CN214163826U

CN214163826U - Test die

Info

Publication number: CN214163826U
Application number: CN202022935784.0U
Authority: CN
Inventors: 王海兰; 黄险波; 叶南飚; 周起雄; 关安南; 颜杨; 周沃华; 黄明瑜
Original assignee: Kingfa Science and Technology Co Ltd
Current assignee: Kingfa Science and Technology Co Ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-09-10
Anticipated expiration: 2030-12-09

Abstract

The utility model relates to the technical field of mold, a test mold is disclosed, test mold includes movable mould and cover half, be equipped with the die cavity on the movable mould, the one end of die cavity be equipped with what the die cavity was linked together advances jiao kou, on the cover half with advance the position that jiao kou is relative and be equipped with feedstock channel, be equipped with on the movable mould with a plurality of muscle positions that the die cavity is linked together, a plurality of the high homogeneous phase of muscle position is same, and is a plurality of the width in muscle position increases gradually. Adopt the utility model discloses technical scheme's test mold, can audio-visually show the thickness of muscle position to the influence of sink mark, can play the reference effect to the rational design of the thickness of muscle position when product design, avoid the production of injection moulding product's sink mark in the source.

Description

Test die

Technical Field

The utility model relates to the technical field of mold, especially, relate to a test mold.

Background

At present, sink marks are one of the most common appearance defects of plastic parts, and are usually present in a molded object including a thicker portion, or in a position opposite to a reinforcing rib, a positioning post or a fillet.

However, the influence of the rib position thickness on the degree of sink marks is not related to a test mold, the rib position thickness of a product is designed by means of experience of designers, when the mold is opened, if the degree of sink marks is serious, the mold is opened again, so that the cost is increased, and the sink marks seriously influence the appearance of the product, so that the mold capable of detecting the influence of the rib position direction on the sink marks is urgently needed, and reference is provided for the design of the product.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the utility model provides a test mold, this test mold can be audio-visual shows out the thickness of muscle position to the influence of sink mark, can play the reference effect to the rational design of the thickness of muscle position when the product design, avoids injection moulding product's the production of sink mark in the source.

In order to realize the above-mentioned purpose, the utility model provides a test mold, including movable mould and cover half, be equipped with the die cavity on the movable mould, the one end of die cavity be equipped with what the die cavity was linked together advances gluey mouthful, on the cover half with advance the relative position of gluey mouth and be equipped with feedstock channel, be equipped with on the movable mould with a plurality of muscle positions that the die cavity is linked together, a plurality of the high homogeneous phase in muscle position, it is a plurality of the width in muscle position increases gradually.

In some embodiments of the present application, the spacing between two adjacent rib positions is 15mm to 25 mm.

In some embodiments of the present application, a direction in which the glue inlet communicates with the mold cavity is referred to as a glue inlet direction, wherein an extending direction of a portion of the rib position is parallel to the glue inlet direction, and wherein an extending direction of a portion of the rib position is perpendicular to the glue inlet direction.

In some embodiments of the present application, the number of the rib positions is 8, wherein four rib positions are arranged at the bottom of the mold cavity at intervals perpendicular to the glue feeding direction, and four rib positions are arranged at the bottom of the mold cavity at intervals parallel to the glue feeding direction.

In some embodiments of the present application, the glue inlet includes a side gate and a fan gate connected to each other, and the fan gate is disposed opposite to the feeding channel.

In some embodiments of the present application, the depth of the side gate is 30-50% of the depth of the mold cavity.

In some embodiments of the present application, a depth of the fan gate is equal to a depth of the mold cavity.

In some embodiments of the present application, the side of the side gate connected to the mold cavity is a feeding side, and the length of the side gate in communication with the feeding side is 55-80% of the length of the feeding side.

In some embodiments of the present application, a cooling well is disposed at a position opposite to the feeding channel on one side of the fan gate, and the depth of the cooling well is greater than that of the fan gate.

In some embodiments of the present application, the rib has a depth that is 1.5 to 3 times a depth of the cavity.

