Plastic mold easy to demold
By introducing square grooves and template structures into the injection mold, combined with transmission rods and scrapers, the problems of burrs on injection molded parts and obstruction by the moving mold are solved, achieving efficient demolding and a safe injection molding process.
Patent Information
- Application Number
- CN202520300661.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-25
AI Technical Summary
Traditional injection molds often result in burrs on the finished injection molded parts, and the moving mold and stationary mold can obstruct each other, making it difficult to remove the finished injection molded parts, which affects demolding efficiency and safety.
An easy-to-demold plastic mold was designed. By setting a square groove and template on the top of the stationary mold, combined with a transmission rod and scraper structure, burrs can be automatically scraped off after injection molding, and the operating space can be increased during demolding to avoid the moving mold squeezing the hand.
It effectively reduces defects in finished injection molded parts, improves demolding efficiency, increases operating space, ensures safety, and reduces injection molding costs.
Smart Images
Figure CN223763567U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection mold technology, and in particular to an easy-to-demold plastic mold. Background Technology
[0002] Plastic molds are an important tool used in injection molding processes. They are used to inject molten plastic into the mold cavity, and after cooling and solidification, plastic products of the desired shape are obtained. The design and structure of plastic molds have a crucial impact on their demolding effect.
[0003] In traditional injection molds, the moving mold and the stationary mold are always placed opposite each other during production. This results in the top of the injection groove of the stationary mold being placed at the bottom of the moving mold. The top of the stationary mold is blocked by the moving mold, which limits the operating space at the top of the injection groove. Furthermore, if the moving mold accidentally falls when the worker is removing the finished part from the injection groove of the stationary mold, it can easily squeeze the worker's hands, making it difficult for the worker to remove the finished part from the stationary mold. At the same time, burrs generated during injection will stick to the outside of the stationary mold, causing defects in the injection molded part and making it difficult to remove the finished part from the injection groove. Utility Model Content
[0004] The technical problem to be solved by this utility model is that the existing technology has the disadvantage that the finished injection molded parts have burrs, and the moving mold and the stationary mold block each other, which is not conducive to the workers removing the finished injection molded parts. To this end, we propose an easy demolding plastic mold.
[0005] To achieve the above objectives, this application adopts the following technical solution: an easy-to-demold plastic mold, including a base, a stationary mold fixedly connected to the top of the base, a square groove opened on the top of the stationary mold, and mating grooves opened at both ends of the top of the stationary mold, a shaft fixedly connected to the front end of the inner wall of the square groove, a template rotatably connected to the surface of the shaft, and a transmission rod rotatably connected to both sides of the rear end of the template via a rotating shaft, a moving mold installed on the top of the base, the front end of the transmission rod rotatably connected to the bottom of the moving mold via a hinge, a sliding rod fixedly connected to both ends of the top of the base, a sliding plate slidably connected to the surface of the sliding rod, and a scraper installed on one side of the sliding plate.
[0006] Preferably, push rods are slidably connected to both ends of the skateboard, one end of the push rod is fixedly connected to a handle, and the other end of the push rod is fixedly connected to a scraper.
[0007] Preferably, a spring is fixedly connected to one side of the grip, and the other end of the spring is fixedly connected to one side of the skateboard.
[0008] Preferably, the front end of the base is provided with a storage groove, the inner wall of the storage groove is provided with a collection box, and an extension rod is fixedly connected to the middle of the inner wall of the collection box.
[0009] Preferably, triangular plates are fixedly connected to the top and bottom of the front end of the inner wall of the storage slot, and extension plates are fixedly connected to both sides of the top of the inner wall of the storage slot.
[0010] Preferably, an inclined plate is fixedly connected to one side of the static mold, and the inclined plate has a triangular structure and gradually tilts forward from top to bottom.
