Module capable of switching drive

Abstract

The utility model discloses a module group capable of switching drives. The module group comprises a pedestal; the first driving mechanism is provided with a first gear and a servo motor for driving the first gear to rotate; the matching assembly comprises a second gear, a ball screw fixedly connected with the second gear and a ball nut arranged outside the ball screw in a sleeving mode; the sliding supporting plate is fixedly connected with the ball nut and can slide back and forth relative to the base; the second driving mechanism comprises a base fixedly connected with the base and a driving part capable of moving up and down relative to the base, and the driving part is connected with the first driving mechanism so as to drive the first gear and the second gear to be relatively meshed and separated; the drive switchable module has a servo drive state and a driven drive state, when the drive switchable module is in the servo drive state, the first gear is meshed with the second gear, when the drive switchable module is in the driven drive state, the first gear is separated from the second gear, and when the drive switchable module is switched between the servo drive state and the driven drive state, the drive part moves up and down relative to the base.

Description

Technical Field

[0001] The utility model relates to the technical field of servo motors, and particularly relates to a module with switchable driving. Background Art

[0002] In the existing module with a servo motor, through the precise movement of the servo motor driving component, it is generally applied to a high-precision positioning system. However, when the moving distance is large, this kind of precise movement often takes a long time and has low efficiency, affecting the subsequent work. Summary of the Invention

[0003] The purpose of the utility model is to overcome the defects in the prior art and provide a new module with switchable driving.

[0004] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0005] A module with switchable driving, comprising:

[0006] A base;

[0007] A first driving mechanism, the first driving mechanism having a first gear and a servo motor for driving the first gear to rotate;

[0008] A matching component, the matching component comprising a second gear, a ball screw fixedly connected to the second gear, and a ball nut sleeved outside the ball screw;

[0009] A sliding support plate, the sliding support plate being fixedly connected to the ball nut and capable of sliding back and forth relative to the base;

[0010] A second driving mechanism, the second driving mechanism comprising a base fixedly connected to the base and a driving member capable of moving up and down relative to the base, the driving member being connected to the first driving mechanism to drive the first gear and the second gear to mesh and separate relative to each other;

[0011] The module with switchable driving has a servo driving state and a driven driving state. When in the servo driving state, the first gear and the second gear are meshed. When in the driven driving state, the first gear and the second gear are separated. When switching between the servo driving state and the driven driving state, the driving member moves up and down relative to the base.

[0012] In some embodiments, a sliding groove is provided on one of the base and the first driving mechanism, and a slider is provided on the other and is slidably arranged in the sliding groove in the vertical direction.

[0013] In some embodiments, the first driving mechanism includes a fitting fixedly connected to the servo motor. A clamping groove is formed on the fitting, and the driving member has a clamping block, and the clamping block is in clamping fit with the clamping groove.

[0014] In some embodiments, a fitting gap is provided between the clamping block and the clamping groove in both the front-back direction and the up-down direction.

[0015] In some embodiments, the clamping groove is a U-shaped groove, and the opening of the clamping groove faces forward.

[0016] In some embodiments, the second driving mechanism is a cylinder driving mechanism.

[0017] In some embodiments, a linear guide rail is provided on the base, and a sliding plate slider cooperating with the linear guide rail is provided on the sliding plate.

[0018] In some embodiments, the switchable drive module includes limit switches. The limit switches include a front limit switch provided on the front side of the base and a rear limit switch provided on the rear side of the base. The sliding plate is provided with limit blocks cooperating with the front limit switch and the rear limit switch. The switchable drive module has a front warning position and a rear warning position. When in the front warning position, the limit block contacts the front limit switch, and when in the rear warning position, the limit block contacts the rear limit switch.

[0019] In some embodiments, the limit block has a front mating inclined surface and a rear mating inclined surface. When in the front warning position, the front mating inclined surface contacts the front limit switch, and when in the rear warning position, the rear mating inclined surface contacts the rear limit switch.

