Punching equipment for hardware fittings for building construction

Abstract

The invention relates to the field of punching facilities, in particular to punching equipment for hardware fittings for building construction, which comprises a punching table, three bearing seats are arranged above the punching table in a linear array manner, a top piece is mounted on the bearing seat at the rear part, and a rotating shaft is connected to the front end of the bearing seat at the front part; a rotating shaft is fixedly installed at the upper end of the bearing seat, polishing wheels are coaxially embedded in the two ends of the rotating shaft, a second L-shaped frame is fixedly installed at one end of the bearing seat, a first L-shaped frame is fixedly installed at the other end of the bearing seat, the first L-shaped frame and the second L-shaped frame are oppositely arranged, and a punching pushing part is installed on the front portion of the upper end of the punching table. According to the punching device, the punching quality is improved, meanwhile, the use convenience is guaranteed, normal work of the grinding wheel is guaranteed, meanwhile, the punching device can adapt to punching of workpieces with different lengths, and the use requirements are effectively met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of punching equipment, in particular to a building construction hardware punching equipment. BACKGROUND

[0002] The building construction hardware includes door and window hardware, plumbing hardware and structural fasteners, etc., some special-shaped hardware such as Z-shaped workpiece often needs to be punched on the edge during the processing process, so as to facilitate subsequent assembly, and when the workpiece is punched by using the punching equipment, the cross section edge of the punched workpiece has sharp protrusions, i.e. burrs, and the punching quality is poor. SUMMARY

[0003] The present application aims to solve the problems in the background art and provides a building construction hardware punching equipment.

[0004] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a building construction hardware punching equipment, comprising a punching table, three bearing seats are linearly arranged above the punching table, a top piece is installed on the rear bearing seat, a rotating shaft is connected to the front end of the front bearing seat, polishing wheels are coaxially embedded on both ends of the rotating shaft, a No. 2 L-shaped frame is fixedly installed at one end of the bearing seat, a No. 1 L-shaped frame is fixedly installed at the other end of the bearing seat, the No. 1 L-shaped frame and the No. 2 L-shaped frame are oppositely arranged, a punching pushing piece is installed at the upper end of the front part of the punching table, two limiting frames are linearly fixedly installed on the upper end of the punching table, and the two limiting frames are respectively aligned with the two bearing seats in the front part and the middle part.

[0005] Preferably, support frames are fixedly installed at the lower ends of the two bearing seats in the rear part and the middle part, the lower ends of the support frames are fixed to the punching table, through holes are formed in the No. 1 L-shaped frame and the No. 2 L-shaped frame on the bearing seat in the front part, a protruding frame is rotatably installed on the outer surface of the rotating shaft, the end of the protruding frame is fixed to the bearing seat in the front part, a servo motor is fixedly installed at the lower end of the protruding frame, transmission gears are coaxially embedded on the output end of the servo motor and the outer surface of the rotating shaft, and the two transmission gears are engaged.

[0006] Preferably, the top piece comprises an adjusting seat which is slidably installed in the rear bearing seat, a prism is slidably installed on the upper end of the adjusting seat, the lower end of the prism penetrates out from the lower end of the adjusting seat, a top seat is fixedly installed on the upper end of the prism, a threaded sleeve is inlaid in the lower end face of the rear bearing seat, a threaded column is screwed in the interior of the threaded sleeve, and the end of the threaded column is tightly pressed on the adjusting seat.

[0007] Preferably, the lower end of the prism is inlaid with a limiting cap, the limiting cap is fitted to the lower end of the adjusting seat, the outer side of the prism is wound with a supporting spring, the upper end of the supporting spring is fixed to the top seat, and the lower end of the supporting spring is fixed to the upper end of the adjusting seat.

[0008] Preferably, the punching pushing piece comprises four guide columns fixedly arranged in a square at the front of the upper end of the punching table, a bearing frame is fixedly arranged between the upper ends of the four guide columns, a hydraulic cylinder is fixedly arranged at the middle of the upper end of the bearing frame, the output end of the hydraulic cylinder penetrates out from the lower end of the bearing frame, the output end of the hydraulic cylinder is in sliding fit with the bearing frame, a lifting table is fixedly arranged at the output end of the hydraulic cylinder, the corners of the lifting table are fitted to the outer surface of the guide columns, and two punching heads are fixedly arranged at the lower end of the lifting table.

