Packaging plastic injection molding machine with injection mold calibration function

Abstract

The invention discloses a packaging plastic injection molding machine with an injection mold calibration function, and relates to the technical field of plastic injection molding, the packaging plastic injection molding machine comprises an injection molding machine, an injection molding pipeline is arranged in the injection molding machine, a first mold and a second mold are arranged in the injection molding machine, and a dynamic exhaust mechanism is arranged at the top of the first mold; a dynamic exhaust mechanism is arranged, and a second rotating block, a long column and a sealing plate are pushed to transversely move along the inner wall of an exhaust port through a push rod in a hinged mode, so that the inner wall of the exhaust port is closed, the exhaust port at the lower position can be automatically closed, and the exhaust port at the higher position cannot be closed; and when the two sides of the first mold are not horizontal, the opening of the exhaust port at the lower position can be automatically closed, so that the problem of blockage caused by the fact that the exhaust port is lower and hot melt is poured into the exhaust port is avoided, and meanwhile, the problems that some parts of an injection molding part cannot be fully filled and the phenomenon of insufficient injection occurs are also avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic injection molding, and particularly to a packaging plastic injection molding machine with a function of calibrating an injection mold. Background Art

[0002] An injection molding machine is a supporting device for manufacturing plastic molding dies. The injection molding machine uses plastic molding dies to make various shaped plastic products. Nowadays, there are more and more types of injection molding machines. The existing injection molding machines are generally divided into three types: vertical, horizontal, and all-electric. People can choose different styles in different occasion environments, which is more convenient and practical. With the continuous development of technology, people's requirements for the manufacturing process of injection molding machines are also getting higher and higher; In a patent application with the publication number CN110962317A, a packaging plastic injection molding machine with a function of calibrating an injection mold is described. A fixed base is fixedly connected to the lower outer surface of the injection molding machine main body. A layered cooling and placing plate mechanism is arranged on one outer surface of the injection molding machine main body. An electric control box is arranged on the other outer surface of the injection molding machine main body. A workbench is arranged on the upper outer surface of the injection molding machine main body; After the injection molding machine or the mold works or is used for a long time, it is easy to produce certain deformation or the problem of the flatness of the ground placement, resulting in the left-right balance being skewed. Then, the liquid level of the hot melt liquid injected into the mold will rise and cover the exhaust hole on the lower side of the top of the mold inner wall. However, at this time, the higher part of the top of the mold inner wall still fails to be filled with the hot melt liquid, and it is necessary to continue injecting the hot melt liquid. At this time, the hot melt liquid will overflow from the exhaust hole at the lower position, resulting in the blockage of the exhaust hole, affecting the subsequent exhaust problem and also hindering the current exhaust speed, and some parts of the injection molded part cannot be completely filled, resulting in the phenomenon of underfilling. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a packaging plastic injection molding machine with a function of calibrating an injection mold, achieving the purpose of solving the above problems.

[0004] To achieve the above object, the present invention is realized through the following technical solutions: A packaging plastic injection molding machine with a function of calibrating an injection mold, including an injection molding machine. An injection pipeline is arranged inside the injection molding machine. A first mold and a second mold are arranged inside the injection molding machine. A dynamic exhaust mechanism is arranged on the top of the first mold; The dynamic exhaust mechanism includes: A counterweight block, the counterweight block is a square block structure. One end of the counterweight block is connected to a push plate through a push block. The push plate is hinged to a long column through a linkage mechanism. The long column is a columnar structure. The counterweight block is used to slide on the top of the first mold; A closed plate, the closed plate is a rectangular plate-like structure, one side of the counterweight block is connected with a push plate through a fixed slide bar, the closed plate is slidably connected to the inner wall of the exhaust port, and the closed plate is used to open and close the exhaust port.

[0005] Preferably, a rotating ball is rotatably connected to the bottom of the push block, the rotating ball is a spherical structure, and the rotating ball is used to reduce the friction force when the counterweight block moves left and right.