[0020] In some embodiments, the switchable drive module includes a mechanical limit fixedly provided on the base. The mechanical limit includes a front mechanical limit and a rear mechanical limit. The front mechanical limit is used to block the sliding plate from further sliding forward relative to the base, and the rear mechanical limit is used to block the sliding plate from further sliding backward relative to the base.

[0021] Due to the application of the above technical solutions, the present utility model has the following advantages compared with the prior art: In the switchable drive module of the present utility model, by setting the second driving mechanism, the first gear and the second gear can be relatively engaged and disengaged, so that the switchable drive module can be switched between the servo drive state and the driven drive state. When the moving distance is large, it can be switched to the driven drive state, and the sliding plate is manually driven to slide relative to the base, thereby saving time and improving efficiency. When the moving distance is short, it can be switched to the servo drive state to improve the moving accuracy of the sliding plate relative to the base. Description of the Drawings

[0022] Figure 1 Schematic three-dimensional view of the switchable drive module in the servo drive state in an embodiment of the present utility model;

[0023] Figure 2 Schematic three-dimensional view of the switchable drive module in the driven drive state in an embodiment of the present utility model;

[0024] Figure 3 Left view of the switchable drive module in an embodiment of the present utility model;

[0025] Figure 4 is Figure 3 Cross-sectional view along the C-C direction in, at this time the switchable drive module is in the servo drive state;

[0026] Figure 5 is Figure 3 Cross-sectional view along the C-C direction in, at this time the switchable drive module is in the driven drive state;

[0027] Figure 6 Bottom view of the switchable drive module in an embodiment of the present utility model;

[0028] The reference numerals in the figure are:

[0029] 11 - Bracket; 12 - Support plate; 13 - Linear guide rail; 14 - Slide block; 2 - Sliding support plate; 21 - Sliding support plate slide block; 22 - Limit block; 221 - Front mating inclined surface; 222 - Rear mating inclined surface; 31 - First gear; 32 - Servo motor; 33 - Fitting; 331 - Chute; 332 - Card slot; 41 - Second gear; 42 - Ball screw; 43 - Ball nut; 51 - Base; 52 - Driving member; 521 - Block; 61 - Rear limit switch; 71 - Front mechanical limit. Detailed Description of the Preferred Embodiments

[0030] The technical solution of the present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0031] In the description of the present utility model, the descriptions of directions such as "front", "rear", "left", "right", "upper", and "lower" involved are as follows: As Figure 3 shown, the left side direction in the figure is "front", the right side direction in the figure is "rear", the upper side direction in the figure is "upper", the lower side direction in the figure is "lower", and the directions perpendicular to the viewing angle in the figure are "left" and "right". The definitions of the above directions are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0032] As Figures 1-6 shown, in some embodiments of the present utility model, the switchable drive module includes: a base, a first drive mechanism, a matching component, a sliding support plate 2, a second drive mechanism, a limit switch, and mechanical limits. The switchable drive module has a servo drive state and a driven drive state.

[0033] The base has two brackets 11 arranged front and back and a support plate 12 arranged above the two brackets 11. Two U-shaped linear guides 13 are respectively arranged on the left and right sides of the support plate 12. Sliding support plate sliders 21 respectively matching with the two linear guides 13 are arranged on the sliding support plate 2. Through the cooperation of the linear guide 13 and the sliding support plate slider 21, the sliding support plate 2 can stably slide relative to the base in the front-back direction.

[0034] The first drive mechanism has a first gear 31 and a servo motor 32 for driving the first gear 31 to rotate. The matching component includes a second gear 41, a ball screw 42 fixedly connected to the second gear 41, and a ball nut 43 sleeved outside the ball screw 42. The ball nut 43 is fixedly connected to the sliding support plate 2. In some embodiments, the radii of the first gear 31 and the second gear 41 are equal, and the rotation axis lines of the first gear 31 and the second gear 41 both extend in the front-back direction. In other embodiments, the first gear 31 and the second gear 41 can also be set to have different radii. Through the meshing cooperation of the first gear 31 and the second gear 41, when the servo motor 32 works, it drives the first gear 31 to rotate, driving the second gear 41 to rotate. The second gear 41 drives the ball screw 42 to rotate, and the ball screw 42 drives the ball nut 43 to move back and forth along the extension direction of the ball screw 42, so that the sliding support plate 2 slides relative to the base in the front-back direction.

