Adjustable reciprocating structure

Abstract

The invention discloses an adjustable reciprocating structure, which belongs to the field of mechanical transmission structures and comprises a power motor, a fixed seat, a driving disc, an adjusting disc, a sliding rail, an adjusting sliding chute, an adjusting yoke, a reciprocating sliding block, a driving sliding chute, an adjusting structure and a driving yoke. By means of linkage cooperation of the adjusting disc, the sliding rail, the adjusting sliding groove and the adjusting yoke, flexible adjustment of the stroke of the reciprocating sliding block is achieved. When the adjusting structure drives the adjusting disc to rotate, the orientation of the sliding rail is changed, the transverse movement amplitude of the adjusting yoke in the driving sliding groove is continuously changed accordingly, shutdown is not needed, the output stroke length is changed in real time, and meanwhile, the relative movement track of the driving yoke in the adjusting sliding groove is kept unchanged all the time; and the wear between the two is always concentrated in the same area and is kept constant. The defect that local abrasion is aggravated due to the fact that the relative motion trail of a friction pair is changed due to adjustment of an existing adjustable structure is overcome, and the motion precision and the service life of the mechanism in long-term operation are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of mechanical transmission structures, and in particular to an adjustable reciprocating structure. Background Technology

[0002] Reciprocating motion mechanisms are common structures in the field of mechanical transmission, widely used in gearboxes, mechanical stamping, electric saws, machine tools, automated assembly equipment, and other applications. Existing reciprocating motion mechanisms typically employ a combination of a rotary drive element and a guide sliding component to convert rotary motion into linear reciprocating motion.

[0003] However, such traditional structures have inherent drawbacks: their reciprocating stroke is uniquely determined by the geometric parameters of the driving element, and once the structure is finalized, the stroke length remains fixed. Although some existing technologies provide stroke adjustment functions, they often alter the wear balance, easily leading to increased local wear, decreased motion accuracy after long-term operation, and affecting the service life and motion smoothness of the mechanism.

[0004] Application content

[0005] The purpose of this application is to address the problems raised in the background art by designing an adjustable reciprocating structure.

[0006] The technical solution of this application to achieve the above objectives is an adjustable reciprocating structure, including a power motor, a fixed base, a drive disk, an adjustment disk, a slide rail, an adjustment slide groove, an adjustment yoke, a reciprocating slider, a drive slide groove, an adjustment structure, and a drive yoke. The power motor is fixed on the fixed base, and the output end of the power motor is fixed at the center of the drive disk.

[0007] The adjusting disc is rotatably mounted on the fixed base. The two slide rails are located on both sides of the adjusting slide groove and their ends are fixed to the adjusting disc. The ends of the adjusting slide groove are slidably mounted on the two slide rails respectively. The adjusting yoke is fixed at the center position of the outer surface of the adjusting slide groove.

[0008] The reciprocating slider is slidably mounted on the fixed base, and a drive groove is fixedly provided at the center of the reciprocating slider. The adjusting yoke is slidably mounted in the drive groove.

[0009] The adjustment structure is fixed to the outer shell and connected to the adjustment disk, and is used to change the rotation angle of the adjustment disk;

[0010] The drive yoke is located on the drive disk on the side away from the input drive shaft and is fixed at a position off-center from the drive disk. The drive yoke is slidably installed in the adjustment groove.

[0011] Furthermore, the adjustment structure includes a servo motor, an adjustment gear, and a driven gear ring. The output end of the servo motor is fixed at the center of the adjustment gear. The edge of the adjustment disk has a driven gear ring. The adjustment gear meshes with the driven gear ring to drive the adjustment disk to rotate around its rotation center.

[0012] Furthermore, the reciprocating slider is provided with an extraction rack, which is fixed on the reciprocating slider and is used to drive the unidirectional gear to rotate, converting the reciprocating motion into rotational motion.

[0013] Furthermore, the power motor is a dual-axis motor, with the two output shafts of the power motor extending to both sides and each end fixed with a drive disk. Each drive disk corresponds to a drive yoke, an adjustment disk, two slide rails, an adjustment slide groove, an adjustment yoke, and a reciprocating slider and a drive slide groove, forming two sets of symmetrically arranged reciprocating drive structures.

[0014] Furthermore, the drive yokes on the two drive disks have the same eccentricity direction relative to their respective drive disks.

