Dual-drive linear motor movement mechanism

Abstract

The utility model discloses a dual-drive linear motor motion mechanism, which comprises two groups of Y-axis motion mechanisms arranged in parallel and an X-axis motion mechanism orthogonally arranged above the Y-axis motion mechanisms, the X-axis motion mechanism comprises an X-axis cross beam and an X linear motor drive assembly, the Y-axis motion mechanism comprises a left Y-axis motion mechanism, a right Y-axis motion mechanism and a right linear motor drive assembly, the left Y-axis movement mechanism comprises a left Y-axis cross beam and a left Y linear motor driving assembly, and the right Y-axis movement mechanism comprises a right Y-axis cross beam and a right Y linear motor driving assembly; the X-axis cross beams are arranged above the left Y-axis cross beam and the right Y-axis cross beam in a striding mode and connected with the left Y linear motor driving assembly and the right Y linear motor driving assembly correspondingly, and therefore the X-axis cross beams can move in the Y-axis direction. The speed of driving the X sliding block connecting block is greatly increased, errors generated by movement are small, and conveying precision is high.

Description

Technical Field

[0001] The utility model relates to the field of chip placement machines, in particular to a dual-drive linear motor motion mechanism. Background Art

[0002] Existing placement machines are technologically mature and capable of performing various automated placement tasks. However, these machines all utilize a screw-guided transmission system. This transmission system has the following drawbacks: 1. Existing transmission systems all utilize a single Y-axis for power drive. This system is prone to the occurrence of active and passive Y-axes, which are subject to different forces and power. This can easily lead to motion deviation between the two axes, hindering precise PCB placement. Furthermore, the different forces on the two axes can lead to different wear on the two axes, significantly shortening the service life of one axis. 2. In existing screw-guided transmission systems, there is a gap between the screw and the nut, which affects the precision of the placement machine's head movement.

[0003] Our company is eager to develop a motion mechanism with higher walking precision, faster speed and higher efficiency. Summary of the Invention

[0004] In order to solve the above problems, the utility model provides a dual-drive linear motor motion mechanism.

[0005] The technical solution of the present utility model is: a dual-drive linear motor motion mechanism, including two groups of parallel Y-axis motion mechanisms and an X-axis motion mechanism orthogonal to the Y-axis motion mechanism, the X-axis motion mechanism including an X-axis beam and an X-linear motor drive assembly, the Y-axis motion mechanism including a left Y-axis motion mechanism, the left Y-axis motion mechanism including a left Y-axis beam and a left Y-linear motor drive assembly, and the right Y-axis motion mechanism including a right Y-axis beam and a right Y-linear motor drive assembly; the two ends of the X-axis beam are arranged above the left Y-axis beam and the right Y-axis beam, and are respectively connected to the left Y-linear motor drive assembly and the right Y-linear motor drive assembly, thereby realizing the movement of the X-axis beam along the Y-axis direction.

[0006] Preferably, the X-axis linear motor drive assembly includes an X-stator, an X-moving element, an X-linear track, and an X-slider connecting block. The X-stator is fixed above the X-axis crossbeam and arranged along the X-axis direction. The X-moving element is movable back and forth and is arranged above the X-stator. The X-linear tracks are respectively arranged on the front and rear sides of the X-stator, and the direction is consistent with the setting direction of the X-stator. The X-slider connecting block is arranged above the X-stator, the middle part of the X-slider connecting block is fixedly connected to the X-moving element, and the front and rear sides of the X-slider connecting block are slidably connected to the X-linear track through sliders; the left Y-linear motor drive assembly includes a left Y-stator, a left Y-moving element, and a left Y-linear track. The left Y-stator is fixed above the left Y-axis crossbeam and arranged along the Y-axis direction. The left Y-moving element is movable back and forth and is arranged above the left Y-stator. The left Y The linear tracks are respectively arranged on the left and right sides of the left Y stator, and the direction is consistent with the setting direction of the left Y stator. The left end of the X-axis beam is arranged above the left Y stator and fixedly connected to the left Y mover. The left end of the X-axis beam is also slidably connected to the left Y linear track through a slider; the right Y linear motor drive assembly includes a right Y stator, a right Y mover, and a right Y linear track. The right Y stator is fixed above the right Y-axis beam and arranged along the Y-axis direction. The right Y mover can move back and forth and is arranged above the right Y stator. The right Y linear track is respectively arranged on the left and right sides of the right Y stator, and the direction is consistent with the setting direction of the right Y stator. The right end of the X-axis beam is arranged above the right Y stator and fixedly connected to the right Y mover. The right end of the X-axis beam is also slidably connected to the right Y linear track through a slider.

