Pneumatic quick clamping mechanism for small parts and automobile main engine plant production line

Abstract

The utility model provides a pneumatic quick clamping mechanism for small parts and an automobile main engine plant production line, and relates to the technical field of clamps, the pneumatic quick clamping mechanism for the small parts comprises a fixed mounting plate, a telescopic cylinder, a connecting rod mechanism, a fixed supporting seat and a pressing claw, the fixed end of the telescopic cylinder is connected to the fixed mounting plate, and the fixed end of the connecting rod mechanism is connected to the pressing claw. The pressing claw is connected with the telescopic end of the telescopic cylinder through the connecting rod mechanism, the fixed supporting seat is connected to the fixed mounting plate, and a clamped small part is mounted on the fixed supporting seat. Compared with the prior art, the pneumatic quick clamping mechanism for the small parts has the advantages that the small parts are clamped by the connecting rod mechanism, the pneumatic quick clamping mechanism is compact and small, and particularly, a structure which only depends on magnet adsorption is replaced in a complex mechanism and a narrow space, so that the stability of equipment is greatly improved, and the failure rate of a production line is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a pneumatic quick clamping mechanism for small parts and a production line of an automobile main engine factory. Background Art

[0002] Automobile OEMs refer to manufacturers in the automobile manufacturing industry that are responsible for designing, developing and producing complete vehicles. These manufacturers usually have complete production lines that can manufacture everything from parts to complete vehicles.

[0003] Automobile OEMs usually work with parts suppliers to purchase various parts from them, and then assemble these parts into complete cars. On the production lines of automobile OEMs, various clamping mechanisms are used to ensure the quality and production efficiency of the cars.

[0004] However, currently, automobile OEMs mainly use mature standard structure cylinders such as clamping cylinders and pinning cylinders to clamp parts, or use methods such as magnet adsorption. The above methods have the following shortcomings:

[0005] 1. It takes up a large space, especially for small parts. The position of the welding gun needs to be considered. There is not much space for using the standard clamping cylinder, which can easily limit the welding posture of the robot and cannot guarantee the welding quality of the product;

[0006] 2. If the manufacturer's non-standard customized cylinder is used, the delivery cycle will be long and cannot meet the project node requirements;

[0007] 3. If magnetic adsorption is used, the disadvantage is that it is easy to shake during welding and the welding quality is unstable. Utility Model Content

[0008] The utility model aims to solve at least one of the above technical problems.

[0009] The utility model provides a pneumatic quick clamping mechanism for small parts, comprising: a fixed mounting plate, a telescopic cylinder, a connecting rod mechanism, a fixed support seat and a pressure claw, wherein the fixed end of the telescopic cylinder is connected to the fixed mounting plate, one end of the pressure claw is connected to the telescopic end of the telescopic cylinder through the connecting rod mechanism, the fixed support seat is connected to the fixed mounting plate, and the fixed support seat is used to install the clamped small parts;

[0010] When the telescopic end of the telescopic cylinder pushes the connecting rod mechanism, the connecting rod mechanism is used to drive the other end of the pressing claw to move toward the fixed support seat, so as to press the pressing claw tightly onto the clamped small part;

[0011] When the telescopic end of the telescopic cylinder pulls back the connecting rod mechanism, the connecting rod mechanism is used to drive the other end of the pressure claw to move away from the fixed support seat to separate the pressure claw from the clamped small part.

[0012] The pneumatic quick clamping mechanism for small parts provided by the utility model has, compared with the prior art, the following beneficial effects but not limited to:

[0013] The pneumatic quick clamping mechanism for small parts described in the utility model, when used, first installs the clamped small parts on the fixed support seat, and then pushes the connecting rod mechanism through the telescopic end of the telescopic cylinder to flip the connecting rod mechanism toward the fixed support seat, thereby pressing the pressure claws on the clamped small parts. After the welding operation of the clamped small parts is completed, the connecting rod mechanism is pulled back through the telescopic end of the telescopic cylinder to flip the connecting rod mechanism toward the direction away from the fixed support seat, thereby separating the pressure claws from the clamped small parts. Compared with the prior art, the pneumatic quick clamping mechanism for small parts of the utility model adopts a connecting rod mechanism to achieve the clamping of small parts, which has the advantage of being compact and small, especially in complex mechanisms and narrow spaces instead of structures that rely solely on magnet adsorption, greatly improving the stability of the equipment and effectively reducing the failure rate of the production line.

