Punching system for aluminum alloy door and window assembly

Abstract

The invention relates to the technical field of aluminum alloy door and window processing, and discloses a punching system for an aluminum alloy door and window assembly, which comprises a rack, a punching device arranged on the rack, a positioning device and an operation table, the punching device comprises a punching support, a punching head arranged below the punching support and an adjusting mechanism for controlling the height of the punching head, the adjusting mechanism comprises an adjusting frame, an advancing rod and a retracting rod, the advancing rod and the retracting rod are arranged on the adjusting frame, and the advancing rod and the retracting rod control the extending length of the punching head. The advancing rod controls the punching head to move downwards, the retracting rod controls the punching head to move upwards, the positioning device comprises a centering part and a pressing part, the operation table is arranged on the machine frame, the centering part is arranged between the machine frame and the operation table, the pressing part is arranged above the operation table, and the punching head is arranged on the operation table. The device has the effects of wide application range and high automation degree of the device structure.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum alloy door and window processing, and particularly relates to a punching system for aluminum alloy door and window components. Background Art

[0002] Aluminum alloy doors and windows refer to doors and windows made of aluminum alloy extrusion profiles as frames, mullions, and sash materials, which are abbreviated as aluminum doors and windows. Aluminum alloy doors and windows include those with aluminum alloy as the load-bearing members (members that bear and transmit their own weight and loads) and those combined with wood or plastic. The profiles and glass styles of aluminum doors vary between the north and the south. In the north, the main features are thick aluminum materials and steady styles. In the south, the main features are diverse aluminum material shapes and lively styles.

[0003] The Chinese invention patent with the publication number CN112453188A discloses a forming and punching device for aluminum alloy doors and windows and its punching method, including a bottom plate, a fixing mechanism, a clamping mechanism, a driving mechanism, and a punching mechanism. On both sides of the top surface of the bottom plate, there are a pair of moving plates, and a clamping mechanism is provided at the front end of the inner side of each moving plate. On the back of the bottom plate, there is an L-shaped cross plate, and a rectangular box is provided at the top of the L-shaped cross plate. A driving mechanism is installed in the rectangular box, and a rectangular frame is provided at the bottom of the trapezoidal slider in the driving mechanism, and a punching mechanism is installed in the rectangular frame. The present invention also discloses a punching method for a forming and punching device for aluminum alloy doors and windows. Through the coordinated use of each mechanism, the present invention solves the problems that the existing punching devices cannot freely change the hole pitch and the plate parts are not firmly fixed, and has a simple structure and convenient operation, increases the stability during the fixation of the plate parts, can freely change the hole pitch as needed, and further improves the punching accuracy. However, this device can only adjust the punching spacing. Sometimes, unilateral punching or bilateral through punching is required for aluminum alloy rods, and moreover, the thickness models of some aluminum alloy rods are different, and it is necessary to adjust or replace the punching device inside the punching part, with relatively complex operations and time-consuming and laborious. Summary of the Invention

[0004] The purpose of the present invention is to provide a punching system for aluminum alloy door and window components, which has the effects of wide application range and high degree of automation of the device structure.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a punching system for aluminum alloy door and window assemblies, comprising a frame, a punching device arranged on the frame, a positioning device and an operating table, the punching device comprising a punching bracket, a punching head arranged below the punching bracket and an adjusting mechanism for controlling the height of the punching head, the adjusting mechanism comprising an adjusting frame and a forward rod and a retraction rod arranged on the adjusting frame, the forward rod and the retraction rod control the extension length of the punching head, the forward rod controls the downward movement of the punching head, and the retraction rod controls the upward movement of the punching head, the positioning device comprises a centering piece and a pressing piece, the operating table is arranged on the frame, the centering piece is arranged between the frame and the operating table, and the pressing piece is arranged above the operating table.

[0006] By adopting the above technical scheme, it is possible to adapt to the multi-thickness punching process of aluminum alloy rods. The rods to be processed are placed on the operating table, and then positioned at the appropriate position using a positioning device. The cylinder drives the punching frame to move up and down to realize the punching process. The driving motor on the frame will drive the entire punching bracket to move left and right through the screw rod to realize punching at different positions. At the same time, the forward rod and the retraction rod can adjust the punching head up and down to achieve the height change of the punching head. When the movement stroke of the upper driving cylinder remains unchanged, the height change of the lower punching head can realize punching of aluminum alloy rods of different thicknesses and in different ways.

