Rubber injection mold with three-layer mold cavity structure

Abstract

The utility model relates to a rubber injection mold with a three-layer mold cavity structure, which comprises an upper mold cavity plate and a lower mold cavity plate, and further comprises a middle mold cavity plate positioned between the upper mold cavity plate and the lower mold cavity plate, a plurality of upper mold cores are arranged between the upper mold cavity plate and the middle mold cavity plate, and a plurality of lower mold cores are arranged between the lower mold cavity plate and the middle mold cavity plate. A plurality of upper mold cores are arranged between the middle mold cavity plate and the lower mold cavity plate, a plurality of lower mold cores are arranged between the middle mold cavity plate and the lower mold cavity plate, the end parts of the upper mold cores are fixedly connected with an upper bracket, the end parts of the lower mold cores are fixedly connected with a lower bracket, and two sides of the lower mold cavity plate are respectively provided with a group of driving structures; and the driving structure is matched with the injection machine and is used for sequentially abutting against the upper bracket, the middle mold cavity plate and the lower bracket so as to drive the upper bracket, the middle mold cavity plate and the lower bracket to longitudinally move. According to the rubber injection mold with the three-layer mold cavity structure, on the premise that the projected area of the mold is not changed, the number of the mold cavities is increased, the production efficiency is improved, and meanwhile, the cost for additionally purchasing equipment is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a rubber injection mold with a three-layer mold cavity structure. Background Art

[0002] In the production of rubber products, injection molds are generally used in conjunction with injection machines to form rubber products. In order to reduce production costs and improve production efficiency, this is generally achieved by increasing the number of mold cavities. However, in the existing technology, an increase in the number of mold cavities will lead to an increase in the projected area of ​​the mold. In order to adapt to the mold, manufacturers need to purchase large-tonnage, large-worktable injection machines to cooperate, which invisibly increases the production cost of the product.

[0003] In view of the above problems, the present invention makes improvements. Utility Model Content

[0004] The utility model provides a rubber injection mold with a three-layer mold cavity structure, which solves the above-mentioned problems existing in the prior art during use.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] A rubber injection mold with a three-layer mold cavity structure includes an upper mold cavity plate and a lower mold cavity plate, and also includes a middle mold cavity plate located between the upper mold cavity plate and the lower mold cavity plate. A number of upper cores are arranged between the upper mold cavity plate and the middle mold cavity plate, and a number of lower cores are arranged between the middle mold cavity plate and the lower mold cavity plate. The ends of several of the upper cores are fixedly connected to upper brackets, and the ends of several of the lower cores are fixedly connected to lower brackets. A group of driving structures are respectively provided on both sides of the lower mold cavity plate. The driving structures cooperate with the injection machine to successively abut against the upper bracket, the middle mold cavity plate and the lower bracket to drive the upper bracket, the middle mold cavity plate and the lower bracket to move longitudinally.

[0007] Preferably, the driving structure includes a top plate, a top block and a middle mold hook, the top plate is arranged on one side of the lower model cavity plate and is located below a number of middle mold top columns fixedly connected to the side end of the middle model cavity plate, the top block is fixedly connected to the top plate and is located below the upper bracket, and a first abutment protrusion is formed on the upper end of the top block, and a first abutment hole is formed on the upper bracket that is aligned with and matches the first abutment protrusion, the middle mold hook is fixedly connected to the middle mold and an abutment portion is formed on the middle mold hook and is located below the lower bracket, a second abutment protrusion is formed on the abutment portion, and a second abutment hole is formed on the lower bracket that is aligned with and matches the second abutment protrusion.

[0008] Preferably, a beam bracket is fixedly connected to the top plate, the top block is fixedly connected to the end of the beam bracket, a first adjustment slot is provided on the beam bracket, and two second adjustment slots extending along the length direction of the upper mold cavity plate are provided on the top plate, and two bolts pass through the first adjustment slot and are respectively screwed into the two second adjustment slots to achieve a fixed connection between the beam bracket and the top plate.

