Spring steel wire electric scissors

Abstract

The utility model discloses a spring steel wire electric shear which comprises a shell. A motor and a threaded connection cover are installed in the shell, the threaded connection cover is installed on the motor in a threaded mode, and the motor is provided with a power interface. According to the utility model, the spring steel wire is arranged at the first cutting groove and the second cutting groove, the transmission gear can be controlled to drive the toothed bar to swing by starting the motor, the movable cutter is driven to output torque to cut off the wire rod by utilizing the lever principle in the swinging process of the toothed bar, and the movable cutter which rotates can apply shearing force more uniformly in the shearing process; the shearing process is smoother, impact and vibration caused by rapid linear motion of the blade are reduced, the planetary gear is formed by combining a plurality of first movable gears, second movable gears and other structures for transmission, the planetary gear has high transmission precision, friction is reduced due to the fact that all transmission parts are provided with bearings, and the shearing efficiency is improved. And vibration and noise caused by transmission errors can be reduced, and the stability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spring steel wire production equipment, in particular to an electric shear for spring steel wire. Background Technique

[0002] An electric shear for spring steel wire is a kind of electric tool specially used for shearing spring steel wire. Taking the motor as the power source, the rotation speed of the motor is converted into the shearing force of the cutter through the transmission device to realize the shearing of the spring steel wire.

[0003] In the prior art, the shearing cutters of the electric shear for spring steel wire mostly move linearly. During the linear shearing process, due to the rapid movement of the blades and the reaction force of the material, relatively large noise and vibration may be generated. Therefore, an electric shear for spring steel wire is needed to meet people's needs. Content of the Utility Model

[0004] The purpose of the utility model is to provide an electric shear for spring steel wire to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: an electric shear for spring steel wire, including a housing; a motor and a threaded connection cover are installed inside the housing, the threaded connection cover is threadedly installed on the motor, a power interface is arranged on the motor, a transmission structure is installed inside the threaded connection cover, a connecting frame is threadedly installed on the threaded connection cover, a linkage structure is installed on the connecting frame, threads adapted to the inner wall of the threaded connection cover are arranged on both the motor and the connecting frame, a fixed cutter is installed on one side of the connecting frame, a shearing structure is installed on the fixed cutter, and a protection component is installed on the housing.

[0006] Preferably, the transmission structure includes a first gear disk and a second gear disk. Both the first gear disk and the second gear disk are located inside the threaded connection cover. A plurality of first movable gears are rotatably installed on one side of the first gear disk. A first fixed gear is installed at the output end of the motor. The first fixed gear meshes with the first movable gears. A plurality of second movable gears are rotatably installed on one side of the second gear disk. A second fixed gear is installed on one side of the first gear disk. The second movable gears mesh with the second fixed gear. A connecting shaft is installed on the inner wall of the connecting frame. The connecting shaft is installed on the second gear disk. A transmission bevel gear is installed at one end of the connecting shaft. A linkage tooth groove is formed on the inner wall of the threaded connection cover. The first movable gears and the second movable gears are both meshed with the linkage tooth groove. A block is installed on one side of the connecting shaft. A positioning groove is formed on the second gear disk. The block is movably installed in the positioning groove.

[0007] Preferably, two first bearings are installed on the inner wall of the connecting frame. The connecting shaft is installed on the inner walls of the two first bearings.

[0008] Preferably, the linkage structure includes a transmission shaft movably installed on the connecting frame. A tapered gear disc and a first nut are installed on the transmission shaft by threads. The first nut is located on one side of the tapered gear disc. One end of the transmission shaft is installed with a transmission gear. A limiting shaft is installed on the connecting frame. A toothed rod is rotatably installed on the limiting shaft. The toothed rod meshes with the transmission gear. A second nut is installed on the limiting shaft by threads. The second nut is located on one side of the toothed rod.

[0009] Preferably, a limiting groove is formed on the connecting frame, and a limiting block is arranged on the limiting shaft. The limiting block is movably installed in the limiting groove.