[0014] Optionally, the connecting rod mechanism includes a pressure arm, a U-shaped seat, a convex seat and an ear plate, the U-shaped seat is connected to the telescopic end of the telescopic cylinder, the convex seat is fixedly connected to the fixed mounting plate, one end of the pressure arm is rotatably connected to the U-shaped seat, one end of the ear plate is rotatably connected to the convex seat, the other end of the ear plate is rotatably connected to the other end of the pressure arm, and the pressure claw is detachably connected to the pressure arm.

[0015] Optionally, the pressing arm includes an arm body and a first protrusion and a second protrusion connected to both ends of the arm body, the first protrusion and the second protrusion are both perpendicular to the arm body, the pressing claw is detachably connected to the arm body, the first protrusion is rotatably connected to the U-shaped seat, and the second protrusion is rotatably connected to the ear plate.

[0016] Optionally, the pneumatic quick clamping mechanism for small parts also includes a first L-shaped bracket and a second L-shaped bracket, the first L-shaped bracket includes a first horizontal plate and a first vertical plate connected to each other, the first horizontal plate is detachably connected to the fixed mounting plate, the second L-shaped bracket includes a second horizontal plate and a second vertical plate connected to each other, the second vertical plate is detachably connected to the first vertical plate, and the fixed support seat is detachably connected to the second horizontal plate.

[0017] Optionally, the pneumatic quick clamping mechanism for small parts further comprises a first limit plate, wherein the first limit plate is detachably connected to the second L-shaped bracket, and the first limit plate is used to abut against the clamped small part.

[0018] Optionally, the pneumatic quick clamping mechanism for small parts also includes a second limit plate, which is detachably connected to the convex seat and / or the fixed mounting plate, and is used to abut against the clamped small parts. The second limit plate is arranged opposite to the first limit plate.

[0019] Optionally, the pneumatic quick clamping mechanism for small parts further comprises a proximity switch, which is disposed on the second L-shaped bracket and is used to detect whether the clamped small parts are on the fixed support seat.

[0020] Optionally, a through hole is opened on the fixed mounting plate, the telescopic cylinder is connected to the lower surface of the fixed mounting plate, and the telescopic end of the telescopic cylinder is used to pass through the through hole.

[0021] Optionally, the telescopic cylinder is a thin telescopic cylinder.

[0022] In addition, the utility model also provides a production line for an automobile main engine factory, comprising the pneumatic quick clamping mechanism for small parts as described above.

[0023] Since the technical improvements and technical effects of the automobile main engine factory production line are the same as those of the pneumatic quick clamping mechanism for small parts, the technical effects of the automobile main engine factory production line will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The structure diagram of the pneumatic quick clamping mechanism for small parts of the utility model embodiment is shown in FIG. Figure 1 ;

[0025] Figure 2 The structure diagram of the pneumatic quick clamping mechanism for small parts of the utility model embodiment is shown in FIG. Figure 2 ;

[0026] Figure 3 The structure diagram of the pneumatic quick clamping mechanism for small parts of the utility model embodiment is shown in FIG. Figure 3 ;

[0027] Figure 4 It is a structural schematic diagram of the connecting rod mechanism of an embodiment of the utility model.

