Mulching film cutting device

Abstract

The utility model relates to the technical field of agricultural production, in particular to a mulching film cutting device which comprises a U-shaped frame and sliding blocks connected with the inner walls of the two sides of the U-shaped frame in a sliding mode, a toothed plate and a guide rod are fixedly erected between the two sliding blocks, a knife rest connected with the guide rod in a sliding mode is installed on the guide rod, and a locking component is installed on the knife rest. The bottom of the U-shaped frame is further provided with a fixing device used for clamping a mulching film. And a blade is fixedly mounted on the knife rest through a screw. According to the mulching film cutting device, through linkage of the U-shaped frame, the sliding block and the spring reset mechanism, single-hand rapid downward pressing cutting and accurate movement of the blade along the guide rod are achieved, a ratchet wheel-pawl structure of the locking component is matched, side slipping of the tool rest is effectively prevented, it is ensured that single-time cutting is completed, and repeated operation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of agricultural production technology, and in particular to a plastic film cutting device. Background Technology

[0002] In agricultural production, plastic film mulching technology is widely used to conserve moisture, increase temperature, and suppress weed growth, thereby increasing crop yield. However, there are significant problems with the laying and subsequent cutting of plastic film.

[0003] Traditional methods rely heavily on manual cutting with ordinary knives or scissors, which is not only inefficient and labor-intensive, but also results in uneven cut edges that affect the subsequent use of the mulch film. Although there are some electric cutting devices on the market, their complex structure, high cost, and reliance on electricity make them difficult to promote in remote areas or small-scale farmland. In addition, existing cutting devices generally lack stable fixing mechanisms, causing the mulch film to shift during cutting and resulting in insufficient precision. Some manual devices have poor blade holder sliding stability, requiring repeated cutting, which further reduces efficiency.

[0004] Therefore, it is necessary to provide a new mulch film cutting device to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a plastic film cutting device.

[0006] The mulch film cutting device provided by this utility model includes a U-shaped frame, on both sides of the inner wall of the U-shaped frame are slidably connected sliding blocks, and a toothed plate and a guide rod are fixedly mounted between the two sliding blocks. A slidably connected knife holder is mounted on the guide rod, and a locking component is mounted on the knife holder.

[0007] The locking component includes a rotating shaft and a mounting rod. The rotating shaft is rotatably mounted on the tool holder, and a gear and a ratchet are fixedly sleeved on the rotating shaft. The gear meshes with a gear plate. The mounting rod is fixedly mounted on the tool holder, and a rotatably connected pawl is sleeved on the mounting rod. A torsion spring for driving the pawl to engage with the ratchet is also installed on the mounting rod.

[0008] The bottom of the U-shaped frame is also equipped with a clamp for holding the mulch film;

[0009] The blade is fixedly mounted on the tool holder by screws.

[0010] Preferably, each bottom plate of the U-shaped frame is fixedly installed with a pad, and a connecting I-beam is fixedly mounted between the two pads. Two sets of fasteners are provided and are installed on the connecting I-beam.

[0011] Preferably, the fastener includes a Y-shaped plate, which passes through a groove in the web of the I-beam and is slidably connected to the groove. An abutment piece that abuts against the web is fixedly installed at the through end of the Y-shaped plate. An mounting plate is fixedly installed at the connecting end of the Y-shaped plate, and an L-shaped plate is fixedly installed on the mounting plate. A threaded rod is inserted into the L-shaped plate, and a pressing plate is fixedly installed at the bottom of the rod. The pressing plate is disposed opposite to the upper surface of the I-beam.

[0012] Preferably, a threaded fixing screw is installed on the Y-shaped plate to fix the Y-shaped plate to the position on the butt-joint I-beam.

[0013] Preferably, the upper surface of the connecting I-beam is provided with a groove, and the pressing surface of the pressing plate is located on one side of the groove.

[0014] Preferably, sliding components are installed on both inner walls of the U-shaped frame, and the sliding components include sliding rods. The sliding rods are fixedly installed in the inner cavity of the side wall of the U-shaped frame, and the sliding rods pass through the sliding through hole of the sliding block and are slidably connected to the sliding through hole. A spring is sleeved on the sliding rod, one end of the spring is fixedly connected to the inner top wall of the inner cavity of the side wall of the U-shaped frame, and the other end of the spring is fixedly connected to the upper surface of the sliding block.

