Thin pneumatic clamping mechanism

Abstract

The utility model discloses a thin pneumatic clamping mechanism. The thin pneumatic clamping mechanism comprises a linear driving air cylinder, a clamping air cylinder and a clamping jaw module which are sequentially arranged in the horizontal direction. The linear driving cylinder is used for driving the clamping cylinder to drive the clamping jaw module to do reciprocating motion along a straight line; the clamping jaw module comprises a push rod connected to the power output end of the clamping air cylinder, two swing arms connected to one end of the push rod and two clamping jaws symmetrically arranged up and down. One end of each swing arm is rotationally connected with one clamping jaw, and the other end is rotationally connected with the push rod; the clamping air cylinder is used for driving the push rod to do telescopic motion so as to drive the two clamping jaws to be opened or closed through the two swing arms. The utility model integrates high precision, high rigidity and ultra-thinness, can bear higher torque and load, can adapt to narrow working space, provides a linear reciprocating motion and clamping integrated function, and can ensure the action stability.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment technology, and in particular to a thin pneumatic clamping mechanism. Background Technology

[0002] Pneumatic clamping mechanisms are widely used in mold manufacturing, automation equipment, optical measuring instruments, the 3C industry, and the semiconductor industry. With market development and the increasing demands for precision machining and miniaturized equipment, pneumatic clamping mechanisms are evolving towards smaller size, higher precision, and greater stability. Existing pneumatic clamping mechanisms suffer from insufficient precision, inadequate rigidity, and unsatisfactory slim design, which urgently need to be addressed. Utility Model Content

[0003] The purpose of this invention is to provide a thin pneumatic clamping mechanism that integrates high precision, high rigidity, and ultra-thin design. It can withstand higher torque and load, adapt to confined working spaces, provide linear reciprocating motion and clamping integrated functions, and ensure the stability of its operation.

[0004] To achieve the above objectives, the following technical solution is adopted:

[0005] A thin pneumatic clamping mechanism includes a linear drive cylinder, a clamping cylinder, and a gripper module arranged sequentially along a horizontal direction. The linear drive cylinder drives the clamping cylinder to move the gripper module in a linear reciprocating motion. The gripper module includes a push rod connected to the power output end of the clamping cylinder, two swing arms connected to one end of the push rod, and two grippers arranged symmetrically in an upper and lower position. One end of each swing arm is rotatably connected to a gripper, and the other end is rotatably connected to the push rod. The clamping cylinder drives the push rod to extend and retract, so that the two swing arms drive the two grippers to open or close.

[0006] Preferably, each gripper extends horizontally with a gripping arm, and the middle of the gripping arm is rotatably connected to the gripping cylinder; an elastic element is provided between one end of each gripping arm and the middle of the gripping cylinder, and the elastic element is arranged vertically so that the two grippers remain in a normally open state.

[0007] Preferably, the clamping cylinder includes a first cylinder and a first piston assembly disposed within the first cylinder; the first piston assembly includes a first piston, a first piston rod connected to the first piston, and a bushing for guiding the movement of the first piston rod; the first piston rod moves through the bushing and is connected to a push rod; the two ends of the elastic member abut against one end of the clamping arm and the outer side of the bushing.

[0008] Preferably, the linear drive cylinder includes a second cylinder barrel and three second piston assemblies arranged parallel to each other within the second cylinder barrel; the three second piston assemblies are arranged sequentially in the vertical direction.

[0009] Preferably, the top of the linear drive cylinder is provided with a linear guide module, and the linear guide module is arranged along the length direction of the linear drive cylinder; the linear guide module includes a sliding block fixed to the linear drive cylinder and a guide block connected to the power output end of the linear drive cylinder; a plurality of set screws are provided between the sliding block and the guide block.

[0010] Preferably, the top of the linear guide module is provided with a stroke detection module, and the stroke detection module is arranged along the length direction of the linear drive cylinder; the stroke detection module includes a moving rod fixed on the guide block, a detection block provided at one end of the moving rod, and a positioning sensor at each end of the top of the slide block.

[0011] Preferably, the guide block includes a guide rail arranged along the length of the linear drive cylinder, a guide rail fixing plate disposed on the outer side of the guide rail, and a front connecting plate perpendicularly disposed at one end of the guide rail fixing plate; one side wall of the front connecting plate is connected to the power output end of the linear drive cylinder, and the opposite side wall is connected to the clamping cylinder via a connecting plate.

[0012] Preferably, the push rod and the two swing arms are connected in a Y-shaped structure that is placed laterally.

[0013] By adopting the above solution, the beneficial effects of this utility model are:

[0014] This utility model provides a thin pneumatic clamping mechanism that integrates high precision, high rigidity, and ultra-thin design. It can withstand higher torque and load, adapt to narrow working spaces, provide linear reciprocating motion and clamping integrated functions, and ensure the stability of its operation.

