CN111365431A - A mobile platform assembly for linear module and linear module - Google Patents

Abstract

The invention discloses a closed high-rigidity precision linear module which comprises a moving platform assembly, a guide rail base used for sliding the moving platform assembly, and a ball screw arranged on the moving platform assembly. The movable platform assembly comprises a sliding seat and a cover plate fixedly arranged at the top end of the sliding seat, the sliding seat is provided with a first oil duct and a second oil duct which are communicated with each other, and a third oil duct communicated with the second oil duct, the second oil duct penetrates through the bottom of the sliding seat, and the third oil duct forms an oil filling hole in the sliding seat, so that lubricating oil can lubricate the sliding seat and the guide rail base. The invention adopts a fully-sealed structure, which can effectively improve the dustproof effect of the module; the guide rail base is provided with two rows of outer grooves, the sliding seat is provided with two rows of inner grooves, equal prepressing is applied, and rigidity in four directions is increased while a lower friction coefficient is maintained.

Description

A mobile platform assembly for linear module and linear module

technical field

The invention belongs to the field of mechanical equipment, and in particular, relates to a mobile platform assembly for a linear module and a linear module.

Background technique

Linear module is a kind of linear transmission device, which is widely used in the field of automation industry to realize linear motion device. At present, the linear modules on the market mainly include linear bearings, optical shafts, linear guide rails, ball screws, timing belts and other transmission combinations. A platform is guided by a servo motor or stepper motor to achieve linear reciprocating movement, thereby realizing position control and transmission. Control, according to the structure of the module, can be divided into steel structure module (referred to as kk module) and embedded module (referred to as kA module). However, the existing KK modules have shortcomings such as difficult processing, the guide rail should not be too long, heavy weight, high cost, and poor dust-proof effect. Accuracy, the guide rail should not be too long, the rigidity is insufficient, the installation occasion is limited, and the guide rail bonding reliability is poor.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a mobile platform assembly for a linear module, the first oil passage and the second oil passage communicate with each other, which can realize the lubrication of the mobile platform assembly; the second oil passage runs through the sliding seat, The lubrication of the linear module on which the moving platform assembly is installed can be realized, and a good oiling and lubrication environment can improve the service life of the product.

The solution adopted by the present invention to solve the above technical problems is a mobile platform assembly for a linear module. The mobile platform assembly includes a sliding seat and a cover plate fixedly arranged on the top of the sliding seat. The sliding seat has a first side surface and a second side surface opposite to the first side surface, and forming a mounting hole extending from the first side surface to the second side surface; the sliding seat is along the axial direction of the mounting hole No less than two first oil passages are provided, the first oil passages are symmetrically arranged on both sides of the mounting hole, and extend from the first side to the second side without penetrating the The second side surface; the sliding seat is provided with no less than two second oil passages along the radial direction of the mounting hole, the second oil passages open on the top surface of the sliding seat, and are provided by the sliding seat. The top surface of the seat extends toward the bottom surface of the sliding seat to be throughly connected with the first oil passage, and penetrates the sliding seat.

Preferably, the first oil passages are two, and the second oil passages are two.

With the above solution, the installation holes are used to fix and install the ball screw, and the ball screw drives the sliding of the mobile platform; the first oil passage and the second oil passage are throughly connected, so that the For the lubrication of the mobile platform assembly, under the condition of opening the cover, lubricating oil can be added through the opening of the second oil passage at the top of the sliding seat, so that the lubricating oil can enter the second oil passage to the first oil passage , lubricate the sliding seat; the second oil passage runs through the sliding seat, and can lubricate the linear module on which the moving platform assembly is installed. Specifically, the second oil passage is located in the sliding seat through the second oil passage The opening at the top is filled with lubricating oil, and the lubricating oil can flow into the guide rail base through the opening of the second oil passage at the bottom of the sliding seat, which can lubricate the guide rail base and improve the service life of the product; the setting of the cover plate can protect The sliding seat plays a dustproof effect, thereby improving the service life of the product.

Further, the sliding seat includes an engaging block for engaging and fixing with the cover plate, a middle block provided with the mounting hole, and inner sliders symmetrically arranged on both sides of the middle block; the middle block The side surface of the block is enclosed and formed by the first side surface, the second side surface, the third side surface, and the fourth side surface arranged opposite to the third side surface; the third side surface faces away from the engaging block The first sliding block is formed by extending in the direction away from the middle block, and the fourth side surface is extended in the direction away from the engaging block and the middle block to form a second sliding block. A sliding block is combined with the second sliding block to form the inner sliding block; the lower half of the sliding seat is inscribed from the first side surface toward the second side surface to form a first end surface, and the first end surface is inscribed. The length formed between the side surface and the second side surface is greater than the length formed between the first end surface and the second side surface, and the side of the first end surface close to the engaging portion includes a partial arc segment; so The cross section of the engaging block is "concave", and the lateral length of the bottom surface of the engaging block exceeds the top surface of the middle block.

