Sisal hemp leaf cutter

Abstract

The utility model discloses a sisal leaf cutter, which belongs to the technical field of sisal leaf cutting and comprises a control rod, an upper cutter and a lower cutter, the lower cutter is arranged at the front end of the control rod, the upper cutter is positioned in the direction of the front end of the lower cutter, and a connecting rod capable of controlling the upper cutter to be close to or far away from the lower cutter is arranged in the control rod. A holding assembly capable of controlling the connecting rod is arranged at the tail end of the control rod, sisal hemp leaves can be cut off by controlling the upper cutter to be close to the lower cutter, the cutting operation of the sisal hemp leaves can be completed without waving or pulling the whole cutter, meanwhile, the purpose that the upper cutter is close to the lower cutter when being pulled is achieved, and therefore the sisal hemp leaves can be cut conveniently. And the upper cutter is not in contact with an operator, so that the problem that the upper cutter and the lower cutter are in contact with the body of the operator in the use process is not worried when the cutter is used.

Description

Technical Field

[0001] The utility model relates to the technical field of sisal leaf cutting, in particular to a sisal leaf cutter. Background Art

[0002] Sisal is a perennial tropical, hard-leafed fiber crop. Its fiber is tough, wear-resistant, salt-resistant, and corrosion-resistant, making it widely used in various industries, including transportation, fisheries, petroleum, and metallurgy, and possesses significant economic value. However, due to the limitations of sisal's growth morphology, conventional crop harvesting methods are ineffective in effectively harvesting sisal fields. The development of sisal harvesting machinery is challenging, and currently, sisal leaf harvesting is still primarily done by traditional manual labor. Due to the upward, slanting growth of sisal leaves and their sharp, hard thorns along their edges, cutting the leaves requires the operator to hold the leaf firmly in their hand while using a sickle to sever them. This wielding of the sickle poses significant safety risks.

[0003] For example, a new type of sickle with the publication number CN201854566U consists of a blade and a handle. The inner arc of the blade edge is raised at a large arc inclination angle, and the angle α between the line connecting the two end points of the inner arc of the blade edge and the horizontal line is in the range of 7° to 40°. The upper outer arc of the blade has one or more obvious goose-head-shaped raised transition arcs. When the sickle designed in this patent application is used to cut sisal leaves, the operator needs to hold the handle to move the blade from the sisal leaves. The back side is pulled and slid toward itself, so that the cutting edge on the blade head is used to cut the sisal leaves. In actual operation, the blade head needs to be used to cut the sisal leaves near the root, and the sisal leaves are cut off in combination with the operator's pulling action. However, in the process of controlling the pulling of the blade head, the cutting edge of the blade head will also be close to the operator's body. If the operator makes an error in the operation and causes the blade head to be pulled too much, it is easy to cause the cutting edge to scratch the operator's body. Therefore, this type of sickle has a great safety hazard when cutting sisal. Utility Model Content

[0004] The embodiment of the present utility model provides a sisal leaf cutter to solve the above-mentioned technical problems.

[0005] The embodiment of the present utility model adopts the following technical solution: it includes a control rod, an upper cutter and a lower cutter, the lower cutter is arranged at the front end of the control rod, the upper cutter is located in the front end direction of the lower cutter, a connecting rod is arranged inside the control rod to control the upper cutter to approach or move away from the lower cutter, and a holding component is arranged at the end of the control rod to control the connecting rod.

[0006] Preferably, a through hole is provided inside the control rod for the connecting rod to move, and the through hole passes through both ends of the control rod. A support block with a square column structure is provided at the front end of the connecting rod. The end of the support block is fixedly connected to the front end of the connecting rod. A groove is provided at the front end of the control rod for the support block to move. The shape of the groove matches the shape of the support block, and the groove and the through hole are connected to each other.

