Multi-moving element direct drive transmission system

Abstract

The present invention provides a multi-mover direct drive transmission system. The present invention includes a stator unit, a guide rail, a mover unit and a controller, the stator unit includes a stator, a winding, a photoelectric switch, a read head and a driver, the mover unit includes a mover, a magnet steel, two stoppers and a scale, the mover is slidably connected to the guide rail, the stoppers are installed opposite the photoelectric switch, the positions where the two stoppers are located in the mover correspond to the corresponding two ends of the scale, the stoppers pass through and block the photoelectric switch, so that the photoelectric switch generates a zero point signal and transmits the zero point signal to the driver, the scale is installed opposite the read head, so that the read head reads the scale information in real time and generates a scale signal and transmits it to the driver, the controller obtains the scale signal and the two zero point signals by the driver, and positions the position of the mover unit in real time during its movement. Compared with the prior art, the multi-mover direct drive transmission system of the present invention has a simple structure, accurate positioning and easy use.

Description

[Technical field]

[0001] The present invention relates to the field of electroacoustic conversion, and more particularly to a multi-mover direct drive transmission system applied in portable electronic products. [Background technology]

[0002] As the application of assembly line motion becomes more and more important, the multi-mover direct drive transmission system has become an important production equipment in the production assembly line.

[0003] The multi-mover direct drive transmission system of the prior art includes a stator in which a plurality of segments are sequentially connected and integrated, a plurality of movers attached to the stator, and a plurality of drivers, the stator includes a coil winding, the mover includes a magnet steel, the magnet steel is installed opposite to the coil winding and spaced apart, the coil winding drives the magnet steel to move the mover, and the driver is electrically connected to the coil winding to control the coil winding to drive the magnet steel. In the feedback control, the multi-mover direct drive transmission system described in the prior art generally adopts an absolute feedback method, and the feedback unit is generally divided into two, one is an absolute raster scale or magnetic scale, and the other is a linear Hall element and a scale sensor.

[0004] However, in the prior art, the feedback control method of the absolute raster scale or magnetic scale has high positioning accuracy but high cost. The feedback control method of the linear Hall element and scale sensor has low cost but low position detection accuracy. Therefore, the technical problem to be solved is how to maintain the high positioning accuracy of the feedback control method while at the same time making the feedback control method simple in structure, low in cost and easy to use.

[0005] Therefore, there is a need to provide a novel multi-mover direct drive transmission system to solve the above technical problems. Summary of the Invention [Problem to be solved by the invention]

[0006] SUMMARY OF THE PRESENT EMBODIMENT In order to overcome the above technical problems, the present invention aims to provide a multi-mover direct drive transmission system that is simple in structure, accurate in positioning, and easy to use. [Means for solving the problem]

[0007] In order to achieve the above object, an embodiment of the present invention provides a multi-mover direct drive transmission system, the multi-mover direct drive transmission system including: a stator unit in which a plurality of segments are sequentially connected and integrated; a guide rail attached to the stator unit; a plurality of mover units slidably connected to the guide rail and forming a driving force with the stator unit; and a controller used to control the movement of the mover unit, each of the stator units including a stator, a winding, a photoelectric switch and a read head, each of which is fixed to the stator, and a driver electrically connected to the controller, the guide rail is fixed to the stator, the driver is electrically connected to the winding, the photoelectric switch and the read head, each of the mover units includes a mover, a magnet steel, a stopper and a scale, each of which is fixed to the mover, and the scale is in a direction of movement of the mover unit. the stopper is disposed opposite the photoelectric switch, the number of the stoppers is two, and the positions where the two stoppers are located in the mover correspond to both ends of the scale along the moving direction of the mover unit, and each of the stoppers is used to pass through and block the photoelectric switch, so that the photoelectric switch generates a zero point signal and transmits the zero point signal to the driver; the scale is disposed opposite the read head, and the read head is further used to read information of the scale in real time, generate a scale signal based on the information, and transmit the scale signal to the driver; and the controller obtains the scale signal and the two zero point signals by the driver, and determines the position of the mover unit during its movement in real time.

