Method for cutting a metal-aluminum sheathed hand-held

Abstract

The application provides a handheld cutting method for metal aluminum sheath, which comprises a main body and a cutter holder. The main body is provided with a positioning station, and the positioning station is provided with a plurality of rows of guide wheel sets. The cutter holder is movably connected with the main body and is provided with a cutting assembly, and the cutting assembly comprises a cutting blade and a limiting piece. The cutting method is as follows: the metal aluminum sheath is positioned on the positioning station and is attached to the guide wheel sets; the cutter holder is controlled to move towards the positioning station, and when the cutting assembly touches the metal aluminum sheath, the limiting piece is used to limit the cutting depth of the cutting blade; the main body is held and rotated along the metal aluminum sheath for one round to realize the cutting of the corrugated metal aluminum sheath; and the guide wheel sets are in contact with the metal aluminum sheath during the cutting. The cutting method can quickly and efficiently cut metal aluminum sheaths of different specifications and sizes, can effectively control the appropriate cutting depth, can ensure the connection of the head and tail of the cut, can keep the cutting section in a uniform horizontal plane, and can thus ensure the electrical performance of the cable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable construction, more particularly to a handheld cutting method for metal aluminum sheath. BACKGROUND

[0002] The metal sheath is an essential part of the high-voltage cable structure, and the corrugated aluminum sheath is widely used due to its excellent properties. Power construction often requires splicing of 110kV cable joints, and 110kV cables are particularly important in power transmission, which makes the construction operation process of the cable strict and difficult.

[0003] The cable splicing joint is made by sequentially removing the outer protective skin, the metal aluminum sheath, and the water-blocking layer. The removal of the metal aluminum sheath is difficult. In the actual cable splicing joint manufacturing process, due to factors such as differences in technical level of accessory manufacturing personnel, space limitations of accessory manufacturing environment, and influence of aluminum sheath corrugation, accessory manufacturing personnel currently rely on experience to use a ring saw, which often takes a long time and is cumbersome to use a hand saw. Moreover, the construction situation cannot meet the process standards, which can easily cause the following effects:

[0004] 1. In the operation step of sawing a groove around the metal aluminum sheath, if the cutting depth is too deep, the metal aluminum sheath can be cut through, damaging the internal insulation coating of the cable and affecting the electrical performance of the cable.

[0005] 2. If the cutting depth is too shallow, it will affect the subsequent process of separating the metal aluminum sheath of the cable.

[0006] 3. When the metal aluminum sheath is cut around, due to the influence of the corrugation of the metal aluminum sheath, the cutting cannot maintain a uniform horizontal plane, making the cutting section uneven, often in an inclined shape, which can affect the positioning of the installation size of the cable accessory in the next step. SUMMARY

[0007] The present application aims to overcome the shortcomings and deficiencies in the prior art and provide a handheld cutting method for metal aluminum sheath. The cutting method can quickly and efficiently cut metal aluminum sheaths of different specifications and sizes. It can effectively control the appropriate cutting depth to solve the problem of not being able to easily control the cutting depth in traditional cutting methods. It can also ensure the connection of the cutting head and tail and maintain a uniform horizontal plane of the cutting section, thereby ensuring the electrical performance of the cable.

[0008] To achieve the above-mentioned purpose, the present application realizes the technical scheme as follows: a handheld cutting method for metal aluminum sheath, characterized by: a main body for positioning the metal aluminum sheath and a tool holder for cutting the metal aluminum sheath are provided, the main body is provided with a positioning station, the positioning station is provided with a plurality of rows of guide wheels; the tool holder is movably connected with the main body and is provided with a cutting assembly, the cutting assembly includes a cutting blade and a limiting piece;

[0009] The cutting method comprises the steps of cutting the metal aluminum sheath:

[0010] The metal aluminum sheath is positioned at the positioning station and matched with the guide wheel group; the cutter holder is controlled to move towards the positioning station, and when the cutting assembly touches the metal aluminum sheath, the cutting depth of the cutting blade is limited by the limiting of the limiting piece; the hand-held main body is rotated along the metal aluminum sheath to cut one round, so that the corrugated metal aluminum sheath is cut; during the cutting, the guide wheel group touches the metal aluminum sheath.

