CN218897158U - Dustproof high-precision linear motion combined unit - Google Patents

Abstract

The utility model relates to a dustproof high-precision linear motion combined unit, which comprises a fixed main body structure, a rotor, a stator, a movable carrier plate, a grating ruler, a grating reading head and a cover plate, and is characterized in that: the fixed main body structure is fixedly provided with a rotor, the rotor is matched and connected with a stator, the stator is arranged on a movable carrier plate, the stator performs reciprocating motion through the driving of the rotor, the movable carrier plate is slidably connected on a guide rail through a sliding block and performs reciprocating motion along the guide rail under the driving of the stator, the guide rail is arranged in the fixed main body structure, the movable carrier plate is provided with a grating ruler, the fixed main body structure is encapsulated with a cover plate, the cover plate is positioned below the movable carrier plate and is in sealing connection with the movable carrier plate, and the cover plate is provided with a grating reading head corresponding to the grating ruler; the utility model can omit the link of installing the drag chain, so that the structure of the module is simpler, the influence of the drag chain operation on the overall accuracy of the module is avoided, and meanwhile, dust, impurities and the like are prevented from entering the inside of the module.

Description

Dustproof high-precision linear motion combined unit

Technical Field

The utility model relates to the technical field of linear motors, in particular to a dustproof high-precision linear motion combined unit.

Background

A linear motor is a transmission device that converts electrical energy directly into linear motion mechanical energy without any intermediate conversion mechanism. It can be seen that a rotating electrical machine is formed by radial sectioning and planar generating, the side from which the stator evolves is still called the stator, and the side from which the rotor evolves is called the mover.

Currently, most linear motor applications are used in the form of linear modules. The most common linear module is of a semi-closed structure, and meanwhile, the stator is mainly fixed on the module bottom plate main body, and the rotor is mounted on the carrier plate to move back and forth. This form of motor module has two main problems: firstly, the dustproof effect is poor, and in some application places where a large amount of dust and impurities exist, the impurity dust and the like easily fall into the guide rail so as to damage the guide rail, or the impurity dust and the like fall into a gap between a rotor and a stator of the motor so as to damage the motor; secondly, the stator is fixed, the mover moves in a module structure, a drag chain structure is needed to be equipped for the mover, and in some ultra-high-precision application places, the operation and the pulling of the drag chain can influence the stability of the operation of the motor, so that the overall precision is influenced.

Disclosure of Invention

The utility model aims to solve the defects and provide the dustproof high-precision linear motion combined unit, so that a drag chain installation link can be omitted, the module structure is simpler, the influence of drag chain operation on the overall precision of the module is avoided, and meanwhile, dust, impurities and the like are prevented from entering the inside of the module.

For realizing the purpose, design a dustproof high accuracy rectilinear movement combination unit, including fixed main body structure 1, active cell 2, stator 3, remove carrier plate 4, grating chi 5, grating reading head 6 and apron 7, its characterized in that: fixed main structure 1 is last fixed mounting has runner 2, the cooperation is connected with stator 3 on the runner 2, stator 3 installs on removing carrier plate 4, stator 3 is through runner 2 drive reciprocating motion, remove carrier plate 4 through slider 8 slidable connect on guide rail 9 to reciprocate along guide rail 9 under stator 3's drive, guide rail 9 installs in fixed main structure 1, remove and install grating chi 5 on carrier plate 4, it has apron 7 to encapsulate on the fixed main structure 1, apron 7 is located and removes carrier plate 4 below, and with remove and carry between the carrier plate 4 sealing connection, install the grating reading head 6 that corresponds with grating chi 5 on the apron 7.

Further, a stator mounting groove 10 is formed in the bottom surface of the movable carrier plate 4, the stator mounting groove 10 extends transversely, and the stator 3 is mounted in the movable carrier plate 4 in an embedded manner through the stator mounting groove 10.

Further, the height of the stator mounting groove 10 is not less than the height of the stator 3, and the bottom surface of the stator 3 does not protrude out of the inner plane of the movable carrier plate 4 after being mounted, so that abrasion, scratch and the like are avoided during movement.

Further, the front and back sides of the bottom surface of the movable carrier plate 4 are respectively provided with a step 11 protruding downwards, the steps 11 are arranged in a transversely extending manner, the front and back sides of the top surface of the cover plate 7 are respectively provided with a pressing groove 12 matched with the steps 11, the steps 11 are embedded in the pressing grooves 12, and the movable carrier plate 4 and the cover plate 7 are connected in an embedding manner through the steps 11 and the pressing grooves 12, so that dust, impurities and the like can be prevented from entering the inside of the module very much during movement.

