Cutting tool pickup and release mechanism for a rubber tapping machine

Abstract

The utility model discloses a knife collecting and releasing mechanism of rubber tapping machine, solved the technical problem that current rubber tapping knife in prior art cannot clean the residual wood chips or rubber line on the rubber tapping knife by itself. The utility model provides a knife collecting and releasing mechanism of rubber tapping machine, including casing, swing frame, drive part, blade support, elastic part, blade and lever, swing frame rotatory connection casing, and drive part provides the driving force of swing frame rotation, and swing frame includes the transmission end of rotation connection with blade support, and elastic part is elastically connected blade support and swing frame, and blade is installed in blade support, and lever is installed in casing, and the rotation of swing frame drives blade support movement, and lever includes the levering end of protruding from casing, and the partial movement path of levering end and blade support exists interference, and levering end can resist and push blade support, and makes blade support overcome the force of action of elastic part and rotates relative to swing frame to avoid levering end, and elastic part drives blade support to rotate and resets after blade support passing levering end.

Description

Technical Field

[0001] This utility model relates to the field of rubber tapping machines, and in particular to the blade retraction and release mechanism of rubber tapping machines. Background Technology

[0002] A rubber tapping machine is used for tapping rubber trees. It mainly consists of a tapping blade, frame, support and fixing devices, a latex collector, and a related control system. These devices collect latex by manually or semi-automatically cutting the bark of the rubber tree.

[0003] The rubber tapping knife is used to cut the bark of rubber trees. During the tapping process, tree debris or latex streaks formed by solidified resin can easily remain on the tapping knife, causing it to run dry during subsequent tapping and thus affecting tapping efficiency. Utility Model Content

[0004] This utility model proposes a blade retraction and release mechanism for a rubber tapping machine to overcome the shortcomings of the prior art, thereby solving the technical problem that existing rubber tapping blades cannot clean the residual tree debris or rubber lines on the blades themselves.

[0005] To achieve the above technical objectives, the present invention proposes a rubber tapping machine with a blade retraction and release mechanism, comprising: case; Blade holder; A swing frame rotatably connected to the housing, the swing frame including a transmission end rotatably connected to the blade holder; A driving component that provides the driving force for the rotation of the swing frame; An elastic element that elastically connects the blade holder and the swing frame; The blade, which is mounted on the blade holder; and, The lever, which is mounted on the housing, The rotation of the swing frame drives the blade holder to move, switching between the blade placement position and the blade retraction position. The lever includes a toggle end protruding from the housing. The toggle end interferes with part of the movement path of the blade holder. The toggle end can push against the blade holder, so that the blade holder overcomes the force of the elastic element and rotates relative to the swing frame to avoid the toggle end. After the blade holder passes the toggle end, the elastic element drives the blade holder to rotate and reset relative to the swing frame.

[0006] The present invention relates to a blade retraction and release mechanism for a rubber tapper. The blade support is rotatably connected to a swing frame. The actuating end of a lever interferes with part of the blade support's movement path, causing the blade support, which moves with the swing frame, to abut against the actuating end. As the swing frame continues to move, the actuating end pushes against the blade support, causing the blade support to overcome the elastic force of the elastic element and rotate relative to the swing frame to avoid the actuating end. After the blade support passes the actuating end, the elastic element returns the blade support to its original position, causing the blade to move rapidly. This achieves blade springing and automatically cleans the adhering tree debris and rubber lines from the blade. This reduces or avoids the occurrence of blades running dry, improving the tapping efficiency of the rubber tapper. Operators also do not need to constantly monitor whether there is debris remaining on the blade, reducing their workload.

[0007] Preferably, the lever is rotatably connected to the housing, the driving member provides the driving force for the rotation of the lever, and the rotation direction of the lever is opposite to the rotation direction of the swing frame.

[0008] By adopting the aforementioned technical solution, since the rotation direction of the lever is opposite to that of the swing frame, the interaction time between the lever and the blade holder is accelerated. This allows the actuating end of the lever to push the blade holder to rotate more quickly and to separate from the blade holder more quickly. As a result, the blade holder can have greater acceleration during rotation. Compared to the technical solution where the lever is fixed, the blade holder can have a larger rotation angle under the action of inertia, and the elastic element can also have greater elastic deformation. This increases the reset speed of the blade holder driven by the elastic reset of the elastic element, allowing the blade to reset more quickly and perform a spring-loaded action, effectively increasing the cleaning effect of the blade.

