Edge folding device for blister packaging box

Abstract

The utility model provides an edge folding device for a blister packaging box, and belongs to the technical field of blister processing. Comprising a base, a bottom male die fixed to the base, a mounting plate longitudinally and slidably connected to the base and a core column located in the middle of the mounting plate, a top female die is longitudinally and slidably connected to the exterior of the core column, a driving unit capable of controlling the top female die to longitudinally move on the core column is arranged between the top female die and the core column, and a heat conduction cavity is formed in the bottom of the core column. A gas guide pipe communicated with the heat conduction cavity is arranged in the center of the core column and connected with a hot gas source, and a plurality of gas dispersing grooves penetrating through the heat conduction cavity and the outer wall face of the core column are formed in the end face of the core column. The bending device has the advantages of being smooth in bending and the like.

Description

Technical Field

[0001] This utility model belongs to the field of blister packaging technology and relates to a folding device for blister packaging boxes. Background Technology

[0002] Vacuum forming can directly create a product, but in some cases it needs to be done in two steps, such as with packaging boxes and lids with folded edges. Especially when the folded edge is also a vacuum forming area, the sheet material needs to be processed into the basic shape of the box before vacuum forming. Then, in the vacuum forming machine, the reinforcing ribs, protrusions, and ring grooves of the packaging box are formed by molds. Most existing folding mechanisms use cold bending and pressing, which utilizes the ductility and plasticity of the material itself to bend and press it under external force. This method is not only prone to creating overstretched areas where the color differs from other areas at the bend, but may also damage the material, resulting in defective products. Utility Model Content

[0003] The purpose of this utility model is to address the aforementioned problems in the existing technology by providing a folding device for blister packaging boxes. The technical problem to be solved by this utility model is how to improve the quality of the folding.

[0004] The purpose of this utility model can be achieved through the following technical solution: A folding device for a blister packaging box, characterized in that it includes a base, a bottom punch fixed on the base, a mounting plate slidably connected to the base longitudinally, and a core column located in the middle of the mounting plate. A top die is slidably connected to the outside of the core column. A driving unit capable of controlling the longitudinal movement of the top die on the core column is provided between the top die and the core column. The bottom of the core column has a heat-conducting cavity. A vent pipe communicating with the heat-conducting cavity is provided at the center of the core column. The vent pipe is connected to a hot air source. Several air-dissipating grooves penetrating the heat-conducting cavity and the outer wall of the core column are opened on the end face of the core column.

[0005] Furthermore, the driving unit is an electromagnetic driving structure, which includes an energized coil disposed on the mounting plate, a permanent magnet block disposed on the upper part of the top die, and a return spring, wherein the return spring abuts against the mounting plate and the top die.

[0006] First, place the sheet blank to be folded on the bottom punch. Then, control the mounting plate and its accessories to move down as a whole. At this time, the energizing coil is energized, and the bottom of the core can rest against the upper surface of the sheet. Finally, de-energize the energizing coil and introduce dry hot air into the heat-conducting cavity. At this time, under the action of the return spring, the top die will descend and squeeze the outer ring of the sheet. Hot air will also enter the top die from the ventilation groove and act on the sheet. Since the hot air overflow must pass through the bending position of the sheet, that is, the gap between the mold wall of the top die and the mold wall of the bottom punch, the sheet can be slowly formed to form a folded edge while being heated and squeezed. In this way, the bending area of ​​the sheet is more gentle, the material is stretched smoothly, and the formed folded edge is smooth and has no obvious color change. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the folding device.

[0008] In the diagram, 1 is the base; 2 is the bottom punch; 3 is the mounting plate; 4 is the core pillar; 5 is the top die; 6 is the heat conduction cavity; 7 is the air guide pipe; 8 is the air dissipation groove; and 9 is the return spring. Detailed Implementation

[0009] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0010] like Figure 1 The blister packaging box folding device shown includes a base 1, a bottom punch 2 fixed on the base 1, a mounting plate 3 slidably connected to the base 1, and a core column 4 located in the middle of the mounting plate 3. A top die 5 is slidably connected to the outside of the core column 4. A drive unit capable of controlling the longitudinal movement of the top die 5 on the core column 4 is provided between the top die 5 and the core column 4. The bottom of the core column 4 has a heat-conducting cavity 6. A vent pipe 7 connected to the heat-conducting cavity is provided in the center of the core column 4. The vent pipe 7 is connected to a hot air source. Several air-dissipating grooves 8 penetrating the heat-conducting cavity 6 and the outer wall of the core column 4 are provided on the end face of the core column 4.

[0011] The drive unit is an electromagnetic drive structure, which includes an energized coil on the mounting plate 3, a permanent magnet block on the upper part of the top die 5, and a reset spring 9. The reset spring 9 rests between the mounting plate 3 and the top die 5.

[0012] First, place the sheet blank to be folded on the bottom punch 2. Then, control the mounting plate 3 and its accessories to move down as a whole. At this time, the energizing coil is energized, and the bottom of the core column 4 can rest against the upper surface of the sheet. Finally, de-energize the energizing coil and introduce dry hot air into the heat-conducting cavity 6. At this time, under the action of the return spring 9, the top die 5 will descend and squeeze the outer ring of the sheet. Hot air will also enter the top die 5 from the ventilation groove and act on the sheet. Since the hot air overflow must pass through the bending position of the sheet, that is, the gap between the mold wall of the top die 5 and the mold wall of the bottom punch 2, the sheet can be slowly formed to form a folded edge while being heated and squeezed. In this way, the bending area of ​​the sheet is more gentle, the material is stretched smoothly, and the formed folded edge is smooth and has no obvious color change.

[0013] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A folding device for a blister packaging box, characterized in that, The device includes a base (1), a bottom punch (2) fixed on the base (1), a mounting plate (3) slidably connected to the base (1) longitudinally, and a core column (4) located in the middle of the mounting plate (3). A top die (5) is slidably connected to the outside of the core column (4). A drive unit capable of controlling the longitudinal movement of the top die (5) on the core column (4) is provided between the top die (5) and the core column (4). The bottom of the core column (4) has a heat-conducting cavity (6). A gas pipe (7) communicating with the heat-conducting cavity is provided in the center of the core column (4). The gas pipe (7) is connected to a hot air source. Several air-dissipating grooves (8) penetrating the heat-conducting cavity (6) and the outer wall of the core column (4) are provided on the end face of the core column (4).

2. The folding device for a blister packaging box according to claim 1, characterized in that, The driving unit is an electromagnetic driving structure, which includes an energized coil on the mounting plate (3), a permanent magnet block on the upper part of the top die (5), and a reset spring (9). The reset spring (9) abuts against the mounting plate (3) and the top die (5).

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