[0015] Furthermore, the drive yokes on the two drive disks are eccentric in opposite directions relative to their respective drive disks.

[0016] Furthermore, the rotation angle range of the adjustment disc is 0° to 90°.

[0017] Furthermore, the fixed base is provided with a linear guide rail, the linear guide rail is fixed on the fixed base, and the reciprocating slider is slidably mounted on the linear guide rail.

[0018] In summary, this application provides an adjustable reciprocating structure with the following advantages: Through its structural design, this device utilizes the linkage of an adjusting disc, slide rail, adjusting groove, and adjusting yoke to achieve flexible adjustment of the reciprocating slider stroke. When the adjusting structure drives the adjusting disc to rotate, the orientation of the slide rail changes, and the lateral movement of the adjusting yoke within the driving groove changes continuously. This allows for real-time adjustment of the output stroke length without disassembling any parts or stopping the machine, effectively solving the problem that traditional fixed-stroke mechanisms are difficult to adapt to various working conditions, and significantly improving the equipment's ease of operation and adaptability to different working conditions.

[0019] Meanwhile, this device, while achieving adjustable stroke, fully considers both the smoothness of motion and the evenness of wear. Regardless of the angle of the adjusting disc or the change in output stroke, the relative movement trajectory of the drive yoke within the adjusting groove remains constant. Driven by the driving disc, the drive yoke performs a fixed circular motion, and its sliding path within the adjusting groove is independent of the groove's extension direction, determined solely by the eccentricity of the driving disc. Therefore, even if the reciprocating slider stroke is adjusted by changing the angle of the adjusting disc, the contact area and relative movement trajectory between the drive yoke and the adjusting groove remain unchanged, and the wear between them remains concentrated in the same area and constant. This characteristic effectively avoids the defects of existing adjustable structures where adjustment alters the relative movement trajectory of the friction pair, leading to increased localized wear, significantly improving the long-term motion accuracy and service life of the mechanism. Compared to existing technologies, this application, while enabling stepless adjustment of the stroke without stopping the machine, resolves the contradiction between adjustment and wear, meeting the stable operation requirements under high-frequency, high-load conditions. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the adjustable reciprocating structure described in this application;

[0021] Figure 2 This is a bottom view of the structure of Embodiment 1 described in this application;

[0022] Figure 3 This is a front structural diagram of Embodiment 1 described in this application;

[0023] Figure 4 This is a cross-sectional three-dimensional structural diagram of Embodiment 1 described in this application;

[0024] Figure 5 This is a front structural diagram of Embodiment 2 described in this application;

[0025] Figure 6 This is a front view of Embodiment 3 described in this application;

[0026] Figure 7 This is a schematic diagram showing the relative positions of the two driving yokes in Embodiment 3 of this application.

[0027] In the diagram, 1. Power motor; 2. Fixed base; 3. Drive disk; 4. Adjustment disk; 5. Slide rail; 6. Adjustment slide groove; 7. Adjustment yoke; 8. Reciprocating slider; 9. Drive slide groove; 10. Adjustment structure; 11. Drive yoke; 12. Extraction rack; 13. Linear guide rail; 101. Servo motor; 102. Adjustment gear; 103. Driven gear ring. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The examples given are only for explaining this application and are not intended to limit the scope of this application.

[0029] Please see Figure 1 As shown, this application provides a technical solution: an adjustable reciprocating structure, including a power motor 1, a fixed base 2, a drive disk 3, an adjustment disk 4, a slide rail 5, an adjustment slide groove 6, an adjustment yoke 7, a reciprocating slider 8, a drive slide groove 9, an adjustment structure 10, and a drive yoke 11. The power motor 1 is fixed on the fixed base 2, and the output end of the power motor 1 is fixed at the center position of the drive disk 3, driving the drive disk 3 to rotate around its central axis.

[0030] The adjusting plate 4 is rotatably mounted on the fixed base 2 and can rotate within a certain angle around its own rotation center. Two parallel slide rails 5 are located on both sides of the adjusting slide groove 6 and their ends are fixed on the adjusting plate 4. The two ends of the adjusting slide groove 6 are slidably mounted on the corresponding slide rails 5, so that the adjusting slide groove 6 can move along the length of the slide rails 5. The adjusting yoke 7 is fixed at the center of the outer surface of the adjusting slide groove 6.

