Plastic part injection mold capable of rapidly demolding

Abstract

The utility model discloses a plastic part injection mold capable of quickly demolding, which relates to the technical field of injection molds and comprises a demolding base, and the front end of the demolding base is connected with a front jacking device; the front end of the front jacking device is connected with the injection mold; according to the utility model, the gas circuit nozzle on the telescopic fixed plate is connected with an external gas source, high-pressure gas is introduced into the push rod through a gas circuit, and during demolding, a plastic part is further ejected in an auxiliary manner, and the push rod and the spring are matched with the extrusion ring I and the extrusion ring II, so that the plastic part is uniformly stressed in the ejection process; and the problems of deformation, cracking and the like of the plastic part caused by non-uniform demolding force are reduced, high-pressure gas-assisted ejection also avoids scratches on the surface of the plastic part caused by rigid ejection, and the product quality is effectively improved.

Description

Technical Field

[0001] This utility model specifically relates to the field of injection mold technology, and more specifically to a plastic injection mold that allows for rapid demolding. Background Technology

[0002] Injection molds are crucial tools for manufacturing plastic products. The demand for plastic products is enormous in numerous industries, including automotive, electronics, home appliances, and daily necessities. Items such as automotive interior parts, mobile phone casings, appliance casings, and plastic tableware all require injection molds for production. With increasingly fierce market competition, various industries are placing higher demands on the production efficiency and quality of plastic products. Companies need to maximize production efficiency while ensuring product quality in order to reduce costs and enhance market competitiveness.

[0003] Because injection molding materials have strong adhesion in the molten state, they tend to adhere tightly to the mold surface after cooling and solidification, making demolding difficult. For example, some complex-shaped plastic parts with deep holes, undercuts, or other similar structures are even more difficult to demold. Traditional demolding methods, such as relying solely on ejector pins or manual demolding, often require a considerable amount of time. Especially for large or high-precision plastic parts, the demolding process needs to be more careful and time-consuming to avoid damaging the product, which seriously affects production efficiency.

[0004] During the demolding process, uneven or excessive demolding force can easily lead to quality problems such as deformation, cracking, and surface scratches in plastic parts. For example, when demolding manually using tools such as scrapers, it is easy to scratch the product surface, reduce the product's appearance quality and performance, and increase production costs. Utility Model Content

[0005] The purpose of this utility model is to provide a plastic injection mold that can be quickly demolded. By installing the demolding base and the front ejector device on the injection mold, the plastic part can be quickly demolded from the injection mold, thereby improving production efficiency and solving the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A type of injection mold for plastic parts that allows for rapid demolding, including

[0008] A demolding base, the front end of which is connected to a front ejector device; the front end of the front ejector device is connected to an injection mold.

[0009] The demolding base includes a fixed base, with telescopic hydraulic cylinders symmetrically installed at the front end of the fixed base, and a bottom column installed at the middle of the front end. The front end of the telescopic hydraulic cylinder is connected to a fixed plate, and the fixed plate is provided with a circular groove; the front end of the fixed plate is connected to a connecting plate.

[0010] As a further technical solution of this utility model, each of the four corners of the connecting plate is provided with a connecting rod, the end of which is connected to the male template; the front end of the connecting plate is connected to the top column fixing plate, and the interior of the top column fixing plate is symmetrically provided with telescopic rods, the end of which is connected to the telescopic fixing plate.

[0011] As a further technical solution of this utility model, the top column fixing plate is connected to the top column at the middle position; the telescopic fixing plate is provided with air nozzles on the top, bottom, left and right sides, the air nozzles are connected to the air passages, and the air passages are regularly arranged inside the telescopic fixing plate.

[0012] As a further technical solution of this utility model, the front end of the telescopic fixing plate is regularly provided with multiple compression rings, the front end of the compression ring is provided with a spring, the front end of the spring is connected to the compression ring, and the front end of the compression ring is connected to the male template; the compression ring, the spring and the compression ring are provided with push rods inside, and the two ends of the push rods are respectively connected to the telescopic fixing plate and the male template.