With the above solution, the engaging portion is provided for engaging with the cover plate, and the sliding seat is closed through the engaging of the cover plate and the engaging portion, which has a dustproof effect. In this way, the service life of the product is improved; the middle block is provided with a mounting hole for installing a ball screw, and the ball screw drives the sliding of the mobile platform; the setting of the inner slider can realize the assembly of the mobile platform Sliding on the guide rail base; the formation of the first end face is conducive to the fixed installation of the ball circulator, and enhances the fit between the ball circulator and the sliding seat.

Further, no less than one oil filling hole is provided on either side of the engaging block, and the oil filling hole extends through the opposite side of the engaging block to form a third oil passage; the third oil passage is formed. The oil passage is connected with the second oil passage through; the cover plate is located at the oil filling hole after the cover plate is engaged with the engaging block, and the cover plate is provided with an opening.

Preferably, the oil filling hole is one.

With the above solution, the oil filling hole can be used to transport lubricating oil into the sliding seat and the guide rail base through the oil filling hole, and the operation can be performed without disassembling the side plate. A good oiling and lubrication environment can improve the product quality. service life.

Further, the first sliding block and the second sliding block are provided with no less than two through holes along the axial direction of the mounting hole.

Preferably, there are two through holes.

With the above solution, the arrangement of the through holes is used for the fixed installation of the ball circulator, so as to realize the cyclic movement of the balls.

The beneficial effects of the mobile platform assembly of the present invention:

(1) The first oil passage is connected with the second oil passage, and the second oil passage is connected with the third oil passage, so that the lubrication of the mobile platform assembly can be realized; The oil passage runs through the sliding seat, which can lubricate the linear module on which the moving platform assembly is installed, and specifically, lubricate the guide rail base to improve the service life of the product.

(2) The setting of the oil filling hole can transport the lubricating oil into the sliding seat and the guide rail base, and it can be operated without disassembling the side plate, and the operation is convenient.

The technical problem to be solved by the present invention also provides a closed-type high-rigidity precision linear module, including the above-mentioned moving platform assembly, while providing a good oiling and lubricating environment, the processing difficulty is reduced, the length of the grinding workpiece is increased, and the friction is low. Coefficient, low noise, high rigidity, good dustproof and sealing effect, and can reduce installation errors well, so as to achieve high-precision, smooth and stable linear motion. This product can be used in any position, especially it can be installed vertically and cantilevered. The center of gravity structure has a wide track width and a low overall height, so it can be used on a single axis in places where space saving or torque action is required and high rigidity is required.

The solution adopted by the present invention to solve the above technical problems is a closed high-rigidity precision linear module, which includes the above-mentioned mobile platform assembly, a guide rail base for sliding the mobile platform assembly, and a guide rail base installed on the mobile platform assembly. The ball screw; one end of the guide rail base close to the moving platform assembly is extended upward with a third slider that cooperates with the first slider and a fourth slider that cooperates with the second slider. , the third slider and the fourth slider are combined to form the outer slider; the ball screw includes a screw installed in the installation hole of the sliding seat, and a screw installed in the inner slider Several balls between the outer sliding block and the screw rod are fixedly installed in the mounting hole of the sliding seat through a nut.

At the same time, a drive motor is connected to the end of the ball screw extending from the fixed end of the ball screw, and the drive motor can drive the movement of the ball screw, thereby driving the sliding movement of the mobile platform assembly; The connection between the drive motor and the screw rod is covered with a motor protection cover, which can improve the service life of the product.

By adopting the above solution, the engaging installation of the outer slider and the inner slider can realize the sliding of the mobile platform assembly on the guide rail base; the setting of the ball screw can drive the movement of the mobile platform assembly Sliding movement. Specifically, the screw rod is installed on the sliding seat through the nut, which can realize the linear movement of the mobile platform assembly. The ball is arranged between the inner slider and the outer slider. The platform assembly can achieve linear motion on the track base through the movement of the balls.

Further, a ball circulator for rolling balls is installed on the sliding seat at the inner slider; one side of the ball circulator is extended to form a cylinder fixed with the through hole, and the same side extends A number of assemblies with rail grooves having the same length as the cylinder are formed; the ball circulator is symmetrically installed on both ends of the first sliding block and the second sliding block.

