One-to-two rectangular preservation box injection mold

Abstract

The utility model belongs to the technical field of injection molds, and particularly relates to a rectangular preservation box injection mold capable of producing two products at one time. The injection mold comprises an upper mold plate, an injection molding opening assembly is arranged in the upper mold plate, a supporting block and an upper mold base are arranged below the upper mold plate, a runner block is arranged above the upper mold base, a lower mold base is arranged below the upper mold base, a lower mold plate is arranged below the lower mold base, and a positioning plate is arranged below the lower mold plate. According to the utility model, the whole die is separated in a sectional manner, so that a product piece is completely exposed, the piece is convenient to take, the condition of deformation or flanging is avoided, the production efficiency is improved, the production cost is reduced, and the production cost is reduced. And meanwhile, two preservation boxes can be produced in the mold at a time, so that the production efficiency and the yield are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection molds and relates to an injection mold for a rectangular fresh-keeping box with two holes. Background Art

[0002] An injection mold is a tool for producing plastic products, and is also a tool for giving plastic products a complete structure and precise dimensions. Injection molding is a processing method used in the mass production of certain parts with complex shapes. Specifically, it refers to the high-pressure injection of heated and melted plastic into the mold cavity by an injection molding machine, and after cooling and solidification, a molded product is obtained. When injecting existing rectangular fresh-keeping boxes, since the fresh-keeping boxes are cylindrical, the mold is designed as an integral part. However, since the product is in a hot state when the injection molding is completed, the product will be deformed or flanging when it is taken out. Usually, the injection molding of fresh-keeping boxes is carried out in a single process, one barrel at a time, which wastes working hours, increases production time, and reduces production efficiency. Therefore, in response to the above problems, a one-outlet two-rectangular fresh-keeping box injection mold is proposed. Utility Model Content

[0003] The purpose of the utility model is to solve the above problems and provide a one-outlet two-outlet rectangular fresh-keeping box injection mold.

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

[0005] A one-outlet two-rectangular fresh-keeping box injection mold includes an upper template, support blocks are provided on both sides of the lower side of the upper template, and an injection port assembly is provided in the middle of the upper template, an upper mold base is provided below the support block, and a runner block is provided in the middle part above the upper mold base, a lower mold base is provided below the upper mold base, and a lower template is provided below the lower mold base, a core column block is inserted into the lower mold base, and the top of the core column block is placed in the bottom of the upper mold base, and at the same time, the bottom of the core column block is placed below the lower template, a positioning plate is provided below the lower template, and the bottom of the core column block is stuck in the upper part of the positioning plate.

[0006] In the above-mentioned one-out-two rectangular fresh-keeping box injection mold, the middle part of the upper template is inserted and fixedly connected to the injection port assembly, and the upper template passes through the bottom of the injection port assembly. Both sides of the lower part of the upper template are fixedly connected to support blocks, and the bottoms of the two support blocks are respectively fixedly connected to the two sides above the upper mold base. At the same time, there is a distance between the top of the upper mold base and the bottom of the injection port assembly.

[0007] In the above-mentioned one-out-two rectangular fresh-keeping box injection mold, the runner block is fixedly connected to the middle part of the upper mold base, and a flow guide is opened above the runner block. The bottom of the injection port assembly is inserted into the flow guide. Two runner holes are opened on the upper mold base, and the two runner holes are connected to the bottom of the two ends of the runner block.

[0008] In the above-mentioned one-out-two rectangular fresh-keeping box injection mold, the lower mold base is pressed under the upper mold base, and a first groove portion is provided under the upper mold base, while a first protrusion portion is provided above the lower mold base. The first protrusion portion is inserted into and slidably connected to the first groove portion, and the core bottom block portion is fixedly connected to the first groove portion.

[0009] In the above-mentioned one-out-two rectangular fresh-keeping box injection mold, two core through-hole portions are opened in the middle of the lower mold base, and a plurality of slot portions are opened at the bottom of the lower mold base. At the same time, the plurality of slot portions are orderly distributed around the two core through-hole portions, and the core bottom block portion corresponds to the top of the core through-hole portion.

[0010] In the above-mentioned one-out-two rectangular fresh-keeping box injection mold, a plurality of plug-in blocks are fixedly connected to the upper portion of the lower template, and the plug-in blocks are inserted into the sliding connection slots. At the same time, the upper plane of the lower template is tightly fitted with the bottom of the lower mold base.

[0011] In the above-mentioned one-out-two rectangular fresh-keeping box injection mold, a second groove portion is provided at the bottom of the lower template, and a socket portion is opened in the second groove portion and in the lower template, and a second protrusion portion is provided above the positioning plate.

