Thick-wall pattern light guide structural member large and small combined sliding block secondary ejection demolding mold structure

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a secondary ejection demolding mold structure for large and small combined sliding blocks of a thick-wall pattern light guide structural part. The pattern light guide structural member forming die comprises a pattern light guide structural member forming lower die. In the injection molding process, the pattern light guide structural part forming lower mold corresponds to the corresponding upper mold structure, at the moment, the combined side edge forming assembly is matched with the embedded forming sliding piece to be used for forming the side edge and the lower surface structure of the thick-wall pattern light guide structural part, and molten materials are injected into the two cavities through the injection molding flow dividing part; after injection molding is completed, the mold is opened, the combined type side edge forming assembly is moved towards the side away from the embedded type forming sliding piece, then the embedded type forming sliding piece is moved upwards to be matched with the straight ejection piece, secondary ejection demolding is achieved, multi-directional comprehensive ejection demolding can be conducted on the side portion and the middle portion of a plastic piece, a combined type ejection structure is adopted, the ejection area is large, the ejection efficiency is high, and the injection molding efficiency is high. And the demolding fluency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mould technical field relates to a thick wall pattern light guide structure spare size combination sliding block secondary ejection demoulding mould structure. BACKGROUND

[0002] The light guide strip is a kind of part in combination of optical design and precision machining, and the light guide strip is provided with pattern tooth for gathering light on one side, because the structure of light guide strip is thin and long and has pattern on one side, so the precision of mould is higher when the light guide strip is moulded by injection moulding.When the product is ejected by using conventional ejector pin structure, the ejector pin is easily damaged to the pattern of light guide strip or leaves obvious mark of ejector rod, if only using embedded block type ejection forming structure, then there will be insufficient ejection area, small ejection area and poor demoulding smoothness.Therefore, it is urgent to design a thick wall pattern light guide structure spare size combination sliding block secondary ejection demoulding mould structure, which can realize secondary ejection demoulding, multidirectional and comprehensive ejection demoulding to side and middle part of plastic part, uses combined ejection structure, has large ejection area, high ejection efficiency and improves demoulding smoothness.

[0003] In order to overcome the defects of prior art, people have explored constantly, and proposed various solutions, such as Chinese patent discloses a pattern tooth insert structure for light guide strip mould [application number: 201520087679.2], pattern tooth insert is arranged beside movable die insert, the pattern tooth insert can be embedded and fixed on movable die insert, the pattern tooth insert is close to one side of movable die insert, and the pattern tooth is formed on the end face of light guide strip for forming the arc side of light guide strip product. CONTENT OF UTILITY MODEL

[0004] The utility model aims at the above problem, provide a kind of thick wall pattern light guide structure spare size combination sliding block secondary ejection demoulding mould structure.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of thick wall pattern light guide structure spare size combination sliding block secondary ejection demoulding mould structure, including pattern light guide structure spare forming lower mould, the pattern light guide structure spare forming lower mould is equipped with the embedded type forming slider that can reciprocate straight line motion along vertical direction, the embedded type forming slider outer side is equipped with combined side edge forming assembly, the pattern light guide structure spare forming lower mould is equipped with straight top piece that is set staggered with embedded type forming slider and is through pattern light guide structure spare forming lower mould, the pattern light guide structure spare forming lower mould is equipped with injection molding shunt portion, the injection molding shunt portion is communicated with embedded type forming slider.

[0007] In the above-mentioned thick-walled patterned light-guiding structural component large and small combined slider secondary ejection demolding mold structure, the embedded molding slide includes two embedded molding slides arranged in the patterned light-guiding structural component molding lower mold, and the top of the embedded molding slide is provided with a side molding surface.

[0008] In the above-mentioned thick-walled patterned light guide structural part large and small combined slider secondary ejection demoulding mold structure, the patterned light guide structural part forming lower mold is provided with two inner molding surfaces, and the positions of the inner molding surfaces correspond to the side molding surfaces and the shapes are matched.

