Punching pliers

Abstract

The utility model discloses a pair of punching pliers to solve the technical problems that existing punching pliers are inconvenient to manufacture and small in magnification times. The clamp comprises a clamp body, a handle, a punching needle and a power component, a clamp mouth is arranged on one side of the clamp body, the punching needle is arranged in the clamp mouth, the power component comprises a rotating rod, a swing rod and a push rod, the top end of the rotating rod is rotationally connected to the upper portion of the side, away from the punching needle, of the clamp body, and the lower end of the swing rod is rotationally connected to the lower portion of the side, located on the punching needle, of the clamp body. The swing rod is obliquely arranged upwards and abuts against the inner side of the upper portion of the rotating rod, the push rod is located on the lateral upper portion of the swing rod and rotationally connected to the middle of the clamp body, the lower end of the push rod abuts against the swing rod, and the upper end of the push rod abuts against the punching needle. The distance between the connection point of the push rod and the clamp body and the contact point of the push rod and the swing rod is larger than the distance between the connection point of the push rod and the clamp body and the contact point of the push rod and the punching needle. The three-stage lever has the beneficial effects that the three-stage lever is designed, so that more labor is saved, and the whole is more convenient to manufacture and assemble.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hardware tools, in particular to a punch pliers. BACKGROUND

[0002] The punch pliers are used for punching on the plate, including the pliers body, the handle, the punch needle, the power component, the punch needle is arranged in the pliers body, the handle and the pliers body are fixedly connected, the power component and the pliers body are connected to push the punch needle to move up and down to punch. The Chinese patent document with the authorized announcement number CN221892118U discloses a punch pliers, the pressure strip is turned up by the pressure of the rotating rod, at this time, the resistance arm on the pressure strip can push the punch needle to move up to realize the punching. However, the applicant found that the punch pliers still have the following problems in practice: (1) the pressure strip is of special-shaped structure, which is inconvenient to manufacture; (2) the amplification multiple of the moment of force is small at the initial position of the punch pliers, which gradually increases in the process of punching. SUMMARY

[0003] The present application provides a punch pliers to solve the technical problems of the existing punch pliers, such as inconvenient manufacturing and small amplification multiple.

[0004] To solve the above technical problems, the present application adopts the following technical scheme:

[0005] A punch pliers is designed, which includes the pliers body, the handle, the punch needle, the power component, the pliers body is provided with the pliers mouth on one side, the punch needle is arranged in the pliers mouth, the handle is located below the pliers body, the power component and the pliers body are connected to push the punch needle to act, the power component includes the rotating rod, the swing lever and the push rod, the top end of the rotating rod is rotationally connected to the upper part of the pliers body away from the punch needle side, the lower end of the swing lever is rotationally connected to the lower part of the pliers body located on the punch needle side, the swing lever is obliquely upwardly arranged and abuts against the inner side of the upper part of the rotating rod, the push rod is located above the side of the swing lever and rotationally connected to the middle part of the pliers body, the lower end of the push rod abuts against the swing lever, the upper end of the push rod abuts against the punch needle, the distance between the connection point of the push rod and the pliers body and the contact point of the push rod and the swing lever is greater than the distance between the connection point of the push rod and the pliers body and the contact point of the push rod and the punch needle.

[0006] Further, the swing lever is of smooth circular arc structure, the outer arc surface of the swing lever faces the rotating rod side, or the swing lever is of arc structure, the inner surface of the swing lever is provided with the groove, the end of the push rod is clamped in the groove.

[0007] Further, the push rod includes the folded part, the folded part is rotationally connected with the pliers body, the outer surface of the folded part faces the swing lever side, the angle of the folded part of the push rod is between 70° and 140°.

[0008] Further, the two ends of the push rod and the end of the swing lever and the rotating rod abutting against each other are all provided with the roller.

[0009] Furthermore, a clamping groove is provided at one end of the push rod and the punch, and a roller is provided in the clamping groove. The roller abuts against the punch, and the width of the punch matches the width of the clamping groove so that the punch can fall out of the clamping groove after the roller is removed.