[0012] In the above-mentioned one-out-two rectangular fresh-keeping box injection mold, a positioning groove is provided in the second protrusion, and the positioning groove corresponds to the insertion hole, and the second protrusion is inserted into the second groove for sliding connection.

[0013] In the above-mentioned one-out-two rectangular fresh-keeping box injection mold, the socket part and the core through-hole part are both inserted above the core column block, and there is a gap between the outer wall of the core column block and the inner wall of the socket part and the inner wall of the core through-hole part. At the same time, there is a distance between the top of the core column block and the bottom of the core bottom block part.

[0014] In the above-mentioned one-out-two rectangular fresh-keeping box injection mold, the bottom of the core column block is fixedly connected to the limit block part, and the upper plane of the limit block part is tightly fitted with the bottom of the second groove part. A positioning groove part is opened in the middle of the second protrusion part, and the positioning groove part is inserted into the fixed connection limit block part.

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

[0016] The utility model is provided with an injection port assembly in the upper template, and a support block and an upper mold base are provided below the upper template, and a runner block is provided above the upper mold base, a lower mold base is provided below the upper mold base, and a lower template is provided below the lower mold base, a positioning plate is provided below the lower template, and a limit block portion below the core column block is fixedly connected above the positioning plate, and the top of the core column block is inserted into the lower template and the lower mold base, and the entire mold is separated from the mold in sections, so that the product parts are completely exposed, which is convenient for taking out and avoids deformation or flanging. At the same time, two fresh-keeping boxes are produced in the mold at a time, which increases production efficiency and output rate.

[0017] 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

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

[0019] Figure 2 This is a schematic exploded top view of the entire utility model;

[0020] Figure 3 This is a schematic diagram of an overall explosion viewed from above of the present invention;

[0021] Figure 4 It is a schematic side sectional view of the entirety of the present invention;

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

[0023] In the figure: 1. Upper template; 2. Injection port assembly; 3. Support block; 4. Upper mold base; 401. Runner hole portion; 402. First groove portion; 403. Core bottom block portion; 5. Lower mold base; 501. First protrusion portion; 502. Core through hole portion; 503. Slot portion; 6. Lower template; 601. Insert block portion; 602. Insert hole portion; 603. Second groove portion; 7. Positioning plate; 701. Second protrusion portion; 702. Positioning groove portion; 8. Runner block; 801. Guide channel; 9. Core column block; 901. Limit block portion. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1-5As shown, a one-outlet two-rectangular fresh-keeping box injection mold includes an upper template 1, support blocks 3 are provided on both sides of the lower side of the upper template 1, and an injection port assembly 2 is provided in the middle of the upper template 1, an upper mold base 4 is provided below the support block 3, and a runner block 8 is provided in the middle part above the upper mold base 4, a lower mold base 5 is provided below the upper mold base 4, and a lower template 6 is provided below the lower mold base 5, a core column block 9 is inserted into the lower mold base 5, and the top of the core column block 9 is placed in the bottom of the upper mold base 4, and at the same time, the bottom of the core column block 9 is placed below the lower template 6, a positioning plate 7 is provided below the lower template 6, and the bottom of the core column block 9 is stuck in the top of the positioning plate 7.

[0026] The injection port assembly 2 is inserted and fixedly connected through the middle of the upper template 1, and the upper template 1 is passed through the bottom of the injection port assembly 2. Both sides of the bottom of the upper template 1 are fixedly connected to the support blocks 3, and the bottoms of the two support blocks 3 are fixedly connected to the two sides of the upper mold base 4 respectively. At the same time, there is a distance between the top of the upper mold base 4 and the bottom of the injection port assembly 2.

[0027] Furthermore, the upper middle part of the upper mold base 4 is fixedly connected to the runner block 8, and a guide channel 801 is opened above the runner block 8, and the guide channel 801 is inserted into the bottom of the injection port assembly 2. Two runner holes 401 are opened on the upper mold base 4, and the two runner holes 401 are connected to the bottom of the two ends of the runner block 8.

[0028] An injection port assembly 2 is provided in the upper mold plate 1, and a runner block 8 is provided between the upper mold plate 1 and the upper mold base 4. The injection port assembly 2 is inserted into the runner block 8 from below, and the flow is divided into two streams through the guide channel 801 provided in the runner block 8 and injected into the bottom of the runner hole 401 of the upper mold base 4. Two cavities can be injected simultaneously inside the entire mold.

[0029] Furthermore, the lower mold base 5 is pressed under the upper mold base 4, and a first groove portion 402 is provided under the upper mold base 4, while a first protrusion portion 501 is provided above the lower mold base 5. The first protrusion portion 501 is inserted into the first groove portion 402 for sliding connection, and the core bottom block portion 403 is fixedly connected in the first groove portion 402.

