Feeding mechanism and storage device

Abstract

The utility model relates to a feeding mechanism and a storage device, the feeding mechanism comprises a clamping jaw assembly and a driving assembly connected with the clamping jaw assembly, the driving assembly drives the clamping jaw assembly to switch between an opening state and a closing state, the driving assembly comprises a driver, an ejector rod, a base and an elastic piece, the ejector rod penetrates through the base and is connected with the clamping jaw assembly, and the elastic piece is connected with the clamping jaw assembly. The elastic piece is arranged between the ejector rod and the base, an output shaft of the driver is in floating connection with the ejector rod, the ejector rod and the output shaft can move relatively, when the output shaft stretches out, the ejector rod is driven to jack, the clamping jaw assembly is opened, when the output shaft retracts, the elastic piece drives the ejector rod to retract, and the clamping jaw assembly is closed. The clamping jaw assembly is driven by the ejector rod, the structure is simple, and meanwhile the situation that the ejector rod is stuck due to precision errors can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor chip tray storage technology, and in particular to a feeding mechanism and storage device. Background Technology

[0002] During the processing or testing of semiconductors and electronic components, components need to be transported via trays. These trays need to be stored in storage devices, which, when used in processing equipment such as cutting and sorting machines, must be integrated into the processing equipment. Currently, when a tray needs to be placed into a storage device, it must first pass through a feeding mechanism, which typically includes grippers. The opening and closing of the grippers allows the tray to enter the storage device. Existing grippers are driven by cylinders, with the cylinder's extension rod fixedly connected to a push rod. The cylinder extends or retracts the push rod. However, due to issues such as assembly precision and push rod dimensional accuracy, when the push rod's position deviates, it can easily jam during retraction, preventing it from retracting and affecting equipment operation. Utility Model Content

[0003] One objective of this invention is to solve the existing technical problems by providing a feeding mechanism that can solve the problem of push rod jamming.

[0004] Another objective of this invention is to provide a storage device that can solve the problem of tray storage.

[0005] To achieve the objectives of this utility model, the embodiments of this utility model adopt the following technical solutions:

[0006] The feeding mechanism includes a gripper assembly and a drive assembly connected to the gripper assembly. The drive assembly drives the gripper assembly to switch between an open state and a closed state. The drive assembly includes a driver, a push rod, a base, and an elastic element. The push rod passes through the base and is connected to the gripper assembly. The elastic element is disposed between the push rod and the base. The output shaft of the driver is floatingly connected to the push rod. The push rod and the output shaft can move relative to each other. When the output shaft extends, it drives the push rod to rise, and the gripper assembly opens. When the output shaft retracts, the elastic element drives the push rod to retract, and the gripper assembly closes.

[0007] In some embodiments, the gripper assembly includes a gripper and a rotating shaft. The gripper passes through the rotating shaft, and a lever is provided at one end of the rotating shaft. A push rod is correspondingly provided with the lever, and the lever pushes the lever to move when the push rod is raised.

[0008] In some embodiments, the gripper is disposed in a gripper seat, and the gripper seat is provided with an elastic reset member, and the gripper is kept in a closed state by the elastic reset member;

[0009] And / or, several gripper seats are spaced apart on the rotating shaft.

[0010] In some embodiments, the base is provided with a through hole and a sleeve, and the push rod passes through the sleeve;

[0011] And / or, the elastic element is sleeved on the top rod and located between the retaining ring of the top rod and the base;

[0012] And / or, the actuator is a cylinder and the elastic element is a spring.

[0013] A storage device includes a storage section having a receiving cavity, an opening of which is provided with a feeding mechanism for receiving a pallet, and a gripper assembly for receiving the pallet.

[0014] In some embodiments, a lifting plate is provided in the receiving cavity to support the tray. The lifting plate is connected to a lifting assembly, which drives the lifting plate to move within the receiving cavity.

[0015] In some embodiments, the lifting assembly includes a servo motor and an electric cylinder connected to the servo motor. The electric cylinder is connected to a lifting plate, and the lifting plate is connected to a guide rod. The guide rod passes through a guide portion within the receiving cavity.

[0016] And / or, the gripper assemblies are disposed opposite each other on both sides of the opening.

[0017] In some embodiments, the storage unit includes a frame, the frame including a first side and a third side disposed opposite to each other, and a second side and a fourth side disposed opposite to each other, the gripper assembly being disposed on the first side and the third side, and the drive assembly being disposed on the second side and / or the fourth side.