[0009] Preferably, the lever is rotatably connected to the swing frame, and the drive member is drively connected to one of the lever and the swing frame to provide rotational driving force to the lever and the swing frame.

[0010] By adopting the aforementioned technical solution, since the lever and the swing frame are rotatably connected, and the lever and the swing frame have separate rotatable connecting housings, the lever and the swing frame form a linkage mechanism. The movement of either one will drive the other to move accordingly. Thus, the driving component does not need to be separately connected to the lever and the swing frame, simplifying the connection structure between the driving component and the lever and the swing frame.

[0011] Preferably, the rotational connection point between the lever and the swing frame constitutes a force transmission part, the rotational connection point between the lever and the housing constitutes a first fulcrum, and the rotational connection point between the swing frame and the housing constitutes a second fulcrum. The force-transmitting part and the actuating end are located on opposite sides of the first fulcrum, and the force-transmitting part and the transmission end are located on the same side of the second fulcrum; or... The force transmission part and the actuating end are located on the same side of the first fulcrum, and the force transmission part and the transmission end are located on opposite sides of the second fulcrum.

[0012] By adopting the aforementioned technical solution and through two structures, the rotation direction of the lever is opposite to the rotation direction of the swing frame.

[0013] Preferably, one of the lever and the swing frame is provided with a rotatable connection hole, and the other is provided with a rotating shaft that rotatably engages with the rotatable connection hole, so that the lever and the swing frame are rotatably connected, and the rotatable connection hole is constructed as an oblong hole.

[0014] Using the aforementioned technical solution, since both the lever and the swing frame are rotatably connected to the housing, the lever and the swing frame move along different trajectories. The rotatable connection hole between the two is constructed as an oblong hole. On the one hand, the oblong hole can absorb the changes in the connection position between the two caused by the different rotation trajectories, ensuring that the two maintain a rotatable connection state during rotation. On the other hand, the two ends of the oblong hole can limit the rotatable angle of the two, thereby limiting the stroke of the retracting and releasing mechanism.

[0015] Preferably, the lever includes a first driving part, and the swing frame includes a second driving part. The driving member is transmittedly connected to the first driving part and the second driving part to drive the lever and the swing frame to rotate. The rotatable connection point between the lever and the housing forms a first fulcrum, and the actuating end, the first fulcrum, and the first driving part form a first lever. The rotatable connection point between the swing frame and the housing forms a second fulcrum, and the transmission end, the second fulcrum, and the second drive unit form a second lever. One of the first lever and the second lever is constructed as a first-type lever, and the other is constructed as a third-type lever.

[0016] Using the aforementioned technical solution, another structure is used to achieve a rotation direction of the lever that is opposite to the rotation direction of the swing frame.

[0017] Preferably, the lever is fixedly connected to the housing, and the driving component is driven by the swing frame.

[0018] By adopting the aforementioned technical solution, through the fixed connection between the lever and the housing, the driving component only needs to drive the swing frame to rotate, which simplifies the structure of the knife retraction and placement mechanism and helps to reduce product costs.

[0019] Preferably, the blade holder is provided with a rib for cooperating with the actuating end, and the rib extends protruding towards the rotational connection point between the swing frame and the housing.

[0020] By adopting the aforementioned technical solution, since the blade holder is provided with a rib that cooperates with the actuating end, the actuating end is prevented from contacting the part of the blade holder that is connected to the blade, thus preventing the actuating end from affecting the stability of the blade installed on the blade holder.

[0021] Preferably, the blade holder has a rotation axis A1 that rotates about the swing frame, the straight-line distance between the connection point of the elastic element and the blade holder and the rotation axis A1 is L1, the straight-line distance between the end of the blade near the rubber tree and the rotation axis A1 is L2, and L2 / L1≥0.15.