[0010] Preferably, an installation groove is formed on the inner wall of the connecting frame. Two second bearings are installed in the installation groove. The transmission shaft is installed on the inner walls of the two second bearings.

[0011] Preferably, the shearing structure includes a movable cutter rotatably installed on the limiting shaft. The movable cutter is located between the fixed cutter and the toothed rod. A clamping groove is formed on the connecting frame. The fixed cutter is movably installed in the clamping groove. A second cutting groove is formed on the fixed cutter. A first cutting groove is formed on the movable cutter. The first cutting groove corresponds to the second cutting groove. A pin is installed on one side of the toothed rod. A linkage hole is formed on the movable cutter. The pin is movably installed in the linkage hole.

[0012] Preferably, a movable disc is installed on the inner wall of the toothed rod. The movable disc is rotatably installed on the limiting shaft. A plurality of rotating wheels are rotatably installed on the movable disc. The rotating wheels are in contact with the second nut.

[0013] Preferably, the protection assembly includes a mounting base. Two mounting holes are formed on the mounting base. Four clamps are movably installed on the mounting base. Two clamps on the same side are rotatably installed with each other. The housing is located between the mounting base and the four clamps. The same hoop is movably sleeved on two corresponding clamps. A baffle is installed on one side of the hoop. The baffle is located on one side of the toothed rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] (1) In the utility model, the spring steel wire is placed at the first cutting groove and the second cutting groove. By starting the motor, it is possible to control the transmission gear to drive the toothed rod to swing. During the swinging process of the toothed rod, the lever principle is used to drive the movable cutter to output torque to cut the wire. The rotating movable cutter can apply a more uniform shearing force during the shearing process, making the shearing process smoother, reducing the impact and vibration generated by the rapid linear movement of the blade. And by using a combination of structures such as a plurality of first movable gears and second movable gears to form a planetary gear for transmission, the planetary gear has a high transmission accuracy. Coupled with the fact that bearings are provided for each transmission component to reduce friction, it helps to reduce the vibration and noise generated by transmission errors and improve the stability of the device.

[0016] (2) When in use, the electric shear can be installed on the numerical control equipment through the mounting base and the mounting hole, and can be used in cooperation with the numerical control equipment for processing spring steel wires. Or the electric shear can be held by hand to cut spring steel wires, and each component adopts an assembled design, which is helpful for separately replacing the worn components in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 1 is a schematic perspective view of the electric shear for spring steel wires proposed by the present utility model;

[0018] Figure 2 FIG. 2 is a schematic side view of the electric shear for spring steel wires proposed by the present utility model;

[0019] Figure 3 FIG. 3 is a schematic partial view of the electric shear for spring steel wires proposed by the present utility model;

[0020] Figure 4 FIG. 4 is a schematic connection structure view of the motor part of the electric shear for spring steel wires proposed by the present utility model;

[0021] Figure 5 FIG. 5 is a schematic view of the rack structure of the electric shear for spring steel wires proposed by the present utility model;

[0022] Figure 6 FIG. 6 is an exploded view of the transmission structure part of the electric shear for spring steel wires proposed by the present utility model;

[0023] Figure 7 FIG. 7 is a schematic cross-sectional view of the threaded connection cover of the electric shear for spring steel wires proposed by the present utility model;

[0024] Figure 8 FIG. 8 is an exploded view of the connecting frame of the electric shear for spring steel wires proposed by the present utility model;

[0025] Figure 9 FIG. 9 is an exploded side view of the connecting frame of the electric shear for spring steel wires proposed by the present utility model.

