U-shaped cutting system of handheld rotary cutting type electric glue collecting machine

Abstract

The utility model discloses a U-shaped cutting system of a handheld rotary-cut type electric glue collecting machine, which comprises a blade, a transmission component and a gearbox, and further comprises a gearbox, a depth control ring, a transverse baffle and a side baffle, the transmission component is arranged in the gearbox, the input end of the transmission component is connected with the output end of the gearbox, and the output end of the gearbox is connected with the depth control ring. The output end of the transmission assembly penetrates out of the gearbox and is connected with the depth control ring, the blade is arranged on the lower surface of the depth control ring, and the gearbox drives the depth control ring to rotate through the transmission assembly. The transverse baffle protrudes outwards in the diameter direction of the depth control ring, L-shaped notches are formed in the gearbox and the transverse baffle, the side end of the depth control ring is inserted into the L-shaped notches, the lower surface of the side baffle is located above the depth control ring, and first glue scraping gaps are formed between the lower surface of the side baffle and the depth control ring and between the inner walls of the L-shaped notches and the depth control ring. And redundant glue lines on the depth control ring and the blade can be removed through the first glue scraping gap, a worker does not need to interrupt glue collection work to clean the blade, and the glue collection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric rotary cutting rubber tapping machines, in particular to a U-shaped cutting system of a handheld electric rotary cutting rubber tapping machine. Background Art

[0002] A handheld electric rotary rubber tapper is a compact, portable gardening tool. Prior art handheld rubber tappers consist of a body, a transmission assembly, a motor, and a blade. The motor drives the blade through the transmission assembly, thereby tapping the rubber. However, during the actual rubber tapping process, rubber strands can easily become entangled in the blade and associated components, making them difficult to remove and affecting both rubber tapping efficiency and quality. Improvements are needed to address this issue. Summary of the Invention

[0003] The utility model aims to solve the defects of handheld rubber tappers in the prior art, such as rubber lines winding around blades during rubber tapping, thereby affecting rubber tapping efficiency and rubber quality, and provides a new U-shaped cutting system for handheld rotary-cut electric rubber tappers.

[0004] In order to solve the above technical problems, the present invention is implemented through the following technical solutions:

[0005] A U-shaped cutting system of a handheld rotary-cutting electric rubber tapper comprises a blade, a transmission assembly and a gearbox, and also comprises a gearbox, a depth control ring, a cross baffle and a side baffle. The transmission assembly is arranged in the gearbox, the input end of the transmission assembly is connected to the output end of the gearbox, the output end of the transmission assembly passes through the gearbox and is connected to the depth control ring, the blade is arranged on the lower surface of the depth control ring, and the gearbox drives the depth control ring to rotate through the transmission assembly; the cross baffle protrudes outward along the diameter direction of the depth control ring, and L-shaped notches are provided on the gearbox and the cross baffle, the side ends of the depth control ring are inserted into the L-shaped notches, and the lower surfaces of the side baffles are located above the depth control ring, and a first scraping rubber gap is formed between the lower surfaces of the side baffles and the inner walls of the L-shaped notches and the depth control ring.

[0006] During the rubber tapping process, the excess rubber lines on the depth control ring and the blade can be cleared through the first rubber scraping gap, so that the staff does not need to interrupt the rubber tapping work to clean the blade, which improves the efficiency and convenience of rubber tapping and facilitates use; the depth control ring and the blade are cleaned at multiple points through the cross baffle, side baffle and gear box, which improves the cleanliness of the blade and the depth control ring during use.

[0007] Preferably, in the above-mentioned U-shaped cutting system of a hand-held rotary cutting electric rubber tapping machine, the depth control ring includes a ring body and a connecting pipe, the connecting pipe is arranged at the center of the ring body and extends upward, and the output end of the transmission assembly is connected to the connecting pipe; the gear box is provided with an arc-shaped groove above the L-shaped notch, and the arc-shaped groove, the side wall of the cross baffle, and the side wall of the side baffle are all opposite to the outer side wall of the connecting pipe and form a second rubber scraping gap.

[0008] The outside of the connecting pipe can be cleaned through the second scraping gap, which further improves the cleanliness of the depth control ring and further improves the smoothness of rubber collection.

[0009] Preferably, in the U-shaped cutting system of the hand-held rotary cutting electric rubber tapping machine described above, positioning holes and threaded holes distributed from high to low are provided in the connecting pipe, and the inner diameter of the positioning hole is larger than the inner diameter of the threaded hole; the output end of the transmission assembly includes a positioning section and a threaded section, the threaded section is inserted into the threaded hole and threadedly connected, and the positioning section is inserted into the positioning hole and plugged into the positioning hole.

