Anti-shift material taking device

Abstract

The utility model relates to the technical field of transportation operation, and specifically discloses a displacement-preventing material taking device, which comprises a clamping jaw mechanism, the clamping jaw mechanism is used for clamping a material tray with material holes on the top surface in the horizontal direction; a material cover plate is located below the clamping jaw mechanism and is connected to the clamping jaw mechanism in the vertical direction to slide up and down; the material cover plate is used for pressing the material tray downward to prevent the material in each material hole from separating from the corresponding material hole. The displacement-preventing material taking device can prevent the material from separating from the corresponding material hole during the process of transferring with the material tray.

Description

Technical Field

[0001] This utility model relates to the field of transportation operation technology, and in particular to an anti-displacement material handling device. Background Technology

[0002] In modern manufacturing, particularly in electronics manufacturing, semiconductor packaging, and precision instrument assembly, automated material handling and turnover are crucial for improving production efficiency and ensuring product quality. Material trays, as a highly efficient and standardized material carrier, are widely used. Material trays are typically designed with multiple regularly arranged cavities (or slots) facing upwards to accommodate single or multiple small materials (such as chips, electronic components, and small structural parts). By placing materials in batches into the cavities of the tray, a transfer robot (such as a robotic arm mounted on an AGV or a conveyor belt system) can easily move the entire tray, enabling synchronous, batch transfer of large quantities of materials and significantly improving logistics efficiency.

[0003] However, this tray-based material handling method faces a significant challenge when dealing with small, lightweight materials (such as semiconductor chips, miniature sensors, and small-sized capacitors and resistors): the material is prone to detaching from its corresponding hopper during tray movement.

[0004] This phenomenon is mainly caused by the following reasons:

[0005] (1) Inertial force and vibration: When the transfer robot starts, stops, turns, or accelerates / decelerates, the tray and the material it carries will be subjected to inertial force. At the same time, vibrations generated by the operation of the machine itself or the external environment will also be transmitted to the tray. For small and light materials, their own mass is insufficient to resist these external forces, and they are very likely to slide, jump or even completely detach in the material cavity.

[0006] (2) Limitations of material cavity design: In order to facilitate the loading and unloading of materials (usually done by a material handling robot), the material cavity is usually designed with an opening slightly larger than the material itself and a limited depth. While this design provides operational convenience, it also means that the material has a relatively large degree of freedom in the material cavity and lacks effective physical constraints to resist horizontal movement or vertical jumping.

[0007] (3) External disturbances: The material tray may encounter uneven surfaces, airflow disturbances or other unexpected contact on the transfer path. These minor external disturbances are enough to cause small materials to shift.

[0008] If materials leave their designated storage hoppers during turnover, it will directly lead to serious subsequent problems:

[0009] (1) Material picking failure: The downstream picking robot (such as the nozzle of the pick-and-place machine) cannot accurately pick up the material at the preset position, resulting in production interruption or equipment alarm.

[0010] (2) Material confusion: Displaced materials may fall into other material pits, causing material mixing; or fall into non-material pit areas of the material tray, or even scatter on the equipment or ground, resulting in material loss or contamination.

[0011] (3) Reduced efficiency and increased costs: Manual intervention is required to reset, find lost materials or handle errors, which increases downtime, labor costs and the risk of material loss.

[0012] (4) Potential quality issues: The material may be damaged due to collision or friction during the relocation process.

[0013] Therefore, when using trays for automated turnover of small and light materials (especially high-value chip materials), how to effectively prevent materials from falling out of their corresponding hoppers during the transfer process and ensure that the materials always remain in the predetermined position has become a key technical requirement to ensure the smooth operation of subsequent automated material handling processes and improve overall production efficiency and yield.

[0014] This invention is dedicated to developing an anti-displacement material handling device to prevent materials from detaching from their corresponding material cavities during the transfer process with the material tray.

[0015] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0016] One objective of this invention is to provide an anti-displacement material handling device that can prevent materials from detaching from their corresponding hoppers during the transfer of materials along with the material tray.

[0017] To achieve the above objectives, this utility model provides an anti-displacement material handling device, comprising:

[0018] A gripper mechanism is used to grip a material tray with a material cavity on its top surface in a horizontal direction;

[0019] A material cover plate is located below the gripper mechanism and is slidably connected to the gripper mechanism in a vertical direction; the material cover plate is used to press down on the material tray to prevent the material in each of the material holes from leaving the corresponding material hole.

