Pneumatic cutting pliers

Abstract

The utility model belongs to the technical field of mechanical assembly auxiliary tools, and particularly relates to a pair of pneumatic cutting pliers which comprises two pliers arms with the middles hinged and connected, a screw assembly is arranged at the hinged position of the two pliers arms and comprises a threaded rod, a pressing block is installed on the threaded rod in a sliding mode, the two sides of the pressing block are connected with lifting connecting plates respectively, and the lifting connecting plates are connected with the lifting connecting plates. A tool bit is arranged at one end of the clamp arm, a connecting rod is hinged to the other end of the clamp arm, the end of the connecting rod is hinged to the pressing block, the threaded rod is in threaded connection with a threaded sleeve, the threaded sleeve is used for being connected with a pneumatic mechanism, and the lifting connecting plate is movably connected with the threaded sleeve. According to the bolt cutting device, the potential safety hazards such as spark splashing and cutting blade flying-out in the bolt cutting operation process can be effectively avoided, and the safety risk caused by bolt cutting operation is eliminated.

Description

Technical Field

[0001] The utility model relates to a pneumatic cutting pliers, belonging to the technical field of mechanical assembly auxiliary tooling. Background Art

[0002] With the development of wheeled corn harvesters, more and more new product structures are emerging, and with them comes the need to develop new assembly processes. A type of corn harvester that harvests both stalks and ears requires the use of bolts at the joints of the conveyor belt structure. The excess bolts exposed outside the nuts need to be cut off after assembly. Currently, there is no dedicated tooling for cutting bolts, and workshops typically use grinders to cut bolts. However, this process generates a large amount of sparks, which seriously affect the assembly rhythm of surrounding processes. It is inconvenient to operate and poses a significant safety hazard. Existing manual shearing pliers are not well suited to bolt cutting, and are labor-intensive and extremely inefficient. Utility Model Content

[0003] The utility model aims to solve the defects of the prior art and provides a pneumatic shearing pliers.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A pneumatic shearing pliers comprises two pliers arms hingedly connected in the middle, a screw assembly is provided at the hinge of the two pliers arms, the screw assembly comprises a threaded rod, a pressure block is slidably mounted on the threaded rod, both sides of the pressure block are respectively connected to a lifting connecting plate, one end of the pliers arm is provided with a cutting head, the other end of the pliers arm is hingedly connected to a connecting rod, the end of the connecting rod is hinged on the pressure block, the threaded rod is threadedly connected to a threaded sleeve, the threaded sleeve is used to connect to a pneumatic mechanism, and the lifting connecting plate is movably connected to the threaded sleeve.

[0006] The beneficial effects of the present invention are as follows: the present invention adopts a pneumatic mechanism to provide power for the threaded sleeve, realizes the lifting and lowering of the threaded sleeve by the rotation of the threaded rod and the threaded sleeve, and drives the lifting and lowering of the connecting rod end by lifting the connecting plate or the pressure block, thereby driving the clamp arm to rotate around the hinge point to realize the opening and closing of the cutter head, and converting the spiral pressing force into shearing force to realize the shearing of the bolt. The larger the connecting rod angle, the greater the shearing force acting on the clamp arm. The operation is simple and reliable, can effectively reduce the labor intensity of workers, improve production efficiency, can effectively solve the safety hazards such as sparks flying and cutting discs flying out during the bolt cutting operation, and eliminates the safety risks brought by the bolt cutting operation.

[0007] On the basis of the above technical solution, the present invention can also make the following improvements:

[0008] Furthermore, mounting columns are respectively provided on both sides of the pressing block, and the ends of the connecting rod are hingedly mounted on the mounting columns.

[0009] The beneficial effect of adopting the above-mentioned further technical solution is: under the drive of the pneumatic mechanism, the threaded sleeve rotates to the right, and the threaded sleeve descends, driving the pressure block movably installed on the threaded rod to descend, thereby driving the end of the connecting rod hingedly installed on the mounting column of the pressure block to descend, realizing the rotation of the clamp arm, thereby closing the cutter head and performing the bolt cutting operation.

[0010] Furthermore, the end of the mounting post is threadedly connected with a mounting nut.

[0011] The beneficial effect of adopting the above further technical solution is that the mounting nut limits and fixes the component mounted on the mounting column.

[0012] Furthermore, the connecting rods are respectively provided on both sides of the end of the clamp arm, and the connecting rods on the same side are hingedly mounted on the same mounting column.

[0013] The beneficial effect of adopting the above-mentioned further technical solution is that connecting rods are respectively provided on both sides of the end of the pliers arm, so that the connecting rod and the pliers arm can be subjected to more uniform force during rotation, and the operation is smoother.

[0014] Furthermore, the lifting connecting plate is L-shaped.