The embodiment of the utility model provides a test mold, compared with the prior art, its beneficial effect lies in:

the utility model discloses test mold, through setting up the different muscle position of a plurality of thickness on the movable mould, thereby can lead into the die cavity through feedstock channel with fused plastic material, make during fused plastic material flows into a plurality of muscle positions of different thickness, treat injection moulding and accomplish the back, take out injection moulding's sample, can be directly through the influence of the muscle position of the different thickness of macroscopic observation to the shrinkage mark degree, thereby observe that the result of muscle position thickness to the influence of shrinkage mark can regard as the design reference, avoid the production of shrinkage mark when following product design, the shrinkage mark degree when this embodiment can exempt from spraying polymer to mould plastics through the direct aassessment of the method of moulding plastics, accessible macroscopic observation directly, it is convenient and directly perceived to detect, and convenient for operation.

Drawings

Fig. 1 is an exploded view of a test mold according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a fixed mold according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a movable mold according to an embodiment of the present invention;

in the figure, 1, a fixed die, 11, a feeding channel, 12, a first parting surface, 2, a movable die, 21, a second parting surface, 22, a cold material well, 23, a fan-shaped pouring gate, 24, a side pouring gate, 25, a die cavity, 2a, a first rib position, 2b, a second rib position, 2c, a third rib position, 2d, a fourth rib position, 2e, a fifth rib position, 2f, a sixth rib position, 2g, a seventh rib position, 2h, an eighth rib position, 3 and a sample.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The invention will be further explained and explained with reference to the drawings and the embodiments in the following description. The step numbers in the embodiments of the present invention are provided only for convenience of illustration, the sequence between the steps is not limited at all, and the execution sequence of each step in the embodiments can be adapted according to the understanding of those skilled in the art.

As shown in fig. 1 to 3, the utility model discloses preferred embodiment's a test mold, including movable mould 2 and cover half 1, be equipped with die cavity 25 on the movable mould 2, the one end of die cavity 25 is equipped with advances gluey mouth that is linked together with die cavity 25, and the position relative with advancing gluey mouth on the cover half is equipped with feedstock channel 11, is equipped with a plurality of muscle positions that are linked together with die cavity 25 on the movable mould 2, and the height homogeneous phase in a plurality of muscle positions is the same, and the width in a plurality of muscle positions increases gradually.

Based on above technical scheme, through setting up the muscle position that a plurality of thickness are different on movable mould 2, thereby can be through in feedstock channel 11 leads to die cavity 25 with the leading-in die cavity of fused plastic material, make during the fused plastic material flows into a plurality of muscle positions of different thickness, treat injection moulding completion after, take out injection moulding's sample 3, can be with the direct muscle position of observing different thickness through the naked eye to the influence of sink mark degree, thereby observe that the result of muscle position thickness to the influence of sink mark can regard as the design reference, avoid the production of sink mark during from the product design, the sink mark degree when this embodiment can directly appraise spraying-free polymer through the method of moulding plastics, accessible naked eye direct observation, it is convenient and directly perceived to detect, and convenient operation.

In some embodiments of the present application, the spacing between two adjacent rib positions is 15mm to 25 mm. Preferably, the center lines of two adjacent ribs are spaced by 20 mm. Therefore, the observation of the sample 3 after injection molding is facilitated, and the relation between the rib position thickness and the sink mark is conveniently obtained.

In some embodiments of the present application, a direction in which the glue inlet communicates with the mold cavity 25 is referred to as a glue inlet direction, wherein an extending direction of a portion of the rib position is parallel to the glue inlet direction, and an extending direction of a portion of the rib position is perpendicular to the glue inlet direction. Therefore, the severity of sink marks generated on rib positions with the same thickness and arranged at different angles can be compared, and whether the setting direction of the rib positions is related to the sink marks or not can be judged.