[0006] Preferably, the linkage mechanism includes a connecting block, one end of the connecting block is fixedly connected to one side of the push plate, the other end of the connecting block is rotatably connected to a first rotating block, a push rod is fixedly connected to the outer wall of the first rotating block, one end of the push rod is fixedly connected to a second rotating block, and the bottom of the second rotating block is rotatably connected to the top of the long column.

[0007] Preferably, a closed plate is fixedly connected to the bottom end of the long column, a first spring is fixedly connected to one side of the closed plate, one end of the first spring is fixedly connected to the inner wall of the exhaust port, and stoppers are fixedly connected to both ends of the fixed slide bar.

[0008] Preferably, the closed plate is a rectangular plate-like structure, and the first rotating block and the second rotating block are circular block-like structures.

[0009] Preferably, a vibration mechanism is arranged on the outer wall of the long column, the vibration mechanism includes a second spring, one end of the second spring is fixedly connected to the outer wall of the long column, and the other end of the second spring is fixedly connected to a scraping plate.

[0010] Preferably, the scraping plate is a rectangular plate-like structure, a sliding plate is fixedly connected to one side of the scraping plate, and the outer wall of the sliding plate is slidably connected to the inner wall of the closed plate.

[0011] Preferably, the sliding plate is a square plate-like structure, and the second spring is used to reciprocate the scraping plate left and right.

[0012] The present invention provides a packaging plastic injection molding machine with the function of calibrating an injection mold. It has the following beneficial effects: 1. By setting a dynamic exhaust mechanism, the present invention uses a hinged method to push the second rotating block, the long column and the closed plate to move horizontally along the inner wall of the exhaust port through a push rod, thereby closing the inner wall of the exhaust port, so that the lower exhaust port will be automatically closed, while the higher exhaust port will not be closed. Then, when the two sides of the first mold are not horizontal, the opening of the lower exhaust port can be automatically closed tightly, avoiding the problem of blockage caused by the lower exhaust port being filled with hot melt, and at the same time avoiding the problem of underfilling where some parts of the injection molded part cannot be completely filled.

[0013] 2. By setting up a dynamic exhaust mechanism in the present invention, the long column and the closing plate are pulled to slide on the inner wall of the exhaust port, opening the diameter of the exhaust port. This enables the automatic opening of the exhaust port at a higher position even after the exhaust port at a lower position is closed, thereby ensuring a stable exhaust rate and avoiding the problem that when the gas in the mold cannot be discharged in time, the gas will occupy the space in the cavity and hinder the filling of the plastic melt.

[0014] 3. By setting up a dynamic exhaust mechanism in the present invention, once the counterweight moves, the staff can quickly observe its horizontal state, so as to timely adjust the positional relationship between the first mold and the injection molding machine and correct its horizontal state, preventing problems from occurring during injection molding.

[0015] 4. By setting up a vibration mechanism in the present invention, during the operation of the machine, vibrations will occur. When vibrating, it will cause the counterweight to move slightly left and right, which is then transmitted to the closing plate to also move left and right. The inner wall of the exhaust port is scraped left and right by the scraper, scraping off a large amount of hot melt adhered to the inner wall of the exhaust port during long-term injection molding, preventing the problem that the hot melt accumulates more and more and blocks to affect the exhaust rate. 5. By setting up a vibration mechanism in the present invention, at the same time, the scraper will move left and right with the vibration. The slide plate is driven by the elastic force of the second spring to sway left and right on the inner wall of the closing plate, and thus the closing plate also moves left and right and rebounds with the elastic force, increasing the distance of its left and right back-and-forth swaying, so as to ensure that the inner wall of the exhaust port can be fully scraped by the scraper, ensuring sufficient cleaning ability inside the exhaust port to keep the exhaust port unobstructed and avoiding problems of blockage and poor exhaust. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the first mold of the present invention; Figure 3 is a schematic structural diagram of the dynamic exhaust mechanism of the present invention; Figure 4 is a partial schematic structural diagram of the dynamic exhaust mechanism of the present invention; Figure 5 is a disassembled schematic structural diagram of the dynamic exhaust mechanism of the present invention; Figure 6 is a schematic structural diagram of the counterweight of the present invention; Figure 7 of the present invention Figure 3 is an enlarged view of part A; Figure 8 is a schematic diagram of the structural movement of the dynamic exhaust mechanism of the present invention Figure 1 ; Figure 9Structural motion schematic of the dynamic exhaust mechanism of the present invention Figure 2 ; Figure 10 Structural motion schematic of the dynamic exhaust mechanism of the present invention Figure 3 ; Figure 11 Structural motion schematic of the dynamic exhaust mechanism of the present invention Figure 4 ; Figure 12 Structural motion schematic of the dynamic exhaust mechanism of the present invention Figure 5 ; Figure 13 Structural schematic diagram of the vibration mechanism of the present invention.

