A knife sheath fixing device convenient to install and dismount

Abstract

The application discloses a cutter sleeve fixing device which is convenient to install and disassemble. The cutter sleeve fixing device comprises an outer cylinder, an inner cylinder arranged in the outer cylinder, a fixing sleeve connected between the outer cylinder and the inner cylinder, a top rod mechanism connected with the fixing sleeve, and an outer pressing sleeve connected with the outer cylinder. The fixing sleeve is arranged at one end of the outer cylinder. The end of the outer cylinder is provided with a clamping groove. The outer side of the fixing sleeve is provided with a fixing protrusion which can be inserted into the clamping groove. The inner part of the outer pressing sleeve is hollow and is arranged outside the fixing sleeve. The end of the outer pressing sleeve is provided with a blocking ring which can block the fixing protrusion. The blocking ring is provided with a disassembly gap through which the fixing protrusion can pass. The application can be conveniently installed and disassembled, the installation and disassembly time is reduced, no cutter cap indentation is generated, and the problem of scratching the plate and the like is avoided.

Description

Technical Field

[0001] This invention relates to the field of film cutting equipment technology, and in particular to a blade sleeve fixing device that is easy to install and disassemble. Background Technology

[0002] Film slicing equipment is typically used to cut the film or protective film on the surface of sheet materials for easy removal. Film slicing equipment usually has blades to cut the material. To fix the blades, some specialized equipment uses a blade sheath device. To control the movement of the blade sheath device, a blade sheath fixing device is needed to secure it to the moving device. The blade sheath fixing device typically includes an outer cylinder, an inner cylinder, a push rod mechanism, and a fixing sleeve. The outer cylinder connects to the moving device, the inner cylinder connects to the blade sheath device, the push rod mechanism connects and fixes the blade sheath device, and the fixing sleeve connects the outer cylinder and the inner cylinder. Existing fixing sleeves typically embed the inner cylinder into its inner hole, and the threads on the inner wall connect with the threads on the outer wall of the outer cylinder. This ensures both the connection between the inner and outer cylinders and maintains their coaxiality. The push rod mechanism is connected to the fixing sleeve. However, this connection method makes the installation and disassembly of the push rod mechanism more troublesome. During installation / disassembly, the threads of the fixing sleeve need to be fully screwed in / out in order to bring out the push rod mechanism and complete the installation / disassembly. The process is more complicated and takes more time. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a tool holder fixing device that is easy to install and disassemble, thereby reducing the time required for installation and disassembly.

[0004] To solve the above-mentioned technical problems, the present invention provides a tool holder fixing device that is easy to install and disassemble, for fixing a tool holder device, including an outer cylinder, an inner cylinder disposed inside the outer cylinder, a fixing sleeve connecting the outer cylinder and the inner cylinder, a push rod mechanism connected to the fixing sleeve, and an outer pressure sleeve connected to the outer cylinder, wherein the tool holder device is disposed inside the outer cylinder and connected to the push rod mechanism.

[0005] The fixing sleeve is fitted onto one end of the outer cylinder, the end of the outer cylinder is provided with a locking groove, and the outer side of the fixing sleeve is provided with a fixing protrusion, which can be inserted into the locking groove;

[0006] The outer wall of one end of the outer cylinder is provided with a first thread, and the inner wall of the outer pressure sleeve is provided with a second thread. The first thread and the second thread can mesh with each other. The outer pressure sleeve is hollow inside and is fitted outside the fixed sleeve. The end of the outer pressure sleeve is provided with a retaining ring. The retaining ring protrudes towards the inside of the outer pressure sleeve and can block the fixed protrusion. The retaining ring is provided with a disassembly notch, and the fixed protrusion can pass through the disassembly notch.

[0007] As an improvement to the above solution, the slot includes a first slot and a second slot arranged opposite to each other, and the fixing protrusion includes a first protrusion and a second protrusion arranged opposite to each other, wherein the positions of the first protrusion and the second protrusion can correspond to the positions of the first slot and the second slot, respectively.

[0008] As an improvement to the above solution, the cross-sectional area of ​​the first protrusion is larger than that of the second protrusion, and the slot area of ​​the first slot is larger than that of the second slot.