[0009] Preferably, a plurality of abutment grooves corresponding to and matching the top columns of the middle mold are provided on the upper edge of the top plate.

[0010] Preferably, the first abutting protrusion is in the shape of a quadrangular pyramid and the small end of the first abutting protrusion faces the first abutting hole.

[0011] Preferably, the second abutting protrusion is in a truncated cone shape and the small end of the second abutting protrusion faces the second abutting hole.

[0012] To sum up, the beneficial effect of the present invention is that: without changing the projection area of ​​the mold, the number of mold cavities is increased by longitudinal setting, so that the three-layer mold can be directly cooperated with the manufacturer's original injection molding machine for production, thereby improving production efficiency while saving the cost of purchasing large-tonnage, large-worktable injection molding machines, and through the action of the driving structure, the mold opening operation of the three-layer mold can be conveniently and accurately realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 This is a schematic diagram of the structure of the utility model when the mold is closed;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model during mold separation;

[0016] Figure 3 This is a structural diagram of another perspective of the utility model when the mold is split;

[0017] Figure 4 This is a schematic diagram of the structure when the new middle top block abuts against the upper bracket;

[0018] Figure 5 This is a structural diagram of the utility model when the middle mold hook abuts against the lower bracket.

[0019] In the figure: 1. Upper mold cavity plate; 2. Lower mold cavity plate; 3. Middle mold cavity plate; 31. Middle mold top column; 4. Upper core; 5. Lower core; 6. Upper bracket; 61. First abutting hole; 7. Lower bracket; 71. Second abutting hole; 8. Top plate; 81. Second adjustment groove; 82. Abutting groove; 9. Top block; 91. First abutting protrusion; 10. Middle mold hook; 101. Abutting portion; 102. Second abutting protrusion; 11. Crossbeam bracket; 111. First adjustment groove. DETAILED DESCRIPTION

[0020] The following is a combination of the appended examples of the present invention Figure 1-5 , clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] As shown in the figure, a rubber injection mold with a three-layer mold cavity structure includes a lower mold cavity plate 2, a middle mold cavity plate 3 and an upper mold cavity plate 1 stacked from bottom to top. The lower end surface of the upper mold cavity plate 1 and the upper end surface of the middle mold cavity plate 3 are combined to form an upper mold cavity. The lower end surface of the middle mold cavity plate 3 and the upper end surface of the lower mold cavity plate 2 are combined to form a lower mold cavity. A plurality of upper cores 4 located in the upper mold cavity are arranged between the upper mold cavity plate 1 and the middle mold cavity plate 3. The middle mold cavity plate 3 and the lower mold cavity plate 2 are provided with several lower cores 5 located in the lower mold cavity, several ends of the upper cores 4 are passed out of the upper mold cavity and are fixedly connected to the upper bracket 6, and several ends of the lower cores 5 are passed out of the lower mold cavity and are fixedly connected to the lower bracket 7 located below the upper bracket 6. A group of driving structures are provided on both sides of the lower model cavity plate 2, and the driving structure cooperates with the injection machine to successively abut with the upper bracket 6, the middle model cavity plate 3 and the lower bracket 7 to drive the upper bracket 6, the middle model cavity plate 3 and the lower bracket 7 to move longitudinally.

[0022] Specifically, the driving structure includes a top plate 8, a top block 9 and a middle mold hook 10. The top plate 8 is arranged on one side of the lower model cavity plate 2 and is located below several middle mold top columns 31 fixedly connected to the side end of the middle model cavity plate 3 to cooperate with the injection machine. The top block 9 is fixedly connected to the top plate 8 and is located below the upper bracket 6, and a first abutment protrusion 91 is formed on the upper end of the top block 9. The upper bracket 6 is provided with a first abutment hole 61 that is aligned with and matches the first abutment protrusion 91. The middle mold hook 10 is fixedly connected to the middle mold and an abutment portion 101 is formed on the middle mold hook 10 and is located below the lower bracket 7. A second abutment protrusion 102 is formed on the abutment portion 101, and a second abutment hole 71 is provided on the lower bracket 7 that is aligned with and matches the second abutment protrusion 102.