[0009] Preferably, a column sleeve is fixedly arranged at one side of the middle bearing seat, a guide column is inlaid in the inside of the column sleeve, the guide column extends out from the front end of the column sleeve, a sliding sleeve is fitted to the outer surface of the guide column, the side surface of the sliding sleeve is fixed to the front bearing seat, a return spring is wound at the outer side of the guide column, one end of the return spring is fixed to the column sleeve, the other end of the return spring is fixed to the rear end of the sliding sleeve, a limiting cap is inlaid at the front end of the guide column, and the limiting cap is fitted to the front end of the sliding sleeve.

[0010] Preferably, a guide plate is fixedly arranged at the rear end of the front bearing seat, a guide shell is fixedly arranged at the front end of the middle bearing seat, the guide plate is in sliding fit in the inside of the guide shell, a pull frame is fixedly arranged at the front edge of the lifting table, a toothed plate is in sliding fit at the end of the pull frame, a T-shaped frame is in sliding fit in the inside of the toothed plate, the T-shaped frame is fixed to the punching table, a pull cap is inlaid at the end of the pull frame, and the pull cap is fitted to the lower end of one side of the toothed plate.

[0011] Preferably, a turnover gear is engaged at the rear of the toothed plate, a connecting shaft is coaxially inlaid in the inside of the turnover gear, an axle seat is rotatably inlaid at the middle of the connecting shaft, the lower end of the axle seat is fixed to the punching table, a poking frame is fixedly arranged at the upper end edge of the connecting shaft, a pushing frame is rotatably arranged at the end of the poking frame, a pushing seat is rotatably arranged at the end of the pushing frame, and the pushing seat is fixed to the upper end of the sliding sleeve.

[0012] Compared with the prior art, the present application has the following beneficial effects: 1. The servo motor is arranged, the polishing wheel on the rotating shaft can be driven to rotate through the transmission gear, and the lower end surface of the workpiece is moved to remove the burr at the lower edge of the hole, reduce the occurrence of punching burr, improve the punching quality, and when the hydraulic cylinder drives the punching head to punch and moves up after completion, the pull frame slides upward, and after the pull cap and the tooth plate on the pull frame are attached, the hydraulic cylinder will continue to work and move up, at this time the pull frame continues to move up and drives the tooth plate to move up through the pull cap, and then drives the turnover gear to rotate, so that the pull frame can be turned over to drive the push frame to move the sliding sleeve, and then drives the front bearing seat to move backward, so that the No. 1 L-shaped frame and the No. 2 L-shaped frame on the front bearing seat can be separated from the lower part of the punching position of the workpiece, and the rotating polishing wheel moves backward to the punching position to remove the burr, which does not require additional operation of workers, thereby effectively ensuring the convenience.

[0013] 2. The top seat is arranged, the workpiece can be supported from the rear, so that the polishing wheel does not move during backward movement, thereby ensuring the normal work of the polishing wheel, and the loosening screw column can drive the adjusting seat to move, and then the adjusting seat is pulled to drive the top seat to move and adjust the position of the top seat, so as to adapt to different lengths of workpieces for punching, thereby meeting the use requirements. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the punching equipment for building construction hardware fittings of the application; Figure 2 It is a structural schematic view of the punching equipment for building construction hardware fittings of the application; Figure 1 It is an enlarged view of A in the application; Figure 3 It is a schematic view of the tooth plate of the punching equipment for building construction hardware fittings of the application; Figure 4 It is a schematic view of the bearing seat at the rear of the punching equipment for building construction hardware fittings of the application; Figure 5 It is an enlarged view of B in the application; Figure 4 Figure 6 It is a use view of the punching equipment for building construction hardware fittings of the application.

[0015] ​In the figure: 1, punching table; 2, guide column; 3, bearing frame; 4, hydraulic cylinder; 5, lifting table; 6, punching head; 7, extension frame; 8, limiting frame; 9, bearing seat; 10, reset spring; 11, guide column; 12, column sleeve; 13, sliding sleeve; 14, limiting cap; 15, push seat; 16, push frame; 17, toggle frame; 18, connecting shaft; 19, reversing gear; 20, shaft seat; 21, T-shaped frame; 22, toothed plate; 23, guide plate; 24, guide shell; 25, No. 1 L-shaped frame; 26, No. 2 L-shaped frame; 27, adjusting seat; 28, support frame; 29, prism; 30, top seat; 31, supporting spring; 32, limiting cap; 33, through hole; 34, threaded column; 35, threaded sleeve; 36, rotating shaft; 37, polishing wheel; 38, servo motor; 39, transmission gear; 40, pull frame; 41, pull cap; 42, workpiece. DETAILED DESCRIPTION

[0016] The following description is used to disclose the present application so that those skilled in the art can implement the present application. The preferred embodiments in the following description are only as examples, and other obvious modifications can be conceived by those skilled in the art.

