Injection mold with detachable arc-shaped mold core

Abstract

The utility model discloses an injection mold with a detachable arc-shaped mold core, which comprises a lower mold assembly and an upper mold assembly matched with the lower mold assembly for injection molding, and a plurality of injection molding assemblies used for completing injection molding are 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, and the injection molding assembly comprises a detachable left mold core used for forming an injection molding cavity and a right mold core matched with the left mold core. And a plurality of mold cores which are matched to form an arc-shaped mold core and are matched with the runners to guide injection molding fluid are arranged between the left mold core and the right mold core. And the left mold core and the right mold core can be detachably matched with the mold core, so that a product can be conveniently detached and taken down after injection molding is completed, and meanwhile, the right mold core and the right mold core can be replaced to realize injection molding of different products.

Description

TECHNICAL FIELD

[0002] The utility model relates to injection mold technical field especially relates to a kind of injection mold with detachable arc core. BACKGROUND

[0004] The existing injection mold faces significant technical challenges when forming arc-shaped plastic parts. Due to the inherent geometric characteristics of the arc-shaped surface, the traditional integral core is prone to interference with the product during demolding, resulting in a sharp increase in demolding force and deterioration of product surface quality.

[0005] When the arc curvature radius is less than 50mm, the conventional ejection system is difficult to achieve smooth demolding, often requiring the assistance of complex hydraulic core-pulling mechanisms, which significantly increases the mold manufacturing cost and failure risk. At the same time, the cooling uniformity of the arc-shaped structure is difficult to control, and the anisotropic shrinkage of the material under the constraint of the core can cause dimensional deviation, severely restricting the production qualification rate of precision arc-shaped parts. Therefore, it is urgent to develop a new type of detachable core structure to ensure the forming precision while improving the maintainability of the mold. SUMMARY

[0007] To solve the above technical problems, the utility model provides an injection mold with detachable arc-shaped core.

[0008] The utility model is realized by the following technical solutions:

[0009] An injection mold with detachable arc-shaped core, comprising a lower mold assembly and an upper mold assembly cooperating with the lower mold assembly for injection molding, a plurality of injection assemblies for completing injection molding are provided between the lower mold assembly and the upper mold assembly, the upper mold assembly includes a feed port for feeding injection fluid and a flow channel communicating with the feed port for guiding injection fluid to the injection assembly, the injection assembly includes a detachable left core pin for forming an injection cavity and a right core pin cooperating with the left core pin, a plurality of core pins are provided between the left core pin and the right core pin for cooperating to form an arc-shaped core and guiding injection fluid with the flow channel.

[0010] As described above, an injection mold with detachable arc-shaped core, the left core pin is provided with a first arc-shaped groove, the right core pin is provided with a second arc-shaped groove corresponding to the first arc-shaped groove, the first arc-shaped groove and the second arc-shaped groove can form an injection cavity for injection molding of arc-shaped core parts when cooperating with the core.

[0011] As described above, an injection mold with detachable arc-shaped core, the specific shape of the first arc-shaped groove and the second arc-shaped groove corresponds to the shape of the product to be injection molded, and the left core pin and the right core pin can be replaced to realize the injection molding of different injection products.

[0012] The injection mold with detachable arc-shaped mold core has a guide hole on the mold core, which cooperates with the flow channel to guide the injection fluid.

[0013] The injection mold with detachable arc-shaped mold core has a linear guide hole, and the flow channel includes a main flow channel, one side of which is connected with the feeding port, and the other side is provided with a plurality of branch flow channels corresponding to the guide hole, which are used for guiding the injection fluid to the injection cavity.

[0014] The injection mold with detachable arc-shaped mold core has an upper mold assembly including an upper fixed plate and a second plate adjacent to the upper fixed plate, and the second plate is provided with a female mold plate on the side away from the upper fixed plate, and the feeding port is arranged on the upper fixed plate.

[0015] The injection mold with detachable arc-shaped mold core has a flow channel connected with the feeding port, and the female mold plate is provided with a mounting plate for mounting the flow channel, and the female mold plate is provided with a plurality of first holes arranged obliquely, and the left mold core and the right mold core are provided with a plurality of second holes corresponding to the first holes, and the upper mold assembly is provided with a plurality of corresponding columns corresponding to the first holes and the second holes, and the corresponding columns are arranged on the side of the mounting plate close to the female mold plate, and are used for cooperating with the injection assembly.

[0016] The injection mold with detachable arc-shaped mold core has a plurality of second holes arranged on the left mold core and the right mold core respectively, and the second holes are symmetrically arranged about the straight line formed by the mold core in the same injection assembly.

