Injection molding runner ejection mold

Abstract

The utility model discloses an injection molding runner ejection mold which comprises a lower mold assembly and an upper mold assembly matched with the lower mold assembly for injection molding, and an injection molding assembly used for completing injection molding is arranged between the lower mold assembly and the upper mold assembly. The upper mold assembly comprises a feeding port used for feeding injection molding fluid and a runner communicated with the feeding port and used for guiding the injection molding fluid to the injection molding assembly, one side of the runner is communicated with the feeding port, and the other side of the runner is communicated with a cavity in the injection molding assembly. A plurality of ejection mechanisms are arranged on one side, close to the feeding hole, of the runner; and the ejection mechanisms are used for ejecting the runner out to be separated from the feeding hole when the mold is opened after injection molding is completed. And when the mold is opened after injection molding is completed, the ejection mechanism can eject the runner out to be separated from the feeding hole, so that the runner can be conveniently taken down for replacement or cleaning subsequently, the normal operation of the mold and the quality of an injection molding product are prevented from being influenced by the runner, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0002] The utility model relates to injection mould technical field especially relates to a injection flow channel ejection mould.

BACKGROUND

[0004] In the injection molding process, the flow channel plays a role in introducing molten plastic into the mold cavity, ensuring that the plastic can be evenly and fully filled with the mold. When the mold is injected with plastic through a fine water gap flow channel, the fine water gap flow channel is prone to sticking to the mold during the production process, and it cannot fall off the mold by its own weight. When the flow channel sticks to the mold, it will affect the processing efficiency and will affect the injection molding effect. At this time, it needs to be taken down by artificial or mechanical hand and spend time to clean or replace. The flow channel sticking to the mold not only increases the difficulty of taking out the flow channel, but also reduces the overall efficiency of the injection molding process. Therefore, a mold that can eject the flow channel when the mold is opened to facilitate its removal is needed to solve the problem of difficult removal of the flow channel sticking to the mold.

SUMMARY OF UTILITY MODEL

[0006] To solve the technical problem that the flow channel is easy to stick to the water gap plate, and it is difficult to take down the flow channel by artificial or mechanical hand, the utility model provides an injection flow channel ejection mold.

[0007] The utility model is realized by the following technical schemes:

[0008] An injection flow channel ejection mold, comprising a lower mold assembly and an upper mold assembly cooperating with the lower mold assembly for injection molding, an injection molding assembly is arranged between the lower mold assembly and the upper mold assembly for completing injection molding, the upper mold assembly comprises a feed port for feeding injection fluid and a flow channel in communication with the feed port for guiding injection fluid to the injection molding assembly, one side of the flow channel is communicated with the feed port, and the other side is communicated with a cavity in the injection molding assembly, a plurality of ejection mechanisms are arranged on one side of the flow channel close to the feed port for ejecting the flow channel to separate from the feed port when the mold is opened after completing injection molding.

[0009] The injection flow channel ejection mold as described above, the ejection mechanism comprises an ejection piece directly in contact with the flow channel and a matching piece corresponding to the ejection piece, and an elastic piece is arranged between the ejection piece and the matching piece for ejecting the ejection piece to separate from the matching piece.

[0010] The injection flow channel ejection mold as described above, the ejection piece is a stepped column, the ejection piece comprises a first column in contact with the flow channel and a second column matched with the matching piece, a third column is arranged between the first column and the second column for limiting, and the diameter of the third column is greater than the diameter of the first column and the second column.

[0011] The injection flow channel ejection mold as described above, the matching piece is a block structure, the matching piece is provided with a mounting hole for mounting the elastic piece and a positioning hole coaxial with the mounting hole for matching the second column.

[0012] The injection flow channel ejection mold as described above, the elastic piece is an elastic spring arranged on the second column.

[0013] The injection flow channel ejection mold as described above, the upper mold assembly further comprises a panel and a nozzle plate adjacent to the panel, the feeding port is arranged in the panel and the nozzle plate, and the flow channel is arranged on the nozzle plate away from the panel.

[0014] The injection flow channel ejection mold as described above, the panel is provided with a matching hole corresponding to the matching piece.

[0015] The injection flow channel ejection mold as described above, the nozzle plate is provided with a first hole corresponding to the matching piece and the third column on the side close to the panel, and a second hole corresponding to the first column on the side close to the flow channel.

[0016] The injection flow channel ejection mold as described above, in the closed mold state, the sum of the thickness of the nozzle plate and the aperture length of the second hole is equal to the axial length of the ejection piece, and the axial length of the first column is greater than the aperture length of the second hole.

