Overload protection mechanism and displacement module

Abstract

The utility model relates to the field of automatic transportation, in particular to an overload protection mechanism and a displacement module. The overload protection mechanism is used for protecting the first motor. The overload protection mechanism comprises a bearing piece and a buffer spring. The bearing part is used for bearing the first motor, the first motor comprises a fixed end and a rotating shaft, the rotating shaft is connected to the fixed end and controllably rotates in the first direction relative to the fixed end, and the fixed end is rotatably connected to the bearing part around the rotating shaft and rotates in the first direction around the rotating shaft when the rotating shaft is subjected to force hindering rotation of the rotating shaft. The two ends of the buffer spring are connected to the fixed end of the first motor and the bearing piece correspondingly and used for preventing the rotating shaft from rotating in the first direction. Overload of the first motor is restrained through buffering of the buffering spring, and the first motor and a transmission structure connected to the first motor can be protected.

Description

Technical Field

[0001] The utility model relates to the field of automated transportation, in particular to an overload protection mechanism and a displacement module. Background Art

[0002] In the prior art, controlled movement of a slider driven by a motor is a fundamental design feature of automated transportation. However, during this process, the slider can occasionally become stuck due to external forces. This can cause the motor to continue operating, but the shaft to struggle to rotate. Alternatively, the shaft can continue rotating, but the transmission components cannot function. This can overload the motor or the transmission components connected to it, potentially shortening their lifespan or even damaging their structure.

[0003] Currently, to prevent overloads, sensors are often installed on the slider. When the sensor senses that the slider is stuck or reversing, the motor stops running and an alarm sounds. This method can effectively achieve the purpose of overload protection, but this design requires sufficient space to accommodate the wiring connected to the sensor, which is quite demanding. Utility Model Content

[0004] The purpose of the utility model is to provide an overload protection mechanism and a displacement module that do not require a sensor to be mounted on a slider.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0006] An overload protection mechanism is used to protect a first motor. The overload protection mechanism includes a carrier and a buffer spring. The carrier is used to support the first motor. The first motor includes a fixed end and a rotating shaft. The rotating shaft is connected to the fixed end and can be controllably rotated toward a first direction relative to the fixed end. The fixed end rotates around the rotating shaft and is connected to the carrier. When the rotating shaft is subjected to a force that hinders its rotation, the fixed end rotates around the rotating shaft toward the first direction. The two ends of the buffer spring are respectively connected to the fixed end and the carrier of the first motor, and are used to prevent the rotating shaft from rotating toward the first direction.

[0007] Optionally, the overload protection mechanism further includes a sensing plate and a first sensor, wherein the sensing plate and the first sensor are respectively connected to the fixed end of the first motor and the supporting member, and the first sensor is used to sense whether the sensing plate is located at a sensing position. When the buffer spring switches between an initial state and a force-bearing state, the sensing plate switches between being located at the sensing position and being away from the sensing position.

[0008] Optionally, the overload protection mechanism further includes an alarm, and the alarm is electrically connected to the first sensor.

[0009] In the second aspect, the utility model also provides a displacement module, including a first moving mechanism, which includes the above-mentioned overload protection mechanism and the first motor, and also includes a transmission assembly and a slider. The transmission assembly includes a driving wheel, which is connected to the rotating shaft and rotates controllably under the drive of the rotating shaft. The slider moves controllably along the second direction under the drive of the driving wheel.

[0010] Optionally, the first moving mechanism also includes a first track, the transmission assembly also includes a plurality of driven wheels and a synchronous belt, the carrier includes a support plate constructed as a plate-like structure, and the rotating shaft of the first motor passes through the support plate, the driving wheel cooperates with the synchronous belt, and is rotatably connected to the side of the support plate away from the fixed end of the first motor, and the plurality of driven wheels are rotatably connected to the support plate, and the synchronous belt bypasses the driving wheel and the driven wheels, so that part of the synchronous belt forms a conveyor belt segment parallel to the second direction, the first track cooperates with the conveyor belt segment, and the slider is fixedly connected to any position of the conveyor belt segment and is slidably connected to the first track.

