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CN-224210383-U - Manufacturing die of paper-plastic box cover

CN224210383UCN 224210383 UCN224210383 UCN 224210383UCN-224210383-U

Abstract

The utility model relates to a manufacturing die for a paper-plastic box cover, and belongs to the technical field of dies. The device comprises a top plate, a movable template, a fixed template, a connecting plate and a bottom plate which are sequentially arranged, wherein a molding part is arranged in the fixed template, a molding cavity is formed at the joint of the molding part and the movable template, a plurality of feeding flow passages are arranged in the connecting plate, the feeding flow passages upwards penetrate through the molding part and extend to the bottom of the molding cavity, the feeding flow passages are arranged at the inner edge of the molding part, spray heads are arranged in the feeding flow passages, needle valves which reciprocate are arranged in the spray heads, a plurality of telescopic cylinders which are fixedly connected are arranged in the bottom plate, and the needle valves are fixedly connected with the tops of the telescopic cylinders; in this scheme, the plastic melt is connected with the edge of cardboard, and the melt forms the plastics ring limit in the edge of cardboard after the cooling shaping, and plastics ring limit is used for being connected with the box body of below, because plastics material has characteristics such as high toughness, high elasticity, after lid and box body block, is difficult for receiving extrusion deformation, improves the leakproofness of paper plastic lid.

Inventors

  • ZHANG CHENBO

Assignees

  • 浙江台州国光模具塑料有限公司

Dates

Publication Date
20260508
Application Date
20250519

Claims (7)

  1. 1. The utility model provides a manufacturing mould of lid is moulded to paper, includes roof (1), movable mould board (2), fixed mould board (3), connecting plate (4) and bottom plate (5) of arranging in proper order, fixed mould board (3) inside is equipped with shaping piece (6), the junction of shaping piece (6) and movable mould board (2) is equipped with shaping chamber (6 a), a serial communication port, inside a plurality of feeding runner (7) that are equipped with of connecting plate (4), feeding runner (7) upwards pass shaping piece (6) and extend to the bottom of shaping chamber (6 a), feeding runner (7) set up the inside edge of shaping piece (6), feeding runner (7) inside all is equipped with shower nozzle (7 a), shower nozzle (7 a) inside is equipped with reciprocating motion's needle valve (7 b), bottom plate (5) inside is equipped with a plurality of telescopic cylinder (8) that link firmly, the bottom of needle valve (7 b) links firmly with the top of telescopic cylinder (8).
  2. 2. The manufacturing die of the paper-plastic box cover according to claim 1, wherein a downward concave annular groove (6 b) is formed at the top edge of the forming piece (6), a plurality of inward concave clamping grooves (6 c) are formed in the outer side wall of the forming piece (6), and the annular groove (6 b) and the clamping grooves (6 c) are connected with the forming cavity (6 a).
  3. 3. A mould for manufacturing a paper-plastic box cover according to claim 2, characterized in that four feeding flow passages (7) are arranged in the forming part (6), and the same spray heads (7 a) are arranged in the feeding flow passages (7).
  4. 4. The manufacturing die of the paper-plastic box cover according to claim 1, wherein a plurality of first air passages (5 a) and second air passages (5 b) are arranged in the bottom plate (5), the first air passages (5 a) are connected with the top of the telescopic air cylinder (8), the second air passages (5 b) are connected with the bottom of the telescopic air cylinder (8), and a piston (8 a) capable of moving in a reciprocating mode is arranged on the top of the telescopic air cylinder (8).
  5. 5. The manufacturing die of the paper-plastic box cover according to claim 1, wherein a plurality of air suction channels (4 b) are arranged in the forming piece (6), air suction holes (4 a) are formed in the outer side wall of the connecting plate (4), one end of each air suction channel (4 b) extends to the top of the forming piece (6), and the other end of each air suction channel (4 b) extends downwards and is connected with each air suction hole (4 a).
  6. 6. The manufacturing die of the paper-plastic box cover according to claim 1, wherein an air blowing channel (1 b) is arranged in the movable die plate (2), an air inlet hole (1 a) is formed in the side wall of the top plate (1), the bottom of the air blowing channel (1 b) is connected with a forming cavity (6 a), and the top of the air blowing channel (1 b) is connected with the air inlet hole (1 a).
  7. 7. The manufacturing die of the paper-plastic box cover according to claim 1, wherein a hot runner assembly (9) is arranged inside the connecting plate (4), and the bottom of the spray head (7 a) is connected with the hot runner assembly (9).

