Platform and method for testing cutting performance of natural rubber tapping knife

Abstract

The invention discloses a platform and method for testing the cutting performance of a natural rubber tapping knife, and relates to the technical field of tapping experiments of tapping knives, and the platform comprises a box body, a rotary cutter fixing and rotating structure, a push type tapping knife fixing mechanism, a wood block fixing mechanism, a ball screw transmission mechanism, a synchronous belt transmission mechanism and a control driving mechanism. The rotary cutter fixing and rotating structure and the push type rubber tapping cutter fixing mechanism are arranged on one side of the box body, the wood block fixing mechanism and the ball screw transmission mechanism are arranged on the other side of the box body, the synchronous belt transmission mechanism drives the ball screw transmission mechanism to drive the wood block fixing mechanism to reciprocate, and the synchronous belt transmission mechanism is in signal connection with the control driving mechanism. The device is reasonable in design, realizes a simulated rubber tapping test of the rubber tapping knife of the rubber tree, replaces a rubber forest field rubber tapping test, and improves the cutting performance test efficiency and accuracy of the rubber tapping knife.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber tapping experiments with a rubber tapping knife, and more specifically to the technical field of a testing platform and method for the cutting performance of a natural rubber tapping knife. Background Art

[0002] Natural rubber is a natural high molecular compound mainly composed of polyisoprene. A rubber tapping knife is used to cut the rubber tree bark, piercing the latex vessels in the bark to obtain natural latex. In 1904, China began to introduce Hevea brasiliensis from Brazil and widely promoted it. The rubber tree planting areas are mainly concentrated in Hainan and Yunnan provinces. Due to the relatively good insulation, resilience, and plasticity of natural rubber, and after processing, it has characteristics such as heat resistance, acid resistance, alkali resistance, and wear resistance, and is extremely widely used. The quality of the rubber tapping knife directly affects the rubber tapping quality and latex yield.

[0003] Currently, the current mainstream rubber tapping knife in China is a traditional push - type rubber tapping knife (the rubber tapping knife reciprocates with the rubber wood). Although the rotary cutting - type rubber tapping knife has not been widely used at present, many institutions have carried out research and promotion work, and the electric rotary cutting - type rubber tapping knife has good application scenarios in the future. The current main rubber tapping experiments are carried out by going to the rubber plantation for actual rubber tapping labor, and then using the bark consumption, rubber tapping speed, rubber tapping depth, and rubber tapping time as evaluation indicators. However, in the actual rubber tapping experiments in the rubber plantation, due to the differences between each rubber tree, the experimental data will be inaccurate; and in the rubber tapping experiment, the evaluation indicators are crucial for evaluating the performance of the rubber tapping knife and optimizing the rubber tapping process. Summary of the Invention

[0004] The purpose of the present invention is to provide a testing platform and method for the cutting performance of a natural rubber tapping knife in order to solve the above - mentioned technical problems.

[0005] The present invention specifically adopts the following technical solutions to achieve the above purpose:

[0006] One aspect of the present invention provides a testing platform for the cutting performance of a natural rubber tapping knife, including a box body, a rotary cutting knife fixing and rotating structure, a push - type rubber tapping knife fixing mechanism, a wooden block fixing mechanism, a ball screw transmission mechanism, a synchronous belt transmission mechanism, and a control driving mechanism;

[0007] The rotary cutting knife fixing and rotating structure and the push - type rubber tapping knife fixing mechanism are arranged on one side of the box body, the wooden block fixing mechanism and the ball screw transmission mechanism are arranged on the other side of the box body, the synchronous belt transmission mechanism drives the ball screw transmission mechanism to drive the wooden block fixing mechanism to reciprocate, and the synchronous belt transmission mechanism is signal - connected to the control driving mechanism.

