Rotating knife for cutting coaxial cable shielding layer

Abstract

The utility model discloses a coaxial cable shielding layer cutting rotary knife, which comprises a first knife rest, a second knife rest, a blade, an adjusting mechanism and a cutting tension adjusting mechanism, the cutting edge of the blade corresponds to the second knife rest, and the cutting tension adjusting mechanism is parallel to the blade; the side, close to the first knife rest, of the second knife rest is provided with a groove corresponding to the blade and a V-shaped wire stripping groove corresponding to the width direction of the blade. The cutting depth of the blade can be quickly adjusted through the adjusting mechanism, the operation is convenient, and the cutting tension adjusting mechanism is used for adjusting the cutting pressure of a coaxial cable shielding layer to be cut; the first knife rest and the second knife rest are stable in structure and high in strength and have certain abrasion resistance, the cutting depth of the blade can be conveniently adjusted through the adjusting mechanism according to different coaxial cable shielding layer thicknesses, and therefore the cutting depth of the blade can be continuously adjusted in the cutting process.

Description

Technical Field

[0001] The utility model relates to the technical field of tool knives for cutting cables, in particular to a rotary knife for cutting a shielding layer of a coaxial cable. Background Art

[0002] Cables are necessary equipment for power supply. They play a very important role in the power supply process. However, in daily production and household electricity use, cables often break and get damaged. If they break, they will cause power outages. Therefore, cables need to be repaired when necessary.

[0003] When a coaxial cable breaks, the coaxial cable sheath is usually peeled off manually using scissors or other tools, and then the staff manually opens the shielding layer, cuts off the tin foil layer and peels off the foam before wiring. However, manual operation can easily injure the staff's hands, and the shielding layer and the internal copper core can be easily damaged during this operation, causing damage to the copper core.

[0004] There is a tube stripper on the market, which is mainly used for horizontal and vertical cutting of optical fiber loose tubes. However, the tube stripper has the following disadvantages:

[0005] (1) The overall tool holder of the tube stripper is made of plastic and cannot be used directly to cut the shielding layer of the coaxial cable;

[0006] (2) The cutting tension of the tube stripper cannot be adjusted;

[0007] (3) Although the blade depth is adjustable, the adjustment accuracy is low and the operation is relatively troublesome;

[0008] (4) The end face cutting length cannot be effectively positioned.

[0009] In view of the above technical shortcomings, it is necessary to design a cutting tool with high tool holder strength, sharp blade, high durability, freely adjustable tension, blade cutting depth, end face cutting length, etc., and also capable of cutting the shielding layer of coaxial cable. Utility Model Content

[0010] The utility model aims to provide a rotary knife for cutting the shielding layer of a coaxial cable, so as to solve the problems that the cutting tension of the existing cable stripper cannot be adjusted, the blade depth adjustment precision is low and the operation is complicated.

[0011] The technical solution of the utility model to solve the above technical problems is as follows:

[0012] A rotary knife for cutting a coaxial cable shielding layer, comprising: a first knife holder, a second knife holder opposite to and rotatably matched with the first knife holder, a blade mounted on the front end of the first knife holder, an adjustment mechanism arranged at the front end of the first knife holder and used to adjust the distance of the blade relative to the second knife holder, and a cutting tension adjustment mechanism connected between the front end of the first knife holder and the front end of the second knife holder and located below the blade, wherein the blade edge corresponds to the second knife holder, and the cutting tension adjustment mechanism is parallel to the blade;

[0013] A groove corresponding to the blade and a V-shaped wire stripping groove corresponding to the width direction of the blade are respectively formed on one side of the second blade holder close to the first blade holder.

[0014] When the utility model is used, the rotary knife for cutting the shielding layer of the coaxial cable is placed in the V-shaped stripping groove, and the adjusting mechanism is driven to adjust the position of the blade relative to the second knife holder according to the thickness of the shielding layer of the cable to be cut, so as to adjust the cutting depth of the blade. The cutting tension adjusting mechanism is used to adjust the tension between the first knife holder and the second knife holder, so as to adjust the cutting pressure of the shielding layer of the coaxial cable to be cut. The shielding layer of the cable can be cut by the blade, and the cutting depth of the blade can be quickly adjusted by the adjusting mechanism, and the operation is simple. The first knife holder and the second knife holder have stable structures, high strength, and certain wear resistance. According to the thickness of the shielding layer of the coaxial cable, the cutting depth of the blade can be conveniently adjusted by the adjusting mechanism, so as to realize the continuous adjustment of the cutting depth of the blade during the cutting process.

