Perforating device for valve bag production

Abstract

The utility model relates to the technical field of punching devices, and discloses a punching device for valve bag production, which comprises a workbench, one end of the upper part of the workbench is fixedly connected with a support frame, the other end of the support frame is fixedly provided with a punching cylinder, one end of the punching cylinder penetrates through the support frame and is fixedly connected with the support frame, and the other end of the punching cylinder is fixedly connected with the punching cylinder. The valve bag punching device comprises a workbench, a punching air cylinder is arranged on the workbench, the output end of the punching air cylinder is connected with a punching tool in a clamped mode, a pre-pressing mechanism is arranged below the punching tool, and a first sliding frame is arranged above the workbench. And under the action of the spring, the pressing ring can be pushed to make contact with the valve bag on the fixing block in advance and fix the valve bag, when the punching tool continuously presses downwards, the spring can be compressed till punching of the valve bag by the punching tool is completed, and the problem that an existing device is insufficient in practicability is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to punch device technical field, especially valve port bag production uses punch device. BACKGROUND

[0002] Valve port bag, commonly known as paste bottom bag, is an internationally popular packaging bag, mainly used for feeding from the top or bottom valve port, filling with special filling equipment, usually producing in processing valve port bag needs a punch device to carry out punching processing to valve port bag, so as to facilitate subsequent production and sale.

[0003] Through the retrieval, China patent discloses a kind of valve port bag punch device, (grant announcement number: CN216708542U), including device shell, support platform, position adjusting structure, driving structure and punch structure, the device shell is the cavity structure of front end opening, the device shell side wall is equipped with motor protection shell, the support platform is located in device shell, the driving structure is located in motor protection shell, the position adjusting structure is located in device shell, the position adjusting structure is connected with driving structure, the punch structure is located on position adjusting structure.The utility model relates to valve port bag processing technical field, specifically provides a kind of valve port bag punch device with reasonable structure, simple, with punch position adjusting function, can have good compacting to valve port bag, while facilitating the dismounting cutter.

[0004] The patent technology can punch valve port bag in actual application process, so as to facilitate subsequent use, but lacks the mechanism for accurately fixing the position of valve port bag in the above scheme during use, so the position of valve port bag needs to be manually calibrated by staff, but the accuracy of manual calibration is far from enough, so it will cause the position of valve port bag to be punched to be deviated, and two compacting cylinders are needed in the above scheme to stably compact valve port bag, and the cost of compacting cylinder is higher, and starting two compacting cylinders will also cause energy consumption, so the practicability of the device is greatly reduced. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art, and provides a kind of valve port bag production punch device.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The utility model provides a kind of punching device for valve port bag production, including workbench, the upper end of the workbench is fixedly connected with support frame, the other end of the support frame is fixedly provided with stamping cylinder, one end of the stamping cylinder penetrates support frame and is fixedly connected with it, punching tool is clamped to the output end of the stamping cylinder, the lower side of the punching tool is provided with pre-press mechanism, the upper side of the workbench is provided with first sliding frame, the upper side of the first sliding frame is provided with second sliding frame, the upper side both ends of the second sliding frame are provided with fixed mechanism and flattening mechanism, the upper side of the workbench is fixedly connected with fixed block, the fixed block is arranged in the inboard of first sliding frame, air pressure hole is opened in the upper side of the fixed block, the air pressure hole penetrates fixed block and workbench and is communicated with the lower side of workbench, the air pressure hole corresponds between punching tool, the lower side both sides of the first sliding frame, the lower side both sides of the second sliding frame, the lower side both ends of fixed mechanism and the lower side both ends of flattening mechanism are fixedly connected with T-shaped sliding block, the upper side both sides of the workbench, the upper side both ends of the first sliding frame and the upper side both sides of the second sliding frame are provided with T-shaped sliding slot, the T-shaped sliding block of the lower side of the first sliding frame is slidably connected between the T-shaped sliding slot in the upper side of the workbench and the workbench, the T-shaped sliding block of the lower side of the second sliding frame is slidably connected between the T-shaped sliding slot in the upper side of the first sliding frame and the first sliding frame.