[0017] As Figures 1-6 shown in a kind of building construction hardware punching equipment for fitting, including punching table 1, three bearing seats 9 are linearly arranged on the upper portion of punching table 1, bearing seat 9 plays the role of carrying No. 1 L-shaped frame 25 and No. 2 L-shaped frame 26, top piece is installed on the rear bearing seat 9, the front end of the front bearing seat 9 is connected with rotating shaft 36, rotating shaft 36 plays the role of carrying polishing wheel 37, both ends of rotating shaft 36 are coaxially embedded with polishing wheel 37, polishing wheel 37 plays the role of grinding and removing burr at the lower edge of hole, No. 2 L-shaped frame 26 is fixedly installed at one end of bearing seat 9, No. 1 L-shaped frame 25 is fixedly installed at the other end of bearing seat 9, No. 1 L-shaped frame 25 and No. 2 L-shaped frame 26 are oppositely arranged, can adapt to the Z shape of workpiece 42 and limit, stamping pusher is installed at the upper end of the front portion of punching table 1, two limiting frames 8 are linearly fixedly installed on the upper end of punching table 1, limiting frame 8 plays the role of limiting workpiece 42 on No. 1 L-shaped frame 25 and No. 2 L-shaped frame 26, two limiting frames 8 are respectively aligned with the two bearing seats 9 of front portion and middle portion, press down top seat 30, at this time supporting spring 31 is contracted and deformed, then workpiece 42 is pushed on No. 1 L-shaped frame 25 and No. 2 L-shaped frame 26 on bearing seat 9, at this time No. 2 L-shaped frame 26 and No. 1 L-shaped frame 25 are respectively fitted with the two corners of workpiece 42, limit workpiece 42, at the same time the lower end of limiting frame 8 and end portion are respectively fitted on the horizontal plane and vertical plane of workpiece 42, workpiece 42 is firmly limited on No. 1 L-shaped frame 25 and No. 2 L-shaped frame 26, then release top seat 30, make top seat 30 reset under the push of supporting spring 31, fit on the rear end surface of workpiece 42 and support workpiece 42.

[0018] Support frames 28 are fixedly installed at the lower ends of the two bearing seats 9 located at the rear and middle. The lower ends of the support frames 28 are fixed to the punching table 1. The support frames 28 serve to fix the bearing seats 9 at the rear and middle. Through holes 33 are opened on the front limiting frame 8 and the first L-shaped frame 25 and the second L-shaped frame 26 located on the front bearing seat 9. The through holes 33 serve to cooperate with the punching head 6 to punch holes. An extension frame 7 is rotatably installed on the outer surface of the rotating shaft 36. The end of the extension frame 7 is fixed to the front bearing seat 9. The extension frame 7 serves to connect the rotating shaft 36. A servo motor 38 is fixedly installed at the lower end of the extension frame 7. The servo motor 38 serves to drive the grinding wheel 37 to rotate. The output end of the servo motor 38 and the outer surface of the rotating shaft 36 are coaxially embedded with transmission gears 39. The transmission gears 39 serve to transmit power. The two transmission gears 39 mesh with each other.

[0019] The top component includes an adjusting seat 27 that is slidably installed inside the rear support seat 9. A prism 29 is slidably installed through the upper end of the adjusting seat 27. The adjusting seat 27 is used to adjust the position of the top seat 30. The lower end of the prism 29 extends through the lower end of the adjusting seat 27. The prism 29 is used to guide the top seat 30. The top seat 30 is fixedly installed at the upper end of the prism 29. A threaded sleeve 35 is inserted through the lower end face of the rear support seat 9. The threaded sleeve 35 is used to cooperate with the threaded post 34. The threaded post 34 is screwed through the inside of the threaded sleeve 35. The end of the threaded post 34 is pressed against the adjusting seat 27. The threaded post 34 is used to tighten and fix the adjusting seat 27.