[0018] In some embodiments, the first side and the third side correspond to the long side of the tray, and the second side and the fourth side correspond to the short side of the tray. When several storage devices are arranged adjacent to each other, the first side and the third side of adjacent storage units are arranged opposite to each other.

[0019] In some embodiments, the second side or the fourth side is provided with a discharge port, and the discharge port is provided with an openable and closable baffle;

[0020] And / or, sensors are provided on the first side and the third side to determine the lowering position of the lifting plate.

[0021] This utility model has the following main advantages:

[0022] (1) The gripper assembly is driven by a push rod, which has a simple structure and can avoid the push rod from jamming due to accuracy errors; (2) The gripper assembly and the drive assembly are distributed on different end faces of the storage section, so that when multiple storage devices are used side by side, the drive assembly is not blocked, which is convenient for installation and maintenance; (3) The lifting plate is controlled by a servo motor and an electric cylinder, which is integrated, simple to assemble, and has high control accuracy; (4) The opening and closing baffle is set on the side of the storage section, which makes it easy for workers to take out the tray, simplifies the structure, and reduces the possibility of the storage device becoming unusable due to damage to parts during use; (5) The overall structure of the storage device is simplified, which improves its durability and ease of maintenance; Other advantages of the present invention are described in the specific embodiments. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.

[0024] Figure 1 This is a perspective view of the feeding mechanism provided in an embodiment of this utility model.

[0025] Figure 2 This is a schematic diagram of the gripper assembly in the open state provided in an embodiment of the present invention.

[0026] Figure 3 This is a cross-sectional view of the driving component provided in an embodiment of this utility model.

[0027] Figure 4 This is a schematic diagram of a tray placed on a gripper assembly according to an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the storage device provided in an embodiment of the present invention.

[0029] Figure 6 This is a cross-sectional view of the gripper when it is open, according to an embodiment of this utility model.

[0030] Figure 7 This is a cross-sectional view of the gripper when it is closed, as provided in the embodiment of this utility model.

[0031] Figure 8 This is a schematic diagram of the storage device with its baffle open according to an embodiment of the present invention.

[0032] Figure 9 This is a schematic diagram of several storage devices provided in this embodiment of the present invention being used side by side.

[0033] Figure 10 This is a schematic diagram of the tray provided in an embodiment of the present utility model.

[0034] In the attached image:

[0035] 1. Feeding mechanism; 2. Storage device; 10. Pallet; 100. Gripper assembly; 101. Groove; 102. Long side; 103. Short side; 110. Gripper; 111. Upper end face; 112. Side end face; 113. Lower end face; 120. Rotating shaft; 130. Gripper seat; 140. Bearing; 150. Elastic reset element; 160. Lever; 200. Drive assembly; 210. Driver; 211. Output shaft; 220. Push rod; 221. Retaining ring; 230. Base; 231, through hole; 232, sleeve; 240, elastic element; 300, storage section; 310, receiving cavity; 311, opening; 320, lifting plate; 330, lifting assembly; 331, servo motor; 332, electric cylinder; 333, guide rod; 334, guide section; 340, frame; 341, first side; 342, second side; 343, third side; 344, fourth side; 345, discharge port; 350, sensor; 360, baffle. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0037] In this embodiment, "several" and "more than" refer to two or more. 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., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated 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.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The feeding mechanism and storage device of this embodiment are used for receiving and storing the pallet 10. The pallet 10 is placed on the feeding mechanism 1, and the pallet 10 can enter the storage device for storage by opening and closing the feeding mechanism 1. Figure 10 The image shows a tray commonly used in this field. The tray 10 is provided with several grooves 101 for accommodating semiconductor components such as chips. The tray 10 can be moved to the feeding mechanism 1 by manual labor or a robotic arm.