[0008] The pre-press mechanism includes a compression ring, a connecting plate, a sliding rod, and a spring, the compression ring is arranged below the punching tool, the connecting plate is arranged on both sides of the output end of the stamping cylinder, the sliding rod is arranged on both ends of the compression ring, the other end of the two sliding rods is respectively penetrated through the two connecting plates and is slidably connected therewith, and the spring is arranged between the compression ring and the connecting plate.

[0009] Preferably, the fixed mechanism includes a U-shaped frame, a fixed plate, a threaded rod, and a limiting rod, the T-shaped sliding block below the fixed mechanism is fixedly connected to the lower ends of the U-shaped frame, the T-shaped sliding block below the U-shaped frame is slidably connected between the T-shaped sliding slot in the upper side of the second sliding frame and the second sliding frame, the fixed plate is arranged inside the U-shaped frame, the threaded rod is arranged above the U-shaped frame, one end of the threaded rod penetrates the U-shaped frame and is threadedly connected therewith, the threaded rod is rotatably connected between one end and the fixed plate, and the limiting rod is arranged on both ends of the fixed plate and is slidably connected to the U-shaped frame.

[0010] Preferably, the smoothing mechanism comprises a U-shaped frame, a smoothing plate, a pull rod, a pull-back spring and a guide rod, the T-shaped slide blocks below the smoothing mechanism are fixedly connected to the lower ends of the U-shaped frame, the T-shaped slide blocks below the U-shaped frame are slidably connected between the second sliding frame and the T-shaped slide grooves above the second sliding frame, the smoothing plate is arranged on the inner side of the U-shaped frame, the pull rod is slidably connected above the U-shaped frame, one end of the pull rod penetrates through the U-shaped frame and is fixedly connected with the smoothing plate, the pull-back spring is arranged between the U-shaped frame and the pull rod, the pull-back spring is sleeved on the pull rod, and the guide rods are arranged in two and are fixedly connected to the upper ends of the smoothing plate respectively, and the two guide rods penetrate through the U-shaped frame and are slidably connected with the U-shaped frame.

[0011] Preferably, the other end of the first sliding frame, the upper end of the second sliding frame and the upper ends of the U-shaped frame are all provided with fixed screw rods, the fixed screw rods are arranged as punching cylinders and are in threaded connection with the first sliding frame, the second sliding frame and the U-shaped frame respectively.

[0012] Preferably, one end of each of the three fixed screw rods is provided with an anti-skid pad, and the anti-skid pad is fixedly connected with the fixed screw rod.

[0013] Preferably, the upper side of the workbench, the upper end of the first sliding frame, the upper side of the second sliding frame and the inner side below the U-shaped frame are all provided with scales.

[0014] The utility model has the advantages of the following beneficial effects:

[0015] 1. In the utility model, when the punching device is started, the punching tool is used to punch the valve pocket, and the spring is used to push the compression ring to contact and fix the valve pocket on the fixed block in advance, when the punching tool is continuously pressed down, the spring is compressed, and the punching of the valve pocket by the punching tool is completed, thereby solving the problem of poor practicability of the device.

[0016] 2. In the utility model, the one end of the valve pocket is fixed on the inner side of the U-shaped frame by rotating the threaded rod to push the fixed plate to move, the other end of the valve pocket is pulled through the U-shaped frame by pulling the pull rod to overcome the force of the pull-back spring and drive the smoothing plate to move upwards, the pull rod is pulled back under the action of the pull-back spring to make the smoothing plate pre-press the valve pocket, the valve pocket is smoothed by pushing the U-shaped frame to move, and the valve pocket is moved in multiple directions on the workbench by pushing the first sliding frame and the second sliding frame respectively, thereby facilitating the staff to punch the valve pocket, and solving the problem of poor use effect of the device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic view of the punching device in the utility model.

[0018] Figure 2 It is the connection structure schematic view of the workbench, the first sliding frame and the second sliding frame in the utility model.

[0019] Figure 3 It is the connection structure schematic view of the fixing mechanism and the smoothing mechanism in the utility model.

[0020] Figure 4 It is the connection structure schematic view of the pre-pressing mechanism in the utility model.

[0021] Figure 5 It is the connection structure schematic view of the second sliding frame, the fixing mechanism and the smoothing mechanism in the utility model.

[0022] Figure 6 It is the connection structure schematic view of the fixing mechanism in the utility model.