[0007] Preferably, the upper cutter includes an upper cutter holder and an upper blade, the upper cutter holder is horizontally placed on one side of the support block, and the upper cutter holder is fixedly connected to the support block, the cutting edge of the upper blade is arranged as an outer arc edge, the upper blade is arranged on the upper cutter holder, and the outer arc edge of the upper blade faces the lower cutter;

[0008] The lower cutter includes a lower knife holder and a lower blade. The lower knife holder is arranged on the control rod and is on the same side as the upper knife holder, and the lower knife holder is fixedly connected to the control rod. The cutting edge of the lower blade is set as an inner arc edge, and the cutting edge shape of the inner arc edge of the lower blade matches the cutting edge shape of the outer arc edge of the upper blade. The lower blade is arranged on the lower knife holder, and the inner arc edge of the lower blade faces the upper blade, that is, the cutting edge of the upper blade and the cutting edge of the lower blade are arranged opposite to each other.

[0009] Preferably, the holding assembly includes a holding frame and a pulling frame. The holding frame is made of a block with a groove in the middle to form a frame-like structure. The holding frame is fixedly connected to the end of the control rod. The pulling frame is also made of a block with a groove in the middle to form a frame-like structure. The pulling frame is arranged in the groove area of the holding frame and can be moved toward the control rod and the end of the holding frame in the groove area. The end of the connecting rod passes through the holding frame from the end of the through hole of the control rod and extends into the groove area, and the extended part of the end of the connecting rod is fixedly connected to the pull frame.

[0010] Preferably, a spring is provided at the end of the connecting rod and on the extension part of the groove area of the holding frame. The two ends of the spring are fixedly connected to the holding frame and the pull frame respectively, and under the tension of the spring, the pull frame in the natural state can be pulled toward the front end of the holding frame.

[0011] Preferably, the upper tool holder and the lower tool holder are respectively provided with mounting grooves for embedding and installing the corresponding upper blade and lower blade, and the upper and lower sides of the upper tool holder and the upper blade as well as the lower tool holder and the lower blade are provided with limiting holes.

[0012] At least one of the above technical solutions adopted in the embodiment of the present utility model can achieve the following beneficial effects:

[0013] The lower cutter designed by the present invention is located between the operator and the sisal leaves when cutting the sisal leaves, and the sisal leaves can only be cut when the upper cutter is controlled to move closer to the lower cutter. There is no need to wave or pull the entire cutter to complete the cutting operation of the sisal leaves. At the same time, the upper cutter is pulled to move closer to the lower cutter, and the upper cutter will not come into contact with the operator. Therefore, compared with the operating method of using a sickle to cut sisal leaves in the prior art, when using the present cutter, there is no need to worry about the upper cutter and the lower cutter coming into contact with the operator's body during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the split structure of the control rod and the connecting rod in the utility model;

[0018] Figure 4 The structure of the upper cutter and the lower cutter in this utility model is shown in FIG. Figure 1 ;

[0019] Figure 5 The structure of the upper cutter and the lower cutter in this utility model is shown in FIG. Figure 2 ;

[0020] Figure 6 This is a schematic diagram of the structure of the grip assembly in the present invention;

[0021] Figure 7 This is a schematic diagram of the split structure of the upper cutter and the lower cutter in the utility model.

[0022] Reference numerals

[0023] Control rod 1, through hole 11, groove 12, upper cutter 2, upper knife holder 21, upper blade 22, placement groove 23, limiting hole 24, lower cutter 3, lower knife holder 31, lower blade 32, connecting rod 4, support block 41, holding assembly 5, holding frame 51, pulling frame 52, cutting groove 53, spring 6. DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will provide a clear and complete description of the technical solutions of the present invention in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0025] The technical solutions provided by various embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0026] The embodiment of the utility model provides a sisal leaf cutter, comprising a control rod 1, an upper cutter 2 and a lower cutter 3;

[0027] Refer to the attached Figure 1 and 2 As shown, the lower cutter 3 is arranged at the front end of the control rod 1, the upper cutter 2 is located in the front end direction of the lower cutter 3, and a connecting rod 4 is provided inside the control rod 1 to control the upper cutter 2 to approach or move away from the lower cutter 3. A holding component 5 is provided at the end of the control rod 1 to control the connecting rod 4.

