Multi-station manual adjustable flat tongs

Abstract

The utility model provides a pair of multi-station manual adjustable flat tongs, which solves the technical problems that when the conventional flat tongs are used, only a hydraulic oil cylinder is used for clamping, and when the clamping pressure is larger, accidents are easy to occur, and can be widely applied to the field of flat tongs. The clamp specifically comprises a clamp body, a sliding rail is arranged on the clamp body, a pressing sliding block and a front jaw are arranged on the sliding rail in a sliding fit mode, a rear jaw is arranged at one end of the clamp body, a linkage piece is arranged in the pressing sliding block in a rotating fit mode, an adjusting screw rod is arranged on the linkage piece in a threaded fit mode, an adjusting groove is further formed in the pressing sliding block, and the adjusting screw rod is arranged in the adjusting groove. A plurality of limiting grooves are further formed in the inner side of the sliding rail, clamping pieces matched with the limiting grooves are arranged at the ends of the linkage pieces, the adjusting screw rod is sleeved with a lower pull ring, a spring rod is fixedly connected to the lower pull ring, and a fixing nut located outside the pressing sliding block is arranged at the end of the spring rod.

Description

Technical Field

[0001] The utility model belongs to the technical field of flat-nose pliers, in particular to a multi-position manually adjustable flat-nose pliers. Background Art

[0002] The utility model patent with publication number CN203031346U discloses a pair of flat-nose pliers, and in particular, a pair of flat-nose pliers for hydraulic presses. The flat-nose pliers for hydraulic presses comprise a pliers body and a movable jaw, and are characterized in that: a hydraulic cylinder is mounted on the tail end of the pliers body; a base is movably mounted on the lower end of the pliers body via bolts; the movable jaw is mounted on the top of the pliers body via fixed plates on both sides; and the movable jaw is connected to the hydraulic cylinder via a piston rod. In the flat-nose pliers for hydraulic presses, the base can rotate along the connection with the pliers body; a scale that can rotate 45 degrees left and right is provided on the base. Sliding holes are provided at the four corners of the flat surface of the base. A bracket is fixed to the end side of the tail end of the pliers body, and a secretion switch is fixed to the upper end of the bracket.

[0003] The above utility model only performs the clamping action through the hydraulic oil cylinder when in use. When the clamping pressure is large, accidents are likely to occur. Utility Model Content

[0004] The purpose of the utility model is to solve the deficiencies of the above-mentioned technology and provide a multi-position manually adjustable flat-nose pliers.

[0005] To this end, the utility model provides a multi-station manually adjustable flat-nose pliers, including a pliers body, a slide rail is provided on the pliers body, a clamping slider and a front jaw are slidably fitted on the slide rail, a rear jaw is provided at one end of the pliers body, a linkage piece is rotatably fitted in the clamping slider, an adjusting screw is fitted on the linkage piece through a thread, an adjusting groove is also provided on the clamping slider, and the adjusting screw is arranged inside the adjusting groove; a plurality of limit grooves are also provided on the inner side of the slide rail, a clamping piece adapted to the limit groove is provided at the end of the linkage piece, a lower pull ring is sleeved on the adjusting screw, a spring rod is fixedly connected to the lower pull ring, and a fixing nut located outside the clamping slider is provided at the end of the spring rod.

[0006] Furthermore, a plurality of clamping springs are provided on the rear jaw, and the clamping springs are connected to the inside of the rear jaw through disc springs and extend and retract within the rear jaw.

[0007] Furthermore, a limit block is provided on the clamping spring piece to prevent the clamping spring piece from rotating.

[0008] Furthermore, a plurality of drainage holes are provided on the side of the clamp body to discharge cooling water during the processing.

[0009] The utility model provides a multi-position manually adjustable flat-nose pliers, which has the following beneficial effects:

[0010] The distance between the front and rear jaws is adjustable, making it suitable for various sizes of clamping tools, making it highly versatile. A locking mechanism provides a limit stop after the front jaws are clamped, preventing damage to the jaws under high clamping pressure and ensuring the safety of the clamping tool.

