Precise injection molding mold for plastic folding storage box

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a precise injection molding mold for a plastic folding storage box. The folding storage box forming mold comprises a folding storage box forming lower mold and a folding storage box forming upper mold, and an injection molding piece is arranged above the folding storage box forming upper mold. In the injection molding process, the upper molding part and the lower molding part are attached to form a complete cavity, molten materials are injected into the cavity through the injection molding part, the semi-open type cavity grooves in the two sides of the molded part are synchronously molded through the semi-open type side groove molding demolding part, and the clamping groove face molding ejection demolding assembly is used for synchronously molding the clamping groove face of the molded part. After injection molding is completed, the semi-open type side groove forming demolding part moves outwards, then the formed plastic part is ejected out through the clamping groove face forming ejection demolding assembly, secondary finish machining does not need to be conducted on a cavity groove and a clamping groove face of the plastic part, the working procedure is shortened, meanwhile, the ejection structure is compact and reasonable, the space utilization rate is increased, and the overall size of the mold is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds and relates to a precision injection molding mold for a plastic folding storage box. Background Art

[0002] Plastic folding storage boxes are mainly used for storage and classification in daily life, and are good things for home life. They are generally injection molded using injection molds. During the injection molding process, it is difficult for the existing storage box injection molds to simultaneously mold the semi-open cavities and card slot surfaces on both sides of the plastic parts. The plastic parts need to be processed twice, and there are many processes. At the same time, the molding structure is separated from the ejection structure, and the space utilization rate is poor, resulting in a large overall volume of the mold. Therefore, it is urgent to design a plastic folding storage box precision injection molding 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 storage box mold [application number: 201520917032.8], which includes a movable mold and a fixed mold. The movable mold is provided with a core pulling block and a core block. A handle mold cavity for injection molding a handle is formed between the core pulling block and the core block. An opening groove for replacing the handle mold cavity is provided on the core pulling block. The upper end of the opening groove is open, and a plurality of sliding grooves are provided in the opening groove. A handle mold cavity block for injection molding a handle is slidably provided in the opening groove, and a plurality of springs are provided between the opening groove and the handle mold cavity block. The handle mold cavity block is provided with a groove for contacting with the spring. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a precision injection molding die for a plastic foldable storage box.

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

[0006] A plastic folding storage box precision injection molding mold, including a folding storage box molding lower mold and a folding storage box molding upper mold, an injection molded part is arranged above the folding storage box molding upper mold, a mold clamping protrusion is arranged at the bottom of the folding storage box molding upper mold, the bottom of the mold clamping protrusion has a molding upper part, a mold clamping cavity is arranged in the folding storage box molding lower mold, a molding lower part is arranged in the mold clamping cavity, the molding upper part corresponds to the molding lower part in position and matches in shape, a semi-open side groove molding demolding part and a slot surface molding ejection demolding component are also arranged in the folding storage box molding lower mold, and the semi-open side groove molding demolding part and the slot surface molding ejection demolding component respectively correspond to the position of the molding lower part.

[0007] In the above-mentioned plastic folding storage box precision injection molding mold, the groove surface molding ejection demolding component includes a first inclined ejector rod arranged in the folding storage box molding lower mold, and the outer side of the first inclined ejector rod has a groove surface molding protrusion, and the groove surface molding protrusion corresponds to the position of the molding lower part.

[0008] In the above-mentioned precision injection molding mold for the plastic foldable storage box, an inner concave surface is formed between the groove surface molding protrusion and the first inclined ejection rod.

[0009] In the above-mentioned plastic folding storage box precision injection molding mold, the semi-open side groove molding demolding part includes two side demolding slides arranged in the folding storage box molding lower mold, and two limiting connecting blocks are provided on the side demolding slide. The limiting connecting block is provided with a side groove molding part at one end away from the side demolding slide.

[0010] In the above-mentioned plastic folding storage box precision injection molding mold, the side groove molding part includes a first molding transverse plate and a second molding transverse plate arranged at one end of the limiting connecting block away from the side demolding slide, and the first molding transverse plate and the second molding transverse plate are parallel to each other.

[0011] In the above-mentioned precision injection molding mold for the plastic foldable storage box, a convex molding groove is formed between the first molding transverse plate and the second molding transverse plate.

[0012] In the above-mentioned precision injection molding mold for the plastic foldable storage box, the width of the first molding transverse plate is smaller than the width of the second molding transverse plate.

