Automatic punching machine

Abstract

The invention provides an automatic punching machine which comprises a working table plate, a punching die mounting frame is arranged at the upper end of the working table plate, a punching driving mechanism is arranged on the punching die mounting frame, and the output end of the punching driving mechanism is connected with a punching needle; a stamping die bottom plate is fixedly arranged at the upper end of the working table plate, a lower die vertical plate is fixedly arranged at the upper end of the stamping die bottom plate, a C-shaped lower die is fixedly arranged on the right side of the lower die vertical plate, and an avoiding through hole is formed in the upper end of the C-shaped lower die; a material returning plate is movably arranged on the right side of the lower die vertical plate, an avoiding opening is formed in the lower end of the material returning plate, the material returning plate is arranged on the outer side of the C-shaped lower die in a sleeving mode through the avoiding opening, a material returning driving mechanism is arranged on the left side of the lower die vertical plate, and the output end of the material returning driving mechanism is connected with the material returning plate. An upward jacking air cylinder is arranged at the upper end of the punching die bottom plate and located under the C-shaped lower die. The punching machine is used for punching the filter for the air conditioner, manual participation of workers can be reduced, and the punching machine has the advantages of being high in automation degree and high in productivity.

Description

Technical Field

[0001] The present invention relates to a punching machine, in particular to an automatic punching machine. Background Art

[0002] The air conditioning filter is a device that plays the role of filtering impurities in the air conditioning system, including a shell formed by closing the end of a copper tube, the two ends of the shell are an inlet and an outlet respectively, a coarse metal mesh is provided in the inlet of the shell, and a fine metal mesh is provided in the outlet of the shell, and the coarse metal mesh and the fine metal mesh are used to filter impurities more effectively. However, in the process of producing the above-mentioned air conditioning filter, workers are required to manually punch holes in the side wall of the above-mentioned air conditioning filter, which has the defects of low automation and low production capacity. Summary of the invention

[0003] In view of this, an object of the present invention is to provide an automatic punching machine, which has the advantages of high automation and high production capacity.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: an automatic punching machine, comprising a worktable, a punching die mounting frame is arranged on the upper end of the worktable, a punching die mounting frame is arranged on the punching die mounting frame, and an output end of the punching drive mechanism extends vertically downward and is connected to a punching needle; A punching die bottom plate is fixedly arranged at the upper end of the workbench plate, a lower die vertical plate is fixedly arranged at the upper end of the punching die bottom plate, a C-shaped lower die is fixedly arranged on the right side of the lower die vertical plate, the C-shaped lower die is located directly below the punching needle, and an avoidance through hole is provided at the upper end of the C-shaped lower die for the punching needle to pass through; A material stripping plate is movably provided on the right side of the lower mold vertical plate, a avoidance opening is provided at the lower end of the material stripping plate, and the material stripping plate is sleeved on the outer side of the C-shaped lower mold via the avoidance opening. A material stripping driving mechanism is provided on the left side of the lower mold vertical plate, and the output end of the material stripping driving mechanism passes through the lower mold vertical plate and is connected to the material stripping plate, so as to drive the material stripping plate to move along the axial direction of the C-shaped lower mold; An upper cylinder is arranged at the upper end of the punching die bottom plate, and the upper cylinder is located directly below the C-shaped lower die.

[0005] Through the above technical scheme, when in use, the first step is to put one end of the air-conditioning filter onto the C-shaped lower mold, so that the upper inner wall of the air-conditioning filter abuts against the upper outer wall of the C-shaped lower mold. At this time, the C-shaped lower mold can support the air-conditioning filter. The second step is to drive the punch needle downward by the punching drive mechanism. When the lower end of the punch needle contacts the air-conditioning filter, the punch needle punches the surface of the air-conditioning filter. When the lower end of the punch needle passes through the air-conditioning filter and enters the avoidance through-hole, the punching process of the air-conditioning filter is completed, and the air-conditioning filter is formed with an inner flange at the punching position. The third step is to drive the punch needle upward by the punching drive mechanism to separate the punch needle from the air-conditioning filter. The fourth step is to lift the air-conditioning filter upward by the upper cylinder, so that the inner flange on the air-conditioning filter is separated from the avoidance through-hole. The fifth step is to drive the stripping plate to move along the C-shaped lower mold by the stripping drive mechanism to remove the air-conditioning filter from the C-shaped lower mold. Punching holes in the air-conditioning filter by the punching machine can reduce the manual involvement of workers and has the advantages of high automation and high productivity.

