Rotor structure of linear conveying device and linear conveying device

Abstract

The utility model relates to a rotor structure of a linear conveying device. The mover structure comprises a base, the base comprises a first mounting part, a second mounting part and a connecting part, the first mounting part and the second mounting part are both provided with a first end and a second end which are opposite, the first end of the first mounting part is used for mounting a first magnetic assembly, and the first end of the second mounting part is used for mounting a second magnetic assembly opposite to the first magnetic assembly; the connecting part is provided with a connecting body, the connecting body is connected with the first mounting part and the second mounting part, the second end of the first mounting part protrudes out of the connecting body in the first direction, and / or the second end of the second mounting part protrudes out of the connecting body in the second direction; the first direction refers to the direction from the first end to the second end of the first mounting part, and the second direction refers to the direction from the first end to the second end of the second mounting part. According to the rotor structure, the magnetic attraction moment of the stator structure to the base can be reduced, and the rigidity and stability of the linear conveying device can be guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of conveying devices, and in particular to a mover structure of a linear conveying device and a linear conveying device. Background Art

[0002] As manufacturing technology evolves toward higher productivity and higher precision, traditional linear conveyors, which use rotary motors as drive components and gears, chains, and belts as transmission elements, are gradually being replaced by new linear conveyors. Compared to traditional linear conveyors, these new linear conveyors directly utilize the electromagnetic thrust generated by the linear motor (also known as the stator) to drive the moving element (also known as the mover) to move the load along the guide rail. This eliminates the need for intermediate transmission links, reduces structural complexity, and improves response speed and motion precision.

[0003] The mover of a new linear conveyor typically consists of a base, upper and lower magnet arrays, which are positioned relative to each other on the base. The stator generates electromagnetic thrust on the upper and lower magnet arrays, driving the mover along the guide rail. However, existing bases are typically U-shaped, which can generate significant magnetic attraction torque if assembly errors occur, affecting the rigidity and stability of the device. Utility Model Content

[0004] Based on this, it is necessary to provide a linear conveyor device mover structure and a linear conveyor device to address the technical problem that the mover base of the existing new linear conveyor device will generate a large magnetic attraction torque when there is an assembly error.

[0005] A mover structure of a linear conveying device includes a base, wherein the base includes a first mounting portion, a second mounting portion, and a connecting portion;

[0006] The first mounting portion and the second mounting portion both have a first end and a second end opposite to each other, the first end of the first mounting portion being used to mount a first magnetic component, and the second end of the second mounting portion being used to mount a second magnetic component opposite to the first magnetic component;

[0007] The connecting portion has a connecting body, which connects the first mounting portion and the second mounting portion, and the second end of the first mounting portion protrudes from the connecting body along a first direction, and / or the second end of the second mounting portion protrudes from the connecting body along a second direction; wherein, the first direction refers to the direction from the first end to the second end of the first mounting portion, and the second direction refers to the direction from the first end to the second end of the second mounting portion.

[0008] In one embodiment, the first mounting portion further has a middle portion located between its first end and second end, the second mounting portion further has a middle portion located between its first end and second end, and the connecting body connects the middle portion of the first mounting portion and the middle portion of the second mounting portion.

[0009] In one embodiment, the connecting portion further comprises a first reinforcing body, the first reinforcing body being connected to the second end of the first mounting portion and the connecting body; and / or,

[0010] The connecting portion further includes a second reinforcing body, and the second reinforcing body is connected to the second end of the second mounting portion and the connecting body.

[0011] In one embodiment, the first reinforcing body comprises a first side, a first oblique side, and a second side connected end to end, the first side is connected to the second end of the first mounting portion, and the second side is connected to the connecting body; and / or,

[0012] The second reinforcing body has a third side, a second oblique side and a fourth side connected end to end in sequence, the three sides are connected to the second end of the second mounting portion, and the fourth side is connected to the connecting body.

[0013] In one embodiment, the connecting portion further has a third reinforcing body, which connects the second end of the first mounting portion and the second end of the second mounting portion; wherein the third reinforcing body is vertically or obliquely arranged.

[0014] In one embodiment, the first mounting portion is integrally formed with the connection body or is screwed together, and the second mounting portion is integrally formed with the connection body or is screwed together.