[0017] The injection flow channel ejection mold as described above, the ejection mechanism is symmetrically arranged with respect to the feeding port, and the nozzle plate is provided with a third hole corresponding to the matching piece on the side close to the panel.

[0018] Compared with the prior art, the injection flow channel ejection mold has the following beneficial effects:

[0019] 1. When the mold is opened after injection molding, the ejection mechanism can eject the flow channel away from the feeding port, facilitating subsequent removal, replacement or cleaning of the flow channel, avoiding the influence of the flow channel on the normal operation of the mold and the quality of the injection molded product, and improving the production efficiency.

[0020] 2. The first column contacts the flow channel and can cooperate with the elastic piece to eject the flow channel, and the second column can limit the position of the ejection piece, avoiding the ejection piece from being separated, and providing convenience for subsequent processing using the mold.

[0021] 3. The axial length of the first column is greater than the hole diameter length of the second hole, which can guarantee the height of the third column deviates from the bottom of the first hole near the second hole side by a distance when the mold is closed, which can better compress the elastic member, thereby having the elastic potential energy to eject the ejector and separate the runner. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application;

[0025] Figure 2 It is Figure 1 a schematic diagram of the exploded view;

[0026] Figure 3 It is a schematic diagram of the cross-section of the present application;

[0027] Figure 4 It is Figure 3 a schematic diagram of the enlarged view of area A;

[0028] Figure 5 It is a schematic diagram of the panel, water gap plate, runner and ejector mechanism structure of the present application;

[0029] Figure 6 It is Figure 5 a schematic diagram of the exploded view;

[0030] Figure 7 It is Figure 6 a cross-sectional view;

[0031] Figure 8 It is Figure 7 a schematic diagram of the enlarged view of area B;

[0032] Figure 9 It is a schematic diagram of the ejector mechanism structure of the present application;

[0033] Figure 10 It is Figure 9 a schematic diagram of the exploded view.

[0034] Among them, the corresponding signs are as follows:

[0035] 1, the lower die assembly; 2, the upper die assembly; 21, the feed port; 22, the runner; 23, the ejection mechanism; 231, the ejector; 2311, the first column; 2312, the second column; 2313, the third column; 232, the matching piece; 2321, the mounting hole; 2322, the alignment hole; 233, the elastic piece; 24, the panel; 241, the matching hole; 25, the nozzle plate; 251, the first hole; 252, the second hole; 253, the third hole; 3, the injection molding assembly.

DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and do not limit the utility model.

[0038] The specific examples, in combination Figures 1 to 10 with the drawings, further illustrate the technical solutions of the utility model. An injection molding runner ejection mold, comprising a lower die assembly 1 and an upper die assembly 2 cooperating with the lower die assembly 1 for injection molding, an injection molding assembly 3 is arranged between the lower die assembly 1 and the upper die assembly 2 for completing injection molding, the upper die assembly 2 comprises a feed port 21 for feeding injection fluid and a runner 22 in communication with the feed port 21 for guiding injection fluid to the injection molding assembly 3, one side of the runner 22 is communicated with the feed port 21, and the other side is communicated with a cavity in the injection molding assembly 3, and a plurality of ejection mechanisms 23 are arranged on the side of the runner 22 close to the feed port 21 for ejecting the runner 22 out of the feed port 21 after completing injection molding. In the mold closing state during injection molding, the ejection mechanisms 23 remain in a stationary state in the upper die assembly 2, and when the mold is opened after completing injection molding, the ejection mechanisms 23 can eject the runner 22 out of the feed port 21, and in the continuous production process, the runner 22 can be ejected and fallen out of the feed port 21, which facilitates manual or mechanical hand removal of the runner, thereby maintaining and cleaning the mold to ensure normal operation of the mold and product quality.

[0039] In the embodiment, the injection molding assembly 3 comprises a plurality of injection molding cavities, the runner 22 is communicated with the feed port 21 on one side and with the injection molding cavities on the other side to complete the guiding of injection fluid to the injection molding assembly 3 for completing injection molding.

[0040] In the embodiment, the ejection mechanism 23 comprises an ejection piece 231 in contact with the flow channel 22 and a matching piece 232 corresponding to the ejection piece 231, and an elastic piece 233 is arranged between the ejection piece 231 and the matching piece 232 for ejecting the ejection piece 231 to separate it from the matching piece 232. The ejection mechanism 23 stores elastic potential energy in the mold closing state through the elastic piece 233, and converts the elastic potential energy into mechanical energy to push the ejection piece 231 when the mold is opened, thereby ejecting the flow channel 22 from the feeding port 21, facilitating subsequent removal of the flow channel 22 by artificial or mechanical hand, and facilitating management of the mold.

