Double-linkage dynamic balance cutter oscillation mechanism

Abstract

The utility model provides a kind of double connecting rod dynamic balance cutting tool oscillation mechanism, it is related to mechanical transmission technical field, including first swing bar, second swing bar, double swing arm rotating block and connecting shaft, one end of first swing bar and one end of second swing bar are respectively connected with the connecting rod installation groove rotation connection of double swing arm rotating block two sides, the end of second swing bar away from connecting rod installation groove connects cutting tool;The utility model is by setting above-mentioned structure, when first swing bar is subjected to power and generates a direction force, drive double swing arm rotating block rotates around connecting shaft, second swing bar is subjected to opposite direction force and performs reverse swing, the centrifugal force of two swing bars is mutually cancelled, reduce equipment vibration, prolong the service life of equipment, swing trajectory simultaneously makes cutting tool produce high-frequency vertical oscillation, due to the effect of dynamic balance, cutting tool does not appear excessive sway in the process of oscillation, not only improve the quality and precision of cutting, but also reduce noise, optimize working environment.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and more specifically, to a double-link dynamic balancing cutting blade oscillation mechanism. Background Technology

[0002] With the development of the manufacturing industry, the requirements for cutting precision and efficiency are becoming increasingly stringent. In industries such as clothing, leather, and composite materials, high-quality cutting is a key factor in ensuring product quality. For example, in high-end clothing manufacturing, precise cutting ensures more perfect fabric splicing, improving the overall quality of the garment. At the same time, increasing production efficiency is also a goal pursued by enterprises to meet the rapidly changing demands of the market.

[0003] In the field of industrial cutting, traditional cutting blade vibration mechanisms have many shortcomings. Single-link mechanisms are a common type, simple in structure but poor in dynamic balance. During operation, a single link generates significant inertial forces and torques, causing noticeable vibration in the cutting blade. This vibration not only reduces cutting accuracy, resulting in uneven edges and affecting product quality, but also damages the equipment itself, shortening its lifespan. Furthermore, the vibration generates considerable noise, worsening the working environment and impacting the physical and mental health of operators.

[0004] While some complex multi-link mechanisms can improve dynamic balance to some extent, their overly cumbersome structure increases manufacturing and maintenance costs. Excessive links and connecting parts are prone to wear and tear and malfunction, requiring frequent maintenance and parts replacement. This not only increases production costs but also reduces production efficiency due to equipment downtime for repairs. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a double-link dynamic balancing cutter oscillation mechanism. This double-link 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.

[0006] To achieve the above objectives, this utility model adopts the following technical solution:

[0007] A double-link dynamic balancing cutter oscillation mechanism includes a first swing arm, a second swing arm, a double-swing arm rotating block, and a connecting shaft. The double-swing arm rotating block has connecting rod mounting slots on both its left and right sides. One end of the first swing arm and one end of the second swing arm are rotatably connected to the connecting rod mounting slots on both sides of the double-swing arm rotating block, respectively. The end of the second swing arm away from the connecting rod mounting slot is connected to the cutter. A through hole is provided on the side of the double-swing arm rotating block, through which the connecting shaft passes, allowing the double-swing arm rotating block to rotate on the connecting shaft.

[0008] Furthermore, the bottom surface of the two connecting rod mounting slots is an inclined plane with an inclination angle of 35-50°.

[0009] Furthermore, the double swing arm rotating block is provided with mounting holes at one end near the two connecting rod mounting slots, and the first swing arm and the second swing arm are provided with slot shaft matching holes at both ends, and one of the slot shaft matching holes corresponds to the mounting hole.

[0010] Furthermore, the grooved shaft is matched and connected to the grooved shaft matching hole, and the grooved shaft has an annular groove, on which a shaft elastic retaining ring is fixed.

[0011] Furthermore, the end of the second rocker arm away from the connecting rod mounting groove is connected to the cutting blade via a sliding connection structure;

[0012] Furthermore, the sliding connection assembly includes a sliding sleeve, a slider, and a cutting blade connection assembly; one end of the slider is connected to a second rocker arm and the other end is fixedly connected to the cutting blade connection assembly, and the end of the cutting blade connection assembly away from the slider is provided with at least two fixing members; the outer wall of the sliding sleeve is fixedly connected to the machine housing, the inner wall of the sliding sleeve is sleeved on the outer wall of the slider, and the slider moves up and down inside the sliding sleeve.