[0008] More preferably, the stoppers include a first stopper and a second stopper, the first stopper being disposed opposite a start position where the scale moves along the movable unit so that when the first stopper passes through and blocks the photoelectric switch, the photoelectric switch generates the first zero point signal, and the second stopper being disposed opposite an end position where the scale moves along the movable unit so that when the second stopper passes through and blocks the photoelectric switch, the driver generates a second zero point signal.

[0009] More preferably, the start position and the end position are provided at both ends of the scale in the moving direction of the mover unit.

[0010] More preferably, said scale is a raster scale or a magnetic scale.

[0011] More preferably, there are two guide rails 2, the two guide rails are parallel and spaced apart in the extension direction of the stator unit, the two guide rails are located on the same horizontal plane, and the windings, the photoelectric switch, the read head, the magnetic steel, the stopper and the scale are all located between the two guide rails.

[0012] More preferably, the photoelectric switch and the read head are both located on the same side of the windings, and the stopper and the scale are both located on the same side of the magnet steel.

[0013] More preferably, the photoelectric switch is spaced apart between the winding and the read head, and the stopper is spaced apart between the magnet steel and the scale.

[0014] More preferably, the stator is made of a magnetically permeable body, and the mover is made of a magnetically permeable body.

[0015] More preferably, the magnet steel is provided in a plurality of pieces and the plurality of magnet steel pieces are arranged in a stacked manner in the direction of movement of the movable unit, and the windings are provided in a plurality of pieces and the plurality of windings are arranged in a stacked manner in the direction of movement of the movable unit.

[0016] More preferably, the driver is electrically connected to the winding, the photoelectric switch and the read head via cables, respectively. Effect of the Invention

[0017] Compared with the prior art, in the multi-mover direct drive transmission system of the present invention, a photoelectric switch and a read head are provided on a stator unit, two stoppers and a scale extending along the moving direction of the mover unit are provided on a mover unit, the scale is installed opposite to the read head, the stopper is installed opposite to the photoelectric switch, and the two stoppers correspond to both ends of the scale. With this structure, each stopper is used to pass and block the photoelectric switch, the photoelectric switch generates a zero-point signal and sends the zero-point signal to the driver, the read head reads the information of the scale in real time, generates a scale signal according to the information and sends it to the driver, so that the controller obtains the scale signal and the two zero-point signals through the driver, and positions the moving position of the mover unit in real time. This structure utilizes the scale and the read head as an incremental feedback device and a position feedback unit, and further utilizes the two stoppers and the photoelectric switch to achieve the feedback position effect of the absolute position method in the incremental position method, thereby ensuring high recognized position accuracy of the mover unit, and the multi-mover direct drive transmission system of the present invention has a simple structure, is easy to use, and can reduce costs. [Brief description of the drawings]

[0018] In order to more clearly describe the technical solutions in the embodiments of the present invention, the drawings necessary for describing the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without inventive work, where [Figure 1] FIG. 1 is a perspective view of a multi-mover direct drive transmission system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an exploded perspective view of a portion of a multi-mover direct drive transmission system according to an embodiment of the present invention. [Diagram 3] FIG. 3 is a diagram showing the configuration of the multi-mover direct drive transmission system according to the embodiment of the present invention from another perspective. [Figure 4] FIG. 4 is a perspective view of a mover unit of a multi-mover direct drive transmission system according to an embodiment of the present invention. [Diagram 5] FIG. 5 is a diagram showing an application relationship configuration of a multi-mover direct drive transmission system according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] The technical ideas in the embodiments of the present invention will be clearly and completely described below in combination with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and are not all of the embodiments. Based on the embodiments of the present invention, all other embodiments that a person skilled in the art can obtain without making inventive efforts are all included in the scope of protection of the present invention.

[0020] In an embodiment of the present invention, a multi-mover direct drive transmission system 100 is provided.

[0021] 1 to 5, specifically, the multi-mover direct drive transmission system 100 includes a stator unit 1, a guide rail 2, a mover unit 3, and a controller 4.

[0022] The stator unit 1 is formed by sequentially connecting a plurality of segments to form an integrated unit.