[0007] The present invention is further configured as follows: the adjustment mechanism also includes a punching frame, an adjustment gear, an adjustment ratchet, an adjustment rack and an adjustment pawl, the advancing rod and the retraction rod are both vertically slidably connected to the punching frame, the punching frame is vertically slidably connected to the punching bracket, the punching head is fixedly arranged below the punching frame, the adjustment gear is coaxially fixedly connected to the adjustment ratchet, the adjustment gear is rotatably connected to the punching frame, the adjustment gear is located between the advancing rod and the retraction rod, the advancing rod and the retraction are both rotatably connected with an adjustment pawl, the adjustment pawl cooperates with the adjustment ratchet, the adjustment rack is vertically fixedly arranged on the advancing rod, and the adjustment gear is meshed with the adjustment rack.

[0008] The present invention is further configured as follows: an adjusting spring is connected between the bottom of the advancing rod, the retracting rod and the punching frame.

[0009] The present invention is further configured as follows: a springback sheet is provided on the advancing frame and the retracting rod, the springback sheet is elastic, and the springback sheet conflicts with the adjusting pawl.

[0010] By adopting the above technical solution, when it is necessary to adjust the punching height, if it is necessary to extend the length of the punching head, by pressing the forward rod, the forward rod will drive the adjusting ratchet pawl to move downward. During the downward movement of the adjusting ratchet pawl, it will push the adjusting ratchet wheel to rotate. The adjusting ratchet wheel and the adjusting gear are coaxially fixedly connected, so the adjusting gear will also rotate. The adjusting gear meshes with the adjusting rack, and the adjusting rack is arranged on the punching frame. Therefore, the adjusting rack will drive the punching frame to move downward, realizing the downward adjustment of the punching head below the punching frame, so that the punching height changes. On the contrary, if the retraction rod is pressed, it will drive the adjusting rack to move upward, thus realizing the upward adjustment of the punching height. Among them, when the retraction rod or the forward rod is pressed, when the adjusting ratchet wheel moves downward, the adjusting ratchet pawl will be clamped in the ratchet teeth of the adjusting ratchet wheel, thus driving the rotation of the adjusting ratchet wheel. When the retraction rod or the forward rod is released, the lower adjusting spring will rebound, realizing the upward rebound of the retraction rod or the forward rod. Since the adjusting ratchet pawl is an inclined surface, the rebound piece is arranged so that when the retraction rod or the forward rod moves upward, the rebound piece will push the adjusting ratchet pawl to move to the upper ratchet teeth of the adjusting ratchet wheel, facilitating the next adjustment. During this process, it will not affect the adjusting ratchet wheel because there is a limiting mechanism below the adjusting ratchet wheel for limiting.

[0011] A further setting of the present invention is that: a limiting mechanism is arranged on the punching frame, and the limiting mechanism includes a limiting cylinder, a limiting head, and a limiting spring. The limiting cylinder is vertically arranged on the punching frame, the limiting head is vertically slidably inserted into the limiting cylinder, and both ends of the limiting spring are respectively connected between the limiting cylinder and the limiting head.

[0012] A further setting of the present invention is that: the upper end of the limiting head is conical, and the limiting spring controls the limiting head to be in contact with the adjusting ratchet wheel.

[0013] By adopting the above technical solution, when the adjusting ratchet pawl drives the adjusting ratchet wheel to rotate, in order to prevent the adjusting ratchet wheel from possibly reversing due to the impact force during the punching process, the limiting mechanism can play a limiting role, and the limiting spring will drive the limiting head to cooperate with the ratchet teeth on the adjusting ratchet wheel to limit the rotation of the adjusting ratchet wheel.

[0014] A further setting of the present invention is as follows: The centering member includes a centering bottom plate, a centering rod, a centering frame, a centering gear, a centering rack, and a centering motor. The centering bottom plate is arranged on the frame below the operation table. There are two centering frames, and the two centering frames are slidably connected to the centering bottom plate. The centering gear is horizontally rotatably connected to the centering bottom plate. The output end of the centering motor is coaxially and fixedly connected to the centering gear. There are two centering racks, and the two centering racks are slidably connected to the centering bottom plate and respectively mesh with both sides of the centering gear. The two centering racks are respectively fixedly connected to the two centering frames. The centering rod is vertically and fixedly connected to the centering frame.

