WO2021093254A1 - 高速平衡双向双冲罐体拉伸机 - Google Patents

高速平衡双向双冲罐体拉伸机 Download PDF

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Publication number
WO2021093254A1
WO2021093254A1 PCT/CN2020/082559 CN2020082559W WO2021093254A1 WO 2021093254 A1 WO2021093254 A1 WO 2021093254A1 CN 2020082559 W CN2020082559 W CN 2020082559W WO 2021093254 A1 WO2021093254 A1 WO 2021093254A1
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WIPO (PCT)
Prior art keywords
crankshaft
punch
cam
blank holder
crank
Prior art date
Application number
PCT/CN2020/082559
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English (en)
French (fr)
Inventor
安旭
孔令光
汪洋
Original Assignee
苏州斯莱克精密设备股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 苏州斯莱克精密设备股份有限公司 filed Critical 苏州斯莱克精密设备股份有限公司
Priority to EP20888471.8A priority Critical patent/EP4059628A4/en
Priority to US17/775,634 priority patent/US20220395888A1/en
Priority to BR112022008970A priority patent/BR112022008970A2/pt
Priority to KR1020227018177A priority patent/KR20220116155A/ko
Publication of WO2021093254A1 publication Critical patent/WO2021093254A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/2669—Transforming the shape of formed can bodies; Forming can bodies from flattened tubular blanks; Flattening can bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/22—Deep-drawing with devices for holding the edge of the blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/28—Deep-drawing of cylindrical articles using consecutive dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
    • B21D31/06—Deforming sheet metal, tubes or profiles by sequential impacts, e.g. hammering, beating, peen forming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/10—Die sets; Pillar guides
    • B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B30B1/261—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks by cams

Definitions

  • the invention relates to a tank stretching equipment, in particular to a two-way double-punch tank stretching machine with better process force and moment balance ability under high-speed working conditions (drawing speed 400 times/min).
  • the so-called can body refers to a metal member having a can body shape, such as a can body of a can, a can body of a battery case, and other metal objects having a can body shape.
  • Metal cans have a wide range of uses in people's daily life and industry. The more typical is the can body of the can and the shell of the lithium battery in the power battery. The annual usage of these cans is huge, especially the cans of cans. With the continuous improvement of people's living standards, the demand for cans is also increasing.
  • the structure is composed of a can body and an easy-open lid.
  • the can body is formed by stretching a metal sheet through a stretching machine.
  • the existing tank stretching machine is usually composed of a cup-in mechanism, an edge-pressing mechanism, a punch drive mechanism, a stretching die, and a tank-out mechanism.
  • the cup feeding mechanism is used to transport the can blank (pre-stretched cup-shaped member) before stretching
  • the edge holding mechanism is used to compress the can blank during stretching
  • the punch drive mechanism is used to provide the can body during stretching.
  • the stamping stroke, the stretching die is used to stretch the can body, and the can-out mechanism is used to unload and output the can body after stretching.
  • the tank stretching machine For the tank stretching machine, its technical core lies in the design and layout of the punch drive mechanism and the blanking mechanism. With the advancement of technology and the combination of market demand, the tank stretching machine is developing in the direction of high speed and high quality. On the one hand, it is required to continuously increase the stretching speed (drawing speed 400 times/min), and on the other hand, it requires high-quality completion. The can body is stretched and formed. This puts forward very high requirements on the balance of process force and moment of the tank stretching machine in its own idle stroke. Therefore, how to maintain the balance of process force and torque of the tank stretcher under high-speed operating conditions is a technical problem in this field.
  • Chinese patent CN102581107A discloses an invention patent named "Two-way Double Punch Tank Stretching Machine” with application number 201210040629.X.
  • the patent uses two sets of punch drive mechanisms to share a crankshaft and arrange them in a symmetrical layout, which can balance the process forces and moments of the pendulum rods, sliders, punches and other components in motion and the production of the tank during the molding process.
  • the reaction force significantly reduces the load of the crankshaft supporting bearing, reduces the bearing design and processing requirements, and prolongs the service life.
  • this patent has achieved obvious effects in reducing the process force and torque through the symmetrical layout of the two sets of punch mechanisms, it still has the following problems: First, the structure is complex and there are many moving parts.
  • This patented solution has two sets of punch drive mechanisms, each of which is composed of a crankshaft, a main connecting rod, a pendulum rod, a secondary connecting rod, a guide rail, a slider, and a punch.
  • the pendulum rod can be used for amplifying and pressing
  • the function of the stroke can reduce the bending radius
  • the secondary connecting rod can reduce the pressure angle between the slider and the guide rail, which is beneficial to the accuracy and stability of the sliding mechanism.
  • the existence of the pendulum rod and the secondary connecting rod also makes the overall size of the equipment change. Large, the mechanism becomes complicated, and the number of moving parts increases. Second, there are still deficiencies in the overall layout and force of the equipment.
  • the invention provides a high-speed balanced two-way double-punch tank stretching machine, which aims to solve the problems of the existing two-way double-punch tank stretching machine with complicated structure and poor balance of process force and torque.
  • the technical solution adopted by the present invention is: a high-speed balanced two-way double-punch tank stretching machine, including a punch drive mechanism and a blanking mechanism.
  • the innovation lies in: the punch drive mechanism is connected by the following components constitute:
  • a crankshaft is rotatably supported by bearings.
  • the crankshaft is provided with a first crank, a second crank, a first blanking cam and a second blanking cam.
  • Two connecting rods namely the first connecting rod and the second connecting rod.
  • Two slide rails namely the first slide rail and the second slide rail.
  • Two sliders namely the first slider and the second slider.
  • Two punches namely the first punch and the second punch.
  • the first crank is rotatably connected with one end of the first connecting rod, the other end of the first connecting rod is rotatably connected with the first sliding block, and the first sliding block is installed on the first sliding rail and slidably connected with the first sliding rail ,
  • the first sliding rail is fixed relative to the base of the tank stretching machine, and the first sliding block is fixedly connected with the first punch.
