Cutting knife capable of automatically replacing blade

Abstract

The utility model discloses a cutting knife capable of automatically replacing a blade, which comprises a cutting knife rest, the cutting knife rest is used for positioning the cutting knife, the inner wall of the cutting knife rest is fixedly provided with an automatic knife replacing mechanism, and the other end of the inner wall of the cutting knife rest is fixedly provided with a positioning driving mechanism; the automatic tool changing mechanism comprises a positioning shaft, and the outer wall of the positioning shaft is connected with the middle position of the cutting tool rest in a penetrating mode. According to the cutting device, the sliding block slides downwards with force, so that the positioning clamping groove formed in one side of the sliding block is separated from the positioning clamping block, the positioning frame drives the fixing frame and the cutting blade to move through the first limiting groove and the positioning column, and the cutting blade can conveniently fall off by rotating the cutting tool rest; the cutting blade to be replaced is installed in the middle of the first limiting groove through the fixing frame and the positioning hole, so that the cutting blade is stably installed and positioned, the convenience of replacing the blade of the cutting knife is improved, and the hidden danger of accidental damage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting knives, in particular to a cutting knife with automatically replaced blades. Background Art

[0002] The cutting knife is one of the most basic and commonly used knives in the field of cutting. It is usually designed to be lightweight and handheld, with sharp blades, suitable for cutting materials such as paper, plastic, cloth, leather, etc. The blade of the cutting knife has two shapes: curved and straight. Choose the appropriate shape according to the needs of cutting.

[0003] In the prior art, when replacing the blade of a cutting knife, it is usually necessary to manually disassemble and assemble the bolt thread, which makes the disassembly and assembly of the cutting knife cumbersome. In addition, the blade is sharp, which may easily cause accidental injury when disassembling and assembling the bolt, reducing the convenience of using the cutting knife. Therefore, a cutting knife with automatic blade replacement is needed. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a cutting knife with automatically replaceable blades to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model proposes a cutting knife with automatic blade replacement, comprising a cutting knife holder, the cutting knife holder is used for positioning the cutting knife, an automatic blade changing mechanism is fixedly arranged on the inner wall of the cutting knife holder, and a positioning drive mechanism is fixedly arranged on the other end of the inner wall of the cutting knife holder;

[0006] The automatic tool changing mechanism includes a positioning shaft, the outer wall of the positioning shaft is interlaced and connected with the middle position of the cutting tool holder, the bottom end of the positioning shaft is fixedly provided with a positioning frame, one side of the inner wall of the cutting tool holder is provided with a first positioning groove, one end of the inner wall of the first positioning groove is slidably provided with a positioning ring, the middle position of the positioning ring is fixedly connected with one end of the outer wall of the positioning shaft, the outer wall of the positioning shaft is interlaced with a spring, the two ends of the spring are respectively in contact with the bottom end of the inner wall of the first positioning groove and the bottom end of the positioning ring, a first limiting groove is provided in the middle position of one side of the positioning frame, both ends of the inner wall of the first limiting groove are fixedly provided with positioning columns, a second limiting groove is provided at the bottom end of one side of the cutting tool holder, and one side of the two positioning columns are in contact with the inner wall of the second limiting groove.

[0007] In one example, the automatic tool changing mechanism further includes a cutting blade, a non-slip pad is fixedly provided at the top end of the outer wall of the cutting blade, a fixing frame is fixedly provided at the top end of the cutting blade, and positioning holes are provided at both ends of the fixing frame.

[0008] In one example, the fixing frame is respectively engaged and connected with two positioning posts through positioning holes.

[0009] In one example, a fixing groove is formed at the top of one side of the cutting tool holder.

[0010] In one example, the positioning drive mechanism includes a lifting block, a second positioning groove is opened at the top of the inner wall of the cutting tool holder, the outer wall of the lifting block is slidably connected to one end of the inner wall of the second positioning groove, the bottom end of the lifting block is fixedly connected to the top of the positioning shaft, one end of the lifting block is fixedly provided with a sliding block through the fixed groove, and one side of the sliding block is fixedly provided with an anti-sliding block.

[0011] In one example, a positioning slot is provided at one end of one side of the sliding block, and a positioning block is fixedly provided at the top end of one side of the cutting tool holder.

[0012] In one example, the position of the positioning slot corresponds to the position of the positioning block.

