JP3137404U - Mold - Google Patents

Abstract

Provided is a mold in which burrs and the like are hardly generated because there is no gap between the two because the upper and lower dies are tightly connected when combined.
A lower die comprises an upper die, the lower die comprising a plurality of recessed holes for injecting molding material onto the surface, the upper die having a U-shaped longitudinal section. If the die is combined at the position corresponding to the concave hole of the lower die on the surface, a plurality of through holes penetrating the concave hole are provided, and the diameter of each through hole is at least equal to the diameter of the concave hole. Alternatively, the upper die having a U-shaped cross section is provided with a space, and when the upper and lower dies are combined, the lower die is provided inside, and the inner diameter of the space is The width is smaller than the outer diameter width of the lower die and can be combined more closely with the upper and lower dies.
[Selection] Figure 1

Description

  The present invention relates to a mold, and more particularly to a mold for molding a composite member on the surface of a basic material.

  Usually, the convex part formed in a shoe sole for slip prevention is formed with the metal mold | die which shape | molds multilayer unevenness. Patent registration number 218351 of the Republic of China “Molding of convex and concave pieces and manufacturing method thereof” (hereinafter referred to as proposal 351), and the patent registration number of the aforementioned proposal 351 in Japan is disclosed in In 205 (hereinafter, referred to as No. 205), the above-described typical multilayer unevenness is formed.

  In the techniques described in the above-mentioned proposals 351 and 205, the material is molded by closely bonding the upper and lower molds (or multilayer molds) using a method in which the molds are magnetically attracted.

  However, there are some points to be improved when forming the unevenness with a magnetically attracting mold. First, the molds utilizing the magnetic absorption listed in the 351 and 205 proposals are formed using an electromagnetic clip having a magnetic force or a permanent magnet as a base, and an iron mold on the upper layer of the base is formed. The action of magnetic adsorption is promoted. However, in this embodiment, the cost of the mold having unevenness is greatly increased, and the mold using the magnetic attraction has a defect such as being easy to come off. There is.

  Secondly, when the upper and lower molds are closely connected by a method using magnetic adsorption, it is necessary to strengthen the magnetic adsorption force in advance. The method of strengthening requires an increase in cost if an expensive and powerful magnet is used. Therefore, the thickness of the mold is previously reduced and thinned as a relatively economical method accepted in the industry. A method is taken to strengthen the adsorption force between the molds. However, since the metal mold is thinned to form irregularities, the size of the space changes. Therefore, there is a drawback that the molded convex portion is close to a “plane” and the shape becomes monotonous. For this reason, it cannot respond to the diversity required by consumers of different age groups.

  On the other hand, due to the diversity created by the irregularities, increasing the thickness of the magnetically attracted mold naturally reduces the magnetic attraction. Therefore, the close contact between the molds is insufficient and a gap is formed. In the gap, a liquid molding material is injected and molded in a later step, which becomes one of the causes that makes it difficult to remove the mold.

  Moreover, a burr | flash is formed between the unevenness | corrugations of the surface of the product after a die cutting, and a semi-finished product.

  An object of the present invention is to provide a mold in which there is no gap between the two because the dies are closely connected when the upper and lower dies are combined.

Therefore, as a result of intensive research in view of the drawbacks found in the prior art, the present inventor comprises a lower die and an upper die,
The lower die comprises a plurality of recesses that serve to inject molding material onto the surface,
The upper die has a U-shaped longitudinal section, and has a plurality of through holes penetrating the concave holes when the upper and lower dies are combined at a position corresponding to the concave holes of the lower die on the surface. Each through hole is formed so that the diameter of each through hole is at least equal to or larger than the diameter of the recessed hole, and a space is provided in the upper die having a U-shaped cross section. When combined, the lower die is provided inside, the inner diameter width of the space is smaller than the outer diameter width of the lower die, and there is a problem due to the structure of the mold consisting of a structure that can be combined more closely with the upper and lower dies. The present invention was completed based on such knowledge.

Hereinafter, this device will be specifically described.
The mold according to claim 1 comprises a lower die and an upper die,
The lower die comprises a plurality of recesses that serve to inject molding material onto the surface,
The upper die has a U-shaped longitudinal section, and has a plurality of through holes penetrating the concave holes when the upper and lower dies are combined at a position corresponding to the concave holes of the lower die on the surface. Each through hole is formed so that the diameter of each through hole is at least equal to or larger than the diameter of the recessed hole, and a space is provided in the upper die having a U-shaped cross section. When combined, a lower die is provided inside, the inner diameter width of the space is smaller than the outer diameter width of the lower die, and the structure is more closely combined with the upper and lower dies.

  The mold according to claim 2 is a U-shaped block body in which the upper die in claim 1 comprises a surface and a side wall with an edge of the surface extending downward. A guide angle is formed at a predetermined length on the bottom edge of the inner wall of the U-shaped upper die, and the lower die has a stepped shape, the stepped shape being a bottom seat, and the upper portion of the bottom seat. It is formed from a second seat that protrudes in the center, and the maximum outer diameter width refers to the distance between the opposing side walls of the second seat of the lower die, and also on the upper edge of the second seat A guide angle is formed, and the surface of the second seat provided in the space of the upper die is provided with a hole penetrating the through hole.

