CN113014059B

CN113014059B - Linear motor rotor and linear motor module

Info

Publication number: CN113014059B
Application number: CN202110174744.5A
Authority: CN
Inventors: 陈钧; 刘欢
Original assignee: Shanghai Orient Drive Co ltd
Current assignee: Shanghai Orient Drive Co ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2022-05-13
Anticipated expiration: 2041-02-07
Also published as: CN113014059A

Abstract

The application discloses a linear motor rotor and a linear motor module, which comprise an installation support and a coil assembly arranged on the installation support, wherein the coil assembly comprises a first coil and a second coil, the first coil and the second coil are both in rectangular frame structures, and hollow core grooves are formed in the middle parts of the first coil and the second coil; two ends of the first coil and the second coil are bent to form avoiding parts, the two avoiding parts of the first coil and the two avoiding parts of the second coil are bent towards the open side of the corresponding hollow core slot, embedding parts are formed between the two avoiding parts of the first coil and between the two avoiding parts of the second coil, and the width of the hollow core slot is not less than the sum of the widths of the two embedding parts; the first coil and the second coil are both provided with a plurality of coils, the first coil and the second coil are sequentially arranged adjacently, and the embedded parts of the adjacent first coil and the second coil are respectively embedded into the air slots of the opposite side. This application has the effect that helps increasing linear electric motor thrust.

Description

Linear motor rotor and linear motor module

Technical Field

The application relates to the field of motors, in particular to a linear motor rotor and a linear motor module.

Background

A linear motor is also called a linear motor, etc., and is a transmission device that directly converts electric energy into mechanical energy for linear motion without any intermediate conversion mechanism.

In the related art, the linear motor rotor comprises an installation support, a coil and an encapsulating colloid, under the common condition, the coil is sequentially tiled, glue is poured among the coil, the coil and the installation support through a mold, the encapsulating colloid is formed, and therefore the coil assembly is packaged and is installed on the installation support.

In view of the above-mentioned related art, the inventors consider that there is a drawback that the thrust of the linear motor is small.

Disclosure of Invention

In order to improve the situation that the thrust of the linear motor in the related art is small, the application provides a linear motor rotor and a linear motor module.

In a first aspect, the present application provides a linear motor mover, which adopts the following technical scheme:

a linear motor rotor comprises an installation support and a coil assembly arranged on the installation support, wherein the coil assembly comprises a first coil and a second coil, the first coil and the second coil are both in rectangular frame structures, and hollow core grooves are formed in the middle parts of the first coil and the second coil;

two ends of the first coil and two ends of the second coil are bent to form avoiding parts, the two avoiding parts of the first coil and the two avoiding parts of the second coil are bent towards the open side of the corresponding hollow core slot, embedding parts are formed between the two avoiding parts of the first coil and between the two avoiding parts of the second coil, and the width of the hollow core slot is not less than the sum of the widths of the two embedding parts;

the first coil and the second coil are both provided with a plurality of coils, the first coil and the second coil are sequentially arranged adjacently, and the embedded parts of the adjacent first coil and the second coil are embedded into the air slots of the other side respectively.

By adopting the technical scheme, the embedded parts of the adjacent first coil and the second coil are respectively embedded into the air-core slots of the other side, and under the limit of the same length of the coil groups, the coil groups installed in the mode have higher density and larger magnetic flux, so that the thrust of the linear motor is increased.

Preferably, the linear motor rotor further comprises potting adhesive, the potting adhesive encapsulates the coil assembly, two hollow grooves at two ends of the coil assembly are partially vacant, and the potting adhesive is formed with reinforcing bodies in the two partially vacant hollow grooves of the coil assembly.

By adopting the technical scheme, the coil assembly is encapsulated by the pouring sealant, the coil assembly is fixed, and meanwhile, the reinforcing bodies formed in the hollow grooves of the two parts of the coil assembly are vacant, so that the pouring sealant can be reinforced, and the stability of the coil assembly is improved.

Preferably, the two side faces in the thickness direction of the pouring sealant body are provided with insulating plates.

