Manual clamp for forging

Abstract

The utility model belongs to the technical field of forging, and particularly relates to a manual clamp for forging, which comprises a first handle, a first clamping arm is fixedly connected to the outer side of the first handle, a handle adjusting component is arranged on the outer side of the first clamping arm, a limiting pin is connected to the inner side of the first clamping arm in a clamping manner, and a quick release component is arranged on the outer side of the limiting pin. According to the manual clamp for forging, a semicircular cylindrical plug pin is replaced with the cylindrical plug pin, so that the situation that a clamping opening is not limited by a wave-shaped groove and changes due to the rotation angle is avoided, meanwhile, the limiting pin and the quick release assembly are matched with each other, the limiting pin can be quickly disassembled, and the manual clamp is convenient to use. And the clamping opening is inserted into a proper wave-shaped groove, so that the time for adjusting the clamping opening is not greatly different from the original time.

Description

Technical Field

[0001] This utility model relates to the field of forging technology, and in particular to a manual clamp for forging. Background Technology

[0002] Forging pliers are indispensable tools in metal forging processes, primarily used to grip, hold, or manipulate metal workpieces during forging, heating, and cooling. Their history can be traced back to ancient blacksmith workshops. With the development of technology, the design of pliers has been gradually optimized, resulting in more refined structures and enhanced operability. Common pliers include straight-head, curved-head, flat-head, and special-purpose pliers, capable of meeting various workpiece shapes and forging requirements. Their basic structure consists of a plier head, handle, and connecting components, utilizing the lever principle to provide sufficient clamping force, ensuring stable and precise operation of the workpiece at high temperatures, preventing deformation or burns. Pliers are typically made of high-carbon steel, alloy steel, or stainless steel to guarantee their strength, wear resistance, and high-temperature resistance. With advancements in forging technology, the requirements for pliers are constantly increasing, and future advancements in materials and processes may further improve their convenience, durability, and adaptability.

[0003] However, in actual use of existing solutions, the clamp jaws need to be adjusted due to the different sizes of the workpieces. One type of clamp with adjustable jaws has a wave-shaped groove on one handle and a semi-circular cylindrical pin on the inner side. The semi-circular cylindrical pin is fixedly connected to the other handle. When the two handles are opened to their maximum angle, the semi-circular cylindrical pin can move laterally within the wave-shaped groove to adjust the jaw size. In actual use, the size of the workpiece and the jaw size can only be estimated in advance to adjust the jaw size. However, if the estimation is incorrect, the semi-circular cylindrical pin may rotate excessively within the wave-shaped groove during clamping, causing the jaw to suddenly widen, resulting in a change in clamping and potentially causing the workpiece to fall and creating a hazard.

[0004] Therefore, this utility model provides a hand clamp for forging. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art where, if the estimation is wrong, the semi-circular cylindrical pin may rotate excessively within the wave groove during clamping due to an insufficiently small clamping opening, causing the clamping opening to suddenly become larger, resulting in a change in clamping and potentially causing the workpiece to fall and pose a danger. Therefore, this invention proposes a manual clamp for forging.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A forging hand clamp includes a first handle, a second clamping arm fixedly connected to the outer side of the first handle, a first clamping arm rotatably connected to the inner side of the second clamping arm, a second handle fixedly connected to the outer side of the first clamping arm, a handle adjustment assembly provided on the outer side of the second handle, a limit pin engaged with the inner side of the second clamping arm, and a quick-release assembly provided on the outer side of the limit pin.

[0008] As a preferred technical solution of this application, the handle adjustment component includes a limiting frame, the limiting frame is fixedly connected to the second handle, and a wave groove is provided on the inner side of the limiting frame.

[0009] As a preferred technical solution of this application, the quick-release assembly includes a limiting sleeve, which is engaged with a wave groove. A uniformly distributed limiting ball is slidably connected to the inner side of the limiting sleeve. A uniformly distributed connecting rod is fixedly connected to the outer side of the limiting sleeve. A fixing sleeve is fixedly connected to the outer side of the connecting rod. A locking sleeve is slidably connected to the outer side of the connecting rod. The locking sleeve is engaged with the limiting ball and slidably connected to the limiting sleeve.

[0010] As a preferred technical solution of this application, a spring is fixedly connected to the top wall of the engaging sleeve, and the other end of the spring is fixedly connected to the inner wall of the fixed sleeve.