[0031] The reciprocating slider 8 is slidably mounted on the fixed base 2. A drive groove 9 is fixedly provided at the center of the reciprocating slider 8. The adjusting yoke 7 is slidably mounted in the drive groove 9. When the adjusting yoke 7 moves, it can drive the reciprocating slider 8 to perform linear reciprocating motion on the fixed base 2.

[0032] The adjustment structure 10 is fixed on the outer shell and connected to the adjustment disk 4, and is used to change the rotation angle of the adjustment disk 4.

[0033] The drive yoke 11 is located on the drive disk 3 away from the input drive shaft and is fixed at a position off-center from the drive disk 3. The drive yoke 11 is slidably installed in the adjusting slide groove 6. The length of the drive yoke 11 does not exceed the adjusting slide groove 6. When the drive disk 3 rotates, the drive yoke 11 makes a circular motion and drives the adjusting slide groove 6 to slide back and forth on the slide rail 5. Then, through the cooperation of the adjusting yoke 7 and the drive slide groove 9, the reciprocating slider 8 is driven to make a linear reciprocating motion.

[0034] Please see Figure 2 As shown, in the first embodiment of the present invention, the reciprocating slider 8 is provided with an extraction rack 12, which is fixed on the reciprocating slider 8 and is used to drive the unidirectional gear to rotate, thereby converting the reciprocating motion into rotational motion.

[0035] Please see Figure 3 As shown, in the first embodiment of the present invention, the rotation angle range of the adjustment disk 4 is 0° to 90°, and the adjustment disk 4 can cover all the stroke lengths that the reciprocating slider 8 can change by rotating 0° to 90°.

[0036] In the first embodiment of the present invention, a linear guide rail 13 is provided on the fixed base 2. The linear guide rail 13 is fixed on the fixed base 2, and the reciprocating slider 8 is slidably installed on the linear guide rail 13 to ensure the straightness and stability of its movement.

[0037] Please see Figure 4 In the first embodiment of the present invention, the adjustment structure 10 includes a servo motor 101, an adjustment gear 102, and a driven gear ring 103. The output end of the servo motor 101 is fixed at the center of the adjustment gear 102. The edge of the adjustment disk 4 has a driven gear ring 103. The adjustment gear 102 and the driven gear ring 103 are meshed and connected to drive the adjustment disk 4 to rotate around its rotation center. By controlling the rotation of the servo motor 101, the adjustment gear 102 can be precisely driven to rotate the adjustment disk 4 to the required angle using the meshing driven gear ring 103.

[0038] In the implementation of the first embodiment:

[0039] During the normal reciprocating motion process, the power motor 1 is started, and the output shaft of the power motor 1 begins to rotate, driving the drive disk 3, which is fixedly connected to it, to perform uniform circular motion around its central axis. Since the drive yoke 11 is fixedly set at the eccentric position of the drive disk 3, the drive yoke 11 rotates together with the drive disk 3, performing circular motion.

[0040] The drive yoke 11 is simultaneously slidably installed within the adjusting slide 6. When the drive yoke 11 performs circular motion, it slides back and forth within the adjusting slide 6, driving the adjusting slide 6 to perform reciprocating linear motion on the slide rails 5 on both sides. That is, when the drive yoke 11 moves from the highest point to the lowest point, it pushes the adjusting slide 6 to slide along the slide rail 5 to one end; when the drive yoke 11 moves from the lowest point to the highest point, it pulls the adjusting slide 6 to slide along the slide rail 5 to the other end. The direction of movement of the adjusting slide 6 is consistent with the extension direction of the slide rail 5 on which it is installed.

[0041] The adjusting yoke 7 is fixedly positioned at the center of the outer surface of the adjusting slide 6, thus the adjusting yoke 7 reciprocates linearly along with the adjusting slide 6. Simultaneously, the adjusting yoke 7 is slidably mounted within the drive slide 9 on the reciprocating slider 8. When the adjusting yoke 7 reciprocates within the drive slide 9, its lateral movement pushes the side wall of the drive slide 9, thereby causing the entire reciprocating slider 8 to reciprocate linearly on the linear guide rail 13 of the fixed base 2.

[0042] At this point, the rotary motion of the power motor 1 is converted into the linear reciprocating motion of the reciprocating slider 8. The extraction rack 12 on the reciprocating slider 8 reciprocates accordingly, which can be used to drive the external unidirectional gear to rotate, further converting the reciprocating motion into unidirectional rotary motion.

