CN209806672U - Tapping knife with quickly replaceable knife head - Google Patents

Abstract

The utility model discloses a but rubber tapping knife of quick replacement tool bit, including the knife rest, tool bit and gyro wheel, the gyro wheel is installed at the top of knife rest, the tool bit includes the cutting edge, cutter arbor and triangle dish, the bottom of triangle dish is located to the cutter arbor, the top of triangle dish is located to the cutting edge, the terminal surface of knife rest is equipped with the constant head tank of embedding triangle dish, the constant head tank bottom is equipped with the locating hole, in the cutter arbor embedding locating hole, still include the centre gripping dish, the centre gripping dish includes the nut, slip ring and supporting rod, nut and knife rest threaded connection, slip ring and nut rotate to be connected, be fixed with the supporting rod on the nut, the top of supporting rod is equipped with the lug that compresses tightly the triangle dish, the periphery of knife rest is equipped with the U-shaped leading truck, the supporting rod is cliied. The tool bit is tightly clamped on the tool rest, the tool bit can be detached by loosening the clamping structure, and the convenience of operation is improved on the premise of ensuring the stability of the tool bit.

Description

Tapping knife with quickly replaceable knife head

Technical Field

The utility model relates to a rubber tapping knife technical field, in particular to but rubber tapping knife of quick replacement tool bit.

Background

The rubber tapping machine is used for replacing manual rubber tapping, generally include upper and lower track, remove assembly and actuating mechanism, upper and lower track is fixed on rubber tree, move the assembly and make spiral motion around rubber tree under actuating mechanism's drive, install the rubber tapping sword on the removal assembly, to the bark cutting of rubber tree when the tool bit of rubber tapping sword removes, because the toughness of rubber tree bark, in order to improve the stability of tool bit, the tool bit is usually through welding or a plurality of bolt fastening's mode snap-on the knife rest, inconvenient tool bit of taking off after the tool bit becomes blunt.

Disclosure of Invention

To the above-mentioned prior art, the utility model provides a but rubber tapping knife of quick replacement tool bit, the tool bit is pressed from both sides tightly on the knife rest, loosens the tight structure of clamp and can dismantle the tool bit, guarantees to improve the convenience of operation under the stable prerequisite of tool bit.

The technical scheme of the invention is realized as follows:

a tapping knife with a fast replaceable knife head comprises a knife rest, a knife head and a roller, the roller is arranged on the top of the knife rest, the cutter head comprises a cutting edge, a cutter bar and a triangular disc, the cutter bar is arranged at the bottom of the triangular disc, the cutting edge is arranged at the top of the triangular disc, the end surface of the knife rest is provided with a positioning groove embedded into the triangular disc, the bottom of the positioning groove is provided with a positioning hole, the cutter bar is embedded into the positioning hole, the cutter bar further comprises a clamping disc, the clamping disc comprises a nut, a sliding ring and a clamping rod, the nut is in threaded connection with the tool rest, the sliding ring is in rotational connection with the nut, the clamping rod is fixed on the nut, the top end of the clamping rod is provided with a convex block for pressing the triangular disc, the periphery of the knife rest is provided with a U-shaped guide frame, the clamping rods are clamped by the U-shaped guide frame and slide back and forth along the U-shaped guide frame.

Further, the length of the cutter bar is 5-10 cm.

Furthermore, the number of the clamping rods is 3, and the clamping rods are uniformly distributed on the periphery of the sliding ring.

Furthermore, the convex block is tightly pressed at the vertex part of the triangular disc, the cutter bar is positioned at the center of the triangular disc, the roller is installed at the top of the cutter frame through an installation seat, and the distance from the installation seat to the center of the cutter bar is greater than that from the vertex of the triangular disc to the center of the cutter bar.

Furthermore, the positioning groove is triangular.

Furthermore, a chamfer angle is arranged at the vertex part of the triangular disc.

Furthermore, the slip ring is provided with an annular slide rail, the nut is provided with an annular slide groove, and the annular slide rail slides in the annular slide groove.

Furthermore, the surface of the nut is provided with an anti-skid structure.

Furthermore, the positioning groove also comprises a plurality of cushion blocks, and the cushion blocks are arranged in the positioning groove.

The beneficial effects of the utility model reside in that: when the cutter head is installed, the cutter rod is inserted into the positioning hole, the triangular disc is embedded into the positioning groove, then the nut is rotated, the lug of the clamping rod moves towards the triangular disc and compresses the triangular disc, and the cutter head is not easy to shake after the triangular disc is clamped due to the fact that the cutter rod is inserted into the deep positioning hole, and stability is high. When the tool bit needs to be removed, the triangular disc is loosened by rotating the nut, and the tool bit is convenient to take out. In the whole operation process, only one nut needs to be rotated. After the cutter head is taken out, the cutter head is provided with a cutter bar, the cutter bar can be held by hand, a grinding machine is used for grinding the cutting edge, and the operation is convenient.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive effort.