  • the second crank is rotatably connected with one end of the second connecting rod, the other end of the second connecting rod is rotatably connected with the second sliding block, and the second sliding block is installed on the second sliding rail and slidably connected with the second sliding rail ,
  • the second sliding rail is fixed relative to the base of the tank stretching machine, and the second sliding block is fixedly connected with the second punch.
  • the first crank, the first connecting rod, the first sliding block, the first slide rail, the first punch and the first blanking cam are located on one end side of the crankshaft and constitute a first punch drive mechanism;
  • the two cranks, the second connecting rod, the second sliding block, the second sliding rail, the second punch and the second blanking cam are located on the other end side of the crankshaft, and constitute a second punch driving mechanism.
  • the crimping mechanism is composed of a first crimping mechanism and a second crimping mechanism, wherein the first crimping mechanism is provided corresponding to the first punch driving mechanism, and the first crimping cam is drivingly connected to the first crimping mechanism , And has a first driving point, the second crimping mechanism is arranged corresponding to the second punch driving mechanism, and the second crimping cam is drivingly connected with the second crimping mechanism and has a second driving point.
  • the first punch drive mechanism and the second punch drive mechanism are symmetrically arranged on the basis of the rotation center point of the crankshaft, so that the tank stretcher is in the transverse direction of the crankshaft axis when working. Maintain the overall force balance on the plane.
  • the stretching force applied by the first connecting rod to the first crank is defined as the first A stretching force
  • the stretching force exerted by the second connecting rod on the second crank is the second stretching force
  • the blank holder force exerted by the first blank holder mechanism on the first blank holder cam is the first blank holder force
  • the blank holder force exerted by the second blank holder mechanism on the second blank holder cam is the second blank holder force.
  • the first tensile force and the second tensile force are parallel and opposite to each other, and form a first A moment
  • the first blank holder force and the second blank holder force are parallel and opposite to each other, and form a second moment.
  • the first moment and the second moment are in opposite directions, so that the tank stretcher is working
  • the overall torque balance is maintained on the plane of the crankshaft axis.
  • the tank stretching machine as a complete machine also includes a box body, two sets of molds, two sets of cup-in mechanisms and two sets of tank-out mechanisms in terms of structural composition. Since the innovation of the present invention is embodied in the punch drive mechanism and the edge holding mechanism, the above-mentioned mechanisms can adopt the existing technology, so there is no detailed description and introduction in the above-mentioned solution, which can be understood and accepted by those skilled in the art.
  • the "side-pressing mechanism” refers to a mechanism that compresses the can blank when the can body is stretched (pressed at the bottom edge of the can blank). It is an indispensable part of the tank stretching machine, but the specific structure and form of the edge pressing mechanism in the present invention does not affect the expression and embodiment of the innovative content of the present invention. Therefore, in the above scheme, only the term of the blank holding mechanism is given, and its specific structure and form are not clarified.
  • the "blanking force” refers to the process force used to compress the can blank during the can body stretching process, and does not include the inertial force during the movement of the mechanism.
  • the “stretching force” refers to the process force used to stretch the can blank during the can body stretching process, and does not include the inertial force during the movement of the mechanism.
  • the first and second crankshafts are arranged adjacent to each other in the axial direction of the crankshaft, the first blank holder cam is arranged on the axial outer side of the first crankshaft, and the second blank holder The cam is arranged on the axially outer side of the second crank.
  • the first blank holder cam and the second blank holder cam are arranged adjacent to each other in the axial direction of the crankshaft, the first crank is arranged on the axial outer side of the first blank holder cam, and the second The crank is arranged on the axial outer side of the second blank holder cam.
  • the design principle and concept of the present invention is: in order to solve the problems of the existing two-way double-punch tank stretching machine with complex structure and poor balance of process force and torque, the present invention has made the following in the structural design of the tank stretching machine Two improvements and breakthroughs.
  • the first is that for the existing two-way double-punch tank stretching machine (CN102581107A, plan in Figure 5), the pendulum rod and secondary connection are omitted in each set of punch drive mechanism, and the other end of the main link is directly rotated. Connect to the slider. Thus, the most important punch drive mechanism in the structure of the tank stretching machine is simplified.
  • the second is that in the crankshaft structure design, a first blanking cam is designed for the first crank, and a second blanking cam is designed for the second crank.
  • the blank holder force of the first blank holder mechanism acting on the first blank holder cam and the blank holder force of the second blank holder mechanism acting on the second blank holder cam are designed to be parallel and opposite to each other.
  • technical measures in which the directions of the first moment and the second moment are opposite can be used to achieve the purpose of moment balance.
  • the present invention has the following advantages and effects compared with the existing two-way double-punch tank stretching machine:
  • the pendulum rod and the secondary connection are omitted in each set of punch drive mechanism. From the actual effect, it not only greatly simplifies the structure, but also maintains all the original functions. From the perspective of invention and innovation, the constituent elements are omitted, so it has prominent substantive characteristics.
  • the pendulum rod can play a role in enlarging the stamping stroke and at the same time reduce the bending radius, while the secondary connecting rod can reduce the slider and The pressure angle of the guide rail is conducive to the accuracy and stability of the sliding mechanism.
  • the existence of the pendulum rod and the secondary link also makes the overall size of the equipment larger, the mechanism becomes complex, and the number of moving parts increases. Judging from the design of the existing two-way double-punch tank stretching machine, it seems that the pendulum rod and the secondary connection cannot be omitted in the punch drive mechanism. However, the present invention boldly makes a breakthrough in the structural design, which is important to the technology in the field. Obviously non-obvious to the personnel. As for some of the stress and balance problems that may be caused by the omission of the pendulum rod and the secondary link, the present invention is also overcome by the arrangement of the crimping cam.
  • a first crimping cam and a second crimping cam are specially arranged in the design of the crankshaft structure.
