A sliding table structure for a linear module

Abstract

The utility model discloses a sliding table structure for linear module, including mounting seat and bearing seat, be equipped with mounting hole on the mounting seat, be equipped with internal thread on the inner wall of mounting hole, the both sides of mounting seat are equipped with the arc recess for containing the steel ball of linear module respectively, and the bearing seat is established at the top of mounting seat, and the both sides of bearing seat are equipped with boss part respectively, and the boss part is along the length direction arrangement of mounting seat. The utility model discloses a sliding table structure, because mounting seat is provided with internal thread, and the screw rod of linear module is placed in the internal thread on mounting seat, because the screw rod of linear module is connected through the thread with mounting seat, so can make the hole diameter of mounting hole on mounting seat and the outer diameter of screw rod are equivalent, effectively reduce the size of mounting seat in the longitudinal direction, thereby reduce the size of sliding table structure whole in the longitudinal direction, so can make sliding table structure applicable to the application scene of smaller space.

Description

Technical Field

[0001] This utility model relates to a slide structure for a linear module. Background Technology

[0002] In a linear module (also known as a linear slide), the slide is the core actuator, and its functions include: 1. bearing the load and connecting the working parts; 2. providing precise guidance along the guide rail to ensure the motion trajectory; and 3. transmitting power to achieve linear drive.

[0003] In existing linear modules, the slide and lead screw are installed as follows: a mounting hole is set on the slide, and a nut structure is screwed onto the lead screw. The nut structure is fixed in the mounting hole on the slide. When the lead screw rotates, the slide moves back and forth along the lead screw. Because the nut structure screwed onto the lead screw needs to be fixed in the mounting hole of the slide, there must be at least a difference in the wall thickness of the nut structure between the diameter of the mounting hole and the outer diameter of the lead screw. This results in a large diameter of the mounting hole on the slide, which in turn results in a large longitudinal dimension of the slide. For some specific applications, the installation and use of slides with large longitudinal dimensions will be limited. Moreover, if the slide is subjected to external impact during sliding, the nut structure on the lead screw is prone to deformation, which will affect the accuracy of the slide's reciprocating movement. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a slide structure for a linear module.

[0005] According to one aspect of the present invention, a slide structure for a linear module is provided, comprising:

[0006] The mounting base has mounting holes arranged along its length. The inner walls of these mounting holes have internal threads adapted to the lead screw of the linear module. The mounting base also has arc-shaped grooves on both sides for accommodating the steel balls of the linear module.

[0007] The support base is located on the top of the mounting base. The support base has protrusions on both sides for mounting the cover of the linear module. The protrusions are arranged along the length of the mounting base.

[0008] The sliding table structure of this utility model has arc-shaped grooves on both sides of the mounting base to accommodate steel balls that reduce the friction between the sliding table structure and the profile structure. The boss on the bearing base is used to fix the cover. Since the mounting base is provided with internal threads, the lead screw of the linear module is screwed into the internal threads on the mounting base. Because the lead screw of the linear module is connected to the mounting base by threads, the diameter of the mounting hole on the mounting base can be made to be similar to the outer diameter of the lead screw (the diameter of the mounting hole is slightly larger than the outer diameter of the lead screw), which effectively reduces the longitudinal dimension of the mounting base, thereby reducing the overall longitudinal dimension of the sliding table structure. This makes the sliding table structure suitable for applications with limited space. Moreover, because the lead screw of the linear module is connected to the mounting base by threads, even if the sliding table structure is subjected to external impacts during reciprocating movement, the nut structure on the lead screw will not easily deform, thus ensuring the accuracy of the reciprocating movement of the sliding table structure.

[0009] Preferably, it further includes two return valves. The mounting base has through holes arranged along its length. A first receiving cavity is provided on the inner wall of one end of the mounting hole. The first receiving cavity is located at one end of the internal thread and communicates with one end of the through hole. A second receiving cavity is provided on the inner wall of the other end of the mounting hole. The second receiving cavity is located at the other end of the internal thread and communicates with the other end of the through hole.