[0040] <Example 1>

[0041] like Figures 1 to 9 As shown, the feeding mechanism 1 provided in this embodiment includes a gripper assembly 100 and a drive assembly 200. The gripper assembly 100 has an open state (e.g., ...). Figure 2 ) and closed state (e.g.) Figure 1The drive assembly 200 is connected to the gripper assembly 11. The drive assembly 200 drives the gripper assembly 100 to switch between an open and closed state. The drive assembly 200 provides power to the gripper assembly 100. When the gripper assembly 100 is in the closed state, the tray 10 is placed on the gripper assembly 100. The drive assembly 200 includes a driver 210, a push rod 220, a base 230, and an elastic element 240. The push rod 220 passes through the base 230 and is connected to the gripper assembly 100. The push rod 220 can push the gripper assembly 100, causing the gripper assembly 100 to switch states. Specifically, the push rod 220 is disposed in the through hole 231 of the base 230, allowing it to extend and retract within the through hole 231. A sleeve 232 is provided in the through hole 231, and the push rod 220 passes through the sleeve 232. The sleeve 232 can reduce the wear of the through hole 231 and can position and guide the push rod. In this embodiment, the sleeve and the base are made of copper. The elastic element 240 is disposed between the top rod 220 and the base 230. Specifically, the base 230 is fixedly disposed, and the elastic element 240 is sleeved on the top rod 220 and located between the retaining ring 221 of the top rod 220 and the base 230. The elastic element 240 can be a spring, and the elastic force can act on the retaining ring 221, thereby pushing the top rod 220. The output shaft 211 of the driver 210 is floatingly connected to the top rod 220. By adopting a floating connection, the top rod 220 and the driver 210 can move relative to each other, so that the top rod 220 has a certain degree of freedom and will not jam when moving relative to the base 230. When the output shaft 210 extends, it drives the top rod 220 to rise, and the gripper assembly 100 opens. When the output shaft 210 retracts, the elastic element 240 drives the top rod to retract, and the gripper assembly 100 closes. The driver can be a power device with an output shaft, such as a cylinder. The linear motion of the push rod 220 drives the gripper assembly 100 to switch states, simplifying the structure of the drive assembly of the gripper assembly 100. When there are deviations in the dimensional accuracy or installation of the push rod 220, the push rod 220 is prone to jamming in the through hole 231 during retraction. The floating connection allows for a certain degree of relative movement of the push rod, making it less prone to jamming during retraction. By using an elastic element to provide the restoring force for the push rod, the problem of the output shaft 210 not being able to provide the push rod retraction power when using a floating connection is solved. The elastic element 240 is sleeved on the push rod 220, making the elastic element, push rod, and output shaft coaxial, ensuring that the movement of the push rod 220 remains stable and smooth, and preventing jamming.

[0042] like Figure 2 , Figure 6 and Figure 7As shown, the gripper assembly 100 further includes grippers 110 and a rotating shaft 120. The grippers 110 pass through the rotating shaft 120, and the rotating shaft 120 drives the grippers 110 to rotate. The rotating shaft 120 is horizontally positioned, and multiple grippers 110 can be arranged on the rotating shaft, with the multiple grippers moving synchronously. The grippers 110 are disposed in gripper seats 130, which are fixedly positioned. The rotating shaft 120 passes through the gripper seats 130, and a bearing 140 is provided between the rotating shaft 120 and the gripper seats 130 to make the rotation of the rotating shaft 120 relative to the gripper seats 130 smoother. Multiple grippers 110 can be arranged in each gripper seat 130, and multiple gripper seats 130 can be arranged at intervals on the rotating shaft 120. The gripper seat 130 is provided with an elastic reset member 150. The gripper 110 is kept in a closed state by the elastic reset member 150. The elastic reset member 150 can be a spring. One end of the elastic reset member 150 abuts against the gripper seat 130, and the other end abuts against the gripper 110. The gripper 110 is pivotally connected to the gripper seat 130. When the gripper 110 is in the closed state, it is limited by abutting against the gripper seat 130 through its lower end 113. One end of the rotating shaft 120 is provided with a lever 160. The push rod 220 is correspondingly provided with the lever 160. When the push rod 220 is raised, it pushes the lever 160 to move. Specifically, one end of the lever 160 is connected to the rotating shaft 120, and the other end is provided on the push rod 220. When the push rod 220 is raised, the lever 160 drives the rotating shaft 120 to rotate, thereby switching the gripper 110 between the closed and open states. The gripper 110 has an upper end face 111 and a side end face 112. The upper end face 111 is flat, and when the gripper 110 is closed, the upper end face 111 is horizontal, allowing the tray 10 to be placed on the upper end face 111. The side end face 112 is inclined, allowing the gripper 110 to open when the lower lifting plate moves upward.

[0043] <Example 2>

[0044] In this embodiment, the parts that are the same as in Embodiment 1 are given the same reference numerals, and the same text descriptions are omitted.

