Lower shell support injection mold

Abstract

The utility model discloses a lower shell support injection mold which comprises a fixing plate, supporting columns are fixedly connected to the four corners of the outer surface of the fixing plate, a left mold is slidably connected to one side of the outer surface of each supporting column, a base plate is movably connected to the right side face of the left mold, and a right mold is movably connected to the right side face of the base plate. According to the lower shell support injection mold, through the arrangement of the base plate, the ejector column and the ejector pin, the base plate can reduce impact force generated during mold closing, so that damage to the mold is reduced, and the wear resistance of the mold is improved; the sliding plate drives the ejector pin to separate the formed product from the forming cavity in the left mold, meanwhile, the base plate is separated from the left mold, under the resistance of the base plate, the product is separated from the right mold, the product demolding function is achieved, the product demolding effect is guaranteed, the adhesion phenomenon during demolding is avoided, and the demolding action of the mold can be smooth.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, and particularly relates to an injection mold for a lower shell bracket. Background Art

[0002] A mold is various molds and tools used in industrial production for injection molding, blow molding, extrusion, die casting, forging, or stamping to obtain the required products. In short, a mold is a tool for making formed articles. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the external shape of the article by changing the physical state of the formed material.

[0003] After retrieval, Chinese Patent Publication (Announcement) No. CN210026107U discloses a constant temperature injection mold, which includes an upper mold base, a lower mold base, a moving mold and a fixed mold paired between the upper mold base and the lower mold base, a moving mold core and a fixed mold core paired between the moving mold and the fixed mold, an ejection mechanism for ejecting the fixed mold core, and a guiding mechanism connecting the moving mold and the fixed mold. It is characterized in that it further includes a heating rod, a heating sheet is arranged in the heating rod, a thimble plate is arranged between the moving mold and the lower mold base, and the heating rod is arranged on the thimble plate and penetrates through the lower mold base, the moving mold, and the moving mold core. The utility model provides a constant temperature injection mold that can heat the molten plastic thoroughly and sufficiently.

[0004] Although the injection mold of the above patent can heat the molten plastic thoroughly, the injection mold usually performs demolding operations through thimbles. The thimble can only eject the product from the molding cavity. Due to the use of the injection process, the product is also prone to sticking to the molding head, and the demolding effect is not good, and the use has certain limitations. Therefore, it is necessary to design an injection mold for a lower shell bracket to solve the above problems. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide an injection mold for a lower shell bracket, which can effectively solve the problems in the background art.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] An injection mold for a lower shell bracket includes a fixed plate. Pillars are fixedly connected to the four corners of the outer surface of the fixed plate. A left mold is slidably connected to one side of the outer surface of the pillar. A spacer is movably connected to the right side surface of the left mold. A right mold is movably connected to the right side surface of the spacer. The right mold is slidably connected to the pillar. A thimble is fixedly connected to the middle of the outer surface of the fixed plate. A slide plate is movably connected to one side of the inner surface of the left mold. A thimble is fixedly connected to the middle of the outer surface of the slide plate. Connecting blocks are fixedly connected to the outer surfaces of the left mold and the spacer. A connecting rod is slidably connected to the inside of the connecting block.

[0008] In order to achieve the effect of facilitating the reset of the slide plate, as an injection mold for the lower shell bracket of the present utility model, guide posts are slidably connected to the four corners of the outer surface of the slide plate. The guide posts are fixedly connected to the left mold, and a first spring is sleeved on the outer surface of the guide posts.

[0009] In order to achieve the effect of facilitating injection molding, as an injection mold for the lower shell bracket of the present utility model, an injection hole is provided inside the right mold, and a molding cavity is provided on the right side surface of the left mold.

[0010] In order to achieve the effect of facilitating alignment, as an injection mold for the lower shell bracket of the present utility model, alignment posts are fixedly connected to the four corners of the outer surface of the right mold, and alignment holes are provided at the four corners of the outer surfaces of the backing plate and the left mold.

[0011] In order to achieve the effect of facilitating adaptation to temperature changes during injection, as an injection mold for the lower shell bracket of the present utility model, a cavity is provided inside the left mold near one side of the molding cavity.

[0012] In order to achieve the effect of facilitating rapid cooling, as an injection mold for the lower shell bracket of the present utility model, a cooling pipe is fixedly connected to the top of the inner side surface of the cavity, and one end of the cooling pipe is fixedly connected to a return pipe.

