Small simple pneumatic lever type clamping mechanism

Abstract

The utility model relates to a small and simple pneumatic lever type clamping mechanism. The two ends of the driving mechanism are connected with the fixing base, and the driving mechanism can slide in a reciprocating mode in the connecting direction of the driving mechanism and the fixing base; the transmission mechanism comprises a connecting rod and a rotating shaft, one end of the connecting rod is rotationally connected with the driving mechanism, the other end of the connecting rod is fixedly connected with the middle of the rotating shaft, two ends of the rotating shaft are rotationally connected with the fixed seat, and one end of the rotating shaft extends out of the fixed seat to be connected with the movable clamping jaw; the fixed clamping jaw is arranged on one side of the movable clamping jaw, and one end of the fixed clamping jaw is fixedly connected with the fixed base. According to the clamping mechanism, one clamping jaw is fixed, and the other clamping jaw is movable, when the clamping mechanism works, the fixed clamping jaw serves as a clamping reference, and compared with a traditional clamping mechanism, higher perpendicularity can be guaranteed when a grinding workpiece is clamped and fed; through mutual cooperation of the driving mechanism and the transmission mechanism, the chuck has larger clamping force, and clamping is more stable; and a larger clamping range can be achieved by replacing the fixed clamping jaw.

Description

Technical Field

[0001] The present application relates to the field of mechanical automation technology, and in particular to a small and simple pneumatic lever-type clamping mechanism. Background Art

[0002] Pneumatic grippers, also known as pneumatic jaws or pneumatic fingers, are actuators that use compressed air as a power source to grip or grasp workpieces. They are generally categorized by style as either Y-type or parallel grippers. Both Y-type and parallel grippers utilize two movable chucks to clamp the workpiece. This structure limits the size of workpieces it can hold, and precise positioning of the workpiece is difficult. Utility Model Content

[0003] Based on this, it is necessary to provide a small and simple pneumatic lever type clamping mechanism to overcome the defects mentioned in the above background technology.

[0004] A small and simple pneumatic lever type clamping mechanism, comprising:

[0005] Fixed seat;

[0006] A driving mechanism, both ends of which are connected to the fixing base, wherein the driving mechanism can slide back and forth along the direction in which it is connected to the fixing base;

[0007] The transmission mechanism includes a connecting rod and a rotating shaft, wherein one end of the connecting rod is rotatably connected to the driving mechanism and the other end is fixedly connected to the middle portion of the rotating shaft. Both ends of the rotating shaft are rotatably connected to a fixed seat, and one end extends from the fixed seat to be connected to the movable clamping claw;

[0008] The fixed clamping jaw is arranged on one side of the movable clamping jaw and one end of the fixed clamping jaw is fixedly connected to the fixing seat.

[0009] As a preferred embodiment of the small and medium-sized simple pneumatic lever-type clamping mechanism of the present invention, the fixed seat includes a base, which is provided with a rotating cavity, and rotating holes connected to the rotating cavity are provided on both sides of the rotating cavity. Fixed blocks are provided at both ends of the base, and a pair of the fixed blocks are symmetrically arranged. Fixed cavities are provided at corresponding positions on opposite sides of the pair of fixed blocks, one of the fixed blocks is detachably connected to the base, and the other fixed block is fixedly or detachably connected to the base.

[0010] As a preferred embodiment of the small and medium-sized simple pneumatic lever-type clamping mechanism of the present invention, the fixing cavity is provided with an air hole.

[0011] As a preferred embodiment of the small and medium-sized simple pneumatic lever-type clamping mechanism of the utility model, the driving mechanism is a cylinder, which is arranged between a pair of fixed blocks. The cylinder includes a piston, the end of the piston is connected to the fixed cavity, and an air channel is provided at the end thereof. The air channel is connected to the air hole, and a cylinder body is provided around the piston. The cylinder body covers part of the piston therein, and a positioning groove is provided around the circumference of the cylinder body at one end.

[0012] As a preferred embodiment of the small and medium-sized simple pneumatic lever-type clamping mechanism of the present invention, the connecting rod is U-shaped, and a positioning pin is provided on the opposite sides of its two arms, one end of which is fixed to the connecting rod and the other end extends into the positioning groove.

