Automatic hole opening machine for door closer

Abstract

The present invention belongs to the technical field of door closer production, and specifically relates to an automatic hole punching machine for door closers, which includes a base and a transmission belt installed on the base, a workbench is installed on the base, the transmission belt transports the door closer shell to the workbench, a gantry is installed on the base, a cylinder and a puncher are installed on the gantry, and the cylinder is connected to a chip removal component. In the process of opening a hole on one side of the door closer shell, the chip suction components on both sides of the sliding frame of the present invention are close to each other, and at this time, the chip opening debris on the surface of the door closer shell is adsorbed by a magnetic sheet; in the process of the chip suction component moving, the gas inside the air inlet box is transported to the direction of the air outlet box through the cavity of the door closer shell, and the filter plate on the air outlet box blocks the debris. When the piston plate 1 and the piston plate 2 finish moving, the debris on the filter plate falls into the blanking box under the action of gravity, so that the debris on the surface of the door closer shell and the inside of the cavity of the door closer shell are cleaned at the same time, and the debris is prevented from entering the gap of the transmission belt and causing damage to the transmission belt.

Description

Technical Field

[0001] The invention belongs to the technical field of door closer production, and in particular relates to an automatic hole opening machine for door closers. Background Art

[0002] The door closer is a spring-like hydraulic device on the door head. It consists of a housing, hydraulic cylinder, gear set, spring, regulating valve, connector and seal. When the door is opened, it can be released after compression to automatically close the door. It has the function of a spring door, which can ensure that the door is accurately and timely closed to the initial position after it is opened. The production process of the door closer is a complete assembly line, usually for manufacturing, punching and assembly.

[0003] In the process of producing the door closer shell, the shell needs to be transported to the punching table through a conveyor, and then the shell is punched by a punching machine. Due to different production requirements, the form of the hole is also different, mainly divided into single-sided hole opening and double-sided hole opening. In actual use, the single-sided single hole form is the most common. In the process of punching a hole on one side of the shell, the debris generated by the hole will remain on the surface of the shell or inside the shell. When the conveyor is transporting the shell, the debris is easy to enter the gap of the conveyor. Long-term accumulation of debris will cause damage to the device and affect the service life of the device. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic hole opening machine for door closers to solve the technical problems in the prior art in view of the deficiencies in the prior art.

[0005] The object of the present invention can be achieved by the following technical solutions: an automatic hole punching machine for door closers, comprising a base and a transmission belt mounted on the base, a workbench mounted on the base, the transmission belt transports the door closer shell to the workbench, a gantry mounted on the base, a cylinder and a punch mounted on the gantry, and the cylinder connected to a chip removal assembly; The chip removal assembly comprises a U-shaped frame and an air outlet box and an air inlet box respectively mounted on both sides of the U-shaped frame, a chip suction assembly is slidably mounted on the top of the U-shaped frame, a liftable transmission plate is mounted on the U-shaped frame, and both sides of the transmission plate are respectively connected to the chip suction assembly through transmission connecting rods; The air outlet box includes a piston plate 1 installed inside the air outlet box, the piston plate 1 is connected to the driven rack, and the chip suction assembly drives the driven rack to move in the opposite direction; the air intake box includes a piston plate 2 installed inside the air intake box, the piston plate 2 is connected to the L-shaped connecting rod, and the chip suction assembly drives the L-shaped connecting rod to move synchronously.

[0006] As a further optimization or improvement of this solution, a sliding frame and a fixed rod are respectively installed on the U-shaped frame, the fixed rod is connected to the cylinder, a motor and a threaded rod are installed on the fixed rod, the motor drives the threaded rod to rotate, the threaded rod is threadedly connected to the transmission plate, and the chip suction assembly is slidably installed in the sliding frame.

[0007] As a further optimization or improvement of the present solution, the air outlet box further includes a transmission gear, which is respectively meshed with the driven rack and the driving rack.