[0023] Figure 7 It is the connection structure schematic view of the smoothing mechanism in the utility model.

[0024] Figure 8 It is the connection structure schematic view of the Figure 2 It is the structure schematic view of A place in the utility model.

[0025] Figure 9 It is the connection cross section structure schematic view of the air pressure hole and the workbench in the utility model.

[0026] Legend:

[0027] 1, workbench; 2, support frame; 3, stamping cylinder; 4, punching tool; 5, pre-pressing mechanism; 51, pressing ring; 52, connecting plate; 53, sliding rod; 54, spring; 6, first sliding frame; 7, second sliding frame; 8, fixing mechanism; 81, U-shaped frame; 82, fixed plate; 83, threaded rod; 84, limiting rod; 9, smoothing mechanism; 91, back-shaped frame; 92, smoothing plate; 93, pull rod; 94, back-pulling spring; 95, guide rod; 10, fixed block; 11, air pressure hole; 12, T-shaped sliding block; 13, T-shaped sliding groove; 14, fixed screw; 15, non-slip pad; 16, scale. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] Refer to Figures 1-9The utility model provides an embodiment: a kind of punching device for valve bag production, including workbench 1, the upper end of workbench 1 is fixedly connected with support frame 2, the other end of support frame 2 is fixedly provided with stamping cylinder 3, support frame 2 is used to fix stamping cylinder 3, one end of stamping cylinder 3 penetrates support frame 2 and is fixedly connected, stamping cylinder 3 is clamped with punching tool 4 in output end, stamping cylinder 3 is used to push punching tool 4 to move, punching tool 4 is used to carry out punching to valve bag, the lower side of punching tool 4 is provided with pre-press mechanism 5, the upper side of workbench 1 is provided with first sliding frame 6, the upper side of first sliding frame 6 is provided with second sliding frame 7, the upper side both ends of second sliding frame 7 are provided with fixed mechanism 8 and flattening mechanism 9, the upper side of workbench 1 is fixedly connected with fixed block 10, fixed block 10 is arranged in the inboard of first sliding frame 6, air pressure hole 11 is opened in the upper side of fixed block 10, air pressure hole 11 penetrates fixed block 10 and workbench 1 and is connected with the lower side of workbench 1, air pressure hole 11 corresponds between punching tool 4, the lower side both sides of first sliding frame 6, the lower side both sides of second sliding frame 7, the lower side both ends of fixed mechanism 8 and the lower side both ends of flattening mechanism 9 are fixedly connected with T-shaped sliding block 12, the upper side both sides of workbench 1, the upper side both ends of first sliding frame 6 and the upper side both sides of second sliding frame 7 are provided with T-shaped sliding groove 13, the T-shaped sliding block 12 below first sliding frame 6 is slidably connected between the T-shaped sliding groove 13 above workbench 1 and workbench 1, the T-shaped sliding block 12 below second sliding frame 7 is slidably connected between the T-shaped sliding groove 13 above first sliding frame 6 and first sliding frame 6.

[0030] Pre-press mechanism 5 includes pressing ring 51, connecting plate 52, sliding rod 53 and spring 54, pressing ring 51 is arranged below punching tool 4, connecting plate 52 is arranged two and is fixedly connected on the both sides of the output end of stamping cylinder 3 respectively, sliding rod 53 is arranged two and is fixedly connected on the both ends of pressing ring 51 respectively, the other end of two sliding rods 53 is respectively penetrated two connecting plates 52 and is slidably connected, spring 54 is arranged two and is respectively arranged between pressing ring 51 and connecting plate 52, two springs 54 are respectively set on sliding rod 53.

[0031] Through the above technical scheme, by setting pre-press mechanism 5, by starting stamping cylinder 3 to push punching tool 4 to punch valve bag, under the action of spring 54, pressing ring 51 can be pushed to contact valve bag on fixed block 10 in advance and fix it, when punching tool 4 continuously presses down, spring 54 will be compressed, until punching tool 4 finishes punching valve bag.

