One-to-two injection mold for inner can cover of large garbage can

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a one-to-two injection mold for an inner can cover of a large garbage can. The forming die comprises a lower forming die for the inner can cover of the garbage can and an upper forming die for the inner can cover of the garbage can. In the injection molding process, the garbage can inner barrel cover forming lower mold and the garbage can inner barrel cover forming upper mold are close to each other, so that the inner barrel cover forming bulge and the inner barrel cover forming concave cavity abut against each other and are matched to form a complete mold cavity, and a molten material enters the mold cavity through the garbage can inner barrel cover forming upper mold; a plurality of hole groove structures of the inner can cover of the garbage can can be synchronously formed through the inner can cover hole groove forming assembly, secondary punching machining is not needed, the labor intensity of workers is greatly reduced, the working procedures are reduced, the quality of a plastic part is guaranteed, mold opening is conducted after injection molding is completed, the inner can cover hole groove forming assembly is moved towards the side away from the plastic part, and the production efficiency is improved. And the end ejection piece is matched with the ejection rod to eject the plastic piece in all directions, the plastic piece cannot interfere with the inner barrel cover hole groove forming assembly during ejection, ejection is smooth, and the situation that a shell is stuck is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a one-outlet two-outlet injection mold for an inner cover of a large garbage can. Background Art

[0002] The inner cover of a trash can is one of the indispensable parts of the trash can. It is generally made of plastic, and the inner cover and the trash can are generally a separate assembly structure. The existing injection mold for the inner cover of the trash can generally molds one plastic part at a time, and after the injection molding is completed, it is necessary to cooperate with the drilling equipment to perform secondary processing on the holes and grooves of the plastic part to facilitate subsequent assembly. There are many processes, the labor intensity is high, and multiple processes are easy to damage the plastic parts, making it difficult to ensure the quality of the plastic parts. Therefore, it is urgent to design a large-scale trash can inner cover one-out two-injection mold that can overcome the above defects.

[0003] In order to overcome the shortcomings of the prior art, people have proposed various solutions through continuous exploration. For example, a Chinese patent discloses a fast-cooling trash can mold [application number: 201510292238.0], which includes a fixed mold and a movable mold. The fixed mold is provided with a cavity for injection molding a trash can, and the movable mold is provided with a core that cooperates with the cavity. The fixed mold and the core are both provided with a first flow channel for the flow of coolant. The cavity includes a first injection molding part for injection molding a front top of the trash can, a second injection molding part for injection molding a hinged part of a flip cover of the trash can, and a third injection molding part for injection molding a roller installation part of the trash can. The first injection molding part, the second injection molding part, and the third injection molding part are all provided with grooves for injection molding corresponding parts of the trash can. The first injection molding part, the second injection molding part, and the third injection molding part are all made of beryllium bronze. The core includes a core insert made of beryllium bronze, and the core insert is located at the top of the core. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a one-outlet two-outlet injection mold for the inner cover of a large garbage can.

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

[0006] A one-outlet two-outlet injection mold for an inner bucket cover of a large trash can comprises a trash can inner bucket cover molding lower mold and a trash can inner bucket cover molding upper mold, wherein the trash can inner bucket cover molding lower mold is provided with two inner bucket cover molding protrusions which are symmetrical along the center of the trash can inner bucket cover molding lower mold, and the trash can inner bucket cover molding upper mold is provided with two inner bucket cover molding concave cavities which are symmetrical along the center of the trash can inner bucket cover molding upper mold, the inner bucket cover molding protrusions correspond to the positions of the inner bucket cover molding concave cavities and the shapes are matched, an injection molding diverter is provided between the trash can inner bucket cover molding lower mold and the trash can inner bucket cover molding upper mold, the trash can inner bucket cover molding lower mold is provided with an inner bucket cover hole groove molding component which can move along one end close to or away from the inner bucket cover molding protrusion, the trash can inner bucket cover molding lower mold is provided with an end ejector, and the inner bucket cover hole groove molding component and the end ejector are arranged alternately.

[0007] In the above-mentioned one-out-two injection mold for the inner cover of a large trash can, the inner cover hole groove forming assembly includes a side slide and an end slide arranged in the lower mold for forming the inner cover of the trash can, the side slide is provided with a side hole groove forming part, and the end slide is provided with an end hole groove forming part, and the side hole groove forming part and the end hole groove forming part respectively correspond to the positions of the inner cover forming protrusions.