[0023] Each of the stator units 1 includes a stator 11 , a winding 12 , a photoelectric switch 13 , a read head 14 , and a driver 15 .

[0024] The stator 11 is made of a magnetically permeable material.

[0025] The winding 12 is fixed to the stator 11. The winding 12 is located on the side of the stator 11 closer to the mover unit 3, that is, the winding 12 and the guide rail 2 are located on the same side of the stator 11.

[0026] In this embodiment, there are a plurality of the windings 12, and the plurality of the windings 12 are arranged in a stacked manner in the moving direction of the mover unit 3. The structure in which the plurality of the windings 12 are arranged is convenient for assembly and manufacturing, and can save costs.

[0027] The photoelectric switch 13 is fixed to the stator 11. The photoelectric switch 13 is disposed between the winding 12 and the read head 14 with a gap therebetween.

[0028] The read head 14 is fixed to the stator 11 .

[0029] The photoelectric switch 13 and the read head 14 are both located on the same side of the winding 12 .

[0030] The driver 15 is electrically connected to the controller 4. In this embodiment, the driver 15 is used to be data-connected to the controller 4.

[0031] The driver 15 is electrically connected to the winding 12, the photoelectric switch 13, and the read head 14. In this embodiment, the driver 15 is electrically connected to the winding 12, the photoelectric switch 13, and the read head 14 through cables. The electrical connection through cables can save costs compared to wiring on a PCB board.

[0032] The guide rail 2 is fixed to the stator unit 1. In this embodiment, the guide rail 2 is provided so as to be attached to the stator unit 1. Specifically, the guide rail 2 is provided so as to be attached to the stator 11.

[0033] In this embodiment, there are two guide rails 2. The two guide rails 2 are installed parallel to and spaced apart in the extension direction of the stator unit 1. The two guide rails 2 are located on the same horizontal plane, and the two guide rails 2 help the mover unit 3 to move stably.

[0034] The mover unit 3 is slidably connected to the guide rail 2 .

[0035] There are a plurality of the mover units 3. The plurality of the mover units 3 is advantageous in improving the usage efficiency of the multi-mover direct drive transmission system 100. Of course, this is not limited to the above, and only one mover unit 3 may be provided.

[0036] Specifically, each of the mover units 3 includes a mover 31, a magnet steel 32, a stopper 33, and a scale .

[0037] The mover 31 is connected to the guide rail 2 so as to be capable of sliding.

[0038] The mover 31 is made of a magnetically permeable material.

[0039] The magnet steel 32 is fixed to the mover 31. The magnet steel 32 is disposed opposite the winding 12 with a gap therebetween.

[0040] The mover unit 3 and the stator unit 1 generate a driving force together. Specifically, the winding 12 drives the magnet steel 32 to move the mover unit 3 along the guide rail 2.

[0041] In this embodiment, there are a plurality of the magnet steels 32, and the plurality of the magnet steels 32 are arranged in a stacked manner in the moving direction of the mover unit 3. The structure in which the plurality of the magnet steels 32 are arranged is convenient for assembly and manufacturing, and can save costs.

[0042] The stopper 33 is fixed to the mover 31. The stopper 33 and the scale 34 are both located on the same side of the magnet steel 32. Specifically, the stopper 33 is installed between the magnet steel 32 and the scale 34 with a gap therebetween.

[0043] The stopper 33 is disposed opposite to the photoelectric switch 13. The stopper 33 is used to trigger the photoelectric switch 13 to generate a zero point signal, thereby meeting the requirement of recognizing the motion zero point in different moving directions of the movable unit 3. That is, the stopper 33 can trigger the photoelectric switch 13 to recognize the motion zero point of the movable unit 3 moving in the forward or reverse direction.

[0044] There are two stoppers 33, and the positions of the two stoppers 33 in the mover 31 correspond to both ends of the scale 34 along the moving direction of the mover unit 3. Each stopper 33 is used to pass and block the photoelectric switch 13, so that the photoelectric switch 13 generates a zero-point signal and transmits the zero-point signal to the driver 15. With this structure, when the stopper 33 passes and blocks the photoelectric switch 13, the driver 15 can read the zero-point signal quickly and with high accuracy, and the mover unit 3 can be positioned quickly and with high accuracy.