[0008] Specifically, through the principle of relative motion, the rubber tapping knife is stationary, the rotary cutting knife fixing and rotating structure and the push-type rubber tapping knife fixing mechanism are stationary, and the rubber wood block moves towards the rotary cutting knife fixing and rotating structure and the push-type rubber tapping knife fixing mechanism, thereby achieving the process of cutting the rubber wood block. This solution is applicable to the comparative analysis of different cutting experiments of traditional push-type rubber tapping knives and rotary cutting knives, reducing the workload of rubber tapping knife experiments in rubber plantations in the field, avoiding the influence of complex situations such as the rubber plantation environment and the growth of rubber trees on the rubber tapping knife experiments, and improving the accuracy of the performance analysis of rubber tapping knives.

[0009] In one embodiment, the rotary cutting knife fixing and rotating structure includes a first fixing nut, a clamping block, and a rotating main shaft. A rotary rubber tapping knife is placed between the clamping block and the rotating main shaft. The rotary rubber tapping knife is locked by tightening the uppermost first fixing nut, so that the rotary rubber tapping knife rotates synchronously with the rotating main shaft. The lower part of the rotating main shaft extends into the box body through a bearing and is connected to the control driving mechanism.

[0010] In one embodiment, the push-type rubber tapping knife fixing mechanism includes a push knife limit nut, a push knife fixing frame, a push knife limit plate, a blade base, a support shaft, and a fastener;

[0011] The support shaft is fixed on the upper surface of the box body by a fastener. The fixing frame is fixed on the top of the support shaft by a tightening method. The fixing frame is a U-shaped part with an opening in the horizontal direction. The blade base is fixed on the bottom side of the U-shaped part. The push knife limit nut rotates through the top side of the U-shaped part by thread. The push knife limit plate is fixedly connected to the bottom of the push knife limit nut. The gap between the push knife limit plate and the blade base is a clamping space for clamping the push-type rubber tapping knife. The push-type rubber tapping knife is clamped and fixed by rotating the push knife limit nut to drive the push knife limit plate to move up and down.

[0012] In one embodiment, the wood block fixing mechanism includes a wood block limit nut, a wood block fixing frame, a wood block limit plate, a second fixing nut, and a wood block base;

[0013] The wood block fixing frame is a "C"-shaped part with an opening facing the rotary cutting knife fixing and rotating structure and the push-type rubber tapping knife fixing mechanism. The second fixing nut is fixed on the back side of the "C"-shaped part. The wood block base is directly fixedly connected to the upper part inside the wood block fixing frame. The wood block limit nut rotates through the top of the "C"-shaped part by thread. The wood block limit plate is located inside the "C"-shaped part. The bottom of the wood block limit nut is fixedly connected to the wood block limit plate. The gap between the wood block limit plate and the wood block base is a rubber clamping cavity for clamping the rubber wood block. The second fixing nut is connected to the ball screw drive mechanism.

[0014] In one embodiment, the ball screw drive mechanism includes a travel limiter, a connection and fixing device, a tension and compression sensor, a drive support device, an auxiliary drive device, a ball screw, a travel guide rail, a support unit, and a reverse device;

[0015] The travel guide rail is installed and fixed on the operation plane at the top of the box body. The travel limiter is installed at both ends of the travel guide rail to prevent the lead screw from exceeding the travel. The drive support device is installed on the travel guide rail. The connection and fixing device and the tension and compression sensor are installed on the upper side of the drive support device. The connection and fixing device is used to connect the wooden block fixing mechanism. The auxiliary drive device is installed at the bottom of the drive support device and is used to connect the ball screw and the auxiliary drive. The reverse device is installed at the bottom of the drive support device to guide the ball to circulate and roll. The support unit is installed on both sides of the ball screw and is used to support the drive of the ball screw and the pulley shaft in the synchronous belt drive mechanism.

[0016] In one embodiment, the synchronous belt drive mechanism includes a driven pulley assembly at the upper end, a driving pulley assembly at the lower end, and a synchronous belt sleeved between the driven pulley assembly and the driving pulley assembly. The driven pulley assembly is connected to one end of the ball screw. The driven pulley assembly and the driving pulley assembly evenly include a pulley shaft and a pulley sleeved on the pulley shaft.

[0017] In one embodiment, the control drive mechanism includes a synchronous drive mechanism and a rotary drive mechanism.