[0015] In one embodiment, the movable structure further includes an outer roller assembly and an inner roller assembly, wherein the outer roller assembly and the inner roller assembly are both rotatably disposed on a side of the second mounting portion facing away from the first magnetic assembly, and a gap is formed between the outer roller assembly and the inner roller assembly in a width direction of the second mounting portion;

[0016] There is a first distance between two adjacent outer rollers in the outer roller assembly in the length direction of the second mounting portion, and there is a second distance between two adjacent inner rollers in the inner roller assembly in the length direction of the second mounting portion, the first distance is greater than the second distance, and the outer rollers are arranged on the second mounting portion through eccentric screw connections, and the inner rollers are arranged on the second mounting portion through concentric screw connections, and / or,

[0017] The mover structure further includes a first lubrication assembly, which is arranged between two adjacent outer rollers in the outer roller assembly and has a first elastic member and a first lubrication head, wherein the first elastic member is used to provide a force for the first lubrication head to move toward the inner roller assembly, and / or,

[0018] The mover structure also includes a second lubrication assembly, which is arranged between two adjacent inner rollers in the inner roller assembly and has a second elastic member and a second lubrication head. The second elastic member is used to provide a force to the second lubrication head to move toward the outer roller assembly.

[0019] In one embodiment, the movable structure further includes at least one of the following two features:

[0020] A position sensor is provided at the first end of the first mounting portion;

[0021] An anti-collision portion is provided on one side of the second mounting portion along the length direction.

[0022] A linear conveying device comprises a stator structure, a guide rail and a plurality of mover structures as described in any one of the above items;

[0023] The stator structure can cooperate with the first and second magnetic components of the mover structure to generate electromagnetic thrust to the mover structure, thereby driving the mover structure to move along the guide rail.

[0024] In one embodiment, the stator structure includes a plurality of stator modules, and the plurality of stator modules can be spliced ​​in sequence along the direction of the guide rail.

[0025] The power module and linear conveying device of the above-mentioned linear conveying device are configured by arranging a connecting portion between the first mounting portion and the second mounting portion of the base, wherein at least one of the second end of the first mounting portion and the second end of the second mounting portion protrudes the connecting body of the connecting portion in a direction away from the stator structure, so that the base can be roughly in the shape of an "I". Compared with the existing "U"-shaped base, the present application can not only improve the rigidity of the base, but also make the connecting portion of the base closer to the stator structure, shorten the distance between the connecting portion and the stator structure, greatly reduce the magnetic attraction torque of the stator structure on the base, improve the stability of the linear conveying device, and ensure the rigidity and stability of the linear conveying device even if there are errors in the assembly of the movable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a linear conveying device provided in one embodiment of the present application.

[0027] Figure 2A schematic structural diagram of the movable structure of the linear conveying device provided in one embodiment of the present application.

[0028] Figure 3 for Figure 2 A side view of the movable structure of the linear conveyor is provided.

[0029] Figure 4 A side view of the movable structure of a linear conveying device provided in another embodiment of the present application.

[0030] Figure 5 for Figure 3 A schematic structural diagram of the outer roller and eccentric threaded connection of the movable structure is provided as viewed from a first angle.

[0031] Figure 6 for Figure 3 A schematic structural diagram of the outer roller and eccentric threaded connection of the movable structure is provided as viewed from a second angle.

[0032] Figure 7 for Figure 3 A schematic structural diagram of the inner roller and the concentric threaded connection of the movable structure is provided as viewed from a first angle.

[0033] Figure 8 for Figure 3 A schematic structural diagram of the inner roller and the concentric threaded connection of the movable structure is provided as viewed from a second angle.

[0034] Figure 9 for Figure 1 A schematic structural diagram of a linear stator module of a stator structure of a linear conveying device is provided.

[0035] Figure 10 for Figure 1 A side view of a curved stator module of a stator structure of a linear conveyor is provided.

[0036] Figure 11 for Figure 1 A schematic structural diagram of the guide rail of the linear conveyor device is provided.

[0037] Figure 12 A side view of a base of a mover structure provided in another embodiment of the present application.

[0038] The reference numerals in the accompanying drawings are described as follows:

[0039] 10. Linear conveying device; 100. Mover structure; 110. Base; 111. First mounting portion; 111a. First end of the first mounting portion; 111b. Second end of the first mounting portion; 112. Second mounting portion; 112a. First end of the second mounting portion; 112b. Second end of the second mounting portion; 113. Connecting body; 114. First reinforcing body; 1141. First side; 1142. First oblique side; 1143. Second side; 115. Second reinforcing body; 1151. Third side; 1152. Second oblique side; 1153. Fourth side; 116. Third reinforcing body; 120. First magnetic assembly; 121. First back iron; 122. First permanent magnet array; 130. Second magnetic assembly; 131. Second back iron; 132. Second permanent magnet array; 14 0. Outer roller assembly; 141. Outer roller; 1411. V-shaped mating surface; 142. Eccentric screw connection; 150. Inner roller assembly; 151. Inner roller; 152. Concentric screw connection; 1511. V-shaped mating surface; 160. First lubrication assembly; 170. Second lubrication assembly; 180. Position sensor; 190. Anti-collision part; 200. Stator structure; 210. Stator module; 210a. Straight stator module; 210b. Curved stator module; 211. Coil assembly; 2111. Stator core; 2112. Coil winding; 212. Coil base; 213. Cover plate; 214. Drive control circuit; 215. Sensor circuit; 300. Guide rail; 310. Straight segment; 320. Curved segment; 400. Stator base; 500. Guide rail base. DETAILED DESCRIPTION

