Limiting mechanism

Abstract

The utility model discloses a limiting mechanism which comprises an installation base, two first limiting components, a second limiting component and a third limiting component, the limiting mechanism comprises an installation base, two first limiting components, a second limiting component and a third limiting component, and a tray is arranged in the middle of the installation base; the two first limiting parts are connected with the mounting base and are arranged in a first direction; the second limiting component is connected with the mounting base and is arranged in a second direction; the third limiting component is connected with the mounting base and is arranged in the second direction; wherein the first direction is perpendicular to the second direction, the two first limiting components are arranged on the two sides of the tray in the first direction respectively, and the second limiting component and the third limiting component are arranged on the two sides of the tray in the second direction. The technical defect that a traditional limiting mechanism cannot provide fixation in multiple directions, so that an object moves in an unlimited direction, and the positioning precision of the object is affected is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a limiting mechanism. Background Art

[0002] In the field of automated machinery and precision engineering, it is a common requirement to accurately position objects and limit their movement. This usually involves the use of limit mechanisms to ensure the stability and accuracy of mechanical parts or products during processing, transportation or assembly. Traditional limit mechanism designs often rely on simple mechanical fixing methods such as slots, blocks or bolt fastening, which can meet basic positioning needs to a certain extent. However, with the improvement of industrial automation levels and the increase in precision requirements, these traditional methods have begun to show limitations.

[0003] When subjected to forces in multiple directions, traditional mechanical fixing methods cannot provide fixation in multiple directions, causing the object to move in unrestricted directions, affecting its positioning accuracy and affecting subsequent production processes. Utility Model Content

[0004] In order to overcome the above technical defects, the utility model provides a limiting mechanism.

[0005] In order to solve the above problems, the utility model is implemented according to the following technical solutions:

[0006] The utility model provides a limiting mechanism, the limiting mechanism comprises a mounting base, two first limiting components, a second limiting component and a third limiting component, the middle part of the mounting base is provided with a tray; two first limiting components are connected to the mounting base, and the two first limiting components are arranged in a first direction; the second limiting component is connected to the mounting base, and the second limiting component is arranged in a second direction; the third limiting component is connected to the mounting base, and the third limiting component is arranged in the second direction;

[0007] Among them, the first direction and the second direction are perpendicular to each other, the two first limiting components are respectively arranged on both sides of the tray in the first direction, the second limiting component is arranged on one side of the tray in the second direction, and the third limiting component is arranged on the side of the tray in the second direction away from the second limiting component.

[0008] Preferably, two conveying components are further provided on the mounting base, and the two first limiting components are connected to the mounting base via the two conveying components.

[0009] Preferably, the first limiting component comprises a limiting block and a first limiting seat, and the limiting block is connected to the first limiting seat.

[0010] Preferably, a slot is provided on the limit block; a push rod is provided on the first limit seat, a clamping head is provided at one end of the push rod, and the clamping head on the push rod is adapted to be embedded in the slot of the limit block; wherein, the first limit component has a limit state and a standby state, and the first limit seat drives the limit block to move through the push rod to switch the limit state and the standby state.

[0011] Preferably, a plurality of guide rods are provided on the limit block; a plurality of guide holes are provided on the first limit seat, and the plurality of guide holes penetrate the first limit seat; and the plurality of guide rods are correspondingly adapted and inserted into the plurality of guide holes.

[0012] Preferably, the second limiting component includes a stopper and a second limiting seat, and the stopper is movably connected to the second limiting seat.

[0013] Preferably, the stopper is provided with a connecting shaft in the middle, and the stopper is connected to the second limit seat via the connecting shaft; wherein the stopper can swing along the connecting shaft.

[0014] Preferably, the stopper has a guide surface and a limiting surface for limiting the target object, and the guide surface is inclined relative to the limiting surface; the stopper is rotatably arranged relative to the second limiting seat to have a limiting position and an avoidance position.