[0008] As a further optimization or improvement of the present solution, filter plates are rotatably installed in the air outlet box and the air inlet box respectively, and a blanking box is installed at the bottom of the filter plate.

[0009] As a further optimization or improvement of the present solution, the chip suction assembly includes a slider, a rotating shaft is rotatably installed inside the slider, a magnetic sheet is installed on one side of the rotating shaft, and a partial gear is installed on the other side, a transmission rack is arranged inside the sliding frame, the transmission rack is meshed with some gears, a scraping block is installed on the slider, and the rotating shaft is connected to the scraping block through a reset spring, and the chip suction assembly drives the filter plate to rotate.

[0010] As a further optimization or improvement of the present solution, a knocking head is installed at the bottom of the filter plate, the opening of the blanking box is arc-shaped, a fixed head is installed on the opening of the blanking box, and the fixed head is in contact with the knocking head.

[0011] As a further optimization or improvement of the present solution, the workbench includes a mounting table, which is mounted on a base, a punching table is mounted on the mounting table, a bottom groove is opened in the punching table, a rubber telescopic cylinder is installed in the bottom groove, the rubber telescopic cylinder is connected to a ventilation plate, inclined plates are installed on both sides of the ventilation plate, the ventilation plate is connected to the bottom groove through a telescopic spring, and a support plate is installed on the ventilation plate.

[0012] As a further optimization or improvement of the present solution, a stopper is installed on the base, and the stopper is located on both sides of the transmission belt.

[0013] Beneficial effects of the present invention: (1) During the process of opening a hole on one side of the door closer shell, the chip suction components on both sides of the sliding frame of the present invention approach each other, so that the chip suction components gradually approach the hole opening position. At this time, the chip opening debris on the surface of the door closer shell is absorbed by the magnetic sheet; Specifically, during the movement of the chip suction assembly, the chip suction assemblies on both sides of the sliding frame respectively drive piston plate one and piston plate two to move in the same direction. At this time, the internal gas of the air inlet box is transported to the air outlet box through the door closer shell cavity, and the filter plate on the air outlet box blocks the debris. When piston plate one and piston plate two finish moving, the debris on the filter plate falls into the drop box under the action of gravity, thereby cleaning the debris on the surface of the door closer shell and the inside of the door closer shell cavity at the same time, avoiding debris from entering the gap of the transmission belt and causing damage to the transmission belt.

[0014] (2) After the single-sided hole of the door closer shell is opened, the transmission plate moves the chip suction assembly from the middle of the sliding frame to both sides through the transmission connecting rod. Some gears on the rotating shaft first mesh with the transmission rack inside the sliding frame. As the chip suction assembly moves, the rotating shaft gradually rotates, the reset spring is stretched, and at the same time, the scraper block on the slider scrapes off the debris adsorbed on the magnetic sheet and collects it in the collection box, so that the debris on the chip suction assembly is cleaned in time; Specifically, when the chip suction assembly is moving, it drives the filter plate to rotate, and the knocking head at the bottom of the filter plate is disengaged from the knocking head. At the same time, the spring on the filter plate is compressed. As the chip suction assembly moves again, it is disengaged from the filter plate, and the spring drives the filter plate to reset, causing the knocking head at the bottom of the filter plate to hit the fixed head, vibrating the debris stuck on the filter plate and causing it to fall into the drop box under the action of gravity, thereby cleaning the filter plate and avoiding clogging of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is an exploded view of the overall structure of the present invention.

[0018] Figure 3 This is an exploded view of the overall structure of the chip removal component.

[0019] Figure 4 It is a schematic diagram of the connection between the U-shaped frame and the fixed rod.

[0020] Figure 5 It is a schematic diagram of the U-shaped frame being connected to the air outlet box and the air inlet box respectively.

[0021] Figure 6 for Figure 5 A magnified view of the structure of part A.

[0022] Figure 7 for Figure 5 Enlarged view of the structure of part B.