[0011] Optionally, the driven wheel includes a moving wheel, the moving wheel is away from the conveyor belt segment, and the position of the driven wheel is controllably movable for tensioning the synchronous belt.

[0012] Optionally, the first moving mechanism further includes a second sensor provided on the support plate, and the second sensor is used to sense that the slider reaches an initial position on the first track.

[0013] Optionally, the first motor and the support plate are connected via a first bearing.

[0014] Optionally, the displacement module also includes a second moving mechanism, which includes a fixed frame, a second motor arranged on the fixed frame, a screw extending along a third direction, a slide seat mounted on the screw, a second track arranged on the fixed frame, and a movable base slidably connected to the second track. The screw rotates controllably under the drive of the second motor, the second track is parallel to the screw, and the movable base is connected to the slide seat and the supporting member. Driven by the second motor, it moves along the third direction at any time when the screw rotates.

[0015] Optionally, the second moving mechanism further includes a third sensor and a fourth sensor provided on the fixed frame, the third sensor being used to sense that the moving base has reached the head end position, and the fourth sensor being used to sense that the moving base has reached the tail end position.

[0016] According to a first aspect of the present invention, when the rotating shaft of the first motor rotates normally, the force applied by the rotating shaft to the fixed end is less than the initial tension of the buffer spring. At this point, the fixed end of the first motor is balanced by the force of the buffer spring and does not rotate. When the rotation of the rotating shaft of the first motor is hindered by an external force, the reaction force applied by the rotating shaft to the fixed end increases to a value greater than the initial tension of the buffer spring. At this point, the buffer spring is under stress, and the fixed end of the first motor rotates while the buffer spring elastically deforms, thereby providing a buffering effect and preventing overload on the first motor or the transmission structure connected to the first motor. This buffering provides protection when a jam occurs, avoiding the mechanical burden caused by an instantaneous overload. Furthermore, the overall structure is simple and low-cost, eliminating the need for sensors on the slider and eliminating the difficulty of wiring. Furthermore, in the event of a temporary jam that is self-consistent, the buffer spring automatically resets the fixed end of the first motor, allowing the mechanism to continue operating without manual restart. Therefore, the sensitivity of this mechanism is wide, making it suitable for both temporary and severe jams.

[0017] Furthermore, the rotation of the fixed end of the first motor drives the induction plate to move, thereby changing the sensing condition of the corresponding first sensor. It has the advantages of simple structure and high sensitivity, and can sense changes in operating status, such as whether it is a temporary jam that causes automatic reset.

[0018] According to the second aspect of the present invention, an overload protection mechanism is installed in the displacement module, which helps the module to operate smoothly and prolong the service life of the module.

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the displacement module shown in the first embodiment of the present utility model;

[0021] Figure 2 This is a structural schematic diagram of the displacement module shown in Example 1 of the present utility model with the protective cover removed.

[0022] Legend: 1-first moving mechanism, 11-first motor, 111-fixed end, 112-rotating shaft, 12-overload protection mechanism, 121-carrying member, 1211-support plate, 1212-bearing plate, 1213-connecting part, 122-perforated plate, 123-column, 124-buffer spring, 125-first bearing, 126-sensing plate, 127-first sensor, 13-transmission assembly, 131-driving wheel, 1 32-driven wheel, 133-synchronous belt, 134-moving wheel, 135-moving column, 14-first track, 15-slider, 16-second sensor, 2-second moving mechanism, 21-fixed frame, 22-second motor, 23-screw, 24-slide, 25-second track, 26-moving base, 261-moving plate, 27-third sensor, 28-fourth sensor, 29-limiting plate, 3-push-pull hook, 4-protective cover. DETAILED DESCRIPTION

[0023] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0026] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] See Figure 1 and Figure 2 The overload protection mechanism 12 protected by the present utility model application is used to protect the first motor 11. The overload protection mechanism 12 includes a carrier 121 and a buffer spring 124. The carrier 121 is used to support the first motor 11, and the first motor 11 includes a fixed end 111 and a rotating shaft 112. The rotating shaft 112 is connected to the fixed end 111 and can be controllably rotated toward a first direction relative to the fixed end 111. The fixed end 111 rotates around the rotating shaft 112 and is connected to the carrier 121. When the rotating shaft 112 is subjected to a force that hinders its rotation, the fixed end 111 rotates around the rotating shaft 112 toward the first direction. The two ends of the buffer spring 124 are respectively connected to the fixed end 111 and the carrier 121 of the first motor 11, and are used to prevent the rotating shaft 112 from rotating toward the first direction.