[0026] In the figure: 1. Outer shell; 2. Motor; 3. Threaded connection cover; 301. First gear disc; 302. Second gear disc; 303. First movable gear; 304. First fixed gear; 305. Second movable gear; 306. Second fixed gear; 307. Connecting shaft; 308. Transmission bevel gear; 309. Linkage tooth groove; 310. Block; 311. Positioning groove; 312. First bearing; 4. Connecting frame; 401. Transmission shaft; 402. Bevel gear disc; 403. First nut; 404. Transmission gear; 405. Limit shaft; 406. Rack; 407. Second nut; 408. Limit groove; 409. Limit block; 410. Installation groove; 411. Second bearing; 5. Fixed cutter; 501. Movable cutter; 502. Card slot; 503. First cutting groove; 504. Pin; 505. Linkage hole; 506. Movable disc; 507. Runner; 508. Second cutting groove; 6. Mounting seat; 601. Mounting hole; 602. Clamp; 603. Hoop; 604. Baffle; 7. Power interface. Detailed implementation manner

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment: Please refer to Figures 1-9 , the present invention provides a technical solution: an electric spring steel wire shear, including an outer shell 1; a motor 2 and a threaded connection cover 3 are installed inside the outer shell 1, the threaded connection cover 3 is threadedly installed on the motor 2, a power interface 7 is provided on the motor 2, a transmission structure is installed inside the threaded connection cover 3, a connecting frame 4 is threadedly installed on the threaded connection cover 3, a linkage structure is installed on the connecting frame 4, threads adapted to the inner wall of the threaded connection cover 3 are provided on both the motor 2 and the connecting frame 4, a fixed cutter 5 is installed on one side of the connecting frame 4, a shearing structure is installed on the fixed cutter 5, a protection component is installed on the outer shell 1, the transmission structure is driven to operate by the motor 2, the linkage structure is driven to move by the transmission structure, and during the movement of the linkage structure, the lever principle can be used to output torque to drive the shearing structure to cut the wire, and the protection component can shield some positions of the linkage structure to avoid being interfered by the outside world.

[0029] Further, the transmission structure includes a first gear disk 301 and a second gear disk 302. Both the first gear disk 301 and the second gear disk 302 are located inside the threaded connection cover 3. A plurality of first movable gears 303 are rotatably installed on one side of the first gear disk 301. The output end of the motor 2 is installed with a first fixed gear 304. The first fixed gear 304 meshes with the first movable gears 303. A plurality of second movable gears 305 are rotatably installed on one side of the second gear disk 302. A second fixed gear 306 is installed on one side of the first gear disk 301. The second movable gears 305 mesh with the second fixed gear 306. A connecting shaft 307 is installed on the inner wall of the connecting frame 4. The connecting shaft 307 is installed on the second gear disk 302. A transmission bevel gear 308 is installed at one end of the connecting shaft 307. A linkage tooth groove 309 is formed on the inner wall of the threaded connection cover 3. The first movable gears 303 and the second movable gears 305 both mesh with the linkage tooth groove 309. A block 310 is installed on one side of the connecting shaft 307. A positioning groove 311 is formed on the second gear disk 302. The block 310 is movably installed in the positioning groove 311. When the motor 2 is started to drive the first fixed gear 304 to rotate by its output end, the rotating first fixed gear 304 can drive a plurality of first movable gears 303 to rotate simultaneously through meshing with the first movable gears 303. During the rotation of the first movable gears 303, they will perform a circular motion around the first fixed gear 304 through meshing with the linkage tooth groove 309 on the inner wall of the threaded connection cover 3, so that the first movable gears 303 performing circular motion drive the first gear disk 301 to rotate, and the first gear disk 301 drives the second fixed gear 306 to rotate. When the second fixed gear 306 rotates, it can drive the second movable gears 305 to rotate through meshing with the second movable gears 305. The rotating second movable gears 305 also perform a circular motion around the second fixed gear 306 through meshing with the linkage tooth groove 309. The second movable gears 305 performing circular motion will drive the second gear disk 302 to rotate, so that the rotating second gear disk 302 drives the connecting shaft 307 to rotate through the cooperation of the block 310 and the positioning groove 311. The continuously rotating connecting shaft 307 can drive the transmission bevel gear 308 to rotate.

