TW202019064A - Linear motor assembly with rolling supporting structure - Google Patents

Abstract

A linear motor assembly with rolling supporting structure includes a base having an elongated groove longitudinally defined in the base. A stator is mounted onto a bottom of the elongated groove. At least one side of the stator is formed with a moving path. A series of first magnetic poles is disposed on the stator. A magnettor is movably mounted in the elongated groove. The magnettor has a second magnetic pole disposed thereon and corresponding to the series of first magnetic poles such that the magnettor is reciprocally and linearly moved relative to the stator along the elongated groove due to an interaction effect of the series of first magnetic poles and the second magnetic pole. At least one rolling support structure is mounted onto at least one side of the second magnetic pole for supporting the magnettor along an anti-gravity direction. The at least one rolling support structure is reciprocally moved along the at least one moving path.

Description

Linear motor assembly with rolling support structure

The invention relates to a linear motor assembly; in particular to an innovative structural designer with a rolling support structure.

The linear motor assembly includes nothing but a base, a mover that reciprocates linearly relative to the base, and a guide structure installed between the base and the mover. Generally speaking, the base is formed with a long groove for the reciprocating sliding of the mover, the bottom surface of the long groove is provided with a plurality of magnetic elements arranged along a straight line, and the bottom surface of the mover is also oppositely provided with magnetic elements, The magnetic principle is used to provide power for the mover to move. Generally speaking, the guide members are usually arranged in pairs, and are installed between the two side walls of the long slot and the mover. The guide member is a linear bearing or a similar mechanism to provide guidance With the effect of reducing friction.

However, such a structural configuration has found that the following problems still exist in practical use experience: First, taking the ball and (lateral) ball groove as an example, the mover and the bottom surface of the long groove are not in direct contact, and The linear bearing or similar mechanism is provided between the two side walls of the linear motor and the mover, so that a gap is formed between the mover and the bottom surface of the long groove, so under the influence of the gravity of the mover itself, it is very easy The pressure difference between the upper and lower contact points between the ball and the bead groove will cause undue wear (partial wear) of the bead groove over time, affect the accuracy of the linear motor movement, and relatively shorten the service life of the linear motor.

Therefore, in view of the problems existing in the above-mentioned conventional technologies, how to develop an innovative structure that can be more ideal and practical, it is really necessary for the relevant industry to think about the goal and direction of breakthrough. In view of this, the inventor has many years of experience in manufacturing development and design of related products. In view of the above objectives, after detailed design and careful evaluation, the invention finally has a practical application.

Based on the foregoing purpose, the linear motor assembly with a rolling support structure includes a base with a long slot formed longitudinally; a stator with a series of first magnetic poles arranged on the bottom surface of the long slot, and Along the axis of the long slot, at least one side of the series of first magnetic poles is provided with a moving path; a mover slidably disposed in the long slot, the mover is arranged on the side adjacent to the series of first magnetic poles There is a second magnetic pole, the reciprocating linear movement of the mover relative to the stator along the long slot by the interaction of the series of first magnetic poles and the second magnetic pole, and the moving path of the mover is parallel to the At least one moving path; at least one guide member provided on at least one wall surface of the mover and the long slot, supported by the at least one guide member, so that the series of first magnetic poles and the second magnetic pole There is a gap formed between them; at least one rolling support structure, the at least one rolling support structure is installed on at least one side of the second magnetic pole, and provides support for the mover in the antigravity direction; the at least one rolling support structure is Reciprocating on the at least one moving path; the at least one rolling support structure includes a preloading member with elastic support capability installed on the mover and a roller rotating on the preloading member, and the at least A roller cooperates with the movement of the mover to roll back and forth on at least one moving path on the stator.

Of course, the present invention may differ in certain parts or arrangements of parts, but the selected embodiments are described in detail in this specification and the structure is shown in the drawings.

Please refer to Figures 1, 2, 3, and 4 for a preferred embodiment of the linear motor assembly with rolling support structure of the present invention, but these embodiments are for illustrative purposes only and are not subject to patent application The limitation of this structure; the linear motor assembly with rolling support structure includes a base 10 with a long slot 11 formed longitudinally; a stator 12 with a series of first magnetic poles 121 arranged thereon, and the stator 12 is mounted on the The bottom surface of the long slot 11 is arranged along the axis of the long slot 11. At least one side of the series of first magnetic poles 121 is provided with a moving path 13; in the preferred embodiment, the stator 12 includes a The base 122 of the bottom surface of the long slot 11, the series of first magnetic poles 121 are mounted on the base 122, and the at least one moving path 13 is mounted on the base 122. A mover 20 slidably arranged in the long slot 11, a side of the mover 20 adjacent to the series of first magnetic poles 121 is provided with a second magnetic pole 21, by the series of first magnetic poles 121 and the second magnetic pole 21 The interaction of the mover 20 causes the reciprocating linear movement of the mover 20 relative to the stator 12 along the long slot 11, and the moving path of the mover 20 is parallel to the at least one moving path 13; at least one guiding member 30, The at least one guiding member 30 is disposed on at least one corresponding wall surface of the mover 20 and the long slot 11, and supported by the at least one guiding member 30, the series of first magnetic poles 121 and the second A gap 40 is formed between the magnetic poles 21; at least one rolling support structure 50 is installed on at least one side of the second magnetic pole 21 and provides support for the mover 20 in the direction of gravity, eliminating The mover 20 acts on the gravity of the at least one guide member 30, balances the pressure difference between the upper and lower of the at least one guide member 30, prolongs the service life, and reduces the maintenance frequency of the linear motor; the at least one rolling support structure 50 is The at least one moving path 13 reciprocates; the at least one rolling support structure 50 includes a preload member 51 having elastic support capability and mounted on the mover 20 and a screw mounted on the preload member 51 The roller 52, wherein the at least one roller 52 cooperates with the movement of the mover 20 to roll back and forth on at least one moving path 13 on the stator 12.