[0028] When the rotating shaft 112 of the first motor 11 rotates normally, the force applied by the rotating shaft 112 of the first motor 11 to the fixed end 111 is less than the initial tension of the buffer spring 124. At this time, the fixed end 111 of the first motor 11 is balanced by the force of the buffer spring 124 and does not rotate. When the rotation of the rotating shaft 112 of the first motor 11 is hindered by an external force, the reaction force applied by the rotating shaft 112 of the first motor 11 to the fixed end 111 increases to a value greater than the initial tension of the buffer spring 124. At this time, the buffer spring 124 is under stress. When the fixed end 111 of the first motor 11 rotates, the buffer spring 124 is stretched, thereby acting as a buffer to prevent the first motor 11 or the transmission structure connected to the first motor 11 from overloading. This provides protection through buffering at the same time as a jam occurs, avoiding the mechanical burden caused by an instantaneous overload. The overall structure is simple and low-cost, and there is no need to carry a sensor on the slider 15, eliminating the difficulty of wiring. In addition, when a temporary jam occurs that can be self-consistent, the buffer spring 124 can automatically drive the fixed end 111 of the first motor 11 to reset, so that the mechanism continues to run without manual restart. Therefore, the sensitivity of this mechanism has a large range and can be used for both temporary jams and severe jams.

[0029] Please refer to the following examples for details.

[0030] Example 1:

[0031] See Figure 1 and Figure 2 The displacement module shown in a preferred embodiment of the present application includes a first moving mechanism 1, a second moving mechanism 2, and a push-pull hook 3. The first moving mechanism 1 is connected to the second moving mechanism 2 and is controllably movable along a third vertical direction driven by the second moving mechanism 2; the push-pull hook 3 is connected to the first moving mechanism 1 and is controllably movable along a second horizontal direction driven by the first moving mechanism 1.

[0032] The first moving mechanism 1 includes a first motor 11, an overload protection mechanism 12, a transmission assembly 13, a first rail 14, and a slider 15. The first rail 14 is arranged along a second horizontal direction. The transmission assembly 13 transmits power provided by the first motor 11 to the slider 15, causing the slider 15 to move along the first rail 14 relative to the support member 121. The overload protection mechanism 12 is connected to the first motor 11 to prevent overload of the first motor 11 or the transmission assembly 13 due to obstruction of the movement of the slider 15.