[0013] As a preferred embodiment of the small and medium-sized simple pneumatic lever-type clamping mechanism of the present invention, the clamping end of the fixed clamping jaw is stepped.

[0014] Beneficial effects of the utility model:

[0015] The two clamping jaws of the utility model are one fixed and the other movable. When working, the fixed clamping jaw serves as the clamping reference. Compared with the traditional clamping mechanism, it can ensure a higher verticality when clamping and loading the grinding workpiece; through the mutual cooperation of the driving mechanism and the transmission mechanism, the chuck has a greater clamping force and the clamping is more stable; by replacing the fixed clamping jaw, a larger clamping range can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is one of the structural diagrams of the clamping mechanism in the embodiment of the present application;

[0018] Figure 2 This is the second structural diagram of the clamping mechanism in the embodiment of the present application;

[0019] Figure 3 This is a schematic structural diagram of the fixing seat in an embodiment of the present application;

[0020] Figure 4 This is one of the cross-sectional structural diagrams of the clamping mechanism in the embodiment of the present application;

[0021] Figure 5 This is the second schematic cross-sectional structure diagram of the clamping mechanism in the embodiment of the present application;

[0022] Description of reference numerals:

[0023] 1. Fixed seat; 11. Base; 12. Rotating cavity; 13. Rotating hole; 14. Fixed block; 15. Fixed cavity; 16. Air hole;

[0024] 2. Driving mechanism; 21. Piston; 22. Airway; 23. Cylinder; 24. Positioning groove;

[0025] 3. Transmission mechanism; 31. Connecting rod; 32. Rotating shaft; 33. Positioning pin;

[0026] 4. Movable clamping jaws;

[0027] 5. Fix the clamping jaws. DETAILED DESCRIPTION

[0028] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0031] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0032] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0034] Example

[0035] This embodiment provides a small and simple pneumatic lever type clamping mechanism, such as Figure 1 and Figure 2 As shown, it includes a fixed base 1, a drive mechanism 2, a transmission mechanism 3, a movable clamping jaw 4, and a fixed clamping jaw 5. The fixed base 1 is used to fix the clamping mechanism and provide mounting holes for the remaining workpieces. The drive mechanism 2 and transmission mechanism 3 are connected to the fixed base 1. When the drive mechanism 2 is working, it drives the transmission mechanism 3 to move in an arc, which drives the movable clamping jaw 4 to rotate. The remaining fixed clamping jaws 5 cooperate to clamp the workpiece. The drive mechanism 2, transmission mechanism 3, movable clamping jaw 4, and fixed clamping jaw 5 are arranged in a matching manner.

[0036] like Figure 3As shown, the fixing seat 1 includes a base 11, one side of the base 11 is connected to the device body, and a rotating chamber 12 for rotating the transmission mechanism 3 is provided inside the base 11. Rotating holes 13 connected to the rotating chamber 12 are provided at corresponding positions on both sides of the rotating chamber 12. The rotating holes 13 are used to fix the transmission mechanism 3. Fixed blocks 14 are provided at both ends of the base 11. A pair of the fixed blocks 14 are symmetrically arranged. Fixed chambers 15 for fixing the driving mechanism 2 are provided at corresponding positions on opposite sides of the pair of fixed blocks 14.

[0037] In this embodiment, one of the fixing blocks 14 is detachably connected to the base 11 , and the other fixing block 14 is fixedly or detachably connected to the base 11 , so as to facilitate the disassembly and assembly of the driving mechanism 2 .

[0038] In this embodiment, the fixing cavity 15 is provided with an air hole 16 communicating with the outside.

[0039] The driving mechanism 2 is a cylinder, which is arranged between a pair of fixed blocks 14. Figure 4 As shown, the cylinder includes a piston 21, the end of the piston 21 is airtightly connected to the fixed cavity 15, and an air channel 22 is provided at the end thereof. The air channel 22 is communicated with the air hole 16, and a cylinder body 23 is provided around the piston 21. The cylinder body 23 partially covers the piston 21 therein, and the cylinder body 23 can slide along the axial direction of the piston 21. A positioning groove 24 is provided around the circumference of one end of the cylinder body 23.

