Die capable of reducing cost

Abstract

A mold capable of reducing cost comprises an upper mold assembly and a lower mold assembly, the upper mold assembly comprises an upper mold plate and a fixed mold core, the lower mold assembly comprises a lower mold plate, a first movable mold core and a second movable mold core, a first mold core matching part and a second mold core matching part are integrally arranged on the upper mold plate, the fixed mold core is installed in the first mold core matching part, and the second mold core is installed in the second mold core matching part. The fixed mold core is installed in the first mold core matching part and matched with the first mold core matching part, the first movable mold core is installed in the second mold core matching part and matched with the second mold core matching part, a forming cavity is formed between the fixed mold core and the first movable mold core, the second movable mold core is installed on the lower mold plate, and the first movable mold core is connected with the second movable mold core in a matched mode. According to the die, an annular die core, an upper base plate and a lower base plate of a traditional die can be omitted, so that parts of the die are reduced, the size of the die is reduced, and the machining cost and the material cost of the die can be reduced; the mold frame can be reduced by two levels, and the injection molding cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold that can reduce costs. Background Technology

[0002] like Figures 6-7 As shown, a traditional centrifugal impeller mold includes a panel 111, a sprue plate 112, an upper pad plate 113, an upper template 114, a first fixed mold core 115, a second fixed mold core 116, a first moving mold core 117, a second moving mold core 118, a lower template 119, a lower pad plate 120, a square iron plate 121, and a base plate 122. The first fixed mold core 115 is an annular mold core. The second fixed mold core 116 and the first moving mold core 117 are installed inside the first fixed mold core 115. The first fixed mold core 115 is installed inside the upper template 114, and the second moving mold core 118 is installed inside the lower template 119. A forming cavity is provided between the second fixed mold core 116 and the first moving mold core 117. The upper pad plate 113 is located between the sprue plate 112 and the upper template 114, and the lower pad plate 120 is located between the lower template 119 and the square iron plate 121. This structure has many mold parts, resulting in a large mold volume, high mold material cost, and high mold processing cost.

[0003] Therefore, further improvements are necessary. Utility Model Content

[0004] The purpose of this utility model is to provide a cost-reducing mold that is simple in structure, has few parts, small in size, low in cost, and highly practical, so as to overcome the shortcomings of the prior art.

[0005] A cost-reducing mold designed for this purpose includes an upper mold assembly and a lower mold assembly. The upper mold assembly includes an upper template and a fixed mold core; the lower mold assembly includes a lower template, a first movable mold core, and a second movable mold core. The upper template integrally provides a first mold core mating part and a second mold core mating part. The fixed mold core is installed within the first mold core mating part, and the fixed mold core and the first mold core mating part cooperate with each other. The first movable mold core is installed within the second mold core mating part, and the first movable mold core and the second mold core mating part cooperate with each other. A molding cavity is provided between the fixed mold core and the first movable mold core. The second movable mold core is installed on the lower template, and the first movable mold core and the second movable mold core are connected and mated.

[0006] The upper mold assembly also includes a panel and a sprue plate. The top of the upper mold plate extends upward and is provided with a first support pad. The bottom of the sprue plate is supported on the first support pad and the fixed mold core. The panel is located above the sprue plate.

[0007] The lower mold assembly also includes a square iron and a base plate. The square iron is installed above the base plate, and a second support pad is provided on the top of the square iron extending upward. The bottom of the lower mold plate is supported on the second support pad.

[0008] The first mold core mating part has a first mounting groove on its inner side, and the fixed mold core is mounted on the first mounting groove.

[0009] The second mold core mating part has an installation hole on its inner side, and the first moving mold core is installed on the installation hole.

[0010] The first mold core mating part and the second mold core mating part form a stepped shape with each other.

[0011] The panel is equipped with a sprue component, and the lower part of the sprue component has a tapered part that extends into the sprue plate. The sprue component is equipped with a feed port, and the fixed mold core is equipped with a runner. The feed port, runner, and molding cavity are connected in sequence.

[0012] The bottom of the fixed mold core is provided with a protrusion, and the top of the first moving mold core is provided with a recess. The protrusion extends into the recess, and a molding cavity is formed between the protrusion and the recess.

[0013] The lower template has a second mounting groove and a third mounting groove that are stepped on each other. The lower part of the second moving mold core is mounted on the third mounting groove. A positioning ring is provided between the upper part of the second moving mold core and the lower template. The positioning ring is mounted on the second mounting groove.

[0014] Square iron blocks are respectively set on both sides of the lower mold assembly, forming a receiving cavity between the two square iron blocks. Support columns are set on the receiving cavity, and the support columns are installed on the base plate. The bottom of the lower mold plate is supported on the support columns.