[0009] In the above-mentioned thick-walled patterned light-guiding structural member large and small combined slider secondary ejection demoulding mold structure, the bottom of the embedded molding slider is provided with a plurality of slider straight top connecting rods, and the slider straight top connecting rods and the straight top parts are staggered.

[0010] In the above-mentioned thick-walled patterned light-guiding structural component large and small combined slider secondary ejection demolding mold structure, the combined side forming component includes a lower side auxiliary forming slide and an upper side auxiliary forming slide arranged on the outside of the embedded forming slide, and the lower side auxiliary forming slide is abutted and matched with the embedded forming slide.

[0011] In the above-mentioned thick-walled patterned light-guiding structural component large and small combined slider secondary ejection demoulding mold structure, the inner side of the lower side auxiliary forming slide plate is provided with an abutting cutoff arc surface, and the abutting cutoff arc surface is arranged opposite to the side forming surface.

[0012] In the above-mentioned thick-walled patterned light-guiding structural member large and small combined slider secondary ejection demolding mold structure, a side forming space is formed between the lower side auxiliary forming slide and the upper side auxiliary forming slide, the lower side auxiliary forming slide is provided with a slide clamping protrusion, and the upper side auxiliary forming slide is provided with a slide clamping cavity, and the slide clamping protrusion is snap-fitted with the slide clamping cavity.

[0013] In the above-mentioned thick-walled patterned light-guiding structural component large and small combined slider secondary ejection demolding mold structure, the straight ejector includes a plurality of middle straight ejector rods arranged in the patterned light-guiding structural component forming lower mold, and the middle straight ejector rods pass through the patterned light-guiding structural component forming lower mold and are arranged opposite to the inner molding surface.

[0014] In the above-mentioned thick-walled patterned light guide structural component large and small combined slider secondary ejection demolding mold structure, the injection diversion part includes a main flow hole and two diversion channels arranged in the patterned light guide structural component molding lower mold, and the diversion channels are connected to the inner molding surface.

[0015] In the above-mentioned secondary ejection demoulding mold structure of the large and small combined sliders of the thick-walled patterned light-guiding structural component, a lower mold center clamping protrusion is provided on the lower mold for forming the patterned light-guiding structural component.

[0016] Compared with the existing technology, the advantages of this utility model are:

[0017] 1. During the injection molding process of the present invention, the lower mold for molding the patterned light-guiding structure corresponds to the corresponding upper mold structure. At this time, the combined side molding component cooperates with the embedded molding slide to form the side and lower surface structure of the thick-walled patterned light-guiding structure plastic part. The molten material is injected into the two cavities through the injection diversion part. After the injection molding is completed, the mold is opened, and the combined side molding component is moved to the side away from the embedded molding slide, and then moved upward through the embedded molding slide, and cooperated with the straight ejector to realize secondary ejection and demolding. The side and middle parts of the plastic part can be ejected and demolded in all directions. The combined ejection structure has a large ejection area, high ejection efficiency, and improved demolding smoothness.

[0018] 2. During the injection molding process of the present invention, the lower side auxiliary molding slide plate and the upper side auxiliary molding slide plate are molded together, and the cut-off arc surface is arranged opposite to the side molding surface to cooperate with the side molding surface to form a cut-off surface to prevent the material from flowing out from the outside and form the edge surface at the same time.

[0019] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the present utility model.

[0021] Figure 2 It is a partial structural diagram of the utility model.

[0022] Figure 3 It is a partial structural diagram of the utility model in another direction.

[0023] Figure 4 It is a partial structural diagram of the utility model in another direction.

