Cutting mechanism for two-piece cans

Abstract

The utility model discloses a cutting mechanism for a two-piece can, which relates to the field of can making equipment, and comprises an upper template and a lower template which are oppositely arranged up and down, the upper template is provided with an upper die holder which is fixedly arranged, an upper die assembly is arranged in the upper template, and a lower die assembly is arranged in the lower template; a plurality of piston mechanisms are arranged at the positions, corresponding to the four corners of the upper die assembly, of the upper die plate, and each piston mechanism comprises a cylinder body, a piston rod and a piston rod, the piston is mounted in the cylinder body in a sealing and sliding manner; the ejector rod is fixedly mounted at the lower end of the piston; a material pressing ring which is in contact fit with the ejector rod and corresponds to the periphery of the special-shaped can is further arranged below the ejector rod. The utility model has the advantages of long service life and high production efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to a can making equipment field, concretely relates to a two-piece can cutting mechanism. BACKGROUND

[0002] In the first cutting process of the special-shaped two-piece can, the material must be pressed by the material pressing ring with enough pressure outside the cutting edge to be pressed to stretch the material, the traditional process is to rely on spring compression to generate pressure to prevent material flow to complete stretching, and our two-piece can Figure 2 As shown in the special-shaped can S1, a single cylinder cannot be used to achieve this purpose according to the round can, so a spring is used instead, but the spring is prone to fatigue and will break at a certain limit, and each spring does not necessarily maintain the same pressure, which will cause uneven edge pressure of the material pressing ring, so that the material will wrinkle and cause stretching failure. SUMMARY

[0003] In order to overcome the shortcomings of the background art, the utility model provides a two-piece can cutting mechanism with long service life and high production efficiency.

[0004] The utility model adopts the technical scheme: a two-piece can cutting mechanism, which comprises upper and lower oppositely arranged upper and lower die plates, the upper die plate is provided with a fixedly installed upper die seat, the upper die plate is provided with an upper die assembly, and the lower die plate is provided with a lower die assembly; the upper die plate is provided with a plurality of piston mechanisms at the positions of the four corners corresponding to the upper die assembly, and the piston mechanism comprises:

[0005] A cylinder body is arranged in the upper die plate;

[0006] A piston is sealingly and slidingly installed in the cylinder body;

[0007] A top rod is fixedly installed at the lower end of the piston;

[0008] A material pressing ring in contact with the top rod and corresponding to the circumference of the special-shaped can is further arranged below the top rod.

[0009] The upper die seat is provided with a fixedly installed upper cutter die and a fixed seat, the inner wall surface of the material pressing ring is in contact with the outer wall surface of the upper cutter die, the bottom of the fixed seat is provided with a first limiting step, and the upper end of the material pressing ring is provided with a first annular boss in hanging and mounting cooperation with the first limiting step.

[0010] The upper die assembly comprises:

[0011] An upper die core is fixedly installed on the lower surface of the upper die seat;

[0012] An upper material pressing ring is arranged between the upper die core and the upper cutter die;

[0013] The inner wall of the upper end of the upper material pressing ring is provided with a second annular boss, and the periphery of the upper mold core is provided with a second limiting step corresponding to the second annular boss and used for hanging and matching the second annular boss.

[0014] The upper mold assembly further comprises:

[0015] An upper cylinder body arranged in the upper mold plate;

[0016] An upper piston sealingly and slidingly mounted in the upper cylinder body;

[0017] A plurality of upper ejector rods fixedly mounted at the lower end of the piston and penetrating through the upper mold base;

[0018] The lower end of the upper ejector rod is in contact with the upper material pressing ring.

[0019] The lower mold assembly comprises:

[0020] A lower mold base fixedly mounted on the lower mold plate;

[0021] A lower mold core fixedly mounted in the lower mold base;

[0022] A lower material pressing base fixedly mounted on the lower mold base;

[0023] A lower cutter mold movably mounted in the lower mold base and located between the lower mold core and the lower material pressing base.

[0024] The lower mold assembly further comprises:

[0025] A lower cylinder body arranged in the lower mold plate;

[0026] A lower piston sealingly and slidingly mounted in the lower cylinder body;

[0027] A plurality of lower ejector rods fixedly mounted at the upper end of the piston and penetrating through the lower mold base;

[0028] The upper end of the lower ejector rod is in contact with the lower cutter mold.