Further, a frame-shaped hole 13 is formed in the center of the cover plate 7, the sliding block 8 below the movable carrier plate 4 is located in the frame-shaped hole 13, and when the movable carrier plate 4 moves to limit positions on two sides, gaps exist between two ends of the movable carrier plate 4 and two sides of the frame-shaped hole 13 of the cover plate 7, so that certain safety margins are ensured to exist on two sides of the movable carrier plate when the movable carrier plate is located at the limit positions.

Further, a grating reading head mounting groove is formed in the cover plate 7, the grating reading head mounting groove is formed in one side of the frame-shaped hole 13, and the grating reading head 6 is fixedly mounted on the cover plate 7 through the grating reading head mounting groove.

Further, the bottom surface of the movable carrier plate 4 is provided with a grating ruler mounting groove 14, the grating ruler 5 is mounted in the movable carrier plate 4 in an embedded manner through the grating ruler mounting groove 14, and the grating ruler 5 does not protrude out of the inner surface of the movable carrier plate 4 after being mounted, so that abrasion, scratch and the like can be avoided during movement.

Further, the waterproof connector 15 is installed at the end part of the fixed main body structure 1, and the cables of the rotor 2 and the grating reading head 6 penetrate out through the waterproof connector 15, so that a drag chain installation link is omitted.

Compared with the prior art, the utility model has the following advantages:

(1) Compared with the original module structure, the utility model adopts the step mosaic structure of the movable carrier plate and the cover plate, realizes the full sealing state of the module, and meets the use requirement of high sealing performance, thereby greatly preventing dust, impurities and the like from entering the inside of the module when in movement;

(2) The installation mode of the grating ruler is similar to that of a stator, an embedded mode is adopted, and meanwhile the grating ruler cannot protrude out of the inner surface of the carrier plate after being installed, so that abrasion, scratch and the like are avoided during movement;

(3) According to the utility model, a structure that the rotor is fixed and the stator moves is adopted, so that the structure that a drag chain is required to be equipped to follow the rotor to move when the rotor moves in the original structure is avoided;

(4) According to the utility model, a drag chain structure is not required to be installed, so that the module structure is simpler; on the other hand, under the ultra-high precision use requirement, the influence of drag chain operation on the whole precision of the die set is avoided;

(5) When the traditional module is equipped with a drag chain, the bending radius of the drag chain is required to be considered, so that the appearance height of the module is higher; the utility model can greatly reduce the appearance height of the module without considering the installation of the drag chain, thereby being convenient for installation and use in a narrow space;

(6) According to the module structure, the cables are fixedly installed, so that the service life of the module is shortened due to repeated bending of the cables, and the service life of the module is greatly prolonged;

(7) The utility model can be used in the fields of short stroke, ultrahigh precision, high speed and high-linear direct-drive application with high dustproof requirement, and is worth popularizing and applying.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is an exploded view of the present utility model;

FIG. 3 is a cross-sectional view of the present utility model;

FIG. 4 is a schematic view of a partial structure of a mobile carrier plate according to the present utility model;

FIG. 4base:Sub>A isbase:Sub>A cross-sectional view A-A of FIG. 4;

FIG. 4b is an enlarged view of I in FIG. 4 a;

FIG. 4c is an enlarged view of II in FIG. 4 a;

FIG. 5 is a schematic view of a partial structure at a cover plate of the present utility model;

FIG. 5a is a cross-sectional view B-B of FIG. 5;

FIG. 5b is an enlarged view of III in FIG. 5 a;

FIG. 6 is a schematic diagram of the cooperation of the cover plate and the movable carrier plate according to the present utility model;

FIG. 7 is a schematic perspective view of a prior art;