[0030] Further, two first bearings 312 are installed on the inner wall of the connecting frame 4. The connecting shaft 307 is installed on the inner walls of the two first bearings 312. Through the arrangement of the first bearings 312, the connecting shaft 307 can rotate more smoothly during the rotation process and reduce friction.

[0031] Furthermore, the linkage structure includes a transmission shaft 401, which is movably mounted on the connecting frame 4. A conical toothed disc 402 and a first nut 403 are threadedly mounted on the transmission shaft 401, and the first nut 403 is located on one side of the conical toothed disc 402. A transmission gear 404 is mounted at one end of the transmission shaft 401. A limiting shaft 405 is mounted on the connecting frame 4, and a gear rod 406 is rotatably mounted on the limiting shaft 405, and the gear rod 406 is meshed with the transmission gear 404. A second nut 407 is threadedly mounted on the limiting shaft 405, and the second nut 407 is located on one side of the gear rod 406. When the transmission conical gear 308 rotates, the conical toothed disc 402 is driven to rotate by meshing with the conical toothed disc 402. The rotating conical toothed disc 402 can drive the transmission shaft 401 to rotate, so that the rotating transmission shaft 401 drives the transmission gear 404 to rotate, and the transmission gear 404 can drive the gear rod 406 to rotate on the limiting shaft 405.

[0032] Furthermore, a limiting groove 408 is opened on the connecting frame 4, and a limiting block 409 is set on the limiting shaft 405. The limiting block 409 is movably installed in the limiting groove 408. By setting the limiting groove 408 and the limiting block 409, the angle of the limiting shaft 405 can be limited so that it will not rotate with the gear rod 406.

[0033] Furthermore, an installation groove 410 is opened on the inner wall of the connecting frame 4, and two second bearings 411 are installed in the installation groove 410. The transmission shaft 401 is installed on the inner walls of the two second bearings 411. By setting the second bearings 411, the friction generated when the transmission shaft 401 rotates can be reduced.

[0034] Furthermore, the shearing structure includes a movable tool 501, which is rotatably mounted on the limiting shaft 405, and the movable tool 501 is located between the fixed tool 5 and the gear rod 406. A slot 502 is provided on the connecting frame 4, and the fixed tool 5 is movably mounted in the slot 502. A second cutting slot 508 is provided on the fixed tool 5, and a first cutting slot 503 is provided on the movable tool 501, and the first cutting slot 503 corresponds to the second cutting slot 508. A bayonet 504 is installed on one side of the gear rod 406, and a linkage hole 505 is provided on the movable tool 501, and the bayonet 504 is movably mounted in the linkage hole 505. The continuously rotating gear rod 406 can drive the movable tool 501 to rotate through the cooperation of the bayonet 504 and the linkage hole 505, so that the rotating movable tool 501 drives the first cutting slot 503 to be staggered with the second cutting slot 508 on the fixed tool 5, so that its shearing surface gradually shrinks. As the shearing surface decreases and the shearing force increases, the spring steel wire will eventually be cut off.

[0035] Further, a movable disk 506 is installed on the inner wall of the rack bar 406. The movable disk 506 is rotatably installed on the limiting shaft 405. A plurality of rotating wheels 507 are rotatably installed on the movable disk 506. The rotating wheels 507 are in contact with the second nut 407. By providing the movable disk 506 and the rotating wheels 507, the friction between the rack bar 406 and the second nut 407 during rotation can be reduced, and wear can be decreased.

[0036] Further, the protection assembly includes a mounting seat 6. Two mounting holes 601 are formed in the mounting seat 6. Four clamps 602 are movably installed on the mounting seat 6. The two clamps 602 on the same side are rotatably installed with each other. The housing 1 is located between the mounting seat 6 and the four clamps 602. The same hoop 603 is movably sleeved on the corresponding two clamps 602. A baffle 604 is installed on one side of the hoop 603. The baffle 604 is located on one side of the rack bar 406. By using the mounting holes 601 and the clamps 602, the electric shear can be conveniently installed on the spring steel wire production equipment for use or can be used by hand. By providing the hoop 603 and the baffle 604, part of the transmission gear 404 and the second nut 407 can be shielded.

