Framework structure, stator unit and linear transmission system

Abstract

The utility model relates to a skeleton structure, a stator unit and a linear transmission system. The framework structure comprises an upper framework, a lower framework and a first iron core, the upper framework and the lower framework define an iron core installation cavity, the first iron core is arranged in the iron core installation cavity, the lower framework is provided with a framework base, and the framework base is used for being embedded into a stator base groove to fix the framework structure. Positioning of the framework structure is achieved through the framework and the stator base structure, the fixing mode is simple, the positioning precision is high, meanwhile, the machining precision is simplified, and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of linear transmission technology, and in particular to a skeleton structure, stator unit, and linear transmission system. Background Technology

[0002] As manufacturing technology advances towards higher productivity and precision, traditional linear transmission systems, which use rotary motors as drive components and gears, chains, and belts as transmission components, are gradually being replaced by new linear transmission systems. Compared to traditional linear transmission systems, the new linear transmission systems can directly use the electromagnetic thrust generated by a linear motor (also known as a stator) to drive the moving parts (also known as movers) and move the load along the guide rail, eliminating intermediate transmission links, reducing structural complexity, and improving response speed and motion accuracy.

[0003] In existing linear transmission systems, the stator core is usually clamped and fixed by insulating sheets and PCBs (Printed Circuit Boards). This fixing method requires high precision in the processing of insulating sheets and PCBs, resulting in low dimensional accuracy. Furthermore, the winding process is complex and not easy to automate. Utility Model Content

[0004] Therefore, it is necessary to provide a skeleton structure, stator unit, and linear transmission system to address the technical problems of high stator core machining accuracy requirements, complex winding processes, and difficulty in automated production in existing linear transmission systems.

[0005] This application provides a skeleton structure, including an upper skeleton and a lower skeleton;

[0006] The upper frame and the lower frame enclose a core mounting cavity, which is used to accommodate the first core.

[0007] The lower frame is provided with a frame base, which is embedded in the stator base groove to fix the frame structure.

[0008] In one embodiment, the skeleton base is disposed at the bottom of the lower skeleton, and the skeleton base includes a first boss and a second boss, the first boss and the second boss extending in a direction away from the iron core mounting cavity.

[0009] In one embodiment, the upper frame includes a first winding portion and upper positioning plates disposed at both ends of the first winding portion, and the upper positioning plates are provided with upper engaging portions;

[0010] The lower frame includes a second winding section and lower positioning plates disposed at both ends of the second winding section, and the lower positioning plates are provided with lower engaging sections;

[0011] The upper meshing part and the lower meshing part mesh with each other.

[0012] In one embodiment, the upper frame and / or the lower frame are provided with core positioning grooves, and the surface of the first core is provided with positioning ribs, which are inserted into the core positioning grooves.

[0013] In one embodiment, the first side of the upper positioning plate and the lower positioning plate is provided with a core positioning groove, and / or the second side of the upper positioning plate and the lower positioning plate is provided with a core positioning groove;

[0014] The first side is close to the core mounting cavity, and the second side corresponds to the first side and is far away from the core mounting cavity.

[0015] In one embodiment, a positioning shoulder is provided at the bottom of the second side of the lower positioning plate.

[0016] In one embodiment, the first winding portion and the second winding portion are in the form of a "U" shape, and the first winding portion and the second winding portion surround to form the core mounting cavity. The first core is inserted into the core mounting cavity and both ends of the first core are exposed outside the core mounting cavity.

[0017] In one embodiment, PIN pins are respectively provided on the first boss and the second boss.

[0018] This application embodiment also provides a stator unit, including a stator base, a cover plate and a plurality of the above-mentioned skeleton structures arranged in sequence, wherein a first iron core is provided in the iron core mounting cavity of the skeleton structure and a second iron core is provided between adjacent skeleton structures.

[0019] The surface of the stator base is provided with a plurality of base grooves arranged in sequence, and the skeleton base of the skeleton structure is embedded in the base grooves for positioning;

[0020] The cover plate is provided with multiple cover plate grooves and positioning teeth. The upper skeleton of the skeleton structure is at least partially embedded in the cover plate grooves, and the top of the second iron core abuts against the positioning teeth.

