Eight-edge-sealed flat-bottom bag cutting device

Abstract

The utility model discloses an eight-edge sealing flat-bottom bag cutting device, which relates to the technical field of cutting devices and comprises a conveying frame, a first portal frame is fixedly mounted on the top surface of the conveying frame, a plurality of electric push rods are symmetrically mounted on the top surface of the first portal frame, and a mounting plate is jointly mounted at the bottom ends of the electric push rods. A mounting plate is fixedly mounted on the top surface of the conveying frame, a cutting tool is mounted on the bottom surface of the mounting plate, a plurality of pressing plates are symmetrically, elastically and slidably connected to the bottom surface of the mounting plate, a second portal frame is fixedly mounted on the top surface of the conveying frame, and an assembly seat is slidably connected into the second portal frame. Through cooperation of the two connecting rods, the rollers repeatedly flatten the bag, then wrinkles of the bag can be flattened, the flatness is improved, the bag can be prevented from deviating during cutting, and then the cutting precision is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of cutting device technology, and in particular to an eight-side sealed flat bottom bag cutting device. Background Technology

[0002] Eight-side seal flat bottom bags are a common type of packaging bag. They are characterized by a flat bottom and heat-sealed edges (top, bottom, and sides) forming eight sealed sides. These bags are typically used for packaging food, daily necessities, and industrial products, offering excellent sealing, stability, and a smooth appearance. However, during production, the sealing process may introduce slight errors or excess material at the edges, necessitating trimming.

[0003] Eight-side seal flat bottom bags are typically cut by a shearing tool after being smoothly conveyed by a conveyor belt to a cutting area. However, during the heat sealing process, factors such as heat sealing temperature and pressure can cause uneven stress inside the bag. When the bag is subjected to external forces during transport, these stresses will redistribute, causing wrinkles on the bag surface and affecting the cutting accuracy. Therefore, this application proposes an eight-side seal flat bottom bag cutting device. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an eight-side sealed flat bottom bag cutting device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An eight-side sealed flat-bottom bag cutting device includes a conveyor frame. A first gantry frame is fixedly installed on the top surface of the conveyor frame. Multiple electric push rods are symmetrically installed on the top surface of the first gantry frame. A mounting plate is installed at the bottom end of the multiple electric push rods. A cutting tool is installed on the bottom surface of the mounting plate. Multiple pressure plates are symmetrically and elastically slidably connected to the bottom surface of the mounting plate. A second gantry frame is fixedly installed on the top surface of the conveyor frame. An assembly seat is slidably connected inside the second gantry frame. The second gantry frame drives the assembly seat to slide up and down reciprocally through a reciprocating mechanism. Two moving blocks are symmetrically and elastically slidably connected inside the assembly seat. A connecting rod is rotatably connected inside each moving block, and the two connecting rods are hinged. A roller is rotatably connected to the bottom end of each connecting rod.

[0007] Preferably, the reciprocating mechanism includes a reciprocating lead screw, which is rotatably connected to the bottom surface of the second gantry frame. A lead screw sleeve is fixedly installed on the outer side of the mounting base, and the mounting base is threadedly connected to the lead screw sleeve. A motor is fixedly installed on the top surface of the second gantry frame, and the output shaft of the motor is connected to the reciprocating lead screw.

[0008] Preferably, a slide rod is fixedly installed inside the assembly base. Multiple guide grooves are symmetrically opened on the slide rod, and each moving block passes through the slide rod and is slidably connected to the guide groove. A return spring is installed on one side of each moving block and the inner side of the assembly base.

[0009] Preferably, a plurality of spring telescopic rods are symmetrically installed on the bottom surface of the mounting plate, and the bottom end of each spring telescopic rod is fixedly connected to the top surface of the pressure plate corresponding to its position.

[0010] Preferably, a guide rod is fixedly installed on the bottom surface of the second gantry frame, and the guide rod is slidably connected to the assembly base.

[0011] Preferably, a fixing plate is fixedly installed on both inner sides of the second gantry frame, and the bottom ends of the guide rod and the reciprocating screw are rotatably connected to the top surface of the fixing plate corresponding to the position.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model, through a reciprocating mechanism, assembly seat, moving block, connecting rod, rollers and other devices, enables the bag to slide up and down repeatedly during transportation by driving the assembly seat through the reciprocating mechanism. In turn, the rollers repeatedly flatten the bag through the cooperation of the two connecting rods, thereby smoothing out the wrinkles of the bag, improving its flatness, and ensuring the accuracy of cutting.

