Manual hydraulic precision flat tongs

Abstract

The utility model discloses a pair of manual hydraulic precise flat tongs, which relates to the technical field of machine tool workpiece processing and comprises a bottom plate, supporting legs are fixedly connected to the bottom surface of the bottom plate, a U-shaped frame is fixedly connected to the upper surface of the bottom plate, a square plate is fixedly connected to the upper surface of the U-shaped frame, and a limiting mechanism is arranged on the upper surface of the square plate. A pressure value is transmitted to the motor through the pressure sensor, the motor is started, and then the motor drives the limiting piece to move upwards, so that the oil pump handle can be limited, the problem that a workpiece is damaged by the movable clamp body due to the fact that a worker repeatedly presses the oil pump handle too fast is solved, and the machining quality and precision of the workpiece are guaranteed; and through the arranged spring and the limiting piece, when the oil pump handle is limited, the oil pump handle can be buffered, so that some vibration is reduced, some protection can be conducted on the oil pump handle, and therefore the protection performance of the device is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool workpiece processing, in particular to a manual hydraulic precision flat-nose pliers. Background Art

[0002] Flat-nose pliers, also known as machine vises, are a general-purpose clamp that is often used to install small workpieces. They are random accessories for milling machines and drilling machines. They are fixed on the machine tool workbench to clamp the workpiece for cutting. In the field of machine tool accessories, most of the existing flat-nose pliers for manually clamping workpieces are composed of a pliers body, a sliding pliers body, a pliers clamping screw and a pliers seat.

[0003] According to the patent application number 202121614030.3, a manual hydraulic precision flat-nose pliers is disclosed, including a base, a fixed pliers body, a movable pliers body, a cylinder, a hydraulic rod, a two-way manual oil pump, a reversing valve, an oil pump handle, an oil pipe, a pressure gauge, a pressure adjustment knob, and an oil cylinder locking screw. The fixed pliers body is fixed to the base by screws, the movable pliers body is installed in the groove of the base and can move parallel to the surface of the base, the oil cylinder is fixed to the base by the oil cylinder locking screw, the oil cylinder is connected to the movable pliers body by the hydraulic rod, and the two-way manual oil pump is connected to the oil cylinder by the two oil pipes and transmits hydraulic pressure.

[0004] The above scheme has the advantages of being able to adjust the movement of the movable jaws in both directions by hydraulic means, to achieve clamping and loosening of the workpiece, and being able to adjust and display the clamping force. The above scheme controls the movement of the movable jaw body by repeatedly pressing the oil pump handle, so as to facilitate clamping of the workpiece. However, the method of repeatedly pressing the handle is prone to the movable jaw body accidentally crushing the workpiece due to the staff pressing at a fast speed during clamping, which is not conducive to the processing of the workpiece and has certain shortcomings. For this reason, we provide a manual hydraulic precision flat-nose pliers to solve the above problems. Utility Model Content

[0005] The utility model aims to make up for the deficiencies of the prior art and provides a manual hydraulic precision flat-nose pliers.

[0006] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a manual hydraulic precision flat-nose pliers, comprising a base plate, the bottom surface of the base plate is fixedly connected to a supporting foot, the upper surface of the base plate is fixedly connected to a U-shaped frame, the upper surface of the U-shaped frame is fixedly connected to a square plate, the upper surface of the square plate is provided with a limiting mechanism, a two-way manual oil pump is installed on the upper surface of the square plate, an oil pump handle is provided on the outer surface of the two-way manual oil pump, a reversing valve is provided on the outer surface of the two-way manual oil pump, an oil delivery end of the two-way manual oil pump is fixedly connected to an oil pipe, an end of the oil pipe away from the two-way manual oil pump is fixedly connected to an oil cylinder, the oil cylinder is fixedly connected to the upper surface of the base plate, a hydraulic rod is installed on the output end of the oil cylinder, an end of the hydraulic rod away from the oil cylinder is fixedly connected to a moving pliers body, the moving pliers body is slidably connected to the outer surface of the base plate, a solid pliers body is fixedly connected to the upper surface of the base plate, and a pressure sensor is installed on a side of the solid pliers body close to the moving pliers body.