[0030] Furthermore, two core through-hole portions 502 are opened in the middle of the lower mold base 5, and multiple slot portions 503 are opened at the bottom of the lower mold base 5. At the same time, the multiple slot portions 503 are orderly distributed around the two core through-hole portions 502, and the core bottom block portion 403 corresponds to the core through-hole portion 502.

[0031] The first groove portion 402 provided at the bottom of the upper mold base 4 and the first protrusion portion 501 provided at the top of the lower mold base 5 cooperate with each other, so that the accuracy of the upper mold base 4 and the lower mold base 5 is guaranteed when the mold is closed.

[0032] Furthermore, a plurality of inserting blocks 601 are fixedly connected to the upper portion of the lower template 6 , and the inserting blocks 601 are inserted into the sliding connection slot portions 503 , while the upper plane of the lower template 6 is tightly fitted to the bottom of the lower mold base 5 .

[0033] The insert block portion 601 provided on the lower mold plate 6 is inserted into the slot portion 503 below the lower mold base 5, so that the lower mold plate 6 and the lower mold base 5 are accurately aligned when the mold is closed.

[0034] Furthermore, a second groove portion 603 is provided at the bottom of the lower template 6 , and an insertion hole portion 602 is opened in the second groove portion 603 and the lower template 6 , and a second protrusion portion 701 is provided above the positioning plate 7 .

[0035] Furthermore, a positioning groove portion 702 is defined in the second protrusion portion 701 , and the positioning groove portion 702 corresponds to the insertion hole portion 602 , and the second protrusion portion 701 is inserted into the second groove portion 603 for sliding connection.

[0036] The second groove portion 603 provided at the bottom of the lower template 6 cooperates with the second protrusion 701 provided above the positioning plate 7, so that the lower template 6 can be accurately placed above the positioning plate 7 when the mold is closed.

[0037] The core column block 9 is inserted through the socket part 602 and the core through hole part 502, and there is a gap between the outer wall of the core column block 9 and the inner wall of the socket part 602 and the inner wall of the core through hole part 502. At the same time, there is a distance between the top of the core column block 9 and the bottom of the core bottom block part 403.

[0038] Furthermore, the bottom of the core column block 9 is fixedly connected to the limit block part 901, and the upper plane of the limit block part 901 is tightly fitted with the bottom of the second groove part 603. A positioning groove part 702 is opened in the middle of the second protrusion part 701, and the limit block part 901 is inserted and fixedly connected into the positioning groove part 702.

[0039] After the bottom of the core column block 9 is fixed above the positioning plate 7, the top of the core column block 9 is inserted into the lower mold plate 6 and the lower mold base 5. At the same time, the top of the core column block 9 corresponds to the core bottom block part 403, so that a cavity is formed around the core column block 9.

[0040] Working principle:

[0041] An injection port assembly 2 is provided in the upper mold plate 1, and a support block 3 and an upper mold base 4 are provided below the upper mold plate 1. At the same time, a runner block 8 is provided above the upper mold base 4. After the bottom of the injection port assembly 2 is inserted into the upper part of the runner block 8, the injection liquid in the injection port assembly 2 will be injected into the runner block 8, and then divided into two streams by the runner block 8 and injected into the upper mold base 4 and below it. A lower mold base 5 is provided below the upper mold base 4, and a lower mold plate 6 is provided below the lower mold base 5, so that the lower mold base 5 and the lower mold plate 6 can be separated from the upper mold base 4 at the same time when the mold is opened. A positioning plate 7 is provided below the lower mold plate 6, and a fixed connection mold is provided above the positioning plate 7. The limit block part 901 below the core column block 9, so that the positioning plate 7 and the core column block 9 will be disengaged from the lower template 6 and the lower mold base 5 when the mold is opened, and the upper part of the core column block 9 is inserted into the lower template 6 and the lower mold base 5, then a complete cavity is formed between the outer wall of the core column block 9 and the inner wall of the socket part 602 in the lower template 6, the inner wall of the core through hole part 502 in the lower mold base 5, and the bottom of the core bottom block part 403 at the bottom of the upper mold base 4. When the mold is opened, the upper mold base 4 and the structure above it are disengaged, and then the lower mold base 5 and the lower template 6 are disengaged from the positioning plate 7. At this time, the product is sleeved outside the core column block 9 and can be removed at last.

[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 with similar methods, without departing from the spirit of the present invention.