[0018] In one embodiment, the synchronous drive mechanism includes a synchronous belt drive motor and a synchronous motor support frame for installing the synchronous belt drive motor. The synchronous motor support frame and the rotary motor support frame are respectively fixed on the inner top of the box body.

[0019] In one embodiment, the rotary drive mechanism includes a rotary motor support frame fixed inside the box body, a rotary drive motor installed on the rotary motor support frame, a speed reducer provided at the output end of the rotary drive motor, and a rotary shaft provided at the output end of the speed reducer. The rotary shaft is connected to the lower end of the rotary main shaft through a coupling. The rotary drive motor is signal-connected to the control drive mechanism.

[0020] Specifically, the rotary drive motor is fixed on the rotary motor support frame, and the rotary shaft on the rotary drive motor is speed-regulated through the speed reducer.

[0021] In one embodiment, the control drive mechanism includes a controller installed at the bottom of the lower side of the box body. The controller is signal-connected to the synchronous belt drive motor and the rotary drive motor.

[0022] Specifically, the controller is used for controlling the rotational speeds of the rotary drive motor and the synchronous belt drive motor. Further, the synchronous belt drive motor controls the moving speed and the travel distance of the wooden block fixing mechanism through the ball screw.

[0023] Another aspect of the present invention provides a method for testing the cutting performance of a natural rubber tapping knife, comprising the following steps:

[0024] S1. Loosen the push knife limit nut to move the push knife limit plate upward, then place the push - type tapping blade in the groove of the blade base, and reverse - tighten the push knife limit nut to move the push knife limit plate downward, thereby completing the clamping and fixing of the push - type tapping blade; or loosen the fixing nut, remove it, take out the clamping block, place the rotary cutting blade above the positioning hole of the rotary main shaft, and then restore the clamping block in sequence and tighten the fixing nut to complete the clamping and fixing of the rotary cutting blade; only one of the two types of tapping blades can be used for cutting performance testing each time;

[0025] S2. Determine the part to be cut according to the size and positional relationship of the tapping knife, and then determine the size of the entire rubber wood block. Then loosen the wood block limit nut to move the wood block limit plate upward, place the wood block on the wood block base, and tighten the wood block limit nut to move the wood block limit plate downward, thereby completing the clamping and fixing of the wood block and fixing the cutting depth at the same time;

[0026] S3. Plug in the power supply of the device, open the software connected to the device controller, adjust parameters such as rotational speed, moving speed and stroke of the rubber wood block in the software, click to start the test, then start the synchronous belt drive motor, which will drive the synchronous belt transmission mechanism to work, and finally drive the ball screw transmission mechanism to work;

[0027] S4. During the test, the pull - pressure sensor detects data in real - time and transmits the data to the interface in the computer software. After the test, the obtained experimental data can be processed and analyzed to establish the relationship between the cutting force of the tapping knife and the tapping speed, tapping length and tapping depth; reverse - operate according to steps S1 and S2 to remove the tapping blade and the cut rubber wood block to further evaluate the wear condition and cutting surface quality, and complete the test of the cutting performance of the natural rubber tapping knife.

[0028] The beneficial effects of the present invention are as follows:

[0029] 1. The present invention designs a test platform for the cutting performance of natural rubber tapping knives, which can be used to simulate tapping tests, can adjust parameters such as tapping speed and tapping depth, complete the precise quantitative analysis of the cutting performance of tapping knives, reduce the inaccuracy and operation intensity of on - site tapping tests, and open up new test devices and methods for scientific research personnel or rubber enterprises to conduct experiments and new product research and development on tapping knives. Therefore, the present invention has important scientific research significance, social significance and economic significance.

[0030] 2. By placing the designed push - type rubber tapping knife or rotary cutting rubber tapping knife on the corresponding clamping and fixing device, starting the motor to drive the ball screw mechanism for transmission, and completing parameter setting on the computer software, the experiment of the rubber tapping knife cutting the wooden block can be realized, replacing the traditional rubber tapping experiment in the rubber plantation, and improving the test efficiency and accuracy.