[0015] By adopting the above technical solution, the centering motor drives the centering gear to rotate. During the rotation of the centering gear, it will drive the two centering racks to approach or move away from each other. When the two centering racks approach or move away from each other, they can drive the two centering frames to approach or move away from each other, enabling the centering rod to perform a guiding and centering operation on the workpiece on the operation table, so that the workpiece can be located at the working position to be processed.

[0016] A further setting of the present invention is as follows: The pressing member includes a pressing frame, a pressing rod, a pressing rack, a rotating rod, and a conversion member. The pressing frame is arranged on the frame. The pressing rack is slidably connected to the pressing frame and meshes with the centering gear. The rotating rod is rotatably arranged on the pressing frame. The pressing rod is horizontally and fixedly arranged above the rotating rod. The pressing rack is connected to the rotating rod through a conversion member. The pressing rack controls the rotation or up-and-down movement of the rotating rod through the rotating member.

[0017] A further setting of the present invention is as follows: The conversion member includes a helical gear, a helical rack, a limiting groove, and a limiting rod. A helical gear is coaxially arranged below the rotating rod. A helical rack is arranged at the end of the pressing rack. The pressing rack meshes with the helical gear below the rotating rod through the helical rack. A limiting groove is opened on the rotating rod. A limiting rod is horizontally arranged on the pressing frame. The limiting rod is movably inserted into the limiting groove.

[0018] A further setting of the present invention is as follows: The limiting groove includes a horizontal groove and an axial groove. The end of the horizontal groove is communicated with the end of the axial groove.

[0019] By adopting the above technical solution, when the central gear rotates, the central gear will drive the pressing rack to move. When the pressing rack moves, the inclined rack on the pressing rack will drive the rotating rod to rotate by controlling the bevel gear. When the rotating rod rotates, it will drive the pressing frame to rotate. When the pressing rod rotates above the workpiece and the limiting rod is located in the horizontal groove, and the rotating rod continues to rotate, the limiting rod is located at the end of the axial groove. Then, the bevel gear on the lower end of the rotating rod will move downward along the inclined rack, and the pressing rod above the rotating rod will move downward to press the workpiece.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The punching system in the present invention can adapt to the punching process of aluminum alloy rods with multiple thicknesses. Place the rod to be processed on the operating table, and then use the positioning device to position it to an appropriate position. The air cylinder drives the punching frame to move up and down to realize the punching process. The driving motor on the machine frame will drive the entire punching bracket to move left and right through the lead screw to realize punching at different positions. At the same time, the forward rod and the retraction rod can adjust the punching head up and down to change the height of the punching head. Without changing the movement stroke of the upper driving air cylinder, the height change of the lower punching head can realize punching of aluminum alloy rods with different thicknesses and different methods.

[0022] 2. When it is necessary to adjust the punching height, if it is necessary to extend the length of the punching head, by pressing the forward rod, the forward rod will drive the adjusting pawl to move downward. During the downward movement of the adjusting pawl, it will push the adjusting ratchet to rotate. The adjusting ratchet and the adjusting gear are coaxially fixedly connected, so the adjusting gear will also rotate. The adjusting gear meshes with the adjusting rack, and the adjusting rack is arranged on the punching frame. Therefore, the adjusting rack will drive the punching frame to move downward to realize the downward adjustment of the punching head below the punching frame, so that the punching height changes. On the contrary, if the retraction rod is pressed, it will drive the adjusting rack to move upward, thereby realizing the upward adjustment of the punching height. Among them, when the retraction rod or the forward rod is pressed and the adjusting ratchet moves downward, the adjusting pawl will be clamped in the ratchet teeth of the adjusting ratchet to drive the rotation of the adjusting ratchet. When the retraction rod or the forward rod is released, the lower adjusting spring will rebound to realize the upward rebound of the retraction rod or the forward rod. Since the adjusting pawl is an inclined surface, the rebound piece is set so that when the retraction rod or the forward rod moves upward, the rebound piece will push the adjusting pawl to move to the upper ratchet teeth of the adjusting ratchet for convenient next adjustment, and during this process, it will not affect the adjusting ratchet, which is because there is a limiting mechanism below the adjusting ratchet for limiting. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 is the structural schematic diagram of the present invention.