[0013] As a further technical solution of this utility model, each of the four corners of the male template is provided with a tie rod, and the male template is slidably connected to the female template through the tie rod. Each side of the male template and the female template is provided with a water outlet, which is connected to a water channel. The water channel is regularly arranged inside the male template and the female template. The front end of the female template is provided with a sprue sleeve.

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

[0015] In this invention, when demolding is performed after injection molding, the telescopic cylinder pulls the fixed plate backward. The connecting plate moves backward under the pull of the fixed plate. The connecting rods at the four corners of the connecting plate drive the male template to move, so that the male template and the female template gradually separate. At the same time, the top column fixing plate also moves backward with the connecting plate. The top column connected in the middle of the top column fixing plate is squeezed towards the bottom column. After squeezing, the top column moves forward, driving the top column fixing plate forward. The telescopic rods symmetrically arranged inside the top column fixing plate also begin to extend. When they extend, they drive the telescopic fixing plate forward. The push rod is inside the second extrusion ring, the spring and the first extrusion ring. It moves forward with the telescopic fixing plate, which plays a role in stabilizing the ejection of the plastic part and preventing the plastic part from shifting or being damaged during the ejection process. In this invention, the air nozzle on the telescopic fixing plate is connected to an external air source, and high-pressure gas is introduced into the push rod through the air passage. During demolding, this further assists in ejecting the plastic part. The push rod and spring, together with extrusion ring one and extrusion ring two, ensure that the plastic part is subjected to uniform force during the ejection process, reducing problems such as deformation and cracking of the plastic part caused by uneven demolding force. The high-pressure gas-assisted ejection also avoids scratches on the surface of the plastic part caused by hard ejection, effectively improving product quality. In this invention, during the injection molding process, the water nozzle on one side of the male and female mold plates is connected to an external cooling water source. The cooling water flows through the water passage, carrying away the heat in the mold and accelerating the cooling and solidification of the plastic part, providing conditions for subsequent rapid demolding. After demolding, during the mold separation process, the cooling system continues to work to reduce the mold temperature and prepare for the next injection molding. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This utility model Figure 1 A bottom view.

[0018] Figure 3 This utility model Figure 2 The right view.

[0019] Figure 4 This utility model Figure 1 A schematic diagram of the split structure.

[0020] Figure 5 This utility model Figure 4 Top view.

[0021] Figure 6 This utility model Figure 4 A magnified view of a portion of the image.

[0022] In the diagram: 1-Demolding base, 2-Front ejector device, 3-Injection mold;

[0023] 11-Fixed base, 12-Telescopic cylinder, 13-Bottom column, 14-Fixing plate, 15-Circular groove;

[0024] 21-Connecting plate, 22-Connecting rod, 23-Top column fixing plate, 24-Telescopic rod, 25-Top column, 26-Telescopic fixing plate, 27-Air nozzle, 28-Air passage, 29-Compression ring one, 210-Spring, 211-Push rod, 212-Compression ring two;

[0025] 31-Male formwork, 32-Female formwork, 33-Tie rod, 34-Water nozzle, 35-Water channel, 36-Gating sleeve. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-6 In this embodiment of the present invention, a plastic injection mold for quick demolding includes a demolding base 1, the front end of which is connected to a front ejector device 2; the front end of the front ejector device 2 is connected to an injection mold 3.

[0028] The demolding base 1 includes a fixed base 11, telescopic cylinders 12 are symmetrically installed at the front end of the fixed base 11, and a bottom column 13 is also installed at the middle position of the front end. The front end of the telescopic cylinder 12 is connected to a fixed plate 14, and a circular groove 15 is provided on the fixed plate 14. The front end of the fixed plate 14 is connected to a connecting plate 21.

