Easily-opened cover machining die

Abstract

The utility model provides an easy-to-open cover machining die which is used for reducing the forming process of an easy-to-open cover and improving the working efficiency. The pre-forming die is characterized by further comprising a pre-forming upper die arranged on the upper die plate; the pre-forming lower die is arranged on the lower die plate; the pressing die is arranged on the bottom surface of the pre-forming upper die; the supporting mold is arranged on the top surface of the pre-forming lower mold; the bubble pumping female die is arranged on the pre-forming upper die; the bubble extraction male die is arranged on the supporting die, and part of the bubble extraction male die is located above the supporting die; and the through hole is formed in the pressing die and matched with the bubble pumping female die. When the pre-forming upper die is matched with the pre-forming lower die, the pressing die is matched with the supporting die to press the cover face of the cover body, meanwhile, the bubble pumping female die is matched with the bubble pumping male die, bubble pumping is carried out on the easy-open cover, pre-forming and secondary bubble pumping on the periphery of the cover body are completed in one set of die at the same time, the machining procedures of the easy-open cover are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal can cover processing, in particular to an easy-open cover processing mould. Background Art

[0002] Easy-open end is a kind of cover which is pre-engraved with a certain depth of score line and riveted with a pull ring, and can be safely torn open along the score line when opened. It is widely used in various canned food, beverages and other products. The molding of easy-open end generally requires multiple processes such as punching the cover - pre-edge protection (pre-forming around the can cover) - blistering - secondary blistering - scoring - expansion ring - riveting pull ring - edge protection, etc., and multiple processing steps make it difficult to improve production efficiency. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the utility model provides an easy-open cover processing mold, which is used to reduce the easy-open cover molding process and improve work efficiency.

[0004] The technical solution adopted by the utility model is as follows:

[0005] The easy-open end processing mold includes an upper mold plate and a lower mold plate, and also includes:

[0006] A preforming upper mold is arranged on the upper mold plate;

[0007] A preforming lower mold is arranged on the lower mold plate;

[0008] A die is provided to set the bottom surface of the preformed upper die;

[0009] A supporting mold, arranged on the top surface of the preforming lower mold;

[0010] The bubble extraction concave mold is arranged on the preforming upper mold;

[0011] A bubble pumping convex mold is arranged on the supporting mold, wherein the bubble pumping convex mold part is located above the supporting mold;

[0012] A through hole is arranged on the pressing die, and the through hole cooperates with the bubble extraction concave die.

[0013] A first elastic reset piece is arranged between the pressing die and the upper preforming die, and a second elastic reset piece is arranged between the lower preforming die and the lower template.

[0014] The No. 1 elastic reset member is arranged in the circumference of the die, and the preforming upper die is installed with a limiting sliding sleeve for cooperating with the center of the die.

[0015] The bottom surface of the die is provided with an annular groove.

[0016] The materials of the bubble extraction concave mold and the bubble extraction convex mold are hard alloys. The support mold is also provided with an alloy sleeve for cooperating with the bubble extraction convex mold. The diameter of the alloy sleeve is greater than the diameter of the bubble extraction concave mold.

[0017] A cushion block is arranged below the bubble pumping convex mold.

[0018] A positioning pin is arranged between the upper mold plate and the preforming upper mold.

[0019] The beneficial effects of the utility model are:

[0020] When the preforming upper die cooperates with the preforming lower die, the pressing die cooperates with the supporting die to press the cover surface of the cover body, and at the same time, the bubble extraction concave die cooperates with the bubble extraction convex die to extract bubbles from the easy-open cover. The preforming and secondary bubble extraction around the cover body are completed simultaneously in a set of molds, thereby reducing the processing procedures of the easy-open cover and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional schematic diagram of the utility model.

[0022] Figure 2 The utility model is a cross-sectional schematic diagram of the floating structure of the pressing die and the preforming lower die.

[0023] Figure 3 It is a cross-sectional schematic diagram of the upper mold of the utility model.

[0024] Figure 4 It is a schematic diagram of the compression mold of the utility model.

[0025] Upper template 1, lower template 2, preforming upper mold 3, preforming lower mold 4, pressing mold 5, supporting mold 6, bubble extraction concave mold 7, bubble extraction convex mold 8, through hole 9, No. 1 elastic reset part 10, No. 2 elastic reset part 11, limiting sliding sleeve 12, annular groove 13, alloy sleeve 14, cushion block 15, and locating pin 16. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0027] In the embodiment, Figure 1 , Figure 2 , Figure 4 As shown, the easy-open end processing mold includes an upper mold plate 1 and a lower mold plate 2, and also includes:

[0028] A preforming upper mold 3 is arranged on the upper mold plate 1;

[0029] A preforming lower mold 4 is arranged on the lower mold plate 2;

[0030] A pressing die 5 is provided on the bottom surface of the preforming upper die 3;

[0031] A supporting mold 6 is arranged on the top surface of the preforming lower mold 4;

[0032] The bubble extraction concave mold 7 is arranged on the preforming upper mold 3;

[0033] The bubble pumping convex mold 8 is arranged on the supporting mold 6, and the bubble pumping convex mold 8 is partially located above the supporting mold 6;

[0034] A through hole 9 is provided on the pressing die 5 , and the through hole 9 cooperates with the bubble extraction concave die 7 .

