Valve seat clamp for heating furnace

Abstract

The utility model relates to the technical field of clamps, in particular to a valve seat clamp for a heating furnace, which comprises two clamp arms and a holding rod positioned between the two clamp arms, the holding rod is arranged at the handheld ends of the clamp arms, a pin shaft is fixed at the head end of the holding rod, the two clamp arms are rotatably connected with the holding rod through the pin shaft, and an arc-shaped gripper is formed when the clamping ends of the two clamp arms are closed. Compared with the prior art, according to the technical scheme, when the valve seat green body is clamped, a clamp arm does not need to be manually operated to clamp the valve seat green body, only the holding rod is held by hand to transfer the valve seat green body to a punching machine after the valve seat green body is clamped, the clamping efficiency is greatly improved, and the labor intensity of workers is reduced. And the physical output of workers is little, the workers are not prone to fatigue, and the transfer efficiency of the valve seat green body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a valve seat clamp for a heating furnace. Background Art

[0002] Most of the existing hand-held clamps are similar in structure to tool pliers, and basically have two mutually hinged clamp arms. The clamping end is closed by squeezing the hand-held end to clamp the workpiece. The production of valve seats requires a heating furnace to heat and soften the cylindrical valve seat blank, and then a stamping machine is used to stamp and deform the blank to process the shape of the valve seat. When a traditional stamping machine stamps the valve seat blank, the clamp on the stamping machine will clamp and fix the valve seat blank, and then stamp it. However, in the process of transferring the valve seat blank from the heating furnace to the stamping machine, workers are still required to use pliers to clamp the valve seat blank for transfer.

[0003] The clamps in the prior art are commonly composed of two hinged clamp arms, which close the clamping end by squeezing the hand-held end, thereby maintaining the clamping force on the valve seat blank. The valve seat blank is generally a solid steel column or iron column, which is very heavy. When workers clamp the valve seat blank, they must not only maintain the clamping force of the clamp on the valve seat blank, but also need sufficient arm strength to move the valve seat blank. After working for a long time, the workers' physical strength is greatly consumed, making them very easy to become tired, thereby affecting the efficiency of valve seat blank transfer.

[0004] Therefore, it is necessary to propose a valve seat clamp for a heating furnace to reduce the physical exertion of workers in the process of clamping and transferring the valve seat blank and improve the transfer efficiency of the valve seat. Utility Model Content

[0005] The utility model aims to solve the problem that the existing clamps are very easy to become fatigued when clamping the valve seat blank, thereby affecting the transfer efficiency of the valve seat blank. A valve seat clamp for a heating furnace is provided.

[0006] The technical solution of the utility model is:

[0007] A valve seat clamp for a heating furnace comprises two clamp arms and a gripping rod located between the two clamp arms, wherein the gripping rod is arranged at the hand-held ends of the clamp arms, a pin is fixed at the head end of the gripping rod, and the two clamp arms are rotatably connected to the gripping rod through the pin;

[0008] When the clamping ends of the two clamp arms are closed, an arc-shaped gripper is formed. A notch that opens outward is provided at the end of the arc-shaped gripper. The notch can be squeezed to open the arc-shaped gripper. A bottom plate is provided at the bottom of the arc-shaped gripper. The bottom plate is fixedly connected to the head end of the grip rod. Elastic parts are provided on both sides of the grip rod. The elastic part on each side of the grip rod is fixedly connected to the clamp arm on the same side as the elastic part.

[0009] Furthermore, a guide is provided at the notch of the arc-shaped gripper, and the guide can transmit the extrusion force to the clamp arm, so that the clamp arm overcomes the elastic force of the elastic member and rotates relative to the gripping rod, thereby opening the arc-shaped gripper.

[0010] Furthermore, the guide member is a pulley, and the pulley is fixed at the notch of the arc-shaped gripper.

[0011] Furthermore, the notch of the arc-shaped gripper is arc-shaped.

[0012] Furthermore, when the arc-shaped gripper is opened, the clamp arms overcome the pulling force of the elastic member and move away from each other.

[0013] Furthermore, the bottom plate is circular or rectangular.

[0014] Furthermore, a non-slip rubber sleeve is provided at the tail end of the grip rod.

[0015] Furthermore, the anti-slip rubber sleeve is made of high temperature resistant material.

