Air pressure type automatic clamping jig

Abstract

The utility model relates to the technical field of clamping jigs, in particular to an air pressure type automatic clamping jig which comprises a mounting plate, limiting rods are connected to the two sides of the top of the mounting plate in a sliding mode, a telescopic mechanism is further arranged on the top of the mounting plate, and an adjusting mechanism is arranged at the bottom of the telescopic mechanism. Through the arrangement of an I-shaped limiting plate and a limiting groove, a rotating rod is rotated to drive a lead screw to rotate, and the I-shaped limiting plate can be driven to move downwards or ascend, so that the I-shaped limiting plate is driven to slide in the limiting groove, and a clamping block can be driven to rotate on a second round rod; and therefore, the opening and closing degree of the clamping blocks on the two sides of the lower portion of the fixing plate is changed, then circular pipes of different sizes can be clamped, and the practicability of the device is improved.

Description

A pneumatic automatic clamping fixture Technical Field

[0001] This utility model relates to the field of clamping fixture technology, specifically a pneumatic automatic clamping fixture. Background Technology

[0002] Pneumatic automatic clamping fixtures are tooling devices that use pneumatic power to automatically position and clamp workpieces. They convert the kinetic energy of compressed air into mechanical clamping force through a pneumatic cylinder, allowing for precise control of the clamping force and its duration. The fixture body typically includes grippers, a positioning base, and other structures. Widely used in machining, electronics manufacturing, and other fields, they feature fast response, stable clamping force, and ease of automation, effectively improving production efficiency and machining accuracy.

[0003] Most pneumatic automatic clamping fixtures on the market currently use rigid jaw structures, which have a fixed clamping range and can only be used for round tubes of a single specification or similar size. They cannot clamp and process round tubes of different diameters, resulting in low practicality of the device. To address this, we propose a pneumatic automatic clamping fixture. Summary of the Invention

[0004] The purpose of this invention is to provide a pneumatic automatic clamping fixture to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A pneumatic automatic clamping fixture includes a mounting plate, with limit rods slidably connected to both sides of the top of the mounting plate, a telescopic mechanism on the top of the mounting plate, and an adjustment mechanism at the bottom of the telescopic mechanism.

[0007] The telescopic mechanism includes a cylinder fixedly connected to the top of the mounting plate. The telescopic end of the cylinder passes through the wall panel of the mounting plate and is fixedly connected to a first connecting plate. A first connecting rod and a second connecting rod are provided at each of the four corners of the first connecting plate.

[0008] The adjustment mechanism includes four fixed plates fixedly connected to the bottom of four second connecting rods. Each of the four corners of the bottom of the fixed plates is fixedly connected to a second connecting plate. A second round rod is rotatably connected to two adjacent second connecting plates. A clamping block is rotatably connected to the surface of each of the two second round rods. A limit groove is formed on the adjacent side of each of the two clamping blocks. An I-shaped limit plate is slidably connected in the two limit grooves. A lead screw is rotatably connected to the top surface of the I-shaped limit plate.

[0009] Preferably, the bottom ends of both limiting rods are fixedly connected to the top surface of the first connecting plate, and the two ends of the first connecting rod are respectively provided with a first rotating shaft and a second rotating shaft. The first connecting rod is rotatably connected to the first connecting plate through the first rotating shaft, and the first connecting rod is rotatably connected to the second connecting rod through the second rotating shaft.

[0010] Preferably, a first round rod is fixedly connected to both sides of the bottom of the mounting plate, and the top end of the second connecting rod is rotatably connected to the circumferential surface of the first round rod.

[0011] Preferably, the threaded surface of the lead screw is threadedly connected to the wall plate of the fixed plate, and a rotating rod is fixedly connected to the top end of the lead screw.

[0012] Preferably, the clamping surface of the clamping block is provided with a snap-fit ​​groove, and a rubber pad is movably snapped into the snap-fit ​​groove.

[0013] Preferably, the cylinder is located at the center of the top surface of the mounting plate, and the two limiting rods are symmetrically designed about the cylinder.