[0017] The injection mold with detachable arc-shaped mold core has a lower mold assembly including a lower fixed plate and a male mold plate for bearing the injection assembly, and the injection assembly is arranged on the male mold plate.

[0018] The injection mold with detachable arc-shaped mold core has a plurality of second holes arranged on the left mold core and the right mold core respectively, and the second holes are symmetrically arranged about the straight line formed by the mold core in the same injection assembly.

[0019] Compared with the prior art, the injection mold with detachable arc-shaped mold core has the following beneficial effects:

[0020] 1. The left die core, the right die core can be detachable with the mold core, so that after injection molding is completed, it is convenient to remove the product, and the left die core and the right die core can be replaced to realize injection molding of different products;

[0021] 2. When the injection molding work is completed, the nozzle at the end of the flow channel is located at the inner ring part of the arc-shaped injection molded product, and when the arc-shaped core part is removed, the dispensing part is located at the inner side, which can ensure the beauty of the arc-shaped injection molded product. BRIEF DESCRIPTION OF DRAWINGS

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

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

[0025] Figure 2 It is a schematic diagram of the present application;

[0026] Figure 3 It is another schematic diagram of the present application;

[0027] Figure 4 It is another perspective view of Figure 3 ;

[0028] Figure 5 It is an enlarged schematic diagram of the A area of Figure 4 ;

[0029] Figure 6 It is another perspective view of Figure 3 ;

[0030] Figure 7 It is an enlarged schematic diagram of the B area of Figure 6 ;

[0031] Figure 8 It is another perspective view of Figure 2 ;

[0032] Figure 9 It is a partial exploded schematic diagram of the lower die assembly and the injection molding assembly of the present application;

[0033] Figure 10 It is an enlarged schematic diagram of the C area of Figure 9 ;

[0034] Figure 11 It is another perspective view of Figure 9 ;

[0035] Figure 12 It is an enlarged schematic diagram of the D area of Figure 11 .

[0036] Wherein, the reference signs are as follows:

[0037] 1, the lower die assembly; 11, the lower fixed plate; 12, the male die plate; 121, the limiting piece; 1211, the third hole; 2, the upper die assembly; 21, the feed inlet; 22, the runner; 221, the main runner; 222, the branch runner; 23, the upper fixed plate; 24, the second plate; 25, the female die plate; 251, the mounting plate; 252, the first hole; 26, the corresponding column; 3, the injection molding assembly; 31, the left core pin; 311, the first arc-shaped groove; 312, the first connecting rod; 32, the right core pin; 321, the second arc-shaped groove; 322, the second connecting rod; 33, the core; 331, the flow guide hole; 34, the second hole.

DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clearly understood, 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 not to limit the utility model.

[0040] Specific examples, in combination Figures 1 to 12 with the drawings, further illustrate the technical scheme of the utility model. An injection mold with detachable arc-shaped core, comprising a lower die assembly 1 and an upper die assembly 2 cooperating with the lower die assembly 1 for injection molding, a plurality of injection molding assemblies 3 are 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 inlet 21 for feeding injection fluid and a runner 22 in communication with the feed inlet 21 for guiding injection fluid to the injection molding assembly 3, the injection molding assembly 3 comprises a left core pin 31 for forming an injection cavity and a right core pin 32 cooperating with the left core pin 31, a plurality of core pins 33 are arranged between the left core pin 31 and the right core pin 32 for cooperating to form an arc-shaped core and cooperating with the runner 22 to guide injection fluid. The left core pin 31 and the right core pin 32 can be detachably cooperated with the core pin 33, so that the product can be easily removed after injection molding, and the left core pin 31 and the right core pin 32 can be replaced to realize injection molding of different products.

[0041] Further, the core pin 33 is provided with a flow guide hole 331 for cooperating with the runner 22 to guide injection fluid, one end of the flow guide hole 331 is arranged on the top surface of the core pin 33, and the other end is arranged on the side surface of the core pin 33 close to the injection cavity. The flow guide hole 331 is arranged in an inclined linear manner, which is convenient for cooperating with the runner 22 and guiding injection fluid to the injection molding assembly 3.

[0042] Further, as a preferred embodiment of the present application, the flow guide hole 331 is a linear hole, the flow channel 22 comprises a main flow channel 221, one side of the main flow channel 221 is connected with the feeding port 21, and the other side is provided with a plurality of sub-flow channels 222 corresponding to the flow guide hole 331 for guiding the injection fluid to the injection cavity. The nozzle at the end of the sub-flow channel 222 is close to the inner ring of the arc-shaped injection product, and when the arc-shaped injection product is removed after the injection is completed, the dispensing point is located on the inner side, which can ensure the beauty of the arc-shaped injection product.