Through adopting above-mentioned technical scheme, set up the insulation board in the both sides of filling colloid, further protect coil assembly, reduce the condition that other structures touched coil assembly short circuit and take place.

The second aspect, this application provides a linear electric motor module, adopts following technical scheme:

the utility model provides a linear electric motor module, includes the linear electric motor active cell, still includes the base, is fixed in the stator on the base and slides and set up the thing platform of putting on the base, the installing support of active cell is fixed in puts the thing bench, be formed with the caulking groove on the stator, the coil assembly embedding caulking groove of linear electric motor active cell.

Through adopting above-mentioned technical scheme, on the linear electric motor active cell application linear electric motor module with the intensive setting of coil group coil, help promoting the carrying capacity of linear electric motor module.

Preferably, the base is all fixed being provided with the fixed bolster at the both sides edge of putting the thing platform slip direction, two the fixed bolster all with put all the cooperation between the thing platform and be provided with and be used for cushioning and will put the buffering locking mechanical system on the base of thing platform locking to putting the thing platform impact force.

Through adopting above-mentioned technical scheme, linear electric motor itself converts electric power into magnetic field, and then realizes linear motion, does not pass through mechanical structure's transmission conversion in the middle of, and it possesses the advantage that the reaction is rapid, the precision is high. However, in order to ensure the efficiency of the operation of the linear motor, the friction force of the sliding structure between the object placing table and the base is relatively small. If the linear motor module is in the operation process, particularly when the object placing table carries a heavy object to act, the linear motor is in a fault shutdown or power failure state, at the moment, the object placing table carrying the heavy object has great inertia and is easy to impact a base or other objects, and the linear motor module is damaged;

with the help of setting up the buffering locking mechanical system on the base, under the linear electric motor fault shutdown or outage circumstances, put the thing platform and slide to arbitrary fixed bolster direction, under buffering locking mechanical system's assistance, will stop gradually to by the locking, thereby reduce the condition that puts the thing platform and strike base or other objects and take place, help guaranteeing the security of linear electric motor module and carried object.

Preferably, the buffer locking mechanism comprises an insertion pipe, an insertion rod, a first elastic piece and a movable sleeve, the insertion pipe is fixed on the fixed support, the axis of the insertion pipe is parallel to the sliding direction of the object placing table, the insertion rod is fixed on the object placing table, the insertion rod faces the insertion pipe and is coaxial with the insertion pipe, and the insertion rod is in insertion fit with the insertion pipe;

the utility model discloses a socket, including fixed bolster, swivel nut, camera.

By adopting the technical scheme, when the linear motor is stopped due to a fault or is powered off, the object placing table moves towards the fixed support, the inserting rod penetrates into the inserting pipe and extrudes the intercepting ball under the guidance of the spherical surface of the intercepting ball; at the moment, the intercepting ball extrudes the guide inclined plane of the movable sleeve, the movable sleeve moves towards one side of the fixed support and compresses the first elastic piece, and therefore the inserting connecting rod and the object placing table are buffered in the first step;

then, the inserting rod continues to move towards the fixed support, the first elastic piece stretches under the avoidance of the clamping groove, the movable sleeve moves towards one side away from the fixed support, and the intercepting ball is extruded, so that the intercepting ball is inserted into the inserting pipe and clamped into the clamping groove; at the moment, the interception ball intercepts the insertion connection rod and the object placing table;

and then, the inserting rod continues to move towards the fixed support, the intercepting ball is extruded by the inserting rod again under the guidance of the spherical surface of the intercepting ball, the first elastic piece is compressed again, and the inserting rod and the object placing table are buffered for the second step. And then, the clamping grooves are sequentially matched with the clamping grooves, and the insertion connecting rod and the object placing table are buffered for multiple times. After the object placing table stops, the movable sleeve is extruded by the first elastic piece, the guide inclined plane of the movable sleeve extrudes the intercepting ball, and the intercepting ball is stably embedded into the clamping groove in the inserting rod, so that the inserting rod and the object placing table are locked. Through this kind of mode, realize reducing to put the thing platform and strike base and other objects and the condition emergence of damage to putting thing platform to the locking of putting the thing platform is realized, the thing platform secondary motion is put in the reduction and the condition emergence of striking base and other objects is reduced.

