A BI-DIRECTIONAL AND DOUBLE-PUNCH BALANCED HIGH-SPEED BODYMAKER

Abstract

A bi-directional and double-punch balanced high-speed bodymaker includes a punch driving mechanism and blank pressing mechanism, wherein: the punch driving mechanism includes a crankshaft, two identical connecting rods, slide rails, sliders and punches. The crankshaft is rotationally supported by a bearing, and the crankshaft has a first crank, second crank and first and second blank pressing cams. Compared with the prior art, the swing lever and secondary connection are removed from each set of punch driving mechanism, simplifying the structure while maintaining all original functions, constituting omitting elements. It adopts two blank pressing cams and arranges the first blank pressing cam driving point of the opposite the second blank pressing cam driving point, and finally, the directions of the first and second torque are opposite and counteract each other, to maintain balance of overall torque on the plane passing the crankshaft axis during the operation of the bodymaker.

Claims

1. A bi-directional and double-punch balanced high-speed bodymaker, which comprises a punch driving mechanism and a blank pressing mechanism, wherein: the punch driving mechanism is composed of the following components: a crankshaft, and the crankshaft is rotationally supported by a bearing, and the crankshaft is provided with a first crank, a second crank, a first blank pressing cam and a second blank pressing cam, two connecting rods, the first connecting rod and the second connecting rod; two slide rails, the first slide rail and the second slide rail; two sliders, the first slider and the second slider; two punches, the first punch and the second punch; wherein: the first crank is rotationally connected with the one end of the first connecting rod, and the other end of the first connecting rod is rotationally connected with the first slider, and the first slider is mounted on the first slide rail and slidably connected relative to the first slide rail, and the first slide rail is fixed relative to the base of the bodymaker, and the first slider is fixedly connected with the first punch; the second crank is rotationally connected with one end of the second connecting rod, and the other end of the second connecting rod is rotationally connected with the second slider, and the second slider is mounted on the second slide rail 32 and slidably connected relative to the second slide rail and the second slide rail is fixed relative to the base of the bodymaker, and the second slider is fixedly connected with the second punch; the first crank, the first connecting rod, the first slider, the first slide rail, the first punch and the first blank pressing cam are located at one end of the crankshaft and form a first punch driving mechanism; the second crank, the second connecting rod, the second slider, the second slide rail, the second punch and the second blank pressing cam are located at the other end of the crankshaft and form a second punch driving mechanism; the blank pressing mechanism is composed of a first blank pressing mechanism and a second blank pressing mechanism, wherein the first blank pressing mechanism is arranged corresponding to the first punch driving mechanism, the first blank pressing cam is drivingly connected with the first blank pressing mechanism and has a first driving point, the second blank pressing mechanism is arranged corresponding to the second punch driving mechanism, and the second blank pressing cam is drivingly connected with the second blank pressing mechanism and has a second driving point; on the plane transverse to the crankshaft axis, the first punch driving mechanism and the second punch driving mechanism are symmetrically arranged with the rotation center point of the crankshaft as the reference; on the plane passing the axis of crankshaft, the turning direction of the first crank is opposite to that of the second crank, and the first blank pressing cam and the second blank pressing cam are fixedly connected relative to the crankshaft, and at the same time, on the plane passing the crankshaft axis, the first driving point of the first blank pressing cam is opposite to the second driving point of the second blank pressing cam; in the working state, the drawing force applied by the first connecting rod to the first crank is defined as the first drawing force, and the drawing force applied by the second connecting rod to the second crank is defined as the second drawing force, the blank pressing force applied by the first blank pressing mechanism to the first blank pressing cam is defined as the first blank pressing force, and the blank pressing force applied by the second blank pressing mechanism to the second blank pressing cam is defined as the second blank pressing force; on the plane passing the crankshaft axis, the first drawing force and the second drawing force are parallel and opposite to each other and form a first torque, the first blank pressing force and the second blank pressing force are parallel and opposite to each other and form a second torque, and the first torque is opposite to the direction of the second torque.

2. The bodymaker of claim 1, wherein: the first crank and the second crank are arranged adjacently in the axial direction of the crankshaft, the first blank pressing cam is arranged outside the axial direction of the first crank, and the second blank pressing cam is arranged outside the axial direction of the second crank.

3. The bodymaker of claim 1, wherein: the first blank pressing cam and the second blank pressing cam are arranged adjacently in the axial direction of the crankshaft, the first crank is arranged outside the axial direction of the first blank pressing cam, and the second crank is arranged outside the axial direction of the second blank pressing cam.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG. 1 is the schematic diagram of the punch driving mechanism of the present invention;

[0025] FIG. 2 is a schematic diagram of the crankshaft of the present invention;

[0026] FIG. 3 is a perspective view of the punch driving mechanism of present invention;

[0027] FIG. 4 is a perspective view of the crankshaft of present invention.