[0011] In the above scheme, the cutting method of the present application has strong versatility, and the position of the cutter holder can be adjusted according to the positioning of the metal aluminum sheath with different outer diameters to cut the metal aluminum sheaths with different specifications and sizes. In addition, the cutting depth of the cutting blade is limited by the limiting of the limiting piece, which can effectively control the appropriate cutting depth to solve the problem that the cutting depth is not easy to control in the traditional cutting method. During the cutting process, the guide wheel group can provide a guiding force during cutting, and can also reduce the shaking amount of the metal aluminum sheath during cutting, thereby improving the stability of the cutting positioning. In this way, the head and tail of the cut can be connected, and the cutting section can maintain a uniform horizontal plane, thereby ensuring the electrical performance of the cable.

[0012] During the cutting process, the position of the cutter holder on the main body is continuously adjusted, and the cutting depth of the cutting blade is limited by the limiting of the limiting piece each time the cutter holder moves. Since the metal aluminum sheath is a corrugated pipe structure, it has peaks and valleys, so the cutting depth needs to be continuously adjusted during the cutting process to prevent cutting through and damaging the internal insulating coating of the cable.

[0013] The cutting blade and the limiting piece are coaxially installed on the cutter holder, the cutting blade protrudes from the limiting piece, and the limiting piece is located on the side of the cutting blade. When the limiting piece touches the metal aluminum sheath, the position and cutting depth of the cutting blade can be determined, and the limiting piece is limited to achieve the effect of controlling the cutting depth.

[0014] The outer edge of the limiting piece is provided with a step structure for abutting against the metal aluminum sheath. The step structure can match and touch the metal aluminum sheath to achieve better limiting effect.

[0015] The control of the cutter holder to move towards the positioning station refers to: setting an infeed mechanism, the infeed mechanism comprising a hand wheel, an infeed screw, a button, a locking spring and a mounting shaft, the infeed screw being arranged in the cutter holder and extending out of the cutter holder and connected with the hand wheel, the button being rotatably connected with the main body through the mounting shaft, the button being provided with a threaded portion for threadedly connecting with the infeed screw; one end of the locking spring is connected with one end of the button, and the other end is connected with the main body;

[0016] The rotary hand wheel is used to control the rotation of the lead screw, and the lead screw is threadedly connected with the button; under the action of the locking spring, the button is always threadedly connected with the lead screw, so that when the hand wheel rotates, the lead screw drives the tool holder to move to the positioning station.

[0017] The button of the present application is threadedly connected with the lead screw through the threaded part, so that the linear motion of the lead screw can be converted into the rotary motion of the hand wheel, thereby moving the tool holder to the positioning station.

[0018] The cutting method further comprises the step of discharging the cut metal aluminum sheath.

[0019] The tool retracting spring is arranged, one end of the tool retracting spring is connected with the main body, and the other end is connected with the tool holder.

[0020] The hand wheel is reversely rotated, the button is pressed to compress the locking spring after the pressure of the tool holder on the metal aluminum sheath is removed, the threaded part of the button is loosened from the threaded part of the lead screw, and under the resetting tension of the tool retracting spring, the tool holder moves to the reverse direction of the positioning station, thereby achieving tool retracting and discharging the metal aluminum sheath.

[0021] The positioning station of the main body is composed of a plurality of curved arc segments.

[0022] The curvature of the curved arc segments from top to bottom gradually increases.

[0023] The design of the positioning station with curved arc segments of different curvatures is considered for the outer diameter of the metal aluminum sheath with different cross sections, and the curvature changes from small to large, small curvature corresponds to the metal aluminum sheath with small cross section, and large curvature corresponds to the metal aluminum sheath with large cross section.

[0024] The guide wheels at the end of each row of guide wheel groups protrude from the main body; the guide wheel groups are oppositely arranged with the cutting assembly.

