Injection mold for deep-ring-groove PET (polyethylene terephthalate) plastic bottle blank

Abstract

The utility model belongs to the technical field of injection molds, and particularly relates to an injection mold for a deep-ring-groove PET (Polyethylene Terephthalate) plastic bottle blank. The injection mold comprises an upper mold plate, an injection molding opening assembly is arranged above the upper mold plate, a heat preservation flow guide plate is arranged below the upper mold plate, an upper mold base is arranged below the heat preservation flow guide plate, a forming sleeve assembly is arranged in the upper mold base, the bottom of the forming sleeve assembly is inserted into a base assembly for plugging, and a positioning plate assembly and a lower mold base are arranged outside the base assembly. Positioning sleeves are arranged on the two sides of the upper portion of the lower die base, positioning columns are arranged on the two sides of the upper portion of the lower die plate and inserted into the positioning sleeves and the upper die base, an ejector rod is arranged on the upper portion of the lower die plate, the upper section of the ejector rod is inserted into a forming column assembly to be fixed, and meanwhile the forming column assembly penetrates out of the base assembly. In the demolding process, the forming sleeve assembly is directly and vertically disengaged from the upper portion of a product piece, deformation and damage are avoided, the rejection rate is reduced, and secondary remodeling is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds and relates to an injection mold for a deep ring groove PET plastic bottle blank. Background Art

[0002] Injection molding, also known as injection molding, is a molding method that combines injection and molding. The advantages of the injection molding method are fast production speed, high efficiency, automated operation, a wide variety of colors, shapes from simple to complex, sizes from large to small, and precise product size. The product is easy to update and can be made into parts with complex shapes. Injection molding is suitable for mass production and molding and processing fields such as products with complex shapes. The existing PET bottle embryo is long and cylindrical, and tends to become smaller from the bottle body to the bottle mouth. During manufacturing, it is basically blow molded. However, the product obtained by blow molding is easy to deform and break when it is directly molded, and the scrap rate is high, so it needs to be recycled for secondary reshaping. Therefore, in view of the above problems, a deep ring groove PET plastic bottle embryo injection mold is proposed. Utility Model Content

[0003] The utility model aims to solve the above problems and provides a deep ring groove PET plastic bottle blank injection mold.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A deep ring groove PET plastic bottle blank injection mold comprises an upper template, an injection port assembly is provided in the middle of the upper template, and a heat preservation guide plate is provided below the upper template, and a connecting block is provided above the heat preservation guide plate, an upper mold base is provided below the heat preservation guide plate, positioning sleeves are provided on both sides of the lower part of the upper mold base, and the bottom of the positioning sleeves is placed on both sides above the lower mold base, and a lower template is provided below the lower mold base, a positioning plate assembly is provided in the middle of the upper part of the lower mold base, and a base assembly is provided in the lower mold base and the positioning plate assembly, a push rod and a molding column assembly are inserted in the base assembly, and the bottom of the molding column assembly is placed in the lower template, and the molding column assembly is sleeved outside the push rod, a molding sleeve assembly is provided above the base assembly, and the top of the molding sleeve assembly is placed in the upper mold base, and the upper section of the molding column assembly is inserted in the molding sleeve assembly, positioning columns are provided at the four corners of the lower mold base, and the tops of the positioning columns are respectively inserted into the lower mold base and the upper mold base.

[0006] In the above-mentioned deep ring groove PET plastic bottle blank injection mold, the injection port assembly is fixedly connected to the middle of the upper mold plate, and the lower part of the upper mold plate is fixedly connected. At the same time, a plurality of diverter injection pieces are fixedly connected to the insulation guide plate. A groove is opened on the upper part of the insulation guide plate, and a connecting block is placed in the groove. The connecting block, the diverter injection piece and the injection port assembly are connected.

[0007] In the above-mentioned deep ring groove PET plastic bottle blank injection mold, a plurality of through-hole portions are opened at the bottom of the thermal insulation guide plate, and a plurality of lower ends of the diversion injection pieces are inserted into the plurality of through-hole portions. An upper mold base is fixedly connected below the thermal insulation guide plate, and a plurality of cylindrical holes are opened in the upper mold base, and the plurality of cylindrical holes correspond to the plurality of through-hole portions.