[0011] The front jaw is composed of 8 points, and each point is pushed by a disc spring, which can evenly distribute the force from the hydraulic cylinder to the 8 points. Up to 8 workpieces can be clamped, and the clamping force of each workpiece is more secure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 It is a structural diagram of the interior of the utility model;

[0014] Markings in the figure: 1. Clamp body; 2. Front jaw; 3. Rear jaw; 4. Clamping slider; 5. Linkage; 6. Adjustment slot; 7. Adjustment screw; 8. Lower pull ring; 9. Spring rod; 10. Fixing nut; 11. Limiting slot; 12. Engaging part; 13. Disc spring; 14. Clamping spring; 15. Slide rail; 16. Limiting block; 17. Drainage hole. DETAILED DESCRIPTION

[0015] The present invention is further described below with reference to the accompanying drawings and specific embodiments to facilitate understanding of the present invention. The methods used in the present invention are conventional methods unless otherwise specified; the raw materials and devices used are conventional commercially available products unless otherwise specified.

[0016] like Figure 1 As shown in Figure 2, the utility model provides a multi-station manually adjustable flat-nose pliers, including a pliers body 1, a slide rail 15 is provided on the pliers body 1, a clamping slider 4 and a front jaw 2 are slidably fitted on the slide rail 15, and a rear jaw 3 is provided at one end of the pliers body 1. A linkage part 5 is rotatably fitted in the clamping slider 4, and an adjusting screw 7 is threadedly fitted on the linkage part 5. An adjusting slot 6 is also provided on the clamping slider 4, and the adjusting screw 7 is arranged inside the adjusting slot 6. A plurality of limiting slots 11 are also provided on the inner side of the slide rail 15, and a snap-fit ​​part 12 that matches the limiting slot 11 is provided at the end of the linkage part 5. A lower pull ring 8 is sleeved on the adjusting screw 7, and a spring rod 9 is fixedly connected to the lower pull ring 8. The end of the spring rod 9 is provided with a fixing nut 10 located outside the clamping slider 4.

[0017] The front jaw 2 is equipped with eight clamping springs 14, which are connected to the interior of the front jaw 2 via disc springs 13 and can be extended and retracted within the front jaw 2. The elastic expansion and contraction of the disc springs 13 provide a certain distance buffer for multiple clamping fixtures with relatively small length differences, ensuring relatively uniform force on the different clamping fixtures. The clamping springs 14 are also equipped with limit blocks 16 to prevent the clamping springs 14 from rotating and affecting the clamping effect.

[0018] When in use, the distance between the front jaw 2 and the rear jaw 3 is adjusted to be slightly larger than the length of the clamping tool, the clamping tool is placed between the front jaw 2 and the rear jaw 3, and then the adjusting screw 7 is lifted upward along the adjusting slot 6, driving the linkage 5 to rotate counterclockwise, so that the engaging member 12 is separated from the limiting slot 11, and the pressing slide 4 is pushed toward the front jaw 2 until the pressing slide 4 is tightly against the front jaw 2; the adjusting screw 7 is loosened, and the adjusting screw 7 is reset under the pulling force of the spring rod 9, and the engaging member 12 is re-engaged with the limiting slot 11. The adjusting screw 7 is then rotated so that the end of the adjusting screw 7 squeezes the pressing slide 4, thereby causing the front jaw 2 and the rear jaw 3 to clamp the clamping tool.

[0019] A plurality of drainage holes 17 are provided on the side of the clamp body 1 to discharge the cooling water during the processing.

[0020] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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.

[0021] However, the above description is merely a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the patent of the present invention should still fall within the scope covered by the claims of the present invention.

Claims

1. A multi-position manually adjustable flat-nose pliers, comprising a pliers body, a slide rail provided on the pliers body, a pressing slider and a front jaw slidably fitted on the slide rail, a rear jaw provided at one end of the pliers body, characterized in that: A linkage piece is rotated inside the clamping slider, and an adjusting screw is threaded on the linkage piece. An adjusting slot is also provided on the clamping slider, and the adjusting screw is arranged inside the adjusting slot; a plurality of limit slots are also provided on the inner side of the slide rail, and a snap-fitting piece that matches the limit slot is provided at the end of the linkage piece. A lower pull ring is sleeved on the adjusting screw, and a spring rod is fixedly connected to the lower pull ring, and a fixing nut located outside the clamping slider is provided at the end of the spring rod.

2. The multi-position manually adjustable flat-nose pliers according to claim 1, characterized in that: The rear jaw is provided with a plurality of clamping springs, which are connected to the inside of the rear jaw through disc springs and extend and retract within the rear jaw.

3. The multi-position manually adjustable flat-nose pliers according to claim 2, characterized in that: A limit block is also provided on the clamping spring piece to prevent the clamping spring piece from rotating.

4. The multi-position manually adjustable flat-nose pliers according to any one of claims 1 to 3, characterized in that: There are multiple drainage holes on the side of the clamp body to discharge the cooling water during the processing.

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