Door and window punching device

Abstract

The present invention relates to a door and window punching device, belonging to the field of punching devices. The door and window punching device includes a lower die mechanism and an upper die mechanism. The lower die mechanism has a punching groove; the upper die mechanism is used to make the plate fit with the punching groove, and the lower die mechanism includes a punching assembly, and the punching assembly is configured to protrude from the bottom wall of the punching groove when the plate fits with the punching groove; the upper die mechanism includes a partition movably arranged in the second shell to separate the second shell into a fifth cavity and a sixth cavity; a hydraulic pump is used to adjust the pressure of the fifth cavity and the sixth cavity; one end of the punching piece is connected to the partition, and the other end is located outside the second shell, and the punching piece is provided with a second punching hole adapted to the punching assembly; the second body is arranged on the partition; one end of the punching assembly is located in the second body, and the other end passes through the sixth cavity and is located outside the second shell, and the punching assembly has a fifth position and a sixth position; the fourth elastic member is used to make the punching assembly located in the sixth position.

Description

Technical Field

[0001] The invention belongs to the field of punching devices, and in particular relates to a door and window punching device. Background Art

[0002] Stamping is a metal processing process that uses dies and presses to apply pressure to metal sheets to cause them to undergo plastic deformation or separation, thereby obtaining parts of the desired shape and size. Stamping technology is widely used in industries such as automobiles, home appliances, electronics, and construction.

[0003] In order to facilitate installation during the manufacturing process of doors and windows, it is necessary to punch holes in the doors and windows. However, in the prior art, the door and window punching device generally completes the punching and punching of the door and window frames in sequence, that is, the punching and punching require different molds for processing. Therefore, multiple punching machines are required, or the molds need to be replaced during the processing. As a result, the doors and windows need to be positioned multiple times during the molding process, thereby reducing the processing accuracy of the doors and windows. Summary of the invention

[0004] In view of the above problems, an embodiment of the present application provides a door and window punching device, which can complete the stamping and punching of door and window frames in the same process, thereby improving the processing accuracy of doors and windows.

[0005] The embodiment of the present application provides a door and window punching device, comprising a lower die mechanism and an upper die mechanism. The lower die mechanism has a punching groove; the upper die mechanism is used to apply an external force to a plate member so that the plate member fits with the punching groove, the lower die mechanism comprises a punching assembly, and the punching assembly is configured to protrude from the bottom wall of the punching groove when the plate member fits with the punching groove; wherein the upper die mechanism comprises a second shell, a partition, a hydraulic pump, a punching member, a second body and a punching assembly, and a fourth elastic member. A partition is movably arranged in the second shell to separate the second shell into a fifth cavity and a sixth cavity; a hydraulic pump is used to adjust the pressure of the fifth cavity and the sixth cavity; one end of the stamping part is connected to the partition, and the other end passes through the sixth cavity and is located outside the second shell, and a second stamping hole adapted to the punching assembly is provided on the stamping part; a second body is arranged on the partition; one end of the stamping assembly is located in the second body, and the other end passes through the sixth cavity and is located outside the second shell, and the stamping assembly has a fifth position and a sixth position. In the fifth position, the side of the stamping part facing the lower die mechanism protrudes from the other end of the stamping assembly. In the sixth position and when the length of the stamping assembly outside the second shell is the longest, the other end of the stamping assembly is flush with the side of the stamping part facing the lower die mechanism; a fourth elastic member is used to provide elastic force to the stamping assembly so that the stamping assembly is located in the sixth position.

[0006] Specifically, when not working, the fourth elastic member drives the stamping assembly to be located at the sixth position, at which time the other end of the stamping assembly is flush with the side of the stamping member facing the lower die mechanism.

[0007] During the stamping process, the hydraulic pump drives and adjusts the pressure in the fifth cavity and the sixth cavity so that the pressure in the fifth cavity is greater than the pressure in the sixth cavity, so that the partition drives the stamping part and the second body to move toward the lower die mechanism, so that the second body drives the stamping assembly to move toward the lower die mechanism. External force is applied to the plate to make the plate fit with the stamping groove, and then the punching assembly protrudes from the bottom wall of the stamping groove, and the stamping assembly compresses the fourth elastic member to move to the fifth position, so that the side of the stamping part facing the lower die mechanism protrudes from the other end of the stamping assembly, and then the punching assembly cooperates with the second punching hole to punch the plate. And the sheet material cut off due to punching can be completely separated from the door and window frame.

[0008] Subsequently, the hydraulic pump drives the adjustment of the pressure in the fifth cavity and the sixth cavity so that the pressure in the sixth cavity is greater than the pressure in the fifth cavity, so that the partition drives the stamping part and the second body to move away from the lower mold mechanism, so that the stamping assembly no longer abuts against the punching assembly, and then the fourth elastic part drives the stamping assembly to the sixth position.

[0009] In the above technical solution, the door and window punching device can complete the stamping and punching of the door and window frames in the same process, so that the door and window processing accuracy is higher.

[0010] In some embodiments, the punching assembly includes a second cylinder and a punching rod. The second cylinder is disposed in the second body, and the fourth elastic member abuts against the second cylinder; one end of the punching rod is disposed in the second cylinder to separate the interior of the second cylinder into a seventh cavity and an eighth cavity, and the other end of the punching rod sequentially passes through the eighth cavity and the sixth cavity and is located outside the second shell; when the second cylinder is located in the fifth position, the seventh cavity is connected to the sixth cavity, and the eighth cavity is connected to the fifth cavity; when the second cylinder is located in the sixth position, the seventh cavity is connected to the fifth cavity, and the eighth cavity is connected to the sixth cavity.

[0011] Specifically, when not working, the fourth elastic member drives the stamping assembly to be located at the sixth position, at which time the seventh cavity is connected to the fifth cavity, and the eighth cavity is connected to the sixth cavity.

[0012] During the stamping process, the hydraulic pump drives and adjusts the pressure in the fifth and sixth cavities so that the pressure in the fifth cavity is greater than the pressure in the sixth cavity, so that the partition drives the stamping part and the second body to move toward the lower die mechanism, so that the second body drives the stamping assembly to move toward the lower die mechanism. At this time, the pressure in the seventh cavity is greater than the pressure in the eighth cavity, so that the stamping rod moves in the direction of compressing the eighth cavity so that the length of the stamping rod outside is the maximum, so that the end of the stamping rod outside the second shell is flush with the side of the stamping part facing the lower die mechanism. Then the punching assembly protrudes from the bottom wall of the stamping groove and abuts against the stamping rod, and at this time, the second cylinder body is driven to move to the fifth position through the stamping rod. In the fifth position, the seventh cavity is connected to the sixth cavity, and the eighth cavity is connected to the fifth cavity; thereby, the pressure of the seventh cavity is less than the pressure of the eighth cavity, causing the punching rod to move in the direction of compressing the seventh cavity, thereby continuing to move away from the punching assembly. At this time, due to the elastic recovery of the fourth elastic member, the second cylinder body is separated from the sixth position to separate the seventh cavity from the sixth cavity, and to separate the eighth cavity from the fifth cavity, so that the punching rod no longer moves.

