Inverted mechanism of through type tail lampshade injection mold

Abstract

The utility model belongs to the technical field of molds, and relates to an inverted mechanism of a through type tail lampshade injection mold. The through type tail lamp shade forming upper die comprises a through type tail lamp shade forming upper die. In the injection molding process, the penetrating type tail lampshade forming upper mold and the lower mold matched with the penetrating type tail lampshade forming upper mold are combined, the lampshade forming embedding base and the lower mold are matched to form a complete cavity, molten materials are injected into the cavity through the injection molding communication part, and one lampshade forming embedding base is provided with a symmetrical lampshade forming structure; the two lampshade forming embedding bases can synchronously form four penetrating type tail lampshade plastic parts, mold opening is conducted after injection molding is completed, the formed plastic parts are ejected out from top to bottom through the inverted ejection demolding assembly, inverted top ejection is adopted, the thickness of the lower mold part is greatly reduced, and therefore the overall thickness of the mold is reduced, and the purpose of reducing the size of the mold is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to an inverted structure of a through-type taillight cover injection mold. Background Art

[0002] The effect of car taillights plays a very important role in the driving process of the car. The measurement of its illumination is an important standard for cross-beam car taillights. The commonly used car taillights are very important for warning vehicles driving behind. The car lampshade directly affects the lighting effect of the taillights. With the continuous development of the automobile industry, more and more models have begun to use through-type taillights, which can provide more light and higher recognition. The through-type taillight cover requires the use of injection molds. The injection molding machine is used to inject the plastic solution into the mold cavity between the fixed mold and the frozen film. After cooling and forming, it is demolded and the finished product is taken out. During the injection molding process of the existing through-type taillight cover mold, the ejector structure is generally located on the other side of the injection side, that is, the injection side is on the top and the ejector side is on the bottom. This structure requires a certain amount of space and thickness to place the injection plate, injection tube and other structures on the injection side. The ejector side located on the bottom also requires additional space and thickness to place the ejector rod and ejector block for ejection within a certain stroke. This will result in a thicker overall mold thickness and a larger mold volume, which is inconvenient for staff to perform subsequent maintenance and replacement. Therefore, it is urgent to design a through-type taillight cover injection mold inverted structure that can overcome the above defects.

[0003] In order to overcome the shortcomings of the existing technology, people have proposed various solutions through continuous exploration. For example, a Chinese patent discloses an injection mold for a car taillight cover [application number: 202220386757.9], which includes a base, and a lower mold is installed on the top of the base through a first mounting plate mechanism. Support mechanisms are installed at both ends of the top of the first mounting plate mechanism, and a second mounting plate mechanism is installed on the top of the support mechanism. The support mechanism includes a support column, which is a hollow cylindrical structure, and a slide groove is provided on both sides of the support column. Summary of the Invention

[0004] The purpose of the utility model is to solve the above problems and provide an inverted structure for the injection mold of a through-type taillight cover.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A through-type taillight cover injection mold inverted mechanism, including a through-type taillight cover molding upper mold, two lampshade molding inserts are provided in the through-type taillight cover molding upper mold, the bottom of the lampshade molding inserts have a symmetrical lampshade molding structure, an injection molding connecting portion is provided in the lampshade molding insert, the injection molding connecting portion passes through the lampshade molding insert, the injection molding connecting portion corresponds to the position of the symmetrical lampshade molding structure, an inverted ejection demolding component is provided above the through-type taillight cover molding upper mold, and the inverted ejection demolding component and the injection molding connecting portion are staggered.

[0007] In the above-mentioned inverted mechanism of the through-type taillight cover injection mold, the inverted ejection demoulding assembly includes a plurality of upper ejection demoulding rods arranged above the through-type taillight cover molding upper mold, and the upper ejection demoulding rods pass through the symmetrical lampshade molding structure.

[0008] In the above-mentioned through-type tail lamp cover injection mold flip-up mechanism, the symmetrical lamp cover molding structure is provided with an embedded lamp cover edge ejector, and the embedded lamp cover edge ejector corresponds to the side of the symmetrical lamp cover molding structure.

[0009] In the above-mentioned inverted mechanism of the through-type taillight cover injection mold, the embedded lampshade edge ejection part includes a plurality of inner ejection inserts and outer ejection inserts arranged in the symmetrical lampshade molding structure, and the side ejection inserts and outer ejection inserts are respectively slidably matched with the lampshade molding seat.

[0010] In the above-mentioned through-type taillight cover injection mold inverted mechanism, the symmetrical lampshade molding structure includes two lampshade molding protrusions arranged at the bottom of the lampshade molding insert, the lampshade molding protrusion includes a middle convex strip, a side convex wall and a side bottom surface, and the upper ejection demolding rod passes through the side bottom surface.