[0022] Using the aforementioned technical solution, when the elastic element is reset, the straight-line distance L1 between the connection point of the elastic element and the blade holder and the rotation axis A1 constitutes the length of the force arm, and the straight-line distance between the blade tip and the rotation axis A1 constitutes the length of the resistance arm. By setting the ratio between the straight-line distance between the connection point of the elastic element and the blade holder and the rotation axis A1 and the straight-line distance between the blade tip and the rotation axis A1 to be greater than or equal to 0.5, the blade tip movement speed is avoided from being too low due to the resistance arm being too short. This ensures that the blade retraction and release mechanism can provide sufficient speed for the blade during the retraction and release process, thereby ensuring that the blade has sufficient ability to clean tree debris and glue lines. On the other hand, the lever and the blade holder do not need to increase the cooperation distance between them in order to increase the reset speed of the blade holder, which helps to reduce costs.

[0023] This utility model also proposes a rubber tapping machine, including the blade retraction and release mechanism of any of the aforementioned technical solutions.

[0024] The rubber tapping machine proposed in this utility model has all the technical effects of all the aforementioned technical solutions because it adopts the blade retraction and release mechanism of any of the aforementioned technical solutions.

[0025] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the rubber tapping machine in an embodiment of the present utility model; Figure 2 This is an exploded view of the blade retraction and release mechanism in an embodiment of this utility model; Figure 3 This is a schematic diagram of the blade retraction and placement mechanism in an embodiment of this utility model; Figure 4 This is a schematic diagram of the swing frame in an embodiment of the present invention; Figure 5 This is a schematic diagram of the blade holder of the blade retraction and placement mechanism with the upper shell removed in the embodiment of this utility model in the blade retraction position; Figure 6 This is a schematic diagram showing the blade support of the blade retraction and release mechanism (with the upper shell removed) abutting against the lever during its movement from the blade retraction position to the blade release position in an embodiment of this utility model. Figure 7 This is a schematic diagram of the blade holder of the blade receiving and releasing mechanism with the upper shell removed in the embodiment of this utility model in the blade releasing position; Figure 8 This is a schematic diagram showing the blade support of the blade release and retraction mechanism (with the upper shell removed) moving from the blade release position to the blade retraction position and abutting against the lever in an embodiment of this utility model. Figure 9 This is a schematic diagram of the swing frame and lever in an embodiment of the present invention; Figure 10 This is another schematic diagram of the swing frame and lever in an embodiment of this utility model; Figure 11 This is another schematic diagram of the swing frame and lever in an embodiment of this utility model; Figure 12 This is a schematic diagram showing the positional relationship between the blade, blade holder, and elastic element in an embodiment of this utility model.

[0027] Figure label: 10. Rubber tree; 20. Guide rail; 30. Walking support frame; 40. Drive unit; 50. Tool retraction and release mechanism; 100. Shell; 200, swing frame; 210, transmission end; 220, second fulcrum; 230, rotating connection hole; 240, second drive unit; 300. Blade holder; 310. Rib removal; 400, lever; 410, actuating end; 420, force transmission part; 430, first fulcrum; 440, rotating shaft; 450, first driving part; 500. Elastic components; 600. Drive components; 700, blade; 710, blade tip. Detailed Implementation

[0028] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" or "several" means two or more, unless otherwise expressly defined.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Example 1: like Figures 1 to 8 As shown, the blade retraction and release mechanism 50 of the rubber tapping machine proposed in this embodiment includes a housing 100, a swing frame 200, a blade 700, a blade support 300, an elastic element 500, a driving element 600, and a lever 400. The blade 700 is used for tapping rubber, i.e., cutting the bark of the rubber tree 10, and is mounted on the blade support 300. The swing frame 200 is rotatably connected to the housing 100 and includes a transmission end 210 rotatably connected to the blade support 300. The elastic element 500 elastically connects the blade support 300 and the swing frame 200. The lever 400 is mounted on the housing 100.

[0033] The drive member 600 provides the driving force for the rotation of the swing frame 200, thereby driving the swing frame 200 to rotate. The rotation of the swing frame 200 drives the blade holder 300 to move, thereby allowing the blade holder 300 to switch between the blade placement position and the blade retraction position. The lever 400 includes a toggle end 410 protruding from the housing 100. The toggle end 410 interferes with part of the movement path of the blade holder 300, allowing the toggle end 410 to push against the blade holder 300. The toggle end 410 pushes against the blade holder 300, causing the blade holder 300 to overcome the elastic force of the elastic member 500 and rotate relative to the swing frame 200 to avoid the toggle end 410. After the toggle end 410 passes the blade holder 300, the elastic member 500 elastically resets, and the elastic reset of the elastic member 500 causes the blade holder 300 to rotate relative to the swing frame 200 to reset.