[0015] Preferably, a button is fixedly mounted on the pawl.

[0016] Preferably, a handle is fixedly installed on the tool holder.

[0017] Preferably, a reinforcing rib is fixedly installed at the connection between the U-shaped frame and the pad.

[0018] Compared with related technologies, the plastic film cutting device provided by this utility model has the following beneficial effects:

[0019] This invention enables rapid single-handed downward cutting by linking a U-shaped frame, a sliding block, and a spring reset mechanism. The blade moves precisely along the guide rod, and the ratchet-pawl structure of the locking component effectively prevents the blade holder from slipping, ensuring that a single cut is completed and avoiding repeated operations. Attached Figure Description

[0020] Figure 1 One of the structural schematic diagrams of a preferred embodiment of the mulch film cutting device provided by this utility model;

[0021] Figure 2 A second schematic diagram of a preferred embodiment of the mulch film cutting device provided by this utility model;

[0022] Figure 3 for Figure 1 The diagram shows the structure of the U-shaped frame.

[0023] Figure 4 for Figure 2 A schematic diagram of the installation structure of the locking component on the tool holder is shown.

[0024] Figure 5 for Figure 1 The diagram shows the installation structure of the fixing device on the I-beam.

[0025] Figure 6 for Figure 5 The diagram shows the structure of the fixation device. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0028] Please see Figures 1 to 6 The present invention provides a mulch film cutting device, which includes a U-shaped frame 1, a blade holder 4, a blade 5, and a locking component 6.

[0029] In the embodiments of this utility model, please refer to Figure 1 , Figure 2 and Figure 3 The inner walls of both sides of the U-shaped frame 1 are equipped with sliding blocks 2 that are slidably connected. Specifically, the inner walls of both sides of the U-shaped frame 1 are equipped with sliding components 9, and the sliding components 9 include sliding rods 91. The sliding rods 91 are fixedly installed in the inner cavity of the side wall of the U-shaped frame 1, and the sliding rods 91 pass through the sliding through holes opened in the sliding blocks 2 and are slidably connected to the sliding through holes. A spring 92 is sleeved on the sliding rods 91. One end of the spring 92 is fixedly connected to the inner top wall of the inner cavity of the side wall of the U-shaped frame 1, and the other end of the spring 92 is fixedly connected to the upper surface of the sliding block 2.

[0030] A toothed plate 3 and a guide rod 31 are fixedly mounted between the two sliding blocks 2. A slidably connected tool holder 4 is installed on the guide rod 31, and a blade 5 is fixedly mounted on the tool holder 4 by screws. A handle 41 is fixedly mounted on the tool holder 4.

[0031] The bottom of the U-shaped frame 1 is also equipped with a clamp 8 for holding the mulch film.

[0032] It should be noted that when cutting the plastic film, the fixing device 8 is used to fix the plastic film, and then the handle 41 is pulled down to make the sliding block 2 slide down the sliding rod 91. At this time, the spring 92 is stretched, so the blade 5 cuts the plastic film. After the plastic film is cut, the handle 41 is released, and the blade 5 returns to its original position under the elastic force of the spring 93. This realizes the single-person hand-pressed quick cutting of plastic film without the need for electricity or other tools.

[0033] Furthermore, to avoid the problem of delayed reset caused by the elastic decay of spring 92 after long-term use, spring 92 is made of high carbon steel or silicon manganese alloy spring material. At the same time, in order to avoid the potential for metal parts to rust in the open environment and affect the service life, the key components in this application are made of galvanized or stainless steel and are provided with regular lubrication and maintenance.

