A synchronous belt wheel dynamic balancing cutter oscillation mechanism

Abstract

The utility model provides a kind of synchronous pulley dynamic balance cutting tool oscillation mechanism, it is related to mechanical transmission technical field, including T-shaped support frame, driving structure, dynamic balance structure and cutting tool connecting assembly;The utility model is driven by the above-mentioned structure, driving structure drives dynamic balance structure to realize the stable movement of cutting tool, three driven eccentric wheels are brought by driving eccentric wheel, and with the symmetrical layout and arc eccentric block design of driven eccentric wheel, meshing with the engagement of first belt double-sided tooth block and eccentric gear slot, not only effectively offset rotation inertia, reduce mechanism vibration, prolong equipment service life, but also ensure that power transmission has no slip, realize the synchronous rotation of multiple eccentric wheels, improve cutting tool oscillation frequency stability.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and more specifically, to a synchronous belt pulley dynamic balancing cutting knife oscillation mechanism. Background Technology

[0002] Early vibrating cutters fixed the motor to a vertically moving support plate, with an eccentric wheel directly connected to the motor shaft. The motor's rotation caused the cutter, fixed to the eccentric shaft, to move up and down, thus vibrating the cutter. While this structure was simple, it had many drawbacks. Despite dynamic balancing of the eccentric shaft, in actual use, when cutting fabrics of varying thicknesses, the centrifugal force generated by the single eccentric wheel's rotation was not effectively counteracted, causing the dynamic balance point to shift. This led to a tendency for the cutter's trajectory to deviate, resulting in decreased cutting accuracy. Furthermore, the vibration accelerated wear on the support frame and transmission components, shortening the equipment's lifespan, and increasing maintenance costs due to frequent replacement of vulnerable parts. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a synchronous belt pulley dynamic balancing cutter oscillation mechanism. This synchronous belt pulley dynamic balancing cutter oscillation mechanism has good dynamic balancing effect, the cutter's movement trajectory is less prone to deviation, cutting accuracy is high, and it also reduces wear on parts and extends equipment life.

[0004] To achieve the above objectives, this utility model adopts the following technical solution:

[0005] A synchronous belt pulley dynamic balancing cutter oscillation mechanism includes a T-shaped support frame. The T-shaped support frame is equipped with a drive structure, a dynamic balancing structure, and a cutter connection assembly. Both the drive structure and the cutter connection assembly are connected to the dynamic balancing structure. The dynamic balancing structure includes a driving eccentric wheel, first driven eccentric wheels symmetrically arranged on both sides of the driving eccentric wheel, a second driven eccentric wheel located vertically above the driving eccentric wheel, and a swing arm. The swing arm connects the driving eccentric wheel and the cutter connection assembly. The driving eccentric wheel... The first driven eccentric wheel and the second driven eccentric wheel are connected by a first belt. The outer rings of the driving eccentric wheel, the first driven eccentric wheel and the second driven eccentric wheel are all provided with tooth grooves arranged in a circumferential direction. The first belt is provided with multiple tooth blocks on both sides. The tooth blocks on one side of the first belt mesh with the tooth grooves of the driving eccentric wheel, and the tooth blocks on the other side of the first belt mesh with the tooth grooves of the first driven eccentric wheel and the second driven eccentric wheel. The driving eccentric wheel is provided with a first eccentric block, and the first driven eccentric wheel is provided with a second eccentric block.

[0006] Furthermore, both the first eccentric block and the second eccentric block are arc-shaped.

[0007] Furthermore, the T-shaped support frame also includes a transmission assembly, and the drive structure is connected to the dynamic balancing structure through the transmission assembly.

[0008] Furthermore, the transmission assembly includes a first pulley fixed on the output shaft of the drive structure, a second pulley, a third pulley, and a fourth pulley that are on the same horizontal plane as the first pulley; the fourth pulley is located between the second pulley and the third pulley, and the fourth pulley is coaxially connected to the driving eccentric wheel; the first pulley, the second pulley, and the third pulley are connected to the fourth pulley via a second belt.

[0009] Furthermore, the T-shaped support frame is provided with a through groove, and the fourth pulley and the active eccentric wheel are located at both ends of the through groove's extension direction.

