Sectional type injection mold for large complex plastic product

Abstract

The utility model relates to the technical field of injection molds, and discloses a large complex plastic product sectional type injection mold which comprises a base, a lower mold is fixedly connected to the middle of the upper end of the base, a water tank is arranged at the lower end in the lower mold, and a refrigerator is arranged on the end face of one side of the water tank. A heat absorbing plate is arranged on the outer side of the upper end in the lower die, and heat pipes are evenly arranged at the lower end in the heat absorbing plate at intervals. When the mold is used, the arranged servo motor drives the spiral blades at the four corners to rotate, plastic can be uniformly conveyed into the injection molding cavity, full filling is ensured, bubbles or cavities are avoided, the quality and appearance of products are improved, meanwhile, the filling speed in the injection molding process can be increased, and the production efficiency is improved. The production efficiency is improved, the period is shortened, the yield is increased, stress and deformation in the plastic filling process are reduced, process defects are reduced, and the product quality stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a segmented injection mold for large and complex plastic products. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging molding, smelting, stamping and other methods. In short, molds are tools used to shape objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material. It is a tool that makes the blank become a part with a specific shape and size under the action of external force. It is widely used in blanking, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, and compression molding or injection molding of engineering plastics, rubber, ceramics and other products.

[0003] At present, most of the segmented injection molds for large and complex plastic products have a common problem, that is, the amount of plastic to be injected is too large, resulting in a long pouring time. Due to the different cooling degrees of the injected plastic at different time points, stress concentration occurs, affecting the stability of product quality.

[0004] Therefore, those skilled in the art provide a segmented injection mold for large and complex plastic products to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose a segmented injection mold for large and complex plastic products. When the mold is in use, the spiral blades at the four corners are driven to rotate by the servo motor, so as to evenly convey the plastic into the injection cavity, ensure sufficient filling, avoid bubbles or voids, and improve the quality and appearance of the product. At the same time, it can speed up the filling speed of the injection molding process, improve production efficiency, shorten the cycle, increase output, reduce stress and deformation in the plastic filling process, reduce process defects, and improve product quality stability.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A segmented injection mold for a large and complex plastic product, comprising a base, a lower mold fixedly connected to the middle of the upper end of the base, a water tank disposed at the lower end of the lower mold, a refrigerator disposed on one end surface of the water tank, a heat absorbing plate disposed on the outer side of the upper end of the lower mold, heat pipes disposed at even intervals at the lower end of the heat absorbing plate, the lower ends of the plurality of heat pipes all pass through the water tank and heat conducting plates disposed at even intervals on the outside;

[0008] An upper mold is provided at the upper end of the lower mold, a servo motor is provided at the inner middle part of the upper mold, a first driving sprocket is sleeved on the outer side of the output end of the servo motor, a first chain is sleeved on the outer side of the first driving sprocket, first driven sprockets are sleeved on both sides of the inner side of the first chain, a transmission shaft is sleeved on the inner sides of the two first driven sprockets, a second driving sprocket is sleeved on the outer sides of the two transmission shafts, a second chain is sleeved on the outer sides of the two second driving sprockets, second driven sprockets are sleeved on both sides of the inner sides of the two second chains, and spiral blades are sleeved on the inner sides of the plurality of second driven sprockets;

[0009] Through the above technical solution, when the mold is in use, the spiral blades at the four corners are driven by the servo motor to rotate, so that the plastic can be evenly transported into the injection cavity, ensuring sufficient filling, avoiding bubbles or voids, and improving the quality and appearance of the product. At the same time, it can speed up the filling speed of the injection molding process, improve production efficiency, shorten the cycle, increase output, and reduce stress and deformation in the plastic filling process, reduce process defects, and improve product quality stability.

[0010] Furthermore, both ends of the plurality of spiral blades are rotatably connected to the upper mold;

[0011] Through the above technical solution, the rotating connection helps to keep the spiral blade stable during operation and reduce the risk of failure due to vibration or unstable movement.

