High-rigidity groove base guide rail linear motor module

Abstract

The utility model discloses a high-rigidity groove base guide rail linear motor module, and belongs to the field of linear motors. Comprising a sliding bedplate, a base, a magnetic track, a linear motor mover and a sliding structure, the linear motor mover is fixedly connected with the sliding bedplate, the magnetic track is fixedly connected with the base, the linear motor mover and the magnetic track are oppositely arranged, the base is of a flat-plate-shaped structure, a sliding groove is formed in the base, sliding feet are arranged at the bottom of the sliding bedplate, and the sliding feet are arranged in the sliding bedplate. The sliding foot and the sliding structure are both arranged in the sliding groove, and the sliding foot and the sliding groove are connected in a sliding mode through the sliding structure. Compared with an existing U-shaped base, the base is arranged to be of a flat-plate-shaped structure, the installation height of the sliding structure and the sliding platen can be reduced, flat design is achieved, the height of the guide groove is reduced, the guide rail groove of the base is not prone to deformation during integrated grinding, and the rigidity and stability of the whole module can be improved.

Description

Technical Field

[0001] The utility model belongs to the field of linear motor modules, and particularly relates to a high-rigidity groove base guide rail linear motor module. Background Art

[0002] See the instruction manual Figure 1 The existing patent with application number CN202022832475.0, the groove slide rail base integrated linear motor module is mainly composed of a groove slide base, a slider integrated ball sliding table, a linear motor mover, and a linear motor stator. The base cross-section is a U-shaped structure, consisting of a U-shaped profile base and a groove slide. The length can be set according to the needs of the linear motion stroke. The groove slide is embedded in the inner and outer sides of the two sliding feet of the U-shaped profile base, and is symmetrically distributed in parallel on the same horizontal line; the groove slide is finely ground after being embedded in the profile base to ensure the overall guiding accuracy of the base.

[0003] The ball sliding table is composed of a sliding table body and multiple groups of slider assemblies. Each group of slider assemblies is composed of rolling bodies, rolling body rotation groove guides, and return devices. The rolling bodies are composed of several balls arranged in a strip shape, and can circulate in a closed loop composed of rolling body return groove guides and return devices. There are multiple sliding feet under the sliding table body. Multiple groups of slider assemblies are respectively embedded in multiple sliding feet of the sliding table body, distributed in parallel on the same horizontal line, corresponding to the multiple rows of groove slides of the module base, and can roll along the corresponding groove slides with the sliding table at the same time, providing a guiding function for the sliding table in the direction of linear motion, and also supporting the sliding table and bearing the load; each ball is in two-point contact with the guide groove, and is cross-forced at an angle of ±45° to the horizontal. The 4 balls in the slider section are in 8-point contact support and guidance with the groove slide.

[0004] Although the existing groove slide rail base integrated linear motor module has realized the integrated production of the base guide, which greatly reduces the production and assembly costs of the linear module, and has formed products applied to the linear motion conditions of various automated equipment, there are still some problems that need to be optimized and improved during use: the base guide is a U-shaped structure, which leads to a high height of the sliding table and the ball track of the sliding structure. After the ball track of the rail is ground and formed, the relative position of the multiple rows of ball tracks is greatly affected by the strength of the profile, and the strength and stability of the profile are required to be high, and the overall structural rigidity of the module will be poor. Utility Model Content

[0005] In order to solve the above problems, the purpose of the utility model is to provide a high-rigidity groove base guide linear motor module, which can improve the structural rigidity and precision stability of the groove-guided integrated base guide linear module.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] The utility model provides a high-rigidity groove base guide linear motor module, including: a sliding table, a base, a magnetic rail, a linear motor mover, and a sliding structure, wherein the linear motor mover is fixedly connected to the sliding table, the magnetic rail is fixedly connected to the base, the linear motor mover and the magnetic rail are arranged opposite to each other, the base is a flat plate structure, a slide groove is arranged on the base, a sliding foot is arranged at the bottom of the sliding table, the sliding foot and the sliding structure are both arranged in the slide groove, and the sliding foot and the slide groove are slidably connected through the sliding structure. Compared with the existing "concave" base, the present application realizes a flat design by setting the base into a flat plate structure, which can reduce the installation height of the sliding structure and the sliding table, and can improve the rigidity and stability of the entire module.

