Carving knife with knife head convenient to replace

Abstract

The utility model provides a carving knife with a knife head convenient to replace, which comprises a carving knife handle, and further comprises a knife head protection sleeve, a knife head, a knife handle and a knife head, and the clamping and fixing structure is engraved in the cutter handle. An internal thread at the bottom of one connecting cylinder is in threaded connection with an external thread at the top of the other connecting cylinder, after screwing is conducted, a threaded sleeve is rotated, a clamping block is inserted into a clamping ring groove, the connecting cylinders are firmly connected through the clamping block, the remaining connecting cylinders are connected in sequence, and therefore the carving knife handle can be conveniently and rapidly assembled; according to the carving knife, the carving knife handle is convenient to disassemble, a user can select a proper knife head assembly according to the carving requirement and quickly exchange and assemble the knife head assembly, so that the carving efficiency is improved, the top is protected through the knife head protection sleeve, and the carving knife is compact in overall structure, light and convenient to carry and store.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engraving knife, especially to a convenient engraving knife of replacing tool bit. BACKGROUND

[0002] The engraving knife refers to various pointed steel carving tools, usually having a wooden handle to increase the comfort of holding. The design and manufacture of the engraving knife aim to meet the processing requirements of specific carving working conditions and various materials.

[0003] In the use process of the traditional engraving knife, the tool bit is usually inconvenient to disassemble and replace once damaged or needing replacement. In addition, the traditional engraving knife also has many inconveniences in carrying and storing, such as the tool bit easily scratching other objects or damaging itself. Therefore, how to better disassemble and assemble the tool bit of the engraving knife and better carry and store the whole engraving knife is an important problem to be solved in the design of the convenient engraving knife of replacing tool bit. SUMMARY

[0004] The utility model discloses a convenient engraving knife of replacing tool bit to solve the problem that the tool bit of the engraving knife is inconvenient to disassemble and assemble and carry and store.

[0005] The utility model discloses a convenient engraving knife of replacing tool bit to solve the problem that the tool bit of the engraving knife is inconvenient to disassemble and assemble and carry and store.

[0006] The utility model provides a convenient engraving knife of replacing tool bit, tool bit protection cover, tool bit protection cover screw connection is in the engraving knife handle,

[0007] The clamping fixing structure is inside the engraving knife handle, and the clamping fixing structure clamps and limits each section of the engraving knife handle.

[0008] Preferably, the tool bit protection cover is set as a conical structure, the top of the tool bit protection cover is arc-shaped, and the inner side wall of the bottom of the tool bit protection cover is provided with internal threads.

[0009] In the technical scheme, the tool bit protection cover is protected at the top to prevent the engraving knife from scratching other objects or damaging itself when not in use, thereby improving the safety of use.

[0010] Preferably, the engraving knife handle is composed of four connecting barrels, a first tool bit, a second tool bit, a third tool bit and a fourth tool bit, the top side wall of each of the four connecting barrels is inwardly reduced in a circular shape, the side wall of the reduced part of each of the four connecting barrels is provided with external threads, the inner side wall of the bottom of each of the four connecting barrels is provided with internal threads, the external threads and the internal threads on the connecting barrels are engaged with each other, and the first tool bit, the second tool bit, the third tool bit and the fourth tool bit are respectively fixedly connected to the top side wall of each of the four connecting barrels.

[0011] In the technical scheme, the four connecting barrels are connected with each other to form the engraving tool handle, and the stable engraving tool can be formed.

[0012] Preferably, the first tool head is a round tool head, the second tool head is a triangular tool head, the third tool head is an inclined tool head, and the fourth tool head is a flat tool head.

[0013] In the technical scheme, the four different tool heads facilitate the user to select the appropriate tool head assembly according to the engraving requirement, and the tool head assembly can be quickly replaced and assembled, so that the engraving efficiency is improved.