[0040] When the driving mechanism 2 is working, the air passage 22 at one end of the piston 21 takes in air through the air hole 16, and the air passage 22 at the other end discharges air through the air hole 16, driving the cylinder body 23 to move toward the other end, thereby driving the transmission mechanism 3 to rotate.

[0041] like Figure 5 As shown, the transmission mechanism 3 includes a connecting rod 31 and a rotating shaft 32. The connecting rod 31 is U-shaped, and a positioning pin 33 is provided on the opposite sides of its two arms. One end of the connecting rod 31 is fixed to the connecting rod 31, and the other end extends into the positioning groove 24. The bottom of the connecting rod 31 is located in the rotating chamber 12 and is connected to the rotating shaft 32. One end of the rotating shaft 32 passes through the rotating hole 13, the connecting rod 31 and the rotating hole 13 in sequence and is connected to the movable clamp 4. An oil-free bushing is sleeved at the connection between one end of the connecting rod and the rotating hole 13, and an oil-free bushing and a rotary spacer sleeve are sleeved at the connection between the other end of the connecting rod and the rotating hole 13 from the inside to the outside, and the rotating shaft 32 is pressed tightly by cooperating with the rotary spacer sleeve through a nut.

[0042] The connecting rod 31 rotates around the connection point with the rotating shaft 32 to drive the rotating shaft 32 to rotate, thereby driving the movable clamping jaw 4 to rotate.

[0043] The fixed jaw 5 is provided at one side of the movable jaw 4 and one end of the fixed jaw 5 is connected to the base 11 . The movable jaw 4 rotates to cooperate with the fixed jaw 5 to clamp the workpiece.

[0044] In this embodiment, the clamping end of the fixing clamping jaw 5 is stepped to facilitate fixing the workpiece.

[0045] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A small and simple pneumatic lever type clamping mechanism, characterized in that: include: Fixed seat; A driving mechanism, both ends of which are connected to the fixing base, wherein the driving mechanism can slide back and forth along the direction in which it is connected to the fixing base; The transmission mechanism includes a connecting rod and a rotating shaft, wherein one end of the connecting rod is rotatably connected to the driving mechanism and the other end is fixedly connected to the middle portion of the rotating shaft. Both ends of the rotating shaft are rotatably connected to a fixed seat, and one end extends from the fixed seat to be connected to the movable clamping claw; The fixed clamping jaw is arranged on one side of the movable clamping jaw and one end of the fixed clamping jaw is fixedly connected to the fixing seat.

2. The small and simple pneumatic lever type clamping mechanism according to claim 1 is characterized in that: The fixing seat includes a base, which is provided with a rotating cavity, and rotating holes connected to the rotating cavity are provided on both sides of the rotating cavity. Fixed blocks are provided at both ends of the base, and a pair of the fixed blocks are symmetrically arranged. Fixed cavities are provided at corresponding positions on opposite sides of the pair of fixed blocks, one of the fixed blocks is detachably connected to the base, and the other fixed block is fixedly or detachably connected to the base.

3. The small and simple pneumatic lever type clamping mechanism according to claim 2, characterized in that: The fixing cavity is provided with air holes.

4. The small and simple pneumatic lever type clamping mechanism according to claim 1, characterized in that: The driving mechanism is a cylinder, which is arranged between a pair of fixed blocks. The cylinder includes a piston, the end of the piston is connected to the fixed cavity, and an air channel is provided at the end of the piston. The air channel is connected to the air hole, and a cylinder body is provided around the piston. The cylinder body partially covers the piston, and a positioning groove is provided around the circumference of one end of the cylinder body.

5. The small and simple pneumatic lever type clamping mechanism according to claim 1 is characterized in that: The connecting rod is U-shaped, and a positioning pin is provided on the opposite sides of the two arms, one end of which is fixedly connected to the connecting rod and the other end of which extends into the positioning groove.

6. The small and simple pneumatic lever type clamping mechanism according to claim 1, characterized in that: The clamping end of the fixed clamping claw is in a step shape.

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