Flywheel balancing structure for toggle press

Abstract

A dynamic balancing structure for a toggle-type punch press includes a toggle mechanism and a dynamic balancing mechanism. The toggle mechanism includes a crankshaft, a bushing rod, a toggle connecting rod, a toggle lever, and a slider. The input end of the bushing rod is rotatably mounted on the crankshaft. The output end of the bushing rod and the input end of the toggle connecting rod are pivotally connected to the input end of the toggle connecting rod. The output end of the toggle connecting rod is pivotally connected to the slider. The dynamic balancing mechanism includes a reverse connecting rod, a balance lever, a balance connecting rod, and a balance block. The output end of the toggle lever is pivotally connected to the input end of the reverse connecting rod, the output end of the reverse connecting rod is pivotally connected to the input end of the balance lever, the output end of the balance lever is pivotally connected to the input end of the balance connecting rod, and the output end of the balance connecting rod is pivotally connected to the balance block. Because the above dynamic balancing structure drives the dynamic balancing mechanism through the toggle lever, achieving a unidirectional drive effect, it eliminates the need for a mirror-image bias structure on the crankshaft, avoiding crankshaft structural complexity, reducing the crankshaft load, and lowering overall costs.

Description

Technical Field

[0001] This invention relates to a dynamic balancing structure for punch presses, and more particularly to a dynamic balancing structure for a toggle-type punch press. Background Technology

[0002] In recent years, the development of punch presses has been rapid. As the application of these products becomes increasingly widespread, the requirements for punch press speed and precision are also increasing. However, the higher the speed, the more pronounced the issues of temperature and vibration become. Among these, dynamic balancing structures are now incorporated into many punch presses to mitigate the adverse effects of vibration, which is the most crucial aspect of addressing the problem.

[0003] Most existing dynamic balancing structures use a bidirectional drive method to achieve dynamic balancing. That is, the crankshaft provides driving force to the stamping slider in one direction and driving force to the balance block in the opposite direction, so that the slider and the balance block move in opposite directions, thereby achieving dynamic balance.

[0004] However, bidirectional drive means that two opposing eccentric wheels need to be set on the crankshaft, which makes the crankshaft structure more complex and more expensive. Especially for high-speed punch presses, the above setup greatly increases the burden on the crankshaft. Summary of the Invention

[0005] The present invention addresses the above-mentioned situation and provides a dynamic balancing structure for a toggle-type punch press to solve the above problems. The dynamic balancing structure includes a toggle mechanism and a dynamic balancing mechanism. The toggle mechanism includes a crankshaft, a bushing rod, a toggle connecting rod, a toggle lever, and a slider that can move linearly. The input end of the bushing rod is rotatably mounted on the crankshaft. The output end of the bushing rod, the input end of the toggle connecting rod, and the input end of the toggle lever are pivotally connected. The output end of the toggle connecting rod is pivotally connected to the slider. The dynamic balancing mechanism includes a reverse connecting rod, a balance lever, a balance connecting rod, and a balance block that can move linearly. The output end of the toggle lever is pivotally connected to the input end of the reverse connecting rod. The output end of the reverse connecting rod is pivotally connected to the input end of the balance lever. The output end of the balance lever is pivotally connected to the input end of the balance connecting rod. The output end of the balance connecting rod is pivotally connected to the balance block.

[0006] Furthermore, the fulcrum of both the elbow lever and the fulcrum of the balance lever are fixed.

[0007] Furthermore, the crankshaft has a shaft and an eccentric wheel, the eccentric wheel being eccentrically positioned relative to the shaft, and the input end of the bushing rod being rotatably positioned on the eccentric wheel.

[0008] Furthermore, there are two of each of the eccentric wheel, toggle link, toggle lever, and dynamic balancing mechanism.

[0009] Furthermore, at least a portion of the reverse linkage, the balance lever, and at least a portion of the balance linkage are all located inside the balance block.

[0010] Furthermore, the slider has a main body, a guide post, and a support block, which are sequentially fixed together, and the output end of the toggle link is pivotally connected to the support block.

[0011] After adopting the above technical solution, the beneficial effects of the present invention are as follows: Since the above dynamic balancing structure drives the dynamic balancing mechanism through the toggle lever to achieve the effect of unidirectional drive, it is not necessary to set a mirror bias structure on the crankshaft, thereby avoiding the complexity of the crankshaft structure, reducing the burden on the crankshaft, and reducing the overall cost. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the dynamic balancing structure involved in the present invention; Figure 2 This is a partial view of the toggle mechanism and dynamic balancing mechanism involved in the present invention; Figure 3 This is a schematic diagram of the dynamic balancing structure of the slider in a limit position, which is involved in the present invention. Figure 4 This is a schematic diagram of the dynamic balancing structure of the slider in another extreme position, which is involved in the present invention. Detailed Implementation

[0013] The technical solution of the present invention will be further described below through embodiments: This invention provides a dynamic balancing structure for a toggle-type punch press, combined with... Figures 1-2 As shown, the dynamic balancing structure includes a toggle mechanism 1 and a dynamic balancing mechanism 2. The toggle mechanism 1 includes a crankshaft 11, a bushing rod 12, a toggle connecting rod 13, a toggle lever 14, and a slider 15 that can move linearly. The input end of the bushing rod 12 is rotatably mounted on the crankshaft 11. The output end of the bushing rod 12, the input end of the toggle connecting rod 13, and the input end of the toggle lever 14 are pivotally connected. The output end of the toggle connecting rod 13 is pivotally connected to the slider 15. The dynamic balancing mechanism 2 includes a reverse connecting rod 21, a balancing lever 22, a balancing connecting rod 23, and a balance block 24 that can move linearly. The output end of the toggle lever 14 is pivotally connected to the input end of the reverse connecting rod 21. The output end of the reverse connecting rod 21 is pivotally connected to the input end of the balancing lever 22. The output end of the balancing lever 22 is pivotally connected to the input end of the balancing connecting rod 23. The output end of the balancing connecting rod 23 is pivotally connected to the balance block 24.

