EVA foam punching device for packaging

Abstract

The utility model discloses an EVA foam blanking device for packaging, comprising a stamping lower die and a stamping upper die arranged above the stamping lower die, the stamping upper die moves vertically up and down relative to the stamping lower die, the stamping lower die is provided with a cylindrical punching hole and a truncated cone-shaped blanking hole, the blanking hole is arranged below the punching hole, the blanking hole has a downward large head end and an upward small head end, the diameter of the small head end is equal to the diameter of the punching hole, the upper end of the punching hole is connected to the outside world, the lower end is connected to the blanking hole, the lower end of the blanking hole is connected to the outside world, and the upper end is connected to the punching hole; the stamping upper die is provided with a punch matched with the punching hole, the height of the punch is greater than the depth of the punching hole. The blanking device has the characteristics of no waste adhesion and smooth blanking, perfect overall function and strong practicality.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, and more specifically, to an EVA foam punching device for packaging. Background Art

[0002] After the thin EVA foam is punched, waste is easily left on the punch due to electrostatic adsorption, which is inconvenient to clean manually and also affects the next punching, resulting in poor overall effect. Accordingly, the utility model provides an EVA foam punching device for packaging. Utility Model Content

[0003] The utility model aims to overcome the above-mentioned deficiencies in the prior art and to provide an EVA foam punching device for packaging, which has the characteristics of no adhesion of waste materials and smooth punching.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows: the utility model involves an EVA foam blanking device for packaging, including a stamping lower die and a stamping upper die arranged above the stamping lower die, the stamping upper die moves vertically up and down relative to the stamping lower die, the stamping lower die is provided with a cylindrical punching hole and a truncated cone-shaped blanking hole, the blanking hole is arranged below the punching hole, the blanking hole has a large head end facing downward and a small head end facing upward, the diameter of the small head end is equal to the diameter of the punching hole, the upper end of the punching hole is connected to the outside world, and the lower end is connected to the blanking hole, the lower end of the blanking hole is connected to the outside world, and the upper end is connected to the punching hole; the stamping upper die is provided with a punch matching the punching hole, and the height of the punch is greater than the depth of the punching hole.

[0005] The utility model is further configured as follows: an elastic pull ring is provided on the hole wall of the blanking hole, an elastic pull piece is arranged on the inner wall of the elastic pull ring, and an end of the elastic pull piece not connected to the elastic pull ring is against the outer wall of the punch.

[0006] The utility model is further configured as follows: an annular groove is opened on the hole wall of the blanking hole, the elastic pull ring has an annular protrusion matching the annular groove, and the annular protrusion is embedded in the annular groove.

[0007] The utility model is further configured as follows: the elastic paddle and the elastic paddle ring are an integrated structure.

[0008] The utility model is further configured that: the elastic paddle and the elastic paddle ring are both made of rubber material.

[0009] The utility model is further configured as follows: a guide hole is provided on the stamping lower die, and a guide column having one end connected to the stamping upper die is slidably connected in the guide hole.

[0010] The utility model is further configured as follows: the punching holes are arranged on the stamping lower die in a rectangular array.

[0011] In summary, the utility model has the following beneficial effects:

[0012] 1. The waste material that is punched out remains at the end of the punch. Because the height of the punch is greater than the depth of the punching, the waste material in the completed mold closing state will be located in the blanking hole, without the constraints of the hole wall around it, and can fall off naturally under gravity.

[0013] 2. If the waste material remains at the end of the punch due to electrostatic adsorption, it can be peeled off by a flexible elastic pick to prevent it from affecting the next punching when the punch is reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a partial structural schematic diagram of the utility model;

[0016] Figure 3 It is a partial structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, rather than limiting the patent requirements of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0018] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0019] Example 1

[0020] See also Figures 1 to 3 As shown, the present embodiment involves an EVA foam blanking device for packaging, comprising a stamping lower die 1 and a stamping upper die 2 arranged above the stamping lower die, the stamping upper die 2 moves vertically up and down relative to the stamping lower die 1, the stamping lower die 1 is provided with a cylindrical punching hole 3 and a truncated cone-shaped blanking hole 4, the blanking hole 4 is arranged below the punching hole 3, the blanking hole 4 has a large head end facing downward and a small head end facing upward, the diameter of the small head end is equal to the diameter of the punching hole 3, the upper end of the punching hole 3 is connected to the outside world, and the lower end is connected to the blanking hole 4, the lower end of the blanking hole 4 is connected to the outside world, and the upper end is connected to the punching hole 3; the stamping upper die 2 is provided with a punch 5 matching the punching hole 3, and the height of the punch 5 is greater than the depth of the punching hole 3.