  Since the mold according to this device does not generate burrs or the like, the working time and manufacturing cost are greatly reduced, and it has an effect of being economical.

This device is a mold that is tightly connected when the upper and lower dies are combined, so that there is no gap between them and burrs are not easily generated. ,
The lower die comprises a plurality of recesses that serve to inject molding material onto the surface,
The upper die has a U-shaped longitudinal section, and has a plurality of through holes penetrating the concave holes at positions corresponding to the concave holes of the lower die on the surface. Is formed so as to be at least equal to or larger than the diameter of the concave hole, and a space is provided in the upper die having a U-shaped cross section. A specific example is given to detail the structure and features in which a die is provided, the inner diameter width of the space is smaller than the outer diameter width of the lower die and can be combined more closely in combination with the upper and lower dies. This will be described below with reference to the drawings.

  As disclosed in FIGS. 1 and 2, the mold of the present invention includes at least one upper die 20 and a lower die 10. The upper and lower dies 20, 10 are preferably made of a metal material, and the metal material is preferably an aluminum alloy or an alloy with copper.

  The lower die 10 of the mold 1 is formed in a step shape. The step-like lower die 10 includes a bottom seat 11 having a relatively wide width and a wide second seat 12 formed so as to protrude to the center of the bottom seat 11. Since the lower die 10 is stepped, the bottom seat 11 and the second seat 12 provided on the surface of the bottom seat 11 have a relatively narrow width between the bottom seat 11 and the bottom seat 11. An edge A having a preset width on the surface (if the lower die is not provided with the edge A, the bottom seat and the second seat are a single block of the same size).

  A plurality of concave holes 13 having an appropriate depth (not penetrating) in the downward direction are formed on the surface of the second seat 12 of the lower die 10. As shown in the figure, the concave hole 13 is recessed with a U-shaped bottom surface, and the maximum distance between the opposing side walls of the second seat 12 is defined as an outer diameter width T. .

  As disclosed in FIG. 2, the upper die 20 is formed so that the longitudinal cross section has a U-shape. The U-shaped upper die 20 is formed so that the width of the surface 201 and the side wall 202 extending downward from the edge of the surface 201 is equal to the edge A, and is surrounded by the joint. A space 21 recessed inward is formed.

  The maximum distance between the opposing side walls 202 of the space 21 is defined as an inner diameter width t. The space 21 is provided to provide the second seat 12 and is formed so that the inner diameter width t is slightly narrower than the outer diameter width T of the second seat 12.

  Further, as disclosed in FIG. 1, when the second seat 12 of the lower die 10 is provided and connected so as to correspond to the space 21, the through hole 22 formed in the surface 201 parallel to the ground surface of the upper die 20 and the second hole 12. Corresponding to the concave hole 13 formed on the surface of the bidentate 12, a through hole 22 is formed through each other. The diameter of the through hole 22 must be at least as wide as the concave hole. However, as disclosed in FIG. 2B, the diameter of the through hole 22 is preferably formed wider than the concave hole 13.

  As disclosed in FIGS. 2A and 2B, the inner diameter width t of the space 21 of the upper die 20 is formed to be narrower than the outer diameter width T of the second seat 12 of the lower die 10. In the process of combining the unevenness of the upper and lower dies 20 and 10 in correspondence, the upper and lower molds 20 and 10 formed from a metal material in addition to the above-mentioned elements have a stretching property. The second seat 12 provided in the upper layer of the lower mold 10 is smoothly provided in the upper mold space 21. At the same time, due to the physical phenomenon when pressing the metal, a force is formed on the lower die that spreads the die that is horizontal in the longitudinal direction outward, and the tightness of the upper and lower dies in contact with each other is increased.

  Further, in order to quickly and smoothly combine the upper die 20 having the inner diameter width t and the lower die 10 having the outer diameter width T, a length set in advance at the upper edge of the second seat 12 of the lower die. A guide angle C having an inclination is formed. In addition, a guide angle C1 corresponding to the guide angle C is formed at a predetermined length at the bottom edge of the inner wall of the side wall 202 of the upper die 20. Therefore, the upper and lower dies 20 and 10 can be smoothly combined by the guides having the guide angles C and C1.

  As disclosed in FIGS. 3A, 3B, and 3C, first, a molding material B (usually a material such as plastic or rubber, of which plutonium (PU), polyvinyl chloride (PVC), or epoxy resin is preferable) is prepared. The lower die 10 is provided on a flat place.

  The molding material is injected into the concave hole 13 of the lower die, and when the liquid material in the concave hole 13 is solidified by about half, the upper die 20 is pressed downward and combined with the lower die 10. When the liquid material having the same attribute and different color or hardness (or similar) is injected and the molding material in the through hole 22 of the upper die is hardened by about half, the basic die 30 is used as the upper die 20. The upper part of is covered.

  In the process of injecting the molding material twice and coating with the base material, the molding material injected the first time and the second time has the same material attributes, so the molding material is connected together in a half-dried state . The basic material and the molding material injected for the second time are adhered to each other by the same principle to become a single material.