[0008] Furthermore, the side wall of the slide groove is inwardly recessed with a groove, and the sliding structure includes a rolling body, a guide rail, and a reflow device; the sliding foot is respectively provided with grooves at the corresponding groove positions, the guide rail is arranged in the groove and the groove to form a rolling body channel, the reflow device is arranged inside the sliding foot, the reflow device and the rolling body channel form a closed loop, and the rolling body rolls in the closed loop. In the present application, the base is a flat plate structure, the groove height of the base guide rail is reduced and close to the bottom surface, the base guide rail groove is not easy to deform during integrated grinding, the precision is more stable, and the rigidity is stronger.

[0009] Furthermore, there are multiple slide grooves, and the multiple slide grooves are arranged side by side. There are multiple sliding feet, and the multiple sliding feet are respectively connected to the multiple slide grooves in a one-to-one sliding manner through a sliding structure; the returner is an "I"-shaped structure, and two side-by-side reflux channels are arranged in the returner, and each sliding structure is provided with two guide rails, and one groove is respectively arranged on the side walls on both sides of the groove, and all the grooves are symmetrically and parallelly distributed on the same horizontal line, and a guide rail is respectively arranged in each groove, and each guide rail cooperates with a reflux channel, and each sliding structure is provided with two groups of rolling bodies, and the two groups of rolling bodies are respectively arranged one-to-one in the two groups of reflux channels. Through the above design, the original multiple independent returners are combined, the number of returners is halved, and the size of the ball sliding table is also compressed while reducing the number of parts; the structure is simplified, the assembly is convenient, the weight of the moving part of the linear module is reduced, and the operating load is smaller; at the same time, the multiple rows of guide rails are matched inside and outside to strengthen the pre-load of the steel ball rolling body, improve the rigidity of the module operation, and ensure the stability of the guide. It is suitable for heavy load or high acceleration, and has a certain impact operating conditions. The module has a shorter setting time in place.

[0010] Furthermore, two slide grooves and two slide feet are provided, and the two slide feet are respectively connected to the two slide grooves in a one-to-one sliding manner through a sliding structure. In the same cross section, the original four groups of independent returners can be combined into two groups, and the number of returners is halved, which can simplify the structure and improve the rigidity.

[0011] Furthermore, a mounting groove is provided between the two slide grooves, the magnetic track is provided in the mounting groove, and the bottom of the magnetic track is fixedly connected to the bottom wall of the mounting groove, and the upper surface of the magnetic track is flush with the upper surface of the base. In the present application, the magnetic track of the linear motor is provided in the middle of the base of the module, and the magnetic track is fixed upward by the bottom screws. Compared with the magnetic track of the conventional linear motor, the mounting holes on both sides are cancelled, and the overall width of the magnetic track is narrower, which is conducive to the compression of the overall width of the module; the upper surface of the magnetic track is coplanar with the base, which can prevent foreign matter from accumulating on the surface of the magnetic track and jamming the motor operation.

[0012] Furthermore, buffer seats are provided at the front and rear ends of the slide groove, buffer rubber is provided on the buffer seat, and the buffer rubber is arranged relative to the sliding platform.

[0013] Furthermore, a linear encoder ruler is installed on the side wall of the base, and a linear encoder reading head matched with the linear encoder ruler is installed on the side wall of the sliding table. The two cooperate to provide closed-loop position feedback in the linear direction for the module.

[0014] Furthermore, an oil filling cup and an oil path connected to the sliding foot are arranged on the side wall of the sliding table. Lubricating grease can be filled into the reflux device through the oil filling cup to lubricate the sliding between the ball bearing and the guide rail.

[0015] Furthermore, a receiving groove is provided at the bottom of the sliding table, and the linear motor mover is installed in the receiving groove and is integrally formed with the sliding table by glue pouring.

[0016] Furthermore, the inner side wall of the receiving groove is recessed inward to form a clamping groove. When the linear motor mover and the sliding table are integrally glued, part of the glue will flow into the clamping groove, which can prevent the linear motor mover from being separated from the sliding table housing after the linear motor mover glue is cured.

[0017] Furthermore, the linear motor of the present application has the following advantages compared with the prior art:

[0018] 1. Adopting the guidance method of multiple rows of rails divided into multiple groups:

[0019] Through such a design, the original multiple groups of independent returners are combined, the number of returners is halved, and the size of the ball sliding table is also compressed while reducing the number of parts; the structure is simplified, the assembly is convenient, the weight of the moving part of the linear module is reduced, and the operating load is smaller; at the same time, the multiple rows of guide rails are matched inside and outside to strengthen the pre-load of the steel ball rolling body, improve the rigidity of the module operation, and ensure the stability of the guide. It is suitable for heavy load or high acceleration, and has a certain impact operating conditions. The module has a shorter setting time in place.