[0010] Through the plug-in fit between the positioning section and the positioning hole, and the threaded fit between the threaded section and the threaded hole, the coaxiality and firmness between the depth control ring and the output end of the transmission assembly are improved, preventing the depth control ring from falling off during rubber tapping.

[0011] Preferably, the above-mentioned U-shaped cutting system of a hand-held rotary cutting electric rubber tapper is provided with a first hole on the lower surface of the ring body, and the lower surface of the ring body is provided with convex strips located on both sides of the first hole, the ends of the convex strips extend in directions away from each other, and a limit block is provided on the inner side wall of the convex strip; an extension surface is provided on both sides of the blade, a second hole and a limit groove corresponding to the limit block are provided on the blade, the blade is inserted between the convex strips, the extension surface is pressed against the inner side wall of the convex strip, the limit block is inserted into the adjacent limit groove and the limit block is adapted to the shape of the limit groove, the first hole is opposite to the second hole; it also includes a first fastener, the first fastener passes through the second hole and is screwed into the first hole.

[0012] Through the mutual cooperation between the convex strip and the extended surface, on the one hand, the rotation of the blade is restricted, which improves the convenience of tightening the first fastener in the first hole; on the other hand, the stability of the blade fixed on the depth control ring is improved, which prevents the blade from shaking after long-term use; the pre-fixation of the blade is achieved through the plug-in cooperation between the limit block and the limit groove, which improves the accuracy of the alignment between the first hole and the second hole and further facilitates the installation of the blade.

[0013] Preferably, the U-shaped cutting system of the handheld rotary cutting electric rubber tapping machine described above further includes a second fastener, a third fastener, a front support member, a rear support member and a positioning arm, wherein the front support member is bent and the lower end of the front support member extends downward in the vertical direction, and the rear support member includes a vertical plate and an arc plate;

[0014] The gearbox includes an upper cover and a base, the upper cover is provided with a hollow fixing post, the base is provided with a fixing hole, the upper cover is closed on the base, the fixing post is inserted into the fixing hole and plugged in, and the second fastener is passed through the fixing hole and screwed into the fixing post;

[0015] The front support member and the vertical plate are both provided with a first adjustment groove extending in the height direction, and the front end of the upper cover and the rear side end of the base are both provided with a third hole, the tail end of the third fastener passes through the first adjustment groove and is inserted and tightened in the third hole, the front support member is arranged at the front end of the upper cover, and the rear support member and the positioning arm are arranged on the rear side of the same side of the base, the lower end of the positioning arm is arc-shaped and extends outward away from the base, the outer side of the arc plate and the outer side of the lower end of the positioning arm protrude from the outermost side of the depth control ring; a glue pulling hook is provided on the front side of the base, and the end of the glue pulling hook extends downward.

[0016] When cutting, the lower end of the front support is placed on the cutting line C, and the rubber tapper is rotated to a certain angle with the front support as a fulcrum. When the rear support contacts the cutting line C and the outer side of the positioning arm is close to the cutting surface B, the rubber tapper is pushed to move around along the cutting line C. At this time, the front support is separated from the cutting line C, and the rubber tapper enters the cutting state to tap rubber. In the process of the rubber tapper leaning against the cutting surface B and moving around along the cutting line C, the outer side of the positioning arm is always close to the cutting surface B, and the rear support is in contact with the cutting line C, so the rubber tree A will not be cut. The rubber line left on the cutting line C can be removed by the rubber pulling hook, and the staff does not need to clean it manually, which further improves the convenience during use.

[0017] Preferably, the above-mentioned U-shaped cutting system of a hand-held rotary cutting electric rubber tapping machine, the positioning arm includes a horizontal plate, a straight plate and an arc-shaped arm, the ends of the horizontal plate and the arc-shaped arm are respectively arranged at both ends of the straight plate, the horizontal plate is provided with a second adjustment groove extending along the length direction of the horizontal plate, the outer side wall of the arc-shaped arm is provided with a first side surface and a second side surface extending along the height direction, the first side surface and the second side surface are on different arc surfaces; a strip groove is provided on the base, a fourth hole is provided at the bottom of the strip groove, and a fourth fastener is also included, the horizontal plate is inserted into the strip groove and adheres to the inner surface of the strip groove, and the tail of the fourth fastener passes through the second adjustment groove and is tightened in the fourth hole.