[0028] Description of reference numerals:

[0029] 1. Fixed mounting plate; 11. Through hole; 2. Telescopic cylinder; 3. Connecting rod mechanism; 31. Pressure wall; 311. Arm body; 312. First protrusion; 313. Second protrusion; 32. U-shaped seat; 33. Convex seat; 34. Ear plate; 35. First axis; 36. Second axis; 37. Third axis; 4. Fixed supporting seat; 5. Pressure claw; 6. First L-shaped bracket; 61. First horizontal plate; 62. First vertical plate; 7. Second L-shaped bracket; 71. Second horizontal plate; 72. Second vertical plate; 8. First limit plate; 9. Second limit plate; 10. Proximity switch; 100. Clamped small parts. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] In the description of the present invention, the directions or positional relationships indicated by “upper”, “lower”, “left”, “right”, “top”, “bottom”, “front”, “back”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention. They do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0034] Moreover, the Z-axis in the accompanying drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z-axis (that is, the direction of the arrow of the Z-axis) represents the top, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents the bottom; the X-axis in the accompanying drawings represents the horizontal direction, that is, the left and right position, and the positive direction of the X-axis (that is, the direction of the arrow of the X-axis) represents the left, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents the right; the Y-axis in the accompanying drawings represents the longitudinal direction, that is, the front and back position, and the positive direction of the Y-axis (that is, the direction of the arrow of the Y-axis) represents the front, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents the back.

[0035] It should also be noted that the aforementioned Z-axis, X-axis and Y-axis are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0036] like Figures 1 to 2 As shown, the pneumatic quick clamping mechanism for small parts of the embodiment of the utility model comprises: a fixed mounting plate 1, a telescopic cylinder 2, a connecting rod mechanism 3, a fixed support seat 4 and a pressure claw 5, wherein the fixed end of the telescopic cylinder 2 is connected to the fixed mounting plate 1, one end of the pressure claw 5 is connected to the telescopic end of the telescopic cylinder 2 through the connecting rod mechanism 3, the fixed support seat 4 is connected to the fixed mounting plate 1, and the fixed support seat 4 is used to install the clamped small parts 100;

[0037] When the telescopic end of the telescopic cylinder 2 pushes the connecting rod mechanism 3, the connecting rod mechanism 3 is used to drive the other end of the pressing claw 5 to move toward the fixed support seat 4, so as to press the pressing claw 5 tightly onto the clamped small part 100;

[0038] When the telescopic end of the telescopic cylinder 2 pulls back the connecting rod mechanism 3 , the connecting rod mechanism 3 is used to drive the other end of the pressing claw 5 to move away from the fixed support seat 4 to separate the pressing claw 5 from the clamped small part 100 .

[0039] In this embodiment, combined with the attached Figure 1 and attached Figure 2 As shown, when in use, the clamped small part 100 is first mounted on the fixed support seat 4, and then the connecting rod mechanism 3 is pushed by the telescopic end of the telescopic cylinder 2 (such as a cylinder) to make the connecting rod mechanism 3 move toward the direction close to the fixed support seat 4 (see FIG. Figure 1 or attached Figure 2 The clamping claw 5 is turned over in the opposite direction of the X-axis, thereby pressing the clamping claw 5 on the clamped small part 100. After the welding operation of the clamped small part 100 is completed, the connecting rod mechanism 3 is pulled back by the telescopic end of the telescopic cylinder 2, so that the connecting rod mechanism 3 is moved away from the fixed support seat 4 (attached Figure 1 or attached Figure 2 The pneumatic quick clamping mechanism for small parts of the utility model adopts a connecting rod mechanism to clamp small parts, which has the advantage of being compact and small, and can replace the structure that only relies on magnet adsorption in complex mechanisms and narrow spaces, thereby greatly improving the stability of the equipment and effectively reducing the failure rate of the production line.

[0040] Optionally, the connecting rod mechanism 3 includes a pressure arm 31, a U-shaped seat 32, a convex seat 33 and an ear plate 34, the U-shaped seat 32 is connected to the telescopic end of the telescopic cylinder 2, the convex seat 33 is fixedly connected to the fixed mounting plate 1, one end of the pressure arm 31 is rotatably connected to the U-shaped seat 32, one end of the ear plate 34 is rotatably connected to the convex seat 33, the other end of the ear plate 34 is rotatably connected to the other end of the pressure arm 31, and the pressure claw 5 is detachably connected to the pressure arm 31.