[0013] In order to achieve the effect of facilitating pressure relief, as an injection mold for the lower shell bracket of the present utility model, a pressure relief channel is provided inside the left mold near one side of the cavity, and pressure relief holes are provided at the edge of the inner bottom wall of the pressure relief channel.

[0014] In order to achieve the effect of automatic pressure relief, as an injection mold for the lower shell bracket of the present utility model, a support rod is fixedly connected to the middle of the inner bottom wall of the pressure relief channel. A second spring is sleeved on the outer surface of the support rod, and one end of the second spring is fixedly connected to a gasket. The gasket is slidably connected to the support rod.

[0015] Compared with the prior art, the present utility model has the following beneficial effects:

[0016] 1. In the present utility model, through the arrangement of the backing plate, the ejector pin and the ejector needle, the backing plate can reduce the impact force generated during mold closing, thereby reducing the damage to the mold and increasing the wear resistance of the mold. When the product is formed, the left mold is moved to the left. Under the action of the ejector pin, the slide plate drives the ejector needle to separate the formed product from the molding cavity inside the left mold. At the same time, the backing plate is separated from the left mold. Under the resistance of the backing plate, the product is separated from the right mold, realizing the demolding function of the product, ensuring the demolding effect of the product, avoiding the phenomenon of adhesion during demolding, and enabling the demolding action of the mold to be smooth.

[0017] 2. In the present utility model, through the settings of the cooling pipe, the return pipe, the pressure relief passage, the second spring and the gasket, low-temperature coolant flows inside the cooling pipe to cool and lower the temperature of the finished product, which helps to improve the demolding speed. The return pipe can make the coolant flow back to the conveying point, so that the coolant inside the cooling pipe can circulate continuously, and the cooling effect is enhanced. When the air pressure inside the pressure relief passage is relatively high, the gasket slides upward on the outer surface of the support rod to open the pressure relief passage and complete the pressure relief work. When the air pressure inside the mold is stable, under the action of the second spring, the gasket slides down and resets to realize the automatic pressure relief function, making the air pressure inside the mold more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view structural schematic diagram of the embodiment of the present utility model;

[0019] Figure 2 is the cross-sectional plane structural schematic diagram of the embodiment of the present utility model;

[0020] Figure 3 is the left mold structural schematic diagram of the embodiment of the present utility model;

[0021] Figure 4 is the internal structural schematic diagram of the left mold of the embodiment of the present utility model;

[0022] Figure 5 is the right mold structural schematic diagram of the embodiment of the present utility model.

[0023] In the figure: 1, fixed plate; 2, pillar; 3, left mold; 4, backing plate; 5, right mold; 6, ejector pin; 7, slide plate; 8, thimble; 9, connecting block; 10, connecting rod; 11, guide pillar; 12, first spring; 13, injection hole; 14, forming cavity; 15, alignment post; 16, alignment hole; 17, cavity; 18, cooling pipe; 19, return pipe; 20, pressure relief passage; 21, pressure relief hole; 22, support rod; 23, second spring; 24, gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment

[0026] As Figures 1-5As shown in the figure, an injection mold for a lower shell bracket includes a fixed plate 1. At the four corners of the outer surface of the fixed plate 1, columns 2 are fixedly connected. On one side of the outer surface of the column 2, a left mold 3 is slidably connected. On the right side surface of the left mold 3, a backing plate 4 is movably connected. On the right side surface of the backing plate 4, a right mold 5 is movably connected. The right mold 5 is slidably connected to the column 2. In the middle of the outer surface of the fixed plate 1, a ejector pin 6 is fixedly connected. On one side of the inner surface of the left mold 3, a slide plate 7 is movably connected. In the middle of the outer surface of the slide plate 7, an ejector pin 8 is fixedly connected. On the outer surfaces of both the left mold 3 and the backing plate 4, connecting blocks 9 are fixedly connected. Inside the connecting block 9, a connecting rod 10 is slidably connected.