[0040] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0041] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0042] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0043] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0044] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0045] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, 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 embodiment.

[0046] On the one hand, an embodiment of the present application provides a mover structure that can be used in a linear conveying device and can cooperate with the stator structure of a linear conveying module to drive the load movement. Specifically, Figure 1 As shown, the stator structure 200 can generate electromagnetic thrust to the movable structure 100, thereby driving the movable structure 100 to move along the guide rail 300 of the linear conveyor 10. The linear conveyor 10 can be applied to industries such as automated production lines, packaging and transportation, assembly automation, and screen printing. Figure 1 The direction indicated by the "X axis" in the "length direction" is based on Figure 1 The direction indicated by the "Y axis" in the figure shall prevail.

[0047] like Figure 2 As shown, the movable structure 100 includes a base 110, a first magnetic component 120 and a second magnetic component 130. The base 110 serves as a supporting component of the movable structure 100. Figure 3 As shown, it may include a first mounting portion 111, a second mounting portion 112 and a connecting portion; the first mounting portion 111 and the second mounting portion 112 both have a first end and a second end relative to each other, the first end 111a of the first mounting portion 111 is used to install the first magnetic component 120, and the first end 112a of the second mounting portion 112 is used to install the second magnetic component 130 opposite to the first magnetic component 120; the connecting portion has a connecting body 113, the connecting body 113 connects the first mounting portion 111 and the second mounting portion 112, the second end 111b of the first mounting portion 111 protrudes from the connecting body 113 along the first direction, and / or the second end of the second mounting portion 112 protrudes from the connecting body 113 along the second direction; wherein the first direction refers to the direction from the first end 111a of the first mounting portion 111 to the second end 111b, and the second direction refers to the direction from the first end 112a of the second mounting portion 112 to the second end 112b.

[0048] The base 110 may be made of a metal material with a certain strength and hardness, such as aluminum alloy.

[0049] like Figure 3As shown, the first magnetic assembly 120 is disposed on the first end 111a of the first mounting portion 111, and the second magnetic assembly 130 is disposed on the first end 112a of the second mounting portion 112 and faces the first magnetic assembly 120. An end of the first mounting portion 111 close to the stator structure 200 is defined as the first end 111a of the first mounting portion 111, and an end of the second mounting portion 112 close to the stator structure 200 is defined as the first end 112a of the second mounting portion 112.

[0050] As an example, Figure 2 As shown, the first magnetic component 120 may include a first back iron 121 provided on the surface of the first mounting portion 111 facing the second mounting portion 112 and a first permanent magnet array 122 provided on the surface of the first back iron 121 facing the second mounting portion 112, and the second magnetic component 130 may include a second back iron 131 provided on the surface of the second mounting portion 112 facing the first mounting portion 111 and a second permanent magnet array 132 provided on the surface of the second back iron 131 facing the first mounting portion 111.

[0051] The edge portion of the stator structure 200 (i.e., the coil assembly 211 of the stator structure 200 mentioned below) is located between the first magnetic assembly 120 and the second magnetic assembly 130, and is capable of generating a magnetic excitation magnetic field when an excitation current is applied. The magnetic excitation magnetic field interacts with the permanent magnetic field generated by the permanent magnet array to form an electromagnetic thrust, thereby driving the mover structure 100 to move.