[0016] The utility model relates to a valve seat clamp for a heating furnace, wherein two clamp arms are hinged to each other through a pin shaft, and a worker holds a grip rod and pushes it toward the valve seat blank, and the notch at the end of the arc-shaped gripper contacts the valve seat blank first, and since the notch is opened outward, the arc-shaped gripper can be opened by the valve seat blank after the notch is squeezed, and the valve seat blank thus enters the arc-shaped gripper, and under the elastic force of the elastic member, the arc-shaped gripper closes again to clamp and fix the valve seat blank, and the bottom plate contacts the bottom of the valve seat blank, thereby providing support for the valve seat blank to prevent the valve seat blank from being vertically moved. It falls out along the axis of the arc-shaped gripper. With the support of the bottom plate, the worker holds the gripping rod and places the valve seat blank on the stamping machine. Then he operates the hand-held end of the clamp arm with both hands to open the arc-shaped gripper to separate the valve seat blank from the arc-shaped gripper. Compared with the traditional technology, when clamping the valve seat blank, the technical scheme does not need to manually operate the clamp arm to clamp the valve seat blank. The worker is only responsible for transferring the valve seat blank to the stamping machine by holding the gripping rod after clamping the valve seat blank. This does not consume much physical strength of the workers, and the workers are not easily fatigued, thereby ensuring the transfer efficiency of the valve seat blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the first embodiment of the utility model;

[0018] Figure 2 This is a left side view of the first embodiment of the utility model;

[0019] Figure 3 This is the front view of the second embodiment of the utility model.

[0020] Figure numerals: 1, clamp arm; 2, grip rod; 3, pin shaft; 4, arc-shaped gripper; 5, notch; 6, bottom plate; 7, elastic member; 8, guide member; 9, anti-slip rubber sleeve. DETAILED DESCRIPTION

[0021] In order to make the technical means, technical features, utility model objectives and technical effects achieved by the utility model easy to understand, the utility model is further explained below with reference to specific illustrations.

[0022] Embodiment 1

[0023] like Figure 1 and Figure 2 As shown, this embodiment provides a valve seat clamp for a heating furnace, including two clamp arms 1, and also includes a gripping rod 2 located between the two clamp arms 1, the gripping rod 2 is arranged at the hand-holding end of the clamp arm 1, and a pin shaft 3 is welded to the head end of the gripping rod 2, the two clamp arms 1 are rotatably connected to the gripping rod 2 through the pin shaft 3, and an arc-shaped gripping hand 4 is formed when the clamping ends of the two clamp arms 1 are closed, and an outwardly opened notch 5 is arranged at the end of the arc-shaped gripping hand 4, and the notch 5 can open the arc-shaped gripping hand 4 under the extrusion force, and a bottom plate 6 is arranged at the bottom of the arc-shaped gripping hand 4, and the bottom plate 6 is welded to the head end of the gripping rod 2, and elastic members 7 are arranged on both sides of the gripping rod 2, and the elastic member 7 on each side of the gripping rod 2 is welded to the clamp arm 1 on the same side as the elastic member 7.

[0024] Preferably, a guide member 8 is provided at the notch 5 of the arc-shaped gripper 4 , and the guide member 8 can transmit the extrusion force to the clamp arm 1 , so that the clamp arm 1 overcomes the elastic force of the elastic member 7 and rotates relative to the grip rod 2 , thereby opening the arc-shaped gripper 4 .

[0025] Preferably, the guide member 8 is a pulley, which is fixedly mounted at the notch 5 of the arc-shaped gripper 4. The pulley can reduce the friction between the valve seat blank and the notch 5, making it easier for the valve seat blank to open the arc-shaped gripper 4 and enter therein.

[0026] Preferably, when the arc-shaped gripper 4 is opened, the clamp arms 1 overcome the pulling force of the elastic member 7 and move away from each other, and when the hand-held ends of the clamp arms 1 approach each other, the arc-shaped gripper 4 is also closed, and when the hand-held ends of the two clamp arms 1 move away from each other, the arc-shaped gripper 4 is also opened.

[0027] Preferably, the bottom plate 6 is circular or rectangular.

[0028] Preferably, an anti-skid rubber sleeve 9 is provided at the rear end of the grip 2. The anti-skid rubber sleeve 9 is made of a high temperature resistant material and can increase the friction of the grip to prevent skidding.