With the above solution, the arrangement of the assembly with the rail groove can fix the ball; the arrangement of the cylinder can realize the fixed connection between the ball circulator and the sliding seat.

Further, the outer slider is provided with not less than two outer grooves running through the outer slider for the rolling of the balls, and the inner slider is provided with not less than two grooves for the rolling of the balls. Two inner grooves running through the inner slider, after the inner slider is engaged with the outer slider, the inner groove and the outer groove are aligned to form a ball for ball rolling track.

Further, the outer groove is provided on a side of the third slider away from the fourth slider, and on a side of the fourth slider away from the third slider; the inner groove It is arranged on the side of the first slider close to the second slider and the side of the second slider close to the first slider.

Preferably, the outer slider is provided with two rows of outer grooves, and the inner slider is provided with two rows of inner grooves.

With the above solution, the formation of the ball track can realize the cyclic movement of the ball; the open arrangement of the outer groove effectively reduces the difficulty of grinding and increases the length of the grinding workpiece; the outer groove The groove and the inner groove are both in two rows, and equal preload is applied, which can not only maintain a low friction coefficient, but also increase the rigidity in four directions, and has self-aligning ability, which can reduce installation errors, thereby High-precision, smooth and stable linear motion is obtained; and the outer groove and the inner groove have a wide width and a low overall height center of gravity structure, so it can be used in places where space saving or torque action is required, and high rigidity is required. For single-axis use, especially vertical and cantilever mounting.

Further, the balls are evenly spaced by the ball synchronization cage, and the balls are installed on the ball synchronization cage to form a ball chain.

With the above solution, the ball synchronous retainer can be arranged so that the balls can be evenly spaced.

Further, one end of the guide rail base close to the second side is provided with a ball screw support end, and one end close to the first side is provided with a ball screw fixed end, and one end of the ball screw is connected to the The support end of the ball screw is movably connected, and the other end of the screw of the ball screw is movably connected to the fixed end of the ball screw, and penetrates the fixed end of the ball screw; the guide rail base is close to the third The side and both sides of the fourth side extend upward to form a side plate with an "L" shape in cross section, a steel belt is installed on the top end of the guide rail base, and both ends of the steel belt are respectively fixed on the ball wire The fixed end of the rod and the supporting end of the ball screw are partly located between the cover plate of the mobile platform assembly and the gap between the sliding seat; the steel belt, the guide rail base on which the side plate is arranged, the ball The support end of the screw and the fixed end of the ball screw form a closed structure.

With the above solution, the steel belt, the guide rail base provided with the side plate, the ball screw support end, and the ball screw fixed end form a closed structure, which can effectively improve the dustproof of the linear module. Effect.

Further, the side plate includes a second side plate with one end mounted on the guide rail base, and a first side plate detachably mounted on the second side plate; the first side plate and the The second side plate is fixedly connected by a snap connection, and a magnetic strip is installed at the butt joint of the first side plate and the second side plate; a silicone plate and a There are no less than two magnets, and correspondingly, the sliding seat is provided with no less than two magnet mounting holes; wherein, the steel strip is placed between the silica gel plate and the cover plate.

Specifically, buckles are provided at the butt joints of the first side plate and the second side plate, and the first side plate and the second side plate are fastened together through the buckle, and the tightness is good.

With the above solution, the side plate is set as a detachable first side plate and a second side plate, which is convenient for the locking installation of the linear module of the present invention. Yes; the magnetic strips at the butt joints of the first side plate and the second side plate are attracted to each other, which can make the cooperation between the first side plate and the second side plate more tightly, and facilitate assembly. The arrangement of the magnet between the sliding seat and the cover plate enhances the adsorption force to the steel belt, the sealing performance is strong, and the dustproof effect is increased; the arrangement of the silicone pad can effectively avoid the friction between the steel belt and the sliding seat. Sliding friction reduces running resistance and noise; the arrangement of the magnet mounting holes can make the magnet and the sliding seat adsorb tightly, and avoid noise caused by movement.

The beneficial effects of a closed high-rigidity precision linear module of the present invention:

(1) The enclosed high-rigidity precision linear module adopts a fully sealed structure, which effectively improves the dust-proof effect of the module.

(2) The guide rail base is provided with an open outer groove, which effectively reduces the difficulty of grinding and increases the length of the grinding workpiece.

