Slit flexible chuck

Abstract

A connecting part is made of an elastic material, the connecting part comprises a driving cavity, an upper connecting plate is arranged on the upper portion of the connecting part, a communication opening communicated with the driving cavity is formed in the upper connecting plate, the driving cavity comprises a cavity bottom wall and a cavity side wall, and the cavity bottom wall is provided with a through hole communicated with the driving cavity. The thickness of the cavity bottom wall of the driving cavity is smaller than that of the cavity side wall or the elastic modulus of the cavity bottom wall is smaller than that of the cavity side wall, two flexible finger parts are connected to the lower portion of the connecting part, and the finger roots of the flexible finger parts are connected with the cavity bottom wall. The flexible chuck can be suitable for clamping an object or a plate-shaped object in a narrow space.

Description

Technical Field

[0001] The utility model relates to a flexible chuck, belongs to the technical field of flexible clamping, and particularly relates to a slit flexible chuck. Background Art

[0002] In the field of industrial automation, the grasping action at the end of the robot arm is mainly performed by a rigid robot claw or a vacuum suction cup. However, it is difficult for a rigid robot claw to achieve non-destructive grasping of soft and fragile objects because the force is difficult to control. The vacuum suction cup is difficult to adapt to irregular objects with rough surfaces and openings during transportation. This leads to limitations in the application scenarios of both. Flexible mechanical fingers use elastic materials and can grasp soft and fragile objects without damaging the objects themselves. For example, the applicant previously applied for a patent document with application number CN202320785989.6, which discloses a reinforced flexible clamp. This flexible clamp can flexibly clamp some objects, but it is difficult to clamp some objects in a small space or plate-like objects, especially for some plate-like objects arranged at intervals. It is not well applicable. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a slit flexible clamp, which can be suitable for clamping objects in a narrow space or plate-shaped objects.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a slit flexible chuck, a connecting part made of elastic material, the connecting part includes a driving chamber, an upper connecting plate is arranged on the upper part of the connecting part, and a connecting port communicating with the driving chamber is arranged on the upper connecting plate, the driving chamber includes a cavity bottom wall and a cavity side wall, the thickness of the cavity bottom wall of the driving chamber is smaller than the thickness of the cavity side wall or the elastic modulus of the cavity bottom wall is smaller than the elastic modulus of the cavity side wall, two flexible fingers are connected to the bottom of the connecting part, and the heels of the flexible fingers are connected to the cavity bottom wall.

[0005] As a preferred solution, the cavity bottom wall is arched toward the connecting port to form an arched portion, and the outer wall surface of the arched portion of the cavity bottom wall forms a groove structure with an opening facing downward between the two flexible fingers.

[0006] As a preferred solution, the cavity bottom wall is provided with an inclined portion connected to the cavity side wall, and a reinforcing connection block is provided between the outside of the cavity bottom wall and the flexible finger.

[0007] As a preferred solution, the flexible finger has a built-in reinforcement structure.

[0008] As a preferred solution, the reinforcement structure includes a reinforcement plate embedded in the flexible finger.

[0009] As a preferred solution, the reinforcing plate is provided with a reinforcing connection structure for increasing the bonding strength between the reinforcing plate and the flexible fingers.

[0010] As a preferred solution, the reinforcing connection structure includes a rough structure arranged on the plate surface of the reinforcing plate, and the rough structure is a grid rough surface or a toothed rough surface.

[0011] As a preferred solution, the reinforced connection structure includes a plurality of hollow holes arranged on the reinforcing plate, and the flexible fingers are provided with positioning columns inserted into the hollow holes.

[0012] As a preferred solution, a plurality of protrusions are arranged at intervals on the sides of the reinforcing plate.

[0013] As a preferred solution, the flexible fingers are plate-shaped flexible fingers.

[0014] After adopting the above technical scheme, the effect of the utility model is as follows: due to a slit flexible chuck, a connecting part is made of elastic material, the connecting part includes a driving chamber, an upper connecting plate is arranged on the upper part of the connecting part, and a connecting port communicating with the driving chamber is arranged on the upper connecting plate, the driving chamber includes a cavity bottom wall and a cavity side wall, the thickness of the cavity bottom wall of the driving chamber is less than the thickness of the cavity side wall or the elastic modulus of the cavity bottom wall is less than the elastic modulus of the cavity side wall, two flexible fingers are connected below the connecting part, and the heels of the flexible fingers are connected to the cavity bottom wall. Therefore, since the heels of the flexible fingers are connected to the cavity bottom wall, the spacing between the flexible fingers is smaller, which can be suitable for the slit. The flexible chuck can clamp narrow objects. At the same time, when the flexible chuck is connected to the vacuum system through the connecting port, negative pressure is generated inside the flexible chuck, and the middle part of the bottom wall of the cavity is deformed upward, thereby driving the flexible fingers to move closer to each other to clamp the object. Of course, when the flexible chuck is connected to the positive pressure system, the internal pressure of the flexible chuck is positive, and the bottom wall of the cavity will be deformed downward. At this time, the flexible fingers will open, and the object can be clamped from the inside out. The flexible chuck can be suitable for clamping objects or plate-like objects in a narrow space, such as memory sticks or solid-state hard drives. Such plate-like objects are generally placed in a loading box and arranged at intervals. The flexible chuck is very suitable for reaching into the gap to clamp memory sticks or solid-state hard drives.

