Handheld plate special-shaped cutting electric saw

Abstract

The utility model discloses a handheld plate special-shaped cutting electric saw, which belongs to the technical field of plate cutting devices and is characterized by comprising an outer shell and a cutting mechanism, a first winding reel and a second winding reel are rotatably connected with a middle shell, one end of a fret saw blade penetrates through a guide through hole of a first extension arm to be fixed on the first winding reel, and the other end of the fret saw blade penetrates through a guide through hole of a second extension arm to be fixed on the second winding reel. And the other end of the second extension arm penetrates through the guide through hole of the second extension arm and is wound and fixed on the second winding reel. Compared with the prior art, the device has the characteristics of small size and convenience in carrying.

Description

Technical Field

[0001] This utility model relates to the technical field of sheet metal cutting devices, and in particular to a handheld electric saw for cutting irregular shapes of sheet metal. Background Technology

[0002] During building construction, to improve energy efficiency and living comfort, it is usually necessary to insulate the building's exterior walls, a step that often involves hanging insulation boards. Insulation boards, as important thermal insulation materials, can effectively reduce energy consumption and maintain stable indoor temperatures. However, in actual construction, due to the increasingly diverse exterior designs of buildings, the shapes of exterior walls have also become varied, which presents considerable challenges for the installation of insulation boards. Especially when encountering curved, sloping, or irregularly shaped walls, conventional rectangular or square insulation boards cannot meet the fitting requirements, thus often necessitating the use of custom-shaped insulation boards that can be tailored to the wall's shape.

[0003] To efficiently and accurately produce these irregularly shaped insulation boards, there is an urgent need in the market for a professional irregularly shaped insulation board cutting device. Unfortunately, existing insulation board cutting devices generally have some limitations. These devices are often large in size, not only occupying a lot of construction space, but also being particularly cumbersome and inconvenient to carry during on-site handling and transfer. Especially when working in high-rise buildings or in confined spaces, the limitations of large cutting devices are even more pronounced, increasing the difficulty of construction and potentially affecting efficiency and safety. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of the existing technology by providing a handheld electric saw for cutting irregular shapes of sheet metal, which is small in size and easy to carry.

[0005] This utility model provides a handheld electric saw for cutting irregular shapes in sheet metal, characterized in that it includes an outer shell and a cutting mechanism. The outer shell includes a middle shell, a first extension arm, and a second extension arm. The middle shell is connected to the first and second extension arms respectively. The first and second extension arms are respectively provided with guide holes. The middle shell has a cavity inside, and the guide holes on the first and second extension arms communicate with the cavity of the middle shell. The cutting mechanism is installed in the cavity of the middle shell. The cutting mechanism includes a first spool, a second spool, a wire saw blade, a drive gear, a first driven gear, a second driven gear, and a transmission gear. The first and second spools are rotatably connected to the middle shell. One end of the wire saw blade passes through the first spool. One end of the extension arm is fixed to the first spool through a guide hole, and the other end passes through the guide hole of the second extension arm and is wound and fixed to the second spool. The side wall of the intermediate housing is provided with a through hole, and the motor is fixedly installed on the side wall of the intermediate housing. The motor shaft passes through the through hole of the intermediate housing and is fixedly connected to the gear hole of the drive gear. The first spool is coaxially connected to the first driven gear, and the second spool is coaxially connected to the second driven gear. The transmission gear is rotatably connected to the side wall of the intermediate housing through a rotating shaft, and the transmission gear meshes with the second driven gear. The drive gear is an incomplete gear. The drive gear meshes with the first driven gear. After the drive gear disengages from the first driven gear during rotation, it will mesh with the transmission gear.

[0006] Furthermore, the first extension arm and the second extension arm are perpendicularly distributed.

[0007] Furthermore, the outer ends of the first and second extension arms are respectively equipped with ear plates, and the ear plates of the first and second extension arms are rotatably connected to the first guide wheel.

[0008] Furthermore, a handle is fixedly installed at one end of the intermediate housing where the second telescopic arm is mounted.

[0009] Furthermore, both ends of the wire saw blade are respectively wrapped around the first guide wheel.

[0010] Furthermore, two second guide wheels are respectively installed in the guide through holes of the first and second extension arms, and the wire saw blade passes around the second guide wheels in sequence, so that the wire saw blade is located in the middle position of the guide through holes of the first and second extension arms.

[0011] Furthermore, partitions are installed in the guide holes of the first and second extension arms, respectively. The partitions have through holes, through which the wire saw blade passes. A sponge sleeve is provided between the wire saw blade and the through hole of the partition.

