Flip injection mold structure with notch and balanced glue feeding function

By designing a flip-top injection mold structure with a notch for balanced injection, the problems of uneven injection and uneven demolding were solved, achieving uniform injection and rapid demolding, thereby improving the product qualification rate and production efficiency.

CN224197232UActive Publication Date: 2026-05-05FUJIAN HENGLONG NEW MATERIALS TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FUJIAN HENGLONG NEW MATERIALS TECHNOLOGY CO LTD
Filing Date
2025-05-31
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Traditional injection molds suffer from filling defects due to injection imbalance during the injection process, as well as product deformation or surface damage during demolding, which affects the product qualification rate.

Method used

A flip-top injection mold structure with a notch and balanced injection is designed. By setting an injection mechanism and demolding components inside the mold, the injection material is ensured to be evenly distributed and cooled at the stress center of the product. A demolding method using a combination of ejector pins and springs is adopted to achieve fast and balanced demolding.

Benefits of technology

It achieves uniformity in the injection molding process and a high success rate for products, ensuring that products are not deformed or damaged during demolding, thereby improving product qualification rate and production efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a flip injection mold structure with a notch and balanced glue feeding, which belongs to the field of injection molds and comprises a mold frame, an injection mechanism for forming a product is arranged in the mold frame, and a demolding component convenient for discharging is arranged at the bottom of the injection mechanism. By means of the injection molding mechanism, uniform injection molding of a product is achieved, a molding material is injected into the sprue, the injection molding material flows through the main runner through the sprue and is cooled and molded between the upper mold core and the lower mold core, and due to the fact that the main runner is arranged at the stress center of the product, injection molding is uniform, and the yield success rate is high; and through the arranged demolding assembly, balanced demolding of the product is achieved, the arranged bottom plate and springs are pushed to contract, the six ejector pins which are evenly arranged are pushed out, and the effect of rapid demolding of the product is achieved.
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Description

Technical Field

[0001] This utility model relates to the field of injection molds, and more specifically, to a flip-top injection mold structure with a notch for balanced injection. Background Technology

[0002] Injection molds are widely used in the mass production of plastic products. They involve injecting molten plastic at high temperatures into a mold cavity, where it cools and solidifies to form parts with complex shapes. They are suitable for manufacturing products with high precision requirements, such as appliance casings, daily necessities, and automotive parts, and are characterized by high efficiency and repeatability. Molds typically consist of a moving mold and a fixed mold, working in conjunction with an ejection system to automate the demolding process. However, existing injection molds still have the following drawbacks:

[0003] Traditional injection molds suffer from filling defects due to injection imbalance during molding, leading to a decrease in product yield. Furthermore, uneven force during demolding can cause product deformation or surface damage. To address these issues, a flip-top injection mold structure with a notch for balanced injection is proposed. Utility Model Content

[0004] The purpose of this utility model is to address the problems of uneven injection during injection molding, which leads to filling defects and reduces the product qualification rate, as well as product deformation or surface damage due to uneven force during demolding.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0006] The present invention is as follows: a flip-top injection mold structure with a notch for balanced injection, including a mold frame, wherein an injection mechanism for forming the product is provided inside the mold frame, and a demolding component for easy unloading is provided at the bottom of the injection mechanism;

[0007] The injection molding mechanism includes a rear mold frame fixedly connected to the inner wall of the mold base, a front mold frame at the top of the rear mold frame, a lower mold core on the inner wall of the rear mold frame, an upper mold core at the top of the lower mold core, a sprue plate fixedly connected to the top of the front mold frame, a panel fixedly connected to the top of the sprue plate, a nozzle inside the panel, a main runner at the bottom of the nozzle, the main runner penetrating the interior of the sprue plate and the upper mold core, and a positioning ring fixedly connected to the top of the panel.

[0008] As a preferred technical solution of this utility model, the demolding assembly includes six ejector pins that are slidably connected to the interior of the lower mold core. A force-bearing plate is fixedly connected to the bottom of each ejector pin, and a base plate is fixedly connected to the bottom of each force-bearing plate. Guide rods are fixedly connected to the interior of the four base plates, and springs are provided on the outer walls of the four guide rods.

[0009] As a preferred technical solution of this utility model, both the upper mold core and the lower mold core are provided with water channels, and the output end of the water channels is provided with a force-saving connector.

[0010] As a preferred technical solution of this utility model, the outer wall of the mold frame is provided with a rod sleeve, and the rod sleeve is fixedly connected to the inside of the front mold frame and the rear mold frame.

[0011] As a preferred technical solution of this utility model, a placement groove is provided inside the rear mold frame, and a counter is provided inside the placement groove.

[0012] As a preferred technical solution of this utility model, a screw is fixedly connected to one side of both the front mold frame and the rear mold frame, and a safety locking plate is provided between the two screws.

