A linear motor mover slide

Abstract

The present invention discloses a linear motor mover slide, comprising a slide rail, a linear motor mover body, a magnetic grating reading head assembly and an extreme position sensing assembly, wherein the linear motor mover body is slidably arranged in the slide rail, the linear motor mover body is slidably connected to the slide rail, the magnetic grating reading head assembly is threadedly connected to the linear motor mover body, and the extreme position sensing assembly is arranged on the linear motor mover body and is arranged corresponding to the magnetic grating reading head assembly. The present invention belongs to the technical field of slides, and specifically refers to a linear motor mover slide.

Description

Technical Field

[0001] The invention belongs to the technical field of slides, and in particular relates to a linear motor mover slide. Background Art

[0002] Linear motor products have been widely used in the field of automation. Conventional linear motor products are only composed of a moving part and a stator. To achieve the function of linear feed, linear motor users must also install the stator on the base and fix the moving part on the workbench. A linear rolling guide pair must be installed between the base and the workbench. The guide bar in the guide pair is fixed on the base, and the slider in the guide pair is fixed on the workbench. Then, the moving part coil is supplied with alternating current through a special drive system to realize the movement of the moving part relative to the stator. In addition to the moving part, the moving parts of this type of linear motor equipment also include processed parts and purchased parts such as the workbench and slider, which makes the equipment structure and the manufacturing, installation, and debugging processes complicated, and the appearance occupies a large space.

[0003] In addition, conventional linear motor rotors have encapsulated the iron core and coil together. The epoxy resin material used for encapsulation has poor thermal conductivity, which causes a large temperature rise in the motor winding, affecting the improvement of motor performance. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a linear motor mover slide, which can eliminate the guide rail pair and workbench, greatly reducing the supporting processing, installation and debugging costs of linear motor users, while saving installation space and helping to improve thermal conductivity.

[0005] In order to achieve the above functions, the technical solution adopted by the present invention is as follows: a linear motor mover slide, including a slide rail, a linear motor mover body, a magnetic grating reading head assembly and an extreme position sensing assembly, wherein the linear motor mover body is slidably arranged in the slide rail, and the linear motor mover body is slidably connected to the slide rail, which helps to reduce the resistance of the linear motor mover body during the sliding process, and the magnetic grating reading head assembly is threadedly connected to the linear motor mover body, and the magnetic grating reading head assembly reads the equally spaced magnetic waves recorded on the magnetic grating scale, and then corresponds to the corresponding length and position, and the extreme position sensing assembly is arranged on the linear motor mover body and is connected to the magnetic grating The reading head component is configured accordingly, and the limit position sensing component can be used to sense the limit position of the linear motor mover body, timely control the current transmission through the external control component, change the sliding direction of the linear motor mover body, and thus prevent the linear motor mover body from being collided; the linear motor mover body includes a support platform, an iron core, a coil, an annular bead and an end plugging piece, the side wall of the support platform is provided with a ball groove 1, the end of the support platform is provided with a penetrating bead return hole, the bead return hole is arranged corresponding to the ball groove 1, the inner side wall of the slide rail is provided with a ball groove 2 that matches the ball groove 1, and the annular bead is wound around the bead return hole and the outside of the ball groove 1 The ball groove 1, ball groove 2, bead return hole and annular beads are symmetrically arranged in two groups along the vertical center section of the support platform, and the sliding connection between the support platform and the slide rail is realized through the cooperation of the ball groove 1, ball groove 2, bead return hole and annular beads. When the linear motor mover body slides on the slide rail, the annular beads circulate between the bead return hole, ball groove 1 and ball groove 2, thereby facilitating the linear motor mover body to slide repeatedly on the slide rail. The bottom of the support platform is provided with a through groove 1, and the top of the support platform is provided with a through groove 2. The through groove 2 is separated from the through groove 1, and the through groove 2 is evenly provided with through tooth grooves, and the bottom end of the iron core is provided with a tooth portion. The part is arranged in cooperation with the tooth groove, and the iron core is installed in the second through groove by embedding the tooth part in the tooth groove. The coil is arranged in the first through groove, and the coil surrounds the outside of the tooth part. The coil and the iron core are encapsulated as a whole by special epoxy resin materials. The end of the coil is connected to a wire, and the end sealing piece is threadedly connected to the end of the support platform and two groups are symmetrically arranged along the vertical center plane of the support platform. The wire passes through the end sealing piece, and the iron core is clamped and fixed in the second through groove by the end sealing piece. At the same time, it can play a dust-proof role. A specific current is passed into the coil through the wire, and the linear motor mover body is driven to reciprocate along the slide rail under the action of the magnetic field.