[0034] The rotational reset of the blade holder 300 under the elastic reset action of the elastic element 500 causes the blade 700 to move rapidly, thereby removing residual tree debris and glue lines from the blade 700 and achieving automatic cleaning of the blade 700.

[0035] The present invention relates to a blade retraction and release mechanism for a rubber tapping machine. A blade holder 300 is rotatably connected to a swing frame 200. Interference exists between the actuating end 410 of a lever 400 and part of the movement path of the blade holder 300. This causes the blade holder 300, moving with the swing frame 200, to abut against the actuating end 410. As the swing frame 200 continues to move, the actuating end 410 pushes against the blade holder 300, causing the blade holder 300 to overcome the elastic force of the elastic element 500 and rotate relative to the swing frame 200 to avoid collision. The actuating end 410 and the elastic element 500 elastically reset after the blade support 300 passes the actuating end 410, thereby driving the blade support 300 to rotate relative to the swing frame 200 and reset, causing the blade 700 to move quickly. This achieves the "springing" of the blade 700 and automatically cleans the tree debris and glue lines attached to the blade 700. In this way, the occurrence of the blade 700 running empty is reduced or avoided, the rubber tapping efficiency of the rubber tapper is improved, and the operator does not need to pay attention to whether there are residual debris on the blade 700, thus reducing the operator's burden.

[0036] In this embodiment, the housing 100 includes an upper housing and a lower housing. The upper housing and the lower housing are joined together to form a storage space for the drive component, and the drive component reciprocates within the storage space.

[0037] In this embodiment, the elastic element 500 is a tension spring. For example... Figures 4 to 6 As shown, the swing frame 200 moves from the retracted blade state to the extended blade state. The tension spring is stretched under the action of the actuating end 410, and elastically contracts and returns to its original position when the actuating end 410 separates from the blade holder 300. Figure 6 , Figure 7As shown, the swing frame 200 moves from the knife-releasing state to the knife-retracting state. Under the action of the actuating end 410, the tension spring will be twisted and deformed into an arched "shrimp shape", and will elastically reset when the actuating end 410 separates from the blade 700.

[0038] In some other embodiments, the elastic element 500 may also be a torsion spring.

[0039] In some other embodiments, the elastic element 500 may also be other structures or components capable of elastic deformation and elastic reset.

[0040] In this embodiment, the drive member 600 includes a slider that can slide relative to the housing 100. The slider is driven by a cam that cooperates with the drive shaft to reciprocate in a linear direction within the housing 100. The slider is connected to the swing frame 200, so that the reciprocating motion of the slider drives the swing frame 200 to rotate and switch between a first position and a second position.

[0041] In some other embodiments, the slider may also be driven by other components to reciprocate within the housing 100, thereby causing the swing frame 200 to rotate and switch between a first position and a second position, for example, by a lever.

[0042] Example 2: Based on Example 1, such as Figures 2 to 8 As shown, in this embodiment, the blade holder 300 is provided with a rib 310 for cooperating with the actuating end 410. The rib 310 protrudes and extends toward the rotational connection point between the swing frame 200 and the housing 100.

[0043] The rib 310 can be integrally formed on the blade holder 300, or the rib 310 can be a separate component fixedly connected to the blade holder 300.

[0044] Because the blade holder 300 is provided with a rib 310 that cooperates with the actuating end 410, the actuating end 410 is prevented from contacting the part of the blade holder 300 that is connected to the blade 700, and the actuating end 410's movement of the blade holder 300 is prevented from affecting the stability of the blade 700 installed on the blade holder 300.

[0045] The rib 310 is arranged in a V shape, and the V-shaped opening of the rib 310 faces the rotational connection point between the blade support 300 and the swing frame 200.