[0011] As a preferred technical solution of this application, a slot is provided on the outer side of the limiting pin, and the slot is engaged with the limiting ball.

[0012] As a preferred technical solution of this application, heat insulation layers are provided on the outer sides of the first handle and the second handle.

[0013] Compared with the prior art, this utility model provides a hand clamp for forging, which has the following beneficial effects:

[0014] 1. The forging hand clamp of this utility model replaces the semi-circular cylindrical pin with a cylindrical pin, thereby avoiding the situation where the clamping jaw changes due to the rotation angle and is not restricted by the wave groove. At the same time, through the cooperation of the limiting pin and the quick release component, the limiting pin can be quickly removed and inserted into the appropriate wave groove, so that the clamping jaw adjustment time is not significantly different from the original.

[0015] 2. The forging hand clamp described in this utility model allows for quick removal of the limiting pin via a quick-release assembly. This enables rapid disassembly of the clamp after use, making cleaning and maintenance more convenient, and resulting in a simpler and more durable clamp with reduced wear during disassembly and installation. The smoother and more seamless clamp fixing and disassembly process reduces component wear and extends its service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 And enlarged image;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 And enlarged image;

[0018] Figure 3 This is a cross-sectional structural diagram of the first handle in this utility model;

[0019] Figure 4 This is a schematic cross-sectional view of the fixed sleeve in this utility model. Figure 1 ;

[0020] Figure 5 This is a schematic cross-sectional view of the fixed sleeve in this utility model. Figure 2 ;

[0021] Figure 6 yes Figure 5 Enlarged view of a portion of point A in the middle.

[0022] In the picture:

[0023] 1. First handle; 11. First clamping arm; 12. Second handle; 13. Second clamping arm; 14. Limiting frame; 15. Wave groove; 2. Limiting pin; 21. Slot; 3. Limiting sleeve; 31. Limiting ball; 32. Connecting rod; 33. Fixing sleeve; 34. Spring; 35. Engaging sleeve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example

[0025] Reference Figure 1-6 A forging hand clamp includes a first handle 1, a second clamping arm 13 fixedly connected to the outside of the first handle 1, the second clamping arm 13 being fixed by the first handle 1, a first clamping arm 11 rotatably connected to the inside of the second clamping arm 13, the first clamping arm 11 being limited by the second clamping arm 13, a second handle 12 fixedly connected to the outside of the first clamping arm 11, the second handle 12 being fixed by the first clamping arm 11, a handle adjustment component provided on the outside of the second handle 12, a limit pin 2 engaging with the inside of the second clamping arm 13, and a quick-release component provided on the outside of the limit pin 2.

[0026] The handle adjustment component includes a limiting frame 14, which is fixedly connected to the second handle 12. The limiting frame 14 is fixed by the second handle 12, and a wave groove 15 is provided on the inner side of the limiting frame 14.

[0027] The quick-release assembly includes a limiting sleeve 3, which engages with a wave groove 15. By inserting the limiting sleeve 3 into different positions inside the wave groove 15, the second handle 12 and the first clamping arm 11 can be connected to the first handle 1 and the second clamping arm 13, thereby adjusting the clamping jaw size. A uniformly distributed limiting ball 31 is slidably connected to the inner side of the limiting sleeve 3. The limiting ball 31 is stored in uniformly distributed through holes on the inner side of the limiting sleeve 3, with both ends of the through holes designed to be tapered, thus limiting the movement of the limiting ball 31 within the through holes and preventing it from falling out. A uniformly distributed connecting rod 32 is fixedly connected to the outer side of the limiting sleeve 3. Multiple connecting rods 32 are simultaneously fixed by the limiting sleeve 3. A fixed sleeve 33 is fixedly connected to the side, and the fixed sleeve 33 is fixed by a connecting rod 32. At the same time, the connecting rod 32 connects the limiting sleeve 3 and the fixed sleeve 33. A locking sleeve 35 is slidably connected to the outside of the connecting rod 32. The locking sleeve 35 is limited by the connecting rod 32, so that the locking sleeve 35 can only slide outside the connecting rod 32. The locking sleeve 35 is engaged with the limiting ball 31. The locking sleeve 35 is moved up and down, thereby controlling whether the locking ball 31 is engaged. After the locking sleeve 35 moves upward, the locking ball 31 is released, allowing the limiting ball 31 to move outward. The locking sleeve 35 is slidably connected to the limiting sleeve 3, and the limiting sleeve 3 limits the locking sleeve 35.