  • This design plays a very important role in the force and balance of the punch drive mechanism.
  • the punch drive mechanism is the core of the tank stretching machine, and it is a motion mechanism with large force and large inertia, especially in the high-speed working state (stretching speed 400 times/min), from the whole machine From the equipment point of view, the problem of process force and torque balance is particularly prominent. It not only affects the service life of the equipment, but also directly affects the stretching quality and effect.
  • crank radius is increased in order to meet the stamping stroke, which makes the problem of torque balance appear particularly prominent, and the impact and load on the crankshaft support bearing become larger.
  • the measure adopted by the present invention to solve this problem is to use two blank holder cams, and arrange the first drive point of the first blank holder cam and the second drive point of the second blank holder cam in opposite positions, and finally pass the crankshaft axis.
  • the first moment and the second moment are in opposite directions and cancel each other, so that the tank stretching machine maintains the overall moment balance on the plane passing the crankshaft axis during operation.
  • the present invention not only absorbs the advantages of the existing two-way double-punch tank stretching machine (CN102581107A) in maintaining the overall force balance on the plane transverse to the crankshaft axis, but also overcomes the existing two-way double-punch tank stretching
  • the machine (CN102581107A) has insufficient torque imbalance on the plane passing the crankshaft axis, and has achieved remarkable results, so that the tank stretching machine maintains the overall torque balance on the plane passing the crankshaft axis when working.
  • the invention can realize the installation without foundation.
  • Tank stretching machine is a large-scale stretching equipment, especially in the high-speed working state (drawing speed 400 times/min), due to the large process force and torque of the equipment, and large vibration, it usually needs foundation installation. At this time, a one-meter deep pit needs to be excavated, and then a larger concrete foundation is poured. Finally, the tank stretching machine is fixed on the concrete foundation. Since the present invention fully considers the balance factors of force and moment in the design of the whole machine, the manufactured equipment can be installed without foundation, which brings great convenience to the installation and construction, and also saves the installation cost.
  • Figure 1 is a schematic diagram of the punch drive mechanism of the present invention
  • FIG. 2 is a schematic diagram of the crankshaft of the present invention
  • Figure 3 is a perspective view of a punch drive mechanism according to an embodiment of the present invention.
  • Fig. 4 is a perspective view of a crankshaft according to an embodiment of the present invention.
  • Example A high-speed balanced two-way double-punch tank stretching machine
  • the tank stretching machine is composed of a box, two sets of molds, two sets of edge holding mechanisms, two sets of cup feeding mechanisms, two sets of punch drive mechanisms and two sets of can ejecting mechanisms.
  • the innovation of the present invention is embodied in the punching mechanism.
  • the remaining structures or mechanisms of the rod driving mechanism and the pressing mechanism can all adopt the existing technology, so the detailed description and introduction will not be made in this embodiment, which can be understood and accepted by those skilled in the art.
  • the punch drive mechanism is composed of the following components:
  • crankshaft 1 (see Figures 2 and 4), the crankshaft 1 is rotatably supported by bearings, the crankshaft 1 is provided with a first crank 11, a second crank 12, a first blanking cam 13 and a second blanking cam 14 .
  • the first crankshaft 11 and the second crankshaft 12 are arranged adjacently in the axial direction of the crankshaft 1, the first blanking cam 13 is arranged on the axially outer side of the first crank 11, and the second blanking cam 14 is arranged on the axially outer side of the second crank 12 (see FIG. 2).
  • Two identical sliding rails namely the first sliding rail 31 and the second sliding rail 32 (see Fig. 1).
  • the first crank 11 is rotatably connected with one end of the first connecting rod 21, and the other end of the first connecting rod 21 is rotatably connected with the first sliding block 41, and the first sliding block 41 is installed on the first sliding rail 31 and opposite to each other.
  • the first sliding rail 31 is slidably connected, the first sliding rail 31 is fixed relative to the base of the tank stretching machine, and the first sliding block 31 is fixedly connected to the first punch 51 (see Figures 1 and 3).
  • the second crank 12 is rotatably connected with one end of the second connecting rod 22, and the other end of the second connecting rod 22 is rotatably connected with the second sliding block 42.
  • the second sliding block 42 is installed on the second sliding rail 32 and is opposite to each other.
  • the second sliding rail 32 is slidably connected, the second sliding rail 32 is fixed relative to the base of the tank stretching machine, and the second sliding block 32 is fixedly connected to the second punch 52 (see Figures 1 and 3).
  • the first crank 11, the first connecting rod 21, the first slider 41, the first slide rail 31, the first punch 51 and the first blanking cam 13 are located on one end side of the crankshaft 1, and constitute a first punch Rod drive mechanism (see Figure 1 and Figure 3).
  • the second crank 12, the second connecting rod 22, the second sliding block 42, the second sliding rail 32, the second punch 52 and the second blanking cam 14 are located on the other end side of the crankshaft 1, and constitute a second Punch drive mechanism (see Figure 1 and Figure 3).
  • the crimping mechanism is composed of a first crimping mechanism and a second crimping mechanism, wherein the first crimping mechanism is provided corresponding to the first punch driving mechanism, and the first crimping cam 13 is driven by the first crimping mechanism It is connected and has a first driving point, the second crimping mechanism is arranged corresponding to the second punch driving mechanism, and the second crimping cam 14 is drivingly connected to the second crimping mechanism and has a second driving point.
  • the existing technology can be used without affecting the implementation and effects of the present invention, as long as the first crimping cam 13 can drive the first crimping cam 13 An edge pressing mechanism is sufficient to perform the pressing task of the edge of the can before the can body is stretched.
  • the first punch drive mechanism and the second punch drive mechanism are symmetrically arranged on the basis of the rotation center point of the crankshaft 1, so that the tank When the body stretching machine is working, the overall force balance is maintained on the plane transverse to the axis of the crankshaft 1 (see Figure 1).