[0046] The actuating end 410, which cooperates with the actuating rib 310, has a first driving surface and a second driving surface. The first driving surface is used to push against the actuating rib 310 during the movement of the blade holder 300 from the retracted position to the extended position, and the second driving surface is used to push against the actuating rib 310 during the movement of the blade holder 300 from the extended position to the retracted position. The first driving surface and the second driving surface are inclined from the rubber tree 10 towards the actuating rib 310 to reduce the contact area between the two during the movement of the actuating end 410 against the actuating rib 310, thereby reducing the movement resistance.

[0047] Example 3: Based on all the aforementioned embodiments, such as Figures 5 to 8 As shown, in this embodiment, the lever 400 is rotatably connected to the housing 100, and the driving member 600 provides the driving force for the lever 400 to rotate. The rotation direction of the lever 400 is opposite to the rotation direction of the swing frame 200.

[0048] Because the rotation direction of the lever 400 is opposite to that of the swing frame 200, the interaction time between the lever 400 and the blade holder 300 is accelerated. This allows the actuating end 410 of the lever 400 to push the blade holder 300 to rotate more quickly and to separate from the blade holder 300 more quickly. As a result, the blade holder 300 can have a greater acceleration during rotation. Compared to the fixed setting of the lever 400, the blade holder 300 can have a larger rotation angle under inertia, and the elastic element 500 can also have a greater elastic deformation. This increases the reset speed of the blade holder 300 driven by the elastic reset of the elastic element 500, allowing the blade 700 to reset more quickly and perform a spring-loaded action, effectively increasing the cleaning effect of the blade 700.

[0049] refer to Figures 5 to 7 This demonstrates the engagement process between the actuating end 410 and the blade holder 300 as the blade holder 300 moves from the retracted position to the extended position. (Reference) Figure 5 The blade holder 300 is in the retracted position. The blade holder 300 rotates clockwise as shown in the figure, thus moving from the retracted position to the extended position. (Reference) Figure 6 During the movement of the blade holder 300 from the retracted position to the extended position, the actuating end 410 pushes against the blade holder 300, causing the blade holder 300 to rotate clockwise. This can be understood as the elastic element 500 being stretched under force. After a certain angle of rotation, the blade holder 300 passes the actuating end 410, and the elastic element 500 elastically resets, causing the blade holder 300 to rotate relative to the swing frame 200 and reset, thus achieving the rapid movement and release of the blade 700. (Reference) Figure 7 The blade holder eventually moves to the blade placement position, and the blade 700 has completed its spring-loaded operation, ready to cut the rubber tree 10.

[0050] refer to Figure 5 , Figure 7 , Figure 8 The demonstration showed the interaction between the actuating end 410 and the blade holder 300 as the blade holder 300 moves from the blade placement position to the blade retraction position. Figure 7 In the diagram, the blade holder 300 is in the blade-laying position. The blade holder 300 rotates counter-clockwise as shown in the figure, thus moving from the blade-laying position to the blade-retracting position. (Reference) Figure 8 During the movement of the blade holder 300 from the blade placement position to the blade retraction position, the actuating end 410 pushes against the blade holder 300, causing the blade holder 300 to rotate counterclockwise. This can be understood as the elastic element 500 being twisted and deformed under force. After a certain angle of rotation, the blade holder 300 passes the actuating end 410, and the elastic element 500 elastically returns to its original position, causing the blade holder 300 to rotate relative to the swing frame 200 and return to its original position, thus achieving the rapid movement and springing of the blade 700. (Reference) Figure 5 The blade holder eventually moves to the retracted position, and the blade 700 has completed its ejection.

[0051] Example 4: Based on Embodiment 3, in this embodiment, the lever 400 is rotatably connected to the swing frame 200, and the driving member 600 is drivingly connected to one of the lever 400 and the swing frame 200 to provide rotational driving force to the lever 400 and the swing frame 200.

[0052] In this embodiment, the lever 400 includes a driving end away from the actuating end 410. The driving end is rotatably connected to the swing frame 200, and the driving member 600 is connected to the swing frame 200 in a transmission manner, so that the rotational motion of the swing frame 200 drives the lever 400 to move.

[0053] In some other embodiments, the lever 400 may be rotatably connected to the swing frame 200 at other positions.

[0054] In some other embodiments, the drive unit 600 may be connected to the lever 400, so that the rotational movement of the lever 400 relative to the housing 100 drives the swing frame 200 to move.