[0015] 1) By sequentially arranging the linear drive cylinder, clamping cylinder, and gripper module along the horizontal direction, and sequentially placing the linear guide module and stroke detection module on top of the linear drive cylinder, the pneumatic clamping mechanism can be made thin.

[0016] 2) The gripper module adopts a push rod and swing arm structure, which enables the gripper to perform lever movement to clamp the workpiece, further saving the installation space of the pneumatic clamping mechanism;

[0017] 3) By setting an elastic element between one end of the clamping arm and the middle of the clamping cylinder, the two jaws are kept in a normally open state, which facilitates quick clamping of the workpiece.

[0018] 4) The linear drive cylinder achieves a three-fold output effect by setting three second piston assemblies, and the three second piston assemblies are arranged in sequence in the vertical direction without affecting the thin structure of the pneumatic clamping mechanism.

[0019] 5) Several set screws are set in the linear guide module to adjust the gap between the slide block and the guide block and to apply preload, so as to improve the rigidity of the guide rail and eliminate the gap.

[0020] 6) By setting up a stroke detection module, the linear reciprocating motion stroke of the gripper module can be accurately detected. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present utility model;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is a perspective view of the push rod and swing arm of this utility model;

[0024] The following are explanations of the labels in the attached diagram:

[0025] 1—Linear drive cylinder, 2—Clamping cylinder,

[0026] 3—Gripper module, 4—Linear guide module

[0027] 5—Stroke detection module; 6—Connecting plate;

[0028] 11—Second cylinder barrel, 12—Second piston assembly,

[0029] 21—First cylinder barrel, 22—First piston assembly,

[0030] 31—Push rod, 32—Swing arm,

[0031] 33—gripper, 34—gripper arm,

[0032] 35—Elastic element, 41—Slide block,

[0033] 42—Guide block, 43—Setting screw,

[0034] 51—Moving rod, 52—Detection block,

[0035] 53—Position sensor. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0039] Reference Figures 1 to 3 As shown, this utility model provides a thin pneumatic clamping mechanism, including a linear drive cylinder 1, a clamping cylinder 2, and a gripper module 3 arranged sequentially along a horizontal direction. The linear drive cylinder 1 drives the clamping cylinder 2 to drive the gripper module 3 to reciprocate in a linear motion. The gripper module 3 includes a push rod connected to the power output end of the clamping cylinder 2, two swing arms 32 connected to one end of the push rod 31, and two grippers 33 arranged symmetrically in a vertical position. One end of each swing arm 32 is rotatably connected to a gripper 33, and the other end is rotatably connected to the push rod 31. The clamping cylinder 2 drives the push rod 31 to extend and retract, so that the two grippers 33 are opened or closed via the two swing arms 32. In a specific embodiment, the push rod 31 and the two swing arms 32 are connected in a Y-shaped structure placed horizontally.

[0040] Each gripper 33 has a gripping arm 34 extending horizontally, and the middle part of the gripping arm 34 is rotatably connected to the gripping cylinder 2; an elastic element 35 is provided between one end of each gripping arm 34 and the middle part of the gripping cylinder 2, and the elastic element 35 is arranged vertically so that the two grippers 33 remain in a normally open state.

[0041] The clamping cylinder 2 includes a first cylinder 21 and a first piston assembly 22 disposed within the first cylinder 21. The first piston assembly 22 includes a first piston, a first piston rod connected to the first piston, and a bushing for guiding the movement of the first piston rod. The first piston rod moves through the bushing and connects to a push rod 31. The two ends of the elastic element 35 abut against one end of the clamping arm 34 and the outer side of the bushing. The clamping cylinder 2 is powered by an air source to drive the first piston assembly 22 to reciprocate within the first cylinder 21, causing the two grippers 33 to perform a lever clamping motion. The elastic element 35 ensures that the two grippers 33 are in a normally open state.

[0042] The linear drive cylinder 1 includes a second cylinder 11 and three second piston assemblies 12 arranged parallel to each other inside the second cylinder 11. The three second piston assemblies 12 are arranged in sequence in the vertical direction, which not only achieves three times the output force, but also meets the requirements of the thin structure design of the pneumatic clamping mechanism.

[0043] The linear drive cylinder 1 has a linear guide module 4 at its top, and the linear guide module 4 is arranged along the length direction of the linear drive cylinder 1. The linear guide module 4 includes a sliding block 41 fixed to the linear drive cylinder 1 and a guide rail block 42 connected to the power output end of the linear drive cylinder 1. A plurality of set screws 43 are provided between the sliding block 41 and the guide rail block 42. The linear guide module 4 adopts a cross roller guide assembly, and a plurality of rollers are arranged crosswise between the guide rails of the sliding block 41 and the guide rail block 42. Further, a plurality of set screws 43 are spaced apart along the length direction of the linear guide module 4. After passing through the sliding wall of the sliding block 41, the set screws 43 are pressed against the guide rail to adjust the gap between the sliding block 41 and the guide rail block 42 and to apply preload between the guide rail and the rollers, which can improve the rigidity of the guide rail and eliminate the gap.