[0041] In this embodiment, combined with the attached Figures 1 to 4 As shown, the U-shaped seat 32 can be detachably connected to the telescopic end of the telescopic cylinder 2 by bolts, the convex seat 33 can be detachably connected to the fixed mounting plate 1 by bolts, one end of the pressure arm 31 can be rotatably connected to the U-shaped seat 32 by a first shaft 35, one end of the ear plate 34 can be rotatably connected to the convex seat 33 by a second shaft 36, and the other end of the ear plate 34 can be rotatably connected to the other end of the pressure arm 31 by a third shaft 37, and the pressure claw 5 can be detachably connected to the upper surface of the pressure arm 31 by bolts (see Figure 1). Figure 1 or attached Figure 2 or attached Figure 3 The pneumatic quick clamping mechanism for small parts of the utility model adopts a connecting rod mechanism to clamp small parts compared with the prior art, which can not only ensure the clamping force required for welding, but also meet the requirements of use in narrow spaces, leaving more space for the welding gun to pass through, thereby achieving the purpose of improving the welding posture of the robot and improving the welding quality of the product.

[0042] Optionally, the pressing arm 31 includes an arm body 311 and a first protrusion 312 and a second protrusion 313 connected to both ends of the arm body 311, the first protrusion 312 and the second protrusion 313 are both perpendicular to the arm body 311, the pressing claw 5 is detachably connected to the arm body 311, the first protrusion 312 is rotatably connected to the U-shaped seat 32 through the first axis 35, and the second protrusion 313 is rotatably connected to the ear plate 34 through the third axis 37.

[0043] In this embodiment, combined with the attached Figure 4 As shown in this figure, the telescopic end of the telescopic cylinder 2 pulls back the connecting rod mechanism 3, so that the connecting rod mechanism 3 moves away from the fixed support seat 4 (see Figure 2). Figure 1 or attached Figure 2 The pressure arm 31 includes an arm body 311 and a first protrusion 312 and a second protrusion 313 connected to both ends of the arm body 311, wherein both ends of the arm body 311 are bent downward to form the first protrusion 312 and the second protrusion 313, the pressure claw 5 can be detachably connected to the upper surface of the arm body 311 by bolts, the first protrusion 312 can be rotatably connected to the U-shaped seat 32 by the first shaft 35, and the ear plate 34 can be provided with two, which are respectively provided on both sides of the second protrusion 313 (see Figure 3). Figure 1 or attached Figure 2 In the Y-axis direction), the second protrusion 313 can be rotatably connected to the two ear plates 34 through the third shaft 37, and the other ends of the two ear plates 34 can be rotatably connected to the convex seat 33 through the second shaft 36.

[0044] Optionally, the pneumatic quick clamping mechanism for small parts also includes a first L-shaped bracket 6 and a second L-shaped bracket 7, the first L-shaped bracket 6 includes a first horizontal plate 61 and a first vertical plate 62 connected to each other, the first horizontal plate 61 is detachably connected to the fixed mounting plate 1, the second L-shaped bracket 7 includes a second horizontal plate 71 and a second vertical plate 72 connected to each other, the second vertical plate 72 is detachably connected to the first vertical plate 62, and the fixed support seat 4 is detachably connected to the second horizontal plate 71.

[0045] In this embodiment, combined with the attached Figure 1 and attached Figure 2 As shown, the first L-shaped bracket 6 includes a first horizontal plate 61 and a first vertical plate 62 connected to each other, and the extension direction of the first horizontal plate 61 is the attachment direction. Figure 1 or attached Figure 2 In the Y-axis direction, the first horizontal plate 61 can be detachably connected to the fixed mounting plate 1 by bolts, and the second L-shaped bracket 7 includes a second horizontal plate 71 and a second vertical plate 72 connected to each other, wherein the extension direction of the second horizontal plate 71 is the attachment Figure 1 or attached Figure 2 In the X-axis direction, the second vertical plate 72 and the first vertical plate 62 can be connected by bolts, and the fixed support seat 4 is detachably connected to the upper surface of the second horizontal plate 71 by bolts.

