two guide rails 320, along a direction perpendicular to the guide rails 320. A mounting base 330 is slidably connected to the guide rails 320. Specifically, a guide block 331 can be provided on the upper side of the mounting base 330, which is slidably connected to the guide rails 320.

[0054] A horizontal control cylinder 360 is fixed to the support plate 310 and drives the mounting base 330 to move along the length of the guide rail 320. The mounting base 330 can be moved directly above the support assembly 200 or to the side of the support assembly 200. During reaming, the mounting base 330 moves directly above the support assembly 200. When reaming is complete, the mounting base 330 moves outward to the side to facilitate unloading and loading.

[0055] The snap-fit ​​mold 340 is located between the mounting base 330 and the support mold 250. Multiple second guide posts 370 are fixed to the side of the snap-fit ​​mold 340 near the mounting base 330. The second guide posts 370 slidably connect the snap-fit ​​mold 340 to the mounting base 330, allowing the snap-fit ​​mold 340 to slide vertically. To prevent the snap-fit ​​mold 340 from accidentally falling or to facilitate maintenance, a threaded rod section 371 is formed at the upper end of the second guide post 370. A locking nut 372 is connected to the threaded rod section 371. Both the threaded rod section 371 and the locking nut 372 are located above the mounting base 330.

[0056] A lifting control cylinder 350 is fixed on the upper side of the mounting seat 330 . The piston end of the lifting control cylinder 350 passes through the mounting seat 330 and is fixedly connected to the fastening mold 340 .

[0057] A second positioning groove 341 and a second protective groove 342 are formed on the side of the fastening mold 340 near the supporting mold 250. The second positioning groove 341 and the first positioning groove 2511 have the same diameter, and the second protective groove 342 and the first protective groove 2521 have the same diameter. When the fastening mold 340 is fastened to the supporting mold 250, the first positioning groove 2511 and the second positioning groove 341 are aligned, and the first protective groove 2521 and the second protective groove 342 are aligned. A second curved closure 343 is formed between the second positioning groove 341 and the second protective groove 342. The second curved closure 343 and the first curved closure 2523 have the same dimensions. After fastening, the first and second curved closures 2523 and 343 support and limit the connection between the reaming section and the non-reaming section. During the reaming process, the pipe section at the first curved closure 2523 position becomes smoother and more balanced, preventing damage or thin walls at this location.

[0058] The end limiting assembly 400 includes a dual-exhaust cylinder 410 , a limiting plate 420 , a limiting sleeve 430 and a limiting column 440 .

[0059] The dual-exhaust cylinder 410 is fixed on the mounting base 330 , and the piston end of the dual-exhaust cylinder 410 is fixedly connected to the limit plate 420 . The limit plate 420 is located at one end of the mounting base 330 away from the reaming mechanism 800 , and the limit plate 420 extends to below the second positioning groove 341 .

[0060] The limiting sleeve 430 is fixedly mounted on the limiting plate 420. In this embodiment, the limiting sleeve 430 is located on the side of the limiting plate 420 away from the mounting base 330. One end of the limiting post 440 passes through the limiting plate 420 and is inserted into the limiting sleeve 430. The other end of the limiting post 440 is located near the second positioning slot 341. The limiting post 440 is concentric with the second positioning slot 341. The diameter of the end of the limiting post 440 near the second positioning slot 341 is the same as the diameter of the air conditioning aluminum tube to be expanded. When the dual-row cylinder 410 is shortened, the limiting post 440 can be inserted into the second positioning slot 341. After loading, the limiting post 440 pushes the air conditioning aluminum tube to be expanded a set distance, so that the limiting post 440 abuts one end of the air conditioning aluminum tube, thereby maintaining a constant expansion distance for each expansion. Furthermore, by adjusting the position of the limiting post 440 within the limiting sleeve 430, the expansion length of the air conditioning aluminum tube can be adjusted.