[0010] The return valve has grooves.

[0011] A reflux circulator is housed in a first receiving cavity. One end of the reflux circulator's groove communicates with a first threaded groove at one end of an internal thread, and the other end of the reflux circulator's groove communicates with one end of a through hole.

[0012] Another return valve is housed in the second accommodating cavity. One end of the groove of the return valve is connected to the second thread groove 1 at the other end of the internal thread, and the other end of the groove of the return valve is connected to the other end of the through hole.

[0013] Therefore, spiral grooves can be formed on the lead screw of the linear module. The cross-section of the grooves is arc-shaped or semi-circular. The arrangement of the grooves is adapted to the internal thread. The groove of one return device, the thread groove of the internal thread, the groove of another return device, the through hole and the groove on the lead screw can form a closed channel. Multiple steel balls are placed in this channel. In this way, the groove on the lead screw is threadedly connected to the internal thread through the steel balls. The steel balls can ensure that the slide structure slides smoothly along the lead screw and the accuracy of the slide structure's reciprocating movement can be guaranteed. Moreover, if the slide structure is subjected to external impact during the reciprocating movement, it will not easily affect the accuracy of the slide structure's reciprocating movement.

[0014] Preferably, the cross-section of the thread groove of the internal thread is arc-shaped, and the cross-section of the groove is arc-shaped.

[0015] Therefore, this ensures that the steel balls roll smoothly in the channels of the grooves of the two return valves, the screw grooves of the internal threads, and the grooves on the lead screw, so that the slide structure can slide smoothly back and forth along the lead screw.

[0016] Preferably, the return valve has an arc-shaped surface with a blocking protrusion on the arc-shaped surface. The arc-shaped surface is flush with the thread portion of the internal thread, and the blocking protrusion is located between two adjacent threads of the internal thread.

[0017] Therefore, the fact that the arc-shaped surface is flush with the threaded portion of the internal thread can prevent interference between the arc-shaped surface and the lead screw. The blocking protrusion located between two adjacent threaded teeth of the internal thread can ensure that the steel ball circulates and rolls in the closed channel formed by the groove of the return valve, the threaded groove of the internal thread, the through hole and the groove wall on the lead screw without falling out.

[0018] Preferably, both ends of the through hole are provided with stepped portions, and the end face of the return valve is provided with a plug-in portion, which is located on the periphery of the port of the groove and is plugged into the stepped portion.

[0019] Therefore, the reflux device can be securely installed in the first and second accommodating cavities through the insertion and engagement of the plug-in portion and the stepped portion.

[0020] Preferably, the top of the support seat is provided with an arc-shaped support surface, which is located between the two protrusions.

[0021] Therefore, the arc-shaped bearing surface is used to overlap the dustproof steel strip on the enclosed linear module.

[0022] Preferably, the distance from the bottom of the mounting base to the top of the support base is 42.7~42.72mm.

[0023] Therefore, since the lead screw of the linear module is screwed into the internal thread on the mounting base, the height of the slide structure can be controlled at 42.7~42.72mm, which is much lower than the height of the slide structure in existing linear modules of the same type.

[0024] Preferably, the height of the mounting base is 31.2~31.22mm and the width of the mounting base is 48.4±0.015mm.

[0025] Therefore, since the lead screw of the linear module is screwed into the internal thread of the mounting base, the height of the mounting base can be controlled at 31.2~31.22mm and the width can be controlled at 48.4±0.015mm, which is much lower than the height and width of the mounting base in existing linear modules of the same type.

[0026] Preferably, the height of the support base is 11.5 mm and the width of the support base is 74~74.02 mm.

[0027] Therefore, a support base with a height of 11.5mm and a width of 74~74.02mm can ensure that the overall height and maximum width of the slide structure meet the design requirements, making the slide structure suitable for applications with limited space.

