Linear motor stator module, linear motor stator assembly and linear motor assembly

Abstract

The invention belongs to the field of linear motors, and particularly relates to a linear motor stator module, a linear motor stator assembly and a linear motor assembly.The linear motor stator module comprises a supporting assembly, an electric excitation magnetic field generating assembly and a circuit board; the electric excitation magnetic field generation assembly comprises two fixing plates and a stator fixed between the two fixing plates, and the same sides of the two fixing plates are fixed to the supporting assembly. The circuit board is arranged on the supporting assembly, an electric connection structure is arranged on the side, facing the stator, of the circuit board, and the multiple coils in the stator are electrically connected with the electric connection structure. The circuit board is arranged on the supporting assembly, the problem that the circuit board affects the performance and efficiency of the stator is avoided on the basis that the reliability of the stator is guaranteed, meanwhile, the electric connection structure is arranged on one side of the circuit board, the difficulty and complexity of electric connection between the circuit board and the coils can be simplified, the installation efficiency is improved, and the connection stability is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the field of linear motors, and specifically relates to a linear motor stator module, a linear motor stator assembly and a linear motor assembly. Background Art

[0002] Linear motor is a transmission device that converts electrical energy directly into linear motion mechanical energy without any intermediate conversion mechanism. Since linear drive can achieve "zero" transmission, its application in the fields of maglev transportation, wheel-rail transportation, logistics transmission, precision machine tools, etc. is gaining more and more attention.

[0003] Currently, there are modular linear motor electronics whose stators are made up of multiple stator modules. This method can solve the transportation problem well and has the advantage of customizing the stator path. In some linear motor stator devices, the printed circuit board (drive board and / or control board) is directly used as a fixed plate. Although this approach can improve the compactness of the stator device to a certain extent while ensuring the reliability of the stator device, when the printed circuit board enters the magnetic field range that can be generated by the electrically excited magnetic field generating component, the conductor on the circuit board (such as copper or aluminum) will feel the change in the magnetic field and generate eddy currents. These eddy currents are induced currents caused by changes in the magnetic field. It will form a closed loop inside the printed circuit board and generate additional magnetic fields, thereby affecting the magnetic field distribution around the electrically excited magnetic field generating component, resulting in uneven distribution of the magnetic field generated by the electrically excited magnetic field generating component, magnetic field distortion, and energy loss, which ultimately interferes with the performance and efficiency of the linear motor module.

[0004] However, if the printed circuit board (driving board and / or control board) in the linear motor stator device is arranged at other positions, it is difficult to connect the circuit board with the coil, and its processing and production is difficult and costly. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a linear motor stator module, a linear motor stator assembly and a linear motor assembly which have a stable and reliable structure and can ensure the performance of the stator module.

[0006] The present invention provides a linear motor stator module, comprising a support component, an electrically excited magnetic field generating component and a circuit board;

[0007] The electrically excited magnetic field generating assembly comprises two fixing plates and a stator fixed between the two fixing plates, and the same side of the two fixing plates is fixed to the supporting assembly;

[0008] The circuit board is arranged on the supporting assembly, and an electrical connection structure is arranged on a side of the circuit board facing the stator, and a plurality of coils in the stator are electrically connected to the electrical connection structure.

[0009] In one of the embodiments, the electrical connection structure includes a plurality of groups of connectors protruding toward one side of the electrically excited magnetic field generating component, and each group of connectors is used to electrically connect to one of the coils.

[0010] In one embodiment, the stator and the support assembly have a first spacing;

[0011] One end of the connecting member close to the electrically excited magnetic field generating component extends into the range of the first interval.

[0012] In one embodiment, a group of the connecting members includes two connecting blocks, and the two connecting blocks are respectively arranged on two sides of one of the coils.

[0013] In one of the embodiments, a plurality of interlocking rods are provided on one side of one of the fixing plates facing the supporting assembly, and one interlocking rod is embedded between every two of the connecting blocks.

[0014] In one embodiment, the engaging rod and the connecting block are both rectangular, trapezoidal or triangular structures.

[0015] In one of the embodiments, at least a portion of the engaging rods are provided with a fastening fitting structure, and the fixing plate is fixedly connected to the supporting assembly by fasteners provided on the fastening fitting structure.

[0016] In one embodiment, the gap between two connecting blocks in one group of connecting members is larger than the gap between two adjacent connecting blocks in two adjacent groups of connecting members.

[0017] The interlocking rods include wide rods and narrow rods arranged at intervals, wherein the wide rod is arranged between the gaps of two connecting blocks of a group of connecting members, and the narrow rod is arranged between the gaps of two adjacent connecting blocks in two adjacent groups of connecting members;

[0018] The fastening engagement structure is arranged on the wide rod.

[0019] In one embodiment, the support assembly includes a base and a first end cap;

[0020] The connecting block and the embedding rod are mounted on the base, and the first end cover is mounted on the connecting block and the embedding rod;

[0021] The fastener fastens the first end cover, the engaging rod and the base.

[0022] In one embodiment, the thickness of the circuit board is thicker than the thickness of the fixing plate.

[0023] In one of the embodiments, the base body includes a first substrate, a connecting plate, and a second substrate connected in sequence;

[0024] The first substrate and the second substrate are parallel to each other, and the connecting block and the engaging rod are arranged on one side of the second substrate;

[0025] An embedding groove is provided on the side of the first substrate, and the side of the circuit board facing away from the electrically excited magnetic field generating component is embedded in the embedding groove.

[0026] In one embodiment, the first end cover is connected to the first substrate via a fastener on a side facing away from the electrically excited magnetic field generating assembly.

[0027] In one embodiment, a first potting cavity is formed between the first end cover, the first substrate, the connecting plate and the second substrate, and the first potting cavity is used for pouring epoxy resin.

[0028] In one embodiment, the support assembly further includes a second end cap disposed on a side of the first substrate and the second substrate away from the first end cap;

[0029] A component installation cavity is formed between the second end cover, the first substrate, the connecting plate and the second substrate, and the component installation cavity is used to install components;

[0030] Another fixing plate is placed on the other side of the second base plate, the second end cover is placed on the fixing plate, and the second end cover, the fixing plate and the second base plate are fixedly connected by fasteners.

[0031] In one embodiment, the second end cap is an encoder printed circuit board.

[0032] In one embodiment, the stator includes a plurality of iron cores arranged at intervals and coils arranged on an even number of the iron cores;

[0033] Two ends of each coil are electrically connected to the circuit board.

[0034] In one of the embodiments, limiting grooves are correspondingly provided on the two fixing plates, and the iron core is embedded in the two corresponding limiting grooves.

[0035] In one of the embodiments, the electrically excited magnetic field generating assembly further includes an end plate;

[0036] The end plate is arranged on a side of the two fixing plates away from the supporting assembly, and the end plate is fixedly connected to the two fixing plates.