[0015] The mold of this utility model has a first mold core mating part and a second mold core mating part integrally set on the upper mold plate. The fixed mold core is installed in the first mold core mating part and the fixed mold core and the first mold core mating part cooperate with each other. The first moving mold core is installed in the second mold core mating part and the first moving mold core and the second mold core mating part cooperate with each other. The ring mold core of the traditional mold can be eliminated. By setting a first support pad part extending upward from the top of the upper mold plate, and the bottom of the sprue plate is supported on the first support pad part and the fixed mold core, the upper pad of the traditional mold can be eliminated. By setting a second support pad part extending upward from the top of the square iron, and the bottom of the lower mold plate is supported on the second support pad part, the lower pad of the traditional mold can be eliminated. This reduces the number of mold parts, shrinks the mold volume, and reduces the mold processing cost and material cost. The mold frame can be reduced by 2 levels, reducing the injection molding cost. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the mold in one embodiment of the present invention.

[0017] Figure 2 This is a cross-sectional view of the mold from another position in one embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the overall structure of the mold in one embodiment of the present invention.

[0019] Figure 4 This is an exploded structural diagram of the upper template, fixed mold core, and first moving mold core in one embodiment of the present invention.

[0020] Figure 5 This is an exploded structural diagram of the lower template, the second moving mold core, and the positioning ring in one embodiment of the present invention.

[0021] Figure 6 This is a cross-sectional view of a traditional mold.

[0022] Figure 7 This is a schematic diagram of the overall structure of a traditional mold. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] See Figures 1-5 This mold, which could reduce costs, is used to produce centrifugal impellers. It includes an upper mold assembly A and a lower mold assembly B. The upper mold assembly A includes an upper template 1 and a fixed mold core 2. The lower mold assembly B includes a lower template 3, a first moving mold core 4, and a second moving mold core 5. The upper template 1 is integrally provided with a first mold core mating part 6 and a second mold core mating part 7. The fixed mold core 2 is installed in the first mold core mating part 6, and the fixed mold core 2 and the first mold core mating part 6 cooperate with each other. The first moving mold core 4 is installed in the second mold core mating part 7, and the first moving mold core 4 and the second mold core mating part 7 cooperate with each other. The first mold core mating part 6 and the second mold core mating part 7 are equivalent to the ring mold core of a traditional mold, that is, the ring mold core of a traditional mold is replaced by the mold frame itself, reducing the material cost of the ring mold core. A forming cavity 8 is provided between the fixed mold core 2 and the first moving mold core 4. The second moving mold core 5 is installed on the lower template 3, and the first moving mold core 4 and the second moving mold core 5 are connected and cooperated. The fixed mold core 2, the first moving mold core 4, and the second moving mold core 5 are arranged vertically in sequence.

[0025] The upper mold assembly A also includes a panel 9 and a sprue plate 10. The top of the upper mold plate 1 extends upward and is provided with a first support pad 11. The bottom of the sprue plate 10 is supported on the first support pad 11 and the fixed mold core 2. The panel 9 is located above the sprue plate 10. The first support pad 11 and the fixed mold core 2 are equivalent to the upper pad of a conventional mold.

[0026] The lower mold assembly B also includes a square iron 12 and a base plate 13. The square iron 12 is installed above the base plate 13. The top of the square iron 12 extends upward and is provided with a second support pad 14. The bottom of the lower mold plate 3 is supported on the second support pad 14. The square iron 12 is respectively arranged on both sides of the lower mold assembly B, and a receiving cavity 26 is formed between the two square iron 12. A support column 27 is provided on the receiving cavity 26. The support column 27 is installed on the base plate 13. The bottom of the lower mold plate 3 is supported on the support column 27. The second support pad 14 and the support column 27 are equivalent to the lower pad of a conventional mold.

[0027] The first mold core mating part 6 has a first mounting groove 15 on its inner side, and the fixed mold core 2 is mounted on the first mounting groove 15.

[0028] The second mold core mating part 7 has an mounting hole 16 on its inner side, and the first moving mold core 4 is mounted on the mounting hole 16.

[0029] The first mold core mating part 6 and the second mold core mating part 7 form a stepped shape with each other.

[0030] A sprue component 17 is installed on the panel 9. A tapered part 18 extending into the sprue plate 10 is provided at the lower part of the sprue component 17. A feed port 19 is provided on the sprue component 17. The tapered part 18 makes the lower part of the feed port 19 tapered, which serves to guide the feeding. A runner 20 is provided on the fixed mold core 2. The feed port 19, the runner 20 and the molding cavity 8 are connected in sequence. Molten plastic flows into the molding cavity 8 through the feed port 19 and the runner 20 in sequence, and the product is formed on the molding cavity 8.