[0020] 2. Flat design of groove base rail:

[0021] The base is no longer a U-shaped cavity structure, but a flat structure. The guide rail is further developed into the bottom surface, realizing a flat design and reducing the height of the guide groove. The guide groove of the base is not easily deformed during integrated grinding, and the precision is more stable and the rigidity is stronger.

[0022] 3. The sliding table shell and the linear motor mover are integrated by glue filling:

[0023] The cavity design of the sliding table shell can realize the integrated packaging of the coil of the linear motor mover and the sliding table, eliminating the steps of producing the mover through a glue pouring mold and then assembling the mover with the sliding table, and the production process is simpler; the inner wall of the bottom of the sliding table is recessed inward to form a groove, and when the linear motor mover and the sliding table are integrally glued, part of the glue will flow into the groove, which can prevent the linear motor mover from detaching from the sliding table shell after the glue of the linear motor mover is cured, and the connection is tighter, and the structural strength and connection rigidity of the ball bearing sliding table are also improved.

[0024] 4. Lower combination height:

[0025] The height of the groove ball track is lowered in the present application, and the height of the base is also lowered. The sliding table and the mover are integrally glued to reduce the thickness of the sliding table. The overall height of the combined module is lowered, solving the previous top-heavy problem and providing a more stable center of gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a groove base guide rail linear motor module in the prior art.

[0027] Figure 2 It is a schematic structural diagram of the high-rigidity groove base guide linear motor module of this embodiment.

[0028] Figure 3 yes Figure 2 Exploded diagram.

[0029] Figure 4 It is a cross-sectional view of this embodiment.

[0030] Figure 5It is a structural schematic diagram of a sliding table.

[0031] Figure 6 It is a structural diagram of the reflux device. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0033] To achieve the above purpose, the technical solution of the utility model is as follows:

[0034] See also Figure 1-6 As shown, the present embodiment provides a high-rigidity groove base guide linear motor module, including: a sliding table 1, a base 2, a magnetic rail 3, a linear motor mover 4, and a sliding structure 5. The linear motor mover 4 is fixedly connected to the sliding table 1, the magnetic rail 3 is fixedly connected to the base 2, the linear motor mover 4 and the magnetic rail 3 are arranged opposite to each other, the base 2 is a flat plate structure, a slide groove 21 is arranged on the base 2, a sliding foot 11 is arranged at the bottom of the sliding table 1, the sliding foot 11 and the sliding structure 5 are both arranged in the slide groove 21, and the sliding foot 11 and the slide groove 21 are slidably connected through the sliding structure 5. Compared with the existing "concave" base 2, the present application realizes a flat design by setting the base 2 into a flat plate structure, which can reduce the installation height of the sliding structure 5 and the sliding table 1, and can improve the rigidity and stability of the entire module.

[0035] Furthermore, the side wall of the slide 21 is recessed inwardly to form a groove 22, and the sliding structure 5 includes a rolling body 51, a guide rail 52, and a reflow device 53; the sliding foot 11 is respectively provided with a groove 12 at the position corresponding to the groove 22, and the guide rail 52 is arranged in the groove 22 and the groove 12 to form a rolling body 51 channel, and the reflow device 53 is arranged inside the sliding foot 11, and the reflow device 53 and the rolling body 51 channel form a closed loop, and the rolling body 51 rolls in the closed loop. In the present application, the base 2 is a flat plate structure, and the height of the groove 22 of the guide rail 52 of the base 2 is reduced and close to the bottom surface. The groove 22 of the guide rail 52 of the base 2 is not easy to deform during integrated grinding, and the precision is more stable and the rigidity is stronger.