[0028] Preferably, the mounting base and the bearing base are integrally formed, and both the mounting base and the bearing base are made of 20CrMo or GCR15.

[0029] Therefore, using 20CrMo or GCR15 material can ensure the strength and hardness of the one-piece molded mounting base and bearing base, guaranteeing the service life of the slide structure. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a slide structure for a linear module according to one embodiment of the present invention;

[0031] Figure 2 for Figure 1 A schematic diagram of the slide structure from another perspective;

[0032] Figure 3 for Figure 1 A schematic diagram of the slide structure from another perspective;

[0033] Figure 4 This is a schematic diagram of a slide structure for a linear module, representing another embodiment of the present invention.

[0034] Figure 5 for Figure 4 A schematic diagram of the slide structure from another perspective;

[0035] Figure 6 for Figure 5 The diagram shows a cross-sectional view of the slide structure along the AA direction.

[0036] Figure 7 for Figure 4 The diagram shows the disassembled structure of the slide table.

[0037] Figure 8 for Figure 4 A schematic diagram of the disassembled structure of the slide table structure from another perspective;

[0038] Figure 9 for Figure 4 A schematic diagram of the reflux device in the slide structure shown;

[0039] Figure 10 for Figure 9 The diagram shows a structural schematic of the reflux device from another perspective. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0041] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0042] Example 1:

[0043] See Figures 1 to 3 A slide structure for a linear module includes a mounting base 1 and a support base 2.

[0044] See Figures 1 to 3 Mounting base 1 has mounting holes 11 formed on it, which are arranged along the length of mounting base 1. The inner wall of mounting hole 11 has an internal thread 12 formed on it, which is adapted to the lead screw of the linear module. The lead screw of the linear module has an external thread formed on it that is threaded to the internal thread 12. The lead screw of the linear module can be screwed into the internal thread 12 on mounting base 1. This eliminates the traditional nut structure on the lead screw of the linear module. In the traditional case, a nut structure is screwed onto the lead screw and fixed in the mounting hole 11 of mounting base 1. Since the lead screw of the linear module is connected to mounting base 1 by a thread, the diameter of the mounting hole 11 on mounting base 1 can be made to be similar to the outer diameter of the lead screw (the diameter of the mounting hole 11 is slightly larger than the outer diameter of the lead screw). This effectively reduces the longitudinal dimension of mounting base 1, thereby reducing the overall longitudinal dimension of the slide structure. This makes the slide structure suitable for applications with limited space.

[0045] See Figures 1 to 3 The mounting base 1 has arc-shaped grooves 13 formed on both sides. The arc-shaped grooves 13 are used to accommodate the steel balls of the linear module. In the linear module, the slide structure is installed in a U-shaped profile. Steel balls are installed between the two sides of the slide structure and the inner wall of the profile to reduce the friction between the slide structure and the profile.

[0046] See Figures 1 to 3The support seat 2 is set on the top of the mounting seat 1. The mounting seat 1 and the support seat 2 are integrally formed. The integrally formed mounting seat 1 and the support seat 2 can ensure the overall strength of the slide structure. The support seat 2 has a boss 21 formed on both sides. The boss 21 is arranged along the length of the mounting seat 1. The boss 21 is used to install the cover of the linear module. Each boss 21 has multiple (e.g., three) threaded fixing holes (not shown). The threaded fixing holes are used to fix the cover of the linear module. The cover of the linear module can be firmly installed on the boss 21 on the support seat 2 by multiple screws.

[0047] See Figure 1 The top of the support seat 2 is formed with an arc-shaped support surface 22, which is located between two protrusions 21. The arc-shaped support surface 22 is arched, and the height of the middle part of the arc-shaped support surface 22 is higher than the height of the two ends of the arc-shaped support surface 22. The arc-shaped support surface 22 is used to overlap the dustproof steel strip on the closed linear module. The arched arc-shaped support surface 22 can prevent the end of the support seat 2 from scratching the dustproof steel strip when the slide structure moves back and forth along the screw.