[0029] The connecting plate 21 is provided with a connecting rod 22 at each of its four corners, and the end of the connecting rod 22 is connected to the male template 31; the front end of the connecting plate 21 is connected to the top column fixing plate 23, and the top column fixing plate 23 is provided with telescopic rods 24 symmetrically inside, and the end of the telescopic rods 24 is connected to the telescopic fixing plate 26.

[0030] The telescopic fixing plate 26 has a plurality of compression rings 29 regularly arranged at its front end. The front end of the compression ring 29 is provided with a spring 210, the front end of the spring 210 is connected to the compression ring 212, and the front end of the compression ring 212 is connected to the male template 31. The compression ring 212, the spring 210 and the compression ring 29 are provided with push rods 211 inside. The two ends of the push rods 211 are respectively connected to the telescopic fixing plate 26 and the male template 31.

[0031] By adopting the above technical solution, when demolding is performed after injection molding, the telescopic cylinder 12 pulls the fixed plate 14 backward. The connecting plate 21 moves backward under the pull of the fixed plate 14. The connecting rods 22 at the four corners of the connecting plate 21 drive the male template 31 to move, so that the male template 31 and the female template 32 gradually separate. At the same time, the top column fixed plate 23 also moves backward with the connecting plate 21. The top column 25 connected in the middle of the top column fixed plate 23 presses against the bottom column 13. After pressing, the top column 25 moves forward, driving the top column fixed plate 23 to move forward. The telescopic rods 24 symmetrically arranged inside the top column fixed plate 23 also begin to extend. When they extend, they drive the telescopic fixed plate 26 forward. The push rod 211 is inside the second extrusion ring 212, the spring 210 and the first extrusion ring 29. It moves forward with the telescopic fixed plate 26, which plays a role in stabilizing the ejection of the plastic part and preventing the plastic part from shifting or being damaged during the ejection process.

[0032] In this embodiment, the top column fixing plate 23 is connected to the top column 25 at the middle position; the telescopic fixing plate 26 is provided with air nozzles 27 on each of its four sides (upper, lower, left, and right), and the air nozzles 27 are connected to air passages 28, which are regularly arranged inside the telescopic fixing plate 26.

[0033] By adopting the above technical solution, the air nozzle 27 on the telescopic fixing plate 26 is connected to an external air source, and high-pressure gas is introduced into the push rod 211 through the air passage 28. During demolding, it further assists in ejecting the plastic part. The push rod 211 and the spring 210, together with the extrusion ring 29 and the extrusion ring 212, ensure that the plastic part is subjected to uniform force during the ejection process, reducing problems such as deformation and cracking of the plastic part caused by uneven demolding force. The high-pressure gas-assisted ejection also avoids scratches on the surface of the plastic part caused by hard ejection, effectively improving product quality.

[0034] In this embodiment, each of the four corners of the male template 31 is provided with a tie rod 33. The male template 31 is slidably connected to the female template 32 through the tie rods 33. Each side of the male template 31 and the female template 32 is provided with a water outlet 34. The water outlet 34 is connected to a water channel 35. The water channel 35 is regularly arranged inside the male template 31 and the female template 32. The front end of the female template 32 is provided with a sprue sleeve 36.

[0035] By adopting the above technical solution, during the injection molding process, the water nozzles 34 on one side of the male mold plate 31 and the female mold plate 32 are connected to an external cooling water source. The cooling water flows through the water channel 35, carrying away the heat inside the mold and accelerating the cooling and solidification of the plastic parts, thus providing conditions for subsequent rapid demolding. After demolding, during the mold separation process, the cooling system continues to work to reduce the mold temperature and prepare for the next injection molding.