[0032] Specifically, the fixing mechanism 8 comprises a U-shaped frame 81, a fixing plate 82, a threaded rod 83 and a limiting rod 84, the T-shaped sliding blocks 12 below the fixing mechanism 8 are fixedly connected to the lower two ends of the U-shaped frame 81, the T-shaped sliding blocks 12 below the U-shaped frame 81 are slidably connected between the T-shaped sliding grooves 13 above the second sliding frame 7 and the second sliding frame 7, the fixing plate 82 is arranged on the inner side of the U-shaped frame 81, the threaded rod 83 is arranged above the U-shaped frame 81, one end of the threaded rod 83 penetrates through the U-shaped frame 81 and is threadedly connected thereto, one end of the threaded rod 83 is rotatably connected to the fixing plate 82, and the limiting rods 84 are arranged as two and are fixedly connected to the upper two ends of the fixing plate 82, respectively, and the two limiting rods 84 penetrate through the U-shaped frame 81 and are slidably connected thereto.

[0033] Through the above technical scheme, by arranging the fixing mechanism 8, by placing one end of the valve bag on the inner side of the U-shaped frame 81, and by rotating the threaded rod 83 to push the fixing plate 82 to move, the valve bag can be fixed.

[0034] Specifically, the smoothing mechanism 9 comprises a back-shaped frame 91, a smoothing plate 92, a pull rod 93, a back-pulling spring 94 and a guide rod 95, the T-shaped sliding blocks 12 below the smoothing mechanism 9 are fixedly connected to the lower two ends of the back-shaped frame 91, the T-shaped sliding blocks 12 below the back-shaped frame 91 are slidably connected between the T-shaped sliding grooves 13 above the second sliding frame 7 and the second sliding frame 7, the smoothing plate 92 is arranged on the inner side of the back-shaped frame 91, the pull rod 93 is slidably connected above the back-shaped frame 91, one end of the pull rod 93 penetrates through the back-shaped frame 91 and is fixedly connected to the smoothing plate 92, the back-pulling spring 94 is arranged between the back-shaped frame 91 and the pull rod 93, the back-pulling spring 94 is sleeved on the pull rod 93, and the guide rods 95 are arranged as two and are fixedly connected to the upper two ends of the smoothing plate 92, respectively, and the two guide rods 95 penetrate through the back-shaped frame 91 and are slidably connected thereto.

[0035] Through the above technical scheme, by arranging the smoothing mechanism 9, by pulling the pull rod 93 to overcome the action force of the back-pulling spring 94 to drive the smoothing plate 92 to move upward, the other end of the valve bag can pass through the back-shaped frame 91, by loosening the pull rod 93, the pull rod 93 can be pulled back under the action force of the back-pulling spring 94, the smoothing plate 92 can pre-press the valve bag, and by pushing the back-shaped frame 91 to move, the valve bag can be smoothed.

[0036] Specifically, the other end side of the first sliding frame 6, the upper other end of the second sliding frame 7 and the upper two ends of the U-shaped frame 81 are each provided with a fixed screw rod 14, the fixed screw rods 14 are arranged as three stamping air cylinders and are threadedly connected to the first sliding frame 6, the second sliding frame 7 and the U-shaped frame 81, respectively.

[0037] Through the technical scheme, the position of the first sliding frame 6 is fixed by rotating the fixing screw 14 on the first sliding frame 6 to make one end of the fixing screw 14 abut against the workbench 1, the position of the second sliding frame 7 is fixed by rotating the fixing screw 14 on the second sliding frame 7 to make one end of the fixing screw 14 abut against the first sliding frame 6, and the position of the U-shaped frame 81 is fixed by rotating the fixing screw 14 on the U-shaped frame 81 to make one end of the fixing screw 14 abut against the second sliding frame 7.

[0038] Specifically, one end of each of the three fixing screws 14 is provided with an antiskid pad 15, and the antiskid pad 15 is fixedly connected with the fixing screw 14.

[0039] Through the technical scheme, the antiskid pad 15 is arranged to prevent slipping, so that the fixing of the positions of the first sliding frame 6, the second sliding frame 7 and the U-shaped frame 81 by the fixing screw 14 is more firm.

[0040] Specifically, the upper side of the workbench 1, the upper side of the other end of the first sliding frame 6, the upper side of the second sliding frame 7 and the inner side of the lower side of the U-shaped frame 81 are each provided with a scale 16.