[0048] The side of the boss portion 21 is formed with an oil injection hole (not shown), which is connected to the mounting hole 11. Lubricating oil can be injected into the lead screw in the mounting hole 11 through the oil injection hole to ensure that the lead screw and the internal thread 12 in the mounting hole 11 are smoothly engaged.

[0049] Both mounting base 1 and bearing base 2 are made of 20CrMo or GCR15. The slide structure made of 20CrMo or GCR15 can ensure the strength and hardness of mounting base 1 and bearing base 2, and guarantee the service life of the slide structure.

[0050] See Figure 2 and Figure 3 In this embodiment, the distance from the bottom of the mounting base 1 to the top of the bearing base 2 (the top of the boss portion 21) is 42.7~42.72mm. Since the lead screw of the linear module is screwed into the internal thread 12 on the mounting base 1, the height of the slide structure can be controlled at 42.7~42.72mm, which is much lower than the height of the slide structure in existing linear modules of the same type, making the slide structure suitable for application scenarios with limited space.

[0051] See Figure 2 The height of mounting base 1 is 31.2~31.22mm, and the width of mounting base 1 is 48.4±0.015mm. Since the lead screw of the linear module is screwed into the internal thread 12 on the mounting base 1, the height of mounting base 1 can be controlled within 31.2~31.22mm and the width can be controlled within 48.4±0.015mm, which is much lower than the height and width of the mounting base in existing linear modules of the same type, making the slide structure suitable for applications with limited space.

[0052] See Figure 2 and Figure 3 The height of the support seat 2, i.e. the distance from the bottom of the support seat 2 to the top of the boss part 21, is 11.5mm. The width of the support seat 2, i.e. the distance between the outer sides of the two boss parts 21, is 74~74.02mm. The support seat 2 with a height of 11.5mm and a width of 74~74.02mm can ensure that the overall height and maximum width of the slide structure meet the design requirements, making the slide structure suitable for application scenarios with limited space.

[0053] See Figures 1 to 3 In this utility model, the arc-shaped grooves 13 on both sides of the mounting base 1 are used to accommodate steel balls that reduce the friction between the slide structure and the profile. The boss 21 on the bearing base 2 is used to fix the cover of the linear module. Since the mounting base 1 is provided with internal threads 12, the lead screw of the linear module can be screwed into the internal threads 12 on the mounting base 1. Since the lead screw of the linear module is connected to the mounting base 1 by threads, the diameter of the mounting hole 11 on the mounting base 1 can be made to be equivalent to the outer diameter of the lead screw (the diameter of the mounting hole 11 is slightly larger than the outer diameter of the lead screw), effectively reducing the longitudinal dimension of the mounting base 1, thereby reducing the overall longitudinal dimension of the slide structure. The dimensions of the slide structure are optimized to suit applications with limited space. The height of the slide structure can be controlled between 42.7 and 42.72 mm, the height of the mounting base 1 between 31.2 and 31.22 mm, the width of the mounting base 1 between 48.4 ± 0.015 mm, the height of the support base 2 between 11.5 mm, and the width of the support base 2 between 74 and 74.02 mm. These dimensions are significantly lower than those of existing linear modules of the same type, making the slide structure suitable for applications with limited space.

[0054] Example 2:

[0055] See Figures 4 to 10 A slide structure for a linear module includes a mounting base 1, a support base 2, and two return valves 3.

