Plastic bag cutting device

Abstract

The utility model discloses a plastic bag cutting device, which belongs to the field of cutting devices, and is supported by designing a bracket which is half of the height of a person, so that the person does not need to stoop to operate, and the aim of saving labor is fulfilled. Meanwhile, the movable supporting mechanism for the winding drum to rotate freely and the roller for tensioning the long-strip plastic bag are installed on the support, and manual operation is not needed any more. A rotating mechanism and a cutting auxiliary mechanism are installed at the other end of the support, the rotating mechanism is of a spinning wheel structure, a long-strip plastic bag can be wound by rotating a rotating handle after being clamped through a clamping plate structure, the clamping plate structure can control the length of one circle of each roll by adjusting the position on a long screw, and fixed-length cutting is achieved; and a supporting plate on the cutting auxiliary mechanism can be adjusted up and down to be closely intersected with the clamping plate structure, the effect of a cutting ruler is achieved, and therefore the cutting precision is guaranteed. And through cooperation of the movable supporting mechanism, the rotating mechanism and the cutting auxiliary mechanism, time-saving, labor-saving, convenient and accurate long-strip plastic bag cutting operation is achieved.

Description

Technical Field

[0001] The utility model relates to the field of cutting devices, in particular to a plastic bag cutting device. Background Art

[0002] In the modern packaging industry, long plastic bags are widely used across various industries due to their excellent flexibility, barrier properties, and cost-effectiveness. During production, these bags are typically rolled into rolls for easy storage, transportation, and subsequent use, and then cut into different lengths as needed.

[0003] In the past, the cutting of long, roll-shaped plastic packaging bags relied primarily on manual labor. Operators used cutting tools, such as paper cutters or scissors, to cut the bags to the required length. This method presented numerous problems. First, when it came to cutting longer lengths of plastic bags, cutting accuracy was low. Since it relied entirely on visual judgment and manual stability, it was difficult to ensure that each cut met the required length. Second, manual cutting was inefficient. Simply rotating the rolled plastic bags manually was time-consuming and labor-intensive, unable to meet the demands of production rhythms, increasing labor costs and production time. Furthermore, due to the limitations of the operating environment and the variability of cutting requirements, specialized automated cutting equipment was currently unavailable due to cost considerations. Therefore, it was necessary to design a cutting device that was both time-saving and labor-saving, and relatively convenient, suitable for a variety of situations. Utility Model Content

[0004] The main purpose of the utility model is to provide a plastic bag cutting device, which can effectively solve the problems mentioned in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A plastic bag cutting device includes a bracket, a movable support mechanism is installed at one end of the top of the bracket, and the movable support mechanism places a roll formed by winding plastic bags through a movable rod. A rotating mechanism is fixedly installed at the other end of the top of the bracket, and the rotating mechanism is provided with four groups of long screws arranged in a ring and rotatable. A splint structure for clamping the long plastic bags on the roll is installed at the end of each group of long screws. A cutting auxiliary mechanism is also installed below the rotating mechanism, and an obliquely adjustable support plate is provided on the cutting auxiliary mechanism. The support plate can be adjusted up and down to intersect with the splint structure to assist in cutting the long plastic bags.

[0007] Preferably, the movable support mechanism includes a pair of bases, a pair of movable rollers are installed in the bases, and the two ends of the movable rod are respectively mounted on the two rollers. A limit block is fixedly installed on the outer side of the base, and a vertical groove is opened on the inner side of the limit block, and the two ends of the movable rod are confined in the groove.

[0008] Preferably, the rotating mechanism includes a pair of bases, each base having a second bearing seat fixedly mounted thereon, a center rod being provided between the two second bearing seats, both ends of the center rod being connected to the bearings in the second bearing seats, and a rotating handle being mounted at each end.

[0009] Preferably, a long screw rod is vertically installed at both ends of the four sides of the central rod, and the two ends of the clamping plate structure are respectively passed through the long screw rod and locked and fixed by two pairs of adjusting nuts.

[0010] Preferably, the clamping plate structure includes a base plate and a pressure plate, a slot is provided on the surface of the base plate, the pressure plate is embedded in the slot, and adjustment holes are provided at both ends of the base plate for connecting to the long screw.