[0036] Furthermore, two slide grooves 21 are provided, and the two slide grooves 21 are arranged side by side. Two sliding feet 11 are provided, and the two sliding feet 11 are respectively connected to the two slide grooves 21 in a one-to-one sliding manner through the sliding structure 5; the returner 53 is an "I"-shaped structure, and two side-by-side reflux channels 54 are provided in the returner 53. Each sliding structure 5 is provided with two guide rails 52, and a groove 22 is respectively provided on the side walls on both sides of the groove 22, and all the grooves 22 are symmetrically and parallelly distributed on the same horizontal line. A guide rail 52 is respectively provided in each groove 22, and each guide rail 52 is matched with a reflux channel 54. Each sliding structure 5 is provided with two groups of rolling bodies 51, and the two groups of rolling bodies 51 are respectively arranged one-to-one in the two groups of reflux channels 54. Through the above design, the original four groups of independent returners 53 are combined, the number of returners 53 is halved, and the size of the ball sliding table 1 is also compressed while reducing the number of parts; the structure is simplified, the assembly is convenient, the weight of the moving part of the linear module is reduced, and the operating load is smaller; at the same time, the four rows of guide rails 52 are matched inside and outside to strengthen the pre-pressure of the steel ball rolling body 51, improve the rigidity of the module operation, ensure the stability of the guide, and are suitable for heavy loads or high accelerations, and certain impact operating conditions. The module has a shorter setting time in place.

[0037] Furthermore, a mounting groove 23 is provided between the two slide grooves 21, the magnetic track 3 is provided in the mounting groove 23, and the bottom of the magnetic track 3 is fixedly connected to the bottom wall of the mounting groove 23, and the upper surface of the magnetic track 3 is flush with the upper surface of the base 2. In the present application, the magnetic track 3 of the linear motor is provided in the middle of the module base 2, and the magnetic track 3 is fixed upward by the bottom screws. Compared with the conventional linear motor magnetic track 3, the mounting holes on both sides are cancelled, and the overall width of the magnetic track 3 is narrower, which is conducive to the compression of the overall width of the module; the upper surface of the magnetic track 3 is coplanar with the base 2, which can prevent foreign matter from accumulating on the surface of the magnetic track 3 and jamming the motor operation.

[0038] Furthermore, buffer seats 8 are provided at the front and rear ends of the slide groove 21 , and buffer rubbers 9 are provided on the buffer seats 8 . The buffer rubbers 9 are arranged relative to the sliding platform 1 .

[0039] Furthermore, a linear encoder ruler 6 is installed on the side wall of the base 2, and a linear encoder reading head 7 matched with the linear encoder ruler 6 is installed on the side wall of the sliding table 1. The two cooperate to provide closed-loop position feedback in the linear direction for the module.

[0040] Furthermore, an oiling cup and an oil path connected to the sliding foot 11 are provided on the side wall of the sliding table 1. Lubricating grease can be added to the inside of the returner 53 through the oiling cup to lubricate the sliding between the ball bearing and the guide rail 52.

[0041] Furthermore, a receiving groove 13 is provided at the bottom of the sliding table 1 , and the linear motor mover 4 is installed in the receiving groove 13 and is integrally formed with the sliding table 1 by glue injection.

[0042] Furthermore, the inner side wall of the receiving groove 13 is recessed inward to form a clamping groove 14. When the linear motor mover 4 and the sliding table 1 are integrally glued, part of the glue will flow into the clamping groove 14, which can prevent the linear motor mover 4 from being separated from the housing of the sliding table 1 after the glue is cured.

[0043] Furthermore, the linear motor of the present application has the following advantages compared with the prior art:

[0044] 1. Adopting the guiding method of four rows of rails divided into four groups:

[0045] Through such a design, the original four groups of independent returners 53 are combined, the number of returners 53 is halved, and while reducing the number of parts, the size of the ball sliding table 1 is also compressed; the structure is simplified, the assembly is convenient, the weight of the moving part of the linear module is reduced, and the operating load is smaller; at the same time, the four rows of guide rails 52 are matched inside and outside to strengthen the pre-compression of the steel ball rolling body 51, improve the rigidity of the module operation, ensure the stability of the guide, and are suitable for heavy loads or high accelerations, and certain impact operating conditions. The module has a shorter setting time in place.

[0046] 2. Flat design of groove 22 base 2 guide rail 52:

[0047] The base 2 is no longer a U-shaped cavity structure, but a flat plate structure. The guide rail 52 is further extended to the bottom surface to achieve a flat design, which reduces the height of the guide groove 22. The groove 22 of the guide rail 52 of the base 2 is not easily deformed during integrated grinding, and the accuracy is more stable and the rigidity is stronger.