  Next, since the diameter of the concave hole 13 of the lower die is smaller than the diameter of the through hole 22 of the upper die, when the basic material 30 is grasped and a force is applied during die cutting, it is formed on the surface of the basic material 30. The formed composite member 40 can be easily punched out. That is, as disclosed in FIG. 4, a molded product having a composite member on the surface can be manufactured using the above-described mold 1.

  Examples of the basic material 30 include plutonium (PU), polyvinyl chloride (PVC), plastic rubber (TPR), nylon, leather, cloth, thermoplastic fiber material, thermosetting fiber material, and paper. In particular, synthetic resin materials, fiber reinforced materials, or other similar materials are selected and used.

  The mold 1 for molding the above-described composite is an alternative to the conventional technique for forming an uneven composite with a magnetic attraction type mold. Basic pre-estimated structural effects, goals include:

  First, the inner diameter width t of the space 21 is formed to be smaller than the outer diameter width T of the second seat 12, and the upper and lower molds 1 of the metal are closely connected to each other due to the property of the metal stretching. Thus, the contact surfaces of the upper and lower dies are completely and tightly adhered, and no gap is formed.

  For this reason, there is no occurrence of burrs or obstructions in the mold release between the plurality of composite members 40 on the surface of the basic material 30 of the molded product. That is, the molded product manufactured with the mold 1 of the present invention does not generate any burrs on the composite member 40 on the surface of the basic material 30, so the time for removing burrs in the subsequent process is shortened and the working time is reduced. It can be shortened. Therefore, the product production speed is increased.

  Second, since the upper and lower dies have a small difference in inner and outer diameter widths, the lower die has an appropriate thickness (in an appropriate place). Therefore, the concave hole 13 can be changed into various forms. For example, the bottom end of the above-mentioned concave hole is formed flat, or the shape of the bottom end of the concave hole 13 is formed into a conical 131 with a sharp tip as disclosed in FIG. Using the molded product, the surface of the basic material 30 may be formed into a triangular conical shape with a composite member 40 formed by combining materials having at least two kinds of similar attributes. It is also possible to form a three-dimensional composite member 40 having a variety of depths, such as a ladder, a polygon, or a character or design that is recessed inwardly on the bottom surface of the concave hole.

  Thirdly, the mold 1 for molding the composite member 40 is merely an improvement of the metal mold standard. In other words, the manufacturing cost is greatly reduced by increasing the tightness of the upper and lower dies and making it possible to perform die cutting more easily by the force with which the basic material is pulled, thus providing an economic effect.

The above is a preferred embodiment of the present invention, and does not limit the scope of implementation of the present invention. Accordingly, any modifications or changes that can be made by those skilled in the art, which are made within the spirit of the present invention and have an equivalent effect on the present invention, all belong to the scope of claims for registration of the utility model of the present invention. Shall.

It is the exploded view which showed the metal mold | die of this invention. It is sectional drawing which showed the metal mold | die disclosed in FIG. It is the local expanded sectional view which showed the metal mold | die disclosed in FIG. It is the local expanded sectional view which showed the state which combined the upper and lower die | dye disclosed in FIG. It is explanatory drawing which showed the state which combined the metal mold | die of this device. It is explanatory drawing which showed the state which inject | poured the molding material into the metal mold | die of this invention. FIG. 3B is a cross-sectional view showing a state where the material injection of FIG. It is explanatory drawing which showed the product formed in FIG. 3C after die-cutting. It is explanatory drawing which showed other embodiment of the metal mold | die of this invention.

Explanation of symbols

1 Mold 10 Lower die 11 Bottom seat 12 Second seat 13 Concave hole 131 Conical shape 20 Upper die 201 Surface 202 Side wall 21 Space 22 Through-hole 30 Basic material 40 Composite member A Edge B Molding material C Guide angle C1 Guide angle T Outer diameter width t Inner diameter width

Claims (2)

Comprising a lower die and an upper die,
The lower die comprises a plurality of recesses that serve to inject molding material onto the surface,
The upper die has a U-shaped longitudinal section, and has a plurality of through holes penetrating the concave holes when the upper and lower dies are combined at a position corresponding to the concave holes of the lower die on the surface. Each through hole is formed so that the diameter of each through hole is at least equal to or larger than the diameter of the recessed hole, and a space is provided in the upper die having a U-shaped cross section. When combined, the lower die is provided inside, the inner diameter width of the space is smaller than the outer diameter width of the lower die, and the mold has a structure that can be combined more closely with the upper and lower dies .   The upper die is a U-shaped block body having a surface and a side wall with an edge of the surface extending downward, and a bottom end of an inner wall of the U-shaped upper die. The edge is formed with a guide angle with a preset length, the lower die has a stepped shape, and the stepped shape is formed from a bottom seat and a second seat provided protruding from the upper central portion of the bottom seat. The maximum outer diameter width refers to the distance between the opposing side walls of the second seat of the lower die, and a guide angle is also formed at the upper edge of the second seat, which is provided in the space of the upper die. The mold according to claim 1, wherein the surface of the second seat is provided with a hole penetrating the through hole.

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