[0013] Subsequently, the hydraulic pump drives the pressure in the fifth cavity and the sixth cavity to adjust so that the pressure in the sixth cavity is greater than the pressure in the fifth cavity, so that the partition drives the stamping part and the second body to move away from the lower die mechanism, thereby making the stamping rod away from the punching assembly, and then the stamping assembly can be driven by the fourth elastic member to further move to the sixth position, until the stamping assembly moves to the sixth position, because the stamping rod itself moves a distance away from the punching assembly, so that the side of the stamping part facing the punching assembly protrudes out of the other end of the stamping rod, and then it is convenient to accommodate the punched sheet material, so that the stamping part drives the punched sheet material to leave the door and window frame. When the second cylinder body is driven by the fourth elastic member to return to the sixth position, the seventh cavity is connected with the fifth cavity, and the eighth cavity is connected with the sixth cavity, so that the pressure of the seventh cavity is less than the pressure of the eighth cavity, and then the stamping rod moves in the direction of compressing the seventh cavity, so that the stamping rod continues to move in the direction away from the punching assembly, so as not to touch the punched sheet material. The punched plate is accommodated in the second punching hole.

[0014] Before the next punching preparation, the punching rod moves in the direction of compressing the eighth cavity so that the length of the punching rod outside is the largest, so that the end of the punching rod outside the second shell is flush with the side of the punching piece facing the lower die mechanism, so that the punched plate is discharged from the second punching hole, so as to facilitate the collection of the punched plate.

[0015] In some embodiments, the second cylinder body has a fifth flow channel and a sixth flow channel connected to the seventh cavity, and a seventh flow channel and an eighth flow channel connected to the eighth cavity, the second body has a fifth through hole and an eighth through hole connected to the fifth cavity and the interior of the second body, and has a sixth through hole and a seventh through hole connected to the sixth cavity and the interior of the second body, when the second cylinder body is in the fifth position, the sixth flow channel is connected to the sixth through hole, and the eighth flow channel is connected to the eighth through hole; when the second cylinder body is in the sixth position, the fifth flow channel is connected to the fifth through hole, and the seventh flow channel is connected to the seventh through hole.

[0016] In the above technical solution, the structure of connecting each cavity by means of flow channels and through holes is simple and easy to implement.

[0017] The lower mold mechanism includes a first shell, a first body, a first elastic member and a punching assembly and a second elastic member; the first shell has a high-pressure chamber and a low-pressure chamber; the first body is movably arranged in the first shell, and the first body has a first position and a second position. When in the first position, the high-pressure chamber and the low-pressure chamber are connected, and when in the second position, the first body separates the high-pressure chamber and the low-pressure chamber and compresses the volume of the high-pressure chamber; the first elastic member is used to provide elastic force to the first body so that the first body is located in the first position, and the first body moves to the second position during the process of the upper mold mechanism applying external force to the plate; a punching assembly The first end is located in the first body to divide the interior of the first body into a first cavity and a second cavity, the second cavity is connected to the high-pressure cavity, and the first cavity is connected to the low-pressure cavity. The punching assembly has a third position and a fourth position. When the first body is located in the first position and the punching assembly is located in the fourth position, the other end of the punching assembly is flush with the bottom wall of the punching groove. When the first body is located in the second position and the punching assembly is located in the third position, the other end of the punching assembly protrudes from the bottom wall of the punching groove. The second elastic member is used to provide elastic force to the punching assembly so that the punching assembly is located in the fourth position.

[0018] Specifically, when not working, due to the force of the first elastic member, the first body is in the first position, at which time the high-pressure chamber and the low-pressure chamber are connected to each other, so that the pressures of the first cavity and the second cavity are the same, and the punching assembly is located in the fourth position under the action of the second elastic member, at which time the bottom wall of the punching groove is flush with the punching assembly.

[0019] During the stamping process, the plate is first placed between the lower die mechanism and the upper die mechanism, and then pressure is applied to the plate through the upper die mechanism so that the plate is pressed into the stamping groove, so that the plate is stamped and formed. At this time, the first body is driven to move to the second position, thereby isolating the low-pressure chamber from the high-pressure chamber, and compressing the volume of the high-pressure chamber so that the pressure in the high-pressure chamber gradually increases, and the pressure of the second cavity gradually increases, so that the punching assembly moves to the third position, and the other end of the punching assembly protrudes from the bottom wall of the stamping groove to punch the door and window frames.

[0020] In the above technical solution, the door and window punching device can complete the stamping and punching of the door and window frames in the same process, so that the door and window processing accuracy is higher.

[0021] In some embodiments, the punching assembly includes a first cylinder body and a punching rod; the first cylinder body is arranged in the first body to divide the interior of the first body into the second cavity and the first cavity, and the second elastic member abuts against the first cylinder body; one end of the punching rod is arranged in the first cylinder body to divide the interior of the first cylinder body into a third cavity and a fourth cavity, the first body has a first punching hole connecting the punching groove and the first cavity, the other end of the punching rod passes through the third cavity and the first cavity in sequence and is located in the first punching hole, when the first cylinder body is in the fourth position, the third cavity is connected to the high-pressure cavity, and the fourth cavity is connected to the low-pressure cavity; when the first cylinder body is in the third position, the fourth cavity is connected to the high-pressure cavity, and the third cavity is connected to the low-pressure cavity.

[0022] Specifically, when not in operation, the first body is located at the first position, and the punching assembly is located at the fourth position under the action of the second elastic member, at which time the third cavity is connected to the high-pressure cavity, and the fourth cavity is connected to the low-pressure cavity. However, since the high-pressure cavity and the low-pressure cavity are not isolated at this time, the pressures are the same, and the punching rod does not move.

[0023] During the stamping process, the first body is located in the second position and the punching assembly is located in the third position. At this time, the fourth cavity is connected to the high-pressure cavity, and the third cavity is connected to the low-pressure cavity, thereby pushing one end of the stamping rod to move in the direction of extruding the third cavity so that the stamping rod can stamp the plate.

[0024] In the above technical solution, the design of the punching rod enables the punching assembly to further move toward the bottom wall of the protruding punching groove, thereby facilitating the punching of the plate.