[0025] Figure 2 is the front view structural schematic diagram of the punching device of the present invention.

[0026] Figure 3 is the rear view structural schematic diagram of the punching device of the present invention.

[0027] Figure 4 is the exploded structural schematic diagram of the punching device of the present invention.

[0028] Figure 5 is the structural schematic diagram of the centering member and the pressing member of the present invention.

[0029] Figure 6 is the partial exploded structural schematic diagram of the centering member of the present invention.

[0030] Figure 7 is the front view structural schematic diagram of the centering member of the present invention.

[0031] Figure 8 is the internal structural schematic diagram of the pressing member of the present invention.

[0032] In the figure, 1, frame; 11, operating table; 2, punching device; 21, punching bracket; 22, punching head; 23, forward rod; 24, retraction rod; 25, adjusting member; 251, punching frame; 252, adjusting gear; 253, adjusting ratchet; 254, adjusting rack; 255, adjusting pawl; 256, adjusting spring; 257, rebounding piece; 26, limiting mechanism; 261, limiting cylinder; 262, limiting head; 263, limiting spring; 3, centering member; 31, centering bottom plate; 32, centering rod; 33, centering frame; 34, centering gear; 35, centering rack; 36, centering motor; 4, pressing member; 41, pressing frame; 42, pressing rod; 43, pressing rack; 431, inclined rack; 44, rotating rod; 441, helical gear; 442, horizontal groove; 443, axial groove; 45, limiting rod. Detailed embodiments

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiments, such as Figure 1 , Figure 2 , Figure 3 shown, a punching system for aluminum alloy door and window components includes a frame 1, a punching device 2, a positioning device, and an operating table 11 provided on the frame 1. The punching device 2 includes a punching support 21, a punching head 22 provided below the punching support 21, and an adjusting mechanism for controlling the height of the punching head 22. The adjusting mechanism includes an adjusting frame and a forward rod 23 and a retracting rod 24 provided on the adjusting frame. The forward rod 23 and the retracting rod 24 control the elongation length of the punching head 22. The forward rod 23 controls the downward movement of the punching head 22, and the retracting rod 24 controls the upward movement of the punching head 22. The positioning device includes a centering member 3 and a pressing member 4. The operating table 11 is provided on the frame 1. The centering member 3 is provided between the frame 1 and the operating table 11, and the pressing member 4 is provided above the operating table 11.

[0035] The present invention can adapt to the punching process of aluminum alloy rods with multiple thicknesses. Place the rod to be processed on the operating table 11, and then use the positioning device to position it to an appropriate position. The air cylinder drives the punching frame 251 to move up and down to realize the punching process. The driving motor on the frame 1 drives the entire punching support 21 to move left and right through the lead screw to realize punching at different positions. At the same time, the forward rod 23 and the retracting rod 24 can adjust the punching head 22 up and down to realize the height change of the punching head 22. Without changing the movement stroke of the driving air cylinder above, the height change of the punching head 22 below can realize punching of aluminum alloy rods with different thicknesses and different methods.

[0036] Such as Figure 3 , Figure 3 , Figure 4As shown, the adjusting mechanism further includes a punching frame 251, an adjusting gear 252, an adjusting ratchet 253, an adjusting rack 254, and an adjusting pawl 255. The forward rod 23 and the retracting rod 24 are both vertically slidably connected to the punching frame 251. The punching frame 251 is vertically slidably connected to the punching support 21. The punching head 22 is fixedly arranged below the punching frame 251. The adjusting gear 252 and the adjusting ratchet 253 are coaxially and fixedly connected. The adjusting gear 252 is rotatably connected to the punching frame 251. The adjusting gear 252 is located between the forward rod 23 and the retracting rod 24. Adjusting pawls 255 are rotatably connected to both the forward rod 23 and the retracting rod 24. The adjusting pawls 255 cooperate with the adjusting ratchet 253. The adjusting rack 254 is vertically and fixedly arranged on the forward rod 23. The adjusting gear 252 meshes with the adjusting rack 254.