[0046] Optionally, the pneumatic quick clamping mechanism for small parts further comprises a first limit plate 8 , wherein the first limit plate 8 is detachably connected to the second L-shaped bracket 7 , and the first limit plate 8 is used to abut against the clamped small part 100 .

[0047] In this embodiment, combined with the attached Figure 2 or attached Figure 3As shown, the first limiting plate 8 can be an inverted L-shaped structure, one end of the first limiting plate 8 can be detachably connected to the second L-shaped bracket 7 by bolts, and the other end of the first limiting plate 8 can abut against the clamped small part 100, thereby limiting the clamped small part 100 installed on the fixed support seat 4.

[0048] Optionally, the pneumatic quick clamping mechanism for small parts also includes a second limit plate 9, which is detachably connected to the convex seat 33 and / or the fixed mounting plate 1, and the second limit plate 9 is used to abut against the clamped small part 100, and the second limit plate 9 is arranged opposite to the first limit plate 8.

[0049] In this embodiment, combined with the attached Figure 3 As shown, one end of the second limiting plate 9 can be detachably connected to the convex seat 33 and / or the fixed mounting plate 1 by means of bolts (see Figures 1 to 3 The second limiting plate 9 is installed on the convex seat 33 , and is used to abut against the clamped small parts 100 . The second limiting plate 9 is arranged opposite to the first limiting plate 8 , and is used to jointly limit the clamped small parts 100 installed on the fixed support seat 4 .

[0050] Optionally, the pneumatic quick clamping mechanism for small parts further comprises a proximity switch 10 , which is disposed on the second L-shaped bracket 7 , and is used to detect whether the clamped small part 100 is on the fixed support seat 4 .

[0051] In this embodiment, combined with the attached Figure 1 or attached Figure 3 As shown, the proximity switch 10 is installed on the second L-shaped bracket 7, and is used to detect whether a clamped small part 100 is installed on the current fixed support seat 4. For example, if the proximity switch 10 detects that a clamped small part 100 is installed on the current fixed support seat 4, the proximity switch 10 lights up green, otherwise it lights up red, which is convenient for the staff to judge whether a clamped small part 100 is installed on the current fixed support seat 4.

[0052] Optionally, a through hole 11 is opened on the fixed installation plate 1 , the telescopic cylinder 2 is connected to the lower surface of the fixed installation plate 1 , and the telescopic end of the telescopic cylinder 2 is used to pass through the through hole 11 .

[0053] In this embodiment, combined with the attached Figure 1 As shown, a through hole 11 is opened on the fixed mounting plate 1, and the telescopic cylinder 2 is arranged in the vertical direction (attached Figure 1 The telescopic cylinder 2 is installed on the lower surface of the fixed mounting plate 1 (in the middle Z-axis direction), and the telescopic cylinder 2 is coaxially arranged with the through hole 11, and the telescopic end of the telescopic cylinder 2 can pass through the through hole 11.

[0054] Optionally, the telescopic cylinder 2 is a thin cylinder.

[0055] In this embodiment, the thin cylinder is a pneumatic actuator for realizing linear motion, which is usually composed of a cylinder barrel and a piston. Compared with the traditional cylinder, the thin cylinder has a thinner appearance and is suitable for applications with limited space or requiring lightweight design.

[0056] In addition, the utility model also provides a production line for an automobile main engine factory, comprising the pneumatic quick clamping mechanism for small parts as described above.

[0057] Since the technical improvements and technical effects of the automobile main engine factory production line are the same as those of the pneumatic quick clamping mechanism for small parts, the technical effects of the automobile main engine factory production line will not be described in detail.