[0025] In some embodiments, the punching assembly also includes a third elastic member, which is used to provide elastic force to the punching rod to drive the punching rod to compress the third cavity. During the movement of the first cylinder from the fourth position to the third position, the third cavity is connected to the high-pressure cavity, and the fourth cavity is connected to the low-pressure cavity.

[0026] Specifically, when not in operation, the first body is located at the first position, and the punching assembly is located at the fourth position under the action of the second elastic member, at which time the third cavity is connected to the high-pressure cavity, and the fourth cavity is connected to the low-pressure cavity. However, since the high-pressure cavity and the low-pressure cavity are not isolated at this time, the pressures are the same, so that the third elastic member can drive the punching rod to drive the punching rod to compress the third cavity. At this time, the length of the punching rod outside the first cylinder is the largest, and the punching rod is flush with the bottom wall of the punching groove.

[0027] During the stamping process, the first body moves to the second position and drives the first cylinder body to move through the second elastic member to separate the high-pressure chamber and the low-pressure chamber and compress the high-pressure chamber, thereby increasing the pressure in the second chamber. When the pressure difference between the second chamber and the first chamber is less than the preload force of the second elastic member, the first cylinder body is stationary relative to the first body and is still in the third position. At this time, the difference between the pressure of the third chamber and the pressure of the fourth chamber is less than the elastic force of the third elastic member, thereby making the stamping rod stationary relative to the first cylinder body, that is, during this period, the first body, the first cylinder body and the stamping rod move together. Then, when the pressure difference between the pressure in the second cavity and the pressure in the first cavity is greater than the preload force of the second elastic member, the first cylinder moves from the fourth position to the third position relative to the first body, at which time the third cavity is connected to the high-pressure cavity, and the fourth cavity is connected to the low-pressure cavity, that is, as the first body continuously compresses the high-pressure cavity, the pressure difference between the third cavity and the fourth cavity gradually increases, thereby causing the punching rod to overcome the elastic force of the third elastic member and move in the direction of compressing the fourth cavity, so that when the first cylinder moves relative to the first body, the punching rod can be stationary relative to the first body to block the first punching hole and ensure the stamping surface quality near the first punching hole during stamping. During this period, the stamping of the sheet is completed. Then, the first cylinder moves completely to the third position, the fourth cavity is connected to the high-pressure cavity, and the third cavity is connected to the low-pressure cavity. At this time, the difference between the pressure of the fourth cavity and the pressure of the third cavity and the elastic force of the third elastic member act together on the punching rod, so that the punching rod can quickly compress the third cavity and punch the sheet.

[0028] In the above technical solution, the punching rod can be stationary relative to the first body when the first cylinder moves to the third position, thereby improving the stamping surface quality near the first stamping hole during stamping.

[0029] In some embodiments, the first cylinder body has a first flow channel and a second flow channel connected to the fourth cavity, and a third flow channel and a fourth flow channel connected to the third cavity, the first body has a first through hole and a fourth through hole connected to the low-pressure cavity and the interior of the first body, and has a second through hole and a third through hole connected to the high-pressure cavity and the interior of the first body, when the first cylinder body is in the third position, the second flow channel is connected to the second through hole, and the fourth flow channel is connected to the fourth through hole; when the first cylinder body is in the fourth position, the first flow channel is connected to the first through hole, and the third flow channel is connected to the third through hole.

[0030] In the above technical solution, the structure of connecting each cavity by means of flow channels and through holes is simple and easy to implement.

[0031] In some embodiments, the lower mold mechanism also includes two bending parts, which are rotatably arranged on the outer surface of the first shell. When the first body moves toward the second position, it abuts against one end of the two bending parts respectively to drive the other ends of the two bending parts to rotate in a direction close to each other to form the stamping groove.

[0032] In the above technical solution, during the process of the first body moving toward the second position, it abuts against one end of the two bending parts respectively to drive the other ends of the two bending parts to rotate in a direction close to each other to form the stamping groove. After the stamping is completed, when the first elastic part drives the first body to reset, it is convenient for the operator to open the stamping groove and remove the door and window frames. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 An exploded view of a door and window punching device provided in an embodiment of the present invention;

[0035] Figure 2 When the upper mold mechanism provided in the embodiment of the present invention is located at the sixth position Figure 1 Cross-sectional view of middle HH;

[0036] Figure 3 When the upper mold mechanism provided in the embodiment of the present invention is located at the fifth position Figure 1 Cross-sectional view of middle HH;

[0037] Figure 4for Figure 2 A partial enlarged view of the part I in the middle;

[0038] Figure 5 for Figure 2 A partial enlarged view of the J in the middle;

[0039] Figure 6 for Figure 2 A partial enlarged view of K in the middle;

[0040] Figure 7 for Figure 2 A partial enlarged view of the L in the middle;

[0041] Figure 8 for Figure 3 A partial enlarged view of the M in the middle;

[0042] Fig. 9 for Figure 3 A partial enlarged view of N in the middle;

[0043] Fig.10 for Figure 3 A partial enlarged view of O in the middle;

[0044] Fig.11 for Figure 3 A partial enlarged view of P in the middle;

[0045] Fig.12 A cross-sectional view of a door and window punching device provided in an embodiment of the present invention;

[0046] Fig.13 A cross-sectional view of a punching assembly located at a fourth position provided by an embodiment of the present invention;

[0047] Fig.14 A cross-sectional view of a punching assembly located at a third position provided by an embodiment of the present invention;

[0048] Fig.15 for Fig.13 A partial enlarged view of the part A in the middle;

[0049] Fig.16 for Fig.13 A partial enlarged view of B in the middle;

[0050] Fig.17 for Fig.13 A partial enlarged view of the C in the middle;

[0051] Fig.18 for Fig.13 A partial enlarged view of D in the middle;

[0052] Fig.19 for Fig.14 A partial enlarged view of E in the middle;

[0053] Fig. 20 for Fig.14 A partial enlarged view of F in the middle;

[0054] Fig.21 for Fig.14 A partial enlarged view of the G in the middle;

[0055] Fig. 22 for Fig.14 A partial enlarged view of the H in the middle;

[0056] Fig.23 It is a schematic diagram of a door and window frame in the prior art.