[0023] In the above embodiment, when the mold is closed, the molding material is injected into the upper mold cavity and the lower mold cavity, so that the molding material is molded in the upper mold cavity and the lower mold cavity on the upper core 4 and the lower core 5 respectively to form an upper and lower layer of products. When the mold is opened, the upper mold cavity plate 1 moves upward under the drive of the injection molding machine, and then the injection molding machine drives the top plate 8 to move upward. In the process of the top plate 8 moving upward, the top block 9 that moves synchronously with the top plate 8 first contacts the upper bracket 6 and inserts the first abutting protrusion 91 into the first abutting hole 61, so that the top block 9 and the upper bracket 6 are abutted, so that the upper bracket 6 moves upward together with the top block 9, and the upper bracket 6 drives several upper cores 4 to move upward so that the product molded on the upper core 4 is separated from the middle mold cavity plate 3 to realize the ejection of the upper product. When the top plate 8 moves upward until the upper finished product is completely separated from the middle mold plate During separation, the top plate 8 contacts the middle mold top column 31 and drives the middle mold cavity plate 3 and the middle mold hook 10 to move upward, so that the middle mold cavity plate 3 is separated from the lower product formed on the lower core 5. When the top plate 8 moves upward until the middle mold cavity plate 3 is completely separated from the lower product, the abutting portion 101 of the middle mold hook 10 contacts the lower bracket 7 and the second abutting protrusion 102 is inserted into the second abutting hole 71, so that the middle mold hook 10 is abutted against the lower bracket 7, so that the lower bracket 7 moves upward with the middle mold hook 10, and the lower bracket 7 drives several lower cores 5 to move upward until the product formed on the lower core 5 is completely separated from the lower mold cavity plate 2 to realize the ejection of the lower product, thereby completing the mold opening operation. At this time, use an air gun to remove the products formed on the upper core 4 and the lower core 5. Through the above structure and method, without changing the projection area of ​​the mold, the number of mold cavities is increased by longitudinal setting, so that this three-layer mold can be directly cooperated with the manufacturer's original injection molding machine for production, thereby improving production efficiency while saving the cost of purchasing large-tonnage, large-worktable injection molding machines. In addition, through the action of the drive structure, the mold opening operation of this three-layer mold can be conveniently and accurately realized, and the drive structure has a simple structure and is easy to process.

[0024] Preferably, a crossbeam bracket 11 is fixedly connected to the top plate 8, and the top block 9 is fixedly connected to the end of the crossbeam bracket 11. A first adjusting slot 111 is provided on the crossbeam bracket 11, and two second adjusting slots 81 extending along the length direction of the upper mold cavity plate 1 are provided on the top plate 8. Two bolts pass through the first adjusting slot 111 and are screwed into the two second adjusting slots 81 respectively to achieve a fixed connection between the crossbeam bracket 11 and the top plate 8. Through the above structure, the position of the crossbeam bracket 11 fixedly connected to the top plate 8 can be adjusted after loosening the bolts, and the distance between the two top blocks 9 in the two driving structures in the length direction of the mold can be adjusted, so that the top block 9 can adapt to molds of different lengths to achieve mold opening operation.

[0025] Preferably, a plurality of abutment grooves 82 corresponding to and matching the middle mold top column 31 are provided on the upper edge of the top plate 8. Through the above structure, when the top plate 8 contacts the middle mold top column 31 during the mold opening process, the middle mold top column 31 is placed in the abutment groove 82. The abutment groove 82 acts on the position of the middle mold top column 31, so that the abutment between the middle mold cavity plate 3 and the top plate 8 is more stable, thereby ensuring the stability of the top plate 8 when driving the middle mold cavity plate 3 to move upward, thereby enhancing the accuracy of the mold opening operation.