[0023] Figure 8 This is a schematic diagram of the overall structure of the workbench.

[0024] Fig. 9 This is the coordination diagram between the workbench and the door closer housing.

[0025] The following are marked in the figure: 1, base; 2, transmission belt; 3, stopper; 4, gantry; 5, workbench; 501, mounting table; 502, punching table; 503, bottom groove; 504, rubber telescopic cylinder; 505, telescopic spring; 506, support plate; 507, ventilation plate; 508, inclined plate; 6, cylinder; 7, puncher; 8, chip removal assembly; 802, telescopic sleeve; 803, fixed rod; 804, motor; 805, threaded rod; 806, transmission plate; 807, transmission connecting rod; 808, sliding frame; 809, chip suction assembly; 80 90. Slider; 8091. Rotating shaft; 8092. Magnetic sheet; 8093. Part of gear; 8094. Transmission rack; 8095. Return spring; 8096. Scraper block; 810. U-shaped frame; 811. Air outlet box; 8110. Piston plate one; 8111. Driven rack; 8112. Transmission gear; 8113. Active rack; 812. Air inlet box; 8120. Piston plate two; 8121. L-shaped connecting rod; 813. Filter plate; 814. Blanking box; 815. Knocking head; 816. Fixed head; 9. Door closer housing. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 5 , an automatic hole-opening machine for door closers, comprising a base 1 and a transmission belt 2 mounted on the base 1, a workbench 5 mounted on the base 1, the transmission belt 2 transports the door closer shell 9 to the workbench 5, a gantry 4 mounted on the base 1, a cylinder 6 and a punch 7 mounted on the gantry 4, the cylinder 6 connected to a chip removal assembly 8; the chip removal assembly 8 comprises a U-shaped frame 810 and an air outlet box 811 and an air inlet box 812 respectively mounted on both sides of the U-shaped frame 810, a chip suction assembly 809 is slidably mounted on the top of the U-shaped frame 810, and a liftable transmission assembly 809 is mounted on the U-shaped frame 810 Plate 806, both sides of the transmission plate 806 are connected to the chip suction assembly 809 through the transmission connecting rod 807 respectively; the air outlet box 811 includes a piston plate 8110 installed inside the air outlet box 811, the piston plate 8110 is connected to the driven rack 8111, and the chip suction assembly 809 drives the driven rack 8111 to move in the reverse direction; the air inlet box 812 includes a piston plate 8120 installed inside the air inlet box 812, the piston plate 8120 is connected to the L-shaped connecting rod 8121, and the chip suction assembly 809 drives the L-shaped connecting rod 8121 to move synchronously.

[0028] Specifically, the U-shaped frame 810 is respectively installed with a sliding frame 808 and a fixed rod 803, the fixed rod 803 is connected to the cylinder 6, the fixed rod 803 is installed with a motor 804 and a threaded rod 805, the motor 804 drives the threaded rod 805 to rotate, the threaded rod 805 is threadedly connected to the transmission plate 806, and the chip suction assembly 809 is slidably installed in the sliding frame 808.

[0029] Specifically, the stoppers 3 are installed on the base 1 , and the stoppers 3 are located on both sides of the transmission belt 2 .

[0030] It should be noted that the motor 804 can drive the threaded rod 805 to rotate through the gears. Figure 3-Figure 4 The U-shaped frame 810 has openings on three sides. The openings on the two sides of the U-shaped frame 810 ensure that the air outlet box 811 and the air inlet box 812 are connected to the cavity of the door closer shell 9. The opening on the top surface of the U-shaped frame 810 is convenient for the puncher 7 to open a hole in the door closer shell 9. In order to avoid splashing of debris during the opening process of the door closer shell 9, a baffle can be set on the opening edge of the top surface of the U-shaped frame 810.