  • the first crank 11 and the second crank 12 are arranged adjacent to each other in the axial direction of the crankshaft 1, and the first blanking cam 13 is arranged on the first crank 11
  • the second blank holder cam 14 is arranged on the axial outer side of the second crank 12.
  • the present invention is not limited to this, and the first blank holder cam 13 and the second blank holder cam 14 may be arranged adjacently in the axial direction of the crankshaft 1, and the first crank 11 is arranged on the first blank holder cam 13
  • the second crank 12 is arranged on the axial outer side of the second blank holder cam 14. It can even be changed to other arrangements, but it is essentially required that the first moment N1 and the second moment N2 are in opposite directions, so that the moment can be balanced on a plane passing through the axis of the crankshaft 1.
  • first moment N1 It is opposite to the second moment N2 and cancels each other out, so that the tank stretching machine maintains the overall moment balance on the plane passing the crankshaft axis when the tank stretcher is working.
  • first connecting rod 21 and the second connecting rod 22 are used, namely the first connecting rod 21 and the second connecting rod 22.
  • Two identical slide rails 3 are used, namely the first slide rail 31 and the second slide rail 32.
  • Two identical sliders 4, namely the first slider 41 and the second slider 42 are used.
  • Two identical punches 5 are used, namely the first punch 51 and the second punch 52.
  • the present invention is not limited to this.
  • the first connecting rod 21 and the second connecting rod 22 may have different shapes or different sizes.
  • the first sliding block 41 and the second sliding block 42 may have different shapes, and may also have different sizes.
  • the specific structure and form of the crimping mechanism are not described, because the crimping mechanism is an indispensable part of the tank stretching machine, but the specific structure of the crimping mechanism in the present invention
  • the sum form does not affect the expression and embodiment of the innovative content of the present invention. Therefore, in the above scheme, only the term of the blank holding mechanism is given, and its specific structure and form are not clarified. In fact, what kind of crimping mechanism is used has nothing to do with the present invention. As long as the crimping mechanism can work with the first crimping cam 13 and the second crimping cam 14 on the crankshaft 1, the object of the present invention can be achieved, and To achieve the expected effect of the present invention.