[0041] Further, the ejection piece 231 comprises a first column 2311 in contact with the flow channel 22 and a second column 2312 matched with the matching piece 232, and a third column 2313 for limiting is arranged between the first column 2311 and the second column 2312. The diameter of the third column 2313 is greater than the diameter of the first column 2311 and the second column 2312. As a preferred embodiment of the present scheme, the ejection piece 231 is a stepped column capable of guiding and limiting. The first column 2311 is in contact with the flow channel 22 and can cooperate with the elastic piece 233 to eject the flow channel 22. The second column 2312 can limit the position of the ejection piece 231 to avoid the ejection piece 231 from disengaging.

[0042] Further, the matching piece 232 is provided with a mounting hole 2321 for mounting the elastic piece 233 and an alignment hole 2322 coaxial with the mounting hole 2321 for matching the second column 2312. The matching piece 232 can mount the elastic piece 233, and the mounting hole 2321 and the third column 2313 form a space for accommodating the elastic piece 233.

[0043] In the mold closing state, the elastic piece 233 contracts between the mounting hole 2321 and the third column 2313 to accumulate elastic potential energy; in the mold opening state, the elastic piece 233 converts the accumulated elastic potential energy into mechanical energy to push the third column 2313 away from the matching piece 232, thereby driving the ejection piece 231 to move to eject the flow channel 22 from the feeding port 21.

[0044] Further, the elastic piece 233 is an elastic spring, and the elastic piece 233 is arranged on the second column 2312. The elastic piece 233 can stretch and contract on the second column 2312, and the second column 2312 can provide limiting and guiding for the elastic piece 233.

[0045] In the embodiment, the upper die assembly 2 further comprises a panel 24 and a nozzle plate 25 adjacent to the panel 24, the feeding port 21 is arranged in the panel 24 and the nozzle plate 25, and the runner 22 is arranged on the nozzle plate 25 away from the panel 24. The panel 24 is a mold surface, and the feeding port 21 is arranged on the panel 24 and connected with the runner 22.

[0046] Further, the panel 24 is provided with a matching hole 241 corresponding to the matching part 232. The matching hole 241 is matched with the matching part 232 in the clamped state, and can guide and position the matching part 232.

[0047] Further, as a preferred embodiment of the present application, the matching part 232 is a block structure corresponding to the matching hole 241.

[0048] Further, the nozzle plate 25 is provided with a second hole 252 corresponding to the first column 2311 near the runner 22, and is provided with a first hole 251 corresponding to the matching part 232 and the third column 2313 near the panel 24 and adjacent to the second hole 252, and is provided with a third hole 253 corresponding to the matching part 232 near the panel 24. The aperture of the first hole 251 is larger than the aperture of the second hole 252, the ejector 231 can move between the first hole 251 and the second hole 252, and the third column 2313 can move in the first hole 251 and be limited to move in the second hole 252, which can avoid the ejector 231 from falling off when the ejector 231 ejects the runner 22, and the ejector 231 can be taken out in the direction away from the second hole 252, which is convenient for the management of the ejector 231.

[0049] Further, the length of the ejector 231 is limited by the aperture length of the matching hole 241, the first hole 251 and the second hole 252.

[0050] In the clamped state, the sum of the aperture lengths of the matching hole 241, the first hole 251, the second hole 252 and the third hole 253 is greater than or equal to the axial length of the ejector 231, and the axial length of the first column 2311 is greater than the aperture length of the second hole 252. The axial length of the first column 2311 is greater than the aperture length of the second hole 252, which can ensure that the height of the third column 2313 deviates from the bottom of the first hole 251 near the second hole 252 by a distance when clamped, which can better compress the elastic part 233, thereby having the energy to eject the ejector 231 to separate the runner 22;

[0051] In the open mold state, the nozzle plate 25 is separated from the face plate 24, the third column 2313 is moved to the bottom of the first hole 251 close to the second hole 252 with the ejection movement of the elastic member 233, thereby driving the ejector 231 to eject a distance, ejecting the flow channel 22 from the feed port 21, and ensuring that the ejector 231 can continue to work next time, realizing automatic production of the mold.