[0037] In one embodiment, the electrically excited magnetic field generating component further includes a circuit connection board, the circuit connection board is arranged corresponding to the end plate, the coil is electrically connected to the circuit connection board, and the circuit connection board is electrically connected to the electrical connection structure.

[0038] In one of the embodiments, two rows of through slots are provided on the circuit connection board, the slot width of the through slots is larger than the diameter of the coil after winding, and the coil ends are arranged through the through slots.

[0039] In one embodiment, the circuit connection plate is divided into an upper connection plate, an intermediate electrical connection plate and a lower connection plate by the two through slots, and longitudinal line connection plates are further provided at both ends of the upper connection plate, the intermediate electrical connection plate and the lower connection plate;

[0040] Coil slots are provided at both ends of the intermediate electrical connection plate, and the coil ends are welded to the coil slots;

[0041] A plug connector electrically connected to a plurality of coil slots is arranged on the side of the circuit connection board away from the end plate, and the electrical connection structure is a plug-in mating head arranged on the support assembly.

[0042] In one of the embodiments, the electrically excited magnetic field generating assembly further comprises a blocking clamping plate engaged with the through slot;

[0043] After the coil end is engaged with the coil clamping groove, the blocking clamping plate is engaged with the through groove.

[0044] In one of the embodiments, the circuit connection board, the sealing clamping plate, the end plate and the two fixing plates enclose a second potting cavity, and the second potting cavity is used for pouring epoxy resin.

[0045] In one embodiment, ends of the two fixing plates facing away from the end plates are spaced a third distance from the circuit connection board.

[0046] In one of the embodiments, at least two coils are coaxially arranged in parallel on one of the iron cores, and the two coils are connected in parallel.

[0047] In one embodiment, the linear motor stator module is a straight segment module, the fixing plate is a straight plate, and the plurality of coils in the stator are arranged in a linear array;

[0048] Alternatively, the linear motor stator module is a circular arc segment module, the fixing plate is an arc plate, and the plurality of coils in the stator are arranged in an arc array.

[0049] In one of the embodiments, sockets are provided at both ends of the support assembly. When the two linear motor stator modules are spliced, the relative sockets in the two linear motor stator modules are aligned, and gold fingers are provided in the two sockets to achieve electrical connection between them.

[0050] In one of the embodiments, positioning holes are provided at both ends of the support assembly. When the two linear motor stator modules are spliced, the relative positioning holes in the two linear motor stator modules are aligned, and positioning pins are provided in the two positioning holes to achieve mutual positioning.

[0051] The present invention also provides a linear motor stator assembly, which is formed by splicing at least two linear motor stator modules end to end, and two adjacent linear motor stator modules are electrically connected.

[0052] The present invention discloses a linear motor assembly, comprising a linear motor stator assembly and a motor mover arranged on the linear motor stator assembly.

[0053] The beneficial effect of the present invention is that the present invention arranges the circuit board on the support assembly so that the circuit board is far away from the magnetic field range generated by the electrically excited magnetic field generating assembly, and avoids the problem that the circuit board affects the performance and efficiency of the stator on the basis of ensuring the reliability of the stator. At the same time, it can also solve the problem that the printed circuit board may generate heat due to the energy loss caused by eddy current, further increase the temperature of the motor, and reduce the life of the motor. In addition, the fixed plate is only used as a fixed support and a connecting function, so its material can be prepared by non-conductive and / or non-magnetic materials, and its optional materials are more (not used as a substrate of a printed circuit board), and the integrity of the fixed plate is also stronger, and its support and fixing reliability is higher. In addition, when used specifically, the stator will be connected to the two fixed plates by glue filling, so the electrically excited magnetic field generating assembly will be used as a combination that cannot be disassembled. At this time, once the fixed plate is used as a circuit board, after the circuit board is damaged, the entire electrically excited magnetic field generating assembly will be unusable, it cannot be maintained, and the replacement cost is extremely high. Therefore, the present invention separates the circuit board from the electrically excited magnetic field generating assembly, and it is easier to maintain and replace after the circuit board fails.

[0054] In addition, by providing an electrical connection structure on one side of the circuit board, the difficulty and complexity of the electrical connection between the circuit board and the multiple coils can be simplified, the installation efficiency can be improved, and the connection stability can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Attached Figure 1 It is a structural schematic diagram of the present invention;

[0056] Attached Figure 2 It is a front view of the present invention;

[0057] Attached Figure 3 for Figure 2 Middle AA section view;

[0058] Attached Figure 4 For attachment Figure 3 A schematic diagram of a structure when the circuit board is thicker than the fixing plate;

[0059] Attached Figure 5 It is a schematic diagram of the structure after the first cover plate in the present invention is disassembled;

[0060] Attached Figure 6 For attachment Figure 5 A partial enlarged view of point B in the middle;

[0061] Attached Figure 7 for Figure 4 Schematic diagram of the structure after the epoxy resin is hidden;

[0062] Attached Figure 8 for Figure 4 A schematic diagram of the structure after one of the fixed plates is removed;

[0063] Attached Fig. 9 for Figure 7 A schematic diagram of the structure from another angle with the second end cover removed;

[0064] Attached Fig.10 It is a structural schematic diagram of the substrate in the present invention;

[0065] Attached Fig.11 It is a schematic diagram of the structure of the electrically excited magnetic field generating component in the embodiment of the circuit connection board of the present invention;

[0066] Attached Fig.12 For attachment Fig.11 Schematic diagram of parallel structure of coil group;

[0067] Attached Fig.13 For attachment Fig.12 Schematic diagram after installing the circuit connection board in the state;

[0068] Attached Fig.14 For attachment Fig.13 A partial enlarged view of point C in the middle;

[0069] Attached Fig.15 For attachment Fig.13 A schematic diagram of matching the head end connection end and the tail end connection end with the coil slot in the state;

[0070] Attached Fig.16 For attachment Fig.15 A partial enlarged view of point D in the middle;

[0071] Attached Fig.17 For attachment Fig.13 Schematic diagram of the circuit connection board in this state;

[0072] Attached Fig.18 For attachment Fig.13 Schematic diagram of installing the plugging clamping plate in the state;

[0073] Attached Fig.19 The figure is a schematic diagram of a coil assembly and a coil frame in an embodiment of a circuit connection board of the present invention.