[0020] A limiting cap 32 is inlaid at the lower end of the prism 29. The limiting cap 32 fits against the lower end of the adjusting seat 27. The limiting cap 32 serves to prevent the prism 29 and the adjusting seat 27 from separating. A support spring 31 is wound around the outside of the prism 29. The upper end of the support spring 31 is fixed to the top seat 30. The support spring 31 can support the top seat 30 and limit the workpiece 42. The lower end of the support spring 31 is fixed to the upper end of the adjusting seat 27.

[0021] The punch pushing piece includes four guide columns 2 fixedly arranged in square on the upper end front of the punching table 1, the guide columns 2 play a role of guiding the lifting table 5, the upper end portions of the four guide columns 2 are fixedly provided with a bearing frame 3, the bearing frame 3 plays a role of bearing the hydraulic cylinder 4, the upper end middle portion of the bearing frame 3 is fixedly provided with the hydraulic cylinder 4, the output end of the hydraulic cylinder 4 penetrates out from the lower end of the bearing frame 3, the output end of the hydraulic cylinder 4 is in sliding fit with the bearing frame 3, the output end of the hydraulic cylinder 4 is fixedly provided with the lifting table 5, the hydraulic cylinder 4 plays a role of driving the punching head 6 to move for punching, the corners of the lifting table 5 are attached to the outer surfaces of the guide columns 2, the lifting table 5 plays a role of bearing the punching head 6, the lower end middle portion of the lifting table 5 is fixedly provided with two punching heads 6.

[0022] One side of the middle bearing seat 9 is fixedly provided with a column sleeve 12, the inside of the column sleeve 12 is embedded with a guide column 11, the column sleeve 12 plays a role of bearing the guide column 11 and the reset spring 10, the guide column 11 extends out from the front end of the column sleeve 12, the outer surface of the guide column 11 is fixedly provided with a sliding sleeve 13, the side surface of the sliding sleeve 13 is fixed with the front bearing seat 9, the sliding sleeve 13 and the guide column 11 play a role of guiding the front bearing seat 9, the outer side of the guide column 11 is wound with the reset spring 10, the reset spring 10 plays a role of resetting the front movement of the front bearing seat 9, one end of the reset spring 10 is fixed with the column sleeve 12, the other end of the reset spring 10 is fixed with the rear end of the sliding sleeve 13, the front end portion of the guide column 11 is embedded with a limiting cap 14, the limiting cap 14 plays a role of limiting the front movement distance of the front bearing seat 9, the limiting cap 14 is attached to the front end of the sliding sleeve 13.

[0023] The rear end of the front bearing seat 9 is fixedly provided with a guide plate 23, the front end of the middle bearing seat 9 is fixedly provided with a guide shell 24, the guide plate 23 and the guide shell 24 play a role of guiding the front bearing seat 9, the guide plate 23 is slidingly installed in the inside of the guide shell 24, the front edge of the lifting table 5 is fixedly provided with a pull frame 40, the pull frame 40 cooperates with a pull cap 41 to play a role of pulling the toothed plate 22, the end portion of the pull frame 40 is slidingly provided with the toothed plate 22, the inside of the toothed plate 22 is slidingly provided with a T-shaped frame 21, the T-shaped frame 21 is fixed on the punching table 1, the T-shaped frame 21 plays a role of guiding the toothed plate 22, the end portion of the pull frame 40 is embedded with the pull cap 41, the pull cap 41 is attached to one side of the lower end of the toothed plate 22.

[0024] The rear part of the tooth plate 22 is engaged with the turnover gear 19, the inside of the turnover gear 19 is coaxially embedded with the connecting shaft 18, the connecting shaft 18 plays a role in bearing the turnover gear 19, the middle part of the connecting shaft 18 is rotatably embedded with the shaft seat 20, the lower end of the shaft seat 20 is fixed with the punching table 1, the tooth plate 22 plays a role in driving the turnover gear 19 to rotate, the upper end edge of the connecting shaft 18 is fixedly installed with the pushing frame 17, the end of the pushing frame 17 is rotatably installed with the pushing frame 16, the end of the pushing frame 16 is rotatably installed with the pushing seat 15, the pushing seat 15 plays a role in connection, the pushing frame 17 can drive the pushing frame 16 to move to push the sliding sleeve 13, the pushing seat 15 is fixed to the upper end of the sliding sleeve 13, the pulling frame 40 continues to move upwards to pull the tooth plate 22 upwards through the pull cap 41, thereby driving the turnover gear 19 to rotate, so that the pushing frame 17 can be turned over to drive the pushing frame 16 to move to push the sliding sleeve 13, thereby driving the front bearing seat 9 to move backwards, so that the No. 1 L-shaped frame 25 and the No. 2 L-shaped frame 26 on the front bearing seat 9 can be separated from below the punching position of the workpiece 42, at the same time, the grinding wheel 37 moves backwards to the punching position, in this process, the servo motor 38 drives the grinding wheel 37 on the rotating shaft 36 to rotate through the transmission gear 39 to remove burrs at the lower edge of the hole.