Please refer to Figures 2, 3, and 4 for a first preferred embodiment of at least one rolling support structure 50 of the present invention. In this preferred embodiment, the at least one preload member 51 includes a device The mounting portion 511 provided on the mover 20 and a wheel base 512 connected to the mounting portion 511, wherein the at least one roller 52 is screwed on the at least one wheel base 512, and the at least one mounting portion 511 and the The connection of at least one wheel base 512 is set as an elastic deformation section 513. The at least one elastic deformation section 513 is installed in the mover 20 to support the mover 20 in the anti-gravity direction in a pre-compression deformation manner.

Please refer to FIG. 5 which is the second preferred embodiment of the rolling support structure 50A of the present invention. In this preferred embodiment, at least one moving path 13A and at least one roller 52A on the base 122A The contact surface 14A is an inclined surface whose horizontal height decreases inward, and the wheel surface of the at least one roller 52A and the at least one inwardly inclined contact surface 14A complement each other. Using the inwardly inclined contact surface 14A and the roller 52A cooperating with the inwardly inclined contact surface 14A, when the contact surface 14A, the roller 52A and the guide member 30 of this embodiment are implemented as shown in FIG. 2, When one set is provided on each side of the base 122A/mover 20A, the linear movement path of the mover 20A can be maintained, and the effect of balancing the lateral pressure difference between the two guide members 30 can be balanced. Furthermore, the convex contact surface 14A can provide a basic blocking effect on the contamination of the guide member 30 due to friction.

Please refer to FIG. 6 which is the third preferred embodiment of the rolling support structure 50B of the present invention. In this preferred embodiment, at least one movement path 13B and at least one roller 52B on the base 122B The contact surface 14B has a triangular cross section, and the wheel surface of the at least one roller 52B and the at least one contact surface 14B with a triangular cross section complement each other. Using the contact surface 14B with a triangular cross-section and the roller 52B cooperating with the contact surface 14B with a triangular cross-section, when the contact surface 14B, the roller 52B and the guide member 30 of this embodiment are as shown in FIG. 2 In the embodiment, when a group is provided on both sides of the base 122B/mover 20B, the linear movement path of the mover 20B can be maintained, and the effect of balancing the lateral pressure difference between the two guide members 30 can be balanced. Similarly, with the raised contact surface 14B, a basic blocking effect can be produced on the contamination of the guide member 30 due to friction.

Please refer to Figures 7 and 8 for a fourth/fifth preferred embodiment of the rolling support structure 50C/50D of the present invention, wherein the preload member 51C/51D includes a movable member 20C/ A cylinder 514 on 20D and a wheel base 515 connected to the cylinder 514; the cylinder 514 is axially mounted on the bottom surface of the mover 20C/20D and reciprocates axially relative to the mover 20C/20D The roller 52C/52D is screwed on the wheel base 515, and an elastic member 53C/53D is installed between the wheel base 515 and the bottom surface of the mover 20C/20D. As shown in FIG. 7, the elastic member 53C is a set of springs disposed on the column 514. As shown in FIG. 8 again, the elastic member 53D is a disc spring penetrated by the column 514.

Please refer to FIG. 9 which is the sixth preferred embodiment of the rolling support structure 50E of the present invention. In this preferred embodiment, a groove 15E is longitudinally recessed on at least one side wall of the long groove 11E , And the at least one moving path 13E is provided on the wall surface of the at least one groove 15E; the at least one preload member 51E is the axle mounted on the mover 20E, and the at least one roller 52E is coaxially mounted It is provided on the free end of the at least one preload member 51E. In addition, in the aforementioned second and third preferred embodiments, the cooperation mode of the at least one roller 52A/52B and the at least one contact surface 14A/14B can also be used in the present preferred embodiment.

Advantages of the present invention: The "linear motor assembly with rolling support structure" disclosed in the present invention is mainly based on the innovative unique structural types and technical features of the preload member and the roller, etc. As far as the conventional structure is concerned, it can provide the support effect of the mover in the anti-gravity direction, thereby eliminating the gravity of the mover acting on the at least one guide member, balancing the pressure difference between the at least one guide member and extending the service life , Practical progress in reducing the maintenance frequency of linear motors.

