Automatic punching device and method

Abstract

The invention belongs to the technical field of hanging bracket installation, and particularly relates to an automatic punching device and method.The automatic punching device comprises a frame, a moving mechanism is arranged on the frame, a lifting assembly is arranged on the moving mechanism, the lifting assembly drives a punching machine to ascend and descend, and a protection assembly is arranged on a drilling part of the punching machine; according to the automatic punching device and method, through the synergistic effect of an inner sleeve and an outer sleeve of a protection assembly and an elastic sealing ring, the inner sleeve ascends along with a lifting assembly to be attached to the top wall face before punching, in the punching process, a piston rod continuously compresses a reset spring, and gas in a sleeve rod and the piston rod is inflated into the elastic sealing ring through a gas pipe; and the dust is expanded and tightly attached to the wall surface to form a closed space, so that dust diffusion is blocked. Meanwhile, the dust in the closed space is limited in the protection assembly and is prevented from diffusing to the working environment, the situation that workers inhale the dust to cause respiratory diseases is prevented, and the dust is prevented from stimulating the eyes and the skin.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of suspension installation, in particular to an automatic punching device and method. BACKGROUND

[0002] In the installation engineering, water supply and drainage system, air conditioning water system, air conditioning wind system, etc. adopt support and hanger installation, which is connected with the building main body by a boom. In the process of installing the hanger, the top position of the hanger needs to be punched.

[0003] At present, the punching device in the prior art generally punches by manually holding a puncher. In the process of punching, waste and dust will be generated at the punching position. These dusts not only diffuse in the working environment, which are easy to cause respiratory diseases when inhaled by workers, but also adhere to the eyes and skin surface to cause irritation, which is harmful to health. In addition, the dusts accumulated on the ground and the surface of equipment need to be cleaned by additional manpower, which increases the construction cost. Moreover, fine particle dusts are easy to enter the gap of construction machinery, thereby accelerating the wear of parts. In view of this, an automatic punching device and method are proposed. SUMMARY

[0004] The main purpose of the present application is to provide an automatic punching device and method, which can solve the problems proposed in the background.

[0005] To achieve the above purpose, the automatic punching device and method proposed by the present application comprises a frame, a moving mechanism is arranged on the frame, a lifting assembly is arranged on the moving mechanism, the lifting assembly drives a puncher to lift, and a drilling part of the puncher is provided with a protection assembly. The protection assembly comprises an outer sleeve, an inner sleeve, a fixed block, a sleeve rod and a piston rod, the inner sleeve is sleeved by the outer sleeve, the fixed block is fixedly connected to the outer wall of the inner sleeve, the fixed block is fixed with the piston rod, the piston rod is piston-connected in the sleeve rod, the piston rod and the sleeve rod are elastically connected through a return spring, and the outer sleeve and the sleeve rod are fixedly installed on the drilling part mounting plate of the puncher.

[0006] Preferably, the protection assembly further comprises an inlaid sleeve, the inlaid sleeve is fixedly connected to the outer wall of the inner sleeve, an elastic sealing ring is inlaidly installed in the inlaid sleeve, and the inside of the elastic sealing ring is filled with gas.

[0007] Preferably, the sleeve rod and the piston rod are filled with gas, and the sleeve rod and the elastic sealing ring are communicated through an air pipe.

[0008] Preferably, the output end of the punch is fixedly connected with a drill rod, the outer wall of the drill rod is fixedly connected with a swivel, the outer wall of the swivel is fixedly connected with a scraper, the drilling part mounting plate of the punch is provided with a discharge port, the drilling part mounting plate of the punch is embeddedly installed with a discharge pipe, and the end of the discharge pipe away from the discharge port is detachably connected with a cover.

[0009] Preferably, the upper side of the swivel is obliquely arranged, and the middle part of the swivel is high, and the peripheral part of the swivel is low.

[0010] Preferably, the lifting assembly comprises a U-shaped frame, a lead screw, a moving seat, a guide rail one, a stepping motor and a mounting frame, the lead screw is rotationally connected to the inner surface of the U-shaped frame, the moving seat is threadedly connected with the lead screw, the moving seat is slidingly connected to the guide rail one, the output end of the stepping motor is fixedly connected with the lead screw, the mounting frame is fixedly connected with the moving seat, and the punch is fixedly installed on the mounting frame.