[0031] The fixed mold core 2 has a protrusion 21 at the bottom and the first moving mold core 4 has a recess 22 at the top. The protrusion 21 extends into the recess 22, and a molding cavity 8 is formed between the protrusion 21 and the recess 22.

[0032] The lower template 3 is provided with a second mounting groove 23 and a third mounting groove 24 that are stepped to each other. The lower part of the second moving mold core 5 is mounted on the third mounting groove 24. A positioning ring 25 is provided between the upper part of the second moving mold core 5 and the lower template 3. The positioning ring 25 is mounted on the second mounting groove 23.

[0033] The table below shows the cost-benefit analysis of the traditional mold and the mold in this embodiment:

[0034]

[0035] As can be seen from the table above, the mold in this embodiment can significantly reduce costs compared to traditional molds.

[0036] The mold frame dimensions of this embodiment are 300*300*391mm, and the molding machine is 120T; the mold frame dimensions of the traditional mold are 350*350*457mm, and the molding machine requires 160T.

[0037] The table below shows the cost-benefit analysis of injection molding for traditional molds and the mold in this embodiment:

[0038]

[0039] As can be seen from the table above, the mold in this embodiment can significantly reduce injection molding costs compared to traditional molds.

[0040] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cost-reducing mold comprising an upper mold assembly (A) and a lower mold assembly (B), characterized by: The upper die assembly (A) comprises an upper die plate (1) and a fixed die core (2), the lower die assembly (B) comprises a lower die plate (3), a first movable die core (4) and a second movable die core (5), the upper die plate (1) is integrally provided with a first die core matching part (6) and a second die core matching part (7), the fixed die core (2) is installed in the first die core matching part (6) and matched with the first die core matching part (6), the first movable die core (4) is installed in the second die core matching part (7) and matched with the second die core matching part (7), the fixed die core (2) and the first movable die core (4) are provided with a forming cavity (8) therebetween, the second movable die core (5) is installed on the lower die plate (3), and the first movable die core (4) is connected with the second movable die core (5) in a matched mode.

2. The cost-reducible mold according to claim 1, characterized by: The upper die assembly (A) further comprises a face plate (9) and a nozzle plate (10), the upper die plate (1) is provided with a first supporting pad part (11) extending upward at the top thereof, the nozzle plate (10) is supported on the first supporting pad part (11) and the fixed die core (2) at the bottom thereof, and the face plate (9) is arranged above the nozzle plate (10).

3. The cost-reducible mold according to claim 2, characterized by: The lower die assembly (B) further comprises a square iron (12) and a bottom plate (13), the square iron (12) is installed above the bottom plate (13), the square iron (12) is provided with a second supporting pad part (14) extending upward at the top thereof, and the lower die plate (3) is supported on the second supporting pad part (14) at the bottom thereof.

4. The cost-reducible mold of claim 1, wherein: The first die core matching part (6) is provided with a first installation groove (15) at the inner side thereof, and the fixed die core (2) is installed on the first installation groove (15).

5. The cost-reducible mold of claim 4, wherein: The second die core matching part (7) is provided with an installation hole (16) at the inner side thereof, and the first movable die core (4) is installed on the installation hole (16).

6. The cost-reducible mold of claim 5, wherein: The first die core matching part (6) and the second die core matching part (7) are formed in a stepped mode.

7. The cost-reducible mold of claim 2, wherein: The face plate (9) is installed with a nozzle piece (17), the nozzle piece (17) is provided with a tapered part (18) extending into the nozzle plate (10) at the lower part thereof, the nozzle piece (17) is provided with a feeding port (19) at the upper part thereof, the fixed die core (2) is provided with a flow channel (20) thereon, and the feeding port (19), the flow channel (20) and the forming cavity (8) are communicated in sequence.

8. The cost-reducible mold of claim 1, wherein: The fixed die core (2) is provided with a protruding part (21) at the bottom thereof, the first movable die core (4) is provided with a recessed part (22) at the top thereof, the protruding part (21) extends into the recessed part (22), and the forming cavity (8) is formed between the protruding part (21) and the recessed part (22).

9. The cost-reducible mold of claim 1, wherein: The lower die plate (3) is provided with a second installation groove (23) and a third installation groove (24) in a stepped mode, the second movable die core (5) is installed on the third installation groove (24) at the lower part thereof, a positioning ring (25) is arranged between the second movable die core (5) and the lower die plate (3) at the upper part thereof, and the positioning ring (25) is installed on the second installation groove (23).

10. The cost-reducible mold of claim 3, wherein: The square irons (12) are arranged at the two sides of the lower die assembly (B) respectively, and a containing cavity (26) is formed between the two square irons (12), the containing cavity (26) is provided with a supporting column (27), the supporting column (27) is installed on the bottom plate (13), and the lower die plate (3) is supported on the supporting column (27) at the bottom thereof.

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