[0043] When it is necessary to change the stroke length of the reciprocating slider 8, the servo motor 101 in the adjustment structure 10 is activated. The output shaft of the servo motor 101 rotates, driving the adjustment gear 102 to rotate. The adjustment gear 102 meshes with the driven gear ring 103 on the edge of the adjustment disk 4, thereby driving the adjustment disk 4 to rotate around its rotation center to the required angle.

[0044] When the adjusting disc 4 rotates, the orientation of the two slide rails 5 fixed on it changes accordingly. Since the two ends of the adjusting slide 6 are slidably mounted on the two slide rails 5 respectively, the overall posture and direction of movement of the adjusting slide 6 also change accordingly.

[0045] The principle of stroke adjustment is as follows: when the adjusting disc 4 is at different angles, the projection component of the circular motion of the driving yoke 11 in the extension direction of the adjusting slide 6 changes. Specifically, when the adjusting disc 4 rotates, the angle between the adjusting slide 6 and the horizontal plane changes, causing the adjusting yoke 7 to change its horizontal movement length (i.e., the extension direction of the driving slide 9). The horizontal movement length of the adjusting yoke 7 directly determines the stroke length of the reciprocating slider 8—the greater the horizontal movement distance of the adjusting yoke 7, the longer the stroke of the reciprocating slider 8; conversely, the shorter the stroke. By controlling the rotation angle of the adjusting disc 4 within the range of 0° to 90°, continuous stepless adjustment of the stroke of the reciprocating slider 8 can be achieved.

[0046] Please see Figure 5 As shown, in the second embodiment of the present invention, the difference from the first embodiment is that the power motor 1 is a dual-axis motor. The two output shafts of the power motor 1 extend to both sides and each end is fixed with a drive disk 3. Each drive disk 3 corresponds to a drive yoke 11, an adjustment disk 4, two slide rails 5, an adjustment slide groove 6, an adjustment yoke 7, and a reciprocating slider 8 and a drive slide groove 9, forming two sets of symmetrically arranged reciprocating drive structures.

[0047] In the second embodiment of the present invention, the drive yokes 11 on the two drive disks 3 have the same eccentricity direction relative to their respective drive disks 3.

[0048] In the implementation of the second embodiment: during the normal reciprocating motion process, the power motor 1, which is a dual-axis motor, is started. The two output shafts of the dual-axis motor extend to both sides and rotate synchronously. The two output shafts drive the drive disks 3 at their respective ends to rotate around their respective central axes.

[0049] Since the two drive yokes 11 are eccentric in the same direction, the movement directions of the two adjusting slides 6 are always consistent, and the movement directions of the two adjusting yokes 7 are also always consistent, which ultimately results in the two reciprocating sliders 8 having the same movement direction at the same time - when the left reciprocating slider 8 moves to the right, the right reciprocating slider 8 also moves to the right; when the left reciprocating slider 8 moves to the left, the right reciprocating slider 8 also moves to the left.

[0050] When the stroke needs to be adjusted, the two symmetrically arranged reciprocating drive structures are controlled simultaneously by one set of adjustment structure 10. When the servo motor 101 is working, it drives the two adjustment disks 4 to rotate at the same angle by adjusting the gear 102 and the driven gear ring 103 on the adjustment disk 4.

[0051] Please see Figure 6-7 As shown, in the third embodiment of the present invention, the difference from the second embodiment is that the drive yokes 11 on the two drive disks 3 have opposite eccentric directions relative to their respective drive disks 3.

[0052] In the implementation of the third embodiment: during the normal reciprocating motion process, the power motor 1, which is a dual-axis motor, is started, and the two output shafts rotate synchronously, driving the drive disks 3 on the left and right sides to rotate respectively. Since the drive yokes 11 on the two drive disks 3 have opposite eccentric directions relative to their respective drive disks 3, the motion phases of the two drive yokes 11 differ by 180°.

[0053] When the left reciprocating drive structure is running: the left drive yoke 11 rotates with the left drive disk 3, driving the left adjustment slide 6 to make reciprocating linear motion on the left slide rail 5, and then driving the left reciprocating slider 8 to move through the left adjustment yoke 7.