[0057] In the figure:

[0058] 1000-door and window punching device; 100-lower die mechanism; 10-first shell; 11-low-pressure chamber; 12-high-pressure chamber; 20-first body; 201-first cavity; 202-second cavity; 203-first through hole; 204-second through hole; 205-third through hole; 206-fourth through hole; 30-first elastic member; 40-punching assembly; 41-first cylinder; 411-third cavity; 412-fourth cavity; 413-first flow channel; 414-second flow channel; 415-third flow channel; 416-fourth flow channel; 42-punching rod; 43-third elastic member; 50-second elastic member; 60-bending member; 200-upper die mechanism; 210-stamping Part; 2101-stamping part; 2102-connecting rod; 211-second stamping hole; 220-second shell; 221-fifth cavity; 222-sixth cavity; 230-partition; 240-second body; 241-fifth through hole; 242-sixth through hole; 243-seventh through hole; 244-eighth through hole; 245-sandwich gap; 246-liquid gap; 250-stamping assembly; 251-second cylinder body; 2511-seventh cavity; 2512-eighth cavity; 2513-fifth flow channel; 2514-sixth flow channel; 2515-seventh flow channel; 2516-eighth flow channel; 252-stamping rod; 260-fourth elastic member; 300-door and window frame. DETAILED DESCRIPTION

[0059] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0060] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0061] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0062] In the description of this application, it should be noted that, unless otherwise clearly specified and 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; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] Stamping is a metal processing process that uses dies and presses to apply pressure to metal sheets to cause them to undergo plastic deformation or separation, thereby obtaining parts of the desired shape and size. Stamping technology is widely used in industries such as automobiles, home appliances, electronics, and construction.

[0064] Reference Fig.23 In order to facilitate installation during the manufacturing process of doors and windows, the door and window frame 300 needs to be punched. However, in the prior art, the door and window punching device 1000 generally completes the punching and punching of the door and window frame 300 in sequence, that is, the punching and punching require different molds for processing. Therefore, multiple punching machines are required, or the molds need to be replaced during the processing. As a result, the door and window molding process requires multiple positioning, thereby reducing the processing accuracy of the door and window.

[0065] In order to solve the above technical problems, refer to Figure 1-Figure 11The embodiment of the present application provides a door and window punching device 1000, comprising a lower die mechanism 100 and an upper die mechanism 200. The lower die mechanism 100 has a punching groove; the upper die mechanism 200 is used to apply external force to the plate so that the plate fits with the punching groove, and the lower die mechanism 100 includes a punching assembly 40, which is configured to protrude from the bottom wall of the punching groove when the plate fits with the punching groove; wherein the upper die mechanism 200 includes a second shell 220, a partition plate 230, a hydraulic pump (not shown in the figure), a punching part 210, a second body 240, a punching assembly 250, and a fourth elastic member 260. The partition 230 is movably arranged in the second shell 220 to divide the second shell 220 into a fifth cavity 221 and a sixth cavity 222; the hydraulic pump is used to adjust the pressure of the fifth cavity 221 and the sixth cavity 222; one end of the stamping part 210 is connected to the partition 230, and the other end passes through the sixth cavity 222 and is located outside the second shell 220. The stamping part 210 is provided with a second stamping hole 211 adapted to the punching assembly 40; the second body 240 is arranged on the partition 230; one end of the stamping assembly 250 is located in the second body 240, and the other end passes through the sixth cavity 222 and is located outside the second shell 220. One end passes through the sixth cavity 222 and is located outside the second shell 220. The stamping assembly 250 has a fifth position and a sixth position. In the fifth position, the side of the stamping part 210 facing the lower mold mechanism 100 protrudes from the other end of the stamping assembly 250. In the sixth position and when the length of the stamping assembly 250 outside the second shell 220 is the longest, the other end of the stamping assembly 250 is flush with the side of the stamping part 210 facing the lower mold mechanism 100; the fourth elastic member 260 is used to provide elastic force to the stamping assembly 250 so that the stamping assembly 250 is located in the sixth position.

[0066] It can be understood that the lower mold mechanism 100 and the upper mold mechanism 200 can be assembled on a frame.

[0067] Exemplarily, the elastic members mentioned in this application are all springs.

[0068] The fourth elastic member 260 is disposed in the second body 240 , and opposite ends of the fourth elastic member 260 abut against the inner wall of the second body 240 and the stamping assembly 250 respectively.

[0069] In some embodiments, the stamping part 210 includes a stamping portion 2101 and a connecting rod 2102, the stamping portion 2101 is used to stamp the plate, the second stamping hole 211 is arranged in the stamping portion 2101, one end of the connecting rod 2102 is connected to the stamping portion 2101, and the other end passes through the second shell 220 and is connected to the partition 230.

[0070] Please refer to Figure 1-Figure 3The fifth position and the sixth position are the positions of the stamping assembly 250 relative to the second body 240. The stamping assembly 250 moves relative to the second body 240 along the N1 direction to transform from the fifth position to the sixth position. The stamping assembly 250 moves relative to the second body 240 along the N2 direction to transform from the sixth position to the fifth position.

[0071] Specifically, when not in operation, the fourth elastic member 260 drives the stamping assembly 250 to be located at the sixth position, at which time the other end of the stamping assembly 250 is flush with the side of the stamping member 210 facing the lower die mechanism 100 .

[0072] During the stamping process, the hydraulic pump drives and adjusts the pressure in the fifth cavity 221 and the sixth cavity 222 so that the pressure in the fifth cavity 221 is greater than the pressure in the sixth cavity 222, so that the partition 230 drives the stamping part 210 and the second body 240 to move toward the lower die mechanism 100, so that the second body 240 drives the stamping assembly 250 to move toward the lower die mechanism 100. External force is applied to the plate so that the plate fits the stamping groove, and then the punching assembly 40 protrudes from the bottom wall of the stamping groove, and the stamping assembly 250 compresses the fourth elastic member 260 to move to the fifth position, so that the side of the stamping part 210 facing the lower die mechanism 100 protrudes from the other end of the stamping assembly 250, and then the punching assembly 40 cooperates with the second punching hole 211 to punch the plate. And the plate cut off due to punching can be completely separated from the door and window frame 300.

[0073] Subsequently, the hydraulic pump drives and adjusts the pressure in the fifth cavity 221 and the sixth cavity 222 so that the pressure in the sixth cavity 222 is greater than the pressure in the fifth cavity 221, so that the partition 230 drives the stamping part 210 and the second body 240 to move away from the lower mold mechanism 100, so that the stamping assembly 250 no longer abuts against the punching assembly 40, and then the fourth elastic part 260 drives the stamping assembly 250 to be located in the sixth position.

[0074] In the present technical solution, the door and window punching device can complete the stamping and punching of the door and window frame 300 in the same process, so that the door and window processing accuracy is higher.

[0075] According to some embodiments of the present application, the stamping assembly 250 includes a second cylinder 251 and a stamping rod 252. The second cylinder 251 is disposed in the second body 240, and the fourth elastic member 260 abuts against the second cylinder 251; one end of the stamping rod 252 is disposed in the second cylinder 251 to separate the interior of the second cylinder 251 into a seventh cavity 2511 and an eighth cavity 2512, and the other end of the stamping rod 252 sequentially passes through the eighth cavity 2512 and the sixth cavity 222 and is located outside the second housing 220. When the second cylinder 251 is located in the fifth position, the seventh cavity 2511 is communicated with the sixth cavity 222, and the eighth cavity 2512 is communicated with the fifth cavity; when the second cylinder 251 is located in the sixth position, the seventh cavity 2511 is communicated with the fifth cavity 221, and the eighth cavity 2512 is communicated with the sixth cavity 222.