[0014] Preferably, sliding grooves one are formed in the side walls on both sides of the four connecting barrels, sliding grooves two are formed in the side walls on both sides of the reduced parts of the four connecting barrels, and external threads are arranged on the side walls of the barrel bodies of the connecting barrels above the sliding grooves two.

[0015] Preferably, the external threads on the connecting barrels and the internal threads on the tool head protective sleeve are engaged with each other.

[0016] In the technical scheme, the tool head protective sleeve can be threadedly connected to the connecting barrel.

[0017] Preferably, clamping ring grooves are formed in the inner side walls of the four connecting barrels and the tool head protective sleeve.

[0018] Preferably, the clamping and fixing structure comprises a moving block, a connecting rod, a moving plate, a clamping block, a fixing block, a spring and a fixing rod, the fixing block is fixedly connected to the top inner side wall of the connecting barrel, the fixing rod is fixedly connected between the fixing block and the inner side wall of the connecting barrel, the moving plate is slidably connected to the fixing rod, the spring is fixedly connected between the moving plate and the fixing block, the clamping block is fixedly connected to the side wall on the other side of the moving plate, the clamping block is slidably connected in the sliding groove two, one end of the connecting rod is rotatably connected to the side wall of the moving plate, the other end of the connecting rod is rotatably connected to the moving block, and the moving block is slidably connected in the sliding groove one.

[0019] In the technical scheme, the moving block moves towards the bottom of the sliding groove one, the moving block pulls the connecting rod, the connecting rod drives the moving plate to move, the spring expands, and the moving plate drives the clamping block to move and extend into the clamping ring groove.

[0020] Preferably, the clamping block and the clamping ring groove are matched with each other.

[0021] In the technical scheme, the clamping block is inserted into the clamping ring groove, the clamping block limits the movement of the connecting barrel above, and since the two connecting barrels are threadedly connected, the movement is limited, so that the two connecting barrels cannot rotate relative to each other, thereby making the connecting barrels firmly connected with each other.

[0022] Preferably, the snap-fit ​​fixing structure includes a connecting slider, a threaded collar, and a rotating ring groove. The threaded collar is threadedly connected to the body of the connecting cylinder. A rotating ring groove is formed on the inner side wall of the threaded collar. The connecting slider is rotatably connected in the rotating ring groove. The connecting slider is fixedly connected to the side wall of the moving block.

[0023] In this technical solution, when the threaded sleeve is rotated, the threaded collar moves, and the movement of the threaded collar pushes the connecting slider to move, which in turn drives the moving block to move.

[0024] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0025] The positive and progressive effects of this utility model are as follows:

[0026] 1. The internal thread at the bottom of one connecting cylinder is connected to the external thread at the top of another connecting cylinder. After tightening, the threaded sleeve is rotated, and the threaded collar moves, pushing the locking block to extend out of the sliding groove and insert into the locking ring groove. The locking block restricts the movement of the upper connecting cylinder. Because the two connecting cylinders are connected by threads and their movement is restricted, the two connecting cylinders cannot rotate relative to each other, thus making the connecting cylinders firmly connected to each other. The remaining connecting cylinders are connected in sequence, which facilitates the quick assembly of the carving tool handle and forms a stable carving tool.

[0027] 2. The engraving tool handle of this application is easy to disassemble. Users can select the appropriate tool head component according to their engraving needs and quickly replace and assemble it, thereby improving engraving efficiency.

[0028] 3. The top is protected by a blade guard to prevent the carving knife from scratching other objects or being damaged when not in use, thus improving safety. The carving knife has a compact and lightweight overall structure, making it easy to carry and store. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0030] Figure 2 This is a schematic diagram of the overall internal structure of this utility model.

[0031] Figure 3 This is a schematic diagram of the disassembled three-dimensional structure of the carving knife handle of this utility model.

[0032] Figure 4 This is a three-dimensional structural diagram of the cutter head protective sleeve of this utility model.