[0025] The metal aluminum sheath is positioned in the positioning station and is in contact with the guide wheel groups, which means that the metal aluminum sheath is positioned with the curved arc segment matching the outer diameter thereof and is in contact with the guide wheel groups; the guide wheels at the end of each row of guide wheel groups span more than two wave crests of the metal aluminum sheath.

[0026] Since the metal aluminum sheath is a corrugated pipe structure, it has wave crests and troughs, therefore, the design of the guide wheel group lengthening structure mainly considers the distance between more than two wave crests of the metal aluminum sheath, so that the guide wheels at the end of the guide wheel group always span at least two wave crests when rolling, thereby ensuring the rolling balance. At the same time, the guide wheel group lengthening structure can reduce the shaking amount of the metal aluminum sheath when cutting left and right, so that the cutting deviation of the metal aluminum sheath after one round of cutting is greatly reduced, thereby ensuring the head-to-tail connection of the final cutting, so as to improve the cutting quality and the flatness of the cutting section.

[0027] Compared with the prior art, the present invention has the following advantages and beneficial effects: The hand-held cutting method for aluminum sheaths of the present invention can quickly and efficiently cut aluminum sheaths of different specifications and sizes. It can not only effectively control the appropriate cutting depth to solve the problem that traditional cutting methods are not easy to control the cutting depth, but also ensure the connection between the cut ends and the cut cross-section remains at a uniform horizontal plane, thereby ensuring the electrical performance of the cable. Attached Figure Description

[0028] Fig. 1 This is a schematic diagram of the cutting device used in the cutting method of the present invention;

[0029] Fig. 2 This is a schematic diagram of the feed mechanism and retraction button assembly in the cutting device used in the cutting method of the present invention;

[0030] Fig. 3 This is a schematic diagram of the cutting components in the cutting device used in the cutting method of the present invention;

[0031] Fig. 4 This is a schematic diagram of the aluminum sheath positioned on the cutting device;

[0032] Among them, 1 is the main body, 2 is the tool holder, 3 is the handwheel, 4 is the button, 5 is the limit plate, 6 is the cutting blade, 7 is the guide wheel assembly, 8 is the feed screw, 9 is the retraction spring, 10 is the locking spring, and 11 is the aluminum metal sheath. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0034] Example

[0035] like Figs. 1 to 4 As shown, the cutting device used in the handheld cutting method for aluminum sheaths of the present invention includes a main body 1 for positioning the aluminum sheath 11 and a blade holder 2 for cutting the aluminum sheath 11. The main body 1 is provided with a positioning station, and the blade holder 2 is movably connected to the main body 1 and moves towards the positioning station. The blade holder 2 is provided with a cutting assembly facing the positioning station. The cutting assembly includes a cutting blade 6 and a limiting plate 5, with the limiting plate 5 disposed on both sides of the cutting blade 6.

[0036] Specifically, the cutting blade 6 and the limiting plate 5 are coaxially mounted on the tool holder 2, with the cutting blade 6 protruding from the limiting plate 5. To ensure better contact between the limiting plate 5 and the aluminum sheath 11, the outer edge of the limiting plate 5 has a stepped structure for abutting against the aluminum sheath 11. During the adjustment of the tool holder 2 as it moves towards the positioning position, when the limiting plate 5 touches the aluminum sheath 11, the position and cutting depth of the cutting blade 6 can be determined. By limiting the cutting depth, the cutting depth can be controlled.

[0037] The movable connection between the tool holder 2 and the main body 1 means that the metal aluminum sheath cutting device further comprises a tool feeding mechanism arranged on the main body 1 and connected with the tool holder 2, so as to drive the tool holder 2 to move on the main body 1. Specifically, the tool feeding mechanism comprises a hand wheel 3, a tool feeding screw 8 and a tool retracting button assembly, wherein the tool feeding screw 8 is arranged in the tool holder 2 and extends out of the tool holder 2 to be connected with the hand wheel 3, and the tool retracting button assembly is rotatably connected with the main body 1 and is provided with a threaded portion for threadedly connecting with the tool feeding screw 8. The tool retracting button assembly comprises a button 4, a locking spring 10 and a mounting shaft (not shown), wherein the button 4 is rotatably connected with the main body 1 through the mounting shaft, one end of the locking spring 10 is connected with one end of the button 4, the other end of the locking spring 10 is connected with the main body 1, and the threaded portion is arranged at the other end of the button 4. The button 4 of the present application is threadedly connected with the tool feeding screw 8 through the threaded portion, so that the tool feeding screw 8 can be converted into linear motion by rotating the hand wheel 3, thereby enabling the tool holder 2 to move towards the positioning station.