[0015] Preferably, the third limiting component includes a stop block and a third limiting seat, and the stop block is movably connected to the third limiting seat; the stop block and the third limiting seat are connected by a connecting rod, and the stop block can move up and down relative to the third limiting seat.

[0016] Preferably, a motor is also provided on the mounting base, and the first limiting component and the third limiting component are respectively connected to the motor.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a limiting mechanism, which includes a mounting base, two first limiting components, a second limiting component and a third limiting component, and a tray is arranged in the middle of the mounting base; two first limiting components are connected to the mounting base, and the two first limiting components are arranged in the first direction; the second limiting component is connected to the mounting base, and the second limiting component is arranged in the second direction; the third limiting component is connected to the mounting base, and the third limiting component is arranged in the second direction; wherein, the first direction and the second direction are perpendicular to each other, the two first limiting components are respectively arranged on both sides of the tray in the first direction, the second limiting component is arranged on one side of the tray in the second direction, and the third limiting component is arranged on the side of the tray in the second direction away from the second limiting component.

[0018] The first limiting component is arranged on both sides of the pallet, and cooperates with the second and third limiting components to form a stable frame structure, which effectively prevents the target object on the pallet from moving or deflecting in any direction. With the position of the pallet as the origin, the vertical layout of the two first limiting components in the first direction and the second and third limiting components in the second direction provides accurate X and Y axis positioning for the target object on the pallet, and when the two first limiting components are in the limiting state, the target object is provided with positioning in the Z axis direction, and the pallet itself also provides a positioning reference for the Z axis, thus achieving accurate three-dimensional positioning, thereby ensuring the stability of the object during processing, transportation or assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0020] Figure 1 It is a structural schematic diagram of the limiting mechanism of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the first limiting component of the limiting mechanism of the utility model;

[0022] Figure 3 It is a structural exploded schematic diagram of the first limiting component of the limiting mechanism of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the second limiting component of the limiting mechanism of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the third limiting component of the limiting mechanism of the utility model;

[0025] In the figure:

[0026] 10-mounting base, 11-tray, 12-transmission component, 13-motor;

[0027] 20-first limiting component, 21-limiting block, 211-slot, 212-guide rod, 22-first limiting seat, 221-push rod;

[0028] 30-second limiting component, 31-stopper, 32-second limiting seat;

[0029] 40 - the third limiting component, 41 - the stop block, 42 ​​- the third limiting seat, 43 - the connecting rod. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0031] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings:

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the positions or elements referred to must have specific directions, be constructed and operated in specific directions. Therefore, they cannot be understood as limitations on the present invention.

[0033] like Figure 1 to Figure 5 As shown, the preferred structure of the limiting mechanism provided by the utility model.

[0034] like Figure 1 As shown, the utility model provides a limiting mechanism, which includes a mounting base 10, two first limiting components 20, a second limiting component 30 and a third limiting component 40, wherein a tray 11 is arranged in the middle of the mounting base 10; the two first limiting components 20 are connected to the mounting base 10, and the two first limiting components 20 are arranged in the first direction; the second limiting component 30 is connected to the mounting base 10, and the second limiting component 30 is arranged in the second direction; the third limiting component 40 is connected to the mounting base 10, and the third limiting component 40 is arranged in the second direction;

[0035] Among them, the first direction and the second direction are perpendicular to each other, the two first limiting components 20 are respectively arranged on both sides of the tray 11 in the first direction, the second limiting component 30 is arranged on one side of the tray 11 in the second direction, and the third limiting component 40 is arranged on the side of the tray 11 in the second direction away from the second limiting component 30.