[0013] Furthermore, the cutter connection assembly includes a double-hole cutter mounting shaft, at least one bearing, and a bearing housing; the outer wall of the bearing housing is threaded, and the bearing housing is matched and connected to the slider; the outer ring of the double-hole cutter mounting shaft is fitted with a bearing, and the bearing is rotatably connected within the bearing housing; the double-hole cutter mounting shaft has a cutter fixing groove, and the cutter fixing groove contains at least two fixing components.

[0014] Furthermore, the bearings along the axial direction of the double-hole tool-mounting shaft are, in sequence, a first thrust ball bearing, a first deep groove ball bearing, a second deep groove ball bearing, and a second thrust ball bearing.

[0015] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0016] This invention provides a double-link dynamic balance cutting knife oscillation mechanism. The double-swing arm rotating block is rotatably connected to the first and second swing arms respectively through the connecting rod mounting slots on both sides, forming a double-link linkage. When the first swing arm is subjected to power and generates a force in one direction, it drives the double-swing arm rotating block to rotate around the connecting shaft, thereby causing the second swing arm to be subjected to a force in the opposite direction and swing in the opposite direction. The two swing arms swing in opposite directions under the rotation of the double-swing arm rotating block around the connecting shaft, and their centrifugal forces cancel each other out, reducing equipment vibration and extending the service life of the equipment. At the same time, the end of the second swing arm is connected to the cutting knife, and its swing trajectory causes the cutting knife to generate high-frequency vertical oscillation. Due to the dynamic balance, the cutting knife will not wobble excessively during the oscillation process, which not only improves the cutting quality and accuracy, but also reduces noise and optimizes the working environment.

[0017] The sliding connection structure ensures that the cutter maintains a linear motion during its up-and-down movement, preventing it from wobbling and thus improving cutting accuracy and stability, guaranteeing cutting quality. Furthermore, the cutter is connected to the sliding connection structure via a fixing component, facilitating its installation, disassembly, and replacement, reducing maintenance costs and time.

[0018] The components of this utility model are rationally arranged, and the overall structure is compact, reducing the space occupied by the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of the first swing arm, the second swing arm, and the double swing arm rotating block in this utility model;

[0021] Figure 3 This is a schematic diagram of the overall structure of the double-swing arm rotating block in this utility model;

[0022] Figure 4 This is an exploded view of the connecting assembly of the sliding sleeve, slider, and cutting blade in this utility model;

[0023] Figure 5 This is a schematic diagram of the left-side structure of this utility model;

[0024] Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure shown in the AA direction;

[0025] Figure 7 for Figure 6 A magnified schematic diagram of part B in the middle section.

[0026] The components are as follows: 1. First swing arm; 2. Second swing arm; 3. Double swing arm rotating block; 301. Connecting rod mounting groove; 302. Through hole; 303. Mounting hole; 4. Connecting shaft; 5. Cutting blade; 6. Sliding connection assembly; 601. Sliding sleeve; 602. Slider; 603. Cutting blade connecting assembly; 6031. Fixing component; 6032. Double-hole cutting shaft; 60321. Cutting blade fixing groove; 6033. Bearing; 60331. First thrust ball bearing; 60332. First deep groove ball bearing; 60333. Second deep groove ball bearing; 60334. Second thrust ball bearing; 6034. Bearing seat; 7. Groove shaft matching hole; 8. Groove shaft; 9. Shaft elastic retaining ring. Detailed Implementation

[0027] 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.