[0076] Specifically, when not working, the fourth elastic member 260 drives the stamping assembly 250 to be located at the sixth position. At this time, the seventh cavity 2511 is connected to the fifth cavity 221 , and the eighth cavity 2512 is connected to the sixth cavity 222 .

[0077] During the stamping process, the hydraulic pump drives and adjusts the pressure in the fifth cavity 221 and the sixth cavity 222 so that the pressure in the fifth cavity 221 is greater than the pressure in the sixth cavity 222, so that the partition 230 drives the stamping part 210 and the second body 240 to move toward the lower die mechanism 100, so that the second body 240 drives the stamping assembly 250 to move toward the lower die mechanism 100. At this time, the pressure in the seventh cavity 2511 is greater than the pressure in the eighth cavity 2512, so that the stamping rod 252 moves in the direction of compressing the eighth cavity 2512 so that the length of the stamping rod 252 outside is the largest, so that the end of the stamping rod 252 outside the second housing 220 is flush with the side of the stamping part 210 facing the lower die mechanism 100. Then the punching assembly 40 protrudes from the bottom wall of the stamping groove and abuts against the stamping rod 252, and at this time, the second cylinder 251 is driven to move to the fifth position through the stamping rod 252. In the fifth position, the seventh cavity 2511 is connected with the sixth cavity 222, and the eighth cavity 2512 is connected with the fifth cavity 221; thereby, the pressure of the seventh cavity 2511 is less than the pressure of the eighth cavity 2512, so that the punching rod 252 moves in the direction of compressing the seventh cavity 2511, thereby continuing to move away from the punching assembly 40. At this time, due to the elastic recovery of the fourth elastic member 260, the second cylinder 251 is separated from the sixth position to separate the seventh cavity 2511 from the sixth cavity 222, and to separate the eighth cavity 2512 from the fifth cavity 221, so that the punching rod 252 no longer moves.

[0078] Subsequently, the hydraulic pump drives and adjusts the pressure in the fifth cavity 221 and the sixth cavity 222 so that the pressure in the sixth cavity 222 is greater than the pressure in the fifth cavity 221, so that the partition 230 drives the stamping part 210 and the second body 240 to move away from the lower die mechanism 100, thereby making the stamping rod 252 away from the punching assembly 40, and then making the stamping assembly 250 further move to the sixth position driven by the fourth elastic member 260, until the stamping assembly 250 moves to the sixth position, because the stamping rod 252 itself moves a distance away from the punching assembly 40, so that the stamping part 210 faces the punching assembly 40 One side protrudes from the other end of the punching rod 252, so as to facilitate accommodating the punched sheet material, so that the punching member 210 drives the punched sheet material to leave the door and window frame 300. When the second cylinder 251 is driven by the fourth elastic member 260 to return to the sixth position, the seventh cavity 2511 is communicated with the fifth cavity 221, and the eighth cavity 2512 is communicated with the sixth cavity 222, so that the pressure of the seventh cavity 2511 is less than the pressure of the eighth cavity 2512, so that the punching rod 252 moves in the direction of compressing the seventh cavity 2511, so that the punching rod 252 continues to move in the direction away from the punching assembly 40, so as not to touch the punched sheet material. The punched sheet material is accommodated in the second punching hole 211.

[0079] Before the next punching preparation, the punching rod 252 moves in the direction of compressing the eighth cavity 2512 so that the length of the punching rod 252 outside is the largest, so that the end of the punching rod 252 outside the second housing 220 is flush with the side of the punching part 210 facing the lower die mechanism 100, so that the punched plate is discharged from the second punching hole 211, so as to facilitate the collection of the punched plate.

[0080] According to some embodiments of the present application, the second cylinder 251 has a fifth flow channel 2513 and a sixth flow channel 2514 communicating with the seventh cavity 2511, and a seventh flow channel 2515 and an eighth flow channel 2516 communicating with the eighth cavity 2512. The second body 240 has a fifth through hole 241 and an eighth through hole 244 communicating with the fifth cavity 221 and the interior of the second body 240, and has a sixth through hole 242 and a seventh through hole 243 communicating with the interior of the sixth cavity 222 and the second body 240. When the second cylinder 251 is in the fifth position, the sixth flow channel 2514 is communicated with the sixth through hole 242, and the eighth flow channel 2516 is communicated with the eighth through hole 244; when the second cylinder 251 is in the sixth position, the fifth flow channel 2513 is communicated with the fifth through hole 241, and the seventh flow channel 2515 is communicated with the seventh through hole 243.

[0081] It can be understood that when the second cylinder body 251 is in the fifth position, the cylinder wall of the second cylinder body 251 blocks the fifth through hole 241 and the seventh through hole 243 , and when the second cylinder body 251 is in the sixth position, the cylinder wall of the second cylinder body 251 blocks the sixth through hole 242 and the eighth through hole 244 .

[0082] In some embodiments, there is a liquid gap 246 between the outer periphery of the second body 240 and the inner periphery of the second shell 220, the liquid gap 246 is connected to the sixth cavity 222, the sixth through hole 242 and the seventh through hole 243 are through holes connecting the interior of the second body 240 and the liquid gap 246, there is an interlayer gap 245 in the wall of the second body 240, one end of the interlayer gap 245 passes through the partition 230 to be connected to the fifth cavity 221, and the fifth through hole 241 and the eighth through hole 244 are connected to the interlayer gap 245.

[0083] In the technical solution, the structure of connecting each cavity by means of flow channels and through holes is simple and easy to implement.

[0084] According to some embodiments of this application, please refer to Figure 12-Figure 22 The lower mold mechanism 100 includes a first shell 10, a first body 20, a first elastic member 30, a punching assembly 40, and a second elastic member 50; the first shell 10 has a high-pressure chamber 12 and a low-pressure chamber 11; the first body 20 is movably arranged in the first shell 10, and the first body 20 has a first position and a second position. In the first position, the high-pressure chamber 12 and the low-pressure chamber 11 are connected. In the second position, the first body 20 separates the high-pressure chamber 12 and the low-pressure chamber 11 and compresses the volume of the high-pressure chamber 12; the first elastic member 30 is used to provide elastic force to the first body 20 so that the first body 20 is located in the first position. In the process of the upper mold mechanism 200 applying external force to the plate, the first body 20 moves to the second position ; One end of the punching assembly 40 is located in the first body 20 to divide the interior of the first body 20 into a first cavity 201 and a second cavity 202, the second cavity 202 is connected to the high-pressure cavity 12, and the first cavity 201 is connected to the low-pressure cavity 11, the punching assembly 40 has a third position and a fourth position, when the first body 20 is in the first position and the punching assembly 40 is in the fourth position, the other end of the punching assembly 40 is flush with the bottom wall of the punching groove, when the first body 20 is in the second position and the punching assembly 40 is in the third position, the other end of the punching assembly 40 protrudes from the bottom wall of the punching groove; the second elastic member 50 is used to provide elastic force to the punching assembly 40 so that the punching assembly 40 is in the fourth position.