[0011] In the above-mentioned inverted structure of the injection mold for the through-type taillight cover, the inner ejection block corresponds to the position of the side bottom surface, and the outer ejection block corresponds to the position of the side convex wall.

[0012] In the above-mentioned inverted structure of the through-type taillight cover injection mold, a plurality of first groove forming protrusions are provided between the side convex wall and the middle convex strip, and a plurality of second groove forming protrusions are provided between the side bottom surface and the middle convex strip.

[0013] In the above-mentioned inverted structure of the injection mold for the through-type taillight cover, the second groove forming protrusion and the upper ejection demoulding rod are arranged alternately.

[0014] In the above-mentioned through-type tail lamp cover injection mold flip-up structure, the injection-molded connecting portion includes a plurality of injection-molded straight-through holes provided in the lamp cover molding insert.

[0015] In the above-mentioned inverted structure of the through-type tail lamp cover injection mold, both ends of the lamp cover molding protrusion are provided with spliced end molding ejection blocks, and the spliced end molding ejection blocks are in contact with the lamp cover molding protrusion.

[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 upper mold for forming the through-type taillight cover is matched with the corresponding lower mold, and the lampshade molding insert cooperates with the lower mold to form a complete cavity. The molten material is injected into the cavity through the injection molding connecting portion. One lampshade molding insert has a symmetrical lampshade molding structure. Two lampshade molding inserts can simultaneously mold four through-type taillight cover plastic parts. After the injection molding is completed, the mold is opened, and the molded plastic part is ejected from top to bottom through the inverted ejection demoulding assembly. The inverted top ejection is adopted, which greatly reduces the thickness of the lower mold part, thereby reducing the overall thickness of the mold and achieving the purpose of reducing the mold volume.

[0018] 2. The spliced end-molding ejector block in the present invention is used to assist in molding the two end structures of the plastic part. After the injection molding is completed, the two ends of the plastic part can be ejected synchronously by moving the spliced end-molding ejector block to avoid ejection dead angles.

[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 structural diagram of the utility model in another direction.

[0022] Figure 3 It is a structural diagram of a lampshade molding insert.

[0023] Figure 4 It is a structural diagram of the lampshade molding insert in another direction.

[0024] Figure 5 It is a partial structural diagram of the utility model.

[0025] In the figure: a through-type taillight cover molding upper mold 1, a lampshade molding insert 2, a symmetrical lampshade molding structure 3, an injection molding connecting part 4, an inverted ejection demolding component 5, an upper ejection demolding rod 6, an embedded lampshade edge ejector 7, an inner ejection insert 8, an outer ejection insert 9, a lampshade molding protrusion 10, a middle convex strip 11, a side convex wall 12, a side bottom surface 13, a first groove molding protrusion 14, a second groove molding protrusion 15, an injection molding straight-through hole 16, and a spliced end molding ejection block 17. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] like Figure 1-5 As shown, a through-type taillight cover injection mold inverted mechanism includes a through-type taillight cover molding upper mold 1, two lampshade molding inserts 2 are provided in the through-type taillight cover molding upper mold 1, the bottom of the lampshade molding insert 2 has a symmetrical lampshade molding structure 3, an injection molding connecting part 4 is provided in the lampshade molding insert 2, the injection molding connecting part 4 passes through the lampshade molding insert 2, the injection molding connecting part 4 corresponds to the position of the symmetrical lampshade molding structure 3, and an inverted ejection demolding component 5 extending into the lampshade molding insert 2 is provided above the through-type taillight cover molding upper mold 1, and the inverted ejection demolding component 5 and the injection molding connecting part 4 are staggered.

[0028] In this embodiment, during the injection molding process, the through-type taillight cover molding upper mold 1 is combined with the matching lower mold, and the lampshade molding insert 2 cooperates with the lower mold to form a complete cavity. The molten material is injected into the cavity through the injection molding connecting part 4. A lampshade molding insert 2 has a symmetrical lampshade molding structure 3. Two lampshade molding inserts 2 can simultaneously mold four through-type taillight cover plastic parts. After the injection molding is completed, the mold is opened, and the molded plastic part is ejected from top to bottom through the inverted ejection demolding component 5. The inverted upper ejection is adopted, which greatly reduces the thickness of the lower mold part, thereby reducing the overall thickness of the mold and achieving the purpose of reducing the mold volume.

[0029] Combine Figure 1-5 As shown, the flip-chip ejection demoulding assembly 5 includes a plurality of upper ejection demoulding rods 6 arranged above the through-type tail lamp cover molding upper mold 1, and the upper ejection demoulding rods 6 pass through the symmetrical lamp cover molding structure 3.