[0037] The working principle is as follows: While placing the spring steel wire into the second cutting groove 508 and the first cutting groove 503, the motor 2 can be started to drive the first fixed gear 304 to rotate at its output end. The rotating first fixed gear 304 can drive multiple first movable gears 303 to rotate simultaneously through meshing with the multiple first movable gears 303. During the rotation of the first movable gear 303, it will perform a circular motion around the first fixed gear 304 through meshing with the inner wall linkage tooth groove 309 of the threaded connection cover 3, causing the rotating first movable gear 303 to drive the first gear disk 301 to rotate. The first gear disk 301 drives the second fixed gear 306 to rotate. When the second fixed gear 306 rotates, it can drive the second movable gears 305 to rotate through meshing with the multiple second movable gears 305. The rotating second movable gears 305 also perform a circular motion around the second fixed gear 306 through meshing with the linkage tooth groove 309. The circularly moving second movable gears 305 drive the second gear disk 302 to rotate, causing the rotating second gear disk 302 to drive the connecting shaft 307 to rotate through the cooperation of the clamping block 310 and the positioning groove 311. The setting of the first bearing 312 enables the connecting shaft 307 to rotate more smoothly during rotation, reducing friction. The continuously rotating connecting shaft 307 can drive the transmission bevel gear 308 to rotate. When the transmission bevel gear 308 rotates, it drives the bevel gear disk 402 to rotate through meshing with the bevel gear disk 402. The rotating bevel gear disk 402 can drive the transmission shaft 401 to rotate through the threaded cooperation with the first nut 403 and the transmission shaft 401. The setting of the second bearing 411 can reduce the friction generated during the rotation of the transmission shaft 401, causing the rotating transmission shaft 401 to drive the transmission gear 404 to rotate. The transmission gear 404 can drive the rack 406 to rotate on the limiting shaft 405. The setting of the limiting groove 408 and the limiting block 409 can limit the angle of the limiting shaft 405, so that it will not rotate with the rack 406. The continuously rotating rack 406 can drive the movable cutter 501 to rotate through the cooperation of the pin 504 and the linkage hole 505, causing the rotating movable cutter 501 to stagger the first cutting groove 503 and the second cutting groove 508 on the fixed cutter 5, gradually reducing the shearing surface. As the shearing surface decreases and the shearing force increases, the spring steel wire will eventually be cut off. Thus, during the rotation of the rack 406, the torque is output using the lever principle to cut the wire. After cutting, control the motor 2 to rotate its output end in the reverse direction, and the movable cutter 501 and the first cutting groove 503 can be reset to deal with subsequent shearing operations. The electric shear can be conveniently installed on the spring steel wire production equipment or used by hand using the mounting holes 601 and the clamp 602. The setting of the hoop 603 and the baffle 604 can shield part of the transmission gear 404 and the second nut 407 to avoid external interference.

[0038] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A spring steel wire electric shear, comprising a housing (1); characterized in that: The housing (1) is provided with a motor (2) and a threaded connection cover (3), the threaded connection cover (3) is threadedly mounted on the motor (2), the motor (2) is provided with a power supply interface (7), a transmission structure is installed in the threaded connection cover (3), a connecting frame (4) is threadedly mounted on the threaded connection cover (3), a linkage structure is installed on the connecting frame (4), the motor (2) and the connecting frame (4) are both provided with threads that are compatible with the inner wall of the threaded connection cover (3), a fixed tool (5) is installed on one side of the connecting frame (4), a shearing structure is installed on the fixed tool (5), and a protective component is installed on the housing (1).