[0021] In one embodiment, the bottom of the lower frame is provided with a positioning shoulder, and the bottom of the second iron core abuts against the positioning shoulder.

[0022] This application embodiment also provides a linear transmission system, including multiple stator units as described above, at least one moving unit, a guide rail, and a guide rail base. The at least one moving unit is mounted on the guide rail, and the guide rail is mounted on the guide rail base. The windings on the stator units generate electromagnetic thrust on the moving unit, driving the moving unit to move along the guide rail.

[0023] The skeleton structure, stator unit, and linear transmission system provided in this application embodiment include an upper skeleton, a lower skeleton, and a first iron core. The upper and lower skeletons enclose an iron core mounting cavity, in which the first iron core is disposed. The lower skeleton is provided with a skeleton base, which is used to embed into a stator base groove to fix the skeleton structure. This application utilizes the skeleton and stator base structure to achieve the positioning of the skeleton structure, resulting in a simple fixing method with high positioning accuracy. It also simplifies machining accuracy and improves production efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a linear transmission system provided in an embodiment of this application.

[0025] Figure 2 This is a schematic diagram of the skeleton structure provided in an embodiment of this application.

[0026] Figure 3 A side view of a skeleton structure provided in an embodiment of this application.

[0027] Figure 4 A schematic diagram of the skeleton structure provided for another embodiment of this application.

[0028] Figure 5 This is a top view of a skeleton structure provided in an embodiment of this application.

[0029] Figure 6 This is a schematic diagram of the core structure provided in one embodiment of this application.

[0030] Figure 7 This is a schematic diagram of a stator unit structure provided in an embodiment of this application.

[0031] Figure 8 This is a schematic diagram of a stator unit structure provided in another embodiment of this application.

[0032] Figure 9 This is a schematic diagram of a stator unit structure provided in another embodiment of this application.

[0033] Figure 10 This is a schematic diagram of a stator base structure provided in an embodiment of this application.

[0034] Figure 11 This is a schematic diagram of a stator base structure provided for another embodiment of this application.

[0035] The labels in the attached diagram are explained as follows:

[0036] 1. Linear transmission system; 10. Stator unit; 20. Moving unit; 30. Guide rail; 40. Guide rail base; 11. Frame structure; 111. Upper frame; 112. Lower frame; 113. First iron core; 14. Second iron core; 114. Iron core mounting cavity; 115. Frame base; 116 (116'), Iron core positioning groove; 117. Winding groove; 118. Winding; 119. Pin; 110. Copper foil; 1 151. First boss; 1152. Second boss; 1153. Wire hole; 1111. First winding part; 1112. First positioning plate; 1113. Upper meshing part; 1121. Second winding part; 1122. Second positioning plate; 1123. Lower meshing part; 1131. Positioning rib; 1124. Positioning shoulder; 12. Stator base; 13. Cover plate; 121. Base groove; 131. Cover plate groove; 132. Positioning tooth. Detailed Implementation

[0037] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0038] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0039] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0043] like Figure 1 As shown, the linear transmission system 1 provided in this application embodiment includes multiple stator units 10 and at least one moving subunit 20, a guide rail 30 and a guide rail base 40. The moving subunit 20 is mounted on the guide rail 30, and the guide rail 30 is mounted on the guide rail base 40. The windings on the stator unit 10 can generate electromagnetic thrust on the moving subunit 20, thereby driving the moving subunit 20 to move along the guide rail 30 of the linear transmission system 1.

[0044] Linear transmission system 1 can be applied to industries such as automated production lines, packaging and transportation, assembly automation, and screen printing. The term "length direction" throughout this text refers to... Figure 1 The direction indicated by the "X-axis" is used as the reference, and the "width direction" is based on... Figure 1 The direction indicated by the "Y-axis" is used as the reference, and the "height direction" is based on... Figure 1 The direction indicated by the "Z-axis" in the diagram shall be taken as the reference.

[0045] Specifically, multiple stator units 10 can be sequentially spliced ​​along the guide rail 30 to form straight or curved segments of a linear transmission system. Of course, multiple stator units 10 can also be freely spliced ​​and expanded to form other irregular splicing shapes to meet various application requirements.

[0046] It should be noted that the skeleton structure and stator unit of the embodiments of this application can be applied not only to linear transmission systems, but also to conventional linear motors, and there is no limitation on this.

