Material-saving die

Abstract

The utility model discloses a material-saving die. The material-saving die comprises a lower die and an upper die arranged on the lower die, a plurality of mold cavities are formed between the mold closing surface of the lower mold and the mold closing surface of the upper mold, every two adjacent mold cavities form a mold cavity group, the two mold cavities of the same mold cavity group are communicated through a sub-runner, and a reversing piece used for controlling the conduction direction of the sub-runner is arranged in the middle of the sub-runner; a plurality of main runners are arranged in the upper die, and the discharging end of each main runner is communicated with the reversing piece on one branch runner. Every two adjacent mold cavities form a group and are communicated through the corresponding sub-runner, the main runner is communicated with the sub-runners, one main runner supplies materials to the two mold cavities, the sub-runners are very short, the runner detour phenomenon is avoided, and materials are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a material-saving mold. Background Art

[0002] The pouring system of the existing injection mold usually enters from the upper mold feeding point and then moves forward into the mold bar of the mold, and then is divided into multiple flow grooves by the mold bar to enter the lower mold. Each flow groove feeds a mold cavity. The flow channel is very long and has many detours, which is not convenient for the processing and manufacturing of the mold cavity. At the same time, more material heads are generated, resulting in a large amount of molten material waste. Utility Model Content

[0003] In order to solve the above problems, the present application provides a material-saving mold, which can reduce material waste.

[0004] The purpose of the utility model is achieved through the following technical scheme: a material-saving mold, comprising a lower mold and an upper mold arranged on the lower mold; a plurality of mold cavities are formed between the mating surface of the lower mold and the mating surface of the upper mold, two adjacent mold cavities form a mold cavity group, and the two mold cavities in the same mold cavity group are connected through a branch channel, and a switching member for controlling the conducting direction of the branch channel is arranged in the middle of the branch channel; a plurality of main flow channels are arranged in the upper mold, and the discharge end of each of the main flow channels is connected to a switching member on the branch channel.

[0005] A pouring gate is arranged on the upper surface of the upper mold, and the feed end of the main channel is communicated with the pouring gate.

[0006] A plurality of lower mold cavities and lower runner cavities are arranged on the mating surface of the lower mold; upper mold cavities whose number and positions correspond one-to-one with the lower mold cavities, and upper runner cavities whose number and positions correspond one-to-one with the lower runner cavities are arranged on the mating surface of the upper mold; after the lower mold and the upper mold are mated, the lower mold cavity and the upper mold cavity jointly enclose the mold cavity, and the lower runner cavity and the upper runner cavity jointly enclose the runner.

[0007] The reversing member is arranged in the middle of the lower branch channel cavity, and its upper end protrudes from the closing surface of the lower mold; a socket connected to the discharge end of the main channel is arranged in the middle of the upper branch channel cavity, and after the lower mold and the upper mold are closed, the upper end of the reversing member is inserted into the socket to connect the reversing member with the main channel.

[0008] The reversing member includes a reversing column; a hexagonal screw hole connected to the main channel is arranged on the top of the reversing column, and a first connecting port, a second connecting port and a third connecting port are arranged on the hole wall of the hexagonal screw hole; the reversing column can rotate so that the hexagonal screw hole is connected to the branch channel via one or two of the first connecting port, the second connecting port and the third connecting port.

[0009] The lower die is also provided with a positioning assembly for fixing the reversing member.

[0010] The positioning assembly includes a mounting groove arranged on the lower mold, an insert block installed in the mounting groove, and a spring arranged between the insert block and the end wall of the mounting groove; a slide groove is arranged on the groove wall of the mounting groove, and a slider that is inserted into the slide groove is arranged on the insert block; three positioning holes are arranged on the reversing column and are respectively located below the first connecting port, the second connecting port and the third connecting port, and a plug that can be inserted into the positioning hole is arranged at the front end of the insert block.

[0011] A plugging head is detachably provided on the inlet of the main channel.

[0012] Compared with the prior art, this application has the following beneficial effects:

[0013] (1) In the utility model, two adjacent mold cavities are grouped together and connected via a branch runner, and the main runner is connected to the branch runner. One main runner supplies materials to the two mold cavities. The branch runner is very short, thus avoiding the bypass phenomenon of the runner and saving materials.

[0014] (2) The utility model can adjust the conduction direction of the branch channel through the reversing member, so that the material supply to one or more mold cavities therein can be controlled, and its flexibility is higher.

[0015] Some additional features of the present application may be explained in the following description. Some additional features of the present application will be apparent to those skilled in the art by inspection of the following description and corresponding drawings or understanding of the production or operation of the embodiments. The features disclosed in the present application may be realized and achieved by practice or use of various methods, means and combinations of the specific embodiments described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The exemplary embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation of the present application. In each figure, the same reference numeral represents the same component.

[0017] Figure 1 It is the front view of the utility model.

[0018] Figure 2 It is a top view of the lower mold of the utility model.

[0019] Figure 3 for Figure 2 A magnified schematic diagram of center A.

[0020] Figure 4 for Figure 2A magnified schematic diagram of point B in the middle.

