CN217545790U

CN217545790U - Mechanical limiting mechanism

Info

Publication number: CN217545790U
Application number: CN202220658460.3U
Authority: CN
Inventors: 张东; 任超
Original assignee: Polygon Automation Technology Chengdu Co ltd
Current assignee: Polygon Automation Technology Chengdu Co ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-10-04
Anticipated expiration: 2032-03-23

Abstract

The utility model discloses a machinery stop gear relates to automation equipment technical field, including motor and mounting panel, still include: the limiting plate and the limiting slide block; the motor and the limiting plate are respectively positioned at two sides of the mounting plate, and a motor shaft of the motor penetrates through the mounting plate to be connected with the limiting plate; the surface of the limiting plate close to the mounting plate is provided with a vortex line chute; the surface of the mounting plate, which is close to the limiting plate, is provided with a chute; the limiting slide block is arranged in the chute in a sliding manner; the limiting slide block is provided with a limiting upright post, and the limiting upright post is arranged in the vortex line sliding groove in a sliding manner. When the soft spacing of motor became invalid, spacing stand can stop the spacing integrated circuit board to can realize stopping the hard of motor, avoid the motor to stir disconnected pencil. In addition, the nature of the vortex line sliding groove in the limiting mechanism determines that the hard limiting angle of rotation of the limiting mechanism can be larger than 360 degrees, and the larger the ring number of the vortex line sliding groove is, the larger the rotation angle of the hard limiting mechanism can be.

Description

Mechanical limiting mechanism

Technical Field

The utility model relates to an automation equipment technical field, concretely relates to machinery stop gear.

Background

With the continuous advance of intelligent manufacturing, the demand for automation equipment of the class is increasing, wherein the motor rotating structure is used very frequently. When the automatic equipment is used for periodic rotation work, the motor is generally subjected to soft limiting by adopting program logic, however, in the using process of daily equipment, the reliability of a soft limiting mode is poor, the program is easy to break down, so that the motor cannot stop rotating in time, and a wire harness air pipe on the equipment is often broken due to the rotation of the motor, so that the equipment is broken down. A stop mechanism is used to make a hard stop to help stop the motor from rotating. However, when the existing mechanical limiting mechanism is used for hard limiting of the motor, the limiting angle can only be 0-90 degrees or 0-180 degrees, and when the motor needs to periodically rotate at a rotation angle larger than 360 degrees or more, the motor cannot be effectively and hard limited.

The description of the background art of the present invention pertains to the related art related to the present invention, and is only for the purpose of illustrating and facilitating the understanding of the contents of the present invention, and it is not to be understood that the applicant definitely considers or presumes that the applicant considers the present invention as the prior art of the application date of the present invention which is filed for the first time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mechanical stop gear to solve the problem that current stop gear can't be greater than 360 to the rotatory hard spacing angle of motor.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

the utility model provides a mechanical stop gear, includes motor and mounting panel, still includes: limiting plate and a limiting slide block; the motor and the limiting plate are respectively positioned at two sides of the mounting plate, and a motor shaft of the motor penetrates through the mounting plate to be connected with the limiting plate; the surface of the limiting plate close to the mounting plate is provided with a vortex line chute; the surface of the mounting plate, which is close to the limiting plate, is provided with a chute; the limiting slide block is arranged in the chute in a sliding manner; the limiting slide block is provided with a limiting upright post, and the limiting upright post is arranged in the vortex line sliding groove in a sliding manner.

The motor rotates and drives the limiting plate to rotate, so that the limiting upright post slides in the vortex line sliding groove to drive the limiting sliding block to do linear motion in the sliding groove. When the soft spacing of motor became invalid, spacing stand can stop spacing integrated circuit board to can realize stopping the hard spacing of motor, avoid the motor to stir disconnected pencil. Moreover, the nature of the spiral line sliding groove in the limiting mechanism determines that the hard limiting angle of rotation of the limiting mechanism can be larger than 360 degrees, and the larger the number of rings of the spiral line sliding groove is, the larger the rotation angle of the hard limiting mechanism can be.

Furthermore, this stop gear still includes the flange, flange and limiting plate connection, the motor shaft pass mounting panel and limiting plate in proper order and with flange joint.

Different automation equipment has different working parts connected with motors, and the connected hole sites are different. The flange can conveniently carry out the adaptation with the working part of difference, and need not go to customize the limiting plate according to the working part of difference, saves the cost.

Furthermore, the extension line direction of the sliding groove passes through the axle center of the motor shaft.

The axle center setting of spout extension line through the motor shaft ensures no matter clockwise or anticlockwise rotation of motor, and limit slide only is linear motion, and the vortex line spout can not exert the power of not parallel to the spout to spacing stand for the limiting plate can not stopped by limit slide card.