[0014] like Figures 3-4As shown, when the above dynamic balancing structure is working, the crankshaft 11 drives the toggle link 13 to move through the bushing rod 12, thereby causing the slider 15 to move linearly to perform the stamping operation. The input end of the toggle lever 14 swings accordingly and limits the stroke of the slider 15. At the same time, the output end of the toggle lever 14 drives the balance block 24 to move linearly through the reverse link 21, the balance lever 22 and the balance link 23 in sequence. The direction of movement of the balance block 24 is always opposite to that of the slider 15, thereby achieving the dynamic balancing effect.

[0015] In this invention, since the dynamic balancing structure drives the dynamic balancing mechanism 2 through the toggle lever 14 to achieve a unidirectional driving effect, it is not necessary to set a mirror bias structure on the crankshaft 11, thus avoiding the complexity of the crankshaft 11 structure, reducing the burden on the crankshaft 11, and lowering the overall cost.

[0016] In this invention, in addition to the dynamic balance between the slider 15 and the balance block 24, the toggle link 13 and the balance link 23 also achieve dynamic balance (i.e., their movements are opposite), thereby achieving dynamic balance in the four directions of up, down, left, and right.

[0017] In this embodiment, both the balance block 24 and the slider 15 can move linearly in the vertical direction.

[0018] In this embodiment, the fulcrum of both the elbow lever 14 and the fulcrum of the balance lever 22 are fixed. Fixed fulcrums mean that the fulcrums cannot move, but the levers themselves can rotate around the fulcrum.

[0019] Specifically, the crankshaft 11 has a shaft 111 and an eccentric wheel 112. The eccentric wheel 112 is eccentrically positioned relative to the shaft 111, and the input end of the bushing rod 12 is rotatably mounted on the eccentric wheel 112. Rotating the crankshaft 11 drives the eccentric wheel 112 to move around the crankshaft 11, thereby causing the bushing rod 12 to move.

[0020] More specifically, there are two eccentric wheels 112, toggle links 13, toggle levers 14, and dynamic balancing mechanisms 2. The presence of two dynamic balancing mechanisms 2 reduces the weight required for a single balance block 24 and disperses the force transmission points of the crankshaft 1 (i.e., avoids concentration in one location), making the force transmission more stable.

[0021] Specifically, at least a portion of the reverse linkage 21, the balance lever 22, and at least a portion of the balance linkage 23 are located inside the balance block 24. This placement of these portions inside the balance block 24 saves space and facilitates the miniaturization of the punch press.

[0022] Specifically, the slider 15 has a main body 151, guide posts 152, and support block 153. The main body 151, guide posts 152, and support block 153 are sequentially fixed together, and the output end of the toggle link 13 is pivotally connected to the support block 153. The main body 151 is used for stamping operations; the guide posts 152 cooperate with the guide sleeve of the punch press to guide the movement of the slider 15. In this embodiment, there are four guide posts 152.

Claims

1. A dynamic balancing structure for a toggle-type punch press, the dynamic balancing structure comprising: A toggle mechanism and a dynamic balancing mechanism are disclosed. The toggle mechanism includes a crankshaft, a bushing rod, a toggle connecting rod, a toggle lever, and a slider movable in a straight line. The input end of the bushing rod is rotatably mounted on the crankshaft. The output end of the bushing rod, the input end of the toggle connecting rod, and the input end of the toggle lever are pivotally connected. The output end of the toggle connecting rod is pivotally connected to the slider. The dynamic balancing mechanism includes a reverse connecting rod, a balancing lever, a balancing connecting rod, and a balance block movable in a straight line. The output end of the toggle lever is pivotally connected to the input end of the reverse connecting rod, the output end of the reverse connecting rod is pivotally connected to the input end of the balancing lever, the output end of the balancing lever is pivotally connected to the input end of the balancing connecting rod, and the output end of the balancing connecting rod is pivotally connected to the balance block. The fulcrum of the toggle lever and the fulcrum of the balancing lever are both fixed.

2. The dynamic balancing structure of the toggle-type punch press according to claim 1, characterized in that: The crankshaft has a shaft and an eccentric wheel, the eccentric wheel being eccentrically positioned relative to the shaft, and the input end of the bushing rod being rotatably mounted on the eccentric wheel.

3. The dynamic balancing structure of the toggle-type punch press according to claim 2, characterized in that: There are two of each of the eccentric wheel, toggle link, toggle lever, and dynamic balancing mechanism.

4. The dynamic balancing structure of the toggle-type punch press according to claim 1, characterized in that: At least a portion of the reverse link, the balance lever, and at least a portion of the balance link are located inside the balance block.

5. The dynamic balancing structure of the toggle-type punch press according to claim 1, characterized in that: The slider has a main body, a guide post, and a support block, which are sequentially fixed together. The output end of the toggle link is pivotally connected to the support block.

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