[0014] 2. This utility model, through devices such as a cutting blade, a spring telescopic rod, and a pressure plate, enables the pressure plate to limit and fix the bag when the cutting blade cuts the bag, thereby preventing the bag from deviating and improving cutting accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an eight-side sealed flat bottom bag cutting device proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the pressure plate installation structure of an eight-side sealed flat bottom bag cutting device proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the reciprocating mechanism of an eight-side-sealed flat-bottom bag cutting device proposed in this utility model;

[0018] Figure 4 for Figure 3 Enlarged view of point A.

[0019] In the diagram: 1. Conveyor frame; 2. First gantry frame; 3. Second gantry frame; 4. Electric push rod; 5. Mounting plate; 6. Cutting tool; 7. Spring telescopic rod; 8. Pressure plate; 9. Motor; 10. Fixing plate; 11. Reciprocating screw; 12. Guide rod; 13. Assembly base; 14. Moving block; 15. Connecting rod; 16. Roller; 17. Slide rod; 18. Guide groove; 19. Return spring; 20. Screw sleeve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] This utility model provides a technical solution: such as Figure 1-4 As shown, an eight-side sealed flat-bottom bag cutting device includes a conveyor frame 1. A first gantry frame 2 is fixedly installed on the top surface of the conveyor frame 1. Multiple electric push rods 4 are symmetrically installed on the top surface of the first gantry frame 2. A mounting plate 5 is installed at the bottom end of the multiple electric push rods 4. A cutting blade 6 is installed on the bottom surface of the mounting plate 5. Multiple pressure plates 8 are symmetrically and elastically slidably connected to the bottom surface of the mounting plate 5. A second gantry frame 3 is fixedly installed on the top surface of the conveyor frame 1. An assembly seat 13 is slidably connected inside the second gantry frame 3. The second gantry frame 3 drives the assembly seat 13 to slide up and down reciprocally through a reciprocating mechanism. Two moving blocks 14 are symmetrically and elastically slidably connected inside the assembly seat 13. A connecting rod 15 is rotatably connected inside each moving block 14, and the two connecting rods 15 are hinged. A roller 16 is rotatably connected to the bottom end of each connecting rod 15.

[0022] The pressure plate 8 can limit the bag when the cutting tool 6 cuts the bag, so as to prevent the bag from deviating and affecting the cutting accuracy. The reciprocating mechanism drives the assembly seat 13 to slide back and forth. When the roller 16 comes into contact with the bag, the roller 16 can slide outward to smooth the wrinkles of the bag.

[0023] Furthermore, the reciprocating mechanism includes a reciprocating lead screw 11, which is rotatably connected to the bottom surface of the second gantry 3. A lead screw sleeve 20 is fixedly installed on the outer side of the mounting base 13, and the mounting base 13 is threadedly connected to the lead screw sleeve 20. A motor 9 is fixedly installed on the top surface of the second gantry 3, and the output shaft of the motor 9 is connected to the reciprocating lead screw 11. The reciprocating lead screw 11 drives the mounting base 13 to slide up and down.

[0024] Furthermore, a slide rod 17 is fixedly installed inside the assembly base 13. Multiple guide grooves 18 are symmetrically opened on the slide rod 17, and each moving block 14 passes through the slide rod 17 and is slidably connected to the guide groove 18. A return spring 19 is installed on one side of each moving block 14 and the inner side of the assembly base 13. The return spring 19 facilitates the resetting of the moving block 14, which is convenient for smoothing out the wrinkles of the next bag.

[0025] Furthermore, multiple spring telescopic rods 7 are symmetrically installed on the bottom surface of the mounting plate 5, and the bottom end of each spring telescopic rod 7 is fixedly connected to the top surface of the pressure plate 8 corresponding to the position.

[0026] Furthermore, a guide rod 12 is fixedly installed on the bottom surface of the second gantry 3, and the guide rod 12 is slidably connected to the assembly base 13 to guide and limit the assembly base 13 so that it cannot rotate.

[0027] Furthermore, fixing plates 10 are fixedly installed on both inner sides of the second gantry 3, and the bottom ends of the guide rod 12 and the reciprocating screw 11 are rotatably connected to the top surface of the fixing plate 10 corresponding to the position, thereby enhancing the stability of the installation of the reciprocating screw 11 and the guide rod 12 through the fixing plates 10.