[0007] Furthermore, the limiting mechanism includes a first square tube, which is fixedly connected to the upper surface of the square plate, a motor is installed on the upper surface of the first square tube, a screw rod is installed at the output end of the motor, and the screw rod is rotatably connected to the inside of the first square tube.

[0008] Furthermore, the outer surface of the screw rod is threadedly connected to a first slider, the first slider is slidably connected to the inner wall of the first square tube, the outer surface of the first slider is fixedly connected to a U-shaped plate, and the outer surface of the U-shaped plate is fixedly connected to a second slider.

[0009] Furthermore, the second slider is slidably connected to a slide rod, both ends of the slide rod are fixedly connected to a second square tube, the bottom surface of the second square tube is fixedly connected to a square plate, and the second slider is slidably connected to an inner wall of the second square tube.

[0010] Furthermore, a spring is fixedly connected to the upper surface of the U-shaped plate, an end of the spring away from the U-shaped plate is fixedly connected to a connecting plate, and a limiting piece is fixedly connected to the upper surface of the connecting plate.

[0011] Furthermore, a T-shaped circular sliding rod is fixedly connected to the bottom surface of the connecting plate, a cylinder is slidably connected to the outer surface of the T-shaped circular sliding rod, and one end of the cylinder away from the T-shaped circular sliding rod is fixedly connected to the U-shaped plate.

[0012] Compared with the prior art, the manual hydraulic precision flat-nose pliers have the following beneficial effects:

[0013] 1. The utility model transmits the pressure value to the motor through the pressure sensor to start the motor, and then uses the motor to drive the limiter to move upward, so as to limit the oil pump handle, avoiding the problem that the staff repeatedly presses the oil pump handle too quickly, causing the movable clamp to damage the workpiece, thereby ensuring the processing quality and accuracy of the workpiece.

[0014] 2. The utility model provides a spring and a limiter, which can buffer the oil pump handle when limiting the oil pump handle, thereby reducing some vibrations, and can also provide some protection for the oil pump handle, thereby ensuring the protectiveness of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional front view structural schematic diagram of the utility model;

[0016] Figure 2 It is a three-dimensional top view structural diagram of the utility model;

[0017] Figure 3 It is a three-dimensional structural diagram of the limiting mechanism of the utility model;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the limiting mechanism of the utility model.

[0019] In the figure: 1. bottom plate; 2. supporting foot; 3. U-shaped frame; 4. square plate; 5. limiting mechanism; 501. first square tube; 502. motor; 503. screw rod; 504. first slider; 505. U-shaped plate; 506. second slider; 507. slide bar; 508. second square tube; 509. spring; 510. connecting plate; 511. limiting member; 512. T-shaped circular slide bar; 513. cylinder; 6. two-way manual oil pump; 7. oil pump handle; 8. reversing valve; 9. oil pipe; 10. oil cylinder; 11. hydraulic rod; 12. moving clamp body; 13. fixed clamp body; 14. pressure sensor. DETAILED DESCRIPTION

[0020] 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.

[0021] The present embodiment provides a manual hydraulic precision flat-nose pliers, which are used to clamp a workpiece for processing. The limit mechanism 5 is provided to limit the oil pump handle 7, thereby avoiding the problem that the worker repeatedly presses the oil pump handle 7 too quickly, causing the movable pliers 12 to damage the workpiece, thereby ensuring the processing quality and precision of the workpiece.

[0022] See also Figure 1 to Figure 4A manual hydraulic precision flat-nose pliers comprises a base plate 1, a supporting foot 2 is fixedly connected to the bottom surface of the base plate 1, a U-shaped frame 3 is fixedly connected to the upper surface of the base plate 1, a square plate 4 is fixedly connected to the upper surface of the U-shaped frame 3, a limiting mechanism 5 is arranged on the upper surface of the square plate 4, a two-way manual oil pump 6 is installed on the upper surface of the square plate 4, an oil pump handle 7 is arranged on the outer surface of the two-way manual oil pump 6, a reversing valve 8 is arranged on the outer surface of the two-way manual oil pump 6, an oil pipe 9 is fixedly connected to the oil delivery end of the two-way manual oil pump 6, an end of the oil pipe 9 away from the two-way manual oil pump 6 is fixedly connected to an oil cylinder 10, the oil cylinder 10 is fixedly connected to the upper surface of the base plate 1, a hydraulic rod 11 is installed at the output end of the oil cylinder 10, an end of the hydraulic rod 11 away from the oil cylinder 10 is fixedly connected to a movable pliers body 12, the movable pliers body 12 is slidably connected to the outer surface of the base plate 1, a fixed pliers body 13 is fixedly connected to the upper surface of the base plate 1, and a pressure sensor 14 is arranged on a side of the solid pliers body 13 close to the movable pliers body 12.

