Linear motor and assembly line

Abstract

The utility model belongs to transmission equipment technical field discloses a kind of linear motor and assembly line, the linear motor includes first pedestal, mover module and first stator module;Mover module is movably arranged on first pedestal along first direction;Multiple first stator modules are distributed on first pedestal along first direction and with first pedestal detachably connected, and first stator module is used to generate the magnetic force of pushing mover module;First position monitoring module includes grating and first position feedback plate, grating is arranged on mover module, multiple first position feedback plates are fixedly arranged on first pedestal and are set up one-to-one with first stator module, two encoders are set up on first position feedback plate along first direction interval, and encoder can read the data on grating, the distance between any two adjacent encoders is less than the length of grating.The above-mentioned linear motor and the assembly line comprising the linear motor, maintenance cost is low, and applicability is strong.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission equipment technical field especially relates to a linear motor and assembly line. BACKGROUND

[0002] Linear motor is a kind of transmission device that directly converts electric energy into linear motion mechanical energy without any intermediate conversion mechanism.The length of the existing linear motor is certain,when being applied to the assembly line in different occasions,linear motor's length needs to be customized according to the space where the assembly line is,which leads to the poor applicability of linear motor,moreover,once linear motor fails,whole linear motor needs to be replaced,so maintenance cost increases. SUMMARY

[0003] The utility model discloses a linear motor, to solve the problem of poor applicability of linear motor, high maintenance cost.

[0004] To achieve this purpose, the utility model adopts the following technical scheme:

[0005] First, the utility model provides a kind of linear motor, linear motor includes first pedestal, mobile module and first stator module;The mobile module is movably arranged on the first pedestal along the first direction;Multiple first stator modules are distributed on the first pedestal along the first direction and are detachably connected with the first pedestal, and the first stator module is used to generate the magnetic force that pushes the mobile module;The first position monitoring module includes grating ruler and first position feedback plate, the grating ruler is arranged on the mobile module, multiple first position feedback plates are fixedly arranged on the first pedestal and are arranged one by one with the first stator module, and two encoders are arranged on the first position feedback plate along the first direction interval, the encoder can read the data on the grating ruler, and the distance between any two adjacent encoders is less than the length of the grating ruler.

[0006] Optionally, the first stator module includes coil and mounting plate, the coil is fixed to one side of the first pedestal by the mounting plate, the first position feedback plate is fixed to the other side of the first pedestal, the mobile module includes moving base and permanent magnet, the moving base is movably arranged on the first pedestal along the first direction, the permanent magnet is fixed to the side of the moving base facing the coil, and the grating ruler is arranged on the side of the moving base opposite to the first position feedback plate.

[0007] Optionally, the length of the first stator module along the first direction is the same as the length of the first position feedback plate along the first direction.

[0008] Optionally, the linear motor further comprises a guiding module, the guiding module comprises a slide rail and a roller set, the slide rail is fixedly arranged on the top of the first base, and the roller set is installed on the moving base and in rolling contact with the slide rail.

[0009] Optionally, the roller set comprises a first roller and a second roller symmetrically arranged along a second direction, the first roller and the second roller cooperate to clamp the slide rail, and the second direction is perpendicular to the first direction.

[0010] Optionally, the first roller and the second roller are both V-shaped rollers, opposite sides of the slide rail facing the first roller and the second roller are respectively provided with limiting strips, and the limiting strips are inserted into V-shaped grooves of the V-shaped rollers.

[0011] In a second aspect, the utility model also proposes a flow line, the flow line comprises first linear transmission device and second linear transmission device, the first linear transmission device adopts the above linear motor, at least two first linear transmission devices are arranged along a second direction, the second linear transmission device is arranged perpendicularly on one end of the first linear transmission device, the second linear transmission device comprises linear drive part, second base, second stator module and second position feedback plate, the second base is arranged on the linear drive part, the second stator module and the second position feedback plate are both arranged on the second base, the second stator module can drive the first stator module to move along the first direction on the second base, the second position feedback plate can read the data on the grating ruler, the linear drive part is configured to drive the second base to move along the second direction, so that the second base is on the same straight line with the first base, the mover module can be transferred between the first base and the second base, and the second direction is perpendicular to the first direction.

[0012] Optionally, the second linear transmission device is also provided with two, and the two second linear transmission devices are arranged at opposite ends of the first linear transmission device along the first direction.

[0013] Optionally, the flow line further comprises a plurality of pads, and the plurality of pads are arranged at the bottom of the first base along the first direction to make the first base and the second base at the same height.