[0010] Furthermore, a groove is provided on the inner side of the rotating rod, and the roller at the end of the swing arm is disposed in the groove, the width of the groove matching the thickness of the roller at the end of the swing arm.

[0011] Furthermore, the clamp body includes a jaw and a clamp groove. The jaw is located at the top of the clamp body, and the clamp groove includes a left groove plate and a right groove plate. The rotating rod, the swing rod, and the push rod are all rotatably connected in the clamp groove, and a limit post is provided in the clamp groove above the rotating rod.

[0012] Furthermore, the punch includes a base and a body, and a return spring is provided on the punch. One end of the return spring abuts against the punch base, and the other end abuts against the bottom of the jaws.

[0013] Furthermore, the bottom of the punch is connected to an inverted U-shaped connector, which is rotatably connected to the end of the push rod. The swing rod is provided with a first slot, and the rotating rod is provided with a second slot. One end of the push rod is slidably engaged with the first slot, and the second slot at one end of the swing rod is slidably engaged.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0015] 1. This invention designs a three-stage lever system: the rotating rod is the first stage, the swing rod is the second stage, and the push rod is the third stage. Each stage of the lever amplifies the torque, thereby achieving the purpose of saving effort.

[0016] 2. The rocker arm of this invention is designed in an arc shape, and the push rod is designed in a bent shape, which makes them easier to manufacture. Moreover, the push rod moves more smoothly on the arc-shaped track.

[0017] 3. The present invention designs the bending angle of the push rod to be between 70° and 140°, which makes it easier to operate. The folded push rod structure allows the push rod to exert a vertical upward force on the punch, which increases the torque amplification factor while enhancing stability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of embodiment 1 of the punching pliers of the present invention.

[0019] Figure 2 This is a front view schematic diagram of embodiment 1 of the hole punching pliers of the present invention.

[0020] Figure 3 This is a schematic diagram of the internal structure of Embodiment 1 of the punching pliers of the present invention.

[0021] Figure 4 This is a schematic diagram of the force analysis of Embodiment 1 of the punching pliers of the present invention.

[0022] Figure 5 This is a schematic diagram of the punch structure of Embodiment 2 of the punching pliers of the present invention.

[0023] Figure 6 This is a schematic diagram of the push rod structure of Embodiment 2 of the punching pliers of the present invention.

[0024] Figure 7 This is a schematic diagram of the needle structure of Embodiment 3 of the punching pliers of the present invention.

[0025] Figure 8 This is a schematic diagram of the power component connection in Embodiment 3 of the punching pliers of the present invention.

[0026] Figure 9 This is a schematic diagram of the rocker arm structure of Embodiment 4 of the punching pliers of the present invention.

[0027] In the figure, the clamp body is 1, the handle is 2, the punch is 3, the return spring is 31, the needle cap is 32, the base is 33, the needle body is 34, the clamp mouth is 11, the clamp groove is 12, the left groove plate is 121, the right groove plate is 122, the rotating rod is 4, the limiting post is 41, the sliding groove is 42, the swing rod is 5, the push rod is 6, the clamping groove is 61, the inverted U-shaped connector is 7, the slot is 8, and the groove is 9. Detailed Implementation

[0028] The specific embodiments of the present invention will be described below with reference to the accompanying drawings and examples. However, the following examples are only used to illustrate the present invention in detail and do not limit the scope of the present invention in any way.

[0029] Example 1: A hole punch pliers, see Figure 1 and Figure 2 The clamp body 1 includes a handle 2, a punch 3, and a power unit. The clamp body 1 includes a jaw 11 and a jaw groove 12. The jaw 11 is located at the top of the clamp body 1. The jaw groove 12 includes a left groove plate 121 and a right groove plate 122. The left groove plate 121 and the right groove plate 122 are integrally formed with the jaw 11 and are located on both sides of the jaw 11. The two groove plates are arranged in parallel, and the gap between them forms the jaw groove 12.