[0018] Through the mutual cooperation of the second adjusting groove, the fourth fastener and the fourth hole, the adjustment of the distance between the outer side of the arc arm and the outer side of the depth control ring is achieved, so that the rubber tapping machine can perform rubber tapping with a positive knife low line or a negative knife; the horizontal plate is plugged into and matched with the strip groove and fixed to the base through the fourth fastener, the second adjusting groove and the fourth hole. On the one hand, it is convenient to align the fourth hole with the appropriate position of the second adjusting groove, and on the other hand, it realizes the embedded installation of the horizontal plate on the base, reducing the collision of the horizontal plate with external objects, and also realizes the horizontal direction limitation of the horizontal plate, preventing the horizontal plate from rotating when tightening the fourth fastener, and facilitating assembly and production.

[0019] Preferably, the U-shaped cutting system of the hand-held electric rotary rubber tapping machine described above also includes a fifth fastener, a through-groove and a fifth hole are provided on the base, the upper end of the cross baffle is bent toward the horizontal direction to form a connecting hook, a sixth hole is provided on the connecting hook, the connecting hook is inserted into the through-groove and plug-fitted, the end of the connecting hook passes through the through-groove and the lower surface of the connecting hook is in contact with the upper surface of the base, the fifth hole is opposite to the sixth hole, and the fifth fastener passes through the sixth hole and is tightened in the fifth hole.

[0020] The installation position and height of the cross baffle are limited by plugging and fitting the through-slot and the connecting hook. At the same time, when the fifth fastener is tightened in the fifth hole, the connecting hook will not rotate in the horizontal direction, thereby improving the convenience and stability of the installation of the cross baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the overall structure of the utility model from another angle;

[0023] Figure 3 This is a schematic diagram of the explosion structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the exploded structure of the gear box, depth control ring, blade, and horizontal baffle of the utility model;

[0025] Figure 5 This is a schematic diagram of the exploded structure of the depth control ring and blade from the back side of the utility model;

[0026] Figure 6 for Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 7 This is a schematic structural diagram of the depth control ring, base, horizontal baffle and side baffle of the utility model;

[0028] Figure 8 This is a structural diagram of the utility model in the glue collecting state;

[0029] Figure 9 It is a top view of the utility model in the glue collecting state. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-9 The present invention is further described in detail with reference to the following specific embodiments, but they are not intended to limit the present invention:

[0031] Example 1

[0032] like Figures 1-9 The U-shaped cutting system of a handheld rotary cutting electric rubber tapping machine includes a blade 1, a transmission assembly 11 and a gearbox 12, and also includes a gearbox 2, a depth control ring 3, a cross baffle 4 and a side baffle 41. The transmission assembly 11 is arranged in the gearbox 2, the input end of the transmission assembly 11 is connected to the output end of the gearbox 12, the output end of the transmission assembly 11 passes through the gearbox 2 and is connected to the depth control ring 3, the blade 1 is arranged on the lower surface of the depth control ring 3, and the gearbox 12 drives the depth control ring 3 to rotate through the transmission assembly 11; the cross baffle 4 protrudes outward along the diameter direction of the depth control ring 3, and the gearbox 2 and the cross baffle 4 are both provided with an L-shaped notch 5, the side end of the depth control ring 3 is inserted into the L-shaped notch 5, the lower surface of the side baffle 41 is located above the depth control ring 3, and the lower surface of the side baffle 41 and the inner wall of the L-shaped notch 5 form a first scraping rubber gap 6 with the depth control ring 3.

[0033] Preferably, the depth control ring 3 includes a ring body 31 and a connecting pipe 32, the connecting pipe 32 is arranged at the center of the ring body 31 and extends upward, and the output end of the transmission assembly 11 is connected to the connecting pipe 32; the gear box 2 is provided with an arc groove 20 located above the L-shaped notch 5, and the arc groove 20, the side wall of the cross baffle 4, and the side wall of the side baffle 41 are all opposite to the outer wall of the connecting pipe 32 and form a second scraping gap 61.

[0034] Preferably, the connecting pipe 32 is provided with positioning holes 321 and threaded holes 322 distributed from high to low, and the inner diameter of the positioning hole 321 is larger than the inner diameter of the threaded hole 322; the output end of the transmission assembly 11 includes a positioning section 111 and a threaded section 112, the threaded section 112 is inserted into the threaded hole 322 and threadedly connected, and the positioning section 111 is inserted into the positioning hole 321 and plugged into the positioning hole 321.

