CN220431325U - Linear transmission system - Google Patents

Abstract

The utility model discloses a linear transmission system, which comprises a guide rail and a magnetic driver, wherein the guide rail comprises a straight line section and an arc section, the magnetic driver comprises a rotor main body and a plurality of groups of pulleys, and the magnetic driver is connected to the guide rail in a sliding manner through the pulleys; the plurality of groups of pulleys comprise a first pulley block and at least two groups of second pulley blocks, the first pulley block comprises a first inner pulley and a first outer pulley, the second pulley block comprises a second inner pulley and a second outer pulley, the first inner pulley and the second inner pulley are positioned at the inner side of the guide rail, and the first outer pulley and the second outer pulley are positioned at the outer side of the guide rail; the first inner side pulleys and the second inner side pulleys are distributed in an arc shape, and the second outer side pulleys are elastically abutted against the guide rail through the first elastic piece; when the magnetic driver moves to the arc section, an extension line of a connecting line of the first inner pulley and the first outer pulley passes through the center of the arc section. The technical scheme of the utility model can solve the technical problem of severe vibration of the mover when the mover passes through the arc section of the guide rail.

Description

Linear transmission system

Technical Field

The utility model relates to the technical field of magnetic drive conveying, in particular to a linear conveying system.

Background

The precise motion control technology is a core technology of high-end equipment and advanced manufacturing industry, is an important means for realizing fine processing and improving the product quality and the production efficiency, and is widely applied to the industries of automatic production lines, packaging, transportation, assembly automation and the like at present. The traditional driving system is driven by adopting a rotating motor, and the driving system has the advantages of complex structure, low precision and high failure rate, and is difficult to realize a precise motion control technology. The linear motor is a transmission device which directly converts electric energy into linear motion mechanical energy without any intermediate conversion mechanism.

Compared with a rotary motor, the linear motor has the following main characteristics: firstly, the structure is simple, and the linear motor does not need an additional device for changing the rotary motion into the linear motion, so that the structure of the system is greatly simplified, and the weight and the volume are greatly reduced; secondly, the positioning accuracy is high, and the linear motor can realize direct transmission at the place needing linear motion, so that various positioning errors caused by intermediate links can be eliminated, and if microcomputer control is adopted, the positioning accuracy of the whole system can be greatly improved; and thirdly, the reaction speed is high, the sensitivity is high, and the follow-up property is good. The linear motor is easy to support the rotor by magnetic suspension, so that a certain air gap is kept between the rotor and the stator all the time without contact, the contact friction resistance between the stator and the rotor is eliminated, and the sensitivity, the rapidity and the follow-up performance of the system are greatly improved; fourth, the work is safe and reliable, long-lived. The linear motor can realize non-contact transmission force, and the mechanical friction loss is almost zero, so that the linear motor has few faults and long service life, and is free from maintenance, thereby being safe and reliable in work and capable of adopting the linear motor to realize the precise motion control technology.

The linear motor generally comprises a runner, when the runner moves, the runner needs to be matched with a guide rail through a plurality of pulley blocks to guide the movement of the runner, a gap between two pulleys in the pulley blocks is fixed, and when the runner passes through an arc section of the guide rail, the runner can vibrate severely due to the influence of centrifugal force, which can certainly influence the positioning accuracy and stability of the runner on the guide rail.

Disclosure of Invention

The embodiment of the utility model provides a linear transmission system which can solve the technical problem that a rotor severely vibrates when passing through an arc section of a guide rail.

An embodiment of the present utility model provides a linear transmission system, including:

the guide rail comprises a straight line section and an arc section, and the straight line section is connected with the arc section;

the magnetic driver comprises a rotor main body and a plurality of groups of pulleys, the pulleys are rotatably arranged on the rotor main body, a gap is reserved between two pulleys in each group of pulleys, and the guide rail is arranged in the gap, so that the magnetic driver is connected with the guide rail in a sliding manner through the pulleys; the plurality of groups of pulleys are distributed along the transmission direction of the magnetic driver;

the plurality of groups of pulleys comprise a first pulley block and at least two groups of second pulley blocks, the second pulley blocks are arranged on at least one side of the first pulley block in the transmission direction of the magnetic driver, the first pulley blocks comprise a first inner pulley and a first outer pulley, the second pulley blocks comprise a second inner pulley and a second outer pulley, the first inner pulley and the second inner pulley are positioned on the inner side of the guide rail, and the first outer pulley and the second outer pulley are positioned on the outer side of the guide rail; the first inner side pulleys and the second inner side pulleys are distributed in an arc shape, and the second outer side pulleys are elastically abutted against the guide rail through a first elastic piece;