[0006] Preferably, the material return drive mechanism includes a material return mounting shaft, a material return mounting plate is fixedly sleeved on the material return mounting shaft, a material return cylinder is fixedly arranged on the left side of the material return mounting plate, the output end of the material return cylinder passes through the material return mounting plate and is connected to a material return adjustment plate, an adjustment mounting shaft is arranged on the right side of the material return adjustment plate, and the adjustment mounting shaft passes through the lower mold vertical plate and is connected to the material return plate.

[0007] Through the above technical solution, by setting the material return installation shaft and the material return installation plate, the material return cylinder and the lower mold vertical plate are installed separately, so that different specifications of material return cylinders can be used. By setting the material return adjustment plate and the material return installation shaft, different specifications of material return cylinders can be connected to the material return plate, thereby improving the adaptability of the above punching machine to different specifications of material return cylinders.

[0008] Preferably, a turntable support frame is fixedly provided on the upper end of the worktable plate, the turntable support frame is located on the right side of the lower mold vertical plate, a feeding turntable is rotatably provided on the turntable support frame, a plurality of feeding openings are opened on the feeding turntable along the circumferential direction, a rotary drive mechanism is provided on the turntable support frame, and an output end of the rotary drive mechanism is connected to the feeding turntable to drive the feeding turntable to rotate circumferentially; A feed mounting frame is provided at the upper end of the worktable, and the feed mounting frame is located on the right side of the turntable support frame. A feed push rod is slidably provided on the feed mounting frame, and the feed push rod is opposite to the C-shaped lower mold on the left and right. A feed driving mechanism is provided on the feed mounting frame, and the output end of the feed driving mechanism is connected to the feed push rod to drive the feed push rod to move axially. An arc-shaped baffle is fixedly provided on the feed mounting frame, and the arc-shaped baffle cover is provided above the feed turntable to cover the feed opening above; A loading mechanism is provided at the upper end of the workbench, and the loading mechanism is located at the rear side of the feeding turntable, and is used to place the air-conditioning filters to be processed into the feeding opening one by one; The upper end of the workbench is provided with a material unloading inclined plate, and the material unloading inclined plate is located at the front side of the feeding turntable, and is used to send the processed air-conditioning filter out of the workbench.

[0009] According to the above technical scheme, when in use, in the first step, the feed turntable is driven to rotate circumferentially by the rotary drive mechanism, so that a feed opening on the feed turntable is connected to the discharge port of the loading device, in the second step, a filter for air conditioning to be processed is placed into the feed opening by the loading device, in the third step, the feed turntable is driven to continue to rotate by the rotary drive mechanism, during which the unprocessed filter for air conditioning stays in the feed opening under the action of the arc baffle, in the fourth step, when the feed opening equipped with the filter for air conditioning is rotated to be opposite to the C-shaped lower mold, the feed push rod is driven to move to the left by the feed drive mechanism, and then the filter for air conditioning is mounted on the outer side of the C-shaped lower mold, in the fifth step, the filter for air conditioning is punched, in the sixth step, the processed filter for air conditioning is pushed back into the feed opening, in the seventh step, the feed turntable is driven to continue to rotate by the rotary drive mechanism, when the processed filter for air conditioning is rotated to be separated from the arc baffle, the filter for air conditioning will automatically fall onto the discharge inclined plate and slide downward along the discharge inclined plate. By adding the above structure, the manual participation of workers can be further reduced, thereby improving the automation level and production capacity of the above punching machine.

[0010] Preferably, the rotary drive mechanism includes a servo motor, a driving pulley is fixedly provided on the output end of the servo motor, a driven pulley is rotatably provided on the right side of the turntable support frame, the driven pulley is coaxially connected to the feeding turntable through a connecting shaft, and a transmission belt is tensioned between the driving pulley and the driven pulley.

[0011] Through the above technical solution, when in use, the servo motor will directly drive the driving pulley to rotate circumferentially. At the same time, the driving pulley will drive the feeding turntable to rotate circumferentially through the transmission belt and the driven pulley.

[0012] Preferably, the feed drive mechanism includes a feed drive cylinder, which is fixedly arranged on the right side of the feed mounting frame, and the output end of the feed drive cylinder passes through the feed mounting frame and is connected to a feed connecting plate, and the feed connecting plate is fixedly sleeved on the outer side of the feed push rod.

[0013] Through the above technical solution, the feed drive cylinder can drive the feed push rod to move axially through the feed connecting plate.