[0029] When in use, the worker holds the gripping rod 2 and aligns the end of the arc-shaped gripper 4 with the valve seat blank. Since the valve seat blank is cylindrical, when the valve seat blank enters the notch 5 of the arc-shaped gripper 4, the arc-shaped gripper 4 is stretched open, and the valve seat blank enters the arc-shaped gripper 4. Under the pulling force of the elastic member 7, the two clamp arms 1 are pulled back close to each other, and the arc-shaped gripper 4 is closed again. The valve seat blank is fixed in the arc-shaped gripper 4. The worker holds the gripping rod 2 with both hands to lift the valve seat blank and at the same time, the valve seat The blank is placed vertically. Since the bottom plate 6 provides support at the bottom of the valve seat blank, the valve seat blank will not slip out of the arc-shaped gripper 4. Then the hand-held clamp is moved to place the base and the valve seat blank on the base on the stamping machine. At this time, the valve seat blank is also placed vertically. The worker gently pulls the handheld end of the clamp arm 1 with both hands, the arc-shaped gripper 4 opens, and the clamp body is pulled out, so that the valve seat blank can be placed on the stamping machine, completing the transfer of the valve seat blank from the heating furnace to the stamping machine.

[0030] Embodiment 2

[0031] The similarities between this embodiment and the first embodiment are not repeated here, and the differences are as follows:

[0032] like Figure 3 As shown, the notch 5 of the arc-shaped gripper 4 is arc-shaped. When in use, when subjected to the squeezing force of the valve seat blank, the notch 5 can transmit the force to the clamp arm 1, and the clamp arm 1 overcomes the elasticity of the elastic member 7 and rotates relative to the grip rod 2, thereby causing the arc-shaped gripper 4 to be stretched open, and the valve seat blank enters into the arc-shaped gripper 4, completing the clamping of the valve seat blank by the device.

[0033] When clamping the valve seat blank, the technical solution does not need to manually operate the clamp arm 1 to clamp the valve seat blank. The worker only needs to hold the handle 2 to transfer the valve seat blank to the punching machine after clamping the valve seat blank. This does not consume much physical strength of the workers, and the workers are not easily fatigued, thereby ensuring the transfer efficiency of the valve seat blank.

[0034] The above description is only a preferred embodiment of the utility model, and is not intended to limit the scope of implementation of the utility model. That is, all equivalent changes and modifications made according to the content of the patent application scope of the utility model should belong to the technical scope of the utility model.

Claims

1. A valve seat clamp for a heating furnace, comprising two clamp arms (1), characterized in that: It also includes a gripping rod (2) located between the two clamp arms (1), the gripping rod (2) being arranged at the hand-held end of the clamp arm (1), a pin shaft (3) being fixed to the head end of the gripping rod (2), and the two clamp arms (1) being rotatably connected to the gripping rod (2) via the pin shaft (3); When the clamping ends of the two clamp arms (1) are closed, an arc-shaped gripper (4) is formed. A notch (5) opening outward is provided at the end of the arc-shaped gripper (4). The notch (5) is pressed to open the arc-shaped gripper (4). A bottom plate (6) is provided at the bottom of the arc-shaped gripper (4). The bottom plate (6) is fixedly connected to the head end of the gripping rod (2). Elastic members (7) are provided on both sides of the gripping rod (2). The elastic member (7) on each side of the gripping rod (2) is fixedly connected to the clamp arm (1) on the same side as the elastic member (7).

2. The valve seat clamp for a heating furnace according to claim 1, characterized in that: A guide member (8) is provided at the notch (5) of the arc-shaped gripper (4), and the guide member (8) can transmit the extrusion force received to the clamp arm (1), so that the clamp arm (1) overcomes the elastic force of the elastic member (7) and rotates relative to the gripping rod (2), thereby opening the arc-shaped gripper (4).

3. The valve seat clamp for a heating furnace according to claim 2, characterized in that: The guide member (8) is a pulley, and the pulley is fixed at the notch (5) of the arc-shaped gripper (4).

4. The valve seat clamp for a heating furnace according to claim 1, characterized in that: The notch (5) of the arc-shaped gripper (4) is arc-shaped.

5. The valve seat clamp for a heating furnace according to claim 3 or 4, characterized in that: When the arc-shaped gripper (4) is opened, the clamp arms (1) overcome the pulling force of the elastic member (7) and move away from each other.

6. The valve seat clamp for a heating furnace according to claim 5, characterized in that: The bottom plate (6) is circular or rectangular.

7. The valve seat clamp for a heating furnace according to claim 6, characterized in that: The rear end of the grip rod (2) is provided with an anti-slip rubber sleeve (9).

8. The valve seat clamp for a heating furnace according to claim 7, characterized in that: The anti-slip rubber sleeve (9) is made of high temperature resistant material.

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