[0061] A second locking member 450 is provided on the outside of the limiting sleeve 430 to lock the limiting post 440. Specifically, the second locking member 450 can be a plurality of second screws, which are threadedly connected to the limiting sleeve 430 and abut against the limiting post 440 after passing through the limiting sleeve 430. It should be noted that the diameters of the limiting post 440 can be different at both ends. The diameter of the end that mates with the limiting sleeve 430 is fixed, while the diameter of the other end can be replaced with a different limiting post 440 based on the diameter of the air conditioning aluminum tube to be expanded.

[0062] The feeding mechanism 500 includes a feeding box 510 , a lifting assembly 520 and an elastic scraper 530 .

[0063] An opening is formed at the upper end of the loading box 510 , and a support column 511 is fixed on one side of the loading box 510 close to the opening. The support column 511 is horizontally arranged, and an operating sleeve 512 is sleeved on the support column 511 .

[0064] The isolation plate 513 is fixedly connected with the operation sleeve 512, and one side of the isolation plate 513 forms a material cavity 514.

[0065] The material lifting assembly 520 comprises a material lifting cylinder 521, a material lifting frame 522 and a V-shaped plate 523.

[0066] The material lifting cylinder 521 is fixed below the material feeding box 510, and the piston end of the material lifting cylinder 521 is fixedly connected with the lower side of the material lifting frame 522. The material lifting frame 522 comprises a bottom fixed plate 5221 fixed with the material lifting cylinder 521, a third guide column 5222 arranged vertically and a top fixed plate 5223 fixed at the top end of the third guide column. The third guide column 5222 passes through the material feeding box 510, and one end is located inside the material feeding box 510 and the other end is located outside the material feeding box 510.

[0067] The V-shaped plate 523 is fixed on the top fixed plate 5223, and a V-shaped clamping groove 5231 is formed on the upper side of the V-shaped plate 523. The maximum width of the V-shaped clamping groove 5231 is smaller than the diameter of the air conditioner aluminum pipe, so that the material moving mechanism 600 can conveniently grab the air conditioner aluminum pipe after lifting the air conditioner aluminum pipe upward. The length direction of the V-shaped clamping groove 5231 is parallel to the length direction of the first positioning groove 2511, and the height of the V-shaped clamping groove 5231 is higher than the height of the first positioning groove 2511 after the V-shaped plate 523 is lifted. The material moving mechanism 600 only needs to parallelly carry the air conditioner aluminum pipe to complete the feeding work.

[0068] One end of the elastic scraper 530 is fixed to the inner wall of the material feeding box 510, and the other end is arc-shaped and located directly above the V-shaped plate 523. When the V-shaped plate 523 is moved upward to the maximum position, the vertical distance between the V-shaped plate 523 and the elastic scraper 530 is between one time and two times the diameter of the air conditioner aluminum pipe. The elastic scraper 530 can unload the excess air conditioner aluminum pipes stacked on the V-shaped plate 523, so as to avoid the air conditioner aluminum pipes from falling out of the material feeding box 510 during the material lifting process. When the air conditioner aluminum pipe is grabbed, the elastic scraper 530 can be bent upward to avoid interference. It should be noted that the position of the air conditioner aluminum pipe grabbed and the position of the air conditioner aluminum pipe abutted by the elastic scraper 530 are different positions, and they do not interfere with each other.

[0069] The material transfer mechanism 600 includes a fourth guide post 610, a material transfer plate 620, a first station clamping assembly 630, and a second station clamping assembly 640. The first station clamping assembly 630 is located near the loading box 510 and is used for loading materials, while the second station clamping assembly 640 is located near the unloading box 700 and is used for unloading materials.

[0070] Two fourth guide columns 610 are arranged at intervals, and the two fourth guide columns 610 are fixed on the frame 100 at horizontal intervals; the two fourth guide columns 610 are parallel to each other, one end of the fourth guide column 610 is close to the loading box 510, and the other end is close to the unloading box 700, and the fourth guide column 610 covers the positioning mechanism.

[0071] The material moving plate 620 is slidably connected to the fourth guide column 610 , and the horizontal driving cylinder 650 is fixed on the frame 100 and drives the material moving plate 620 to move horizontally.