[0015] Furthermore, since the cavity bottom wall is arched toward the connecting port to form an arched portion, the outer wall surface of the arched portion of the cavity bottom wall forms a groove structure with an opening facing downward between the two flexible fingers. Therefore, the arched portion can make the distance between the flexible fingers closer. At the same time, the arched portion can better pull the flexible fingers together under negative pressure, and can also better open the flexible fingers under positive pressure, so that the opening angle of the flexible fingers is larger and the opening force is greater.

[0016] Since the cavity bottom wall is provided with an inclined portion connected to the cavity side wall, a reinforcing connecting block is provided between the outside of the cavity bottom wall and the flexible finger. The reinforcing connecting block can increase the pulling force between the cavity bottom wall and the flexible finger, thereby improving the supporting force of the flexible finger.

[0017] Furthermore, since the flexible fingers are provided with a built-in reinforcement structure, the reinforcement structure includes a reinforcement plate embedded in the flexible fingers. The reinforcement plate can be used to improve the strength of the flexible fingers, thereby increasing the clamping force.

[0018] Furthermore, since the reinforcing plate is provided with a reinforcing connection structure for increasing the bonding strength between the reinforcing plate and the flexible fingers, the reinforcing connection structure includes a rough structure arranged on the plate surface of the reinforcing plate, and the rough structure is a grid rough surface or a serrated rough surface. The bonding strength can be improved and delamination can be avoided through the network rough surface and the serrated rough surface.

[0019] Furthermore, since the reinforced connection structure includes a plurality of hollow holes arranged on the reinforcing plate, the flexible fingers are provided with positioning columns inserted into the hollow holes. Similarly, the hollow holes and positioning columns can also be used to improve the bonding strength between the reinforcing plate and the flexible fingers, and the positioning columns can be inserted into the hollow holes first during molding to achieve the positioning of the reinforcing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model;

[0022] Figure 2 yes Figure 1 The main view;

[0023] Figure 3 yes Figure 1 Left view of;

[0024] Figure 4 yes Figure 3 Structural cross-section along AA;

[0025] Figure 5 This is a schematic structural diagram of a reinforcement plate according to a first embodiment of the utility model;

[0026] Figure 6 This is a three-dimensional diagram of the second embodiment of the utility model;

[0027] In the attached drawings: 1. connecting part; 2. upper connecting plate; 3. driving chamber; 31. arched part; 32. inclined part; 4. flexible finger; 5. groove structure; 6. reinforced connecting block; 7. reinforcing plate; 8. positioning column; 9. protrusion; 10. connecting port; 11. strip-shaped hollow hole. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below through specific embodiments. Embodiment 1

[0029] like Figure 1-5 As shown, a slit flexible chuck comprises a connecting portion 1 made of elastic material, the connecting portion 1 comprises a driving chamber 3, an upper connecting plate 2 is arranged on the upper portion of the connecting portion 1, a connecting port 10 communicating with the driving chamber 3 is arranged on the upper connecting plate 2, the driving chamber 3 comprises a cavity bottom wall and a cavity side wall, the thickness of the cavity bottom wall of the driving chamber 3 is smaller than the thickness of the cavity side wall or the elastic modulus of the cavity bottom wall is smaller than the elastic modulus of the cavity side wall, two flexible fingers 4 are connected to the bottom of the connecting portion 1, and the heels of the flexible fingers 4 are connected to the cavity bottom wall.

[0030] In this embodiment, the flexible finger 4 is a plate-shaped flexible finger 4, the cavity bottom wall arches toward the connecting port 10 to form an arched portion 31, and the outer wall surface of the arched portion 31 of the corresponding cavity bottom wall forms a groove structure 5 with an opening facing downward between the two flexible fingers 4, and the cavity bottom wall is provided with an inclined portion 32 connected to the cavity side wall, and a reinforcing connection block 6 is provided between the outside of the cavity bottom wall and the flexible finger 4, and the flexible finger 4 is built with a reinforcing structure, and the reinforcing structure includes a reinforcing plate 7 embedded in the flexible finger 4. Of course, according to different needs, the reinforcing structure can also be reinforcing ribs, etc.

[0031] The reinforcing plate 7 is provided with a reinforcing connection structure for increasing the bonding strength between the reinforcing plate 7 and the flexible finger 4, and the reinforcing connection structure includes a rough structure provided on the plate surface of the reinforcing plate 7, and the rough structure can be provided as a grid rough surface or a toothed rough surface. The reinforcing connection structure can also include a plurality of hollow holes provided on the reinforcing plate 7, and the flexible finger 4 is provided with a positioning column 8 inserted into the hollow hole. The reinforcing plate 7 in this embodiment is preferably directly coated in the flexible finger 4 by a glue injection coating process. The positioning column 8 can be inserted into the hollow hole first during molding to realize the positioning of the reinforcing plate 7.