[0020] Optionally, the gripper mechanism includes:

[0021] A fixed frame is located above the material cover plate and is slidably connected to the material cover plate.

[0022] Two clamping components are arranged opposite to each other, and the two clamping components are slidably connected to the fixed frame in the horizontal direction;

[0023] A gripper cylinder is mounted on the fixed frame, and the drive end of the gripper cylinder is connected to the two gripping components to drive the two gripping components to move closer or further apart.

[0024] Optional, also includes:

[0025] A linear bearing, which is mounted and fixed on the fixed frame;

[0026] A limiting stop plate is located above the linear bearing;

[0027] A vertical guide rod, the lower end of which is fixed to the material cover plate, and the upper end which slides through the linear bearing and connects to the limiting baffle.

[0028] The diameter of the limiting baffle is larger than the diameter of the vertical guide rod, so as to restrict the limiting baffle from passing through the linear bearing.

[0029] Optionally, the side of the material tray is provided with a claw groove;

[0030] The clamping assembly includes a claw hook fixing plate that is slidably connected to the fixed frame, and a claw hook body that is mounted on the claw hook fixing plate at its upper end.

[0031] The lower end of the claw hook body is provided with a claw hook portion that extends into the claw hook groove.

[0032] Optionally, the two clamping components are arranged along the width direction of the tray;

[0033] The anti-displacement material handling device also includes two guide plates that are installed and fixed on the fixed frame along the length direction of the material tray;

[0034] The lower end of the guide plate protrudes downward relative to the fixed frame to limit the horizontal displacement of the tray along its length.

[0035] Optionally, the surfaces of the two guide plates that are close to each other are inclined surfaces, and the distance between the two inclined surfaces gradually increases from top to bottom.

[0036] Optionally, the fixing frame includes:

[0037] Two fixed long plates are arranged along the width direction of the tray, and the gripper cylinder is fixedly installed at the middle position of the two fixed long plates, wherein each of the gripping components is slidably disposed with one of the fixed long plates;

[0038] Two extended connecting rods are arranged along the length of the tray, one end of the two fixed long plates is connected by one of the extended connecting rods, and the other end of the two fixed long plates is connected by the other extended connecting rod.

[0039] Each of the extended connecting rods is equipped with a guide plate on the section away from the gripper cylinder.

[0040] Optionally, the material cover plate is provided with a plurality of ventilation holes that extend from top to bottom through the material cover plate.

[0041] Optionally, the cross-sectional dimension of the vent hole is smaller than the cross-sectional dimension of the material cavity to restrict the material from passing through the vent hole.

[0042] The beneficial effects of this utility model are as follows: It provides an anti-displacement material handling device, which introduces a material cover plate that is slidably connected to the gripper mechanism, and realizes the downward pressing action of the material cover plate while clamping the material tray, which significantly improves the positioning stability and safety of the material during the turnover process.

[0043] When it is necessary to transfer the material tray, the specific working process is as follows:

[0044] (1) The gripper mechanism and the material cover are moved horizontally to directly above the material tray by a transfer drive mechanism such as a transfer robot;

[0045] (2) When the gripper mechanism is in the open state, the transfer drive mechanism drives the gripper mechanism and the material cover plate to move vertically downward. During this process:

[0046] First, the bottom surface of the material cover plate will contact the top surface of the material tray, thereby covering the opening of each material cavity and preventing the material in each material cavity from escaping upwards from the corresponding material cavity.

[0047] Next, the gripper mechanism continues to slide down until the gripping part of the gripper mechanism is opposite to the side of the material tray;

[0048] (3) The gripper mechanism closes and clamps the side of the tray; finally, the tray is transferred to the required position under the drive of the transfer drive mechanism.

[0049] When it is necessary to release the material tray, the specific working process is as follows:

[0050] (1) The gripper mechanism is in the open state, and the transfer drive mechanism drives the gripper mechanism and the material cover plate to move vertically upward;

[0051] (2) As the gripper mechanism gradually moves upward, the material cover plate moves upward together with the gripper mechanism and completely detaches from the material tray so that the subsequent material handling mechanism such as the material handling robot can pick up the material from the material hole.

[0052] During the above process, because the material cover plate presses down on the material tray and restricts the material in each of the material cavities from leaving the corresponding cavities, even if slight vibration or airflow occurs during the transfer of the material tray, the material in the cavities will not push open the material cover plate and shift. Therefore, the anti-displacement material handling device provided by this utility model can prevent the material from leaving its corresponding cavity during the transfer of the material tray. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 This is a top view of the anti-displacement material handling device provided in the embodiment.