[0052] Among them, the edge part of the stator structure 200 will also generate a magnetic attraction force on the first and second magnetic components 130, and the magnetic attraction force will be transmitted to the connecting body 113 to form a larger magnetic attraction torque. The magnetic attraction torque causes the base 110 of the movable structure 100 to tilt toward the edge part of the movable structure 100 with the connecting body 113 as the fulcrum, affecting the rigidity and stability of the linear conveying device 10. To this end, the present application provides a connecting portion between the first mounting portion 111 and the second mounting portion 112 of the base 110, wherein at least one of the second end 111b of the first mounting portion 111 and the second end 112b of the second mounting portion 112 protrudes a connecting body 113 of the connecting portion in a direction away from the stator structure 200, so that the base 110 can be roughly in the shape of an "I". Compared with the existing "U"-shaped base 110, the present application can not only improve the rigidity of the base 110, but also make the connecting body 113 of the base 110 closer to the stator structure 200, shorten the distance between the connecting body 113 and the stator structure 200, greatly reduce the magnetic attraction torque of the stator structure 200 on the base 110, and improve the stability of the linear conveying device 10. Even if there is an assembly error in the movable structure 100, the rigidity and stability of the linear conveying device 10 can be guaranteed.

[0053] In one embodiment of the present application, the connecting body 113 can be integrally formed with the first mounting portion 111 and the second mounting portion 112. This improves the connection strength between the connecting body 113 and the first mounting portion 111 and the second mounting portion 112, helps the base 110 withstand a greater magnetic attraction torque, and improves the rigidity and stability of the linear conveyor 10. Alternatively, the connecting body 113 can be integrally formed with the first mounting portion 111 and the second mounting portion 112 by casting.

[0054] In another embodiment of the present application, the connecting body 113 can also be screwed to the first mounting portion 111 and the second mounting portion 112. This can not only ensure the connection strength between the connecting body 113 and the first mounting portion 111 and the second mounting portion 112, but also reduce manufacturing costs and promote the use of the product. Compared to welding, screwing is more suitable for the manufacture of high-speed precision parts. Optionally, the connecting body 113 can be connected to the first mounting portion 111 and the second mounting portion 112 using screws.

[0055] Of course, the connection method of the connecting body 113 with the first mounting part 111 is different from the connection method with the second mounting part 112. For example, the connecting body 113 and the first mounting part 111 are integrally formed, and the connecting body 113 and the second mounting part 112 are screwed together; for another example, the connecting body 113 and the first mounting part 111 are screwed together, and the connecting body 113 and the second mounting part 112 are integrally formed.

[0056] In one embodiment of the present application, the second end 111b of the first mounting portion 111 and the second end 112b of the second mounting portion 112 both protrude from the connection body 113 in a direction away from the stator structure 200, that is, Figure 3 As shown, the first mounting portion 111 further has a middle portion located between its first end 111a and second end 111b, and the second mounting portion 112 further has a middle portion located between its first end 112a and second end 112b. The connecting body 113 connects the middle portion of the first mounting portion 111 and the middle portion of the second mounting portion 112. It should be noted that the middle portion of the first mounting portion 111 is not necessarily the most central portion of the first mounting portion 111, but may also refer to a portion relatively close to the first end 111a of the first mounting portion 111, or a portion relatively close to the second end 111b of the first mounting portion 111; similarly, the middle portion of the second mounting portion 112 is not necessarily the most central portion of the second mounting portion 112, but may also refer to a portion relatively close to the first end 112a of the second mounting portion 112, or a portion relatively close to the second end 112b of the second mounting portion 112. The positional relationship between the connecting body 113 and the first mounting portion 111 and the second mounting portion 112 is set in this way, which can further reduce the magnetic attraction torque of the stator structure 200 on the base 110 .

[0057] Furthermore, in some embodiments, the connecting portion further includes a first reinforcing body 114, which connects the second end 111b of the first mounting portion 111 and the connecting body 113. Specifically, the first reinforcing body 114 and the first magnetic assembly 120 are respectively disposed on opposite sides of the connecting body 113 in the width direction. The first reinforcing body 114 helps the base 110 withstand a greater magnetic attraction torque, thereby improving the rigidity and stability of the linear conveyor device 10.

[0058] Optionally, the first reinforcing body 114 is integrally formed with the first mounting portion 111 and the connecting body 113 or is screwed together.

[0059] Alternatively, as Figure 3 As shown, the first reinforcing body 114 has a first side 1141, a first oblique side 1142, and a second side 1143 connected end to end. The first side 1141 is connected to the second end 111b of the first mounting portion 111, and the second side 1143 is connected to the connecting body 113. The first reinforcing body 114 generally has a right-angled triangle structure. The first reinforcing body 114 of this structure can also be connected to the connection between the first mounting portion 111 and the connecting body 113, thereby further enabling the base 110 to withstand a greater magnetic attraction torque.

[0060] Of course, the first reinforcement body 114 may also be substantially in an I-shaped structure, with opposite ends of the first reinforcement body 114 connected to the first mounting portion 111 and the connection body 113 respectively.

