CN201158008Y - Self-adjusting pipe vise - Google Patents

Abstract

The utility model discloses a self-adjusting pipe bench vise, which comprises a bench vise seat, a fixed tong head, a movable tong head, a pressure bar, an operating handle, and an unlocking handle. The fixed tong head is fixedly connected to the bench vise seat. The movable pliers head is hinged to one end of the pressure bar through a pin, and is connected to the tension spring fixed plate through a tension spring; the operating handle is hinged to the other end of the pressure bar through a pin; the slide bar is installed on the front slide bar seat and the rear slide bar seat, The slider and the pressure spring are set on the slide rod, and the slider can slide along the slide rod; the L-shaped rod is respectively hinged with the cam and the operating handle through two pin shafts; the unlocking handle is hinged on the operating handle through a pin; A torsion spring is installed between the handle pins; an adjustment screw spring is installed between the adjustment screw and the L-shaped bar. The utility model can automatically adjust the width of the jaws according to the diameter of the pipe fittings, can self-lock after the pipe fittings are clamped, and can be adjusted according to the requirements of the clamping force. It is a hardware tool commonly used in industrial and mining enterprises and machinery maintenance industries.

Description

Self-adjusting pipe vise

technical field

The utility model relates to a hardware tool, in particular to a self-adjusting pipe bench vise for clamping pipe fittings.

Background technique

The pipe bench vise is a commonly used hardware tool, which is mainly used to clamp the steel pipe for cutting, reaming and other operations. The pipe bench vise that uses at present, what adopted all is the closed frame structure of mouth shape. For the convenience of clamping steel pipes, the closed frame structure is generally divided into a fixed lower frame and a movable upper frame. One end of the movable upper frame is hinged with the fixed lower frame, and the other end is equipped with a movable hook. All need to open movable upper frame in advance before loading pipe, steel pipe is put away, then movable upper frame is closed, hangs movable hook piece, rotates leading screw clamping pipe fitting again, there is a lot of inconvenience in use.

Contents of the invention

The purpose of this utility model is to provide a self-adjusting pipe bench vise. The pipe bench vise adopts an open frame structure. When installing the pipe, just put the steel pipe in directly, and then press down the operating handle to clamp the pipe fittings. There is no need to adjust the screw-in distance of the lead screw according to the diameter of the pipe fitting, and it can be self-locked after clamping, and the clamping force can be adjusted.

The purpose of this utility model is achieved through the following technical solutions:

A self-adjusting pipe bench vise, characterized in that it includes a bench vise base with an open structure, a fixed pincer head, a pressure bar, an operating handle, an unlocking handle, and a movable pincer head, and the fixed pincer head is fixedly connected by a fixed pincer head On the bench vise seat, the movable pliers head is hinged to one end of the pressure rod through the movable pliers head pin, and can freely swing around the axis of the movable pliers head pin, and is connected with the tension spring fixed plate through the tension spring; The hole in the clamp seat slides freely; the operating handle is hinged to the other end of the pressure rod through the operating handle pin; It can slide along the slide rod; the L-shaped rod is respectively hinged with the cam and the operating handle through the L-shaped rod pin and the locking pin; the unlocking handle is hinged on the operating handle through the unlocking handle pin; reed.

In the utility model, an adjusting screw spring is housed between the adjusting screw and the L-shaped bar.

When the pipe vise is not clamping the pipe fittings, the movable tong head is at the farthest position from the fixed tong head under the action of the tension spring, and the opening position of the bench vise is the largest. The slide block is in the closest position to the front slide bar seat under the action of the stage clip. The unlocking handle is close to the operating handle under the action of the torsion spring.

To clamp the fitting, depress the operating handle. Since the hardness of the compression spring is greater than that of the extension spring, firstly the operating handle pushes the pressure rod and the movable pliers to move toward the fixed pliers and the pipe fittings through the operating handle pin. When the distance between the movable pliers and the fixed pliers After the automatic determination, the operating handle starts to rotate around the operating handle pin, and the locking pin, L-shaped rod, L-shaped rod pin, cam and slider pin are used to push the slider to compress the compression spring to move toward the rear slider seat, and the cam simultaneously Turn around the slider pin towards the slider bar. When the cam turns to a certain position, its function is equivalent to a wedge, and the slider is fixed on the slider, and the position of the L-shaped rod pin is fixed accordingly. At this time, continue to press down the operating handle until the locking pin and the operating handle pin and The L-shaped rod pins are in a straight line, so that the locking pin is at the dead point, and the self-adjusting pipe bench vise realizes self-locking while clamping the pipe fittings.

When the unlocking handle uses the unlocking handle pin as the fulcrum and rotates toward the bench vise seat, since the boss on the unlocking handle is on the sliding seat, the operating handle is rotated around the operating handle pin through the unlocking handle pin at this time, so that the locking pin Break away from the dead point position, and the self-adjusting pipe bench vise is released from the locked state. After the bench vise is released from the locked state, the unlocking handle returns to the position close to the operating handle under the action of the torsion spring.

Compared with the prior art, the utility model can automatically adjust the angle of the jaws according to the diameter of the pipe fittings, self-lock after the pipe fittings are clamped, and can be adjusted according to the requirements of the clamping force. Especially for thin-walled pipe fittings or parts with soft surfaces, it will not pinch flat pipe fittings or damage the surface of pipe fittings, and is easy to operate and easy to use.