[0009] As an improvement to the above solution, the inner cylinder is provided with an installation cavity that penetrates the inner side of the inner cylinder. The side of the installation cavity is provided with an abutment strip, which is arranged along the length of the inner cylinder. The bottom of the fixing sleeve is provided with an abutment end, which can be inserted into the installation cavity. One side of the abutment end is provided with an abutment surface, which can abut against the abutment strip.

[0010] As an improvement to the above solution, a fixing groove is provided on the contact surface, and the fixing groove is provided with an inclined surface that gradually narrows towards the inside of the fixing sleeve. A fixing hole is provided on the inner cylinder, and the position of the fixing hole corresponds to the position of the fixing groove.

[0011] As an improvement to the above solution, the push rod mechanism includes an outer rod and an inner rod. The outer rod passes through the mounting cavity, with its upper end being a handle and its lower end being a connecting end. The connecting end has a connecting groove, and the inner rod passes through the connecting groove. The blade sleeve device includes a blade fixing rod, which passes through the mounting cavity. The side of the blade fixing rod abuts against the abutting strip, and the upper end of the blade fixing rod can coaxially abut against the lower end of the inner rod.

[0012] As an improvement to the above solution, the push rod mechanism further includes an adjusting spring. One end of the adjusting spring is located in the inner rod near the end of the tool fixing rod, and the other end of the adjusting spring is located at the end of the connecting groove. The inner rod can move up and down relative to the outer rod.

[0013] As an improvement to the above solution, the fixing sleeve is provided with a through hole running vertically through the inside, the inner wall of the through hole is provided with a third thread, and the outer wall of the handle end is provided with a fourth thread, the third thread and the fourth thread meshing with each other.

[0014] As an improvement to the above solution, the side of the fixing sleeve is also provided with an adjustment hole, the adjustment hole is arranged along the length direction of the fixing sleeve, the side of the adjustment hole is provided with a scale, and the side of the handle end is provided with an identification pattern, the identification pattern being exposed outside the adjustment hole.

[0015] As an improvement to the above solution, the handle end has an internal movable groove coaxially arranged with the connecting groove, and the end of the inner rod away from the tool fixing rod is a movable end that can be inserted into the movable groove. The side of the handle end has a limiting hole that is arranged along the length direction of the outer rod. The push rod mechanism also includes a limiting pin, one end of which is connected to the side of the movable end, and the other end can be inserted into the limiting hole.

[0016] Implementing this invention has the following beneficial effects:

[0017] The present invention provides a conveniently installed and disassembled blade sheath fixing device comprising an outer cylinder, an inner cylinder disposed within the outer cylinder, and an outer pressure sleeve connected to the outer cylinder. One end of the outer cylinder has a locking groove, and the outer side of the fixing sleeve has a fixing protrusion. During installation, the fixing protrusion can be inserted into the locking groove to form a connection, and the push rod mechanism can be fixed to the outer cylinder via the fixing sleeve. Furthermore, a first thread is provided on the outer wall of one end of the outer cylinder, and a second thread is provided on the inner side wall of the outer pressure sleeve. The first and second threads can mesh with each other. A retaining ring is provided at the end of the outer pressure sleeve, which can block the fixing protrusion. The engagement of the first and second threads allows the outer pressure sleeve to be fixed to the outer cylinder. During disassembly, the retaining ring has a disassembly notch. Utilizing the rotatability of the outer pressure sleeve on the outer cylinder, the disassembly notch can be aligned with the position of the fixing protrusion. Since the fixing protrusion can pass through the disassembly notch, disassembly is completed simply by pulling the push rod mechanism connected to the fixing sleeve, along with the fixing sleeve, out of the disassembly notch. Conversely, by rotating the disassembly notch to the position of the locking groove, inserting the push rod mechanism along with the fixing sleeve into the locking groove, and then rotating the outer pressure sleeve at a certain angle, the fixing protrusion can be blocked, ensuring the connection between the fixing sleeve and the push rod mechanism and the outer cylinder. Therefore, this invention has the advantages of convenient installation and disassembly, and reduced installation and disassembly time. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the disassembled structure of the tool sheath fixing device of the present invention, which is convenient for installation and disassembly;

[0019] Figure 2 This is a top view schematic diagram of the knife sheath fixing device of the present invention, which is convenient for installation and disassembly;

[0020] Figure 3 This is a partial cross-sectional structural diagram of the knife sheath fixing device of the present invention, which is convenient for installation and disassembly;

[0021] Figure 4 yes Figure 3 A magnified view of part A in the image;

[0022] Figure 5 yes Figure 3 A magnified view of part B in the image;

[0023] Figure 6 This is a schematic diagram of a partial installation structure of the handle end and the fixing sleeve of the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside, and outside used in this text are based solely on the accompanying drawings and are not intended to specifically limit the invention.