[0028] This utility model provides an eight-side seal flat bottom bag cutting device. The specific working principle is as follows: First, the bag is conveyed on the top surface of the conveyor frame 1 by external equipment. Then, the motor 9 mounted on the top surface of the second gantry frame 3 drives the reciprocating screw 11 to rotate. Through the cooperation of the reciprocating screw 11, screw sleeve 20, and guide rod 12, the assembly seat 13 slides downwards. When the roller 16 contacts the bag, as the assembly seat 13 continues to slide downwards, the roller 16 abuts against the bag. Furthermore, through the cooperation of the moving block 14 and connecting rod 15, the two connecting rods 15 rotate around the hinge point. This pushes the two moving blocks 14 to slide outwards and compresses the corresponding return springs 19. Then, as the mounting base 13 continues to slide, the two rollers 16 squeeze the bag along the middle of the bag and roll outwards to smooth out the wrinkles on the bag. Then, as the reciprocating screw 11 continues to rotate, the mounting base 13 slides upwards. At this time, the mounting base 13 is driven to slide upwards, and then the two moving blocks 14 move closer to each other with the cooperation of the return springs 19, which pushes the two rollers 16 to rotate inwards again, and then applies pressure again to the smoothed wrinkles of the bag to improve the flatness of the bag.

[0029] Next, the smoothed bag is moved to the bottom of the first gantry 2 and the mounting plate 5 is driven down by the electric push rod 4, so that the bag is cut by the cutting blade 6. During the cutting process, the pressure plate 8 is driven by the spring telescopic rod 7 to squeeze and limit the bag, thereby ensuring the cutting accuracy and preventing the bag from deviating.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cutting device for eight-sided gusseted flat bottom bags, comprising a conveyor frame (1), characterized in that, The top surface of the conveying frame (1) is fixedly provided with a first gantry (2), the top surface of the first gantry (2) is symmetrically provided with a plurality of electric push rods (4), the bottom ends of the plurality of electric push rods (4) are commonly provided with a mounting plate (5), the bottom surface of the mounting plate (5) is provided with a cutting tool (6), the bottom surface of the mounting plate (5) is symmetrically and elastically slidably connected with a plurality of pressing plates (8), the top surface of the conveying frame (1) is fixedly provided with a second gantry (3), the second gantry (3) is slidably connected with an assembling seat (13), the second gantry (3) drives the assembling seat (13) to reciprocatingly slide up and down through a reciprocating mechanism, the assembling seat (13) is symmetrically and elastically slidably connected with two moving blocks (14) inside, each moving block (14) is rotatably connected with a connecting rod (15) inside, and the two connecting rods (15) are hinged, and the bottom end of each connecting rod (15) is rotatably connected with a roller (16).

2. A gusseted lay-flat bag cutting apparatus as defined in claim 1, wherein, The reciprocating mechanism comprises a reciprocating screw (11), and the reciprocating screw (11) is rotatably connected to the bottom surface of the second gantry (3), the outer side of the assembling seat (13) is fixedly provided with a screw sleeve (20), and the assembling seat (13) is threadedly connected with the screw sleeve (20), and the top surface of the second gantry (3) is fixedly provided with a motor (9), and the output shaft of the motor (9) is connected with the reciprocating screw (11).

3. A device for cutting an eight-sided gusseted flat bottom bag according to claim 2, wherein, The assembling seat (13) is fixedly provided with a sliding rod (17) inside, a plurality of guide grooves (18) are symmetrically formed in the sliding rod (17), each moving block (14) passes through the sliding rod (17) and is slidably connected with the guide grooves (18), and a return spring (19) is commonly arranged between one side of each moving block (14) and the inner side of the assembling seat (13).

4. A device for cutting an eight-sided gusseted flat bottom bag according to claim 3, wherein, The bottom surface of the mounting plate (5) is symmetrically provided with a plurality of spring telescopic rods (7), and the bottom end of each spring telescopic rod (7) is fixedly connected with the top surface of the corresponding pressing plate (8).

5. A gusseted lay-flat bag cutting apparatus as defined in claim 4, wherein, The bottom surface of the second gantry (3) is fixedly provided with a guide rod (12), and the guide rod (12) is slidably connected with the assembling seat (13).

6. A gusseted lay-flat bag cutting apparatus as defined in claim 5, wherein, Both inner sides of the second gantry (3) are fixedly provided with a fixed plate (10), and the bottom end of the guide rod (12) and the reciprocating screw (11) are rotatably connected with the top surface of the corresponding fixed plate (10).

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