[0031] 3. The design of the present invention is reasonable, realizing the simulated rubber tapping experiment of the rubber tapping knife of the rubber tree, replacing the rubber tapping experiment in the rubber plantation, and improving the test efficiency and accuracy of the cutting performance of the rubber tapping knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0033] Figure 1 It is a schematic structural diagram of a test platform for testing the cutting performance of a natural rubber tapping knife of the present invention.

[0034] Figure 2 It is a schematic structural diagram of a push - type rubber tapping knife fixing mechanism.

[0035] Figure 3 It is a schematic structural diagram of a rotary cutting knife fixing and rotating mechanism.

[0036] Figure 4 It is a schematic structural diagram of a wooden block fixing mechanism.

[0037] Figure 5 It is a schematic structural diagram of a ball screw drive mechanism.

[0038] Figure 6 It is a schematic structural diagram of a synchronous belt drive mechanism.

[0039] Figure 7 It is a schematic structural diagram of a control drive mechanism.

[0040] Figure 8 It is Figure 5 a partial structural schematic diagram of the transmission support device in

[0041] Reference numerals: 1. Box body; 2. Rotary cutting knife fixing and rotating structure; 3. Push - type rubber tapping knife fixing mechanism; 4. Wooden block fixing mechanism; 5. Ball screw drive mechanism; 6. Synchronous belt drive mechanism; 7. Control drive mechanism;

[0042] 21. First fixing nut; 22. Clamping block; 23. Rotating main shaft;

[0043] 31. Push knife limit nut; 32. Push knife fixed frame; 33. Push knife limit plate; 34. Blade base; 35. Support shaft; 36. Fastener;

[0044] 41. Wood block limit nut; 42. Wood block fixed frame; 43. Wood block limit plate; 44. Second fixed nut; 45. Wood block base;

[0045] 51. Stroke limiter; 52. Connection and fixing device; 53. Tensile and compressive force sensor; 54. Transmission support device; 55. Auxiliary transmission device; 56. Ball screw; 57. Stroke guide rail; 58. Support unit; 59. Reverse device;

[0046] 61. Synchronous belt; 62. Belt pulley; 63. Belt pulley shaft;

[0047] 71. Synchronous motor support frame; 72. Synchronous belt drive motor; 73. Controller; 74. Rotary drive motor; 75. Rotary motor support frame; 76. Reducer; 77. Rotary shaft. Detailed implementation mode

[0048] To make the technical problems, technical solutions and technical effects of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0050] It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0051] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "inside", "outside", "above", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0052] Embodiment 1

[0053] As Figures 1-8 shown, this embodiment provides a test platform for the cutting performance of a natural rubber tapping knife, which includes a box body 1, a rotary cutting knife fixing and rotating structure 2, a push-type tapping knife fixing mechanism 3, a wooden block fixing mechanism 4, a ball screw drive mechanism 5, a synchronous belt drive mechanism 6, and a control drive mechanism 7;

[0054] The rotary cutting knife fixing and rotating structure 2 and the push-type tapping knife fixing mechanism 3 are arranged on one side of the box body 1, the wooden block fixing mechanism 4 and the ball screw drive mechanism 5 are arranged on the other side of the box body 1, the synchronous belt drive mechanism 6 drives the ball screw drive mechanism 5 to drive the wooden block fixing mechanism 4 to move reciprocally, and the synchronous belt drive mechanism 6 is signal-connected to the control drive mechanism 7.

[0055] Specifically, based on the principle of relative motion, the tapping knife is stationary, the rotary cutting knife fixing and rotating structure 2 and the push-type tapping knife fixing mechanism 3 are stationary, and the rubber wooden block moves towards the rotary cutting knife fixing and rotating structure 2 and the push-type tapping knife fixing mechanism 3, so as to achieve the process of cutting the rubber wooden block. This solution is applicable to the comparative analysis of different cutting experiments of traditional push-type tapping knives and rotary tapping knives, reduces the workload of the tapping knife cutting experiment in the rubber forest field, avoids the influence of complex situations such as the rubber forest environment and the growth of rubber trees on the tapping knife cutting experiment, and improves the accuracy of the tapping knife performance analysis.

