Die for machining retainer

Abstract

The utility model relates to a mould for processing a retainer, which comprises a mould main body, a cavity for forming the retainer is arranged in the mould main body, a glue injection runner for feeding glue is arranged on the mould main body, and the glue injection runner is used for filling the cavity through a glue dispensing port. An exhaust sprue runner is arranged at the opposite position of the dispensing opening and comprises an exhaust runner and a waste cavity, one end of the exhaust runner is communicated with the cavity, the other end of the exhaust runner is communicated with the waste cavity, and a first exhaust groove is formed in the other side, opposite to the exhaust runner, of the waste cavity; one end of the first exhaust groove is communicated with the waste cavity, the other end of the first exhaust groove is communicated with the outside, the exhaust flow channel is downwards and obliquely arranged, the inner diameter of the exhaust flow channel is gradually reduced from the upper end to the lower end, and an ejector rod used for ejecting waste in the waste cavity is arranged at the bottom of the waste cavity. According to the technical scheme, the exhaust convex hull does not need to be machined, the labor cost is saved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold for machining a stop piece. Background Art

[0002] At present, when the stop piece in the prior art is injection-molded, there is an air entrapment problem in the product. Therefore, it is necessary to add an injection exhaust boss to the finished stop piece to solve the air entrapment problem. However, after the injection molding of the finished stop piece is demolded, the exhaust boss still needs to be manually processed and broken off from the finished stop piece, which seriously affects the production efficiency and increases the labor cost. Summary of the Utility Model

[0003] Based on the above problems, the utility model provides a mold for machining a stop piece, which does not need to process an exhaust boss, saves labor costs and improves work efficiency.

[0004] To achieve the above object, the utility model provides the following technical solution: A mold for machining a stop piece, comprising a mold body. A cavity for forming the stop piece is arranged in the mold body. A glue injection runner for injecting glue is arranged on the mold body. The glue injection runner fills the cavity through a dispensing port. An exhaust gate runner is arranged at a relative position of the dispensing port. The exhaust gate runner comprises an exhaust runner and a waste cavity. One end of the exhaust runner is communicated with the cavity, and the other end is communicated with the waste cavity. A first exhaust groove is arranged on the other side of the waste cavity relative to the exhaust runner. One end of the first exhaust groove is communicated with the waste cavity, and the other end is communicated with the outside. The exhaust runner is arranged in a downward inclined manner and its inner diameter gradually decreases from the upper end along the lower end direction. A ejector rod for ejecting the waste in the waste cavity is arranged at the bottom of the waste cavity.

[0005] By adopting the above technical solutions, during the injection molding process of the stopper, the injection molding material flows into the cavity from the dispensing port position through the glue injection runner. By injecting glue through the dispensing port, when demolding, the finished product of the stopper can be automatically separated from the dispensing port without manual cutting operation, saving labor. With the arrangement of the exhaust gate runner, during injection molding, the gas is driven by the injection molding material along the exhaust runner to the waste cavity and discharged to the outside through the first exhaust groove, without forming air entrapment, reducing product defects. The exhaust runner is arranged opposite to the dispensing port, so that the injection molding material continues to flow into the waste cavity from the exhaust runner and converges into waste in the waste cavity, ensuring that defects such as air entrapment only occur in the waste part of the waste cavity and do not affect the molding of the stopper, improving product quality. When the stopper is demolded, the waste in the waste cavity is ejected and demolded by the ejector rod. The inner diameter of the exhaust runner gradually decreases from the upper end along the lower end direction. While improving exhaust, it reduces the contact area between the exhaust runner and the finished product of the stopper, facilitating the automatic separation between the waste and the stopper when the stopper is demolded, eliminating the processing procedure of removing waste and saving labor costs. The exhaust runner is arranged in a downward inclination, with a reasonable structure, making it more convenient for the ejector rod to eject the waste from the waste cavity and further improving the reliability of the structure.

[0006] The present utility model is further provided with: the first exhaust groove includes a first slot and a second slot. The second slot is arranged at the other end of the first slot relative to the waste cavity, and the depth of the first slot is less than the depth of the second slot.

[0007] By adopting the above technical solutions, setting the second slot with a depth greater than that of the first slot can increase the air discharge speed, effectively increase the exhaust volume while greatly reducing the influence of air entrapment, and further improve the reliability of the structure.

[0008] The present utility model is further provided with: second exhaust grooves are respectively arranged on both sides of the first exhaust groove. One end of each second exhaust groove is connected to the waste cavity, and the other end is connected to the outside.

[0009] By adopting the above technical solutions, through the arrangement of the first exhaust groove and the second exhaust grooves, the exhaust efficiency is further improved, the exhaust volume is increased, air entrapment is prevented, meeting the exhaust requirements during the injection molding of the stopper, with fast and smooth exhaust and more stable molding.

[0010] The present utility model is further provided with: the exhaust gate runner further includes an overflow cavity, which is symmetrically arranged on both sides of the waste cavity and is respectively connected to the waste cavity.