[0043] In the process of injection molding the arc-shaped injection product, the injection fluid enters from the feeding port 21, is transmitted to the sub-flow channel 222 in the main flow channel 221, the sub-flow channel 222 corresponds to the mold core 33, the left mold core 31 and the right mold core 32 cooperate with the mold core 33 to form an injection cavity for injection molding an arc-shaped core, and the injection fluid is injected from the sub-flow channel 222 to the injection cavity through the mold core 33. When the injection work is completed, the nozzle at the end of the sub-flow channel 222 is located in the inner ring of the arc-shaped injection product, and when the arc-shaped injection product is removed, the dispensing point is located on the inner side, which can ensure the beauty of the arc-shaped injection product.

[0044] In the present embodiment, the first arc-shaped groove 311 is arranged on the left mold core 31, and the second arc-shaped groove 321 corresponding to the first arc-shaped groove 311 is arranged on the right mold core 32, and the first arc-shaped groove 311 and the second arc-shaped groove 321 can form an injection cavity for injection molding an arc-shaped core when cooperating with the mold core 33.

[0045] Further, the specific shape of the first arc-shaped groove 311 and the second arc-shaped groove 321 corresponds to the shape of the product actually needed to be injection molded, and the left mold core 31 and the right mold core 32 can be replaced to realize injection molding of different injection products.

[0046] Optionally, the first arc-shaped groove 311 and the second arc-shaped groove 321 can be arranged according to the shape of the injection product, and arc-shaped grooves can also be arranged on the left mold core 31 and / or the right mold core 32 according to the shape of the injection product.

[0047] In the present embodiment, the upper mold assembly 2 comprises an upper fixed plate 23 and a second plate 24 adjacent to the upper fixed plate 23, the second plate 24 is provided with a female mold plate 25 away from the upper fixed plate 23, and the feeding port 21 is arranged on the upper fixed plate 23. The female mold plate 25, when performing injection work, cooperates with the lower mold assembly 1 to fix the injection assembly 3, so as to facilitate subsequent addition of injection fluid to the injection assembly 3 to complete injection.

[0048] Further, the flow channel 22 is connected with the feeding port 21, and the female mold plate 25 is provided with a mounting plate 251 for mounting the flow channel 22.

[0049] Further, the female mold plate 25 is provided with a plurality of first holes 252 arranged obliquely, the left mold core 31 and the right mold core 32 are provided with a plurality of second holes 34 corresponding to the first holes 252, and the upper mold assembly 2 is provided with a plurality of corresponding columns 26 corresponding to the first holes 252 and the second holes 34, as a preferred embodiment of the present application, the corresponding columns 26 are arranged on the side of the mounting plate 251 close to the female mold plate 25, and are used for cooperating and fixing the injection molding assembly 3. The angle of the first holes 252 and the second holes 34 is set according to actual needs, and the injection molding assembly 3 is better fixed and locked in cooperation with the corresponding columns 26.

[0050] Further, as a preferred embodiment of the present application, the number of the second holes 34 is related to actual needs, the second holes 34 are arranged on the left mold core 31 and the right mold core 32 respectively, and are symmetrical about a straight line formed by the mold cores 33 in the same injection molding assembly 3.

[0051] In the embodiment, the lower mold assembly 1 comprises a lower fixed plate 11 and a male mold plate 12 for bearing the injection molding assembly 3, and the injection molding assembly 3 is arranged on the male mold plate 12.

[0052] Further, the male mold plate 12 is provided with a limiting piece 121 for fastening the injection molding assembly 3, the limiting piece 121 is provided with a third hole 1211 for cooperating and separating the left mold core 31 and the right mold core 32, the third hole 1211 is a straight slot hole, and the length of the third hole 1211 is set according to actual needs.

[0053] Further, the left mold core 31 is provided with a first connecting rod 312 capable of driving the left mold core 31 to move in the third hole 1211, the right mold core 32 is provided with a second connecting rod 322 capable of driving the right mold core 32 to move in the third hole 1211, and the first connecting rod 312 and the second connecting rod 322 can drive the left mold core 31 and the right mold core 32 to move respectively, so that the injection molding product can be conveniently taken out.

[0054] The working principle of the embodiment is as follows:

[0055] The injection molding mold with a detachable arc-shaped mold core provided by the utility model can conveniently take out the formed arc-shaped injection molding product through the detachable left mold core 31 and right mold core 32, and the specific principle is as follows:

[0056] In the process of injection molding the arc-shaped injection molded product, the injection fluid enters from the feeding port 21, enters the main runner 221 to transmit the injection fluid to the branch runner 222, the branch runner 222 corresponds to the mold core 33 one by one, the left mold pin 31 and the right mold pin 32 cooperate with the mold core 33 to form an injection cavity for injection molding the arc-shaped core, and the injection fluid is injected from the branch runner 222 to the injection cavity through the mold core 33.