Fig. 1 is a schematic view of a three-dimensional structure of a tapping knife with a quick replaceable cutting head of the utility model;

fig. 2 is a schematic view of a three-dimensional structure of a rubber tapping knife capable of rapidly replacing a knife head in a disassembly and assembly state of the rubber tapping knife of the utility model;

FIG. 3 is an exploded view of a tapping knife with a quick replaceable cutting head according to the present invention;

FIG. 4 is a schematic view of the area A in FIG. 3 according to the present invention;

in the figure, 1 knife rest, 2 knife heads, 3 rollers, 4 cutting edges, 5 knife rods, 6 triangular discs, 7 positioning grooves, 8 positioning holes, 9 clamping discs, 10 nuts, 11 sliding rings, 12 clamping rods, 13 convex blocks, 14U-shaped guide frames, 15 chamfers, 16 annular sliding rails, 17 annular sliding grooves, 18 anti-skidding structures and 19 cushion blocks.

Detailed Description

In order to better understand the technical content of the present invention, the following embodiments are provided, and the present invention is further described with reference to the accompanying drawings.

Referring to fig. 1 to 4, a tapping knife capable of rapidly replacing a knife head comprises a knife rest 1, a knife head 2, a roller 3 and a clamping disc 9, wherein the roller 3 is installed at the top of the knife rest 1, the knife head 2 comprises a cutting edge 4, a knife bar 5 and a triangular disc 6, the knife bar 5 is arranged at the bottom of the triangular disc 6, the cutting edge 4 is arranged at the top of the triangular disc 6, a positioning groove 7 embedded in the triangular disc 6 is arranged on the end surface of the knife rest 1, a positioning hole 8 is arranged at the bottom of the positioning groove 7, the knife bar 5 is embedded in the positioning hole 8, the clamping disc 9 comprises a nut 10, a sliding ring 11 and a clamping rod 12, the nut 10 is in threaded connection with the knife rest 1, the sliding ring 11 is in rotational connection with the nut 10, the clamping rod 12 is fixed on the nut 10, a protruding block 13 for pressing the triangular disc 6 is arranged at the top end of the, the tool post 1 is provided at the outer circumference thereof with a U-shaped guide 14, and the clamping rod 12 is clamped by the U-shaped guide 14 and slides back and forth along the U-shaped guide 14.

The tool rest 1 is arranged on a moving frame of the tapping machine and moves spirally along with the moving frame. The top of the tool rest 1 is provided with the roller 3, so that the feed amount can be conveniently controlled. Tool bit 2 includes cutting edge 4, cutter arbor 5 and triangular plate 6, the bottom of triangular plate 6 is located to cutter arbor 5, cutting edge 4 is located triangular plate 6's top, cutter arbor 5's length is 5 ~ 10cm, and the top of knife rest 1 is equipped with constant head tank 7, and the bottom intercommunication locating hole 8 of constant head tank 7, cutter arbor 5 insert in the locating hole 8 with the laminating of locating hole 8, simultaneously triangular plate 6 imbeds and the laminating of constant head tank 7 in with constant head tank 7, avoid the locating lever to rock, improve tool bit 2's stability. The clamping disc 9 is used for clamping the tool bit 2 inserted into the tool holder 1, the clamping disc 9 comprises a nut 10, a sliding ring 11 and a clamping rod 12, the nut 10 is in threaded connection with the tool holder 1, the nut 10 can move along the axial direction of the tool holder 1 by rotating the nut 10, the nut 10 is in rotational connection with the sliding ring 11, and the sliding ring 11 is driven to move along the axial direction of the tool holder 1 when the nut 10 rotates. The U-shaped guide frame 14 is arranged on the tool rest 1, the U-shaped guide frame 14 is a guide frame of a U-shaped structure and composed of a guide block and a groove arranged in the middle of the guide block, the clamping rod 12 is arranged at the groove of the U-shaped guide frame, the groove is a sliding groove for the clamping rod 12 to slide, and the opening of the U-shaped guide frame surrounds the clamping rod 12 towards the tool rest 1, so that the clamping rod 12 can only move along the axial direction of the tool rest 1 and cannot rotate. Clamping rod 12 and slip ring 11 fixed connection drive slip ring 11 and slide when nut 10 rotates, and the top of clamping rod 12 is equipped with the lug 13 that compresses tightly triangular plate 6, and lug 13 and triangular plate 6 contact compress tightly triangular plate 6, avoid cutter arbor 5 to rock. When installing tool bit 2, insert cutter arbor 5 in locating hole 8, in triangular dish 6 embedding constant head tank 7, rotate nut 10 after that, make the lug 13 of supporting rod 12 remove to triangular dish 6 and compress tightly triangular dish 6, because cutter arbor 5 inserts very dark locating hole 8, consequently triangular dish 6 is difficult to rock by the tight back tool bit 2 of clamp, and stability is high. When the cutter head 2 needs to be removed, the triangular disc 6 is loosened by rotating the nut 10, and the cutter head 2 is convenient to take out. During the whole operation, only one nut 10 needs to be rotated. After the tool bit 2 is taken out, the tool bit 2 is provided with a tool bar 5, the tool bar 5 can be held by hand to polish the cutting edge 4 by using a polisher, and the operation is convenient.