[0035] Preferably, a first hole 311 is provided on the lower surface of the ring body 31, and ridges 312 are provided on the lower surface of the ring body 31 on both sides of the first hole 311, the ends of the ridges 312 extend in directions away from each other, and a limiting block 313 is provided on the inner side wall of the ridge 312; an extension surface 100 is provided on both sides of the blade 1, a second hole 101 and a limiting groove 102 corresponding to the limiting block 313 are provided on the blade 1, the blade 1 is inserted between the ridges 312, the extension surface 100 is pressed against the inner side wall of the ridge 312, the limiting block 313 is inserted into the adjacent limiting groove 102 and the limiting block 313 is adapted to the shape of the limiting groove 102, the first hole 311 is opposite to the second hole 101; and it also includes a first fastener 7, which passes through the second hole 101 and is screwed into the first hole 311.

[0036] Preferably, the second fastener 71, the third fastener 72, the front support 8, the rear support 81 and the positioning arm 9 are further included. The front support 8 is bent and the lower end of the front support 8 extends downward in the vertical direction. The rear support 81 includes a vertical plate 811 and a curved plate 812.

[0037] The gearbox 2 includes an upper cover 21 and a base 22. The upper cover 21 is provided with a hollow fixing post 211. The base 22 is provided with a fixing hole 221. The upper cover 21 covers the base 22. The fixing post 211 is inserted into the fixing hole 221 and plugged in. The second fastener 71 passes through the fixing hole 221 and is screwed into the fixing post 211.

[0038] The front support member 8 and the vertical plate 811 are both provided with a first adjustment slot 82 extending in the height direction, and the front end of the upper cover 21 and the rear side end of the base 22 are both provided with a third hole 23. The tail end of the third fastener 72 passes through the first adjustment slot 82 and is inserted and tightened in the third hole 23. The front support member 8 is arranged at the front end of the upper cover 21, and the rear support member 81 and the positioning arm 9 are arranged on the rear side of the same side of the base 22. The lower end of the positioning arm 9 is arc-shaped and extends outward away from the base 22. The outer side of the arc plate 812 and the outer side of the lower end of the positioning arm 9 protrude from the outermost side of the depth control ring 3; a glue pulling hook 222 is provided on the front side of the base 22, and the end of the glue pulling hook 222 extends downward.

[0039] Preferably, the positioning arm 9 includes a horizontal plate 91, a straight plate 92 and an arc-shaped arm 93, and the ends of the horizontal plate 91 and the arc-shaped arm 93 are respectively arranged at the two ends of the straight plate 92, and the horizontal plate 91 is provided with a second adjustment groove 911 extending along the length direction of the horizontal plate 91, and the outer wall of the arc-shaped arm 93 is provided with a first side surface 931 and a second side surface 932 extending along the height direction, and the first side surface 931 and the second side surface 932 are on different arc surfaces; a strip groove 223 is provided on the base 22, and a fourth hole 224 is provided at the bottom of the strip groove 223, and also includes a fourth fastener 73, the horizontal plate 91 is inserted into the strip groove 223 and is attached to the inner surface of the strip groove 223, and the tail of the fourth fastener 73 passes through the second adjustment groove 911 and is screwed into the fourth hole 224.

[0040] Preferably, a fifth fastener 74 is further included. A through-groove 225 and a fifth hole 226 are provided on the base 22. The upper end of the cross baffle 4 is bent toward the horizontal direction to form a connecting hook 400. A sixth hole 401 is provided on the connecting hook 400. The connecting hook 400 is inserted into the through-groove 225 and plug-fitted. The end of the connecting hook 400 passes through the through-groove 225 and the lower surface of the connecting hook 400 is in contact with the upper surface of the base 22. The fifth hole 226 is opposite to the sixth hole 401. The fifth fastener 74 passes through the sixth hole 401 and is screwed into the fifth hole 226.

[0041] Specifically, such as Figure 1-Figure 4 As shown, the transmission assembly 11 includes an input shaft, an output shaft, an input helical gear and an output helical gear. The input shaft is arranged in the horizontal direction, and the output shaft is arranged in the vertical direction.

[0042] One end of the input shaft is connected to the gearbox 12, the input helical gear is arranged at the other end of the input shaft, and the output helical gear is coaxially arranged on the output shaft. The lower end of the output shaft is provided with a positioning section 111 and a threaded section 112. The lower end of the output shaft is fixed to the connecting pipe 32. The input helical gear and the output helical gear are engaged with each other. The gearbox 12 drives the input shaft to rotate, and the input shaft drives the output shaft to rotate through the input helical gear and the output helical gear.