(3) The guide rail base is provided with two rows of outer grooves, the sliding seat is provided with two rows of inner grooves, and equal preload is applied, which can not only maintain a low friction coefficient, but also increase the rigidity in four directions , has self-aligning ability, can reduce installation errors, so as to obtain high-precision, smooth and stable linear motion; and the outer groove and the inner groove have a wide range and a low overall height center of gravity structure, so it can be used when needed. Space saving or moment action, and single-axis use in places requiring high rigidity, especially vertical installation and cantilever installation.

Description of drawings

1 is an exploded view of a mobile platform assembly of the present invention;

Fig. 2 is the schematic diagram of the sliding seat of the present invention;

Fig. 3 is a partial cross-sectional view of the sliding seat of the present invention (which can reflect the through connection between the first oil passage and the second oil passage);

Fig. 4 is another partial cross-sectional view of the sliding seat of the present invention (which can reflect the through connection between the third oil passage and the second oil passage);

FIG. 5 is an exploded view of the enclosed high-rigidity precision linear module of the present invention;

6 is a schematic diagram of a closed high-rigidity precision linear module of the present invention;

Fig. 7 is the schematic diagram of the ball circulator of the present invention;

FIG. 8 is a schematic view of the assembly of the ball and the ball synchronization cage of the present invention;

Fig. 9 is the assembly schematic diagram of the sliding seat and the guide rail base of the present invention;

Figure 10 is a sectional view at A-A in Figure 9;

11 is a partial cross-sectional view of the enclosed high-rigidity precision linear module of the present invention;

Fig. 12 is a partial enlarged view at A in Fig. 11;

Fig. 13 is the assembly schematic diagram of the sliding seat and the guide rail base with side plate in the embodiment 2 of the present invention;

14 is an exploded view of the mobile platform assembly in Embodiment 2 of the present invention.

In the figure, the names of the parts corresponding to the reference numerals are: 1. Mobile platform assembly; 11. Cover plate; 12. Sliding seat; 121. Magnet mounting hole; 13. Engagement block; ; 141, the first side; 142, the second side; 143, the third side; 144, the fourth side; 145, the mounting hole; 15, the inner slider; 151, the first slider; 152, the second slider; 153, through hole; 154, inner groove; 16, first oil passage; 17, second oil passage; 18, first end face; 19, silicone plate; 19', magnet; 2, guide rail base; 21, outer sliding block; 211, the third slider; 212, the fourth slider; 213, the outer groove; 22, the side plate; 221, the first side plate; 222, the second side plate; 223, the magnetic strip; 224, the buckle ;23, Ball screw support end; 24, Ball screw fixed end; 25, Steel belt; 3, Ball screw; 31, Screw; 32, Ball; 33, Nut; 34, Ball synchronization retainer; 35, Ball chain; 4, ball track; 5, ball circulator; 51, cylinder; 52, component; 521, rail groove; 6, drive motor; 61, motor protective cover.

Detailed ways

The technical solutions of the present invention will be further described in detail below through the examples and in conjunction with the accompanying drawings.

Example 1:

As shown in Figures 1-2, the mobile platform assembly 1 of the present invention includes a sliding seat 12 and a cover plate 11, and the cover plate 11 is fixedly installed on the top of the sliding seat 12. The sliding seat 12 includes an engaging block 13, an intermediate block 14, and an inner sliding block 15. The engaging block 13 is used for engaging and fixed connection with the cover plate 11, and the intermediate block 14 includes a mounting block 14. The mounting hole 145 of the ball screw 3 and the inner slider 15 can realize the sliding movement of the mobile platform assembly 1 on the guide rail base 2 . The side surfaces of the middle block 14 include a first side surface 141, a second side surface 142 arranged opposite to the first side surface 141, a third side surface 143, and a fourth side surface 144 arranged opposite to the third side surface 143; The third side surface 143 extends in a direction away from the engaging block 13 and in a direction away from the middle block 14 to form a first sliding block 151 , and the fourth side surface 144 extends in a direction away from the engaging block 13 . and extending away from the middle block 14 to form a second sliding block 152, the first sliding block 151 and the second sliding block 152 are combined to form the inner sliding block 15; the middle block 14 includes the The first side surface 141 extends through the mounting hole 145 of the second side surface 142 , and the mounting hole 145 is used for cooperating with the ball screw 3 for mounting. The first sliding block 151 and the second sliding block 152 are provided with two through holes 153 along the axial direction of the installation hole 145, and the through holes 153 are used to install the ball circulator 5. In addition, the lower half of the sliding seat 12 is retracted from the first side surface 141 toward the second side surface 142 to form a first end surface 18 , and a first end surface 18 is formed between the first side surface 141 and the second side surface 142 . The length is greater than the length formed between the first end surface 18 and the second side surface 142 , the formation of the first end surface 18 is conducive to the fixed installation of the ball circulator 5 and enhances the relationship between the ball circulator 5 and the sliding seat 12 fit between.