[0008] In the above-mentioned deep ring groove PET plastic bottle blank injection mold, the cylindrical hole is fixedly connected to the top of the molding sleeve assembly, and the top plane of the molding sleeve assembly is flush with the top plane of the upper mold base, and the lower end of the diverter injection piece is inserted into the top of the molding sleeve assembly, and the bottom of the diverter injection piece is flush with the internal top wall of the molding sleeve assembly.

[0009] In the above-mentioned deep ring groove PET plastic bottle blank injection mold, the two sides of the lower mold base are fixedly connected to the positioning sleeves, and the top of the positioning sleeves is pressed against the two sides below the upper mold base, the bottom of the lower mold base is fixedly connected to the lower mold plate, and the four corners of the lower mold plate are fixedly connected to the positioning columns, and the positioning columns are respectively inserted into the sliding connection positioning sleeve and the two sides of the upper mold base.

[0010] In the above-mentioned deep ring groove PET plastic bottle blank injection mold, the positioning plate assembly is fixedly connected to the middle part of the upper part of the lower mold base, and a plurality of positioning holes are provided in the lower mold base and the positioning plate assembly, the base assembly is fixedly connected in the positioning hole portion, and the bottom of the base assembly is tightly fitted with the upper plane of the lower mold plate.

[0011] In the above-mentioned deep ring groove PET plastic bottle blank injection mold, a plurality of slot parts are opened in the lower mold plate, and the slot parts are inserted into the bottom of the fixedly connected molding column assembly, and the top of the molding column assembly passes through the sliding connection base assembly.

[0012] In the above-mentioned deep ring groove PET plastic bottle blank injection mold, a push rod is inserted and fixedly connected in the molding column assembly, and the lower part of the push rod penetrates into the slot part, and the bottom of the push rod is fixedly connected to the bottom of the slot part.

[0013] In the above-mentioned deep ring groove PET plastic bottle blank injection mold, the upper part of the base component is inserted into the lower part of the sliding connection molding sleeve component.

[0014] In the above-mentioned deep annular groove PET plastic bottle blank injection mold, the molding column assembly is inserted into the molding sleeve assembly, and a molding cavity is formed between the outer wall of the molding column assembly and the inner wall of the molding sleeve assembly.

[0015] Compared with the existing technology, the advantages of the utility model are:

[0016] The utility model is provided with an injection port assembly above the upper template, and a heat preservation guide plate is provided below the upper template, an upper mold base is provided below the heat preservation guide plate, a molding sleeve assembly is provided in the upper mold base, the bottom of the molding sleeve assembly is inserted into the base assembly for sealing, a positioning plate assembly and a lower mold base are provided outside the base assembly, positioning sleeves are provided on both sides above the lower mold base, and positioning columns are provided on both sides above the lower template and inserted into the positioning sleeve and the upper mold base, a push rod is provided above the lower template, and the upper section of the push rod is inserted into the molding column assembly for fixing, and the molding column assembly passes through the base assembly, and the molding sleeve assembly cooperates with the molding column assembly, and when demolding, the molding sleeve assembly is directly detached vertically from the top of the product, thereby avoiding deformation and damage, reducing the scrap rate, and preventing secondary reshaping.

[0017] 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

[0018] Figure 1 It is an overall schematic diagram of the utility model;

[0019] Figure 2 It is an overall exploded top view schematic diagram of the utility model;

[0020] Figure 3 It is an overall exploded bottom view schematic diagram of the utility model;

[0021] Figure 4 It is a schematic diagram of the interior of the upper die seat of the utility model;

[0022] Figure 5 It is a schematic diagram of the internal structure coordination above the lower die seat of the utility model.