[0028] Example

[0029] like Figure 1-3 As shown, this utility model provides a double-link dynamic balancing cutter oscillation mechanism, including a housing. Inside the housing are a first swing rod 1, a second swing rod 2, a double-swing arm rotating block 3, and a connecting shaft 4. The double-swing arm rotating block 3 has connecting rod mounting grooves 301 on both its left and right sides. One end of the first swing rod 1 and one end of the second swing rod 2 are rotatably connected to the connecting rod mounting grooves 301 on both sides of the double-swing arm rotating block 3. The end of the second swing rod 2 away from the connecting rod mounting groove 301 is connected to a cutter 5. The side of the double-swing arm rotating block 3 has a through hole 302. The side of the double-swing arm rotating block 3 is centrally symmetrical about the center of the hole 302. The connecting shaft 4 passes through the through hole 302 and the double-swing arm rotating block 3 can rotate on the connecting shaft 4. When the first swing rod 1 is oscillating under force, the double-swing arm rotating block 3 drives the second swing rod 2 to oscillate in the opposite direction.

[0030] The double-swing arm rotating block 3 is rotatably connected to the first swing arm 1 and the second swing arm 2 via the connecting rod mounting slots 301 on both sides, forming a double-link linkage. After the equipment is started, the power source converts the power into the swing motion of the double-link through a specific transmission device. In practical applications, the frequency and amplitude of the swing motion can be adjusted by adjusting the speed of the motor or changing the transmission ratio. When the first swing arm 1 is subjected to a force in one direction, it drives the double-swing arm rotating block 3 to rotate around the connecting shaft 4, thereby causing the second swing arm 2 to be subjected to a force in the opposite direction and swing in the opposite direction. The two swing arms swing in opposite directions under the rotation of the double-swing arm rotating block 3 around the connecting shaft 4, and their centrifugal forces cancel each other out, reducing equipment vibration. At the same time, the end of the second swing arm 2 is connected to the cutting blade, and its swing trajectory causes the cutting blade to generate high-frequency vertical oscillation. Due to the effect of dynamic balance, the cutting blade will not wobble excessively during the oscillation, ensuring the quality and accuracy of cutting and extending the service life of the cutting blade.

[0031] Furthermore, in another embodiment, the bottom surfaces of the two connecting rod mounting slots 301 are inclined surfaces with an inclination angle of 35-50°. The two inclined surfaces slope from the upper side of the double-swing arm rotating block 3 towards the left side and from the lower side towards the right side, respectively. The inclination angle is the degree of inclination of the slot bottom surface relative to the horizontal plane. The 35-50° inclination angle of the bottom surface of the connecting rod mounting slots 301 optimizes the motion trajectory of the swing arm, causing it to generate a non-linear motion trajectory during swing, enhancing the cutting depth and uniformity of the cutter, and extending the tool life.

[0032] Furthermore, in another embodiment, the double swing arm rotating block 3 is provided with mounting holes 303 at one end near the two connecting rod mounting slots 301, and the first swing arm 1 and the second swing arm 2 are provided with slot shaft matching holes 7 at both ends, and one slot shaft matching hole 7 corresponds to the mounting hole 303;

[0033] The groove shaft matching hole 7 is matched and connected to the groove shaft 8, and the groove shaft 8 has an annular groove, on which a shaft elastic retaining ring 9 is fixed.

[0034] The grooved shaft matching hole 7 at one end of the first swing arm 1 and the second swing arm 2 is connected to the mounting hole 303 on the double swing arm rotating block 3 via the grooved shaft 8. The inner diameter of the shaft elastic retaining ring 9 is slightly smaller than the shaft diameter of the grooved shaft 8. During installation, snap ring pliers must be used to insert the pliers into the pliers hole of the shaft elastic retaining ring 9 to expand the retaining ring. The shaft elastic retaining ring 9 is then inserted into the annular groove on the grooved shaft 8 through elastic deformation, which is used to fix the axial movement of the grooved shaft 8 and play a role in preventing loosening. This ensures the stability of the connection between the first swing arm 1 and the second swing arm 2 and the double swing arm rotating block 3, avoids the parts from falling off or shifting during high-speed oscillation, and supports quick disassembly and assembly for easy maintenance.

[0035] like Figure 1-4 As shown, further, in another embodiment, the end of the second rocker arm 2 away from the connecting rod mounting groove 301 is connected to the cutter 5 via a sliding connection structure 6. The sliding connection assembly 6 includes a sliding sleeve 601, a slider 602, and a cutter connection assembly 603. One end of the slider 602 is connected to the second rocker arm 2, and the other end is fixedly connected to the cutter connection assembly 603. The end of the cutter connection assembly 603 away from the slider 602 is provided with at least two fixing members 6031, which are used to connect and fix the cutter 5. The outer wall of the sliding sleeve 601 is fixedly connected to the machine housing, and the inner wall of the sliding sleeve 601 is sleeved on the outer wall of the slider 602, and the slider 602 moves up and down within the sliding sleeve 601.