[0085] The first elastic member 30 is disposed in the first shell 10 , and opposite ends of the first elastic member 30 abut against the outer wall of the first body 20 and the inner wall of the first shell 10 respectively.

[0086] The second elastic member 50 is disposed in the first cavity 201 , and opposite ends of the second elastic member 50 are respectively in contact with the inner wall of the first body 20 and the outer wall of the punching assembly 40 .

[0087] The upper die mechanism can be a hydraulic press that drives the stamping parts to move.

[0088] Please refer to Figure 2 The first position and the second position are positions of the first body 20 relative to the first shell 10, the first body 20 moves relative to the first shell 10 along the N1 direction to be converted from the first position to the second position, and the first body 20 moves relative to the first shell 10 along the N2 direction to be converted from the second position to the first position; the third position and the fourth position are positions of the punching assembly 40 relative to the first body 20, the punching assembly 40 moves relative to the first body 20 along the N1 direction to be converted from the third position to the fourth position, and the punching assembly 40 moves relative to the first body 20 along the N2 direction to be converted from the fourth position to the third position.

[0089] The low-pressure chamber 11 is located on one side of the first body 20 that is perpendicular to the moving direction of the first body 20 , so that the low-pressure chamber 11 is not squeezed when the first body 20 moves along the N1 direction and the N2 direction.

[0090] In some embodiments, a baffle is provided in the first shell 10, and the baffle extends in a direction perpendicular to the movement direction of the first body 20 to separate the interior of the first shell 10 into a low-pressure chamber 11 and a high-pressure chamber 12, and the low-pressure chamber 11 and the high-pressure chamber 12 are connected through an opening. The first body 20 moves along the N1 direction to block the above-mentioned opening to isolate the low-pressure chamber 11 and the high-pressure chamber 12.

[0091] It is understandable that a limiting structure may be provided in the first body 20 to limit the punching assembly 40 from moving in a limited position. The limiting structure may be a stopper connected to the inner wall of the first body 20.

[0092] It can be understood that hydraulic oil or air can be contained in the first housing 10 .

[0093] Specifically, when not working, due to the force of the first elastic member 30, the first body 20 is in the first position, at which time the high-pressure chamber 12 and the low-pressure chamber 11 are connected to each other, so that the pressures of the first cavity 201 and the second cavity 202 are the same, and the punching assembly 40 is located in the fourth position under the action of the second elastic member 50, and the bottom wall of the punching groove is flush with the punching assembly 40.

[0094] During the stamping process, the plate is first placed between the lower mold mechanism 100 and the upper mold mechanism 200, and then pressure is applied to the plate through the upper mold mechanism 200 so that the plate is pressed into the stamping groove, so that the plate is stamped and formed. At this time, the first body 20 is driven to move to the second position along the N1 direction, thereby separating the low-pressure chamber 11 from the high-pressure chamber 12, and compressing the volume of the high-pressure chamber 12 so that the pressure in the high-pressure chamber 12 gradually increases, so that the pressure of the second cavity 202 gradually increases, so that the punching assembly 40 moves to the third position along the N2 direction to overcome the preload force of the second elastic member 50, so that the other end of the punching assembly 40 protrudes from the bottom wall of the stamping groove to stamp the door and window frame 300.

[0095] In the present technical solution, the door and window punching device 1000 can complete the stamping and punching of the door and window frame 300 in the same process, so that the door and window processing accuracy is higher.

[0096] According to some embodiments of the present application, the punching assembly 40 includes a first cylinder body 41 and a punching rod 42; the first cylinder body 41 is arranged in the first body 20 to divide the interior of the first body 20 into a second cavity 202 and a first cavity 201, and the second elastic member 50 abuts against the first cylinder body 41; one end of the punching rod 42 is arranged in the first cylinder body 41 to divide the interior of the first cylinder body 41 into a third cavity 411 and a fourth cavity 412, the first body 20 has a first punching hole connecting the punching groove and the first cavity 201, the other end of the punching rod 42 passes through the third cavity 411 and the first cavity 201 in sequence and is located in the first punching hole, when the first cylinder body 41 is in the fourth position, the third cavity 411 is connected to the high-pressure cavity 12, and the fourth cavity 412 is connected to the low-pressure cavity 11; when the first cylinder body 41 is in the third position, the fourth cavity 412 is connected to the high-pressure cavity 12, and the third cavity 411 is connected to the low-pressure cavity 11.

[0097] It is understandable that a limiting structure may be provided in the first cylinder body 41 to limit the punching rod 42 from moving in a limited position. The limiting structure may be a stopper connected to the inner wall of the first cylinder body 41 .

[0098] Specifically, when not in operation, the first body 20 is located at the first position, and the punching assembly 40 is located at the fourth position under the action of the second elastic member 50, at which time the third cavity 411 is connected to the high-pressure cavity 12, and the fourth cavity 412 is connected to the low-pressure cavity 11. However, since the high-pressure cavity 12 and the low-pressure cavity 11 are not isolated at this time, the pressures are the same, and the punching rod 42 does not move.

[0099] During the stamping process, the first body 20 is located in the second position and the punching assembly 40 is located in the third position. At this time, the fourth cavity 412 is connected to the high-pressure cavity 12, and the third cavity 411 is connected to the low-pressure cavity 11, thereby pushing one end of the stamping rod to squeeze the third cavity 411 along the N2 direction, so that the stamping rod can stamp the plate.

[0100] In the present technical solution, the punching rod is designed so that the punching assembly can further move toward the bottom wall of the protruding punching groove, thereby facilitating the punching of the plate.

[0101] According to some embodiments of the present application, the punching assembly 40 also includes a third elastic member 43, which is used to provide elastic force to the punching rod 42 to drive the punching rod 42 to compress the third cavity 411. During the movement of the first cylinder 41 from the fourth position to the third position, the third cavity 411 is connected to the high-pressure cavity 12, and the fourth cavity 412 is connected to the low-pressure cavity 11.

[0102] The third elastic member 43 is disposed in the fourth cavity 412 , and opposite ends of the third elastic member 43 abut against the punching rod 42 and the inner wall of the fourth cavity 412 , respectively.