[0021] Figure 5 It is a structural diagram of the commutator of the utility model.

[0022] Figure 6 It is a cross-sectional view of the upper mold and the lower mold of the utility model before they are molded together.

[0023] Figure 7 It is a cross-sectional view of the upper mold and the lower mold after the mold is closed.

[0024] Figure 8 It is a schematic diagram of fixing the reversing column of the positioning assembly of the utility model.

[0025] The figure marks in the above drawings are: 100-upper mold, 110-pouring gate, 120-main channel, 130-upper mold cavity, 140-jack, 150-upper branch channel cavity, 200-lower mold, 210-lower mold cavity, 220-lower branch channel cavity, 230-reversing member, 231-reversing column, 232-first connecting port, 233-second connecting port, 234-third connecting port, 235-positioning hole, 236-hexagonal screw hole, 240-positioning assembly, 241-insert block, 242-spring, 243-mounting groove, 244-slider, 245-slide groove, 246-plug. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0027] Example

[0028] like Figure 1 As shown, this embodiment discloses a material-saving mold, which includes a lower mold 200 and an upper mold 100 disposed on the lower mold 200. Among them, a plurality of mold cavities are formed between the mold surface of the lower mold 200 and the mold surface of the upper mold 100; for example, the number of mold cavities is four, two adjacent mold cavities are divided into a mold cavity group, and the two mold cavities in the same mold cavity group are connected through a runner. Since the two adjacent mold cavities are a group, the length of the runner is very short.

[0029] Specifically, Figure 2 , 3As shown, the lower mold 200 is provided with a plurality of lower mold cavities 210 and lower runner cavities 220 on the mold surface; the upper mold 100 is provided with upper mold cavities 130 whose number and position correspond to the lower mold cavities 210, and upper runner cavities 150 whose number and position correspond to the lower runner cavities 220. When the lower mold 200 is molded with the upper mold 100, the lower mold cavity 210 and the upper mold cavity 130 together enclose the above-mentioned mold cavity, and the lower runner cavity 220 and the upper runner cavity 150 together enclose the above-mentioned runner.

[0030] In addition, if Figure 1 As shown, the upper mold 100 is provided with a pouring gate 110 and a plurality of main runners 120, and the number of the main runners 120 is the same as the number of the branch runners, that is, the number of the main runners 120 is two. The pouring gate 110 is located on the upper surface of the upper mold 100, and the main runners 120 are located inside the upper mold 100. The feed end of one main runner 120 is connected to the pouring gate 110, and the discharge end thereof is connected to one of the branch runners; the feed end of another main runner 120 is also connected to the pouring gate 110, and the discharge end thereof is connected to another branch runner.

[0031] In this embodiment, two adjacent mold cavities are grouped together and connected via a branch channel. The main channel 120 is connected to the branch channel. One main channel supplies materials to the two mold cavities. The branch channel is very short to avoid bypassing the channel and save materials.

[0032] In addition, a switching element 230 for controlling the conducting direction of the branch channel is provided in the middle of the branch channel. Figure 2-4 As shown, the reversing member 230 is disposed in the middle of the lower runner cavity 220, and its upper end protrudes from the die surface of the lower die 200; accordingly, as shown Figure 6 , 7 As shown, the middle of the upper branch channel cavity 150 is provided with a plug hole 140 connected to the discharge end of the main channel 120. When the lower mold 200 and the upper mold 100 are molded together, the upper end of the reversing member 230 is inserted into the plug hole 140, so that the reversing member 230 is connected to the main channel 120.

[0033] like Figure 5 As shown, the reversing member 230 includes a reversing column 231. The top of the reversing column 231 is provided with a hexagonal screw hole 236 connected to the main channel 120, and the hole wall of the hexagonal screw hole 236 is provided with a first communication port 232, a second communication port 233 and a third communication port 234. Specifically, the first communication port 232 and the second communication port 233 are arranged opposite to each other, and the third communication port 234 is perpendicular to the connecting line between the first communication port 232 and the second communication port 233, as shown in FIG. Figure 5 shown.

[0034] The reversing column 231 can be rotated so that the hexagonal screw hole 236 is connected to the diverter channel via one or two of the first connecting port 232, the second connecting port 233 and the third connecting port 234. That is, when it is necessary to inject material into two mold cavities of the same group, before the upper mold 100 and the lower mold 200 are closed, a hexagonal wrench is inserted into the hexagonal screw hole 236, and the reversing column 231 is rotated so that the first connecting port 232 and the second connecting port 233 are both connected to the diverter channel, and then the material can be injected into the two mold cavities at the same time. When it is necessary to inject material into one of the two mold cavities of the same group, the reversing column 231 is rotated so that the third connecting port 234 is connected to the mold cavity to be injected with the material. In addition, a plugging head is detachably provided on the feed port of the main channel 120. When it is not necessary to inject material into a certain group of mold cavities, the plugging head can be used to block the main channel 120 corresponding to the group of mold cavities.

[0035] In this embodiment, the conducting direction of the branch channel can be adjusted by the reversing member 230, so the material supply to one or more mold cavities therein can be controlled, which has higher flexibility.