[0045] In this embodiment, the stopper 33 includes a first stopper 331 and a second stopper 332. The first stopper 331 is disposed opposite to a start position where the scale 34 moves along the movable unit 3 so that the photoelectric switch 13 generates the first zero point signal when the first stopper 331 passes through and blocks the photoelectric switch 13. The second stopper 332 is disposed opposite to an end position where the scale 34 moves along the movable unit 3 so that the driver 15 generates the second zero point signal when the second stopper 332 passes through and blocks the photoelectric switch 13.

[0046] Here, the start position and the end position are provided at both ends of the scale 34 in the moving direction of the movable unit 3, respectively.

[0047] The scale 34 is fixed to the mover 31. The scale 34 extends along the direction in which the mover unit 3 moves.

[0048] The winding 12 , the photoelectric switch 13 , the read head 14 , the magnet steel 32 , the stopper 33 and the scale 34 are all located between the two guide rails 2 .

[0049] The scale 34 is an incremental scale. Specifically, the scale 34 is a raster scale or a magnetic scale. In this embodiment, the scale 34 is a raster scale.

[0050] The scale 34 is disposed opposite to the read head 14. The read head 14 is further used to read information of the scale 34 in real time, generate a scale signal based on the information, and send it to the driver 15. In this structure, the scale 34 and the read head 14 serve as an incremental feedback device and a position feedback unit, and further use the two stoppers 33 and the photoelectric switch 13 to achieve a feedback position effect in an absolute position manner in an incremental position, thereby maintaining high position accuracy, and the multi-mover direct drive transmission system 100 of the present invention has a simple structure, is easy to use, and reduces costs.

[0051] The controller 4 is used to control the movement of the movable unit 3. Here, the drivers 15 of the multiple stator units 1 perform systematic motion control by the same controller 4. Specifically, the controller 4 obtains the scale signal and the two zero point signals through the drivers 15, and positions the movable unit 3 in real time during its movement.

[0052] In this embodiment, the operation process of the multi-mover direct drive transmission system 100 of the present invention is as follows.

[0053] The multi-mover direct drive transmission system 100 initiates a system reset, i.e., the system needs to be reset as a whole before it operates. After the reset is initiated, all the mover units 3 move in a certain direction, and the read head 14 reads the information of the scale 34 in real time. When one of the stoppers 33 corresponding to the scale 34 of the mover unit 3 blocks the photoelectric switch 13, the driver 15 receives a level signal and records one of the zero-point signals. When one of the drivers 15 recognizes two of the zero-point signals and the feedback distance between the two zero-point signals reaches a certain set value, the controller 4 determines that the reset of the mover unit 3 is completed, and at this time, the feedback position of the read head 14 of the next stator unit 1 becomes the precise position of the mover unit 3.

[0054] Then, an overall position coordinate system is constructed by the position feedback of the movable unit 3. Specifically, the read head 14 attached to each stator unit 1 feeds back the position information of the corresponding movable unit 3 in real time based on the zero point recognized by the driver 15, and transmits the position information during operation to the controller 4 to perform drive control of the movable unit 3.

[0055] In addition, the driving control of the movable unit 3 by the controller 4 can adopt driving methods and algorithms commonly used in the art, and the specific driving methods and algorithms can be selected according to actual design needs, and there is no need to describe them in detail here.

[0056] Therefore, according to the working process of the multi-mover direct drive transmission system 100 of the present invention, it is found that the multi-mover direct drive transmission system 100 has high positioning accuracy, simple structure, easy to use, and low cost.