[0017] In the figure: 1 injection molding machine, 2 injection molding pipeline, 3 dynamic exhaust mechanism, 301 exhaust port, 302 counterweight, 303 rotating ball, 304 fixed slide bar, 305 push block, 306 push plate, 307 connecting block, 308 first rotating block, 309 push rod, 310 second rotating block, 311 long column, 312 closing plate, 313 stop block, 314 first spring, 4 vibration mechanism, 401 second spring, 402 scraper, 403 slide plate, 5 first mold, 6 second mold. Specific implementation mode

[0018] Example 1: Please refer to Figures 1-5 , the present invention provides a technical solution: a packaging plastic injection molding machine with a calibration injection mold function, including an injection molding machine 1, an injection molding pipeline 2 is arranged inside the injection molding machine 1, a first mold 5 and a second mold 6 are arranged inside the injection molding machine 1, and a dynamic exhaust mechanism 3 is arranged on the top of the first mold 5; The dynamic exhaust mechanism 3 includes: A counterweight 302, the counterweight 302 is a square block structure, one end of the counterweight 302 is connected with a push plate 306 through a push block 305, the push plate 306 is hinged with a long column 311 through a linkage mechanism, the long column 311 is a columnar structure, and the counterweight 302 is used to slide on the top of the first mold 5; A closing plate 312, the closing plate 312 is a rectangular plate structure, one side of the counterweight 302 is connected with a push plate 306 through a fixed slide bar 304, the closing plate 312 is slidably connected to the inner wall of the exhaust port 301, and the closing plate 312 is used to open and close the exhaust port 301; When the injection molding machine 1 starts to work and injects hot melt into the second mold 6 and the first mold 5 through the injection molding pipeline 2, when the injection is completed, when a large amount of hot melt is injected, the air inside the first mold 5 is squeezed and discharged out through the exhaust port 301 opened on the top of the first mold 5. The two exhaust ports 301 on the left and right at the top of the exhaust port 301 stably discharge the air inside the first mold 5; Example 2: Please refer toFigures 1-12 , on the basis of the first embodiment, the present invention provides a technical solution: a rotating ball 303 is rotatably connected to the bottom of the pushing block 305. The rotating ball 303 is of a spherical structure and is used to reduce the friction when the counterweight block 302 moves left and right.

[0019] The linkage mechanism includes a connecting block 307. One end of the connecting block 307 is fixedly connected to one side of the pushing plate 306. The other end of the connecting block 307 is rotatably connected to a first rotating block 308. A push rod 309 is fixedly connected to the outer wall of the first rotating block 308. One end of the push rod 309 is fixedly connected to a second rotating block 310. The bottom of the second rotating block 310 is rotatably connected to the top of the long column 311.

[0020] The bottom end of the long column 311 is fixedly connected to a closing plate 312. A first spring 314 is fixedly connected to one side of the closing plate 312. One end of the first spring 314 is fixedly connected to the inner wall of the exhaust port 301. Blocks 313 are fixedly connected to both ends of the fixed slide bar 304.