[0010] Furthermore, the T-shaped support frame is provided with two symmetrical guide rails, and the guide rails are connected to a slide table via a slider. The balancing structure and the fourth pulley are fixed on both sides of the slide table, and the fourth pulley moves up and down in the through groove.

[0011] Furthermore, the slide table is provided with two locking rollers on the side near the fourth pulley, and the two locking rollers respectively lock the second belt between the second pulley and the fourth pulley and the second belt between the third pulley and the fourth pulley.

[0012] Furthermore, the cutter connecting assembly includes a connecting rod and a cutter connecting block. One end of the connecting rod is connected to the swing arm and the other end is connected to the cutter connecting block. A mounting screw is fixed to the end of the cutter connecting block away from the connecting rod.

[0013] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0014] This invention provides a synchronous belt pulley dynamic balancing cutter oscillation mechanism. The dynamic balancing structure is driven by a drive structure to achieve stable movement of the cutter. The active eccentric wheel drives three driven eccentric wheels. The symmetrical layout of the active and driven eccentric wheels and the arc-shaped eccentric block design, combined with the meshing of the double-sided toothed block of the first belt with the tooth groove of the eccentric wheel, not only effectively counteracts rotational inertia, reduces mechanism vibration, and extends the service life of the equipment, but also ensures that the power transmission is slip-free, realizes the synchronous rotation of multiple eccentric wheels, and improves the stability of the cutter oscillation frequency. Attached Figure Description

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

[0016] Figure 2 for Figure 1 A partially enlarged structural diagram of part A in the middle;

[0017] Figure 3 This is a front view structural diagram of the present utility model;

[0018] Figure 4 for Figure 3 A partially enlarged structural diagram of section B;

[0019] Figure 5 for Figure 3 A magnified schematic diagram of part C in the middle section;

[0020] Figure 6 This is a schematic diagram of the rear view structure of this utility model;

[0021] Figure 7 This is a schematic diagram of the overall structure of the transmission component in this utility model.

[0022] The components include: 1. T-shaped support frame; 101. Through groove; 102. Guide rail; 103. Slider; 104. Slide table; 2. Drive structure; 3. Dynamic balancing structure; 301. Active eccentric wheel; 3011. First eccentric block; 302. First driven eccentric wheel; 3021. Second eccentric block; 303. Second driven eccentric wheel; 304. Swing arm; 305. First belt; 306. Tooth groove; 307. Tooth block; 4. Cutting knife connecting assembly; 401. Connecting rod; 402. Cutting knife connecting block; 4021. Mounting screw; 5. Transmission assembly; 501. First pulley; 502. Second pulley; 503. Third pulley; 504. Fourth pulley; 505. Second belt; 506. Picking wheel. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0024] Example

[0025] like Figure 1-7As shown, this utility model provides a synchronous belt pulley dynamic balancing cutter oscillation mechanism, including a T-shaped support frame 1, which is integrally formed. The T-shaped support frame 1 is provided with a drive structure 2, a dynamic balancing structure 3, and a cutter connecting assembly 4. The drive structure 2 and the cutter connecting assembly 4 are both connected to the dynamic balancing structure 3. The dynamic balancing structure 3 includes an active eccentric wheel 301, a first driven eccentric wheel 302 symmetrically arranged on both sides of the active eccentric wheel 301, a second driven eccentric wheel 303 arranged vertically above the active eccentric wheel 301, and a swing arm 304. The swing arm 304 connects the active eccentric wheel 301 and the cutter connecting assembly 4. The active eccentric wheel 301, the first driven eccentric wheel 302, the first driven eccentric wheel 302, the second driven eccentric wheel 303 arranged vertically above the active eccentric wheel 301, and a swing arm 304. Driven eccentric wheel 302 and second driven eccentric wheel 303 are connected by a first belt 305. The outer rings of the driving eccentric wheel 301, the first driven eccentric wheel 302 and the second driven eccentric wheel 303 are all provided with tooth grooves 306 arranged in a circumferential direction. The first belt 305 is provided with multiple tooth blocks 307 on both sides. The tooth blocks 307 on one side of the first belt 305 mesh with the tooth grooves 306 of the driving eccentric wheel 301, and the tooth blocks 307 on the other side of the first belt 305 mesh with the tooth grooves 306 of the first driven eccentric wheel 302 and the second driven eccentric wheel 303. The driving eccentric wheel 301 is provided with a first eccentric block 3011, and the first driven eccentric wheel 302 is provided with a second eccentric block 3021.