[0025] See Figure 1 and Figure 2 This invention discloses a conveniently installed and disassembled blade sheath fixing device for fixing a blade sheath device 6. It includes an outer cylinder 1, an inner cylinder 2 disposed within the outer cylinder 1, a fixing sleeve 3 connecting the outer cylinder 1 and the inner cylinder 2, a push rod mechanism 4 connected to the fixing sleeve 3, and an outer pressure sleeve 5 connected to the outer cylinder 1. The blade sheath device 6 is disposed within the outer cylinder 1 and connected to the push rod mechanism 4. The outer cylinder 1 is used to connect to an external moving device, the inner cylinder 2 is used to connect the blade sheath device 6, the push rod mechanism 4 is used to connect and fix the blade sheath device 6, and the fixing sleeve 3 is used to connect the outer cylinder 1 and the inner cylinder 2.

[0026] In this embodiment of the invention, the fixing sleeve 3 is disposed at one end of the outer cylinder 1, and the end of one end of the outer cylinder 1 is provided with a locking groove 11. The outer side of the fixing sleeve 3 is provided with a fixing protrusion 31. By installing from top to bottom, the fixing protrusion 31 can be inserted into the locking groove 11 to form a connection. To ensure that the fixing protrusion 31 can be continuously engaged in the slot 11 to form a fixed connection, a first thread 12 is provided on the outer wall of one end of the outer cylinder 1, and a second thread 51 is provided on the inner side wall of the outer pressure sleeve 5. By rotation, the first thread 12 and the second thread 51 can mesh with each other. The outer pressure sleeve 5 is hollow inside and is sleeved on the outside of the fixing sleeve 3. A retaining ring 52 is provided at the end of the outer pressure sleeve 5. The retaining ring 52 protrudes towards the inside of the outer pressure sleeve 5. The retaining ring 52 can block the fixing protrusion 31, thereby making the fixing protrusion 31 continuously connected with the slot 11 to form a fixed connection. In order to facilitate installation and disassembly, a disassembly notch 521 is provided on the retaining ring 52, through which the fixing protrusion 31 can pass. During installation, the outer pressure sleeve 5 needs to be rotated so that the disassembly notch 521 aligns with the locking groove 11. The fixing sleeve 3, along with the push rod mechanism 4, is inserted into the inner cylinder 2, and the fixing protrusion 31 is engaged in the locking groove 11 through the disassembly notch 521. Then, the outer pressure sleeve 5 is rotated to misalign the disassembly notch 521 with the fixing protrusion 31, preventing the fixing protrusion 31 from dislodging from the locking groove 11. This completes the installation. During disassembly, the outer pressure sleeve 5 is rotated so that the position of the disassembly notch 521 corresponds to the position of the locking groove 11. At this time, the fixing protrusion 31 can dislodge from the locking groove 11, so the push rod mechanism 4 can be pulled out along with the fixing sleeve 3, completing the disassembly.

[0027] The beneficial effects of the embodiments of the present invention are as follows:

[0028] The conveniently installed and disassembled blade sheath fixing device of this invention includes an outer cylinder 1, an inner cylinder 2 disposed within the outer cylinder 1, and an outer pressure sleeve 5 connected to the outer cylinder 1. One end of the outer cylinder 1 has a locking groove 11, and the outer side of the fixing sleeve 5 has a fixing protrusion 31. During installation, the fixing protrusion 31 can be inserted into the locking groove 11 to form a connection. The push rod mechanism 4 can be fixed to the outer cylinder 1 through the fixing sleeve 3. Furthermore, a first thread 12 is provided on the outer wall of one end of the outer cylinder 1. The inner wall of the outer pressure sleeve 5 is provided with a second thread 51. The first thread 12 and the second thread 51 can mesh with each other. The end of the outer pressure sleeve 5 is provided with a retaining ring 52. The retaining ring 52 can block the fixing protrusion 31. By using the meshing of the first thread 12 and the second thread 51, the outer pressure sleeve 5 can be fixed to the outer cylinder 1. At the same time, the retaining ring 52 can block the fixing protrusion 31 to prevent it from coming out of the locking groove 11, so as to ensure the connection between the fixing sleeve 3 and the outer cylinder 1. During disassembly, the retaining ring 52 has a disassembly notch 521. Utilizing the rotatability of the outer pressure sleeve 5 on the outer cylinder 1, the disassembly notch 521 can be aligned with the position of the fixing protrusion 31. Since the fixing protrusion 31 can pass through the disassembly notch 521, disassembly can be completed simply by pulling the push rod mechanism 4 connected to the fixing sleeve 3, along with the fixing sleeve 3, out of the disassembly notch 521. Conversely, by rotating the disassembly notch 521 to the position of the locking groove 11, inserting the push rod mechanism 4 along with the fixing sleeve 3 into the locking groove 11, and then rotating the outer pressure sleeve 5 by a certain angle, the fixing protrusion 31 can be blocked, ensuring the connection between the fixing sleeve 3 and the push rod mechanism 4 and the outer cylinder 1. Therefore, this invention has the advantages of convenient installation and disassembly, and reduced installation and disassembly time.