[0033] The overload protection mechanism 12 includes a bearing member 121, a buffer spring 124 and a first bearing 125. The bearing member 121 includes a support plate 1211, a bearing plate 1212 and a connecting portion 1213. The support plate 1211 is a horizontally arranged plate-like structure, and the bearing plate 1212 is horizontally arranged above the support plate 1211 and is located close to the edge of the support plate 1211. A through hole with a relatively opposite position and the same structure is respectively provided on the support plate 1211 and the bearing plate 1212. The vertically arranged connecting portion 1213 is connected between the support plate 1211 and the bearing plate 1212, and is used to support and fix the bearing plate 1212. The first motor 11 is a double-shaft motor, including a fixed end 111 and a rotating shaft 112 that are connected to each other. The rotating shaft 112 is vertically arranged, passes through the fixed end 111 and extends from the top and bottom of the fixed end 111, and passes through the through holes on the support plate 1211 and the bearing plate 1212 respectively. The two ends of the fixed end 111 are respectively connected to two first bearings 125 coaxial with the rotating shaft 112, and the two first bearings 125 are respectively embedded in the through holes on the support plate 1211 and the bearing plate 1212 of the carrier 121. The first bearing 125 is a ball bearing. At this time, the fixed end 111 of the first motor 11 is rotatably connected to the carrier 121, and the rotating shaft 112 of the first motor 11 is controllably rotated toward the first direction relative to the fixed end 111. A perforated plate 122 extends laterally from the bottom of the fixed end 111 of the first motor 11, and a vertically arranged column 13 is fixedly connected above the support plate 1211. The two ends of the buffer spring 124 are detachably connected to the column 13 and the perforated plate 122 by hooks, which facilitates the replacement of the buffer spring 124. In this embodiment, the buffer spring 124 is a tension spring and is arranged adjacent to the connecting portion 1213 of the carrier 121. When the rotating shaft 112 of the first motor 11 rotates in the first direction relative to the support plate 1211, the buffer spring 124 prevents the fixed end 111 from rotating relative to the support plate 1211, causing the fixed end 111 to be in a force-balanced state and remain stationary. When the rotating shaft 112 of the first motor 11 is prevented from rotating relative to the support plate 1211, the fixed end 111 rotates in the first direction relative to the support plate 1211. At this time, the perforated plate 122 moves away from the column 13, and the buffer spring 124 extends, switching from the initial state to the force-bearing state, thereby preventing the first motor 11 from overloading through the buffering effect. The side of the perforated plate 122 close to the column 13 contacts the connecting portion 1213 of the support member 121, which helps prevent the fixed end 111 of the first motor 11 from excessive rotation when the buffer spring 124 is reset.

[0034] The overload protection mechanism 12 also includes a sensing plate 126 and a first sensor 127. The sensing plate 126 is connected to the perforated plate 122. The first sensor 127 is fixedly connected to the connection portion 1213 of the support member 121 and is located above the middle portion of the buffer spring 124. When the buffer spring 124 is in its initial state, the sensing plate 126 is located at the sensing position of the first sensor 127. When the buffer spring 124 is stressed and stretched, the sensing plate 126 moves with the rotation of the fixed end 111 of the first motor 11, away from the sensing position of the first sensor 127. The operating status of the first moving mechanism 1 is determined by changes in the sensing status of the first sensor 127.

[0035] In this embodiment, the overload protection mechanism 12 further includes an alarm, which is an audible and visual alarm electrically connected to the first sensor 127 through a controller, for indicating changes in the sensing condition of the first sensor 127 .

[0036] The transmission assembly 13 includes a driving wheel 131, two driven wheels 132 and a synchronous belt 133. The driving wheel 131 is fixedly connected to the rotating shaft 112 of the first motor 11, rotates coaxially with the rotating shaft 112, and is arranged on the side of the support plate 1211 away from the fixed end 111 of the first motor 11. The two driven wheels 132 are at the same height as the driving wheel 131, and the two driven wheels 132 are arranged along the second direction, and the driving wheel 131 is arranged to the side of the line connecting the two driven wheels 132. The structures of the two driven wheels 132 and the driving wheel 131 are both coordinated with the synchronous belt 133, and the synchronous belt 133 surrounds the two driven wheels 132 and the driving wheel 131 and is tensioned, so that the portion of the synchronous belt 133 between the two driven wheels 132 away from the driving wheel 131 forms a conveyor belt section parallel to the second direction.

[0037] The transmission assembly 13 also includes a moving wheel 134. The height of the moving wheel 134 matches that of the driving wheel 131 and is rotatably connected to a vertically mounted moving post 135. The moving wheel 134 is positioned on the side of the two driven wheels 132 that is closest to the driving wheel 131 and abuts against the outside of the timing belt 133. The moving post 135 passes through a slot in the support plate 1211 and is securely connected to the support plate 1211. The position of the moving post 135 within the slot is adjustable. By bringing the moving wheel 134 closer to the conveyor belt segment, the timing belt 133 is tensioned.

[0038] The side of the slider 15 is fixedly connected to any position on the conveyor belt segment, allowing the slider 15 to move in the second direction under the drive of the first motor 11. The first track 14 is arranged on the support plate 1211 parallel to the second direction. The slider 15 is slidably connected to the first track 14 near the side of the support plate 1211. The first track 14 is used to constrain the movement direction of the slider 15 and prevent it from derailing.