[0025] When punching, first press down the top seat 30, at this time the supporting spring 31 is contracted and deformed, then push the workpiece 42 on the No. 1 L-shaped frame 25 and the No. 2 L-shaped frame 26 on the bearing seat 9, at this time the No. 2 L-shaped frame 26 and the No. 1 L-shaped frame 25 respectively fit the two corners of the workpiece 42 to limit the workpiece 42, at the same time, the lower end and the end of the limiting frame 8 respectively fit the horizontal surface and the vertical surface of the workpiece 42 to firmly limit the workpiece 42 on the No. 1 L-shaped frame 25 and the No. 2 L-shaped frame 26, then release the top seat 30, the top seat 30 is reset under the pushing of the supporting spring 31 to support the rear end surface of the workpiece 42, then the hydraulic cylinder 4 works to drive the lifting table 5 to slide downwards on the guide column 2, thereby driving the punching head 6 on the lifting table 5 to move downwards to punch the edge of the workpiece 42, in this process, the pulling frame 40 on the lifting table 5 slides on the tooth plate 22, the tooth plate 22 remains stationary, when the hydraulic cylinder 4 drives the punching head 6 to complete punching and moves upwards, the pulling frame 40 slides upwards, after the pull cap 41 on the pulling frame 40 fits the tooth plate 22, the hydraulic cylinder 4 continues to work to move upwards, at this time the pulling frame 40 continues to move upwards to pull the tooth plate 22 upwards through the pull cap 41, thereby driving the turnover gear 19 to rotate, so that the pushing frame 17 can be turned over to drive the pushing frame 16 to move to push the sliding sleeve 13, thereby driving the front bearing seat 9 to move backwards, so that the No. 1 L-shaped frame 25 and the No. 2 L-shaped frame 26 on the front bearing seat 9 can be separated from below the punching position of the workpiece 42, at the same time, the grinding wheel 37 moves backwards to the punching position, in this process, the servo motor 38 drives the grinding wheel 37 on the rotating shaft 36 to rotate through the transmission gear 39 to remove burrs at the lower edge of the hole, thereby improving the punching quality.

[0026] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations and modifications are intended to be included within the scope of the application as defined in the following claims, along with the full scope of equivalents to which such claims are entitled.

Claims

1. A punching apparatus for building hardware, comprising a punching table (1), characterized in that: The upper linear array of the punching table (1) is provided with three bearing seats (9), a top piece is installed on the rear bearing seat (9), a rotating shaft (36) is connected to the front end of the front bearing seat (9), polishing wheels (37) are coaxially embedded on both ends of the rotating shaft (36), a No. 2 L-shaped frame (26) is fixedly installed on one end of the bearing seat (9), a No. 1 L-shaped frame (25) is fixedly installed on the other end of the bearing seat (9), the No. 1 L-shaped frame (25) is oppositely arranged with the No. 2 L-shaped frame (26), a punching pushing piece is installed at the upper end of the front of the punching table (1), two limiting frames (8) are fixedly installed on the upper end of the punching table (1) in a linear array, and the two limiting frames (8) are respectively aligned with the two bearing seats (9) at the front and middle parts.

2. A hole punching apparatus for building hardware according to claim 1, wherein: The lower ends of the two bearing seats (9) at the rear and middle parts are fixedly installed with support frames (28), the lower ends of the support frames (28) are fixed with the punching table (1), through holes (33) are penetratingly formed on the No. 1 L-shaped frame (25) and the No. 2 L-shaped frame (26) on the bearing seat (9) at the front part on the limiting frame (8) at the front part, a protruding frame (7) is rotatably installed on the outer surface of the rotating shaft (36), the end of the protruding frame (7) is fixed with the bearing seat (9) at the front part, a servo motor (38) is fixedly installed on the lower end of the protruding frame (7), transmission gears (39) are coaxially embedded on the output end of the servo motor (38) and the outer surface of the rotating shaft (36), and the two transmission gears (39) are engaged.