[0008] In the above-mentioned one-out-two injection mold for the inner cover of a large trash can, the side hole groove forming part includes a side protrusion arranged on the side slide seat, and the side protrusion is provided with a side protrusion shaft on one side of the side protrusion close to the inner cover forming protrusion.

[0009] In the above-mentioned one-out-two injection mold for the inner cover of a large trash can, the end hole groove forming part includes an end protrusion arranged on the end slide seat, and the end protrusion is provided with an end protrusion shaft on one side close to the inner cover forming protrusion.

[0010] In the above-mentioned one-out-two injection mold for the inner cover of a large trash can, a side anti-warping pressing plate is provided in the lower mold for forming the inner cover of the trash can, and the side sliding seat is slidably matched with the side anti-warping pressing plate.

[0011] In the above-mentioned one-out-two injection mold for the inner cover of a large trash can, an end anti-warping pressing plate is provided in the lower mold for forming the inner cover of the trash can, and the end slide seat is slidably matched with the end anti-warping pressing plate.

[0012] In the above-mentioned large trash can inner cover one-out two-out injection mold, the end ejector includes a plurality of end ejector inserts arranged in the trash can inner cover molding lower mold, and the end ejector inserts are slidably matched with the trash can inner cover molding lower mold.

[0013] In the above-mentioned one-out-two injection mold for the inner cover of a large trash can, an injection main hole is provided in the upper mold for forming the inner cover of the trash can, and the injection main hole is connected to the injection diverter.

[0014] In the above-mentioned one-out-two injection mold for the inner cover of a large trash can, the injection molding diverter comprises an injection molding diverter plate arranged between the lower mold for molding the inner cover of the trash can and the upper mold for molding the inner cover of the trash can.

[0015] In the above-mentioned one-out-two injection mold for the inner cover of the large trash can, a plurality of straight top holes penetrating through the inner cover molding protrusion are provided in the inner cover molding protrusion.

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

[0017] 1. In the injection molding process, the utility model brings the lower mold for forming the inner bucket cover of the trash can and the upper mold for forming the inner bucket cover of the trash can close to each other, so that the molding protrusion of the inner bucket cover and the molding concave cavity of the inner bucket cover are abutted and matched to form a complete cavity, and the molten material enters the cavity through the upper mold for forming the inner bucket cover of the trash can, and the multiple hole and groove structures of the inner bucket cover of the trash can can be synchronously formed through the hole and groove molding component of the inner bucket cover, without the need for secondary punching processing, which greatly reduces the labor intensity, reduces the process, and ensures the quality of the plastic part. After the injection molding is completed, the mold is opened, the hole and groove molding component of the inner bucket cover is moved to the side away from the plastic part, and the plastic part is ejected in all directions through the end ejector and the ejector rod, and there is no interference with the hole and groove molding component of the inner bucket cover during ejection, and the ejection is smooth to avoid the problem of jamming.

[0018] 2. In the utility model, during the movement of the side slide, the side anti-warping pressing plate can prevent the side slide from warping up, thereby ensuring the accuracy of core pulling. During the movement of the end slide, the end anti-warping pressing plate can prevent the side slide from warping up, thereby ensuring the accuracy of core pulling.

[0019] Other advantages, objectives and features of the present invention will be embodied 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 schematic diagram of the utility model.

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

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

[0023] Figure 4 It is a structural schematic diagram of the upper die for forming the inner lid of a trash can.

[0024] In the figure: a lower mold 1 for forming an inner barrel cover of a trash can, an upper mold 2 for forming an inner barrel cover of a trash can, a molding protrusion 3 for forming an inner barrel cover, a molding cavity 4 for forming an inner barrel cover, an injection molded diverter 5, an inner barrel cover hole groove molding assembly 6, an end ejector 7, a side slide 8, an end slide 9, a side hole groove molding portion 10, an end hole groove molding portion 11, a side convex block 12, a side convex shaft 13, an end convex block 14, an end convex shaft 15, a side anti-warping pressing plate 16, an end anti-warping pressing plate 17, an end ejection insert 18, an injection molded main hole 19, an injection molded diverter plate 20, and a straight top hole 21. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings.

