Positioning and cutting device for polypropylene film ton bag production

Abstract

The utility model relates to the technical field of plastic product manufacturing, in particular to a positioning and cutting device for polypropylene film ton bag production, which comprises a mounting seat, a conveying belt is mounted in the mounting seat, a motor is mounted on one side of the mounting seat, a driving shaft of the motor is fixedly connected to the conveying belt, and limiting components are arranged on two sides of the top of the conveying belt. A mounting frame is fixedly connected to the top, located on one side of the conveying belt, of the mounting base, a hydraulic rod is mounted at the top of the mounting frame, a mounting plate fixedly connected to the hydraulic rod is arranged at the bottom of the mounting frame, a cutter is movably mounted at the bottom of the mounting plate, and pressing assemblies are arranged on the two sides of the mounting plate. According to the polypropylene cutting device, polypropylene can be limited and guided in the conveying process, the two sides of the cutting position can be pressed and fixed in the cutting process, and the situation that the cutting effect is affected due to inclination, wrinkling and displacement of the polypropylene is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of plastic product manufacturing technology, and in particular to a positioning and cutting device for the production of polypropylene film ton bags. Background Technology

[0002] Polypropylene film ton bags are large packaging containers made primarily of polypropylene film. They are rectangular or cylindrical in shape and have a large capacity to hold one ton or more of goods. Their structure includes the bag body, lifting straps, inlet and outlet. The bag body is made of multiple layers of polypropylene film through extrusion and other processes to improve strength and toughness. They are widely used in the field of industrial product packaging and can be used to package various materials such as chemical raw materials, plastic granules, and fertilizers.

[0003] In the production process of polypropylene film ton bags, cutting is required, necessitating the use of a cutting device. National patent application CN221584703U discloses a ton bag cutting fixture, which "includes a conveyor belt, with four legs fixedly connected to the bottom of the conveyor belt, a U-shaped frame fixedly connected to the upper surface of the conveyor belt, a cylinder fixedly connected to the surface of the U-shaped frame, a mounting plate fixedly connected to the output end of the cylinder, and a fixing device on the side of the mounting plate away from the cylinder… This fixing device effectively secures the cutting blade, allowing for quick cutting when the cutting blade becomes chipped." The prior art document states that while the cutter can be quickly installed and removed, its structure is relatively simple and lacks a mechanism for limiting and guiding the polypropylene. The polypropylene may tilt or wrinkle during transport, affecting the cutting effect. Furthermore, it lacks a clamping mechanism; during cutting, the polypropylene may move towards the cutting position due to the lack of clamping on both sides, further impacting the cutting effect. Therefore, this application proposes a positioning and cutting device for polypropylene film ton bag production to meet the requirements. Utility Model Content

[0004] In order to overcome the shortcomings of existing devices that may cause polypropylene to tilt and wrinkle during the conveying process and may cause displacement of the cutting position on both sides during the cutting process, thus affecting the cutting effect, this utility model provides a positioning and cutting device for the production of polypropylene film ton bags.

[0005] The technical implementation scheme of this utility model is as follows: a positioning and cutting device for producing polypropylene film ton bags, including a mounting base, a conveyor belt installed inside the mounting base, a motor with a drive shaft fixedly connected to the conveyor belt installed on one side of the mounting base, limit components provided on both sides of the top of the conveyor belt, a mounting frame fixedly connected to the top of one side of the mounting base, a hydraulic rod installed on the top of the mounting frame, a mounting plate fixedly connected to the hydraulic rod at the bottom of the mounting frame, a cutter movably installed at the bottom of the mounting plate, and clamping components provided on both sides of the mounting plate.

[0006] Optionally, the limiting component includes a limiting plate, an adjusting groove, and an adjusting plate. Two sets of limiting plates are provided and are located above the conveyor belt. The adjusting groove passes through the inner walls of both sides of the mounting base. The adjusting plate is fixedly connected to the outside of the limiting plate and slidably connected to the adjusting groove.

[0007] Optionally, the limiting component further includes a fixing hole, a through groove, and a fixing rod. The fixing hole is provided in several sets and extends through the adjusting plate. The through groove extends through the inner wall of the top of the adjusting groove. The fixing rod is movably connected to the through groove and is adapted to the size of the fixing hole.

[0008] Optionally, the limiting component further includes a first slide groove, a first slider, a first spring, and a pull block. The first slide groove is formed on the inner walls of both sides of the through groove. The first slider is fixedly connected to the outer periphery of the fixed rod and slidably connected to the first slide groove. The first spring is sleeved on the outer periphery of the fixed rod and its two ends are respectively fixedly connected to the top of the first slider and the inner wall of the top of the first slide groove. The pull block is fixedly connected to the top of the fixed rod.