[0048] 3. The housing of the sliding table 1 and the linear motor mover 4 are integrated by glue filling:

[0049] The cavity design of the sliding table 1 shell can realize the integrated packaging of the coil of the linear motor mover 4 and the sliding table 1, eliminating the step of producing the mover through a glue-filling mold and then assembling the mover with the sliding table 1, and the production process is simpler; the inner wall of the bottom of the sliding table 1 is recessed inward to form a slot 14, and when the linear motor mover 4 and the sliding table 1 are integrally glue-filled, part of the glue will flow into the slot 14, which can prevent the linear motor mover 4 from detaching from the sliding table 1 shell after the glue is poured and cured. The connection is tighter, and the structural strength and connection rigidity of the ball bearing sliding table 1 are also improved.

[0050] 4. Lower combination height:

[0051] The height of the ball track of the groove 22 is lowered in the present application, and the height of the base 2 is also lowered. The sliding table 1 and the mover are integrally glued to reduce the thickness of the sliding table 1. The overall height of the combined module is lowered, solving the previous top-heavy problem and providing a more stable center of gravity.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-rigidity groove base guide rail linear motor module, characterized in that: include: A sliding table, a base, a magnetic rail, a linear motor mover, and a sliding structure, wherein the linear motor mover is fixedly connected to the sliding table, the magnetic rail is fixedly connected to the base, the linear motor mover and the magnetic rail are arranged opposite to each other, the base is a flat plate structure, a slide groove is arranged on the base, a sliding foot is arranged at the bottom of the sliding table, the sliding foot and the sliding structure are both arranged in the slide groove, and the sliding foot and the slide groove are slidably connected through the sliding structure.

2. A high-rigidity groove base guide rail linear motor module as claimed in claim 1, characterized in that: The side wall of the slide groove is recessed inwardly to form a groove, and the sliding structure includes a rolling body, a guide rail, and a reflow device; the sliding foot is respectively provided with grooves at the positions corresponding to the grooves, the guide rails are arranged in the grooves and the grooves to form a rolling body channel, the reflow device is arranged inside the sliding foot, the reflow device and the rolling body channel form a closed loop, and the rolling body rolls in the closed loop.

3. A high rigidity groove base guide rail linear motor module as claimed in claim 2, characterized in that: There are multiple slide grooves, and the multiple slide grooves are arranged side by side. There are multiple sliding feet, and the multiple sliding feet are connected to the multiple slide grooves in a one-to-one sliding manner through the sliding structure; the returner is an "I"-shaped structure, and two side-by-side reflux channels are arranged in the returner. Each sliding structure has two guide rails, and one groove is respectively arranged on the side walls on both sides of the groove, and all the grooves are symmetrically distributed in parallel on the same horizontal line. A guide rail is respectively arranged in each groove, and each guide rail cooperates with a reflux channel. There are two groups of rolling bodies in each sliding structure, and the two groups of rolling bodies are respectively arranged one-to-one in the two groups of reflux channels.

4. A high rigidity groove base guide rail linear motor module as claimed in claim 3, characterized in that: The slide grooves and the slide feet are both provided with two, and the two slide feet are respectively connected to the two slide grooves in a one-to-one sliding manner through the sliding structure.

5. A high rigidity groove base guide rail linear motor module as claimed in claim 4, characterized in that: An installation groove is arranged between the two slide grooves, the magnetic rail is arranged in the installation groove, the bottom of the magnetic rail is fixedly connected to the bottom wall of the installation groove, and the upper surface of the magnetic rail is flush with the upper surface of the base.

6. A high rigidity groove base guide rail linear motor module as claimed in claim 1, characterized in that: Buffer seats are arranged at the front and rear ends of the slide groove, and buffer rubber is arranged on the buffer seat. The buffer rubber is arranged relative to the sliding platform.

7. A high rigidity groove base guide rail linear motor module as claimed in claim 1, characterized in that: A linear coding ruler is installed on the side wall of the base, and a linear coding reading head matched with the linear coding ruler is installed on the side wall of the sliding table.

8. A high rigidity groove base guide rail linear motor module as claimed in claim 1, characterized in that: An oil filling cup and an oil passage which are in communication with the sliding foot are arranged on the side wall of the sliding table.

9. A high rigidity groove base guide rail linear motor module as claimed in claim 1, characterized in that: A receiving groove is provided at the bottom of the sliding table, and the linear motor mover is installed in the receiving groove and is integrally formed with the sliding table by glue injection.

10. A high rigidity groove base guide rail linear motor module as claimed in claim 9, characterized in that: The inner side wall of the accommodating groove is recessed inward to form a clamping groove.

Images