[0056] Embodiment 2

[0057] This embodiment further optimizes on the basis of Embodiment 1. Specifically:

[0058] The rotary cutting knife fixing and rotating structure 2 includes a first fixing nut 21, a clamping block 22, and a rotating main shaft 23. A rotary tapping knife is placed between the clamping block 22 and the rotating main shaft 23. The rotary tapping knife is locked by tightening the uppermost first fixing nut 21, so that the rotary tapping knife rotates synchronously with the rotating main shaft 23. The lower part of the rotating main shaft 23 extends into the box body 1 through a bearing and is connected to the control drive mechanism 7.

[0059] The push-type tapping knife fixing mechanism 3 includes a push knife limit nut 31, a push knife fixing frame 32, a push knife limit plate 33, a blade base 34, a support shaft 35, and a fastener 36;

[0060] The support shaft 35 is fixed on the upper surface of the box body 1 by a fastener 36. The fixed frame 32 is fixed on the top of the support shaft 35 by a tightening method. The fixed frame 32 is a U-shaped part with an opening in the horizontal direction. The blade base 34 is fixed on the bottom side of the U-shaped part. The push knife limit nut 31 is rotated through the top side of the U-shaped part by a thread. The push knife limit plate 33 is fixedly connected to the bottom of the push knife limit nut 31. The gap between the push knife limit plate 33 and the blade base 34 is a clamping space for clamping the push-type rubber tapping knife. By rotating the push knife limit nut 31 to drive the push knife limit plate 33 to move up and down, the clamping and fixing of the push-type rubber tapping knife are realized.

[0061] Embodiment 3

[0062] This embodiment is further optimized on the basis of Embodiment 2. Specifically:

[0063] The wooden block fixing mechanism 4 includes a wooden block limit nut 41, a wooden block fixing frame 42, a wooden block limit plate 43, a second fixing nut 44 and a wooden block base 45;

[0064] The wooden block fixing frame 42 is a "C"-shaped part with an opening facing the side of the rotary cutting knife fixing and rotating structure 2 and the push-type rubber tapping knife fixing mechanism 3. The second fixing nut 44 is fixed on the back side of the "C"-shaped part. The wooden block base 45 is directly fixedly connected to the upper part inside the wooden block fixing frame 42. The wooden block limit nut 41 is rotated through the top of the "C"-shaped part by a thread. The wooden block limit plate 43 is located inside the "C"-shaped part. The bottom of the wooden block limit nut 41 is fixedly connected to the wooden block limit plate 43. The gap between the wooden block limit plate 43 and the wooden block base 45 is a rubber clamping cavity for clamping the rubber wooden block. The second fixing nut 44 is connected to the ball screw drive mechanism 5.

[0065] The ball screw drive mechanism 5 includes a stroke limiter 51, a connection fixing device 52, a tension and compression sensor 53, a drive support device 54, an auxiliary drive device 55, a ball screw 56, a stroke guide rail 57, a support unit 58 and a reverse device 59;

[0066] The stroke guide rail 57 is installed and fixed on the operation plane at the top of the box body 1. The stroke limiter 51 is installed at both ends of the stroke guide rail 57 to prevent the lead screw from exceeding the stroke. The drive support device 54 is installed on the stroke guide rail 57. The connection fixing device 52 and the tension and compression sensor 53 are installed on the upper side of the drive support device 54. The connection fixing device 52 is used to connect the wooden block fixing mechanism 4. The auxiliary drive device 55 is installed at the bottom of the drive support device 54 and is used to connect the ball screw 56 and the auxiliary drive. The reverse device 59 is installed at the bottom of the drive support device 54 to guide the ball to circulate and roll. The support unit 58 is installed on both sides of the ball screw 56 and is used to support the transmission of the ball screw 56 and the pulley shaft 63 in the synchronous belt drive mechanism 6.

[0067] Example 4

[0068] This embodiment is a further optimization based on Embodiment 2, specifically:

[0069] The synchronous belt drive mechanism 6 includes a driven pulley assembly at the upper end, a driving pulley assembly at the lower end, and a synchronous belt 61 sleeved between the driven pulley assembly and the driving pulley assembly. The driven pulley assembly is connected to one end of the ball screw 56. Both the driven pulley assembly and the driving pulley assembly uniformly include a pulley shaft 63 and a pulley 62 sleeved on the pulley shaft 63.