FIG. 8 is an exploded view of the prior art;

in the figure: 1. the movable support plate comprises a fixed main body structure 2, a rotor 3, a stator 4, a movable support plate 5, a grating ruler 6, a grating reading head 7, a cover plate 8, a sliding block 9, a guide rail 10, a stator mounting groove 11, a step 12, a pressing groove 13, a frame-shaped hole 14, a grating ruler mounting groove 15, a waterproof joint 16, a cover plate II 17, a support plate part sleeve 18, a rotor II 19, a stator II 20, a drag chain part sleeve 21 and a bottom plate main body part sleeve.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

as shown in the attached drawings, the utility model provides a dust-proof high-precision linear motion combined unit without a drag chain, which comprises a fixed main body structure 1, a rotor 2, a stator 3, a movable carrier plate 4, a grating ruler 5, a grating reading head 6 and a cover plate 7, and is characterized in that: the fixed main body structure 1 is fixedly provided with a rotor 2, the rotor 2 is matched and connected with a stator 3, the stator 3 is arranged on a movable carrier plate 4, the stator 3 is driven by the rotor 2 to reciprocate, the movable carrier plate 4 is slidably connected to a guide rail 9 through a sliding block 8 and reciprocates along the guide rail 9 under the driving of the stator 3, the guide rail 9 is arranged in the fixed main body structure 1, the movable carrier plate 4 is provided with a grating ruler 5, the fixed main body structure 1 is packaged with a cover plate 7, the cover plate 7 is positioned below the movable carrier plate 4 and is in sealing connection with the movable carrier plate 4, and the cover plate 7 is provided with a grating reading head 6 corresponding to the grating ruler 5; the waterproof connector 15 is arranged at the end part of the fixed main body structure 1, and the cables of the rotor 2 and the grating reading head 6 penetrate out through the waterproof connector 15, so that a drag chain installation link is omitted.

The bottom surface of the movable carrier plate 4 is provided with a stator mounting groove 10, the stator mounting groove 10 extends transversely, and the stator 3 is embedded and mounted in the movable carrier plate 4 through the stator mounting groove 10; the height of the stator mounting groove 10 is not less than that of the stator 3, and the bottom surface of the stator 3 does not protrude out of the inner plane of the movable carrier plate 4 after being mounted, so that abrasion, scratch and the like are avoided during movement. The front and back sides of the bottom surface of the movable carrier plate 4 are respectively provided with a step 11 which protrudes downwards, the steps 11 are arranged along the transverse extension, the front and back sides of the top surface of the cover plate 7 are respectively provided with a pressing groove 12 matched with the steps 11, the steps 11 are embedded in the pressing grooves 12, and the movable carrier plate 4 is connected with the cover plate 7 in an embedding mode through the steps 11 and the pressing grooves 12, so that dust, impurities and the like are prevented from entering the inside of the module when the movable carrier plate moves.

The center of the cover plate 7 is provided with a frame-shaped hole 13, the sliding block 8 below the movable carrier plate 4 is positioned in the frame-shaped hole 13, and when the movable carrier plate 4 moves to limit positions on two sides, gaps exist between two ends of the movable carrier plate 4 and two sides of the frame-shaped hole 13 of the cover plate 7, so that certain safety allowance exists on two sides of the movable carrier plate when the movable carrier plate is positioned at the limit positions; the cover plate 7 is provided with a grating reading head mounting groove, the grating reading head mounting groove is arranged on one side of the frame-shaped hole 13, and the grating reading head 6 is fixedly arranged on the cover plate 7 through the grating reading head mounting groove. The bottom surface of the movable carrier plate 4 is provided with the grating ruler mounting groove 14, the grating ruler 5 is embedded in the movable carrier plate 4 through the grating ruler mounting groove 14, and the grating ruler 5 does not protrude out of the inner surface of the movable carrier plate 4 after being mounted, so that abrasion, scratch and the like can be avoided during movement.

The utility model changes and innovates the original module structure, changes the installation modes of the rotor, the stator and the grating feedback system, and achieves the purpose of optimizing the performance of the module. In the innovative structure, the rotor is arranged on a fixed main body structure for fixing, the stator is arranged on the movable carrier plate, and the stator is driven to reciprocate through the rotor, so that the carrier plate is driven to move. The stator is embedded in the movable carrier plate, and as can be seen from the partial views (fig. 4, 4a and 4 c), the stator does not protrude from the inner plane of the movable carrier plate after being mounted. The carrier plate and the cover plate are moved, a step embedding mode is adopted, and a gap is kept at 0.5mm after the carrier plate and the cover plate are installed, so that dust, impurities and the like are prevented from entering the inside of the module when the carrier plate and the cover plate move. Meanwhile, when the carrier plate runs to the limit positions at two sides, a certain safety margin exists between two ends of the carrier plate and two sides of the center opening of the cover plate.