[0023] The limiting mechanism 5 includes a first square tube 501, which is fixedly connected to the upper surface of the square plate 4. A motor 502 is installed on the upper surface of the first square tube 501, and a screw rod 503 is installed at the output end of the motor 502. The screw rod 503 is rotatably connected to the inside of the first square tube 501.

[0024] The outer surface of the screw rod 503 is threadedly connected to the first slider 504, the first slider 504 is slidably connected to the inner wall of the first square tube 501, the outer surface of the first slider 504 is fixedly connected to the U-shaped plate 505, and the outer surface of the U-shaped plate 505 is fixedly connected to the second slider 506.

[0025] The second slider 506 is slidably connected to a slide rod 507 , and both ends of the slide rod 507 are fixedly connected to a second square tube 508 . The bottom surface of the second square tube 508 is fixedly connected to the square plate 4 , and the second slider 506 is slidably connected to the inner wall of the second square tube 508 .

[0026] A spring 509 is fixedly connected to the upper surface of the U-shaped plate 505 , an end of the spring 509 away from the U-shaped plate 505 is fixedly connected to a connecting plate 510 , and a limiting member 511 is fixedly connected to the upper surface of the connecting plate 510 .

[0027] A T-shaped circular slide bar 512 is fixedly connected to the bottom surface of the connecting plate 510 , a cylinder 513 is slidably connected to the outer surface of the T-shaped circular slide bar 512 , and one end of the cylinder 513 away from the T-shaped circular slide bar 512 is fixedly connected to the U-shaped plate 505 .

[0028] By starting the motor 502, the motor 502 drives the screw rod 503 to rotate, the screw rod 503 drives the first slider 504 to move upward, the first slider 504 simultaneously drives the U-shaped plate 505 and the second slider 506 to move upward, the U-shaped plate 505 simultaneously drives the spring 509, the connecting plate 510, the limit piece 511, the T-shaped circular slide bar 512, and the cylinder 513 to move upward, so that the oil pump handle 7 can be limited, avoiding the problem that the staff repeatedly presses the oil pump handle 7 too quickly, causing the movable clamp body 12 to clamp the workpiece, thereby ensuring the processing quality and precision of the workpiece.

[0029] There are three supporting legs 2 , all of which are arranged on the bottom surface of the base plate 1 .

[0030] Two U-shaped frames 3 are provided, both of which are arranged on the upper surface of the bottom plate 1 in a symmetrical state.

[0031] Two springs 509 are provided, both of which are arranged on the upper surface of the U-shaped plate 505 in a symmetrical state.

[0032] Two T-shaped circular sliding rods 512 and two cylinders 513 are provided, both of which are arranged on the upper surface of the U-shaped plate 505 in a symmetrical state.

[0033] The pressure sensor 14 is electrically connected to the motor 502 .

[0034] The material of the limiting member 511 is set to be rubber.

[0035] By providing the spring 509 and the limiter 511, when the oil pump handle 7 is limited, the oil pump handle 7 can be buffered to reduce some vibrations, and the oil pump handle 7 can also be protected to ensure the protectiveness of the device.