In some embodiments of the present application, the number of the rib positions is 8, wherein four rib positions are arranged at the bottom of the mold cavity 25 at intervals perpendicular to the glue feeding direction, and four rib positions are arranged at the bottom of the mold cavity 25 at intervals parallel to the glue feeding direction. Therefore, the severity of sink marks generated on rib positions with the same thickness, which are perpendicular to the glue feeding direction and parallel to the glue feeding direction, can be compared, and whether the setting direction of the rib positions is related to the sink marks or not can be judged. Alternatively, rib positions of different thicknesses at other angles can be arranged in the die cavity 25 to detect the influence of the arranged angles of the rib positions on the sink marks. For convenience of description, four rib positions parallel to the feeding direction are labeled in sequence as: first muscle position 2a, second muscle position 2b, third muscle position 2c and fourth muscle position 2d, the muscle position of four perpendicular to feeding direction marks in proper order: a fifth rib position 2e, a sixth rib position 2f, a seventh rib position 2g and an eighth rib position 2 h.

In some embodiments of the present application, the glue inlet comprises a side gate 24 and a fan gate 23 connected, and the fan gate 23 is disposed opposite to the feeding channel 11. Through setting up fan-shaped runner 23 and side gate 24 that link to each other to make the material flow of the molten plastic material that gets into in die cavity 25 more steady, ensure that injection moulding's effect is better.

In some embodiments of the present application, the depth of the side gate 24 is 30% -50% of the depth of the mold cavity 25, so that the flow rate of the molten plastic material entering the mold cavity 25 is relatively smooth, thereby avoiding other defects of the injection molded sample 3 from affecting the observation.

In some embodiments of the present application, the depth of the fan gate 23 is equal to the depth of the mold cavity 25. In some embodiments of the present application, the side of the side gate 24 connected to the mold cavity 25 is a feeding side, and the length of the side gate 24 connected to the feeding side is 55% to 80% of the length of the feeding side, so that the size of the feeding glue is large, and the wide gate helps to realize that the flow direction of the molten plastic material on the mold cavity 25 is parallel to the gate.

In some embodiments of the present application, a cooling material well 22 is disposed at a position opposite to the feeding channel 11 on one side of the fan gate 23, the depth of the cooling material well 22 is greater than that of the fan gate 23, the cooling material well 22 can receive the initially entered molten plastic material, and the initially entered molten plastic material is rapidly cooled after contacting the moving mold 2 and the fixed mold 1 made of metal, so as to prevent the cold material from entering the mold cavity and affecting the quality of the plastic part, and the molten material can smoothly fill the mold cavity 25.

In some embodiments of the present application, the rib locations have a depth that is 1.5-3 times the depth of the mold cavities 25. In some embodiments of the application, the depth of each rib position is 4 mm-6 mm, the depth of the fan-shaped gate 23 is 2 mm-3 mm, and the depth of each rib position and the depth of the mold cavity 25 are arranged in proportion, so that the problem that the injection molding effect of each rib position is poor in a sample 3 after injection molding is avoided.

In some embodiments of the present application, one side of the fixed mold 1 attached to the movable mold 2 is the first parting surface 12, one side of the movable mold 2 attached to the fixed mold 1 is the second parting surface 21, and the first parting surface 12 and/or the second parting surface 21 are/is provided with an exhaust groove, so as to avoid the defect of the injection molded sample 3 caused by trapped air.

In some embodiments of the present application, the side gate 24 has a thickness of 0.4 x the thickness of the mold cavity 25 is 0.4 x the thickness of the fan gate 23. The depth of the die cavity 25 is 2.5mm, the die cavity 25 is filled with glue through a side gate 24 with a rectangular section and a depth of 1mm, the side gate 24 is connected with a fan-shaped gate 23 with a thickness of 2.5mm, 4 ribs parallel and vertical to the glue inlet direction are arranged in the die cavity 25, and the central line interval of every two ribs is 20 mm. The depth of the rib position is consistent and 5mm, namely the ratio of the depth of the rib position to the thickness of the plate is 2. Typically, the rib locations have a depth of less than or equal to 3 ANGSTROM die cavity 25. The thicknesses of the rib positions in the parallel direction and the vertical direction are 1.8mm, 1.5mm, 1.2mm and 0.8mm in sequence, namely the thicknesses of the rib positions are 72%, 60%, 48% and 32% of the depth of the die cavity 25 (namely the thickness of the sample 3), so that the influence relationship of the ratio of the thickness of the rib positions to the thickness of the sample 3 on the severity of sink marks can be obtained. Meanwhile, the relation between the sink mark and the glue feeding direction can be obtained, namely the pressure maintaining effect along the flowing direction is superior to that in the vertical direction, and the method can be used for evaluating the influence of the rib positions with the same thickness and different arrangement directions on the sink mark.