[0044] The linear guide module 4 is equipped with a stroke detection module 5 at its top, and the stroke detection module 5 is arranged along the length direction of the linear drive cylinder 1. The stroke detection module 5 includes a moving rod 51 fixed on the guide block 42, a detection block 52 located at one end of the moving rod 51, and a positioning sensor 53 located at each end of the top of the slide block 41. Please continue to refer to Figure 2 Specifically, the positioning sensor 53 is an infrared sensor. When the moving rod 51 drives the detection block 52 to block the infrared light emitted by the infrared sensor on the left, the gripper module 3 retracts into position; when the moving rod 51 drives the detection block 52 to block the infrared light emitted by the infrared sensor on the right, the gripper module 3 extends into position. The linear drive cylinder 1, through an air source, drives the second piston assembly 12 to perform linear reciprocating motion in the second cylinder 11, and the linear guide module 4 ensures the direction and accuracy of its motion.

[0045] The guide rail block 42 includes a guide rail arranged along the length of the linear drive cylinder 1, a guide rail fixing plate disposed on the outer side of the guide rail, and a front connecting plate perpendicularly disposed at one end of the guide rail fixing plate; one side wall of the front connecting plate is connected to the power output end of the linear drive cylinder 1, and the opposite side wall is connected to the clamping cylinder 2 via a connecting plate 6. The clamping cylinder 2 and the linear drive cylinder 1 are connected together through the connecting plate 6 and the front connecting plate to drive the gripper module 3 to perform linear reciprocating motion.

[0046] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the utility model and are not intended to limit the implementation of this utility model. For those skilled in the art, various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A thin pneumatic clamping mechanism, characterized in that, The device includes a linear drive cylinder, a clamping cylinder, and a gripper module arranged sequentially along a horizontal direction. The linear drive cylinder drives the clamping cylinder to move the gripper module in a linear reciprocating motion. The gripper module includes a push rod connected to the power output end of the clamping cylinder, two swing arms connected to one end of the push rod, and two grippers arranged symmetrically in an upper and lower position. One end of each swing arm is rotatably connected to a gripper, and the other end is rotatably connected to the push rod. The clamping cylinder drives the push rod to extend and retract, so that the two grippers can be opened or closed via the two swing arms.

2. The thin pneumatic clamping mechanism according to claim 1, characterized in that, Each gripper extends horizontally and has a gripping arm, with the middle of the gripping arm rotatably connected to the gripping cylinder; an elastic element is provided between one end of each gripping arm and the middle of the gripping cylinder, and the elastic element is arranged vertically so that the two grippers remain in a normally open state.

3. The thin pneumatic clamping mechanism according to claim 2, characterized in that, The clamping cylinder includes a first cylinder barrel and a first piston assembly disposed within the first cylinder barrel; the first piston assembly includes a first piston, a first piston rod connected to the first piston, and a bushing for guiding the movement of the first piston rod; the first piston rod moves through the bushing and is connected to a push rod; the two ends of the elastic element abut against one end of the clamping arm and the outer side of the bushing.

4. The thin pneumatic clamping mechanism according to claim 1, characterized in that, The linear drive cylinder includes a second cylinder barrel and three second piston assemblies arranged parallel to each other within the second cylinder barrel; the three second piston assemblies are arranged sequentially in the vertical direction.

5. The thin pneumatic clamping mechanism according to claim 1, characterized in that, The linear drive cylinder has a linear guide module on its top, and the linear guide module is arranged along the length direction of the linear drive cylinder; the linear guide module includes a sliding block fixed to the linear drive cylinder and a guide block connected to the power output end of the linear drive cylinder; a number of set screws are provided between the sliding block and the guide block.

6. The thin pneumatic clamping mechanism according to claim 5, characterized in that, The linear guide module is provided with a stroke detection module at its top, and the stroke detection module is arranged along the length direction of the linear drive cylinder; the stroke detection module includes a moving rod fixed on the guide block, a detection block at one end of the moving rod, and a positioning sensor at each end of the top of the slide block.

7. The thin pneumatic clamping mechanism according to claim 5, characterized in that, The guide block includes a guide rail arranged along the length of the linear drive cylinder, a guide rail fixing plate disposed on the outer side of the guide rail, and a front connecting plate perpendicularly disposed at one end of the guide rail fixing plate; one side wall of the front connecting plate is connected to the power output end of the linear drive cylinder, and the opposite side wall is connected to the clamping cylinder via a connecting plate.

8. The thin pneumatic clamping mechanism according to claim 1, characterized in that, The push rod and the two swing arms are connected in a Y-shaped structure that is placed horizontally.

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