[0033] Figure 5 This is a three-dimensional structural diagram of the connecting cylinder of this utility model.

[0034] Figure 6 The utility model discloses Figure 2 A place local amplification structure schematic diagram of

[0035] Mark explanation

[0036] 1, tool bit protective sleeve, 2, engraving tool handle, 201, connecting cylinder, 202, first tool bit, 204, second tool bit, 204, third tool bit, 205, fourth tool bit, 211, sliding groove one, 212, sliding groove two, 3, clamping fixed structure, 301, moving block, 302, connecting rod, 303, moving plate, 304, clamping block, 305, fixed block, 306, spring, 307, fixed rod, 311, connecting sliding block, 312, threaded sleeve ring, 313, rotating ring groove, 4, clamping ring groove. Specific implementation

[0037] The utility model will be further explained by the mode of embodiment below, but will not therefore limit the utility model in the embodiment range.

[0038] As Figures 1-6 Indicated, a kind of engraving tool of tool bit convenient replacement, including engraving tool handle 2, still include:

[0039] Tool bit protective sleeve 1, the tool bit protective sleeve 1 is connected by screw on engraving tool handle 2;

[0040] Clamping fixed structure 3, the clamping fixed structure 3 engraving tool handle 2 inside, the clamping fixed structure 3 is to each section of engraving tool handle 2 and is clamped to limit.

[0041] The tool bit protective sleeve 1 is set into conical structure, the top of the tool bit protective sleeve 1 is circular arc, and the inner wall on the bottom of the tool bit protective sleeve 1 is provided with internal thread.

[0042] Tool bit protective sleeve 1 is protected in top, to prevent engraving tool from scratching other articles or itself when not being used, improve the security of use.

[0043] The engraving tool handle 2 is composed of four connecting cylinders 201, first tool bit 202, second tool bit 204, third tool bit 204 and fourth tool bit 205, the top sidewall of four connecting cylinders 201 is inwardly circularly reduced, the sidewall on the reduced place of four connecting cylinders 201 is provided with external thread, the inner sidewall on the bottom of four connecting cylinders 201 is provided with internal thread, the external thread and internal thread on the connecting cylinder 201 are engaged with each other, and the top sidewall of four connecting cylinders 201 is respectively fixedly connected with first tool bit 202, second tool bit 204, third tool bit 204 and fourth tool bit 205.

[0044] Four connecting barrels 201 are connected to each other to form the engraving tool handle 2.

[0045] The first tool head 202 is a round tool head, the second tool head 204 is a triangular tool head, the third tool head 204 is an inclined tool head, and the fourth tool head 205 is a flat tool head.

[0046] The four different tool heads facilitate users to select appropriate tool head assemblies according to engraving needs, quickly replace and assemble, and thus improve engraving efficiency.

[0047] Sliding grooves one 211 are formed in the side walls of the two sides of the four connecting barrels 201, and sliding grooves two 212 are formed in the side walls of the two sides of the reduced parts of the four connecting barrels 201.

[0048] The external threads on the connecting barrels 201 and the internal threads on the tool head protective sleeve 1 are engaged with each other.

[0049] The tool head protective sleeve 1 can be threadedly connected to the connecting barrels 201.

[0050] Clamping ring grooves 4 are formed in the inner side walls of the four connecting barrels 201 and the tool head protective sleeve 1.

[0051] The clamping and fixing structure 3 comprises a moving block 301, a connecting rod 302, a moving plate 303, a clamping block 304, a fixing block 305, a spring 306, and a fixing rod 307. The fixing block 305 is fixedly connected to the top inner side wall of the connecting barrel 201. The fixing rod 307 is fixedly connected between the fixing block 305 and the inner side wall of the connecting barrel 201. The moving plate 303 is slidably connected to the fixing rod 307. The spring 306 is fixedly connected between the moving plate 303 and the fixing block 305. The clamping block 304 is fixedly connected to the side wall on the other side of the moving plate 303. The clamping block 304 is slidably connected in the sliding groove two 212. One end of the connecting rod 302 is rotatably connected to the side wall of the moving plate 303. The other end of the connecting rod 302 is rotatably connected to the moving block 301. The moving block 301 is slidably connected in the sliding groove one 211.