[0043] Although this article frequently uses terms such as 1. upper mold plate; 2. injection port assembly; 3. support block; 4. upper mold base; 401. runner hole portion; 402. first groove portion; 403. core bottom block portion; 5. lower mold base; 501. first protrusion portion; 502. core through-hole portion; 503. slot portion; 6. lower mold plate; 601. insert portion; 602. insert portion; 603. second groove portion; 7. positioning plate; 701. second protrusion portion; 702. positioning groove portion; 8. runner block; 801. flow guide; 9. core column block; 901. limit block portion, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention. Interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A rectangular fresh-keeping box injection mold with two holes, comprising an upper mold plate (1), characterized in that: Support blocks (3) are provided on both sides below the upper mold plate (1), and an injection port assembly (2) is provided in the middle of the upper mold plate (1); an upper mold base (4) is provided below the support block (3), and a runner block (8) is provided in the middle of the upper mold base (4); a lower mold base (5) is provided below the upper mold base (4), and a lower mold plate (6) is provided below the lower mold base (5); a core column block (9) is inserted into the lower mold base (5), and the top of the core column block (9) is placed in the bottom of the upper mold base (4), and the bottom of the core column block (9) is placed below the lower mold plate (6); a positioning plate (7) is provided below the lower mold plate (6), and the bottom of the core column block (9) is stuck in the top of the positioning plate (7).

2. The one-outlet-two-outlet rectangular fresh-keeping box injection mold according to claim 1, characterized in that: The middle of the upper template (1) is inserted and fixedly connected to the injection port assembly (2), and the lower portion of the injection port assembly (2) passes through the upper template (1). Both sides of the lower portion of the upper template (1) are fixedly connected to support blocks (3), and the bottoms of the two support blocks (3) are respectively fixedly connected to both sides of the upper portion of the upper mold base (4). At the same time, there is a distance between the top of the upper mold base (4) and the bottom of the injection port assembly (2).

3. The one-outlet-two-outlet rectangular fresh-keeping box injection mold according to claim 2, characterized in that: The middle part of the upper mold base (4) is fixedly connected to the runner block (8), and a flow guide (801) is provided above the runner block (8), and the bottom of the injection port assembly (2) is inserted into the flow guide (801). Two runner holes (401) are provided on the upper mold base (4), and the two runner holes (401) are connected to the bottom of the two ends of the runner block (8).

4. The one-outlet-two-outlet rectangular fresh-keeping box injection mold according to claim 3, characterized in that: The lower die base (5) is pressed under the upper die base (4), and a first groove portion (402) is provided under the upper die base (4). Meanwhile, a first protrusion portion (501) is provided above the lower die base (5), and the first protrusion portion (501) is inserted into and slidably connected to the first groove portion (402), and the first groove portion (402) is fixedly connected to the mold core bottom block portion (403).

5. The one-outlet-two-outlet rectangular fresh-keeping box injection mold according to claim 4, characterized in that: The middle of the lower mold base (5) is provided with two core through-hole portions (502), and the bottom of the lower mold base (5) is provided with a plurality of slot portions (503). The plurality of slot portions (503) are orderly distributed around the two core through-hole portions (502), and the core bottom block portion (403) corresponds to the top of the core through-hole portion (502).

6. The one-outlet-two-outlet rectangular fresh-keeping box injection mold according to claim 5, characterized in that: A plurality of insert blocks (601) are fixedly connected to the upper portion of the lower template (6), and the insert blocks (601) are inserted into the sliding connection slots (503), while the upper plane of the lower template (6) is tightly fitted with the bottom of the lower mold base (5).

7. The one-outlet-two-outlet rectangular fresh-keeping box injection mold according to claim 6, characterized in that: A second groove portion (603) is provided at the bottom of the lower template (6), and a socket portion (602) is provided in the second groove portion (603) and in the lower template (6). A second protrusion portion (701) is provided above the positioning plate (7).

8. The one-outlet-two-outlet rectangular fresh-keeping box injection mold according to claim 7, characterized in that: A positioning groove (702) is provided in the second protruding portion (701), and the positioning groove (702) corresponds to the socket portion (602), and the second protruding portion (701) is inserted into the second groove portion (603) for sliding connection.

9. The one-outlet-two-outlet rectangular fresh-keeping box injection mold according to claim 8, characterized in that: The inserting hole portion (602) and the core through hole portion (502) are both inserted above the core column block (9), and there is a gap between the outer wall of the core column block (9) and the inner wall of the inserting hole portion (602) and the inner wall of the core through hole portion (502), and there is a distance between the top of the core column block (9) and the bottom of the core bottom block portion (403).

10. The one-outlet-two-outlet rectangular fresh-keeping box injection mold according to claim 9, characterized in that: The bottom of the core column block (9) is fixedly connected to the limit block portion (901), and the upper plane of the limit block portion (901) is tightly fitted with the bottom of the second groove portion (603); a positioning groove portion (702) is opened in the middle of the second protrusion portion (701), and the limit block portion (901) is inserted and fixedly connected into the positioning groove portion (702).

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