[0055] Figure 2 This is a bottom schematic diagram of the anti-displacement material handling device provided in the embodiment.

[0056] In the picture:

[0057] 100, Material tray; 100a, Claw groove; 200, Transfer drive mechanism;

[0058] 1. Gripper mechanism; 101. Fixed frame; 1011. Fixed long plate; 1012. Extended connecting rod; 102. Gripping assembly; 1021. Gripper hook fixing plate; 1022. Gripper hook body; 1022a. Gripper hook part; 103. Gripper cylinder;

[0059] 2. Material cover plate;

[0060] 3. Linear bearings;

[0061] 4. Limiting baffle;

[0062] 5. Vertical guide rod;

[0063] 6. Guide plate; 601. Inclined surface. Detailed Implementation

[0064] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0065] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0066] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0067] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0068] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0069] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0070] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0071] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0072] The direct drive mechanism in this invention can be a linear motor, a cylinder, a hydraulic cylinder, or a motor lead screw and slider assembly, etc.; the rotary drive mechanism can be a servo motor, a stepper motor, or a rotary cylinder, etc.

[0073] This embodiment provides an anti-displacement material handling device. By introducing a material cover plate that is slidably connected to the gripper mechanism, the material cover plate is pressed down while the material tray is being gripped, which significantly improves the positioning stability and safety of the material during the turnover process.

[0074] See Figure 1 and Figure 2 The anti-displacement material handling device provided in this embodiment includes:

[0075] A gripper mechanism 1 is used to grip a material tray 100 with a material cavity on its top surface in a horizontal direction.

[0076] Material cover plate 2 is located below the gripper mechanism 1 and is slidably connected to the gripper mechanism 1 in a vertical direction; the material cover plate 2 is used to press down on the material tray 100 to prevent the material in each of the material holes from leaving the corresponding material hole.

[0077] The anti-displacement material handling device provided in this embodiment operates as follows when the material tray 100 needs to be transferred:

[0078] (1) The gripper mechanism 1 and the material cover plate 2 are moved horizontally to directly above the material tray 100 by a transfer drive mechanism such as a transfer robot.

[0079] (2) When the gripper mechanism 1 is in the open state, the transfer drive mechanism drives the gripper mechanism 1 and the material cover plate 2 to move vertically downward. During this process:

[0080] First, the bottom surface of the material cover plate 2 will contact the top surface of the material tray 100, thereby covering the opening of each material cavity and preventing the material in each material cavity from detaching upwards from the corresponding material cavity.

[0081] Next, the gripper mechanism 1 continues to slide down until the gripping part of the gripper mechanism 1 is opposite to the side of the material tray 100.

[0082] (3) The gripper mechanism 1 closes and clamps the side of the material tray 100; finally, the material tray 100 is transferred to the required position under the drive of the transfer drive mechanism.

[0083] When it is necessary to release material tray 100, the specific working process is as follows:

[0084] (1) The gripper mechanism 1 is in the open state, and the transfer drive mechanism drives the gripper mechanism 1 and the material cover plate 2 to move vertically upward;

[0085] (2) As the gripper mechanism 1 gradually moves upward, the material cover plate 2 eventually moves upward together with the gripper mechanism 1 and completely separates from the material tray 100 so that the subsequent material handling mechanism such as the material handling robot can pick up the material from the material hole.

[0086] During the above process, because the material cover plate 2 presses down on the material tray 100 and restricts the material in each of the material cavities from leaving the corresponding material cavity, even if slight vibration or airflow occurs during the transfer of the material tray 100, the material in the material cavity will not push open the material cover plate 2 and shift. Therefore, the anti-displacement material handling device provided by this utility model can prevent the material from leaving its corresponding material cavity during the transfer with the material tray 100.

[0087] In this embodiment, the gripper mechanism 1 includes:

[0088] A fixed frame 101 is located above the material cover plate 2 and is slidably connected to the material cover plate 2 in a vertical manner;

[0089] Two clamping components 102 are arranged opposite to each other, and the two clamping components 102 are slidably connected to the fixed frame 101 in the horizontal direction;

[0090] A gripper cylinder 103 is mounted on the fixed frame 101, and the driving end of the gripper cylinder 103 is connected to the two gripping components 102 to drive the two gripping components 102 to move closer or further apart.