[0074] In the figure, 1-support assembly; 11-base; 111-first substrate; 1111-limiting groove; 112-connecting plate; 113-second substrate; 12-first end cover; 13-first potting cavity; 14-second end cover; 15-gold finger end cover with groove; 16-component installation cavity; 2-electrically excited magnetic field generating assembly; 21-fixing plate; 211-embedded rod; 212-fastening matching structure; 213-limiting groove; 22-stator; 221-iron core; 222-coil; 2221-head end connection end; 222 2-tail end connection end; 23-end plate; 24-second potting cavity; 25-coil skeleton; 251-sleeve; 252-limiting plate; 26-circuit connection plate; 261-upper connection plate; 262-middle electrical connection plate; 263-lower connection plate; 264-longitudinal line connection plate; 265-through groove; 266-coil slot; 267-plug connector; 27-sealing clamping plate; 28-third interval; 3-circuit board; 31-connecting block; 4-first interval; 5-fastener; 6-socket; 7-positioning hole; 8-epoxy resin. DETAILED DESCRIPTION

[0075] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0076] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0077] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0078] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0080] As attached Figure 1 -Attached Fig.18 As shown, the present invention provides a linear motor stator module, including a support component 1, an electrically excited magnetic field generating component 2 and a circuit board 3, wherein the support component 1 is used as a support structure to install the electrically excited magnetic field generating component 2, the circuit board 3 and some other supporting parts, and the support component 1 can be made of a material with good rigidity, such as a metal material; the electrically excited magnetic field generating component 2 can be electrically excited, and can generate a corresponding magnetic field after being excited. When in use, the motor mover runs on the electrically excited magnetic field generating component 2;

[0081] The electrically excited magnetic field generating component 2 includes a fixing frame and a stator 22 arranged on the fixing frame, wherein the fixing frame includes two fixing plates 21, the stator 22 is fixed between the two fixing plates 21, and the same side of the two fixing plates 21 is fixed to the supporting component 1, and the two fixing plates 21 are used to support and fix the stator 22 on the one hand, and to fix the stator 22 to the supporting component 1 on the other hand, so that the entire electrically excited magnetic field generating component 2, the supporting component 1 and the circuit board 3 form an integral structure; and the two fixing plates 21 clamp the stator 22 in a clamping state, and the fixing and support of the stator 22 are stable and reliable, which can improve the stability and reliability of the linear motor stator module;

[0082] The circuit board 3 is arranged on the supporting assembly 1, so the circuit board 3 is relatively far away from the electrically excited magnetic field generating assembly 2, and an electrical connection structure is arranged on the side of the circuit board 3 facing the stator 22, and the multiple coils 222 in the stator 22 are electrically connected to the electrical connection structure, that is, the circuit board 3 serves as a driving board to provide the set current and voltage to the coils 222 in the stator 22, so that by adjusting the parameters of the driving board, the magnetic field generated by the electrically excited magnetic field generating assembly 2 can be changed, and then the speed, direction and acceleration of the linear motor assembly can be controlled to meet specific needs.

[0083] The present invention sets the circuit board 3 on the support assembly 1 so that the circuit board 3 is far away from the magnetic field range generated by the electrically excited magnetic field generating assembly 2. On the basis of ensuring the reliability of the stator 22, the problem that the circuit board 3 affects the performance and efficiency of the stator 22 is avoided. At the same time, it can also solve the problem that the printed circuit board may heat up due to the energy loss caused by eddy current, further increase the temperature of the motor, and reduce the life of the motor. In addition, the fixed plate 21 only serves as a fixed support and connection, so its material can be made of non-conductive and / or non-magnetic materials, and its optional materials are more (not used as a substrate for a printed circuit board), and the integrity of the fixed plate 21 is also stronger, and its support and fixation reliability is higher. In addition, when used specifically, the stator 22 will be connected to the two fixed plates 21 by glue filling, so the electrically excited magnetic field generating assembly 2 will be used as a combination that cannot be disassembled. At this time, once the fixed plate 21 is used as the circuit board 3, after the circuit board 3 is damaged, the entire electrically excited magnetic field generating assembly 2 will be unusable, it cannot be maintained, and the replacement cost is extremely high. Therefore, the present invention separates the circuit board 3 from the electrically excited magnetic field generating assembly 2, and it is easier to maintain and replace after the circuit board 3 fails.

[0084] In addition, by providing an electrical connection structure on one side of the circuit board 3, the difficulty and complexity of the electrical connection between the circuit board 3 and the plurality of coils 222 can be simplified, thereby improving installation efficiency and ensuring connection stability.

[0085] Reference Figure 3 -Attached Figure 5 In one embodiment, the electrical connection structure includes a plurality of groups of connectors protruding toward one side of the electrically excited magnetic field generating component 2, and each group of connectors is used to electrically connect to one of the coils 222. In this embodiment, the distance and difficulty of the electrical connection between the coil 222 and the circuit board 3 are greatly simplified, which can save materials and assembly time. A soldering pad or a terminal is provided on the connector, and the end face of the coil 222 is directly welded to the soldering pad or the terminal to complete the electrical connection between the two.

[0086] Reference Figure 8In one embodiment, the stator 22 and the support component 1 have a first gap 4, that is, the coil 222 is at a certain distance from the end face of the support component 1; the end of the connector close to the electrically excited magnetic field generating component 2 extends into the range of the first gap 4, so that the circuit connection structure of the connector and the coil 222 can be within the first gap 4, simplifying the difficulty of electrical connection, and the connecting cable can be placed in the first gap 4 to improve the compactness of the structure. In this embodiment, the first gap 4 can be used to simplify the connection difficulty between the coil 222 and the connector and provide a connection space, and can also be used as a part of the second potting cavity 24, which can be subsequently poured with epoxy resin 8 to enhance the connection stability and reliability between the coil 222 and the connector. In the embodiment of pouring epoxy resin 8, the end face of the coil 222 can extend out of the epoxy resin 8, so that when the circuit board 3 needs to be replaced, the electrical connection between the coil 222 and the connector on the circuit board 3 can be completed again, thereby realizing the replaceability of the circuit board 3 and reducing the use cost.

[0087] In one embodiment, a group of the connecting parts includes two connecting blocks 31, and the two connecting blocks 31 are respectively arranged on both sides of a coil 222. In this embodiment, a coil 222 is wound with a wire, which has a head end and a tail end, and the head end and the tail end are respectively connected to a connecting block 31, so that the entire electrical connection structure is neat and standardized, and there will be no knotting or entanglement problems, which simplifies the connection difficulty.

[0088] In one of the embodiments, a plurality of interlocking rods 211 are disposed on one side of the fixing plates 21 facing the supporting assembly 1 , and an interlocking rod 211 is embedded between every two connecting blocks 31 . In this embodiment, an engaging rod 211 is provided on the fixed plate 21 to engage with the gap between the connecting blocks 31. On the one hand, it can serve as an installation positioning structure of the fixed plate 21 and the circuit board 3 to ensure that multiple connecting blocks 31 and multiple coils 222 can be aligned one by one, thereby simplifying the difficulty of connecting the circuit board 3 and the coil 222. At this time, in an embodiment in which a limiting groove 213 for installing the iron core 221 is provided on the fixed plate 21, the connecting block 31 and the coil 222 are both positioned by the fixed plate 21, which can well control the relative position of the connecting block 31 and the coil 222, thereby ensuring the alignment of the two, further simplifying the difficulty of connecting the circuit board 3 and the coil 222. On the other hand, the engaging rod 211 can also fill the gap between every two connecting blocks 31, so that the circuit board 3 and the fixed plate 21 form an integral plate to ensure integrity. In addition, after the fixed plate 21 is fixed, such a connection can also limit the position of the circuit board 3.