[0007] As a further preferred embodiment, a magnetic scale mounting position is provided on the side of the X-axis crossbeam, the left Y-axis crossbeam and the right Y-axis crossbeam, a magnetic scale is provided in the magnetic scale mounting position, and a read head bracket mounting position and a read head bracket are provided on both ends of the X-axis crossbeam and the X slider connecting block. One end of the read head bracket is provided on the read head bracket mounting position, and the other end extends downward and is provided with a magnetic scale sensor, which is directly opposite to the magnetic scale.

[0008] As a further preferred embodiment, an X-reset photoelectric sensor is provided above the X-axis crossbeam at the right end of the X-linear track, and an X-reset photoelectric baffle is provided on the X-slider connecting block at a position corresponding to the X-reset photoelectric sensor.

[0009] As a further preferred embodiment, a Y reset photoelectric sensor is provided at the end of the right Y-axis crossbeam, and a Y reset photoelectric baffle is provided below the X slider connecting block at a position corresponding to the Y reset photoelectric sensor.

[0010] As a further preferred embodiment, both ends of the X linear track, the left Y linear track, and the right Y linear track are respectively provided with silicone blocks.

[0011] As a further preferred embodiment, a left Y-moving sub-junction box and a right Y-moving sub-junction box are respectively provided above the left and right ends of the X-axis crossbeam.

[0012] Preferably, equal height parts are provided below the left Y-axis crossbeam and below the right Y-axis crossbeam.

[0013] The beneficial effects of this utility model are as follows: the utility model uses a linear motor to drive the X-slide connecting block to move, greatly increasing the travel speed. The linear motor movement produces small errors and high transmission accuracy. The dual drive form ensures dynamic balance on both Y axes, improves the precision of the placement machine head movement, and extends the service life of the equipment.

[0014] The utility model is also provided with a magnetic scale sensing mechanism to provide timely feedback on the travel positions of the X-axis and Y-axis of the utility model, and a photoelectric sensing mechanism is provided to enable the X-axis crossbeam and the X-slider connecting block to reset after the travel triggers the photoelectric sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model observed from the left front.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model observed from the right rear.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model observed from the left rear and lower perspective.

[0018] Figure 4 It is a top view of the present utility model.

[0019] Description of labels:

[0020] 11: Left Y-axis crossbeam; 12: Left Y-stator; 13: Left Y-motor junction box; 14: Left Y-motor; 15: Left Y-linear track;

[0021] 21: Right Y stator; 22: Right Y mover junction box; 23: Right Y mover; 24: Right Y axis crossbeam; 25: Y reset photoelectric sensor; 26: Y reset photoelectric baffle; 27: Right Y linear track;

[0022] 31: X stator; 32: X-axis crossbeam; 33: X mover; 34: X slider connection block; 35: X reset photoelectric sensor; 36: X reset photoelectric baffle; 37: X linear track;

[0023] 41: Read head bracket installation position; 42: Read head bracket; 43: Magnetic scale sensor; 44: Magnetic scale; 45: Magnetic scale installation position;

[0024] 5: Equal height parts; 6: Slider; 7: Silicone stopper. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] like Figure 1-4 As shown, the utility model includes two sets of parallel Y-axis motion mechanisms and an X-axis motion mechanism orthogonal to the Y-axis motion mechanism. The X-axis motion mechanism includes an X-axis beam 32 and an X linear motor drive assembly. The Y-axis motion mechanism includes a left Y-axis motion mechanism, the left Y-axis motion mechanism includes a left Y-axis beam 11 and a left Y linear motor drive assembly, and the right Y-axis motion mechanism includes a right Y-axis beam 24 and a right Y linear motor drive assembly. The two ends of the X-axis beam 32 are arranged above the left Y-axis beam 11 and the right Y-axis beam 24, and are respectively connected to the left Y linear motor drive assembly and the right Y linear motor drive assembly, so as to realize the movement of the X-axis beam 32 along the Y-axis direction.