Meanwhile, the blocking ball can block the movable sleeve from separating from the insertion rod.

Preferably, the one end that the movable sleeve deviates from first elastic component is provided with the helmet, the helmet cover is established the one end that the movable sleeve deviates from first elastic component and can be dismantled fixedly with the movable sleeve, just the coaxial helmet that runs through of grafting pipe and with the cooperation of helmet sliding.

By adopting the technical scheme, on one hand, the intercepting ball is limited between the guide inclined plane and the protective cap, so that the situation that the intercepting ball is separated from the embedded groove when the first elastic part is excessively compressed and the movable sleeve excessively moves is reduced, and the normal operation of the buffering locking mechanism is favorably ensured;

on the other hand, the protective cap reduces the condition that external sundries enter between the guide inclined plane and the intercepting ball, and further ensures the normal operation of the buffering locking mechanism.

Preferably, the insertion rod is provided with a second elastic piece; when the inserting rod penetrates into the inserting pipe, two ends of the second elastic piece respectively support the object placing table and the movable sleeve tightly.

Through adopting above-mentioned technical scheme, do the buffering operation of step one another by second elastic component opposition thing platform, further reduce to put the thing platform and strike base and other objects and the condition of damage takes place.

Preferably, a pull rod is fixedly arranged on the movable sleeve, the axis of the pull rod is parallel to the axis of the movable sleeve, the pull rod extends towards the fixed support and penetrates through the fixed support, and the pull rod is connected with the fixed support in a sliding manner.

By adopting the technical scheme, on one hand, when the plug rod is difficult to be separated from the plug pipe, a worker can pull the pull rod to enable the movable sleeve to compress the first elastic piece and enable the guide inclined surface of the movable sleeve to release the intercepting ball, so that the follow-up normal operation of the linear motor module is ensured;

on the other hand, the pull rod is matched with the fixed support in a sliding mode, and the stability of the movable sleeve is improved.

Preferably, one end of the second elastic element, which is close to the movable sleeve, is fixedly provided with a buffer pad.

By adopting the technical scheme, the buffer pad serves as a buffer between the second elastic piece and the movable sleeve, and the situation that the second elastic piece and the movable sleeve are damaged is reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

the embedded parts of the adjacent first coil and the second coil are respectively embedded into the hollow core slots of the other coil, so that the thrust of the linear motor is increased;

the impact force of the object placing table is buffered by the aid of the buffering locking mechanism, the object placing table is locked on the base, and the second elastic piece performs another part of buffering operation, so that the object placing table is buffered for many times, the damage caused by the impact of the object placing table on the base and other objects is reduced, the object placing table is locked, and the impact caused by the secondary motion of the object placing table on the base and other objects is reduced;

comprehensive utilization sets up the helmet on the movable sleeve to and fixed connection just slides and connect in the pull rod of fixed bolster in the movable sleeve, thereby greatly promote the stability of movable sleeve.

Drawings

Fig. 1 is a schematic view of an axis measurement of the overall structure of the linear motor module according to the present embodiment;

fig. 2 is an exploded schematic view mainly showing the structure of the linear motor in the present embodiment;

FIG. 3 is a schematic diagram of an arrangement structure of coil sets according to the present embodiment;

fig. 4 is a schematic diagram mainly showing the structure of the first coil and the second coil in the present embodiment;

fig. 5 is a schematic full-sectional view mainly showing a mover structure in this embodiment;

FIG. 6 is a partial schematic view of the present embodiment mainly showing the structure of the cushion lock mechanism;

FIG. 7 is a schematic full-sectional view of the buffering locking mechanism in the embodiment mainly showing the insertion rod penetrating into the insertion tube;

fig. 8 is an enlarged view of a portion a of fig. 7, mainly embodying the structure of the insertion groove and the escape groove.