[0037] As Figure 4 shown, a adjusting spring 256 is connected between the bottoms of the forward rod 23 and the retracting rod 24 and the punching frame 251. Rebound pieces 257 are arranged on the forward frame and the retracting rod 24. The rebound pieces 257 are elastic. The rebound pieces 257 abut against the adjusting pawls 255.

[0038] When it is necessary to adjust the punching height, if it is necessary to extend the length of the punching head 22, by pressing the forward rod 23, the forward rod 23 will drive the adjusting pawl 255 to move downward. During the downward movement of the adjusting pawl 255, it will push the adjusting ratchet 253 to rotate. Since the adjusting ratchet 253 and the adjusting gear 252 are coaxially and fixedly connected, the adjusting gear 252 will also rotate. The adjusting gear 252 meshes with the adjusting rack 254. The adjusting rack 254 is arranged on the punching frame 251. Therefore, the adjusting rack 254 will drive the punching frame 251 to move downward, realizing the downward adjustment of the punching head 22 below the punching frame 251, so that the punching height changes. On the contrary, if the retracting rod 24 is pressed, it will drive the adjusting rack 254 to move upward, thereby realizing the upward adjustment of the punching height. Among them, when the retracting rod 24 or the forward rod 23 is pressed, when the adjusting ratchet 253 moves downward, the adjusting pawl 255 will be clamped in the ratchet teeth of the adjusting ratchet 253, thereby driving the rotation of the adjusting ratchet 253. When the retracting rod 24 or the forward rod 23 is released, the lower adjusting spring 256 will rebound, realizing the upward rebound of the retracting rod 24 or the forward rod 23. Since the adjusting pawl 255 is an inclined surface, the setting of the rebound piece 257 is that when the retracting rod 24 or the forward rod 23 moves upward, the rebound piece 257 will push the adjusting pawl 255 to move to the upper ratchet teeth of the adjusting ratchet 253, facilitating the next adjustment. And during this process, it will not affect the adjusting ratchet 253, because there is a limiting mechanism 26 below the adjusting ratchet 253 for limiting.

[0039] As Figure 4 shown, a limiting mechanism 26 is provided on the punching frame 251. The limiting mechanism 26 includes a limiting cylinder 261, a limiting head 262, and a limiting spring 263. The limiting cylinder 261 is vertically arranged on the punching frame 251. The limiting head 262 is vertically and slidably inserted into the limiting cylinder 261. Two ends of the limiting spring 263 are respectively connected between the limiting cylinder 261 and the limiting head 262.

[0040] As Figure 4 shown, the upper end of the limiting head 262 is conical. The limiting spring 263 controls the limiting head 262 to be in contact with the adjusting ratchet wheel 253.

[0041] When the adjusting pawl 255 drives the adjusting ratchet wheel 253 to rotate, to prevent the adjusting ratchet wheel 253 from possibly reversing due to the impact force during the punching process, the limiting mechanism 26 can play a limiting role. The limiting spring 263 will drive the limiting head 262 to cooperate with the ratchet teeth on the adjusting ratchet wheel 253 to limit the rotation of the adjusting ratchet wheel 253.

[0042] As Figure 5 、 Figure 6 、 Figure 7 shown, the centering member 3 includes a centering bottom plate 31, a centering rod 32, a centering frame 33, a centering gear 34, a centering rack 35, and a centering motor 36. The centering bottom plate 31 is arranged on the frame 1 below the operating table 11. Two centering frames 33 are provided. The two centering frames 33 are slidably connected to the centering bottom plate 31. The centering gear 34 is horizontally rotatably connected to the centering bottom plate 31. The output end of the centering motor 36 is coaxially and fixedly connected to the centering gear 34. Two centering racks 35 are provided. The two centering racks 35 are slidably connected to the centering bottom plate 31 and are respectively meshed with two sides of the centering gear 34. The two centering racks 35 are respectively fixedly connected to the two centering frames 33. The centering rod 32 is vertically and fixedly connected to the centering frame 33.