[0009] Optionally, the clamping assembly includes a connecting rod and a pressure plate. The connecting rod is L-shaped and fixedly connected to both sides of the mounting plate, and the pressure plate is located below the connecting rod and is lower than the cutter.

[0010] Optionally, the clamping assembly further includes a second slide groove, a connecting groove, a vertical rod, a second slider, and a second spring. The second slide groove is formed inside the bottom end of the connecting rod, the connecting groove passes through the top inner wall of the second slide groove, the vertical rod is fixedly connected to the top of the pressure plate and extends through the connecting groove into the interior of the second slide groove, the second slider is fixedly connected to the top of the vertical rod and slidably connected to the second slide groove, and the second spring is installed inside the second slide groove with its two ends fixedly connected to the top of the second slider and the top inner wall of the second slide groove, respectively.

[0011] This utility model has the following advantages:

[0012] 1. This utility model, by setting a limiting component, allows the pull block to be pulled upwards, causing it to slide upwards along the first slide groove via the fixed rod and compress the first spring. When the fixed rod moves out of the fixed hole, the adjusting plate slides along the adjusting groove, causing it to move synchronously with the limiting plate. When the distance between the two sets of limiting plates matches the width of the polypropylene to be cut, the pull block is released, the first spring rebounds, and the first slide block causes the fixed rod to move downwards. When the fixed rod is inserted into the fixed hole at the current position, the adjusting plate is fixed at the current position, thereby fixing the limiting plate at the current position. This design allows the device to limit and guide the polypropylene during the conveying process, effectively preventing the polypropylene from tilting or wrinkling and affecting the cutting effect.

[0013] 2. This utility model, by incorporating a clamping assembly, ensures that during the cutting process, the pressure plate first contacts the polypropylene. As the cutter descends, the vertical rod drives the second slider to slide upwards along the second groove, compressing the second spring. The rebound force generated by the second spring then fixes the pressure plate onto the polypropylene surface, thereby clamping the pressure plate against both sides of the polypropylene at the cutting location, preventing displacement and ensuring a smooth cutting effect. Subsequently, the cutter contacts the polypropylene for cutting. After cutting, the cutter rises, the second spring gradually rebounds, and the pressure plate is reset via the second slider and vertical rod, ready for the next cutting operation. This design allows the device to clamp both sides of the polypropylene at the cutting location during cutting, effectively preventing displacement and ensuring a smooth cutting effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the limiting component structure of this utility model. Figure 1 ;

[0016] Figure 3 This is a schematic diagram of the limiting component structure of this utility model. Figure 2 ;

[0017] Figure 4 This is a schematic diagram of the clamping component structure of this utility model. Figure 1 ;

[0018] Figure 5 This is a schematic diagram of the clamping component structure of this utility model. Figure 2 .

[0019] The meanings of the reference numerals in the attached diagram are as follows: 1. Mounting base; 2. Conveyor belt; 3. Motor; 4. Limiting assembly; 41. Limiting plate; 42. Adjusting groove; 43. Adjusting plate; 44. Fixing hole; 45. Through groove; 46. Fixing rod; 47. First slide groove; 48. First slider; 49. First spring; 410. Pull block; 5. Mounting bracket; 6. Hydraulic rod; 7. Mounting plate; 8. Cutter; 9. Clamping assembly; 91. Connecting rod; 92. Pressure plate; 93. Second slide groove; 94. Connecting groove; 95. Vertical rod; 96. Second slider; 97. Second spring. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will describe this utility model in further detail with reference to the accompanying drawings. It is hereby declared that the terms "up," "down," "left," "right," "front," "back," "inner," and "outer," etc., appearing or about to appear in this document, are based solely on the accompanying drawings and are not intended to specifically limit this utility model.

[0021] A positioning and cutting device for producing polypropylene film ton bags includes a mounting base 1, a conveyor belt 2 installed inside the mounting base 1, a motor 3 with a drive shaft fixedly connected to the conveyor belt 2 on one side of the mounting base 1, limit components 4 on both sides of the top of the conveyor belt 2, a mounting frame 5 fixedly connected to the top of one side of the mounting base 1 on the conveyor belt 2, a hydraulic rod 6 installed on the top of the mounting frame 5, a mounting plate 7 fixedly connected to the hydraulic rod 6 at the bottom of the mounting frame 5, a cutter 8 movably installed at the bottom of the mounting plate 7, and clamping components 9 on both sides of the mounting plate 7.

[0022] It should be noted that the limiting component 4 is used to limit and guide the polypropylene, so that it can move linearly on the conveyor belt 2 and avoid tilting, which would affect the cutting effect. The clamping component 9 is used to fix the polypropylene during cutting to prevent it from shifting and affecting the cutting effect.