[0036] The mounting base 10 serves as a supporting platform for the entire mechanism. The mounting base 10 is fixed on the work surface, and its stability is crucial to the function of the entire limiting mechanism. The tray 11 is located in the middle of the mounting base 10 and is used to place objects that need to be positioned. The design of the tray 11 allows objects to be stably placed on it, and it is the starting point of the limiting process. Two first limiting components 20 are arranged on both sides of the tray 11 along the first direction, and its function is to limit the movement of the object along the first direction and provide stability. The second limiting component 30 is arranged on one side in the second direction, and the third limiting component 40 is arranged on the other side of the tray 11 in the second direction. Their function is to limit the movement of the object along the second direction of the tray 11 and provide stability.

[0037] It should be noted that the first direction and the second direction are perpendicular to each other, and the tray 11 is placed at the origin where the two directions intersect, that is, the two first limiting components 20, the second limiting component 30 and the third limiting component 40 surround the tray 11 in the middle. The multiple limiting components restrict the movement of the objects placed on the tray 11 from multiple directions.

[0038] In some embodiments, the limiting mechanism can also be used in an automated assembly line to accurately transfer and fix parts on the tray 11 for assembly. In an automated assembly line, any transfer error may lead to assembly failure or product quality degradation, and the use of the limiting mechanism in the preferred embodiment can avoid this problem.

[0039] In real scenarios, such as when an automated robotic arm is performing precision assembly, it is only necessary to place the mechanical target object accurately on the tray 11. Through the coordinated cooperation of the first limiting component 20, the second limiting component 30 and the third limiting component 40, the target object can be restricted in multiple directions to prevent any possible movement or vibration. The robotic arm can then be used to operate the target object, thereby ensuring the accuracy of the assembly process.

[0040] In a preferred embodiment, two conveying components 12 are further provided on the mounting base 10, and the two first limiting components 20 are connected to the mounting base 10 through the two conveying components 12. The introduction of the conveying components 12 is to realize the automatic import and export of the target object, thereby improving the efficiency and automation of the entire assembly line.

[0041] In a specific implementation, there are two conveying components 12, and each conveying component 12 is provided with a conveying chain and a conveying track. The conveying chain is installed on the conveying track and is responsible for carrying and moving the target object. A transmission component is provided between the two conveying components 12, and the transmission component includes a transmission rod and two transmission gears. The transmission rod serves as an intermediate transmission element, connecting the two conveying components 12, and the two transmission gears are respectively adapted to be connected to the transmission rod. The two transmission gears are respectively connected to the conveying chains on the two conveying components 12, and the connection of the transmission rod ensures that the two chains receive the same power and realize synchronous rotation.

[0042] In a specific implementation, a liftable support component is also provided at the bottom of the tray 11, and the support component is used to drive the tray 11 to rise and fall. A photoelectric sensor and a motor 13 are also provided in the mounting base 10. The photoelectric sensor detects the position of the target object and controls the motor 13, so that the motor 13 drives the support component to rise and fall, thereby controlling the height of the tray 11. When no target object enters the limiting mechanism, the tray 11 is in a normal position. When the target object enters the limiting mechanism through the conveying component 12, the photoelectric sensor detects that the target object has entered, and then controls the motor 13 to drive the support component to rise, and the tray 11 rises accordingly. As the tray 11 lifts the target object, the two sides of the target object are separated from the conveying component 12. At this time, the first limiting component 20, the second limiting component 30 and the third limiting component 40 just limit the position of the target object, so that the target object can be finely operated according to needs.

[0043] like Figure 2 and Figure 3 As shown, in a preferred embodiment, the first limiting component 20 includes a limiting block 21 and a first limiting seat 22, and the limiting block 21 is connected to the first limiting seat 22;

[0044] It should be noted that the limit block 21 is a component that directly contacts the target object to be positioned, and its function is to limit the movement of the target object. The first limit seat 22 is a structure that supports and fixes the limit block 21. It is connected to the conveying component 12, and the conveying component 12 is fixedly connected to the mounting base 10 to ensure that the limit block 21 can stably contact the target object. The connection between the limit block 21 and the first limit seat 22 can be achieved in a variety of ways, such as by a sliding rail or a bolted connection, so as to achieve dynamic adjustment and fixation of the limit block 21. In real scenarios, for example, in the precise assembly process of an automated robotic arm, the limit block 21 can be used to limit the parts grasped by the robotic arm to ensure that they are in the correct position before assembly. The contact between the limit block 21 and the parts ensures that the parts will not shift during the assembly process.