[0056] See Figures 4 to 8The mounting base 1 has mounting holes 11 formed on it, arranged along the length of the mounting base 1. An internal thread 12 is formed on the inner wall of the mounting holes 11. A through hole 14 is formed on the mounting base 1 along its length, located on the side of the internal thread 12. The axis of the through hole 14 can be parallel to the axis of the internal thread 12. A first receiving cavity 112 is formed on the inner wall of one end of the mounting hole 11, located at one end of the internal thread 12 and communicating with one end of the through hole 14. A second receiving cavity 113 is formed on the inner wall of the other end of the mounting hole 11, located at the other end of the internal thread 12 and communicating with the other end of the through hole 14.

[0057] See Figures 6 to 10 The return valve 3 has a groove 31 formed on it, and the groove 31 is arc-shaped. One return valve 3 is housed in the first receiving cavity 112. The first end 35 of the groove 31 of the return valve 3 is connected to the first thread groove 121 at one end of the internal thread 12. Figure 6 As shown), the second end 36 of the groove 31 of the return valve 3 is connected to one end of the through hole 14, and another return valve 3 is housed in the second receiving cavity 113. The first end 35 of the groove 31 of the return valve 3 is connected to the second thread groove 122 at the other end of the internal thread 12. Figure 6 As shown), the second end 36 of the groove 31 of the return valve 3 is connected to the other end of the through hole 14. A spiral groove can be formed on the lead screw of the linear module. The cross-section of the groove is arc-shaped or semi-circular. The arrangement of the grooves is adapted to the internal thread 12. The groove 31 of one return valve 3, the groove of the internal thread 12, the groove of another return valve 3, the through hole 14, and the groove on the lead screw of the linear module can form a closed channel. Multiple steel balls are placed in this channel. In this way, the groove on the lead screw is threadedly connected to the internal thread 12 through the steel balls. The steel balls can ensure that the slide structure slides smoothly along the lead screw and the accuracy of the slide structure's reciprocating movement can be guaranteed. Moreover, during the reciprocating movement of the slide structure... Even if subjected to external impacts, the accuracy of the reciprocating movement of the slide structure will not be easily affected. The groove on the lead screw of the linear module is connected to the internal thread 12 by a steel ball, eliminating the traditional nut structure on the lead screw of the linear module. The traditional lead screw has a nut structure screwed on it and fixed in the mounting hole 11 of the mounting base 1. Since the lead screw of the linear module is connected to the mounting base 1 by a steel ball through a thread, the diameter of the mounting hole 11 on the mounting base 1 can be made to be similar to the outer diameter of the lead screw (the diameter of the mounting hole 11 is slightly larger than the outer diameter of the lead screw), effectively reducing the longitudinal dimension of the mounting base 1, thereby reducing the overall longitudinal dimension of the slide structure. This makes the slide structure suitable for applications with limited space.

[0058] See Figure 6The cross-section of the thread groove of internal thread 12 is arc-shaped, see reference. Figure 10 The cross-section of the groove 31 is arc-shaped. In addition, the lead screw of the linear module is also formed with a spiral groove. The cross-section of the groove is arc-shaped or semi-circular. This ensures that the steel ball rolls smoothly in the channel of the groove 31 of the two return valves 3, the screw groove of the internal thread 12 and the groove wall of the lead screw, so that the slide structure can slide smoothly back and forth along the lead screw.

[0059] See Figures 4 to 7 The return valve 3 has an arc-shaped surface 32 formed on it, and a blocking protrusion 33 is formed on the arc-shaped surface 32. The arc-shaped surface 32 is flush with the thread portion of the internal thread 12. The blocking protrusion 33 is located between two adjacent threads of the internal thread 12. The fact that the arc-shaped surface 32 is flush with the thread portion of the internal thread 12 can prevent the arc-shaped surface 32 from interfering with the lead screw. The blocking protrusion 33 located between two adjacent threads of the internal thread 12 can ensure that the steel ball circulates and rolls in the closed channel formed by the groove 31 of the return valve 3, the thread groove of the internal thread 12, the through hole 14 and the groove wall on the lead screw without falling out.