[0031] In the process of punching holes on one side of the door closer shell 9, the door closer shell 9 is first transported to the workbench 5 via the transmission belt 2, and then the cylinder 6 is started, and the cylinder 6 drives the U-shaped frame 810 to move downward via the fixing rod 803, so that the U-shaped frame 810 is sleeved on the door closer shell 9. At this time, the U-shaped frame 810 fits the door closer shell 9, and the air outlet box 811 and the air inlet box 812 on both sides of the U-shaped frame 810 are connected to the internal cavity of the door closer shell 9. The puncher 7 is started, and a hole is punched on one side of the door closer shell 9 by the puncher 7.

[0032] Start the motor 804, and the motor 804 drives the threaded rod 805 to rotate, and the threaded rod 805 drives the transmission plate 806 to rise. The transmission plate 806 drives the chip suction components 809 on both sides of the sliding frame 808 to approach each other through the transmission connecting rod 807, so that the chip suction components 809 gradually approach the hole opening position. At this time, the hole opening debris is adsorbed by the magnetic sheet 8092.

[0033] When the punch 7 has finished drilling holes on one side of the door closer shell 9, debris will inevitably enter the cavity of the door closer shell 9. In order to prevent the debris inside the cavity of the door closer shell 9 from entering the transmission belt 2, during the movement of the chip suction assembly 809 of the present invention, the chip suction assemblies 809 on both sides of the sliding frame 808 respectively drive the piston plate 1 8110 inside the air outlet box 811 and the piston plate 2 8120 inside the air inlet box 812 to move in the same direction. At this time, the gas inside the air inlet box 812 is transported toward the air outlet box 811 through the cavity of the door closer shell 9. During this process, the filter plate 813 on the air outlet box 811 blocks the debris. When the piston plate 1 8110 and the piston plate 2 8120 have finished moving, the debris on the filter plate 813 falls into the blanking box 814 under the action of gravity.

[0034] See also Figure 5 The air outlet box 811 also includes a transmission gear 8112, which is respectively meshed with the driven rack 8111 and the driving rack 8113.

[0035] It should be noted that the chip suction assemblies 809 move relative to each other. When the chip suction assemblies 809 are moving, the chip suction assemblies 809 on one side of the sliding frame 808 drive the piston plate 1 8110 and the chip suction assemblies 809 to move in opposite directions through the transmission cooperation between the active rack 8113, the transmission gear 8112 and the driven rack 8111; the chip suction assemblies 809 on the other side of the sliding frame 808 drive the piston plate 2 8120 to move in the same direction through the L-shaped connecting rod 8121, thereby ensuring that the chip suction assemblies 809 on both sides of the sliding frame 808 respectively drive the piston plate 1 8110 and the piston plate 2 8120 to move in the same direction.

[0036] See also Figure 5-Figure 9 The chip suction assembly 809 includes a slider 8090, a rotating shaft 8091 is rotatably installed inside the slider 8090, a magnetic sheet 8092 is installed on one side of the rotating shaft 8091, and a partial gear 8093 is installed on the other side, a transmission rack 8094 is arranged inside the sliding frame 808, the transmission rack 8094 is meshed with the partial gear 8093, a scraping block 8096 is installed on the slider 8090, and the rotating shaft 8091 is connected to the scraping block 8096 through a reset spring 8095, and the chip suction assembly 809 pushes the filter plate 813 to rotate.

[0037] Specifically, a knocking head 815 is installed at the bottom of the filter plate 813 , the opening of the blanking box 814 is arc-shaped, a fixing head 816 is installed on the opening of the blanking box 814 , and the fixing head 816 is in contact with the knocking head 815 .

[0038] Specifically, the filter plates 813 are rotatably installed in the air outlet box 811 and the air inlet box 812 respectively, and the drop box 814 is installed at the bottom of the filter plate 813.

[0039] It should be noted that see Figure 5 The driven rack 8111 and the L-shaped connecting rod 8121 are respectively connected to the slide grooves on the air outlet box 811 and the air inlet box 812 through the telescopic sleeve 802. The telescopic sleeve 802 can ensure the sealing of the air outlet box 811 and the air inlet box 812, and improve the air circulation speed of the internal cavity of the door closer housing 9.

