Die structure for solving material shortage of B surface of polyurethane foam

Abstract

The utility model discloses a mould structure for solving material shortage of a B surface of polyurethane foam, which comprises a mould body, dents are distributed on the mould surface of the mould body corresponding to the B surface of the polyurethane foam, the dents are formed by staggering a plurality of transverse strip grooves and a plurality of longitudinal strip grooves, the integral body is latticed, and the dents do not exceed the edge of the corresponding mould surface. The width of a single transverse strip groove or a single longitudinal strip groove is 3-4 mm, the depth of the single transverse strip groove or the single longitudinal strip groove is 5-6 mm, and the distance between every two adjacent transverse strip grooves or every two adjacent longitudinal strip grooves is 30-40 mm. According to the utility model, the wide dents are fully distributed on the mold surface corresponding to the B surface of the product, the dents are enabled to become gas collecting grooves, and redundant gas generated during chemical material foaming enters the gas collecting grooves of the mold, so that foam foaming can be filled to a full-mold outline clear state required by the product, and the problem of material shortage of the B surface of polyurethane foaming is effectively solved; the device is low in cost, convenient to operate, small in modification amount and suitable for solving the problem of material shortage at any position of the polyurethane foaming B surface.

Description

Technical Field

[0001] The utility model relates to the technical field of mold manufacturing, in particular to a mold structure for solving the problem of material shortage on the B surface of polyurethane foam. Background Art

[0002] In view of the current problem of polyurethane foam B side (back side) not being full of mold (material shortage), the main method to solve it is to change the material pouring trajectory or increase the feeding amount through process debugging, but the current method cannot completely solve the problem of material shortage and greatly increases the cost. The common solution on mold equipment is to add exhaust pins at the corresponding position. The disadvantage is that there are water pipes inside the mold, which makes it impossible to install exhaust pins in some areas. It is not suitable for solving the problem of material shortage at any position of the B side of polyurethane foam, and installing too many exhaust pins will also greatly increase the cost. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the utility model aims to provide a mold structure with low cost, easy operation and small modification amount, so as to solve the problem of material shortage on the B side of polyurethane foaming.

[0004] In order to achieve the above-mentioned purpose, the utility model proposes a mold structure for solving the problem of material shortage on the B side of polyurethane foam, including a mold body, and the mold surface corresponding to the B side of the mold body and the polyurethane foam is covered with dents, and the dents are formed by staggered multiple transverse grooves and multiple longitudinal grooves, and the whole is in a grid shape, and the dents do not exceed the edge of the corresponding mold surface, the width of a single transverse groove or a single longitudinal groove is 3 to 4 mm, the depth is 5 to 6 mm, and the distance between two adjacent transverse grooves or two adjacent longitudinal grooves is 30 to 40 mm.

[0005] In the above scheme: the distance between two adjacent transverse grooves and the distance between two adjacent longitudinal grooves are the same, both of which are 35 mm. The single grid in the indentation is diamond or square. Both the transverse grooves and the longitudinal grooves serve as air collecting grooves. This arrangement is conducive to ensuring the air collecting effect of the air collecting groove, reducing foam sticking to the mold, and facilitating processing.

[0006] In the above scheme: the width of a single transverse groove and a single longitudinal groove is 3mm, and both the transverse groove and the longitudinal groove serve as gas collecting grooves. This size is conducive to ensuring the gas collecting effect of the gas collecting groove, and can avoid excessive width affecting the foam appearance and subsequent assembly.

[0007] In the above scheme: the depth of a single transverse groove and a single longitudinal groove is 5 mm, and both the transverse groove and the longitudinal groove serve as gas collecting grooves. This size is conducive to ensuring the gas collecting effect of the gas collecting groove, and can avoid excessive width affecting the foam appearance and subsequent assembly.

[0008] In the above scheme: the transverse grooves and the longitudinal grooves are both rectangular grooves with rectangular cross-sections. Under the same width and depth, the rectangular grooves have a larger space than the arc-shaped grooves and a better gas collection effect.