Reference numerals: 1. a base; 11. fixing a bracket; 12. a slide rail; 2. a placing table; 21. a slider; 3. a linear motor; 4. a mover; 41. mounting a bracket; 42. encapsulating the colloid; 421. a reinforcement body; 422. an insulating plate; 43. a coil assembly; 431. a first coil; 432. a second coil; 433. a hollow core groove; 434. an avoidance part; 435. an insertion section; 5. a stator; 51. a base body; 511. caulking grooves; 52. a magnet; 6. a buffer locking mechanism; 61. inserting a pipe; 611. a groove is embedded; 612. an avoidance groove; 62. a plug rod; 621. a clamping groove; 622. a second elastic member; 6221. a cushion pad; 63. a first elastic member; 64. a movable sleeve; 641. a guide ramp; 642. a protective cap; 65. intercepting the ball; 7. a pull rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses linear motor module.

Example (b):

referring to fig. 1 and 2, the linear motor module includes base 1 and slides and set up the thing platform 2 of putting on base 1, still is provided with linear motor 3 on the base 1, and linear motor 3 drives and puts thing platform 2 and slide on base 1, and base 1 all is provided with fixed bolster 11 in the both sides of putting thing platform 2 gliding direction, arbitrary fixed bolster 11 all with put the cooperation between the thing platform 2 and be provided with buffering locking mechanical system 6. When 3 fault shutdown or outage circumstances of linear electric motor put thing platform 2 to arbitrary fixed bolster 11 motion down, buffering locking mechanical system 6 cushions putting 2 impact forces of thing platform and will put thing platform 2 locking on base 1.

Slide rails 12 are fixedly arranged on two sides of the base 1 in the width direction, the slide rails 12 are located on the upper side face of the base 1, and the length direction of the slide rails 12 is parallel to the length direction of the base 1. Put the fixed slider 21 that sets up of downside of thing platform 2, the spout has been seted up to the downside of slider 21, and the local embedding spout of slide rail 12 and the cooperation of sliding with the spout, and slider 21 and slide rail 12 one-to-one.

Referring to fig. 2, the linear motor 3 includes a mover 4 and a stator 5.

The stator 5 includes a seat 51 and a magnet 52, the seat 51 is located between the two slide rails 12 and fixed on the base 1, and the length direction of the seat 51 is parallel to the length direction of the base 1. The base 51 has a slot 511 extending through the base from one side in the longitudinal direction, and the slot 511 extends through one side in the width direction of the base 51. The two groups of magnets 52 are respectively fixed on the upper and lower side walls of the caulking groove 511, the two groups of magnets 52 are arranged at intervals up and down, and the two groups of magnets 52 respectively comprise a plurality of magnets 52 arranged along the length direction of the seat body 51.

Referring to fig. 2 and 3, the mover 4 includes a mounting bracket 41, a potting adhesive 42 formed on the mounting bracket 41, and a coil assembly 43 embedded in the potting adhesive 42. The mounting bracket 41 is positioned between the two sliders 21 and fixed to the lower side surface of the platform 2. The potting adhesive 42 and the coil group 43 pre-embedded in the potting adhesive 42 are embedded between the two groups of magnets 52 and are in clearance fit with the two groups of magnets 52.

Referring to fig. 3 and 4, the coil assembly 43 includes a first coil 431 and a second coil 432, the first coil 431 and the second coil 432 are rectangular frame structures formed by winding copper wires, hollow slots 433 are formed in the first coil 431 and the second coil 432, and insulating paper is wrapped on the outer sides of the first coil 431 and the second coil 432. Both ends of the first coil 431 and the second coil 432 are bent to form avoiding portions 434, two avoiding portions 434 of the first coil 431 and two avoiding portions 434 of the second coil 432 are bent towards the open side of the corresponding hollow groove 433, two embedding portions 435 which are parallel to each other are formed between the two avoiding portions 434 of the first coil 431 and between the two avoiding portions 434 of the second coil 432, and the width of the hollow groove 433 is not smaller than the sum of the widths of the two embedding portions 435. The first coil 431 and the second coil 432 are respectively provided with a plurality of coils, in the coil arrangement, the avoiding parts 434 of any adjacent first coil 431 and second coil 432 are oppositely arranged, and any embedding parts 435 of the first coil 431 and the second coil 432 are respectively embedded into the hollow grooves 433 of the opposite side; one second coil 432 is arranged between any two adjacent first coils 431, and one first coil 431 is arranged between any two adjacent second coils 432. The coil assembly 43 mounted in this manner is more densely packed and the thrust of the linear motor 3 is greater.