[0012] Compared with the prior art, the present invention has the following outstanding advantages:

[0013] 1. This utility model is small in size, easy to carry and transfer, and convenient for construction in high-rise buildings or confined spaces;

[0014] 2. In this utility model, a partition plate is installed in the guide through hole of the first extension arm and the second extension arm respectively. The partition plate has a through hole. The wire saw blade passes through the through hole of the partition plate. A sponge sleeve is provided between the wire saw blade and the through hole of the partition plate, so as to clean the saw slag on the wire saw blade. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0017] Figure 3 This is the front view of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of this utility model;

[0019] Among them, 1. Outer shell; 101. First extension arm; 102. Intermediate shell; 103. Second extension arm; 104. Handle; 2. Cutting mechanism; 201. Drive gear; 202. First driven gear; 203. Transmission gear; 204. Second driven gear; 205. Second spool; 206. First spool; 207. First guide wheel; 208. Second guide wheel; 209. Wire saw blade; 210. Electric motor. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] like Figures 1-3 As shown, this utility model includes an outer shell 1 and a cutting mechanism 2.

[0022] The outer shell 1 includes an intermediate shell 102, a first extension arm 101, and a second extension arm 103. The intermediate shell 102 is fixedly connected to the first extension arm 101 and the second extension arm 103. The first extension arm 101 and the second extension arm 103 are respectively provided with guide holes. The intermediate shell 102 has a cavity inside. The guide holes on the first extension arm 101 and the second extension arm 103 are connected to the cavity of the intermediate shell 102. The first extension arm 101 and the second extension arm 103 are perpendicularly distributed.

[0023] The outer ends of the first extension arm 101 and the second extension arm 103 are respectively equipped with ear plates, and the ear plates of the first extension arm 101 and the second extension arm 103 are rotatably connected to the first guide wheel.

[0024] In the optimized solution, a handle 104 is fixedly installed at one end of the intermediate housing 102 where the second telescopic arm is mounted.

[0025] like Figure 4 As shown, a cutting mechanism 2 is installed inside the cavity of the intermediate housing 102. The cutting mechanism 2 includes a first spool 206, a second spool 205, a wire saw blade 209, a drive gear 201, a first driven gear 202, a second driven gear 204, and a transmission gear 203. A central shaft is provided at the center of the first spool and the second spool 205. The central shafts of the first spool 206 and the second spool 205 are rotatably connected to the side wall of the intermediate housing 102. One end of the wire saw blade 209 passes through the guide hole of the first extension arm 101 and is fixed on the first spool 206. The other end passes through the guide hole of the second extension arm 103 and is wound around and fixed on the second spool 205.

[0026] The two ends of the wire saw blade 209 respectively pass around the first guide wheel 207. In the optimized scheme, the wire saw blade 209 is a flexible steel wire saw blade.

[0027] Two second guide wheels 208 are respectively installed in the guide through holes of the first extension arm 101 and the second extension arm 103. The wire saw blade 209 passes around the second guide wheels in sequence, so that the wire saw blade 209 is located in the middle position of the guide through holes of the first extension arm 101 and the second extension arm 103.

[0028] The first extension arm 101 and the second extension arm 103 are respectively equipped with partitions in the guide through holes. The partitions have through holes, and the wire saw blade 209 passes through the through holes in the partitions. A sponge sleeve is provided between the wire saw blade 209 and the through holes in the partitions, so as to clean the saw slag on the wire saw blade 209.

[0029] The intermediate housing 102 has a through hole on its side wall. The motor 210 is fixedly installed on the side wall of the intermediate housing 102. The motor shaft of the motor 210 passes through the through hole of the intermediate housing 102 and is fixedly connected to the gear hole of the driving gear 201. The first spool 206 is coaxially fixedly connected to the first driven gear 202. The second spool 205 is coaxially fixedly connected to the second driven gear 204. The transmission gear 203 is rotatably connected to the side wall of the intermediate housing 102 through a rotating shaft. The transmission gear 203 meshes with the second driven gear 204.

[0030] The driving gear 201 is an incomplete gear. The driving gear 201 meshes with the first driven gear 202. After the driving gear 201 disengages from the first driven gear 202 during rotation, it will mesh with the transmission gear 203. When the driving gear 201 disengages from the transmission gear 203, it will mesh with the first driven gear 202 again.

[0031] In the optimized scheme, the motor 210 is a torque motor 210.