  • the first stretching force F1 corresponds to the first punch drive mechanism
  • the first blank holder force F3 corresponds to the first blank press mechanism
  • the first punch drive mechanism and the first blank press mechanism act on the same
  • the can blank is stretched.
  • the second stretching force F2 corresponds to the second punch drive mechanism
  • the second blank holder force F4 corresponds to the second blank holder mechanism
  • the second punch drive mechanism and the second blank holder act on another can blank to be stretched.
  • the present invention is not limited to this.
  • the first blank holder force F3 and the second blank holder force F4 shown in FIG. 2 can be exchanged, that is, the first blank holder mechanism and the second punch corresponding to the first blank holder force F3
  • the driving mechanism is matched, and the second blanking mechanism corresponding to the second blanking force F4 is matched with the first punch driving mechanism.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

一种高速平衡双向双冲罐体拉伸机，包括冲杆驱动机构和压边机构，所述冲杆驱动机构由一个曲轴（1）、两个相同的连杆（2）、两个相同的滑轨（3）、两个相同的滑块（4）和两个相同的冲杆（5）连接构成。其中，该曲轴由轴承转动支承，曲轴上设有第一曲拐（11）、第二曲拐（12）、第一压边凸轮（13）和第二压边凸轮（14）。本拉伸机具有两个特点：第一，每套冲杆驱动机构中均省去了摆杆和次连接，大大简化了结构，而且依然保持了原有的全部功能，构成了要素省略。第二，利用两个压边凸轮，并将第一压边凸轮的第一驱动点与第二压边凸轮的第二驱动点位置作相反布置，最终让第一力矩与第二力矩方向相反，并相互抵消，使罐体拉伸机工作时在过曲轴轴线的平面上保持整体力矩平衡。

Description

高速平衡双向双冲罐体拉伸机 技术领域
本发明涉及罐体拉伸设备，特别涉及一种在高速工作条件下(拉伸速度400次/分)具有较好的工艺力和力矩平衡能力的双向双冲罐体拉伸机。所谓罐体是指具有罐体形状的金属构件，比如易拉罐的罐体，电池壳的罐体以及其他具有罐体形状的金属物件。
背景技术
金属罐体在人们日常生活和工业中具有广泛的用途。比较典型的是易拉罐的罐体以及动力电池中锂电池的壳体。这些罐体每年的使用量十分巨大，特别是易拉罐的罐体，随着人们生活水平的不断提高，易拉罐的需求量也越来越大。
易拉罐通常有铝质和铁质两种，其结构由罐体和易拉盖两部分组成，其中，罐体均由金属片材通过拉伸机拉伸形成。现有罐体拉伸机通常由进杯机构、压边机构、冲杆驱动机构、拉伸模具和出罐机构几部分组合构成。其中，进杯机构用于输送拉伸前的罐坯(预拉伸的杯形构件)，压边机构用于拉伸时压紧罐坯，冲杆驱动机构用来提供罐体拉伸时的冲压行程，拉伸模具用于拉伸成形罐体，出罐机构用于拉伸后的卸料及输出罐体。对于罐体拉伸机来说，其技术核心在于冲杆驱动机构和压边机构的设计及其布局。随着技术进步并结合市场需求，罐体拉伸机朝着高速和高质并举的方向发展，一方面要求不断提高拉伸速度(拉伸速度400次/分)，另一方面要求高质量完成罐体拉伸成形。这对罐体拉伸机在自身空行程中的工艺力和力矩平衡提出了非常高的要求。于是在高速运转条件如何来保持罐体拉伸机的工艺力和力矩平衡是本领域中的技术难题。
中国专利CN102581107A公开了一件名为《双向双冲罐体拉伸机》，申请号为201210040629.X的发明专利案。该专利将两套冲杆驱动机构共用一个曲轴后，以对称布局的方式进行布置，可以平衡摆杆、滑块、冲杆等部件在运动中的工艺力和力矩以及罐体成型过程中产生的反作用力，从而显著地减少了曲轴支承轴承的载荷，降低了轴承设计和加工要求，延长了使用寿命。此专利通过两套冲杆机构的对称性布局尽管在减少工艺力和力矩方面取得了明显的效果，但仍存在以下问题：第一，结构复杂，运动部件多。该专利方案有两套冲杆驱动机构，每套冲杆驱动机构均由曲轴、主连杆、摆杆、次连杆、导轨、滑块和冲杆组成，其中，摆杆可以起到放大冲压行程的作用，同时可以减小曲拐半径；次连杆可以减小滑块与导轨的压力角，有利于滑动机构的精确和稳定，然而摆杆和次连杆的存在也使得设备整体尺寸变大，机构变得复杂，而且运动部件增多。第二，设备在整体布局和受力方面仍存在不足。比如采用专利图5所示的第一种布局设计时，由于两个摆杆在运动过程中保持对称性，因此设备在水平方向的工艺力和力矩能够保持平衡，但在竖直方向 非但不平衡，而且是两者叠加。如果采用专利图9所示的第二种布局设计，尽管从工艺力和力矩的角度看水平和竖直方向基本能够保持平衡，但结构变得非常复杂，左右拉伸工位在竖直方向存在较大落差。
有鉴于此，如何设计一种结构更加简单，而且更有利于工艺力和力矩平衡的双向双冲罐体拉伸机是本发明研究的课题。
发明内容
本发明提供一种高速平衡双向双冲罐体拉伸机，其目的是要解决现有双向双冲罐体拉伸机结构复杂，工艺力和力矩平衡效果不佳的问题。