[0021] The closing plate 312 is of a rectangular plate structure, and the first rotating block 308 and the second rotating block 310 are of a circular block structure; Once the injection molding machine 1 and the first mold 5 have been working or in use for a long time, they are prone to certain deformations or problems with the flatness of the ground placement, resulting in the skew of the left and right balance of the first mold 5. Once the first mold 5 is skewed, the liquid level of the hot melt liquid injected into the first mold 5 through the injection pipeline 2 will still remain horizontal due to gravity. When the liquid level rises, the exhaust port 301 on the lower side of the top of the inner wall of the first mold 5 will be covered by the rising liquid level. However, at this time, the higher part of the top of the inner wall of the first mold 5 still fails to be filled with the hot melt liquid. When it is necessary to continue injecting the hot melt liquid, the hot melt liquid will overflow from the exhaust port 301 at the lower position, resulting in the blockage of the exhaust port 301 and affecting the subsequent exhaust function; Once the first mold 5 is skewed, the counterweight block 302 with a larger counterweight will start to slide towards the lower part on the first mold 5 along with the inclination through the rotating ball 303 rotating below, and push the push plate 306 to move through the push block 305. The push block 305 slides on the outer wall of the fixed slide bar 304. When the push plate 306 is pushed, the second rotating block 310, the long column 311 and the closing plate 312 are pushed to move horizontally along the inner wall of the exhaust port 301 through the push rod 309 in an articulated manner, so as to close the inner wall of the exhaust port 301, making the exhaust port 301 at the lower part be automatically closed, while the exhaust port 301 at the higher part will not be closed. Then, when the two sides of the first mold 5 are not horizontal, the opening of the exhaust port 301 at the lower position can be automatically hermetically closed, avoiding the problem that the exhaust port 301 is blocked due to being poured with hot melt liquid because it is at a lower position, and also avoiding the problem that some parts of the injection molded part cannot be completely filled and underfilling occurs; At the exhaust port 301 at the higher position at the other end, due to the separation of the counterweight block 302, the push block 305 and the push plate 306 at the higher position are pulled away from the exhaust port 301 at the higher position, and then the long column 311 and the closing plate 312 are driven to slide on the inner wall of the exhaust port 301 at the higher position through the connection block 307, the first rotating block 308, the push rod 309 and the second rotating block 310 in an articulated manner. At this time, since the moving direction of the push plate 306 is away from the exhaust port 301, the long column 311 and the closing plate 312 are pulled to slide on the inner wall of the exhaust port 301 to open the diameter of the exhaust port 301, so that after the exhaust port 301 at the lower position is closed, the exhaust port 301 at the higher position can also be automatically opened, so as to ensure a stable exhaust rate and avoid the problem that when the gas in the mold cannot be discharged in time, the gas will occupy the space in the cavity and hinder the filling of the plastic melt; Moreover, the movement of the counterweight block 302 is ensured to be stable and smooth by the rotating ball 303 at the bottom. The counterweight of the counterweight block 302 is large, and even if there is a little inclination, it can still push the push block 305 and the push plate 306 to slide, ensuring stable operation; Moreover, once the counterweight block 302 moves, the staff can quickly observe its horizontal state, so as to timely adjust the positional relationship between the first mold 5 and the injection molding machine 1 and correct its horizontal state to prevent problems from occurring during injection molding; Embodiment 3: Please refer to Figures 1-13 , based on Embodiment 1 and Embodiment 2, the present invention provides a technical solution: a vibration mechanism 4 is arranged on the outer wall of the long column 311. The vibration mechanism 4 includes a second spring 401. One end of the second spring 401 is fixedly connected to the outer wall of the long column 311, and the other end of the second spring 401 is fixedly connected to a scraping plate 402.

[0022] The scraping plate 402 is a rectangular plate-like structure. One side of the scraping plate 402 is fixedly connected with a sliding plate 403, and the outer wall of the sliding plate 403 is slidably connected with the inner wall of the closing plate 312.