Meanwhile, the grating reading head of the module is fixedly installed on the cover plate, and the specific installation mode is shown in a partial view 2. The corresponding grating ruler is arranged on the movable carrier plate, the installation mode is similar to that of a stator, an embedded mode is adopted, meanwhile, the grating ruler cannot protrude out of the inner surface of the carrier plate after being installed, abrasion, scratch and the like are avoided during movement, and the specific installation mode is shown in the accompanying drawings 5, 5a and 5b. The cover plate is connected with the fixed main body structure and is fixed; the movable carrier plate is arranged on the guide rail and is driven to reciprocate by the movement of the stator. Because the mover and the ATOM grating ruler reading head adopt a fixed mounting mode, a drag chain is not required to be mounted, and only cables of the mover and the ATOM grating ruler are required to be penetrated out and connected through a waterproof connector, so that a drag chain mounting link is omitted

The present utility model is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principles of the utility model are intended to be equivalent substitutes and are included in the scope of the utility model.

Claims (8)

1. The utility model provides a dustproof high accuracy rectilinear movement combination unit, includes fixed major structure (1), active cell (2), stator (3), removes carrier plate (4), grating chi (5), grating reading head (6) and apron (7), its characterized in that: fixed main structure (1) is gone up fixed mounting and is had active cell (2), the cooperation is connected with stator (3) on active cell (2), stator (3) are installed on removing carrier plate (4), stator (3) are through active cell (2) drive and are reciprocating motion, remove carrier plate (4) through slider (8) slidable connection on guide rail (9) to do reciprocating motion along guide rail (9) under the drive of stator (3), guide rail (9) are installed in fixed main structure (1), remove and install grating chi (5) on carrier plate (4), the encapsulation has apron (7) on fixed main structure (1), apron (7) are located and remove carrier plate (4) below, and with remove between carrier plate (4) sealing connection, install grating reading head (6) that correspond with grating chi (5) on apron (7).

2. The dustproof high-precision linear motion assembly unit according to claim 1, wherein: the bottom surface of the movable carrier plate (4) is provided with a stator mounting groove (10), the stator mounting groove (10) is arranged along the transverse extension, and the stator (3) is embedded and mounted in the movable carrier plate (4) through the stator mounting groove (10).

3. The dustproof high-precision linear motion assembly unit according to claim 2, wherein: the height of the stator mounting groove (10) is not smaller than that of the stator (3), and the bottom surface of the stator (3) does not protrude out of the inner plane of the movable carrier plate (4) after the stator is mounted.

4. The dustproof high-precision linear motion assembly unit according to claim 1, wherein: the front and back sides of removal carrier plate (4) bottom surface all are equipped with step (11) that push down, step (11) are arranged along transversely extending, the front and back side of apron (7) top surface all is equipped with indent (12) with step (11) matched with, step (11) are embedded in indent (12), remove carrier plate (4) and apron (7) and pass through step (11) and indent (12) and inlay the mode and be connected.

5. The dustproof high-precision linear motion assembly unit according to claim 1, wherein: the novel movable support is characterized in that a frame-shaped hole (13) is formed in the center of the cover plate (7), a sliding block (8) below the movable support plate (4) is located in the frame-shaped hole (13), and when the movable support plate (4) moves to limit positions on two sides, gaps exist between two ends of the movable support plate (4) and two sides of the frame-shaped hole (13) of the cover plate (7).

6. The dustproof high-precision linear motion assembly unit according to claim 5, wherein: the cover plate (7) is provided with a grating reading head mounting groove, the grating reading head mounting groove is arranged on one side of the frame-shaped hole (13), and the grating reading head (6) is fixedly arranged on the cover plate (7) through the grating reading head mounting groove.

7. The dustproof high-precision linear motion assembly unit according to claim 1, wherein: the bottom surface of the movable carrier plate (4) is provided with a grating ruler mounting groove (14), the grating ruler (5) is embedded into the movable carrier plate (4) through the grating ruler mounting groove (14), and the grating ruler (5) does not protrude out of the inner surface of the movable carrier plate (4) after being mounted.

8. The dustproof high-precision linear motion assembly unit according to claim 1, wherein: waterproof joint (15) are installed to fixed body structure (1) tip, the cable of active cell (2) and grating reading head (6) is worn out through waterproof joint (15).

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