[0011] Preferably, the moving mechanism comprises a long plate, a through port, a guide rail two, a rack bar one, a sliding seat, a limit switch, a gear, a rack bar two and a guide rail three, the through port is formed in the long plate, the guide rail two and the rack bar one are fixedly connected to the frame, the limit switch is fixedly connected to the outer wall of the long plate, and the rack bar two and the guide rail three are fixedly connected to the long plate.

[0012] Preferably, the outer wall of the sliding seat is fixedly connected with a motor, the output shaft of the motor is fixedly connected with an electric telescopic rod, the telescopic end of the electric telescopic rod is fixedly connected with the gear, the outer wall of the sleeving part of the electric telescopic rod is fixedly connected with a limit block one, the outer wall of the telescopic part of the electric telescopic rod is fixedly connected with a limit block two, the upper side of the limit block two is fixedly connected with a round rod, the round rod penetrates through and slidingly connects with the limit block one.

[0013] Preferably, when the sliding seat abuts against the limit switch, the gear is located directly above the through port, and the gear is meshed with the rack bar one or the rack bar two through the telescopic end of the electric telescopic rod.

[0014] The present application provides a punching method of an automatic punching device, comprising the following steps: S1, the electric telescopic rod is started, the telescopic end of the electric telescopic rod is elongated, the gear is moved downward and meshed with the rack bar one, the motor is started again, the output shaft of the motor drives the electric telescopic rod to rotate, thereby driving the gear to rotate, the position of the long plate on the guide rail two is adjusted, the telescopic end of the electric telescopic rod is retracted again, the gear is raised and meshed with the rack bar two, the motor is started again, the sliding seat is adjusted to slide on the guide rail three, and the punching position is adjusted; S2, the stepper motor is started, the output shaft of the stepper motor rotates, drives the screw rod to rotate, and then drives the mobile seat to stably rise under the guiding action of the guide rail 1, drives the mounting frame and the punch to stably rise; S3, when the drill rod abuts against the installation top, the inner sleeve abuts against the installation top, the piston rod compresses the return spring, the piston rod extrudes the gas into the elastic sealing ring through the gas pipe, and the elastic sealing ring is expanded to strengthen the sealing; S4, the punch is started, the output end of the punch drives the drill rod to punch, and the dust and waste generated in the punching process fall into the inside of the outer sleeve and are collected, and at the same time, through the rotation of the drill rod, the rotating ring drives the scraper to rotate and sweeps the waste to the discharge port, and the waste is discharged to the discharge pipe; S5, after the punching is completed, the waste in the discharge pipe is discharged by opening the cover.

[0015] The application provides an automatic punching device and method. (1) The automatic punching device and method are used in cooperation with the inner and outer sleeves and the elastic sealing ring of the protection assembly, the inner sleeve is attached to the top wall surface along with the lifting assembly before punching, the piston rod continuously compresses the return spring during the punching process, the sleeve rod and the gas in the piston rod are filled into the elastic sealing ring through the gas pipe, so that the elastic sealing ring is expanded and tightly attached to the wall surface to form a closed space, dust diffusion is blocked, dust in the closed space is limited in the protection assembly, dust inhalation by workers is prevented, respiratory diseases are prevented, and dust stimulation of the eyes and the skin is avoided.

[0016] (2) The rotating ring on the drill rod is designed to be inclined, the scraper is rotated along with the drill rod, the waste generated in the punching process is guided to the discharge port along the inclined surface, and the waste is collected in the detachable structure through the discharge pipe, so that scattered dust does not need to be cleaned by additional manpower, construction cost is reduced, fine particle dust is prevented from entering the gap of the construction machinery, part wear is reduced, and the service life of the equipment is prolonged.