[0043] like Figure 1 、 Figure 3 and Figure 7 As shown, a rectangular groove is formed on the front upper surface of the base 22, and through holes are formed on the bottom of the rectangular groove and the side walls of the base 22. The glue removal hook 222 and the side baffle 41 are fixed to the base 22 by screws and through holes. The side baffle 41 is provided with an inclined surface on the side facing the connecting tube 32. The inclined surface and the outer surface of the connecting tube 32 form a second glue scraping gap 61, which can more closely scrape away excess glue lines on the outside of the connecting tube 32.

[0044] More specifically, Figures 1-9 As shown, before cutting, the rubber line left on the cutting line c is first cleared by the rubber pulling hook 222. When cutting, the lower end of the front support 8 is placed on the cutting line c. The rubber tapping machine uses the front support 8 as a fulcrum and rotates a certain angle until the rear support 81 contacts the cutting line c. The second side surface 932 is close to the cutting surface b, pushing the rubber tapping machine to move around along the cutting line c. At this time, the front support 9 is separated from the cutting line c, and the rubber tapping machine enters the cutting state to tap rubber, which can be applied to rubber trees a with different diameters.

[0045] In the process of rubber tapping machine moving along the cutting surface b, along the cutting line c and along the H direction, the outside of the positioning arm 9 is always close to the cutting surface b, and the rear support member 81 contacts the cutting line c, and can not cut the rubber tree a. Simultaneously, the rubber line wound on the blade 1 and the depth control ring 3 can be squeezed and pushed and scraped off by the first scraping gap 6 and the second scraping gap 61, thereby improving the neatness of the blade 1 and the depth control ring 3 and improving the quality and efficiency of rubber tapping. By adjusting the length of the horizontal plate 91 inserted into the strip groove 223, the distance between the outside of the arcuate arm 93 and the outer wall of the depth control ring 3 can be adjusted, and the rubber tapping by the male cutter low line is switched to the female cutter rubber tapping.

[0046] In the embodiment of the present application, the blade 1 is U-shaped and the opening of the blade 1 is set upward, thereby accelerating the contact frequency between the blade 1 and the cutting surface b and the cutting line c over a period of time, improving the rubber tapping efficiency of the blade 1, and facilitating use.

[0047] In short, the above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made within the scope of the patent application for the present invention should fall within the scope of the present invention.

Claims

1. A U-shaped cutting system for a handheld rotary-cutting electric rubber tapper, comprising a blade (1), a transmission assembly (11) and a gearbox (12), characterized in that: The invention also includes a gear box (2), a depth control ring (3), a transverse baffle (4) and a side baffle (41), wherein the transmission assembly (11) is arranged in the gear box (2), the input end of the transmission assembly (11) is connected to the output end of the gearbox (12), the output end of the transmission assembly (11) passes through the gear box (2) and is connected to the depth control ring (3), the blade (1) is arranged on the lower surface of the depth control ring (3), and the gearbox (12) is driven by the transmission assembly (11). The depth control ring (3) rotates on its own; the transverse baffle (4) protrudes outward along the diameter direction of the depth control ring (3); the gear box (2) and the transverse baffle (4) are both provided with an L-shaped notch (5); the side end of the depth control ring (3) is inserted into the L-shaped notch (5); the lower surface of the side baffle (41) is located above the depth control ring (3); and a first scraping gap (6) is formed between the lower surface of the side baffle (41) and the inner wall of the L-shaped notch (5) and the depth control ring (3).

2. The U-shaped cutting system of a handheld rotary cutting electric rubber tapping machine according to claim 1, characterized in that: The depth control ring (3) comprises a ring body (31) and a connecting pipe (32), wherein the connecting pipe (32) is arranged at the center of the ring body (31) and extends upward, and the output end of the transmission assembly (11) is connected to the connecting pipe (32); the gear box (2) is provided with an arc groove (20) located above the L-shaped notch (5), and the arc groove (20), the side wall of the transverse baffle (4), and the side wall of the side baffle (41) are all opposite to the outer side wall of the connecting pipe (32) and form a second scraping gap (61).

3. The U-shaped cutting system of a handheld rotary cutting electric rubber tapping machine according to claim 2, characterized in that: The connecting pipe (32) is provided with positioning holes (321) and threaded holes (322) distributed from high to low, and the inner diameter of the positioning hole (321) is larger than the inner diameter of the threaded hole (322); the output end of the transmission assembly (11) includes a positioning section (111) and a threaded section (112), the threaded section (112) is inserted into the threaded hole (322) and threadedly connected, and the positioning section (111) is inserted into the positioning hole (321) and plugged into the positioning hole (321).