[0036] The working principle of this utility model is as follows: When demolding is performed after injection molding, the telescopic cylinder 12 pulls the fixed plate 14 backward. The connecting plate 21 moves backward under the pull of the fixed plate 14. The connecting rods 22 at the four corners of the connecting plate 21 drive the male template 31 to move, so that the male template 31 and the female template 32 gradually separate. At the same time, the top column fixed plate 23 also moves backward with the connecting plate 21. The top column 25 connected in the middle of the top column fixed plate 23 presses against the bottom column 13. After pressing, the top column 25 moves forward, driving the top column fixed plate 23 to move forward. The telescopic rods 24 symmetrically arranged inside the top column fixed plate 23 also begin to extend. When they extend, they drive the telescopic fixed plate 26 forward. The push rod 211 is inside the second extrusion ring 212, the spring 210 and the first extrusion ring 29. It moves forward with the telescopic fixed plate 26, which plays a role in stabilizing the ejection of the plastic part and preventing the plastic part from shifting or being damaged during the ejection process.

[0037] The air nozzle 27 on the telescopic fixing plate 26 is connected to an external air source. High-pressure gas is introduced into the push rod 211 through the air passage 28. During demolding, it further assists in ejecting the plastic part. The push rod 211 and the spring 210, together with the extrusion ring 1 29 and extrusion ring 212, ensure that the plastic part is subjected to uniform force during the ejection process, reducing problems such as deformation and cracking of the plastic part caused by uneven demolding force. The high-pressure gas-assisted ejection also avoids scratches on the surface of the plastic part caused by hard ejection, effectively improving product quality.

[0038] During the injection molding process, the water nozzles 34 on one side of the male mold plate 31 and the female mold plate 32 are connected to an external cooling water source. The cooling water flows through the water channel 35, carrying away the heat inside the mold and accelerating the cooling and solidification of the plastic part, providing conditions for subsequent rapid demolding. After demolding, during the mold separation process, the cooling system continues to work to reduce the mold temperature and prepare for the next injection molding.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A plastic injection mold for quick demolding, characterized in that: include A demolding base (1) is connected at its front end to a front ejector device (2); the front end of the front ejector device (2) is connected to an injection mold (3); The demolding base (1) includes a fixed base (11), with telescopic cylinders (12) symmetrically installed at the front end of the fixed base (11), and a bottom column (13) installed at the middle position of the front end. The front end of the telescopic cylinder (12) is connected to a fixed plate (14), and a circular groove (15) is provided on the fixed plate (14). The front end of the fixed plate (14) is connected to a connecting plate (21). The connecting plate (21) is provided with connecting rods (22) at each of its four corners. The ends of the connecting rods (22) are connected to the template (31). The front end of the connecting plate (21) is connected to the top column fixing plate (23). The top column fixing plate (23) is provided with telescopic rods (24) symmetrically inside. The ends of the telescopic rods (24) are connected to the telescopic fixing plate (26). The telescopic fixing plate (26) has a plurality of compression rings (29) regularly arranged at its front end. The front end of the compression ring (29) is provided with a spring (210). The front end of the spring (210) is connected to the compression ring (212). The front end of the compression ring (212) is connected to the male template (31). The compression ring (212), the spring (210) and the compression ring (29) are provided with push rods (211). The two ends of the push rods (211) are connected to the telescopic fixing plate (26) and the male template (31) respectively.

2. The plastic part injection mold capable of quick demolding according to claim 1, characterized in that: The top column fixing plate (23) is connected to the top column (25) at the middle position; the telescopic fixing plate (26) is provided with air nozzles (27) on the four sides of the top, bottom, left and right, and the air nozzles (27) are connected to the air passages (28). The air passages (28) are regularly arranged inside the telescopic fixing plate (26).

3. The plastic part injection mold capable of quick demolding according to claim 2, characterized in that: The male template (31) is provided with tie rods (33) at each of its four corners. The male template (31) is slidably connected to the female template (32) through the tie rods (33). A water nozzle (34) is provided on one side of both the male template (31) and the female template (32). The water nozzle (34) is connected to a water channel (35). The water channel (35) is regularly arranged inside the male template (31) and the female template (32). A sprue sleeve (36) is provided at the front end of the female template (32).

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