Furthermore, two end points of the vortex line chute are provided with a buffer component; the buffering component comprises a plurality of spring contact beads and buffering blocks, the spring contact beads are embedded on the side wall of the vortex line sliding groove at even intervals, and the buffering blocks are installed in the vortex line sliding groove.

The motor is stopped by soft spacing control back under inertial effect, and the motor still can continue to rotate certain angle, sets up the extreme point that buffering subassembly can effectively avoid the vortex line spout and collides with spacing stand to avoid the precision of vibration influence motor shaft. After the spring collision beads contact the limiting upright column one by one, the inertial rotating force of the motor is converted into the elastic stress of the spring and released, so that the side wall of the vortex line sliding groove is prevented from colliding with the limiting upright column.

Furthermore, the limiting mechanism also comprises an origin point induction assembly, wherein the origin point induction assembly comprises an origin point sensor and an origin point induction sheet; the original point inductor is arranged on the mounting plate, and the original point induction sheet is arranged at one end, far away from the motor shaft, of the limiting slide block.

The initial state of the motor can be ensured to be consistent by using the original point induction assembly, so that the normal production and use of the equipment are ensured.

Furthermore, the origin sensor is a photoelectric sensor, and an induction hole is formed in the origin induction sheet; the emitting head of the photoelectric sensor is aligned with the sensing hole.

Further, the induction hole is a long circular hole, and the long circular hole is arranged in parallel to the sliding groove.

The long round hole is used as an induction hole, and the state that the photoelectric sensor is aligned to the two ends of the long round hole is the initial state and the final state of the equipment respectively, so that the photoelectric sensor can adapt to various working conditions.

Furthermore, the limiting mechanism also comprises a stopping assembly, wherein the stopping assembly comprises a pressure sensor and a brake arranged on a motor shaft; the pressure-sensitive inductor is arranged on the surface of the limiting upright post; the pressure-sensitive inductor, the brake and the motor are all electrically connected with the controller.

After the soft spacing stop work of motor, the motor can continue to rotate, and spacing stand striking vortex line spout's tip, pressure-sensitive inductor sense huge pressure to with signal transmission to controller, controller control motor stop work, and the controller control stopper stops the motor, thereby guarantees that the motor can not take place to damage.

The utility model discloses following beneficial effect has:

1. the utility model discloses a vortex line spout on the limiting plate and the spacing stand's on the spacing slider cooperation carry out hard spacing to the motor, and the nature of vortex line spout has decided this stop gear can be greater than 360 to the hard spacing angle of rotation of motor, and the ring number of vortex line spout is big more, can carry out hard spacing rotation angle just big more. The problem that the wiring harness is broken due to the fact that soft limiting failure occurs when the motor rotates periodically at an angle of rotation larger than 360 degrees or more is avoided.

2. The setting of initial point response subassembly can guarantee that the motor is all unanimous at the periodic rotation's of each time initial position, guarantees the uniformity of automation equipment production.

3. Buffering subassembly and the cooperation setting that stops the subassembly make can not take place violent collision between spacing stand and the vortex line spout to guarantee that motor shaft and this stop gear can not take place to damage increase of service life.

4. The utility model discloses simple structure, compactness need not reform transform current automation equipment, very big increase stop gear's application scope, saved the expense.

Drawings

Fig. 1 is a schematic diagram of a right side overlooked three-dimensional structure of the mechanical limiting mechanism of the present invention;

fig. 2 is a schematic diagram of a right-side overlooked three-dimensional structure of the mechanical limiting mechanism of the present invention;

fig. 3 is a schematic view of the right side of the mechanical limiting mechanism of the present invention in a bottom perspective view;

fig. 4 is an explosion structure diagram of the mechanical limiting mechanism of the present invention;

FIG. 5 is an enlarged schematic view at A in FIG. 4;

fig. 6 is the schematic view of the limiting plate of the present invention.

In the figure: 1. a motor; 11. a motor shaft; 2. mounting a plate; 21. a chute; 3. a limiting plate; 31. a vortex line chute; 32. mounting holes; 4. a limiting slide block; 41. a limiting upright post; 5. a flange; 61. a spring touch bead; 62. a buffer block; 7. an origin sensing component; 71. an origin sensor; 72. an origin induction sheet; 73. an induction hole; 8. a controller; 9. a brake; 91. a pressure-sensitive sensor (91).

Detailed Description

The principles and features of the present invention will be described with reference to the drawings, which are provided for illustration only and are not intended to limit the scope of the invention.

Examples

The embodiment provides a mechanical limiting mechanism, which has the advantage that the hard limiting angle of the rotation of the motor 1 can be larger than 360 degrees, and can be better applied to the use of automatic equipment; simple structure need not reform transform current automation equipment, very big increase stop gear's application scope, guaranteed automation equipment's safety, saved the expense.