[0061] Likewise, if Figure 3 As shown, the connecting portion may further include a second reinforcing body 115, which connects the second end 112b of the second mounting portion 112 and the connecting body 113. That is, the second reinforcing body 115 and the first magnetic assembly 120 are respectively disposed on opposite sides of the connecting body 113 in the width direction. The second reinforcing body 115 helps the base 110 withstand a greater magnetic attraction torque, thereby improving the rigidity and stability of the linear conveyor device 10.

[0062] Optionally, the second reinforcing body 115 is integrally formed with the second mounting portion 112 and the connecting body 113 or is screwed together.

[0063] Alternatively, as Figure 3 As shown, the second reinforcing body 115 has a third side 1151, a second oblique side 1152, and a fourth side 1153 connected end to end. The third side 1151 is connected to the second end 112b of the second mounting portion 112, and the fourth side 1153 is connected to the connecting body 113. The second reinforcing body 115 generally has a right-angled triangle structure. The second reinforcing body 115 of this structure can also be connected to the connection between the second mounting portion 112 and the connecting body 113, thereby further enabling the base 110 to withstand a greater magnetic attraction torque.

[0064] Of course, the second reinforcement body 115 may also be substantially in an I-shaped structure, with opposite ends of the second reinforcement body 115 connected to the second mounting portion 112 and the connection body 113 .

[0065] The first reinforcement body 114 and the second reinforcement body 115 may both be provided, or only one of them may be provided.

[0066] like Figure 4 As shown, in some other embodiments, the connecting portion further includes a third reinforcing body 116, which connects the second end 111b of the first mounting portion 111 and the second end 112b of the second mounting portion 112. Specifically, the third reinforcing body 116 and the first and second magnetic assemblies 130 are respectively disposed on opposite sides of the connecting body 113 in the width direction. The third reinforcing body 116 also helps the base 110 withstand a greater magnetic attraction torque, thereby improving the rigidity and stability of the linear conveyor device 10.

[0067] Optionally, the third reinforcement body 116 is integrally formed with the first mounting portion 111 and the second mounting portion 112 or is screwed together.

[0068] Optionally, the third reinforcement body 116 is generally in the shape of a letter "I". Figure 4 As shown, when the connecting body 113 connects the middle of the first mounting portion 111 and the middle of the second mounting portion 112, the third reinforcing body 116 is vertically arranged; and as shown Figure 12 As shown, when the connecting body 113 connects the second end 111b of the first mounting portion 111 and the middle of the second mounting portion 112, the third reinforcing body 116 is tilted; when the connecting body 113 connects the middle of the first mounting portion 111 and the second end 112b of the second mounting portion 112, the third reinforcing body 116 is tilted.

[0069] Of course, according to needs, when the connecting body 113 connects the middle of the first mounting portion 111 and the middle of the second mounting portion 112 , the first reinforcing body 114 , the second reinforcing body 115 and the third reinforcing body 116 can be provided on the base 110 .

[0070] like Figures 2 to 4As shown, in some embodiments of the present application, the movable structure 100 further includes an outer roller assembly 140 and an inner roller assembly 150. Both the outer roller assembly 140 and the inner roller assembly 150 are rotatably disposed on the side of the second mounting portion 112 that faces away from the first magnetic assembly 120. The outer roller assembly 140 and the inner roller assembly 150 are separated by a gap in the width direction of the second mounting portion 112. When the stator structure 200 applies electromagnetic thrust to the movable structure 100, the inner roller assembly 150 rolls along the outer wall of the guide rail 300, and the outer roller assembly 140 rolls along the inner wall of the guide rail 300, so that the movable structure 100 can move along the guide rail 300 more effortlessly and smoothly. It can be understood that the gap between the outer roller assembly 140 and the inner roller assembly 150 is used to accommodate the guide rail 300.

[0071] It should be noted that see Figure 1 The stator structure 200 is installed on the stator base 400 of the linear conveying device 10, the outer wall of the guide rail 300 is away from the stator base 400, and the inner wall of the guide rail 300 is close to the stator base 400. Correspondingly, the outer roller assembly 140 is away from the stator base 400, and the inner roller assembly 150 is close to the stator base 400.

[0072] In one embodiment, see Figure 3 The outer roller assembly 140 includes a plurality of outer rollers 141 arranged along the width direction of the second mounting portion 112, and the inner roller assembly 150 includes a plurality of outer rollers 141 arranged along the width direction of the second mounting portion 112; a first distance is defined between two adjacent outer rollers 141 along the length direction of the second mounting portion 112, and a second distance is defined between two adjacent inner rollers 151 in the inner roller assembly 150 along the length direction of the second mounting portion 112, with the first distance being greater than the second distance. This arrangement enables the movable structure 100 to operate stably along the curved section 320 of the guide rail 300 (see FIG. 1 ). Figure 11 ).