[0026] This synchronous belt pulley dynamic balancing cutter oscillation mechanism achieves stable cutter movement by driving dynamic balancing structure 3 through drive structure 2. Dynamic balancing structure 3 includes an active eccentric wheel 301, two first driven eccentric wheels 302, and a second driven eccentric wheel 303. The active eccentric wheel 301 drives the first driven eccentric wheels 302 on both sides and the vertically upward second driven eccentric wheel 303 to rotate synchronously via a first belt 305. The double-sided toothed blocks 307 of the first belt 305 respectively engage with the teeth of the active eccentric wheel 301 and the driven eccentric wheels. The engagement of groove 306 ensures slip-free power transmission, enabling synchronous rotation of multiple eccentric wheels and thus precise power transmission. This also avoids the problem of excessive vibration caused by the rotation of a single eccentric wheel in traditional equipment. Furthermore, the first driven eccentric wheel 302 is symmetrically arranged on both sides of the active eccentric wheel 301, and the second driven eccentric wheel 303 is arranged vertically above the active eccentric wheel 301. The three driven eccentric wheels form a triangular structure, which is more stable and effectively counteracts rotational inertia, further reducing mechanism vibration and extending the service life of the equipment.

[0027] The first eccentric block 3011 on the active eccentric wheel 301 and the second eccentric block 3021 on the first driven eccentric wheel 302 are weight blocks used to counteract rotational inertia, reduce the impact of vibration on the mechanism, and achieve dynamic balance.

[0028] The swing arm 304 connects the active eccentric wheel 301 and the cutting blade connecting assembly 4, converting the rotational motion of the active eccentric wheel 301 into the reciprocating linear oscillation motion of the cutting blade. This increases the cutting speed and produces a smooth cut, making it suitable for precision machining scenarios. The cutting blade connecting assembly 4 transmits the oscillation motion of the swing arm 304 to the cutting blade, thus better realizing high-frequency cutting actions.

[0029] Furthermore, in another embodiment, both the first eccentric block 3011 and the second eccentric block 3021 are arc-shaped. The design of the arc-shaped weight block better counteracts rotational inertia, reduces the impact of vibration on the mechanism, and achieves dynamic balance.

[0030] Furthermore, in another embodiment, the T-shaped support frame 1 further includes a transmission assembly 5, and the drive structure 2 is connected to the dynamic balancing structure 3 through the transmission assembly 5; the transmission assembly 5 includes a first pulley 501 fixed on the output shaft of the drive structure 2, a second pulley 502, a third pulley 503 and a fourth pulley 504 that are on the same horizontal plane as the first pulley 501; the fourth pulley 504 is located between the second pulley 502 and the third pulley 503, and the fourth pulley 504 is coaxially connected to the driving eccentric wheel 301; the first pulley 501, the second pulley 502 and the third pulley 503 are connected to the fourth pulley 504 through a second belt 505.

[0031] In this embodiment, the transmission component 5 of the synchronous belt pulley dynamic balancing cutter oscillation mechanism achieves precise power transmission through multiple pulleys, distributing the load on the second belt 505, reducing the risk of stress concentration in the transmission system, and extending belt life. All pulleys are on the same horizontal plane, making the overall structure of the T-shaped support frame more compact. Furthermore, the output shaft of the drive structure 2 drives the first pulley 501 to rotate. The first pulley 501 drives the second pulley 502 and the third pulley 503 to rotate synchronously through the second belt 505. The fourth pulley 504 is located between the second pulley 502 and the third pulley 503 and is coaxially connected to the active eccentric wheel 301, directly transmitting the power of the drive structure 2 to the actuator of the dynamic balancing structure 3. This reduces energy loss in intermediate transmission links and improves the response speed of dynamic balancing adjustment. The fourth pulley 504 achieves synchronous rotation of the active eccentric wheel 301 through friction transmission with the second belt 505, realizing efficient power transmission from the drive structure 2 to the dynamic balancing structure 3.