[0013] As a preferred technical solution of this utility model, a dustproof plate is fixedly connected to one side of the mold frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. The injection molding mechanism enables uniform injection of the product. The molding material is injected into the nozzle and flows through the main channel. It is cooled and shaped between the upper and lower mold cores. Since the main channel is located at the center of the product's stress, the injection is uniform and the success rate of production is high.

[0016] 2. The set demolding components achieve balanced demolding of the product. Pushing the set base plate causes the spring to contract, pushing out the six evenly set ejector pins, so that the product can be demolded quickly. Attached Figure Description

[0017] Figure 1 A schematic diagram of a flip-top injection mold structure with a notch and balanced injection for this utility model;

[0018] Figure 2 A schematic diagram of the injection mechanism structure of a flip-top injection mold with a notch and balanced injection for this utility model;

[0019] Figure 3 A schematic diagram of the water channel and other structures of a flip-top injection mold structure with a notch and balanced glue injection, provided for this utility model;

[0020] Figure 4 A schematic diagram of the demolding component structure of a flip-top injection mold with a notch and balanced injection for this utility model;

[0021] Figure 5 This utility model provides a structural diagram of a counter and other components for a flip-top injection mold structure with a notch for balanced glue injection.

[0022] The diagram shows: 1. Mold frame; 2. Injection mechanism; 3. Demolding assembly; 201. Rear mold frame; 202. Front mold frame; 203. Lower mold core; 204. Upper mold core; 205. Sprue plate; 206. Panel; 207. Sprue; 208. Main runner; 209. Locating ring; 301. Ejector pin; 302. Force plate; 303. Base plate; 304. Guide rod; 305. Spring; 4. Water channel; 5. Force-saving connector; 6. Rod sleeve; 7. Placement slot; 8. Counter; 9. Screw; 10. Safety lock plate; 11. Dustproof plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0024] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0025] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] like Figure 1 As shown, this embodiment proposes a flip-top injection mold structure with notched balanced injection, including a mold frame 1, an injection mechanism 2 for forming the product is provided inside the mold frame 1, and a demolding component 3 for easy unloading is provided at the bottom of the injection mechanism 2.

[0028] like Figure 2As shown, the injection molding mechanism 2 includes a rear mold frame 201 fixedly connected to the inner wall of the mold base 1. A front mold frame 202 is provided on the top of the rear mold frame 201. A lower mold core 203 is provided on the inner wall of the rear mold frame 201. An upper mold core 204 is provided on the top of the lower mold core 203. The molding material is shaped by the upper mold core 204 and the lower mold core 203. A sprue plate 205 is fixedly connected to the top of the front mold frame 202. A panel 206 is fixedly connected to the top of the sprue plate 205. A nozzle 207 is provided inside the panel 206. A main channel 208 is provided at the bottom of the nozzle 207. The main channel 208 passes through the interior of the sprue plate 205 and the upper mold core 204. The injection material is injected through the nozzle 207 and enters the space between the upper mold core 204 and the lower mold core 203 through the main channel 208. A positioning ring 209 is fixedly connected to the top of the panel 206. The molding material is injected into the nozzle 207. The injection material flows through the nozzle 207 and through the main runner 208. It is cooled and shaped between the upper mold core 204 and the lower mold core 203. Since the main runner 208 is located at the center of the product's stress, the injection is uniform and the production success rate is high.

[0029] like Figure 4 As shown, the demolding assembly 3 includes six ejector pins 301 that are slidably connected to the interior of the lower mold core 203. The ejector pins 301 demold the shaped product. A force plate 302 is fixedly connected to the bottom of each ejector pin 301, and a base plate 303 is fixedly connected to the bottom of the force plate 302. The force plate 302 and the base plate 303 fix and limit the ejector pins 301 to prevent displacement. Guide rods 304 are fixedly connected inside the four base plates 303, and springs 305 are provided on the outer walls of each of the four guide rods 304. The guide rods 304 and the springs 305 cause the ejector pins 301 to move and demold. Pushing the base plates 303 causes the springs 305 to contract, pushing out the six evenly spaced ejector pins 301, which demold the shaped product, achieving a rapid demolding effect.

[0030] like Figure 3 As shown, both the upper mold core 204 and the lower mold core 203 are equipped with water channels 4, and the output end of the water channels 4 is equipped with a labor-saving connector 5. The water channels 4 can quickly cool and shape the product, while the labor-saving connector 5 can facilitate connection to an external water source.

[0031] like Figure 5 As shown, a sleeve 6 is provided on the outer wall of the mold frame 1, and the sleeve 6 is fixedly connected to the inside of the front mold frame 202 and the rear mold frame 201. The sleeve 6 can more firmly fix the front mold frame 202 and the rear mold frame 201 to the mold frame 1.