4. The U-shaped cutting system of a handheld rotary cutting electric rubber tapping machine according to claim 2, characterized in that: The lower surface of the ring body (31) is provided with a first hole (311), and the lower surface of the ring body (31) is provided with convex strips (312) located on both sides of the first hole (311), the ends of the convex strips (312) extend in directions away from each other, and a limiting block (313) is provided on the inner side wall of the convex strip (312); the blade (1) is provided with an extended surface (100) on both sides, and the blade (1) is provided with a second hole (101) and a limiting groove (101) corresponding to the limiting block (313). 02), the blade (1) is inserted between the convex strips (312), the extended surface (100) is pressed against the inner wall of the convex strip (312), the limit block (313) is inserted into the adjacent limit groove (102) and the limit block (313) is adapted to the shape of the limit groove (102), the first hole (311) is directly opposite to the second hole (101); and the first fastener (7) is also included, the first fastener (7) passes through the second hole (101) and is screwed into the first hole (311).

5. The U-shaped cutting system of a handheld rotary cutting electric rubber tapping machine according to claim 1, characterized in that: It also includes a second fastener (71), a third fastener (72), a front support member (8), a rear support member (81) and a positioning arm (9), wherein the front support member (8) is bent and the lower end of the front support member (8) extends downward in a vertical direction, and the rear support member (81) includes a vertical plate (811) and an arc-shaped plate (812); The gear box (2) comprises an upper cover (21) and a base (22); the upper cover (21) is provided with a fixing column (211) with a hollow interior; the base (22) is provided with a fixing hole (221); the upper cover (21) covers the base (22); the fixing column (211) is inserted into the fixing hole (221) and plug-fitted; the second fastener (71) passes through the fixing hole (221) and is screwed into the fixing column (211); The front support member (8) and the vertical plate (811) are both provided with a first adjustment groove (82) extending in the height direction, the front end of the upper cover (21) and the rear side end of the base (22) are both provided with a third hole (23), the tail end of the third fastener (72) passes through the first adjustment groove (82) and is inserted and tightened in the third hole (23), the front support member (8) is arranged at the front end of the upper cover (21), the rear support member (81) and the positioning arm (9) are arranged on the rear side of the same side of the base (22), the lower end of the positioning arm (9) is arc-shaped and extends outward away from the base (22), the outer side of the arc plate (812) and the outer side of the lower end of the positioning arm (9) protrude from the outermost side of the depth control ring (3); the front side of the base (22) is provided with a glue pulling hook (222), and the end of the glue pulling hook (222) extends downward.

6. The U-shaped cutting system of a handheld rotary cutting electric rubber tapper according to claim 5, characterized in that: The positioning arm (9) comprises a horizontal plate (91), a straight plate (92) and an arc-shaped arm (93), the ends of the horizontal plate (91) and the arc-shaped arm (93) are respectively arranged at the two ends of the straight plate (92), the horizontal plate (91) is provided with a second adjustment slot (911) extending along the length direction of the horizontal plate (91), the outer side wall of the arc-shaped arm (93) is provided with a first side surface (931) and a second side surface (932) extending along the height direction, the first side surface ( 931) and the second side surface (932) are on different arc surfaces; a strip groove (223) is provided on the base (22), a fourth hole (224) is provided at the bottom of the strip groove (223), and a fourth fastener (73) is also included, the horizontal plate (91) is inserted into the strip groove (223) and is in contact with the inner surface of the strip groove (223), and the tail of the fourth fastener (73) passes through the second adjustment groove (911) and is screwed into the fourth hole (224).

7. The U-shaped cutting system of a handheld rotary cutting electric rubber tapper according to claim 5, characterized in that: The invention also includes a fifth fastener (74), a through-groove (225) and a fifth hole (226) are provided on the base (22), the upper end of the transverse baffle (4) is bent toward the horizontal direction to form a connecting hook (400), a sixth hole (401) is provided on the connecting hook (400), the connecting hook (400) is inserted into the through-groove (225) and plugged in, the end of the connecting hook (400) passes through the through-groove (225) and the lower surface of the connecting hook (400) is in contact with the upper surface of the base (22), the fifth hole (226) and the sixth hole (401) are opposite, and the fifth fastener (74) passes through the sixth hole (401) and is screwed into the fifth hole (226).

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