[0030] Specifically, after the injection molding is completed, the mold is opened, and the molded plastic part is ejected from top to bottom by the upper ejection demoulding rod 6. The inverted upper ejection method greatly reduces the thickness of the lower mold part, thereby reducing the overall thickness of the mold and achieving the purpose of reducing the mold volume.

[0031] Combine Figure 1 、 Figure 5As shown, the symmetrical lampshade forming structure 3 is provided with an embedded lampshade edge ejector 7 , and the embedded lampshade edge ejector 7 corresponds to the side of the symmetrical lampshade forming structure 3 .

[0032] In this embodiment, the mold is opened after the injection molding is completed, and the edge of the molded plastic part can be synchronously ejected from the mold through the embedded lampshade edge ejector 7. Combined with the upper ejection demolding rod 6, the ejection area and ejection range are increased, and the ejection is smoother.

[0033] The embedded lampshade edge ejector 7 includes a plurality of inner ejection inserts 8 and outer ejection inserts 9 arranged in the symmetrical lampshade forming structure 3, and the inner ejection inserts 8 and outer ejection inserts 9 are respectively slidably matched with the lampshade forming insert 2.

[0034] In this embodiment, after the injection molding is completed, the mold is opened, and the edges of the molded plastic part can be simultaneously ejected and demolded through the inner ejection block 8 and the outer ejection block 9. Combined with the upper ejection demolding rod 6, the ejection area and ejection range are increased, and the ejection is smoother.

[0035] Combine Figure 3-5 As shown, the symmetrical lampshade molding structure 3 includes two lampshade molding protrusions 10 arranged at the bottom of the lampshade molding seat 2, and the lampshade molding protrusion 10 includes a central protrusion 11, a side protrusion wall 12 and a side bottom surface 13, and the upper ejection demolding rod 6 passes through the side bottom surface 13.

[0036] In this embodiment, during the injection molding process, the central convex strip 11 is used to form the central groove structure of the plastic part, and the side convex walls 12 and the side bottom surface 13 are used to form the two side structures of the plastic part.

[0037] The inner ejection insert 8 corresponds to the position of the side bottom surface 13, the outer ejection insert 9 corresponds to the position of the side convex wall 12, a plurality of first groove forming protrusions 14 are provided between the side convex wall 12 and the middle convex strip 11, and a plurality of second groove forming protrusions 15 are provided between the side bottom surface 13 and the middle convex strip 11.

[0038] In this embodiment, the first groove forming protrusion 14 and the second groove forming protrusion 15 are used to form the groove structure of the plastic part twice, without the need for secondary processing, thus shortening the process.

[0039] Combine Figure 1 As shown, the second groove forming protrusion 15 and the upper ejection demoulding rod 6 are arranged alternately.

[0040] In this embodiment, the second groove forming protrusions 15 and the upper ejection demoulding rods 6 are arranged alternately, so that the formed grooves will not be damaged by the upper ejection demoulding rods 6, and the structure is compact and reasonable.

[0041] Combine Figure 1 、 Figure 3 As shown, the injection-molded connecting portion 4 includes a plurality of injection-molded straight-through holes 16 provided in the lampshade molding insert 2 .

[0042] In this embodiment, the molten material is injected into the mold cavity through the injection through hole 16 .

[0043] Combine Figure 1 、 Figure 5 As shown, both ends of the lampshade forming protrusion 10 are provided with spliced end forming ejection blocks 17 , and the spliced end forming ejection blocks 17 are fitted with the lampshade forming protrusion 10 .

[0044] In this embodiment, the spliced end-molding ejector block 17 is used to assist in molding the two end structures of the plastic part. After the injection molding is completed, the two ends of the plastic part can be ejected synchronously by moving the spliced end-molding ejector block 17 to avoid ejection dead angles.

[0045] The working principle of this utility model is:

[0046] During the injection molding process, the through-type taillight cover molding upper mold 1 is matched with the matching lower mold, and the lampshade molding insert 2 cooperates with the lower mold to form a complete cavity. The molten material is injected into the cavity through the injection straight-through hole 16. One lampshade molding insert 2 has a symmetrical lampshade molding structure 3. Two lampshade molding inserts 2 can simultaneously mold four through-type taillight cover plastic parts. After the injection molding is completed, the mold is opened. After the injection molding is completed, the mold is opened and the molded plastic part is ejected from top to bottom by the upper ejection demoulding rod 6. The inverted upper ejection is adopted, which greatly reduces the thickness of the lower mold part, thereby reducing the overall thickness of the mold and achieving the purpose of reducing the mold volume.

[0047] After the injection molding is completed, the mold is opened and the edges of the molded plastic parts can be ejected synchronously through the inner ejection insert 8 and the outer ejection insert 9. In combination with the ejection rod 6, the ejection area and ejection range are increased, making the ejection smoother.