[0052] The moving block 301 moves toward the bottom of the sliding groove one 211. The moving block 301 pulls the connecting rod 302 to move. The connecting rod 302 drives the moving plate 303 to move. The spring 306 is expanded. The moving plate 303 drives the clamping block 304 to move and extend out of the sliding groove two 212 to be inserted into the clamping ring groove 4.

[0053] The clamping block 304 and the clamping ring groove 4 are matched with each other.

[0054] The snap-fit ​​block 304 is inserted into the snap-fit ​​ring groove 4. The snap-fit ​​block 304 restricts the movement of the upper connecting cylinder 201. Since the two connecting cylinders 201 are connected by threads and their movement is restricted, the two connecting cylinders 201 cannot rotate relative to each other, thus making the connecting cylinders 201 firmly connected to each other.

[0055] The snap-fit ​​fixing structure 3 includes a connecting slider 311, a threaded collar 312, and a rotating ring groove 313. The threaded collar 312 is threadedly connected to the body of the connecting cylinder 201. A rotating ring groove 313 is provided on the inner side wall of the threaded collar 312. The connecting slider 311 is rotatably connected in the rotating ring groove 313. The connecting slider 311 is fixedly connected to the side wall of the moving block 301.

[0056] When the threaded sleeve is rotated, the threaded collar 312 will move. The movement of the threaded collar 312 pushes the connecting slider 311 to move, and the connecting slider 311 drives the moving block 301 to move.

[0057] When this utility model is used and assembled, the internal thread at the bottom of one connecting cylinder 201 is threaded onto the external thread at the top of another connecting cylinder 201. After tightening, the threaded sleeve is rotated. Because the connecting ring is threadedly connected to the connecting cylinder 201, the threaded ring 312 will move when it rotates. The movement of the threaded ring 312 pushes the connecting slider 311 to move. The connecting slider 311 drives the moving block 301 to move. The moving block 301 moves towards the bottom of the sliding groove 211. The movement of the moving block 301 pulls the connecting rod 302. The connecting rod 302 drives the moving plate 303 to move. The spring 306 unfolds. The moving plate 303 drives the snap-fit ​​block 304 to move out of the sliding groove 212 and insert into the snap-fit ​​ring groove 4.

[0058] The movement of the upper connecting cylinder 201 is restricted by the snap-fit ​​block 304. Since the two connecting cylinders 201 are connected by threads and their movement is restricted, the two connecting cylinders 201 cannot rotate relative to each other, thus making the connecting cylinders 201 firmly connected to each other. The remaining connecting cylinders 201 are also connected in sequence, and the four connecting cylinders 201 are connected to each other to form the engraving handle 2, forming a stable engraving knife.

[0059] When disassembling, the threaded sleeve ring 312 is reversely rotated again, the threaded sleeve ring 312 drives the moving block 301 to move upwards to the sliding groove 211, the moving block 301 drives the clamping block 304 to move to disengage from the clamping ring groove 4 through the connecting rod 302, the movement of the connecting cylinder 201 is no longer restricted, the connecting cylinder 201 is reversely rotated again, four connecting cylinders 201 can be disassembled, the connecting cylinder 201 is convenient to disassemble, users can select appropriate tool bit assemblies according to carving needs, quickly assemble and disassemble, so that the carving efficiency is improved, the tool bit protection sleeve 1 is protected at the top, so that the carving tool is prevented from scratching other objects or being damaged when not in use, and the safety in use is improved.

[0060] The utility model is not limited to the above-mentioned embodiment, no matter makes any change in its shape or structure, all fall in the protection scope of the utility model. The protection scope of the utility model is defined by the appended claims, and the skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, but these changes and modifications all fall into the protection scope of the utility model.