[0028] In the above figures: 1. Crankshaft; 11. First crank; 12. Second crank; 13. First blank pressing cam; 14. Second blank pressing cam; 2. Connecting rod; 21. First connecting rod; 22. Second connecting rod; 3. Slide rail; 31. First slide rail; 32. Second slide rail; 4. Slider; 41. First slider; 42. Second slider; 5. Punch; 51. First punch; 52. Second punch; F1. First drawing force; F2. Second drawing force; F3. First blank pressing force; F4. Second bland pressing force; N1. First torque; N2. Second torque.

SPECIFIC EMBODIMENT

[0029] With reference to the accompanying drawings and embodiment, the present invention will be described in detail.

Embodiment: A Bi-Directional and Double-Punch Balanced High-Speed Bodymaker

[0030] The bodymaker is composed of a box body, two sets of dies, two sets of blank pressing mechanisms, two sets of cup feeding mechanisms, two sets of punch driving mechanisms and two sets of can discharging mechanisms, and since the innovation of the present invention is embodied in the punch driving mechanisms and blank pressing mechanisms, and the existing technology can be adopted for the other mechanisms, so there is no detailed description and introduction of them in the embodiment, which can be understood and accepted by those skilled in the art.

[0031] Refer to FIGS. 1-4, the punch driving mechanism is composed of the following components:

A crankshaft 1 (see FIGS. 2 and 4), and the crankshaft 1 is rotationally supported by a bearing, and the crankshaft 1 is provided with a first crank 11, a second crank 12, a first blank pressing cam 13 and a second blank pressing cam 14. The first crank 11 and the second crank 12 are arranged adjacently in the axial direction of the crankshaft 1, the first blank pressing cam 13 is arranged outside the axial direction of the first crank 11, and the second blank pressing cam 14 is arranged outside the axial direction of the second crank 12 (see FIG. 2).

[0032] Two identical connecting rods 2, i.e. the first connecting rod 21 and the second connecting rod 22 (see FIGS. 1 and 3).

[0033] Two identical slide rails 3, i.e. the first slide rail 31 and the second slide rail 32 (see FIG. 1).

[0034] Two identical sliders 4, i.e. the first slider 41 and the second slider 42 (see FIGS. 1 and 3).

[0035] Two identical punches 5, i.e. the first punch 51 and the second punch 52 (see FIGS. 1 and 3).

[0036] Wherein:

The first crank 11 is rotationally connected with the one end of the first connecting rod 21, and the other end of the first connecting rod 21 is rotationally connected with the first slider 41, and the first slider 41 is mounted on the first slide rail 31 and slidably connected relative to the first slide rail 31, and the first slide rail 31 is fixed relative to the base of the bodymaker, and the first slider 41 is fixedly connected with the first punch 51 (see FIGS. 1 and 3).

[0037] The second crank 12 is rotationally connected with one end of the second connecting rod 22, and the other end of the second connecting rod 22 is rotationally connected with the second slider 42, and the second slider 42 is mounted on the second slide rail 32 and slidably connected relative to the second slide rail 32, and the second slide rail 32 is fixed relative to the base of the bodymaker, and the second slider 42 is fixedly connected with the second punch 52 (see FIGS. 1 and 3).

[0038] 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 blank pressing cam 13 are located at one end of the crankshaft 1 and form a first punch driving mechanism (see FIGS. 1 and 3). The second crank 12, the second connecting rod 22, the second slider 42, the second slide rail 32, the second punch 52 and the second blank pressing cam 14 are located at the other end of the crankshaft 1 and form a second punch driving mechanism (see FIGS. 1 and 3).

[0039] The blank pressing mechanism is composed of a first blank pressing mechanism and a second blank pressing mechanism, wherein the first blank pressing mechanism is arranged corresponding to the first punch driving mechanism, the first blank pressing cam 13 is drivingly connected with the first blank pressing mechanism and has a first driving point, the second blank pressing mechanism is arranged corresponding to the second punch driving mechanism, and the second blank pressing cam 14 is drivingly connected with the second blank pressing mechanism and has a second driving point. In this embodiment, the specific structures of the first blank pressing mechanism and the second blank pressing mechanism are not important, the prior art can be adopted without affecting the implementation and effect of the present invention, as long as the first blank pressing cam 13 can drive the first blank pressing mechanism to compress the edge of the can blank before the can body is drawn.

[0040] On the plane transverse to the axis of crankshaft 1 (the plane shown in FIG. 1), the first punch driving mechanism and the second punch driving mechanism are symmetrically arranged with the rotation center point of the crankshaft as the reference, so as to maintain the balance of overall stress on the plane transverse to the axis of crankshaft 1 during the operation of the bodymaker (see FIG. 1).