为达到上述目的，本发明采用的技术方案是：一种高速平衡双向双冲罐体拉伸机，包括冲杆驱动机构和压边机构，其创新在于：所述冲杆驱动机构由下列构件连接构成：
一个曲轴，该曲轴由轴承转动支承，曲轴上设有第一曲拐、第二曲拐、第一压边凸轮和第二压边凸轮。
两个连杆，即第一连杆和第二连杆。
两个滑轨，即第一滑轨和第二滑轨。
两个滑块，即第一滑块和第二滑块。
两个冲杆，即第一冲杆和第二冲杆。
其中：
所述第一曲拐与第一连杆的一端转动连接，第一连杆的另一端与第一滑块转动连接，第一滑块安装在第一滑轨上并相对第一滑轨滑动连接，第一滑轨相对于所述罐体拉伸机的机座固定，第一滑块与第一冲杆固定连接。
所述第二曲拐与第二连杆的一端转动连接，第二连杆的另一端与第二滑块转动连接，第二滑块安装在第二滑轨上并相对第二滑轨滑动连接，第二滑轨相对于所述罐体拉伸机的机座固定，第二滑块与第二冲杆固定连接。
所述第一曲拐、第一连杆、第一滑块、第一滑轨、第一冲杆以及第一压边凸轮位于曲轴的一端侧，并构成第一冲杆驱动机构；所述第二曲拐、第二连杆、第二滑块、第二滑轨、第二冲杆以及第二压边凸轮位于曲轴的另一端侧，并构成第二冲杆驱动机构。
所述压边机构由第一压边机构和第二压边机构组成，其中，第一压边机构对应第一冲杆驱动机构设置，所述第一压边凸轮与第一压边机构驱动连接，并具有第一驱动点，第二压边机构对应第二冲杆驱动机构设置，所述第二压边凸轮与第二压边机构驱动连接，并具有第二驱动点。
在横截曲轴轴线的平面上，所述第一冲杆驱动机构与第二冲杆驱动机构以曲轴的转动中心点为基准对称布置，使所述罐体拉伸机工作时在横截曲轴轴线的平面上保持整体受 力平衡。
在过曲轴轴线的平面上，所述第一曲拐与第二曲拐的拐向相反，所述第一压边凸轮和第二压边凸轮相对于曲轴固定连接，同时在过曲轴轴线的平面上，所述第一压边凸轮的第一驱动点与第二压边凸轮的第二驱动点位置相反；在工作状态下，定义第一连杆对第一曲拐施加的拉伸力为第一拉伸力，第二连杆对第二曲拐施加的拉伸力为第二拉伸力，第一压边机构对第一压边凸轮施加的压边力为第一压边力，第二压边机构对第二压边凸轮施加的压边力为第二压边力，在过曲轴轴线的平面上，第一拉伸力与第二拉伸力相互平行且方向相反，并形成第一力矩，第一压边力与第二压边力相互平行且方向相反，并形成第二力矩，所述第一力矩与第二力矩方向相反，使所述罐体拉伸机工作时在过曲轴轴线的平面上保持整体力矩平衡。
上述技术方案中的有关内容解释如下：
1.上述方案中，所述罐体拉伸机作为整机从结构组成上还包括有箱体、两套模具、两套进杯机构和两套出罐机构。由于本发明的创新体现在冲杆驱动机构和压边机构上，上述这些机构可以采用现有技术，所以在上述方案中没有详细描述和介绍，这是本领域技术人员能够理解和接受的。
2.上述方案中，所述“压边机构”是指在罐体拉伸时压紧罐坯的机构(压在罐坯底部边缘位置)。对于罐体拉伸机来说是不可缺少的组成部分，但在本发明中压边机构具体的结构和形式不影响本发明的创新内容的表达和体现。所以在上述方案中仅给出了压边机构的名词，并未明确其具体的结构和形式。
3.上述方案中，所述“在横截曲轴1轴线的平面上”相当于图1所示的平面。所述“在过曲轴1轴线的平面上”相当于图2所示的平面。
4.上述方案中，所述“压边力”是指在罐体拉伸过程中用来压紧罐坯的工艺力，不包括机构运动过程中的惯性力。所述“拉伸力”是指在罐体拉伸过程中用来拉伸罐坯的工艺力，不包括机构运动过程中的惯性力。
5.上述方案中，所述第一曲拐和第二曲拐在曲轴的轴向上相邻布置，所述第一压边凸轮布置在第一曲拐的轴向外侧，而第二压边凸轮布置在第二曲拐的轴向外侧。
6.上述方案中，所述第一压边凸轮和第二压边凸轮在曲轴的轴向上相邻布置，所述第一曲拐布置在第一压边凸轮的轴向外侧，而第二曲拐布置在第二压边凸轮的轴向外侧。
本发明设计原理和构思是：为了解决现有双向双冲罐体拉伸机结构复杂，工艺力和力矩平衡效果不佳的问题，本发明在罐体拉伸机的结构设计中，做了以下两方面的改进和突破。
第一是，针对现有双向双冲罐体拉伸机(CN102581107A，图5方案)，在每套冲杆 驱动机构中均省去了摆杆和次连接，将主连杆的另一端直接转动连接到滑块。从而使罐体拉伸机结构中最重要的冲杆驱动机构得到简化。
第二是，在曲轴结构设计中针对第一曲拐设计有第一压边凸轮，针对第二曲拐设计有第二压边凸轮。同时将第一压边机构作用于第一压边凸轮的压边力与第二压边机构作用于第二压边凸轮的压边力设计成相互平行且方向相反。最终可以利用第一力矩与第二力矩方向相反的技术措施来达到力矩平衡的目的。
由于上述技术方案的运用，本发明与现有双向双冲罐体拉伸机相比具有以下优点和效果：
1.本发明在每套冲杆驱动机构中均省去了摆杆和次连接。从实际效果来看不仅大大简化了结构，而且依然保持了原有的全部功能，从发明创新的角度构成了要素省略，因此具有突出的实质性特点。对于现有双向双冲罐体拉伸机(CN102581107A，图5方案)来说，摆杆可以起到放大冲压行程的作用，同时可以减小曲拐半径，而次连杆可以减小滑块与导轨的压力角，有利于滑动机构的精确和稳定，然而摆杆和次连杆的存在也使得设备整体尺寸变大，机构变得复杂，而且运动部件增多。从现有双向双冲罐体拉伸机设计来看，似乎摆杆和次连接在冲杆驱动机构中是无法加以省略的，但本发明在结构设计方面大胆作出了突破，这对于本领域技术人员来说显然具有非显而易见性。至于省略摆杆和次连杆可能带来的一些受力和平衡问题本发明也通过压边凸轮的布置加以克服。