[0006] Furthermore, the iron core is arranged to fit the two inner side walls and the bottom wall of the through slot, so that the entire support platform becomes a heat sink for the motor winding, which is beneficial to improving the working condition of the motor and enhancing the performance of the motor.

[0007] Furthermore, the length of the tooth portion is greater than the thickness of the interval between the first through slot and the second through slot, so that the coil can be easily sleeved on the outer periphery of the tooth portion of the iron core.

[0008] Furthermore, the top of the support platform is provided with an accessory mounting hole, and the accessory mounting holes are provided with two groups and are symmetrically arranged along the longitudinal center plane of the support platform. The magnetic grating reading head assembly and the limit position sensing assembly are installed on the support platform through the accessory mounting holes.

[0009] Furthermore, ventilation grooves are provided on an inner side wall of the through groove, and two groups of the ventilation grooves are symmetrically provided along a vertical center plane of the through groove to improve heat dissipation efficiency.

[0010] The present invention adopts the above structure to achieve the following beneficial effects: the linear motor mover slide provided by the present invention has a reasonable design, uses annular beads to realize the sliding connection between the linear motor mover body and the slide rail, eliminates the guide rail pair and the workbench, and greatly reduces the supporting processing, installation, and debugging costs of the linear motor user. A specific current is passed through the coil through a wire to generate a magnetic field, and the linear motor mover body is driven to slide repeatedly along the slide rail under the drive of the magnetic field. The coordinated arrangement of the annular beads, the bead return hole, the ball groove one and the ball groove two can reduce the friction force of the linear motor mover body during sliding, and at the same time The annular beads circulate between the return bead hole and the ball groove during the sliding process of the linear motor mover body, and are not limited by the length of the slide rail. The setting of the end sealing parts can fix the iron core and the coil on the support table, which can play a dust-proof role; the magnetic grid reading head assembly reads the equally spaced magnetic waves recorded on the magnetic grid scale, and then corresponds to the corresponding length and position; the limit position sensing assembly can be used to sense the limit position of the linear motor mover body, and timely control the current transmission through the external control component to change the sliding direction of the linear motor mover body, thereby preventing the linear motor mover body from being collided. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of a linear motor mover slide of the present invention;

[0012] Figure 2 An exploded view of a linear motor mover slide of the present invention;

[0013] Figure 3 It is a structural schematic diagram of a support platform of a linear motor mover slide of the present invention.

[0014] Among them, 1. slide rail, 2. linear motor mover body, 3. magnetic grid reading head assembly, 4. extreme position sensing assembly, 5. support table, 6. iron core, 7. coil, 8. ring beads, 9. end sealing parts, 10. ball groove one, 11. ball return hole, 12. ball groove two, 13. through groove one, 14. through groove two, 15. tooth groove, 16. tooth part, 17. accessory mounting hole, 18. ventilation groove, 19. wire. DETAILED DESCRIPTION

[0015] The technical solution of the present invention is further described in detail below in conjunction with specific implementations. The parts of the technical features or connection relationships described in the present invention that are not described in detail are all existing technologies adopted.

[0016] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0018] like Figure 1-3 The present invention provides a linear motor mover slide, comprising a slide rail 1, a linear motor mover body 2, a magnetic grating reading head assembly 3 and an extreme position sensing assembly 4, wherein the linear motor mover body 2 is slidably arranged in the slide rail 1, the linear motor mover body 2 is slidably connected to the slide rail 1, the magnetic grating reading head assembly 3 is threadedly connected to the linear motor mover body 2, and the extreme position sensing assembly 4 is arranged on the linear motor mover body 2 and is arranged corresponding to the magnetic grating reading head assembly 3; ... The linear motor mover body 2 includes a support platform 5, an iron core 6, a coil 7, an annular bead 8 and an end plugging member 9. The side wall of the support platform 5 is provided with a ball groove 10, and the end of the support platform 5 is provided with a penetrating bead hole 11. The bead hole 11 is arranged corresponding to the ball groove 10. The inner side wall of the slide rail 1 is provided with a ball groove 2 12 matched with the ball groove 10. The annular bead 8 is wound in the bead hole 11 and outside the ball groove 10. The ball groove 10 and the ball groove 2 1 2. The bead return hole 11 and the annular bead 8 are symmetrically arranged in two groups along the vertical center section of the support platform 5. The support platform 5 and the slide rail 1 are slidably connected by the ball groove 10, the ball groove 2 12, the bead return hole 11 and the annular bead 8. The bottom of the support platform 5 is provided with a through groove 13, and the top of the support platform 5 is provided with a through groove 2 14. The through groove 2 14 is separated from the through groove 13. The through groove 2 14 is evenly provided with through tooth grooves 15. The bottom of the iron core 6 is provided with The tooth portion 16 is matched with the tooth groove 15, and the iron core 6 is installed in the second through groove 14 by embedding the tooth portion 16 in the tooth groove 15. The coil 7 is arranged in the through groove 13, and the coil 7 surrounds the outside of the tooth portion 16. The coil 7 and the iron core 6 are packaged as a whole by a special epoxy resin material. The end of the coil 7 is connected to a wire 19, and the end plugging piece 9 is threadedly connected to the end of the support platform 5 and two groups are symmetrically arranged along the vertical center plane of the support platform 5.