[0070] Example 5

[0071] This embodiment is a further optimization based on Embodiment 2, specifically:

[0072] The control drive mechanism 7 includes a synchronous drive mechanism and a rotational drive mechanism.

[0073] The synchronous drive mechanism includes a synchronous belt drive motor 72 and a synchronous motor support frame 71 for mounting the synchronous belt drive motor 72. The synchronous motor support frame 72 and the rotational motor support frame 71 are respectively fixed to the inner top of the box body 1.

[0074] The rotational drive mechanism includes a rotational motor support frame 75 fixed inside the box body, a rotational drive motor 74 mounted on the rotational motor support frame 75, a speed reducer 76 provided at the output end of the rotational drive motor 74, and a rotating shaft 77 provided at the output end of the speed reducer 76. The rotating shaft 77 is connected to the lower end of the rotating main shaft 23 through a coupling. The rotational drive motor 74 is signal-connected to the control drive mechanism 7.

[0075] Specifically, the rotational drive motor 74 is fixed on the rotational motor support frame 75, and the rotating shaft 77 on the rotational drive motor 74 is speed-regulated through the speed reducer 76.

[0076] The control drive mechanism 7 includes a controller 73 mounted on the lower bottom side of the box body 1. The controller 73 is signal-connected to the synchronous belt drive motor 72 and the rotational drive motor 74.

[0077] Specifically, the controller 73 is used for controlling the rotational speeds of the rotational drive motor 74 and the synchronous belt drive motor 72. Further, the synchronous belt drive motor 72 controls the moving speed and the stroke distance of the wood block fixing mechanism 4 through the ball screw 56.

[0078] Example 6

[0079] This embodiment provides a method for testing the cutting performance of a natural rubber tapping knife, including the following steps:

[0080] S1. Loosen the push - knife limit nut 31 to move the push - knife limit plate 33 upward, then place the push - type rubber tapping blade in the groove of the blade base 34, and reverse - tighten the push - knife limit nut 31 to move the push - knife limit plate 33 downward, thus completing the clamping and fixing of the push - type rubber tapping blade; or loosen the first fixing nut 21, remove it, take out the clamping block 22, place the rotary rubber tapping blade at the positioning hole above the rotary main shaft 23, first restore the clamping block 22 in sequence, and then tighten the first fixing nut 21, thus completing the clamping and fixing of the rotary rubber tapping blade; only one of the two methods can be used for the cutting performance test each time the rubber tapping blades are tested.

[0081] S2. Determine the part to be cut according to the size and position relationship of the rubber tapping knife, and then determine the size of the entire rubber wood block. Then loosen the wood - block limit nut 41 to move the wood - block limit plate 43 upward, place the wood block on the wood - block base 45, and tighten the wood - block limit nut 41 to move the wood - block limit plate 43 downward, thus completing the clamping and fixing of the wood block and fixing the cutting depth at the same time.

[0082] S3. Plug in the power supply of the device, open the software connected to the device controller, adjust parameters such as rotational speed, moving speed and stroke of the rubber wood block in the software, click start test, then start the synchronous - belt drive motor 72, which will drive the synchronous - belt transmission mechanism 6 to work, and finally drive the ball - screw transmission mechanism 5 to work.

[0083] S4. During the test, the pull - pressure sensor 53 detects data in real - time and transmits the data to the interface in the computer software. After the test is completed, the obtained experimental data can be processed and analyzed to establish the relationship between the cutting force of the rubber tapping knife and the tapping speed, tapping length and tapping depth; reverse - operate according to steps S1 and S2 to remove the rubber tapping blade and the cut rubber wood block to further evaluate the wear condition and cutting surface quality, and complete the test of the cutting performance of the natural - rubber rubber tapping knife.