[0072] A first station gripping assembly 630 and a second station gripping assembly 640 are spaced apart and installed below the material transfer plate 620. The distance between the first station gripping assembly 630 and the second station gripping assembly 640, the distance between the first positioning groove 2511 and the V-shaped groove 5231, and the distance between the first positioning groove 2511 and the material unloading box 700 are the same. This allows unloading to proceed simultaneously with loading, improving both loading and unloading efficiency.

[0073] The first station clamping assembly 630 and the second station clamping assembly 640 have the same structure, both including a vertical drive cylinder 641 , a connecting plate 642 and a pneumatic clamp 643 .

[0074] A vertical drive cylinder 641 is fixed to the material transfer plate 620. The piston end of the vertical drive cylinder 641 is fixedly connected to a connecting plate 642, which is arranged horizontally. A pneumatic gripper 643 is fixed to the side of the connecting plate 642 that is away from the vertical drive cylinder 641. Two pneumatic grippers 643 are spaced apart along the length of the V-shaped slot 5231. When the vertical drive cylinder 641 is retracted, the pneumatic gripper 643 is higher than the positioning mechanism. When the vertical drive cylinder 641 moves downward, the pneumatic gripper 643 can grip or release material.

[0075] Specifically, the pneumatic gripper 643 includes a first pneumatic gripper 6431 of the first station gripping assembly 630 and a second pneumatic gripper 6432 of the second station gripping assembly 640. The first pneumatic gripper 6431 is at a lower height when gripping or releasing, while the second pneumatic gripper 6432 is at a higher height when gripping or releasing.

[0076] During adjustment, the height of the V-shaped slot 5231 is slightly higher than the first positioning slot 2511. During loading, the first pneumatic clamp 6431 grasps the material from within the V-shaped slot 5231. During release, the first pneumatic clamp 6431 is positioned above and close to the first positioning slot 2511, ensuring that the air conditioning aluminum tube enters the first positioning slot 2511 after release. To ensure that the air conditioning aluminum tube enters the first positioning slot 2511 smoothly, the two jaws of the first pneumatic clamp 6431 can be adjusted so that their width when open is slightly larger than the diameter of the first positioning slot 2511, allowing the air conditioning aluminum tube to enter the first positioning slot 2511 upon release.

[0077] When unloading, the second pneumatic gripper 6432 grabs the air conditioning aluminum tube from the upper side of the unloading plate 273, and then the second pneumatic gripper 6432 is lowered to a point where it can grab the air conditioning aluminum tube. This process can be completed by adjusting the height of each component.

[0078] The reaming mechanism 800 includes a mounting block 810 , a lifting block 820 , a telescopic member 830 and a reamer 840 .

[0079] The mounting block 810 is fixed on the frame 100, and a rectangular adjustment hole 811 is opened at the upper end of the mounting block 810; one end of the lifting block 820 is inserted into the adjustment hole 811, and the other end is located above the mounting block 810. A telescopic member 830 is fixed to the upper end of the lifting block 820, and the telescopic end of the telescopic member 830 is connected to the reamer 840; a third locking member 850 is provided on the mounting block 810, and the third locking member 850 locks the lifting block 820 to slide in the vertical direction. The third locking member 850 can be a third screw, which is threadedly connected to the mounting block 810 and connected to the adjusting hole 811. When the third screw is locked, it can press against the lifting block 820 to fix its position. The reamer 840 is coaxially arranged with the first positioning groove 2511. Specifically, the reamer 840 includes a mounting section 841, a cylindrical section 842 and an arc-shaped closing section 843, wherein the mounting section 841 is fixedly connected to the telescopic member 830, and the cylindrical section 842 and the arc-shaped closing section 843 enter the air-conditioning aluminum tube for reaming.

[0080] The present invention provides a reciprocating hole enlarging device for air-conditioning aluminum tubes, and the working process is as follows:

[0081] Before work, the staff places the batches of air-conditioning aluminum tubes to be expanded into the material cavity 514. The fastening mold 340 is located on the horizontal side of the supporting mold 250.