[0023] In the figure: 1. upper template; 2. injection port assembly; 21. diverter injection piece; 22. connecting block; 3. thermal insulation guide plate; 31. groove; 32. through hole; 4. upper mold base; 41. cylindrical hole; 5. lower mold base; 51. positioning hole; 6. lower template; 61. slot; 7. positioning plate assembly; 8. positioning sleeve; 9. positioning column; 10. molding sleeve assembly; 11. molding column assembly; 12. ejector pin; 13. base assembly. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] like Figure 1-5As shown, a deep ring groove PET plastic bottle blank injection mold comprises an upper mold plate 1, an injection port assembly 2 is arranged in the middle of the upper mold plate 1, and a heat preservation guide plate 3 is arranged below the upper mold plate 1, and a connecting block 22 is arranged inside the upper part of the heat preservation guide plate 3, an upper mold base 4 is arranged below the heat preservation guide plate 3, positioning sleeves 8 are arranged on both sides of the lower part of the upper mold base 4, and the bottom of the positioning sleeves 8 are placed on both sides above the lower mold base 5, and a lower mold plate 6 is arranged below the lower mold base 5, and a positioning plate assembly 7 is arranged in the middle of the upper part of the lower mold base 5, and the lower mold base 5 and the positioning sleeve 8 are arranged on the lower mold base 5. A base assembly 13 is provided in each plate assembly 7, and a push rod 12 and a forming column assembly 11 are inserted in the base assembly 13, and the bottom of the forming column assembly 11 is placed in the lower mold plate 6, and the forming column assembly 11 is sleeved outside the push rod 12, and a forming sleeve assembly 10 is provided above the base assembly 13, and the top of the forming sleeve assembly 10 is placed in the upper mold base 4, and the upper section of the forming column assembly 11 is inserted in the molding sleeve assembly 10, and positioning columns 9 are provided at the four corners of the lower mold plate 6, and the tops of the positioning columns 9 are respectively inserted into the lower mold base 5 and the upper mold base 4.

[0026] The injection port assembly 2 is fixedly connected through the middle of the upper part of the upper template 1, and the lower part of the upper template 1 is fixedly connected. At the same time, a plurality of diverter injection pieces 21 are fixedly connected to the thermal insulation guide plate 3. A groove 31 is opened in the upper part of the thermal insulation guide plate 3, and a connecting block 22 is placed in the groove 31. The connecting block 22 and the diverter injection piece 21 are connected to the injection port assembly 2.

[0027] Furthermore, a plurality of through-hole portions 32 are provided at the bottom of the thermal insulation guide plate 3, and a plurality of lower ends of diversion injection pieces 21 are inserted into the plurality of through-hole portions 32. An upper mold base 4 is fixedly connected below the thermal insulation guide plate 3, and a plurality of cylindrical holes 41 are provided in the upper mold base 4, and the plurality of cylindrical holes 41 correspond to the plurality of through-hole portions 32.

[0028] An injection port assembly 2 is provided above the upper template 1. The injection liquid in the injection port assembly 2 passes through the heat-insulating guide plate 3 below the upper template 1, so that the internal injection liquid will not solidify, and thus flows from the injection port assembly 2 to the diversion injection piece 21 to maintain unobstructed flow.

[0029] Furthermore, the cylindrical hole 41 is fixedly connected to the top of the molding sleeve assembly 10, and the top plane of the molding sleeve assembly 10 is flush with the top plane of the upper mold base 4, the lower end of the diverter injection piece 21 is inserted into the top of the molding sleeve assembly 10, and the bottom of the diverter injection piece 21 is flush with the inner top wall of the molding sleeve assembly 10.

[0030] A molding set assembly 10 is disposed in the upper mold base 4 , and the injection liquid is injected into the molding set assembly 10 through the diversion injection piece 21 . Since the molding set assembly 10 is provided with molding parts, product parts are formed in the molding set assembly 10 .

[0031] The positioning sleeves 8 are fixedly connected on both sides of the lower die base 5, and the top of the positioning sleeves 8 is pressed on the two sides below the upper die base 4. The bottom of the lower die base 5 is fixedly connected to the lower template 6, and the four corners of the lower template 6 are fixedly connected to the positioning columns 9. The positioning columns 9 are respectively inserted into the sliding connection positioning sleeves 8 and the two sides of the upper die base 4.

[0032] Furthermore, the positioning plate assembly 7 is fixedly connected to the middle upper portion of the lower mold base 5, and a plurality of positioning holes 51 are provided in the lower mold base 5 and the positioning plate assembly 7, the base assembly 13 is fixedly connected in the positioning hole portion 51, and the bottom of the base assembly 13 is tightly fitted with the upper plane of the lower mold plate 6.

[0033] A positioning column 9 is provided on the lower mold plate 6, and the positioning column 9 is inserted upward into the lower mold base 5 and the upper mold base 4 to ensure accuracy when the mold is closed.

[0034] Furthermore, a plurality of slot portions 61 are provided in the lower template 6 , and the slot portions 61 are inserted into and fixedly connected to the bottom of the molding column assembly 11 , and the top of the molding column assembly 11 passes through and is slidably connected to the base assembly 13 .