when the magnetic driver moves to the straight line segment, the first inner side pulley is abutted against the inner side of the straight line segment, the second inner side pulley is arranged at intervals with the straight line segment, the first outer side pulley is abutted against the outer side of the straight line segment, and the second outer side pulley is elastically abutted against the outer side of the straight line segment; when the magnetic driver moves to the arc section, the first inner side pulley and the second inner side pulley are abutted to the inner side of the arc section, the first outer side pulley is abutted to the outer side of the arc section, the second outer side pulley is elastically abutted to the outer side of the arc section, and an extension line of a connecting line of the first inner side pulley and the first outer side pulley passes through the circle center of the arc section.

Optionally, in some embodiments of the present utility model, when the magnetic driver moves to the circular arc segment, a direction of the elastic force provided by the first elastic member to the second outer pulley passes through a center of the circular arc segment.

Optionally, in some embodiments of the present utility model, when the magnetic driver moves to the circular arc segment, an extension line of a connecting line of the second inner pulley and the second outer pulley passes through a center of the circular arc segment.

Optionally, in some embodiments of the present utility model, the first pulley block is symmetrically provided with the second pulley block on opposite sides of the transmission direction of the magnetic driver.

Optionally, in some embodiments of the present utility model, the adjacent side of the first pulley block is provided with the second pulley block; the plurality of groups of pulleys further comprise at least one group of third pulley blocks, and the second pulley blocks and the third pulley blocks are distributed in a staggered manner on one side of the first pulley block; the third pulley block comprises a third inner pulley and a third outer pulley, the third inner pulley is positioned at the inner side of the guide rail, and the third outer pulley is positioned at the outer side of the guide rail; the third inner pulley is elastically abutted against the guide rail through a second elastic piece;

when the magnetic driver moves to the straight line segment, the third inner pulley is elastically abutted against the inner side of the straight line segment, and the third outer pulley is abutted against the outer side of the straight line segment; when the magnetic driving piece moves to the arc section, the third inner pulley is elastically abutted to the inner side of the arc section, and the third outer pulley and the arc section are arranged at intervals.

Optionally, in some embodiments of the present utility model, the first pulley group is symmetrically provided with the third pulley group at opposite sides of the transmission direction of the magnetic driver.

Alternatively, in some embodiments of the present utility model, when the magnetic driver moves to the straight line segment, the direction of the elastic force provided by the second elastic member to the third inner pulley is perpendicular to the straight line segment, and the connecting line of the first inner pulley and the third inner pulley is parallel to the straight line segment.

Optionally, in some embodiments of the utility model, the linear transport system further comprises a plurality of mounting blocks slidably connected to the mover body;

the two ends of the first elastic piece are respectively abutted against the rotor main body and the mounting block, and the second outer side sliding wheel is connected with the mounting block corresponding to the first elastic piece in a rotating way;

the two ends of the second elastic piece are respectively abutted to the rotor main body and the other mounting block, and the third inner side pulley is rotationally connected to the mounting block corresponding to the second elastic piece.

Alternatively, in some embodiments of the utility model, the magnetic drive comprises 3 to 10 sets of the pulleys.

Optionally, in some embodiments of the present utility model, the magnetic driver further includes a permanent magnet array, and the permanent magnet array is disposed on the mover body;

the linear transmission system further includes:

the magnetic driving stator is arranged on the inner side of the guide rail and is provided with a stator coil, and a magnetic field generated by the permanent magnet array and an excitation magnetic field generated by the stator coil can interact to push the magnetic driving stator to move along the guide rail.

The technical scheme of the utility model has the beneficial effects that at least:

(1) When the magnetic driver moves to the arc section, the first inner side pulley and the first outer side pulley are respectively abutted against the inner side and the outer side of the arc section, an extension line of a connecting line of the first inner side pulley and the first outer side pulley passes through the circle center of the arc section, and the first inner side pulley and the first outer side pulley can play a guiding role in rigidly supporting the magnetic driver in the arc section, so that the reliability of sliding connection of the magnetic driver and the guide rail is effectively ensured;

(2) The first inner side pulleys and the second inner side pulleys are distributed in an arc shape, and the shape of the first inner side pulleys is matched with that of the arc section, so that the first inner side pulleys and the second inner side pulleys are stably abutted against the inner side of the arc section, and the first inner side pulleys and the second inner side pulleys can play a good guiding role in the arc section;

(3) When the magnetic driving piece moves to the arc section, the second outer side pulley is elastically abutted to the outer side of the arc section through the first elastic piece, so that vibration of the magnetic driving piece can be buffered.