2. The electric spring steel wire shear according to claim 1, characterized in that: The transmission structure comprises a first gear plate (301) and a second gear plate (302), the first gear plate (301) and the second gear plate (302) are both located in a threaded connection cover (3), a plurality of first movable gears (303) are rotatably mounted on one side of the first gear plate (301), a first fixed gear (304) is mounted on the output end of the motor (2), the first fixed gear (304) is meshed with the first movable gear (303), a plurality of second movable gears (305) are rotatably mounted on one side of the second gear plate (302), a second fixed gear (306) is mounted on one side of the first gear plate (301), and the second movable gear (30 5) is meshed with the second fixed gear (306), a connecting shaft (307) is installed on the inner wall of the connecting frame (4), the connecting shaft (307) is installed on the second gear plate (302), a transmission bevel gear (308) is installed on one end of the connecting shaft (307), a linkage tooth groove (309) is opened on the inner wall of the threaded connection cover (3), the first movable gear (303) and the second movable gear (305) are meshed with the linkage tooth groove (309), a clamping block (310) is installed on one side of the connecting shaft (307), a positioning groove (311) is opened on the second gear plate (302), and the clamping block (310) is movably installed in the positioning groove (311).

3. The electric spring steel wire shear according to claim 1, characterized in that: Two first bearings (312) are installed on the inner wall of the connecting frame (4), and the connecting shaft (307) is installed on the inner walls of the two first bearings (312).

4. The electric spring steel wire shear according to claim 1, characterized in that: The linkage structure comprises a transmission shaft (401), the transmission shaft (401) is movably mounted on a connecting frame (4), a conical toothed disc (402) and a first nut (403) are threadedly mounted on the transmission shaft (401), the first nut (403) is located on one side of the conical toothed disc (402), a transmission gear (404) is mounted on one end of the transmission shaft (401), a limiting shaft (405) is mounted on the connecting frame (4), a gear rod (406) is rotatably mounted on the limiting shaft (405), the gear rod (406) is meshed with the transmission gear (404), a second nut (407) is threadedly mounted on the limiting shaft (405), and the second nut (407) is located on one side of the gear rod (406).

5. The electric spring steel wire shear according to claim 1, characterized in that: The connection frame (4) is provided with a limiting groove (408), the limiting shaft (405) is provided with a limiting block (409), and the limiting block (409) is movably installed in the limiting groove (408).

6. The electric spring steel wire shear according to claim 1, characterized in that: The inner wall of the connecting frame (4) is provided with a mounting groove (410), two second bearings (411) are mounted in the mounting groove (410), and the transmission shaft (401) is mounted on the inner walls of the two second bearings (411).

7. The electric spring steel wire shear according to claim 1, characterized in that: The shearing structure comprises a movable tool (501), the movable tool (501) is rotatably mounted on a limiting shaft (405), the movable tool (501) is located between a fixed tool (5) and a toothed rod (406), a slot (502) is provided on a connecting frame (4), the fixed tool (5) is movably mounted in the slot (502), a second cutting slot (508) is provided on the fixed tool (5), a first cutting slot (503) is provided on the movable tool (501), the first cutting slot (503) corresponds to the second cutting slot (508), a latch pin (504) is installed on one side of the toothed rod (406), a linkage hole (505) is provided on the movable tool (501), and the latch pin (504) is movably mounted in the linkage hole (505).

8. The electric spring steel wire shear according to claim 4, characterized in that: A movable disk (506) is installed on the inner wall of the gear rod (406), and the movable disk (506) is rotatably installed on the limiting shaft (405). A plurality of rotating wheels (507) are rotatably installed on the movable disk (506), and the rotating wheels (507) are in contact with the second nut (407).

9. The electric spring steel wire shear according to claim 1, characterized in that: The protective component comprises a mounting seat (6), two mounting holes (601) are provided on the mounting seat (6), four clamps (602) are movably mounted on the mounting seat (6), two clamps (602) located on the same side are rotatably mounted with respect to each other, the housing (1) is located between the mounting seat (6) and the four clamps (602), the same clamp (603) is movably sleeved on two corresponding clamps (602), a baffle (604) is installed on one side of the clamp (603), and the baffle (604) is located on one side of the gear rod (406).

Images