[0017] (3) The mobile mechanism is used in cooperation with the lifting assembly, the lifting assembly is driven by the stepper motor to stably lift the punch through the screw rod, hole position deviation and irregular hole diameter caused by manual holding of the punch are avoided, installation precision of the hanging bracket is ensured, a scaffold does not need to be built, a worker does not need to hold a tool at a high altitude, and safety hazards such as high-altitude falling and tool falling are avoided. DETAILED DESCRIPTION

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings described below only show some of the embodiments of the present application, and are not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0019] Figure 1 The overall structure of the present application is shown in the figure. Figure 2 The partial structure of the present application is shown in the figure. Figure 3 The protective assembly structure of the present application is shown in the figure. Figure 4 The puncher structure of the present application is shown in the figure. Figure 5 The moving mechanism structure of the present application is shown in the figure. Figure 6 The moving mechanism structure of the present application is shown in the figure. Figure 7 The gear and motor output shaft connection structure of the present application is shown in the figure.

[0020] Explanation of figure numbers: 1, frame; 2, moving mechanism; 3, lifting assembly; 4, puncher; 5, protective assembly; 21, long plate; 22, through hole; 23, guide rail two; 24, rack bar one; 25, sliding seat; 26, limit switch; 27, gear; 28, rack bar two; 29, guide rail three; 271, electric telescopic rod; 272, limit block one; 273, limit block two; 274, round rod; 31, U-shaped frame; 32, screw rod; 33, moving seat; 34, guide rail one; 35, stepping motor; 36, mounting frame; 41, drill rod; 42, rotating ring; 43, scraper; 44, discharge port; 45, discharge pipe; 46, cover; 51, outer sleeve; 52, inner sleeve; 53, fixed block; 54, sleeve rod; 55, inlay sleeve; 56, elastic sealing ring; 57, piston rod; 58, air pipe.

[0021] The implementation of the present application, functional features and advantages will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, and not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0023] Please refer to Figures 1-7 The application provides an automatic punching device and method, comprising a frame 1, characterized in that: a moving mechanism 2 is arranged on the frame 1, a lifting assembly 3 is arranged on the moving mechanism 2, the lifting assembly 3 drives a puncher 4 to lift, and a drilling part of the puncher 4 is provided with a protection assembly 5.

[0024] In the embodiment of the application, the protection assembly 5 comprises an outer sleeve 51, an inner sleeve 52, a fixed block 53, a sleeve rod 54 and a piston rod 57, the inner sleeve 52 is sleeved with the outer sleeve 51, the fixed block 53 is fixedly connected to the outer wall of the inner sleeve 52, the fixed block 53 is fixed with the piston rod 57, the piston rod 57 is piston-connected in the sleeve rod 54, the piston rod 57 is elastically connected with the sleeve rod 54 through a reset spring, the outer sleeve 51 and the sleeve rod 54 are fixedly installed on a drilling part mounting plate of the puncher 4, in the process of punching, the inner sleeve 52 abuts against the installation top, the piston rod 57 compresses the reset spring, and the waste generated in the punching process can be stably collected into the outer sleeve 51.

[0025] Further, the protection assembly 5 further comprises an inlaid sleeve 55, the inlaid sleeve 55 is fixedly connected to the outer wall of the inner sleeve 52, the inlaid sleeve 55 is inlaidly installed with an elastic sealing ring 56, the inside of the elastic sealing ring 56 is filled with gas, the sleeve rod 54 and the piston rod 57 are filled with gas, the sleeve rod 54 and the elastic sealing ring 56 are communicated through a gas pipe 58, in the process that the piston rod 57 compresses the reset spring, the piston rod 57 extrudes the gas to enter the elastic sealing ring 56 through the gas pipe 58, so that the elastic sealing ring 56 is inflated to strengthen the sealing and block the dust diffusion. At the same time, the dust in the closed space is limited in the protection assembly 5, avoiding diffusing to the working environment, preventing the workers from inhaling the dust to cause respiratory diseases, and avoiding the dust stimulating the eyes and the skin.