[0032] Furthermore, the flexibility of belt drives can absorb high-frequency vibrations from the drive structure 2, reducing the impact on the dynamic balancing structure 3. Moreover, the first belt 305 and the second belt 505 can be replaced individually after wear, without requiring complete disassembly of the transmission assembly. Belt drives also require no lubrication, reducing maintenance frequency and costs compared to gear or chain drives. Additionally, the coplanar design of the pulleys facilitates daily inspection and cleaning. Furthermore, by replacing pulleys with different diameters, such as increasing the diameter of the first pulley 501 or decreasing the diameter of the fourth pulley 504, the transmission ratio can be flexibly adjusted to adapt to different load or speed requirements. For example, in high-load scenarios, increasing the diameter of the fourth pulley 504 can reduce the speed and increase the output torque.

[0033] Furthermore, in another embodiment, the T-shaped support frame 1 is provided with a through groove 101, and the fourth pulley 504 and the active eccentric wheel 301 are located at both ends of the through groove 101 extending in the direction of the groove hole; the T-shaped support frame 1 is provided with two symmetrical guide rails 102, and the guide rails 102 are connected to a slide table 104 through a slider 103. The balance structure 3 and the fourth pulley 504 are fixed on both sides of the slide table 104, and the fourth pulley 504 moves up and down in the through groove 101; the slide table 104 is provided with two locking rollers 506 on the side near the fourth pulley 504, and the two locking rollers 506 respectively lock the second belt 505 between the second pulley 502 and the fourth pulley 504 and the second belt 505 between the third pulley 503 and the fourth pulley 504.

[0034] The slide table 104 slides on the T-shaped support frame 1 via the guide rail 102 and the slider 103, enabling quick disassembly and component replacement, reducing maintenance costs, and adapting to different cutting frequencies and load requirements. The fourth pulley 504 and the active eccentric wheel 301 move synchronously with the slide table. The direction of movement of the slide table 104 is consistent with the direction of the through groove 101, realizing the up and down movement of the fourth pulley 504 within the through groove 101. The two locking rollers 506 on the slide table 104 respectively lock the second belt 505 between the second pulley 502 and the fourth pulley 504, and between the third pulley 503 and the fourth pulley 504. Through the limiting action of the locking rollers 506, the tension change of the second belt 505 caused by the movement of the slide table is automatically compensated, ensuring that the power transmission is slip-free, improving transmission efficiency and stability, and extending the belt service life. The symmetrical design of the guide rail 102 and the slider 103 of the slide table 104 reduces vibration during the movement of the slide table, ensuring that the active eccentric wheel 301 rotates smoothly, thereby improving the stability of the cutting blade oscillation frequency and cutting accuracy.

[0035] Furthermore, in another embodiment, the cutter connecting assembly 4 includes a connecting rod 401 and a cutter connecting block 402. One end of the connecting rod 401 is connected to the swing arm 304 and the other end is connected to the cutter connecting block 402. The end of the cutter connecting block 402 away from the connecting rod 401 is fixed with a mounting screw 4021.

[0036] The connecting rod 401 in the cutter connecting assembly 4 transmits the oscillating motion of the swing arm 304 to the cutter connecting block 402. The cutter is fixed to the cutter connecting block 402 by the mounting screw 4021 to realize high-frequency cutting action.

[0037] Working Principle: This synchronous belt pulley dynamic balancing cutter oscillation mechanism transmits power from the drive structure 2 to the fourth pulley 504 via the first pulley 501 and the second belt 505 in the transmission assembly 5. The fourth pulley 504 is coaxially connected to the active eccentric wheel 301, driving the active eccentric wheel 301 to rotate. The active eccentric wheel 301 drives the first driven eccentric wheels 302 on both sides and the second driven eccentric wheel 303 vertically above to rotate synchronously via the first belt 305. The double-sided toothed blocks 307 of the first belt 305 mesh with the tooth grooves 306 of the active eccentric wheel 301 and the driven eccentric wheel, respectively, to achieve precise power delivery. The first eccentric block 3011 on the active eccentric wheel 301 and the second eccentric block 3021 on the first driven eccentric wheel 302 use an arc design to counteract rotational inertia, reduce the impact of vibration on the mechanism, and achieve dynamic balance. One end of the swing arm 304 is connected to the active eccentric wheel 301, and the other end is connected to the cutter connecting assembly 4, which converts the rotational motion of the eccentric wheel into the reciprocating linear oscillation motion of the cutter. The connecting rod 401 in the cutter connecting assembly 4 transmits the oscillation motion of the swing arm 304 to the cutter connecting block 402. The cutter is fixed to the cutter connecting block 402 by the mounting screw 4021 to achieve high-frequency cutting action.