[0013] In the above-mentioned plastic folding storage box precision injection molding mold, a plurality of second inclined ejector rods are further provided in the folding storage box molding lower mold, and the tops of the second inclined ejector rods are provided with large-area ejector plates.

[0014] In the above-mentioned precision injection molding mold for the plastic folding storage box, a plurality of straight ejector rods are also provided in the lower molding mold for the folding storage box.

[0015] In the above-mentioned precision injection molding mold for the plastic folding storage box, the injection molded part includes an injection molding main board arranged above the folding storage box molding upper mold, and the injection molding main board has an injection molding main hole.

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

[0017] 1. In the injection molding process of the utility model, the folding storage box molding lower mold and the folding storage box molding upper mold are brought close to each other, so that the mold protrusion and the mold cavity are closely attached, the molding upper part and the molding lower part are attached to form a complete cavity, and the molten material is injected into the cavity through the injection molding part, and the semi-open side groove molding demolding parts are used to synchronously mold the semi-open cavity grooves on both sides of the plastic part, and the groove surface molding ejection demolding components are used to synchronously mold the groove surface of the plastic part. After the injection molding is completed, the semi-open side groove molding demolding parts are moved outward, and then the molded plastic part is ejected by the groove surface molding ejection demolding components, and there is no need to perform secondary finishing on the cavity groove and the groove surface of the plastic part, which shortens the process. At the same time, the ejection structure is compact and reasonable, which improves the space utilization rate and reduces the overall volume of the mold.

[0018] 2. In the injection molding process of the utility model, the first molding transverse plate and the second molding transverse plate cooperate with each other to assist in molding the semi-open cavity grooves on both sides of the plastic part, and the convex strip molding groove is used to synchronously mold the convex strip structure on the side of the plastic part.

[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 a semi-open side groove forming demoulding part.

[0024] Figure 5 It is a structural schematic diagram of the upper mold for forming a folding storage box.

[0025] In the figure: a folding storage box molding lower mold 1, a folding storage box molding upper mold 2, an injection molded part 3, a mold clamping protrusion 4, a molding upper part 5, a mold clamping cavity 6, a molding lower part 7, a semi-open side groove molding demolding part 8, a slot surface molding ejection demolding component 9, a first inclined ejector rod 10, a slot surface molding protrusion 11, an inner concave surface 12, a side demolding slide 13, a limiting connecting block 14, a side groove molding part 15, a first molding cross plate 16, a second molding cross plate 17, a convex strip molding groove 18, a second inclined ejector rod 19, a large-area ejector plate 20, a straight ejector rod 21, an injection molding main board 22, and an injection molding main hole 23. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings.

[0027] like Figure 1-5 As shown, a precision injection molding mold for a plastic folding storage box comprises a folding storage box molding lower mold 1 and a folding storage box molding upper mold 2, an injection molded part 3 is arranged above the folding storage box molding upper mold 2, a mold clamping protrusion 4 is arranged at the bottom of the folding storage box molding upper mold 2, a molding upper part 5 is arranged at the bottom of the mold clamping protrusion 4, a molding lower part 7 is arranged in the bottom of the folding storage box molding lower mold 1, a mold clamping cavity 6 is arranged in the mold clamping cavity 6, the molding upper part 5 corresponds to the molding lower part 7 in position and matches in shape, a semi-open side groove molding demolding part 8 and a slot surface molding ejection demolding component 9 are also arranged in the folding storage box molding lower mold 1, the semi-open side groove molding demolding part 8 and the slot surface molding ejection demolding component 9 correspond to the position of the molding lower part 7 respectively.

[0028] In this embodiment, during the injection molding process, the folding storage box molding lower mold 1 and the folding storage box molding upper mold 2 are brought close to each other, so that the mold protrusion 4 and the mold cavity 6 are in close contact, and the molding upper part 5 and the molding lower part 7 are in close contact to form a complete cavity, and the molten material is injected into the cavity through the injection molding part 3, and the semi-open side groove molding demolding part 8 is used to synchronously mold the semi-open cavity grooves on both sides of the plastic part, and the groove surface molding ejection demolding component 9 is used to synchronously mold the groove surface of the plastic part. After the injection molding is completed, the semi-open side groove molding demolding part 8 is moved outward, and then the molded plastic part is ejected through the groove surface molding ejection demolding component 9, and there is no need to perform secondary finishing on the cavity groove and the groove surface of the plastic part, which shortens the process. At the same time, the ejection structure is compact and reasonable, which improves the space utilization rate and reduces the overall volume of the mold.