[0045] In a preferred embodiment, a slot 211 is provided on the limit block 21; a push rod 221 is provided on the first limit seat 22, and a clamping head is provided at one end of the push rod 221, and the clamping head on the push rod 221 is adapted to be embedded in the slot 211 of the limit block 21; wherein, the first limit component 20 has a limit state and a standby state, and the first limit seat 22 drives the limit block 21 to move through the push rod 221 to switch the limit state and the standby state.

[0046] It should be noted that the limit block 21 is designed to contact the target object and limit its movement in a specific direction. In the limiting state, the limit block 21 is pushed out to physically prevent the target object from leaving the tray 11. The first limit seat 22 serves as a supporting structure for the limit block 21. It is connected to the conveying component 12. Since the card head of the push rod 221 is adapted to be embedded in the card slot 211 of the limit block 21, the movement of the limit block 21 can be driven by the push rod 221. The movement of the push rod 221 controls the push-out and retraction of the limit block 21, thereby switching the state of the first limit component 20. The limiting state refers to the limit block 21 being pushed out to the position that limits the target object from leaving the tray 11. The standby state refers to the limit block 21 being pulled back to connect with the limit seat, and the upward movement of the target object is not restricted at this time.

[0047] More specifically, in some embodiments, on an automated assembly line, a target object is placed on a tray 11, and a robot is required to perform an operation, such as removing a bonded part from the target object. When the robot clamps the bonded part and moves upward, the target object may be moved upward by the bonding force, thereby leaving the tray 11. To avoid this, the first limiting component 20 is pushed to a limiting state before the operation, clamping the target object to prevent it from being lifted along with the bonded part. After the operation is completed, the first limiting component 20 is retracted to a standby state, allowing the target object to be lifted by the robot.

[0048] The advantage of this is that the limit block 21 can prevent the target object from being lifted due to the adhesive force, ensuring that the target object remains stably on the tray 11. Through physical limitation, the risk of damage to the target object due to accidental movement is reduced.

[0049] In a preferred embodiment, a plurality of guide rods 212 are provided on the limit block 21; a plurality of guide holes are provided on the first limit seat 22, and the plurality of guide holes penetrate the first limit seat 22; and the plurality of guide rods 212 are correspondingly adapted and inserted into the plurality of guide holes.

[0050] It should be noted that the guide rod 212 is a rod-shaped structure provided on the limit block 21, and is used to be inserted into the guide hole on the first limit seat 22 to guide the moving direction of the limit block 21. The guide hole is a hole provided on the first limit seat 22, which passes through the limit seat and is used to receive the guide rod 212 to ensure that the limit block 21 moves along a specific path. The cooperation between the guide rod 212 and the guide hole ensures the precise alignment of the limit block 21 when it is pushed out and retracted, and prevents the limit block 21 from being offset or tilted.

[0051] like Figure 4As shown, in a preferred embodiment, the second limiting component 30 includes a stopper 31 and a second limiting seat 32, and the stopper 31 is movably connected to the second limiting seat 32. A connecting shaft is provided in the middle of the stopper 31, and the stopper 31 is connected to the second limiting seat 32 through the connecting shaft; wherein the stopper 31 can swing along the connecting shaft.

[0052] The stopper 31 is a movable component used to directly contact the target object and limit its movement in a specific direction. The second limit seat 32 is a fixed structure used to support the stopper 31 and allow the stopper 31 to be movably connected thereon, and the second limit seat 32 is fixedly connected to the mounting base 10. The connecting shaft is an axis set in the middle of the stopper 31, and the stopper 31 is connected to the second limit seat 32 through this axis, and the stopper 31 is allowed to swing along the axial direction, which means that the stopper 31 can rotate freely within a certain angle to meet the limit requirements of different positions.