[0043] The centering motor 36 drives the centering gear 34 to rotate. During the rotation of the centering gear 34, it will drive the two centering racks 35 to approach or move away from each other. When the two centering racks 35 approach or move away from each other, they can drive the two centering frames 33 to approach or move away from each other, so that the centering rod 32 can perform a guiding and centering operation on the workpiece on the operating table 11, enabling the workpiece to be located at the working position to be processed.

[0044] As Figure 7 、 Figure 8As shown, the pressing member 4 includes a pressing frame 41, a pressing rod 42, a pressing rack 43, a rotating rod 44, and a conversion member. The pressing frame 41 is disposed on the frame 1. The pressing rack 43 is slidably connected to the pressing frame 41 and meshes with the centering gear 34. The rotating rod 44 is rotatably disposed on the pressing frame 41. The pressing rod 42 is horizontally and fixedly disposed above the rotating rod 44. The pressing rack 43 is connected to the rotating rod 44 through a conversion member. The pressing rack 43 controls the rotation or vertical movement of the rotating rod 44 through the rotating member.

[0045] As Figure 8 shown, the conversion member includes a helical gear 441, a helical rack 431, a limiting groove, and a limiting rod 45. A helical gear 441 is coaxially disposed below the rotating rod 44. A helical rack 431 is disposed at the end of the pressing rack 43. The pressing rack 43 meshes with the helical gear 441 below the rotating rod 44 through the helical rack 431. A limiting groove is formed on the rotating rod 44. A limiting rod 45 is horizontally disposed on the pressing frame 41. The limiting rod 45 is movably inserted into the limiting groove.

[0046] The limiting groove includes a horizontal groove 442 and an axial groove 443. The end of the horizontal groove 442 is communicated with the end of the axial groove 443.

[0047] When the centering gear 34 rotates, the centering gear 34 drives the pressing rack 43 to move. When the pressing rack 43 moves, the helical rack 431 on the pressing rack 43 drives the rotating rod 44 to rotate by controlling the helical gear 441. When the rotating rod 44 rotates, it drives the pressing frame 41 to rotate. The pressing rod 42 rotates to above the workpiece. The limiting rod 45 is located in the horizontal groove 442. The rotating rod 44 continues to rotate. The limiting rod 45 is located at the end of the axial groove 443. Then, the helical gear 441 at the lower end of the rotating rod 44 moves downward along the helical rack 431, and the pressing rod 42 above the rotating rod 44 moves downward to press the workpiece.

[0048] The punching system in the present invention can adapt to the punching process of aluminum alloy rods with multiple thicknesses. The rod to be processed is placed on the operating table 11, and then positioned to an appropriate position by a positioning device. The air cylinder drives the punching frame 251 to move up and down to realize the punching process. The driving motor on the frame 1 drives the entire punching bracket 21 to move left and right through a lead screw to realize punching at different positions. At the same time, the forward rod 23 and the retraction rod 24 can realize the up and down adjustment of the punching head 22 to realize the height change of the punching head 22. Without changing the movement stroke of the upper driving air cylinder, the height change of the lower punching head 22 can realize punching of aluminum alloy rods with different thicknesses and different methods.

Claims

1. A punching system for aluminum alloy door and window components, characterized in that: It includes a frame (1), a punching device (2) arranged on the frame (1), a positioning device, and an operating table (11). The punching device (2) includes a punching support (21), a punching head (22) arranged on the punching support (21), and an adjusting mechanism for controlling the height of the punching head (22). The adjusting mechanism includes an adjusting frame and a forward rod (23) and a retracting rod (24) arranged on the adjusting frame. The forward rod (23) and the retracting rod (24) control the extending length of the punching head (22). The forward rod (23) controls the downward movement of the punching head (22), and the retracting rod (24) controls the upward movement of the punching head (22). The positioning device includes a centering member (3) and a pressing member (4). The operating table (11) is arranged on the frame (1). The centering member (3) is arranged between the frame (1) and the operating table (11), and the pressing member (4) is arranged above the operating table (11).