[0015] Furthermore, one end of the lifting connecting plate is fixedly mounted on the mounting column, and the other end of the lifting connecting plate is movably connected to the threaded sleeve.

[0016] The beneficial effect of adopting the above-mentioned further technical solution is that the L-shaped lifting connecting plate facilitates the installation of the lifting connecting plate on the pressure block installation column and the movable installation on the threaded sleeve.

[0017] Furthermore, an annular limiting groove is provided on the outer side of the threaded sleeve, and an arc-shaped matching groove is correspondingly provided on the lifting connecting plate.

[0018] The beneficial effect of adopting the above-mentioned further technical solution is: by matching the matching groove of the lifting connecting plate with the limiting groove of the threaded sleeve, the lifting connecting plate is driven to rise by the threaded sleeve, thereby driving the pressure block and the end of the connecting rod to rise, thereby realizing the opening of the clamp arm, and the rotation of the threaded sleeve will not drive the lifting connecting plate to rotate, thereby not affecting the rise of the lifting connecting plate.

[0019] Furthermore, a fitting is provided at the end of the threaded sleeve, the pneumatic mechanism is an air trigger, and the fitting is used to be connected with the air trigger.

[0020] The beneficial effect of adopting the above further technical solution is that the connection with the air trigger is achieved through the matching piece, and the connection can be achieved by directly engaging the matching piece at the output end of the air trigger, and the connection is very convenient.

[0021] Furthermore, the middle parts of the two clamp arms are connected by a hinge bolt, and the screw assembly includes an inverted U-shaped mounting plate, both ends of the mounting plate are respectively mounted on the hinge bolt, and the threaded rod is fixedly mounted on the top of the mounting plate.

[0022] Furthermore, a handle is provided at the end of the hinge bolt.

[0023] The beneficial effect of adopting the above-mentioned further technical solution is that it is convenient for workers to hold the pneumatic cutting pliers of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0025] Figure 2 for Figure 1 A magnified view of the structure at point A;

[0026] Figure 3 This is the main view of the utility model;

[0027] Figure 4 It is a cross-sectional view of the utility model;

[0028] Figure 5 It is a partial cross-sectional view of the threaded sleeve;

[0029] Figure 6 This is the main view of the lifting connecting plate;

[0030] Figure 7 A top view of the lifting connecting plate;

[0031] Figure 8 This is a reference diagram for the use process of the present utility model.

[0032] The accompanying drawings are marked as follows: 1. Clamp arm; 2. Articulated bolt; 3. Mounting plate; 4. Threaded rod; 5. Pressure block; 6. Cutter head; 7. Lifting connecting plate; 8. Connecting rod; 9. Mounting column; 10. Mounting nut; 11. Threaded sleeve; 12. Matching part; 13. Handle; 14. Limiting groove; 15. Matching groove; 16. Limiting shoulder. DETAILED DESCRIPTION

[0033] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0034] See also Figure 1-Figure 7, a pneumatic shearing pliers, comprising two pliers arms 1 hingedly connected in the middle. Specifically, the middle parts of the two pliers arms 1 in this embodiment are connected by a hinge bolt 2, and a screw assembly is provided at the hinge of the two pliers arms 1, and the screw assembly includes a mounting plate 3 and a threaded rod 4 installed on the mounting plate 3, a pressure block 5 is slidably installed on the threaded rod 4, and both sides of the pressure block 5 are respectively connected to a lifting connecting plate 7. One end of the pliers arm 1 is provided with a cutter head 6, and the other end of the pliers arm 1 is hingedly connected to a connecting rod 8, and the end of the connecting rod 8 is hinged on the pressure block 5. Specifically, in this embodiment, both sides of the pressure block 5 are provided with mounting columns 9, and the end of the connecting rod 8 is hingedly installed on the mounting column 9. The end of the mounting column 9 is threadedly connected with a mounting nut 10, and the connecting rod 8 is provided on both sides of the end of the pliers arm 1, and the connecting rod 8 on the same side is hingedly installed on the same mounting column 9. The threaded rod 4 is threadedly connected to a threaded sleeve 11 , and the threaded sleeve 11 is used to connect to a pneumatic mechanism (not shown). The lifting connecting plate 7 is movably connected to the threaded sleeve 11 .

[0035] Specifically, in this embodiment, the lifting connecting plate 7 is L-shaped. One end of the lifting connecting plate 7 is fixedly mounted on the mounting post 9, and the other end of the lifting connecting plate 7 is movably connected to the threaded sleeve 11. An annular limiting groove 14 is provided on the outer side of the threaded sleeve 11. The lifting connecting plate 7 is provided with a corresponding arc-shaped matching groove 15. The threaded sleeve 11 is provided with a limiting shoulder 16 corresponding to the matching groove 15. The limiting shoulder 16 is located below the limiting groove 14.