[0015] Furthermore, a through slot and a mounting slot are sequentially spaced apart at the front end of the first tool holder in the direction of the second tool holder, the mounting slot is located on a side close to the second tool holder, and the blade is mounted in the mounting slot;

[0016] The adjustment mechanism includes a screw rod and a depth adjustment nut. One end of the screw rod is connected to the blade, and the other end of the screw rod passes through the through slot and extends out of the first tool holder. The depth adjustment nut is installed in the through slot and cooperates with the screw rod thread.

[0017] Furthermore, a notch for installing a blade is provided on the screw rod, a plane formed by the notch is flush with the bottom wall of the installation groove, and a limiting sliding groove for limiting the moving position of the screw rod is provided on the bottom wall of the installation groove.

[0018] Furthermore, a locking screw for locking the blade is provided on the first tool holder.

[0019] Furthermore, the above-mentioned cutting tension adjustment mechanism includes a tension screw and a spring which are axially connected in sequence, the tension screw and the spring are parallel to the blade, the end of the tension screw extends to the outside of the first tool holder, the tension screw located on the outside is threadedly connected to a tension adjustment nut which contacts the outer wall of the first tool holder, and the end of the spring is limited on the second tool holder by the spring shaft.

[0020] Furthermore, the opposite side walls of the first tool holder and the second tool holder are respectively provided with installation grooves for installing springs, and the second tool holder is provided with a limiting hole corresponding to and connected to the installation groove of the second tool holder, the spring shaft is installed in the limiting hole, and the end of the spring extends into the limiting hole and is connected to the spring shaft.

[0021] Furthermore, a sliding hole matching the tension screw rod and communicating with the mounting groove of the first tool holder is provided on the first tool holder, and the end of the tension screw rod passes through the sliding hole and extends to the outside of the first tool holder.

[0022] Furthermore, a U-shaped block is provided on the side of the front end of the second tool holder away from the first tool holder, two transverse parts of the U-shaped block extend along the direction of the first tool holder, and the outer wall of the connecting part of the U-shaped block is provided with scales.

[0023] The utility model has the following beneficial effects:

[0024] 1. The first knife holder and the second knife holder of the utility model have high structural strength, are suitable for cutting the shielding layer of the coaxial cable, and have certain wear resistance.

[0025] 2. The rotary knife for cutting the coaxial cable shielding layer of the utility model can cut according to the thickness of the coaxial cable shielding layer. By rotating the depth adjustment nut, the depth adjustment nut drives the screw rod to move along the first knife holder, and then drives the blade to move in the installation groove, so as to realize the rapid adjustment of the cutting depth of the blade. It can also realize the continuous adjustment of the cutting depth of the blade during the cutting process, and the operation is simple and convenient.

[0026] 3. The rotary cutter for cutting the coaxial cable shielding layer of the utility model can drive the tension screw rod to move in the sliding hole by rotating the tension adjusting nut, thereby tightening or relaxing the spring and adjusting the cutting pressure of the coaxial cable shielding layer to be cut. The cutting pressure required for different RF cable shielding layer thicknesses can be continuously adjusted by screwing the tension adjusting nut, and the operation is convenient.

[0027] 4. The utility model of the rotary cutter for cutting the coaxial cable shielding layer is provided with a U-shaped block, and the cutting length of the coaxial cable shielding layer can be adjusted by the scale on the U-shaped block to ensure the consistency of the cutting length of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of a rotary cutter for cutting the shielding layer of a coaxial cable;

[0029] Figure 2 A schematic diagram of the specific structure of a rotary cutter for cutting the shielding layer of a coaxial cable;

[0030] Figure 3 It is a schematic diagram of the structure of the adjustment mechanism and the blade;

[0031] Figure 4 is a structural schematic diagram of the first tool holder;

[0032] Figure 5 is a schematic structural diagram of the second tool holder;

[0033] Figure 6 It is a structural schematic diagram of a U-shaped block.