[0012] Furthermore, a storage cavity is provided at the inner upper end of the upper mold;

[0013] Through the above technical solution, the storage cavity can temporarily store unprocessed plastic materials, and then introduce them into the injection cavity for processing when needed, avoiding material waste due to interruption.

[0014] Furthermore, the four corners of the upper end of the lower die are fixedly connected to limit rods, and the four corners of the upper die are provided with limit slots, and the plurality of limit slots are slidably connected to the limit rods;

[0015] Through the above technical solution, through the design of the limit rod and the limit groove, the precise positioning between the upper mold and the lower mold can be ensured to avoid offset or misalignment when the mold is closed, thereby ensuring the accuracy and quality of product molding.

[0016] Furthermore, an injection port is provided in the middle of the upper end of the upper mold;

[0017] Through the above technical solution, the setting of the injection port can ensure that the plastic material accurately enters the mold during the injection molding process, making the product molding more precise and controllable.

[0018] Furthermore, an injection cavity is provided in the middle of the upper end of the lower mold;

[0019] Through the above technical solution, the setting of the injection cavity allows the plastic material to smoothly enter the mold, fill the mold cavity, complete the product molding process, and improve production efficiency.

[0020] Furthermore, a controller is disposed on one side of the interior of the base, a battery is disposed in the middle of the interior of the base, and the battery and the controller, the servo motor, and the refrigerator are all electrically connected;

[0021] Through the above technical solution, by electrically connecting components such as the controller, battery, servo motor and refrigerator, integrated control can be achieved, so that these components can cooperate more closely and improve the overall performance of the system.

[0022] Furthermore, mounting holes are provided at the four corners of the base;

[0023] Through the above technical solution, the mounting holes can be used to fix the base, ensuring that the base is firmly installed in the desired position to prevent movement or shaking.

[0024] The utility model has the following beneficial effects:

[0025] 1. The utility model proposes a segmented injection mold for large and complex plastic products. Compared with the existing injection mold, when the injection mold is in use, the spiral blades at the four corners are driven to rotate by the servo motor, so that the plastic can be evenly transported into the injection cavity, ensuring sufficient filling, avoiding bubbles or voids, and improving the quality and appearance of the product. At the same time, it can speed up the filling speed of the injection molding process, improve production efficiency, shorten the cycle, increase output, reduce stress and deformation in the plastic filling process, reduce process defects, and improve product quality stability.

[0026] 2. The utility model proposes a segmented injection mold for large and complex plastic products. Compared with the existing injection molds, when the injection mold is in use, a heat-absorbing plate is provided to absorb the heat of the plastic product, and the heat is transferred to the liquid inside the water tank by a heat pipe, and the liquid is cooled by a refrigerator to achieve rapid cyclic cooling, so that the heat can be quickly absorbed and the cooling process of the molding material can be accelerated, thereby shortening the injection molding cycle and improving production efficiency. At the same time, it can also reduce the thermal stress of the molding material, reduce internal stress, reduce the risk of product deformation, and improve the dimensional stability of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an axonometric view of a segmented injection mold for a large and complex plastic product proposed by the utility model;

[0028] Figure 2This is an exploded view of a segmented injection mold for a large and complex plastic product proposed by the utility model;

[0029] Figure 3 This is a front cross-sectional view of a segmented injection mold for a large and complex plastic product proposed by the utility model;

[0030] Figure 4 A side cross-sectional view of a segmented injection mold for a large and complex plastic product proposed by the utility model;

[0031] Figure 5 The utility model proposes a large-scale complex plastic product segmented injection mold Figure 3 Enlarged view of point A in the middle.