[0036] In practical applications, the sliding sleeve 601 is fixed to the machine housing. When the second swing arm 2 moves, the sliding sleeve 601 acts as a guide. The second swing arm 2 drives the connected slider 602 to move linearly within the sliding sleeve 601. The slider 602 is connected to the cutter 5 through the fixing part 6031 on the cutter connecting assembly 603, thereby driving the cutter 5 to move up and down to achieve the cutting action. The sliding connection structure composed of the sliding sleeve 601 and the slider 602 ensures that the cutter 5 maintains linear motion during up and down movement, avoiding cutter wobbling, thereby improving cutting accuracy and stability and ensuring cutting quality. Moreover, the fixing part 6031 on the cutter connecting assembly 603 can easily connect and fix the cutter 5, facilitating the installation, disassembly and replacement of the cutter, reducing maintenance costs and time. At the same time, this structure rationally arranges the components, resulting in a compact overall structure and reducing the space occupied by the equipment.

[0037] like Figure 4-7 As shown, in another embodiment, the cutter connecting assembly 603 includes a double-hole cutter mounting shaft 6032, at least one bearing 6033, and a bearing seat 6034; the outer wall of the bearing seat 6034 is threaded, and the bearing seat 6034 is matched and connected to the slider 602; the outer ring of the double-hole cutter mounting shaft 6032 is fitted with the bearing 6033, and the bearing 6033 is rotatably connected within the bearing seat 6034; the double-hole cutter mounting shaft 6032 has a cutter fixing groove 60321, and at least two fixing members 6031 are provided in the cutter fixing groove 60321 for fixing the cutter 5.

[0038] When the second rocker arm 2 drives the slider 602 to move up and down, the bearing seat 6034 connected to it also moves up and down accordingly. The double-hole tool-mounting shaft 6032 rotates in the bearing seat 6034 through the bearing 6033. The cutting blade 5 is fixed in the cutting blade fixing groove 60321 of the double-hole tool-mounting shaft 6032. In this way, the cutting blade 5 can not only cut by moving up and down with the slider 602, but also be flexibly adjusted by the rotation of the bearing 6033, improving the flexibility and adaptability of cutting. The bearing 6033 can provide stable support for the double-hole tool-mounting shaft 6032, reduce the vibration and impact on the cutting blade 5 during cutting, and extend the service life of the cutting blade and the equipment.

[0039] Furthermore, in another embodiment, the bearing 6033 is, in sequence along the axial direction of the double-hole tool-mounting shaft 6032, a first thrust ball bearing 60331, a first deep groove ball bearing 60332, a second deep groove ball bearing 60333, and a second thrust ball bearing 60334.

[0040] During the rotation of the double-hole tool-mounting shaft 6032, the first thrust ball bearing 60331 and the second thrust ball bearing 60334 are responsible for bearing the axial force to prevent the double-hole tool-mounting shaft 6032 from moving in the axial direction. The first deep groove ball bearing 60332 and the second deep groove ball bearing 60333 bear the radial force to ensure the stable rotation of the double-hole tool-mounting shaft 6032 in the radial direction. The cooperation of each bearing not only ensures that the double-hole tool-mounting shaft 6032 can work stably when subjected to forces in different directions, thereby ensuring the stable cutting of the cutter 5 and improving the overall load-bearing capacity of the equipment, but also the synergistic effect of multiple bearings can effectively reduce the vibration and noise of the cutter 5 during rotation, making the equipment run more smoothly, reducing the wear of each bearing, extending the service life of the bearings, and reducing the maintenance cost of the equipment.