[0034] In the figure: 1. first tool holder; 11. through slot; 12. mounting slot; 121. limiting slide slot; 2. second tool holder; 21. groove; 22. V-shaped stripping slot; 23. limiting hole; 3. blade; 4. adjustment mechanism; 41. screw rod; 411. notch; 42. depth adjustment nut; 5. cutting tension adjustment mechanism; 51. tension screw rod; 52. spring; 53. tension adjustment nut; 54. spring shaft; 6. mounting groove; 7. U-shaped block; 71. transverse part; 72. connecting part. DETAILED DESCRIPTION

[0035] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0036] like Figures 1 to 5As shown, in an embodiment of the utility model, a rotary knife for cutting a coaxial cable shielding layer is provided, comprising: a first knife holder 1, a second knife holder 2 which is opposite to and rotatably matched with the first knife holder 1, a connecting seat is respectively arranged at the middle of the first knife holder 1 and the middle of the second knife holder 2, the connecting seat on the first knife holder 1 and the connecting seat on the second knife holder 2 are rotatably matched through a pin shaft or a hinge, the structures of the first knife holder 1 and the second knife holder 2 are stable and have high strength, and have certain wear resistance; further comprising a blade 3 installed at the front end of the first knife holder 1, the blade 3 is used for cutting the cable shielding layer, wherein one end of the first knife holder 1 and the second knife holder 2 for cutting is a front end, and the other end is a handheld end; the blade 3 is arranged at the first The front end of the knife holder 1 is used to adjust the distance between the blade 3 and the second knife holder 2. The adjustment mechanism 4 is used to adjust the distance between the blade 3 and the second knife holder 2, and the blade of the blade 3 corresponds to the second knife holder 2, so as to adjust the cutting depth of the blade 3; and a cutting tension adjustment mechanism 5 connected between the front end of the first knife holder 1 and the front end of the second knife holder 2 and located below the blade 3, and the cutting tension adjustment mechanism 5 is parallel to the blade 3; the cutting tension adjustment mechanism 5 is used to adjust the tension between the first knife holder 1 and the second knife holder 2, so as to adjust the cutting pressure of the shielding layer of the coaxial cable to be cut, and the shielding layer of the cable can be cut by the blade 3. The second knife holder 2 is provided with a groove 21 corresponding to the blade 3 and a V-shaped stripping groove 22 corresponding to the width direction of the blade 3 on one side close to the first knife holder 1. The inner diameter of the groove 21 matches the thickness of the blade 3. The V-shaped stripping groove 22 is convenient for placing the cable to be cut and cutting it by the blade 3.

[0037] like Figures 2 to 4As shown, a through slot 11 and a mounting slot 12 are sequentially spaced apart at the front end of the first tool holder 1 along the direction of the second tool holder 2, the mounting slot 12 is located on a side close to the second tool holder 2, the blade 3 is mounted in the mounting slot 12, the width of the mounting slot 12 matches the width of the blade 3, the length of the mounting slot 12 is greater than the length of the blade 3, and the side of the mounting slot 12 close to the second tool holder 2 is connected to the outside; the adjustment mechanism 4 includes a screw rod 41 and a depth adjustment nut 42, one end of the screw rod 41 is connected to the blade 3, and the other end of the screw rod 41 passes through the through slot 11 and extends out On the outside of the first tool holder 1, a first through hole connected to the through slot 11 is provided on the side wall of the installation slot 12 close to the through slot 11, and a second through hole corresponding to the first through hole is provided on the side wall of the first tool holder 1 away from the second tool holder 2. The apertures of the two through holes match the outer diameter of the screw rod 41, so that the screw rod 41 can pass through easily. The depth adjustment nut 42 is installed in the through slot 11 and is threadedly matched with the screw rod 41. The size of the through slot 11 is larger than the size of the depth adjustment nut 42. The outer wall of the screw rod 41 located in the through slot 11 is provided with an outer thread threadedly matched with the depth adjustment nut 42. By screwing the depth adjustment nut 42, the screw rod 41 can be driven to move along the first tool holder 1, thereby driving the blade 3 to move in the installation slot 12, and adjusting the distance of the blade 3 relative to the second tool holder 2, so as to adjust the cutting depth of the blade 3, and the cutting depth of the blade 3 can be continuously adjusted during the cutting process. Furthermore, in this embodiment, a notch 411 for installing the blade 3 is provided on the screw rod 41, and the blade 3 is fixed to the screw rod 41 by screws. The plane formed by the notch 411 is flush with the bottom wall of the mounting groove 12, and the bottom wall of the mounting groove 12 is provided with a limiting slide groove 121 for limiting the moving position of the screw rod 41. The limiting slide groove 121 is connected with the first through hole on the side wall of the mounting groove 12, so when the depth adjustment nut 42 is screwed, the screw rod 41 can be driven to move along the first tool holder 1, and the screw rod 41 slides along the through hole and the limiting slide groove 121 on the bottom wall of the mounting groove 12 at the same time. The limiting slide groove 121 is used to limit the moving distance of the screw rod 41, thereby preventing the blade 3 from cutting too deep when cutting the shielding layer of the cable. At the same time, a locking screw (not shown) for locking the blade 3 is provided on the first tool holder 1. In the present embodiment, the locking screw is provided on the side wall of the first tool holder 1 opposite to the mounting groove 12. A threaded hole is provided on the side wall of the first tool holder 1 opposite to the mounting groove 12. The locking screw passes through the threaded hole and is connected to the blade 3 to lock the blade 3 and prevent the blade 3 from moving due to the influence of the adjustment mechanism 4 when the rotary cutter is used. When the cutting depth of the blade 3 needs to be readjusted, the locking screw is loosened, and the cutting depth of the blade 3 can be adjusted by screwing the depth adjustment nut 42.