[0027] In this embodiment, the X-axis linear motor drive assembly includes an X-stator 31, an X-moving element 33, an X-linear rail 37, and an X-slider connecting block 34. The X-stator 31 is fixed above the X-axis crossbeam 32 and is arranged along the X-axis direction. The X-moving element 33 is arranged above the X-stator 31 so as to be movable back and forth. The X-linear rails 37 are respectively arranged on the front and rear sides of the X-stator 31, and the direction is consistent with the setting direction of the X-stator 31. The X-slider connecting block 34 is arranged on the X-stator 3 1, the middle part of the X slider connecting block 34 is fixedly connected to the X mover 33, and the front and rear sides of the X slider connecting block 34 are slidably connected to the X linear track 37 through the slider 6; the left Y linear motor drive assembly includes a left Y stator 12, a left Y mover 14, and a left Y linear track 15. The left Y stator 12 is fixed above the left Y-axis crossbeam 11 and is arranged along the Y-axis direction. The left Y mover 14 can move back and forth and is arranged above the left Y stator 12. The Y linear rails 15 are respectively arranged on the left and right sides of the left Y stator 12, and the direction is consistent with the setting direction of the left Y stator 12. The left end of the X-axis crossbeam 32 is arranged above the left Y stator 12 and is fixedly connected to the left Y mover 14. The left end of the X-axis crossbeam 32 is also slidably connected to the left Y linear rail 15 through the slider 6; the right Y linear motor drive assembly includes a right Y stator 21, a right Y mover 23, and a right Y linear rail 27. The right Y stator 21 is fixed to the left Y stator 12. The right Y-axis beam 24 is above the right Y-axis beam 24 and is arranged along the Y-axis direction. The right Y mover 23 can move back and forth and is arranged above the right Y stator 21. The right Y linear rail 27 is respectively provided on the left and right sides of the right Y stator 21, and the direction is consistent with the setting direction of the right Y stator 21. The right end of the X-axis beam 32 is provided above the right Y stator 21 and is fixedly connected to the right Y mover 23. The right end of the X-axis beam 32 is also slidably connected to the right Y linear rail 27 through a slider 6.

[0028] In this embodiment, the side surfaces of the X-axis beam 32, the left Y-axis beam 11, and the right Y-axis beam 24 are provided with magnetic scale mounting positions 45, and a magnetic scale 44 is provided in the magnetic scale mounting position 45. Both ends of the X-axis beam 32 and the X-slider connecting block 34 are provided with a read head bracket mounting position 41 and a read head bracket 42. One end of the read head bracket 42 is provided on the read head bracket mounting position 41, and the other end extends downward and is provided with a magnetic scale sensor 43. The magnetic scale sensor 43 is directly opposite the magnetic scale 44. The utility model also provides a magnetic scale 44 sensing mechanism to provide timely feedback on the travel position of the X-axis and Y-axis of the utility model.

[0029] In this embodiment, an X-reset photoelectric sensor 35 is provided above the X-axis crossbeam 32 at the right end of the X-linear track 37, and an X-reset photoelectric baffle 36 is provided on the X-slider connecting block 34 at a position corresponding to the X-reset photoelectric sensor 35.

[0030] In this embodiment, a Y-reset photoelectric sensor 25 is provided at the end of the right Y-axis crossbeam 24. A Y-reset photoelectric barrier 24 is provided below the X-slider connecting block 34, corresponding to the Y-reset photoelectric sensor 25. When the reset photoelectric barrier moves into the reset photoelectric sensor, the sensor triggers a feedback signal to the SMT machine's host computer, causing each motion mechanism to reset.

[0031] In this embodiment, silicone stops 7 are provided at both ends of the X linear track 37, the left Y linear track 15, and the right Y linear track 27. The silicone stops 7 are provided to provide a buffer when each mover moves to the end to prevent derailment.

[0032] In this embodiment, a left Y mover terminal box 13 and a right Y mover terminal box 22 are respectively provided above the left and right ends of the X-axis crossbeam 32. Similarly, an X mover terminal box position is also provided on the X slider connecting block 34, and a PCB adapter plate is provided inside for connecting with the left Y mover 14, the right Y mover 23 and the X mover 33 to drive them to move.

[0033] In this embodiment, equal height parts 5 are provided under the left Y-axis beam 11 and under the right Y-axis beam 24. The setting of the equal height parts 5 can lift the entire motion mechanism and ensure that it is level. A circuit board transmission mechanism is set under the motion device. The two do not interfere with each other during movement, and the transmission accuracy will not be affected by the tilt of the entire motion mechanism.

[0034] After the present invention is mounted on the workbench of the placement machine, the X-slider connecting block 34 of the present invention is used to fix the placement machine head. The movement of the present invention drives the placement machine head to move along the X-axis and Y-axis. The left Y mover 14 moves on the left Y stator 12, and the right Y mover 23 moves on the right Y stator 21. This drives the X-axis crossbeam 32 to move along the Y-axis. Similarly, when the X mover 33 moves on the X stator 31, this drives the X-slider connecting block 34 to carry the placement machine head along the X-axis.

[0035] In the description of the specification of the present invention, it should be understood that the terms "above", "front and back sides", "left and right sides", "downward", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0036] In this utility model, unless otherwise specified or limited, the term "connection" and other terms should be understood in a broad sense. For example, it can mean fixed connection, detachable connection, or integration; it can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual-drive linear motor motion mechanism, characterized in that The invention comprises two sets of Y-axis motion mechanisms arranged in parallel and an X-axis motion mechanism orthogonal to the Y-axis motion mechanism, wherein the X-axis motion mechanism comprises an X-axis beam (32) and an X linear motor drive assembly, and the Y-axis motion mechanism comprises a left Y-axis motion mechanism, the left Y-axis motion mechanism comprises a left Y-axis beam (11) and a left Y linear motor drive assembly, and the right Y-axis motion mechanism comprises a right Y-axis beam (24) and a right Y linear motor drive assembly; two sections of the X-axis beam (32) are arranged above the left Y-axis beam (11) and the right Y-axis beam (24), and are respectively connected to the left Y linear motor drive assembly and the right Y linear motor drive assembly, thereby realizing the movement of the X-axis beam (32) along the Y-axis direction.