[0052] Further, the injection flow channel ejection mold is provided with a plurality of ejection mechanisms 23, the ejection mechanisms 23 are symmetrically arranged about the feed port 21, and the ejector 231 is arranged on the main flow channel of the flow channel 22 deviated from one side of the feed port 21.

[0053] The working principle of the embodiment is as follows:

[0054] The injection flow channel ejection mold provided by the utility model can eject the flow channel 22 from the nozzle plate 25 by the ejector 231, facilitate manual or mechanical hand to take down the flow channel 22, and improve the production efficiency of injection production, and the specific working principle is as follows:

[0055] In the closed mold state, the ejector 231 is in contact with the flow channel 22 on one side and the face plate 24 on the other side, the elastic member 233 is compressed and accumulates elastic potential energy in the ejector 231 and the cooperating member 232, and the height of the third column 2313 deviates from the bottom of the first hole 251 close to the second hole 252 by a distance; in the open mold state, the nozzle plate 25 is separated from the face plate 24, the third column 2313 is moved to the bottom of the first hole 251 close to the second hole 252 with the ejection movement of the elastic member 233, thereby driving the ejector 231 to eject a distance, thereby ejecting the flow channel 22 from the nozzle plate 25, and further realizing the separation of the flow channel 22 from the nozzle plate 25, facilitating the subsequent manual or mechanical hand to pick up the flow channel 22.

Claims

1. An injection molding runner ejection mold, characterized in that, The system includes a lower mold assembly (1) and an upper mold assembly (2) that cooperates with the lower mold assembly (1) for injection molding. An injection molding assembly (3) for completing injection molding is provided between the lower mold assembly (1) and the upper mold assembly (2). The upper mold assembly (2) includes a feed port (21) for feeding injection molding fluid and a flow channel (22) communicating with the feed port (21) for guiding the injection molding fluid to the injection molding assembly (3). One side of the flow channel (22) is connected to the feed port (21), and the other side is connected to the cavity inside the injection molding assembly (3). On the side of the flow channel (22) near the feed port (21), there are multiple ejection mechanisms (23) that eject the flow channel (22) from the feed port (21) when the mold is opened after injection molding is completed.

2. The injection molding runner ejection mold according to claim 1, characterized in that, The ejection mechanism (23) includes an ejector (231) that is in direct contact with the flow channel (22) and a mating member (232) corresponding to the ejector (231). An elastic member (233) is provided between the ejector (231) and the mating member (232) for ejecting the ejector (231) so that it separates from the mating member (232).

3. The injection molding runner ejection mold according to claim 2, characterized in that, The ejector (231) is a stepped column. The ejector (231) includes a first column (2311) that contacts the flow channel (22) and a second column (2312) that cooperates with the mating component (232). A third column (2313) for limiting is provided between the first column (2311) and the second column (2312). The diameter of the third column (2313) is larger than the diameter of the first column (2311) and the second column (2312).

4. The injection runner ejection mold according to claim 3, characterized in that, The mating component (232) is a block structure. The mating component (232) is provided with a mounting hole (2321) for mounting the elastic component (233) and a positioning hole (2322) coaxial with the mounting hole (2321) for mating with the second column (2312).

5. The injection molding runner ejection mold according to claim 3, characterized in that, The elastic element (233) is an elastic spring provided on the second column (2312).

6. The injection runner ejection mold according to claim 3, characterized in that, The upper mold assembly (2) also includes a panel (24) and a sprue plate (25) adjacent to the panel (24). The feed port (21) is inserted into the panel (24) and the sprue plate (25). The flow channel (22) is located on the sprue plate (25) on the side away from the panel (24).

7. The injection runner ejection mold according to claim 6, characterized in that, The panel (24) is provided with a mating hole (241) corresponding to the mating part (232).

8. The injection runner ejection mold according to claim 7, characterized in that, The sprue plate (25) has a first hole (251) on the side near the panel (24) that corresponds to the mating part (232) and the third column (2313), and the sprue plate (25) has a second hole (252) on the side near the flow channel (22) that corresponds to the first column (2311).

9. The injection runner ejection mold according to claim 8, characterized in that, When the mold is closed, the sum of the thickness of the sprue plate (25) and the diameter length of the second hole (252) is equal to the axial length of the ejector (231), and the axial length of the first column (2311) is greater than the diameter length of the second hole (252).

10. The injection runner ejection mold according to claim 6, characterized in that, The ejector mechanism (23) is symmetrically arranged about the feed inlet (21), and the sprue plate (25) is provided with a third hole (253) on the side near the panel (24) that corresponds to the mating part (232).

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