[0054] The movement process of the right reciprocating drive structure is similar to that of the left side. However, since the eccentric direction of the right drive yoke 11 is opposite to that of the left side, when the left drive yoke 11 reaches its highest point, the right drive yoke 11 reaches its lowest point. This causes the movement direction of the right adjusting slide 6 to be opposite to that of the left adjusting slide 6. That is, when the left adjusting slide 6 slides upward, the right adjusting slide 6 slides downward.

[0055] Correspondingly, the left and right adjusting yokes 7 move in opposite directions, ultimately causing the two reciprocating sliders 8 to move in completely opposite directions: when the left reciprocating slider 8 moves to the right, the right reciprocating slider 8 moves to the left; when the left reciprocating slider 8 moves to the left, the right reciprocating slider 8 moves to the right. The two reciprocating sliders 8 form opposing reciprocating motions.

[0056] The embodiments of this application have been described in detail above, but the content described is only a preferred embodiment of this application and should not be considered as limiting the scope of this application. All equivalent changes and improvements made in accordance with the scope of this application should still fall within the patent coverage of this application.

Claims

1. An adjustable reciprocating structure, comprising a power motor (1), a fixed base (2), a drive disc (3), an adjustment disc (4), a slide rail (5), an adjustment groove (6), an adjustment yoke (7), a reciprocating slider (8), a drive groove (9), an adjustment structure (10), and a drive yoke (11), characterized in that, The power motor (1) is fixed on the fixed base (2), and the output end of the power motor (1) is fixed at the center of the drive disk (3); The adjusting disc (4) is rotatably mounted on the fixed base (2). The two slide rails (5) are located on both sides of the adjusting slide groove (6) and their ends are fixed on the adjusting disc (4). The ends of the adjusting slide groove (6) are slidably mounted on the two slide rails (5). The adjusting yoke (7) is fixed at the center of the outer surface of the adjusting slide groove (6). The reciprocating slider (8) is slidably mounted on the fixed base (2), and a drive groove (9) is fixedly provided at the center of the reciprocating slider (8). The adjusting yoke (7) is slidably mounted in the drive groove (9). The adjustment structure (10) is fixed on the outer shell and connected to the adjustment disk (4) for changing the rotation angle of the adjustment disk (4); The drive yoke (11) is located on the drive disk (3) away from the input drive shaft and is fixed at a position off-center from the drive disk (3). The drive yoke (11) is slidably installed in the adjustment groove (6).

2. The adjustable reciprocating structure according to claim 1, characterized in that, The adjustment structure (10) includes a servo motor (101), an adjustment gear (102), and a driven gear ring (103). The output end of the servo motor (101) is fixed at the center of the adjustment gear (102). The edge of the adjustment disk (4) has a driven gear ring (103). The adjustment gear (102) and the driven gear ring (103) are meshed and connected to drive the adjustment disk (4) to rotate around its rotation center.

3. The adjustable reciprocating structure according to claim 1, characterized in that, The reciprocating slider (8) is provided with an extraction rack (12), which is fixed on the reciprocating slider (8) and is used to drive the unidirectional gear to rotate, converting the reciprocating motion into rotational motion.

4. The adjustable reciprocating structure according to claim 1, characterized in that, The power motor (1) is a dual-axis motor. The two output shafts of the power motor (1) extend to both sides and each end is fixed with a drive disk (3). Each drive disk (3) corresponds to a drive yoke (11), an adjustment disk (4), two slide rails (5), an adjustment slide groove (6), an adjustment yoke (7), a reciprocating slider (8), and a drive slide groove (9), forming two sets of symmetrically arranged reciprocating drive structures.

5. An adjustable reciprocating structure according to claim 4, characterized in that, The drive yokes (11) on the two drive disks (3) have the same eccentricity direction relative to their respective drive disks (3).

6. The adjustable reciprocating structure according to claim 4, characterized in that, The drive yokes (11) on the two drive disks (3) are opposite in direction to their respective drive disks (3).

7. The adjustable reciprocating structure according to claim 1, characterized in that, The rotation angle range of the adjustment disc (4) is 0° to 90°.

8. The adjustable reciprocating structure according to claim 1, characterized in that, The fixed base (2) is provided with a linear guide rail (13), the linear guide rail (13) is fixed on the fixed base (2), and the reciprocating slider (8) is slidably installed on the linear guide rail (13).

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