[0057] When the injection molding work is completed, the lower mold assembly 1 is separated from the upper mold assembly 2, and the corresponding column 26 is driven to separate the left mold pin 31 and the right mold pin 32 of the injection assembly 3 to unlock, at this time, the left mold pin 31 and the right mold pin 32 can be separated from the mold core 33 through the first connecting rod 312 and the second connecting rod 322, the arc-shaped injection molded product can be taken down conveniently, the nozzle at the end of the branch runner 222 is located in the inner ring part of the arc-shaped injection molded product, the dispensing position is located on the inner side when the arc-shaped injection molded product is taken down, and the appearance of the arc-shaped injection molded product can be ensured.

Claims

1. An injection mold having a removable arc core, characterized by, The utility model provides a kind of injection molding machine, including lower mould component (1) and the upper mould component (2) injection moulded with lower mould component (1), multiple injection molding components (3) for completing injection molding are equipped between lower mould component (1) and upper mould component (2), the upper mould component (2) includes the feed inlet (21) for feeding injection molding fluid and the flow channel (22) for guiding injection molding fluid to the injection molding component (3) with the feed inlet (21) communication, the injection molding component (3) includes the left mould core (31) for forming injection molding cavity and the right mould core (32) matched with left mould core (31), multiple mould core (33) for matching forming arc core and guiding injection molding fluid with the flow channel (22) are equipped between left mould core (31) and right mould core (32).

2. An injection mold with removable arc core according to claim 1, characterized in that, First arc groove (311) is equipped on the left mould core (31), and second arc groove (321) corresponding to first arc groove (311) is equipped on the right mould core (32), and first arc groove (311), second arc groove (321) can form injection molding cavity for injection molding arc core piece when matched with mould core (33).

3. An injection mold with removable arc core according to claim 2, characterized in that, The specific shape of first arc groove (311) and second arc groove (321) corresponds to the shape of the product actually needed to be injection molded, and the left mould core (31) and the right mould core (32) can be replaced to realize the injection molding of different injection products.

4. An injection mold with removable arc core according to claim 1, characterized in that, Mould core (33) is equipped with flow guide hole (331) for guiding injection molding fluid matched with flow channel (22), one end of flow guide hole (331) is equipped on the top surface of mould core (33), and the other end is equipped on the side of mould core (33) close to injection molding cavity.

5. An injection mold with removable arc core according to claim 4, characterized in that, Flow guide hole (331) is linear hole, and flow channel (22) includes main flow channel (221), one side of main flow channel (221) is connected with feed inlet (21), and the other side is equipped with multiple shunt channels (222) corresponding to flow guide hole (331) for guiding injection molding fluid to injection molding cavity.

6. An injection mold with removable arc core according to claim 1, characterized in that, The upper mould component (2) includes upper fixed plate (23) and second plate (24) adjacent to upper fixed plate (23), and the side, away from upper fixed plate (23), of second plate (24) is equipped with female mold plate (25), and feed inlet (21) is equipped on upper fixed plate (23).

7. An injection mold with removable arc core according to claim 6, characterized in that, Flow channel (22) is connected with feed inlet (21), and female mold plate (25) is equipped with mounting plate (251) for mounting flow channel (22), and female mold plate (25) is equipped with multiple first holes (252) arranged obliquely, and left mould core (31) and right mould core (32) are obliquely equipped with multiple second holes (34) corresponding to first holes (252), and upper mould component (2) is equipped with multiple corresponding columns (26) corresponding to first holes (252) and second holes (34), corresponding columns (26) are equipped on the side of mounting plate (251) close to female mold plate (25), for matching and fixing injection molding component (3).

8. An injection mold with removable arc core according to claim 7, characterized in that The second holes (34) are respectively arranged on the left and right mold stems (31, 32) and are symmetric about a straight line formed by the mold core (33) in the same injection assembly (3).

9. An injection mold with removable arc core according to claim 1, wherein, The lower mold assembly (1) comprises a lower fixed plate (11) and a male mold plate (12) for bearing the injection assembly (3), and the injection assembly (3) is arranged on the male mold plate (12).

10. An injection mold with removable arc core according to claim 9, characterized in that, The male mold plate (12) is provided with a limiting piece (121) for fastening the injection assembly (3), the limiting piece (121) is provided with a third hole (1211) for cooperating with the separation of the left and right mold stems (31, 32), the left mold stem (31) is provided with a first connecting rod (312) capable of driving the left mold stem (31) to move in the third hole (1211), and the right mold stem (32) is provided with a second connecting rod (322) capable of driving the right mold stem (32) to move in the third hole (1211).

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