[0026] like Figure 1-4 As shown, a one-outlet two-outlet injection mold for an inner bucket cover of a large trash can comprises a trash can inner bucket cover molding lower mold 1 and a trash can inner bucket cover molding upper mold 2, wherein the trash can inner bucket cover molding lower mold 1 is provided with two inner bucket cover molding protrusions 3 which are symmetrical along the center of the trash can inner bucket cover molding lower mold 1, and the trash can inner bucket cover molding upper mold 2 is provided with two inner bucket cover molding concave cavities 4 which are symmetrical along the center of the trash can inner bucket cover molding upper mold 2, the inner bucket cover molding protrusions 3 correspond to the positions of the inner bucket cover molding concave cavities 4 and are matched in shape, an injection molding diverter 5 is provided between the trash can inner bucket cover molding lower mold 1 and the trash can inner bucket cover molding upper mold 2, an inner bucket cover hole groove molding component 6 which can move along one end close to or away from the inner bucket cover molding protrusion 3 is provided in the trash can inner bucket cover molding lower mold 1, an end ejector 7 is provided in the trash can inner bucket cover molding lower mold 1, and the inner bucket cover hole groove molding component 6 and the end ejector 7 are alternately arranged.

[0027] In this embodiment, during the injection molding process, the lower mold 1 for forming the inner bucket cover of the trash can and the upper mold 2 for forming the inner bucket cover of the trash can are brought close to each other, so that the inner bucket cover molding protrusion 3 and the inner bucket cover molding cavity 4 are abutted and matched to form a complete cavity, and the molten material enters the cavity through the upper mold 2 for forming the inner bucket cover of the trash can, and multiple hole and groove structures of the inner bucket cover of the trash can can be synchronously formed through the inner bucket cover hole and groove forming component 6, without the need for secondary punching processing, which greatly reduces the labor intensity, reduces the process, and ensures the quality of the plastic part. After the injection molding is completed, the mold is opened, the inner bucket cover hole and groove forming component 6 is moved to the side away from the plastic part, and the plastic part is ejected in all directions through the end ejector 7 in cooperation with the ejector rod. During ejection, there will be no interference with the inner bucket cover hole and groove forming component 6, and the ejection is smooth to avoid jamming.

[0028] Combination Figure 1-4As shown, the inner barrel cover hole groove forming assembly 6 includes a side slide 8 and an end slide 9 which are arranged in the trash can inner barrel cover forming lower mold 1, the side slide 8 is provided with a side hole groove forming part 10, and the end slide 9 is provided with an end hole groove forming part 11, and the side hole groove forming part 10 and the end hole groove forming part 11 respectively correspond to the positions of the inner barrel cover forming protrusion 3.

[0029] Specifically, during injection molding, the side hole groove forming part 10 on the side slide 8 and the end hole groove forming part 11 on the end slide 9 are used to synchronously form the side hole groove and end hole groove structure of the inner lid of the trash can, without the need for secondary punching processing, which greatly reduces the labor intensity, reduces the process, and ensures the quality of the plastic parts.

[0030] The side hole groove forming portion 10 includes a side protrusion 12 arranged on the side slide seat 8, and the side protrusion 12 is provided with a side protrusion shaft 13 on one side close to the inner barrel cover forming protrusion 3.

[0031] In this embodiment, during injection molding, the side protrusion 12 cooperates with the side protruding shaft 13 to synchronously form the side hole groove of the inner lid of the trash can. After the injection molding is completed, the mold is opened, the side slide 8 is moved, and the side protrusion 12 and the side protruding shaft 13 are removed from the plastic part to facilitate the next step of demolding.

[0032] Combination Figure 2 , Figure 3 As shown, the end hole groove forming portion 11 includes an end protrusion 14 arranged on the end slide seat 9, and the end protrusion 14 is provided with an end protrusion shaft 15 on one side close to the inner barrel cover forming protrusion 3.

[0033] In this embodiment, during injection molding, the end protrusion 14 cooperates with the end protrusion shaft 15 to synchronously form the side hole groove of the inner lid of the trash can. After the injection molding is completed, the mold is opened, the end slide 9 is moved, and the end protrusion 14 and the end protrusion shaft 15 are removed from the plastic part to facilitate the next step of demolding.

[0034] The lower mold 1 for forming the inner cover of the trash can is provided with a side anti-warping pressing plate 16 , and the side sliding seat 8 is slidably matched with the side anti-warping pressing plate 16 .

