Forging press based on multi-connecting-rod mechanism

Abstract

The utility model discloses a forging press based on a multi-connecting rod mechanism, which at least comprises a main body, the bottom of the main body is contacted with the ground, the upper part of the main body is fixedly provided with a second connecting rod support, and the second connecting rod support is provided with a second support connecting part; one end of the oil cylinder assembly is movably connected with an oil cylinder connecting part of the first connecting rod through a through hole in the main body; when the oil cylinder drives the first connecting rod to rotate anticlockwise around the second connecting rod support, the second connecting rod moves downwards clockwise and pushes the first connecting rod support to move downwards; when the oil cylinder contracts, the first connecting rod rotates clockwise, and the second connecting rod moves upwards anticlockwise and drives the first connecting rod support to reset along the guide groove. The utility model has the advantages of simple structure, uniform torque distribution and lower energy consumption.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing equipment technical field especially, it relates to a kind of forging press based on multi-connecting rod mechanism. BACKGROUND

[0002] Traditional forging press is driven by single hydraulic cylinder straight push or crank slider mechanism, which has the disadvantages of large cylinder volume, complex structure, large installed power and energy consumption.

[0003] Therefore, the technical personnel in the art need to study a kind of forging press with large forging pressure, short working stroke requirement in high-pressure section, simple structure and low energy consumption. UTILITY MODEL CONTENT

[0004] The utility model aims at the disadvantages of large cylinder volume, complex structure, large installed power and energy consumption of traditional forging press in the background art, and provides a kind of forging press based on multi-connecting rod mechanism.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A kind of forging press based on multi-connecting rod mechanism, at least includes:

[0007] Main body, the bottom of the main body is in contact with ground, the upper part of the main body is fixedly provided with second connecting rod support, second connecting rod support is provided with second support connecting portion;The lower part of the second connecting rod support on the main body is provided with horizontal direction through hole;The lower part of the through hole is provided with vertical direction guide slot, first connecting rod support is arranged in the guide slot, first connecting rod support is provided with first support connecting portion, and the first connecting rod support can slide up and down along the guide slot;

[0008] First connecting rod, one end of the first connecting rod is provided with first connecting rod upper connecting portion, the first connecting rod upper connecting portion is connected with the second connecting rod support connecting portion and can rotate relative to the second connecting rod support, the other end of the first connecting rod is provided with first connecting rod lower connecting portion and first connecting rod oil cylinder connecting portion;

[0009] Second connecting rod, one end of the second connecting rod is provided with second connecting rod upper connecting portion, the other end of the second connecting rod is provided with second connecting rod lower connecting portion, the first connecting rod lower connecting portion is connected with the second connecting rod upper connecting portion and can rotate relative to the second connecting rod upper connecting portion, and the lower connecting portion of the second connecting rod is connected with the first connecting rod support and can rotate relative to the first connecting rod support;

[0010] The oil cylinder assembly comprises an oil cylinder base, an oil cylinder, an oil cylinder main shaft and an oil cylinder slave shaft, one end of the oil cylinder is provided with a main shaft connecting part, the other end of the oil cylinder is provided with a slave shaft connecting part, the oil cylinder main shaft connecting part is connected with the oil cylinder base, and the oil cylinder slave shaft connecting part is connected with the first connecting rod oil cylinder connecting part through a through hole on the main body and can rotate relatively.

[0011] When the oil cylinder drives the first connecting rod to rotate counterclockwise around the second connecting rod support, the second connecting rod rotates clockwise and moves downward and pushes the first connecting rod support to move downward; when the oil cylinder is retracted, the first connecting rod rotates clockwise, and the second connecting rod rotates counterclockwise and moves upward and drives the first connecting rod support to move upward along the guide groove.

[0012] In one embodiment, a base for placing a workpiece to be processed is further included, the base is fixedly arranged at the lower part of the guide groove, and the bottom of the base is arranged on the ground.

[0013] In one embodiment, the first connecting rod is a five-ear connecting rod, the first connecting rod support is a five-ear connecting rod support, and the upper connecting part of the five-ear connecting rod is rotatably connected with the second connecting rod support through a rotating shaft.

[0014] In one embodiment, the five-ear connecting rod is an integrated structure composed of five ear-shaped structures with the same structure.

[0015] In one embodiment, the second connecting rod is a four-ear connecting rod, the second connecting rod support is a four-ear connecting rod support, the lower connecting part of the four-ear connecting rod is rotatably connected with the five-ear connecting rod support through a rotating shaft, and the upper connecting part of the four-ear connecting rod is rotatably connected with the lower connecting part of the five-ear connecting rod through a rotating shaft.