[0014] Preferably, the feeding mechanism includes a fixed bracket, a silo obliquely arranged on the fixed bracket, and two groups of material blocking members arranged at the silo discharge port along the moving direction of the air-conditioning filter. The silo discharge port is inclined downward and toward one side of the feeding turntable. A single air-conditioning filter can be supplied by opening and closing the two groups of material blocking members.

[0015] Through the above technical solution, when in use, the air-conditioning filters to be processed are neatly stacked inside the silo. Since the silo is set at an angle, the air-conditioning filters inside the silo will move toward the discharge port under the action of their own weight. When a single air-conditioning filter needs to be supplied, the first step is to control the upper material blocking member to open so that the single air-conditioning filter inside the silo will enter between the two material blocking members. The second step is to control the upper material blocking member to close to block the remaining air-conditioning filters in the silo. The third step is to control the lower material blocking member to open. At this time, the air-conditioning filter between the two material blocking members will slide from the discharge port and fall above the feeding trough. The fourth step is to control the lower material blocking member to close. The fifth step is to push the air-conditioning filter in the feeding trough into the bearing seat through the feeding cylinder to complete the supply of the air-conditioning filter.

[0016] Preferably, the material blocking member includes a mounting bracket, a material blocking cylinder arranged on the mounting bracket, and a material blocking plate arranged at an output end of the material blocking cylinder.

[0017] Through the above technical scheme, when the material blocking cylinder drives the material blocking plate to move downward and conflict with the bottom side wall of the discharge port, the material blocking plate can block the air-conditioning filter. When the material blocking cylinder drives the material blocking plate to move upward and separate from the bottom side wall of the discharge port, the air-conditioning filter can pass from under the material blocking plate.

[0018] Preferably, a mounting cross plate is provided on the silo, the mounting cross plate is located above the discharge port, a pushing cylinder is provided on the mounting cross plate, a pushing plate is provided at the output end of the pushing cylinder, and the lower end of the pushing plate extends into the inner side of the silo.

[0019] Through the above technical solution, the push plate is driven to move in the silo by the push cylinder, so that the air-conditioning filter in the silo can be moved and arranged to avoid the situation where the air-conditioning filter is stuck inside the silo.

[0020] Preferably, the push plate includes a pushing part arranged in a vertical direction, a sorting part arranged obliquely at the lower end of the pushing part, and a reinforcing part arranged between the pushing part and the sorting part, and a feeding cavity is formed between the sorting part and the inner wall of the bottom of the silo for only a single air-conditioning filter to pass through.

[0021] Through the above technical solution, when the push plate moves, the air-conditioning filter can be forced into the feeding cavity, so that the subsequent supply process of a single air-conditioning filter becomes smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an embodiment; Figure 2 It is a schematic diagram of the structure of the punch die mounting frame, the punching drive mechanism and the punch needle in the embodiment; Figure 3 It is a structural schematic diagram of the material pushing drive mechanism, the C-shaped lower die and the upper push cylinder in the embodiment; Figure 4 It is a schematic diagram of the structure of the feeding turntable, the feeding drive mechanism and the feeding push rod; Figure 5 It is a structural schematic diagram of the feeding mechanism; Figure 6 It is a schematic diagram of the structure of the silo, the pushing cylinder and the pushing plate.

[0023] Figure numerals: 1, work table; 2, die mounting frame; 3, punching drive mechanism; 4, punch needle; 5, die bottom plate; 6, lower die vertical plate; 7, C-type lower die; 8, avoidance through hole; 9, material withdrawal plate; 10, avoidance opening; 11, material withdrawal drive mechanism; 111, material withdrawal mounting shaft; 112, material withdrawal mounting plate; 113, material withdrawal cylinder; 114, material withdrawal adjustment plate; 115, adjustment mounting shaft; 12, upper cylinder; 13, turntable support frame; 14, feed turntable; 15, feed opening; 16, rotation drive mechanism; 161, servo motor; 162, driving pulley; 163, driven pulley; 164 , transmission belt; 17, feed mounting frame; 18, feed push rod; 19, feed drive mechanism; 191, feed drive cylinder; 192, feed connecting plate; 20, arc baffle; 21, loading mechanism; 211, fixed bracket; 212, silo; 213, baffle piece; 2131, mounting bracket; 2132, baffle cylinder; 2133, baffle plate; 22, unloading inclined plate; 23, mounting cross plate; 24, push cylinder; 25, push plate; 251, push part; 252, sorting part; 253, reinforcement part; 26, die upper plate; 27, die column; 28, punching cylinder; 29, punching base. DETAILED DESCRIPTION

[0024] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0025] An automatic punching machine, such as Figures 1 to 6 As shown, it includes a workbench 1, a punching die mounting frame 2 is arranged on the upper end of the workbench 1, a punching die mounting frame 2 is arranged on the punching die driving mechanism 3, and the output end of the punching drive mechanism 3 extends vertically downward and is connected to a punching needle 4.