[0026] Preferably, the first abutment protrusion 91 is in the shape of a quadrangular pyramid and the small end of the first abutment protrusion 91 faces the first abutment hole 61. Through the above structure, when the top column abuts against the upper bracket 6, the first abutment protrusion 91 can be more easily extended into the first abutment hole 61 and cooperate with the first abutment hole 61 to realize the abutment between the top column and the upper bracket 6, thereby ensuring the stability of the mold opening operation.

[0027] Preferably, the second abutting protrusion 102 is in a truncated cone shape and the small end of the second abutting protrusion 102 faces the second abutting hole 71. Through the above structure, the abutting portion 101 of the middle mold hook 10 abuts against the lower bracket 7, making it easier for the second abutting protrusion 102 to extend into the second abutting hole 71 and cooperate with the second abutting hole 71 to achieve the abutment between the middle mold hook 10 and the lower bracket 7, thereby ensuring the stability of the mold opening operation.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rubber injection mold with a three-layer mold cavity structure, comprising an upper mold cavity plate (1) and a lower mold cavity plate (2), characterized in that: The invention also includes a middle mold cavity plate (3) located between the upper mold cavity plate (1) and the lower mold cavity plate (2), a plurality of upper mold cores (4) are arranged between the upper mold cavity plate (1) and the middle mold cavity plate (3), a plurality of lower mold cores (5) are arranged between the middle mold cavity plate (3) and the lower mold cavity plate (2), the ends of the plurality of upper mold cores (4) are fixedly connected to the upper bracket (6), the ends of the plurality of lower mold cores (5) are fixedly connected to the lower bracket (7), and a group of driving structures are respectively arranged on both sides of the lower mold cavity plate (2), and the driving structures cooperate with the injection machine to successively abut against the upper bracket (6), the middle mold cavity plate (3) and the lower bracket (7) to drive the upper bracket (6), the middle mold cavity plate (3) and the lower bracket (7) to move longitudinally.

2. The rubber injection mold with a three-layer cavity structure according to claim 1, characterized in that: The driving structure comprises a top plate (8), a top block (9) and a middle mold hook (10), wherein the top plate (8) is arranged on one side of the lower mold cavity plate (2) and is located below a plurality of middle mold top columns (31) fixedly connected to the side end of the middle mold cavity plate (3), the top block (9) is fixedly connected to the top plate (8) and is located below the upper bracket (6), and a first abutting protrusion (91) is formed on the upper end of the top block (9), and a first abutting hole (61) aligned with and matched with the first abutting protrusion (91) is provided on the upper bracket (6), the middle mold hook (10) is fixedly connected to the middle mold, and an abutting portion (101) located below the lower bracket (7) is formed on the middle mold hook (10), a second abutting protrusion (102) is formed on the abutting portion (101), and a second abutting hole (71) aligned with and matched with the second abutting protrusion (102) is provided on the lower bracket (7).

3. The rubber injection mold with a three-layer cavity structure according to claim 2, characterized in that: A crossbeam support (11) is fixedly connected to the top plate (8), the top block (9) is fixedly connected to the end of the crossbeam support (11), a first adjustment slot (111) is provided on the crossbeam support (11), and two second adjustment slots (81) extending along the length direction of the upper mold cavity plate (1) are provided on the top plate (8), and two bolts pass through the first adjustment slot (111) and are screwed into the two second adjustment slots (81) respectively, thereby achieving a fixed connection between the crossbeam support (11) and the top plate (8).

4. The rubber injection mold with a three-layer cavity structure according to claim 2, characterized in that: The upper edge of the top plate (8) is provided with a plurality of abutment grooves (82) corresponding to and matching the middle mold top column (31).

5. The rubber injection mold with a three-layer cavity structure according to claim 2, characterized in that: The first abutting protrusion (91) is in the shape of a quadrangular pyramid, and the small end of the first abutting protrusion (91) faces the first abutting hole (61).

6. The rubber injection mold with a three-layer cavity structure according to claim 2, characterized in that: The second abutting protrusion (102) is in a truncated cone shape, and the small end of the second abutting protrusion (102) faces the second abutting hole (71).

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