[0038] The metal aluminum sheath cutting device of the present application further comprises a tool retracting spring 9, one end of which is connected with the main body 1 and the other end of which is connected with the tool holder 2, so as to facilitate the tool holder 2 to quickly retract.

[0039] The positioning station of the main body 1 of the present application is composed of a plurality of curved arc segments, and specifically, the curvature of the curved arc segments from top to bottom gradually increases. The design of the positioning station of the present application using curved arc segments with different curvatures is based on the consideration of the outer diameter of the metal aluminum sheath 11 with different cross sections, and the curvature changes from small to large, wherein small curvature corresponds to a metal aluminum sheath 11 with small cross section, and large curvature corresponds to a metal aluminum sheath 11 with large cross section.

[0040] In order to improve the stability of the metal aluminum sheath 11 during cutting by the cutting device, the positioning station is provided with a plurality of rows of guide wheel sets 7, and the guide wheels at the end of each row of guide wheel sets 7 protrude out of the main body 1. The guide wheel sets 7 are arranged opposite to the cutting assembly to provide guiding force during cutting by the cutting device.

[0041] The metal aluminum sheath handheld cutting method of the present application is as follows:

[0042] The cutting method comprises the steps of cutting the metal aluminum sheath: the metal aluminum sheath 11 is positioned on the positioning station and matched with the curved arc segment matched with the outer diameter thereof and matched with the guide wheel set 7, the guide wheels at the ends of each row of guide wheel sets 7 span more than two wave crests of the metal aluminum sheath 11. The hand wheel 3 is rotated to control the rotation of the feed screw 8, the feed screw 8 is threadedly connected with the button 4, under the action of the locking spring 10, the button 4 is always threadedly connected with the feed screw 8, so that when the hand wheel 3 is rotated, the feed screw 8 drives the tool holder 2 to move to the positioning station. When the cutting assembly touches the metal aluminum sheath 11, the cutting depth of the cutting blade 6 is limited by the limiting of the limiting piece 5; the main body 1 is rotated along the metal aluminum sheath 11 to cut a circle, so that the corrugated metal aluminum sheath 11 is cut; during the cutting, the guide wheel set 7 touches the metal aluminum sheath 11. During the cutting process, the position of the tool holder 2 on the main body 1 is continuously adjusted, and the cutting depth of the cutting blade 6 is limited by the limiting of the limiting piece 5 each time the tool holder 2 moves.

[0043] The cutting method further comprises the step of discharging the cut metal aluminum sheath 11:

[0044] The hand wheel 3 is reversely rotated, the button 4 is pressed to compress the locking spring 10 after the pressure of the tool holder 2 on the metal aluminum sheath 11 is removed, the threaded part of the button 4 is loosened from the thread of the feed screw 8, under the reset tension of the tool retracting spring 9, the tool holder 2 moves to the opposite direction of the positioning station, the tool is retracted, and the metal aluminum sheath 11 is discharged.

[0045] The guide wheel set 7 of the present application can provide a guiding force during cutting and can improve the stability of cutting positioning. In addition, since the metal aluminum sheath 11 is a corrugated pipe structure, it has wave crests and troughs, therefore, the design of the lengthened structure of the guide wheel set 7 mainly considers the distance between more than two wave crests in the metal aluminum sheath 11, so that the guide wheels at the ends of the guide wheel set 7 always span at least two wave crests when rolling, thereby ensuring the rolling balance. At the same time, the lengthened structure of the guide wheel set 7 can reduce the shaking amount of the metal aluminum sheath 11 during cutting, so that the cutting deviation of the metal aluminum sheath 11 after cutting a circle is greatly reduced, thereby ensuring that the last cutting head and tail are connected, so as to improve the cutting quality and the flatness of the cutting section.