[0026] The die mounting frame 2 includes a die upper plate 26 and a die column 27, wherein the die upper plate 26 is horizontally arranged, the die column 27 is vertically arranged, and the upper and lower ends of the die column 27 are respectively connected to the die upper plate 26 and the workbench 1. Furthermore, there are four die columns 27 and they are arranged at the four corners of the die upper plate 26.

[0027] The punching drive mechanism 3 includes a punching cylinder 28 and a punching base 29. The punching cylinder 28 is vertically mounted downward on the upper end of the die upper plate 26, and the output end of the punching cylinder 28 vertically penetrates the die upper plate 26 downward. The punching base 29 is horizontally arranged, and the punching base 29 is fixedly arranged at the output end of the punching cylinder 28. The punching needle 4 is vertically arranged downward on the lower end of the punching base 29.

[0028] A die bottom plate 5 is fixedly provided at the upper end of the workbench 1, and the die bottom plate 5 is horizontally provided. A lower die stand plate 6 is fixedly provided at the upper end of the die bottom plate 5, and the lower die stand plate 6 is vertically provided. A C-shaped lower die 7 is fixedly provided on the right side of the lower die stand plate 6, and the C-shaped lower die 7 is horizontally provided and located directly below the punching needle 4, and an avoidance through hole 8 is provided at the upper end of the C-shaped lower die 7 for the punching needle 4 to pass through.

[0029] A stripping plate 9 is movably provided on the right side of the lower mold vertical plate 6, and a avoidance opening 10 is provided at the lower end of the stripping plate 9. The stripping plate 9 is sleeved on the outer side of the C-shaped lower mold 7 through the avoidance opening 10. A stripping drive mechanism 11 is provided on the left side of the lower mold vertical plate 6, and the output end of the stripping drive mechanism 11 passes through the lower mold vertical plate 6 and is connected to the stripping plate 9, so as to drive the stripping plate 9 to move along the axial direction of the C-shaped lower mold 7.

[0030] The material-removing driving mechanism 11 comprises a material-removing mounting shaft 111, which is arranged horizontally. A material-removing mounting plate 112 is fixedly sleeved on the material-removing mounting shaft 111, which is arranged vertically. A material-removing cylinder 113 is fixedly arranged on the left side of the material-removing mounting plate 112, and the output end of the material-removing cylinder 113 passes through the material-removing mounting plate 112 and is connected to a material-removing adjusting plate 114. An adjusting mounting shaft 115 is arranged on the right side of the material-removing adjusting plate 114, and the adjusting mounting shaft 115 passes through the lower mold vertical plate 6 and is connected to the material-removing plate 9.

[0031] An upper cylinder 12 is provided at the upper end of the die bottom plate 5 , and the upper cylinder 12 is vertically arranged and located directly below the C-shaped lower die 7 .

[0032] A turntable support frame 13 is fixedly provided at the upper end of the worktable 1, and the turntable support frame 13 is located on the right side of the lower mold stand plate 6. A feed turntable 14 is rotatably provided on the turntable support frame 13, and the central axis of the feed turntable 14 is horizontally provided. A plurality of feed openings 15 are provided on the feed turntable 14 along the circumferential direction, and the feed openings 15 are expanded. A rotary drive mechanism 16 is provided on the turntable support frame 13, and the output end of the rotary drive mechanism 16 is connected to the feed turntable 14 to drive the feed turntable 14 to rotate circumferentially.

[0033] The rotating drive mechanism 16 includes a servo motor 161, and a driving pulley 162 is fixedly provided on the output end of the servo motor 161. A driven pulley 163 is rotatably provided on the right side of the turntable support frame 13. The driven pulley 163 is coaxially connected to the feeding turntable 14 through a connecting shaft, and a transmission belt 164 is tensioned between the driving pulley 162 and the driven pulley 163.