[0089] In one embodiment, the engaging rod 211 and the connecting block 31 are both rectangular structures (refer to Figure 6), trapezoidal structure or triangular structure, preferably, the interlocking rod 211 and the connecting block 31 can form a complete plate body after being interlocked with each other, so as to improve the mutual positioning and limiting strength. When the stator module of the linear motor is a straight segment module, the interlocking rod 211 and the connecting block 31 can both be a rectangular structure, a trapezoidal structure or a triangular structure. When the stator module of the linear motor is an arc segment module, the interlocking rod 211 and the connecting block 31 preferably adopt a trapezoidal structure or a triangular structure.

[0090] In one embodiment, at least part of the interlocking rod 211 is provided with a fastening structure 212, which can be a through hole, a threaded hole or a puncture-type structure (for example, the thickness is thinned in part to facilitate puncture and penetration), and the fixing plate 21 is fixedly connected to the support component 1 by providing a fastener 5 on the fastening structure 212, and the fastener 5 can be a bolt, a rivet or a pin. In a preferred embodiment, the fastening structure 212 is a through hole, and the support component 1 is provided with a threaded hole, and the fastener 5 is a bolt that is screwed with the threaded hole through the through hole, thereby simplifying the connection difficulty while ensuring the connection strength. In this embodiment, the connection between the fixing plate 21 and the support component 1 is achieved through the fastener 5, so that the electrically excited magnetic field generating component 2 and the support component 1 can be detachable, and the fixing plate 21 and the circuit board 3 can be detachable.

[0091] In one embodiment, the gap between the two connecting blocks 31 in one group of the connecting members is larger than the gap between the two adjacent connecting blocks 31 in two adjacent groups of the connecting members; the engaging rod 211 includes a wide rod and a narrow rod arranged at intervals, the wide rod is arranged between the gap between the two connecting blocks 31 in one group of the connecting members, and the narrow rod is arranged between the gap between the two adjacent connecting blocks 31 in two adjacent groups of the connecting members; the fastening matching structure 212 is arranged on the wide rod;

[0092] In this embodiment, the gap between the two connecting blocks 31 in one group is large, while the gap between the connecting blocks 31 between two adjacent groups is small. The two connecting blocks 31 in one group connect the head end and the tail end of the same coil 222, and the gap between the two connecting blocks 31 is used to install the wide rod, and the wide rod is used to connect with the fastener 5, which can improve the connection strength of the chimeric rod 211. The gap between the connecting blocks 31 between two adjacent groups is used to connect the narrow rod, which can ensure a compact structure and make the chimeric rods 211 arranged with a wide and a narrow interval, which has a certain anti-fool effect.

[0093] In one embodiment, the support assembly 1 includes a base 11 and a first end cover 12; the connecting block 31 and the engaging rod 211 are mounted on the base 11, and the first end cover 12 is mounted on the connecting block 31 and the engaging rod 211; the fastener 5 fastens the first end cover 12, the engaging rod 211 and the base 11. In this embodiment, a first end cover 12 is also provided above the connecting block 31 and the engaging rod 211, and the first end cover 12 can press the circuit board 3, thereby achieving fixation and limitation of the circuit board 3.

[0094] Reference Figure 4 In one preferred embodiment, the thickness of the circuit board 3 is thicker than that of the fixing plate 21. In this case, the circuit board 3 can accommodate more circuits, and the motor drive board and the motor control board can be combined into one to improve the compactness of the device. At the same time, the structural strength of the circuit board 3 can also be improved.

[0095] Reference Figure 3 In other embodiments, the thickness of the fixing plate 21 and the circuit board 3 may also be consistent and located on the same plane. At this time, the first end cover 12 can press the connecting block 31 and the engaging rod 211 at the same time, and at the same time fix and limit the circuit board 3 and the fixing plate 21.

[0096] Reference Fig.10 In one embodiment, the base 11 includes a first substrate 111, a connecting plate 112 and a second substrate 113 connected in sequence; the first substrate 111 and the second substrate 113 are parallel to each other, and preferably, the cross-sections of the first substrate 111, the connecting plate 112 and the second substrate 113 are in an "I"-shaped structure, and the connecting block 31 and the engaging rod 211 are arranged on one side of the second substrate 113; an engaging groove 1111 is provided on the side of the first substrate 111, and the engaging groove 1111 is preferably a rectangular card groove, and the side of the circuit board 3 away from the electrically excited magnetic field generating component 2 is engaged in the engaging groove 1111. In this embodiment, one end of the circuit board 3 is engaged in the engaging groove 1111, and is attached to the circuit board 3. Fig.10 The other end of the circuit board 3 is provided with a connecting block 31 which is engaged with a plurality of engaging rods 211, and is clamped and limited by the first end cover 12 and the second base plate 113, so as to align and attach. Fig.10 The limiting structure is provided in the up and down directions, in the direction toward the electrically excited magnetic field generating component 2, and in the left and right directions, so as to complete the limiting installation of the circuit board 3 in all directions. Moreover, the limiting structure does not have any fasteners to fasten the circuit board 3, thereby reducing the possibility of bending, deformation or damage caused by excessive local force on the circuit board 3, thereby increasing the service life of the circuit board 3.

[0097] In one embodiment, the first end cover 12 is connected to the first substrate 111 via a fastener 5 on one side away from the electrically excited magnetic field generating component 2, thereby achieving fixed limitation on both sides of the first end cover 12 and realizing a detachable setting of the first end cover 12.

[0098] In one embodiment, referring to the attached Figure 7 The first end cover 12, the first substrate 111, the connecting plate 112 and the second substrate 113 form a first potting cavity 13, see the attached Figure 1 -Attached Figure 6 The first potting cavity 13 is used for pouring epoxy resin 8. In this embodiment, the circuit board 3 is arranged in the first potting cavity 13 and is covered or coated with the epoxy resin 8. At this time, the first end cover 12, the substrate 11 and the circuit board 3 are semi-permanently connected by the epoxy resin 8. In this embodiment, the service life of the circuit board 3 can be improved, but the circuit board 3 and the support assembly 1 cannot be disassembled from each other. Therefore, when the circuit board 3 fails and needs to be replaced, the entire circuit board 3 and the support assembly 1 need to be replaced.

