Spring plate mould of plastic-adsorption packing box fastener
A packaging box and shrapnel technology, applied in the field of shrapnel molds, can solve problems such as damage to fasteners and difficult demoulding
Inactive Publication Date: 2013-12-11
SUZHOU HUARI JINLING MACHINERY
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Problems solved by technology
In the existing production process, an inner mold with a fixed shape and an outer mold are used. After the outer mold is closed, compressed air is blown into the plastic sheet to cover the inner mold. After the product is formed, the outer mold is opened and the machine clamps it. The molded fastener is demolded, but because the neck of the fastener is narrow, it is not easy to demould, or the fastener is damaged during demoulding, and the ejector structure is usually used to assist the demoulding
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[0010] The preferred technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0011] Such as figure 1 As shown, a shrapnel mold for a fastener of a plastic packaging box includes an outer mold 1, an inner mold 2 and a fixing bracket 8, and the inner mold 2 includes a left arc surface 3, a right arc surface 4 and a middle annulus 5 , the left arc surface 3 and the right arc surface 4 are flexibly connected to both sides of the middle ring surface 5 through the flange 6 respectively, the flange 6 is inscribed on the inner surface of the middle ring surface 5, and on the inner surface of the middle ring surface 5 A V-shaped shrapnel 7 is fixed on the top, and the two free ends of the V-shaped shrapnel 7 are respectively hinged at the center of the inner side of the left arc surface 3 and the right arc surface 4.
[0012] The width of the flange 6 is less than or equal to half of the width of the middle annulu...
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The invention discloses a spring plate mould of a plastic-adsorption packing box fastener. The spring plate mould comprises an outer mould, an inner mould and a fixed bracket, wherein the inner mould comprises a left arc surface, a right arc surface and a middle annular surface; the left arc surface and the right arc surface are respectively and movably connected with two sides of the middle annular surface through flanges, and the flanges are internally tangent to the inner side surface of the middle annular surface; a V-shaped spring plate is fixed on the inner side surface of the middle annular surface; two free ends of the V-shaped spring plate are respectively hinged to the centers of the inner sides of the left arc surface and the right arc surface. Compared with the prior art, the spring plate mould of the plastic-adsorption packing box fastener has the benefits that the inner mould comprises the left arc surface, the right arc surface of the middle annular surface, during demoulding, the left arc surface and the right arc surface can be gathered towards the interior of the middle annular surface under the action of the extrusion force, and the formed fastener can realize demoulding easily, and when the extrusion force disappears, the left arc surface and the right arc surface are recovered under the elastic force of the V-shaped spring plate, the production is performed continuously, and convenience and practicability are realized.
Description
technical field [0001] The invention relates to a shrapnel mold for a fastener of a blister packaging box. Background technique [0002] At the opening of the blister packaging box, there is usually a movable fastener that fits up and down to facilitate opening and fastening. This fastener includes a raised block and a narrow neck. In the existing production process, an inner mold with a fixed shape and an outer mold are used. After the outer mold is closed, compressed air is blown into the plastic sheet to cover the inner mold. After the product is formed, the outer mold is opened and the machine clamps it. The formed fastener is demoulded, but because the neck of the fastener is narrow, it is not easy to demould, or the fastener is damaged during demoulding, and the ejector structure is usually used to assist the demoulding. Contents of the invention [0003] The above-mentioned problems to be solved by the present invention are aimed at the deficiencies of the above-me...
Claims
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Inventor 向延海
Owner SUZHOU HUARI JINLING MACHINERY