[0013] The cutting knife with automatic blade replacement proposed by the utility model can bring the following beneficial effects:

[0014] 1. A cutting knife with automatic blade replacement, by sliding the sliding block downward with force, so that the positioning slot opened on one side of the sliding block is separated from the positioning block, and the positioning frame fixed at the bottom end of the positioning shaft slides along one side of the cutting knife holder, so that the positioning frame drives the fixing frame and the cutting blade to move through the first limiting groove and the positioning column, and the cutting knife holder is rotated to facilitate the cutting blade to fall, and the cutting blade to be replaced is installed in the middle position of the first limiting groove through the fixing frame and the positioning hole, so that the cutting blade is stably installed and positioned, thereby increasing the convenience of replacing the cutting knife blade and avoiding the hidden danger of accidental damage.

[0015] 2. The cutting knife with automatically replaceable blades is fixed on the outer wall of the positioning shaft through the extrusion of the positioning ring and the spring, so that in a natural state, the positioning shaft drives the positioning frame to stably contact and position on one side of the cutting knife frame, so that the cutting knife is stably installed, increasing the convenience of using the cutting knife with automatically replaceable blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the cutting knife in a cross-sectional view of the utility model;

[0019] Figure 3 This is a schematic diagram of the positioning shaft and positioning frame structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the cutting tool holder of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the cutting knife of the utility model;

[0022] Figure 6 For this utility model Figure 2 A is an enlarged schematic diagram of the node structure.

[0023] In the figure: 1. cutting tool holder; 2. positioning frame; 3. positioning shaft; 4. first positioning slot; 5. positioning ring; 6. spring; 7. cutting blade; 8. second positioning slot; 9. lifting block; 10. sliding block; 11. anti-sliding block; 12. positioning slot; 13. positioning block; 14. first limiting slot; 15. positioning column; 16. fixing slot; 17. second limiting slot; 18. anti-slip pad; 19. fixing frame; 20. positioning hole. DETAILED DESCRIPTION

[0024] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0025] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] The embodiments are as follows. The utility model provides Figure 1-6 The cutter with automatically replaceable blade shown in the figure comprises a cutter holder 1, which is used for positioning the cutter. An automatic cutter changing mechanism is fixedly arranged on the inner wall of the cutter holder 1, and a positioning drive mechanism is fixedly arranged on the other end of the inner wall of the cutter holder 1.

[0027] The automatic tool changing mechanism includes a positioning shaft 3, the outer wall of the positioning shaft 3 is interlaced and connected with the middle position of the cutting tool holder 1, the bottom end of the positioning shaft 3 is fixedly provided with a positioning frame 2, one side of the inner wall of the cutting tool holder 1 is provided with a first positioning groove 4, one end of the inner wall of the first positioning groove 4 is slidably provided with a positioning ring 5, the middle position of the positioning ring 5 is fixedly connected with one end of the outer wall of the positioning shaft 3, the outer wall of the positioning shaft 3 is interlaced with a spring 6, the two ends of the spring 6 are respectively in contact with the bottom end of the inner wall of the first positioning groove 4 and the bottom end of the positioning ring 5, a first limiting groove 14 is provided in the middle position of one side of the positioning frame 2, both ends of the inner wall of the first limiting groove 14 are fixedly provided with positioning columns 15, a second limiting groove 17 is provided at the bottom end of one side of the cutting tool holder 1, one side of the two positioning columns 15 are in contact with the inner wall of the second limiting groove 17, and the positioning of the second limiting groove 17 can avoid the hidden danger of the cutting blade 7 moving and shaking when the cutting knife is in use.

[0028] Furthermore, the automatic tool changing mechanism also includes a cutting blade 7 , a non-slip pad 18 is fixedly provided at the top end of the outer wall of the cutting blade 7 , a fixing frame 19 is fixedly provided at the top end of the cutting blade 7 , and positioning holes 20 are provided at both ends of the fixing frame 19 .

[0029] The fixing frame 19 is respectively engaged and connected with the two positioning posts 15 through the positioning holes 20 .

[0030] A fixing groove 16 is formed at the top of one side of the cutting tool holder 1 , and the length of the fixing groove 16 is the same as the displacement length of the positioning holder 2 .

[0031] Furthermore, the positioning drive mechanism includes a lifting block 9, a second positioning groove 8 is opened at the top of the inner wall of the cutting tool holder 1, the outer wall of the lifting block 9 is slidably connected to one end of the inner wall of the second positioning groove 8, the bottom end of the lifting block 9 is fixedly connected to the top of the positioning shaft 3, one end of the lifting block 9 is fixedly provided with a sliding block 10 through a fixed groove 16, and an anti-sliding block 11 is fixedly provided on one side of the sliding block 10.

[0032] Furthermore, a positioning slot 12 is provided at one end of one side of the sliding block 10 , and a positioning block 13 is fixedly provided at the top end of one side of the cutting tool holder 1 .