Claims

1. A natural rubber tapping knife cutting performance test platform, characterized in that: It comprises a box body (1), a rotary cutter fixing and rotating structure (2), a push-type rubber cutting knife fixing mechanism (3), a wood block fixing mechanism (4), a ball screw transmission mechanism (5), a synchronous belt transmission mechanism (6) and a control drive mechanism (7); The rotary cutter fixing and rotating structure (2) and the push-type rubber cutting knife fixing mechanism (3) are arranged on one side of the box body (1), the wood block fixing mechanism (4) and the ball screw transmission mechanism (5) are arranged on the other side of the box body (1), the synchronous belt transmission mechanism (6) drives the ball screw transmission mechanism (5) to drive the wood block fixing mechanism (4) to reciprocate, and the synchronous belt transmission mechanism (6) is connected to the control drive mechanism (7) by signal.

2. According to claim 1, a natural rubber tapping knife cutting performance testing platform, characterized in that: The rotary cutter fixing and rotating structure (2) comprises a first fixing nut (21), a clamping block (22) and a rotating spindle (23); a rotary rubber cutting knife is placed between the clamping block (22) and the rotating spindle (23); the rotary rubber cutting knife is locked by tightening the first fixing nut (21) at the top, so that the rotary rubber cutting knife and the rotating spindle (23) perform synchronous rotation; the lower part of the rotating spindle (23) extends into the box body (1) through a pulley shaft and is connected to the control drive mechanism (7).

3. A natural rubber tapping knife cutting performance testing platform according to claim 2, characterized in that: The push-type rubber tapping knife fixing mechanism (3) comprises a push-knife limiting nut (31), a push-knife fixing frame (32), a push-knife limiting plate (33), a blade base (34), a supporting shaft (35) and a fastener (36); The support shaft (35) is screwed and fixed on the box body (1) by a fastener (36); the fixed frame (32) is fixed on the top of the support shaft (35) by screwing; the fixed frame (32) is a U-shaped member opened in the horizontal direction; the blade base (34) is fixed on the bottom side of the U-shaped member; the push knife limiting nut (31) is screwed through the top side of the U-shaped member; the push knife limiting plate (33) is fixedly connected to the bottom of the push knife limiting nut (31); and the gap between the push knife limiting plate (33) and the blade base (34) is a clamping space for clamping a push-type rubber tapping knife.

4. A natural rubber tapping knife cutting performance testing platform according to claim 3, characterized in that: The wood block fixing mechanism (4) comprises a wood block limiting nut (41), a wood block fixing frame (42), a wood block limiting plate (43), a second fixing nut (44) and a wood block base (45); The wooden block fixing frame (42) is a "C"-shaped part with an opening facing one side of the veneer cutting tool fixing and rotating structure (2) and the push-type rubber tapping knife fixing mechanism (3). The second fixing nut (44) is fixed on the back side of the "C"-shaped part. The wooden block base (45) is directly fixedly connected to the upper part inside the wooden block fixing frame (42). The wooden block limit nut (41) is rotationally threaded through the top of the "C"-shaped part. The wooden block limit plate (43) is located inside the "C"-shaped part. The bottom of the wooden block limit nut (41) is fixedly connected to the wooden block limit plate (43). The gap between the wooden block limit plate (43) and the wooden block base (45) is a rubber clamping cavity for clamping the rubber wooden block. The second fixing nut (44) is connected to the ball screw drive mechanism (5).

5. A natural rubber tapping knife cutting performance testing platform according to claim 4, characterized in that: The ball screw drive mechanism (5) includes a stroke limiter (51), a connection fixing device (52), a tensile and compressive force sensor (53), a drive support device (54), an auxiliary drive device (55), a ball screw (56), a stroke guide rail (57), a support unit (58), and a reverse device (59). The stroke guide rail (57) is installed and fixed on the operation plane at the top of the box body (1). The stroke limiter (51) is installed at both ends of the stroke guide rail (57) to prevent the screw from exceeding the stroke. The drive support device (54) is installed on the stroke guide rail (57). The connection fixing device (52) and the tensile and compressive force sensor (53) are installed on the upper side part of the drive support device (54). The connection fixing device (52) is used to connect the wooden block fixing mechanism (4). The auxiliary drive device (55) is installed at the bottom of the drive support device (54) for connecting the ball screw (56) and auxiliary drive. The reverse device (59) is installed at the bottom of the drive support device (54) to guide the ball to circulate and roll. The support unit (58) is installed on both sides of the ball screw (56) for supporting the drive of the ball screw (56) and the pulley shaft (63) in the synchronous belt drive mechanism (6).