[0103] Specifically, when not in operation, the first body 20 is located at the first position, and the punching assembly 40 is located at the fourth position under the action of the second elastic member 50. At this time, the third cavity 411 is connected to the high-pressure cavity 12, and the fourth cavity 412 is connected to the low-pressure cavity 11. However, since the high-pressure cavity 12 and the low-pressure cavity 11 are not isolated at this time, the pressures are the same, so that the third elastic member 43 can drive the punching rod to drive the punching rod 42 to compress the third cavity 411. At this time, the length of the punching rod outside the first cylinder 41 is the largest, and the punching rod is flush with the bottom wall of the punching groove.

[0104] By adjusting the elastic coefficients and preload of the second elastic member 50 and the third elastic member 43, during the stamping process, the first body 20 moves toward the second position along the N1 direction, and drives the first cylinder 41 to move through the second elastic member 50 to separate the high-pressure chamber 12 and the low-pressure chamber 11, and compress the high-pressure chamber 12, thereby increasing the pressure in the second chamber 202. When the pressure difference between the second chamber 202 and the first chamber 201 is less than the preload of the second elastic member 50, the first cylinder 41 is stationary relative to the first body 20 and is still in the third position, and at this time, the difference between the pressure of the third chamber 411 and the pressure of the fourth chamber 412 is less than the elastic force of the third elastic member 43, thereby making the stamping rod stationary relative to the first cylinder 41, that is, during this period, the first body 20, the first cylinder 41 and the stamping rod move together. Then, when the pressure difference between the pressure in the second cavity 202 and the pressure in the first cavity 201 is greater than the preload force of the second elastic member 50, the first cylinder 41 moves from the fourth position to the third position relative to the first body 20 along the N2 direction, at which time the third cavity 411 is connected to the high-pressure cavity 12, and the fourth cavity 412 is connected to the low-pressure cavity 11, that is, as the first body 20 continuously compresses the high-pressure cavity 12, the pressure difference between the third cavity 411 and the fourth cavity 412 gradually increases, thereby causing the punching rod to overcome the elastic force of the third elastic member 43 and move in the N1 direction, so that when the first cylinder 41 moves relative to the first body 20, the punching rod can be stationary relative to the first body 20 to block the first punching hole and ensure the punching surface quality near the first punching hole during punching. The punching of the sheet is completed during this period. Then the first cylinder 41 moves completely to the third position, the fourth cavity 412 is connected to the high-pressure cavity 12, and the third cavity 411 is connected to the low-pressure cavity 11. At this time, the difference between the pressure of the fourth cavity 412 and the pressure of the third cavity 411 and the elastic force of the third elastic member 43 act together on the punching rod 42, so that the punching rod 42 can move along the N2 direction, quickly compress the third cavity 411, and punch the plate.

[0105] In the present technical solution, the punching rod 42 can be stationary relative to the first body 20 when the first cylinder 41 moves to the third position, thereby improving the stamping surface quality near the first stamping hole during stamping.

[0106] According to some embodiments of the present application, the first cylinder body 41 has a first flow channel 413 and a second flow channel 414 connected to the fourth cavity 412, and a third flow channel 415 and a fourth flow channel 416 connected to the third cavity 411, and the first body 20 has a first through hole 203 and a fourth through hole 206 connected to the low-pressure chamber 11 and the interior of the first body 20, and has a second through hole 204 and a third through hole 205 connected to the high-pressure chamber 12 and the interior of the first body 20. When the first cylinder body 41 is in the third position, the second flow channel 414 is connected to the second through hole 204, and the fourth flow channel 416 is connected to the fourth through hole 206; when the first cylinder body 41 is in the fourth position, the first flow channel 413 is connected to the first through hole 203, and the third flow channel 415 is connected to the third through hole 205.

[0107] It can be understood that when the first cylinder body 41 is in the third position, the cylinder wall of the first cylinder body 41 blocks the first through hole 203 and the third through hole 205 , and when the first cylinder body 41 is in the fourth position, the cylinder wall of the first cylinder body 41 blocks the second through hole 204 and the fourth through hole 206 .

[0108] In the technical solution, the structure of connecting each cavity by means of flow channels and through holes is simple and easy to implement.

[0109] According to some embodiments of the present application, the first through hole 203 is a bar-shaped hole, and the extension direction of the first through hole 203 is parallel to the movement direction of the first cylinder body 41; the third through hole 205 is a bar-shaped hole, and the extension direction of the third through hole 205 is parallel to the movement direction of the first cylinder body 41.

[0110] In this technical solution, the strip holes are used to connect the third cavity 411 with the high-pressure cavity 12 and the fourth cavity 412 with the low-pressure cavity 11 during the movement of the first cylinder 41 from the fourth position to the third position. The structure is simple and easy to implement.

[0111] According to some embodiments of the present application, the upper die mechanism 200 has a second punching hole 211 corresponding to the first punching hole, and the second punching hole 211 cooperates with the punching rod 42 to punch a hole in the plate.

[0112] In the present technical solution, the second punching hole 211 cooperates with the punching rod 42 to punch holes in the plate, thereby ensuring the neatness of the punching edges.

[0113] According to some embodiments of the present application, the lower mold mechanism 100 also includes two bending parts 60, which are rotatably arranged on the outer surface of the first shell body 10. When the first body 20 moves toward the second position, it abuts against one end of the two bending parts 60 respectively to drive the other ends of the two bending parts 60 to rotate along the W direction toward each other to form a stamping groove.

[0114] Specifically, the first body 20 moves along the N1 direction to abut against the bending member 60 to drive the other end of the bending member 60 to move along the W direction, thereby forming the stamping groove.

[0115] In the present technical solution, during the process of the first body 20 moving toward the second position, it abuts against one end of the two bending parts 60 respectively, so as to drive the other ends of the two bending parts 60 to rotate toward each other to form a stamping groove. After the stamping is completed, when the first elastic part 30 drives the first body 20 to reset, it is convenient for the operator to open the stamping groove and remove the door and window frame 300.