As shown in FIGS. 3-4 , the sliding seat 12 of the present invention is provided with two first oil passages 16 along the axial direction of the installation hole 145 , and the first oil passages 16 are symmetrically arranged in the installation hole 145 The two sides of the sliding seat 12 extend from the first side surface 141 toward the second side surface 142 and do not penetrate the second side surface 142 ; The second oil passage 17, the second oil passage 17 is opened on the top surface of the sliding seat 12, and extends from the top surface of the sliding seat 12 toward the bottom surface of the sliding seat 12 to the An oil passage 16 is penetratingly connected and penetrates the sliding seat 12 ; an oil filling hole 131 is provided on either side of the engaging block 13 , after the cover plate 11 is engaged with the engaging block 13 , the The cover plate 11 is provided with an opening at the oil filling hole 131 , and the lubricating oil can be delivered to the sliding seat 12 and the guide rail base 2 through the oil filling hole 131 . The lubrication of the guide rail base 2 can be realized without disassembling the side plate 22, and the operation is convenient; and the oil filling hole 131 extends through the opposite side of the engaging block 13 to form the third oil passage 19, The third oil passage 19 is connected with the second oil passage 17; the first oil passage 16 is connected with the second oil passage 17, and the second oil passage 17 is connected with the third oil passage The through connection of 19 can ensure that after the lubricating oil is added from the oil filling hole 131, the lubricating oil can flow into the third oil passage 19, the second oil passage 17, and the first oil passage 16, so as to realize the Lubrication of the mobile sliding platform assembly 1; the second oil passage 17 runs through the sliding seat 12, which can ensure that the lubricating oil flows into the guide rail base 2, and realizes the lubrication of the linear module. A good lubrication environment can greatly improve the Product life.

As shown in Figures 5-6, a closed high-rigidity compact linear module of the present invention includes the above-mentioned mobile platform assembly 1, a guide rail base 2 for the sliding of the mobile platform assembly 1, and The ball screw 3 on the platform assembly 1, one end of the ball screw 3 is connected with a drive motor 6, and the drive motor 6 drives the movement of the ball screw 3, and the ball screw 3 can drive the Movement of the mobile platform assembly 1; one end of the ball screw 3 is connected to the support end 23 of the ball screw, after passing through the sliding seat 12, the other end is connected to the fixed end 24 of the ball screw, The fixed installation of the ball screw 3 is realized. One end of the guide rail base 2 close to the mobile platform assembly 1 extends upward with a third slider 211 that cooperates with the first slider 151 and slides, and a fourth slider 211 that cooperates and slides with the second slider 152 212, the third slider 211 and the fourth slider 212 are combined to form the outer slider 21; through the cooperation of the outer slider 21 and the inner slider 15, the mobile platform assembly can be guaranteed 1 sliding movement on the rail base 2. A ball circulator 5 is installed at both ends of the sliding seat 12 , and the ball 32 can be connected with the sliding seat 12 through the ball circulator 5 , and the sliding movement is driven by the cyclic movement of the ball 32 . Linear movement of the seat 12 on the guide rail base 2 .

As shown in FIG. 6 , one end of the guide rail base 2 of the present invention close to the second side 142 is provided with a ball screw support end 23 , and one end close to the first side 141 is provided with a ball screw fixed end 24 . One end of the screw 31 of the ball screw 3 is movably connected to the support end 23 of the ball screw, and the other end of the screw 31 of the ball screw 3 is movably connected to the fixed end 24 of the ball screw, and penetrates The fixed end 24 of the ball screw; the two sides of the guide rail base 2 close to the third side 143 and the fourth side 144 extend upward to form a side plate 22 with an "L"-shaped cross-section. A steel belt 25 is installed on the top of the base 2 , and the two ends of the steel belt 25 are respectively fixed on the fixed end 24 of the ball screw and the supporting end 23 of the ball screw, and are partially located on the side of the mobile platform assembly 1 . The gap between the cover plate 11 and the sliding seat 12; the steel belt 12, the guide rail base 2 provided with the side plate 22, the ball screw supporting end 23, and the ball screw fixing end 24 are closed The enclosed high-rigidity precision linear module adopts a fully sealed structure, which can effectively improve the dust-proof effect of the module.