[0014] Optionally, the second linear transmission device further comprises a second position monitoring module, the second position monitoring module comprises a trigger arranged on the second base and a photoelectric sensor arranged on the linear drive part, and when the second base is on the same straight line with the first base, the photoelectric sensor is triggered.

[0015] The utility model discloses beneficial effect: the utility model discloses linear motor and including the connection line of this linear motor adopt modularization setting, when facing different working condition can according to actual demand to the number of first stator module and the first position feedback board corresponding to first stator module are reduced. When linear motor breaks down, can only replace the first stator module of breakdown, and need not replace the whole linear motor, reduce the maintenance cost of linear motor. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the three -dimensional structure schematic diagram of linear motor in the utility model embodiment;

[0017] Figure 2 It is the side view of linear motor in the utility model embodiment;

[0018] Figure 3 It is the structure schematic diagram of mover module in the utility model embodiment;

[0019] Figure 4 It is the three -dimensional structure schematic diagram of assembly line in the utility model embodiment;

[0020] Figure 5 It is the plan view of assembly line in the utility model embodiment.

[0021] In the drawing:

[0022] 10, linear motor;11, first base;12, mover module;121, permanent magnet;122, mobile base;13, first stator module;14, first position monitoring module;141, first position feedback board;142, grating;15, guide module;151, slide rail;152, roller group;

[0023] 20, second linear transmission device;21, second stator module;22, second base;23, second position feedback board;24, second position monitoring module;241, trigger;242, photoelectric sensor;25, linear drive;

[0024] 30, cushion block. DETAILED DESCRIPTION

[0025] The utility model makes further detailed explanation in combination with the drawings and embodiment. It can be understood that the specific embodiment described here is only used for explaining the utility model, and is not the limitation to the utility model. In addition, it needs to be explained that in order to facilitate the description, only the part relevant to the utility model is shown in the drawing but not all structures.

[0026] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two element internal communication or two element mutual action relation.For ordinary skilled in the art, the above-mentioned terms can be understood in the utility model according to the specific meaning of the specific circumstances.

[0027] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features is not direct contact but is through the contact between other features between them.And, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the first feature horizontal height is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the first feature horizontal height is less than the second feature.

[0028] In the description of the embodiment, the terms "on", "under", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and not indicate or imply the device or element referred to must have a particular orientation, with a particular orientation structure and operation, therefore cannot be understood as the limitation of the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0029] Reference Figures 1-3 As shown in the figure, the embodiment proposes a kind of linear motor 10, including first base 11, mover module 12, first stator module 13 and first position monitoring module 14, mover module 12 is along first direction (X) Figure 1The first stator module 13 is arranged on the first base 11, and the first position monitoring module 14 comprises a grating ruler 142 and a first position feedback plate 141. The grating ruler 142 is arranged on the mover module 12 and moves together with the mover module 12. The first position feedback plate 141 is fixedly arranged on the first base 11 and corresponds to each first stator module 13. The first position feedback plate 141 is electrically connected to an external controller through a cable. Two encoders are arranged on each first position feedback plate 141 and are spaced apart along the first direction. The encoders can read data on the grating ruler 142 to monitor the moving position of the mover module 12. It should be noted that the distance between any two adjacent encoders in the linear motor 10 is less than the length of the grating ruler 142 along the first direction, so that the data on the grating ruler 142 can be read by the encoders at any time. The external controller can adjust the speed and current of the linear motor according to the obtained grating ruler 142 data. It can be understood that the mover module 12 can be arranged in one or multiple, which is not limited here. When the mover module 12 is arranged in multiple, each mover module 12 can be controlled individually because the first position feedback plate 141 is arranged in one-to-one correspondence with the first stator module 13.

[0030] The above linear motor is modularly arranged. By arranging multiple first stator modules 13, the number of first stator modules 13 and the corresponding first position feedback plates 141 can be reduced according to actual needs when facing different working conditions. When the linear motor 10 fails, only the failed first stator module 13 needs to be replaced, without the need to replace the entire linear motor 10, thereby reducing the maintenance cost of the linear motor 10. In addition, the first position feedback plate 141 is arranged on the first base 11, and the grating ruler 142 is arranged on the mover module 12. The cable for connecting the first position feedback plate 141 and the external controller is stationary, without the need to provide a drag chain to pull and protect the cable, and the entire linear motor 10 is simple in structure. It can be understood that the first base 11 can be arranged in segments or integrally, which is not limited in the embodiment and can be determined according to the number of selected first stator modules 13 and first position feedback plates 141.