[0011] The technical effects and advantages of this utility model are as follows:
[0012] In this invention, when the moving mold and the stationary mold are connected, the stationary mold moves down to press the transmission rod and the template to rotate into the square groove for injection molding. After injection molding is completed, the moving mold moves up, pulling the template and the transmission rod to rotate. The template is in a vertical state and moves out from the bottom of the moving mold, so that the top of the template is placed on one side of the scraper. At this time, the operator pulls the slide plate up and down on the slide bar surface, so that the scraper moves against the template surface, thereby scraping off the burrs and edges of the finished parts produced by injection molding in the template injection groove, reducing defects in the finished injection parts. At the same time, the template moves out from the bottom of the moving mold, and when the operator demolds the injection parts in the template, the top of the template is not restricted by the moving mold, and the operating space is larger, which is more conducive to the operator removing the finished products in the template. At the same time, it prevents the moving mold from moving down and squeezing the operator's hands during demolding. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the top structure of the static mold of this utility model;
[0015] Figure 3 This is a schematic diagram of the bottom structure of the moving mold of this utility model;
[0016] Figure 4 This is a schematic diagram of the scraper position structure of this utility model.
[0017] Legend: 1. Base; 2. Static mold; 3. Square groove; 4. Connecting groove; 5. Shaft; 6. Template; 7. Transmission rod; 8. Moving mold; 9. Slide rod; 10. Slide plate; 11. Scraper; 12. Push rod; 13. Handle; 14. Spring; 15. Storage slot; 16. Collection box; 17. Extension rod; 18. Triangle plate; 19. Extension plate; 20. Inclined plate. Detailed Implementation
[0018] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.
[0019] Reference Figure 1 - Figure 4 As shown, this utility model provides a technical solution: an easy-to-demold plastic mold, including a base 1, a stationary mold 2 fixedly connected to the top of the base 1, a square groove 3 opened on the top of the stationary mold 2, and docking grooves 4 opened at both ends of the top of the stationary mold 2, a shaft 5 fixedly connected to the front end of the inner wall of the square groove 3, a template 6 rotatably connected to the surface of the shaft 5, and transmission rods 7 rotatably connected to both sides of the rear end of the template 6 via rotating shafts, a moving mold 8 installed on the top of the base 1, the front end of the transmission rod 7 rotatably connected to the bottom of the moving mold 8 via a hinge, and sliding rods 9 fixedly connected to both ends of the top of the base 1, a sliding plate 10 slidably connected to the surface of the sliding rod 9, and a scraper 11 installed on one side of the sliding plate 10. When the moving mold 8 docks with the stationary mold 2, the stationary mold 2 moves down to press the transmission rod 7 and the template 6 to rotate to the square groove 3. Injection molding is performed in the groove 3. After injection molding is completed, the moving mold 8 moves upward, pulling the template 6 and the transmission rod 7 to rotate. The template 6 is in a vertical state and moves out from the bottom of the moving mold 8, so that the top of the template 6 is placed on one side of the scraper 11. At this time, the operator pulls the slide plate 10 up and down on the surface of the slide rod 9, so that the scraper 11 moves against the surface of the template 6, thereby scraping off the burrs and edges of the finished parts produced by injection molding in the injection groove of the template 6, reducing defects in the finished injection parts. At the same time, the template 6 moves out from the bottom of the moving mold 8. When the operator demolds the injection part in the template 6, the top of the template 6 is not restricted by the moving mold 8, and the operating space is larger, which is more conducive to the operator removing the finished product in the template 6. At the same time, it prevents the moving mold 8 from moving down and squeezing the operator's hand during demolding.
[0020] Reference Figure 4 As shown in this embodiment: push rods 12 are slidably connected to both ends of the slide plate 10. One end of the push rod 12 is fixedly connected to a handle 13, and the other end of the push rod 12 is fixedly connected to a scraper 11. The push rod 12 can slide back and forth inside the slide plate 10, so that the operator can push the handle 13 to drive the push rod 12 to move the scraper 11 back and forth, adjust the distance between the scraper 11 and the surface of the template 6, so that the scraper 11 can fit tightly against the injection surface of the template 6 to scrape off the burrs of the injection molded part.