[0035] The second drive mechanism includes a base 51 fixedly connected to the base and a driving member 52 that can move up and down relative to the base 51. The driving member 52 is connected to the first drive mechanism to drive the first gear 31 and the second gear 32 to engage and disengage relative to each other. A chute 331 is arranged on one of the base and the first drive mechanism, and a slider 14 that slides up and down in the chute 331 is arranged on the other. By providing the slider 14 and the chute 331, it provides a guiding function for the up and down movement of the first drive mechanism relative to the base, preventing deviation and dislocation and affecting the matching accuracy. As Figures 4-6 shown, in some embodiments, a slider 14 is arranged on the left side of the base support plate 12 of the base. The first drive mechanism includes a fitting 33 fixedly connected to the servo motor 32, and a U-shaped chute 331 is arranged on the fitting 33. In some embodiments, the second drive mechanism is a cylinder drive mechanism.

[0036] The fitting member 33 is also provided with a clamping groove 332, and the driving member 52 has a clamping block 521. The clamping block 521 is in clamping fit with the clamping groove 332. There is a fitting gap between the clamping block 521 and the clamping groove 332 in both the front-rear direction and the up-down direction. By providing the fit between the clamping block 521 and the clamping groove 332, it is allowed that the up-down movement path of the driving member 52 relative to the base 51 and the up-down movement path of the slider 14 relative to the sliding groove 331 do not have to be set completely parallel, that is, a certain error deviation between the movement paths of the two is allowed, avoiding the phenomenon that the slider 14 is jammed in the sliding groove 331 when the driving member 52 drives the first driving mechanism to move in the up-down direction. In some embodiments, the clamping groove 332 is a U-shaped groove, and the opening of the clamping groove 332 faces forward, so as to facilitate assembly.

[0037] The limit switch includes a front limit switch (not shown in the figure) provided on the front side of the base and a rear limit switch 61 provided on the rear side of the base. Specifically, the front limit switch is provided at the front end of the right linear guide rail 13, and the rear limit switch 61 is provided at the rear end of the right linear guide rail 13. The sliding support plate 2 is provided with a limit block 22 that cooperates with the front limit switch and the rear limit switch 61. The limit block 22 has a front mating inclined surface 221 and a rear mating inclined surface 222. The switchable driving module has a front warning position and a rear warning position. When in the front warning position, the front mating inclined surface 221 contacts the front limit switch. When in the rear warning position, the rear mating inclined surface 222 contacts the rear limit switch 61. In some embodiments, when the limit block 22 contacts the front limit switch, the front limit switch closes. When the limit block 22 contacts the rear limit switch 61, the rear limit switch 61 closes, thereby issuing an alarm and the servo motor stops operating, preventing the sliding support plate 2 from detaching from the base.

[0038] The mechanical limit includes a front mechanical limit 71 and a rear mechanical limit (not shown in the figure). The front mechanical limit 71 is used to block the sliding support plate 2 from further sliding forward relative to the base, and the rear mechanical limit is used to block the sliding support plate 2 from further sliding backward relative to the base. The front mechanical limit 71 is fixedly provided in front of the support plate 12, and the rear mechanical limit is fixedly provided behind the support plate 12. In some embodiments, the heights of both the front mechanical limit 71 and the rear mechanical limit are higher than the sliding support plate 2. By providing the mechanical limit, when the switchable driving module is in the driven driving state, the user cannot further slide the sliding support plate 2 forward and backward due to the abutment of the front mechanical limit 71 and the rear mechanical limit against the sliding support plate 2, preventing the sliding support plate 2 from detaching from the base. In other embodiments, a mechanical limit block (not shown in the figure) can also be provided below the sliding support plate 2, and the further forward and backward sliding of the sliding support plate 2 is blocked by the abutment of the mechanical limit block against the mechanical limit.