Through the arrangement, the technical problem of severe vibration of the magnetic driver when passing through the circular arc section can be effectively solved, and the stability of the magnetic driver on the guide rail is improved, so that the positioning accuracy of the magnetic driver on the guide rail is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a linear transmission system according to an embodiment of the present utility model;

FIG. 2 is a schematic top view of a linear transport system according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of area A of FIG. 2;

FIG. 4 is an enlarged schematic view of region B of FIG. 2;

FIG. 5 is a schematic diagram of a partial explosion structure of a magnetic drive according to an embodiment of the present utility model;

FIG. 6 is a schematic perspective view of a mover body according to an embodiment of the present utility model;

fig. 7 is a schematic perspective view of a mover body according to another embodiment of the present utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the technical solutions should be considered that the combination does not exist and is not within the scope of protection claimed by the present utility model.

Referring to fig. 1, an embodiment of the present utility model provides a linear transmission system, which includes a guide rail 100, a magnetic driving stator 200, and a magnetic driving stator 300. The magnetic drive sub 200 is slidably connected to the guide rail 100, and the guide rail 100 is used for guiding the movement of the magnetic drive sub 200. The magnetic driving stator 300 is disposed inside the guide rail 100, and the magnetic driving stator 300 is provided with a stator coil (not shown); referring to fig. 7, the magnetic driver 200 is provided with a permanent magnet array 240, and a magnetic field generated by the permanent magnet array 240 and an excitation magnetic field generated by a stator coil can interact to push the magnetic driver 200 to move along the guide rail 100.

As shown in fig. 2, the guide rail 100 includes a straight line segment 110 and a circular arc segment 120, and the straight line segment 110 is connected to the circular arc segment 120. As shown in fig. 3 and 4, the magnetic driver 200 includes a mover body 210 and a plurality of sets of pulleys 220, a permanent magnet array 240 is provided on the mover body 210, the pulleys 220 are rotatably provided on the mover body 210, a gap 230 is provided between two pulleys 220 in each set of pulleys 220, and the guide rail 100 is provided in the gap 230, so that the magnetic driver 200 is slidably connected to the guide rail 100 through the pulleys 220. The sets of pulleys 220 are distributed along the direction of travel of the magnetic drive 200.

As shown in fig. 3 and 4, the plurality of sets of pulleys 220 include a first pulley block 221 and at least two sets of second pulley blocks 222, the first pulley block 221 is provided with the second pulley block 222 on at least one side of the transmission direction of the magnetic driver 200, the first pulley block 221 includes a first inner pulley 2211 and a first outer pulley 2212, the second pulley block 222 includes a second inner pulley 2221 and a second outer pulley 2222, the first inner pulley 2211 and the second inner pulley 2221 are located at the inner side of the guide rail 100, and the first outer pulley 2212 and the second outer pulley 2222 are located at the outer side of the guide rail 100; the first inner pulley 2211 and the second inner pulley 2221 are distributed in an arc shape, and the second outer pulley 2222 is elastically abutted against the guide rail 100 by the first elastic member 250.

As shown in fig. 3, when the magnetic driver 200 moves to the linear segment 110, the first inner pulley 2211 abuts against the inner side of the linear segment 110, the second inner pulley 2221 is spaced apart from the linear segment 110, the first outer pulley 2212 abuts against the outer side of the linear segment 110, and the second outer pulley 2222 elastically abuts against the outer side of the linear segment 110; as shown in fig. 4, when the magnetic driver 200 moves to the arc segment 120, the first inner pulley 2211 and the second inner pulley 2221 are abutted against the inner side of the arc segment 120, the first outer pulley 2212 is abutted against the outer side of the arc segment 120, the second outer pulley 2222 is elastically abutted against the outer side of the arc segment 120, and the extension line of the connecting line of the first inner pulley 2211 and the first outer pulley 2212 passes through the center of the arc segment 120.