[0029] Specifically, see Figure 3 To balance the forces and ensure coaxiality between the fixed sleeve 3, the push rod mechanism 4, and the outer cylinder 1, the locking groove 11 includes a first locking groove 111 and a second locking groove 112 arranged opposite each other, located on symmetrical sides. The fixing protrusion 31 includes a first protrusion 311 and a second protrusion 312 arranged opposite each other, also located on symmetrical sides. The positions of the first protrusion 311 and the second protrusion 312 correspond to the positions of the first locking groove 111 and the second locking groove 112, respectively. The cooperation of the first protrusion 311 and the second protrusion 312 with the first locking groove 111 and the second locking groove 112 ensures that the fixed sleeve 3 and the outer cylinder 1 remain coaxially centered, preventing the fixed sleeve 3 and the push rod mechanism 4 from deviating from the blade sleeve device 6.

[0030] See Figure 4 The inner cylinder 2 is provided with an installation cavity 21 that penetrates the inner side of the inner cylinder 2. The side of the installation cavity 21 is provided with an abutment strip 22, which is set along the length of the inner cylinder 2. The bottom of the fixing sleeve 3 is provided with an abutment end 32, which can be inserted into the installation cavity 21. One side of the abutment end 32 is provided with an abutment surface 321. After the abutment end 32 is inserted into the installation cavity 21, the abutment surface 321 can abut against the abutment strip 22. Therefore, the fixing sleeve 3 will drive the inner cylinder 2 to rotate. The installation angle of the fixing sleeve 3 is related to the installation position of the abutment strip 22 in the inner cylinder 2. The contact surface 321 is provided with a fixing groove 322, and the fixing groove 322 has an inclined surface that gradually narrows towards the inside of the fixing sleeve 3. The inner cylinder 2 is provided with a fixing hole 23, and the position of the fixing hole 23 corresponds to the position of the fixing groove 322. Using a set screw or other fastener, the fixing hole 23 can be inserted to abut against the fixing groove 322, thereby fixing the fixing sleeve 3 to the inner cylinder 2. The gradually narrowing inclined surface of the fixing groove 322 makes it easy for fasteners to be inserted into the fixing groove 322 and also easy for fasteners to be pulled out of the fixing groove 322.

[0031] The push rod mechanism 4 includes an outer rod 41 and an inner rod 42. The outer rod 41 passes through the mounting cavity 21, and its upper end is a handle end 411. Using the handle end 411, the outer rod 41 and the fixing sleeve 3 can be installed or removed together. The lower end of the outer rod 41 is a connecting end 416, and the connecting end 416 is provided with a connecting groove 417. The inner rod 42 passes through the connecting groove 417. The blade sleeve device 6 includes a blade fixing rod 61, which passes through the mounting cavity 21. The side of the blade fixing rod 61 abuts against the abutment strip 22, and the upper end of the blade fixing rod 61 can coaxially abut against the lower end of the inner rod 42. The inner rod 42 is connected to the tool fixing rod 61 by abutting, so that the inner rod 42 can abut against the tool fixing rod 61, so that the tool fixing rod 61 can be supported when under force, thereby supporting the tool to cut, and also makes it easy to separate the inner rod 42 from the tool fixing rod 61.