[0082] Loading: The lifting assembly 520 lifts the air-conditioning aluminum tube to be expanded. During the lifting process, due to the action of the elastic scraper 530, an air-conditioning aluminum tube will be placed on the V-shaped plate 523. The material transfer mechanism 600 starts to work, controlling the material transfer plate 620 to move toward one end of the upper material box 510. The vertical drive cylinder 641 extends, and the first-station clamping assembly 630 controls the air-conditioning aluminum tube. After clamping, the vertical drive cylinder 641 shortens, and the material transfer plate 620 controls the movement toward one end of the lower material box 700. After that, the vertical drive cylinder 641 extends, and the first-station clamping assembly 630 places the air-conditioning aluminum tube on the support mold 250. The vertical drive cylinder 641 shortens, completing the loading process.

[0083] Hole expansion: The horizontal control cylinder 360 in the fastening assembly 300 controls the fastening die 340 to move directly above the support die 250. The lifting control cylinder 350 controls the support die 250 and the fastening die 340 to contact and engage with each other. During the fastening process, the limiting post 440 slides into the first positioning slot 2511 and the second positioning slot 341, adjusting the position of the air conditioner aluminum tube to the hole expansion position and simultaneously abutting it with its end. The hole expansion mechanism 800 then expands the hole from the other end.

[0084] Unloading: The lift control cylinder 350 in the fastening assembly 300 controls the upward movement of the support mold 250, while the horizontal control cylinder 360 controls the horizontal movement of the fastening mold 340 to the side of the support mold 250. The ejector assembly 270 ejects the reamed aluminum air conditioning tube directly above the first positioning groove 2511. At this point, the loading process begins. While the first-station gripper assembly 630 is positioned directly above the ejector assembly 520 and grips the reamed aluminum air conditioning tube, the second-station gripper assembly 640 moves directly above the first positioning groove 2511 and grips the reamed aluminum air conditioning tube. As the transfer plate 620 moves toward the lower feed bin 700, the second-station gripper assembly 640 places the reamed aluminum air conditioning tube into the unloading bin 700, while the first-station gripper assembly 630 completes the loading process again.

[0085] The present invention provides a reciprocating reaming device for reaming the holes of aluminum tubes for air conditioners. Through the support assembly 200, the snap-fit ​​assembly 300, the end limit assembly 400, the loading mechanism 500 and the reaming mechanism 800, the loading, reaming and unloading of the aluminum tubes for air conditioners can be automatically controlled to realize automated reaming processing of the aluminum tubes for air conditioners. During the reaming processing, on the outside of the aluminum tubes for air conditioners, the non-reaming section is supported and fixed by the cooperation of the first positioning groove 2511 and the second positioning groove 341, and the reaming section is covered by the first protective groove 2521 and the second protective groove 342. After reaming, the reaming section abuts against the first protective groove 2521 on the outside, and the reaming section and the non-reaming section remain coaxial and will not be damaged, thereby improving the success rate of reaming and saving labor costs.

[0086] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "back" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0087] In the description of the present invention, it should be noted that, unless otherwise clearly specified or limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0088] The above-described embodiments merely illustrate the implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A reciprocating hole expanding device for expanding the hole of an air conditioner aluminum tube, characterized in that: It comprises a frame (100), on which a positioning mechanism and a hole-expanding mechanism (800) are arranged; The positioning mechanism comprises a support assembly (200), a buckling assembly (300) and an end stop assembly (400); the support assembly (200) is fixed on the frame (100) and supported by the air-conditioning aluminum tube to be expanded below; The movable end of the fastening assembly (300) can be moved to the top of the support assembly (200), or moved from the top of the support assembly (200) to one side; the fastening assembly (300) and the support assembly (200) are fastened to each other to wrap and limit the air-conditioning aluminum tube; the end limit assembly (400) is installed on the movable end of the fastening assembly (300) and abuts against the non-expanded end of the air-conditioning aluminum tube; the expanding mechanism (800) is located at one end of the support assembly (200) away from the end limit assembly (400), and the expanding mechanism (800) expends the air-conditioning aluminum tube.