[0021] Reference Figure 4 As shown in this embodiment: a spring 14 is fixedly connected to one side of the handle 13, and the other end of the spring 14 is fixedly connected to one side of the slide plate 10. By setting the spring 14 between the slide plate 10 and the handle 13, the positions of the handle 13 and the push rod 12 are bound by the spring 14. When the scraper 11 is pushed forward by the handle 13, the spring 14 is compressed by the handle 13 and stores force. When the operator releases the binding of the scraper 11, the spring 14 will push the handle 13 to cause the scraper 11 and the push rod 12 to rebound and reset the initial position of the scraper 11.
[0022] Reference Figure 2 As shown in this embodiment: a storage groove 15 is provided at the front end of the base 1, and a collection box 16 is placed on the inner wall of the storage groove 15. An extension rod 17 is fixedly connected to the middle of the inner wall of the collection box 16. Through the storage groove 15, the collection box 16 is placed in the storage groove 15 and at the same time, the collection box 16 is placed at the bottom of the scraper 11. When the scraper 11 scrapes off the burrs in the template 6, the burrs fall downwards and are collected by the collection box 16, thereby collecting the waste material scraped off by the scraper 11, preventing the waste material from splashing and causing pollution after being scraped off, and making it convenient for workers to collect the waste material for reuse and reduce injection molding costs.
[0023] Reference Figure 1 and Figure 2 As shown in this embodiment: Triangular plates 18 are fixedly connected to the top and bottom of the front end of the inner wall of the storage slot 15, and extension plates 19 are fixedly connected to both sides of the top of the inner wall of the storage slot 15. The triangular plates 18 and extension plates 19 constrain the position of the collection box 16, so that when the collection box 16 is placed at the bottom of the storage slot 15, the front end of the collection box 16 is restricted by the extension plates 19, and the collection box 16 cannot move forward. When the staff needs to take the collection box 16 out of the storage slot 15, the staff pulls the extension rod 17 upward to move the collection box 16 upward and press it against the bottom of the extension plate 19, so that the collection box 16 is placed in the gap between the two triangular plates 18. At this time, the collection box 16 can be moved forward to be taken out of the storage slot 15, thereby preventing the collection box 16 from falling out of the storage slot 15 due to vibration, and making it easier for the staff to restrict the position of the collection box 16 within the storage slot 15.
[0024] Reference Figure 1 and Figure 2 As shown in this embodiment: An inclined plate 20 is fixedly connected to one side of the static mold 2. The inclined plate 20 has a triangular structure and gradually tilts forward from top to bottom. Due to the forward tilting structure of the inclined plate 20, when the scraper 11 scrapes the waste material and it falls downward, the waste material contacts one side of the inclined plate 20 and is guided to the top position of the collection box 16 by the forward tilting surface of the inclined plate 20. This allows the waste material to be accurately collected by the collection box 16, ensuring that the waste material falling randomly can enter the collection box 16.