[0060] See Figures 7 to 10 Both ends of the through hole 14 are formed with stepped portions 141, and the end face of the return device 3 is formed with a plug portion 34. The plug portion 34 is located around the second end 36 of the groove 31. The plug portion 34 is adapted to the stepped portion 141. One return device 3 is plugged into the stepped portion 141 at one end of the through hole 14 through the plug portion 34, and the other return device 3 is plugged into the stepped portion 141 at the other end of the through hole 14 through the plug portion 34. The two return devices 3 can be stably installed in the first accommodating cavity 112 and the second accommodating cavity 113 through the plug-in cooperation of the plug portion 34 with the stepped portions 141 at both ends of the through hole 14.

[0061] See Figure 4 The mounting base 1 has arc-shaped grooves 13 formed on both sides. The arc-shaped grooves 13 are used to accommodate the steel balls of the linear module. In the linear module, the slide structure is installed in a U-shaped profile. Steel balls are installed between the two sides of the slide structure and the inner wall of the profile to reduce the friction between the slide structure and the profile.

[0062] See Figure 4 The support seat 2 is set on the top of the mounting seat 1. The mounting seat 1 and the support seat 2 are integrally formed. The integrally formed mounting seat 1 and the support seat 2 can ensure the overall strength of the slide structure. The support seat 2 has a boss 21 formed on both sides. The boss 21 is arranged along the length of the mounting seat 1. The boss 21 is used to install the cover of the linear module. Each boss 21 has multiple (e.g., three) threaded fixing holes (not shown). The threaded fixing holes are used to fix the cover of the linear module. The cover of the linear module can be firmly installed on the boss 21 on the support seat 2 by multiple screws.

[0063] See Figure 5 and Figure 6 The top of the support seat 2 is formed with an arc-shaped support surface 22, which is located between two protrusions 21. The arc-shaped support surface 22 is arched, and the height of the middle part of the arc-shaped support surface 22 is higher than the height of the two ends of the arc-shaped support surface 22. The arc-shaped support surface 22 is used to overlap the dustproof steel strip on the closed linear module. The arched arc-shaped support surface 22 can prevent the end of the support seat 2 from scratching the dustproof steel strip when the slide structure moves back and forth along the screw.

[0064] The side of the boss portion 21 is formed with an oil injection hole (not shown), which is connected to the mounting hole 11. Lubricating oil can be injected into the lead screw in the mounting hole 11 through the oil injection hole to ensure that the lead screw and the internal thread 12 in the mounting hole 11 are smoothly engaged.

[0065] Both mounting base 1 and bearing base 2 are made of 20CrMo or GCR15. The slide structure made of 20CrMo or GCR15 can ensure the strength and hardness of mounting base 1 and bearing base 2, and guarantee the service life of the slide structure.

[0066] In this embodiment, the dimensions from the bottom of the mounting base 1 to the top of the support base 2 (the top of the boss portion 21), the height of the mounting base 1, the width of the mounting base 1, the height of the support base 2 (i.e., the distance from the bottom of the support base 2 to the top of the boss portion 21), and the width of the support base 2 (i.e., the distance between the outer sides of the two boss portions 21) are the same as in Embodiment 1, and will not be repeated here.