[0032] like Figure 5 As shown, a placement slot 7 is provided inside the rear mold frame 201, and a counter 8 is installed inside the placement slot 7. The counter 8 installed inside the placement slot 7 can count the number of products produced, making it more convenient to use.

[0033] like Figure 5 As shown, screws 9 are fixedly connected to one side of both the front mold frame 202 and the rear mold frame 201, and a safety locking plate 10 is provided between the two screws 9. The screws 9 and the safety locking plate 10 can enhance the stability of the device during injection molding and prevent the injection molding material inside the device from leaking out.

[0034] like Figure 4 As shown, a dustproof plate 11 is fixedly connected to one side of the mold frame 1. The dustproof plate 11 effectively blocks dust from entering the device, preventing it from affecting product quality.

[0035] Specifically, in use, the notched balanced injection mold structure for flip-top molds works as follows: The molding material is injected into the nozzle 207, flows through the nozzle 207 and into the main runner 208, and cools and shapes between the upper mold core 204 and the lower mold core 203. Because the main runner 208 is located at the center of the product's stress, the injection is uniform, resulting in a high success rate (e.g., ...). Figure 2 (As shown); the water channel 4 can quickly cool and shape the product, while the labor-saving connector 5 makes it easier to connect to an external water source (such as...). Figure 3 (As shown); the base plate 303 is pushed, the spring 305 retracts, and the six evenly spaced ejector pins 301 are pushed out. The ejector pins 301 demold the shaped product, achieving a rapid demolding effect (as shown). Figure 4 (As shown); the sleeve 6 can more securely fix the front mold frame 202 and the rear mold frame 201 to the mold frame 1 (as shown). Figure 5 (As shown); The counter 8 installed inside the placement slot 7 can count the number of products produced, making it more convenient to use. The screw 9 and safety lock plate 10 can enhance the stability of the device during injection molding and prevent the leakage of injection molding material inside the device (e.g. Figure 5 (As shown); the dustproof plate 11 effectively blocks dust from entering the device, preventing it from affecting product quality (e.g. Figure 4 (As shown).

[0036] All technical features in this embodiment can be freely combined according to actual needs.

[0037] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A flip-top injection mold structure with a notch-equipped balanced injection, comprising a mold base (1), characterized in that, The mold frame (1) is provided with an injection molding mechanism (2) for forming products, and the bottom of the injection molding mechanism (2) is provided with a demolding component (3) for easy unloading. The injection molding mechanism (2) includes a rear mold frame (201) fixedly connected to the inner wall of the mold frame (1). A front mold frame (202) is provided on the top of the rear mold frame (201). A lower mold core (203) is provided on the inner wall of the rear mold frame (201). An upper mold core (204) is provided on the top of the lower mold core (203). A sprue plate (205) is fixedly connected to the top of the front mold frame (202). A panel (206) is fixedly connected to the top of the sprue plate (205). A nozzle (207) is provided inside the panel (206). A main runner (208) is provided at the bottom of the nozzle (207). The main runner (208) passes through the interior of the sprue plate (205) and the upper mold core (204). A positioning ring (209) is fixedly connected to the top of the panel (206).

2. The flip-top injection mold structure with notched balanced injection as described in claim 1, characterized in that, The demolding assembly (3) includes six ejector pins (301) that are slidably connected to the interior of the lower mold core (203). A force plate (302) is fixedly connected to the bottom of each ejector pin (301). A base plate (303) is fixedly connected to the bottom of each force plate (302). Guide rods (304) are fixedly connected to the interior of each of the four base plates (303). Springs (305) are provided on the outer walls of each of the four guide rods (304).

3. The flip-top injection mold structure with notched balanced injection as described in claim 1, characterized in that, The upper mold core (204) and the lower mold core (203) are both provided with water channels (4), and the output end of the water channels (4) is provided with a force-saving connector (5).

4. The flip-top injection mold structure with notched balanced injection as described in claim 1, characterized in that, The outer wall of the mold frame (1) is provided with a rod sleeve (6), which is fixedly connected to the inside of the front mold frame (202) and the rear mold frame (201).

5. The flip-top injection mold structure with notched balanced injection as described in claim 1, characterized in that, The rear mold frame (201) has a placement slot (7) inside, and a counter (8) is installed inside the placement slot (7).

6. The flip-top injection mold structure with notched balanced injection as described in claim 1, characterized in that, Each of the front mold frame (202) and the rear mold frame (201) is fixedly connected to one side with a screw (9), and a safety locking plate (10) is provided between the two screws (9).

7. The flip-top injection mold structure with notched balanced injection as described in claim 1, characterized in that, A dustproof plate (11) is fixedly connected to one side of the mold frame (1).