[0040] When the door closer housing 9 is opened, the motor 804 drives the transmission plate 806 to move downward through the threaded rod 805, and the transmission plate 806 moves the chip suction assembly 809 from the middle of the sliding frame 808 to both sides through the transmission connecting rod 807. Figure 6During this process, the partial gear 8093 on the rotating shaft 8091 first engages with the transmission rack 8094 inside the sliding frame 808. As the chip suction assembly 809 moves, the rotating shaft 8091 gradually rotates, the return spring 8095 is stretched, and at the same time, the scraper block 8096 on the slider 8090 scrapes off the debris adsorbed on the magnetic sheet 8092 and is collected by the collection box.

[0041] The filter plate 813 is prone to clogging during use, causing the air flow rate in the cavity of the door closer housing 9 to decrease, resulting in incomplete cleaning of debris inside the cavity of the door closer housing 9. Figure 6-Figure 7 The chip suction assembly 809 drives the filter plate 813 to rotate, and the knocking head 815 at the bottom of the filter plate 813 breaks away from the contact with the knocking head 815. At the same time, the spring on the filter plate 813 is compressed. As the chip suction assembly 809 moves again, the chip suction assembly 809 breaks away from the contact with the filter plate 813, and the spring drives the filter plate 813 to reset, so that the knocking head 815 at the bottom of the filter plate 813 hits the fixed head 816, vibrating the debris blocked on the filter plate 813 and dropping it into the drop box 814 under the action of gravity.

[0042] See also Figure 8-Figure 9 The workbench 5 includes a mounting table 501, which is mounted on a base 1, a punching table 502 is mounted on the mounting table 501, a bottom groove 503 is provided in the punching table 502, a rubber telescopic cylinder 504 is installed in the bottom groove 503, the rubber telescopic cylinder 504 is connected to a ventilation plate 507, inclined plates 508 are installed on both sides of the ventilation plate 507, the ventilation plate 507 is connected to the bottom groove 503 through a telescopic spring 505, and a support plate 506 is installed on the ventilation plate 507.

[0043] It should be noted that when it is necessary to drill holes on both sides of the door closer shell 9, that is, to penetrate the top and bottom surfaces of the door closer shell 9 by the puncher 7, debris will not only remain on the surface of the door closer shell 9 or the inside of the door closer shell 9, but also remain on the bottom surface of the door closer shell 9 and the workbench 5. In the process of the transmission belt 2 transporting the door closer shell 9 to the workbench 5 one by one, the debris on the bottom surface of the door closer shell 9 and the workbench 5 will enter the inside of the workbench 5, causing damage to the workbench 5.

[0044] When the transmission belt 2 conveys the door closer housing 9 to the top of the support plate 506, the cylinder 6 puts the U-shaped frame 810 on the door closer housing 9, and then the cylinder 6 continues to drive the U-shaped frame 810 and the door closer housing 9 to move downward, see Fig. 9, the door closer shell 9 presses the support plate 506 during the downward movement, the telescopic spring 505 and the rubber telescopic cylinder 504 are compressed, the gas inside the rubber telescopic cylinder 504 is gradually emptied through the mesh on the ventilation plate 507, and the door closer shell 9 gradually fits with the punching table 502. At this time, the debris generated by the bottom opening of the door closer shell 9 falls on the inclined plate 508. When the double-sided opening of the door closer shell 9 is completed, the cylinder 6 drives the U-shaped frame 810 to move upward, and the telescopic spring 505 drives the support plate 506 to reset. At this time, the rubber telescopic cylinder 504 is restored, and the suction force generated by the rubber telescopic cylinder 504 sucks the remaining debris on the bottom opening surface of the door closer shell 9 into the bottom groove 503 through the mesh of the ventilation plate 507 and falls on the inclined plate 508, thereby realizing the cleaning of the debris remaining on the bottom surface of the door closer shell 9 to prevent it from entering the inside of the transmission belt 2.