[0023] like Figure 2 and Figure 3 As shown, the limiting component 4 includes a limiting plate 41, an adjusting groove 42, and an adjusting plate 43. The limiting plate 41 is provided in two sets and is located above the conveyor belt 2. The adjusting groove 42 passes through the inner walls of both sides of the mounting base 1. The adjusting plate 43 is fixedly connected to the outside of the limiting plate 41 and slidably connected to the adjusting groove 42.

[0024] It should be noted that the distance between the two sets of limiting plates 41 can be adjusted by sliding the adjusting plate 43 along the adjusting groove 42, thereby enabling it to limit and guide polypropylene of different widths.

[0025] like Figure 2 and Figure 3As shown, the limiting component 4 also includes a fixing hole 44, a through groove 45 and a fixing rod 46. The fixing hole 44 is provided in several sets and passes through the adjusting plate 43. The through groove 45 passes through the inner wall of the top of the adjusting groove 42. The fixing rod 46 is movably connected to the through groove 45 and is adapted to the size of the fixing hole 44.

[0026] It should be noted that the position of the limiting plate 41 can be adjusted by removing the fixing rod 46 from the fixing hole 44, and the limiting plate 41 can be fixed in the current position by inserting the fixing rod 46 into the fixing hole 44.

[0027] like Figure 3 As shown, the limiting component 4 also includes a first slide groove 47, a first slider 48, a first spring 49, and a pull block 410. The first slide groove 47 is opened on the inner walls of both sides of the through groove 45. The first slider 48 is fixedly connected to the outer periphery of the fixed rod 46 and slidably connected to the first slide groove 47. The first spring 49 is sleeved on the outer periphery of the fixed rod 46 and its two ends are respectively fixedly connected to the top of the first slider 48 and the top inner wall of the first slide groove 47. The pull block 410 is fixedly connected to the top of the fixed rod 46.

[0028] It should be noted that pulling the pull block 410 upward will cause the first slider 48 to slide upward along the first slide groove 47 via the fixed rod 46 and compress the first spring 49. Releasing the pull block 410 will cause the first spring 49 to rebound and cause the fixed rod 46 to move downward via the first slider 48.

[0029] like Figure 4 and Figure 5 As shown, the clamping assembly 9 includes a connecting rod 91 and a pressure plate 92. The connecting rod 91 is L-shaped and fixedly connected to both sides of the mounting plate 7. The pressure plate 92 is located below the connecting rod 91 and its height is lower than that of the cutter 8.

[0030] It should be noted that when the cutter 8 moves downward to cut, the pressure plate 92 will press down on both sides of the polypropylene at the cutting position, thereby preventing the polypropylene from shifting and affecting the cutting effect.

[0031] like Figure 4 and Figure 5 As shown, the clamping assembly 9 also includes a second slide groove 93, a connecting groove 94, a vertical rod 95, a second slider 96, and a second spring 97. The second slide groove 93 is opened inside the bottom end of the connecting rod 91. The connecting groove 94 passes through the top inner wall of the second slide groove 93. The vertical rod 95 is fixedly connected to the top of the pressure plate 92 and extends through the connecting groove 94 into the interior of the second slide groove 93. The second slider 96 is fixedly connected to the top of the vertical rod 95 and slidably connected to the second slide groove 93. The second spring 97 is installed inside the second slide groove 93 and its two ends are fixedly connected to the top of the second slider 96 and the top inner wall of the second slide groove 93, respectively.

[0032] It should be noted that since the height of the pressure plate 92 is lower than that of the cutter 8, the pressure plate 92 will first come into contact with the polypropylene during cutting. As the cutter 8 gradually descends, the position of the pressure plate 92 remains unchanged. The vertical rod 95 drives the second slider 96 to slide upward along the second groove 93 and squeeze the second spring 97. At this time, the rebound force generated by the second spring 97 can press the pressure plate 92 tightly against the top of the polypropylene. After the cutting is completed, the cutter 8 rises, and the rebound of the second spring 97 can drive the pressure plate 92 to reset through the second slider 96 and the vertical rod 95.