The technical scheme of the utility model has the beneficial effects that at least:

(1) When the magnetic driver 200 moves to the arc segment 120, the first inner pulley 2211 and the first outer pulley 2212 are respectively abutted against the inner side and the outer side of the arc segment 120, and the extension line of the connecting line of the first inner pulley 2211 and the first outer pulley 2212 passes through the center of the arc segment 120, the first inner pulley 2211 and the first outer pulley 2212 can play a role in rigidly supporting the magnetic driver 200 in the arc segment 120, so that the reliability of the sliding connection of the magnetic driver 200 and the guide rail 100 is effectively ensured;

(2) The first inner pulley 2211 and the second inner pulley 2221 are distributed in an arc shape, and the shape of the first inner pulley 2211 and the second inner pulley 2221 are matched with the shape of the arc section 120, so that the first inner pulley 2211 and the second inner pulley 2221 are stably abutted against the inner side of the arc section 120, and the first inner pulley 2211 and the second inner pulley 2221 can play a good guiding role in the arc section 120;

(3) When the magnetic driver 200 moves to the arc segment 120, the second outer pulley 2222 elastically contacts the outer side of the arc segment 120 through the first elastic member 250, so as to buffer the vibration of the magnetic driver 200.

Through the arrangement, the technical problem of severe vibration of the magnetic driver 200 when passing through the circular arc section 120 can be effectively solved, and the stability of the magnetic driver 200 on the guide rail 100 can be improved, so that the positioning accuracy of the magnetic driver 200 on the guide rail 100 is ensured.

Specifically, as shown in fig. 4, when the magnetic driver 200 moves to the arc segment 120, the direction of the elastic force provided by the first elastic member 250 to the second outer pulley 2222 passes through the center of the arc segment 120. Through the above arrangement, the elastic force provided by the first elastic member 250 to the second outer pulley 2222 is the same as the direction of the centrifugal force, so that the vibration phenomenon caused by the centrifugal force can be better buffered.

Specifically, as shown in fig. 4, when the magnetic driver 200 moves to the arc segment 120, an extension line of a connection line of the second inner pulley 2221 and the second outer pulley 2222 passes through the center of the arc segment 120. Through the arrangement, when the magnetic driver 200 moves to the circular arc section 120, the second inner side pulley 2221 and the second outer side pulley 2222 are distributed along the radial direction of the circular arc section 120, which is matched with the shape of the circular arc section 120, the second inner side pulley 2221 can play a rigid support along the radial direction of the circular arc section 120, and the second outer side pulley 2222 can play an elastic support along the radial direction of the circular arc section 120, so that the distribution rule of the second inner side pulley 2221 and the second outer side pulley 2222 is matched with the circular arc section 120, the technical problem of severe vibration of the magnetic driver 200 when passing through the circular arc section 120 is effectively improved, the stability of the magnetic driver 200 on the guide rail 100 is improved, and the positioning accuracy of the magnetic driver 200 on the guide rail 100 is ensured.

Preferably, as shown in fig. 3 and 4, the first pulley blocks 221 are symmetrically provided with the second pulley blocks 222 at opposite sides of the transmission direction of the magnetic driving sub 200, that is, the plurality of sets of pulleys 220 include a plurality of sets of second pulley blocks 222, and the number of the second pulley blocks 222 at one side of the first pulley block 221 is the same as the number of the second pulley blocks 222 at the other side. Through the arrangement, when the magnetic driving device passes through the arc section 120 of the guide rail 100, the buffer uniformity of the magnetic driving device 200 can be improved, the buffer effect is greatly improved, the stability of the rotor on the guide rail 100 is improved, and the positioning accuracy of the rotor on the guide rail 100 is effectively ensured. Of course, the number and distribution of the second pulley sets 222 may be appropriately adjusted according to the actual situation and the specific requirement, which is not limited herein.

In the embodiment of the present utility model, the magnetic driving sub 200 is provided with two sets of second pulley blocks 222, and the two sets of second pulley blocks 222 are respectively disposed on two opposite sides of the first pulley block 221, and of course, according to the selection of practical situations and the specific requirement setting, the magnetic driving sub 200 may be provided with more second pulley blocks 222, and the number of the second pulley blocks 222 is not limited only.

It should be noted that the plurality of sets of pulleys 220 may include only the first pulley set 221 and the second pulley set 222, and of course, the plurality of sets of pulleys 220 may also include other types of pulley sets 220 according to the actual situation and the specific requirement.