[0034] In the embodiments of this utility model, please refer to Figure 2 and Figure 4 A locking component 6 is installed on the tool holder 4. The locking component 6 includes a rotating shaft 61 and a mounting rod 64. The rotating shaft 61 is rotatably mounted on the tool holder 4, and a gear 62 and a ratchet 63 are fixedly sleeved on the rotating shaft 61. The gear 62 is meshed with the toothed plate 3. The mounting rod 64 is fixedly mounted on the tool holder 4, and a rotatably connected pawl 65 is sleeved on the mounting rod 64. A torsion spring for driving the pawl 65 to abut against the ratchet 63 is also installed on the mounting rod 64, and a button 66 is fixedly installed on the pawl 65.

[0035] It should be noted that initially, the blade holder 4 is close to one side of the U-shaped frame 1, and the transmission torque of the ratchet 63 and the pawl 65 are in opposite directions. Therefore, the blade holder 4 cannot slide to the other side along the guide rod 31. Thus, the blade holder 4 cannot slide to the other side on the horizontal plane, which effectively ensures the stability of the blade 5 and avoids the problem that the blade holder 4 slides along the guide rod 31 when cutting the mulch film, resulting in incomplete cutting of the mulch film in one go and requiring repeated cutting by the workers.

[0036] When the width of the mulch film is greater than the cutting width of the blade 5, first cut the mulch film in half with the blade 5, then press down the button 66 so that the pawl 65 no longer engages with the pawl 65. At this time, the blade holder 4 can be slid sideways so that the blade 5 slides above the uncut mulch film. Then release the button 66 so that the pawl 65 engages with the ratchet 63, and then pull down the blade holder 4 so that the blade 5 can cut the mulch film.

[0037] After cutting is completed, slide the tool holder 4 along the guide rod 31 to the position of the U-shaped frame 1 that the tool holder 4 was close to at the beginning (at this time, the transmission torque of the ratchet 63 and the pawl 65 is in the positive direction). After sliding, the tool holder 4 will automatically lock.

[0038] In the embodiments of this utility model, please refer to Figure 1 , Figure 5and Figure 6 The bottom end of the U-shaped frame 1 is fixedly equipped with a pad 11, and a connecting I-beam 7 is fixedly mounted between the two pads 11. Two sets of fasteners 8 are provided and are installed on the connecting I-beam 7. The fastener 8 includes a Y-shaped plate 81, which passes through a groove 7a opened in the web of the connecting I-beam 7 and is slidably connected to the groove 7a. The end of the Y-shaped plate 81 through which abutting piece 811 that abuts against the web is fixedly installed. The connecting end of the Y-shaped plate 81 is fixedly equipped with an mounting plate 82, and an L-shaped plate 83 is fixedly installed on the mounting plate 82. A threaded screw 85 is inserted into the L-shaped plate 83, and a pressing plate 86 is fixedly installed at the bottom of the screw 85. The pressing plate 86 is arranged opposite to the upper surface of the connecting I-beam 7. A threaded fixing screw 84 is installed on the Y-shaped plate 81, and the Y-shaped plate 81 is fixed in position on the connecting I-beam 7 by the fixing screw 84.

[0039] It should be noted that the spacing between the two sets of fixing devices 8 is adjusted according to the width of the mulch film. Specifically, the Y-shaped plate 81 is used in conjunction with the abutment piece 811 to slide along the slide groove 7a until the spacing meets the requirements. Then, the fixing screw 84 is rotated to fix the Y-shaped plate 81 onto the connecting I-beam 7. Subsequently, the mulch film is laid on the connecting I-beam 7 between the two sets of fixing devices 8, and the screw 85 is rotated to press the pressing plate 86 onto the mulch film, thereby completing the fixing of the mulch film.

[0040] The upper surface of the connecting I-beam 7 is provided with a groove 7b, and the pressing surface of the pressing plate 86 is located on one side of the groove 7b, so that the pressing surface of the pressing plate 86 avoids the cutting path, avoids interference between the blade 5 and the fixed part 8, and ensures that the cutting edge is neat.

[0041] Among them, a reinforcing rib 12 is fixedly installed at the connection between the U-shaped frame 1 and the pad 11 to improve the overall rigidity.

