Rotation stopping mechanism of linear stepping motor

Abstract

The utility model discloses a rotation stopping mechanism of a linear stepping motor, which comprises the linear stepping motor, the output end of the linear stepping motor is provided with a rotating shaft, the rotating shaft is sleeved with a sleeve, one end of the sleeve is fixedly connected with a movable plate, and the linear stepping motor is provided with a movement driving mechanism used for driving the movable plate to move horizontally. A baffle is fixed to the rotating shaft, and a plurality of stop rods are fixed to one end of the sleeve and used for limiting and stopping when the baffle rotates. The utility model relates to the technical field of linear stepping motors, in particular to a rotation stopping mechanism of a linear stepping motor, and solves the problems that when an existing rotation stopping mechanism of a linear stepping motor stops rotation and limits a lead screw through a flat wire and a rotation stopping shell, the limiting effect is poor, the rotation stopping effect is poor, and the rotation stopping effect is poor. The response rate is low, and rapid rotation stopping and limiting cannot be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of linear stepping motors, in particular to a rotation-stopping mechanism of a linear stepping motor. Background Art

[0002] At present, when a linear stepper motor needs to stop during operation, after receiving a stop pulse signal, it cannot stop immediately due to the previous torque and needs to wait for a while. Therefore, some anti-rotation mechanisms have emerged in the market. However, the existing anti-rotation mechanisms are relatively complex in design, have poor movement stability, are easily damaged, and have high production costs, making them unsuitable for promotion and use.

[0003] In order to solve the above problems, patent CN213367607U discloses a linear stepper motor with a stop mechanism, which stops and limits the screw by means of a flat wire arranged at the front end of the screw and a stop shell arranged on the front end cover, so that the screw moves back and forth when the motor is running; the stepper motor with this structure has a compact structure, good stability, high precision, simplifies the installation process, reduces the cost of motor installation, and makes it convenient for users to use.

[0004] However, the following defects and shortcomings exist in the implementation process: when the screw is stopped and limited by flat wire and stop shell, the limiting effect is not good, the response rate is slow, and rapid stopping and limiting cannot be achieved. Therefore, we propose a stop mechanism for a linear stepper motor. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a linear stepper motor anti-rotation mechanism, which solves the problem that the existing linear stepper motor anti-rotation mechanism uses a flat wire and a anti-rotation shell to stop and limit the screw, but the limiting effect is poor, the response rate is slow, and rapid stopping and limiting cannot be achieved.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a linear stepper motor anti-rotation mechanism, including a linear stepper motor, the output end of the linear stepper motor is equipped with a rotating shaft, a sleeve is sleeved on the rotating shaft, one end of the sleeve is fixedly connected to a movable plate, and the linear stepper motor is provided with a moving drive mechanism for driving the movable plate to move horizontally;

[0007] A baffle is fixed on the rotating shaft, and a plurality of stop rods are fixed on one end of the sleeve for limiting the position when the baffle rotates;

[0008] A friction plate is fixed at one end of the sleeve for contacting and rubbing with the baffle to brake the baffle.

[0009] Preferably, the mobile driving mechanism includes a bearing seat fixed on the linear stepping motor and a threaded sleeve on the movable plate, a screw rod is rotatably mounted on the bearing seat, the screw rod is threadedly connected to the threaded sleeve, the screw rod is driven to rotate by the driving mechanism, and a limiting component for moving the movable plate is provided on the linear stepping motor.

[0010] Preferably, the driving mechanism comprises a driven gear fixed to one end of the screw rod, one side of the driven gear is meshingly connected with a driving gear, the driving gear is fixed to the output end of the motor, and the motor is fixed on the linear stepping motor.

[0011] Preferably, the limiting assembly comprises limiting holes penetrating through the four corners of the linear stepping motor and limiting rods fixed at the four corners of the movable plate, and the limiting rods are movably inserted in the limiting holes.

[0012] Preferably, a plurality of the stop rods are equiangularly distributed on one end of the sleeve, and the corners of the stop rods are all processed with arc transitions.

[0013] Preferably, the baffle is made of metal and the edges and corners are processed with arc transition.

[0014] Preferably, a controller is fixed on the linear stepper motor, and the linear stepper motor and the motor are electrically connected to the controller via wires respectively.