Specifically, as shown in fig. 3 and 4, a second pulley block 222 is disposed adjacent to the first pulley block 221; the pulley sets 220 further comprise at least one third pulley set 223, and the second pulley sets 222 and the third pulley sets 223 are staggered on one side of the first pulley set 221; the third pulley block 223 includes a third inner pulley 2231 and a third outer pulley 2232, the third inner pulley 2231 being located inside the rail 100 and the third outer pulley 2232 being located outside the rail 100; the third inner pulley 2231 is elastically abutted against the guide rail 100 by the second elastic member 260. When the magnetic driver 200 moves to the straight line segment 110, the third inner pulley 2231 elastically abuts against the inner side of the straight line segment 110, and the third outer pulley 2232 abuts against the outer side of the straight line segment 110; when the magnetic driver 200 moves to the arc segment 120, the third inner pulley 2231 elastically contacts the inner side of the arc segment 120, and the third outer pulley 2232 is spaced apart from the arc segment 120. The third inner pulley 2231 is elastically abutted against the inner side of the guide rail 100 through the second elastic member 260, so that vibration of the magnetic driver 200 can be buffered, the technical problem of severe vibration of the magnetic driver 200 when passing through the circular arc section 120 can be solved to a certain extent, the elastic force can enable the third inner pulley 2231 to be stably abutted against the guide rail 100, stability of the magnetic driver 200 on the guide rail 100 can be improved, and positioning accuracy of the magnetic driver 200 on the guide rail 100 can be effectively guaranteed. In this embodiment, the third pulley block 223 may also be provided adjacent to the first pulley block 221, which is not limited only here.

It should be noted that, the magnetic driver 200 is easy to displace inward during the process of moving the circular arc section 120 of the guide rail 100 to the linear section 110, and the third inner pulley 2231 can be elastically supported on the guide rail 100 by the elastic force of the second elastic member 260, so as to play a role of buffering and prevent the mover from vibrating.

In the embodiment of the present utility model, the magnetic driving sub 200 is provided with two sets of third pulley blocks 223, the two sets of third pulley blocks 223 are respectively located at one side of the corresponding second pulley block 222 far away from the first pulley block 221, of course, according to the selection of practical situations and the specific requirement setting, the magnetic driving sub 200 can be provided with more third pulley blocks 223, as long as the second pulley block 222 and the third pulley block 223 are ensured to be staggered at one side or two opposite sides of the first pulley block 221, and the number of the third pulley blocks 223 is not limited only.

Specifically, as shown in fig. 3 and 4, the first pulley blocks 221 are symmetrically provided with third pulley blocks 223 on opposite sides of the transmission direction of the magnetic driving sub 200, that is, the plurality of sets of pulleys 220 include a plurality of sets of third pulley blocks 223, and the number of the third pulley blocks 223 on one side of the first pulley blocks 221 is the same as the number of the third pulley blocks 223 on the other side. Through the arrangement, when the linear section 110 of the guide rail 100 passes through, the uniformity of the displacement buffering of the magnetic driver 200 can be improved, the buffering effect is greatly improved, the stability of the rotor on the guide rail 100 is improved, and the positioning accuracy of the rotor on the guide rail 100 is effectively ensured.

Specifically, as shown in fig. 3, when the magnetic driver 200 moves to the straight line segment 110, the direction of the elastic force provided by the second elastic member 260 to the third inner pulley 2231 is perpendicular to the straight line segment 110, and the connecting line of the first inner pulley 2211 and the third inner pulley 2231 is parallel to the straight line segment 110. By the above arrangement, the direction of the elastic force provided by the second elastic member 260 to the third inner pulley 2231 is perpendicular to the straight line segment 110, so as to buffer the biasing force of the magnetic driving member 200 toward the inner side caused by the elastic force of the first elastic member 250.

In the embodiment of the present utility model, as shown in fig. 3, when the magnetic driver 200 moves in the straight line segment 110, the first inner pulley 2211 and the third inner pulley 2231 are abutted against the inner side of the guide rail 100, and the first outer pulley 2212, the second outer pulley 2222 and the third outer pulley 2232 are abutted against the outer side of the guide rail 100, because the direction of the elastic force provided by the second elastic member 260 to the third inner pulley 2231 is perpendicular to the straight line segment 110, the direction of the elastic force provided by the first elastic member 250 to the second outer pulley 2222 is inclined with respect to the straight line segment 110, and the component force of the elastic force borne by the second outer pulley 2222 in the direction perpendicular to the straight line segment 110 is insufficient to support the elastic force borne by the third inner pulley 2231, therefore, when the magnetic driver 200 moves in the straight line segment 110, the number of pulleys 220 capable of providing rigid support on the outer side is increased over the number of pulleys 220 capable of providing rigid support on the inner side, so that the arrangement can ensure the stability of the magnetic driver 200 in the straight line segment 110.