2. The punching system for an aluminum alloy door and window assembly according to claim 1, wherein: The adjusting mechanism further includes a punching frame (251), an adjusting gear (252), an adjusting ratchet (253), an adjusting rack (254), and an adjusting pawl (255). The forward rod (23) and the retracting rod (24) are both vertically slidably connected to the punching frame (251). The punching frame (251) is vertically slidably connected to the punching support (21). The punching head (22) is fixedly arranged below the punching frame (251). The adjusting gear (252) and the adjusting ratchet (253) are coaxially and fixedly connected. The adjusting gear (252) is rotatably connected to the punching frame (251). The adjusting gear (252) is located between the forward rod (23) and the retracting rod (24). Adjusting pawls (255) are rotatably connected to both the forward rod (23) and the retracting rod. The adjusting pawl (255) cooperates with the adjusting ratchet (253). The adjusting rack (254) is vertically and fixedly arranged on the forward rod (23). The adjusting gear (252) meshes with the adjusting rack (254).

3. The punching system for an aluminum alloy door and window assembly according to claim 2, wherein: An adjusting spring (256) is connected between the bottoms of the forward rod (23) and the retracting rod (24) and the punching frame (251).

4. A punching system for an aluminum alloy door and window assembly according to claim 2, characterized in that: A resilient sheet (257) is arranged on the forward frame and the retracting rod (24). The resilient sheet (257) has elasticity and abuts against the adjusting pawl (255).

5. The punching system for an aluminum alloy door and window assembly according to claim 4, wherein: A limiting mechanism (26) is arranged on the punching frame (251). The limiting mechanism (26) includes a limiting cylinder (261), a limiting head (262), and a limiting spring (263). The limiting cylinder (261) is vertically arranged on the punching frame (251). The limiting head (262) is vertically slidably inserted into the limiting cylinder (261). The two ends of the limiting spring (263) are respectively connected between the limiting cylinder (261) and the limiting head (262).

6. The punching system for an aluminum alloy door and window assembly according to claim 5, wherein: The upper end of the limit head (262) is conical, and the limit spring (263) controls the contact between the limit head (262) and the adjusting ratchet wheel (253).

7. The punching system for an aluminum alloy door and window assembly according to claim 1, characterized in that: The centering member (3) includes a centering bottom plate (31), a centering rod (32), a centering frame (33), a centering gear (34), a centering rack (35), and a centering motor (36). The centering bottom plate (31) is arranged on the frame (1) below the operating table (11). Two centering frames (33) are arranged, and the two centering frames (33) are slidably connected to the centering bottom plate (31). The centering gear (34) is horizontally rotatably connected to the centering bottom plate (31). The output end of the centering motor (36) is coaxially and fixedly connected to the centering gear (34). Two centering racks (35) are arranged. The two centering racks (35) are slidably connected to the centering bottom plate (31) and are respectively meshed with both sides of the centering gear (34). The two centering racks (35) are respectively fixedly connected to the two centering frames (33). The centering rod (32) is vertically and fixedly connected to the centering frame (33).

8. A punching system for an aluminum alloy door and window assembly according to claim 7, characterized in that: The pressing member (4) includes a pressing frame (41), a pressing rod (42), a pressing rack (43), a rotating rod (44), and a conversion member. The pressing frame (41) is arranged on the frame (1). The pressing rack (43) is slidably connected to the pressing frame (41) and is meshed with the centering gear (34). The rotating rod (44) is rotatably arranged on the pressing frame (41). The pressing rod (42) is horizontally and fixedly arranged above the rotating rod (44). The pressing rack (43) and the rotating rod (44) are connected by the conversion member. The pressing rack (43) controls the rotation or up-and-down movement of the rotating rod (44) through the rotating member.

9. The punching system for an aluminum alloy door and window assembly according to claim 8, characterized in that: The conversion member includes a helical gear (441), a helical rack (431), a limiting groove, and a limiting rod (45). A helical gear (441) is coaxially arranged below the rotating rod (44). The end of the pressing rack (43) is provided with a helical rack (431). The pressing rack (43) is meshed with the helical gear (441) below the rotating rod (44) through the helical rack (431). A limiting groove is formed on the rotating rod (44). A limiting rod (45) is horizontally arranged on the pressing frame (41). The limiting rod (45) is movably inserted into the limiting groove.

10. A punching system for an aluminum alloy door and window assembly according to claim 9, characterized in that: The limiting groove includes a horizontal groove (442) and an axial groove (443). The end of the horizontal groove (442) is communicated with the end of the axial groove (443).

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