Multifunctional injection mold

Abstract

The utility model relates to the technical field of molds, in particular to a multifunctional injection mold, which is characterized in that when plastic products with different shapes are subjected to injection molding, a replacement mold part with a corresponding shape needs to be replaced, a screw of a movable mold part needs to be unscrewed, the movable mold part is moved away from a fixed mold part, a screw of a movable mold plate is unscrewed, an upper mold plate is taken down, and an upper mold plate with a proper shape is replaced. The lower die plate is fixed on the movable die plate through a screw to complete replacement of the upper die plate, then the screw of the lower die plate is unscrewed, the lower die plate is taken down from the fixed die plate, the screw of the extrusion block is unscrewed, the spring rebounds, the extrusion block is pushed away from the lower die plate, the extrusion block is conveniently taken out, protection of the extrusion block is lost, and the lower die plate is completely exposed outside and can be directly taken down from the lower die plate. When the multifunctional injection mold is used for processing plastic products with different shapes, only the mold part needs to be replaced, and the whole set of injection mold does not need to be replaced, so that the stock of the injection mold in a factory is reduced, the earlier-stage capital investment is reduced, and the cost control is facilitated.

Description

Technical Field

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

[0002] Injection molds are tools that are used in the plastic processing industry to match plastic molding machines and give plastic products a complete configuration and precise size. Due to the wide variety of plastics and processing methods, the structures of plastic molding machines and plastic products vary in complexity, and the types and structures of plastic molds are also diverse. The processing equipment corresponding to plastic injection molds is plastic injection molding machines. The plastic is first heated and melted in the heating barrel at the bottom of the injection machine, and then pushed by the screw or plunger of the injection machine, it enters the mold cavity through the injection machine nozzle and the pouring system of the mold. The plastic is cooled and hardened, and the product is demolded. Its structure is usually composed of molding parts, pouring systems, guide parts, ejection mechanisms, temperature control systems, exhaust systems, support parts, etc. The manufacturing material usually uses plastic mold steel modules, and the commonly used materials are mainly carbon structural steel, carbon tool steel, alloy tool steel, high-speed steel, etc. The injection molding processing method is usually only suitable for the production of thermoplastic products. Plastic products produced by injection molding technology are very extensive, from daily necessities to various complex machinery, electrical appliances, and transportation parts are all molded by injection molds. It is the most widely used processing method in the production of plastic products.

[0003] Due to the various shapes of plastic products, different injection molds are required when processing plastic products of different shapes. The factory needs to store a large number of injection molds, which increases the initial capital investment and is not conducive to cost control. Utility Model Content

[0004] The main purpose of the utility model is to provide a multifunctional injection mold to solve the problem proposed in the related art that different injection molds are needed when processing plastic products of different shapes, the factory needs to store a large number of injection molds, which increases the initial capital investment and is not conducive to cost control.

[0005] In order to achieve the above object, according to one aspect of the utility model, a multifunctional injection mold is provided, comprising: a replacement mold part, the replacement mold part comprising an upper mold part and a lower mold part, the upper mold part and the lower mold part respectively providing half of the model, the upper mold part and the lower mold part forming a complete model when combined, and replacing the replacement mold part of different shapes to cast plastic products of corresponding shapes;

[0006] A fixed mold part, the fixed mold part includes a fixed mold plate, the replacement mold part is arranged above the fixed mold plate, and the fixed mold part provides support for the mold;

[0007] A movable mold part, wherein the movable mold part includes a movable mold plate, the replacement mold part is arranged below the movable mold plate, and the movable mold plate and the fixed mold plate sandwich the replacement mold part;

[0008] The injection channel is provided inside the moving mold part and communicates with the outside, providing a channel for injecting plastic into the mold.

[0009] Further, the moving mold part further includes a pressing top which is arranged above the moving template and is connected to the moving template by screws.

[0010] Further, the fixed mold part further includes a bottom plate, a counterweight block and two support blocks. The two support blocks are respectively and relatively fixed above both sides of the bottom plate, and the fixed template is arranged above the support blocks by screws.

[0011] Further, the counterweight block is fixedly arranged above the middle of the bottom plate and is located between the two support blocks, increasing the self-weight of the fixed mold part and lowering its center of gravity.