[0038] like Figure 1 and Figure 2As shown, the cutting tension adjustment mechanism 5 includes a tension screw rod 51 and a spring 52 which are axially connected in sequence. The diameter of the tension screw rod 51 is equal to the diameter of the spring 52. The spring 52 is a tension spring. The tension screw rod 51 and the spring 52 are both parallel to the blade 3. The end of the tension screw rod 51 extends to the outside of the first tool holder 1. The tension screw rod 51 located on the outside is threadedly connected to a tension adjustment nut 53 which contacts the outer wall of the first tool holder 1. The end of the spring 52 is limited on the second tool holder 2 by a spring shaft 54. Among them, the opposite side walls of the first tool holder 1 and the second tool holder 2 are respectively provided with mounting grooves 6 for installing the spring 52, and the first tool holder 1 is provided with a sliding hole that matches the tension screw rod 51 and is connected to the mounting groove 6 of the first tool holder 1. The end of the tension screw rod 51 passes through the sliding hole and extends to the outside of the first tool holder 1. The sliding hole matches the rod diameter of the tension screw rod 51, and the end of the tension screw rod 51 away from the spring 52 passes through the sliding hole and extends to the outside of the first tool holder 1, and the outer wall of the tension screw rod 51 located outside is provided with an external thread that matches the thread of the tension adjustment nut 53. Therefore, when the tension adjustment nut 53 is rotated, the tension screw rod 51 can be driven to move outward along the shaft hole, thereby stretching the spring 52. Reverse rotation of the tension adjustment nut 53 resets the spring 52, thereby adjusting the preload force of the spring 52. The second tool holder 2 is provided with a limiting hole 23 corresponding to and connected to the mounting groove 6 of the second tool holder 2. The size of the limiting hole 23 is smaller than the size of the mounting groove 6 on the second tool holder 2. The spring shaft 54 ​​is installed in the limiting hole 23. The end of the spring 52 extends into the limiting hole 23 and is connected to the spring shaft 54, so that the position of the spring 52 on the second tool holder 2 can be limited. Such an arrangement facilitates the installation and disassembly of the cutting tension adjustment mechanism 5.

[0039] like Figure 6 As shown, a U-shaped block 7 is provided at the front end of the second tool holder 2 on the side away from the first tool holder 1. The U-shaped block 7 is connected and fixed to the second tool holder 2 by bolts. Both transverse parts 71 of the U-shaped block 7 extend in the direction of the first tool holder 1, and the outer wall of the connecting part 72 of the U-shaped block 7 is provided with a scale. When cutting the shielding layer of the coaxial cable, its length can be cut according to the scale, thereby ensuring the consistency of the cutting length of the coaxial cable. In this embodiment, both transverse parts 71 of the U-shaped block 7 extend in the direction of the first tool holder 1, and a V-shaped notch is provided on one transverse part 71 of the U-shaped block 7, and the V-shaped notch corresponds to the V-shaped stripping groove 22, and the other transverse part 71 corresponds to the V-shaped stripping groove 22. Such a configuration facilitates the adjustment of the cutting length of the shielding layer of the coaxial cable.