[0041] Through the technical scheme, the scale 16 is arranged to facilitate accurate movement of the first sliding frame 6, the second sliding frame 7 or the fixing mechanism 8 and the smoothing mechanism 9 according to the scale 16.

[0042] Working principle: in use, first, the one end of the valve bag is placed in the inner side of the U-shaped frame 81 and according to the scale 16 on the U-shaped frame 81, the one end of the valve bag is placed in the middle position of the scale 16, at the same time, the edge of the one end of the U-shaped frame 81 is in contact with the inner side wall of the U-shaped frame 81, then the flattening plate 92 is lifted by pulling the pull rod 93 against the force of the return spring 94, then the other end of the valve bag is inserted through the back-shaped frame 91, and the back-shaped frame 91 is pushed close to the U-shaped frame 81, then the pull rod 93 is pulled back under the action of the return spring 94, so that the flattening plate 92 can pre-press the valve bag, and the valve bag can be flattened by moving the back-shaped frame 91, until the flattening plate 92 is pressed to the edge of the other end of the valve bag, then when the side of the back-shaped frame 91 is not parallel to the one end of the second sliding frame 7, the valve bag on the U-shaped frame 81 and the back-shaped frame 91 can be moved to the longitudinal middle position of the second sliding frame 7 according to the scale 16 on the side above the second sliding frame 7, then the position of the U-shaped frame 81 is fixed by rotating the fixed screw rod 14 at one end of the U-shaped frame 81, then according to the requirement of the punching position of the valve bag, the position of the valve bag on the workbench 1 is adjusted by pushing the first sliding frame 6 and the second sliding frame 7, so as to control the punching position of the valve bag, for example, the punching position of the valve bag is 10 cm downward and 10 cm left of the center point of the valve bag, the first sliding frame 6 can be moved 10 cm upward according to the scale 16 on the workbench 1 by pushing the first sliding frame 6, then the first sliding frame 6 is fixed by rotating the fixed screw rod 14 on the first sliding frame 6, then the first sliding frame 6 is moved 10 cm right by pushing the second sliding frame 7 according to the scale 16 on the workbench 1, then the second sliding frame 7 is fixed by rotating the fixed screw rod 14 on the first sliding frame 6, then the valve bag can be punched by starting the punching cylinder 3 to push the punching tool 4, because the factory will not produce only one valve bag, so the position of the first sliding frame 6, the second sliding frame 7 and the limiting rod 84 can be fixed by the fixed screw rod 14, which can facilitate the staff to use multiple valve bags for punching, when the first valve bag is punched, the valve bag is fixed by the fixing mechanism 8, and the valve bag is flattened by the flattening mechanism 9, so that the valve bag can be punched, and when the flattening mechanism 9 flattens the valve bag, the position of the flattening mechanism 9 exceeds the punching position of the valve bag, so that the valve bag can be punched without moving the flattening mechanism 9 to the edge of the other end of the valve bag.

[0043] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A punching device for valve port bag production comprising a worktable (1), characterized in that: The upper end of the workbench (1) is fixedly connected with a support frame (2), the other end of the support frame (2) is fixedly provided with a punching cylinder (3), one end of the punching cylinder (3) penetrates through the support frame (2) and is fixedly connected therewith, the output end of the punching cylinder (3) is clamped with a punching tool (4), the lower side of the punching tool (4) is provided with a pre-pressing mechanism (5), the upper side of the workbench (1) is provided with a first sliding frame (6), the upper side of the first sliding frame (6) is provided with a second sliding frame (7), the upper two ends of the second sliding frame (7) are provided with a fixing mechanism (8) and a flattening mechanism (9), the upper side of the workbench (1) is fixedly connected with a fixed block (10), the fixed block (10) is arranged on the inner side of the first sliding frame (6), the upper side of the fixed block (10) is provided with an air pressure hole (11), the air pressure hole (11) penetrates through the fixed block (10) and the workbench (1) and is in communication with the lower side of the workbench (1), the air pressure hole (11) corresponds to the punching tool (4), the lower sides of the first sliding frame (6), the lower sides of the second sliding frame (7), the lower two ends of the fixing mechanism (8) and the lower two ends of the flattening mechanism (9) are fixedly connected with T-shaped sliding blocks (12), the upper sides of the workbench (1), the upper two ends of the first sliding frame (6) and the upper two sides of the second sliding frame (7) are provided with T-shaped sliding grooves (13), the T-shaped sliding blocks (12) below the first sliding frame (6) are slidingly connected between the T-shaped sliding grooves (13) above the workbench (1) and the workbench (1), the T-shaped sliding blocks (12) below the second sliding frame (7) are slidingly connected between the T-shaped sliding grooves (13) above the first sliding frame (6) and the first sliding frame (6); The pre-pressing mechanism (5) comprises a pressing ring (51), a connecting plate (52), a sliding rod (53) and a spring (54), the pressing ring (51) is arranged below the punching tool (4), the connecting plate (52) is arranged in two and is fixedly connected on the two sides of the output end of the punching cylinder (3), the sliding rod (53) is arranged in two and is fixedly connected on the two ends of the pressing ring (51), the other ends of the two sliding rods (53) penetrate through the two connecting plates (52) and are slidingly connected therewith, the spring (54) is arranged in two and is arranged between the pressing ring (51) and the connecting plate (52), the two springs (54) are sleeved on the sliding rod (53).