2. A reciprocating hole expanding device for expanding the hole of an air conditioner aluminum tube according to claim 1, characterized in that: The support assembly (200) comprises a bottom mounting plate (210), a support sleeve (220), a positioning sleeve (230), a support plate (240) and a support mold (250); The bottom mounting plate (210) is fixed to the bottom of the frame (100); the support sleeve (220) is vertically arranged and fixed to the upper side of the bottom mounting plate (210); a plurality of the support sleeves (220) are arranged at intervals along the length direction; and the positioning sleeve (230) is provided on each of the support sleeves (220); One end of the positioning sleeve (230) is inserted into the supporting sleeve (220), and the other end is fixedly supported by the supporting plate (240) from below; a first locking member (260) for locking the positioning sleeve (230) is provided on the supporting sleeve (220); The upper side of the support plate (240) is detachably connected to the support mold (250); the support mold (250) supports the air-conditioning aluminum tube.

3. A reciprocating hole expanding device for expanding the hole of an air conditioner aluminum tube according to claim 2, characterized in that: The supporting mold (250) comprises a first supporting mold base (251) and a second supporting mold base (252); The upper side of the support plate (240) is provided with a mounting groove (241), the inner side wall of the mounting groove (241) forms a mounting step (242), and the mounting step (242) is connected to the support mold (250); A first positioning groove (2511) is formed on the upper side of the first supporting die seat (251), the cross section of the first positioning groove (2511) is semicircular, the diameter of the first positioning groove (2511) is the same as the outer diameter of the air-conditioning aluminum tube to be expanded, and both ends pass through the two ends of the first supporting die seat (251), and the first positioning groove (2511) is used to provide positional support for the non-expanded section of the air-conditioning aluminum tube; A first protective groove (2521) is formed on the upper side of the second supporting mold base (252); the cross section of the first protective groove (2521) is semicircular, and the diameter of the first protective groove (2521) is the same as the diameter of the hole to be expanded in the air-conditioning aluminum tube; A positioning column (2522) is integrally formed at one end of the second supporting mold base (252) close to the first supporting mold base (251); a positioning hole (2512) is formed at one end of the first supporting mold base (251) close to the second supporting mold base (252), and the positioning column (2522) is inserted into the positioning hole (2512); A first arc-shaped closing opening (2523) is formed at one end of the second supporting mold base (252) close to the first supporting mold base (251); one end of the first arc-shaped closing opening (2523) has a larger diameter and is aligned with the first protective groove (2521), and the other end has a smaller diameter and is aligned with the first positioning groove (2511).

4. A reciprocating hole expanding device for expanding the hole of an air conditioner aluminum tube according to claim 3, characterized in that: Two discharge openings (2513) are provided on the first supporting mold base (251) at intervals; one end of the discharge opening (2513) passes through the upper and lower ends of the first supporting mold base (251), and the width of the discharge opening (2513) is greater than the width of the first positioning groove (2511); A discharge cavity (231) is formed in the positioning sleeve (230), and the discharge cavity (231) is connected to the discharge port (2513); an ejection assembly (270) is provided in the discharge cavity (231); The ejection assembly (270) includes an electric push rod (271), a first guide column (272), and a discharge plate (273); The electric push rod (271) is fixed in the discharge chamber (231), the piston end of the electric push rod (271) is connected to the first guide column (272), the first guide column (272) is slidably connected to the discharge chamber (231), and one end of the first guide column (272) away from the electric push rod (271) is fixedly connected to the discharge plate (273); The discharge plate (273) is rectangular in shape and is embedded in the discharge port (2513). A discharge groove (2731) is provided at one end of the discharge plate (273) away from the first guide column (272). The discharge groove (2731) is arc-shaped, and the air-conditioning aluminum tube can be embedded in the discharge groove (2731). When the air-conditioning aluminum tube is expanded, the height of the discharge groove (2731) is not higher than the height of the first positioning groove (2511); after the expansion is completed, the electric push rod (271) can drive the discharge plate (273) to rise upward and protrude from the first positioning groove (2511).