[0099] In one embodiment, the support assembly 1 also includes a second end cover 14 arranged on the side of the first substrate 111 and the second substrate 113 away from the first end cover 12. In this embodiment, another fixed plate 21 is mounted on the other side of the second substrate 113, and the second end cover 14 is mounted on the fixed plate 21. The second end cover 14, the fixed plate 21 and the second substrate 113 are fixedly connected by fasteners 5. At this time, the installation methods of the two fixed plates 21 are consistent and relatively installed, which can improve the structural symmetry; a component installation cavity 16 is formed between the second end cover 14, the first substrate 111, the connecting plate 112 and the second substrate 113. The component installation cavity 16 is used to install components. The components can be motor control boards, and can also be other components such as encoders. In another specific embodiment, the component installation cavity 16 can also be used as a potting cavity to be poured with epoxy resin 8 to improve the fixing stability and integrity of the components.

[0100] In one embodiment, the second end cover 14 is an encoder printed circuit board, that is, the second end cover 14 is directly an encoder board, which can realize the position and speed monitoring of the motor mover.

[0101] Reference Figure 8 In one embodiment, the stator 22 includes a plurality of iron cores 221 arranged at intervals and coils 222 arranged on an even number of the iron cores 221; both ends of each of the coils 222 (i.e., the head end of the coil 222 and the tail end of the coil 222) are electrically connected to the circuit board 3.

[0102] In one of the embodiments, limiting grooves 213 are correspondingly provided on the two fixed plates 21, and the iron core 221 is embedded in the two corresponding limiting grooves 213. In this embodiment, the coil 222 is wound on the iron core 221, and the iron core 221 is limited and fixed by the limiting grooves 213, so the coil 222 and the iron core 221 are both positioned and limited by the limiting grooves 213. At the same time, the connecting block 31 on the circuit board 3 is also positioned by the engaging rod 211 on the fixed plate 21, so the coil 222 and the connecting block 31 are accurately positioned.

[0103] In one of the embodiments, the fixing frame also includes an end plate 23; the end plate 23 is arranged on a side of the two fixing plates 21 away from the supporting assembly 1, and the end plate 23 is fixedly connected to the two fixing plates 21, and the end plate 23 and the two fixing plates 21 can be connected by fasteners. In this embodiment, by setting the end plate 23, on the one hand, the stator 22 can be physically protected on the side of the end plate 23, and on the other hand, the two fixing plates 21 can be connected to determine the relative positions of the two fixing plates 21.

[0104] In one embodiment, a coil group may be wound around the core 221, and the coil group includes at least one coil 222; in one preferred embodiment, as shown in the attached Fig.11 -Attached Fig.19 As shown, the coil group includes at least two coaxially arranged coils 222, that is, at least two coils 222 are arranged in sequence from top to bottom along the length direction of the iron core 221, and at least two coils 222 of the coil group are connected in parallel. The number of coils 222 in the coil group is selected according to the length of the iron core 221 and the power required by the motor.

[0105] The linear motor stator module provided in this embodiment increases the current flowing through a group of coils by arranging at least two coils 222 in parallel on at least part of the iron core 221 coaxially, thereby increasing the power of the linear motor stator module under the same size of the linear motor stator module to achieve a high-power and high-current working environment. This solves the problem that the conventional solution of increasing the current flowing to increase the motor power can only be achieved by increasing the diameter of the enameled wire of the coil 222, which makes it difficult to wind the coil 222 due to the thick diameter of the enameled wire, and even requires increasing the size of the iron core and the fixing frame.

[0106] Reference Fig.19 , attached Fig.19Only the lower coil is retained, and the upper coil is hidden. In one embodiment, the linear motor stator module further includes a coil skeleton 25, which is sleeved outside the iron core 221, and the coil 222 is wound outside the coil skeleton 25; the coil skeleton 25 includes a sleeve 251 and a limit plate 252 arranged at both ends of the sleeve 251; each coil 222 corresponds to a coil skeleton 25. In this embodiment, the coil skeleton 25 can simplify the winding difficulty of the coil 222 and improve the winding neatness, thereby improving production efficiency and quality.

[0107] In one embodiment, the fixing frame also includes a circuit connection board 26; the circuit connection board 26 is arranged corresponding to the end plate 23, that is, the circuit connection board 26 is arranged on the other side of the two fixing plates 21, and the two fixing plates 21, the circuit connection board 26 and the end plate 23 are surrounded to form a rectangular cavity, the iron core 221 and the coil 222 are arranged in the rectangular cavity, and the coil 222 is electrically connected to the circuit connection board 26, that is, the coil 222 is electrically connected to the circuit board 3 through the circuit connection board 26, thereby simplifying the difficulty of electrical connection between the coil 222 and the circuit board 3.

[0108] In a conventional connection method, the coil 222 is directly welded to one of the fixed plates 21, and one of the fixed plates 21 is directly prepared as a printed circuit board, that is, one of the fixed plates 21 is directly used as a motor drive board. In this connection method, on the one hand, the printed circuit board will generate an additional magnetic field, which interferes with the performance and efficiency of the linear motor module. On the other hand, the enameled wire of the coil 222 in the present invention adopts a thinner diameter, and a coil 222 has two ends, so the ends of multiple coils 222 are welded to the fixed plate 21, and the operation space is small and the steps are cumbersome. Therefore, the electrical connection between the coil 222 and the fixed plate 21 is also very time-consuming and laborious. Once a coil 222 fails to be welded to the fixed plate 21, resulting in insufficient length of the end of the coil 222, it is necessary to disassemble all the coils 222 that have been welded, and disassemble one of the fixed plates 21, and finally replace the coil 222 with insufficient length for re-welding, and the fault tolerance rate is extremely low. In the above manner, during the welding process between the ends of the coil 222 and the fixed plate 21, the operation space is small, the operation is difficult, the fault tolerance rate is low, and the yield rate is low. In order to solve the above problems caused by the integration of the drive board on the fixed plate 21, the present embodiment sets the present circuit connection board 26 to realize the electrical connection between the coil 222 and the circuit board 3. The circuit connection board 26 in the present embodiment is only used for conducting electricity and is used to connect multiple coils 222 to the circuit board 3. The circuit connection board 26 can reduce the generation of additional magnetic fields on the one hand, and can greatly facilitate the electrical connection of the coil 222 on the other hand.

[0109] In one embodiment, the circuit connection board 26 is provided with two rows of through slots 265, the slot width of the through slots 265 is greater than the diameter of the two strands of the coil 222 after winding, and the ends of the coil 222 are arranged through the through slots 265. Fig.12 The head ends of two or more parallel coils 222 are twisted together to form one, and the tail ends are also twisted together to form one to complete the parallel connection. Finally, one coil group has two connection ends, namely the head end connection end 2221 and the tail end connection end 2222. Several groups of coil groups have several head end connection ends 2221 and tail end connection ends 2222. Several head end connection ends 2221 pass through one of the through slots 265, and several tail end connection ends 2222 pass through the other through slots 265. At this time, the coil 222 can be electrically connected to the circuit connection board 26 on the side of the circuit connection board 26 away from the end plate 23, with a large enough operating space, which is convenient for the assembly personnel to operate, reduces the processing difficulty, and improves the processing efficiency and yield rate.