[0042] Therefore, in this application, the U-shaped frame 1, sliding block 2 and spring 92 reset mechanism are linked to achieve one-handed rapid downward cutting. The blade 5 moves precisely along the guide rod 31. With the ratchet 63-pawl 65 structure of the locking component 6, the blade holder 4 is effectively prevented from slipping, ensuring that the cutting is completed in one operation and avoiding repeated operations. The fixing device 8 adopts the design of Y-shaped plate 81 and slide groove 7a, which supports free adjustment of the spacing along the connecting I-beam 7. Combined with the pressing plate 86 driven by the screw 85, it can be adapted to different widths of mulch film. The fixing screw 84 can quickly lock the position, improving versatility. The overall structure does not require a motor or complex transmission components, reducing manufacturing costs. The operation is entirely manual and suitable for environments without electricity, thus balancing economy and practicality.

[0043] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A plastic film cutting device, characterized in that, The U-shaped frame (1) includes sliding blocks (2) slidably connected to both inner walls. A toothed plate (3) and a guide rod (31) are fixedly mounted between the two sliding blocks (2). A slidably connected tool holder (4) is installed on the guide rod (31), and a locking component (6) is installed on the tool holder (4). The locking component (6) includes a rotating shaft (61) and a mounting rod (64). The rotating shaft (61) is rotatably mounted on the tool holder (4), and a gear (62) and a ratchet (63) are fixedly sleeved on the rotating shaft (61) and are coaxially arranged. The gear (62) meshes with the toothed plate (3). The mounting rod (64) is fixedly mounted on the tool holder (4), and a rotatably connected pawl (65) is sleeved on the mounting rod (64). A torsion spring for driving the pawl (65) to abut against the ratchet (63) is also installed on the mounting rod (64). The bottom of the U-shaped frame (1) is also equipped with a clamp (8) for holding the mulch film. The blade (5) is fixedly mounted on the blade holder (4) by screws.

2. The plastic film cutting device according to claim 1, characterized in that, The bottom plate of the U-shaped frame (1) is fixedly installed with a pad (11), and a connecting I-beam (7) is fixedly mounted between the two pads (11). The fastener (8) is provided in two sets and is installed on the connecting I-beam (7).

3. The plastic film cutting device according to claim 2, characterized in that, The fastener (8) includes a Y-shaped plate (81), which passes through a groove (7a) opened in the web of the I-beam (7) and is slidably connected to the groove (7a). The through end of the Y-shaped plate (81) is fixedly installed with an abutting piece (811) that abuts against the web. The connecting end of the Y-shaped plate (81) is fixedly installed with an mounting plate (82), and an L-shaped plate (83) is fixedly installed on the mounting plate (82). A threaded rod (85) is inserted into the L-shaped plate (83), and a pressing plate (86) is fixedly installed at the bottom of the rod (85). The pressing plate (86) is disposed opposite to the upper surface of the I-beam (7).

4. The plastic film cutting device according to claim 3, characterized in that, A threaded fixing screw (84) is installed on the Y-shaped plate (81) to fix the position of the Y-shaped plate (81) on the butt I-beam (7).

5. The plastic film cutting device according to claim 3, characterized in that, The upper surface of the connecting I-beam (7) is provided with a groove (7b), and the pressing surface of the pressing plate (86) is located on one side of the groove (7b).

6. The plastic film cutting device according to claim 1, characterized in that, The inner walls of both sides of the U-shaped frame (1) are equipped with sliding components (9), and the sliding components (9) include sliding rods (91). The sliding rods (91) are fixedly installed in the inner cavity of the side wall of the U-shaped frame (1), and the sliding rods (91) pass through the sliding through hole opened by the sliding block (2) and are slidably connected to the sliding through hole. A spring (92) is sleeved on the sliding rod (91). One end of the spring (92) is fixedly connected to the inner top wall of the inner cavity of the side wall of the U-shaped frame (1), and the other end of the spring (92) is fixedly connected to the upper surface of the sliding block (2).

7. The plastic film cutting device according to claim 1, characterized in that, A button (66) is fixedly installed on the pawl (65).

8. The plastic film cutting device according to claim 1, characterized in that, A handle (41) is fixedly installed on the tool holder (4).

9. The plastic film cutting device according to claim 1, characterized in that, A reinforcing rib (12) is fixedly installed at the connection between the U-shaped frame (1) and the pad (11).

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