[0009] The beneficial effects of the utility model are:

[0010] It is only necessary to cover the mold surface corresponding to the B side of the product with wide indentations, so that the indentations become gas collecting grooves. The excess gas generated when the material is fermented enters the mold gas collecting grooves, so that the foam can be filled to the full mold with clear contours required by the product, effectively solving the problem of material shortage on the B side of the polyurethane foam. In short, the utility model has low cost, easy operation, small modification amount, and is suitable for solving material shortage at any position of the B side of the polyurethane foam. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 yes Figure 1 A partial schematic diagram of . DETAILED DESCRIPTION

[0013] like Figure 1 As shown in —2, a mold structure for solving the problem of material shortage on the B side of polyurethane foam is provided. The main body of the mold structure is a mold body 1, and the mold surface corresponding to the B side of the polyurethane foam is covered with dents 2.

[0014] The dimple 2 is formed by a plurality of transverse grooves 21 and a plurality of longitudinal grooves 22 in an alternating manner, and is in a grid shape as a whole. The dimple 2 does not exceed the edge of the corresponding mold surface.

[0015] The width of a single transverse groove 21 or a single longitudinal groove 22 is 3-4 mm, the depth is 5-6 mm, and the distance between two adjacent transverse grooves 21 or two adjacent longitudinal grooves 22 is 30-40 mm.

[0016] Since the mold body 1 is provided with the indentations 2 , a grid-like protrusion is formed on the B surface of the polyurethane foam. The grid-like protrusion is located on the B surface of the polyurethane foam, and thus does not affect the actual use of the polyurethane foam.

[0017] Preferably, the distance between two adjacent transverse grooves 21 is the same as the distance between two adjacent longitudinal grooves 22, both of which are 35 mm. The single grid in the indentation 1 is diamond or square, and both the transverse grooves 21 and the longitudinal grooves 22 serve as air collecting grooves. This arrangement is conducive to ensuring the air collecting effect of the air collecting groove, reducing foam sticking to the mold, and facilitating processing.

[0018] Preferably, the width of a single transverse groove 21 and a single longitudinal groove 22 are both 3 mm. Both the transverse groove 21 and the longitudinal groove 22 serve as gas collecting grooves. This size is conducive to ensuring the gas collecting effect of the gas collecting groove, and can avoid excessive width affecting the foam appearance and subsequent assembly.

[0019] Preferably, the depth of a single transverse groove 21 and a single longitudinal groove 22 are both 5 mm. Both the transverse groove 21 and the longitudinal groove 22 serve as gas collecting grooves. This size is conducive to ensuring the gas collecting effect of the gas collecting groove, and can avoid excessive width affecting the foam appearance and subsequent assembly.

[0020] Preferably, both the transverse grooves 21 and the longitudinal grooves 22 are rectangular grooves with rectangular cross-sections. Under the same width and depth, the rectangular grooves have a larger space than the arc-shaped grooves and have a better gas collection effect.

Claims

1. A mold structure for solving the problem of lack of material on the B side of polyurethane foam, comprising a mold body (1), Features: The mold body (1) is covered with indentations (2) on the mold surface corresponding to the polyurethane foam surface B. The indentations (2) are formed by a plurality of transverse grooves (21) and a plurality of longitudinal grooves (22) interlaced to form a grid shape. The indentations (2) do not extend beyond the edge of the corresponding mold surface. The width of a single transverse groove (21) or a single longitudinal groove (22) is 3 to 4 mm, the depth is 5 to 6 mm, and the distance between two adjacent transverse grooves (21) or two adjacent longitudinal grooves (22) is 30 to 40 mm.

2. The mold structure for solving the problem of lack of material on the B side of polyurethane foam according to claim 1, Features: The distance between two adjacent transverse grooves (21) and the distance between two adjacent longitudinal grooves (22) are the same, both being 35 mm. A single grid in the indentation (2) is in the shape of a diamond or a square.

3. The mold structure for solving the problem of material shortage on the B side of polyurethane foam according to claim 1, Features: The width of each of the transverse grooves (21) and the width of each of the longitudinal grooves (22) are both 3 mm.

4. The mold structure for solving the problem of lack of material on the B side of polyurethane foam according to claim 1, Features: The depth of each of the transverse grooves (21) and the longitudinal grooves (22) is 5 mm.

5. The mold structure for solving the problem of material shortage on the B side of polyurethane foam according to claim 1, Features: The transverse grooves (21) and the longitudinal grooves (22) are both rectangular grooves with rectangular cross-sections.

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