[0035] Furthermore, the push rod 12 is inserted and fixedly connected in the forming column assembly 11 , and the lower part of the push rod 12 penetrates into the slot portion 61 , and the bottom of the push rod 12 is fixedly connected to the bottom of the slot portion 61 .

[0036] The ejector rod 12 is connected to the molding column assembly 11 on the lower template 6 to form a whole, and the molding column assembly 11 is inserted into the base assembly 13 and then passes through, so that the end of the molding column assembly 11 is sealed with the positioning plate assembly 7, and the sealing portion forms the product mouth cavity.

[0037] Furthermore, the upper part of the base assembly 13 is inserted into the lower part of the sliding connection forming sleeve assembly 10 .

[0038] Furthermore, the molding column assembly 11 is inserted into the molding sleeve assembly 10 , and a molding cavity is formed between the outer wall of the molding column assembly 11 and the inner wall of the molding sleeve assembly 10 .

[0039] After the protruding end of the molding column assembly 11 is inserted into the molding sleeve assembly 10, the diversion injection piece 21 is inserted into the molding sleeve assembly 10 to inject the injection liquid, and the product part is obtained inside.

[0040] Working principle:

[0041] An injection port assembly 2 is provided above the upper template 1, and an insulation guide plate 3 is provided below the upper template 1. The injection port assembly 2 is used to perform injection molding inside the mold. A connecting block 22 is provided inside the insulation guide plate 3, and a diversion injection piece 21 is provided inside the connecting block 22. The insulation guide plate 3 is heated inside by external equipment to ensure that the internal injection liquid flows smoothly so that the injection liquid will not solidify after entering the mold. An upper mold base 4 is provided below the insulation guide plate 3. A cylindrical hole 41 is provided in the upper mold base 4. A molding sleeve assembly 10 is provided in the cylindrical hole 41. The bottom of the molding sleeve assembly 10 is inserted into the base assembly 13 for sealing to prevent the injection liquid from overflowing. A positioning plate assembly is provided outside the base assembly 13. 7 and the lower die base 5, positioning sleeves 8 are provided on both sides above the lower die base 5, and a lower mold plate 6 is provided below the lower die base 5, and positioning columns 9 are provided on both sides above the lower mold plate 6 and inserted into the positioning sleeve 8 and the upper die base 4, so that the internal molding cavity can be completely positioned, a push rod 12 is provided above the lower mold plate 6, and the upper section of the push rod 12 is inserted into the molding column assembly 11 for fixation, and the molding column assembly 11 passes through the base assembly 13, and its passing end is inserted into the molding sleeve assembly 10 to form a product cavity. When opening the mold, the structure above the upper die base 4 is disengaged, so that the molding sleeve assembly 10 is pulled out from the base assembly 13, so that the product is still sleeved outside the molding column assembly 11, and then the product can be directly taken.

[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 this article uses more terms such as 1, upper template; 2, injection port assembly; 21, diverter injection piece; 22, connecting block; 3, heat-insulating guide plate; 31, groove; 32, through hole; 4, upper mold base; 41, cylindrical hole; 5, lower mold base; 51, positioning hole; 6, lower template; 61, slot; 7, positioning plate assembly; 8, positioning sleeve; 9, positioning column; 10, molding sleeve assembly; 11, molding column assembly; 12, ejector rod; 13, base assembly, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model. It is contrary to the spirit of the utility model to interpret them as any additional restrictions.

Claims

1. A deep ring groove PET plastic bottle blank injection mold, comprising an upper mold plate (1), characterized in that: An injection port assembly (2) is provided in the middle of the upper part of the upper mold plate (1), and a heat preservation guide plate (3) is provided below the upper mold plate (1), and a connecting block (22) is provided inside the upper part of the heat preservation guide plate (3), and an upper mold base (4) is provided below the heat preservation guide plate (3), and positioning sleeves (8) are provided on both sides below the upper mold base (4), and the bottom of the positioning sleeves (8) is placed on both sides above the lower mold base (5), and a lower mold plate (6) is provided below the lower mold base (5), and a positioning plate assembly (7) is provided in the middle of the upper part of the lower mold base (5), and a base assembly (1) is provided inside the lower mold base (5) and the positioning plate assembly (7). 3), a push rod (12) and a forming column assembly (11) are inserted into the base assembly (13), and the bottom of the forming column assembly (11) is placed in the lower mold plate (6), and the forming column assembly (11) is sleeved outside the push rod (12); a forming sleeve assembly (10) is provided above the base assembly (13), and the upper part of the forming sleeve assembly (10) is placed in the upper mold base (4), and the upper part of the forming column assembly (11) is inserted into the forming sleeve assembly (10); positioning columns (9) are provided at the four corners of the lower mold plate (6), and the upper parts of the positioning columns (9) are respectively inserted into the lower mold base (5) and the upper mold base (4).