Description of drawings

Fig. 1 is the structural representation of the utility model when free state;

Fig. 2 is a schematic structural view of the utility model when the workpiece is clamped;

Fig. 3 is a structural schematic diagram of the utility model when the clamping is released;

Explanation of main symbols in the attached drawings:

1-Active pliers pin 2-Fixed pliers

3-fixing pliers head pin 4-bench vise seat

5-Active clamp head 6-Extension spring

7-Press bar 8-Extension spring fixed plate

9-Operating handle pin 10-Locking pin

11-Adjusting screw 12-Adjusting screw spring

13-Unlock handle pin 14-Torsion spring

15-Unlocking handle 16-Operating handle

17-Rear slider seat 18-Clamp spring

19-slider 20-slider pin

21-slider 22-cam

23-L-shaped rod pin 24-Front slider seat

25-L shaped rod

Detailed ways

The utility model will be described in detail in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, a self-adjusting pipe bench vise, the fixed pincer head 2 is fixedly connected to the bench vise base 4 through the fixed pincer head pin 3, and the movable pincer head 5 is hinged to the pressure rod 7 through the movable pincer head pin 1 One end of the pin, and can freely swing around the axis of the movable pliers head pin 1, and at the same time connect with the tension spring fixed plate 8 through the tension spring 6; the pressure rod 7 can slide freely along the hole in the bench vise seat 4; The pin 9 is hinged on the other end of the pressure bar 7; the slide bar 21 is installed on the front slide bar seat 24 and the rear slide bar seat 17, the slide block 19 and the stage clip 18 are sleeved on the slide bar 21, and the slide block 19 can be moved along the slide bar 21 sliding; the L-shaped bar 25 is hinged with the cam 22 and the operating handle 16 respectively by the L-shaped bar pin 23 and the locking pin 10; the unlocking handle 15 is hinged on the operating handle 16 by the unlocking handle pin 13; A torsion spring 14 is installed between the pins 13; an adjustment screw spring 12 is installed between the adjustment screw 11 and the L-shaped bar 25.

When the pipe vise is not clamping the pipe, the movable clamp head 5 is at the farthest position from the fixed clamp head 2 under the action of the tension spring 6, and the opening position of the bench vise is the largest. Now the slide block 19 is in the closest position to the front slide bar seat 24 under the action of the stage clip 18 , and the unlocking handle 15 is abutted against the operating handle 16 under the action of the torsion spring 14 .

When the pipe fitting needs to be clamped, the operating handle 16 is pressed down. Because the hardness of compression spring 18 is greater than the hardness of extension spring 6, so first operating handle 16 pushes pressure bar 7 and movable clamp head 5 to move toward fixed clamp head 2 and pipe fitting direction through operating handle pin 9 through operating handle 16, when movable clamp head 5 and fixed clamp After the distance between the heads 2 is automatically determined according to the pipe diameter, the operating handle 16 starts to rotate around the operating handle pin 9, and the slider is pushed by the locking pin 10, the L-shaped rod 25, the L-shaped rod pin 23, the cam and the slider pin 20 19 Compress the compression spring 18 and move towards the rear slide bar seat 17, at this moment the cam 22 rotates around the slide block pin 20 towards the slide bar 21 at the same time. When the cam 22 turns to a certain position, its function is equivalent to a wedge, and the slider 19 is fixed on the slide rod 21, and the position of the L-shaped rod pin 23 is fixed thereupon. At this time, continue to depress the operating handle 16 until the locking pin is locked. 10 is in line with the operating handle pin 9 and the L-shaped bar pin 23, so that the locking pin 10 is in the dead point position, and the self-adjusting pipe bench vise realizes self-locking while clamping the pipe fitting. as shown in picture 2. The adjusting screw 11 can be used to adjust the clamping force when the pipe bench vise clamps the pipe.

When the unlocking handle 15 rotates toward the bench vise seat 4 with the unlocking handle pin 13 as the fulcrum, since the boss on the unlocking handle 15 is on the sliding seat 19, the operating handle 16 is wound around the operating handle by the unlocking handle pin 13 at this time. The pin 9 rotates to make the locking pin 10 break away from the dead point position, and the self-adjusting pipe bench vise releases the locked state. After the bench vise is unlocked, the unlocking handle 15 returns to the position close to the operating handle 16 under the action of the torsion spring 14, as shown in FIG. 3 .

Claims (5)

1, a kind of self-regulation clamp-on pipe vise, it is characterized in that: it comprises bench vice seat (4), fixed pliers head (2), movable binding clip (5), depression bar (7), operating grip (16), release lever (15), fixed pliers head (2) is fixed on the bench vice seat (4) by fixed pliers head pin (3), movable binding clip (5) is articulated in an end of depression bar (7) by movable binding clip pin (1), and links to each other with extension spring fixed head (8) by extension spring (6); Operating grip (16) is articulated in the other end of depression bar (7) by operating grip pin (9); Slide bar (21) is contained on preceding slider block (24) and the back slider block (17), and slide block (19) and stage clip (18) are sleeved on the slide bar (21), and slide block (19) can slide along slide bar (21); L shaped bar (25) is hinged with cam (22) and operating grip (16) respectively by L shaped lever pin (23) and locking pin (10); Release lever (15) is articulated on the operating grip (16) by release lever pin (13).

2, self-regulation clamp-on pipe vise according to claim 1 is characterized in that: described bench vice seat (4) is a hatch frame.

3, self-regulation clamp-on pipe vise according to claim 1 is characterized in that: movable binding clip (5) can freely swing around movable binding clip pin (1).

4, self-regulation clamp-on pipe vise according to claim 1 is characterized in that: between release lever (15) and the release lever pin (13) torsion spring (14) is housed.

5, self-regulation clamp-on pipe vise according to claim 1 is characterized in that: between adjustment screw (11) and the L shaped bar (25) adjustment screw spring (12) is housed.

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