[0014] The beneficial effects of this utility model are:

[0015] This invention utilizes an I-shaped limiting plate and a limiting groove. By rotating a rotating rod, the rotating rod drives a lead screw to rotate. The lead screw's rotation causes the I-shaped limiting plate to move down or up, thus causing the I-shaped limiting plate to slide within the limiting groove. This, in turn, causes the clamping blocks to rotate on the second round rod, thereby changing the opening and closing degree of the clamping blocks on both sides below the fixed plate. This allows for the clamping of round tubes of different sizes, improving the practicality of the device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 is a structural schematic diagram of the telescopic mechanism of this utility model;

[0019] Figure 3 is a schematic diagram of the adjustment mechanism of this utility model;

[0020] Figure 4 is a partial structural schematic diagram of the adjustment mechanism of this utility model.

[0021] The reference numerals in the figure are as follows: 1. Mounting plate; 2. Limiting rod; 3. Telescopic mechanism; 31. Cylinder; 32. First connecting plate; 33. First round rod; 34. First connecting rod; 35. Second connecting rod; 4. Adjusting mechanism; 41. Fixing plate; 42. Second connecting plate; 43. Second round rod; 44. Clamping block; 45. Rubber pad; 46. Limiting groove; 47. I-shaped limiting plate; 48. Lead screw; 49. Rotating rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] As shown in Figures 1-4, a pneumatic automatic clamping fixture includes a mounting plate 1. Limiting rods 2 are slidably connected to both sides of the top of the mounting plate 1. A telescopic mechanism 3 is also provided on the top of the mounting plate 1, and an adjusting mechanism 4 is provided at the bottom of the telescopic mechanism 3. The telescopic mechanism 3 includes a cylinder 31 fixedly connected to the top of the mounting plate 1. The telescopic end of the cylinder 31 passes through the wall panel of the mounting plate 1 and is fixedly connected to a first connecting plate 32. A first connecting rod 34 and a second connecting rod 35 are provided at each of the four corners of the first connecting plate 32. The bottom of the two limiting rods 2... Both ends are fixedly connected to the top surface of the first connecting plate 32. The two ends of the first connecting rod 34 are respectively provided with a first rotating shaft and a second rotating shaft. The first connecting rod 34 is rotatably connected to the first connecting plate 32 through the first rotating shaft. The first connecting rod 34 is rotatably connected to the second connecting rod 35 through the second rotating shaft. The bottom sides of the mounting plate 1 are fixedly connected to the first round rod 33. The top end of the second connecting rod 35 is rotatably connected to the circumferential surface of the first round rod 33. The cylinder 31 is located at the center of the top surface of the mounting plate 1. The two limit rods 2 are symmetrically designed about the cylinder 31.

[0024] In practice, by starting the cylinder 31, the first connecting plate 32 is raised through the telescopic end of the cylinder 31. The rotation of the first connecting plate 32 causes the first connecting rod 34 and the second connecting rod 35 on the two first round rods 33 to move closer to each other, thereby causing the two clamping blocks 44 below the second connecting rod 35 to move closer to each other, thus completing the clamping of the round tube.

[0025] As a technical optimization of this utility model, the adjustment mechanism 4 includes four fixed plates 41 respectively fixedly connected to the bottom of four second connecting rods 35. A second connecting plate 42 is fixedly connected to the four corners of the bottom of the fixed plate 41. A second round rod 43 is rotatably connected to two adjacent second connecting plates 42. A clamping block 44 is rotatably connected to the surface of the two second round rods 43. A limit groove 46 is opened on the adjacent side of the two clamping blocks 44. An I-shaped limit plate 47 is slidably connected in the two limit grooves 46. A lead screw 48 is rotatably connected to the top surface of the I-shaped limit plate 47. The threaded surface of the lead screw 48 is threadedly connected to the wall plate of the fixed plate 41. A rotating rod 49 is fixedly connected to the top of the lead screw 48. A snap-fit ​​groove is opened on the clamping surface of the clamping block 44. A rubber pad 45 is movably snapped in the snap-fit ​​groove.