2. A dual-drive linear motor motion mechanism according to claim 1, characterized in that The X-axis linear motor drive assembly includes an X-stator (31), an X-moving element (33), an X-linear rail (37), and an X-slider connecting block (34). The X-stator (31) is fixed above the X-axis crossbeam (32) and is arranged along the X-axis direction. The X-moving element (33) is arranged above the X-stator (31) so as to be movable back and forth. The X-linear rail (37) is respectively arranged on the front and rear sides of the X-stator (31), and the direction is consistent with the setting direction of the X-stator (31). The X-slider connecting block (34) is arranged on the upper side of the X-stator (31). The middle part of the X slider connecting block (34) is fixedly connected to the X mover (33), and the front and rear sides of the X slider connecting block (34) are slidably connected to the X linear track (37) through the slider (6); the left Y linear motor drive assembly includes a left Y stator (12), a left Y mover (14), and a left Y linear track (15), the left Y stator (12) is fixed above the left Y axis beam (11) and is arranged along the Y axis direction, the left Y mover (14) is arranged above the left Y stator (12) and can move back and forth, and the left Y linear The track (15) is respectively arranged on the left and right sides of the left Y stator (12), and the direction is consistent with the setting direction of the left Y stator (12). The left end of the X-axis crossbeam (32) is arranged above the left Y stator (12) and is fixedly connected to the left Y mover (14). The left end of the X-axis crossbeam (32) is also slidably connected to the left Y linear track (15) through a slider (6); the right Y linear motor drive assembly includes a right Y stator (21), a right Y mover (23), and a right Y linear track (27). The right Y stator (21) is fixed to the left Y stator (12). The right Y-axis crossbeam (24) is arranged above the right Y-axis crossbeam (24) and is arranged along the Y-axis direction. The right Y-moving element (23) is arranged above the right Y-stator (21) so as to be movable back and forth. The right Y-linear track (27) is respectively arranged on the left and right sides of the right Y-stator (21), and the direction is consistent with the setting direction of the right Y-stator (21). The right end of the X-axis crossbeam (32) is arranged above the right Y-stator (21) and is fixedly connected to the right Y-moving element (23). The right end of the X-axis crossbeam (32) is also slidably connected to the right Y-linear track (27) through a slider (6).

3. A dual-drive linear motor motion mechanism according to claim 2, characterized in that The sides of the X-axis crossbeam (32), the left Y-axis crossbeam (11) and the right Y-axis crossbeam (24) are provided with a magnetic scale mounting position (45), and a magnetic scale (44) is provided in the magnetic scale mounting position (45). Both ends of the X-axis crossbeam (32) and the X-slider connecting block (34) are provided with a read head bracket mounting position (41) and a read head bracket (42). One end of the read head bracket (42) is provided on the read head bracket mounting position (41), and the other end extends downward and is provided with a magnetic scale sensor (43). The magnetic scale sensor (43) is directly opposite to the magnetic scale (44).

4. A dual-drive linear motor motion mechanism according to claim 2, characterized in that An X-reset photoelectric sensor (35) is provided above the X-axis crossbeam (32) and at the right end of the X-linear track (37), and an X-reset photoelectric baffle (36) is provided on the X-slider connecting block (34) at a position corresponding to the X-reset photoelectric sensor (35).

5. The dual-drive linear motor motion mechanism according to claim 2, characterized in that A Y reset photoelectric sensor (25) is provided at the end of the right Y-axis crossbeam (24), and a Y reset photoelectric baffle (26) is provided below the X-slider connecting block (34) at a position corresponding to the Y reset photoelectric sensor (25).

6. A dual-drive linear motor motion mechanism according to claim 2, characterized in that Both ends of the X linear track (37), the left Y linear track (15), and the right Y linear track (27) are respectively provided with silicone stoppers (7).

7. The dual-drive linear motor motion mechanism according to claim 2, characterized in that A left Y-moving element terminal box (13) and a right Y-moving element terminal box (22) are respectively provided above the left and right ends of the X-axis crossbeam (32).

8. The dual-drive linear motor motion mechanism according to claim 1, characterized in that Equal height components (5) are provided below the left Y-axis crossbeam (11) and below the right Y-axis crossbeam (24).

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