[0032] Legend:

[0033] 1. Base; 2. Mounting hole; 3. Lower mold; 4. Upper mold; 5. Limit rod; 6. Limit groove; 7. Injection cavity; 8. Injection port; 9. Battery; 10. Controller; 11. Heat absorbing plate; 12. Heat pipe; 13. Heat conducting plate; 14. Water tank; 15. Refrigerator; 16. Storage cavity; 17. Servo motor; 18. First driving sprocket; 19. First chain; 20. First driven sprocket; 21. Transmission shaft; 22. Second driving sprocket; 23. Second chain; 24. Second driven sprocket; 25. Spiral blade. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the specific implementation of the utility model to clearly and completely describe the technical solutions in the specific implementation of the utility model. Obviously, the specific implementation described is only a part of the specific implementation of the utility model, not all of the specific implementation. Based on the specific implementation of the utility model, all other specific implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Reference Figure 1-5 The utility model provides a specific embodiment: a large-scale complex plastic product segmented injection mold, including a base 1, a lower mold 3 is fixedly connected to the middle of the upper end of the base 1, a water tank 14 is arranged at the lower end of the lower mold 3, a refrigerator 15 is arranged on one side of the water tank 14, a heat absorbing plate 11 is arranged on the outer side of the upper end of the lower mold 3, heat pipes 12 are evenly arranged at the lower end of the heat absorbing plate 11, and the lower ends of multiple heat pipes 12 all penetrate the water tank 14 and are evenly arranged on the outside with heat conducting plates 13;

[0036] The upper end of the lower mold 3 is provided with an upper mold 4, and a servo motor 17 is provided in the middle of the inner part of the upper mold 4. The output end of the servo motor 17 is sleeved with a first driving sprocket 18 on the outside, and a first chain 19 is sleeved on the outside of the first driving sprocket 18. The first chain 19 is sleeved with first driven sprockets 20 on both sides of the inside. The two first driven sprockets 20 are sleeved with transmission shafts 21 on the inside, and the outer upper ends of the two transmission shafts 21 are sleeved with second driving sprockets 22. The outer ends of the two second driving sprockets 22 are sleeved with second chains 23. The inner sides of the two second chains 23 are sleeved with first driven sprockets 20 on both sides. The sides are all sleeved with second driven sprockets 24, and the interiors of the multiple second driven sprockets 24 are all sleeved with spiral blades 25. When the mold is in use, the spiral blades 25 at the four corners are driven to rotate by the servo motor 17, so as to realize uniform conveying of plastic into the injection cavity 7, ensure sufficient filling, avoid bubbles or voids, improve product quality and appearance, and at the same time, speed up the filling speed of the injection molding process, improve production efficiency, shorten the cycle, increase output, reduce stress and deformation in the plastic filling process, reduce process defects, and improve product quality stability.

[0037] Both ends of the plurality of spiral blades 25 are rotatably connected to the upper mold 4. The rotatable connection helps to keep the spiral blades 25 stable during operation and reduce the risk of failure caused by vibration or unstable movement. A storage chamber 16 is provided at the internal upper end of the upper mold 4. The storage chamber 16 can temporarily store unprocessed plastic materials, and then introduce them into the injection cavity 7 for processing when needed to avoid material waste due to interruption. The four corners of the upper end of the lower mold 3 are fixedly connected to the limiting rod 5, and the four corners of the upper mold 4 are provided with limiting grooves 6. The plurality of limiting grooves 6 are slidably connected to the limiting rod 5. Through the design of the limiting rod 5 and the limiting groove 6, accurate positioning between the upper mold 4 and the lower mold 3 can be ensured to avoid offset or misalignment when the mold is closed, thereby ensuring the accuracy and quality of product molding. An injection port 8 is provided in the middle of the upper end of the upper mold 4. The setting of the injection port 8 can ensure To ensure that the plastic material accurately enters the mold during the injection molding process, so that the product molding is more accurate and controllable, an injection cavity 7 is opened in the middle of the upper end of the lower mold 3. The setting of the injection cavity 7 allows the plastic material to smoothly enter the mold, fill the mold cavity, complete the product molding process, and improve production efficiency. A controller 10 is arranged on one side of the interior of the base 1, and a battery 9 is arranged in the middle of the interior of the base 1. The battery 9 and the controller 10, the servo motor 17, and the refrigerator 15 are all electrically connected. By electrically connecting the controller 10, the battery 9, the servo motor 17 and the refrigerator 15 and other components, integrated control can be achieved, so that these components can be more coordinated and cooperated, and the overall performance of the system is improved. Mounting holes 2 are opened at the four corners of the base 1, and the mounting holes 2 can be used to fix the base 1 to ensure that the base 1 is firmly installed in the desired position to prevent movement or shaking.