[0024] In the figure: patterned light guide structural part molding lower mold 1, embedded molding slide 2, combined side molding component 3 straight top member 4, injection diversion part 5, embedded molding slider 6, side molding surface 7, inner molding surface 8, slider straight top connecting rod 9, lower side auxiliary molding slide 10, upper side auxiliary molding slide 11, abutting cut-off arc surface 12, side molding space 13, slide plate clamping protrusion 14, slide plate clamping cavity 15, middle straight top rod 16, main flow hole 17, diversion channel 18, lower mold center clamping protrusion 19. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1-4 As shown, a thick-walled patterned light-guiding structural part large and small combined slider secondary ejection demolding mold structure includes a patterned light-guiding structural part molding lower mold 1, the patterned light-guiding structural part molding lower mold 1 is provided with an embedded molding slide 2 that can reciprocate linearly in the vertical direction, the embedded molding slide 2 is provided with a combined side molding component 3 on the outside, the patterned light-guiding structural part molding lower mold 1 is provided with a straight ejector 4 that passes through the patterned light-guiding structural part molding lower mold 1 and is staggered with the embedded molding slide 2, the patterned light-guiding structural part molding lower mold 1 is provided with an injection diversion part 5, and the injection diversion part 5 is communicated with the embedded molding slide 2.

[0027] In this embodiment, during the injection molding process, the lower mold 1 for molding the patterned light-guiding structure corresponds to the corresponding upper mold structure. At this time, the combined side molding component 3 cooperates with the embedded molding slide 2 to form the side and lower surface structure of the thick-walled patterned light-guiding structure plastic part. The molten material is injected into the two cavities through the injection molding diversion part 5. After the injection molding is completed, the mold is opened, and the combined side molding component 3 is moved to the side away from the embedded molding slide 2, and then moved upward through the embedded molding slide 2, and cooperated with the straight ejector 4 to realize secondary ejection and demolding. The side and middle parts of the plastic part can be ejected and demolded in all directions. The combined ejection structure has a large ejection area, high ejection efficiency, and improved demolding smoothness.

[0028] Combine Figure 1-4 As shown, the embedded molding slide 2 includes two embedded molding sliders 6 arranged in the patterned light-guiding structural component molding lower mold 1, and the top of the embedded molding slider 6 is provided with a side molding surface 7, and the patterned light-guiding structural component molding lower mold 1 is provided with two inner molding surfaces 8, and the inner molding surfaces 8 correspond to the position of the side molding surfaces 7 and are matched in shape.

[0029] Specifically, during the injection molding process, the side molding surface 7 of the embedded molding slider 6 cooperates with the inner molding surface 8 to synchronously mold the side and inner structure of the plastic part.

[0030] Combine Figure 3 、 Figure 4 As shown, a plurality of slider straight top connecting rods 9 are provided at the bottom of the embedded molded slider 6 , and the slider straight top connecting rods 9 and the straight top members 4 are arranged in an alternating manner.

[0031] In this embodiment, after the injection molding is completed, the mold is opened, and the embedded molding slider 6 is pushed upward by the slider directly pushing the connecting rod 9 to achieve side ejection and demoulding.

[0032] The combined side forming component 3 includes a lower side auxiliary forming slide 10 and an upper side auxiliary forming slide 11 arranged on the outside of the embedded forming slider 6. The lower side auxiliary forming slide 10 is abutted and matched with the embedded forming slider 6. The inner side of the lower side auxiliary forming slide 10 is provided with an abutting cut-off arc surface 12, and the abutting cut-off arc surface 12 is arranged opposite to the side forming surface 7.

[0033] In this embodiment, during the injection molding process, the lower side auxiliary molding slide 10 and the upper side auxiliary molding slide 11 are molded together, and the cutoff arc surface 12 is arranged opposite to the side molding surface 7 to cooperate with the side molding surface 7 to form a cutoff surface to prevent the material from flowing out from the outside and at the same time form the edge surface.

[0034] A side forming space 13 is formed between the lower side auxiliary forming slide 10 and the upper side auxiliary forming slide 11. The lower side auxiliary forming slide 10 is provided with a slide mold protrusion 14, and the upper side auxiliary forming slide 11 is provided with a slide mold cavity 15. The slide mold protrusion 14 is snap-fitted with the slide mold cavity 15.