[0053] In a preferred embodiment, the stopper 31 has a guide surface and a limiting surface for limiting the target object, and the guide surface is inclined relative to the limiting surface; the stopper 31 is rotatably arranged relative to the second limiting seat 32 to have a limiting position and an avoidance position.

[0054] More specifically, when the target object moves from the outside toward the position of the tray 11 along the second direction, the target object contacts the guide surface and drives the stopper 31 to rotate to the avoidance position, so that the stopper 31 avoids the movement of the target object along the second direction; when the target object moves to a predetermined position along the second direction, that is, when it is placed on the tray 11, the target object is disengaged from the guide surface, and the stopper 31 returns to the limit position due to its own weight, thereby preventing the target object from moving in the opposite direction and leaving the tray 11 by making the limit surface of the stopper 31 contact with the target object.

[0055] The guide surface refers to an inclined surface on the stopper 31, which is used to guide the target object to move in a specific direction. The limiting surface is another surface on the stopper 31, which is used to limit its movement in the opposite direction when the target object reaches a predetermined position. The stopper 31 can rotate relative to the second limiting seat 32 so as to avoid the target object when necessary, or return to the limiting position after the target object is in place. The avoidance position refers to the position to which the stopper 31 rotates during the avoidance process, allowing the target object to move unimpeded when entering the tray 11 from the outside along the second direction. The limiting position refers to the position to which the stopper 31 returns due to its own weight after the target object is in place, and is used to limit the target object from leaving the tray 11 in the opposite direction to the direction in which it entered the tray 11. Through this design, the second limiting component 30 provides a flexible and adaptable target object positioning solution, which realizes the limitation of the target object through a simple structure, and solves the problem of complex structure of the limiting device in the prior art.

[0056] like Figure 5 As shown, in a preferred embodiment, the third limiting component 40 includes a stop block 41 and a third limiting seat 42, and the stop block 41 is movably connected to the third limiting seat 42; the stop block 41 and the third limiting seat 42 are connected by a connecting rod 43, and the stop block 41 can move up and down relative to the third limiting seat 42.

[0057] It should be noted that the stop block 41 and the third limit seat 42 are connected by a connecting rod 43. The third limit seat 42 is provided with a receiving cavity for the connecting rod 43 to be inserted. The third limit component 40 controls the distance of the stop block 41 relative to the third limit seat 42 by controlling the depth of the connecting rod 43 inserted into the receiving cavity.

[0058] Since the stop block 41 can move up and down relative to the third limiting seat 42, the stop block 41 has a stop position for limiting the target object from leaving the tray 11 and a release position for allowing the target object to leave the tray 11. When the stop block 41 rises relative to the third limiting seat 42 to a position sufficient to limit the target object from leaving the tray 11, it is the stop position. When the connecting rod 43 is fully inserted into the accommodating cavity, the bottom surface of the stop block 41 contacts the top surface of the third limiting seat 42, and at this time, the target object can leave the tray 11 from above the stop block 41 along the second direction.

[0059] In a specific implementation, when the target object enters the tray 11 through the position of the guide surface of the second limiting component 30, the stop block 41 is in the stop position to prevent the target object from moving. When the target object completes the operation process on the tray 11, the stop block 41 is controlled to move downward by controlling the depth of the connecting rod 43 inserted into the accommodating cavity. When the bottom surface of the stop block 41 contacts the top surface of the third limiting seat 42, the target object can leave the tray 11 from above the stop block 41 along the second direction and go to the next process. For example, on an automated assembly line, the stop block 41 can be used to control whether the target object can leave the operating platform. For example, when an automobile part is placed on the assembly platform for welding, the stop block 41 is in the stop position to prevent the part from moving during the welding process. After welding is completed, the stop block 41 drops to the release position, allowing the conveying component 12 to convey the welded part to make room for the next part to be welded. Through this design, the third limiting component 40 provides a flexible and automated target object positioning and release solution, which helps to improve production efficiency and operational safety.