[0036] A fitting 12 is provided at the end of the threaded sleeve 11. The pneumatic mechanism is an air trigger (not shown). The fitting 12 is used to connect with the air trigger. Specifically, in this embodiment, the fitting 12 can be a nut-like structure to facilitate connection with the air trigger.

[0037] The mounting plate 3 is in an inverted U shape, and both ends of the mounting plate 3 are respectively mounted on the hinge bolts 2 , and the threaded rod 4 is fixedly mounted on the top of the mounting plate 3 .

[0038] A handle 13 is provided at the end of the hinge bolt 2 .

[0039] like Figure 8 As shown, the use process of the pneumatic shearing pliers structure provided by the utility model adopts an air trigger to provide power:

[0040] 1. The air trigger rotates counterclockwise, which drives the threaded sleeve 11 to rotate and realizes the upward movement of the threaded sleeve 11 through cooperation with the screw assembly. The threaded sleeve 11 drives the lifting connecting plate 7 to move upward, and the lifting connecting plate 7 drives the end of the connecting rod 8 to move upward, thereby driving the two clamp arms 1 to rotate around the hinge point to open the cutter head 6 and align the cutter head 6 with the root of the bolt;

[0041] Second, the air trigger rotates clockwise, driving the threaded sleeve 11 to rotate, and through cooperation with the screw assembly, the threaded sleeve 11 moves downward, and the threaded sleeve 11 applies downward pressure to the pressure block 5. Since the pressure block 5 is movably mounted on the threaded rod 4, the pressure block 5 moves downward under the pressure of the threaded sleeve 11, thereby driving the connecting rod 8 to move downward, thereby driving the two clamp arms 1 to rotate in opposite directions around the intersection point, and the cutter head 6 gradually closes together to achieve the purpose of shearing the bolt;

[0042] 3. After the bolt is cut, the air trigger rotates counterclockwise. Similar to step 1, the air trigger drives the threaded sleeve 11 to rotate, drives the lifting connecting plate 7 to move upward, thereby driving the end of the connecting rod 8 to move upward, and the connecting rod 8 drives the two clamp arms 1 to rotate around the hinge point to open the cutter head 6, completing the bolt cutting operation.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A pneumatic shearing pliers, characterized in that: The utility model comprises two clamp arms (1) hingedly connected at the middle part, a screw assembly is provided at the hinge part of the two clamp arms (1), the screw assembly comprises a threaded rod (4), a pressure block (5) is slidably mounted on the threaded rod (4), both sides of the pressure block (5) are respectively connected to a lifting connecting plate (7), one end of the clamp arm (1) is provided with a cutter head (6), the other end of the clamp arm (1) is hingedly connected to a connecting rod (8), the end of the connecting rod (8) is hinged on the pressure block (5), the threaded rod (4) is threadedly connected to a threaded sleeve (11), the threaded sleeve (11) is used to be connected to a pneumatic mechanism, and the lifting connecting plate (7) is movably connected to the threaded sleeve (11).

2. The pneumatic shearing pliers according to claim 1, characterized in that: Mounting columns (9) are respectively provided on both sides of the pressing block (5), and the ends of the connecting rod (8) are hingedly mounted on the mounting columns (9).

3. The pneumatic shearing pliers according to claim 2, characterized in that: The end of the mounting column (9) is threadedly connected with a mounting nut (10).

4. The pneumatic shearing pliers according to claim 3, characterized in that: The connecting rods (8) are respectively provided on both sides of the end of the clamp arm (1), and the connecting rods (8) on the same side are hingedly mounted on the same mounting column (9).

5. The pneumatic shearing pliers according to claim 4, characterized in that: The lifting connecting plate (7) is L-shaped.

6. The pneumatic shearing pliers according to claim 5, characterized in that: One end of the lifting connection plate (7) is fixedly mounted on the mounting column (9), and the other end of the lifting connection plate (7) is movably connected to the threaded sleeve (11).

7. The pneumatic shearing pliers according to claim 6, characterized in that: An annular limiting groove (14) is provided on the outer side of the threaded sleeve (11), and an arc-shaped matching groove (15) is correspondingly provided on the lifting connecting plate (7).

8. The pneumatic shearing pliers according to claim 7, characterized in that: The end of the threaded sleeve (11) is provided with a matching piece (12); the pneumatic mechanism is an air trigger; and the matching piece (12) is used for matching and connecting with the air trigger.

9. The pneumatic shearing pliers according to claim 8, characterized in that: The middle parts of the two clamp arms (1) are connected by a hinge bolt (2), and the screw assembly includes an inverted U-shaped mounting plate (3), both ends of the mounting plate (3) are respectively mounted on the hinge bolt (2), and the threaded rod (4) is fixedly mounted on the top of the mounting plate (3).

10. The pneumatic shearing pliers according to claim 9, characterized in that: The end of the hinge bolt (2) is provided with a handle (13).

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