[0041] On the plane passing the axis of crankshaft 1 (the plane shown in FIG. 2), the turning direction of the first crank 11 is opposite to that of the second crank 12, and the first blank pressing cam 13 and the second blank pressing cam 14 are fixedly connected relative to the crankshaft 1, and at the same time, on the plane passing the crankshaft 1 axis, the first driving point of the first blank pressing cam 13 is opposite to the second driving point of the second blank pressing cam 14; in the working state, the drawing force applied by the first connecting rod 21 to the first crank 11 is defined as the first drawing force F1, and the drawing force applied by the second connecting rod 22 to the second crank 12 is defined as the second drawing force F2, the blank pressing force applied by the first blank pressing mechanism to the first blank pressing cam 13 is defined as the first blank pressing force F3, and the blank pressing force applied by the second blank pressing mechanism to the second blank pressing cam 14 is defined as the second blank pressing force F4; on the plane passing the crankshaft 1 axis, the first drawing force F1 and the second drawing force F2 are parallel and opposite to each other and form a first torque N1, the first blank pressing force F3 and the second blank pressing force F4 are parallel and opposite to each other and form a second torque N2, and the first torque N1 is opposite to the direction of the second torque N2, so as to maintain the balance of overall torque on the plane passing the crankshaft 1 axis during the operation of the bodymaker.

[0042] The following the description about the other embodiments and structural variations of the present invention:

1. In the above embodiment, as shown in FIG. 2, the first crank 11 and the second crank 12 are arranged adjacently in the axial direction of the crankshaft 1, the first blank pressing cam 13 is arranged outside the axial direction of the first crank 11, and the second blank pressing cam 14 is arranged outside the axial direction of the second crank 12. The invention is not limited to this, instead, the first blank pressing cam 13 and the second blank pressing cam 14 are arranged adjacently in the axial direction of the crankshaft 1, the first crank 11 is arranged outside the axial direction of the first blank pressing cam 13, and the second crank 12 is arranged outside the axial direction of the second blank pressing cam 14. It can even be changed to other configurations, but it is essentially required that the first torque N1 is opposite to the second torque N2 and can play the role of balancing torque on the plane passing the axis of crankshaft 1.
2. In the above embodiment, it adopts two blank pressing cams and arranges the first driving point of the first blank pressing cam 13 opposite to the second driving point of the second blank pressing cam 14, and finally, the directions of the first torque N1 and the second torque N2 are opposite and they counteract each other, so as to maintain the balance of overall torque on the plane passing the crankshaft axis during the operation of the bodymaker. In fact, in the present invention, it is an essential condition that the direction of the first torque N1 is opposite to that of the second torque N2, but whether the first torque N1 and the second torque N2 completely counteracting each other is not an essential condition, which should be determined according to the specific design. Complete counteracting is the optimal option, but partial counteracting is also allowed, which can be finally confirmed according to the comprehensive effect.
3. In the above embodiment, two identical connecting rods 2 are adopted, i.e. the first connecting rod 21 and the second connecting rod 22. Two identical slide rails 3 are adopted, i.e. the first slide rail 31 and the second slide rail 32. Two identical sliders 4 are adopted, i.e. the first slider 41 and the second slider 42. Two identical punches 5 are adopted, i.e. the first punch 51 and the second punch 52. But the invention is not limited to this, for example, the first connecting rod 21 and the second connecting rod 22 may have different shapes or sizes. The first slider 41 and the second slider 42 may have different shapes or sizes.
4. In the above embodiment, the specific structure and form of blank pressing mechanism are not described, because the blank pressing mechanism is an indispensable part of the bodymaker, but the specific structure and form of the blank pressing mechanism in the present invention do not affect the expression and embodiment of the innovative content of the invention. Therefore, in above described technical solution, only the term of blank pressing mechanism is defined, and its specific structure and form are not defined. In fact, what kind of blank pressing mechanism is adopted is not relevant with the invention. As long as the blank pressing mechanism can cooperate with the first blank pressing cam 13 and the second blank pressing cam 14 on the crankshaft 1, the purpose of the invention can be achieved and the expected effect of the invention can be achieved.
5. In the above embodiment, the first drawing force F1 corresponds to the first punch driving mechanism, the first blank pressing force F3 corresponds to the first blank pressing mechanism, while the first punch driving mechanism and the first blank pressing mechanism act on the same drawn can blank. The second drawing force F2 corresponds to the second punch driving mechanism, the second blank pressing force F4 corresponds to the second blank pressing mechanism, while the second punch driving mechanism and the second blank pressing mechanism act on the another same drawn can blank. However, the invention is not limited to this. The first blank pressing force F3 shown in FIG. 2 can be switched with the second blank pressing force F4, that is, the first blank pressing mechanism corresponding to the first blank pressing force F3 can be matched with the second punch driving mechanism, and the second blank pressing mechanism corresponding to the second blank pressing force F4 can be matched with the first punch driving mechanism.

[0043] It should be noted that the above described embodiments are only for illustration of technical concept and characteristics of present invention with purpose of making those skilled in the art understand the present invention, and thus these embodiments shall not limit the protection range of present invention. The equivalent changes or modifications according to spiritual essence of present invention shall fall in the protection scope of present invention.