And, referring to fig. 2 and 5, two hollow slots 433 at two ends of the coil assembly 43 are partially empty, and the potting adhesive 42 is located in the two partially empty hollow slots 433 of the coil assembly 43 and is formed with a reinforcing body 421 for reinforcing the coil assembly 43. Meanwhile, insulation plates 422 are fixedly adhered to two side faces of the potting colloid 42 in the thickness direction, so that the short circuit caused by the fact that an external object contacts the coil group 43 is reduced.

Next, referring to fig. 6, the two sets of cushion lock mechanisms 6 are identical in structure and installation, and any one of the two sets will be explained as an example.

Referring to fig. 7 and 8, the cushion lock mechanism 6 includes an insertion tube 61 and an insertion rod 62. The axis of the insertion tube 61 is parallel to the sliding direction of the object placing table 2, one end of the insertion tube 61 penetrates through the fixing support 11 and is in threaded connection with the fixing support, and the other end of the insertion tube 61 points to the object placing table 2; the insertion rod 62 is fixed at the lower side of the object placing table 2 and faces the insertion tube 61, and the insertion rod 62 is coaxial with the insertion tube 61 and is inserted and matched with the insertion tube 61. The damper lock mechanism 6 further includes a first elastic member 63, a movable sleeve 64, and a catching ball 65. The first elastic member 63 is a compression spring, the first elastic member 63 and the movable sleeve 64 are both sleeved on the insertion rod 62, and the first elastic member 63 abuts against between the movable sleeve 64 and the fixed bracket 11. The inner edge of one side of the movable sleeve 64 departing from the fixed support 11 is formed with a guiding inclined surface 641 through chamfering, the insertion tube 61 is located at the guiding inclined surface 641 and is provided with an embedded groove 611 from outside to inside, the bottom of the embedded groove 611 penetrates through the inner wall of the insertion tube 61 and is provided with an avoiding groove 612, the intercepting ball 65 is arranged in the embedded groove 611, one side of the intercepting ball 65 close to the guiding inclined surface 641 is abutted against the guiding inclined surface 641, and one side of the intercepting ball 65 located at the avoiding groove 612 is inserted into the insertion tube 61 through the avoiding groove 612. Meanwhile, the sidewall of the insertion rod 62 is provided with a plurality of clamping grooves 621 corresponding to the blocking balls 65, the clamping grooves 621 are in clamping fit with the portions of the blocking balls 65, which extend into the insertion tube 61, and the clamping grooves 621 are uniformly spaced along the axis of the insertion rod 62.

In order to improve the stability of the buffering process, four insertion grooves 611 are formed in the insertion pipe 61 at equal intervals around the axis of the insertion rod 62, the avoidance grooves 612 and the interception balls 65 are in one-to-one correspondence with the insertion grooves 611, and four sets of clamping grooves 621 corresponding to the insertion grooves 611 are provided. Moreover, the insertion end of the insertion rod 62 is chamfered.

When the linear motor 3 is in a fault shutdown state or is in a power failure state, the object placing table 2 moves towards the fixed support 11, the inserting rod 62 extrudes the blocking ball 65, the blocking ball 65 extrudes the movable sleeve 64 and the first elastic piece 63 through the guide inclined surface 641, and the impact force of the object placing table 2 and the inserting rod 62 is buffered; then, under the dodge of joint groove 621, interception ball 65 reciprocal extrusion and loosen movable sleeve 64 and first elastic component 63, realize putting thing platform 2 and peg graft many times of buffering of pole 62 for put thing platform 2 stops gradually, and simultaneously by movable sleeve 64 and the cooperation of first elastic component 63 with block ball 65 steadily compress tightly in arbitrary joint groove 621 behind peg 62 is stable, realize the locking to putting thing platform 2.