[0041] Working Principle: This double-link dynamic balancing cutter oscillation mechanism uses a double-swing arm rotating block 3, which is rotatably connected to the first swing arm 1 and the second swing arm 2 via connecting rod mounting slots 301 on both sides, forming a double-link linkage. The power source converts the power into the swing motion of the double-link through a specific transmission device. The first swing arm 1 swings in one direction under the power, driving the double-swing arm rotating block 3 to rotate around the connecting shaft 4. As a result, the inertial force generated by the second swing arm 2 can swing in the opposite direction. This asynchronous swing causes the cutter to produce regular oscillations under the combined action of the two links. The two swing arms swing in opposite directions under the rotation of the double-swing arm rotating block 3 around the connecting shaft 4. The inertial force and inertial torque generated during the motion can cancel each other out or be reduced to a minimum, thereby achieving dynamic balance. This reduces vibration and noise during the movement of the mechanism, improving its stability and service life.

[0042] 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.

[0043] 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.

[0044] 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 double-link dynamic balancing cutter oscillation mechanism, comprising a first swing arm (1), a second swing arm (2), a double-swing arm rotating block (3), and a connecting shaft (4), characterized in that: The double-swing arm rotating block (3) has connecting rod mounting slots (301) on both the left and right sides. One end of the first swing rod (1) and one end of the second swing rod (2) are rotatably connected to the connecting rod mounting slots (301) on both sides of the double-swing arm rotating block (3). The end of the second swing rod (2) away from the connecting rod mounting slot (301) is connected to the cutter (5). The side of the double-swing arm rotating block (3) has a through hole (302). The connecting shaft (4) passes through the through hole (302) and the double-swing arm rotating block (3) can rotate on the connecting shaft (4).

2. The double-link dynamic balancing cutter oscillation mechanism according to claim 1, characterized in that: The bottom surface of the two connecting rod mounting slots (301) is an inclined surface with an inclination angle of 35-50°.

3. The double-link dynamic balancing cutter oscillation mechanism according to claim 1, characterized in that: The double swing arm rotating block (3) has a mounting hole (303) at one end near the two connecting rod mounting slots (301), and the first swing arm (1) and the second swing arm (2) have slot shaft matching holes (7) at both ends, and one of the slot shaft matching holes (7) corresponds to the mounting hole (303).

4. The double-link dynamic balancing cutter oscillation mechanism according to claim 3, characterized in that: The groove shaft matching hole (7) is matched and connected to the groove shaft (8), the groove shaft (8) has an annular groove, and a shaft elastic retaining ring (9) is fixed on the annular groove.

5. The double-link dynamic balancing cutter oscillation mechanism according to claim 1, characterized in that: The end of the second rocker arm (2) away from the connecting rod mounting groove (301) is connected to the cutter (5) via the sliding connection assembly (6).

6. The double-link dynamic balancing cutter oscillation mechanism according to claim 5, characterized in that: The sliding connection assembly (6) includes a sliding sleeve (601), a slider (602), and a cutting blade connection assembly (603); one end of the slider (602) is connected to the second swing arm (2), and the other end is fixedly connected to the cutting blade connection assembly (603). The cutting blade connection assembly (603) is provided with at least two fixing members (6031) at the end away from the slider (602); the outer wall of the sliding sleeve (601) is fixedly connected to the machine housing, and the inner wall of the sliding sleeve (601) is sleeved on the outer wall of the slider (602), and the slider (602) moves up and down inside the sliding sleeve (601).

7. The double-link dynamic balancing cutter oscillation mechanism according to claim 6, characterized in that: The cutter connecting assembly (603) includes a double-hole cutter mounting shaft (6032), at least one bearing (6033), and a bearing seat (6034); the outer wall of the bearing seat (6034) is threaded, and the bearing seat (6034) is matched and connected to the slider (602); the outer ring of the double-hole cutter mounting shaft (6032) is fitted with the bearing (6033), and the bearing (6033) is rotatably connected in the bearing seat (6034); the double-hole cutter mounting shaft (6032) has a cutter fixing groove (60321), and there are at least two fixing members (6031) in the cutter fixing groove (60321).

8. The double-link dynamic balancing cutter oscillation mechanism according to claim 7, characterized in that: The bearings (6033) along the axial direction of the double-hole tool shaft (6032) are, in sequence, a first thrust ball bearing (60331), a first deep groove ball bearing (60332), a second deep groove ball bearing (60333), and a second thrust ball bearing (60334).

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