[0032] Due to the presence of the abutment strip 22, the installation angles of the fixing sleeve 3 and the tool fixing rod 61 are limited. Furthermore, the angle of the tool fixing rod 61 affects the tool's orientation angle. Therefore, the installation angle of the fixing sleeve 3 is linked to the tool's orientation angle through the abutment strip 22 of the inner cylinder 2. The tool's orientation needs to be reset after each cut; that is, during installation, the initial orientation position of the tool is fixed, and the initial angle of the inner cylinder 2 is also fixed. Therefore, the fixing sleeve 3 also needs to be installed at a fixed angle. To prevent incorrect installation, the cross-sectional area of ​​the first protrusion 311 is larger than that of the second protrusion 312, and the groove area of ​​the first slot 111 is larger than that of the second slot 112. This ensures that the first protrusion 311 can only be inserted into the first slot 111, and the second protrusion 312 can only be inserted into the second slot 112, thus limiting the angle at which the fixing sleeve 3 is inserted into the outer cylinder 1, thereby enabling successful insertion into the mounting cavity 21 and improving installation efficiency.

[0033] The push rod mechanism 4 also includes an adjusting spring 43. One end of the adjusting spring 43 is located in the inner rod 42 near the tool fixing rod 61, and the other end of the adjusting spring 43 is located at the end of the connecting groove 417. The inner rod 42 can move up and down relative to the outer rod 41. When the tool abuts against the protective film, the reaction force generated on the tool by the working platform causes the inner rod 42 to move upward relative to the outer rod 41. The adjusting spring 43 is compressed, thereby generating a large clamping force so that the tool can cut into the protective film. At the same time, the adjusting spring 43 can ensure that the tool continues to abut against the protective film for cutting.

[0034] The fixed sleeve 3 has a through hole 33 running vertically through it. The inner wall of the through hole 33 has a third thread 331, and the outer wall of the handle end 411 has a fourth thread 412. The third thread 331 and the fourth thread 412 mesh with each other. The handle end 411 is connected to the fixed sleeve 3 through the meshing of the third thread 331 and the fourth thread 412, so that the fixed sleeve 3 can be taken out by pulling out the handle end 411.

[0035] See Figure 6In order to improve the applicability of the blade sheath device 6 and enable the blade to adjust the protrusion length when cutting protective films of different materials and thicknesses, so as to avoid blade cap indentation and avoid scratching the plate, the side of the fixing sleeve 3 is also provided with an adjustment hole 34. The adjustment hole 34 is set along the length direction of the fixing sleeve 3. The side of the adjustment hole 34 is provided with a scale 341. The side of the handle end 411 is provided with a marking pattern 413, which can be exposed outside the adjustment hole 34. The handle end 411 is rotatable relative to the fixed sleeve 3. Utilizing the meshing relationship between the third thread 331 and the fourth thread 412, the outer rod 41 can be displaced upwards or downwards relative to the inner rod 42. When upward displacement occurs, the adjusting spring 43 located between the outer rod 41 and the inner rod 42 extends, reducing the thrust of the adjusting spring 43 on the tool fixing rod 61. This reduces the cutting depth of the tool on the protective film, preventing scratches on the material. Simultaneously, the pressure of the blade cap on the protective film also decreases, allowing adjustment to a level that avoids blade cap indentations. The scale 341 and the marking 413 facilitate worker observation and recording of the adjustment depth, thus enabling convenient adjustment.

[0036] See Figure 5 The handle end 411 has a movable groove 414 coaxially arranged with the connecting groove 417. The end of the inner rod 42 away from the tool fixing rod 61 is a movable end 421, which can be inserted into the movable groove 414. The movable groove 414 can ensure that the outer rod 41 and the inner rod 42 maintain a coaxial movable connection. The side of the handle end 411 has a limiting hole 415, which is arranged along the length direction of the outer rod 41. The push rod mechanism 4 also includes a limiting pin 44, one end of which is connected to the side of the movable end 421, and the other end can be inserted into the limiting hole 415. During adjustment, the outer rod 41 will drive the limiting hole 415 to move up and down. The limitation between the limiting pin 44 and the limiting hole 415 can provide linkage for the outer rod 41. When the outer rod 41 rotates, it will drive the inner rod 42 to rotate at the same time. The adjusting spring 43 between the outer rod 41 and the inner rod 42 will rotate together, thereby avoiding relative rotational displacement between the outer rod 41 and the inner rod 42, and reducing the resistance when the outer rod 41 rotates.