[0073] The number of the outer rollers 141 and the inner rollers 151 can be set according to needs, as long as the movable structure 100 can stably run along the guide rail 300. For example, the number of the outer rollers 141 and the inner rollers 151 is set to 2, 3 or more.

[0074] Alternatively, as Figures 5 to 8 As shown, the outer roller 141 is mounted on the second mounting portion 112 via an eccentric screw 142, and the inner roller 151 is mounted on the second mounting portion 112 via a concentric screw 152. The concentric screw 152 is coaxial with the inner roller 151, while the eccentric screw 142 is eccentric with the outer roller 141 (i.e., not coaxial). The eccentricity D of the eccentric screw 142 (see FIG. Figure 5) to dynamically adjust the preload force of the roller and the guide rail 300 during installation, which is beneficial to improving the rigidity and stability of the device and extending the service life of the device.

[0075] Among them, such as Figure 5 As shown, the outer peripheral surface of the outer roller 141 is provided with a circle of "V"-shaped matching surface 1411 along its own circumference to match the guide rail 300. Of course, the matching surface can also be rectangular or other shapes. Figure 7 As shown, the outer circumference of the inner roller 151 is provided with a circle of "V"-shaped mating surfaces 1511 along its own circumference for mating with the guide rail 300. It is understood that the outer side wall of the guide rail 300 is also provided with a "V"-shaped mating surface for mating with the outer roller 141, and the inner side wall of the guide rail 300 is also provided with a "V"-shaped mating surface for mating with the inner roller 151.

[0076] In one embodiment, see Figure 3 The movable substructure 100 further includes a first lubrication assembly 160, which is disposed between two adjacent outer rollers 141 in the outer roller assembly 140 and comprises a first elastic member and a first lubrication head. The first elastic member is configured to provide a force for the first lubrication head to move toward the inner roller assembly 150. When the movable substructure 100 moves along the guide rail 300, the force generated by the deformation of the first elastic member causes the first lubrication head to fully contact the "V"-shaped mating surface of the outer wall of the guide rail 300, thereby reducing friction between the outer rollers 141 and the outer wall of the guide rail 300.

[0077] Regarding the number of first lubrication components 160 , when there are more than two outer rollers 141 , the first lubrication component 160 can be set between any two adjacent outer rollers 141 , between every two adjacent outer rollers 141 , or between some two adjacent outer rollers 141 .

[0078] Optionally, the first elastic member may be a compression spring, and the first lubrication head may be felt.

[0079] Likewise, see Figure 3 The movable substructure 100 further includes a second lubrication assembly 170, which is disposed between two adjacent inner rollers 151 in the inner roller assembly 150 and comprises a second elastic member and a second lubrication head. The second elastic member is configured to provide a force for the second lubrication head to move toward the outer roller assembly 140. When the movable substructure 100 moves along the guide rail 300, the force generated by the deformation of the second elastic member causes the second lubrication head to fully contact the V-shaped mating surface of the inner wall of the guide rail 300, thereby reducing friction between the inner rollers 151 and the inner wall of the guide rail 300.

[0080] Regarding the number of the second lubrication components 170, when there are more than two inner rollers 151, the second lubrication component 170 can be set between any two adjacent inner rollers 151, or between every two adjacent inner rollers 151, or between some two adjacent inner rollers 151.

[0081] Optionally, the second elastic member may be a compression spring, and the second lubrication head may be felt.

[0082] The first lubrication assembly 160 and the second lubrication assembly 170 may be provided at the same time, or only one of them may be provided.

[0083] See also Figures 2 to 4 In some embodiments of the present application, an anti-collision portion 190 is provided on one side of the second mounting portion 112 along the length direction. When the linear conveyor 10 is provided with multiple movable structures 100, the anti-collision portion 190 on each movable structure 100 can absorb the energy generated by the impact by deforming when a collision occurs between movable structures 100, thereby reducing the impact force and protecting the movable structures 100 and the load.

[0084] Optionally, the anti-collision portion 190 may be made of an elastic material such as rubber, and may be fixed by bonding or other methods.

[0085] When the movable structure 100 moves unidirectionally along the guide rail 300, the anti-collision portion 190 can be provided only on one side of the second mounting portion 112 along the length direction; when the movable structure 100 moves bidirectionally along the guide rail 300, the anti-collision portion 190 must be provided on both sides of the second mounting portion 112 along the length direction.