2. The deep ring groove PET plastic bottle blank injection mold according to claim 1, characterized in that: The upper middle of the upper template (1) is fixedly connected to the injection port assembly (2), and the lower part of the upper template (1) is fixedly connected to the heat preservation guide plate (3), and at the same time, a plurality of flow diversion injection pieces (21) are fixedly connected to the heat preservation guide plate (3), a groove (31) is provided in the upper part of the heat preservation guide plate (3), and a connecting block (22) is placed in the groove (31), and the connecting block (22), the flow diversion injection piece (21) and the injection port assembly (2) are connected.

3. The deep ring groove PET plastic bottle blank injection mold according to claim 2, characterized in that: The bottom of the heat-insulating guide plate (3) is provided with a plurality of through-hole portions (32), and the lower ends of the plurality of flow-dividing injection pieces (21) are inserted into the plurality of through-hole portions (32). The lower side of the heat-insulating guide plate (3) is fixedly connected to an upper die seat (4), and the upper die seat (4) is provided with a plurality of cylindrical holes (41), and the plurality of cylindrical holes (41) correspond to the plurality of through-hole portions (32).

4. The deep ring groove PET plastic bottle blank injection mold according to claim 3, characterized in that: The cylindrical hole (41) is fixedly connected to the top of the forming sleeve assembly (10), and the top plane of the forming sleeve assembly (10) is flush with the top plane of the upper mold base (4); the lower end of the diverter injection piece (21) is inserted into the top of the forming sleeve assembly (10), and the bottom of the diverter injection piece (21) is flush with the internal top wall of the forming sleeve assembly (10).

5. The deep ring groove PET plastic bottle blank injection mold according to claim 4, characterized in that: Both sides of the lower die base (5) are fixedly connected to positioning sleeves (8), and the top of the positioning sleeves (8) is pressed against the two sides below the upper die base (4). The bottom of the lower die base (5) is fixedly connected to the lower mold plate (6), and the four corners of the lower mold plate (6) are fixedly connected to positioning columns (9), and the positioning columns (9) are respectively inserted into the two sides of the sliding connection positioning sleeve (8) and the upper die base (4).

6. The deep ring groove PET plastic bottle blank injection mold according to claim 5, characterized in that: The middle part of the upper part of the lower mold base (5) is fixedly connected to the positioning plate assembly (7), and a plurality of positioning holes (51) are provided in the lower mold base (5) and the positioning plate assembly (7). The positioning holes (51) are fixedly connected to the base assembly (13), and the bottom of the base assembly (13) is tightly fitted with the upper plane of the lower mold plate (6).

7. The deep ring groove PET plastic bottle blank injection mold according to claim 6, characterized in that: A plurality of slots (61) are provided in the lower template (6), and the slots (61) are inserted into and fixedly connected to the bottom of the molding column assembly (11), and the top of the molding column assembly (11) passes through and is slidably connected to the base assembly (13).

8. The deep ring groove PET plastic bottle blank injection mold according to claim 7, characterized in that: The molding column assembly (11) is inserted into a fixedly connected push rod (12), and the lower part of the push rod (12) penetrates into the slot portion (61), while the bottom of the push rod (12) is fixedly connected to the bottom of the slot portion (61).

9. The deep ring groove PET plastic bottle blank injection mold according to claim 8, characterized in that: The upper part of the base component (13) is inserted into the lower part of the sliding connection forming sleeve component (10).

10. The deep ring groove PET plastic bottle blank injection mold according to claim 9, characterized in that: The molding sleeve assembly (10) is inserted into the molding column assembly (11), and a molding cavity is formed between the outer wall of the molding column assembly (11) and the inner wall of the molding sleeve assembly (10).

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