[0045] like Figures 4 to 5As shown, compared to Embodiment 1, this embodiment provides a storage device 2, which houses and stores a tray 10 placed on a feeding mechanism 1. The storage device 2 includes a storage section 300, which has a receiving cavity 310. A feeding mechanism 1 is provided at the opening 311 of the receiving cavity 310 to receive the tray 10. The opening 311 is located at the top of the receiving cavity 310. In this embodiment, the cross-section of the receiving cavity 310 is approximately rectangular, corresponding to the shape of the tray 10, facilitating the movement of the tray 10 within the receiving cavity 310. The gripper assembly 100 is used to receive the tray 10. The storage device 2 of this embodiment has two sets of oppositely arranged feeding mechanisms 1, which support the tray 10 through four grippers 110. A lifting plate 320 is provided within the receiving cavity 310, which supports the tray 10. The lifting plate 320 is connected to a lifting assembly 330, which drives the lifting plate 320 to move within the receiving cavity 310. When the storage tray 10 is in storage, the grippers 110 are in the closed state, and the upper surfaces 111 of the grippers 110 are flush. The tray 10 is placed on the upper surfaces 111 and kept horizontal. Then, the lifting assembly 330 drives the lifting plate 320 to rise. When the lifting plate 320 rises, it can push open the grippers 110 on both sides, lift the tray placed on the upper surfaces 111 of the grippers 110, so that the tray 10 is separated from the grippers 110. The tray 10 falls on the lifting plate 320 or on the lifting plate 320 where the tray 10 is already stored, and moves above the grippers 110. Then, the driving assembly 200 opens the grippers 110. The distance between the grippers 110 is greater than the width of the tray 10. The lifting assembly 330 drives the lifting plate 320 to descend, so that the tray 10 can enter the receiving cavity 310. Then, the driving assembly 200 resets, and the grippers 110 reset to the closed state. When the lower pallet 10 is retracted into the receiving cavity, the lifting plate 320 rises again, and the existing pallets 10 on the lifting plate 320 rise simultaneously, lifting the pallets 10 on the gripper 110 and retracting them into the receiving cavity. Several pallets 10 are stacked on the lifting plate 320. Specifically, the lifting assembly 330 includes a servo motor 331 and an electric cylinder 332 connected to the servo motor 331. The electric cylinder 332 is connected to the lifting plate 320, driving the lifting plate 320 to make its movement more precise and more energy-efficient. The lifting plate 320 is connected to a guide rod 333, which passes through a guide portion 334 in the receiving cavity 310. During the movement of the lifting plate 320, it is guided by the guide rod 333 to make its movement more stable. The guide portion 334 can be a linear bearing.

[0046] Furthermore, the storage unit 300 includes a frame 340, which includes a first side 341 and a third side 343 arranged opposite to each other, and a second side 342 and a fourth side 344 arranged opposite to each other. The gripper assembly 100 is disposed on the first side 341 and the third side 343, and the symmetrically arranged gripper assembly 100 can stably support the tray 10. The drive assembly 200 is disposed on the second side 342 and / or the fourth side 344. The two sets of drive assemblies 200 can be disposed on the second side 342 or the second side 344 simultaneously, or they can be disposed on the second and fourth sides respectively, and can be flexibly arranged according to the space around the storage device. The first side 341 and the third side 343 correspond to the long side 102 of the tray 10, and the second side 342 and the fourth side 344 correspond to the short side 103 of the tray 10. When the storage device 2 is applied in processing equipment, such as a semiconductor cutting and sorting machine, the storage device is placed with the second side or the fourth side facing outward, that is, the side with the smaller width facing outward, thereby saving the length (X direction) dimension of the equipment and reserving space for other downstream devices. When multiple storage devices 2 are required to be used simultaneously, they are arranged adjacent to each other. The first side 341 and the third side 343 of the adjacent storage sections 300 are arranged opposite each other, while the second side 342 or the fourth side 344 can face outwards, so the drive assembly 200 will not be obstructed. If the drive assembly 200 is located on the first or third side, it will be obstructed by the adjacent storage section 300, making it inconvenient for the installation, debugging, and maintenance of the drive assembly 200. In addition, the gripper assembly 100 and the drive assembly 200 are respectively arranged around the frame 340, which can make their distribution more uniform and the weight distribution of the frame more balanced. The second side 342 or the fourth side 344 is provided with a discharge port 345, which is arranged opposite to the drive assembly 200. In this embodiment, it is located on the fourth side 344. The discharge port 345 is provided with an openable baffle 360 ​​for closing or opening the discharge port 345. The tray 10 inside the cavity 310 can be removed through the discharge port 345. One end of the baffle 360 ​​is pivotally connected to the frame 340, allowing it to rotate for easy opening or closing. The tray is removed manually, eliminating the need for additional mechanisms such as guide rails. This avoids damage to guide rails and other components over time, preventing the processing equipment from becoming unusable and simplifying the overall structure of the storage device for easier maintenance.