As shown in fig. 1 to 3, the mechanical limiting mechanism provided in this embodiment includes a motor 1 and an installation plate 2, and further includes: the limiting plate 3 and the limiting slide block 4; limiting plate 3 and motor 1 are located the upper and lower both sides of mounting panel 2 respectively, and motor 1's motor shaft 11 passes mounting panel 2 and limiting plate 3 in proper order, and motor shaft 11's tip passes through screwed connection with flange 5, and flange 5 is square the utility model discloses an in other embodiments, the shape of flange can be disc or oval etc.. The limiting plate 3 is provided with a mounting hole 32 for the flange 5 to pass through, and the square flange 5 is located at the mounting hole 32 and is fixedly connected with the limiting plate 3 through a bolt. The square flange 5 is convenient to be connected with other equipment components on one hand, and on the other hand, the flange 5 and the limiting plate 3 can be prevented from rotating relatively. The limiting plate 3 is circular, and the limiting plate 3 and the motor shaft 11 are coaxial. As shown in fig. 6, the surface of the limit plate 3 close to the mounting plate 2, i.e. the lower surface of the limit plate 3, is provided with a spiral line chute 31; in this embodiment, the number of the spiral lines of the spiral line chute 31 is one ring, and in other embodiments of the present invention, the number of the rings of the spiral line chute 31 may be 2, 3, 4, 5, or the like. The depth of the vortex line chute 31 is greater than one half of the thickness of the limiting plate 3 and less than two thirds of the thickness of the limiting plate 3, so that the normal use of the limiting plate 3 is ensured. The surface of the mounting plate 2 close to the limiting plate 3, namely the upper surface of the mounting plate 2 is provided with a chute 21; slide slot 21 is a T-shaped slide slot 21, and the direction of the extension line of slide slot 21 passes through the axis of motor shaft 11. The limiting slide block 4 is positioned in the slide groove 21 and is in sliding fit with the slide groove 21. As shown in fig. 4-5, a limiting column 41 is disposed on an end of the limiting slider 4 close to the motor shaft 11, and the limiting column 41 is located in the spiral sliding groove 31 and is in sliding fit with the spiral sliding groove 31. The other end of the limiting slide block 4 is connected with an original point induction sheet 72 through a screw, the original point induction sheet 72 is L-shaped, and a long round hole serving as an induction hole 73 is formed in the upper portion of the original point induction sheet 72. An origin sensor 71 is mounted at a position corresponding to the origin sensing piece 72, the origin sensor 71 is mounted on the mounting plate 2 by a bolt, and the origin sensor 71 is perpendicular to the chute 21.

As shown in fig. 6, a buffer assembly is provided at both end points of the spiral line chute 31; the buffer component comprises a spring collision bead 61 and a buffer block 62, the spring collision bead 61 is embedded on the side wall of the spiral line sliding groove 31, and the buffer block 62 is installed in the spiral line sliding groove 31. All evenly spaced on the lateral wall of every one end of vortex line spout 31 is provided with four springs and bumps 61, and four springs bump two liang a set of and relative setting of pearl 61 the utility model discloses in other embodiments, the quantity that the spring bumped pearl 61 can be 1, 2, 3, 5, 6 or 7 etc..

As shown in fig. 4-5, the controller 8 is installed above the mounting plate 2, the brake 9 is installed below the mounting plate 2, and two pressure sensors 91 are symmetrically arranged on the surface of the position-limiting upright 41. The pressure-sensitive sensor 91, the brake 9 and the motor 1 are electrically connected to the controller 8 through a wire harness, which is not shown in the drawings.

The principle of the utility model is as follows: as shown in fig. 2, before the motor 1 is turned on, the transmitting head of the origin sensor 71 is aligned with the leftmost end of the oblong hole and transmits a signal to the receiving head of the origin sensor, i.e. the starting origin; motor 1 starts, and motor 1 rotates and drives flange 5 and limiting plate 3 anticlockwise rotation, and vortex line spout 31 clockwise movement is begun to be followed to the initiating terminal of vortex line spout 31 to limiting column 41 to drive limit slider 4 and remove left, have following several kinds of states after limiting plate 3 has rotated 360:

1. the motor 1 has a soft limiting function, the limiting plate 3 has no rotation inertia, the motor shaft 11 stops rotating, and the emitting head of the origin sensor 71 is aligned to the rightmost end of the long circular hole, namely the termination origin; the limiting mechanism does not provide hard limiting for the motor 1;