[0086] See also Figures 2 to 4 In some embodiments of the present application, the first mounting portion 111 is provided with a position sensor 180. When the stator structure 200 is composed of multiple stator modules 210 sequentially assembled along the guide rail 300, the position sensor 180 can be used to determine the position of the mover structure 100, thereby determining the area where the next stator module 210 of the mover structure 100 is to be moved. This allows the stator module 210 to be pre-energized to ensure continuous movement of the mover structure 100.

[0087] Optionally, the position sensor 180 can be a position encoder, which can include a mounting base and a reader. The mounting base can be installed on the surface of the first mounting portion 111 away from the second mounting portion 112 using screws or other threaded parts, and the reader extends above the stator structure 200.

[0088] On the other hand, Figure 1As shown, an embodiment of the present application provides a linear conveying device 10, which includes a stator structure 200, a guide rail 300 and several movable structures 100 as described above; the stator structure 200 can cooperate with the first and second magnetic components of the movable structure 100 to generate electromagnetic thrust to the movable structure 100, thereby driving the movable structure 100 to move along the guide rail 300.

[0089] The linear conveying device 10 is provided with a connecting portion between the first mounting portion 111 and the second mounting portion 112 of the base 110, wherein at least one of the second end 111b of the first mounting portion 111 and the second end 112b of the second mounting portion 112 protrudes the connecting body 113 of the connecting portion in a direction away from the stator structure 200, so that the base 110 can be roughly in the shape of an "I". Compared with the existing "U"-shaped base 110, the present application can not only improve the rigidity of the base 110, but also make the connecting body 113 of the base 110 closer to the stator structure 200, shorten the distance between the connecting body 113 and the stator structure 200, greatly reduce the magnetic attraction torque of the stator structure 200 on the base 110, and improve the stability of the linear conveying device 10. Even if there is an assembly error in the movable structure 100, the rigidity and stability of the linear conveying device 10 can be guaranteed.

[0090] like Figure 1 As shown, in one embodiment of the present application, the linear conveyor 10 further includes a stator base 400 and a guide rail base 500. The stator base 400 is used to mount the stator structure 200 and is connected to the guide rail base 500. The guide rail base 500 is used to mount the guide rail 300. Optionally, the guide rail base 500 is connected to the guide rail base 500 by means of screws or the like.

[0091] like Figure 1 As shown, in one embodiment of the present application, the stator structure 200 may include multiple stator modules 210, and the multiple stator modules 210 can be spliced ​​in sequence along the direction of the guide rail 300. The multiple stator modules 210 can be freely spliced ​​and expanded to meet the customer's application requirements of any length.

[0092] The guide rail 300 can be a linear guide rail, a curved guide rail, or a combination of a linear guide rail and a curved guide rail (for example, Figure 1 and Figure 6 Therefore, either all of the stator modules 210 are straight stator modules 210a, or all of the stator modules 210 are curved stator modules 210b, or a portion of the stator modules 210 are straight stator modules 210a and another portion of the stator modules 210 are curved stator modules 210b.

[0093] In order to reduce the splicing error of the guide rail 300, the straight section 310 of the guide rail 300 is a whole, not spliced ​​together, which makes the length of the straight section 310 of the guide rail 300 greater than the length of the straight stator module 210a. For example, Figure 1 In the illustrated linear conveyor 10 , the straight section 310 of the guide rail 300 is twice as long as the linear stator module 210 a. The stator base 400 can be positioned in the middle of the area enclosed by the guide rail 300 to facilitate connection with each stator module 210 .

[0094] like Figure 9 As shown, in one embodiment of the present application, the linear stator module 210a includes a coil base 212, a coil assembly 211, a drive control circuit 214 and a sensor control circuit; the coil base 212 is connected to the stator base 400; the coil assembly 211 is arranged on the side of the coil base 212 away from the stator base 400, and may include a stator core 2111 and a coil winding 2112 wound on the stator core 2111; the drive control circuit 214 is arranged on the side of the coil base 212 facing the guide rail 300, for The excitation current passed into the component 211 causes the coil winding 2112 to generate an excitation magnetic field; the cover 213 is arranged on the side of the coil base 212 away from the guide rail 300, mainly used to protect the stator module 210; the sensor control circuit 215 is arranged between the cover 213 and the coil base 212, and interacts with the position sensor 180 of the mover structure 100 to determine the area where the next stator module 210 of the mover structure 100 is about to operate is located, and pre-energizes the stator module 210 to ensure continuous movement of the mover structure 100.