[0034] A feed mounting frame 17 is provided at the upper end of the worktable 1. The feed mounting frame 17 is located on the right side of the turntable support frame 13. A feed push rod 18 is slidably provided on the feed mounting frame 17. The feed push rod 18 is opposite to the C-shaped lower mold 7. A feed drive mechanism 19 is provided on the feed mounting frame 17. The output end of the feed drive mechanism 19 is connected to the feed push rod 18 to drive the feed push rod 18 to move axially. The feed drive mechanism 19 includes a feed drive cylinder 191. The feed drive cylinder 191 is fixedly provided on the right side of the feed mounting frame 17. The output end of the feed drive cylinder 191 passes through the feed mounting frame 17 and is connected to a feed connecting plate 192. The feed connecting plate 192 is fixedly sleeved on the outer side of the feed push rod 18. An arc baffle 20 is fixedly provided on the feed mounting frame 17. The arc baffle 20 is provided above the feed turntable 14 to cover the upper feed opening 15.

[0035] A loading mechanism 21 is disposed at the upper end of the workbench 1 . The loading mechanism 21 is located at the rear side of the feeding turntable 14 and is used to place the air-conditioning filters to be processed into the feeding opening 15 one by one.

[0036] The feeding mechanism 21 includes a fixed bracket 211, a silo 212 obliquely arranged on the fixed bracket 211, and two groups of blocking members 213 arranged at the discharge port of the silo 212 along the moving direction of the air conditioning filter. The discharge port of the silo 212 is inclined downward and toward the side of the feeding turntable 14. A single air conditioning filter can be supplied by opening and closing the two groups of blocking members 213. The blocking member 213 includes a mounting bracket 2131, a blocking cylinder 2132 arranged on the mounting bracket 2131, and a blocking plate 2133 arranged at the output end of the blocking cylinder 2132. The silo 212 is provided with a mounting cross plate 23, the mounting cross plate 23 is located above the discharge port, the mounting cross plate 23 is provided with a pushing cylinder 24, and the output end of the pushing cylinder 24 is provided with a pushing plate 25, and the lower end of the pushing plate 25 extends into the inner side of the silo 212. The push plate 25 includes a pushing portion 251 arranged in the vertical direction, a tidying portion 252 arranged obliquely at the lower end of the pushing portion 251, and a reinforcing portion 253 arranged between the pushing portion 251 and the tidying portion 252. A feeding cavity is formed between the tidying portion 252 and the inner wall of the bottom of the silo 212 for only a single air-conditioning filter to pass through.

[0037] A material unloading inclined plate 22 is provided at the upper end of the workbench 1 . The material unloading inclined plate 22 is located in front of the feeding turntable 14 and is used to deliver the processed air-conditioning filter out of the workbench 1 .

[0038] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. An automatic punching machine, characterized by: It comprises a workbench (1), the upper end of the workbench (1) is provided with a punching die mounting frame (2), the punching die mounting frame (2) is provided with a punching drive mechanism (3), the output end of the punching drive mechanism (3) extends vertically downward and is connected to a punching needle (4); A punching die bottom plate (5) is fixedly arranged at the upper end of the workbench (1), a lower die vertical plate (6) is fixedly arranged at the upper end of the punching die bottom plate (5), a C-shaped lower die (7) is fixedly arranged on the right side of the lower die vertical plate (6), the C-shaped lower die (7) is located directly below the punching needle (4), and an avoidance through hole (8) is provided at the upper end of the C-shaped lower die (7) for the punching needle (4) to pass through; A material stripping plate (9) is movably provided on the right side of the lower mold vertical plate (6), a relief opening (10) is provided at the lower end of the material stripping plate (9), and the material stripping plate (9) is sleeved on the outer side of the C-shaped lower mold (7) via the relief opening (10); a material stripping drive mechanism (11) is provided on the left side of the lower mold vertical plate (6), and an output end of the material stripping drive mechanism (11) passes through the lower mold vertical plate (6) and is connected to the material stripping plate (9) so as to drive the material stripping plate (9) to move along the axial direction of the C-shaped lower mold (7); An upper cylinder (12) is provided at the upper end of the die bottom plate (5), and the upper cylinder (12) is located directly below the C-shaped lower die (7).

2. The automatic punching machine according to claim 1, characterized in that: The material-returning driving mechanism (11) comprises a material-returning mounting shaft (111), a material-returning mounting plate (112) is fixedly sleeved on the material-returning mounting shaft (111), a material-returning cylinder (113) is fixedly arranged on the left side of the material-returning mounting plate (112), an output end of the material-returning cylinder (113) passes through the material-returning mounting plate (112) and is connected to a material-returning adjusting plate (114), an adjusting mounting shaft (115) is arranged on the right side of the material-returning adjusting plate (114), and the adjusting mounting shaft (115) passes through the lower mold vertical plate (6) and is connected to the material-returning plate (9).