[0047] Furthermore, the storage unit 300 is equipped with a sensor 350, which is electrically connected to the control module. Specifically, the sensor 350 is a through-beam photoelectric sensor, with two sensors respectively positioned opposite each other on the first side 341 and the third side 343. When the lifting plate 320 carrying the tray descends, the tray 10 blocks the optical path between the two sensors. When the tray 10 descends below the optical path, the optical paths of the two sensors are connected again, sensing a signal, thereby determining that the tray has descended to its designated position. The control module then controls the lifting assembly to stop, and the lifting plate 320 stops. Through the above technical solution, the sensor can determine the descending position of the lifting plate, and then the control module can control the position of the lifting plate 320. When there are fewer trays on the lifting plate, the descent stroke of the lifting plate is shorter; the more trays on the lifting plate, the longer its descent stroke. Thus, the descent stroke can be controlled according to the number of trays, eliminating the need to rise from the bottom of the receiving cavity to the opening each time, reducing the movement path of the lifting plate.

[0048] In the above embodiments one and two, during the working process, depending on the different working environments, some of the technical implementation methods of embodiments one and two can be combined or replaced.

[0049] The technical principles of this utility model have been described above in conjunction with specific embodiments. However, it should be noted that these descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, other specific embodiments or equivalent substitutions of this utility model that can be conceived by those skilled in the art without creative effort will all fall within the scope of protection of this utility model.

Claims

1. A feeding mechanism, characterized in that, include: A gripper assembly and a drive assembly connected to the gripper assembly, the drive assembly driving the gripper assembly to switch between an open state and a closed state, the drive assembly including a driver, a push rod, a base and an elastic element, the push rod passing through the base and connected to the gripper assembly, the elastic element being disposed between the push rod and the base, the output shaft of the driver being floatingly connected to the push rod, the push rod and the output shaft being able to move relative to each other, when the output shaft extends, the drive push rod is lifted, the gripper assembly opens, when the output shaft retracts, the elastic element drives the push rod to retract, the gripper assembly closes.

2. The feeding mechanism according to claim 1, characterized in that, The gripper assembly includes grippers and a rotating shaft. The grippers are mounted on the rotating shaft, and a lever is provided at one end of the rotating shaft. A push rod is correspondingly provided with the lever, and the lever moves when the push rod is raised.

3. The feeding mechanism according to claim 2, characterized in that, The gripper is disposed in the gripper seat, and the gripper seat is provided with an elastic reset element. The gripper is kept in a closed state by the elastic reset element. And / or, several gripper seats are spaced apart on the rotating shaft.

4. The feeding mechanism according to claim 1, characterized in that, The base has a through hole and a sleeve, and the top rod passes through the sleeve; And / or, the elastic element is sleeved on the top rod and located between the retaining ring of the top rod and the base; And / or, the actuator is a cylinder and the elastic element is a spring.

5. A storage device, comprising a storage section having a receiving cavity, the opening of which is provided with a feeding mechanism for receiving a pallet, characterized in that, The feeding mechanism is the feeding mechanism described in any one of claims 1 to 4, and the gripper assembly is used to receive the pallet.

6. The storage device according to claim 5, characterized in that, The cavity is equipped with a lifting plate, which supports the tray. The lifting plate is connected to a lifting assembly, which drives the lifting plate to move within the cavity.

7. The storage device according to claim 6, characterized in that, The lifting assembly includes a servo motor and an electric cylinder connected to the servo motor. The electric cylinder is connected to the lifting plate, and the lifting plate is connected to the guide rod. The guide rod passes through the guide portion inside the receiving cavity. And / or, the gripper assemblies are disposed opposite each other on both sides of the opening.

8. The storage device according to claim 5, characterized in that, The storage unit includes a frame, which includes a first side and a third side disposed opposite to each other, and a second side and a fourth side disposed opposite to each other. The gripper assembly is disposed on the first side and the third side, and the drive assembly is disposed on the second side and / or the fourth side.

9. The storage device according to claim 8, characterized in that, The first and third sides correspond to the long side of the tray, and the second and fourth sides correspond to the short side of the tray. When several storage devices are arranged adjacent to each other, the first and third sides of adjacent storage units are arranged opposite each other.

10. The storage device according to claim 8, characterized in that, The second or fourth side is provided with a discharge port, and the discharge port is equipped with an openable and closable baffle; And / or, sensors are provided on the first side and the third side to determine the lowering position of the lifting plate.

Images