[0029] The beneficial effects of the utility model are that the four piston mechanisms are used to ensure the edge pressure, the inconvenience caused by the spring is completely changed, all the pistons transmit the force to the material pressing ring through the ejector rods to complete the edge pressing process, the pressure can be adjusted within a certain range, the consistency can be ensured, the service life is greatly improved, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structure schematic view of the cutting mechanism of the two-piece can of the utility model embodiment.

[0031] Figure 2 It is a structure schematic view of the two-piece can of the utility model embodiment. DETAILED DESCRIPTION

[0032] The utility model embodiment is further described below in combination with the drawings:

[0033] As shown in the figure, a two-piece can cutting mechanism comprises an upper die plate 1 and a lower die plate 2 arranged oppositely, the upper die plate 1 is provided with a fixedly installed upper die seat 3, the upper die plate 1 is provided with an upper die assembly, and the lower die plate 2 is provided with a lower die assembly; the upper die plate 1 is provided with a plurality of piston mechanisms at positions corresponding to the four corners of the upper die assembly, and the piston mechanism comprises:

[0034] a cylinder body 4 arranged in the upper die plate 1;

[0035] a piston 5 sealingly and slidingly installed in the cylinder body 4;

[0036] a top rod 6 fixedly installed at the lower end of the piston 5;

[0037] a pressing ring 7 in contact with the piston mechanism and corresponding to the periphery of the special-shaped can is further arranged at the lower position of the top rod 6; the technical solution adopts the pressure of four piston mechanisms to ensure the edge pressure, thereby completely changing the inconvenience caused by the spring, all the pistons transmit the force to the pressing ring through the top rod to complete the edge pressing process, the pressure can be adjusted within a certain range, the consistency can be ensured, the service life is greatly improved, and the production efficiency is improved.

[0038] the upper die seat 3 is provided with a fixedly installed upper cutter 8 and a fixed seat 9, the inner wall surface of the pressing ring 7 is in contact with the outer wall surface of the upper cutter 8, the bottom of the fixed seat 9 is provided with a first limiting step 10, the upper end of the pressing ring 7 is provided with a first annular boss 11 hung and matched with the first limiting step 10, the space formed by the upper cutter and the fixed seat can stably hang the upper end of the pressing ring, and the pressing ring will not be separated and deviated, and the bottom end of the pressing ring corresponds to the periphery of the special-shaped can, when the cutting process is performed, the upper die plate and the lower die plate will move towards each other, the pressing ring tightly presses the periphery of the special-shaped can under the action of the piston mechanism, and then the upper die assembly and the lower die assembly are used for stretching and cutting.

[0039] the upper die assembly comprises:

[0040] an upper die core 12 fixedly installed at the lower surface of the upper die seat 3;

[0041] an upper pressing ring 13 arranged between the upper die core 12 and the upper cutter 8;

[0042] the inner wall of the upper end of the upper pressing ring 13 is provided with a second annular boss 14, and the periphery of the upper die core 12 is provided with a second limiting step 15 corresponding to the second annular boss 14 and hung and matched with the second annular boss 14;

[0043] The upper die assembly further comprises:

[0044] an upper cylinder 16 arranged in the upper die plate 1;

[0045] an upper piston 17 sealingly and slidingly mounted in the upper cylinder 16;

[0046] a plurality of upper ejector rods 18 fixedly mounted at the lower end of the piston 5 and penetrating through the upper die holder 3;

[0047] The lower end of the upper ejector rod 18 is in contact with the upper binder ring 13, the upper binder ring is hung on the upper die core and stably mounted between the upper die core and the upper cutter die, and will not be detached and deviated, the upper piston is moved up and down by air pressure, and the force is transmitted to the upper binder ring through the upper ejector rod.

[0048] The lower die assembly comprises:

[0049] a lower die holder 19 fixedly mounted on the lower die plate 2;

[0050] a lower die core 20 fixedly mounted in the lower die holder 19;

[0051] a lower binder holder 21 fixedly mounted on the lower die holder 19;

[0052] a lower cutter die 22 movably mounted in the lower die holder 19 and located between the lower die core 20 and the lower binder holder 21.