[0039] When the switchable drive module is in the servo drive state, the first gear 31 meshes with the second gear 32. At this time, the servo motor can drive the sliding carriage 2 to slide back and forth relative to the base, which is suitable for high-precision positioning. When the switchable drive module is in the driven drive state, the first gear 31 is separated from the second gear 32. At this time, the user can directly push the sliding carriage 2 to slide back and forth relative to the base. When converting from the servo drive state to the driven drive state, the driving part 52 in the second drive mechanism moves downward, and the sliding groove 331 slides downward relative to the slider 14. The first drive mechanism also moves downward due to the connection between the driving part 52 and the fitting 33, causing the first gear 31 and the second gear 41 to disengage. When converting from the driven drive state to the servo drive state, the driving part 52 in the second drive mechanism moves upward, and the sliding groove 331 slides upward relative to the slider 14. The first drive mechanism also moves upward due to the connection between the driving part 52 and the fitting 33, causing the first gear 31 and the second gear 32 to mesh. During the meshing process, the first gear 31 can be set to rotate continuously, making the meshing more stable.

[0040] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly. It should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A switchable drive module, characterized in that: include: Base; A first driving mechanism, wherein the first driving mechanism comprises a first gear and a servo motor driving the first gear to rotate; A mating component, the mating component comprising a second gear, a ball screw fixedly connected to the second gear, and a ball nut sleeved outside the ball screw; A sliding support plate, the sliding support plate is fixedly connected to the ball nut and can slide back and forth relative to the base; a second driving mechanism, the second driving mechanism comprising a base fixedly connected to the base and a driving member movable up and down relative to the base, the driving member being connected to the first driving mechanism to drive the first gear to engage with and disengage from the second gear; The switchable drive module has a servo drive state and a slave drive state. When in the servo drive state, the first gear is meshed with the second gear. When in the slave drive state, the first gear is separated from the second gear. When switching between the servo drive state and the slave drive state, the drive member moves up and down relative to the base.

2. The switchable drive module according to claim 1, characterized in that: A slide groove is arranged on one of the base and the first driving mechanism, and a slider which is slidably arranged in the slide groove along the up-down direction is arranged on the other.

3. The switchable drive module according to claim 1, characterized in that: The first driving mechanism comprises a matching piece fixedly connected to the servo motor, the matching piece is provided with a slot, and the driving piece has a block, and the block is engaged with the slot.

4. The switchable drive module according to claim 3, characterized in that: A matching gap is provided between the clamping block and the clamping slot in the front-to-back direction and the up-down direction.

5. The switchable drive module according to claim 3, characterized in that: The card slot is a U-shaped slot, and the card slot opening is arranged forward.

6. The switchable drive module according to claim 1, characterized in that: The second driving mechanism is a cylinder driving mechanism.

7. The switchable drive module according to claim 1, characterized in that: A linear guide rail is arranged on the base, and a sliding support plate slider matched with the linear guide rail is arranged on the sliding support plate.

8. The switchable drive module according to claim 1, characterized in that: The switchably driven module includes a limit switch, and the limit switch includes a front limit switch arranged on the front side of the base and a rear limit switch arranged on the rear side of the base. The sliding tray is provided with a limit block cooperating with the front limit switch and the rear limit switch. The switchably driven module has a front warning position and a rear warning position. When in the front warning position, the limit block contacts the front limit switch, and when in the rear warning position, the limit block contacts the rear limit switch.

9. The switchable drive module according to claim 8, characterized in that: The limit block has a front matching bevel and a rear matching bevel. When in the front warning position, the front matching bevel contacts the front limit switch, and when in the rear warning position, the rear matching bevel contacts the rear limit switch.

10. The switchable drive module according to claim 1, characterized in that: The switchable drive module includes a mechanical limit fixedly arranged on the base, and the mechanical limit includes a front mechanical limit and a rear mechanical limit. The front mechanical limit is used to prevent the sliding tray from sliding further forward relative to the base, and the rear mechanical limit is used to prevent the sliding tray from sliding further backward relative to the base.

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