[0057] Compared with the prior art, in the multi-mover direct drive transmission system of the present invention, a photoelectric switch and a read head are provided on a stator unit, two stoppers and a scale extending along the moving direction of the mover unit are provided on a mover unit, the scale is installed opposite to the read head, the stopper is installed opposite to the photoelectric switch, and the two stoppers correspond to both ends of the scale. With this structure, each stopper is used to pass and block the photoelectric switch, the photoelectric switch generates a zero-point signal and sends the zero-point signal to the driver, the read head reads the information of the scale in real time, generates a scale signal according to the information and sends it to the driver, so that the controller obtains the scale signal and the two zero-point signals through the driver, and positions the moving position of the mover unit in real time. This structure utilizes the scale and the read head as an incremental feedback device and a position feedback unit, and further utilizes the two stoppers and the photoelectric switch to achieve the feedback position effect of the absolute position method in the incremental position method, thereby ensuring high recognized position accuracy of the mover unit, and the multi-mover direct drive transmission system of the present invention has a simple structure, is easy to use, and can reduce costs.

[0058] The above are only preferred embodiments of the present invention, and those skilled in the art can make improvements thereto without departing from the inventive concept of the present invention, all of which shall fall within the scope of protection of the present invention.

Claims

1. A multi-mover direct drive transmission system including: a stator unit in which a plurality of segments are sequentially connected and integrated; a guide rail attached to the stator unit; a plurality of mover units slidably connected to the guide rail and forming a driving force with the stator unit; and a controller used to control movement of the mover units, Each of the stator units includes a stator, a winding, a photoelectric switch, and a read head, each of which is fixed to the stator, and a driver electrically connected to the controller, the guide rail being fixed to the stator, and the driver being electrically connected to the winding, the photoelectric switch, and the read head, respectively; Each of the movable units includes a movable member, a magnet steel, a stopper, and a scale fixed to the movable member, the scale extending along the moving direction of the movable member unit, the movable member slidably connected to the guide rail, the magnet steel facing the winding and spaced apart from it, the winding drives the magnet steel to move the movable member unit along the guide rail, the stopper is disposed opposite to the photoelectric switch, there are two stoppers, the positions of the two stoppers in the movable piece correspond to both ends of the scale along the moving direction of the movable piece unit, and each stopper is used to pass through and block the photoelectric switch, so that the photoelectric switch generates a zero-point signal and transmits the zero-point signal to the driver; the scale is disposed opposite to the read head, and the read head is further used to read information of the scale in real time, generate a scale signal based on the information, and transmit the scale signal to the driver; The controller obtains the scale signal and the two zero point signals by the driver, and determines the position of the movable unit during movement in real time. A multi-mover direct drive transmission system.

2. The stopper includes a first stopper and a second stopper, the first stopper and the second stopper are provided at both ends of the scale in a moving direction of the movable unit, When the first stopper passes through and blocks the photoelectric switch, the photoelectric switch generates a first of the zero point signals, and when the second stopper passes through and blocks the photoelectric switch, the driver generates a second of the zero point signals.

2. The multi-mover direct drive transmission system according to claim 1 .

3. The scale is a raster scale or a magnetic scale.

2. The multi-mover direct drive transmission system according to claim 1 .

4. There are two guide rails 2, the two guide rails are parallel to each other in the extension direction of the stator unit and are spaced apart from each other, the two guide rails are located on the same horizontal plane, and the windings, the photoelectric switch, the read head, the magnet steel, the stopper, and the scale are all located between the two guide rails.

2. The multi-mover direct drive transmission system according to claim 1 .

5. the photoelectric switch and the read head are both located on the same side of the winding, and the stopper and the scale are both located on the same side of the magnet steel; 2. The multi-mover direct drive transmission system according to claim 1 .

6. the photoelectric switch is disposed between the winding and the read head with a gap therebetween, and the stopper is disposed between the magnet steel and the scale with a gap therebetween; 6. The multi-mover direct drive transmission system according to claim 5.

7. The stator is made of a magnetic permeable material, and the mover is made of a magnetic permeable material.

2. The multi-mover direct drive transmission system according to claim 1 .

8. the magnet steel is provided in a plurality of pieces, the plurality of magnet steel pieces being arranged in a sequential stacking manner along the moving direction of the movable unit; the winding is provided in a plurality of pieces, the plurality of windings being arranged in a sequential stacking manner along the moving direction of the movable unit; 2. The multi-mover direct drive transmission system according to claim 1 .

9. the driver is electrically connected to the winding, the photoelectric switch and the read head via cables, 2. The multi-mover direct drive transmission system according to claim 1 .

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