In order to ensure the stability of the buffering locking mechanism 6, a protective cap 642 is coaxially arranged at one end of the movable sleeve 64, which is far away from the first elastic member 63, the protective cap 642 is sleeved on the movable sleeve 64 and is in threaded connection with the movable sleeve 64, a through hole is coaxially formed in the protective cap 642, and the insertion rod 62 is inserted into the through hole and is in sliding fit with the through hole. At this time, the interception ball 65 is limited between the guiding inclined surface 641 and the protective cap 642, so that the interception ball 65 is prevented from falling out; likewise, the interception ball 65 limits the position of the movable sleeve 64.

Meanwhile, the pull rod 7 is further welded and fixed on the movable sleeve 64, the axis of the pull rod 7 is parallel to the axis of the movable sleeve 64, the pull rod 7 faces the fixed support 11 and penetrates through the fixed support 11, the pull rod 7 is matched with the fixed support 11 in a sliding mode, and one end, away from the movable sleeve 64, of the pull rod 7 is arranged in a bending mode, so that a worker can pull the pull rod conveniently.

For further promoting the effect to putting the buffering of thing platform 2, put and be provided with second elastic component 622 on the thing platform 2, second elastic component 622 is compression spring, and second elastic component 622 cover is established on bayonet pole 62, and second elastic component 622 is close to the one end of putting thing platform 2 and puts thing platform 2 fixedly. A buffer pad 6221 is fixedly disposed at one end of the second elastic member 622 close to the movable sleeve 64, the buffer pad 6221 is annular and sleeved on the insertion rod 62, and the buffer pad 6221 is in sliding fit with the insertion rod 62. The bumper 6221 in this embodiment is a rubber pad. When the object placing table 2 moves towards the fixed support 11, the inserting rod 62 penetrates into the inserting pipe 61, the cushion 6221 contacts the protective cap 642 and presses and compresses the second elastic member 622 to buffer the object placing table 2 in another step; at the same time, the cushion 6221 slidably connected to the insertion rod 62 helps to ensure the stability of the first elastic member 63.

The implementation principle of the linear motor module in the embodiment of the application is as follows:

in the practical application, the object can be placed on the object placing table 2, and the linear motor 3 pushes the object placing table 2 and the object on the object placing table 2 to slide in a reciprocating manner. Meanwhile, under the clamping of the densely arranged coil groups 43, the carrying capacity of the linear motor 3 mold is greatly increased.

When the linear motor 3 stops due to a fault or is powered off, the object placing table 2 moves towards the fixed support 11, the inserting rod 62 penetrates into the inserting pipe 61 at first, meanwhile, the cushion 6221 abuts against the protective cap 642 and extrudes and compresses the second elastic piece 622 to cushion the object placing table 2; then, the insertion rod 62 will press the blocking ball 65, and the blocking ball 65 presses the movable sleeve 64 and the first elastic member 63 through the guiding inclined surface 641, and buffers the impact force of the object table 2 and the insertion rod 62; next, under the avoidance of the clamping groove 621, the intercepting ball 65 reciprocally extrudes and releases the movable sleeve 64 and the first elastic member 63, so as to realize multiple buffering of the object placing table 2 and the insertion rod 62, and the object placing table 2 gradually stops. After the object placing table 2 stops, the blocking ball 65 is stably pressed in the corresponding clamping groove 621 by the cooperation of the movable sleeve 64 and the first elastic piece 63, and the object placing table 2 is locked.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a linear electric motor module which characterized in that: including linear electric motor active cell, linear electric motor active cell includes installing support (41) and installs coil assembly (43) on installing support (41), its characterized in that: the coil group (43) comprises a first coil (431) and a second coil (432), the first coil (431) and the second coil (432) are both in a rectangular frame structure, and hollow core grooves (433) are formed in the middle parts of the first coil (431) and the second coil (432);