[0060] In a preferred embodiment, a motor 13 is further disposed on the mounting base 10 , and the first limiting component 20 and the third limiting component 40 are respectively connected to the motor 13 .

[0061] It should be noted that the motor 13, as the power source of the entire limiting mechanism, is responsible for driving the mechanical parts to produce the necessary movement. It can be a servo motor, a stepper motor or a DC motor, which is selected according to the required torque, speed and precision requirements. The motor 13 is connected to the first limiting component 20 through a transmission mechanism, driving it to extend and retract along the first direction of the mounting base 10, thereby completing the function of limiting and releasing the target object. The motor 13 is also connected to the third limiting component 40, and drives the stop block 41 to rise and fall in the vertical direction (second direction) through another set of transmission mechanisms. This allows the stop block 41 to be dynamically adjusted according to the height of the target object. In the third limiting component 40, the motor 13 controls the insertion depth of the connecting rod 43 in the accommodating cavity of the third limiting seat 42 by controlling the connection between the connecting rod 43 and the stop block 41, thereby accurately controlling the final position of the stop block 41. The action of the motor 13 is precisely controlled by an automated control system, which can respond to sensor inputs, timers or external signals to ensure that the action of the limiting component is synchronized with the production process.

[0062] In a specific implementation, a photoelectric sensor is also installed on the mounting base 10. The photoelectric sensor is introduced to realize automatic detection of the position and state of the workpiece, which can further improve the degree of automation and operation accuracy. The photoelectric sensor is a sensor that uses the photoelectric effect to detect the existence and position of an object. When the workpiece enters or leaves the detection area of ​​the sensor, the photoelectric sensor can detect this change. The photoelectric sensor can automatically detect whether the workpiece has reached the predetermined position, whether it is in the correct state, and whether there are missing parts or abnormalities on the workpiece. Once the workpiece is detected, the photoelectric sensor will output an electrical signal, which can be recognized and processed by the automatic control system. After receiving the signal from the photoelectric sensor, the control system can control the motor 13 to start or stop to drive the first limit component 20 and the third limit component 40 to the appropriate position, so as to appropriately limit or release the workpiece.

[0063] The benefit of this design is that it automatically detects the position and status of the workpiece, ensures the precise movement of the limit components, and avoids human errors. Automated detection and control reduces the time required for workpiece positioning and improves the efficiency of the production line. It reduces manual inspection and intervention, reduces labor costs, and reduces errors caused by human operation.

[0064] The working principle of a limiting mechanism provided by the utility model is as follows: the limiting mechanism provided by the utility model comprises a mounting base, two first limiting components, a second limiting component 30 and a third limiting component 40, and a tray is arranged in the middle of the mounting base; the two first limiting components are connected to the mounting base, and the two first limiting components are arranged in the first direction; the second limiting component is connected to the mounting base 1, and the second limiting component is arranged in the second direction; the third limiting component is connected to the mounting base, and the third limiting component is arranged in the second direction;

[0065] Among them, the first direction and the second direction are perpendicular to each other, the two first limiting components are respectively arranged on both sides of the tray in the first direction, the second limiting component is arranged on one side of the tray in the second direction, and the third limiting component is arranged on the side of the tray in the second direction away from the second limiting component.

