An automatic injection molding mold

Abstract

The utility model relates to the field of injection mold discloses an automatic injection molding mold, including lower mould and upper mould, the upper mould upper surface is provided with push liquid mechanism, when needing to clean injection liquid near injection port, through manual twist axle makes its rotation, this rotation movement is transmitted to another double thread screw through linkage zone, when two double thread screws rotate synchronously, two opposite shift drive blocks of screw thread connection in screw front section and rear section, because the drive of screw thread, will along the axial direction of screw opposite movement, when opposite shift drive block opposite movement, will drive two sliding frame along the upper surface of upper mould, from the front and back two sides to the direction of injection port in the middle synchronous sliding, in the process of to the middle, the inside surface of inclined guide plate will gradually cut into and extrude injection port and its connected runner in the injection liquid that has not completely solidified or remained, thereby reduced the waste material formed near injection port after each injection.

Description

Technical Field

[0001] This utility model relates to the field of injection molds, and in particular to an automatic injection molding mold. Background Technology

[0002] Plastics, as a high-performance, cost-controllable, and easy-to-process material, have been widely used in various sectors of the national economy, including automobiles, electronics, home appliances, medical devices, and packaging. Injection molding is one of the most important and widely used production technologies in plastic processing. Its core equipment consists of injection molding machines and injection molds. The quality and level of intelligence of injection molds directly determine the production efficiency, dimensional accuracy, surface quality, and production cost of plastic products.

[0003] Currently, after the injection molding cycle is completed, most molds inevitably leave some residual injection liquid inside the injection port. Traditionally, the removal of this residue relies heavily on manual labor. Operators must use specialized tools such as copper rods and screwdrivers, after opening the mold, to manually tap and pry away the residual plastic inside the injection port while it is still hot or after it has cooled. This method is not only time-consuming and labor-intensive, severely impacting production efficiency, but also poses a safety hazard of burns or cuts to operators who are in close contact with the high-temperature mold. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an automatic injection molding die, which solves the above problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic injection molding mold, comprising a lower mold and an upper mold, wherein a liquid pushing mechanism is provided on the upper surface of the upper mold, the liquid pushing mechanism comprising a fixed bracket; a double-threaded screw, a displacement driving block, a limiting slide rail, a sliding frame, a guide plate, a torsion shaft, and a linkage belt; the number of fixed brackets is set to two and fixedly connected to the left and right sides of the upper mold respectively; a double-threaded screw is provided on the inner side of each of the two fixed brackets, the double-threaded screw is rotatably connected to the fixed bracket; a displacement driving block is symmetrically threaded on the front and rear sides of the double-threaded screw; a sliding frame is fixedly connected to the upper end of the front and rear displacement driving blocks; the lower ends of the two sliding frames are respectively fitted to the front and rear sides of the upper surface of the upper mold; an injection port is provided in the middle of the upper mold; a guide plate is fixedly connected to the side of each of the two sliding frames near the injection port; the two guide plates are symmetrically arranged and inclined to the corresponding sliding frames.

[0006] Preferably, one end of each of the two double-threaded screws is disposed inside the linkage belt, and the linkage belt is tensioned and sleeved on the outside of the two double-threaded screws, and one end of one of the double-threaded screws is connected to a torsion shaft.

[0007] Preferably, the upper mold is provided with a flow diversion mechanism, which includes a mold box, a guide port, a flow diversion port, and a mold cavity. The number of mold boxes is set to two, and the two mold boxes are fixedly connected to the left and right sides inside the upper mold.

[0008] Preferably, both mold boxes have mold cavities inside.

[0009] Preferably, the flow guide is located below the injection port, and there are flow dividers on both the left and right sides below the flow guide, with the two flow dividers communicating with the two mold boxes respectively.

[0010] Preferably, limit holes are provided at all four corners of the upper surface of the lower mold.

[0011] Preferably, locking rods are fixedly connected to the four corners of the lower surface of the upper mold.