[0047] like Figure 2-4 As shown, this application embodiment provides a skeleton structure 11, including an upper skeleton 111 and a lower skeleton 112; the upper skeleton 111 and the lower skeleton 112 enclose a core mounting cavity 114, which is used to accommodate a first core 113; the lower skeleton 112 is provided with a skeleton base 115, which is used to embed into the base groove 121 of the stator base 12 to fix the skeleton structure 11. This application embodiment utilizes the upper skeleton 111, the lower skeleton 112, and the groove of the stator base 12 to achieve the positioning of the skeleton structure. The fixing method is simple and the positioning accuracy is high, while simplifying the processing accuracy and improving the production efficiency.

[0048] In one embodiment, the frame base 115 is disposed at the bottom of the lower frame 112. The frame base 115 includes a first boss 1151 and a second boss 1152, which extend outward along a direction away from the core mounting cavity 114, i.e., along the Y direction. The first boss 1151 and the second boss 1152 are embedded in the base groove 121 of the stator base 12 and a transition fit is adopted to ensure the accuracy of the frame structure 11.

[0049] In one embodiment, such as Figure 4 As shown, the upper frame 111 includes a first winding portion 1111 and an upper positioning plate 1112 disposed at both ends of the first winding portion 1111. The positioning plate 1112 is provided with an upper engaging portion 1113. The lower frame 112 includes a second winding portion 1121 and a lower positioning plate 1122 disposed at both ends of the second winding portion 1121. The lower positioning plate 1122 is provided with a lower engaging portion 1123. The upper engaging portion 1113 and the lower engaging portion 1123 engage with each other, thereby fixing the upper and lower frames. After engagement, the upper and lower frames enclose the core mounting cavity 114.

[0050] In one embodiment, the upper frame 111 and / or the lower frame 112 are provided with core positioning grooves 116 to achieve lateral positioning of the core. Figure 6As shown, this is a schematic diagram of the iron core structure provided in the embodiment of this application. The iron core 113 (14) is generally long and narrow. Positioning ribs 1131 are provided on the surface of the iron core and distributed on both sides of the iron core. The positioning ribs 1131 are inserted into the positioning groove of the iron core to perform lateral positioning of the iron core.

[0051] Specifically, both the upper positioning plate 1112 and the lower positioning plate 1122 have a core positioning groove 116 on their first side, and / or both the upper positioning plate 1112 and the lower positioning plate 1122 have a core positioning groove 116' on their second side. The first side is close to the core mounting cavity 114, and the second side corresponds to the first side but is away from the core mounting cavity 114.

[0052] like Figure 5 As shown, this is a top view of the lower frame provided in an embodiment of this application. A core positioning groove 116 is provided on the first side of the lower positioning plate 1122 to limit the lateral sliding of the first core 113, and a core positioning groove 116' is provided on the second side of the lower positioning plate 1122 to limit the lateral sliding of the second core 14. The structure of the upper positioning plate 1112 is similar and will not be described in detail here. The installation accuracy of the core is ensured by the provision of the core positioning grooves 116 (116').

[0053] It should be noted that the iron core positioning groove can also be set in other positions of the upper and lower frames to limit the first iron core 113 and the second iron core 14, and no restrictions are made here.

[0054] When installing the first iron core 113, the first iron core 113 is first inserted into the lower frame 112. Then, the upper frame engages with the lower frame to fix the first iron core 113 in the iron core mounting cavity 114. The bottom of the first iron core 113 contacts the bottom of the groove in the lower frame 112. At the same time, the positioning ribs of the first iron core 113 cooperate with the iron core positioning groove 116 to laterally position the first iron core 113. After the frame structure 11 and the first iron core 113 are installed, a winding structure is formed.

[0055] In one embodiment, such as Figure 7 As shown, a positioning shoulder 1124 is provided at the bottom of the second side of the lower positioning plate 1122 of the lower frame 112 to position the bottom of the second iron core 14. The specific installation method of the second iron core 14 will be described below.

[0056] It should be noted that the positioning shoulder can also be set in other positions of the lower skeleton, and there are no restrictions here.