As shown in FIGS. 7-8 , one side of the ball circulator 5 of the present invention extends to form a cylindrical body 51 that is fixed with the through hole 153 , and the same side extends to form a plurality of cylinders 51 having the same length as the cylindrical body 51 . The assembly 52 with the rail grooves 521 ; the balls 32 are evenly spaced by the ball synchronizing cage 34 , and the balls 32 are installed on the ball synchronizing cage 34 to form a ball chain 35 . The arrangement of the cylinder 51 in the ball circulator 5 can realize the fixed connection between the ball circulator 5 and the sliding seat 12; the arrangement of the component 52 with the rail groove 521 in the ball circulator 5 , the ball chain 35 can be fixed, and the fixed connection between the ball chain 35 and the sliding seat 12 can be realized through the ball circulator 5 .

As shown in FIGS. 9-10 , the guide rail base 2 and the sliding seat 12 of the present invention realize sliding movement through the cooperation of the outer sliding block 21 and the inner sliding block 15 ; the outer sliding block 21 includes The third sliding block 211 and the fourth sliding block 212 are arranged symmetrically in the longitudinal direction of the guide rail base 2 , and the inner sliding block 15 includes a first sliding block arranged symmetrically along the axial direction of the mounting hole 145 of the sliding seat 12 151 and the second sliding block 152 , wherein the third sliding block 211 is installed in cooperation with the first sliding block 151 , and the fourth sliding block 212 is installed in cooperation with the second sliding block 152 . The third sliding block 211 and the fourth sliding block 212 are both provided with two rows of outer grooves 213 running through the third sliding block 211 and the fourth sliding block 212 for the rolling of the balls 32 . , the outer groove 213 is open, which effectively reduces the difficulty of grinding and increases the length of the grinding workpiece; the first sliding block 151 and the second sliding block 152 are both provided for the ball 32 Two rows of rolling inner grooves 154 running through the first sliding block 151 and the second sliding block 152, after the inner sliding block 15 is engaged with the outer sliding block 21, the inner groove 154 and the outer groove 213 are aligned to form a ball track for the ball 32 to roll. Specifically, the outer groove 213 is disposed on the side of the third slider 211 away from the fourth slider 213 and the side of the fourth slider 213 away from the third slider 211 ; The inner groove 154 is disposed on the side of the first slider 151 close to the second slider 152 and the side of the second slider 152 close to the first slider 151; and the The outer groove 213 and the inner groove 154 are both in two rows, and equal preload is applied, which can not only maintain a low friction coefficient, but also increase the rigidity in four directions, and has self-aligning ability, which can reduce the installation error, so as to obtain high-precision, smooth and stable linear motion; and the outer groove 213 and the inner groove 154 have a wide range and a low overall height center of gravity structure, so it can save space or have torque when needed. And single-axis use in places requiring high rigidity, especially vertical installation and cantilever installation.

As shown in FIGS. 11-12 , the ball screw 3 of the present invention includes a screw 31 installed in the installation hole 145 of the sliding seat 12, and a plurality of balls 32 installed on the sliding seat 12; The screw rod 31 is fixedly installed in the mounting hole 145 of the sliding seat 12 through the nut 33; After the ball circulator 5 is fixed on the sliding seat 12 , it is integrally installed on the guide rail base 2 .

Example 2:

The structure of a closed high-rigidity tight linear module of the present embodiment is the same as the structure in the above-mentioned embodiment 1, and the difference lies in:

As shown in FIG. 13 , the side plate 22 provided on the rail base 2 is detachably installed, and the side plate 22 includes a second side plate 222 with one end mounted on the rail base 2, and a detachable The first side plate 221 installed on the second side plate 222 is convenient for the lock-up installation of the linear module of the present invention, and the second side plate 222 only needs to be removed during the lock-up installation. The first side plate 221 and the second side plate 222 are provided with buckles 224 at the joints. The first side plate 221 and the second side plate 222 are fastened together by the buckles 224, and the tightness is good. . Magnetic strips 223 are installed at the butt joints between the first side plate 221 and the second side plate 222 . The fit is tighter and easier to assemble.

As shown in FIG. 14 , a silica gel plate 19 and two magnets 19 ′ are sequentially installed between the cover plate 11 and the sliding seat 12 , and correspondingly, the sliding seat 12 is provided with two magnet mounting holes 121 ; Wherein, the steel strip 25 is placed between the silica gel plate 19 and the cover plate 11 . The arrangement of the magnet 19 ′ between the sliding seat 12 and the cover plate 11 enhances the adsorption force to the steel belt 25 , the sealing performance is strong, and the dustproof effect is increased; the arrangement of the silica gel plate 19 can effectively avoid the steel belt. The sliding friction between the 25 and the sliding seat 12 reduces running resistance and noise; the setting of the magnet mounting holes 121 can make the magnet 19' and the sliding seat 12 adsorb tightly to avoid noise caused by movement .