[0058] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0059] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A pneumatic quick clamping mechanism for small parts, characterized in that: The invention comprises: a fixed mounting plate (1), a telescopic cylinder (2), a connecting rod mechanism (3), a fixed support seat (4) and a pressure claw (5); the fixed end of the telescopic cylinder (2) is connected to the fixed mounting plate (1); one end of the pressure claw (5) is connected to the telescopic end of the telescopic cylinder (2) through the connecting rod mechanism (3); the fixed support seat (4) is connected to the fixed mounting plate (1); and the fixed support seat (4) is used for mounting a clamped small part (100); When the telescopic end of the telescopic cylinder (2) pushes the connecting rod mechanism (3), the connecting rod mechanism (3) is used to drive the other end of the pressing claw (5) to move toward the fixed support seat (4) so ​​as to press the pressing claw (5) onto the clamped small part (100); When the telescopic end of the telescopic cylinder (2) pulls back the connecting rod mechanism (3), the connecting rod mechanism (3) is used to drive the other end of the pressing claw (5) to move away from the fixed support seat (4) to separate the pressing claw (5) from the clamped small part (100).

2. The pneumatic quick clamping mechanism for small parts according to claim 1, characterized in that: The connecting rod mechanism (3) comprises a pressure arm (31), a U-shaped seat (32), a convex seat (33) and an ear plate (34); the U-shaped seat (32) is connected to the telescopic end of the telescopic cylinder (2); the convex seat (33) is fixedly connected to the fixed mounting plate (1); one end of the pressure arm (31) is rotatably connected to the U-shaped seat (32); one end of the ear plate (34) is rotatably connected to the convex seat (33); the other end of the ear plate (34) is rotatably connected to the other end of the pressure arm (31); and the pressure claw (5) is detachably connected to the pressure arm (31).

3. The pneumatic quick clamping mechanism for small parts according to claim 2, characterized in that: The pressing arm (31) comprises an arm body (311) and a first protrusion (312) and a second protrusion (313) connected to both ends of the arm body (311); the first protrusion (312) and the second protrusion (313) are both perpendicular to the arm body (311); the pressing claw (5) is detachably connected to the arm body (311); the first protrusion (312) is rotatably connected to the U-shaped seat (32); and the second protrusion (313) is rotatably connected to the ear plate (34).

4. The pneumatic quick clamping mechanism for small parts according to claim 2, characterized in that: It also includes a first L-shaped bracket (6) and a second L-shaped bracket (7), wherein the first L-shaped bracket (6) includes a first horizontal plate (61) and a first vertical plate (62) connected to each other, wherein the first horizontal plate (61) is detachably connected to the fixed mounting plate (1), and the second L-shaped bracket (7) includes a second horizontal plate (71) and a second vertical plate (72) connected to each other, wherein the second vertical plate (72) is detachably connected to the first vertical plate (62), and the fixed support seat (4) is detachably connected to the second horizontal plate (71).

5. The pneumatic quick clamping mechanism for small parts according to claim 4, characterized in that: It also comprises a first limiting plate (8), wherein the first limiting plate (8) is detachably connected to the second L-shaped bracket (7), and the first limiting plate (8) is used to abut against the clamped small part (100).

6. The pneumatic quick clamping mechanism for small parts according to claim 5, characterized in that: The invention also comprises a second limiting plate (9), wherein the second limiting plate (9) is detachably connected to the convex seat (33) and / or the fixed mounting plate (1), and the second limiting plate (9) is used to abut against the clamped small part (100), and the second limiting plate (9) is arranged opposite to the first limiting plate (8).

7. The pneumatic quick clamping mechanism for small parts according to claim 4, characterized in that: It also comprises a proximity switch (10), wherein the proximity switch (10) is arranged on the second L-shaped bracket (7), and the proximity switch (10) is used to detect whether the clamped small part (100) is on the fixed support seat (4).

8. The pneumatic quick clamping mechanism for small parts according to claim 1, characterized in that: The fixed installation plate (1) is provided with a through hole (11), the telescopic cylinder (2) is connected to the lower surface of the fixed installation plate (1), and the telescopic end of the telescopic cylinder (2) is used to pass through the through hole (11).

9. The pneumatic quick clamping mechanism for small parts according to claim 1, characterized in that: The telescopic cylinder (2) is a thin cylinder.

10. A production line of an automobile main engine factory, characterized in that: The invention comprises a pneumatic quick clamping mechanism for small parts as claimed in any one of claims 1 to 9.

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