[0026] In practice, by rotating the rotating rod 49, the rotating rod 49 drives the lead screw 48 to rotate. By rotating the lead screw 48 to move down or up, the I-shaped limiting plate 47 can be moved down or up, thereby causing the I-shaped limiting plate 47 to slide in the limiting groove 46. This can cause the clamping block 44 to rotate on the second round rod 43, thereby changing the opening and closing degree of the clamping blocks 44 on both sides below the fixed plate 41, thus satisfying the clamping of round tubes of different sizes.

[0027] The stability of the round tube clamp can be enhanced by using the rubber pad 45. When the rubber pad 45 is damaged, it can be replaced by pulling out the rubber pad 45, which makes it convenient to use.

[0028] In use, this utility model adjusts the clamping block 44 according to the size of the round tube. By rotating the rotating rod 49, the rotating rod 49 drives the lead screw 48 to rotate. The lead screw 48 moves down or up, thereby causing the I-shaped limiting plate 47 to slide in the limiting groove 46, and causing the clamping block 44 to rotate on the second round rod 43. The opening and closing degree of the clamping blocks 44 on both sides below the fixing plate 41 is adjusted to a suitable size for use. By starting the cylinder 31, the telescopic end of the cylinder 31 drives the first connecting plate 32 and the limiting rod 2 to rise. The rotation of the first connecting plate 32 causes the first connecting rod 34 and the second connecting rod 35 on the two first round rods 33 to move closer to each other, thereby causing the two clamping blocks 44 below the second connecting rod 35 to move closer to each other, thus completing the clamping of the round tube.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A pneumatic automatic clamping fixture, comprising a mounting plate (1), characterized in that, The top two sides of the mounting plate (1) are slidably connected to limit rods (2). The top of the mounting plate (1) is also provided with a telescopic mechanism (3), and the bottom of the telescopic mechanism (3) is provided with an adjustment mechanism (4). The telescopic mechanism (3) includes a cylinder (31) fixedly connected to the top of the mounting plate (1). The telescopic end of the cylinder (31) passes through the wall panel of the mounting plate (1) and is fixedly connected to a first connecting plate (32). The four corners of the first connecting plate (32) are provided with a first connecting rod (34) and a second connecting rod (35). The adjustment mechanism (4) includes a first connecting rod (34) and a second connecting rod (35) respectively fixedly connected to the four corners. The bottom of the second connecting rod (35) has four fixed plates (41). At the four corners of the bottom of the fixed plates (41), the second connecting plates (42) are fixedly connected. The two second connecting plates (42) that are close to each other are rotatably connected to the second round rods (43). The surfaces of the two second round rods (43) are rotatably connected to the clamping blocks (44). The two clamping blocks (44) have a limit groove (46) on their close sides. The two limit grooves (46) are slidably connected to the I-shaped limit plates (47). The top surface of the I-shaped limit plates (47) is rotatably connected to the lead screw (48).

2. The pneumatic automatic clamping fixture according to claim 1, characterized in that, The bottom ends of the two limiting rods (2) are fixedly connected to the top surface of the first connecting plate (32). The two ends of the first connecting rod (34) are respectively provided with a first rotating shaft and a second rotating shaft. The first connecting rod (34) is rotatably connected to the first connecting plate (32) through the first rotating shaft, and the first connecting rod (34) is rotatably connected to the second connecting rod (35) through the second rotating shaft.

3. The pneumatic automatic clamping fixture according to claim 2, characterized in that, The bottom sides of the mounting plate (1) are fixedly connected to the first round rod (33), and the top end of the second connecting rod (35) is rotatably connected to the circumferential surface of the first round rod (33).

4. The pneumatic automatic clamping fixture according to claim 1, characterized in that, The threaded surface of the lead screw (48) is threadedly connected to the wall plate of the fixed plate (41), and a rotating rod (49) is fixedly connected to the top end of the lead screw (48).

5. A pneumatic automatic clamping fixture according to claim 4, characterized in that, The clamping block (44) has a snap-fit ​​groove on its clamping surface, and a rubber pad (45) is movably snapped into the snap-fit ​​groove.

6. A pneumatic automatic clamping fixture according to claim 1, characterized in that, The cylinder (31) is located at the center of the top surface of the mounting plate (1), and the two limiting rods (2) are symmetrically designed about the cylinder (31).

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