[0091] The precise horizontal movement of the clamping assembly 102 is achieved through the coordinated design of the fixed frame 101 and the gripper cylinder 103. The fixed frame 101 serves as the overall support structure, ensuring the stability of the clamping action. The dual clamping assemblies 102, arranged opposite each other, work in conjunction with the gripper cylinder 103 to adapt to the clamping requirements of different sized trays 100, improving the versatility of the device. This structure features efficient power transmission and uniform clamping force, avoiding the problem of tray 100 tilting caused by unilateral pressure.

[0092] Optionally, the anti-displacement material handling device also includes:

[0093] Linear bearing 3, which is mounted and fixed on the fixed frame 101;

[0094] A limiting baffle 4 is located above the linear bearing 3;

[0095] Vertical guide rod 5, the lower end of which is fixed to the material cover plate 2, and the upper end slides through the linear bearing 3 and is connected to the limiting baffle 4;

[0096] The diameter of the limiting baffle 4 is larger than that of the vertical guide rod 5, so as to restrict the limiting baffle 4 from passing through the linear bearing 3.

[0097] When the material tray 100 lifts the material cover plate 2 upwards, the material cover plate 2 drives the vertical guide rod 5 to move upwards relative to the linear bearing 3. At this time, the limiting baffle 4 is located above the linear bearing 3 and at a certain distance from the linear bearing 3. After the material cover plate 2 is separated from the material tray 100, under the action of gravity, the material cover plate 2 drives the vertical guide rod 5 to move downwards relative to the linear bearing 3 until the bottom surface of the limiting baffle 4 abuts against the top surface of the linear bearing 3. At this time, the material cover plate 2 no longer slides downwards.

[0098] In this embodiment, the material cover plate 2 slides downward and presses against the material tray 100 by its own gravity, without the need for cylinders or springs or other auxiliary devices to provide pressing power. The structure is simple and the cost is low.

[0099] In this embodiment, the side of the material tray 100 is provided with a claw groove 100a;

[0100] The clamping assembly 102 includes a claw hook fixing plate 1021 slidably connected to the fixing frame 101, and a claw hook body 1022 mounted on the claw hook fixing plate 1021 at its upper end.

[0101] The lower end of the claw hook body 1022 is provided with a claw hook portion 1022a that extends into the claw hook groove 100a.

[0102] When the gripper cylinder 103 drives the two gripper hook fixing plates 1021 to move closer to each other, the gripper hook part 1022a will extend into the gripper hook groove 100a and provide sufficient upward support to the material tray 100. When the subsequent transfer drive mechanism drives the gripper mechanism 1 and the material cover plate 2 to move up and down, it will not cause the material tray 100 to fall downward.

[0103] Optionally, the two clamping assemblies 102 are arranged along the width direction of the tray 100;

[0104] The anti-displacement material handling device also includes two guide plates 6 that are installed and fixed on the fixed frame 101 along the length of the material tray 100;

[0105] The lower end of the guide plate 6 protrudes downward relative to the fixed frame 101 to limit the horizontal displacement of the tray 100 along its length.

[0106] Furthermore, the surfaces of the two guide plates 6 that are close to each other are inclined surfaces 601, and the distance between the two inclined surfaces 601 gradually increases from top to bottom.

[0107] The downward-extending structure of the guide plate 6 forms a physical barrier in the length direction, which, together with the clamping component 102 in the width direction, constitutes a cross-shaped limiting system. This design effectively suppresses possible rotation or shifting of the tray 100 during translation, especially for long, narrow trays 100, preventing displacement due to center of gravity shift. The inclined surface 601 is designed to form a "flared" guiding structure with a self-centering function: when there is an assembly deviation in the tray 100, the inclined surface can automatically correct the position of the tray 100. Increasing the lower spacing can accommodate the manufacturing tolerances of the tray 100 and buffer collision forces through progressive contact, avoiding mechanical damage caused by rigid positioning.

[0108] In this embodiment, the fixed frame 101 includes:

[0109] Two fixed long plates 1011 are arranged along the width direction of the tray 100. The gripper cylinder 103 is fixedly installed at the middle position of the two fixed long plates 1011, wherein each of the clamping components 102 is slidably disposed with one of the fixed long plates 1011.

[0110] Two extended connecting rods 1012 are arranged along the length of the tray 100. One end of the two fixed long plates 1011 is connected by one of the extended connecting rods 1012, and the other end of the two fixed long plates 1011 is connected by the other extended connecting rod 1012.