[0036] In addition, the lower mold 200 is also provided with a positioning assembly 240 for fixing the reversing member 230. Specifically, Figure 4 , 8 As shown, the positioning assembly 240 includes a mounting groove 243 provided on the lower mold 200, an insert block 241 installed in the mounting groove 243, and a spring 242 provided between the insert block 241 and the end wall of the mounting groove 243. Slide grooves 245 are provided on two opposite groove walls of the mounting groove 243, and sliders 244 are provided on both sides of the insert block 241 to be inserted into the slide grooves 245; thus, the insert block 241 can move in the mounting groove 243 and will not fall out of the mounting groove 243.

[0037] Correspondingly, such as Figure 5 As shown, the reversing column 231 is provided with three positioning holes 235 respectively located below the first communication port 232, the second communication port 233 and the third communication port 234, and the front end of the plug block 241 is provided with a plug 246 that can be inserted into the positioning holes 235. The plug block 241 is pushed backward to make the plug 246 disengage from the positioning hole 235, and the reversing column 231 can be rotated at this time; when the position of the reversing column 231 is adjusted, the plug block 241 is released, and the plug 246 is inserted into the corresponding positioning hole 235 under the push of the spring to position the reversing column 231, as shown in FIG. Figure 8 shown.

[0038] It should be noted that all features disclosed in this specification, or steps in all methods or processes disclosed, except for mutually exclusive features and / or steps, can be combined in any manner.

[0039] In addition, the above specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the utility model, and these solutions also belong to the disclosure scope of the utility model and fall within the protection scope of the utility model. Those skilled in the art should understand that the utility model specification and its drawings are illustrative and do not constitute a limitation of the claims. The protection scope of the utility model is defined by the claims and their equivalents.

Claims

1. A material-saving mold, characterized in that: The invention comprises a lower mold (200) and an upper mold (100) arranged on the lower mold (200); a plurality of mold cavities are formed between the mold surfaces of the lower mold (200) and the upper mold (100); two adjacent mold cavities form a mold cavity group; two mold cavities in the same mold cavity group are connected via a branch channel; a switching member (230) for controlling the conducting direction of the branch channel is arranged in the middle of the branch channel; a plurality of main flow channels (120) are arranged in the upper mold (100); a discharge end of each of the main flow channels (120) is connected to a switching member (230) on the branch channel.

2. The material-saving mold according to claim 1, characterized in that: The upper surface of the upper mold (100) is provided with a pouring gate (110), and the feed end of the main channel (120) is connected to the pouring gate (110).

3. The material-saving mold according to claim 1, characterized in that: A plurality of lower mold cavities (210) and lower runner cavities (220) are arranged on the mold surface of the lower mold (200); upper mold cavities (130) whose number and positions correspond one-to-one with the lower mold cavities (210) and upper runner cavities (150) whose number and positions correspond one-to-one with the lower runner cavities (220) are arranged on the mold surface of the upper mold (100); after the lower mold (200) and the upper mold (100) are molded together, the lower mold cavity (210) and the upper mold cavity (130) together enclose the mold cavity, and the lower runner cavity (220) and the upper runner cavity (150) together enclose the runner.

4. The material-saving mold according to claim 3, characterized in that: The reversing member (230) is arranged in the middle of the lower branch channel cavity (220), and its upper end protrudes from the mating surface of the lower mold (200); the middle of the upper branch channel cavity (150) is provided with a plug hole (140) connected to the discharge end of the main channel (120); after the lower mold (200) and the upper mold (100) are mated, the upper end of the reversing member (230) is inserted into the plug hole (140) to connect the reversing member (230) with the main channel (120).

5. The material-saving mold according to claim 4, characterized in that: The reversing member (230) comprises a reversing column (231); a hexagonal screw hole (236) communicating with the main flow channel (120) is arranged at the top of the reversing column (231); a first communicating port (232), a second communicating port (233) and a third communicating port (234) are arranged on the hole wall of the hexagonal screw hole (236); the reversing column (231) is rotatable so that the hexagonal screw hole (236) is communicated with the branch flow channel via one or two of the first communicating port (232), the second communicating port (233) and the third communicating port (234).

6. The material-saving mold according to claim 5, characterized in that: The lower die (200) is also provided with a positioning assembly (240) for fixing the reversing member (230).

7. The material-saving mold according to claim 6, characterized in that: The positioning assembly (240) comprises a mounting groove (243) arranged on the lower mold (200), an insert block (241) installed in the mounting groove (243), and a spring (242) arranged between the insert block (241) and the end wall of the mounting groove (243); a slide groove (245) is arranged on the groove wall of the mounting groove (243), and a slider (244) is arranged on the insert block (241) to be inserted into the slide groove (245); three positioning holes (235) are arranged on the reversing column (231) and are respectively located below the first connecting port (232), the second connecting port (233) and the third connecting port (234); a plug (246) capable of being inserted into the positioning hole (235) is arranged at the front end of the insert block (241).

8. The material-saving mold according to claim 2, characterized in that: A plugging head is detachably provided on the inlet of the main channel (120).

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