[0028] Refer to the attached Figure 3 As shown, the control rod 1 is provided with a through hole 11 for the connecting rod 4 to move. The through hole 11 runs through both ends of the control rod 1. A support block 41 with a square column structure is provided at the front end of the connecting rod 4. The end of the support block 41 is fixedly connected to the front end of the connecting rod 4. A groove 12 for the support block 41 to move is provided at the front end of the control rod 1. The shape of the groove 12 matches the shape of the support block 41, and the groove 12 is connected to the through hole 11.

[0029] When the utility model is in use, the operator can control the holding assembly 5 to move the entire cutter, place the gap between the upper cutter 2 and the lower cutter 3 on both sides of the sisal leaves to be cut, and then control the holding assembly 5 to pull the connecting rod 4, so that the connecting rod 4 can drive the front support block 41 and the upper cutter 2 to move closer to the lower cutter 3. As the gap between the upper cutter 2 and the lower cutter 3 gradually narrows, the sisal leaves will be cut by the upper cutter 2 and the lower cutter 3.

[0030] Secondly, when the support block 41 moves in the groove 12 at the front end of the control rod 1, the groove 12, which is shaped to match the support block 41, can restrict the movement of the support block 41, so that the support block 41 does not rotate in the groove 12, thereby preventing the upper cutter 2 from rotating and failing to cooperate with the lower cutter 3 to cut the sisal leaves;

[0031] Compared with the prior art method of using a sickle to cut sisal leaves, the lower cutter 3 designed in the present invention is located between the operator and the sisal leaves when cutting the sisal leaves, and the sisal leaves can only be cut when the upper cutter 2 is controlled to move closer to the lower cutter 3. There is no need to wave or pull the entire cutter to complete the sisal leaf cutting operation. At the same time, the upper cutter 2 is pulled to move closer to the lower cutter 3, and the upper cutter 2 will not come into contact with the operator. Therefore, there is no need to worry about the upper cutter 2 and the lower cutter 3 coming into contact with the operator's body during use.

[0032] In a further preferred embodiment, referring to the attached Figure 4 and 5 As shown, the upper cutter 2 includes an upper cutter holder 21 and an upper blade 22. The upper cutter holder 21 is horizontally placed on one side of the support block 41, and the upper cutter holder 21 is fixedly connected to the support block 41. The cutting edge of the upper blade 22 is set as an outer arc edge. The upper blade 22 is set on the upper cutter holder 21, and the outer arc edge of the upper blade 22 faces the lower cutter 3.

[0033] The lower cutter 3 includes a lower blade holder 31 and a lower blade 32. The lower blade holder 31 is arranged on the control rod 1 and is located on the same side as the upper blade holder 21. The lower blade holder 31 is fixedly connected to the control rod 1. The cutting edge of the lower blade 32 is arranged with an inner arc edge, and the shape of the cutting edge of the inner arc edge of the lower blade 32 matches the shape of the outer arc edge of the upper blade 22. The lower blade 32 is arranged on the lower blade holder 31, and the inner arc edge of the cutting edge of the lower blade 32 faces the upper blade 22, that is, the cutting edge of the upper blade 22 and the cutting edge of the lower blade 32 are arranged opposite to each other.

[0034] When cutting sisal leaves, the upper blade 22 and the lower blade 32 need to be placed on both sides of the sisal leaves to be cut. When the control holding assembly 5 pulls the upper blade holder 21 and the upper blade 22, since the lower blade holder 31 is fixedly connected to the control rod 1, the outer arc edge of the upper blade 22 will squeeze and cut the surface of the sisal leaf when it contacts one side of the sisal leaf. At the same time, it drives the cut part of the sisal leaf to move toward the edge of the lower blade 32. When the other side of the cut sisal leaf contacts the inner arc edge of the lower blade 32, it will be cut due to the squeezing of the edge. Moreover, under the mutual cooperation of the edge of the upper blade 22 and the lower blade 32, both sides of the sisal leaf are subjected to the squeezing and cutting operation.