[0011] Preferably, a connecting column is installed on both sides of the bottom surface of the pressure plate, and a spring is fixedly mounted on each connecting column. A connecting hole is opened on both sides of the surface of the slot, and the connecting column is installed in the connecting hole through the spring. A pair of magnets are also embedded on both sides of the surface of the slot.

[0012] Preferably, the cutting auxiliary mechanism includes a pair of supporting oblique rods, which are obliquely installed between the bracket and the base. A T-shaped slot is provided on the surface of the supporting oblique rod, and a connecting block is provided in the T-shaped slot. An adjusting bolt is connected to each end of the supporting plate, and the adjusting bolt passes through the supporting plate, extends into the T-shaped slot, and is threadedly connected to the connecting block.

[0013] Preferably, a movable roller is installed on the top of the bracket on one side of the movable support mechanism through a pair of first bearing seats, and the long plastic bag on the roll passes through the bottom of the roller and then is sent to the rotating mechanism from above the cutting auxiliary mechanism.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In the present utility model, a half-person-high bracket is designed to support the cutting device, so that people do not need to bend over to operate, thus achieving the purpose of labor saving. At the same time, a movable support mechanism for the free rotation of the reel and a roller for tensioning the long plastic bag are installed on the bracket, and manual operation is no longer required. A rotating mechanism and a cutting auxiliary mechanism are installed on the other end of the bracket. The rotating mechanism is a spinning wheel structure. After the long plastic bag is clamped by the splint structure, it can be wound by turning the handle. The splint structure can control the length of each roll by adjusting the position on the long screw to achieve fixed-length cutting; and the support plate on the cutting auxiliary mechanism can be adjusted up and down to closely intersect with the splint structure, forming the role of a cutting ruler, thereby ensuring cutting accuracy. The cooperation of the movable support mechanism, the rotating mechanism and the cutting auxiliary mechanism realizes a time-saving, labor-saving, convenient and accurate long plastic bag cutting operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the rotating mechanism structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the movable support mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the cutting auxiliary mechanism structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the splint structure of the utility model.

[0021] In the figure: 1. bracket; 2. movable supporting mechanism; 3. first bearing seat; 4. roller; 5. rotating mechanism; 6. cutting auxiliary mechanism; 7. base; 8. second bearing seat; 9. center rod; 10. rotating handle; 11. long screw; 12. adjusting nut; 13. splint structure; 14. base; 15. roller; 16. movable rod; 17. limit block; 18. supporting diagonal rod; 19. T-slot; 20. support plate; 21. connecting block; 22. adjusting bolt; 23. bottom plate; 24. slot; 25. adjusting hole; 26. pressure plate; 27. connecting column; 28. spring; 29. ​​connecting hole; 30. magnet; 31. reel; 32. long plastic bag. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1As shown, a plastic bag cutting device includes a bracket 1, a movable supporting mechanism 2 is installed at one end of the top of the bracket 1, and a movable roller 4 is installed on one side of the movable supporting mechanism 2 at the top of the bracket 1 through a pair of first bearing seats 3. The movable supporting mechanism 2 places a reel 31 formed by winding the plastic bag through a movable rod 16, and a rotating mechanism 5 is fixedly installed at the other end of the top of the bracket 1. The rotating mechanism 5 is provided with four groups of long screws 11 arranged in a ring and rotatable. The end of each group of long screws 11 is provided with a splint structure 13 for clamping the long plastic bag 32 on the reel 31, and a cutting auxiliary mechanism 6 is also installed below the rotating mechanism 5. The cutting auxiliary mechanism 6 is provided with an obliquely adjustable support plate 20, which can be adjusted up and down to intersect with the splint structure 13 to assist in cutting the long plastic bag 32. The long plastic bag 32 on the reel 31 passes through the bottom of the roller 4 and is then sent to the rotating mechanism 5 from above the cutting auxiliary mechanism 6.