[0040] When the rotary cutter for cutting the shielding layer of a coaxial cable of the utility model is in use, the cable to be cut is placed in the V-shaped stripping groove 22, and according to the thickness of the shielding layer of the cable to be cut, the depth adjustment nut 42 is screwed and the position of the blade 3 relative to the second knife holder 2 is adjusted to achieve the purpose of adjusting the cutting depth of the blade 3, and the tension adjustment nut 53 can be screwed to adjust the tension between the first knife holder 1 and the second knife holder 2, so as to adjust the cutting pressure of the shielding layer of the coaxial cable to be cut. The operation is simple and convenient, and according to different thicknesses of the shielding layer of the coaxial cable, the cutting depth of the blade 3 can be conveniently adjusted through the adjustment mechanism 4, so as to realize continuous adjustment of the cutting depth of the blade 3 during the cutting process.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary knife for cutting the shielding layer of a coaxial cable, characterized in that: include: A first knife holder (1), a second knife holder (2) opposite to and rotatably matched with the first knife holder (1), a blade (3) mounted on the front end of the first knife holder (1), an adjustment mechanism (4) arranged at the front end of the first knife holder (1) and used to adjust the distance of the blade (3) relative to the second knife holder (2), and a cutting tension adjustment mechanism (5) connected between the front ends of the first knife holder (1) and the second knife holder (2) and located below the blade (3), the blade edge of the blade (3) corresponding to the second knife holder (2), and the cutting tension adjustment mechanism (5) being parallel to the blade (3); A groove (21) corresponding to the blade (3) and a V-shaped wire stripping groove (22) corresponding to the width direction of the blade (3) are respectively provided on a side of the second blade holder (2) close to the first blade holder (1).

2. The rotary knife for cutting the coaxial cable shielding layer according to claim 1, characterized in that: A through slot (11) and a mounting slot (12) are sequentially spaced apart at the front end of the first blade holder (1) along the direction of the second blade holder (2); the mounting slot (12) is located on a side close to the second blade holder (2), and the blade (3) is mounted in the mounting slot (12); The adjustment mechanism (4) comprises a screw rod (41) and a depth adjustment nut (42); one end of the screw rod (41) is connected to the blade (3); the other end of the screw rod (41) passes through the through slot (11) and extends out of the first tool holder (1); the depth adjustment nut (42) is installed in the through slot (11) and is threadedly matched with the screw rod (41).

3. The rotary knife for cutting the coaxial cable shielding layer according to claim 2, characterized in that: The screw rod (41) is provided with a notch (411) for installing the blade (3), the plane formed by the notch (411) is flush with the bottom wall of the installation groove (12), and the bottom wall of the installation groove (12) is provided with a limiting sliding groove (121) for limiting the moving position of the screw rod (41).

4. The rotary knife for cutting the coaxial cable shielding layer according to claim 2, characterized in that: The first blade holder (1) is provided with a locking screw for locking the blade (3).

5. The rotary knife for cutting the coaxial cable shielding layer according to any one of claims 1 to 4, characterized in that: The cutting tension adjustment mechanism (5) comprises a tension screw rod (51) and a spring (52) which are axially connected in sequence, the tension screw rod (51) and the spring (52) are both parallel to the blade (3), the end of the tension screw rod (51) extends to the outside of the first tool holder (1), the tension screw rod (51) located outside is threadedly connected to a tension adjustment nut (53) which contacts the outer wall of the first tool holder (1), and the end of the spring (52) is limited on the second tool holder (2) by a spring shaft (54).

6. The rotary knife for cutting the coaxial cable shielding layer according to claim 5, characterized in that: The opposite side walls of the first tool holder (1) and the second tool holder (2) are respectively provided with mounting grooves (6) for mounting the spring (52); the second tool holder (2) is provided with a limiting hole (23) corresponding to and connected with the mounting groove (6) of the second tool holder (2); the spring shaft (54) is installed in the limiting hole (23); the end of the spring (52) extends into the limiting hole (23) and is connected to the spring shaft (54).

7. The rotary knife for cutting the coaxial cable shielding layer according to claim 6, characterized in that: The first tool holder (1) is provided with a sliding hole which matches the tension screw rod (51) and is connected to the mounting groove (6) of the first tool holder (1); the end of the tension screw rod (51) passes through the sliding hole and extends to the outside of the first tool holder (1).

8. The rotary knife for cutting the coaxial cable shielding layer according to claim 1, characterized in that: A U-shaped block (7) is provided at a side of the front end of the second tool holder (2) away from the first tool holder (1); both transverse portions (71) of the U-shaped block (7) extend in the direction of the first tool holder (1); and a scale is provided on the outer wall of the connecting portion (72) of the U-shaped block (7).

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