[0116] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0117] The above embodiments are only used to illustrate the technical solution of the present application and are not used to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A door and window punching device, characterized in that: include: A lower die mechanism having a punching slot; The upper die mechanism is used to apply external force to the plate so that the plate fits the punching groove, and the lower die mechanism includes a punching assembly, and the punching assembly is configured to protrude from the bottom wall of the punching groove when the plate fits the punching groove; Wherein, the upper mold mechanism comprises: a second shell; a partition plate movably disposed in the second shell to separate the second shell into a fifth cavity and a sixth cavity; A hydraulic pump, used to adjust the pressure of the fifth cavity and the sixth cavity; A stamping part, one end of which is connected to the partition, and the other end of which passes through the sixth cavity and is located outside the second shell, and the stamping part is provided with a second stamping hole adapted to the punching assembly; A second body, disposed on the partition; A stamping assembly, one end of which is located in the second body, and the other end of which passes through the sixth cavity and is located outside the second shell, the stamping assembly has a fifth position and a sixth position, in which the side of the stamping part facing the lower die mechanism protrudes from the other end of the stamping assembly in the fifth position, and in which the other end of the stamping assembly is flush with the side of the stamping part facing the lower die mechanism in the sixth position and when the length of the stamping assembly outside the second shell is the longest; a fourth elastic member, used for providing elastic force to the stamping assembly so that the stamping assembly is located at the sixth position; A second cylinder body is disposed in the second body, and the fourth elastic member abuts against the second cylinder body; A punching rod, one end of which is arranged in the second cylinder body to divide the interior of the second cylinder body into a seventh cavity and an eighth cavity, and the other end of the punching rod sequentially passes through the eighth cavity and the sixth cavity and is located outside the second shell body, when the second cylinder body is located in the fifth position, the seventh cavity is communicated with the sixth cavity, and the eighth cavity is communicated with the fifth cavity; when the second cylinder body is located in the sixth position, the seventh cavity is communicated with the fifth cavity, and the eighth cavity is communicated with the sixth cavity; when the second cylinder body is located in the sixth position, the seventh cavity is communicated with the fifth cavity, and the eighth cavity is communicated with the sixth cavity; During the stamping process, the hydraulic pump adjusts the pressures in the fifth cavity and the sixth cavity so that the pressure in the fifth cavity is greater than the pressure in the sixth cavity, so that the partition drives the stamping part and the second body to move toward the lower die mechanism, so that the second body drives the stamping assembly to move toward the lower die mechanism. At this time, the pressure in the seventh cavity is greater than the pressure in the eighth cavity, so that the stamping rod moves in the direction of compressing the eighth cavity so that the length of the stamping rod outside is maximized, so that the end of the stamping rod outside the second shell is flush with the side of the stamping part facing the lower die mechanism; then The punching assembly protrudes from the bottom wall of the punching groove and abuts against the punching rod, thereby driving the second cylinder body to move to the fifth position through the punching rod; when in the fifth position, the seventh cavity is connected to the sixth cavity, and the eighth cavity is connected to the fifth cavity; thereby, the pressure of the seventh cavity is less than the pressure of the eighth cavity, so that the punching rod moves in the direction of compressing the seventh cavity, thereby continuing to move away from the punching assembly. At this time, due to the elastic recovery of the fourth elastic member, the second cylinder body is separated from the sixth position to separate the seventh cavity from the sixth cavity, and separate the eighth cavity from the fifth cavity, so that the punching rod no longer moves.

2. A door and window punching device according to claim 1, characterized in that: The second cylinder body has a fifth flow channel and a sixth flow channel connected to the seventh cavity, and a seventh flow channel and an eighth flow channel connected to the eighth cavity. The second body has a fifth through hole and an eighth through hole connected to the fifth cavity and the interior of the second body, and has a sixth through hole and a seventh through hole connected to the sixth cavity and the interior of the second body. When the second cylinder body is in the fifth position, the sixth flow channel is connected to the sixth through hole, and the eighth flow channel is connected to the eighth through hole; when the second cylinder body is in the sixth position, the fifth flow channel is connected to the fifth through hole, and the seventh flow channel is connected to the seventh through hole.

3. A door and window punching device according to claim 1, characterized in that: The lower mold mechanism comprises: A first shell having a high-pressure chamber and a low-pressure chamber; A first body is movably disposed in the first shell, the first body having a first position and a second position, when in the first position, the high-pressure chamber is connected to the low-pressure chamber, and when in the second position, the first body separates the high-pressure chamber from the low-pressure chamber and compresses the volume of the high-pressure chamber; a first elastic member, used for providing an elastic force to the first body, so that the first body is located at a first position, and the first body moves toward the second position during the process in which the upper mold mechanism applies an external force to the plate; One end of the punching assembly is located in the first body to divide the interior of the first body into a first cavity and a second cavity, the second cavity is connected to the high-pressure cavity, and the first cavity is connected to the low-pressure cavity. The punching assembly has a third position and a fourth position. When the first body is located in the first position and the punching assembly is located in the fourth position, the other end of the punching assembly is flush with the bottom wall of the punching groove. When the first body is located in the second position and the punching assembly is located in the third position, the other end of the punching assembly protrudes from the bottom wall of the punching groove. The second elastic member is used to provide elastic force to the punching assembly so that the punching assembly is located at a fourth position.

4. A door and window punching device according to claim 3, characterized in that: The punching assembly comprises: A first cylinder body is disposed in the first body to divide the interior of the first body into the second cavity and the first cavity, and the second elastic member abuts against the first cylinder body; A punching rod, one end of which is arranged in the first cylinder body to divide the interior of the first cylinder body into a third cavity and a fourth cavity, the first body has a first punching hole connecting the punching groove and the first cavity, the other end of the punching rod passes through the third cavity and the first cavity in sequence and is located in the first punching hole, when the first cylinder body is located in the fourth position, the third cavity is connected to the high-pressure cavity, and the fourth cavity is connected to the low-pressure cavity; when the first cylinder body is located in the third position, the fourth cavity is connected to the high-pressure cavity, and the third cavity is connected to the low-pressure cavity.

5. A door and window punching device according to claim 4, characterized in that: The punching assembly also includes: The third elastic member is used to provide elastic force to the punching rod to drive the punching rod to compress the third cavity. When the first cylinder moves from the fourth position to the third position, the third cavity is connected with the high-pressure cavity, and the fourth cavity is connected with the low-pressure cavity.

6. A door and window punching device according to claim 5, characterized in that: The first cylinder body has a first flow channel and a second flow channel connected to the fourth cavity, and a third flow channel and a fourth flow channel connected to the third cavity, the first body has a first through hole and a fourth through hole connected to the low-pressure cavity and the interior of the first body, and has a second through hole and a third through hole connected to the high-pressure cavity and the interior of the first body, when the first cylinder body is in the third position, the second flow channel is connected to the second through hole, and the fourth flow channel is connected to the fourth through hole; when the first cylinder body is in the fourth position, the first flow channel is connected to the first through hole, and the third flow channel is connected to the third through hole.

7. A door and window punching device according to claim 3, characterized in that: The lower mold mechanism also includes: Two bending parts are rotatably arranged on the outer surface of the first shell. When the first body moves toward the second position, it abuts against one end of the two bending parts respectively to drive the other ends of the two bending parts to rotate in a direction close to each other to form the stamping groove.

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