3. A hole punching apparatus for building hardware fittings as claimed in claim 1, wherein: The top piece comprises an adjusting seat (27) penetratingly and slidingly installed inside the bearing seat (9) at the rear part, a prism (29) is penetratingly and slidingly installed on the upper end of the adjusting seat (27), the lower end of the prism (29) penetrates out from the lower end of the adjusting seat (27), a top seat (30) is fixedly installed on the upper end of the prism (29), a threaded sleeve (35) is penetratingly embedded on the lower end face of the bearing seat (9) at the rear part, a threaded column (34) is penetratingly and screw-tightly installed inside the threaded sleeve (35), and the end of the threaded column (34) is tightly pressed against the adjusting seat (27).

4. A hole punching apparatus for building hardware according to claim 3, wherein: The lower end of the prism (29) is embedded with a limiting cap (32) which is attached to the lower end of the adjusting seat (27), a supporting spring (31) is wound on the outer side of the prism (29), the upper end of the supporting spring (31) is fixed with the top seat (30), and the lower end of the supporting spring (31) is fixed with the upper end of the adjusting seat (27).

5. A hole punching apparatus for building hardware according to claim 1, wherein: The punch pushing piece includes four guide columns (2) fixedly arranged in square on the upper end front part of the punching table (1), a bearing frame (3) fixedly arranged between the upper end parts of the four guide columns (2), a hydraulic cylinder (4) fixedly arranged at the upper end middle part of the bearing frame (3), the output end of the hydraulic cylinder (4) penetrating out from the lower end of the bearing frame (3), the output end of the hydraulic cylinder (4) in sliding fit with the bearing frame (3), a lifting table (5) fixedly arranged at the output end of the hydraulic cylinder (4), the corners of the lifting table (5) abutting the outer surface of the guide column (2), and two punching heads (6) fixedly arranged at the lower end middle part of the lifting table (5) in symmetry.

6. A hole punching apparatus for building hardware according to claim 5, wherein: One side of the bearing seat (9) in the middle part is fixedly arranged with a column sleeve (12), the inside of the column sleeve (12) is embedded with a guide column (11), the guide column (11) extends out from the front end of the column sleeve (12), the outer surface of the guide column (11) is fixedly arranged with a sliding sleeve (13), the side surface of the sliding sleeve (13) is fixed with the bearing seat (9) in the front part, the outer side of the guide column (11) is wound with a return spring (10), one end of the return spring (10) is fixed with the column sleeve (12), the other end of the return spring (10) is fixed with the rear end of the sliding sleeve (13), the front end part of the guide column (11) is embedded with a limiting cap (14), and the limiting cap (14) abuts the front end of the sliding sleeve (13).

7. A hole punching apparatus for building hardware according to claim 6, wherein: The rear end of the bearing seat (9) in the front part is fixedly arranged with a guide plate (23), the front end of the bearing seat (9) in the middle part is fixedly arranged with a guide shell (24), the guide plate (23) is slidingly arranged in the inside of the guide shell (24), the front end edge of the lifting table (5) is fixedly arranged with a pull frame (40), the end part of the pull frame (40) is slidingly arranged with a toothed plate (22), the inside of the toothed plate (22) is slidingly arranged with a T-shaped frame (21), the T-shaped frame (21) is fixed on the punching table (1), the end part of the pull frame (40) is embedded with a pull cap (41), and the pull cap (41) abuts one side of the lower end of the toothed plate (22).

8. A hole punching apparatus for building hardware according to claim 7, wherein: The rear part of the toothed plate (22) is engaged with a turnover gear (19), the inside of the turnover gear (19) is coaxially embedded with a connecting shaft (18), the middle part of the connecting shaft (18) is rotatably embedded with a shaft seat (20), the lower end of the shaft seat (20) is fixed with the punching table (1), the upper end edge of the connecting shaft (18) is fixedly arranged with a pushing frame (17), the end part of the pushing frame (17) is rotatably arranged with a push frame (16), the end part of the push frame (16) is rotatably arranged with a push seat (15), and the push seat (15) is fixed on the upper end of the sliding sleeve (13).

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