The utility model discloses a working process does: during injection molding, molten plastic materials are injected into the feeding channel 11, sequentially flow into the mold cavity 25 through the fan-shaped gate 23 and the side gate 24, and enter the first rib position 2a, the second rib position 2b, the third rib position 2c, the fourth rib position 2d, the fifth rib position 2e, the sixth rib position 2f, the seventh rib position 2g and the eighth rib position 2 h. After the injection molding is completed, the movable mold 2 is moved, and the whole sample 33 can be detached from the mold. After the sample 33 is removed, the degree of sink marks formed near the first bead position 2a, the second bead position 2b, the third bead position 2c, the fourth bead position 2d, the fifth bead position 2e, the sixth bead position 2f, the seventh bead position 2g, and the eighth bead position 2h can be observed, so that the influence of the bead position direction on the sink marks can be obtained.

To sum up, the embodiment of the utility model provides a test mold, its test mold is through setting up the different muscle position of a plurality of thickness on movable mould 2, thereby can be through in feedstock channel 11 with the leading-in die cavity 25 of fused plastic material, make during a plurality of muscle positions of fused plastic material inflow different thickness, treat injection moulding and accomplish the back, take out injection moulding's sample 3, can be with the direct muscle position through the different thickness of macroscopic observation to the influence of indentation degree, thereby observe the result of muscle position thickness to the influence of indentation can regard as the design reference, avoid the production of indentation when designing from the product, the indentation degree when this embodiment can exempt from spraying polymer to mould plastics through the direct aassessment of the method of moulding plastics, accessible macroscopic observation directly, it is convenient and directly perceived to detect, and convenient operation.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "longitudinal", "X-axis direction", "Y-axis direction", "Z-axis direction", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Moreover, some of the above terms may be used to indicate other meanings besides orientation or position, for example, the term "on" may also be used to indicate some kind of dependency or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a test mold, its characterized in that, includes movable mould and cover half, be equipped with the die cavity on the movable mould, the one end of die cavity be equipped with what the die cavity is linked together advances gluey mouth, on the cover half with advance the relative position of gluey mouth and be equipped with feedstock channel, be equipped with on the movable mould with a plurality of muscle positions that the die cavity is linked together, a plurality of the height homogeneous phase of muscle position is the same, and is a plurality of the width of muscle position increases gradually.

2. The test fixture of claim 1, wherein the spacing between adjacent rib locations is between 15mm and 25 mm.

3. The testing mold according to claim 1, wherein a direction in which the glue inlet communicates with the mold cavity is denoted as a glue inlet direction, wherein an extending direction of a part of the rib positions is parallel to the glue inlet direction, and wherein an extending direction of a part of the rib positions is perpendicular to the glue inlet direction.

4. The test mold as claimed in claim 1, wherein the number of the rib positions is 8, four rib positions are arranged at the bottom of the mold cavity at intervals perpendicular to the glue feeding direction, and four rib positions are arranged at the bottom of the mold cavity at intervals parallel to the glue feeding direction.

5. The test mold of claim 1, wherein the glue inlet comprises a side gate and a fan gate connected to each other, the fan gate being disposed opposite the feed channel.

6. The test mold of claim 5, wherein the depth of the side gate is 30-50% of the depth of the mold cavity.

7. The test mold of claim 5, wherein a depth of the sector gate is equal to a depth of the mold cavity.

8. The test mold of claim 5, wherein the side of the side gate that is connected to the mold cavity is a feed side, and the length of the side gate that is in communication with the feed side is 55-80% of the length of the feed side.

9. The test mold of claim 5, wherein a cooling well is provided at a position opposite to the feeding channel on one side of the fan gate, and the cooling well has a depth larger than that of the fan gate.

10. The test tool of claim 1 wherein the depth of the rib locations is 1.5-3 times the depth of the mold cavities.