[0055] Because the lever 400 is rotatably connected to the swing frame 200, and the lever 400 and the swing frame 200 are respectively rotatably connected to the housing 100, the lever 400 and the swing frame 200 form a linkage mechanism. The movement of either one will drive the other to move accordingly. Therefore, the drive component 600 does not need to separately drive the lever 400 and the swing frame 200, which simplifies the connection structure between the drive component 600 and the lever 400 and the swing frame 200.

[0056] Example 5: Based on Example 4, such as Figure 10As shown, in this embodiment, the rotational connection point between the lever 400 and the swing frame 200 constitutes the force transmission part 420, the rotational connection point between the lever 400 and the housing 100 constitutes the first fulcrum 430, and the rotational connection point between the swing frame 200 and the housing 100 constitutes the second fulcrum 220. The force transmission part 420 and the actuating end 410 are located on opposite sides of the first fulcrum 430, and the transmission end 210 and the force transmission part 420 are located on the same side of the second fulcrum 220.

[0057] The rotational connection point between the lever 400 and the swing frame 200 constitutes a force transmission part 420, enabling the movement of one of the lever 400 and the swing frame 200 to drive the movement of the other. The force transmission part 420 and the actuating end 410 of the lever 400 are located on opposite sides of the first fulcrum 430, such that the movement direction of the force transmission part 420 and the actuating end 410 are opposite; the force transmission part 420 and the transmission end 210 of the swing frame 200 are located on the same side of the second fulcrum 220, such that the movement direction of the force transmission part 420 and the transmission end 210 are the same, thereby making the movement directions of the actuating end 410 and the transmission end 210 opposite.

[0058] The blade retraction and release mechanism of this embodiment uses a structure to achieve that the rotation direction of the lever 400 is opposite to the rotation direction of the swing frame 200.

[0059] Example 6: Based on Embodiment 4, the difference from Embodiment 5 is as follows: Figure 9 As shown, in this embodiment, the force transmission part 420 and the actuating end 410 are located on the same side of the first fulcrum 430, and the force transmission part 420 and the transmission end 210 are located on opposite sides of the second fulcrum 220.

[0060] The force transmission part 420 and the actuating end 410 of the lever 400 are located on the same side of the first fulcrum 430, so that the force transmission part 420 and the actuating end 410 move in the same direction; the force transmission part 420 and the transmission end 210 of the swing frame 200 are located on opposite sides of the second fulcrum 220, so that the force transmission part 420 and the transmission end 210 move in opposite directions, thereby making the actuating end 410 and the transmission end 210 move in opposite directions.

[0061] In this embodiment, the knife retraction and release mechanism uses a different structure to achieve a rotation direction of the lever 400 opposite to that of the swing frame 200.

[0062] Example 7: Based on Examples 4 to 6, such as Figure 2 , Figures 4 to 8 As shown, in this embodiment, the swing frame 200 is provided with a rotating connection hole 230, and the lever 400 is provided with a rotating shaft 440, so that the lever 400 is rotatably connected to the swing frame 200. The rotating connection hole 230 is constructed as an oblong hole.

[0063] In some other embodiments, the lever 400 may be provided with a rotating connection hole 230, and the swing frame 200 may be provided with a rotating shaft 440.

[0064] Since both the lever 400 and the swing frame 200 are rotatably connected to the housing 100, the lever 400 and the swing frame 200 move along different trajectories. The rotatable connection hole 230 of the two is constructed as an oblong hole. On the one hand, the oblong hole can absorb the changes in the connection position of the two caused by the different rotation trajectories of the two, ensuring that the two maintain a rotatable connection state during rotation. On the other hand, the two ends of the oblong hole can limit the rotatable angle of the two, thereby limiting the stroke of the retracting and releasing mechanism.

[0065] It is understood that in some other embodiments, the rotating connection structure between the lever 400 and the housing 100 may include an oblong hole structure, or the rotating connection structure between the swing frame 200 and the housing 100 may include an oblong hole structure.

[0066] Example 8: Based on Embodiments 1 and 2, the difference from Embodiments 3 to 8 is that in this embodiment, the lever 400 is fixedly connected to the housing 100, and the drive component 600 is connected to the swing frame 200.