[0012] Further, the injection channel includes an injection port, a main runner, a cold slug well, a gate and a discharge port. The injection port is arranged above the pressing top and penetrates the moving mold part, and the nozzle of the injection molding machine can inject molten plastic into the injection channel through the injection port.

[0013] Further, the main runner is arranged below the injection port to receive the molten plastic flowing down from the injection port. The gate is arranged below the main runner to pour the molten plastic in the main runner into the replacement mold part.

[0014] Further, the cold slug well is arranged below the main runner to store the condensed plastic generated during the interval between two injections. The discharge port is arranged below the cold slug well, and the discharge port penetrates the fixed mold part to discharge the condensed plastic in the cold slug well to the outside of the fixed mold part.

[0015] Further, the replacement mold part further includes a lower module, an extrusion block and a plurality of springs. The lower module is arranged above the fixed template by screws, and the lower template is arranged above the lower module by screws.

[0016] Further, one end of each spring is fixedly arranged on the side surface of the lower module, and the other end is freely telescopic.

[0017] Further, the extrusion block is arranged on the side surface of the lower module by screws and is on the same side as the spring. A slot hole is provided at the corresponding position of the extrusion block and the spring, and the spring can freely expand and contract in the slot hole.

[0018] Compared with the prior art, the utility model has the following beneficial effects: When injecting plastic products of different shapes, it is necessary to replace the replacement die part with the corresponding shape. Unscrew the screws of the moving die part, move the moving die part away from the fixed die part, then unscrew the screws of the moving template, remove the upper template, replace it with an upper template of the appropriate shape, and fix it on the moving template with screws to complete the replacement of the upper template. Then unscrew the screws of the lower module, remove it from the fixed template, unscrew the screws of the extrusion block, the spring rebounds, and pushes the extrusion block away from the lower module, facilitating the removal of the extrusion block. Without the protection of the extrusion block, the lower template is completely exposed and can be directly removed from the lower module. Replace it with a lower template of the appropriate shape and install it on the lower module. When processing plastic products of different shapes, this multifunctional injection mold only needs to replace the replacement die part, without replacing the entire injection mold, reducing the inventory of injection molds in the factory, reducing the upfront capital investment, and being beneficial to cost control. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the whole of the utility model;

[0020] Figure 2 is a schematic structural diagram of the utility model;

[0021] Figure 3 is a schematic structural diagram of the injection channel of the utility model;

[0022] Figure 4 is a schematic structural diagram of the replacement die part of the utility model.

[0023] Illustration:

[0024] 1. Moving die part; 11. Pressing top; 12. Moving template;

[0025] 2. Fixed die part; 21. Bottom plate; 22. Counterweight; 23. Support block; 24. Fixed template;

[0026] 3. Injection channel; 31. Injection port; 32. Main runner; 33. Cold slug well; 34. Gate; 35. Discharge port;

[0027] 4. Replacement die part; 41. Upper template; 42. Lower template; 43. Lower module; 44. Extrusion block; 45. Spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To further elaborate on the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific embodiments, structures, features, and their effects of the utility model as follows.

[0029] Please refer to Figures 1 to 4, this embodiment provides a multi-functional injection mold, including: a replaceable mold part 4, the replaceable mold part 4 includes an upper template 41 and a lower template 42. The upper template 41 and the lower template 42 respectively provide half of the model. When the upper template 41 and the lower template 42 are combined, a complete model is formed. By replacing the replaceable mold part 4 with different shapes, plastic products with corresponding shapes can be cast.

[0030] A fixed mold part 2, the fixed mold part 2 includes a fixed template 24. The replaceable mold part 4 is arranged above the fixed template 24, and the fixed mold part 2 provides support for the mold.

[0031] A moving mold part 1, the moving mold part 1 includes a moving template 12. The replaceable mold part 4 is arranged below the moving template 12, and the moving template 12 and the fixed template 24 sandwich the replaceable mold part 4 in the middle.

[0032] An injection channel 3, the injection channel 3 is arranged inside the moving mold part 1 and communicates with the outside, providing a channel for injecting plastic into the mold.