Specifically, the number of the clamping rods 12 is 3, and the clamping rods 12 are uniformly distributed around the sliding ring 11. So that the triangular plate 6 is evenly stressed. Furthermore, the convex blocks 13 are pressed on the top points of the triangular plate 6, and the number of the clamping rods 12 corresponds to that of the top points of the triangular plate 6, so that the triangular plate is convenient to fix. The cutter bar 5 is located at the center of the triangular disc 6, the roller 3 is installed at the top of the cutter rest 1 through an installation seat, the distance from the installation seat to the center of the cutter bar 5 is greater than the distance from the top point of the triangular disc 6 to the center of the cutter bar 5, and the distance from the convex block 13 to the center of the cutter bar 5 is less than the distance from the edge of the triangular disc 6 to the center of the cutter bar 5. After the clamping rods 12 are loosened by a certain distance, the cutter bar 5 is pulled out by a certain distance, so that the triangular disc 6 is separated from the positioning groove 7, the cutter head 2 is rotated around the cutter bar 5, the vertex position of the triangular disc 6 is staggered with the convex block 13 of the clamping rods 12, and then the cutter head 2 is taken out. The tool bit 2 can be taken out only by rotating the nut 10 to move a small distance, and the operation is convenient.

Specifically, the positioning groove 7 is triangular. The triangular structure also facilitates the positioning of the position of the cutting head 2, corresponding to the structure of the triangular disc 6. Furthermore, the vertex part of the triangular disc 6 is provided with a chamfer 15, so that the tip of the triangular disc 6 is prevented from scratching a human body. Furthermore, the orientation of the cutter head 2 is parallel to the rolling direction of the roller 3, and the rolling direction of the roller 3 is the same as the advancing direction of the cutter head 2, so that rubber tapping is facilitated. The triangular positioning slot 7 facilitates the determination of the installation angle.

Specifically, the sliding ring 11 is provided with an annular sliding rail 16, the nut 10 is provided with an annular sliding groove 17, and the annular sliding rail 16 slides in the annular sliding groove 17. The annular slide rail 16 and the annular slide groove 17 cooperate with each other to prevent the slide ring 11 from coming off the nut 10.

Specifically, the surface of the nut 10 is provided with an anti-slip structure 18. The surface friction effect of the nut 10 is improved, and the nut 10 is convenient to rotate.

Specifically, the positioning device further comprises a plurality of cushion blocks 19, and the cushion blocks 19 are arranged in the positioning grooves 7. A certain number of cushion blocks 19 are dotted into the positioning groove 7, so that the length of the tool bit 2 extending out of the tool rest 1 can be adjusted, and the tool feeding amount can be adjusted conveniently.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A tapping knife with a fast replaceable knife head comprises a knife rest, a knife head and a roller, the roller is arranged on the top of the knife rest, it is characterized in that the cutter head comprises a cutting edge, a cutter bar and a triangular disc, the cutter bar is arranged at the bottom of the triangular disc, the cutting edge is arranged at the top of the triangular disc, the end surface of the knife rest is provided with a positioning groove embedded into the triangular disc, the bottom of the positioning groove is provided with a positioning hole, the cutter bar is embedded into the positioning hole, the cutter bar further comprises a clamping disc, the clamping disc comprises a nut, a sliding ring and a clamping rod, the nut is in threaded connection with the tool rest, the sliding ring is rotationally connected with the nut, the clamping rod is fixed on the nut, a convex block for compressing the triangular disc is arranged at the top end of the clamping rod, the periphery of the tool rest is provided with a U-shaped guide frame, and the clamping rod is clamped by the U-shaped guide frame and slides in a reciprocating mode along the U-shaped guide frame.

2. The tapping knife capable of rapidly replacing the knife head as claimed in claim 1, wherein the length of the knife bar is 5-10 cm.

3. The tapping knife capable of rapidly replacing the knife head as claimed in claim 1, wherein the number of the clamping rods is 3, and the clamping rods are uniformly distributed around the sliding ring.

4. The tapping knife capable of changing the cutting head rapidly as claimed in claim 1, wherein the projection presses against the apex of the triangular disc, the knife bar is located at the center of the triangular disc, the roller is mounted on the top of the knife holder through a mounting seat, and the distance from the mounting seat to the center of the knife bar is greater than the distance from the apex of the triangular disc to the center of the knife bar.

5. The tapping knife capable of changing knife heads rapidly as claimed in claim 1, wherein the positioning groove is triangular.

6. The tapping knife capable of changing knife heads rapidly as claimed in claim 1, wherein the apex of the triangular disc is chamfered.

7. The tapping knife capable of rapidly replacing a knife head as claimed in claim 1, wherein the sliding ring is provided with an annular slide rail, the nut is provided with an annular slide groove, and the annular slide rail slides in the annular slide groove.

8. The tapping knife capable of rapidly replacing a cutting head as claimed in claim 1, wherein the surface of the nut is provided with anti-slip structures.

9. The tapping knife capable of rapidly replacing a knife head as claimed in claim 1, further comprising a plurality of spacers disposed in said positioning groove.