[0057] In one embodiment, the first winding portion 1111 and the second winding portion 1121 are in a U-shape, and the first winding portion 1111 and the second winding portion 1121 enclose to form a core mounting cavity 114. The first core 113 is inserted into the core mounting cavity 114 and both ends of the first core 113 are exposed outside the core mounting cavity 114.

[0058] In one embodiment, the skeleton structure 11 further includes a winding 118, and the outer surface of the first winding portion 1111 and / or the second winding portion 1121 is provided with a winding groove 117, and the winding 118 is wound around the winding groove 117.

[0059] In one embodiment, PIN pins 119 are respectively provided on the first boss 1151 and the second boss 1152. The PIN pins 119 are located on the side of the boss and extend along the Y direction. Wire holes 1153 are respectively provided at the bottom of the first boss 1151 and the second boss 1152, and the wire holes 1153 are located at the bottom of the PIN pins 119. The winding 118 enters through one wire hole of the winding structure 11, winds along the wire grooves 117 of the first winding portion 1111 and the second winding portion 1121, and exits through another wire hole. The skeleton structure composed of the upper skeleton 111, the lower skeleton 112, the PIN pins 119, and the wire holes 1153 can be automatically wound using an automated winding machine, greatly reducing winding time and improving production efficiency.

[0060] Furthermore, the first iron core 113 can be pressed against the bottom of the groove of the pre-lower frame by copper foil 110, thereby connecting the PIN pin 119 through copper foil 110 to achieve grounding of the stator unit.

[0061] like Figure 7-9 As shown, this application embodiment also provides a stator unit 10, including a stator base 12, a cover plate 13, and a plurality of skeleton structures 11 arranged in sequence as described above. The skeleton structures 11 are evenly distributed, and a second iron core 14 is provided between two adjacent skeleton structures 11. A first iron core 113 is provided in the iron core mounting cavity 114 of the skeleton structure 11, and the second iron core 14 is provided between two adjacent windings 11.

[0062] like Figure 10 and 11 The diagrams shown are schematic representations of a linear stator base and an arc-shaped stator base. The stator base 12 has multiple evenly distributed base grooves 121 on its surface. The frame base 115 of the frame structure 11 is positioned by embedding itself into these base grooves 121. Since the accuracy of the base grooves 121 is guaranteed by the machine tool, and the frame base 115 and the base grooves 121 use a transition fit, the positioning accuracy of the frame structure 11 is ensured, and the cogging force is reduced.

[0063] In addition, the cover plate 13 is provided with a plurality of evenly distributed cover plate grooves 131. The upper skeleton 111 of the skeleton structure 11 is at least partially installed in the cover plate grooves 131. The cover plate grooves 131 are used to correct the sway of the skeleton structure 11 and to shape the skeleton structure 11, thereby further ensuring the positioning accuracy.

[0064] Furthermore, the cover plate 13 is provided with a plurality of evenly distributed positioning teeth 132, and the second iron core 14 abuts against the positioning teeth 132 to achieve the limiting of the second iron core 14.

[0065] Furthermore, a positioning shoulder 1124 is provided at the bottom of the lower frame 112, and the bottom of the second iron core 14 abuts against the positioning shoulder 1124 to achieve bottom positioning of the second iron core 14. Specifically, the positioning shoulder 1124 can be provided at the bottom of the second side of the lower positioning plate 1122 of the lower frame 112.

[0066] When installing the second iron core 14, first insert the second iron core 14 between the two frame structures and abut its bottom against the positioning shoulder 1124. Since the second side of the upper and lower positioning plates is provided with iron core positioning groove 116', the second iron core 14 can be laterally positioned. Finally, cover the cover plate 13, and the positioning teeth 132 on the cover plate 13 abut against the top of the second iron core 14 and fix it.

[0067] It should be noted that in this embodiment, the second iron core 14 and the first iron core 113 have the same structure to facilitate uniform processing. The iron core is generally elongated, with positioning ribs 1131 on its surface, distributed on both sides of the iron core.

[0068] Furthermore, after the winding is completed and the skeleton structure 11, the first iron core 113, the second iron core 14, the stator base 12, and the cover plate 13 are installed, they are sealed by applying adhesive.