[0015] Beneficial Effects

[0016] The utility model provides a rotation-stopping mechanism for a linear stepping motor. Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. A linear stepper motor has a rotation-stopping mechanism, a sleeve is sleeved on the rotating shaft, the sleeve can be moved horizontally by a mobile driving mechanism, the mobile driving mechanism includes a bearing seat, a screw, etc., a baffle is fixed on the rotating shaft, and a plurality of stop rods are fixed on the sleeve, so that when the linear stepper motor needs to stop during operation, after receiving a stop pulse signal, the rotating shaft stops rotating, the motor starts, and the mobile driving mechanism is used to drive the sleeve to move forward, driving the stop rod to move forward to stop the baffle through the stop rod, thereby realizing the rotation-stopping and limiting of the rotating shaft, so that the rotating shaft stops rotating; the linear stepper motor stop structure with this structure has a fast stopping response speed and a good stopping and limiting effect, so that the user is convenient to use.

[0018] 2. The anti-rotation mechanism of this linear stepper motor is also equipped with a friction plate at the front end of the sleeve. When the sleeve moves forward and drives the baffle forward, it also drives the friction plate forward at the same time. The contact between the friction plate and the baffle surface can brake the baffle through friction, so that the rotating shaft can stop rotating quickly, further improving the response speed of the rotating shaft stop, and achieving rapid rotation stopping and limiting of the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model from a third viewing angle;

[0022] Figure 4 For this utility model Figure 3 Schematic diagram of the partially enlarged structure.

[0023] In the figure: 1. linear stepper motor; 2. rotating shaft; 3. sleeve; 4. movable plate; 5. mobile driving mechanism; 51. bearing seat; 52. screw rod; 53. threaded sleeve; 54. driving mechanism; 541. driven gear; 542. driving gear; 543. motor; 55. limit assembly; 551. limit hole; 552. limit rod; 6. stop rod; 7. friction plate; 8. baffle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 , the utility model provides two technical solutions:

[0026] Embodiment 1:

[0027] A linear stepper motor anti-rotation mechanism comprises a linear stepper motor 1, a rotating shaft 2 is mounted on the output end of the linear stepper motor 1, a sleeve 3 is sleeved on the rotating shaft 2, a movable plate 4 is fixedly connected to one end of the sleeve 3, and a moving driving mechanism 5 is arranged on the linear stepper motor 1 for driving the movable plate 4 to move horizontally;

[0028] A baffle 8 is fixed on the rotating shaft 2, and a plurality of stop rods 6 are fixed on one end of the sleeve 3 for limiting the position of the baffle 8 when it rotates;

[0029] A friction plate 7 is fixed at one end of the sleeve 3 for contacting and rubbing with the baffle plate 8 to brake the baffle plate 8 .

[0030] Embodiment 2:

[0031] The main difference from the first embodiment is:

[0032] A rotation-stopping mechanism for a linear stepper motor, wherein a mobile driving mechanism 5 comprises a bearing seat 51 fixed on the linear stepper motor 1 and a threaded sleeve 53 on a movable plate 4, a screw rod 52 is rotatably mounted on the bearing seat 51, the screw rod 52 is threadedly connected with the threaded sleeve 53, the screw rod 52 is driven to rotate by a driving mechanism 54, a limiting assembly 55 for the movable plate 4 to move is provided on the linear stepper motor 1, the screw rod 52 rotates, and the threaded sleeve 53 is driven to move horizontally by the threaded transmission between the screw rod 52 and the threaded sleeve 53, thereby driving the movable plate 4 to move horizontally, thereby driving the sleeve 3 to move horizontally; the driving mechanism 54 comprises a driven gear 541 fixed at one end of the screw rod 52, one side of the driven gear 541 is meshingly connected with a driving gear 542, the driving gear 542 is fixed at the output end of the motor 543, the motor 543 is fixed on the linear stepper motor 1, and the motor 543 is started to drive the driven gear 541 to move horizontally. The driven gear 542 rotates, and the driven gear 541 is driven to rotate by meshing transmission with the driving gear 542 and the driven gear 541, thereby driving the screw rod 52 to rotate; the limiting component 55 includes limiting holes 551 that are penetrated through the four corners of the linear stepping motor 1 and limiting rods 552 fixed at the four corners of the movable plate 4, the limiting rods 552 are movably inserted in the limiting holes 551, and the limiting rods 552 are movably inserted in the limiting holes 551 to limit the movable plate 4 when it moves, so as to ensure that it does not deviate during movement; multiple stop rods 6 are distributed at equal angles on one end of the sleeve 3, and the corners of the stop rods 6 are all treated with arc transitions, and the baffle 8 is stopped by the stop rods 6, and the arc transition treatment reduces the wear of the stop rods 6 when they are in contact with the baffle 8; the baffle 8 is made of metal and the corners are treated with arc transitions, and the arc transition treatment reduces the wear of the stop rods 6 when they are in contact with the baffle 8.