[0046] The above embodiment is the preferred embodiment of the present application, but the embodiment of the present application is not limited by the above embodiment, any change, modification, replacement, combination, simplification made without departing from the spirit and principle of the present application shall be an equivalent replacement mode and shall be included in the protection scope of the present application.

Claims

1. A handheld cutting method for aluminum sheaths, characterized in that: The system includes a main body for positioning the aluminum sheath and a tool holder for cutting the aluminum sheath. The main body has a positioning station with several rows of guide wheels. The tool holder is movably connected to the main body and has a cutting assembly, which includes a cutting blade and a limiting plate. The cutting method includes the step of cutting the aluminum sheath: The aluminum sheath is positioned at the positioning station and fits against the guide wheel assembly; the control tool holder moves towards the positioning station, and when the cutting component touches the aluminum sheath, the cutting depth of the cutting blade is limited by the limiting plate; the handheld body rotates around the aluminum sheath for one revolution to achieve the cutting of the corrugated aluminum sheath; during cutting, the guide wheel assembly contacts the aluminum sheath, and the guide wheel at the end of each row of guide wheels spans two or more crests of the aluminum sheath; The outer edge of the limiting piece is provided with a stepped structure for abutting against the metal aluminum sheath; The cutting blade and the limiting plate are coaxially mounted on the tool holder, with the cutting blade protruding from the limiting plate and the limiting plate located on the side of the cutting blade.

2. The handheld cutting method for aluminum sheaths according to claim 1, characterized in that: During the cutting process, the position of the blade holder on the main body is constantly adjusted. Each movement of the blade holder is limited by the limiting plate to restrict the cutting depth of the cutting blade.

3. The handheld cutting method for aluminum sheaths according to claim 1, characterized in that: The control of the tool holder moving towards the positioning station refers to: setting up a tool feeding mechanism, which includes a handwheel, a tool feeding screw, a button, a locking spring, and a mounting shaft. The tool feeding screw is located inside the tool holder and extends out of the tool holder to connect with the handwheel. The button is rotatably connected to the main body through the mounting shaft and is provided with a threaded part for threaded connection with the tool feeding screw. One end of the locking spring is connected to one end of the button, and the other end is connected to the main body. Rotate the handwheel to control the rotation of the feed screw, which is threadedly connected to the button. Under the action of the locking spring, the button is always threadedly connected to the feed screw, so that when the handwheel is rotated, the feed screw drives the tool holder to move towards the positioning position.

4. The handheld cutting method for aluminum sheaths according to claim 3, characterized in that: The cutting method also includes the step of blanking the cut aluminum sheath: A retraction spring is provided, with one end of the spring connected to the main body and the other end connected to the tool holder; Rotate the handwheel in the opposite direction to release the pressure between the tool holder and the aluminum sheath. Then press the button to compress the locking spring, causing the threaded part of the button to loosen from the thread of the feed screw. Under the return spring's retraction force, the tool holder moves in the opposite direction to the positioning position, realizing tool retraction and aluminum sheath unloading.

5. The handheld cutting method for aluminum sheaths according to claim 1, characterized in that: The positioning station of the main body is composed of several curved arc segments connected together.

6. The handheld cutting method for aluminum sheaths according to claim 5, characterized in that: The curvature of the curved segment at the positioning station gradually increases from top to bottom.

7. The handheld cutting method for aluminum sheaths according to claim 5, characterized in that: The guide wheel at the end of each row of guide wheels protrudes from the main body; the guide wheel group is arranged opposite to the cutting component.

8. The handheld cutting method for aluminum sheaths according to claim 7, characterized in that: The positioning of the aluminum sheath at the positioning station and its fit with the guide wheel assembly means that the curved arc segment of the aluminum sheath, which matches its outer diameter, is positioned and fits with the guide wheel assembly.

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