[0023] The sliding plate 403 is a square plate-like structure. The second spring 401 is used to cause the reciprocating left and right vibration of the scraping plate 402. When the machine is working, vibration will occur. During vibration, the counterweight 302 will move slightly left and right, which is transmitted to the closing plate 312 and causes it to move left and right as well. The inner wall of the exhaust port 301 is scraped left and right by the scraping plate 402, and a large amount of hot melt adhesive adhering to the inner wall of the exhaust port 301 due to long-term injection molding is scraped off, preventing the problem that the hot melt adhesive accumulates more and more and causes blockage, affecting the exhaust rate. At the same time, the scraping plate 402 will move left and right with the vibration. The elastic force of the second spring 401 drives the sliding plate 403 to sway left and right on the inner wall of the closing plate 312. Thus, the closing plate 312 also moves left and right and rebounds with the elastic force of the first spring 314, increasing the distance of its left and right back-and-forth swaying, so as to ensure that the inner wall of the exhaust port 301 can be fully scraped by the scraping plate 402, ensuring that the exhaust port 301 has sufficient cleaning ability inside to keep the exhaust port 301 unobstructed and avoid problems of blockage and poor exhaust.

[0024] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A packaging plastic injection molding machine with a function of calibrating an injection mold, comprising an injection molding machine (1), characterized in that: An injection molding pipeline (2) is arranged inside the injection molding machine (1), a first mold (5) and a second mold (6) are arranged inside the injection molding machine (1), and a dynamic exhaust mechanism (3) is arranged on the top of the first mold (5); The dynamic exhaust mechanism (3) comprises: A counterweight block (302), the counterweight block (302) being a square block structure, one end of the counterweight block (302) being connected to a push plate (306) via a push block (305), the push plate (306) being hinged to a long column (311) via a linkage mechanism, the long column (311) being a columnar structure, the counterweight block (302) being used to slide on the top of the first mold (5); A closing plate (312) is a rectangular plate-shaped structure. One side of the counterweight block (302) is connected to a push plate (306) via a fixed slide bar (304). The closing plate (312) is slidably connected to the inner wall of the exhaust port (301). The closing plate (312) is used to open and close the exhaust port (301).

2. A packaging plastic injection molding machine with a calibrated injection mold function according to claim 1, characterized in that: The bottom of the push block (305) is rotatably connected to a rotating ball (303), which is a spherical structure. The rotating ball (303) is used to reduce the friction force of the counterweight (302) when the counterweight (302) moves left and right.

3. A packaging plastic injection molding machine with a calibrated injection mold function according to claim 2, characterized in that: The linkage mechanism comprises a connecting block (307), one end of the connecting block (307) is fixedly connected to one side of the push plate (306), the other end of the connecting block (307) is rotatably connected to a first rotating block (308), an outer wall of the first rotating block (308) is fixedly connected to a push rod (309), one end of the push rod (309) is fixedly connected to a second rotating block (310), and the bottom of the second rotating block (310) is rotatably connected to the top of a long column (311).

4. A packaging plastic injection molding machine with a calibrated injection mold function according to claim 3, characterized in that: The bottom end of the long column (311) is fixedly connected to a closing plate (312), one side of the closing plate (312) is fixedly connected to a first spring (314), one end of the first spring (314) is fixedly connected to the inner wall of the exhaust port (301), and both ends of the fixed slide bar (304) are fixedly connected to stoppers (313).

5. The packaging plastic injection molding machine with the function of calibrating the injection mold according to claim 4, characterized in that: The closing plate (312) is a rectangular plate-shaped structure, and the first rotating block (308) and the second rotating block (310) are circular block-shaped structures.

6. A packaging plastic injection molding machine with a calibrated injection mold function according to claim 5, characterized in that: A vibration mechanism (4) is provided on the outer wall of the long column (311), and the vibration mechanism (4) comprises a second spring (401), one end of the second spring (401) is fixedly connected to the outer wall of the long column (311), and the other end of the second spring (401) is fixedly connected to a scraper (402).

7. A packaging plastic injection molding machine with a function of calibrating the injection mold according to claim 6, characterized in that: The scraper (402) is a rectangular plate-shaped structure, and a slide plate (403) is fixedly connected to one side of the scraper (402), and the outer wall of the slide plate (403) is slidably connected to the inner wall of the closing plate (312).

8. The packaging plastic injection molding machine with the function of calibrating the injection mold according to claim 7, characterized in that: The slide plate (403) is a square plate-shaped structure, and the second spring (401) is used to cause the scraper (402) to vibrate back and forth left and right.

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