[0019] The iron core 6 is arranged to fit the inner side wall and the bottom wall of the second through slot 14 .

[0020] The length of the tooth portion 16 is greater than the thickness of the interval between the first through slot 13 and the second through slot 14 .

[0021] The top of the support platform 5 is provided with an accessory mounting hole 17 , and the accessory mounting holes 17 are provided with two groups and are symmetrically arranged along the longitudinal center plane of the support platform 5 . The magnetic grating reading head assembly 3 and the extreme position sensing assembly 4 are installed on the support platform 5 through the accessory mounting holes 17 .

[0022] The inner wall of the through slot 13 is provided with ventilation slots 18 , and two groups of ventilation slots 18 are symmetrically arranged along the vertical center plane of the through slot 13 .

[0023] During specific use, a specific current is passed through the coil 7 through the wire 19 to generate a magnetic field, thereby driving the linear motor mover body 2 to slide along the slide rail 1. The coordinated arrangement of the annular beads 8, the bead return hole 11, the ball groove 1 10 and the ball groove 2 12 can reduce the friction force of the linear motor mover body 2 during the sliding process. At the same time, the annular beads 8 circulate between the bead return hole 11 and the ball groove 10 during the sliding process of the linear motor mover body 2, and slide freely without being restricted by the length of the slide rail 1. The magnetic grating reading head assembly 3 reads the equally spaced magnetic waves recorded on the magnetic grating scale, and then corresponds to the corresponding length and position. The extreme position sensing assembly 4 can be used to sense the extreme position of the linear motor mover body 2, and timely control the current transmission through the external control component to change the sliding direction of the linear motor mover body 2, thereby preventing the linear motor mover body 2 from being hit.

[0024] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A linear motor mover slide, characterized in that: It includes a slide rail, a linear motor mover body, a magnetic grating reading head assembly and an extreme position sensing assembly, the linear motor mover body is slidably arranged in the slide rail, the linear motor mover body is slidably connected to the slide rail, the magnetic grating reading head assembly is threadedly connected to the linear motor mover body, and the extreme position sensing assembly is arranged on the linear motor mover body and is arranged corresponding to the magnetic grating reading head assembly; the linear motor mover body includes a support platform, an iron core, a coil, an annular bead and an end sealing piece, the side wall of the support platform is provided with a ball groove 1, the end of the support platform is provided with a penetrating bead return hole, the bead return hole is arranged corresponding to the ball groove 1, the inner side wall of the slide rail is provided with a ball groove 2 matched with the ball groove 1, the annular bead is wound in the bead return hole and outside the ball groove 1, the ball groove 1, the ball groove 2, Two groups of bead return holes and annular beads are symmetrically arranged along the vertical center section of the support platform, and the sliding connection between the support platform and the slide rail is realized through the cooperation of the ball groove one, the ball groove two, the bead return holes and the annular beads. The bottom of the support platform is provided with a through groove one, and the top of the support platform is provided with a through groove two. The through groove two is separated from the through groove one, and the through groove two is evenly provided with through teeth. The bottom end of the iron core is provided with a tooth portion, and the tooth portion is cooperated with the tooth groove. The iron core is installed in the through groove two by being embedded in the tooth groove. The coil is arranged in the through groove one, and the coil surrounds the outside of the tooth portion. The coil and the iron core are encapsulated as a whole by special epoxy resin materials. The end of the coil is connected to a wire, and the end sealing piece is threadedly connected to the end of the support platform and is symmetrically arranged in two groups along the vertical center plane of the support platform.

2. A linear motor mover slide according to claim 1, characterized in that: The iron core is arranged in contact with the two inner side walls and the bottom wall of the through slot.

3. The linear motor mover slide according to claim 1, characterized in that: The length of the tooth portion is greater than the thickness of the interval between the first through slot and the second through slot.

4. The linear motor mover slide according to claim 1, characterized in that: The top of the support platform is provided with accessory mounting holes, and the accessory mounting holes are provided with two groups and are symmetrically arranged along the longitudinal center plane of the support platform. The magnetic grid reading head assembly and the limit position sensing assembly are installed on the support platform through the accessory mounting holes.

5. The linear motor mover slide according to claim 1, characterized in that: An inner side wall of the through slot is provided with ventilation slots, and two groups of the ventilation slots are symmetrically arranged along a vertical center plane of the through slot.

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