[0039] The first moving mechanism 1 further includes a second sensor 16 . The second sensor 16 is disposed on the support plate 1211 and is configured to sense when the slider 15 reaches an initial position on the first track 14 , thereby controlling the travel of the slider 15 .

[0040] The second mobile mechanism 2 includes a fixed frame 21, a second motor 22, a screw 23 extending in a third direction, a slide 24 mounted on the screw 23, a second track 25 mounted on the fixed frame 21, and a mobile base 26 slidably connected to the second track 25. The third direction is a vertical direction. The fixed frame 21 is vertically arranged. The second motor 22 is fixedly connected to the side of the fixed frame 21 and drives the vertical screw 23 to rotate in a controllable manner. The inner wall of the slide 24 is formed with threads that mate with the screw 23. The mobile base 26 is fixedly connected to the slide 24 and slidably connected to the vertical second track 25. The second track 25 constrains the mobile base 26 from rotating. The immobilized slide 24 moves in the vertical direction as the screw 23 rotates, causing the mobile base 26 to move in a controllable vertical direction. The mobile base 26 is fixedly connected to the support member 121, thereby driving the first mobile mechanism 1 to be raised or lowered as a whole.

[0041] The second moving mechanism 2 further includes a third sensor 27 and a fourth sensor 28 mounted on the fixed frame 21. Both the third sensor 27 and the fourth sensor 28 are through-beam photoelectric sensors. A moving plate 261 fixedly connected to the moving base 26 moves between a position corresponding to the third sensor 27 and a position corresponding to the fourth sensor 28. The third sensor 27 is used to sense when the moving base 26 has reached the head end position, and the fourth sensor 28 is used to sense when the moving base 26 has reached the tail end position.

[0042] The second moving mechanism 2 further includes a limit plate 29 connected to the bottom of the fixing frame 21. When the moving base 26 moves to the lowest position, the upper surface of the limit plate 29 abuts against the bottom of the moving base 26 to prevent the moving base 26 from derailing and falling.

[0043] The push-pull hook 3 includes two mutually separated right-angle structures and is fixedly connected to the movable block. Its vertical edge is fixedly connected to the bottom of the sliding block, and the horizontal edge is bent upward at one end away from the vertical edge to form a hook-shaped structure for pushing and pulling workpieces.

[0044] The displacement module in this embodiment further includes a bottom-opening protective cover 4. The protective cover 4 is constructed as a ventilated mesh structure. The protective cover 4 is fixedly connected to the fixing frame 21 and is sleeved on the second moving mechanism 2 to protect and fix the second moving mechanism 2.

[0045] Example 2:

[0046] This embodiment differs from the first embodiment only in that two buffer springs 124 and two first sensors 127 are provided, and structures such as the perforated plate 122 connected to the fixed end 111 of the first motor 11 do not interfere with the connection portion 1213 of the support member 121. When the rotation of the rotating shaft 112 of the first motor 11 in the first direction is blocked, the fixed end 111 of the first motor 11 rotates in the first direction, one buffer spring 124 deforms, and the sensing plate 126 reaches the sensing position of one first sensor 127. When the rotation of the rotating shaft 112 of the first motor 11 in the direction opposite to the first direction is blocked, the fixed end 111 of the first motor 11 rotates in the direction opposite to the first direction, the other buffer spring 124 deforms, and the sensing plate 126 reaches the sensing position of the other first sensor 127.

[0047] The beneficial effects of the present invention are that it can provide overload protection for the first motor 11 and the transmission assembly 13 and send out signals in a timely manner.