5. The reciprocating hole expanding device for expanding the hole of an air conditioner aluminum tube according to claim 3, characterized in that: The fastening assembly (300) comprises a supporting vertical plate (310), a guide rail (320), a mounting seat (330), a fastening mold (340), a lifting control cylinder (350) and a horizontal control cylinder (360); The supporting upright plates (310) are vertically arranged, and two of them are fixed at intervals, and are respectively located on both sides of the supporting assembly (200); Two guide rails (320) are arranged at intervals, and the two guide rails (320) are horizontally fixed between the supporting vertical plates (310), and the distance between the guide rails (320) is greater than the length of the air-conditioning aluminum tube; The guide rail (320) is slidably connected to the mounting seat (330), and the horizontal control cylinder (360) is fixed on the supporting vertical plate (310) and drives the mounting seat (330) to move along the length direction of the guide rail (320). The mounting seat (330) can move to the top of the support assembly (200) or to the side of the support assembly (200); The snap-fit ​​mold (340) is located between the mounting seat (330) and the supporting mold (250); a plurality of second guide posts (370) are fixed to a side of the snap-fit ​​mold (340) close to the mounting seat (330), and the mounting seat (330) is slidably connected to the second guide posts (370); A lifting control cylinder (350) is fixed on the upper side of the mounting seat (330), and a piston end of the lifting control cylinder (350) passes through the mounting seat (330) and is fixedly connected to the fastening mold (340); A second positioning groove (341) and a second protective groove (342) are formed on a side of the fastening mold (340) close to the supporting mold (250); the second positioning groove (341) and the first positioning groove (2511) have the same diameter, and the second protective groove (342) and the first protective groove (2521) have the same diameter; when the fastening mold (340) is fastened with the supporting mold (250), the first positioning groove (2511) and the second positioning groove (341) are aligned, and the first protective groove (2521) and the second protective groove (342) are aligned.

6. A reciprocating hole expanding device for expanding the hole of an air conditioner aluminum tube according to claim 5, characterized in that: The end limiting assembly (400) comprises a dual-exhaust cylinder (410), a limiting plate (420), a limiting sleeve (430) and a limiting column (440); The dual-exhaust cylinder (410) is fixed on the mounting seat (330), and the piston end of the dual-exhaust cylinder (410) is fixedly connected to the limit plate (420). The limit plate (420) is located at an end of the mounting seat (330) away from the reaming mechanism (800), and the limit plate (420) extends to below the second positioning groove (341); The limiting sleeve (430) is fixedly mounted on the limiting plate (420). One end of the limiting column (440) is inserted into the limiting sleeve (430), and the other end is close to the second positioning groove (341), and the limiting column (440) is concentrically arranged with the second positioning groove (341). When the dual-row cylinder (410) is shortened, the limiting column (440) can be inserted into the second positioning groove (341); the diameter of the end of the limiting column (440) close to the second positioning groove (341) is the same as the diameter of the air-conditioning aluminum tube to be expanded; A second locking member (450) for locking the limiting column (440) is provided on the outside of the limiting sleeve (430).

7. The reciprocating hole expanding device for expanding the hole of an air conditioner aluminum tube according to claim 3, characterized in that: The device also includes a loading mechanism (500), a material moving mechanism (600) and a material unloading box (700); The loading mechanism (500) and the unloading box (700) are located on both sides of the positioning mechanism and at both ends of the frame (100); The material moving mechanism (600) is located on the top of the frame (100) and can clamp the air-conditioning aluminum tube to be expanded when moving horizontally, and control the movement of the air-conditioning aluminum tube.