Specifically, in the embodiment of the present utility model, each magnetic driver 200 includes 3 to 10 sets of pulleys 220 without affecting the use effect, for example, the magnetic driver 200 may include 3, 5, 7, 9 or 10 sets of pulleys 220 to reduce the cost.

In particular, as shown in fig. 3 to 5, the linear transport system further includes a plurality of mounting blocks 270, and the mounting blocks 270 are slidably coupled to the mover body 210. The two ends of the first elastic member 250 are respectively abutted against the rotor body 210 and a mounting block 270, and the second outer pulley 2222 is rotatably connected to the mounting block 270 corresponding to the first elastic member 250; both ends of the second elastic member 260 are respectively abutted against the mover body 210 and the other mounting block 270, and the third inner pulley 2231 is rotatably connected to the mounting block 270 corresponding to the second elastic member 260. Through the above arrangement, so that the second outside pulley 2222 and the third inside pulley 2231 are rotatably provided on the mover body 210, the first elastic member 250 may provide the second outside pulley 2222 with an elastic force toward the guide rail 100, and the second elastic member 260 may provide the third inside pulley 2231 with an elastic force toward the guide rail 100. In the embodiment of the present utility model, the first elastic member 250 and the second elastic member 260 may be springs, and of course, the elastic members may be other elastic parts according to the actual situation and the specific requirement, which is not limited only herein.

Specifically, referring to fig. 5 and 6, the pulley 220 is disposed on a first side of the mover body 210, and a second side of the mover body 210, which is opposite to the first side, is provided with a sliding groove 211 corresponding to the mounting block 270. In this embodiment, the pulley 220 may be disposed on the bottom surface of the mover body 210, and the sliding groove 211 may be disposed on the top surface of the mover body 210.

The mounting block 270 is slidably inserted into the sliding slot 211, so that the mounting block 270 is slidably connected to the mover body 210 along the direction of the elastic force received by the pulley 220. With this structure, the sliding connection of the mounting block 270 can be realized without adding an additional slide rail, which can save cost and reduce assembly difficulty.

The bottom surface of the slide groove 211 is provided with a through-hole 212, and the pulley 220 (the second outer pulley 2222 and the third inner pulley 2231) is rotatably connected to the mounting block 270 through the through-hole 212. Under this structure, the installation block 270 is hidden inside the rotor main body 210, and the pulley 220 and the installation block 270 are connected by the through hole 212, so that the structure is compact, and the miniaturization design of the magnetic driver 200 is facilitated. In this embodiment, the pulley 220 may be, but is not limited to being, rotatably coupled to the mounting block 270 via a shaft.

Specifically, referring to fig. 5 and 6, the side surface of the mover body 210 is further provided with a limiting channel 213, the limiting channel 213 is communicated with the sliding groove 211, and the linear transmission system further includes a fastening member 280, wherein the fastening member 280 is assembled in the limiting channel 213. The mounting block 270 is provided with guide posts 271. The first elastic piece 250 is arranged in the corresponding limiting channel 213 and the sliding groove 211, the first end of the first elastic piece 250 is sleeved outside the corresponding guide post 271, and the second end of the first elastic piece 250 is abutted against the corresponding fastening piece 280; the assembly mode of the second elastic member 260 is the same as that of the first elastic member 250, the second elastic member 260 is arranged in the corresponding limiting channel 213 and the corresponding sliding groove 211, the first end of the second elastic member 260 is sleeved outside the corresponding guide post 271, and the second end of the second elastic member 260 is abutted against the corresponding fastener 280. Under this structure, can carry out spacing to first elastic component 250 and second elastic component 260, prevent that first elastic component 250 and second elastic component 260 from shifting, effectively improve elastic support structure's reliability.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A linear transmission system, comprising:

the guide rail comprises a straight line section and an arc section, and the straight line section is connected with the arc section;