[0030] The jaws of the jaws 11 have a through hole in the lower jaw, and a punch 3 is disposed in the through hole. A needle cap 32 is disposed in the upper jaw of the jaws 11. The handle 2 is fixed to the bottom of the jaw groove 12. A power unit is connected to the jaw body 1 to push the punch 3 up and down. A return spring 31 is disposed on the punch 3, with one end abutting against the bottom of the punch 3 and the other end abutting against the bottom of the jaws 11. The power unit includes a rotating rod 4, a swing rod 5, and a push rod 6 rotatably connected in the jaw groove 12. (See [reference]) Figure 3The top of the rotating rod 4 is rotatably connected to the top of the clamp 12, one end of the swing rod 5 is rotatably connected to the clamp 12, and the other end abuts against the rotating rod 4. The middle part of the push rod 6 is rotatably connected to the clamp 12, one end of the push rod 6 abuts against the upper surface of the swing rod 5, and the other end abuts against the bottom of the punch 3.

[0031] Handle 2 is vertically positioned, while rotating rod 4 is angled downwards. In a stationary state, the top of handle 2 abuts against the bottom surface of swing rod 5. Swing rod 5 is arc-shaped, with its outer arc facing the rotating rod 4. The arc shape of the swing rod makes the movement of the push rod smoother and less strenuous. Push rod 6 has a folded structure, with its bend connected to the clamp groove 12. The outer surface of the bend faces the swing rod 5. The bend angle of push rod 6 is between 70° and 140° for easier operation. If the angle is too large, the side of the push rod that abuts against the punch will be too upturned, resulting in a shorter punch stroke, which is not conducive to torque amplification. If the angle is too small, the punch stroke will be too large, requiring a larger opening distance between the rotating rod and the handle, which is not conducive to hand grip operation.

[0032] As a further improvement, rollers are provided at both ends of the push rod 6 and at the end where the swing rod 5 and the rotating rod 4 abut. A transverse limiting post 41 is provided at the upper part of the clamp groove 12 above the rotating rod 4. A sliding groove 42 is provided on the inner side of the rotating rod 4, and the roller at the end of the swing rod 5 is disposed in the sliding groove 42. The width of the sliding groove 42 and the thickness of the roller at the end of the swing rod 5 match to help ensure the stability of the operation.

[0033] For the force analysis of the above-mentioned hole punchers during use, please refer to [link / reference]. Figure 4 The rotating rod 4 is subjected to a downward gripping force F1 and rotates downward. Its horizontal component F2 acts on the swing rod 5, causing the swing rod 5 to exert an upward pushing force F3 on the push rod 6. The pushing force F3 and the perpendicular component of the push rod 6 drive the push rod 6 to rotate clockwise. At this time, the upper end of the push rod 6 applies an upward pushing force to the punch. The rotating rod 4 acts as the first-stage lever, the swing rod 5 as the second-stage lever, and the push rod 6 as the third-stage lever. During operation, the effort arm is greater than the resistance arm, which can achieve a three-stage torque amplification, making it more labor-saving. The arc design of the swing rod 5 increases the angle between the swing rod 5 and the push rod 6, thus increasing the component force F4. The pivot position of the push rod 6 remains unchanged, and the bending angle is designed to be between 70° and 140° for the most convenient operation. Using a folded push rod structure allows the push rod to exert a vertical upward pushing force on the punch, increasing the torque amplification factor while enhancing stability.

[0034] Example 2: The difference from Example 1 lies in the structure of the punch. For details, please refer to... Figure 5 and Figure 6The punch includes a base 33 and a needle body 34. The end of the push rod 6 that abuts against the punch 3 is provided with a clamping groove 61. A roller is provided in the clamping groove 61. The roller abuts against the punch. A part of the base of the punch 3 is cut off so that the width matches the width of the clamping groove. After the roller is removed, the punch can fall out of the gap in the clamping groove 61, making it convenient to replace the punch.