[0026] Further, the output end of the puncher 4 is fixedly connected with a drill rod 41, the outer wall of the drill rod 41 is fixedly connected with a rotating ring 42, the outer wall of the rotating ring 42 is fixedly connected with a scraping piece 43, the drilling part mounting plate of the puncher 4 is provided with a discharge port 44, the drilling part mounting plate of the puncher 4 is inlaidly installed with a discharge pipe 45, one end of the discharge pipe 45 away from the discharge port 44 is detachably connected with a cover 46, the upper side of the rotating ring 42 is obliquely arranged, the middle part of the rotating ring 42 is high, and the peripheral part of the rotating ring 42 is low, by starting the puncher 4, the output end of the puncher 4 drives the drill rod 41 to punch, at the same time, by rotating the drill rod 41, the rotating ring 42 drives the scraping piece 43 to rotate and sweep the waste to the discharge port 44, and the waste is discharged to the discharge pipe 45, after the punching is completed, the waste in the discharge pipe 45 is discharged by opening the cover 46, and without additional investment in manpower to clean the scattered dust, the construction cost is reduced. The concentrated collection mode avoids the fine particle dust into the gap of the construction machinery, reduces the wear of parts, and prolongs the service life of the equipment.

[0027] Further, the lifting assembly 3 comprises a U-shaped frame 31, a lead screw 32, a moving seat 33, a guide rail one 34, a stepping motor 35 and a mounting frame 36, the lead screw 32 is rotationally connected to the inner surface of the U-shaped frame 31, the moving seat 33 is threadedly connected with the lead screw 32, the moving seat 33 is slidingly connected to the guide rail one 34, the output end of the stepping motor 35 is fixed with the lead screw 32, the mounting frame 36 is fixed with the moving seat 33, the puncher 4 is fixedly installed on the mounting frame 36, the stepping motor 35 is started, the output shaft of the stepping motor 35 rotates to drive the lead screw 32 to rotate, and then the moving seat 33 can be stably lifted under the guidance of the guide rail one 34 to drive the mounting frame 36 and the puncher 4 to stably lift, thereby facilitating subsequent punching operation.

[0028] In the embodiment of the present application, the moving mechanism 2 comprises a long plate 21, a through hole 22, a guide rail two 23, a rack rod one 24, a sliding seat 25, a limit switch 26, a gear 27, a rack rod two 28 and a guide rail three 29, the through hole 22 is formed in the long plate 21, the guide rail two 23 and the rack rod one 24 are fixedly connected to the frame 1, the limit switch 26 is fixedly connected to the outer wall of the long plate 21, the rack rod two 28 and the guide rail three 29 are fixedly connected to the long plate 21, a motor is fixedly connected to the outer wall of the sliding seat 25, the output shaft of the motor is fixedly connected with an electric telescopic rod 271, the telescopic end of the electric telescopic rod 271 is fixedly connected with the gear 27, a limit block one 272 is fixedly connected to the outer wall of the sleeve joint part of the electric telescopic rod 271, a limit block two 273 is fixedly connected to the outer wall of the telescopic part of the electric telescopic rod 271, a round rod 274 is fixedly connected to the upper side of the limit block two 273, the round rod 274 penetrates through and slidingly connects with the limit block one 272, when the sliding seat 25 abuts against the limit switch 26, the gear 27 is located directly above the through hole 22, the telescopic end of the electric telescopic rod 271 can drive the gear 27 to engage with the rack rod one 24 or the rack rod two 28 through telescopic expansion, the telescopic end of the electric telescopic rod 271 is elongated by starting the electric telescopic rod 271, the gear 27 moves downward to engage with the rack rod one 24, the motor is started again, the output shaft of the motor drives the electric telescopic rod 271 to rotate, thereby driving the gear 27 to rotate, adjusting the position of the long plate 21 on the guide rail two 23, the telescopic end of the electric telescopic rod 271 is retracted again, the gear 27 rises to engage with the rack rod two 28, the motor is started again, adjusting the sliding of the sliding seat 25 on the guide rail three 29, adjusting the punching position, cooperating with the use of the lifting assembly 3, the problems of hole position deviation and irregular hole diameter caused by manual holding of the puncher 4 due to shaking can be avoided, the installation precision of the hanging bracket is ensured, a scaffold does not need to be built, and the staff does not need to hold tools high in the air, thereby avoiding the safety hazards of high-altitude falling and tool falling.