[0033] The moving mold part 1 further includes a pressing top 11. The pressing top 11 is arranged above the moving template 12 and is connected to the moving template 12 by screws to protect the moving template 12 from being damaged by the outside.

[0034] The fixed mold part 2 further includes a bottom plate 21, a counterweight 22 and two support blocks 23. The two support blocks 23 are respectively and relatively fixed above both sides of the bottom plate 21. The fixed template 24 is arranged above the support blocks 23 by screws. The middle part below the fixed template 24 is suspended, with fast heat dissipation and shortened cooling time for plastic products.

[0035] The counterweight 22 is fixed above the middle of the bottom plate 21 and is located between the two support blocks 23, increasing the self-weight of the fixed mold part 2 and lowering its center of gravity, improving the stability of the fixed mold part 2 and preventing shaking during the casting process, which affects the quality of the finished product.

[0036] The injection channel 3 includes an injection port 31, a main runner 32, a cold slug well 33, a gate 34 and a discharge port 35. The injection port 31 is arranged above the pressing top 11 and penetrates the moving mold part 1. The nozzle of the injection molding machine can inject molten plastic into the injection channel 3 through the injection port 31.

[0037] The main runner 32 is arranged below the injection port 31 to receive the molten plastic flowing down from the injection port 31. The gate 34 is arranged below the main runner 32 to pour the molten plastic in the main runner 32 into the replaceable mold part 4. The molten plastic is pressure-molded in the replaceable mold part 4 and the finished product can be taken out after cooling.

[0038] The cold material inlet 33 is provided below the main runner 32 to store the condensed plastic generated during the interval between two injections, preventing the condensed plastic from blocking the main runner 32 and unable to complete the plastic pouring. The discharge port 35 is provided below the cold material inlet 33. The discharge port 35 penetrates the fixed mold part 2 to discharge the condensed plastic in the cold material inlet 33 to the outside of the fixed mold part 2, ensuring the ability of the cold material inlet 33 to store the condensed plastic.

[0039] The mold replacement part 4 further includes a lower module 43, an extrusion block 44 and a plurality of springs 45. In this embodiment, preferably two are provided to provide sufficient elastic force for the extrusion block 44. The lower module 43 is provided above the fixed template 24 by screws, and the lower template 42 is provided above the lower module 43 by screws.

[0040] One end of each spring 45 is fixedly provided on the side surface of the lower module 43, and the other end is freely telescopic. When the spring 45 rebounds, the extrusion block 44 is pushed away from the lower module 43, facilitating the removal of the extrusion block 44.

[0041] The extrusion block 44 is provided on the side surface of the lower module 43 by screws and is on the same side as the spring 45. A slot hole is provided at the corresponding part of the extrusion block 44 and the spring 45, and the spring 45 can freely expand and contract in the slot hole.

[0042] Insert the nozzle of the injection molding machine into the injection port 31, extrude the molten plastic into the injection channel 3. The molten plastic is pressed into the main runner 32 and enters the gap between the moving template 12 and the fixed template 24 through the gate 34. After the gap is filled, turn off the injection molding machine and stop injecting the molten plastic into the mold. After holding pressure and cooling for a period of time, the plastic in the mold solidifies and forms. Unscrew the screws of the moving die part 1, move the moving die part 1 away from the fixed die part 2, take out the mold on the fixed die part 2, then install the moving die part 1 back on the fixed die part 2 and screw on the screws to fix it, and the next round of injection molding can be carried out; when injecting plastic products of different shapes, it is necessary to replace the replacement die part 4 with the corresponding shape. Unscrew the screws of the moving die part 1, move the moving die part 1 away from the fixed die part 2, then unscrew the screws of the moving template 12, remove the upper template 41, replace it with the upper template 41 of the appropriate shape, and fix it on the moving template 12 with screws to complete the replacement of the upper template 41. Then unscrew the screws of the lower module 43, remove it from the fixed template 24, unscrew the screws of the extrusion block 44, the spring 45 rebounds, and pushes the extrusion block 44 away from the lower module 43, facilitating the removal of the extrusion block 44. Without the protection of the extrusion block 44, the lower template 42 is completely exposed and can be directly removed from the lower module 43. Replace it with the lower template 42 of the appropriate shape, install it on the lower module 43, then fix the extrusion block 44 on the side of the lower module 43 with screws, and tightly squeeze and fix the bent part of the lower template 42 between the lower module 43 and the extrusion block 44 to prevent the lower template 42 from shaking and affecting the quality of the cast product. After completing the replacement of the lower template 42, plastic products with the shape corresponding to the replacement die part 4 can be cast. When processing plastic products of different shapes, this multifunctional injection mold only needs to replace the replacement die part 4, without replacing the whole set of injection molds, reducing the inventory of injection molds in the factory, lowering the upfront capital investment, and being conducive to cost control.