[0045] It should be noted that the length and inclination angle of the inclined plate 508 can be adjusted according to actual use. Since the debris absorbed by the rubber telescopic tube 504 falls on the inclined plate 508, when the rubber telescopic tube 504 is pressed again, the rubber telescopic tube 504 can effectively prevent the debris from being blown up.

[0046] The implementation principle of the present invention is as follows: in the process of punching a hole on one side of the door closer shell 9, the door closer shell 9 is first transported to the workbench 5 by the transmission belt 2, and then the cylinder 6 is started, and the cylinder 6 drives the U-shaped frame 810 to move downward through the fixing rod 803, so that the U-shaped frame 810 is sleeved on the door closer shell 9. At this time, the U-shaped frame 810 fits the door closer shell 9, and the air outlet box 811 and the air inlet box 812 on both sides of the U-shaped frame 810 are connected to the internal cavity of the door closer shell 9. The puncher 7 is started, and a hole is punched on one side of the door closer shell 9 by the puncher 7.

[0047] Start the motor 804, and the threaded rod 805 is driven to rotate by the motor 804. The threaded rod 805 drives the transmission plate 806 to rise. The transmission plate 806 drives the chip suction components 809 on both sides of the sliding frame 808 to approach each other through the transmission connecting rod 807, so that the chip suction components 809 gradually approach the opening position. At this time, the debris from the opening on the surface of the door closer shell 9 is adsorbed by the magnetic sheet 8092.

[0048] When the punch 7 has finished drilling holes on one side of the door closer shell 9, debris will inevitably enter the cavity of the door closer shell 9. In order to prevent the debris inside the cavity of the door closer shell 9 from entering the transmission belt 2, during the movement of the chip suction assembly 809 of the present invention, the chip suction assemblies 809 on both sides of the sliding frame 808 respectively drive the piston plate 1 8110 inside the air outlet box 811 and the piston plate 2 8120 inside the air inlet box 812 to move in the same direction. At this time, the gas inside the air inlet box 812 is transported toward the air outlet box 811 through the cavity of the door closer shell 9. During this process, the filter plate 813 on the air outlet box 811 blocks the debris. When the piston plate 1 8110 and the piston plate 2 8120 have finished moving, the debris on the filter plate 813 falls into the blanking box 814 under the action of gravity.

[0049] After the hole is opened, the motor 804 drives the transmission plate 806 to move downward through the threaded rod 805, and the transmission plate 806 moves the chip suction assembly 809 from the middle of the sliding frame 808 to both sides through the transmission connecting rod 807. Figure 6 During this process, the partial gear 8093 on the rotating shaft 8091 first engages with the transmission rack 8094 inside the sliding frame 808. As the chip suction assembly 809 moves, the rotating shaft 8091 gradually rotates, the return spring 8095 is stretched, and at the same time, the scraper block 8096 on the slider 8090 scrapes off the debris adsorbed on the magnetic sheet 8092 and is collected by the collection box.