[0067] See Figures 4 to 10In this utility model, the arc-shaped grooves 13 on both sides of the mounting base 1 are used to accommodate steel balls that reduce the friction between the slide structure and the profile. The boss 21 on the bearing base 2 is used to fix the cover of the linear module. The lead screw of the linear module has a spiral groove formed on it. The cross-section of the groove is arc-shaped or semi-circular. The arrangement of the grooves is adapted to the internal thread 12. The groove 31 of one return valve 3, the screw groove of the internal thread 12, the groove of another return valve 3, the through hole 14, and the groove on the lead screw of the linear module can form a closed channel. Multiple steel balls are placed in this channel. In this way, the groove on the lead screw of the linear module is threadedly connected to the internal thread 12 through the steel balls. The steel balls can ensure that the slide structure slides smoothly along the lead screw and the accuracy of the reciprocating movement of the slide structure. This can be guaranteed, and even if the slide structure is subjected to external impacts during reciprocating movement, the accuracy of the reciprocating movement will not be easily affected. The groove on the lead screw of the linear module is connected to the internal thread 12 by a steel ball, eliminating the traditional nut structure on the lead screw of the linear module. The traditional lead screw has a nut structure screwed on it and fixed in the mounting hole 11 of the mounting base 1. Since the lead screw of the linear module is connected to the mounting base 1 by a steel ball through a thread, the diameter of the mounting hole 11 on the mounting base 1 can be made to be similar to the outer diameter of the lead screw (the diameter of the mounting hole 11 is slightly larger than the outer diameter of the lead screw), effectively reducing the longitudinal dimension of the mounting base 1, thereby reducing the overall longitudinal dimension of the slide structure. This makes the slide structure suitable for applications with limited space.

[0068] The above descriptions are merely some embodiments of this utility model, intended to illustrate the technical means of this utility model, and are not intended to limit the technical scope of this utility model. Any obvious improvements made to this utility model by those skilled in the art in conjunction with existing common knowledge fall within the protection scope of this utility model.

Claims

1. A slide structure for a linear module, characterized in that, include: The mounting base has mounting holes arranged along its length, and the inner wall of the mounting holes has internal threads adapted to the lead screw of the linear module. The mounting base also has arc-shaped grooves on both sides for accommodating the steel balls of the linear module. The support base is located on the top of the mounting base. The support base has protrusions on both sides for mounting the cover of the linear module. The protrusions are arranged along the length of the mounting base.

2. The slide structure according to claim 1, characterized in that, It also includes two return valves. The mounting base has through holes arranged along its length. A first receiving cavity is provided on the inner wall of one end of the mounting hole. The first receiving cavity is located at one end of the internal thread and communicates with one end of the through hole. A second receiving cavity is provided on the inner wall of the other end of the mounting hole. The second receiving cavity is located at the other end of the internal thread and communicates with the other end of the through hole. The reflux device is provided with grooves. A return valve is housed in a first receiving cavity. One end of the groove of the return valve communicates with a first threaded groove at one end of the internal thread, and the other end of the groove of the return valve communicates with one end of a through hole. Another return valve is housed in the second accommodating cavity. One end of the groove of the return valve is connected to the second thread groove at the other end of the internal thread, and the other end of the groove of the return valve is connected to the other end of the through hole.

3. The slide structure according to claim 2, characterized in that, The cross-section of the thread groove of the internal thread is arc-shaped, and the cross-section of the groove is arc-shaped.

4. The slide structure according to claim 2, characterized in that, The return valve has an arc-shaped surface with a blocking protrusion. The arc-shaped surface is flush with the thread portion of the internal thread, and the blocking protrusion is located between two adjacent threads of the internal thread.

5. The slide structure according to claim 2, characterized in that, Both ends of the through hole are provided with stepped portions, and the end face of the return device is provided with a plug-in portion. The plug-in portion is located outside the port of the groove and is plugged into the stepped portion.

6. The slide structure according to claim 1, characterized in that, The top of the support seat is provided with an arc-shaped support surface, which is located between two protrusions.

7. The slide structure according to claim 1, characterized in that, The distance from the bottom of the mounting base to the top of the support base is 42.7~42.72mm.

8. The slide structure according to claim 1, characterized in that, The height of the mounting base is 31.2~31.22mm, and the width of the mounting base is 48.4±0.015mm.

9. The slide structure according to claim 1, characterized in that, The height of the support base is 11.5 mm, and the width of the support base is 74~74.02 mm.

10. The slide structure according to claim 1, characterized in that, The mounting base and the bearing base are integrally formed, and both the mounting base and the bearing base are made of 20CrMo or GCR15.

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