[0038] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0039] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A synchronous belt pulley dynamic balancing cutter oscillation mechanism, comprising a T-shaped support frame (1), characterized in that: The T-shaped support frame (1) is provided with a drive structure (2), a dynamic balancing structure (3) and a cutting blade connection assembly (4), and the drive structure (2) and the cutting blade connection assembly (4) are both connected to the dynamic balancing structure (3); The dynamic balancing structure (3) includes an active eccentric wheel (301), a first driven eccentric wheel (302) symmetrically arranged on both sides of the active eccentric wheel (301), a second driven eccentric wheel (303) arranged above the active eccentric wheel (301) in the vertical direction, and a swing arm (304). The swing arm (304) connects the active eccentric wheel (301) and the cutting blade connecting assembly (4). The active eccentric wheel (301), the first driven eccentric wheel (302), and the second driven eccentric wheel (303) are connected by a first belt (305). The outer rings of the active eccentric wheel (301), the first driven eccentric wheel (302), and the second driven eccentric wheel (303) are all provided with tooth grooves (306) arranged in a circumferential direction. The first belt (305) is provided with multiple tooth blocks (307) on both sides. The tooth block (307) on one side of the first belt (305) meshes with the tooth groove (306) of the active eccentric wheel (301), and the tooth block (307) on the other side of the first belt (305) meshes with the tooth groove (306) of the first driven eccentric wheel (302) and the second driven eccentric wheel (303). The active eccentric wheel (301) is provided with a first eccentric block (3011), and the first driven eccentric wheel (302) is provided with a second eccentric block (3021).

2. The synchronous belt pulley dynamic balancing cutter oscillation mechanism according to claim 1, characterized in that: Both the first eccentric block (3011) and the second eccentric block (3021) are arc-shaped.

3. The synchronous belt pulley dynamic balancing cutter oscillation mechanism according to claim 1, characterized in that: The T-shaped support frame (1) also includes a transmission assembly (5), and the drive structure (2) is connected to the dynamic balance structure (3) through the transmission assembly (5).

4. The synchronous belt pulley dynamic balancing cutter oscillation mechanism according to claim 3, characterized in that: The transmission assembly (5) includes a first pulley (501) fixed on the output shaft of the drive structure (2), a second pulley (502) on the same horizontal plane as the first pulley (501), a third pulley (503) and a fourth pulley (504). The fourth pulley (504) is located between the second pulley (502) and the third pulley (503), and the fourth pulley (504) is coaxially connected to the driving eccentric wheel (301); The first pulley (501), the second pulley (502) and the third pulley (503) are connected to the fourth pulley (504) via the second belt (505).

5. The synchronous belt pulley dynamic balancing cutter oscillation mechanism according to claim 4, characterized in that: The T-shaped support frame (1) has a through groove (101), and the fourth pulley (504) and the active eccentric wheel (301) are located at both ends of the through groove (101) in the extension direction of the slot.

6. The synchronous belt pulley dynamic balancing cutter oscillation mechanism according to claim 5, characterized in that: The T-shaped support frame (1) is provided with two symmetrical guide rails (102). The guide rails (102) are connected to a slide table (104) via a slider (103). The balance structure (3) and the fourth pulley (504) are fixed on both sides of the slide table (104). The fourth pulley (504) moves up and down in the through groove (101).

7. The synchronous belt pulley dynamic balancing cutter oscillation mechanism according to claim 6, characterized in that: The slide (104) is provided with two locking rollers (506) on the side near the fourth pulley (504). The two locking rollers (506) respectively lock the second belt (505) between the second pulley (502) and the fourth pulley (504) and the second belt (505) between the third pulley (503) and the fourth pulley (504).

8. The synchronous belt pulley dynamic balancing cutter oscillation mechanism according to claim 1, characterized in that: The cutter connecting assembly (4) includes a connecting rod (401) and a cutter connecting block (402). One end of the connecting rod (401) is connected to the swing arm (304) and the other end is connected to the cutter connecting block (402). The end of the cutter connecting block (402) away from the connecting rod (401) is fixed with a mounting screw (4021).

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