10: Base 11, 11E: Long slot 12: Stator 121: Series first poles 122, 122A, 122B: Base 13, 13A, 13B, 13E: Movement path 14A, 14B: Contact surface 15E: Groove 20, 20A, 20B, 20C, 20D, 20E: mover 21: second pole 30: guide member 40: gap 50, 50A, 50B, 50C, 50D, 50E: rolling support structure 51, 51C, 51D, 51E: preload member 511 : Mounting part 512: Wheel seat 513: Elastic deformation section 514: Cylinder 515: Wheel seat 52, 52A, 52B, 52C, 52D, 52E: Roller 53C, 53D: Elastic member

Figure 1 is a perspective external view of the present invention. Figure 2 is a cross-sectional view of the present invention. Figure 3 is a partial perspective exploded view of the mover of the present invention. Figure 4 is a partial cross-sectional view of the mover of the present invention. Figure 5 is a schematic diagram of a second preferred embodiment of the rolling support structure of the present invention. FIG. 6 is a schematic diagram of a third preferred embodiment of the rolling support structure of the present invention. Figure 7 is a schematic diagram of a fourth preferred embodiment of the rolling support structure of the present invention. Figure 8 is a schematic diagram of a fifth preferred embodiment of the rolling support structure of the present invention. FIG. 9 is a schematic diagram of a sixth preferred embodiment of the rolling support structure of the present invention.

10: Dock

11: Long slot

12: stator

121: Series first pole

122: Base

13: moving path

20: mover

21: second pole

30: Guide member

40: gap

50: rolling support structure

Claims (9)

A linear motor assembly with a rolling support structure includes: 　　 a base with a long slot formed longitudinally; 　　 a stator with a series of first magnetic poles arranged on the bottom of the long slot, and Along the axis of the long slot, at least one side of the series of first magnetic poles is provided with a moving path; 　　 a mover, the mover is slidably arranged in the long slot, the mover is adjacent to a A second magnetic pole is arranged on the side, and the interaction of the first magnetic pole of the series and the second magnetic pole makes the mover reciprocate linearly move relative to the stator along the long slot, and the moving path of the mover is Parallel to the at least one moving path; 　　 at least one guide member, the at least one guide member is disposed on a wall surface corresponding to at least one of the mover and the long groove, supported by the at least one guide member, so that A gap is formed between the series of first magnetic poles and the second magnetic pole; and at least one rolling support structure, the at least one rolling support structure is installed on at least one side of the second magnetic pole and provides the antigravity direction of the mover The support; the at least one rolling support structure is reciprocating on the at least one moving path; the at least one rolling support structure includes a pre-loaded member with elastic support capability installed on the mover and a screw The roller on the preloading member, and the at least one roller cooperates with the movement of the mover to roll back and forth on at least one moving path on the stator. The linear motor assembly with a rolling support structure as described in item 1 of the patent application scope, wherein the stator includes a base mounted on the bottom of the long slot, the series of first magnetic poles are mounted on the base, and The at least one moving path is set on the base. The linear motor assembly with rolling support structure as described in item 2 of the patent application scope, wherein the contact surface of the at least one moving path on the base and the at least one roller is a sloping surface whose horizontal height decreases inward, and the The wheel surface of at least one roller is complementary to the at least one inwardly inclined contact surface. The linear motor assembly with rolling support structure as described in item 2 of the patent application scope, wherein the contact surface of at least one moving path on the base and the at least one roller has a triangular cross section, and the at least one roller The wheel surface and the at least one contact surface with a triangular cross section complement each other. The linear motor assembly with rolling support structure as described in items 1, 2, 3, or 4 of the patent application scope, wherein the at least one preload member includes a mounting portion mounted on the mover and a continuous A wheel base of the mounting part; the at least one roller is rotatably mounted on at least one wheel base, and the connection between the at least one mounting part and the at least one wheel base is set as an elastic deformation section, and the at least one elastic deformation zone After installing the mover, the segment supports the mover in the anti-gravity direction in a pre-compression deformation manner. The linear motor assembly with rolling support structure as described in items 1, 2, 3, or 4 of the patent application scope, wherein the preload member includes a column mounted on the mover and a column connected to the column Wheel base; the column system is axially mounted on the bottom surface of the mover and performs axial reciprocating motion relative to the mover, the roller is rotatably mounted on the wheel base, and the wheel base and the mover An elastic member is installed between the bottom surfaces. The linear motor assembly with rolling support structure as described in item 6 of the patent application scope, wherein the elastic member is a set of springs arranged on the column body. The linear motor assembly with rolling support structure as described in item 6 of the patent application scope, wherein the elastic member is a disc spring through which the column body is inserted. The linear motor assembly with rolling support structure as described in item 1, 2, 3 or 4 of the patent application scope, wherein at least one side wall of the long groove is longitudinally recessed with a groove, and the at least one moving path is Disposed on the wall surface of the at least one groove; the at least one preload member is a wheel shaft mounted on the mover, and the at least one roller is coaxially installed on the free end of the at least one preload member .

Images