[0021] Furthermore, a guide hole (not shown) is provided on the stamping lower die 1, and a guide column (not shown) having one end connected to the stamping upper die 2 is slidably connected in the guide hole.

[0022] Furthermore, the punching holes 3 are arranged in a rectangular array on the stamping lower die 1 .

[0023] In this embodiment, when the punching device is closed, the EVA foam located between the two is punched, and the punch 5 is punched into the punch hole 3. The shear force causes the waste to be punched down and remain at the end of the punch 5 until the punch 5 moves down to the blanking hole 4 with the waste. Because the height of the punch 5 is greater than the depth of the punch hole 3 and the diameter of the blanking hole 4 except the small head end is greater than the punch hole 3, the waste in this state is not bound by the hole wall around it and can fall off naturally due to gravity, thereby realizing automatic waste discharge.

[0024] Among them, the guide hole cooperates with the setting of the guide column to play a sliding guiding role.

[0025] Example 2

[0026] See also Figures 1 to 3 As shown, the present embodiment involves an EVA foam blanking device for packaging, which is further configured on the basis of Embodiment 1, that an elastic ring 6 is provided on the hole wall of the blanking hole 4, and an elastic pick 7 is arranged on the inner wall of the elastic ring 6, and the end of the elastic pick 7 not connected to the elastic ring 6 is against the outer wall of the punch 5.

[0027] Furthermore, an annular groove 41 is formed on the hole wall of the blanking hole 4 , and the elastic pull ring 6 has an annular protrusion 61 matching the annular groove, and the annular protrusion 61 is embedded in the annular groove 41 .

[0028] Furthermore, the elastic paddle 7 and the elastic paddle ring 6 are an integrated structure.

[0029] Furthermore, the elastic paddle 7 and the elastic paddle ring 6 are both made of rubber material.

[0030] In this embodiment, an elastic pick 7 is arranged on the elastic pick ring 6 so that the end of the punch 5 in the mold closing state moves down to below the elastic pick 7 with the waste material. At this time, the elastic pick 7 rests on the outer wall of the punch 5. When the punch 5 is reset, the elastic pick 7 will peel off the waste material adsorbed on the punch 5 to prevent it from moving up again with the punch 5.

[0031] The annular groove 41 cooperates with the annular protrusion 61 to be used for the elastic pull ring 6 to be installed and disassembled easily, and is convenient for replacement and maintenance.

[0032] The utility model relates to an EVA foam punching device for packaging. The punching device can leave the punched waste material at the end of the punch. Since the height of the punch is greater than the depth of the punching hole, the waste material in the mold closing state is located in the blanking hole, without being bound by the hole wall around it, and can fall off naturally due to gravity. If the waste material remains at the end of the punch due to electrostatic adsorption, it can be peeled off by a flexible elastic pick to prevent the waste material from affecting the next punching as the punch is reset. The overall function is perfect and the practicability is strong.

[0033] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationship are based on the orientation or positional relationship actually shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0034] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. An EVA foam punching device for packaging, comprising a punching lower die and a punching upper die arranged above the punching lower die, wherein the punching upper die moves vertically up and down relative to the punching lower die, and is characterized in that: The stamping lower die is provided with a cylindrical punching hole and a truncated cone-shaped blanking hole, the blanking hole is arranged below the punching hole, the blanking hole has a large head end facing downward and a small head end facing upward, the diameter of the small head end is equal to the diameter of the punching hole, the upper end of the punching hole is connected to the outside world, and the lower end is connected to the blanking hole, the lower end of the blanking hole is connected to the outside world, and the upper end is connected to the punching hole; the stamping upper die is provided with a punch matching the punching hole, and the height of the punch is greater than the depth of the punching hole; an elastic pick is provided on the hole wall of the blanking hole, and an elastic pick is arranged on the inner wall of the elastic pick, and the end of the elastic pick that is not connected to the elastic pick is against the outer wall of the punch.

2. The EVA foam punching device for packaging according to claim 1, characterized in that: An annular groove is formed on the hole wall of the blanking hole, and the elastic pull ring has an annular protrusion matching the annular groove, and the annular protrusion is embedded in the annular groove.

3. The EVA foam punching device for packaging according to claim 2, characterized in that: The elastic paddle and the elastic paddle ring are an integrated structure.

4. The EVA foam punching device for packaging according to claim 3, characterized in that: The elastic paddle and the elastic paddle ring are both made of rubber material.

5. The EVA foam punching device for packaging according to any one of claims 1 to 4, characterized in that: The stamping lower die is provided with a guide hole, and a guide column having one end connected to the stamping upper die is slidably connected in the guide hole.

6. The EVA foam punching device for packaging according to claim 1, characterized in that: The punching holes are arranged in a rectangular array on the punching lower die.

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