[0035] In this embodiment, during the movement of the side slide 8, the side anti-warping pressing plate 16 can prevent the side slide 8 from warping up, thereby ensuring the accuracy of core pulling.

[0036] Combination Figure 1 , Figure 2 As shown, the lower mold 1 for forming the inner cover of the trash can is provided with an end anti-warping pressing plate 17, and the end slide seat 9 is slidably matched with the end anti-warping pressing plate 17.

[0037] In this embodiment, during the movement of the end slide 9, the end anti-warping pressing plate 17 can prevent the side slide 8 from warping up, thereby ensuring the accuracy of core pulling.

[0038] The end ejector 7 includes a plurality of end ejector inserts 18 disposed in the lower mold 1 for forming the inner cover of the trash can, and the end ejector inserts 18 are slidably matched with the lower mold 1 for forming the inner cover of the trash can.

[0039] In this embodiment, after the injection molding is completed, the mold is opened, and the end of the plastic part can be ejected through the end ejection insert 18, with a large ejection area and a wide ejection range.

[0040] Combination Figure 1-3 As shown, the trash can inner bucket cover molding upper mold 2 is provided with an injection main hole 19, and the injection main hole 19 is connected with the injection diverter 5. The injection diverter 5 includes an injection diverter plate 20 arranged between the trash can inner bucket cover molding lower mold 1 and the trash can inner bucket cover molding upper mold 2.

[0041] In this embodiment, during injection molding, the molten material is injected into the injection molding diverter plate 20 through the injection molding main hole 19 in the upper mold 2 for molding the inner lid of the trash can, and then diverted by the injection molding diverter plate 20, thereby accelerating the injection molding efficiency.

[0042] Combination Figure 1-2 As shown, the inner barrel cover molding protrusion 3 is provided with a plurality of straight top holes 21 penetrating through the inner barrel cover molding protrusion 3 .

[0043] In this embodiment, during the demoulding process, the straight ejection hole 21 cooperates with the straight ejection rod to eject the plastic part.

[0044] The working principle of the utility model is:

[0045] During the injection molding process, the lower mold 1 for forming the inner bucket cover of the trash can and the upper mold 2 for forming the inner bucket cover of the trash can are brought close to each other, so that the inner bucket cover molding protrusion 3 and the inner bucket cover molding cavity 4 are abutted and matched to form a complete cavity, and the molten material is injected into the injection molding diverter plate 20 through the injection molding main hole 19 in the upper mold 2 for forming the inner bucket cover of the trash can, and then diverted through the injection molding diverter plate 20, thereby accelerating the injection molding efficiency, and the side protrusion 12 cooperates with the side protrusion shaft 13 to synchronously form the side hole groove of the inner bucket cover of the trash can, and the end protrusion 14 cooperates with the end protrusion shaft 15 to synchronously form the side hole groove of the inner bucket cover of the trash can, without the need for secondary punching processing, which greatly reduces the labor intensity, reduces the process, and ensures the quality of the plastic part. After the injection molding is completed, the mold is opened, the side slide 8 is moved, and the side protrusion 12 and the side protrusion shaft 13 are pulled out from the plastic part, and the end slide 9 is moved to pull the end protrusion 14 and the end protrusion shaft 15 out of the plastic part, which is convenient for the next step of demoulding.

[0046] During the movement of the side slide 8, the side anti-warping pressing plate 16 can prevent the side slide 8 from warping up, ensuring the accuracy of core pulling. During the movement of the end slide 9, the end anti-warping pressing plate 17 can prevent the side slide 8 from warping up, ensuring the accuracy of core pulling.

[0047] After the injection molding is completed, the mold is opened, and the end of the plastic part can be ejected through the end ejection insert 18. During the demoulding process, the straight ejection hole 21 cooperates with the straight ejector rod to eject the plastic part, with a large ejection area and a wide ejection range.

[0048] 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 in similar ways without departing from the spirit of the present invention.