[0029] Combination Figure 1-5 As shown, the slot surface molding ejection demolding component 9 includes a first inclined ejector rod 10 arranged in the folding storage box molding lower mold 1, and the outer side of the first inclined ejector rod 10 has a slot surface molding protrusion 11, and the slot surface molding protrusion 11 corresponds to the position of the molding lower part 7, and an inner concave surface 12 is formed between the slot surface molding protrusion 11 and the first inclined ejector rod 10.

[0030] Specifically, during the injection molding process, the groove surface molding protrusion 11 and the inner concave surface 12 cooperate to synchronously mold the groove surface of the plastic part. After the injection molding is completed, the plastic part is ejected by the first inclined ejector rod 10. There is no need for secondary finishing of the groove surface of the plastic part, which shortens the process. At the same time, the ejection structure is compact and reasonable, which improves space utilization and reduces the overall volume of the mold.

[0031] Combination Figure 3 , Figure 4As shown, the semi-open side groove forming demolding part 8 includes two side demolding slides 13 arranged in the folding storage box forming lower mold 1, and two limiting connecting blocks 14 are provided on the side demolding slides 13. The limiting connecting block 14 is provided with a side groove forming part 15 at one end away from the side demolding slide 13.

[0032] In this embodiment, the side groove molding parts 15 are used to assist in molding the semi-open cavity grooves on both sides of the plastic part, and the limiting connecting block 14 can prevent the molten material from leaking from the side. After the injection molding is completed, the side demolding slide 13 is moved to the side away from the cavity for side demolding to avoid affecting the next step of ejection.

[0033] The side groove forming member 15 includes a first forming transverse plate 16 and a second forming transverse plate 17 which are arranged at one end of the limiting connecting block 14 away from the side demolding slide 13. The first forming transverse plate 16 and the second forming transverse plate 17 are parallel to each other. A convex forming groove 18 is formed between the first forming transverse plate 16 and the second forming transverse plate 17. The width of the first forming transverse plate 16 is smaller than the width of the second forming transverse plate 17.

[0034] In this embodiment, during the injection molding process, the first molding transverse plate 16 and the second molding transverse plate 17 cooperate to assist in molding the semi-open cavities on both sides of the plastic part, and the convex strip molding groove 18 is used to synchronously mold the convex strip structure on the side of the plastic part.

[0035] Combination Figure 1-3 As shown, a plurality of second inclined ejector rods 19 are further provided in the foldable storage box forming lower mold 1, and a large-area ejector plate 20 is provided on the top of the second inclined ejector rod 19. A plurality of straight ejector rods 21 are further provided in the foldable storage box forming lower mold 1.

[0036] In this embodiment, after the injection molding is completed, the plastic part is ejected by the second inclined ejector rod 19 and the straight ejector rod 21, thereby increasing the ejection area and ejection range of the plastic part.

[0037] Combination Figure 1 As shown, the injection molded part 3 includes an injection molded main board 22 disposed above the folding storage box molding upper mold 2, and the injection molded main board 22 has an injection molded main hole 23 therein.

[0038] In this embodiment, during the injection molding process, the molten material is injected into the mold cavity through the injection main hole 23 in the injection main board 22 to complete the injection molding.

[0039] The working principle of the utility model is:

[0040] During the injection molding process, the folding storage box molding lower mold 1 and the folding storage box molding upper mold 2 are brought close to each other, so that the mold protrusion 4 and the mold cavity 6 are closely attached, and the molding upper part 5 and the molding lower part 7 are attached to form a complete cavity, and the molten material is injected into the cavity through the injection main hole 23 in the injection main board 22. During the injection molding process, the groove surface molding protrusion 11 and the inner concave surface 12 cooperate to synchronously mold the groove surface of the plastic part. After the injection molding is completed, the plastic part is ejected by the first inclined ejector rod 10. There is no need to perform secondary finishing on the groove surface of the plastic part, which shortens the process. At the same time, the ejection structure is compact and reasonable, which improves the space utilization rate and reduces the overall volume of the mold. The first molding cross plate 16 and the second molding cross plate 17 cooperate to assist in molding the semi-open cavity grooves on both sides of the plastic part, and the convex strip molding groove 18 is used to synchronously mold the convex strip structure on the side of the plastic part.