[0027] During specific use, through the settings of the backing plate 4, the ejector pin 6, the ejector pin 8, and the connecting rod 10, the left mold 3 and the right mold 5 are slidably connected to the outer surface of the column 2 and are connected to an external horizontal driving mechanism. The column 2 makes the mold more stable during movement, preventing position and angle deviation during movement, improving the accuracy of displacement. The backing plate 4 is arranged between the left mold 3 and the right mold 5, which can reduce the impact force generated during mold closing, thereby reducing mold damage and increasing the wear resistance of the mold. The notch on the surface of the backing plate 4 is smaller than the surface size of the molding cavity 14. When the product is formed, move the left mold 3 to the left. Under the action of the ejector pin 6, the slide plate 7 drives the ejector pin 8 to separate the formed product from the molding cavity 14 inside the left mold 3. At the same time, the backing plate 4 separates from the left mold 3. Under the resistance of the backing plate 4, the product separates from the right mold 5, realizing the demolding function of the product, ensuring the demolding effect of the product, avoiding the phenomenon of adhesion during demolding, and enabling the mold demolding action to be smoother. The connecting rod 10 is slidably connected inside the two groups of connecting blocks 9, making the fitting and resetting of the backing plate 4 and the left mold 3 more accurate and stable, ensuring the quality of the lower shell bracket processing.

[0028] In this embodiment, guide posts 11 are slidably connected to the four corners of the outer surface of the slide plate 7. The guide posts 11 are fixedly connected to the left mold 3, and a first spring 12 is sleeved on the outer surface of the guide posts 11.

[0029] During specific use, through the settings of the guide posts 11 and the first spring 12, when the slide plate 7 moves, the four guide posts 11 limit it, making the movement of the slide plate 7 more accurate and preventing deviation during movement. The first spring 12 can increase the horizontal driving force when the slide plate 7 resets, making the reset of the slide plate 7 more convenient.

[0030] In this embodiment, an injection hole 13 is opened inside the right mold 5, and a molding cavity 14 is opened on the right side surface of the left mold 3.

[0031] During specific use, through the settings of the injection hole 13 and the molding cavity 14, the material is injected into the inside of the molding cavity 14 through the injection hole 13 to ensure product formation.

[0032] In this embodiment, alignment posts 15 are fixedly connected to the four corners of the outer surface of the right mold 5, and alignment holes 16 are provided at the four corners of the outer surfaces of the backing plate 4 and the left mold 3.

[0033] During specific use, due to the arrangement of the alignment posts 15 and the alignment holes 16, when the molds are closed, the alignment posts 15 are inserted into the alignment holes 16 for alignment, preventing the molds from shifting and avoiding mold collision caused by misalignment during mold closing.

[0034] In this embodiment, a cavity 17 is provided on one side of the left mold 3 close to the molding cavity 14.

[0035] During specific use, due to the arrangement of the cavity 17, the cavity 17 facilitates adapting to the thermal expansion and contraction changes of the molding cavity 14, enhancing the adaptability.

[0036] In this embodiment, a cooling pipe 18 is fixedly connected to the top of the inner side surface of the cavity 17, and one end of the cooling pipe 18 is fixedly connected to a return pipe 19.

[0037] During specific use, due to the arrangement of the cooling pipe 18, low-temperature coolant flows inside the cooling pipe 18, which can keep the inside of the cavity 17 at a low temperature state, thereby cooling and lowering the temperature of the finished product, helping to improve the demolding speed, enhancing the work efficiency, and enabling rapid molding. The return pipe 19 can make the coolant flow back to the conveying point, enabling the coolant inside the cooling pipe 18 to circulate continuously, strengthening the cooling effect, and reducing the time for the coolant to get hot.

[0038] In this embodiment, a pressure relief channel 20 is provided on one side of the left mold 3 close to the cavity 17, and pressure relief holes 21 are provided at the edge of the inner bottom wall of the pressure relief channel 20.

[0039] During specific use, due to the arrangement of the pressure relief channel 20 and the pressure relief holes 21, after the mold is injected, the generated heat will form a certain air pressure, causing the air pressure inside the cavity 17 to be discharged into the pressure relief channel 20 through the pressure relief holes 21, with good exhaust effect and improved product quality.

[0040] In this embodiment, a support rod 22 is fixedly connected to the middle of the inner bottom wall of the pressure relief channel 20. A second spring 23 is sleeved on the outer surface of the support rod 22, and one end of the second spring 23 is fixedly connected to a gasket 24, and the gasket 24 is slidably connected to the support rod 22.

[0041] During specific use, through the setting of the second spring 23 and the gasket 24, the second spring 23 is sleeved on the outer surface of the support rod 22, with one end fixed to the inner bottom wall of the pressure relief channel 20 and the other end fixed to the gasket 24. When the air pressure inside the pressure relief channel 20 is relatively high, the gasket 24 slides upward on the outer surface of the support rod 22 to open the pressure relief channel 20 and complete the pressure relief work. When the air pressure inside the mold is stable, under the action of the second spring 23, the gasket 24 slides downward to reset, realizing the automatic pressure relief function and making the air pressure inside the mold more stable.