[0049] Although the present invention uses the terms such as the lower mold 1 for forming the inner cover of the trash can, the upper mold 2 for forming the inner cover of the trash can, the inner cover molding protrusion 3, the inner cover molding cavity 4, the injection molding diverter 5, the inner cover hole groove molding assembly 6, the end ejector 7, the side slide 8, the end slide 9, the side hole groove molding part 10, the end hole groove molding part 11, the side convex block 12, the side convex shaft 13, the end convex block 14, the end convex shaft 15, the side anti-warping pressing plate 16, the end anti-warping pressing plate 17, the end ejection insert 18, the injection molding main hole 19, the injection molding diverter plate 20, the straight top hole 21, etc. more frequently, 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 utility model, and interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A two-injection mold for a large trash can inner cover, comprising a trash can inner cover molding lower mold (1) and a trash can inner cover molding upper mold (2), characterized in that: The trash can inner barrel cover molding lower mold (1) is provided with two inner barrel cover molding protrusions (3) symmetrically along the center of the trash can inner barrel cover molding lower mold (1), and the trash can inner barrel cover molding upper mold (2) is provided with two inner barrel cover molding concave cavities (4) symmetrically along the center of the trash can inner barrel cover molding upper mold (2). The inner barrel cover molding protrusions (3) correspond to the positions of the inner barrel cover molding concave cavities (4) and are matched in shape. An injection molding diverter (5) is provided between the trash can inner barrel cover molding lower mold (1) and the trash can inner barrel cover molding upper mold (2). The trash can inner barrel cover molding lower mold (1) is provided with an inner barrel cover hole groove molding component (6) that can move along one end close to or away from the inner barrel cover molding protrusion (3). The trash can inner barrel cover molding lower mold (1) is provided with an end ejector (7), and the inner barrel cover hole groove molding component (6) and the end ejector (7) are arranged alternately.

2. The one-outlet-two-outlet injection mold for the inner cover of a large trash can according to claim 1, characterized in that: The inner barrel cover hole groove forming assembly (6) comprises a side slide (8) and an end slide (9) which are arranged in the trash can inner barrel cover forming lower mold (1), the side slide (8) is provided with a side hole groove forming part (10), and the end slide (9) is provided with an end hole groove forming part (11), and the side hole groove forming part (10) and the end hole groove forming part (11) respectively correspond to the positions of the inner barrel cover forming protrusion (3).

3. The one-outlet-two-outlet injection mold for the inner cover of a large trash can according to claim 2, characterized in that: The side hole groove forming portion (10) comprises a side protrusion (12) arranged on the side slide seat (8), and the side protrusion (12) is provided with a side protrusion shaft (13) on a side close to the inner barrel cover forming protrusion (3).

4. The one-outlet-two-outlet injection mold for the inner cover of a large trash can according to claim 3, characterized in that: The end hole groove forming portion (11) comprises an end protrusion (14) arranged on the end slide seat (9), and the end protrusion (14) is provided with an end protrusion shaft (15) on one side close to the inner barrel cover forming protrusion (3).

5. The one-outlet-two-outlet injection mold for the inner cover of a large trash can according to claim 4, characterized in that: A side anti-warping pressing plate (16) is provided inside the trash can inner lid forming lower mold (1), and the side sliding seat (8) is slidably matched with the side anti-warping pressing plate (16).

6. The one-outlet-two-outlet injection mold for the inner cover of a large trash can according to claim 5, characterized in that: An end anti-warping pressing plate (17) is provided in the lower mold (1) for forming the inner lid of the trash can, and the end sliding seat (9) is slidably matched with the end anti-warping pressing plate (17).

7. The one-outlet-two-outlet injection mold for the inner cover of a large trash can according to claim 1, characterized in that: The end ejector (7) comprises a plurality of end ejector inserts (18) arranged in a lower mold (1) for forming an inner lid of the trash can, and the end ejector inserts (18) are slidably matched with the lower mold (1) for forming an inner lid of the trash can.

8. The one-outlet-two-outlet injection mold for the inner cover of a large trash can according to claim 1, characterized in that: An injection molding main hole (19) is provided in the trash can inner lid molding upper mold (2), and the injection molding main hole (19) is connected to the injection molding diverter (5).

9. The one-outlet-two-outlet injection mold for the inner cover of a large trash can according to claim 8, characterized in that: The injection molded flow divider (5) comprises an injection molded flow divider plate (20) arranged between a lower mold (1) for molding the inner lid of the garbage can and an upper mold (2) for molding the inner lid of the garbage can.

10. The one-outlet-two-outlet injection mold for the inner cover of a large trash can according to claim 9, characterized in that: The inner barrel cover forming protrusion (3) is provided with a plurality of straight top holes (21) penetrating through the inner barrel cover forming protrusion (3).

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