[0043] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to make equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. Multifunctional injection mold, characterized in that, include: A replaceable mold part (4), the replaceable mold part (4) comprising an upper mold part (41) and a lower mold part (42), the upper mold part (41) and the lower mold part (42) respectively providing half of a model, the upper mold part (41) and the lower mold part (42) forming a complete model when combined, and replacing the replaceable mold part (4) with a different shape to cast a plastic product of a corresponding shape; A fixed mold part (2), the fixed mold part (2) comprising a fixed mold plate (24), the replacement mold part (4) being arranged above the fixed mold plate (24), and the fixed mold part (2) providing support for the mold; A movable mold part (1), the movable mold part (1) comprising a movable mold plate (12), the replacement mold part (4) being arranged below the movable mold plate (12), the movable mold plate (12) and the fixed mold plate (24) sandwiching the replacement mold part (4); An injection channel (3) is arranged inside the movable mold part (1) and is connected to the outside to provide a channel for injecting plastic into the mold.

2. The multifunctional injection mold according to claim 1, characterized in that: The movable mold part (1) also includes a pressure top (11), wherein the pressure top (11) is arranged above the movable mold plate (12) and is connected to the movable mold plate (12) by means of screws.

3. The multifunctional injection mold according to claim 2, characterized in that: The fixed mold part (2) further comprises a bottom plate (21), a counterweight block (22) and two support blocks (23); the two support blocks (23) are respectively relatively fixedly arranged above two sides of the bottom plate (21); and the fixed mold plate (24) is arranged above the support blocks (23) by means of screws.

4. The multifunctional injection mold according to claim 3, characterized in that: The counterweight block (22) is fixedly arranged in the middle of the upper part of the bottom plate (21) and is located between the two support blocks (23), thereby increasing the deadweight of the fixed mold part (2) and lowering its center of gravity.

5. The multifunctional injection mold according to claim 1, characterized in that: The injection channel (3) comprises an injection port (31), a main channel (32), a cold material port (33), a gate (34) and a discharge port (35); the injection port (31) is arranged above the pressure top (11) and passes through the movable mold part (1); and the nozzle of the injection molding machine can inject molten plastic into the injection channel (3) through the injection port (31).

6. The multifunctional injection mold according to claim 5, characterized in that: The main flow channel (32) is arranged below the injection port (31) to receive the molten plastic flowing down from the injection port (31); the gate (34) is arranged below the main flow channel (32) to pour the molten plastic in the main flow channel (32) into the replacement mold part (4).

7. The multifunctional injection mold according to claim 5, characterized in that: The cold material port (33) is arranged below the main channel (32) to store the condensed plastic produced in the gap between two injection moldings. The discharge port (35) is arranged below the cold material port (33). The discharge port (35) penetrates the fixed mold part (2) to discharge the condensed plastic in the cold material port (33) to the outside of the fixed mold part (2).

8. The multifunctional injection mold according to claim 1, characterized in that: The replacement mold part (4) further comprises a lower mold block (43), an extrusion block (44) and a plurality of springs (45); the lower mold block (43) is arranged above the fixed mold block (24) by means of screws; and the lower mold block (42) is arranged above the lower mold block (43) by means of screws.

9. The multifunctional injection mold according to claim 8, characterized in that: One end of the spring (45) is fixedly arranged on the side of the lower module (43), and the other end is freely retractable.

10. The multifunctional injection mold according to claim 8, characterized in that: The extrusion block (44) is arranged on the side of the lower module (43) by means of screws and is located on the same side as the spring (45). Slot holes are arranged at corresponding positions of the extrusion block (44) and the spring (45), and the spring (45) can freely expand and contract in the slot holes.

Images