[0016] In one embodiment, the four-ear connecting rod is an integrated structure composed of four ear-shaped structures with the same structure.

[0017] In one embodiment, the guide groove is composed of two guide plates fixedly arranged on the main body.

[0018] In one embodiment, the lower connecting part of the second connecting rod is rotatably connected with the first connecting rod support through a guide shaft.

[0019] In one embodiment, a clamping groove is arranged on the rotating shaft, and an elastic retaining ring is arranged in the clamping groove.

[0020] Compared with the prior art, the above technical scheme of the utility model has the following beneficial technical effects:

[0021] The above structural design of the utility model replaces the existing single hydraulic drive or crank slider mechanism with the structure of the combination of the oil cylinder and the connecting rod, simplifies the structure and improves the stability of the forging process equipment.

[0022] The multi-ear design of the connecting rod meets the strength requirement of the forging press through the conventional plate thickness superposition, solves the problem that the plate thickness is too thick and the market cannot meet the demand, and the multi-ear structure is more uniform in stress and good in stability, and will not tilt when external force is applied, so that the structure is simple and good in stability, the defective product rate is reduced, and the economic benefit is improved.

[0023] The application of the lever principle in the design can effectively reduce the volume of the oil cylinder, reduce the installed power and energy loss, and improve the economic benefit.

[0024] The five-ear support and the guide groove are slidably matched, the accuracy of the forging direction is ensured, and the workpiece deviation can be effectively prevented.

[0025] The elastic check ring on the rotating shaft simplifies the axial fixing mode of the rotating shaft and reduces the assembly difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a whole structure schematic view of one direction of an embodiment of the utility model.

[0027] Figure 2 is a whole structure schematic view of another direction of an embodiment of the utility model.

[0028] Figure 3 is an exploded structure schematic view of an embodiment of the utility model.

[0029] Figure 4 is a moment balance stress schematic view of an embodiment of the utility model.

[0030] Figure 5 is a structure schematic view of a guide sliding groove of an embodiment of the utility model.

[0031] Figure 6 is a four-ear structure schematic view of an embodiment of the utility model.

[0032] Figure 7 is a five-ear structure schematic view of an embodiment of the utility model. DETAILED DESCRIPTION

[0033] In the description of the utility model, it is understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0034] The embodiments of the present application will be further described below with reference to the drawings. Those skilled in the art should understand that the embodiments described in the present application are only exemplary embodiments. Hereinafter, the embodiments of the present application will be described with reference to the drawings.

[0035] As shown in Figures 1 to 7 The utility model provides a kind of forging press based on multi-connecting rod mechanism, including main body 1, the bottom of main body 1 is in contact with ground, the upper portion of main body 1 is fixedly provided with second connecting rod support, second connecting rod support is provided with second support connecting portion 201, as the rotation fulcrum of upper connecting rod.The lower portion of second connecting rod support on main body 1 is provided with horizontal direction through-hole.The lower portion of through-hole on main body 1 is provided with vertical direction guide slot, first connecting rod support is arranged in guide slot, first connecting rod support is provided with first support connecting portion 501, first connecting rod support can slide up and down along guide slot.

[0036] As shown in Figures 1 to 3 In one embodiment, first connecting rod is five-ear connecting rod 3, first connecting rod support is five-ear connecting rod support, second connecting rod is four-ear connecting rod 4, second connecting rod support is four-ear connecting rod support, one end of five-ear connecting rod 3 is provided with five-ear connecting rod upper connecting portion 301, five-ear connecting rod upper connecting portion 301 is rotatably connected with the connecting portion 201 of four-ear connecting rod support 2 used as second connecting rod support by pivot, that is, hinged, to form first rotary pair.The other end of five-ear connecting rod 3 is provided with five-ear connecting rod lower connecting portion 302 and first connecting rod oil cylinder connecting portion 303.

[0037] As shown in Figure 6 And Figure 7 As shown in, four-ear connecting rod 4 is integrally formed by four identical structures of ear type combination, and five-ear connecting rod 3 is integrally formed by five identical structures of ear type combination.The structure design, since multiple ears can be stacked with conventional plate thickness, the strength requirement is met, the problem that the thickness of plate material is too thick and the market is not easy to meet the demand is solved, and the stress of multiple ear structure is more uniform, and the stability is good, and when external force is applied, it will not tilt, not only the structure is simple, but also the stability is good, the scrap rate is reduced, and the economic benefit is improved.