[0029] The present application provides a punching method of an automatic punching device, comprising the following steps: S1, start the electric telescopic rod 271, the telescopic end of the electric telescopic rod 271 is extended, the gear 27 is downwardly moved and is engaged with the rack bar 24, the motor is started again, the output shaft of the motor drives the electric telescopic rod 271 to rotate, and then drives the gear 27 to rotate, adjusts the position of the long plate 21 on the guide rail 23, the telescopic end of the electric telescopic rod 271 is retracted, the gear 27 is raised and is engaged with the rack bar 28, the motor is started again, the sliding seat 25 is adjusted to slide on the guide rail 29, and the punching position is adjusted; S2, start the stepping motor 35, the output shaft of the stepping motor 35 rotates, drives the screw rod 32 to rotate, and then drives the moving seat 33 to stably rise under the guidance of the guide rail 1, drives the mounting frame 36 and the puncher 4 to stably rise; S3, when the drill rod 41 abuts against the mounting top, the inner sleeve 52 abuts against the mounting top, the piston rod 57 compresses the return spring, the piston rod 57 extrudes the gas into the elastic sealing ring 56 through the gas pipe 58, and the elastic sealing ring 56 is expanded to strengthen the sealing; S4, start the puncher 4, the output end of the puncher 4 drives the drill rod 41 to punch, the dust and waste generated in the punching process fall into the inside of the outer sleeve 51 and are collected, at the same time, through the rotation of the drill rod 41, the rotating ring 42 drives the scraping piece 43 to rotate and sweep the waste to the discharge port 44, and the waste is discharged to the discharge pipe 45; S5, after the punching is completed, the waste in the discharge pipe 45 is discharged by opening the cover 46.

[0030] It should be noted that the above-mentioned electrical components are all products of the prior art, which are selected, installed and debugged by a person skilled in the art according to the needs of use, to ensure that each electrical component can work normally, and the components are all general standard components or components known to a person skilled in the art, the structure and principle of which can be known by a person skilled in the art through a technical manual or through a conventional experimental method, and are not limited here. The standard parts used in the present application can be purchased from the market, and the specific connection mode of each part is connected by using the conventional rivets, welding and other conventional means in the prior art, and the standard parts are of conventional types in the prior art, and the connection of the circuit adopts the conventional connection mode in the prior art.

[0031] The above-mentioned only for the preferred embodiments of the present application, not therefore limit the patent range of the present application, any equivalent structural transformation made under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. An automatic perforating device comprising a frame (1), characterized in that: The frame (1) is provided with a moving mechanism (2), the moving mechanism (2) is provided with a lifting assembly (3), the lifting assembly (3) drives a puncher (4) to lift, and the drilling part of the puncher (4) is provided with a protection assembly (5); The protection assembly (5) comprises an outer sleeve (51), an inner sleeve (52), a fixed block (53), a sleeve rod (54) and a piston rod (57), the inner sleeve (52) is sleeved with the outer sleeve (51), the fixed block (53) is fixedly connected to the outer wall of the inner sleeve (52), the fixed block (53) is fixed with the piston rod (57), the piston rod (57) is connected to the sleeve rod (54), the piston rod (57) is elastically connected with the sleeve rod (54) through a reset spring, and the outer sleeve (51) and the sleeve rod (54) are fixedly installed on the drilling part mounting plate of the puncher (4).

2. An automatic punching device according to claim 1, characterized in that: The protection assembly (5) further comprises an inlaid sleeve (55), the inlaid sleeve (55) is fixedly connected to the outer wall of the inner sleeve (52), the elastic sealing ring (56) is inlaidly installed in the inlaid sleeve (55), and the inside of the elastic sealing ring (56) is filled with gas.

3. An automatic punching device according to claim 2, characterized in that: The sleeve rod (54) and the piston rod (57) are filled with gas, and the sleeve rod (54) and the elastic sealing ring (56) are communicated through an air pipe (58).

4. An automatic punching device according to claim 3, characterized in that: The output end of the puncher (4) is fixedly connected with a drill rod (41), the outer wall of the drill rod (41) is fixedly connected with a rotating ring (42), the outer wall of the rotating ring (42) is fixedly connected with a scraping piece (43), the drilling part mounting plate of the puncher (4) is provided with a discharge port (44), the drilling part mounting plate of the puncher (4) is inlaidly installed with a discharge pipe (45), and one end, away from the discharge port (44), of the discharge pipe (45) is detachably connected with a cover (46).