[0012] Preferably, a limiting slide rail is fixedly connected to the inner side of the fixed bracket, and a displacement driving block is slidably connected to the inner side of the limiting slide rail. Beneficial effects

[0013] This invention provides an automatic injection molding die. Compared with the prior art, it has the following advantages: 1. In this utility model, by setting a liquid pushing mechanism, when it is necessary to clean the injection liquid near the injection port, the shaft is manually turned to rotate. This rotational motion is transmitted to another double-threaded screw through a linkage belt. When the two double-threaded screws rotate synchronously, the two opposing drive blocks connected by threads to the front and rear sections of the screw will move towards each other along the axis of the screw due to the drive of the threads. When the opposing drive blocks move towards each other, they will drive the two sliding frames to slide synchronously along the upper surface of the upper mold from the front and rear sides towards the injection port in the middle. During the process of moving towards the middle, the inner side of the inclined guide plate will gradually cut into and squeeze the injection liquid that has not been completely solidified or remains in the injection port and its connected flow channel, thereby reducing the waste material formed near the injection port after each injection. 2. In this utility model, through the set flow-dividing mechanism, the injection liquid enters the respective mold box through the flow-dividing port and fills the entire mold cavity along the flow-dividing port. Due to the uniformity of the flow-dividing process, the melt filling pressure, filling speed and filling time in the left and right mold cavities are basically consistent, thereby realizing the synchronous and equal molding of the two products in the same injection molding cycle. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the front side of an automatic injection molding die proposed in this utility model; Figure 2This is a schematic diagram of the rear three-dimensional structure of an automatic injection molding mold proposed in this utility model; Figure 3 This is a schematic diagram of the internal structure of an automatic injection molding die proposed in this utility model; Figure 4 This is a schematic diagram of the internal structure of the upper mold in an automatic injection molding mold proposed in this utility model.

[0015] Legend: 1. Lower mold; 2. Upper mold; 3. Liquid ejection mechanism; 301. Fixed bracket; 302. Double threaded screw; 303. Shifting drive block; 304. Limiting slide rail; 305. Sliding frame; 306. Guide plate; 307. Torsion shaft; 308. Linkage belt; 4. Diverting mechanism; 401. Mold box; 402. Guide port; 403. Diverting port; 404. Mold cavity; 5. Limiting hole; 6. Locking rod; 7. Injection port. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-4 This utility model provides two technical solutions, specifically including the following embodiments: Example 1:

[0018] An automatic injection molding die includes a lower die 1 and an upper die 2. A liquid ejection mechanism 3 is provided on the upper surface of the upper die 2. The liquid ejection mechanism 3 includes a fixed bracket 301; a double-threaded screw 302; a displacement drive block 303; a limiting slide rail 304; a sliding frame 305; a guide plate 306; a torsion shaft 307; and a linkage belt 308. Two fixed brackets 301 are provided, each fixedly connected to the left and right sides of the upper die 2. A double-threaded screw 302 is provided inside each of the two fixed brackets 301. The double-threaded screw 302 is rotatably connected to the fixed bracket 301. The displacement drive blocks 303 are symmetrically threaded onto the front and rear sides of the double-threaded screw 302. A sliding frame is fixedly connected to the upper end of each displacement drive block 303. 305. The lower ends of two sliding frames 305 are respectively attached to the front and rear sides of the upper surface of the upper mold 2. An injection port 7 is opened in the middle of the upper mold 2. A guide plate 306 is fixedly connected to the side of each of the two sliding frames 305 near the injection port 7. The two guide plates 306 are symmetrically arranged and are inclined to the corresponding sliding frames 305. One end of each of the two double threaded screws 302 is inserted through the inside of the linkage belt 308. The linkage belt 308 is tensioned and sleeved on the outside of the two double threaded screws 302. One end of one of the double threaded screws 302 is connected to a torsion shaft 307. A limit slide rail 304 is fixedly connected to the inside of the fixed bracket 301. A displacement drive block 303 is slidably connected to the inside of the limit slide rail 304.

[0019] During operation, when it is necessary to clean the injection fluid near the injection port 7, the shaft 307 is manually turned to rotate. This rotational motion is transmitted to another double-threaded screw 302 through the linkage belt 308. When the two double-threaded screws 302 rotate synchronously, the two opposing drive blocks 303 connected to the front and rear sections of the screw will move towards each other along the axis of the screw due to the drive of the screw. When the opposing drive blocks 303 move towards each other, they will drive the two sliding frames 305 to slide synchronously along the upper surface of the upper mold 2 from the front and rear sides towards the injection port 7 in the middle. During the process of moving towards the middle, the inner side of the inclined guide plate 306 will gradually cut into and squeeze the injection fluid that has not been completely solidified or remains in the injection port 7 and its connected flow channel, thereby reducing the waste material formed near the injection port 7 after each injection. Example 2:

[0020] Based on Embodiment 1, the upper mold 2 is internally equipped with a flow-diverting mechanism 4. The flow-diverting mechanism 4 includes a mold box 401, a guide port 402, a flow-diverting port 403, and a mold cavity 404. Two mold boxes 401 are provided, fixedly connected to the left and right sides of the upper mold 2. Each mold box 401 contains a mold cavity 404. The guide port 402 is located below the injection port 7. Flow-diverting ports 403 are located on the left and right sides below the guide port 402. The two flow-diverting ports 403 communicate with the two mold boxes 401 respectively. After the injection liquid enters its respective mold box 401 through the flow-diverting port 403, it flows along the flow-diverting port 403... The entire mold cavity 404 is filled. Due to the uniformity of the flow distribution process, the melt filling pressure, filling speed and filling time in the left and right mold cavities 404 are basically consistent, thus realizing the synchronous and equal molding of the two products in the same injection cycle. Limiting holes 5 are opened at the four corners of the upper surface of the lower mold 1, and locking rods 6 are fixedly connected at the four corners of the lower surface of the upper mold 2. Before the mold closes, the upper mold 2 and the lower mold 1 are in a separated state. When the moving platen of the injection molding machine drives the upper mold 2 to move downward and close with the lower mold 1 on the fixed platen, the locking rods 6 set at the four corners of the lower surface of the upper mold 2 begin to align with the limiting holes 5 opened at the four corners of the upper surface of the lower mold 1.

[0021] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automatic injection molding die, comprising a lower die (1) and an upper die (2), characterized in that: The upper surface of the upper mold (2) is provided with a liquid pushing mechanism (3), which includes a fixed bracket (301); a double threaded screw (302), a displacement drive block (303), a limit slide rail (304), a sliding frame (305), a guide plate (306), a torsion shaft (307), and a linkage belt (308). The fixed bracket (301) is set to two and is fixedly connected to the left and right sides of the upper mold (2) respectively. The inner side of each of the two fixed brackets (301) is provided with a double threaded screw (302). The double threaded screw (302) and the fixed bracket (301) are connected to each other. The double threaded screw (302) is symmetrically threaded with opposing drive blocks (303) on both the front and rear sides. The upper ends of the opposing drive blocks (303) are fixedly connected with sliding frames (305). The lower ends of the two sliding frames (305) are respectively attached to the front and rear sides of the upper surface of the upper mold (2). The upper mold (2) has an injection port (7) in the middle. The two sliding frames (305) are fixedly connected with guide plates (306) on the side near the injection port (7). The two guide plates (306) are symmetrically arranged and inclined to the corresponding sliding frames (305).

2. The automatic injection molding die according to claim 1, characterized in that: One end of each of the two double-threaded screws (302) is inserted through the inside of the linkage belt (308), and the linkage belt (308) is tensioned and sleeved on the outside of the two double-threaded screws (302). One end of one of the double-threaded screws (302) is connected to a torsion shaft (307).

3. The automatic injection molding die according to claim 1, characterized in that: The upper mold (2) is provided with a flow diversion mechanism (4), which includes a mold box (401), a guide port (402), a flow diversion port (403), and a mold cavity (404). The number of mold boxes (401) is set to two, and the two mold boxes (401) are fixedly connected to the left and right sides inside the upper mold (2).

4. An automatic injection molding die according to claim 3, characterized in that: Both mold boxes (401) have mold cavities (404) inside.

5. An automatic injection molding die according to claim 3, characterized in that: The flow guide (402) is located below the injection port (7). The flow guide (402) is provided with a flow divider (403) on both the left and right sides below it. The two flow dividers (403) are respectively connected to the two mold boxes (401).

6. An automatic injection molding die according to claim 1, characterized in that: Limiting holes (5) are provided at the four corners of the upper surface of the lower mold (1).

7. An automatic injection molding die according to claim 1, characterized in that: Locking rods (6) are fixedly connected to the four corners of the lower surface of the upper mold (2).

8. An automatic injection molding die according to claim 1, characterized in that: The fixed bracket (301) is fixedly connected to the inner side of the limiting slide rail (304), and the limiting slide rail (304) is slidably connected to the inner side of the moving drive block (303).

Images