3. The automatic punching machine according to claim 1, characterized in that: A turntable support frame (13) is fixedly provided at the upper end of the worktable (1), and the turntable support frame (13) is located on the right side of the lower mold stand plate (6). A feeding turntable (14) is rotatably provided on the turntable support frame (13), and a plurality of feeding openings (15) are opened on the feeding turntable (14) along the circumferential direction. A rotary drive mechanism (16) is provided on the turntable support frame (13), and an output end of the rotary drive mechanism (16) is connected to the feeding turntable (14) to drive the feeding turntable (14) to rotate circumferentially. A feed mounting frame (17) is provided at the upper end of the workbench (1), and the feed mounting frame (17) is located on the right side of the turntable support frame (13). A feed push rod (18) is slidably provided on the feed mounting frame (17), and the feed push rod (18) is opposite to the C-shaped lower mold (7) on the left and right. A feed driving mechanism (19) is provided on the feed mounting frame (17), and the output end of the feed driving mechanism (19) is connected to the feed push rod (18) to drive the feed push rod (18) to move axially. An arc-shaped baffle (20) is fixedly provided on the feed mounting frame (17), and the arc-shaped baffle (20) is provided above the feed turntable (14) to cover the feed opening (15) above. A loading mechanism (21) is provided at the upper end of the workbench (1), and the loading mechanism (21) is located at the rear side of the feeding turntable (14) and is used to place the air-conditioning filters to be processed into the feeding opening (15) one by one; The upper end of the workbench (1) is provided with a material unloading inclined plate (22), and the material unloading inclined plate (22) is located in front of the feeding turntable (14) and is used to deliver the processed air-conditioning filter out of the workbench (1).

4. The automatic punching machine according to claim 3, characterized in that: The rotary drive mechanism (16) comprises a servo motor (161), the output end of the servo motor (161) is fixedly sleeved with a driving pulley (162), the right side of the turntable support frame (13) is rotatably provided with a driven pulley (163), the driven pulley (163) is coaxially connected to the feeding turntable (14) via a connecting shaft, and a transmission belt (164) is tensioned between the driving pulley (162) and the driven pulley (163).

5. The automatic punching machine according to claim 3, characterized in that: The feed drive mechanism (19) comprises a feed drive cylinder (191), the feed drive cylinder (191) is fixedly arranged on the right side of the feed mounting frame (17), the output end of the feed drive cylinder (191) passes through the feed mounting frame (17) and is connected to a feed connecting plate (192), and the feed connecting plate (192) is fixedly sleeved on the outer side of the feed push rod (18).

6. The automatic punching machine according to claim 3, characterized in that: The feeding mechanism (21) comprises a fixed bracket (211), a material bin (212) obliquely arranged on the fixed bracket (211), and two groups of material blocking members (213) arranged at a material outlet of the material bin (212) along a moving direction of the air-conditioning filter, the material outlet of the material bin (212) being inclined downward and facing one side of the feeding turntable (14), and a single air-conditioning filter can be supplied by opening and closing the two groups of material blocking members (213).

7. An automatic punching machine according to claim 6, characterized in that: The material blocking member (213) comprises a mounting bracket (2131), a material blocking cylinder (2132) arranged on the mounting bracket (2131), and a material blocking plate (2133) arranged at the output end of the material blocking cylinder (2132).

8. The automatic punching machine according to claim 6, characterized in that: The silo (212) is provided with a mounting transverse plate (23), the mounting transverse plate (23) is located above the discharge port, a pushing cylinder (24) is provided on the mounting transverse plate (23), a pushing plate (25) is provided at the output end of the pushing cylinder (24), and the lower end of the pushing plate (25) extends into the inner side of the silo (212).

9. The automatic punching machine according to claim 8, characterized in that: The push plate (25) comprises a pushing portion (251) arranged in a vertical direction, a arranging portion (252) arranged obliquely at the lower end of the pushing portion (251), and a reinforcing portion (253) arranged between the pushing portion (251) and the arranging portion (252); a feeding cavity for only a single air-conditioning filter to pass through is formed between the arranging portion (252) and the inner wall of the bottom of the silo (212).

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