[0028] A spring 34 is fixedly connected to the top wall of the engaging sleeve 35. The engaging sleeve 35 fixes the spring 34. The other end of the spring 34 is fixedly connected to the inner wall of the fixing sleeve 33. The fixing sleeve 33 fixes the spring 34. At the same time, the spring 34 pushes away from the fixing sleeve 33 with the inner wall of the fixing sleeve 33 as the stress point, so that the engaging sleeve 35 fits against the limiting sleeve 3.

[0029] The outer side of the limiting pin 2 is provided with a slot 21, which engages with the limiting ball 31. When the limiting ball 31 is engaged and limited by the engaging sleeve 35, the limiting ball 31 engages with the slot 21, thereby fixing the relative position of the limiting pin 2 and the limiting sleeve 3.

[0030] A heat insulation layer is provided on the outside of the first handle 1 and the second handle 12. By providing a heat insulation layer on the outside of the first handle 1 and the second handle 12, the heat transferred from the workpiece after the equipment has been used for a long time can be prevented from affecting the user and thus affecting the processing efficiency.

[0031] Specifically, when using this forging hand clamp: First, pull the engaging sleeve 35 outwards, moving it away from the limiting sleeve 3, while simultaneously compressing the spring 34, thus releasing the locking of the limiting ball 31. This allows the limiting ball 31 to move outwards. Then, pull the limiting pin 2 out of the limiting sleeve 3, squeezing the limiting ball 31 through the limiting sleeve 3, forcing it to move outwards. After the limiting pin 2 is removed from the limiting sleeve 3, the fixing of the first handle 1, the second clamping arm 13, the second handle 12, and the first clamping arm 11 is released. Then, insert the limiting pin 2 into the inside of the first clamping arm 11, and then adjust the second clamping arm 1... The position of the first clamping arm 11 and the second clamping arm 13 within the wave groove 15 is used to adjust the clamping size. Then, the limiting sleeve 3 is placed on the outside of the limiting pin 2 and inserted into the appropriate position inside the wave groove 15. After the limiting pin 2 is fully inserted into the limiting sleeve 3, the engaging sleeve 35 is released. The spring 34 pushes the engaging sleeve 35 away from the fixed sleeve 33 with the inner wall of the fixed sleeve 33 as the stress point, so that the engaging sleeve 35 moves towards the limiting sleeve 3. During the process, the limiting ball 31 is squeezed, forcing the limiting ball 31 to move inward, thereby engaging with the groove 21, completing the fixation between the limiting pin 2 and the limiting sleeve 3, and fixing the clamping size.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A forging hand clamp, comprising a first handle (1), characterized in that, The first handle (1) is fixedly connected to the outside of the second clamping arm (13), the second clamping arm (13) is rotatably connected to the inside of the first clamping arm (11), the first clamping arm (11) is fixedly connected to the outside of the second handle (12), the second handle (12) is provided with a handle adjustment component on the outside of the second handle (12), the second clamping arm (13) is engaged with a limit pin (2), and the limit pin (2) is provided with a quick release component on the outside of the limit pin (2).

2. The forging hand clamp according to claim 1, characterized in that, The handle adjustment assembly includes a limiting frame (14), the limiting frame (14) is fixedly connected to the second handle (12), and a wave groove (15) is provided on the inner side of the limiting frame (14).

3. A forging hand clamp according to claim 2, characterized in that, The quick-release assembly includes a limiting sleeve (3), which engages with a wave groove (15). A uniformly distributed limiting ball (31) is slidably connected to the inner side of the limiting sleeve (3). A uniformly distributed connecting rod (32) is fixedly connected to the outer side of the limiting sleeve (3). A fixing sleeve (33) is fixedly connected to the outer side of the connecting rod (32). A locking sleeve (35) is slidably connected to the outer side of the connecting rod (32). The locking sleeve (35) engages with the limiting ball (31) and is slidably connected to the limiting sleeve (3).

4. A forging hand clamp according to claim 3, characterized in that, A spring (34) is fixedly connected to the top wall of the engaging sleeve (35), and the other end of the spring (34) is fixedly connected to the inner wall of the fixed sleeve (33).

5. A forging hand clamp according to claim 4, characterized in that, The limiting pin (2) has a slot (21) on its outer side, and the slot (21) engages with the limiting ball (31).

6. A forging hand clamp according to claim 1, characterized in that, The first handle (1) and the second handle (12) are provided with heat insulation layers on their outer sides.

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