[0035] In this embodiment, the side molding space 13 is used to provide material flow space to facilitate the molding of plastic parts. When closing the mold, the mold-closing protrusion 14 of the slide plate is engaged with the mold-closing cavity 15 of the slide plate, and the mold-closing precision is high.

[0036] Combine Figure 1-4 As shown, the straight push piece 4 includes a plurality of middle straight push rods 16 arranged in the pattern light guide structure component forming lower mold 1. The middle straight push rods 16 pass through the pattern light guide structure component forming lower mold 1 and are arranged opposite to the inner molding surface 8.

[0037] In this embodiment, after the injection molding is completed, the mold is opened, and the middle portion of the molded plastic part is ejected from the mold by moving the middle straight ejector rod 16 upward.

[0038] Combine Figure 1-4 As shown, the injection molding diverter portion 5 includes a main flow hole 17 and two diverter channels 18 provided in the lower mold 1 for molding the patterned light guide structure component. The diverter channels 18 are connected to the inner molding surface 8 .

[0039] In this embodiment, during injection molding, the molten material flows into the two cavities synchronously through the main flow hole 17 and the two branch flow channels 18, and the molding efficiency is high.

[0040] Combine Figure 1-4 As shown, the lower mold 1 for forming the patterned light guide structural component is provided with a lower mold center clamping protrusion 19 .

[0041] In this embodiment, the center mold clamping protrusion 19 of the lower mold is used to cooperate in mold clamping and positioning, with high precision.

[0042] The working principle of this utility model is:

[0043] During the injection molding process, the patterned light-guiding structural component forming lower mold 1 corresponds to the corresponding upper mold structure, and the lower mold center mold protrusion 19 is used to cooperate with the mold positioning with high precision. The lower side auxiliary molding slide 10 and the upper side auxiliary molding slide 11 are molded, and the abutting cutoff arc surface 12 is set opposite to the side molding surface 7 to cooperate with the side molding surface 7 to form a cutoff surface to prevent the material from flowing out from the outside and forming the edge surface at the same time. The side molding space 13 is used to provide material flow space to facilitate the molding of plastic parts. When the mold is closed, the slide mold protrusion 14 is engaged with the slide mold cavity 15 to close the mold. High precision, the molten material flows into the two cavities synchronously through the main hole 17 and the two branch channels 18, and the molding efficiency is high. After the injection molding is completed, the mold is opened, and the lower side auxiliary molding slide 10 and the upper side auxiliary molding slide 11 are moved to the side away from the embedded molding slide 2. The embedded molding slide 6 is pushed upward by the slider straight top connecting rod 9 to realize the side ejection demoulding, and the middle straight ejector rod 16 is cooperated to realize the secondary ejection demoulding. The side and middle of the plastic part can be ejected and demoulded in all directions. The combined ejection structure has a large ejection area, high ejection efficiency, and improved demoulding smoothness.

[0044] During the injection molding process, the side molding surface 7 of the embedded molding slider 6 cooperates with the inner molding surface 8 to synchronously mold the side and inner structure of the plastic part.

[0045] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them with similar methods, without departing from the spirit of the present invention.

[0046] Although this article frequently uses terms such as the patterned light guide structural component molding lower mold 1, embedded molding slide 2, combined side molding assembly 3 straight top member 4, injection molding diverter 5, embedded molding slider 6, side molding surface 7, inner molding surface 8, slider straight top connecting rod 9, lower side auxiliary molding slide 10, upper side auxiliary molding slide 11, abutting cut-off arc surface 12, side molding space 13, slide mold protrusion 14, slide mold cavity 15, middle straight top rod 16, main flow hole 17, diversion channel 18, lower mold center mold protrusion 19, etc., it does not exclude the possibility of using other terms. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model. Interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A secondary ejection demoulding mold structure for a thick-walled patterned light-guiding structural part with a large and small combined slider, comprising a lower mold (1) for forming a patterned light-guiding structural part, characterized in that: The patterned light-guiding structural component molding lower mold (1) is provided with an embedded molding slide (2) capable of reciprocating linear motion in a vertical direction, a combined side molding component (3) is provided on the outer side of the embedded molding slide (2), the patterned light-guiding structural component molding lower mold (1) is provided with a straight top piece (4) that passes through the patterned light-guiding structural component molding lower mold (1) and is staggered with the embedded molding slide (2), the patterned light-guiding structural component molding lower mold (1) is provided with an injection molding diversion portion (5), and the injection molding diversion portion (5) is connected to the embedded molding slide (2).