[0038] One end of four-ear connecting rod 4 is provided with four-ear connecting rod upper connecting portion 401, the other end of four-ear connecting rod is provided with four-ear connecting rod lower connecting portion 402, five-ear connecting rod lower connecting portion 302 is connected with four-ear connecting rod upper connecting portion 401 through pivot 7 and can rotate relatively, and four-ear connecting rod lower connecting portion 402 is connected with five-ear connecting rod support 5 used as first connecting rod support through guide shaft 6 and can rotate relatively, to form second rotary pair.

[0039] In the embodiment, the first connecting rod is a five-ear connecting rod, and the second connecting rod is a four-ear connecting rod. In other embodiments, other structures of connecting rods can also be used, as long as the connection relationship and relative motion relationship in the use process are met.

[0040] The connecting rod is connected to the support or between the connecting rods, preferably connected through a rotating shaft, of course, other connection modes that can meet the use requirements can also be adopted.

[0041] As shown in Figure 3 The oil cylinder assembly comprises an oil cylinder base 9, an oil cylinder 10, an oil cylinder main shaft 11 and an oil cylinder slave shaft 12, one end of the oil cylinder 10 is provided with a main shaft connecting part 101, the other end of the oil cylinder 10 is provided with a slave shaft connecting part 102, the oil cylinder slave shaft connecting part 101 is movably connected with the first connecting rod oil cylinder connecting part 303 through a through hole on the main body 1, and the oil cylinder main shaft connecting part 102 is movably connected with the oil cylinder base.

[0042] The above structure design replaces the existing single hydraulic cylinder straight push driving or crank slider mechanism with the structure of the oil cylinder combined with the connecting rod, simplifies the structure, reduces the installed power and energy consumption of the same tonnage press, and improves the stability of the forging process equipment.

[0043] As shown in Figure 1 In order to facilitate the fixing of the workpiece, the forging press is also provided with a base 13 for placing the workpiece to be processed, the base 13 is fixedly arranged at the lower part of the guide groove, and the bottom of the base 13 is arranged on the ground.

[0044] As shown in Figure 3 The elastic stop ring 8 is arranged in the clamping groove, which can effectively limit the axial displacement of the rotating shaft and improve the stability of the forging press in use. At the same time, the design of the elastic stop ring on the rotating shaft simplifies the axial fixing mode of the rotating shaft and reduces the assembly difficulty.

[0045] In order to further improve the stability of the forging process, elastic stop rings 8 are arranged at both ends of the rotating shaft.

[0046] As shown in Figure 5 The guide groove is composed of a first guide plate 1-1 and a second guide plate 2-2 fixedly arranged on the main body, which has the advantages of simple structure, convenient processing and easy maintenance, the five-ear connecting rod support 5 and the guide shaft 6 are embedded in the guide groove on the main body 1 and can be slidably matched with the guide groove, so that the accuracy of the forging direction is ensured, and the workpiece deviation can be effectively prevented.

[0047] As shown in Figure 4 The design principle of the forging press of the utility model is as follows:

[0048] Without considering the influence of friction, when the oil cylinder 10 drives the five-ear connecting rod 3 to rotate around the four-ear connecting support 2, according to the principle of moment balance, the system satisfies:

[0049] F1xL1=F2'L2, wherein:

[0050] F1 is the thrust of the oil cylinder;

[0051] F2' is the reaction force of the workpiece on the four-link 4 through the five-link support 5 when forging;

[0052] L1 is the force arm of the oil cylinder;

[0053] L2 is the force arm of the four-link 4.

[0054] In the design, the initial value of L1 is greater than L2, and the farther the oil cylinder 10 is pushed, the greater the ratio of L1 to L2, and therefore F2' is also greater. The forging force F2 generated by the four-link 4 on the workpiece through the five-link support 5 is equal in value and opposite in direction to F2', so the forging force F2 is significantly amplified compared to the oil cylinder force F1. According to the above principle, the hydraulic forging press can effectively reduce the volume of the oil cylinder and its installed power, reduce energy consumption, improve economic efficiency, and is especially suitable for scenes where the forging pressure is large but the high-pressure section requires a short working stroke.

[0055] The specific application of the present utility model is as follows:

[0056] First, in the forging stage, the oil cylinder 10 extends outward, driving the five-link 3 to rotate counterclockwise around the four-link support 2, driving the four-link 4 to rotate clockwise around the link shaft 7 and move downward, pushing the five-link support 5 to move downward along the guide groove, and exerting a vertical pressure on the workpiece on the base 13, completing the forging forming.