[0067] In this embodiment, the drive member 600 is connected to the swing frame 200 via an elastic connection assembly. The elastic connection assembly includes a tension spring that drives the swing frame 200 to move from a first position to a second position and a compression spring that pushes the swing frame 200 to move from the second position to the first position.

[0068] In other embodiments, the resilient connection component may also employ other resilient structures or components.

[0069] In some other embodiments, the drive element 600 may also be inelastically connected to the swing frame 200, for example, by a rotatable connection.

[0070] With the lever 400 fixedly connected to the housing 100, the drive unit 600 only needs to drive the swing frame 200 to rotate, which simplifies the structure of the knife retraction and placement mechanism and helps to reduce product costs.

[0071] Example 9: Based on Example 4, such as Figure 2 , Figure 3 , Figure 10As shown, in this embodiment, the lever 400 includes a first driving part 450, the swing frame 200 includes a second driving part 240, and the driving member 600 is respectively connected to the first driving part 450 and the second driving part 240 to drive the lever 400 and the swing frame 200 to rotate. The rotation connection point between the lever 400 and the housing 100 forms a first fulcrum 430. The actuating end 410, the first fulcrum 430 and the first driving part 450 form a first lever. The rotation connection point between the swing frame 200 and the housing 100 forms a second fulcrum 220. The transmission end 210, the second fulcrum 220 and the second driving part 240 form a second lever. The first lever is constructed as a third type of lever, and the second lever is constructed as a first type of lever.

[0072] The first type of lever refers to a lever whose resistance point and effort point are located on opposite sides of the fulcrum. The third type of lever refers to a lever whose resistance point and effort point are located on the same side of the fulcrum, and whose effort arm is shorter than its resistance arm, thus forming a lever that requires more effort.

[0073] In this way, the movement of the drive member 600 causes the lever 400 and the swing frame 200 to rotate in different directions, so that the knife release and take-off mechanism of this embodiment can achieve the rotation direction of the lever 400 opposite to the rotation direction of the swing frame 200 through another structure.

[0074] In some other embodiments, the first lever may be constructed as a first type of lever, and the second lever may be constructed as a third type of lever.

[0075] Example 10: Based on all the aforementioned embodiments, such as Figure 11 As shown, in this embodiment, the blade holder 300 has a rotation axis 440 line A1 that rotates around the swing frame 200, the straight-line distance between the connection point of the elastic element 500 and the blade holder 300 and the rotation axis 440 line A1 is L1, the straight-line distance between the blade tip of the blade 700 and the rotation axis 440 line A1 is L2, and L2 / L1≥0.15.

[0076] The tip of the blade 700 is used to contact the rubber tree 10 and cut the bark of the rubber tree 10. Therefore, the tip of the blade 700, which is mounted on the blade holder 300, is set towards the rubber tree 10.

[0077] When the elastic element 500 resets, the straight-line distance L1 between the connection point of the elastic element 500 and the blade holder 300 and the rotation axis 440 line A1 constitutes the length of the force arm, and the straight-line distance between the blade tip of the blade 700 and the rotation axis 440 line A1 constitutes the length of the resistance arm. By setting the ratio between the straight-line distance between the connection point of the elastic element 500 and the blade holder 300 and the rotation axis 440 line A1 and the straight-line distance between the blade tip of the blade 700 and the rotation axis 440 line A1 to be greater than or equal to 0.5, on the one hand, it can avoid the blade tip of the blade 700 moving too slowly due to the resistance arm being too short, and ensure that the blade retraction and release mechanism can provide sufficient speed for the blade 700 during the blade retraction and release process, thereby ensuring that the blade 700 has sufficient ability to clean tree debris and glue lines. On the other hand, the lever 400 and the blade holder 300 do not need to increase the cooperation distance between them in order to increase the reset speed of the blade holder 300, which helps to reduce costs.

[0078] Example 11: like Figure 1 As shown, this utility model also proposes a rubber tapping machine, including the blade retraction and release mechanism 50 of any of the aforementioned embodiments.