[0035] Secondly, since the outer surfaces of both sides of the sisal leaf are bulging arc-shaped, when cutting the sisal leaf, the entire cutter can be slightly pushed toward the sisal leaf so that the cut sisal leaf can first contact the cutting edge of the lower blade 32. At this time, the cutting edge of the inner arc edge can form a corresponding state with the bulging shape of the outer surface of the sisal leaf and play a certain limiting role on the outer surface of the sisal leaf, so that the sisal leaf will not produce a large range of displacement from the cutting edge of the lower blade 32.

[0036] At the same time, by controlling the upper blade 22 to move toward the lower blade 32, the cutting edges of the upper blade 22 and the lower blade 32 are brought close to each other to perform cutting operations on the sisal leaves from both sides. When cutting the sisal leaves, good safety is guaranteed, and there is no need to use a sickle to swing and pull the cutter head to complete the cutting as in the prior art, which can easily cause the cutting edge of the cutter head to approach the operator and cause scratches.

[0037] In a further preferred embodiment, referring to the attached Figure 3 and 6 As shown, the holding assembly 5 includes a holding frame 51 and a pulling frame 52, the holding frame 51 is made of a block with a frame-like structure formed by a groove 53 in the middle, the holding frame 51 is fixedly connected to the end of the control rod 1, the pulling frame 52 is also made of a block with a frame-like structure formed by a groove 53 in the middle, the pulling frame 52 is arranged in the groove 53 area of the holding frame 51, and can be moved in the groove 53 area of the holding frame 51 toward the control rod 1 and the end of the holding frame 51, the end of the connecting rod 4 passes through the holding frame 51 from the end of the through hole 11 of the control rod 1 and extends into the groove 53 area, and the extended portion of the end of the connecting rod 4 is fixedly connected to the pulling frame 52;

[0038] During use, the outer portion of the end of the holding frame 51 can be used for the operator's palm to support the control of the entire cutter, while the cutting groove 53 area in the middle of the pull frame 52 is used for the operator's fingers to be placed. During operation, the operator hooks his fingers and performs a fist-like gesture to pull the pull frame 52 toward the end of the holding frame 51, so that the pull frame 52 can drive the connecting rod 4 and the support block 41 to move, so that the upper cutter 2 can move closer to the lower cutter 3, thereby cutting the sisal leaves;

[0039] At the same time, by pulling the pull frame 52 to implement movement control of the upper cutter 2 to realize the operation mode of cutting sisal leaves, the operator can complete the operation not only with one hand, but also with both hands. In actual application, the operator can control the cutter with one hand and hold the sisal leaves to be cut with the other hand to prevent the cut sisal leaves from accidentally injuring the operator when they fall.

[0040] In a further preferred embodiment, referring to the attached Figure 6As shown, a spring 6 is sleeved on the end of the connecting rod 4 and the extended portion located in the groove 53 area of the holding frame 51. The two ends of the spring 6 are respectively fixedly connected to the holding frame 51 and the pulling frame 52. Under the tension of the spring 6, the pulling frame 52 in the natural state can be pulled toward the front end of the holding frame 51.

[0041] After the sisal leaves are cut, the operator does not need to manually reset the pull frame 52. He only needs to release the hooked fingers, and then under the tension of the spring 6, the pull frame 52 can be pulled toward the front end of the holding frame 51 to reset the pull frame 52 and separate the upper cutter 2 and the lower cutter 3 at the front end, so as to facilitate the subsequent placement of the upper cutter 2 and the lower cutter 3 on both sides of the sisal leaves to be cut for cutting.

[0042] In a further preferred embodiment, referring to the attached Figure 7 As shown, the upper tool holder 21 and the lower tool holder 31 are respectively provided with a placement groove 23 for embedding and installing the corresponding upper blade 22 and the lower blade 32, and the upper and lower sides of the upper tool holder 21 and the upper blade 22 and the lower tool holder 31 and the lower blade 32 are provided with a limiting hole 24;

[0043] Taking the installation of the upper tool holder 21 and the upper blade 22 as an example, a bolt is used to pass through the limiting hole 24 on one side of the upper tool holder 21, then through the limiting hole 24 of the upper blade 22, and then out of the limiting hole 24 on the other side of the upper tool holder 21. Then, a nut matching the bolt is used to thread the part where the thread end of the bolt passes through, so that the upper blade 22 can be limited in the placement groove 23 of the upper tool holder 21, so that the upper blade 22 and the lower blade 32 can be replaced when they are worn during use.