[0048] During the injection molding process, the middle convex strip 11 is used to form the middle groove structure of the plastic part, the side convex wall 12 and the side bottom surface 13 are used to form the two side structures of the plastic part, and the first groove forming protrusion 14 and the second groove forming protrusion 15 are used to form the groove structure of the plastic part twice, without the need for secondary processing, shortening the process.

[0049] The second groove forming protrusion 15 is staggered with the upper ejection demoulding rod 6, so that the formed groove will not be damaged by the upper ejection demoulding rod 6, and the structure is compact and reasonable.

[0050] The spliced end-molding ejector block 17 is used to assist in molding the two end structures of the plastic part. After the injection molding is completed, the two ends of the plastic part can be ejected synchronously by moving the spliced end-molding ejector block 17 to avoid ejection dead angles.

[0051] 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.

[0052] Although this document frequently uses terms such as through-type taillight cover molding upper mold 1, lampshade molding insert 2, symmetrical lampshade molding structure 3, injection molding connecting portion 4, inverted ejection demolding component 5, upper ejection demolding rod 6, embedded lampshade edge ejector 7, inner side ejection insert 8, outer side ejection insert 9, lampshade molding protrusion 10, middle ridge 11, side convex wall 12, side bottom surface 13, first groove molding protrusion 14, second groove molding protrusion 15, injection molding straight-through hole 16, and spliced end molding ejector block 17, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention. Interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A through-type taillight cover injection mold inverted structure, comprising a through-type taillight cover molding upper mold (1), characterized in that: Two lampshade forming seats (2) are provided in the through-type taillight cover forming upper mold (1), the bottom of the lampshade forming seat (2) has a symmetrical lampshade forming structure (3), an injection molding connecting portion (4) is provided in the lampshade forming seat (2), the injection molding connecting portion (4) passes through the lampshade forming seat (2), the injection molding connecting portion (4) corresponds to the position of the symmetrical lampshade forming structure (3), and an inverted ejection demoulding component (5) extending into the lampshade forming seat (2) is provided above the through-type taillight cover forming upper mold (1), and the inverted ejection demoulding component (5) and the injection molding connecting portion (4) are staggered.

2. The inverted structure of the injection mold for the through-type taillight cover according to claim 1, characterized in that: The inverted ejection demoulding assembly (5) comprises a plurality of upper ejection demoulding rods (6) arranged above a through-type tail lamp cover forming upper mold (1), wherein the upper ejection demoulding rods (6) penetrate through the symmetrical lamp cover forming structure (3).

3. The inverted structure of the injection mold for the through-type taillight cover according to claim 2, characterized in that: An embedded lampshade edge ejector (7) is provided in the symmetrical lampshade forming structure (3), and the embedded lampshade edge ejector (7) corresponds to the side of the symmetrical lampshade forming structure (3).

4. The inverted structure of the injection mold for the through-type taillight cover according to claim 3, characterized in that: The embedded lampshade edge ejector (7) comprises a plurality of inner ejector inserts (8) and outer ejector inserts (9) arranged in a symmetrical lampshade forming structure (3), wherein the inner ejector inserts (8) and the outer ejector inserts (9) are respectively slidably matched with the lampshade forming insert (2).

5. The through-type taillight cover injection mold inverted structure according to claim 4, characterized in that: The symmetrical lampshade forming structure (3) comprises two lampshade forming protrusions (10) arranged at the bottom of the lampshade forming insert (2), the lampshade forming protrusions (10) comprising a central protrusion (11), a side protrusion wall (12) and a side bottom surface (13), and the upper ejection demoulding rod (6) passes through the side bottom surface (13).

6. The inverted structure of the injection mold for the through-type taillight cover according to claim 5, characterized in that: The inner side ejection insert (8) corresponds to the position of the side bottom surface (13), and the outer side ejection insert (9) corresponds to the position of the side convex wall (12).

7. The inverted structure of the injection mold for the through-type taillight cover according to claim 6, characterized in that: A plurality of first groove forming protrusions (14) are provided between the side convex wall (12) and the middle convex strip (11), and a plurality of second groove forming protrusions (15) are provided between the side bottom surface (13) and the middle convex strip (11).

8. The inverted structure of the injection mold for the through-type taillight cover according to claim 7, characterized in that: The second groove forming protrusion (15) and the upper ejection demoulding rod (6) are arranged alternately.

9. The through-type taillight cover injection mold flip-up mechanism according to claim 8, characterized in that: The injection-molded connecting portion (4) comprises a plurality of injection-molded straight-through holes (16) arranged in the lampshade molding insert (2).

10. The inverted structure of the injection mold for the through-type taillight cover according to claim 9, characterized in that: Spliced end-molding ejection blocks (17) are provided at both ends of the lampshade molding protrusion (10), and the spliced end-molding ejection blocks (17) are fitted with the lampshade molding protrusion (10).

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