[0036] Working principle: When the device is used, the workpiece is first placed on the bottom plate 1, and then the oil pump handle 7 is repeatedly pressed. Under the action of the two-way manual oil pump 6, the oil pipe 9, the oil cylinder 10 and the hydraulic rod 11, the hydraulic rod 11 drives the movable clamp body 12 to move in the direction of the fixed clamp body 13, so as to facilitate clamping the workpiece. The pressure sensor 14 is set to detect the pressure during clamping. When the pressure value reaches the set value, it will transmit a signal to the motor 502 to start the motor 502, and then the motor 502 drives The screw rod 503 rotates, and the screw rod 503 drives the first slider 504 to move upward. The first slider 504 simultaneously drives the U-shaped plate 505 and the second slider 506 to move upward. The U-shaped plate 505 simultaneously drives the spring 509, the connecting plate 510, the limit piece 511, the T-shaped circular slide bar 512, and the cylinder 513 to move upward, so that the oil pump handle 7 can be limited, avoiding the problem that the staff repeatedly presses the oil pump handle 7 too quickly, causing the movable clamp body 12 to clamp the workpiece, thereby ensuring the processing quality and precision of the workpiece.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A manual hydraulic precision flat-nose pliers, comprising a base plate (1), characterized in that: The bottom surface of the base plate (1) is fixedly connected to a supporting foot (2), the upper surface of the base plate (1) is fixedly connected to a U-shaped frame (3), the upper surface of the U-shaped frame (3) is fixedly connected to a square plate (4), the upper surface of the square plate (4) is provided with a limiting mechanism (5), the upper surface of the square plate (4) is installed with a two-way manual oil pump (6), the outer surface of the two-way manual oil pump (6) is provided with an oil pump handle (7), the outer surface of the two-way manual oil pump (6) is provided with a reversing valve (8), the oil delivery end of the two-way manual oil pump (6) is fixedly connected to an oil pipe (9), and the The end of the oil pipe (9) away from the two-way manual oil pump (6) is fixedly connected to an oil cylinder (10), and the oil cylinder (10) is fixedly connected to the upper surface of the base plate (1). A hydraulic rod (11) is installed at the output end of the oil cylinder (10), and the end of the hydraulic rod (11) away from the oil cylinder (10) is fixedly connected to a movable caliper body (12), and the movable caliper body (12) is slidably connected to the outer surface of the base plate (1). The upper surface of the base plate (1) is fixedly connected to a fixed caliper body (13), and a pressure sensor (14) is installed on a side of the fixed caliper body (13) close to the movable caliper body (12).

2. A manual hydraulic precision flat-nose pliers according to claim 1, characterized in that: The limiting mechanism (5) comprises a first square tube (501), the first square tube (501) being fixedly connected to the upper surface of the square plate (4), a motor (502) being mounted on the upper surface of the first square tube (501), a screw rod (503) being mounted at the output end of the motor (502), and the screw rod (503) being rotatably connected to the inside of the first square tube (501).

3. A manual hydraulic precision flat-nose pliers according to claim 2, characterized in that: The outer surface of the screw rod (503) is threadedly connected to a first slider (504), the first slider (504) is slidably connected to the inner wall of the first square tube (501), the outer surface of the first slider (504) is fixedly connected to a U-shaped plate (505), and the outer surface of the U-shaped plate (505) is fixedly connected to a second slider (506).

4. A manual hydraulic precision flat-nose pliers according to claim 3, characterized in that: The second sliding block (506) is slidably connected to a sliding rod (507) inside, and the two ends of the sliding rod (507) are fixedly connected to a second square tube (508), the bottom surface of the second square tube (508) is fixedly connected to the square plate (4), and the second sliding block (506) is slidably connected to the inner wall of the second square tube (508).

5. The manual hydraulic precision flat-nose pliers according to claim 3, characterized in that: A spring (509) is fixedly connected to the upper surface of the U-shaped plate (505), one end of the spring (509) away from the U-shaped plate (505) is fixedly connected to a connecting plate (510), and a limiting member (511) is fixedly connected to the upper surface of the connecting plate (510).

6. A manual hydraulic precision flat-nose pliers according to claim 5, characterized in that: The bottom surface of the connecting plate (510) is fixedly connected to a T-shaped circular sliding rod (512), the outer surface of the T-shaped circular sliding rod (512) is slidably connected to a cylinder (513), and one end of the cylinder (513) away from the T-shaped circular sliding rod (512) is fixedly connected to the U-shaped plate (505).

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