[0024] like Figure 2 As shown, the rotating mechanism 5 includes a pair of bases 7, each of which has a second bearing seat 8 fixedly mounted thereon. A central rod 9 is disposed between the two second bearing seats 8. The ends of the central rod 9 are connected to the bearings within the second bearing seats 8, and a rotating handle 10 is mounted at each end. A long screw rod 11 is vertically mounted on each of the four sides of the central rod 9. The ends of a clamping plate structure 13 are respectively threaded onto the long screw rods 11 and secured by two pairs of adjusting nuts 12.

[0025] In this embodiment, if Figure 5 As shown, the clamping structure 13 includes a base plate 23 and a pressure plate 26. The base plate 23 has a slot 24 on its surface, and the pressure plate 26 is embedded in the slot 24. Adjustment holes 25 are respectively provided at both ends of the base plate 23 for connection to the long screw 11. A connecting post 27 is mounted on each side of the bottom surface of the pressure plate 26, and a spring 28 is fixedly mounted on each connecting post 27. A connecting hole 29 is correspondingly provided on each side of the slot 24, and the connecting post 27 is installed in the connecting hole 29 via the spring 28. A pair of magnets 30 are also embedded on each side of the slot 24.

[0026] like Figure 3 As shown, the movable support mechanism 2 includes a pair of bases 14, a pair of movable rollers 15 are installed in the base 14, and the two ends of the movable rod 16 are respectively mounted on the two rollers 15. A limit block 17 is fixedly installed on the outer side of the base 14, and a vertical groove is opened on the inner side of the limit block 17. The two ends of the movable rod 16 are restricted in the groove.

[0027] like Figure 4As shown, the cutting auxiliary mechanism 6 includes a pair of supporting oblique rods 18, which are obliquely installed between the bracket 1 and the base 7. A T-shaped slot 19 is provided on the surface of the supporting oblique rod 18, and a connecting block 21 is provided in the T-shaped slot 19. An adjusting bolt 22 is connected to each end of the support plate 20, and the adjusting bolt 22 passes through the support plate 20 and extends into the T-shaped slot 19 and is threadedly connected to the connecting block 21.

[0028] In actual use, the movable rod 16 is first removed, the reel 31 is threaded onto the movable rod 16, and then the movable rod 16 is placed on the two sets of rollers 15 inside the base 14. The rollers 15 can rotate freely, so that when the long plastic bag 32 on the reel 31 is pulled, the movable rod 16 can also rotate freely, reducing resistance. The limit blocks 17 on both sides of the base 14 use the grooves on the inside to clamp the movable rod 16, preventing the movable rod 16 from falling off the rollers 15 due to excessive pulling force or excessive speed when pulling the reel 31.

[0029] Pass the long plastic bag 32 from under the roller 4 and then upward from the support plate 20. The height difference is used to form a tensioning effect, which facilitates accurate cutting and saves effort. After the long plastic bag 32 passes over the support plate 20, open any pressure plate 26 on the clamping structure 13. Simply pinch it with your fingers and pull it upward to separate the pressure plate 26 from the bottom plate 23. Then pass the long plastic bag 32 through the gap between the two. Then release the bottom plate 23. Under the action of the rebound force of the spring 28, the bottom plate 23 is reset to the slot 24. The metal bottom plate 23 is fixed with the magnet 30 on the surface of the slot 24, thereby fixing the end of the long plastic bag 32. Turning the handle 10 clockwise can drive the four clamping structures 13 to rotate clockwise. Since the clamping plate structure 13 can be adjusted on the long screw 11, the circumference of the clamping plate structure 13 during one rotation can be changed by adjusting the height of the clamping plate structure 13 on the long screw 11. After measurement, the circumference corresponding to different positions of the clamping plate structure 13 can be marked on the long screw 11, thereby knowing the length of the long plastic bag 32 corresponding to one rotation. Similarly, by marking the surface of the support diagonal rod 18 with scale, the support plate 20 can be adjusted to the appropriate position.