2. The punching device for valve port bag production according to claim 1, characterized in that: The fixing mechanism (8) comprises a U-shaped frame (81), a fixing plate (82), a threaded rod (83) and a limiting rod (84), the T-shaped sliding blocks (12) below the fixing mechanism (8) are fixedly connected to the lower two ends of the U-shaped frame (81), the T-shaped sliding blocks (12) below the U-shaped frame (81) are slidably connected between the T-shaped sliding grooves (13) above the second sliding frame (7) and the second sliding frame (7), the fixing plate (82) is arranged on the inner side of the U-shaped frame (81), the threaded rod (83) is arranged above the U-shaped frame (81), one end of the threaded rod (83) penetrates through the U-shaped frame (81) and is threadedly connected therewith, one end of the threaded rod (83) is rotatably connected with the fixing plate (82), and the limiting rods (84) are arranged as two and are fixedly connected to the upper two ends of the fixing plate (82), and the two limiting rods (84) penetrate through the U-shaped frame (81) and are slidably connected therewith.

3. The punching device for valve port bag production according to claim 1, characterized in that: The smoothing mechanism (9) comprises a back-shaped frame (91), a smoothing plate (92), a pull rod (93), a back-pulling spring (94) and a guide rod (95), the T-shaped sliding blocks (12) below the smoothing mechanism (9) are fixedly connected to the lower two ends of the back-shaped frame (91), the T-shaped sliding blocks (12) below the back-shaped frame (91) are slidably connected between the T-shaped sliding grooves (13) above the second sliding frame (7) and the second sliding frame (7), the smoothing plate (92) is arranged on the inner side of the back-shaped frame (91), the pull rod (93) is slidably connected above the back-shaped frame (91), one end of the pull rod (93) penetrates through the back-shaped frame (91) and is fixedly connected with the smoothing plate (92) thereof, the back-pulling spring (94) is arranged between the back-shaped frame (91) and the pull rod (93), the back-pulling spring (94) is sleeved on the pull rod (93), and the guide rods (95) are arranged as two and are fixedly connected to the upper two ends of the smoothing plate (92), and the two guide rods (95) penetrate through the back-shaped frame (91) and are slidably connected therewith.

4. The punching device for valve port bag production according to claim 1, characterized in that: The other end side of the first sliding frame (6), the upper other end of the second sliding frame (7) and the upper two ends of the U-shaped frame (81) are all provided with fixed screw rods (14), and the fixed screw rods (14) are arranged as stamping air cylinders (3) and penetrate through the first sliding frame (6), the second sliding frame (7) and the U-shaped frame (81) and are threadedly connected therewith.

5. The valve bag perforating device of claim 4, wherein: One end of each of the three fixed screw rods (14) is provided with an anti-skid pad (15), and the anti-skid pad (15) is fixedly connected with the fixed screw rod (14).

6. The valve bag perforating device of claim 1, wherein: The upper side of the workbench (1), the upper other end of the first sliding frame (6), the upper side of the second sliding frame (7) and the inner lower side of the U-shaped frame (81) are all provided with scales (16).

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