[0066] The limiting mechanism includes a mounting base, the central part of which is provided with a tray. This mounting base provides stable support for the entire mechanism. The tray is used to place the workpiece to be positioned and assembled. The first limiting components are arranged in pairs on both sides of the first direction of the tray to limit the movement of the workpiece along this direction. The second limiting component is installed on one side of the second direction of the tray, and cooperates with the third limiting component to limit the movement of the workpiece along this direction. Installed on the opposite side of the second direction of the tray, opposite to the second limiting component, together complete the limitation of the workpiece in the second direction. It should be noted that the first direction and the second direction are perpendicular. And, the first limiting component, through this design, the limiting mechanism can limit the movement of the workpiece in multiple directions, ensure the precise position and stability of the workpiece during automated assembly or processing, thereby improving production efficiency and product quality.

[0067] For other structures of the limiting mechanism described in this embodiment, refer to the prior art.

[0068] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A limiting mechanism, characterized in that: include: A mounting base (10), wherein a tray (11) is disposed in the middle of the mounting base (10); Two first position-limiting components (20), the two first position-limiting components (20) being connected to the mounting base (10), and the two first position-limiting components (20) being arranged in a first direction; A second limiting component (30), the second limiting component (30) being connected to the mounting base (10), and the second limiting component (30) being arranged in a second direction; A third limiting component (40), the third limiting component (40) being connected to the mounting base (10), and the third limiting component (40) being arranged in the second direction; The first direction and the second direction are perpendicular to each other, the two first limiting components (20) are respectively arranged on both sides of the tray (11) in the first direction, the second limiting component (30) is arranged on one side of the tray (11) in the second direction, and the third limiting component (40) is arranged on a side of the tray (11) in the second direction away from the second limiting component (30).

2. A limiting mechanism according to claim 1, characterized in that: Two conveying components (12) are also provided on the installation base (10), and the two first limiting components (20) are connected to the installation base (10) via the two conveying components (12).

3. A limiting mechanism according to claim 1, characterized in that: The first limiting component (20) comprises a limiting block (21) and a first limiting seat (22), and the limiting block (21) is connected to the first limiting seat (22).

4. A limiting mechanism according to claim 3, characterized in that: The limit block (21) is provided with a slot (211); A push rod (221) is provided on the first limiting seat (22), one end of the push rod (221) is provided with a clamping head, and the clamping head on the push rod (221) is adapted to be embedded in the clamping groove (211) of the limiting block (21); The first limiting component (20) has a limiting state and a standby state, and the first limiting seat (22) drives the limiting block (21) to move through the push rod (221) to switch between the limiting state and the standby state.

5. A limiting mechanism according to claim 3, characterized in that: The limit block (21) is provided with a plurality of guide rods (212); The first limiting seat (22) is provided with a plurality of guide holes, and the plurality of guide holes penetrate the first limiting seat (22); The plurality of guide rods (212) are correspondingly adapted to be inserted into the plurality of guide holes.

6. A limiting mechanism according to claim 1, characterized in that: The second position-limiting component (30) comprises a stopper (31) and a second position-limiting seat (32), wherein the stopper (31) is movably connected to the second position-limiting seat (32).

7. A limiting mechanism according to claim 6, characterized in that: The stopper (31) is provided with a connecting shaft in the middle, and the stopper (31) is connected to the second limiting seat (32) via the connecting shaft; The stopper (31) is capable of swinging along the connecting axis.

8. A limiting mechanism according to claim 7, characterized in that: The stopper (31) comprises a guide surface and a limiting surface for limiting the position of the target object, and the guide surface is arranged obliquely relative to the limiting surface; The stopper (31) is rotatably arranged relative to the second limiting seat (32) to have a limiting position and an avoiding position.

9. A limiting mechanism according to claim 1, characterized in that: The third limiting component (40) comprises a stop block (41) and a third limiting seat (42), and the stop block (41) is movably connected to the third limiting seat (42); The stop block (41) and the third limit seat (42) are connected via a connecting rod (43), and the stop block (41) can move up and down relative to the third limit seat (42).

10. A limiting mechanism according to claim 1, characterized in that: A motor (13) is also provided on the mounting base (10), and the first limiting component (20) and the third limiting component (40) are respectively connected to the motor (13).

Images