[0035] When the preforming upper mold 3 cooperates with the preforming lower mold 4, the pressing mold 5 cooperates with the supporting mold 6 to press the cover surface of the cover body, and at the same time, the bubble extraction concave mold 7 cooperates with the bubble extraction convex mold 8 to extract bubbles from the easy-open cover. The preforming and secondary bubble extraction around the cover body are completed simultaneously in a set of molds, which reduces the processing procedures of the easy-open cover and improves production efficiency.

[0036] In the embodiment, Figure 2 , Figure 3 As shown, a first elastic reset member 10 is provided between the pressing die 5 and the preforming upper die 3, and a second elastic reset member 11 is provided between the preforming lower die 4 and the lower die plate 2. Both the first elastic reset member 10 and the second elastic reset member 11 are springs, and the pressing die 5 and the preforming lower die 4 can float to prevent the surface of the easy-open cover from being damaged due to excessive force after the molds are matched.

[0037] In the embodiment, Figure 1 , Figure 2 As shown, the first elastic reset member 10 is arranged in the circumference of the die 5, and the preforming upper die 3 is provided with a limiting sliding sleeve 12 for cooperating with the center of the die 5. Allowing the die 5 to float up and down within a small range does not guarantee the linearity of the floating.

[0038] In the embodiment, Figure 4 As shown, the bottom surface of the die 5 is provided with an annular groove 13. The groove surface of the annular groove 13 has no machining accuracy requirement, which reduces the machining difficulty of the die 5.

[0039] In the embodiment, Figure 1 As shown, the materials of the bubble extraction die 7 and the bubble extraction convex die 8 are hard alloy, and the support die 6 is also provided with an alloy sleeve 14 for cooperating with the bubble extraction convex die 8, and the diameter of the alloy sleeve 14 is larger than the diameter of the bubble extraction die 17. The materials of the bubble extraction die 7 and the bubble extraction convex die 8 are hard alloy, which ensures the service life of the bubble extraction die, and at the same time, when the bubble extraction die 7 descends, it contacts with the alloy sleeve 14, and the upper surface of the support die 6 will not be damaged.

[0040] In the embodiment, Figure 1 As shown, a cushion block 15 is provided below the bubble pumping convex mold 8. Due to the processing error of the support mold 6, the height of the bubble pumping convex mold 8 can be adjusted by the cushion block 15 to ensure the bubble pumping accuracy of the easy-open cover.

[0041] In the embodiment, Figure 3As shown, a positioning pin 16 is provided between the upper template 1 and the preforming upper mold 3. Similarly, a positioning pin is also provided between the lower template 2 and the preforming lower mold 4 to ensure the matching accuracy of the template and the preforming mold, and then to ensure the matching accuracy of the upper and lower molds.

[0042] Obviously, the above embodiments of the present invention are merely examples for illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to provide all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still fall within the scope of protection of the present invention.

Claims

1. An easy-open end processing mold, comprising an upper mold plate (1) and a lower mold plate (2), characterized in that: Also includes: A preforming upper mold (3) is arranged on the upper mold plate (1); A preforming lower mold (4) is arranged on the lower mold plate (2); A pressing die (5) is provided on the bottom surface of the preforming upper die (3); A supporting mold (6) is arranged on the top surface of the preforming lower mold (4); A bubble extraction concave mold (7) is arranged on the preforming upper mold (3); A bubble extraction convex mold (8) is arranged on the supporting mold (6), wherein a portion of the bubble extraction convex mold (8) is located above the supporting mold (6); A through hole (9) is provided on the pressing die (5), and the through hole (9) cooperates with the bubble extraction concave die (7).

2. The easy-open end processing mold according to claim 1, characterized in that: A first elastic reset member (10) is provided between the pressing die (5) and the preforming upper die (3), and a second elastic reset member (11) is provided between the preforming lower die (4) and the lower die plate (2).

3. The easy-open end processing mold according to claim 2, characterized in that: The first elastic reset member (10) is arranged in the circumferential direction of the die (5), and the preforming upper die (3) is provided with a limiting sliding sleeve (12) for cooperating with the center of the die (5).

4. The easy-open end processing mold according to claim 1, characterized in that: The bottom surface of the pressing die (5) is provided with an annular groove (13).

5. The easy-open end processing mold according to claim 1, characterized in that: The materials of the bubble extraction die (7) and the bubble extraction convex die (8) are hard alloys, and the support die (6) is further provided with an alloy sleeve (14) for cooperating with the bubble extraction convex die (8), wherein the diameter of the alloy sleeve (14) is greater than the diameter of the bubble extraction die (7).

6. The easy-open end processing mold according to claim 1, characterized in that: A cushion block (15) is provided below the bubble extraction convex mold (8).

7. The easy-open end processing mold according to claim 1, characterized in that: A positioning pin (16) is provided between the upper mold plate (1) and the preforming upper mold (3).

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