[0035] Example 3: The difference from Example 1 is that the bottom of the punch is connected to an inverted U-shaped connector 7, see [link / reference]. Figure 7 The inverted U-shaped connector 7 and the end of the push rod 6 are rotatably connected (the roller is removed here). The swing rod 5 is provided with a first slot, and the rotating rod 4 is provided with a second slot. One end of the push rod 6 is slidably engaged with the first slot, and one end of the swing rod 5 is slidably engaged with the second slot. The above-mentioned slidable engagement structure is described in [reference needed]. Figure 8 The swing rod 5 and the rotating rod 4 are groove-shaped structures with slots 8 on both sides. The roller's shaft is set in the slot. The direct contact relationship between the rotating rod 4, the swing rod 5, and the push rod 6 is changed to a traction connection. At this time, pulling the rotating rod 4 outward can drive the punch to reset, preventing the punch from getting stuck in the material and the spring force from being insufficient, which would cause the punch to fail to automatically withdraw.

[0036] Example 4: The difference from Example 1 is that the swing rod 5 has an arc-shaped structure, and a groove 9 is provided on the inner surface of the swing rod 5. The end of the push rod 6 abuts in the groove 9.

[0037] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. However, those skilled in the art will understand that, without departing from the spirit of the present invention, various specific parameters in the above embodiments can be changed to form multiple specific embodiments, all of which are common variations of the present invention, and will not be described in detail here.

Claims

1. A hole punching pliers, comprising a pliers body, a handle, a punch, and a power unit, wherein a jaw is provided on one side of the pliers body, the punch is disposed in the jaw, the handle is located below the pliers body, and the power unit is connected to the pliers body to drive the punch, characterized in that, The power component includes a rotating rod, a swing rod, and a push rod. The top end of the rotating rod is rotatably connected to the upper part of the clamp body away from the punch. The lower end of the swing rod is rotatably connected to the lower part of the clamp body on the punch side. The swing rod is inclined upward and abuts against the inner side of the upper part of the rotating rod. The push rod is located above the side of the swing rod and rotatably connected to the middle of the clamp body. The lower end of the push rod abuts against the swing rod, and the upper end of the push rod abuts against the punch. The distance between the connection point of the push rod and the clamp body and the contact point of the push rod and the swing rod is greater than the distance between the connection point of the push rod and the clamp body and the contact point of the push rod and the punch.

2. The hole punching pliers according to claim 1, characterized in that, The swing arm has a smooth, arc-shaped structure, with the outer arc surface of the swing arm facing the rotating rod side.

3. The hole punching pliers according to claim 1, characterized in that, The swing arm has an arc-shaped structure, and a groove is provided on the inner surface of the swing arm. The end of the push rod is disposed in the groove.

4. The hole punching pliers according to claim 1, characterized in that, The push rod includes a folded section, which is rotatably connected to the clamp body. The outer surface of the folded section faces the swing arm, and the angle of the folded section of the push rod is between 70° and 140°.

5. The hole punching pliers according to claim 1, characterized in that, Rollers are provided at both ends of the push rod and at the end where the swing rod and rotating rod abut.

6. The hole punching pliers according to claim 5, characterized in that, The push rod and the punch abut at one end, which is provided with a clamping groove. The roller is provided in the clamping groove, and the roller abuts against the punch. The width of the punch matches the width of the clamping groove so that the punch can fall out of the clamping groove after the roller is removed.

7. The hole punching pliers according to claim 5, characterized in that, The inner side of the rotating rod is provided with a sliding groove, and the roller at the end of the swing arm is disposed in the sliding groove. The width of the sliding groove matches the thickness of the roller at the end of the swing arm.

8. The hole punching pliers according to claim 1, characterized in that, The clamp body also includes a clamp groove, and the clamp jaws are located at the top of one side of the clamp body. The clamp groove includes a left groove plate and a right groove plate. The rotating rod, the swing rod, and the push rod are all rotatably connected in the clamp groove. A transverse limiting post is provided in the clamp groove above the rotating rod.

9. The hole punching pliers according to claim 1, characterized in that, The punch includes a base and a body. A return spring is provided on the punch, with one end of the return spring abutting against the punch base and the other end abutting against the bottom of the jaws.

10. The hole punching pliers according to claim 1, characterized in that, The bottom of the punch is connected to an inverted U-shaped connector, which is rotatably connected to the end of the push rod. The swing rod is provided with a first slot, and the rotating rod is provided with a second slot. One end of the push rod is slidably engaged with the first slot, and the second slot at one end of the swing rod is slidably engaged with it.

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