[0042] Working principle: During use, the left mold 3 and the right mold 5 are closed under the action of an external horizontal driving mechanism. The backing plate 4 reduces the impact force generated during mold closing. The alignment posts 15 are inserted into the alignment holes 16 for alignment to prevent the mold from shifting. Materials are injected into the interior of the molding cavity 14 through the injection holes 13 to ensure product molding. The cavity 17 facilitates adaptation to the thermal expansion and contraction of the molding cavity 14. Low-temperature coolant flows inside the cooling pipe 18 to cool down the finished product, thereby enabling rapid molding. The return pipe 19 allows the coolant to flow back to the delivery point, enabling the coolant inside the cooling pipe 18 to circulate continuously. After the mold is injected, the heat generated forms a certain air pressure, causing the air pressure inside the cavity 17 to be discharged into the interior of the pressure relief channel 20 through the pressure relief holes 21. The gasket 24 slides upward on the outer surface of the support rod 22 to open the pressure relief channel 20 and complete the pressure relief work. When the air pressure inside the mold is stable, under the action of the second spring 23, the gasket 24 slides downward to reset, realizing the automatic pressure relief function. After the product is molded, the left mold 3 is moved to the left. Under the action of the ejector pin 6, the slide plate 7 drives the ejector pin 8 to separate the molded product from the molding cavity 14 inside the left mold 3. At the same time, the backing plate 4 is separated from the left mold 3. Under the resistance of the backing plate 4, the product is separated from the right mold 5, realizing the demolding function of the product, avoiding the phenomenon of adhesion during demolding, and enabling the demolding action of the mold to be smooth.

[0043] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A lower shell bracket injection mold, comprising a fixing plate (1), characterized in that: The four corners of the outer surface of the fixed plate (1) are fixedly connected to pillars (2); one side of the outer surface of the pillar (2) is slidably connected to a left mold (3); the right side of the left mold (3) is movably connected to a pad (4); the right side of the pad (4) is movably connected to a right mold (5); the right mold (5) is slidably connected to the pillar (2); A top column (6) is fixedly connected to the middle of the outer surface of the fixed plate (1), a slide plate (7) is movably connected to one side of the inner side surface of the left mold (3), a top pin (8) is fixedly connected to the middle of the outer surface of the slide plate (7), and a connecting block (9) is fixedly connected to the outer surfaces of the left mold (3) and the pad (4), and a connecting rod (10) is slidably connected to the interior of the connecting block (9).

2. The lower shell bracket injection mold according to claim 1, characterized in that: Guide pillars (11) are slidably connected to the four corners of the outer surface of the slide plate (7), the guide pillars (11) are fixedly connected to the left mold (3), and the outer surface of the guide pillars (11) is sleeved with a first spring (12).

3. The lower shell bracket injection mold according to claim 1, characterized in that: An injection hole (13) is provided inside the right mold (5), and a molding cavity (14) is provided on the right side surface of the left mold (3).

4. The lower shell bracket injection mold according to claim 1, characterized in that: Alignment columns (15) are fixedly connected at the four corners of the outer surface of the right mold (5), and alignment holes (16) are opened at the four corners of the outer surfaces of the pad (4) and the left mold (3).

5. The lower shell bracket injection mold according to claim 3, characterized in that: A cavity (17) is provided on a side of the left mold (3) close to the molding cavity (14).

6. The lower shell bracket injection mold according to claim 5, characterized in that: A cooling pipe (18) is fixedly connected to the top of the inner side surface of the cavity (17), and a return pipe (19) is fixedly connected to one end of the cooling pipe (18).

7. The lower shell bracket injection mold according to claim 5, characterized in that: A pressure relief channel (20) is provided on one side of the left mold (3) close to the cavity (17), and a pressure relief hole (21) is provided at the edge of the inner bottom wall of the pressure relief channel (20).

8. The lower shell bracket injection mold according to claim 7, characterized in that: A support rod (22) is fixedly connected to the middle of the inner bottom wall of the pressure relief channel (20), a second spring (23) is sleeved on the outer surface of the support rod (22), a gasket (24) is fixedly connected to one end of the second spring (23), and the gasket (24) is slidably connected to the support rod (22).

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