[0110] During the actual preparation process, a certain length can be reserved for the head and tail ends of the coil 222 so that the head end connection end 2221 and the tail end connection end 2222 have sufficient reserved length. At this time, several head end connection ends 2221 can be aligned with one of the through slots 265 on the same horizontal line through tools such as clamps, and several tail end connection ends 2222 can be aligned with another through slot 265 on another horizontal line, so as to facilitate the installation of the circuit connection board 26.

[0111] In addition, the present solution also solves another problem, namely, the thinner enameled wire has a flexible property. Therefore, after a certain length is reserved at the head and tail ends of a single enameled wire, the ends of the enameled wire cannot be shaped due to the flexible property. This also leads to the fact that when the single enameled wire is welded to the circuit connection board 26, it is difficult to keep several head ends and tail ends on the same horizontal line, so that during the installation of the circuit connection board 26, part of the head end and the tail end cannot pass through the through groove 265 smoothly, and it is necessary to use additional tools to take out the end of the enameled wire from the rectangular cavity. This is not only time-consuming and labor-intensive, but also the single enameled wire is very brittle, and it is easy to cause the enameled wire to break during the process of taking it out, which leads to processing failure and a high scrap rate. The present invention twists the head ends of at least two coils 222 in a coil group into one, and the tail ends into one, so that at least two coils 222 are connected in parallel and the welding times of the coils 222 and the circuit connection board 26 are reduced, and the shaping effect of the head end connection end 2221 and the tail end connection end 2222 is increased, thereby improving the success rate of all the head end connection ends 2221 and the tail end connection ends 2222 passing through the through groove 265 at one time, and improving the structural strength of the head end connection end 2221 and the tail end connection end 2222, thereby reducing the possibility of the enameled wire breaking during welding and improving the yield rate.

[0112] The circuit connection board 26 is provided with two rows of through slots 265 as a preferred solution, which does not exclude other welding methods between the coil 222 and the circuit connection board 26, such as providing a pad on the side of the circuit connection board 26 close to the end plate 23, and the end of the coil 222 is electrically connected to the pad. This method has a small welding operation space and is complicated to process. Another example is providing a plurality of through holes on the circuit connection board 26, and the end of a coil 222 passes through the through hole and the circuit connection board 26. This method requires a large number of coil 222 ends to be inserted into a through hole one by one, which is labor-intensive and easily causes the enameled wire to break, resulting in a low yield. Although these methods are complicated to process, they solve the problem of a closed loop formed inside the printed circuit board due to the integration of the drive board on the fixed board 21, which generates an additional magnetic field.

[0113] In one embodiment, referring to the attached Fig.13 , the circuit connection board 26 is divided into an upper connection board 261, an intermediate electrical connection board 262 and a lower connection board 263 by the two through slots 265, and longitudinal line connection boards 264 are also provided at both ends of the upper connection board 261, the intermediate electrical connection board 262 and the lower connection board 263; coil card slots 266 are provided at both ends of the intermediate electrical connection board 262, that is, coil card slots 266 are provided at the lower end of the upper through slot 265 and the upper end of the lower through slot 265, and solder pads are provided on the coil card slots 266, and the ends of the coil 222 are welded to the coil card slots 266, that is, the head end connection end 2221 and the tail end connection end 2222 are welded to the coil card slots 266; refer to the attached Fig.15 A plug connector 267 electrically connected to the plurality of coil slots 266 is provided on the side of the circuit connection board 26 facing away from the end plate 23. Multiple pads are connected to the plug connector 267 through wires, and finally electrically connected to the circuit board 3 through the plug connector 267, so that the circuit board 3 controls and distributes the current to the coil group.

[0114] In the present embodiment, a soldering pad is provided for soldering to each head end connection end 2221 and tail end connection end 2222, and the soldering pad is configured in the form of a coil slot 266. After the head end connection end 2221 and the tail end connection end 2222 pass through the through slot 265, all the head end connection ends 2221 and the tail end connection ends 2222 are inserted into the corresponding coil slots 266, so that during the welding operation, the head end connection end 2221 and the tail end connection end 2222 are relatively fixed in position with the soldering pad, and there is no need for the assembler to free up one hand to fix the head end connection end 2221 and the tail end connection end 2222, thereby simplifying the processing difficulty and improving the processing efficiency and the yield rate. In addition, by providing the plug connector 267, the electrical connection between the circuit connection board 26 and the circuit board 3 is greatly simplified. In a specific embodiment, the electrical connection structure is a plug-in mating head provided on the support component 1, such as the end face of the second substrate 113. The plug-in mating head is electrically connected to the circuit board 32. The plug connector 267 and the plug-in mating head can be plugs or sockets that can realize electrical connection.

[0115] Reference Fig.18 In one embodiment, the fixing frame further includes a plugging plate 27 engaged with the through slot 265; after the end of the coil 222 is engaged with the coil slot 266, the plugging plate 27 is engaged with the through slot 265. In this embodiment, the plugging plate 27 is used to plug the through slot 265 so that the coil slot 266 forms a through hole. On the one hand, before the head end connection end 2221 and the tail end connection end 2222 are welded to the coil slot 266, the positions of the head end connection end 2221 and the tail end connection end 2222 can be fixed to simplify the welding operation. On the other hand, the circuit connection board 26, the plugging plate 27, the end plate 23 and the two fixing plates 21 can enclose a second potting cavity 24 for potting epoxy resin 8. The epoxy resin 8 can improve the integrity and structural strength of the electrically excited magnetic field generating assembly 2. In this embodiment, the coil 222 in the stator 22 and the two fixing plates 21 , the circuit connection plate 26 and the end plate 23 all have a second interval, thereby improving the wrapping property of the epoxy resin 8 on the stator 22 .

[0116] During the specific processing, the head end connection end 2221 and the tail end connection end 2222 are first engaged in the corresponding coil slot 266, and then the sealing clamping plate 27 is embedded in the through slot 265, and then the head end connection end 2221 and the tail end connection end 2222 are welded to the corresponding coil slot 266. During welding, the sealing clamping plate 27 and the circuit connection plate 26 can be fixed as a whole, thereby improving the position stability of the head end connection end 2221 and the tail end connection end 2222.

[0117] In one of the embodiments, the circuit connection board 26, the sealing clamping plate 27, the end plate 23 and the two fixing plates 21 enclose a second potting cavity 24, and the second potting cavity 24 is used to pour epoxy resin 8, thereby greatly improving the integrity of the components after assembly, thereby improving the reliability of the linear motor stator module.