[0044] The above description is merely an embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of the claims of the present invention.

Claims

1. A sisal leaf cutter, characterized in that: It comprises a control rod (1), an upper cutter (2) and a lower cutter (3); The lower cutter (3) is arranged at the front end of the control rod (1); The upper cutter (2) is located at the front end direction of the lower cutter (3); A connecting rod (4) is provided inside the control rod (1) and can control the upper cutter (2) to approach or move away from the lower cutter (3); A gripping assembly (5) capable of controlling the connecting rod (4) is provided at the end of the control rod (1).

2. The sisal leaf cutter according to claim 1, characterized in that: The control rod (1) is provided with a through hole (11) for the connecting rod (4) to move, and the through hole (11) passes through both ends of the control rod (1); A support block (41) with a square column structure is provided at the front end of the connecting rod (4), and the end of the support block (41) is fixedly connected to the front end of the connecting rod (4); A groove (12) for the support block (41) to move is provided at the front end of the control rod (1). The shape of the groove (12) matches the shape of the support block (41), and the groove (12) is communicated with the through hole (11).

3. The sisal leaf cutter according to claim 2, characterized in that: The upper cutter (2) comprises an upper cutter holder (21) and an upper blade (22); the upper cutter holder (21) is placed horizontally on one side of the support block (41), and the upper cutter holder (21) is fixedly connected to the support block (41); The cutting edge of the upper blade (22) is arranged as an outer arc edge. The upper blade (22) is arranged on the upper blade holder (21), and the outer arc edge of the upper blade (22) faces the lower cutter (3).

4. The sisal leaf cutter according to claim 3, characterized in that: The lower cutter (3) comprises a lower cutter holder (31) and a lower blade (32); the lower cutter holder (31) is arranged on the control rod (1) and is located on the same side as the upper cutter holder (21); and the lower cutter holder (31) is fixedly connected to the control rod (1); The cutting edge of the lower blade (32) is arranged as an inner arc edge, and the cutting edge shape of the inner arc edge of the lower blade (32) matches the cutting edge shape of the outer arc edge of the upper blade (22). The lower blade (32) is arranged on the lower blade holder (31), and the cutting edge of the inner arc edge of the lower blade (32) faces the upper blade (22), that is, the cutting edge of the upper blade (22) and the cutting edge of the lower blade (32) are arranged opposite to each other.

5. The sisal leaf cutter according to claim 2, characterized in that: The holding assembly (5) comprises a holding frame (51) and a pulling frame (52); The holding frame (51) is made of a block having a frame-like structure formed by a groove (53) in the middle, and the holding frame (51) is fixedly connected to the end of the control rod (1); The pull frame (52) is also made of a block having a frame-like structure formed by a groove (53) in the middle. The pull frame (52) is arranged in the groove (53) area of the grip frame (51) and can move in the groove (53) area of the grip frame (51) toward the control rod (1) and the end of the grip frame (51). The end of the connecting rod (4) passes through the gripping frame (51) from the end of the through hole (11) of the control rod (1) and extends into the area of the cutting groove (53), and the extended portion of the end of the connecting rod (4) is fixedly connected to the pull frame (52).

6. The sisal leaf cutter according to claim 5, characterized in that: A spring (6) is sleeved on the end of the connecting rod (4) and on an extension portion of the groove (53) area of the holding frame (51). The two ends of the spring (6) are fixedly connected to the holding frame (51) and the pull frame (52), respectively, and under the pulling force of the spring (6), the pull frame (52) in a natural state can be pulled toward the front end direction of the holding frame (51).

7. The sisal leaf cutter according to claim 4, characterized in that: The upper tool holder (21) and the lower tool holder (31) are respectively provided with a placement groove (23) for embedding and installing the corresponding upper blade (22) and the lower blade (32), and the upper and lower sides of the upper tool holder (21) and the upper blade (22) and the lower tool holder (31) and the lower blade (32) are respectively provided with a limiting hole (24).

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