[0041] After the injection molding is completed, the plastic part is ejected by the second inclined ejector rod 19 and the straight ejector rod 21, thereby increasing the ejection area and ejection range of the plastic part.

[0042] 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.

[0043] Although the following terms are used more frequently in this article, such as the folding storage box molding lower mold 1, the folding storage box molding upper mold 2, the injection molded part 3, the mold clamping protrusion 4, the molding upper part 5, the mold clamping cavity 6, the molding lower part 7, the semi-open side groove molding demoulding part 8, the card slot surface molding ejection demoulding component 9, the first inclined ejection demoulding rod 10, the card slot surface molding protrusion 11, the inner concave surface 12, the side demoulding slide 13, the limit connecting block 14, the side groove molding part 15, the first molding cross plate 16, the second molding cross plate 17, the convex strip molding groove 18, the second inclined ejection demoulding rod 19, the large area ejection plate 20, the straight ejector rod 21, the injection molding main board 22, the injection molding main hole 23, etc., 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 precision injection molding mold for a plastic folding storage box, comprising a folding storage box molding lower mold (1) and a folding storage box molding upper mold (2), characterized in that: An injection molded part (3) is provided above the foldable storage box molding upper mold (2), a mold clamping protrusion (4) is provided at the bottom of the foldable storage box molding upper mold (2), and a molding upper part (5) is provided at the bottom of the mold clamping protrusion (4). A mold clamping cavity (6) is provided in the foldable storage box molding lower mold (1), and a molding lower part (7) is provided in the mold clamping cavity (6). The molding upper part (5) corresponds to the molding lower part (7) in position and has a matching shape. A semi-open side groove molding demolding part (8) and a slot surface molding ejection demolding component (9) are also provided in the foldable storage box molding lower mold (1), and the semi-open side groove molding demolding part (8) and the slot surface molding ejection demolding component (9) respectively correspond to the position of the molding lower part (7).

2. The precision injection molding mold for a plastic foldable storage box according to claim 1, characterized in that: The slot surface molding ejection demoulding assembly (9) comprises a first inclined ejection demoulding rod (10) arranged in a folding storage box molding lower mold (1), the first inclined ejection demoulding rod (10) has a slot surface molding protrusion (11) on the outer side, and the slot surface molding protrusion (11) corresponds to the position of the molding lower part (7).

3. The precision injection molding mold for a plastic foldable storage box according to claim 2, characterized in that: An inner concave surface (12) is formed between the groove surface molding protrusion (11) and the first inclined ejection rod (10).

4. The precision injection molding mold for a plastic foldable storage box according to claim 3, characterized in that: The semi-open side groove forming demoulding component (8) comprises two side demoulding slides (13) arranged in the folding storage box forming lower mold (1), and two limiting connecting blocks (14) are arranged on the side demoulding slides (13), and the limiting connecting blocks (14) are provided with a side groove forming component (15) at one end away from the side demoulding slides (13).

5. The precision injection molding mold for a plastic foldable storage box according to claim 4, characterized in that: The side groove forming member (15) comprises a first forming transverse plate (16) and a second forming transverse plate (17) which are arranged at one end of the limiting connection block (14) away from the side demoulding slide seat (13), and the first forming transverse plate (16) and the second forming transverse plate (17) are parallel to each other.

6. The precision injection molding mold for a plastic foldable storage box according to claim 5, characterized in that: A convex molding groove (18) is formed between the first molding transverse plate (16) and the second molding transverse plate (17).

7. The precision injection molding mold for a plastic foldable storage box according to claim 6, characterized in that: The width of the first molded transverse plate (16) is smaller than the width of the second molded transverse plate (17).

8. The precision injection molding mold for a plastic foldable storage box according to claim 7, characterized in that: A plurality of second inclined ejector rods (19) are also provided in the foldable storage box forming lower mold (1), and the tops of the second inclined ejector rods (19) are provided with large-area ejector plates (20).

9. The precision injection molding mold for a plastic foldable storage box according to claim 8, characterized in that: A plurality of straight push rods (21) are also provided in the foldable storage box forming lower die (1).

10. The precision injection molding mold for a plastic foldable storage box according to claim 9, characterized in that: The injection molded part (3) comprises an injection molded main board (22) arranged above the folding storage box forming upper mold (2), and the injection molded main board (22) has an injection molded main hole (23) therein.

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