[0118] In one of the embodiments, the ends of the two fixing plates 21 facing away from the end plates 23 have a third interval 28 from the circuit connection plate 26. At this time, the parts of the two fixing plates 21 located at the third interval 28 are used to connect with the primary support assembly 1 of the linear motor. In this embodiment, the linear motor stator module and the support assembly 1 are a detachable connection structure. When the linear motor stator module or other primary electrical components (independent of the linear motor stator module, such as the circuit board 3, encoder, control board) are damaged, the damaged equipment can be replaced, thereby solving the current problem that if one component is damaged, the entire linear motor stator module cannot be used, thereby reducing maintenance costs.

[0119] The present invention also provides a specific processing flow of a linear motor stator module, comprising the following steps:

[0120] S1-S5 Reference Attachment Fig.11 -Attached Fig.12 ; S1, wind the coil 222 on the coil skeleton 25, and reserve a certain length for the head and tail ends of the coil 222; S2, sleeve two or more coil skeletons 25 with coils 222 wound on an iron core 221 to form a coil group, and the head ends of two or more coils 222 in a coil group are twisted to form a head end connection end 2221, and the tail ends of two or more coils 222 in a coil group are twisted to form a tail end connection end 2222; S3, repeat S3 to complete the layout of several groups of coil groups and iron cores 221; S4, connect the iron core 221 with the coil group and the iron core 221 without the coil group The iron cores 221 of the groups are alternately arranged on a fixed plate 21, and the two ends of each iron core 221 are engaged with the limiting grooves 213 on the fixed plate 21, and then one end of the end plate 23 is fixedly connected to the fixed plate 21, and then another fixed plate 21 is set up, and the limiting grooves 213 on the other fixed plate 21 are engaged with the other ends of the iron cores 221, and at the same time, another fixed plate 21 is fixedly connected to the other end of the end plate 23; S5, move the head end connection ends 2221 of several coil groups to the same horizontal line, and move the tail end connection ends 2222 of several coil groups to the same horizontal line; S6 refer to the attached Fig.13 -Attached Fig.14; S6, install the circuit connection board 26 between the two fixed plates 21 parallel to the end plate 23, and in the process of moving the circuit connection board 26, make all the head end connection ends 2221 pass through one of the through slots 265, and make all the tail end connection ends 2222 pass through the other through slot 265. After the circuit connection board 26 is installed in place, fix the position of the circuit connection board 26 (the two ends of the circuit connection board 26 can be fixedly connected to the two fixed plates 21 by fasteners); S7 Refer to Attachment Fig.15 -Attached Fig.17 ; S7, the head end connection end 2221 and the tail end connection end 2222 are clamped into the coil slot 266; S8-S9 refer to the attached Fig.18 ; S8, snap the sealing clamping plate 27 into the through groove 265; S9, weld the head end connecting end 2221 and the tail end connecting end 2222 to the coil clamping groove 266; S10, pour epoxy resin into the second potting cavity.

[0121] In one embodiment, the linear motor stator module is a straight segment module, the fixed plate 21 is a straight plate, and the multiple coils 222 in the stator 22 are arranged in a straight array; or, the linear motor stator module is a circular arc segment module, the fixed plate 21 is an arc plate, and the multiple coils 222 in the stator 22 are arranged in an arc array. That is, the present invention is applicable to both straight segment modules and circular arc segment modules.

[0122] In one of the embodiments, sockets 6 are provided at both ends of the support assembly 1. When the two linear motor stator modules are spliced, the relative sockets 6 in the two linear motor stator modules are aligned, and gold fingers are provided in the two sockets 6 to realize electrical connection between each other. In a specific embodiment, a slotted gold finger end cover 15 is provided on the side of the base 11, and the socket 6 is provided on the slotted gold finger end cover 15. In this embodiment, after the end faces of the two linear motor stator modules are aligned, a linear motor stator can be formed, and after alignment, electrical connection between each other is realized through gold fingers. Therefore, the linear motor stator module located in the middle does not need to be connected separately, which greatly simplifies the complexity of docking the linear motor stator modules.

[0123] In one of the embodiments, positioning holes 7 are provided at both ends of the support assembly 1. When the two linear motor stator modules are spliced, the relative positioning holes 7 in the two linear motor stator modules are aligned, and positioning pins are provided in the two positioning holes 7 to achieve mutual positioning. In this embodiment, the alignment efficiency and alignment accuracy of the two linear motor stator modules can be improved.

[0124] The present invention also provides a linear motor stator assembly, which is formed by splicing at least two linear motor stator modules end to end, and two adjacent linear motor stator modules are electrically connected, wherein the linear motor stator modules can be composed entirely of straight segment modules to form a linear motor stator assembly, or can be composed entirely of arc segment modules to form a circular motor stator assembly, or can be composed of some straight segment modules and some arc segment modules to form a custom path.

[0125] The present invention further provides a linear motor assembly, comprising a linear motor stator assembly and a motor mover arranged on the linear motor stator assembly.

[0126] The above is only an embodiment and does not limit the present invention in any way. Any person skilled in the art can use the above disclosed technical contents to make many possible changes, modifications or modifications to the technical solutions of the present invention into equivalent embodiments of equivalent changes without departing from the scope of the technical solutions of the present invention. Therefore, any simple modification, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the scope of protection of the technical solutions of the present invention.

Claims

1. A linear motor stator module, characterized in that: It comprises a supporting component (1), an electrically excited magnetic field generating component (2) and a circuit board (3); The electrically excited magnetic field generating assembly (2) comprises two fixing plates (21) and a stator (22) fixed between the two fixing plates (21), and the same side of the two fixing plates (21) is fixed to the supporting assembly (1); The circuit board (3) is arranged on the support assembly (1), and an electrical connection structure is arranged on a side of the circuit board (3) facing the stator (22), and a plurality of coils (222) in the stator (22) are electrically connected to the electrical connection structure.

2. The linear motor stator module according to claim 1, characterized in that: The electrical connection structure comprises a plurality of groups of connecting parts protruding toward one side of the electrically excited magnetic field generating component (2), and each group of connecting parts is used for electrically connecting to one of the coils (222).

3. The linear motor stator module according to claim 2, characterized in that: The stator (22) and the support assembly (1) have a first spacing (4); One end of the connecting member close to the electrically excited magnetic field generating component (2) extends into the range of the first interval (4).

4. The linear motor stator module according to claim 2 or 3, characterized in that: A group of the connecting parts comprises two connecting blocks (31), and the two connecting blocks (31) are respectively arranged on both sides of one coil (222).

5. The linear motor stator module according to claim 4, characterized in that: A plurality of embedded rods (211) are provided on one side of one of the fixing plates (21) facing the supporting assembly (1), and one embedded rod (211) is embedded between every two connecting blocks (31).

6. The linear motor stator module according to claim 5, characterized in that: The engaging rod (211) and the connecting block (31) are both rectangular structures, trapezoidal structures or triangular structures.