both ends of the first coil (431) and the second coil (432) are bent to form avoidance parts (434), both the avoidance parts (434) of the first coil (431) and both the avoidance parts (434) of the second coil (432) are bent towards one side of the corresponding hollow core groove (433) which is open, embedding parts (435) are formed between the two avoidance parts (434) of the first coil (431) and between the two avoidance parts (434) of the second coil (432), and the width of the hollow core groove (433) is not less than the sum of the widths of the two embedding parts (435);

the first coil (431) and the second coil (432) are respectively provided with a plurality of coils, the first coil (431) and the second coil (432) are sequentially arranged adjacently, and the embedding parts (435) of the adjacent first coil (431) and the adjacent second coil (432) are respectively embedded into the hollow grooves (433) of the opposite side;

the linear motor is characterized by further comprising a base (1), a stator (5) fixed on the base (1) and an object placing table (2) arranged on the base (1) in a sliding mode, wherein an installation support (41) of the rotor (4) is fixed on the object placing table (2), an embedding groove (511) is formed in the stator (5), and a coil group (43) of the rotor (4) of the linear motor (3) is embedded into the embedding groove (511);

the base (1) is fixedly provided with fixed supports (11) at the two side edges of the sliding direction of the object placing table (2), and a buffer locking mechanism (6) for buffering the impact force of the object placing table (2) and locking the object placing table (2) on the base (1) is arranged between each fixed support (11) and the object placing table (2);

the buffer locking mechanism (6) comprises an insertion pipe (61), an insertion rod (62), a first elastic piece (63) and a movable sleeve (64), the insertion pipe (61) is fixed on the fixed support (11), the axis of the insertion pipe (61) is parallel to the sliding direction of the object placing table (2), the insertion rod (62) is fixed on the object placing table (2), the insertion rod (62) faces the insertion pipe (61) and is coaxial with the insertion pipe (61), and the insertion rod (62) is in insertion fit with the insertion pipe (61);

the movable sleeve (64) is sleeved on the inserting pipe (61), the movable sleeve (64) is positioned on one side, close to the object placing table (2), of the fixed support (11), the first elastic piece (63) abuts against between the movable sleeve (64) and the fixed support (11), a guide inclined surface (641) is formed on the inner edge, away from one end face of the first elastic piece (63), of the movable sleeve (64) through a chamfer, an embedded groove (611) is formed in the inserting pipe (61) from outside to inside, an avoiding groove (612) is formed in the groove bottom of the embedded groove (611) through the inserting pipe (61) in a closed mode, the embedded groove (611) is embedded into the blocking ball (65), one side, close to the guide inclined surface (641), of the blocking ball (65) abuts against the guide inclined surface (641), the blocking ball (65) penetrates into the inserting pipe (61) through the avoiding groove (612) on one side of the avoiding groove (612), and a clamping groove (621) is formed in the inserting rod (62) corresponding to the blocking ball (65), a plurality of clamping grooves (621) are arranged along the axis of the insertion rod (62);

a second elastic piece (622) is arranged on the object placing table (2); when the inserting rod (62) penetrates into the inserting pipe (61), two ends of the second elastic piece (622) respectively support the object placing table (2) and the movable sleeve (64).

2. A linear motor module according to claim 1, characterized in that: one end of the movable sleeve (64) departing from the first elastic piece (63) is provided with a protective cap (642), the protective cap (642) is sleeved at one end of the movable sleeve (64) departing from the first elastic piece (63) and is detachably fixed with the movable sleeve (64), and the insertion pipe (61) coaxially penetrates through the protective cap (642) and is in sliding fit with the protective cap (642).

3. A linear motor module according to claim 1, characterized in that: the movable sleeve (64) is fixedly provided with a pull rod (7), the axis of the pull rod (7) is parallel to the axis of the movable sleeve (64), the pull rod (7) extends towards the fixed support (11) and penetrates through the fixed support (11), and the pull rod (7) is connected with the fixed support (11) in a sliding mode.

4. A linear motor module according to claim 2, characterized in that: one end of the second elastic piece (622) close to the movable sleeve (64) is fixedly provided with a buffer pad (6221).