[0069] It should be noted that stator unit 10 can be a linear structure (e.g., Figure 8 As shown), it can also be an arc-shaped structure (such as...). Figure 9 As shown in the figure, other irregular curves are also possible, and no restrictions are placed here. Specifically, for a straight structure, the stator unit 10 can be provided with a base 12 and a cover plate 13; for a curved structure, in order to simplify the processing, the stator unit 10 can be provided with a base 12 and a cover plate 13 composed of multiple segments.

[0070] The stator unit and linear transmission system provided in this application embodiment include a stator base, a cover plate, and sequentially arranged skeleton structures. A first iron core is disposed in the iron core mounting cavity, and a second iron core is disposed between adjacent skeleton structures. The surface of the stator base is provided with a plurality of sequentially arranged base grooves, and the skeleton base of the skeleton structure is embedded in the base grooves for positioning. The cover plate is provided with a plurality of cover plate grooves and positioning teeth, and the upper skeleton of the skeleton structure is at least partially embedded in the cover plate grooves. The top of the second iron core abuts against the positioning teeth. This application utilizes the stator base and cover plate structure to achieve the positioning of the stator unit, resulting in a simple fixing method and high positioning accuracy. It also reduces cogging force, simplifies machining accuracy, and improves production efficiency.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A skeleton structure, characterized in that, The skeleton structure includes an upper skeleton and a lower skeleton; The upper frame and the lower frame enclose a core mounting cavity, which is used to accommodate the first core. The lower frame is provided with a frame base, which is embedded in the stator base groove to fix the frame structure.

2. The skeleton structure as described in claim 1, characterized in that, The frame base is disposed at the bottom of the lower frame, and the frame base includes a first boss and a second boss, which extend in a direction away from the iron core mounting cavity.

3. The skeleton structure as described in claim 1, characterized in that, The upper frame includes a first winding part and upper positioning plates disposed at both ends of the first winding part, and the upper positioning plates are provided with upper meshing parts; The lower frame includes a second winding section and lower positioning plates disposed at both ends of the second winding section, and the lower positioning plates are provided with lower engaging sections; The upper meshing part and the lower meshing part mesh with each other.

4. The skeleton structure as described in claim 3, characterized in that, The upper frame and / or the lower frame are provided with iron core positioning grooves, and the surface of the first iron core is provided with positioning ribs, which are inserted into the iron core positioning grooves.

5. The skeleton structure as described in claim 4, characterized in that, The upper positioning plate and the lower positioning plate are provided with iron core positioning grooves on their first side edges, and / or the upper positioning plate and the lower positioning plate are provided with iron core positioning grooves on their second side edges; The first side is close to the core mounting cavity, and the second side corresponds to the first side and is far away from the core mounting cavity.

6. The skeleton structure as described in claim 5, characterized in that, A positioning shoulder is provided at the bottom of the second side of the lower positioning plate.

7. The skeleton structure as described in any one of claims 3 to 6, characterized in that, The first winding portion and the second winding portion are in a U-shape. The first winding portion and the second winding portion together form the core mounting cavity. The first core is inserted into the core mounting cavity and both ends of the first core are exposed outside the core mounting cavity.

8. The skeleton structure as described in claim 2, characterized in that, The first boss and the second boss are respectively provided with PIN pins.

9. A stator unit, characterized in that, The system includes a stator base, a cover plate, and a plurality of skeleton structures as described in any one of claims 1 to 8 arranged in sequence. A first iron core is provided in the iron core mounting cavity of the skeleton structure, and a second iron core is provided between adjacent skeleton structures. The surface of the stator base is provided with a plurality of base grooves arranged in sequence, and the skeleton base of the skeleton structure is embedded in the base grooves for positioning; The cover plate is provided with multiple cover plate grooves and positioning teeth. The upper skeleton of the skeleton structure is at least partially embedded in the cover plate grooves, and the top of the second iron core abuts against the positioning teeth.

10. The stator unit as described in claim 9, characterized in that, The bottom of the lower frame is provided with a positioning shoulder, and the bottom of the second iron core abuts against the positioning shoulder.

11. A linear transmission system, characterized in that, It includes multiple stator units as described in claim 9 or 10, at least one moving unit, a guide rail, and a guide rail base. The at least one moving unit is mounted on the guide rail, the guide rail is mounted on the guide rail base, and the windings on the stator units generate electromagnetic thrust on the moving unit, driving the moving unit to move along the guide rail.

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