the magnetic driver comprises a rotor main body and a plurality of groups of pulleys, the pulleys are rotatably arranged on the rotor main body, a gap is reserved between two pulleys in each group of pulleys, and the guide rail is arranged in the gap, so that the magnetic driver is connected with the guide rail in a sliding manner through the pulleys; the plurality of groups of pulleys are distributed along the transmission direction of the magnetic driver;

the plurality of groups of pulleys comprise a first pulley block and at least two groups of second pulley blocks, the second pulley blocks are arranged on at least one side of the first pulley block in the transmission direction of the magnetic driver, the first pulley blocks comprise a first inner pulley and a first outer pulley, the second pulley blocks comprise a second inner pulley and a second outer pulley, the first inner pulley and the second inner pulley are positioned on the inner side of the guide rail, and the first outer pulley and the second outer pulley are positioned on the outer side of the guide rail; the first inner side pulleys and the second inner side pulleys are distributed in an arc shape, and the second outer side pulleys are elastically abutted against the guide rail through a first elastic piece;

when the magnetic driver moves to the straight line segment, the first inner side pulley is abutted against the inner side of the straight line segment, the second inner side pulley is arranged at intervals with the straight line segment, the first outer side pulley is abutted against the outer side of the straight line segment, and the second outer side pulley is elastically abutted against the outer side of the straight line segment; when the magnetic driver moves to the arc section, the first inner side pulley and the second inner side pulley are abutted to the inner side of the arc section, the first outer side pulley is abutted to the outer side of the arc section, the second outer side pulley is elastically abutted to the outer side of the arc section, and an extension line of a connecting line of the first inner side pulley and the first outer side pulley passes through the circle center of the arc section.

2. The linear transfer system of claim 1, wherein the direction of the spring force provided by the first spring member to the second outboard pulley passes through the center of the circular arc segment when the magnetic drive moves to the circular arc segment.

3. The linear transfer system of claim 1, wherein an extension of a connection line of the second inner pulley and the second outer pulley passes through a center of the circular arc segment when the magnetic drive moves to the circular arc segment.

4. The linear conveyor system as claimed in claim 1, wherein the first pulley blocks are symmetrically provided with the second pulley blocks on opposite sides of the direction of conveyance of the magnetic drive.

5. The linear conveyor system of claim 1, wherein the second pulley block is provided adjacent to the first pulley block; the plurality of groups of pulleys further comprise at least one group of third pulley blocks, and the second pulley blocks and the third pulley blocks are distributed in a staggered manner on one side of the first pulley block; the third pulley block comprises a third inner pulley and a third outer pulley, the third inner pulley is positioned at the inner side of the guide rail, and the third outer pulley is positioned at the outer side of the guide rail; the third inner pulley is elastically abutted against the guide rail through a second elastic piece;

when the magnetic driver moves to the straight line segment, the third inner pulley is elastically abutted against the inner side of the straight line segment, and the third outer pulley is abutted against the outer side of the straight line segment; when the magnetic driving piece moves to the arc section, the third inner pulley is elastically abutted to the inner side of the arc section, and the third outer pulley and the arc section are arranged at intervals.

6. The linear transfer system of claim 5, wherein the first pulley arrangement is symmetrically provided with the third pulley arrangement on opposite sides of the transfer direction of the magnetic drive.

7. The linear transfer system of claim 5, wherein the direction of the spring force provided by the second spring member to the third inner pulley is perpendicular to the straight line segment when the magnetic drive moves to the straight line segment, and the line connecting the first inner pulley and the third inner pulley is parallel to the straight line segment.

8. The linear transport system of claim 5, further comprising a plurality of mounting blocks slidably coupled to the mover body;

the two ends of the first elastic piece are respectively abutted against the rotor main body and the mounting block, and the second outer side sliding wheel is connected with the mounting block corresponding to the first elastic piece in a rotating way;

the two ends of the second elastic piece are respectively abutted to the rotor main body and the other mounting block, and the third inner side pulley is rotationally connected to the mounting block corresponding to the second elastic piece.

9. The linear transport system of claim 1, wherein the magnetic drive comprises 3 to 10 sets of the pulleys.

10. The linear transport system of any one of claims 1-9, wherein the magnetic drive further comprises an array of permanent magnets disposed on the mover body;

the linear transmission system further includes:

the magnetic driving stator is arranged on the inner side of the guide rail and is provided with a stator coil, and a magnetic field generated by the permanent magnet array and an excitation magnetic field generated by the stator coil can interact to push the magnetic driving stator to move along the guide rail.