5. An automatic perforating device according to claim 4, characterized in that: The upper side of the rotating ring (42) is inclined, the middle part of the rotating ring (42) is high, and the peripheral part of the rotating ring (42) is low.

6. An automatic punching device according to claim 5, characterized in that: The lifting assembly (3) comprises a U-shaped frame (31), a lead screw (32), a moving seat (33), a guide rail I (34), a stepping motor (35) and a mounting frame (36), the lead screw (32) is rotationally connected to the inner surface of the U-shaped frame (31), the moving seat (33) is threadedly connected with the lead screw (32), the moving seat (33) is slidably connected to the guide rail I (34), the output end of the stepping motor (35) is fixed with the lead screw (32), the mounting frame (36) is fixed with the moving seat (33), and the puncher (4) is fixedly installed on the mounting frame (36).

7. An automatic perforating device according to claim 6, characterized in that: The moving mechanism (2) comprises a long plate (21), an opening (22), a guide rail two (23), a rack rod one (24), a sliding seat (25), a limit switch (26), a gear (27), a rack rod two (28) and a guide rail three (29), the opening (22) is formed in the long plate (21), the guide rail two (23) and the rack rod one (24) are fixedly connected on the frame (1), the limit switch (26) is fixedly connected on the outer wall of the long plate (21), and the rack rod two (28) and the guide rail three (29) are fixedly connected on the long plate (21).

8. An automatic perforating device according to claim 7, characterized in that: The outer wall of the sliding seat (25) is fixedly connected with a motor, the output shaft of the motor is fixedly connected with an electric telescopic rod (271), the telescopic end of the electric telescopic rod (271) is fixedly connected with the gear (27), the outer wall of the sleeving part of the electric telescopic rod (271) is fixedly connected with a limit block one (272), the outer wall of the telescopic part of the electric telescopic rod (271) is fixedly connected with a limit block two (273), the upper side of the limit block two (273) is fixedly connected with a round rod (274), and the round rod (274) penetrates through and is in sliding connection with the limit block one (272).

9. An automatic perforating device according to claim 8, characterized in that: When the sliding seat (25) abuts against the limit switch (26), the gear (27) is located directly above the opening (22), and the gear (27) can be meshed with the rack rod one (24) or the rack rod two (28) through the telescopic end of the electric telescopic rod (271).

10. A punching method of an automatic punching apparatus based on any one of claims 1 to 9, characterized by, The method comprises the following steps: S1, the electric telescopic rod (271) is started, the telescopic end of the electric telescopic rod (271) is extended, the gear (27) is moved downwards and is meshed with the rack rod one (24), then the motor is started, the output shaft of the motor drives the electric telescopic rod (271) to rotate, thereby driving the gear (27) to rotate, the position of the long plate (21) on the guide rail two (23) is adjusted, then the telescopic end of the electric telescopic rod (271) is retracted, the gear (27) is lifted and is meshed with the rack rod two (28), then the motor is started, the sliding seat (25) is adjusted to slide on the guide rail three (29), and the punching position is adjusted; S2, the stepping motor (35) is started, the output shaft of the stepping motor (35) rotates, drives the screw rod (32) to rotate, thereby driving the guide rail one (34) to guide the moving seat (33) to stably rise, drives the mounting frame (36) and the punch (4) to stably rise; S3, when the drill rod (41) abuts against the mounting top, the inner sleeve (52) abuts against the mounting top, the piston rod (57) compresses the return spring, the piston rod (57) extrudes the gas to enter the elastic sealing ring (56) through the gas pipe (58), so that the elastic sealing ring (56) is inflated to strengthen the sealing; S4, the punch (4) is started, the output end of the punch (4) drives the drill rod (41) to punch, the dust and waste generated in the punching process falls into the inside of the outer sleeve (51) and is collected, meanwhile, through the rotation of the drill rod (41), the rotating ring (42) drives the scraper (43) to rotate and sweep the waste to the discharge port (44), and the waste is discharged to the discharge pipe (45). S5, after the punching is completed, the waste chip in the discharge pipe (45) is discharged by opening the cover (46).

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