[0111] In this embodiment, a guide plate 6 is installed on the section of each of the extended connecting rods 1012 that is away from the gripper cylinder 103.

[0112] Optionally, the material cover plate 2 is provided with a plurality of vent holes extending from top to bottom through the material cover plate 2. Further, the cross-sectional dimension of the vent holes is smaller than the cross-sectional dimension of the material cavity, so as to restrict the material from passing through the vent holes.

[0113] The vent design achieves air pressure balance: during the pressing down of the cover plate, trapped air in the material cavity is expelled, preventing material bouncing due to the air cushion effect; it also prevents vacuum adsorption from affecting cover plate separation. The vent arrangement also reduces the weight of the cover plate and lowers the moment of inertia.

[0114] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A device for preventing material displacement during material handling, characterized in that, include: The gripper mechanism (1) is used to grip a material tray (100) with a material cavity on its top surface in the horizontal direction. Material cover plate (2), the material cover plate (2) is located below the gripper mechanism (1) and is slidably connected to the gripper mechanism (1) in the vertical direction; the material cover plate (2) is used to press down on the material tray (100) to restrict the material in each of the material holes from leaving the corresponding material hole.

2. The anti-displacement material handling device according to claim 1, characterized in that, The gripper mechanism (1) includes: A fixed frame (101) is located above the material cover plate (2) and is slidably connected to the material cover plate (2) in the upper and lower parts; Two clamping components (102) are arranged opposite to each other, and the two clamping components (102) are slidably connected to the fixed frame (101) in the horizontal direction; A gripper cylinder (103) is mounted on the fixed frame (101), and the driving end of the gripper cylinder (103) is connected to the two gripping components (102) to drive the two gripping components (102) to move closer or further apart.

3. The anti-displacement material handling device according to claim 2, characterized in that, Also includes: Linear bearing (3), the linear bearing (3) is mounted and fixed on the fixed frame (101); A limiting stop (4) is located above the linear bearing (3); Vertical guide rod (5), the lower end of which is fixed to the material cover plate (2), and the upper end slides through the linear bearing (3) and is connected to the limiting baffle (4); The diameter of the limiting baffle (4) is larger than that of the vertical guide rod (5) to restrict the limiting baffle (4) from passing through the linear bearing (3).

4. The anti-displacement material handling device according to claim 3, characterized in that, The side of the tray (100) is provided with a claw groove (100a). The clamping assembly (102) includes a claw hook fixing plate (1021) slidably connected to the fixing frame (101), and a claw hook body (1022) mounted on the claw hook fixing plate (1021) at its upper end. The lower end of the claw hook body (1022) is provided with a claw hook part (1022a) that extends into the claw hook groove (100a).

5. The anti-displacement material handling device according to claim 2, characterized in that, The two clamping assemblies (102) are arranged along the width direction of the tray (100); The anti-displacement material handling device also includes two guide plates (6) that are installed and fixed on the fixed frame (101) along the length direction of the material tray (100). The lower end of the guide plate (6) protrudes downward relative to the fixed frame (101) to limit the horizontal displacement of the tray (100) along the length direction.

6. The anti-displacement material handling device according to claim 5, characterized in that, The surfaces of the two guide plates (6) that are close to each other are inclined surfaces (601), and the distance between the two inclined surfaces (601) gradually increases from top to bottom.

7. The anti-displacement material handling device according to claim 5, characterized in that, The fixed frame (101) includes: Two fixed long plates (1011) are arranged along the width direction of the tray (100), and the gripper cylinder (103) is fixedly installed at the middle position of the two fixed long plates (1011), wherein each of the clamping components (102) is slidably disposed with one of the fixed long plates (1011); Two extended connecting rods (1012) are arranged along the length of the tray (100). One end of the two fixed long plates (1011) is connected by one of the extended connecting rods (1012), and the other end of the two fixed long plates (1011) is connected by the other extended connecting rod (1012). In this embodiment, a guide plate (6) is installed on the section of each of the extended connecting rods (1012) away from the gripper cylinder (103).

8. The anti-displacement material handling device according to claim 7, characterized in that, The material cover plate (2) is provided with a number of ventilation holes that run from top to bottom through the material cover plate (2).

9. The anti-displacement material handling device according to claim 8, characterized in that, The cross-sectional dimension of the vent hole is smaller than that of the material cavity to restrict the material from passing through the vent hole.

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