2. The thick-walled patterned light guide structure according to claim 1, wherein the large and small combined sliders are ejected and demoulded in a secondary manner. The embedded molding slide (2) comprises two embedded molding slide blocks (6) arranged in a lower mold (1) for molding a patterned light-guiding structural member, and the tops of the embedded molding slide blocks (6) are provided with side molding surfaces (7).

3. The thick-walled patterned light-guiding structural component secondary ejection and demoulding mold structure with large and small combined sliders according to claim 2 is characterized in that: The lower mold (1) for forming the patterned light-guiding structural component is provided with two inner molding surfaces (8), and the inner molding surfaces (8) correspond to the positions of the side molding surfaces (7) and have matching shapes.

4. The thick-walled patterned light guide structure according to claim 3, wherein the large and small combined sliders are ejected and demoulded in a secondary manner. A plurality of slider straight top connecting rods (9) are provided at the bottom of the embedded molded slider (6), and the slider straight top connecting rods (9) and the straight top members (4) are arranged in a staggered manner.

5. The thick-walled patterned light guide structural part secondary ejection and demoulding mold structure with large and small combined sliders according to claim 4 is characterized in that: The combined side forming assembly (3) comprises a lower side auxiliary forming slide plate (10) and an upper side auxiliary forming slide plate (11) arranged on the outside of the embedded forming slider (6), and the lower side auxiliary forming slide plate (10) is in abutment with the embedded forming slider (6).

6. The thick-walled patterned light guide structural part secondary ejection and demoulding mold structure with large and small combined sliders according to claim 5 is characterized in that: An abutting cut-off cambered surface (12) is provided on the inner side of the lower side auxiliary forming slide plate (10), and the abutting cut-off cambered surface (12) is arranged opposite to the side forming surface (7).

7. The thick-walled patterned light-guiding structural member secondary ejection and demoulding mold structure with large and small combined sliders according to claim 6 is characterized in that: A side forming space (13) is formed between the lower side auxiliary forming slide plate (10) and the upper side auxiliary forming slide plate (11); a slide mold clamping protrusion (14) is provided on the lower side auxiliary forming slide plate (10); a slide mold clamping cavity (15) is provided in the upper side auxiliary forming slide plate (11); the slide mold clamping protrusion (14) and the slide mold clamping cavity (15) are snap-fitted.

8. The thick-walled patterned light-guiding structural member secondary ejection and demoulding mold structure with large and small combined sliders according to claim 7 is characterized in that: The straight top piece (4) comprises a plurality of middle straight top rods (16) arranged in the lower mold (1) for forming the patterned light guide structural piece. The middle straight top rods (16) pass through the lower mold (1) for forming the patterned light guide structural piece and are arranged opposite to the inner molding surface (8).

9. The thick-walled patterned light-guiding structural member secondary ejection and demoulding mold structure with large and small combined sliders according to claim 8, characterized in that: The injection molding diversion portion (5) comprises a main flow hole (17) and two diversion channels (18) arranged in the lower mold (1) for molding the patterned light-guiding structural component, and the diversion channels (18) are connected to the inner molding surface (8).

10. The secondary ejection and demoulding mold structure of large and small combined sliders for thick-walled patterned light-guiding structural parts according to claim 9, characterized in that: The lower die (1) for forming the patterned light-guiding structural component is provided with a lower die center clamping protrusion (19).

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