[0025] Working principle: When the moving mold 8 aligns with the stationary mold 2, the stationary mold 2 moves downward, pressing the transmission rod 7 and the template 6 to rotate into the square groove 3 for injection molding. After injection molding is complete, the moving mold 8 moves upward, pulling the template 6 and the transmission rod 7 to rotate. The template 6 is in a vertical position and moves out from the bottom of the moving mold 8, so that the top of the template 6 is placed on one side of the scraper 11. At this time, the operator pulls the slide plate 10 up and down on the surface of the slide rod 9, causing the scraper 11 to move against the surface of the template 6, thereby scraping off the burrs and edges of the finished part generated by injection molding in the injection groove of the template 6, reducing defects in the finished injection molded part. At the same time, the template 6 moves out from the bottom of the moving mold 8, and when the operator demolds the injection molded part in the template 6, the top of the template 6 is not restricted by the moving mold 8, providing a larger operating space. This design facilitates the removal of finished products from the mold plate 6 by the operator, while preventing accidental downward movement of the moving mold 8 and pressure on the operator's hand during demolding. The push rod 12 can slide back and forth within the slide plate 10, allowing the operator to push the handle 13 to move the push rod 12, thus moving the scraper 11 back and forth and adjusting the distance between the scraper 11 and the surface of the mold plate 6. This ensures the scraper 11 is tightly fitted to the injection surface of the mold plate 6 to remove burrs from the injection-molded part. A spring 14 is positioned between the slide plate 10 and the handle 13, binding the handle 13 and the push rod 12. When the scraper 11 is pushed forward by the handle 13, the spring 14 is compressed and stores force. When the operator releases the grip on the scraper 11, the spring 14 will... Pushing the handle 13 causes the scraper 11 and push rod 12 to spring back, resetting the scraper 11 to its initial position. The collection box 16 is placed inside the collection slot 15, simultaneously positioning it at the bottom of the scraper 11. When the scraper 11 scrapes off burrs from the template 6, the burrs fall downwards and are collected by the collection box 16, thus collecting the waste scraped by the scraper 11. This prevents waste from splashing and causing pollution, facilitating waste collection and reuse, and reducing injection molding costs. The triangular plate 18 and extension plate 19 constrain the position of the collection box 16. When the collection box 16 is at the bottom of the collection slot 15, its front end is restricted by the extension plate 19, preventing it from moving forward. When staff need to remove the collection box 16 from the storage slot 15, they pull the extension rod 17 upwards, causing the collection box 16 to move upwards and press against the bottom of the extension plate 19. This positions the collection box 16 between the two triangular plates 18. Moving the collection box 16 forward allows it to be removed from the storage slot 15, preventing it from falling due to vibration. This helps staff keep the collection box 16 within the storage slot 15. The forward-tilting structure of the inclined plate 20 allows the scraper 11 to remove waste material. When the waste material falls downwards after being scraped by the scraper 11, it contacts one side of the inclined plate 20 and is guided to the top of the collection box 16 by the forward-tilting surface of the plate, ensuring precise collection.Ensure that carelessly dropped waste can enter collection box 16.
[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An easy-release plastic mold comprising a base (1), characterized in that: The top of the base (1) is fixedly connected with a static mold (2), the top of the static mold (2) is provided with a square groove (3), both ends of the top of the static mold (2) are provided with a butt joint groove (4), the front end of the inner wall of the square groove (3) is fixedly connected with a shaft rod (5), the surface of the shaft rod (5) is rotatably connected with a mold plate (6), both sides of the rear end of the mold plate (6) are rotatably connected with a transmission rod (7) through a rotating shaft, the top of the base (1) is provided with a dynamic mold (8), the front end of the transmission rod (7) is rotatably connected with the bottom of the dynamic mold (8) through a hinge, both ends of the top of the base (1) are fixedly connected with a sliding rod (9), the surface of the sliding rod (9) is slidably connected with a sliding plate (10), one side of the sliding plate (10) is provided with a scraper (11).
2. A plastic mold for easy mold release according to claim 1, wherein: Both ends of the sliding plate (10) are slidably connected with a push rod (12), one end of the push rod (12) is fixedly connected with a handle (13), the other end of the push rod (12) is fixedly connected with the scraper (11).
3. A plastic mold for easy mold release according to claim 2, wherein: One side of the handle (13) is fixedly connected with a spring (14), the other end of the spring (14) is fixedly connected with one side of the sliding plate (10).
4. A plastic mold according to claim 1, wherein: The front end of the base (1) is provided with a storage groove (15), the inner wall of the storage groove (15) is placed with a collecting box (16), the inner wall of the collecting box (16) is fixedly connected with an extension rod (17) in the middle.
5. A plastic mold for easy mold release according to claim 4, wherein: The top and the bottom of the front end of the inner wall of the storage groove (15) are fixedly connected with a triangular plate (18), both sides of the top of the inner wall of the storage groove (15) are fixedly connected with an extension plate (19).
6. A plastic mold for easy mold release according to claim 1, wherein: One side of the static mold (2) is fixedly connected with an inclined plate (20), the inclined plate (20) is a triangular structure and gradually inclines forward from top to bottom.