The working principle of the present invention:

The movement of the ball screw 3 is driven by the motor 6, thereby driving the sliding movement of the mobile platform assembly 1 on the guide rail base 2, so as to realize the operation of the linear module.

The working principle of the ball screw 3 driving the mobile platform assembly 1:

The screw rod 31 is installed on the sliding seat 12 through the nut 33 , specifically, assembled in the mounting hole 145 of the sliding seat 12 . After the motor 6 drives the screw rod 31 to move, it is installed on the sliding seat 12 . The nut 33 on the rod 31 can move linearly with the rotation of the lead screw 31 , and further can drive the sliding seat 12 to move linearly, so as to realize the linear movement of the mobile platform assembly 1 .

The working principle of the mobile platform assembly 1 sliding on the rail base 2:

The balls 32 form a ball chain 35 through the ball synchronous retainer 34 . The ball chain 35 is fixed and installed on the sliding seat 12 through the ball circulator 5 and can be cyclically moved. The sliding seat 12 and the guide rail The base 2 is assembled, and the linear movement of the mobile platform assembly 1 on the guide rail base 2 can be realized through the cyclic movement of the balls 32 .

The above embodiments specifically describe the present invention, are only used to further illustrate the function of the present invention, and should not be construed as limiting the protection scope of the present invention. Those skilled in the art make some non-essential changes according to the content of the present invention, which are all protection scope of the present invention.

Claims (10)

