Positioning mechanism of two-piece can trimming device

Abstract

The utility model discloses a positioning mechanism of a two-piece can trimming device, which relates to the field of can making equipment, and comprises an upper base and a lower base, an upper cutter is arranged on the upper base, a lower cutter is arranged on the lower base, the upper base is hollow, a piston component for positioning an empty can is arranged in the upper base, and the lower cutter is arranged on the lower base. The lower base is hollow, and a lower mold opposite to the piston assembly is arranged in the lower base. The piston assembly comprises a cylinder body, a piston and a flexible pressing block installed at the bottom end of the piston. The utility model has the advantages of long service life and good practicability.

Description

TECHNICAL FIELD

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

[0002] Two-piece cans have two advantages compared with three-piece cans: 1. The inner wall of the can is uniform, improving the hygiene quality of the contents; 2. The inner wall of the can has no joints, completely eliminating the possibility of leakage and ensuring the safety of the contents. The quality of two-piece cans is not only related to the material of the two-piece cans, but also directly related to the design of the mold; the last process of two-piece cans is trimming, and the empty can is sent to the trimming station by a mechanical claw. The empty can must be positioned by a positioning mechanism at the bottom, but the positioning mechanism in the prior art generally uses metal material to make a pressing block to clamp the empty can, which is very heavy. The upper and lower pressing blocks will have a great impact on the cylinder during extrusion, which shortens the service life of the cylinder. Moreover, the upper pressing block is connected with the small piston by a screw, and the screw is easy to break and fall, which directly affects the production efficiency and safety. SUMMARY

[0003] In order to overcome the shortcomings of the background art, the utility model provides a positioning mechanism of two-piece can trimming device with long service life and good practicability.

[0004] The technical scheme adopted by the utility model is: a positioning mechanism of two-piece can trimming device, which comprises an upper base and a lower base, an upper cutter is arranged on the upper base, and a lower cutter is arranged on the lower base, the upper base is hollow and internally provided with a piston assembly for positioning the empty can, the lower base is hollow and internally provided with a lower mold opposite to the piston assembly, the piston assembly comprises a cylinder, a piston, and a flexible pressing block mounted at the bottom end of the piston.

[0005] The flexible pressing block is made of PU block.

[0006] The upper base is provided with a resiliently mounted edge pressing assembly around the upper cutter.

[0007] The edge pressing assembly comprises:

[0008] A pressing plate is slidably mounted on the outer surface of the upper cutter.

[0009] A plurality of elastic members are elastically installed between the edge pressing plate and the upper base.

[0010] The pressing plate is provided with a plurality of mounting columns for mounting the elastic members, and the upper base is provided with a plurality of mounting grooves for mounting the elastic members.

[0011] The upper base is provided with a plurality of limiting bolts connecting the pressing plate and the upper base, the lower end of the limiting bolt is in threaded connection with the pressing plate, the upper end of the limiting bolt is provided with a screw head, the upper base is provided with a plurality of sliding grooves for sliding installation of the screw head, and the bottom of the sliding groove is provided with a limiting step for preventing the screw head from coming out.

[0012] The outer surface of the upper cutter is provided with a guide ring in sliding connection with the pressing plate.

[0013] The beneficial effects of the present application are that the flexible pressing block is installed at the bottom end of the piston, the impact force of the piston on the cylinder body is reduced, the deformation of the bottom of the can body is eliminated when the flexible pressing block contacts the bottom of the empty can, the quality of the cut edge caused by the displacement of the can body is prevented, the production efficiency and the qualified rate are greatly improved, the advantages of light weight, firm installation and good wear resistance are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the positioning mechanism of the two-piece can edge cutting device. DETAILED DESCRIPTION

[0015] The embodiments of the present application will be further described below with reference to the drawings:

[0016] As shown in the drawings, a positioning mechanism of a two-piece can edge cutting device comprises an upper base 1 and a lower base 2, the upper base 1 is provided with an upper cutter 3, the lower base 2 is provided with a lower cutter 4, the upper base 1 is hollow and internally provided with a piston assembly for positioning the empty can, the lower base 2 is hollow and internally provided with a lower mold 5 opposite to the piston assembly, the piston assembly comprises a cylinder body 6, a piston 7 and a flexible pressing block 8 installed at the bottom end of the piston; the flexible pressing block is installed at the bottom end of the piston, the impact force of the piston on the cylinder body is reduced, the deformation of the bottom of the can body is eliminated when the flexible pressing block contacts the bottom of the empty can, the quality of the cut edge caused by the displacement of the can body is prevented, the production efficiency and the qualified rate are greatly improved, the advantages of light weight, firm installation and good wear resistance are achieved.