2. the motor 1 stops working when the soft limiting function is performed but the limiting plate 3 has rotation inertia, but the motor shaft 11 continues to rotate, so that the limiting upright post 41 contacts the spring collision bead 61 at the end of the spiral line chute 31; at this time, the first group of spring contact balls 61 at the terminating end contact the limiting upright post 41, meanwhile, the first group of spring contact balls 61 convert the inertia power of the limiting plate 3 into elastic stress, the elastic stress is released when the limiting upright post 41 leaves, at this time, the limiting plate 3 stops rotating, and the limiting upright post 41 cannot contact the second group of spring contact balls 61; at this time, the receiving head of the origin sensor 71 cannot receive the signal of the transmitting head, and then the motor 1 is controlled to rotate clockwise to drive the limiting plate 3 to rotate, so that the limiting slide block 4 moves rightwards until the transmitting head is aligned with the rightmost end of the long circular hole, and the position where the receiving head just receives the signal of the transmitting head is the termination origin (the working state is applied when the wire rod is required to be retracted to release the stress of the wire rod in an automatic device for weaving the wire rod, particularly metal wire rods, after rotary weaving);

3. the soft limit of the motor 1 does not work, and the motor 1 continues to work to enable the motor shaft 11 to continue to rotate; the limit upright post 41 contacts the first group of spring collision beads 61 at the motion contact termination end, the limit upright post 41 continues to move and contacts the second group of spring collision beads 61, finally, the limit upright post 41 impacts the buffer block 62, and the buffer block 62 adopts a rubber block to buffer the impact force; at this time, the limit plate 3 applies a force perpendicular to the slide groove 21 to the limit column 41, and the slide groove 21 limits the limit slider 4 in the slide groove 21, thereby completing the hard limit of the motor 1. Meanwhile, the pressure sensor 91 on the limiting upright post 41 senses huge pressure transmitted from the limiting plate 3, the pressure sensor 91 transmits a signal sensing the huge pressure to the controller 8, the controller 8 controls the power supply of the motor 1 to be disconnected to stop the motor 1 to do work, the brake 9 is started at the same time, the brake 9 brakes the motor shaft 11 to stop the rotation of the motor shaft 11, and the controller 8 sends an alarm to remind a maintainer to overhaul the equipment after starting the brake 9.

The above description is only for the preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a mechanical stop gear, includes motor (1) and mounting panel (2), its characterized in that still includes: a limiting plate (3) and a limiting slide block (4); the motor (1) and the limiting plate (3) are respectively positioned at two sides of the mounting plate (2), and a motor shaft (11) of the motor (1) penetrates through the mounting plate (2) to be connected with the limiting plate (3); the surface of the limiting plate (3) close to the mounting plate (2) is provided with a vortex line chute (31); a sliding groove (21) is formed in the surface, close to the limiting plate (3), of the mounting plate (2); the limiting sliding block (4) is arranged in the sliding groove (21) in a sliding manner; the limiting slide block (4) is provided with a limiting upright post (41), and the limiting upright post (41) is arranged in the vortex line sliding groove (31) in a sliding mode.

2. The mechanical limiting mechanism according to claim 1, further comprising a flange (5), wherein the flange (5) is connected with the limiting plate (3), and the motor shaft (11) sequentially penetrates through the mounting plate (2) and the limiting plate (3) and is connected with the flange (5).

3. Mechanical stop mechanism according to claim 1, characterized in that the direction of extension of the slide groove (21) passes through the axis of the motor shaft (11).

4. Mechanical spacing mechanism according to claim 1, characterized in that at both end points of said spiral-line runner (31) there are provided buffer assemblies; buffer unit includes a plurality of spring and bumps pearl (61) and buffer block (62), a plurality of spring bump pearl (61) are evenly spaced to inlay and are established on the lateral wall of vortex line spout (31), buffer block (62) are installed in vortex line spout (31).

5. The mechanical limit mechanism according to claim 1, further comprising a home position sensing assembly (7), wherein the home position sensing assembly (7) comprises a home position sensor (71) and a home position sensing piece (72); the origin sensor (71) is arranged on the mounting plate (2), and the origin sensing piece (72) is arranged at one end, far away from the motor shaft (11), of the limiting slide block (4).

6. The mechanical limiting mechanism according to claim 5, wherein the origin sensor (71) is a photoelectric sensor, and the origin sensing piece (72) is provided with a sensing hole (73); the emitting head of the photoelectric sensor is aligned with the sensing hole (73).

7. Mechanical spacing mechanism according to claim 6, characterized in that said sensing hole (73) is an oblong hole arranged parallel to the runner (21).

8. Mechanical spacing mechanism according to claim 1, characterized in that it further comprises a stop assembly comprising a pressure-sensitive inductor (91) and a brake (9) mounted on the motor shaft (11); the pressure sensor (91) is arranged on the limiting upright post; the pressure-sensitive sensor (91) the brake (9) and the motor (1) are electrically connected with the controller (8).