[0053] The lower die assembly further comprises:

[0054] a lower cylinder 23 arranged in the lower die plate 2;

[0055] a lower piston 24 sealingly and slidingly mounted in the lower cylinder 23;

[0056] a plurality of lower ejector rods 25 fixedly mounted at the upper end of the piston 5 and penetrating through the lower die holder 19;

[0057] The upper end of the lower ejector rod 25 is in contact with the lower cutter die 22, the lower die core cooperates with the upper binder ring and the upper die core to complete the stretch cutting of the upper bottom surface of the special-shaped two-piece can, and the working principle of the lower cutter die is the same as that of the upper binder ring, which will not be described here.

[0058] In the description of the utility model, it is necessary to explain that, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0059] In the description of the utility model, it is necessary to explain that, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In addition, in the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0060] Skilled persons should know: although the utility model has been described according to the above specific embodiments, the utility model idea of the utility model is not limited to this utility model, and any modification using the utility model idea will be included in the patent protection range.

Claims

1. A two-piece can opening mechanism characterized by: It includes the upper die plate (1) and the lower die plate (2) which are arranged oppositely, the upper die plate (1) is provided with the fixedly installed upper die seat (3), the upper die plate (1) is provided with the upper die assembly, and the lower die plate (2) is provided with the lower die assembly;The upper die plate (1) is provided with a plurality of piston mechanisms at the positions of the four corners corresponding to the upper die assembly, and the piston mechanism comprises: The cylinder body (4) is arranged in the upper die plate (1); The piston (5) is sealingly and slidingly installed in the cylinder body (4); The ejector rod (6) is fixedly installed at the lower end of the piston (5); The lower position of the ejector rod (6) is also provided with a pressure material ring (7) which is in contact with the ejector rod (6) and corresponds to the peripheral edge of the special-shaped tank.

2. The two-piece can bodymaker according to claim 1 wherein: The upper die seat (3) is provided with the fixedly installed upper cutter die (8) and the fixed seat (9), the inner wall surface of the pressure material ring (7) is in contact with the outer wall surface of the upper cutter die (8), and the bottom of the fixed seat (9) is provided with a first limiting step (10), and the upper end of the pressure material ring (7) is provided with a first annular boss (11) which is hung and matched with the first limiting step (10).

3. The two-piece can bodymaker as defined in claim 2, wherein: The upper die assembly comprises: The upper die core (12) is fixedly installed on the lower surface of the upper die seat (3); The upper pressure material ring (13) is arranged between the upper die core (12) and the upper cutter die (8); The inner wall of the upper end of the upper pressure material ring (13) is provided with a second annular boss (14), and the circumferential edge of the upper die core (12) is provided with a second limiting step (15) corresponding to the second annular boss (14) and matched with the second annular boss (14).

4. The two-piece can bodymaker according to claim 3 wherein: The upper die assembly further comprises: The upper cylinder body (16) is arranged in the upper die plate (1); The upper piston (17) is sealingly and slidingly installed in the upper cylinder body (16); A plurality of upper ejector rods (18) are fixedly installed at the lower end of the piston (5) and pass through the upper die seat (3); The lower end of the upper ejector rod (18) is in contact with the upper pressure material ring (13).

5. The two-piece can bodymaker as defined in claim 1, wherein: The lower die assembly comprises: The lower die seat (19) is fixedly installed on the lower die plate (2); The lower die core (20) is fixedly installed in the lower die seat (19); The lower pressure material seat (21) is fixedly installed on the lower die seat (19); The lower cutter die (22) is movably installed in the lower die seat (19) and located between the lower die core (20) and the lower pressure material seat (21).

6. The two-piece can bodymaker according to claim 5 wherein: The lower die assembly further comprises: The lower cylinder body (23) is arranged in the lower die plate (2); The lower piston (24) is sealingly and slidingly installed in the lower cylinder body (23); A plurality of lower ejector rods (25) are fixedly installed at the upper end of the piston (5) and pass through the lower die seat (19); The upper end of the lower ejector rod (25) is in contact with the lower cutter die (22).

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