[0038] Working principle: When the mold is in use, the plastic material is injected into the storage cavity 16 for storage through the provided injection port 8, and the spiral blades 25 at the four corners are driven to rotate by the provided servo motor 17 to achieve uniform transportation of the plastic into the injection cavity 7, ensuring full filling, avoiding bubbles or voids, and improving the quality and appearance of the product. After the injection molding is completed, the provided heat absorbing plate 11 is used to absorb the heat of the plastic product, which is transferred to the liquid inside the water tank 14 through the heat pipe 12, and then the liquid is cooled by the refrigerator 15 to achieve cyclic rapid refrigeration, which can quickly absorb heat, accelerate the cooling process of the molding material, shorten the injection molding cycle, improve production efficiency, reduce the thermal stress of the molding material, reduce internal stress, reduce the risk of product deformation, and improve the dimensional stability of the finished product.

[0039] Finally, it should be noted that the above is only a preferred specific implementation method of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned specific implementation methods, those skilled in the art can still modify the technical solutions recorded in the aforementioned specific implementation methods, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A segmented injection mold for a large complex plastic product, comprising a base (1), characterized in that: A lower mold (3) is fixedly connected to the middle of the upper end of the base (1), a water tank (14) is provided at the lower end of the lower mold (3), a refrigerator (15) is provided on one end surface of the water tank (14), a heat absorbing plate (11) is provided on the outer side of the upper end of the lower mold (3), heat pipes (12) are evenly spaced at the lower end of the heat absorbing plate (11), the lower ends of the plurality of heat pipes (12) all penetrate the water tank (14) and heat conducting plates (13) are evenly spaced outside; An upper mold (4) is arranged at the upper end of the lower mold (3), a servo motor (17) is arranged in the middle of the upper mold (4), a first driving sprocket (18) is sleeved on the outside of the output end of the servo motor (17), a first chain (19) is sleeved on the outside of the first driving sprocket (18), first driven sprockets (20) are sleeved on both sides of the inside of the first chain (19), a transmission shaft (21) is sleeved on the inside of the two first driven sprockets (20), a second driving sprocket (22) is sleeved on the outer upper ends of the two transmission shafts (21), a second chain (23) is sleeved on the outside of the two second driving sprockets (22), second driven sprockets (24) are sleeved on both sides of the inside of the two second chains (23), and spiral blades (25) are sleeved on the inside of the plurality of second driven sprockets (24).

2. A segmented injection mold for large and complex plastic products according to claim 1, characterized in that: Both ends of the plurality of spiral blades (25) are rotatably connected to the upper mold (4).

3. A segmented injection mold for large and complex plastic products according to claim 1, characterized in that: A storage cavity (16) is provided at the inner upper end of the upper mold (4).

4. A segmented injection mold for large and complex plastic products according to claim 1, characterized in that: The four corners of the upper end of the lower mold (3) are fixedly connected to limit rods (5), and the four corners of the upper mold (4) are provided with limit slots (6), and the plurality of limit slots (6) are slidably connected to the limit rods (5).

5. A segmented injection mold for large and complex plastic products according to claim 1, characterized in that: An injection port (8) is provided in the middle of the upper end of the upper mold (4).

6. A segmented injection mold for large and complex plastic products according to claim 1, characterized in that: An injection cavity (7) is provided in the middle of the upper end of the lower mold (3).

7. A segmented injection mold for large and complex plastic products according to claim 1, characterized in that: A controller (10) is arranged on one side of the interior of the base (1), a storage battery (9) is arranged in the middle of the interior of the base (1), and the storage battery (9), the controller (10), the servo motor (17), and the refrigerator (15) are all electrically connected.

8. A segmented injection mold for large and complex plastic products according to claim 1, characterized in that: The four corners of the base (1) are each provided with mounting holes (2).

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