[0033] In a specific application scenario, firstly, pull the pull block 410 upwards so that it drives the first slider 48 to slide upwards along the first slide groove 47 via the fixed rod 46, thus compressing the first spring 49. When the fixed rod 46 moves out of the fixed hole 44, slide the adjusting plate 43 along the adjusting groove 42 so that it drives the limiting plate 41 to move synchronously. When the distance between the two sets of limiting plates 41 matches the width of the polypropylene to be cut, release the pull block 410. The first spring 49 rebounds and drives the fixed rod 46 downwards via the first slider 48. When the fixed rod 46 is inserted into the fixed hole 44 at the current position, the adjusting plate 43 is fixed at the current position, thereby fixing the limiting plate 41 at the current position. After the adjustment of the limiting plate 41 is completed, place the polypropylene on the top of the conveyor belt 2 and ensure that its two sides are tightly fitted with the limiting plate 41. Then start the motor 3 to drive the conveyor belt 2 to rotate, thus conveying the polypropylene. During this process, the limiting plate 41 will... The polypropylene is guided by a limiting device to prevent it from tilting or wrinkling. When the polypropylene needs to be cut, it moves to the bottom of the cutter 8. The hydraulic rod 6 is activated, which drives the cutter 8 downward through the mounting plate 7. Since the height of the pressure plate 92 is lower than that of the cutter 8, the pressure plate 92 will contact the polypropylene first. As the cutter 8 descends, since the positions of the pressure plate 92 and the connecting rod 91 remain unchanged, the vertical rod 95 will drive the second slider 96 to slide upward along the second slide groove 93 and squeeze the second spring 97. At this time, the rebound force generated by the second spring 97 can fix the pressure plate 92 on the surface of the polypropylene, so that the pressure plate 92 presses the two sides of the polypropylene to be cut, preventing it from shifting and affecting the cutting effect. Then the cutter 8 contacts the polypropylene to cut. After the cutting is completed, the cutter 8 rises, the second spring 97 gradually rebounds, and drives the pressure plate 92 to reset through the second slider 96 and the vertical rod 95, ready for the next cutting.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A positioning and cutting device for producing polypropylene film ton bags, comprising a mounting base (1), characterized in that, The mounting base (1) is equipped with a conveyor belt (2). A motor (3) with a drive shaft fixedly connected to the conveyor belt (2) is installed on one side of the mounting base (1). Limiting components (4) are provided on both sides of the top of the conveyor belt (2). A mounting frame (5) is fixedly connected to the top of the mounting base (1) on one side of the conveyor belt (2). A hydraulic rod (6) is installed on the top of the mounting frame (5). A mounting plate (7) is fixedly connected to the hydraulic rod (6) at the bottom of the mounting frame (5). A cutter (8) is movably installed at the bottom of the mounting plate (7). A clamping component (9) is provided on both sides of the mounting plate (7).

2. The positioning and cutting device for producing polypropylene film ton bags according to claim 1, characterized in that, The limiting component (4) includes a limiting plate (41), an adjusting groove (42) and an adjusting plate (43). The limiting plate (41) is provided in two sets and is located above the conveyor belt (2). The adjusting groove (42) passes through the inner walls of both sides of the mounting base (1). The adjusting plate (43) is fixedly connected to the outside of the limiting plate (41) and slidably connected to the adjusting groove (42).

3. A positioning and cutting device for producing polypropylene film ton bags according to claim 2, characterized in that, The limiting component (4) also includes a fixing hole (44), a through groove (45) and a fixing rod (46). The fixing hole (44) is provided in several sets and passes through the adjusting plate (43). The through groove (45) passes through the inner wall of the top of the adjusting groove (42). The fixing rod (46) is movably connected to the through groove (45) and is adapted to the size of the fixing hole (44).

4. A positioning and cutting device for producing polypropylene film ton bags according to claim 3, characterized in that, The limiting component (4) further includes a first slide groove (47), a first slider (48), a first spring (49), and a pull block (410). The first slide groove (47) is opened on the inner walls of both sides of the through groove (45). The first slider (48) is fixedly connected to the outer periphery of the fixed rod (46) and slidably connected to the first slide groove (47). The first spring (49) is sleeved on the outer periphery of the fixed rod (46) and its two ends are respectively fixedly connected to the top of the first slider (48) and the top inner wall of the first slide groove (47). The pull block (410) is fixedly connected to the top of the fixed rod (46).

5. A positioning and cutting device for producing polypropylene film ton bags according to claim 1, characterized in that, The clamping assembly (9) includes a connecting rod (91) and a pressure plate (92). The connecting rod (91) is L-shaped and fixedly connected to both sides of the mounting plate (7). The pressure plate (92) is located below the connecting rod (91) and its height is lower than that of the cutter (8).

6. A positioning and cutting device for producing polypropylene film ton bags according to claim 5, characterized in that, The clamping assembly (9) further includes a second slide groove (93), a connecting groove (94), a vertical rod (95), a second slider (96), and a second spring (97). The second slide groove (93) is opened inside the bottom end of the connecting rod (91). The connecting groove (94) passes through the inner wall of the top of the second slide groove (93). The vertical rod (95) is fixedly connected to the top of the pressure plate (92) and extends through the connecting groove (94) into the interior of the second slide groove (93). The second slider (96) is fixedly connected to the top of the vertical rod (95) and slidably connected to the second slide groove (93). The second spring (97) is installed inside the second slide groove (93) and its two ends are respectively fixedly connected to the top of the second slider (96) and the inner wall of the top of the second slide groove (93).

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