Claims

1. A graver with a replaceable point, comprising a graver handle (2), characterized in that, Also include: The tool bit protective sleeve (1) is threadedly connected on the engraving tool handle (2); The clamping fixing structure (3) is inside the engraving tool handle (2), and the clamping fixing structure (3) clamps and limits each section of the engraving tool handle (2).

2. The quick-change tool bit of claim 1, wherein: The tool bit protective sleeve (1) is provided in a conical structure, the top of the tool bit protective sleeve (1) is in a circular arc shape, and an internal thread is arranged on the inner side wall of the bottom of the tool bit protective sleeve (1).

3. The quick-change tool bit of claim 1, wherein: The engraving tool handle (2) is composed of four connecting barrels (201), a first tool bit (202), a second tool bit (203), a third tool bit (204) and a fourth tool bit (205), the top side wall of the four connecting barrels (201) is inwardly reduced in a circular shape, external threads are arranged on the side walls of the reduced portions of the four connecting barrels (201), internal threads are arranged on the inner side walls of the bottoms of the four connecting barrels (201), the external threads and the internal threads on the connecting barrels (201) are engaged with each other, and the first tool bit (202), the second tool bit (203), the third tool bit (204) and the fourth tool bit (205) are fixedly connected to the top side walls of the four connecting barrels (201) respectively.

4. The quick-change tool bit of claim 3, wherein: The first tool bit (202) is a circular tool bit, the second tool bit (203) is a triangular tool bit, the third tool bit (204) is an inclined tool bit, and the fourth tool bit (205) is a flat tool bit.

5. The quick-change tool bit of claim 3, wherein: Sliding grooves one (211) are formed in the side walls on both sides of the four connecting barrels (201), sliding grooves two (212) are formed in the side walls on both sides of the reduced portions of the four connecting barrels (201), and external threads are arranged on the barrel body side walls of the connecting barrels (201) above the sliding grooves two (212).

6. The quick-change tool bit of claim 3, wherein: The external threads on the connecting barrels (201) and the internal threads on the tool bit protective sleeve (1) are engaged with each other.

7. The quick-change tool bit of claim 6 wherein: Clamping ring grooves (4) are formed in the inner side walls of the four connecting barrels (201) and the tool bit protective sleeve (1).

8. The quick-change tool bit of claim 1, wherein: The clamping fixing structure (3) comprises a moving block (301), a connecting rod (302), a moving plate (303), a clamping block (304), a fixed block (305), a spring (306) and a fixed rod (307), the fixed block (305) is fixedly connected to the top inner side wall of the connecting barrel (201), the fixed rod (307) is fixedly connected between the fixed block (305) and the inner side wall of the connecting barrel (201), the moving plate (303) is slidably connected to the fixed rod (307), the spring (306) is fixedly connected between the moving plate (303) and the fixed block (305), the clamping block (304) is fixedly connected to the side wall on the other side of the moving plate (303), the clamping block (304) is slidably connected in the sliding groove two (212), one end of the connecting rod (302) is rotatably connected to the side wall of the moving plate (303), the other end of the connecting rod (302) is rotatably connected to the moving block (301), and the moving block (301) is slidably connected in the sliding groove one (211).

9. The quick-change tool bit of claim 8, wherein: The clamping block (304) and the clamping ring groove (4) are matched with each other.

10. The quick-change tool bit of claim 8, wherein: The clamping fixing structure (3) comprises a connecting sliding block (311), a threaded sleeve ring (312) and a rotating ring groove (313), the threaded sleeve ring (312) is threadedly connected on the barrel of the connecting barrel (201), the inner side wall of the threaded sleeve ring (312) is provided with the rotating ring groove (313), the connecting sliding block (311) is rotatably connected in the rotating ring groove (313), and the connecting sliding block (311) is fixedly connected on the side wall of the moving block (301).

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