[0079] The rubber tapping machine also includes a guide rail 20, a traveling support 30, and a drive unit 40. The guide rail 20 can deform to match the shape of the rubber tree 10 and hold it tightly to the rubber tree 10. The guide rail 20 usually includes an upper guide rail and a lower guide rail. The upper and lower guide rails achieve a stable and reliable fixed connection between the rubber tapping machine and the rubber tree 10. The traveling support 30 is connected between the upper and lower guide rails. The blade retraction and release mechanism 50 is installed on the traveling support 30. The drive unit 40 is used to drive the blade retraction and release mechanism 50 to retract and release the blade, and to drive the blade retraction and release mechanism 50 to cut the bark of the rubber tree 10 along an oblique direction on the traveling support 30.

[0080] For details on the structure of other components in the rubber tapping machine, please refer to the other patent applications of the applicant of this utility model.

[0081] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A blade retraction and release mechanism for a rubber tapping machine, characterized in that, include: case; Blade holder; A swing frame rotatably connected to the housing, the swing frame including a transmission end rotatably connected to the blade holder; A driving component that provides the driving force for the rotation of the swing frame; An elastic element that elastically connects the blade holder and the swing frame; The blade is mounted on the blade holder; as well as, The lever, which is mounted on the housing, The rotation of the swing frame drives the blade holder to move, switching between the blade placement position and the blade retraction position. The lever includes a toggle end protruding from the housing. The toggle end interferes with part of the movement path of the blade holder. The toggle end can push against the blade holder, so that the blade holder overcomes the force of the elastic element and rotates relative to the swing frame to avoid the toggle end. After the blade holder passes the toggle end, the elastic element drives the blade holder to rotate and reset relative to the swing frame.

2. The tool retraction and placement mechanism as described in claim 1, characterized in that, The lever is rotatably connected to the housing, and the driving member provides the driving force for the rotation of the lever. The rotation direction of the lever is opposite to the rotation direction of the swing frame.

3. The tool retraction and placement mechanism as described in claim 2, characterized in that, The lever is rotatably connected to the swing frame, and the drive component is drively connected to either the lever or the swing frame to provide rotational driving force to the lever and the swing frame.

4. The tool retraction and placement mechanism as described in claim 3, characterized in that, The rotational connection point between the lever and the swing frame constitutes a force transmission part; the rotational connection point between the lever and the housing constitutes a first fulcrum; and the rotational connection point between the swing frame and the housing constitutes a second fulcrum. The force-transmitting part and the actuating end are located on opposite sides of the first fulcrum, and the force-transmitting part and the transmission end are located on the same side of the second fulcrum; or... The force transmission part and the actuating end are located on the same side of the first fulcrum, and the force transmission part and the transmission end are located on opposite sides of the second fulcrum.

5. The tool retraction and placement mechanism as described in claim 3, characterized in that, One of the lever and the swing frame is provided with a rotatable connection hole, and the other is provided with a rotating shaft that rotatably engages with the rotatable connection hole, so that the lever and the swing frame are rotatably connected. The rotatable connection hole is constructed as an oblong hole.

6. The tool retraction and placement mechanism as described in claim 2, characterized in that, The lever includes a first driving part, and the swing frame includes a second driving part. The driving component is respectively connected to the first driving part and the second driving part to drive the lever and the swing frame to rotate. The rotatable connection point between the lever and the housing forms a first fulcrum, and the actuating end, the first fulcrum, and the first driving part form a first lever. The rotatable connection point between the swing frame and the housing forms a second fulcrum, and the transmission end, the second fulcrum, and the second drive unit form a second lever. One of the first lever and the second lever is constructed as a first-type lever, and the other is constructed as a third-type lever.

7. The tool retraction and placement mechanism as described in claim 1, characterized in that, The lever is fixedly connected to the housing, and the drive component is driven by the swing frame.

8. The tool retraction and placement mechanism as described in claim 1, characterized in that, The blade holder is provided with a rib for cooperating with the actuating end, and the rib extends protruding towards the rotational connection point between the swing frame and the housing.

9. The tool retraction and placement mechanism as described in claim 1, characterized in that, The blade holder has a rotation axis A1 that rotates around the swing frame. The straight-line distance between the connection point of the elastic element and the blade holder and the rotation axis A1 is L1. The straight-line distance between the end of the blade near the rubber tree and the rotation axis A1 is L2. L2 / L1≥0.

15.

10. A rubber tapping machine, characterized in that, Includes the knife retraction and release mechanism as described in any one of claims 1 to 9.

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