2.本发明在曲轴结构设计中特意设置有第一压边凸轮和第二压边凸轮。这种设计对于冲杆驱动机构的受力和平衡起到了非常重要的作用。本领域技术人员知道，冲杆驱动机构是罐体拉伸机的核心，而且是受力大、惯性大的运动机构，特别在高速工作状态下(拉伸速度400次/分)，从整台设备来看工艺力和力矩平衡问题显得格外突出，它不仅影响设备的使用寿命，而且直接影响拉伸质量和效果。对于现有双向双冲罐体拉伸机(CN102581107A)来说，图5所示的第一种布局设计，由于两个摆杆在运动过程中保持对称性，因此设备在水平方向(图5所示的横向，相对于本发明所述“在横截曲轴轴线的平面上”的左右方向)的工艺力和力矩能够保持平衡，但在水平面内(相对于本发明所述“在过曲轴轴线的平面上”的左右方向)由于第一连杆对第一曲拐的拉伸力与第二连杆对第二曲拐的拉伸力相互平行且方向相反，形成有第一力矩，导致曲轴和支承轴承受力不平衡。特别是本发明省略了摆杆后，为了满足冲压行程增加了曲拐半径，这使得力矩平衡问题显得格外突出，对曲轴支承轴承的冲击和载荷变大。本发明为了解决这个问题采用的措施是利用两个压边凸轮，并将第一压边凸轮的第一驱动点与第二压边凸轮的第二驱动点位置作相反布置，最终在过曲轴轴线的平面上，所述第一力矩与第二力矩方向相反，并相互抵消，使罐体拉伸机工作时在过曲轴轴线的平面上保持整体力矩平衡。由此可见，本发明不仅吸取了现有双向双冲 罐体拉伸机(CN102581107A)在横截曲轴轴线的平面上保持整体受力平衡的优点，而且克服了现有双向双冲罐体拉伸机(CN102581107A)在过曲轴轴线的平面上力矩不平衡的不足，取得了显著的效果，使罐体拉伸机工作时在过曲轴轴线的平面上保持整体力矩平衡。
3.本发明可以实现无地基安装。罐体拉伸机属于大型拉伸设备，特别是在高速工作状态下(拉伸速度400次/分)，由于设备工艺力和力矩大、振动大，通常都需要有地基安装。此时需要挖掘一米深的地坑，然后浇注较大的混凝土地基。最终将罐体拉伸机固定在混凝土地基上。由于本发明在整机设计中充分考虑了力和力矩的平衡因素，制成的设备可以实现无地基安装，为安装施工带来了极大的便利，同时也节约安装成本。
附图说明
附图1为本发明冲杆驱动机构原理图；
附图2为本发明曲轴原理图；
附图3为本发明实施例冲杆驱动机构立体图；
附图4为本发明实施例曲轴立体图。
以上附图中：1.曲轴；11.第一曲拐；12.第二曲拐；13.第一压边凸轮；14.第二压边凸轮；2.连杆；21.第一连杆；22.第二连杆；3.滑轨；31.第一滑轨；32.第二滑轨；4.滑块；41.第一滑块；42.第二滑块；5.冲杆；51.第一冲杆；52.第二冲杆；F1.第一拉伸力；F2.第二拉伸力；F3.第一压边力；F4.第二压边力；N1.第一力矩；N2.第二力矩。
具体实施方式
下面结合附图及实施例对本发明作进一步描述：
实施例：一种高速平衡双向双冲罐体拉伸机
该罐体拉伸机由箱体、两套模具、两套压边机构、两套进杯机构、两套冲杆驱动机构和两套出罐机构组成，其中，由于本发明的创新体现在冲杆驱动机构和压边机构上，其余结构或机构均可以采用现有技术，所以在本实施例中不作详细描述和介绍，这是本领域技术人员能够理解和接受的。
参见图1-图4，所述冲杆驱动机构由下列构件连接构成：
一个曲轴1(见图2和图4)，该曲轴1由轴承转动支承，曲轴1上设有第一曲拐11、第二曲拐12、第一压边凸轮13和第二压边凸轮14。所述第一曲拐11和第二曲拐12在曲轴1的轴向上相邻布置，所述第一压边凸轮13布置在第一曲拐11的轴向外侧，而第二压边凸轮14布置在第二曲拐12的轴向外侧(见图2)。
两个相同的连杆2，即第一连杆21和第二连杆22(见图1和图3)。
两个相同的滑轨3，即第一滑轨31和第二滑轨32(见图1)。
两个相同的滑块4，即第一滑块41和第二滑块42(见图1和图3)。
两个相同的冲杆5，即第一冲杆51和第二冲杆52(见图1和图3)。
其中：
所述第一曲拐11与第一连杆21的一端转动连接，第一连杆21的另一端与第一滑块41转动连接，第一滑块41安装在第一滑轨31上并相对第一滑轨31滑动连接，第一滑轨31相对于所述罐体拉伸机的机座固定，第一滑块31与第一冲杆51固定连接(见图1和图3)。
所述第二曲拐12与第二连杆22的一端转动连接，第二连杆22的另一端与第二滑块42转动连接，第二滑块42安装在第二滑轨32上并相对第二滑轨32滑动连接，第二滑轨32相对于所述罐体拉伸机的机座固定，第二滑块32与第二冲杆52固定连接(见图1和图3)。
所述第一曲拐11、第一连杆21、第一滑块41、第一滑轨31、第一冲杆51以及第一压边凸轮13位于曲轴1的一端侧，并构成第一冲杆驱动机构(见图1和图3)。所述第二曲拐12、第二连杆22、第二滑块42、第二滑轨32、第二冲杆52以及第二压边凸轮14位于曲轴1的另一端侧，并构成第二冲杆驱动机构(见图1和图3)。
所述压边机构由第一压边机构和第二压边机构组成，其中，第一压边机构对应第一冲杆驱动机构设置，所述第一压边凸轮13与第一压边机构驱动连接，并具有第一驱动点，第二压边机构对应第二冲杆驱动机构设置，所述第二压边凸轮14与第二压边机构驱动连接，并具有第二驱动点。在本实施例中，致于第一压边机构和第二压边机构具体结构不重要，可以采用现有技术，并不影响本发明的实施和效果，只要第一压边凸轮13能够驱动第一压边机构在罐体拉伸前去执行罐坯边缘的压紧任务就可以了。
在横截曲轴1轴线的平面上(即图1所示的平面)，所述第一冲杆驱动机构与第二冲杆驱动机构以曲轴1的转动中心点为基准对称布置，使所述罐体拉伸机工作时在横截曲轴1轴线的平面上保持整体受力平衡(见图1)。
在过曲轴1轴线的平面上(即图2所示的平面)，所述第一曲拐11与第二曲拐12的拐向相反，所述第一压边凸轮13和第二压边凸轮14相对于曲轴1固定连接，同时在过曲轴1轴线的平面上，所述第一压边凸轮13的第一驱动点与第二压边凸轮14的第二驱动点位置相反；在工作状态下，定义第一连杆21对第一曲拐11施加的拉伸力为第一拉伸力F1，第二连杆22对第二曲拐12施加的拉伸力为第二拉伸力F2，第一压边机构对第一压边凸轮13施加的压边力为第一压边力F3，第二压边机构对第二压边凸轮14施加的压边力为第二压边力F4，在过曲轴1轴线的平面上，第一拉伸力F1与第二拉伸力F2相互平行且方向相反，并形成第一力矩N1，第一压边力F3与第二压边力F4相互平行且方向相反，并形成第二力矩N2，所述第一力矩N1与第二力矩N2方向相反，使所述罐体拉伸机工作时在过曲 轴1轴线的平面上保持整体力矩平衡(见图1)。
下面针对本发明的其他实施情况以及结构变化作如下说明：
1.以上实施例中，如图2所示，第一曲拐11和第二曲拐12在曲轴1的轴向上相邻布置，所述第一压边凸轮13布置在第一曲拐11的轴向外侧，而第二压边凸轮14布置在第二曲拐12的轴向外侧。但本发明不局限于此，可以改为第一压边凸轮13和第二压边凸轮14在曲轴1的轴向上相邻布置，所述第一曲拐11布置在第一压边凸轮13的轴向外侧，而第二曲拐12布置在第二压边凸轮14的轴向外侧。甚至可以改变为其他布置形式，但本质上要求所述第一力矩N1与第二力矩N2方向相反，能够在过曲轴1轴线的平面上起到平衡力矩的作用即可。