8. The reciprocating hole expanding device for expanding the hole of an air conditioner aluminum tube according to claim 7, characterized in that: The feeding mechanism (500) comprises a feeding box (510), a feeding assembly (520) and an elastic scraper (530); An opening is formed at the upper end of the loading box (510), and a support column (511) is fixed on one side of the loading box (510) close to the opening. The support column (511) is horizontally arranged, and an operating sleeve (512) is sleeved on the support column (511); An isolation plate (513) is provided in the loading box (510), the isolation plate (513) and the operating sleeve (512) are fixedly connected, and a material cavity (514) is formed on one side of the isolation plate (513); The ejection assembly (520) includes an ejection cylinder (521), an ejection frame (522) and a V-shaped plate (523); The ejection cylinder (521) is fixed below the loading box (510), and the piston end of the ejection cylinder (521) is fixedly connected to the lower side of the ejection frame (522); The ejecting frame (522) includes a bottom fixing plate (5221) fixed to the ejecting cylinder (521), a vertically arranged third guide column (5222), and a top fixing plate (5223) fixed to the top of the third guide column (5222); The third guide column (5222) passes through the loading box (510), with one end located inside the loading box (510) and the other end located outside the loading box (510); The V-shaped plate (523) is fixed on the top fixing plate (5223), and a V-shaped groove (5231) is formed on the upper side of the V-shaped plate (523), the maximum width of the V-shaped groove (5231) is smaller than the diameter of the air-conditioning aluminum tube, and the length direction of the V-shaped groove (5231) is parallel to the length direction of the first positioning groove (2511); One end of the elastic scraper (530) is fixed to the inner wall of the loading box (510), and the other end is arc-shaped and located directly above the V-shaped plate (523); when the V-shaped plate (523) moves upward to the maximum position, the vertical distance between the V-shaped plate (523) and the elastic scraper (530) is between one and two times the diameter of the air conditioner aluminum tube.

9. The reciprocating hole expanding device for expanding the hole of an air conditioner aluminum tube according to claim 8, characterized in that: The material transfer mechanism (600) includes a fourth guide column (610), a material transfer plate (620), a first station clamping assembly (630), a second station clamping assembly (640) and a horizontal driving cylinder (650); Two fourth guide posts (610) are arranged at intervals, and the two fourth guide posts (610) are fixed on the frame (100) at intervals; the two fourth guide posts (610) are parallel to each other, one end of the fourth guide post (610) is close to the loading box (510), and the other end is close to the unloading box (700), and the fourth guide post (610) covers the positioning mechanism; The material moving plate (620) is slidably connected to the fourth guide column (610), and the horizontal driving cylinder (650) is fixed on the frame (100) and drives the material moving plate (620) to move horizontally; The first station clamping assembly (630) and the second station clamping assembly (640) are installed at intervals on the lower side of the material transfer plate (620); the distance between the first station clamping assembly (630) and the second station clamping assembly (640), the distance between the first positioning groove (2511) and the V-shaped groove (5231), and the distance between the first positioning groove (2511) and the material box (700) are the same; The first station clamping assembly (630) and the second station clamping assembly (640) both include a vertical drive cylinder (641), a connecting plate (642) and a pneumatic clamping claw (643); The vertical driving cylinder (641) is fixed on the material moving plate (620), and the piston end of the vertical driving cylinder (641) is fixedly connected to a connecting plate (642). The connecting plate (642) is arranged horizontally. The pneumatic clamping jaw (643) is fixed on a side of the connecting plate (642) away from the vertical driving cylinder (641). Two pneumatic clamping jaws (643) are arranged at intervals along the length direction of the V-shaped groove (5231).

10. The reciprocating hole expanding device for expanding the hole of an air conditioner aluminum tube according to claim 3, characterized in that: The reaming mechanism (800) comprises a mounting block (810), a lifting block (820), a telescopic member (830) and a reamer (840); The mounting block (810) is fixed on the frame (100), and a rectangular adjustment hole (811) is opened at the upper end of the mounting block (810); one end of the lifting block (820) is inserted into the adjustment hole (811), and the other end is located above the mounting block (810); a third locking member (850) is provided on the mounting block (810), and the third locking member (850) locks the lifting block (820) when it slides in the vertical direction; the telescopic member (830) is fixed on the upper end of the lifting block (820), and the telescopic end of the telescopic member (830) is connected to the reamer (840); the reamer (840) is coaxially arranged with the first positioning groove (2511).

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