[0031] Specifically, the first stator module 13 includes a coil and a mounting plate. The coil is fixed to one side of the first base 11 via the mounting plate, while the first position feedback plate 141 is fixed to the other side of the first base 11. The mounting plate is detachably fixed to the first base 11 using methods including but not limited to bolt connections and snap-fit ​​connections. Either coil can be connected to an external power source to generate a magnetic force that drives the moving sub-module 12 when energized. The moving sub-module 12 includes a movable base 122 and a permanent magnet 121. The movable base 122 is L-shaped and is movably disposed on the first base 11 along a first direction. The permanent magnet 121 is fixed to the side of the movable base 122 facing the coil, and the grating ruler 142 is disposed on the side of the movable base 122 opposite to the first position feedback plate 141.

[0032] More specifically, the length of the first stator module 13 along the first direction is the same as the length of the first position feedback plate 141 along the first direction, thereby reducing installation difficulty. During linear motor assembly, adjacent first stator modules 13 and adjacent first position feedback plates 141 abut against each other.

[0033] refer to Figure 2 and Figure 3 As shown, in order to guide the movement of the movable base 122 on the first base 11, the linear motor also includes a guide module 15. The guide module 15 includes a slide rail 151 and a roller assembly 152. The slide rail 151 is fixedly disposed on the top of the first base 11, and the roller assembly 152 is mounted on the movable base 122 and rolls in contact with the slide rail 151.

[0034] Specifically, the roller assembly 152 includes rollers along the second direction ( Figure 1 The first and second rollers are symmetrically arranged at intervals along the Y-axis. These rollers cooperate to clamp and roll along the slide rail 151, further improving the stability of the moving base 122 as it moves on the slide rail 151. Clearly, compared to using two slide rails 151 to improve the smoothness of the moving base 122's operation, the arrangement of the first and second rollers saves more space. The second direction is perpendicular to the first direction.

[0035] In this embodiment, there are two of each of the first roller and the second roller, and the two first rollers and the two second rollers are distributed at intervals along the first direction.

[0036] More specifically, both the first roller and the second roller are V-shaped rollers. The slide rail 151 is provided with limit strips on the opposite sides of the first roller and the second roller. The limit strips are inserted into the V-groove of the V-shaped roller and are set in accordance with the shape of the V-groove to realize the upper and lower limit of the first roller and the second roller.

[0037] refer to Figures 4-5As shown, the embodiment also proposes a pipeline, which comprises the first linear transmission devices and the second linear transmission device 20. The first linear transmission device is the linear motor 10 described above, and at least two first linear transmission devices are arranged along the second direction. The second linear transmission device 20 is arranged perpendicularly at one end of the first linear transmission device, and its transmission stroke is not less than the distance between the adjacent two first linear transmission devices. The second linear transmission device 20 comprises a linear driving member 25, a second base 22, a second stator module 21 and a second position feedback plate 23. The second base 22 is arranged on the linear driving member 25, and the second stator module 21 and the second position feedback plate 23 are arranged on the second base 22. The second stator module 21 has the same structure as the first stator module 13, and the second position feedback plate 23 has the same structure as the first position feedback plate 141. The linear driving member 25 is configured to drive the second base 22 to move along the second direction, for example, a linear module is used, so that the second base 22 can be on the same straight line as the first base 11. At this time, the mover module 12 in the first linear transmission device can be transferred to the second base 22 or from the second base 22 to the first base 11, so as to realize the transfer of the workpiece between the two first linear transmission devices by using the second linear transmission device 20.

[0038] It can be understood that when the first base 11 and the second base 22 are on the same straight line, the joint width between the two does not affect the transfer of the mover module from the first base 11 to the second base 22.

[0039] Specifically, the second linear transmission device 20 can also be arranged in two, and the two second linear transmission devices 20 are arranged at the opposite ends of the first linear transmission device along the first direction, so as to form a ring-shaped pipeline. It can be understood that since the first position feedback plate 141 is arranged on the first base 11 and the second position feedback plate 23 is arranged on the second base 22, the cable connected with the first position feedback plate 141 and the second position feedback plate 23 will not affect the track change of the mover module 12 (the transfer between the first base 11 and the second base 22).

[0040] In view of the height of the linear driving member 25, in order to save the material of the first base 11 while keeping the same height of the first base 11 and the second base 22, the pipeline further comprises a plurality of pads 30, which are arranged at the bottom of the first base 11 along the first direction.