[0048] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. An overload protection mechanism, characterized in that: The overload protection mechanism (12) is used to protect a first motor (11). The overload protection mechanism (12) comprises a bearing member (121) and a buffer spring (124). The bearing member (121) is used to bear the first motor (11). The first motor (11) comprises a fixed end (111) and a rotating shaft (112). The rotating shaft (112) is connected to the fixed end (111) and controllably rotates toward a first direction relative to the fixed end (111). The fixed end (111) is connected to the bearing member (121) in a rotational manner around the rotating shaft (112). When the rotating shaft (112) is subjected to a force that hinders its rotation, the fixed end (111) rotates toward the first direction around the rotating shaft (112). The two ends of the buffer spring (124) are respectively connected to the fixed end (111) of the first motor (11) and the bearing member (121), and are used to prevent the rotating shaft (112) from rotating toward the first direction.

2. The overload protection mechanism according to claim 1, characterized in that: The invention also includes a sensing plate (126) and a first sensor (127), wherein the sensing plate (126) and the first sensor (127) are respectively connected to the fixed end (111) of the first motor (11) and the bearing member (121), and the first sensor (127) is used to sense whether the sensing plate (126) is located at a sensing position, and when the buffer spring (124) switches between an initial state and a force-bearing state, the sensing plate (126) switches between a state of being located at the sensing position and a state of being away from the sensing position.

3. The overload protection mechanism according to claim 2, characterized in that: It also includes an alarm, which is electrically connected to the first sensor (127).

4. A displacement module, characterized in that: The invention comprises a first moving mechanism (1), wherein the first moving mechanism (1) comprises the overload protection mechanism (12) according to any one of claims 1 to 3 and the first motor (11), and further comprises a transmission assembly (13) and a slider (15), wherein the transmission assembly (13) comprises a driving wheel (131), wherein the driving wheel (131) is connected to the rotating shaft (112) and is controllably rotated under the drive of the rotating shaft (112), and the slider (15) is controllably moved along a second direction under the drive of the driving wheel (131).

5. The displacement module according to claim 4, wherein: The first moving mechanism (1) further comprises a first track (14), the transmission assembly (13) further comprises a plurality of driven wheels (132) and a synchronous belt (133), the bearing member (121) comprises a support plate (1211) configured as a plate-like structure, and the rotating shaft (112) of the first motor (11) passes through the support plate (1211), the driving wheel (131) is engaged with the synchronous belt (133), and is rotatably connected to the support plate (1211) away from the first motor ( 11), a plurality of driven wheels (132) are rotatably connected to the support plate (1211), a synchronous belt (133) passes around the driving wheel (131) and the driven wheel (132), so that part of the synchronous belt (133) forms a conveyor belt segment parallel to the second direction, the first track (14) is matched with the conveyor belt segment, and the slider (15) is fixedly connected to any position of the conveyor belt segment and is slidably connected to the first track (14).

6. The displacement module according to claim 5, wherein: The first moving mechanism (1) further comprises a moving wheel (134), the moving wheel (134) abutting against the synchronous belt (133) and being away from the conveyor belt section, the driven wheel (132) being rotatably connected to the support plate (1211) and being positionally controllably movable, for tensioning the synchronous belt (133).

7. The displacement module according to claim 5, wherein: The first moving mechanism (1) further comprises a second sensor (16) arranged on the support plate (1211), the second sensor (16) being used to sense the slider (15) reaching an initial position on the first track (14).

8. The displacement module according to claim 5, wherein: The first motor (11) and the support plate (1211) are connected via a first bearing (125).

9. The displacement module according to claim 5, wherein: The invention also includes a second moving mechanism (2), which includes a fixed frame (21), a second motor (22) arranged on the fixed frame (21), a screw (23) extending along a third direction, a slide (24) sleeved on the screw (23), a second track (25) arranged on the fixed frame (21), and a moving base (26) slidably connected to the second track (25), wherein the screw (23) is controllably rotated under the drive of the second motor (22), the second track (25) is parallel to the screw (23), the moving base (26) is connected to the slide (24) and the bearing member (121), and moves along the third direction at any time when the screw (23) rotates under the drive of the second motor (22).

10. The displacement module according to claim 9, wherein: The second moving mechanism (2) further comprises a third sensor (27) and a fourth sensor (28) arranged on the fixed frame (21), wherein the third sensor (27) is used to sense when the moving base (26) reaches the head end position, and the fourth sensor (28) is used to sense when the moving base (26) reaches the tail end position.

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