[0017] The flexible pressing block 8 is made of PU block, the PU block has elasticity and can be directly pressed into the bottom end of the piston, and the structure is as shown in Figure 1 .

[0018] The upper base 1 is provided with an elastically mounted edge pressing assembly around the upper cutter 3, the edge pressing assembly presses the periphery of the empty can, the cutting effect of the edge cutting is ensured, and the qualified rate is improved.

[0019] The edge pressing assembly comprises:

[0020] A pressing plate 9 is slidingly installed on the outer surface of the upper cutter 3.

[0021] a plurality of elastic members 10 are elastically arranged between the pressing plate 9 and the upper base 1;

[0022] The pressing plate 9 is provided with a plurality of mounting columns 11 for mounting the elastic members 10, and the upper base 1 is provided with a plurality of mounting grooves 12 for mounting the elastic members 10, the elastic members provide elastic force for the pressing plate, so that the pressing plate provides flexible force when contacting with the empty can, the structure of the mounting grooves and the mounting columns can ensure stable mounting of the elastic members, and the elastic members are springs.

[0023] A plurality of limiting bolts 13 are arranged between the pressing plate 9 and the upper base 1 and connect the pressing plate 9 and the upper base 1, the lower end of the limiting bolt 13 is in threaded cooperation with the pressing plate 9, the upper end of the limiting bolt 13 is provided with a screw head 14, the upper base 1 is provided with a plurality of sliding grooves 15 for slidingly mounting the screw head 14, and the bottom of the sliding groove 15 is provided with a limiting step 16 for preventing the screw head 14 from coming out, and the limiting bolt can limit the movement stroke of the pressing plate and prevent the pressing plate from being separated from the upper base.

[0024] The outer surface of the upper cutter 3 is provided with a guide ring 17 in sliding cooperation with the pressing plate 9, and the guide ring provides a guide function for the pressing plate.

[0025] In the description of the present application, it should be explained that the terms "center", "longitudinal", "transverse", "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, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation of the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present application, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connecting" and "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0027] Skilled technicians should know: although the utility model has been described in 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 positioning mechanism for a two-piece can trimmer, characterized by: It includes upper base (1) and lower base (2), be equipped with upper cutter (3) on the upper base (1) and be equipped with lower cutter (4) on the lower base (2), the upper base (1) is hollowly arranged and is equipped with piston assembly for positioning empty can in inside, the lower base (2) is hollowly arranged and is equipped with lower mould (5) opposite piston assembly in inside, the piston assembly includes cylinder body (6), piston (7) and flexible pressing block (8) installed in the bottom end of the piston.

2. The positioning mechanism for a two-piece can body flanger as set forth in claim 1, wherein: The flexible pressing block (8) adopts PU block.

3. The positioning mechanism for a two-piece can body flanger apparatus as defined in claim 1 wherein: The upper base (1) is equipped with elastically mounted edge pressing assembly on the periphery of upper cutter (3).

4. The positioning mechanism for a two-piece can body flanger apparatus as defined in claim 3 wherein: The edge pressing assembly includes: Pressing plate (9) is slidingly installed on the outer surface of the upper cutter (3); Several elastic members (10) are elastically installed between the edge and the upper base (1). The pressing plate (9) is provided with several mounting columns (11) for mounting elastic members (10), and the upper base (1) is provided with several mounting grooves (12) for mounting elastic members (10).

5. The positioning mechanism for a two-piece can body flanger apparatus as defined in claim 4 wherein: Several connecting bolts (13) are provided between the pressing plate (9) and the upper base (1), the lower end of the connecting bolt (13) is threadedly connected with the pressing plate (9), the upper end of the connecting bolt (13) is provided with a screw head (14), the upper base (1) is provided with several sliding grooves (15) for slidingly mounting the screw head (14), and the bottom of the sliding groove (15) is provided with a limiting step (16) for preventing the screw head (14) from coming out.

6. The positioning mechanism for a two-piece can body flanger apparatus as defined in claim 5 wherein: The outer surface of the upper cutter (3) is provided with a guide ring (17) slidingly connected with the pressing plate (9).

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