[0041] Reference Figure 5As shown, the second linear transmission device 20 further comprises a second position monitoring module 24, which comprises a trigger 241 arranged on the second base 22 and a photoelectric sensor 242 arranged on the linear driving member 25. When the second base 22 is in the same straight line with the first base 11, the photoelectric sensor 242 is triggered by the trigger 241, and the structure of the photoelectric sensor 242 and the principle of being triggered both belong to the prior art, which will not be described here.

[0042] Specifically, in order to avoid the interference between the trigger 241 and the first linear transmission device, the trigger 241 is arranged on the side of the second base 22 away from the first linear transmission device.

[0043] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. Linear motor, characterized in that The linear motor comprises: a first base (11); a mover module (12) movably arranged on the first base (11) along a first direction; a plurality of first stator modules (13) distributed on the first base (11) along the first direction and detachably connected with the first base (11), the first stator modules (13) being used for generating magnetic force to push the mover module (12); a first position monitoring module (14) comprising a grating ruler (142) arranged on the mover module (12) and a plurality of first position feedback plates (141) fixedly arranged on the first base (11) and corresponding to the first stator modules (13) one by one, each of the first position feedback plates (141) being provided with two encoders arranged at intervals along the first direction, the encoders being capable of reading data on the grating ruler (142), and the distance between any two adjacent encoders being less than the length of the grating ruler (142).

2. The linear motor of claim 1, wherein The first stator module (13) comprises a coil and a mounting plate, the coil being fixed to one side of the first base (11) through the mounting plate, the first position feedback plate (141) being fixed to the other side of the first base (11), the mover module (12) comprising a moving base (122) movably arranged on the first base (11) along the first direction and a permanent magnet (121) fixed to the side of the moving base (122) facing the coil, and the grating ruler (142) being arranged on the side of the moving base (122) opposite to the first position feedback plate (141).

3. The linear motor of claim 2, wherein, The length of the first stator module (13) along the first direction is the same as the length of the first position feedback plate (141) along the first direction.

4. The linear motor of claim 2, wherein The linear motor further comprises a guiding module (15) comprising a slide rail (151) fixedly arranged on the top of the first base (11) and a roller set (152) installed on the moving base (122) and in rolling contact with the slide rail (151).

5. The linear motor of claim 4, wherein, The roller set (152) comprises a first roller and a second roller symmetrically arranged at intervals along a second direction, the first roller and the second roller cooperating to clamp the slide rail (151), and the second direction being perpendicular to the first direction.

6. The linear motor of claim 5, wherein, Both the first roller and the second roller are V-shaped rollers, and the slide rail (151) is provided with a limiting strip on each of the opposite sides facing the first roller and the second roller, respectively, the limiting strip being inserted into the V-shaped groove of the V-shaped roller.

7. A pipeline characterized by, The pipeline comprises a first linear transmission device and a second linear transmission device (20), the first linear transmission device adopts the linear motor as claimed in any one of claims 1-6, and at least two of the first linear transmission devices are arranged along a second direction, the second linear transmission device (20) is arranged perpendicularly at one end of the first linear transmission device, the second linear transmission device (20) comprises a linear driving member (25), a second base (22), a second stator module (21) and a second position feedback plate (23), the second base (22) is arranged on the linear driving member (25), the second stator module (21) and the second position feedback plate (23) are arranged on the second base (22), the second stator module (21) can drive the first stator module (13) to move along the first direction on the second base (22), the second position feedback plate (23) can read data on the grating ruler (142), the linear driving member (25) is configured to drive the second base (22) to move along the second direction, so that the second base (22) is in the same straight line with the first base (11), the mover module (12) can be transferred between the first base (11) and the second base (22), and the second direction is perpendicular to the first direction.

8. The pipeline of claim 7, wherein, The second linear transmission device (20) is also arranged in two, and the two second linear transmission devices (20) are arranged at opposite ends of the first linear transmission device along the first direction.

9. The pipeline of claim 7, wherein, The pipeline further comprises a plurality of pads (30), and the plurality of pads (30) are arranged at the bottom of the first base (11) along the first direction, so that the first base (11) and the second base (22) are at the same height.

10. The pipeline of claim 7, wherein, The second linear transmission device (20) further comprises a second position monitoring module (24), the second position monitoring module (24) comprises a trigger (241) arranged on the second base (22) and a photoelectric sensor (242) arranged on the linear driving member (25), when the second base (22) is in the same straight line with the first base (11), the photoelectric sensor (242) can be triggered by the trigger (241).

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