[0032] A number of protrusions 9 are arranged at intervals on the sides of the reinforcing plate 7. In the present embodiment, the protrusions 9 are rectangular and arranged at equal intervals, and the protrusions 9 are arranged on three sides of the reinforcing plate 7, namely the left and right sides and the upper side, for strengthening the connection between the reinforcing plate 7 and the flexible finger 4. Of course, the arrangement and shape of the protrusions 9 can also be designed according to needs.

[0033] In this embodiment, the heels of the flexible fingers 4 are connected to the bottom wall of the cavity, and the spacing between the flexible fingers 4 is small, which is suitable for clamping narrow objects. At the same time, when the flexible clamp is connected to the vacuum system through the connecting port 10, when the vacuum system is under negative pressure, the flexible clamp drives the chamber 3 to be under negative pressure, and the middle part of the bottom wall of the cavity is deformed upward. The arched portion 31 can make the spacing between the flexible fingers 4 closer. At the same time, the arched portion 31 can better pull the flexible fingers 4 together under negative pressure, thereby driving the flexible fingers 4 to move closer to each other to clamp the object. Of course, when the flexible clamp is connected to the positive pressure system, the flexible clamp The driving chamber 3 inside the head is at positive pressure, and the bottom wall of the chamber will deform downward. At this time, the flexible fingers 4 will open, and the object can be clamped from the inside out. In addition, the flexible chuck can further increase the holding force of the flexible fingers 4 by reinforcing the connecting block 6 and the reinforcing plate 7. The flexible chuck is suitable for clamping objects or plate-like objects in a narrow space, such as memory sticks or solid-state hard drives. Such plate-like objects are generally placed in a loading box and arranged at intervals. The flexible chuck is very suitable for extending into the gap to clamp memory sticks or solid-state hard drives. Embodiment 2

[0034] like Figure 6 As shown, the reinforcing plate 7 in this embodiment is inserted later. Therefore, the basic structure of the flexible chuck in this embodiment is the same as that in the first embodiment, except that the flexible finger 4 is provided with a strip-shaped plug hole for convenient insertion of the reinforcing plate 7. The flexible chuck is first formed, and then glue is applied to the surface of the reinforcing plate 7 and inserted into the strip-shaped plug hole to complete the later assembly and fixation of the reinforcing plate 7. In this embodiment, the surface of the flexible finger 4 is also provided with a strip-shaped hollow hole 11 extending in the up-down direction, and the strip-shaped hollow hole 11 facilitates the forming of the strip-shaped plug hole. The solution in this embodiment can simplify the process difficulty.

[0035] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations to the technical solution of the present invention, without departing from the design spirit of the present invention, should fall within the scope of protection defined in the claims of the present invention.

Claims

1. A slit flexible chuck, wherein the connecting portion is made of elastic material, the connecting portion includes a driving chamber, an upper connecting plate is provided on the upper portion of the connecting portion, and a communication port communicating with the driving chamber is provided on the upper connecting plate, characterized in that: The driving chamber includes a chamber bottom wall and a chamber side wall. The thickness of the chamber bottom wall of the driving chamber is smaller than the thickness of the chamber side wall or the elastic modulus of the chamber bottom wall is smaller than the elastic modulus of the chamber side wall. Two flexible fingers are connected below the connecting portion, and the heels of the flexible fingers are connected to the chamber bottom wall.

2. A slit flexible chuck according to claim 1, characterized in that: The cavity bottom wall is arched toward the connecting port to form an arched portion, and the outer wall surface of the arched portion of the cavity bottom wall forms a groove structure with an opening facing downward between the two flexible fingers.

3. A slit flexible chuck as claimed in claim 2, characterized in that: The cavity bottom wall is provided with an inclined portion connected to the cavity side wall, and a reinforcing connection block is provided between the outside of the cavity bottom wall and the flexible finger portion.

4. A slit flexible chuck according to any one of claims 1 to 3, characterized in that: The flexible fingers have built-in reinforcement structures.

5. A slit flexible chuck as claimed in claim 4, characterized in that: The reinforcement structure includes a reinforcement plate embedded in the flexible fingers.

6. A slit flexible chuck as claimed in claim 5, characterized in that: The reinforcing plate is provided with a reinforcing connection structure for increasing the bonding strength between the reinforcing plate and the flexible fingers.

7. A slit flexible chuck as claimed in claim 6, characterized in that: The reinforcing connection structure includes a rough structure arranged on the plate surface of the reinforcing plate, and the rough structure is a grid rough surface or a toothed rough surface.

8. A slit flexible chuck as claimed in claim 7, characterized in that: The reinforcing connection structure comprises a plurality of hollow holes arranged on the reinforcing plate, and the flexible fingers are provided with positioning posts inserted into the hollow holes.

9. A slit flexible chuck as claimed in claim 5, characterized in that: A plurality of protrusions are arranged at intervals on the side of the reinforcing plate.

10. A slit flexible chuck as claimed in claim 9, characterized in that: The flexible fingers are plate-shaped flexible fingers.

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