[0095] Optionally, the center line of the coil assembly 211 is aligned with the center line of the corresponding straight segment 310 of the guide rail 300, which can avoid the electromagnetic thrust from forming a magnetic bias torque in the movement direction of the movable structure 100, thereby extending the service life of the roller of the movable structure 100 and the guide rail 300.

[0096] The structure of the curved stator module 210b is the same as that of the straight stator module 210a. Figure 10 and Figure 11 , a center radius R1 of the coil assembly 211 of the curved stator module 210 b is the same as a center radius R2 of the corresponding curved segment 320 of the guide rail 300 .

[0097] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0098] The above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A moving structure of a linear conveying device, characterized in that: The base includes a first mounting portion, a second mounting portion, and a connecting portion; The first mounting portion and the second mounting portion both have a first end and a second end opposite to each other, the first end of the first mounting portion being used to mount a first magnetic component, and the first end of the second mounting portion being used to mount a second magnetic component opposite to the first magnetic component; The connecting portion has a connecting body, which connects the first mounting portion and the second mounting portion, and the second end of the first mounting portion protrudes from the connecting body along a first direction, and / or the second end of the second mounting portion protrudes from the connecting body along a second direction; wherein, the first direction refers to the direction from the first end to the second end of the first mounting portion, and the second direction refers to the direction from the first end to the second end of the second mounting portion.

2. The movable structure according to claim 1, characterized in that: The first mounting portion further has a middle portion located between its first end and second end, the second mounting portion further has a middle portion located between its first end and second end, and the connecting body connects the middle portion of the first mounting portion and the middle portion of the second mounting portion.

3. The movable structure according to claim 2, characterized in that: The connecting portion further comprises a first reinforcing body, the first reinforcing body being connected to the second end of the first mounting portion and the connecting body; and / or, The connecting portion further includes a second reinforcing body, and the second reinforcing body is connected to the second end of the second mounting portion and the connecting body.

4. The movable structure according to claim 3, characterized in that: The first reinforcing body comprises a first side, a first oblique side, and a second side connected end to end, the first side being connected to the second end of the first mounting portion, and the second side being connected to the connecting body; and / or, The second reinforcing body has a third side, a second oblique side and a fourth side connected end to end in sequence, the three sides are connected to the second end of the second mounting portion, and the fourth side is connected to the connecting body.

5. The movable structure according to claim 1, characterized in that: The connecting portion further has a third reinforcing body, which connects the second end of the first mounting portion and the second end of the second mounting portion; wherein the third reinforcing body is vertically arranged or inclined.

6. The movable structure according to claim 1, characterized in that: The first mounting portion is integrally formed with the connection body or is screwed together, and the second mounting portion is integrally formed with the connection body or is screwed together.

7. The movable member structure according to any one of claims 1 to 6, characterized in that: The movable structure further includes an outer roller assembly and an inner roller assembly, wherein the outer roller assembly and the inner roller assembly are both rotatably disposed on a side of the second mounting portion facing away from the first magnetic assembly, and a gap is formed between the outer roller assembly and the inner roller assembly in a width direction of the second mounting portion; There is a first distance between two adjacent outer rollers in the outer roller assembly in the length direction of the second mounting portion, and there is a second distance between two adjacent inner rollers in the inner roller assembly in the length direction of the second mounting portion, the first distance is greater than the second distance, and the outer rollers are arranged on the second mounting portion through eccentric screw connections, and the inner rollers are arranged on the second mounting portion through concentric screw connections, and / or, The mover structure further includes a first lubrication assembly, which is arranged between two adjacent outer rollers in the outer roller assembly and has a first elastic member and a first lubrication head, wherein the first elastic member is used to provide a force for the first lubrication head to move toward the inner roller assembly, and / or, The mover structure also includes a second lubrication assembly, which is arranged between two adjacent inner rollers in the inner roller assembly and has a second elastic member and a second lubrication head. The second elastic member is used to provide a force to the second lubrication head to move toward the outer roller assembly.

8. The mover structure according to any one of claims 1 to 6, characterized in that: The movable structure further includes at least one of the following two features: A position sensor is provided at the first end of the first mounting portion; An anti-collision portion is provided on one side of the second mounting portion along the length direction.

9. A linear conveying device, characterized in that: It comprises a stator structure, a guide rail and a plurality of mover structures according to any one of claims 1 to 8; The stator structure can cooperate with the first and second magnetic components of the mover structure to generate electromagnetic thrust to the mover structure, thereby driving the mover structure to move along the guide rail.

10. The linear conveying device according to claim 9, characterized in that: The stator structure includes a plurality of stator modules, and the plurality of stator modules can be spliced ​​in sequence along the direction of the guide rail.

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