[0037] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A sheath fixing device for fixing a sheath device, which is convenient to mount and dismount, characterized in that, It includes an outer cylinder, an inner cylinder disposed within the outer cylinder, a fixed sleeve connecting the outer cylinder and the inner cylinder, a push rod mechanism connected to the fixed sleeve, and an outer pressure sleeve connected to the outer cylinder. The blade sleeve device is disposed within the outer cylinder and connected to the push rod mechanism. The fixing sleeve is fitted onto one end of the outer cylinder, the end of the outer cylinder is provided with a locking groove, and the outer side of the fixing sleeve is provided with a fixing protrusion, which can be inserted into the locking groove; The outer wall of one end of the outer cylinder is provided with a first thread, and the inner wall of the outer pressure sleeve is provided with a second thread. The first thread and the second thread can mesh with each other. The outer pressure sleeve is hollow inside and is fitted outside the fixed sleeve. The end of the outer pressure sleeve is provided with a retaining ring. The retaining ring protrudes towards the inside of the outer pressure sleeve and can block the fixed protrusion. The retaining ring is provided with a disassembly notch, and the fixed protrusion can pass through the disassembly notch.

2. The conveniently installed and disassembled blade sheath fixing device according to claim 1, characterized in that, The slot includes a first slot and a second slot arranged opposite to each other, and the fixing protrusion includes a first protrusion and a second protrusion arranged opposite to each other. The positions of the first protrusion and the second protrusion can correspond to the positions of the first slot and the second slot, respectively.

3. The conveniently installed and disassembled blade sheath fixing device according to claim 2, characterized in that, The cross-sectional area of ​​the first protrusion is greater than that of the second protrusion, and the slot area of ​​the first slot is greater than that of the second slot.

4. The conveniently installed and disassembled blade sheath fixing device according to claim 1, characterized in that, The inner cylinder has an installation cavity that extends through the inner side of the inner cylinder. The side of the installation cavity has an abutment strip that extends along the length of the inner cylinder. The bottom of the fixing sleeve has an abutment end that can be inserted into the installation cavity. One side of the abutment end has an abutment surface that can abut against the abutment strip.

5. The conveniently installable and removable tool sheath fixing device according to claim 4, characterized in that, The contact surface is provided with a fixing groove, and the fixing groove is provided with an inclined surface that gradually narrows towards the inside of the fixing sleeve. The inner cylinder is provided with a fixing hole, and the position of the fixing hole corresponds to the position of the fixing groove.

6. The conveniently installed and disassembled blade sheath fixing device according to claim 4, characterized in that, The push rod mechanism includes an outer rod and an inner rod. The outer rod passes through the mounting cavity. The upper end of the outer rod is a handle end, and the lower end of the outer rod is a connecting end. The connecting end has a connecting groove, and the inner rod passes through the connecting groove. The blade sleeve device includes a blade fixing rod, which passes through the mounting cavity. The side of the blade fixing rod abuts against the abutting strip, and the upper end of the blade fixing rod can coaxially abut against the lower end of the inner rod.

7. The conveniently installed and disassembled tool sheath fixing device according to claim 6, characterized in that, The push rod mechanism also includes an adjusting spring, one end of which is located in the inner rod near the tool fixing rod, and the other end of which is located at the end of the connecting groove. The inner rod can move up and down relative to the outer rod.

8. The conveniently installable and removable tool sheath fixing device according to claim 6, characterized in that, The fixing sleeve has a through hole running vertically through it. The inner wall of the through hole has a third thread, and the outer wall of the handle end has a fourth thread. The third thread and the fourth thread mesh with each other.

9. The conveniently installable and removable tool sheath fixing device according to claim 8, characterized in that, The side of the fixing sleeve is also provided with an adjustment hole, which is set along the length of the fixing sleeve. The side of the adjustment hole is provided with a scale, and the side of the handle end is provided with an identification pattern, which can be exposed outside the adjustment hole.

10. The conveniently installed and disassembled blade sheath fixing device according to claim 6, characterized in that, The handle end has an internal movable groove coaxially arranged with the connecting groove. The end of the inner rod away from the tool fixing rod is a movable end, which can be inserted into the movable groove. The side of the handle end has a limiting hole, which is arranged along the length direction of the outer rod. The push rod mechanism also includes a limiting pin, one end of which is connected to the side of the movable end, and the other end can be inserted into the limiting hole.

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