[0032] The operation process is as follows: When using this utility model, start the motor 210. The motor 210 drives the drive gear 201 to rotate, the drive gear 201 drives the first driven gear 202 to rotate, the first driven gear 202 drives the first spool 206 to rotate, and the wire saw blade 209 is wound around the first spool 206. After the drive gear 201 disengages from the first driven gear 202, it engages with the transmission gear 203, driving the transmission gear 203 to rotate. The transmission gear 203 drives the second driven gear 204 to rotate, and the second driven gear 204 drives the second spool 205 to rotate, and the wire saw blade 209 is wound around the second spool 205. When the drive gear 201 disengages from the transmission gear 203, it will re-engage with the first driven gear 202, causing the wire saw blade 209 to reciprocate between the first extension arm 101 and the second extension arm 103 to cut the board.

[0033] It should be noted that the specific embodiments of this utility model have been described in detail. For those skilled in the art, all obvious changes made to it without departing from the spirit and scope of this utility model are within the protection scope of this utility model.

Claims

1. A handheld electric saw for cutting irregular shapes in sheet metal, characterized in that: The device includes an outer shell (1) and a cutting mechanism (2). The outer shell (1) includes an intermediate shell (102), a first extension arm (101), and a second extension arm (103). The intermediate shell (102) is connected to the first extension arm (101) and the second extension arm (103) respectively. The first extension arm (101) and the second extension arm (103) are respectively provided with guide holes. The intermediate shell (102) has a cavity inside. The guide holes on the first extension arm (101) and the second extension arm (103) are connected to the intermediate shell (102). The cavity of the intermediate housing (102) is connected; a cutting mechanism (2) is installed in the cavity of the intermediate housing (102). The cutting mechanism (2) includes a first spool (206), a second spool (205), a wire saw blade (209), a drive gear (201), a first driven gear (202), a second driven gear (204), and a transmission gear (203). The first spool (206) and the second spool (205) are rotatably connected to the intermediate housing (102). One end of the wire saw blade (209) passes through the first extension arm (10). 1) The guide through hole is fixed on the first spool (206), and the other end passes through the guide through hole of the second extension arm (103) and is wound and fixed on the second spool (205); the side wall of the intermediate housing (102) is provided with a through hole, the motor (210) is fixedly installed on the side wall of the intermediate housing (102), the motor shaft of the motor (210) passes through the through hole of the intermediate housing (102) and is fixedly connected to the gear hole of the drive gear (201), and the first spool (206) and the first driven gear (202) are coaxially connected. Next, the second spool (205) is coaxially connected to the second driven gear (204), and the transmission gear (203) is rotatably connected to the side wall of the intermediate housing (102) through a rotating shaft. The transmission gear (203) meshes with the second driven gear (204). The driving gear (201) is an incomplete gear. The driving gear (201) meshes with the first driven gear (202). After the driving gear (201) disengages from the first driven gear (202) during rotation, it will mesh with the transmission gear (203).

2. The handheld electric saw for cutting irregular shapes of sheet metal according to claim 1, characterized in that: The first extension arm (101) and the second extension arm (103) are perpendicularly distributed.

3. The handheld electric saw for cutting irregular shapes of sheet metal according to claim 1, characterized in that: The outer ends of the first extension arm (101) and the second extension arm (103) are respectively equipped with ear plates, and the ear plates of the first extension arm (101) and the second extension arm (103) are rotatably connected to the first guide wheel.

4. The handheld electric saw for cutting irregular shapes of sheet metal according to claim 1, characterized in that: A handle (104) is fixedly installed at one end of the intermediate housing (102) where the second telescopic arm is mounted.

5. The handheld electric saw for cutting irregular shapes of sheet metal according to claim 3, characterized in that: The two ends of the wire saw blade (209) are respectively wrapped around the first guide wheel (207).

6. The handheld electric saw for cutting irregular shapes of sheet metal according to claim 5, characterized in that: Two second guide wheels (208) are respectively installed in the guide through holes of the first extension arm (101) and the second extension arm (103). The wire saw blade (209) passes around the second guide wheels in sequence, so that the wire saw blade (209) is located in the middle position of the guide through holes of the first extension arm (101) and the second extension arm (103).

7. The handheld electric saw for cutting irregular shapes of sheet metal according to claim 1, characterized in that: The first extension arm (101) and the second extension arm (103) are respectively equipped with partitions in their guide through holes. The partitions have through holes, and the wire saw blade (209) passes through the through holes in the partitions. A sponge sleeve is provided between the wire saw blade (209) and the through holes in the partitions.

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