7. The linear motor stator module according to claim 5 or 6, characterized in that: At least a portion of the embedded rods (211) are provided with a fastening matching structure (212), and the fixing plate (21) is fixedly connected to the supporting assembly (1) by providing a fastener (5) on the fastening matching structure (212).

8. The linear motor stator module according to claim 7, characterized in that: The gap between two connecting blocks (31) in one group of connecting members is larger than the gap between two adjacent connecting blocks (31) in two adjacent groups of connecting members; The engaging rod (211) comprises a wide rod and a narrow rod arranged at intervals, the wide rod being arranged between the gaps of two connecting blocks (31) in one group of connecting members, and the narrow rod being arranged between the gaps of two adjacent connecting blocks (31) in two adjacent groups of connecting members; The fastening fitting structure (212) is arranged on the wide rod.

9. The linear motor stator module according to claim 8, characterized in that: The support assembly (1) comprises a base (11) and a first end cover (12); The connecting block (31) and the embedding rod (211) are mounted on the base (11), and the first end cover (12) is mounted on the connecting block (31) and the embedding rod (211); The fastener (5) fastens the first end cover (12), the engaging rod (211) and the base (11); The thickness of the circuit board (3) is thicker than the thickness of the fixing plate (21); The base (11) comprises a first base plate (111), a connecting plate (112) and a second base plate (113) which are connected in sequence; The first substrate (111) and the second substrate (113) are parallel to each other, and the connecting block (31) and the engaging rod (211) are arranged on one side of the second substrate (113); An embedding groove (1111) is provided on the side of the first substrate (111), and the side of the circuit board (3) facing away from the electrically excited magnetic field generating component (2) is embedded in the embedding groove (1111); The first end cover (12) is connected to the first substrate (111) via a fastener (5) on a side facing away from the electrically excited magnetic field generating assembly (2); A first potting cavity (13) is formed between the first end cover (12), the first substrate (111), the connecting plate (112) and the second substrate (113), and the first potting cavity (13) is used for potting epoxy resin (8); The support assembly (1) further comprises a second end cover (14) arranged on a side of the first substrate (111) and the second substrate (113) away from the first end cover (12); A component installation cavity (16) is formed between the second end cover (14), the first substrate (111), the connecting plate (112) and the second substrate (113), and the component installation cavity (16) is used for installing components; Another fixing plate (21) is mounted on the other side of the second base plate (113), the second end cover (14) is mounted on the fixing plate (21), and the second end cover (14), the fixing plate (21) and the second base plate (113) are fixedly connected by a fastener (5); The second end cover (14) is an encoder printed circuit board.

10. The linear motor stator module according to any one of claims 1-3, 5-6, 8-9, characterized in that: The stator (22) comprises a plurality of iron cores (221) arranged at intervals and coils (222) arranged on an even number of the iron cores (221); Two ends of each coil (222) are electrically connected to the circuit board (3); Limiting grooves (213) are correspondingly arranged on the two fixing plates (21), and the iron core (221) is embedded in the two corresponding limiting grooves (213); The electrically excited magnetic field generating assembly (2) further comprises an end plate (23); The end plate (23) is arranged on a side of the two fixing plates (21) away from the support assembly (1), and the end plate (23) is fixedly connected to the two fixing plates (21).

11. The linear motor stator module according to claim 10, characterized in that: The electrically excited magnetic field generating component (2) further comprises a circuit connection board (26), wherein the circuit connection board (26) is arranged corresponding to the end plate (23), the coil (222) is electrically connected to the circuit connection board (26), and the circuit connection board (26) is electrically connected to the electrical connection structure.

12. The linear motor stator module according to claim 11, characterized in that: The circuit connection plate (26) is provided with two rows of through slots (265), the slot width of the through slots (265) being greater than the diameter of the coil (222) after winding, and the ends of the coil (222) are arranged through the through slots (265).

13. The linear motor stator module according to claim 12, characterized in that: The circuit connection plate (26) is divided into an upper connection plate (261), an intermediate electrical connection plate (262) and a lower connection plate (263) by the two through slots (265); longitudinal line connection plates (264) are further provided at both ends of the upper connection plate (261), the intermediate electrical connection plate (262) and the lower connection plate (263); Coil slots (266) are provided at both ends of the middle electrical connection plate (262), and the ends of the coil (222) are welded to the coil slots (266); A plug connector (267) electrically connected to a plurality of coil slots (266) is provided on the side of the circuit connection board (26) facing away from the end plate (23), and the electrical connection structure is a plug-in mating head provided on the support assembly (1).

14. The linear motor stator module according to claim 13, characterized in that: The electrically excited magnetic field generating assembly (2) further comprises a blocking clamping plate (27) engaged with the through slot (265); After the end of the coil (222) is engaged with the coil clamping groove (266), the blocking clamping plate (27) is engaged with the through groove (265).

15. The linear motor stator module according to claim 14, characterized in that: The circuit connection plate (26), the blocking clamping plate (27), the end plate (23) and the two fixing plates (21) enclose a second potting cavity (24), and the second potting cavity is used for potting epoxy resin (8).

16. The linear motor stator module according to any one of claims 11 to 15, characterized in that: One end of the two fixing plates (21) facing away from the end plate (23) has a third interval (28) from the circuit connection plate (26).

17. The linear motor stator module according to any one of claims 11 to 15, characterized in that: At least two coils (222) are coaxially arranged in parallel on one of the iron cores (221), and the two coils (222) are connected in parallel.

18. The linear motor stator module according to any one of claims 11 to 15, characterized in that: The linear motor stator module is a straight segment module, the fixed plate (21) is a straight plate, and the plurality of coils (222) in the stator (22) are arranged in a straight array; Alternatively, the linear motor stator module is a circular arc segment module, the fixing plate (21) is an arc-shaped plate, and the plurality of coils (222) in the stator (22) are arranged in an arc array.

19. The linear motor stator module according to any one of claims 11 to 15, characterized in that: Sockets (6) are provided at both ends of the support assembly (1); when the two linear motor stator modules are spliced, the sockets (6) facing each other in the two linear motor stator modules are aligned, and gold fingers are provided in the two sockets (6) to realize electrical connection between them; Positioning holes (7) are provided at both ends of the support assembly (1); when the two linear motor stator modules are spliced, the relative positioning holes (7) in the two linear motor stator modules are aligned, and positioning pins are provided in the two positioning holes (7) to achieve mutual positioning.

20. A linear motor stator assembly, characterized in that: It is formed by splicing at least two linear motor stator modules as described in any one of claims 1 to 19 end to end, and two adjacent linear motor stator modules are electrically connected.

21. A linear motor assembly, characterized in that: It comprises the linear motor stator assembly as claimed in claim 20 and a motor mover arranged on the linear motor stator assembly.

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