[0033] When the anti-rotation mechanism of the linear stepper motor is in use, the linear stepper motor 1 drives the rotating shaft 2 to rotate, and a sleeve 3 is mounted on the rotating shaft 2. The sleeve 3 can be moved horizontally by the mobile driving mechanism 5. The mobile driving mechanism 5 includes a bearing seat 51, a screw rod 52, etc. A baffle 8 is fixed on the rotating shaft 2, and a plurality of stop rods 6 are fixed on the sleeve 3. Then, when the linear stepper motor 1 needs to stop during operation, the controller controls the linear stepper motor 1 to be turned off. After the linear stepper motor 1 receives the stop pulse signal, the rotating shaft 2 stops rotating, and the motor 543 is started by the controller, and the mobile driving mechanism 5 is used to drive the sleeve 3 to move forward, driving the stop rod 6. The rod 6 moves forward to stop the baffle 8 through the stop rod 6, thereby achieving the stopping and limiting of the rotating shaft 2, so that the rotating shaft 2 stops rotating; the linear stepping motor 1 stop structure with this structure has a fast stopping response speed and a good stopping and limiting effect, which makes it convenient for users to use; a friction plate 7 is also installed at the front end of the sleeve 3. When the baffle 8 moves forward by the forward movement of the sleeve 3, the friction plate 7 is also driven forward at the same time. The contact between the friction plate 7 and the surface of the baffle 8 can brake the baffle 8 through friction, so that the rotating shaft 2 can stop rotating quickly, further improving the response speed of the stop of the rotating shaft 2, and achieving rapid stopping and limiting of the rotating shaft 2.

[0034] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A linear stepper motor anti-rotation mechanism, comprising a linear stepper motor (1), wherein a rotating shaft (2) is mounted on the output end of the linear stepper motor (1), and characterized in that: The rotating shaft (2) is sleeved with a sleeve (3), one end of the sleeve (3) is fixedly connected to a movable plate (4), and the linear stepping motor (1) is provided with a moving driving mechanism (5) for driving the movable plate (4) to move horizontally; A baffle (8) is fixed on the rotating shaft (2), and a plurality of stop rods (6) are fixed on one end of the sleeve (3) for limiting the position of the baffle (8) when it rotates; A friction plate (7) is fixed to one end of the sleeve (3) and is used for contacting and rubbing with the baffle plate (8) to brake the baffle plate (8).

2. The anti-rotation mechanism of a linear stepping motor according to claim 1, characterized in that: The mobile drive mechanism (5) comprises a bearing seat (51) fixed on the linear stepping motor (1) and a threaded sleeve (53) on the movable plate (4); a screw rod (52) is rotatably mounted on the bearing seat (51); the screw rod (52) is threadedly connected to the threaded sleeve (53); the screw rod (52) is driven to rotate by a driving mechanism (54); and a limit assembly (55) is provided on the linear stepping motor (1) for the movable plate (4) to move.

3. The anti-rotation mechanism of a linear stepping motor according to claim 2, characterized in that: The driving mechanism (54) comprises a driven gear (541) fixed to one end of the lead screw (52); one side of the driven gear (541) is meshingly connected to a driving gear (542); the driving gear (542) is fixed to the output end of a motor (543); and the motor (543) is fixed to the linear stepping motor (1).

4. The anti-rotation mechanism of a linear stepping motor according to claim 2, characterized in that: The limiting assembly (55) comprises limiting holes (551) extending through the four corners of the linear stepping motor (1) and limiting rods (552) fixed at the four corners of the movable plate (4); the limiting rods (552) are movably inserted into the limiting holes (551).

5. The anti-rotation mechanism of a linear stepping motor according to claim 1, characterized in that: A plurality of the stop rods (6) are distributed at equal angles and circumferentially at one end of the sleeve (3), and the corners of the stop rods (6) are all processed with arc transitions.

6. The anti-rotation mechanism of a linear stepper motor according to claim 1, characterized in that: The baffle (8) is made of metal and has arc transition treatment at its edges and corners.

7. The anti-rotation mechanism of a linear stepping motor according to claim 3, characterized in that: A controller is fixed on the linear stepper motor (1), and the linear stepper motor (1) and the motor (543) are electrically connected to the controller via wires.

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