[0057] Then, in the reset stage, the oil cylinder 10 retracts, the five-link 3 rotates clockwise, the four-link 4 rotates counterclockwise and moves upward, driving the five-link support 5 to reset along the guide groove, facilitating the removal of the workpiece.

[0058] The embodiments of the present utility model have been described in detail above in combination with the drawings, but the present utility model is not limited thereto, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present utility model.

Claims

1. A multi-link mechanism based forging press, characterized by, At least including: The main body has its bottom in contact with the ground, and a second connecting rod support is fixedly installed on the upper part of the main body. The second connecting rod support has a second support connecting part. A horizontal through hole is provided at the lower part of the second connecting rod support on the main body. A vertical guide groove is provided at the lower part of the through hole. A first connecting rod support is provided in the guide groove. The first connecting rod support has a first support connecting part and can slide up and down along the guide groove. The first connecting rod has an upper connecting part at one end, which is connected to the second connecting rod support connecting part and can rotate relative to the second connecting rod support. The other end of the first connecting rod has a lower connecting part and a cylinder connecting part. The second link has an upper connecting part at one end and a lower connecting part at the other end. The lower connecting part of the first link is connected to the upper connecting part of the second link and can rotate relative to it. The lower connecting part of the second link is connected to the support of the first link and can rotate relative to it. A hydraulic cylinder assembly, including a hydraulic cylinder, wherein one end of the hydraulic cylinder assembly is movably connected to a first connecting rod hydraulic cylinder connection part through a through hole in the main body; Specifically, when the hydraulic cylinder drives the first connecting rod to rotate counterclockwise around the second connecting rod support, the second connecting rod can rotate clockwise and move downward, pushing the first connecting rod support downward; when the hydraulic cylinder retracts, the first connecting rod rotates clockwise, the second connecting rod can rotate counterclockwise and move upward, driving the first connecting rod support upward along the guide groove.

2. The multi-link mechanism based swaging machine as claimed in claim 1, wherein, It also includes a base for placing the workpiece to be processed, the base being fixedly disposed at the lower part of the guide groove, and the bottom of the base being disposed on the ground.

3. The multi-link mechanism based swaging machine as claimed in claim 1, wherein, The hydraulic cylinder assembly includes a hydraulic cylinder base, a hydraulic cylinder, a hydraulic cylinder main shaft, and a hydraulic cylinder driven shaft. One end of the hydraulic cylinder is provided with a main shaft connecting part, and the other end of the hydraulic cylinder is provided with a driven shaft connecting part. The hydraulic cylinder main shaft connecting part is connected to the hydraulic cylinder base, and the hydraulic cylinder driven shaft connecting part passes through a through hole on the main body and is connected to the first connecting rod hydraulic cylinder connecting part and can rotate relative to it.

4. The multi-link mechanism based swaging machine as claimed in claim 1, wherein, The first connecting rod is a five-ear connecting rod, the first connecting rod support is a five-ear connecting rod support, and the upper connecting part of the five-ear connecting rod is rotatably connected to the second connecting rod support through a rotating shaft.

5. The multi-link mechanism based swaging machine as claimed in claim 4, wherein, The five-ear connecting rod is an integral structure composed of five identical ear shapes.

6. The multi-link mechanism based swaging machine as claimed in claim 1, wherein, The second connecting rod is a four-ear connecting rod, and the second connecting rod support is a four-ear connecting rod support. The lower connecting part of the four-ear connecting rod is rotatably connected to the five-ear connecting rod support via a rotating shaft, and the upper connecting part of the four-ear connecting rod is rotatably connected to the lower connecting part of the five-ear connecting rod via a rotating shaft.

7. The multi-link mechanism based swaging machine as claimed in claim 6, wherein, The four-ear connecting rod is an integral structure composed of four ear-shaped parts with the same structure.

8. The multi-link mechanism based swaging machine as claimed in claim 1, wherein, The guide groove consists of two guide plates fixedly installed on the main body.

9. The multi-link mechanism based swaging machine as claimed in claim 1, wherein, The lower connecting part of the second link is rotatably connected to the support of the first link via a guide shaft.

10. The multi-link mechanism based swaging machine as claimed in claim 4 or 6, wherein, The rotating shaft is provided with a slot, and an elastic retaining ring is provided in the slot.

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