[0030] Assume that after adjustment, the length corresponding to one rotation of the splint structure 13 is 2 meters, and the length of the long plastic bag 32 to be cut is 4 meters (for packaging long strip products). At this time, it is necessary to adjust the support plate 20 to the splint structure 13 after clamping the long plastic bag 32, so that the two are close to each other without affecting the rotation, and then rotate 2 circles so that the splint structure 13 clamping the end of the long plastic bag 32 returns to the position where it intersects and overlaps with the support plate 20. At this time, you only need to use the edge of the support plate 20 to cut the long plastic bag 32, which not only completes the fixation of the cutting position, but also can achieve straight line cutting with the support plate 20 as a ruler, thereby completing accurate cutting of a fixed length.

[0031] 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. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A plastic bag cutting device, characterized by: The invention comprises a bracket (1), wherein a movable support mechanism (2) is installed at one end of the top of the bracket (1), and the movable support mechanism (2) places a roll (31) formed by winding a plastic bag through a movable rod (16); a rotating mechanism (5) is fixedly installed at the other end of the top of the bracket (1), and the rotating mechanism (5) is provided with four groups of long screws (11) arranged in an annular shape and rotatable, and a clamping plate structure (13) for clamping the long plastic bag (32) on the roll (31) is installed at the end of each group of long screws (11); a cutting auxiliary mechanism (6) is also installed below the rotating mechanism (5), and an obliquely adjustable support plate (20) is provided on the cutting auxiliary mechanism (6), and the support plate (20) can be adjusted up and down to intersect with the clamping plate structure (13) to assist in cutting the long plastic bag (32).

2. A plastic bag cutting device according to claim 1, characterized in that: The movable support mechanism (2) comprises a pair of bases (14), a pair of movable rollers (15) are installed in the bases (14), and the two ends of the movable rod (16) are respectively mounted on the two rollers (15). A limit block (17) is fixedly installed on the outer side of each base (14), and a vertical groove is provided on the inner side of the limit block (17), and the two ends of the movable rod (16) are restricted in the groove.

3. A plastic bag cutting device according to claim 2, characterized in that: The rotating mechanism (5) comprises a pair of bases (7), a second bearing seat (8) being fixedly mounted on each base (7), a center rod (9) being provided between the two second bearing seats (8), both ends of the center rod (9) being connected to bearings in the second bearing seats (8), and a rotating handle (10) being mounted at each end.

4. The plastic bag cutting device according to claim 3, characterized in that: A long screw rod (11) is vertically installed at both ends of the four sides of the central rod (9), and both ends of the clamping plate structure (13) are respectively passed through the long screw rod (11) and locked and fixed by two pairs of adjusting nuts (12).

5. The plastic bag cutting device according to claim 4, characterized in that: The clamping plate structure (13) includes a base plate (23) and a pressure plate (26). A slot (24) is provided on the surface of the base plate (23), and the pressure plate (26) is embedded in the slot (24). Adjustment holes (25) are provided at both ends of the base plate (23) for connecting to the long screw (11).

6. The plastic bag cutting device according to claim 5, characterized in that: A connecting column (27) is installed on both sides of the bottom surface of the pressure plate (26), and a spring (28) is fixedly mounted on each connecting column (27). A connecting hole (29) is correspondingly opened on both sides of the surface of the card slot (24), and the connecting column (27) is installed in the connecting hole (29) through the spring (28). A pair of magnets (30) are also embedded on both sides of the surface of the card slot (24).

7. The plastic bag cutting device according to claim 6, characterized in that: The cutting auxiliary mechanism (6) comprises a pair of supporting oblique rods (18), the supporting oblique rods (18) being obliquely installed between the bracket (1) and the base (7), a T-shaped slot (19) being provided on the surface of the supporting oblique rod (18), a connecting block (21) being provided in the T-shaped slot (19), an adjusting bolt (22) being connected to each end of the supporting plate (20), the adjusting bolt (22) passing through the supporting plate (20) and extending into the T-shaped slot (19) and being threadedly connected to the connecting block (21).

8. A plastic bag cutting device according to any one of claims 1 to 7, characterized in that: A movable roller (4) is installed on the top of the bracket (1) on one side of the movable support mechanism (2) through a pair of first bearing seats (3). The long plastic bag (32) on the roll (31) passes through the bottom of the roller (4) and is then sent to the rotating mechanism (5) from above the cutting auxiliary mechanism (6).

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