Description

Manufacturing die of paper-plastic box cover Technical Field The utility model belongs to the technical field of dies, and relates to a manufacturing die of a paper-plastic box cover. Background With the continuous development of society, people pay more and more attention to environmental protection, and most modern people choose to purchase goods with the advantages of environmental protection, no pollution, reuse and the like. The paper-plastic product is formed by compression molding paper pulp made of recycled paper board and newsprint, so that the paper-plastic product has the characteristics of environmental protection, no pollution and reutilization, and is one of the popular packaging materials at present. However, paper-plastic products made of single paper pulp raw materials have some defects, and because the paper pulp products are poor in toughness and easy to deform, when the paper-plastic products are applied to take-away packages, the connection between the box body and the box cover is not firm, the sealing performance is poor, and foods stored in the box body are easy to spill. Disclosure of Invention The utility model aims at solving the problems existing in the prior art, and provides a manufacturing die of a paper-plastic box cover. The utility model aims at realizing the manufacturing mould of the paper-plastic box cover, which comprises a top plate, a movable template, a fixed template, a connecting plate and a bottom plate which are sequentially arranged, wherein a forming part is arranged in the fixed template, a forming cavity is arranged at the joint of the forming part and the movable template, a plurality of feeding flow passages are arranged in the connecting plate, the feeding flow passages upwards penetrate through the forming part and extend to the bottom of the forming cavity, the feeding flow passages are arranged at the inner edge of the forming part, spray heads are arranged in the feeding flow passages, needle valves capable of moving in a reciprocating mode are arranged in the spray heads, a plurality of telescopic cylinders fixedly connected with each other are arranged in the bottom plate, and the bottom of the needle valves is fixedly connected with the tops of the telescopic cylinders. In the scheme, after the fixed template and the movable template are separated and opened, a prefabricated formed sheet-shaped paperboard is placed above a formed piece, then the movable template is moved downwards to clamp the die, so that a sealed forming cavity is formed at the joint of the formed piece and the movable template, molten plastic is injected into the forming cavity through a spray head arranged in a feeding runner, the molten plastic is connected with the edge of the paperboard, after cooling and forming, a plastic ring edge is formed at the edge of the paperboard, after opening the die, a formed paper plastic box cover product is taken out of the forming cavity, the plastic ring edge is used for being connected with a box body below, and due to the characteristics of high toughness, high elasticity and the like, after the box cover is clamped with the box body, the sealing property of the paper plastic box cover is improved, and the central main body part of the box cover is formed by recyclable paper materials, so that the box cover has the characteristic of environmental protection while ensuring the sealing property. In the manufacturing die of the paper-plastic box cover, a downward concave annular groove is formed in the top edge of the forming part, a plurality of inwards concave clamping grooves are formed in the outer side wall of the forming part, and the annular groove and the clamping grooves are connected with the forming cavity. The ring channel is used for strengthening the joint strength of plastic raw materials and the cardboard of edge, and the draw-in groove can form the structure of buckle in the inboard on plastic ring limit, can with the box body lock of below, improves the stability of connection. In the manufacturing die of the paper-plastic box cover, four feeding flow passages are arranged in the forming part, and the same nozzle structure is arranged in the feeding flow passages. And the molten liquid is respectively injected into the forming cavity through the four flow channels, so that the production efficiency is improved. In the manufacturing die of the paper-plastic box cover, a plurality of first air passages and second air passages are formed in the bottom plate, the first air passages are connected with the top of the telescopic air cylinder, the second air passages are connected with the bottom of the telescopic air cylinder, and a piston capable of moving in a reciprocating mode is arranged at the top of the telescopic air cylinder. Because the first air flue and the second air flue are connected with the upper side and the lower side of the telescopic air cylinder, when the first air flue or the second air flue is used for air i