[0050] During the movement of the chip suction component 809, the chip suction component 809 drives the filter plate 813 to rotate, and the knocking head 815 at the bottom of the filter plate 813 breaks away from the contact with the knocking head 815. At the same time, the spring on the filter plate 813 is compressed. As the chip suction component 809 moves again, the chip suction component 809 breaks away from the contact with the filter plate 813, and the spring drives the filter plate 813 to reset, so that the knocking head 815 at the bottom of the filter plate 813 hits the fixed head 816, vibrating the debris blocking the filter plate 813 and causing it to fall into the drop box 814 under the action of gravity, thereby cleaning the filter plate 813 and avoiding blockage of the filter plate 813.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An automatic hole opening machine for door closers, characterized in that: The invention comprises a base (1) and a transmission belt (2) mounted on the base (1); a workbench (5) is mounted on the base (1); the transmission belt (2) transports a door closer housing (9) to the workbench (5); a gantry (4) is mounted on the base (1); a cylinder (6) and a punch (7) are mounted on the gantry (4); and the cylinder (6) is connected to a chip removal component (8); The chip removal assembly (8) comprises a U-shaped frame (810) and an air outlet box (811) and an air inlet box (812) respectively mounted on both sides of the U-shaped frame (810); a chip suction assembly (809) is slidably mounted on the top of the U-shaped frame (810); a liftable transmission plate (806) is mounted on the U-shaped frame (810); and both sides of the transmission plate (806) are respectively connected to the chip suction assembly (809) via transmission connecting rods (807); The air outlet box (811) includes a piston plate 1 (8110) installed inside the air outlet box (811), the piston plate 1 (8110) is connected to the driven rack (8111), and the chip suction assembly (809) drives the driven rack (8111) to move in the opposite direction; the air intake box (812) includes a piston plate 2 (8120) installed inside the air intake box (812), the piston plate 2 (8120) is connected to the L-shaped connecting rod (8121), and the chip suction assembly (809) drives the L-shaped connecting rod (8121) to move synchronously.

2. The automatic hole opening machine for door closers according to claim 1, characterized in that: A sliding frame (808) and a fixed rod (803) are respectively mounted on the U-shaped frame (810); the fixed rod (803) is connected to the cylinder (6); a motor (804) and a threaded rod (805) are mounted on the fixed rod (803); the motor (804) drives the threaded rod (805) to rotate; the threaded rod (805) is threadedly connected to the transmission plate (806); and the chip suction assembly (809) is slidably mounted in the sliding frame (808).

3. The automatic hole opening machine for door closers according to claim 1, characterized in that: The air outlet box (811) further comprises a transmission gear (8112), and the transmission gear (8112) is respectively meshed with the driven rack (8111) and the driving rack (8113).

4. The automatic hole opening machine for door closers according to claim 1, characterized in that: The filter plates (813) are rotatably mounted in the air outlet box (811) and the air inlet box (812), respectively, and a material drop box (814) is mounted at the bottom of the filter plate (813).

5. The automatic hole opening machine for door closers according to claim 1, characterized in that: The chip suction assembly (809) comprises a slider (8090), a rotating shaft (8091) is rotatably mounted inside the slider (8090), a magnetic sheet (8092) is mounted on one side of the rotating shaft (8091), and a partial gear (8093) is mounted on the other side, a transmission rack (8094) is arranged inside the sliding frame (808), the transmission rack (8094) is meshed with the partial gear (8093), a scraping block (8096) is mounted on the slider (8090), the rotating shaft (8091) is connected to the scraping block (8096) via a return spring (8095), and the chip suction assembly (809) drives the filter plate (813) to rotate.

6. The automatic hole opening machine for door closers according to claim 5, characterized in that: A knocking head (815) is installed at the bottom of the filter plate (813); the opening of the blanking box (814) is arranged in an arc shape; a fixing head (816) is installed on the opening of the blanking box (814); the fixing head (816) is in contact with the knocking head (815).

7. The automatic hole opening machine for door closers according to claim 1, characterized in that: The workbench (5) comprises a mounting platform (501), wherein the mounting platform (501) is mounted on a base platform (1), a punching platform (502) is mounted on the mounting platform (501), a bottom groove (503) is provided in the punching platform (502), a rubber telescopic cylinder (504) is mounted in the bottom groove (503), the rubber telescopic cylinder (504) is connected to a ventilation plate (507), inclined plates (508) are mounted on both sides of the ventilation plate (507), the ventilation plate (507) is connected to the bottom groove (503) via a telescopic spring (505), and a support plate (506) is mounted on the ventilation plate (507).

8. The automatic hole opening machine for door closers according to claim 1, characterized in that: A stopper (3) is mounted on the base (1), and the stopper (3) is located on both sides of the transmission belt (2).

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