[0033] The position of the positioning slot 12 corresponds to the position of the positioning block 13 , and the positioning slot 12 is convenient for engagement and separation with the positioning block 13 .

[0034] Working principle: When the cutting knife needs to be replaced, the sliding block 10 is pushed downward with force, so that the positioning slot 12 opened on one side of the sliding block 10 is separated from the positioning block 13, so that the sliding block 10 passes through the fixed slot 16 to drive the lifting block 9 to move along the second positioning slot 8, so that the lifting block 9 drives the positioning shaft 3 to move along the first positioning slot 4, so that the positioning frame 2 fixed at the bottom end of the positioning shaft 3 slides along one side of the cutting knife frame 1, so that the positioning frame 2 drives the fixing frame 19 and the cutting blade through the first limiting slot 14 and the positioning column 15 7 is moved to facilitate the cutting blade 7 to move downward, and the cutting tool holder 1 is rotated to facilitate the cutting blade 7 to fall, and the cutting blade 7 to be replaced is installed in the middle position of the first limiting groove 14 through the fixing frame 19 and the positioning hole 20, so that the cutting blade 7 is stably installed and positioned, and the positioning ring 5 fixed on the outer wall of the positioning shaft 3 and the spring 6 are squeezed, so that in a natural state, the positioning shaft 3 drives the positioning frame 2 to stably contact and position on one side of the cutting tool holder 1, so that the cutting knife is stably installed, thereby increasing the convenience of using the cutting knife with automatic blade replacement.

[0035] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0036] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A cutting knife with automatically changing blades, comprising: A cutting knife holder (1), the cutting knife holder (1) is used for positioning a cutting knife, an automatic knife changing mechanism is fixedly provided on the inner wall of the cutting knife holder (1), and a positioning drive mechanism is fixedly provided on the other end of the inner wall of the cutting knife holder (1); The automatic tool changing mechanism is characterized in that: the automatic tool changing mechanism comprises a positioning shaft (3), the outer wall of the positioning shaft (3) is connected with the middle position of the cutting tool holder (1), a positioning frame (2) is fixedly arranged at the bottom end of the positioning shaft (3), a first positioning groove (4) is opened on one side of the inner wall of the cutting tool holder (1), a positioning ring (5) is slidably arranged at one end of the inner wall of the first positioning groove (4), the middle position of the positioning ring (5) is fixedly connected with one end of the outer wall of the positioning shaft (3), and the positioning shaft (3) is fixedly connected with the outer wall of the positioning shaft (3). A spring (6) is inserted into the outer wall, and two ends of the spring (6) are respectively in contact with the bottom end of the inner wall of the first positioning groove (4) and the bottom end of the positioning ring (5). A first limiting groove (14) is provided in the middle position of one side of the positioning frame (2), and positioning columns (15) are fixedly provided at both ends of the inner wall of the first limiting groove (14). A second limiting groove (17) is provided at the bottom end of one side of the cutting knife frame (1), and one side of the two positioning columns (15) are in contact with the inner wall of the second limiting groove (17).

2. A cutting knife with automatically replaceable blades according to claim 1, characterized in that: The automatic tool changing mechanism also includes a cutting blade (7), a non-slip pad (18) is fixedly provided at the top end of the outer wall of the cutting blade (7), a fixing frame (19) is fixedly provided at the top end of the cutting blade (7), and positioning holes (20) are provided at both ends of the fixing frame (19).

3. A cutting knife with automatically replaceable blade according to claim 2, characterized in that: The fixing frame (19) is respectively engaged and connected with the two positioning columns (15) through the positioning holes (20).

4. The cutting knife with automatically replaceable blade according to claim 1, characterized in that: A fixing groove (16) is provided at the top end of one side of the cutting blade holder (1).

5. The cutting knife with automatically replaceable blade according to claim 1, characterized in that: The positioning drive mechanism comprises a lifting block (9), a second positioning groove (8) is provided at the top end of the inner wall of the cutting knife holder (1), the outer wall of the lifting block (9) is slidably connected to one end of the inner wall of the second positioning groove (8), the bottom end of the lifting block (9) is fixedly connected to the top end of the positioning shaft (3), one end of the lifting block (9) passes through the fixing groove (16) and is fixedly provided with a sliding block (10), and an anti-sliding block (11) is fixedly provided on one side of the sliding block (10).

6. A cutting knife with automatically replaceable blade according to claim 5, characterized in that: A positioning slot (12) is provided at one end of one side of the sliding block (10), and a positioning block (13) is fixedly provided at the top end of one side of the cutting tool holder (1).

7. A cutting knife with automatically replaceable blade according to claim 6, characterized in that: The position of the positioning slot (12) corresponds to the position of the positioning block (13).

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