1. A mobile platform assembly for a linear module, characterized in that: the mobile platform assembly (1) comprises a sliding seat (12) and a cover plate (11) fixedly arranged on the top of the sliding seat (12) ), the sliding seat (12) has a first side surface (141), and a second side surface (142) opposite to the first side surface (141), and is formed to extend from the first side surface (141) to The mounting hole (145) of the second side surface (142); the sliding seat (12) is provided with no less than two first oil passages (16) along the axis of the mounting hole (145), so The first oil passages (16) are symmetrically arranged on both sides of the mounting hole (145), extend from the first side surface (141) toward the second side surface (142), and do not penetrate the first oil passage (145). Two side surfaces (142); the sliding seat (12) is provided with no less than two second oil passages (17) along the radial direction of the mounting hole (145), and the second oil passages (17) are open On the top surface of the sliding seat (12), and extending from the top surface of the sliding seat (12) toward the bottom surface of the sliding seat (12) to be in a through connection with the first oil passage (16), and penetrate the sliding seat (12). 2 . The mobile platform assembly according to claim 1 , wherein the sliding seat ( 12 ) comprises an engaging block ( 13 ) for engaging and fixing with the cover plate ( 11 ), and is provided with an engaging block ( 13 ). 3 . The middle block (14) of the installation hole (145), and the inner sliders (15) symmetrically arranged on both sides of the middle block (14); the side surface of the middle block (14) is defined by the first side surface ( 141), the second side surface (142), the third side surface (143), and the fourth side surface (144) arranged opposite to the third side surface (143) are enclosed and formed; the third side surface (143) A first sliding block (151) is formed by extending in a direction away from the engaging block (13) and in a direction away from the middle block (14), and the fourth side surface (144) is facing away from the engaging block The direction of (13) and the direction away from the middle block (14) extend to form a second sliding block (152), and the first sliding block (151) and the second sliding block (152) are combined to form the inner block (152). A sliding block (15); the lower half of the sliding seat (12) is retracted from the first side surface (141) toward the second side surface (142) to form a first end surface (18). The length formed between the side surface (141) and the second side surface (142) is greater than the length formed between the first end surface (18) and the second side surface (142); the engaging block (13) The cross section of the block is "concave", and the lateral length of the bottom surface of the engaging block (13) exceeds the top surface of the middle block (14). 3. A mobile platform assembly according to claim 2, wherein no less than one oil filling hole (131) is provided on any side of the engaging block (13), and the oil filling hole (131) ) extends through the opposite side of the engaging block (13) to form a third oil passage (19); the third oil passage (19) is connected through the second oil passage (17); the After the cover plate (11) is engaged with the engaging block (13), it is located at the oil filling hole (131), and the cover plate (11) is provided with an opening. 4. A mobile platform assembly according to claim 2, characterized in that: the first sliding block (151) and the second sliding block (152) are along the axis of the installation hole (145) No less than two through holes (153) are provided in the direction. 5. A closed-type high-rigidity precision linear module, characterized in that: comprising the mobile platform assembly (1) according to any one of the above claims 2-4, and a guide rail for the sliding of the mobile platform assembly (1) a base (2), and a ball screw (3) mounted on the moving platform assembly; the guide rail base (2) extends to form an outer sliding block (21) that cooperates with the inner sliding block (15) to slide; One end of the guide rail base (2) close to the moving platform assembly (1) is upwardly extended with a third sliding block (211) that cooperates with the first sliding block (151) to slide, and a third sliding block (211) that cooperates with the second sliding block (151). (152) a fourth sliding block (212) that cooperates with sliding, the third sliding block (211) and the fourth sliding block (212) are combined to form the outer sliding block (21); the ball screw ( 3) It includes a screw rod (31) installed in the installation hole (145) of the sliding seat (12), and a plurality of screw rods installed between the inner slider (15) and the outer slider (21). balls (32), and the screw rod (31) is fixedly mounted in the mounting hole (145) of the sliding seat (12) through a nut (33). 6 . The enclosed high-rigidity precision linear module according to claim 5 , wherein the sliding seat ( 12 ) is located at the inner sliding block ( 15 ) and is installed with the balls ( 32 ) for cyclic rolling. 7 . A ball circulator (5); one side of the ball circulator (5) extends to form a cylindrical body (51) that is fixed with the through hole (153), and the same side extends to form a cylindrical body (51) ) of the same length as several assemblies (52) with rail grooves (521); the ball circulator (5) is symmetrically installed on two sides of the first sliding block (151) and the second sliding block (152). end. 7 . The enclosed high-rigidity precision linear module according to claim 5 , wherein the outer slider ( 21 ) is provided with no less than two rows of vertical lines for the rolling of the balls ( 32 ). 8 . Passing through the outer groove (213) of the outer sliding block (21), the inner sliding block (15) is provided with no less than two rows of longitudinally penetrating the inner sliding block (15) for the rolling of the balls (32). 15) of the inner groove (154), after the inner slider (15) is engaged with the outer slider (21), the inner groove (154) and the outer groove (213) are aligned A ball track is formed for the balls (32) to roll; the outer groove (213) is provided on the side of the third slider (211) away from the fourth slider (213), and the fourth slider (213) The slider (213) is away from the side of the third slider (211); the inner groove (154) is arranged on a side of the first slider (151) close to the second slider (152). and the side of the second sliding block (152) close to the first sliding block (151). 8 . The enclosed high-rigidity precision linear module according to claim 5 , wherein the balls ( 32 ) are evenly spaced by the ball synchronization retainer ( 34 ), and the balls ( 32 ) are installed on the A ball chain (35) is formed on the ball synchronization retainer (34). 9. A closed type high-rigidity precision linear module according to claim 5, characterized in that: one end of the guide rail base (2) close to the second side surface (142) is provided with a ball screw support end (23) ), a ball screw fixed end (24) is set at one end close to the first side surface (141); one end of the ball screw (31) is movably connected with the ball screw support end (23), The other end of the screw (31) of the ball screw (3) is movably connected with the ball screw fixing end (24), and penetrates the ball screw fixing end (24); the guide rail base ( 2) Both sides close to the third side surface (143) and the fourth side surface (144) are extended upward to form a side plate (22) with an "L"-shaped cross section, and the top end of the guide rail base (2) A steel belt (25) is installed, two ends of the steel belt (25) are respectively fixed on the fixed end (24) of the ball screw and the supporting end (23) of the ball screw, and part of the steel belt (25) is located in the moving Between the cover plate (11) of the platform assembly (1) and the gap between the sliding seat (12); the steel belt (25), the guide rail base (2) provided with the side plate (22), the ball wire The rod supporting end (23) and the ball screw fixing end (24) form a closed structure. 10. The enclosed high-rigidity precision linear module according to claim 9, wherein the side plate (22) comprises a second side plate (222) one end of which is mounted on the guide rail base (2). ), and a first side plate (221) detachably mounted on the second side plate (222); the first side plate (221) and the second side plate (222) are snap-connected A magnetic strip (223) is installed at the butt joint of the first side plate (221) and the second side plate (222); the cover plate (11) and the sliding seat (12) are connected A silica gel plate (19) and no less than two magnets (19') are sequentially installed between them, and correspondingly, the sliding seat (12) is provided with no less than two magnet mounting holes (121); A steel strip (25) is placed between the silica gel plate (19) and the cover plate (11).

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