2.以上实施例中，利用两个压边凸轮，并将第一压边凸轮13的第一驱动点与第二压边凸轮14的第二驱动点位置作相反布置，最终让第一力矩N1与第二力矩N2方向相反，并相互抵消，使罐体拉伸机工作时在过曲轴轴线的平面上保持整体力矩平衡。实际上在本发明中，第一力矩N1与第二力矩N2方向相反是必要条件，但第一力矩N1与第二力矩N2是否完全抵消不是必要条件，这要根据具体的设计来确定。能够做到完全抵消是最佳选择，但也允许选择部分抵消的方案，最终可以根据综合的效果来确认。
3.以上实施例中，采用了两个相同的连杆2，即第一连杆21和第二连杆22。采用了两个相同的滑轨3，即第一滑轨31和第二滑轨32。采用了两个相同的滑块4，即第一滑块41和第二滑块42。采用了两个相同的冲杆5，即第一冲杆51和第二冲杆52。但本发明不局限于此，比如，第一连杆21与第二连杆22可以外形不一样，也可以有些尺寸不一样。第一滑块41与第二滑块42可以外形不一样，也可以有些尺寸不一样。
4.以上实施例中，没有对压边机构的具体结构和形式加以说明，因为对于罐体拉伸机来说压边机构是不可缺少的组成部分，但在本发明中压边机构具体的结构和形式不影响本发明的创新内容的表达和体现。所以在上述方案中仅给出了压边机构的名词，并未明确其具体的结构和形式。实际上采用什么样的压边机构与本发明无关，只要该压边机构能够与曲轴1上的第一压边凸轮13和第二压边凸轮14配合工作，就可以达到本发明的目的，并实现本发明预期的效果。
5.以上实施例中，第一拉伸力F1对应第一冲杆驱动机构，第一压边力F3对应第一压边机构，而第一冲杆驱动机构和第一压边机构作用于同一被拉伸罐坯。第二拉伸力F2对应第二冲杆驱动机构，第二压边力F4对应第二压边机构，而第二冲杆驱动机构和第二压边机构作用于另一个同一被拉伸罐坯。但本发明不局限于此，可以将图2所示的第一压边力F3与第二压边力F4进行交换，即将对应第一压边力F3的第一压边机构与第二冲杆驱动机构进行配套，同时将对应第二压边力F4的第二压边机构与第一冲杆驱动机构进行配套。
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。

Claims (3)

  1. 一种高速平衡双向双冲罐体拉伸机，包括冲杆驱动机构和压边机构，其特征在于：所述冲杆驱动机构由下列构件连接构成：
    一个曲轴(1)，该曲轴(1)由轴承转动支承，曲轴(1)上设有第一曲拐(11)、第二曲拐(12)、第一压边凸轮(13)和第二压边凸轮(14)；
    两个连杆(2)，即第一连杆(21)和第二连杆(22)；
    两个滑轨(3)，即第一滑轨(31)和第二滑轨(32)；
    两个滑块(4)，即第一滑块(41)和第二滑块(42)；
    两个冲杆(5)，即第一冲杆(51)和第二冲杆(52)；
    其中：
    所述第一曲拐(11)与第一连杆(21)的一端转动连接，第一连杆(21)的另一端与第一滑块(41)转动连接，第一滑块(41)安装在第一滑轨(31)上并相对第一滑轨(31)滑动连接，第一滑轨(31)相对于所述罐体拉伸机的机座固定，第一滑块(31)与第一冲杆(51)固定连接；
    所述第二曲拐(12)与第二连杆(22)的一端转动连接，第二连杆(22)的另一端与第二滑块(42)转动连接，第二滑块(42)安装在第二滑轨(32)上并相对第二滑轨(32)滑动连接，第二滑轨(32)相对于所述罐体拉伸机的机座固定，第二滑块(32)与第二冲杆(52)固定连接；
    所述第一曲拐(11)、第一连杆(21)、第一滑块(41)、第一滑轨(31)、第一冲杆(51)以及第一压边凸轮(13)位于曲轴(1)的一端侧，并构成第一冲杆驱动机构；所述第二曲拐(12)、第二连杆(22)、第二滑块(42)、第二滑轨(32)、第二冲杆(52)以及第二压边凸轮(14)位于曲轴(1)的另一端侧，并构成第二冲杆驱动机构；
    所述压边机构由第一压边机构和第二压边机构组成，其中，第一压边机构对应第一冲杆驱动机构设置，所述第一压边凸轮(13)与第一压边机构驱动连接，并具有第一驱动点，第二压边机构对应第二冲杆驱动机构设置，所述第二压边凸轮(14)与第二压边机构驱动连接，并具有第二驱动点；
    在横截曲轴(1)轴线的平面上，所述第一冲杆驱动机构与第二冲杆驱动机构以曲轴(1)的转动中心点为基准对称布置；
    在过曲轴(1)轴线的平面上，所述第一曲拐(11)与第二曲拐(12)的拐向相反，所述第一压边凸轮(13)和第二压边凸轮(14)相对于曲轴(1)固定连接，同时在过曲轴(1)轴线的平面上，所述第一压边凸轮(13)的第一驱动点与第二压边凸轮(14)的第二驱动点位置相反；在工作状态下，定义第一连杆(21)对第一曲拐(11)施加的拉伸力为第一拉伸力(F1)，第二连杆(22)对第二曲拐(12)施加的拉伸力为第二拉伸力(F2)，第 一压边机构对第一压边凸轮(13)施加的压边力为第一压边力(F3)，第二压边机构对第二压边凸轮(14)施加的压边力为第二压边力(F4)，在过曲轴(1)轴线的平面上，第一拉伸力(F1)与第二拉伸力(F2)相互平行且方向相反，并形成第一力矩(N1)，第一压边力(F3)与第二压边力(F4)相互平行且方向相反，并形成第二力矩(N2)，所述第一力矩(N1)与第二力矩(N2)方向相反。
  2. 根据权利要求1所述的罐体拉伸机，其特征在于：所述第一曲拐(11)和第二曲拐(12)在曲轴(1)的轴向上相邻布置，所述第一压边凸轮(13)布置在第一曲拐(11)的轴向外侧，而第二压边凸轮(14)布置在第二曲拐(12)的轴向外侧。
  3. 根据权利要求1所述的罐体拉伸机，其特征在于：所述第一压边凸轮(13)和第二压边凸轮(14)在曲轴(1)的轴向上相邻布置，所述第一曲拐(11)布置在第一压边凸轮(13)的轴向外侧，而第二曲拐(12)布置在第二压边凸轮(14)的轴向外侧。
PCT/CN2020/082559 2019-11-11 2020-03-31 高速平衡双向双冲罐体拉伸机 WO2021093254A1 (zh)

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