6. A natural rubber tapping knife cutting performance testing platform according to claim 5, characterized in that: The synchronous belt drive mechanism (6) includes a driven pulley assembly at the upper end, a driving pulley assembly at the lower end, and a synchronous belt (61) sleeved between the driven pulley assembly and the driven pulley assembly. The driven pulley assembly is connected to one side end of the ball screw (56). Both the driven pulley assembly and the driven pulley assembly uniformly include a pulley shaft (63) and a pulley (62) sleeved on the pulley shaft (63).

7. A natural rubber tapping knife cutting performance testing platform according to claim 6, characterized in that: The control drive mechanism (7) includes a synchronous drive mechanism and a rotation drive mechanism.

8. A natural rubber tapping knife cutting performance testing platform according to claim 7, characterized in that: The synchronous drive mechanism includes a synchronous belt drive motor (72) and a synchronous motor support frame (71) for installing the synchronous belt drive motor (72). The synchronous motor support frame (72) and the rotation motor support frame (71) are respectively fixed on the inner top of the box body (1).

9. A natural rubber tapping knife cutting performance testing platform according to claim 8, characterized in that: The rotary drive mechanism comprises a rotary motor support frame (75) fixed inside the housing, a rotary drive motor (74) mounted on the rotary motor support frame (75), a reducer (76) arranged at the output end of the rotary drive motor (74), and a rotary shaft (77) arranged at the output end of the reducer (76), the rotary shaft (77) being connected to the lower end of the rotary main shaft (23) via a coupling, and the rotary drive motor (74) being signal-connected to the control drive mechanism (7); The control drive mechanism (7) comprises a controller (73) installed at the bottom of the lower side of the box body (1), and the controller (73) is signal-connected to the synchronous belt drive motor (72) and the rotation drive motor (74).

10. A method for testing the cutting performance of a natural rubber tapping knife, using a natural rubber tapping knife cutting performance testing platform as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Loosen the push blade limit nut (31) to move the push blade limit plate (33) upward, then place the push-type rubber tapping blade in the groove of the blade base (34), and tighten the push blade limit nut (31) in the opposite direction to move the push blade limit plate (33) downward, thereby completing the clamping and fixing of the push-type rubber tapping blade; or loosen the first fixing nut (21), remove it, take out the clamping block (22), place the rotary rubber tapping blade at the positioning hole above the rotating spindle (23), restore the clamping block (22) in sequence, and then tighten the first fixing nut (21), thereby completing the clamping and fixing of the rotary rubber tapping blade; when testing the two types of rubber tapping blades, only one method can be used to perform the cutting performance test each time; S2, determining the portion to be cut according to the size and position relationship of the rubber tapping knife, and then determining the size of the entire rubber wood block, then loosening the wood block limit nut (41) to move the wood block limit plate (43) upward, then placing the wood block on the wood block base (45), tightening the wood block limit nut (41) to move the wood block limit plate (43) downward, thereby completing the clamping and fixing of the wood block and fixing the cutting depth at the same time; S3, plug in the power supply of the device, open the software connected to the device controller, adjust the rotation speed, the moving speed of the rubber wood block and the stroke parameters in the software, click to start the test, and then start the synchronous belt drive motor (72), thereby driving the synchronous belt transmission mechanism (6) to work, and finally driving the ball screw transmission mechanism (5) to work; S4, during the test, the tension and pressure sensor (53) detects data in real time and transmits the data to the interface in the computer software. After the test, the obtained experimental data can be processed and analyzed to establish the relationship between the cutting force of the tapping knife and the tapping speed, tapping length and tapping depth; the tapping blade and the cut rubber wood block can be removed according to the reverse operation of step S1 and step S2 to further evaluate the wear condition and the cutting surface quality, thereby completing the test of the cutting performance of the natural rubber tapping knife.

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