[0011] By adopting the above technical solutions, the arrangement of the overflow cavity enables the injection molding material entering the waste cavity to flow evenly along the overflow cavities on both sides of the waste cavity, improving the exhaust effect while preventing air entrapment, increasing the yield of the finished product of the stopper, and further improving the stability of the structure. Description of the Drawings

[0012] Figure 1 It is a structural diagram of an embodiment of the present utility model;

[0013] Figure 2 is Figure 1 an enlarged view of the structure of part A of;

[0014] Figure 3 It is a partial structural cross-sectional view of an embodiment of the present utility model;

[0015] Figure 4 It is a schematic diagram of the structure of the stop member of an embodiment of the present utility model;

[0016] The meanings of the reference numerals in the figure: 1 - mold body, 2 - cavity, 3 - glue injection runner, 4 - exhaust gate runner, 401 - exhaust runner, 402 - waste cavity, 403 - overflow cavity, 5 - first exhaust groove, 501 - first slot, 502 - second slot, 6 - second exhaust groove, 7 - stop member, 8 - ejector rod. Detailed Embodiment

[0017] This specific embodiment is only an interpretation of the present utility model, and it is not a limitation of the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the Patent Law.

[0018] See the appendix Figures 1-4, a mold for manufacturing a stopper disclosed by the utility model, includes a mold body 1. A cavity 2 for forming a stopper 7 is arranged inside the mold body 1. A glue injection runner 3 for injecting glue is arranged on the mold body 1. The glue injection runner 3 fills the cavity 2 through a dispensing port. An exhaust gate runner 4 is arranged at a relative position of the dispensing port. The exhaust gate runner 4 includes an exhaust runner 401 and a waste cavity 402. One end of the exhaust runner 401 is communicated with the cavity 2, and the other end is communicated with the waste cavity 402. A first exhaust groove 5 is arranged on the other side of the waste cavity 402 relative to the exhaust runner 401. One end of the first exhaust groove 5 is communicated with the waste cavity 402, and the other end is communicated with the outside. The exhaust runner 401 is arranged in a downward inclined manner and its inner diameter gradually decreases from the upper end along the lower end direction. A ejector rod 8 for ejecting the waste in the waste cavity 402 is arranged at the bottom of the waste cavity 402. When the stopper 7 is injection-molded, the injection material flows into the cavity 2 from the dispensing port position through the glue injection runner 3. By injecting glue through the dispensing port, when demolding, the finished product of the stopper 7 can be automatically separated from the dispensing port without manual cutting operation, saving labor. The arrangement of the exhaust gate runner 4 makes the gas be driven by the injection material along the exhaust runner 401 to the waste cavity 402 during injection and discharged to the outside through the first exhaust groove 5, without forming air entrapment, reducing product defects. The exhaust runner 401 is arranged opposite to the dispensing port, so that the injection material continues to flow into the waste cavity 402 from the exhaust runner 401 and accumulates into waste in the waste cavity 402, making the defects such as air entrapment only occur in the waste part of the waste cavity 402 and not affecting the forming of the stopper 7, improving product quality. When the stopper 7 is demolded, the waste in the waste cavity 402 is ejected and demolded by the ejector rod 8. The inner diameter of the exhaust runner 401 gradually decreases from the upper end along the lower end direction. While improving exhaust, it reduces the contact area between the exhaust runner 401 and the finished product of the stopper 7, promoting the automatic separation between the waste and the stopper 7 when the stopper 7 is demolded, eliminating the processing procedure of removing waste and saving labor costs. The exhaust runner 401 is arranged in a downward inclined manner, with a reasonable structure, which is more convenient for the ejector rod 8 to eject the waste from the waste cavity 402, further improving the reliability of the structure.

[0019] In this embodiment, it is further set that: the first exhaust groove 5 includes a first slot 501 and a second slot 502. The second slot 502 is arranged at the other end of the first slot 501 relative to the waste cavity 402. The depth of the first slot 501 is less than the depth of the second slot 502. By setting the second slot 502 with a depth greater than that of the first slot 501, the exhaust speed of air can be increased. While effectively increasing the exhaust volume, the influence of air entrapment is greatly reduced, further improving the reliability of the structure.

[0020] In this embodiment, it is further provided that second exhaust grooves 6 are respectively arranged on both sides of the first exhaust groove 5. One end of each second exhaust groove 6 is communicated with the waste material cavity 402, and the other end is communicated with the outside. Through the arrangement of the first exhaust groove 5 and the second exhaust grooves 6, the exhaust efficiency is further improved, the exhaust volume is increased, the phenomenon of air entrapment is prevented, the exhaust requirement during the injection molding of the stopper 7 is met, the exhaust is rapid and smooth, and the molding is more stable.

[0021] In this embodiment, it is further provided that the exhaust gate runner 4 further includes overflow cavities 403. The overflow cavities 403 are symmetrically arranged on both sides of the waste material cavity 402 and are respectively communicated with the waste material cavity 402. The arrangement of the overflow cavities 403 enables the injection molding material entering the waste material cavity 402 to flow evenly along the directions of the overflow cavities 403 on both sides of the waste material cavity 402. While improving the exhaust effect, the phenomenon of air entrapment is prevented, the yield rate of the stopper 7 is increased, and the stability of the structure is further improved.

[0022] The above are only the preferred embodiments of this embodiment. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and modifications can be made. These improvements and modifications made under the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A mold for processing a stopper, comprising a mold body, a cavity for molding the stopper is arranged in the mold body, a glue injection channel for injecting glue is arranged on the mold body, and the glue injection channel fills the cavity through a glue dispensing port, characterized in that: The dispensing port is provided with an exhaust gate runner at a relative position, and the exhaust gate runner includes an exhaust runner and a waste cavity. One end of the exhaust runner is connected to the mold cavity, and the other end is connected to the waste cavity. The waste cavity is provided with a first exhaust groove on the other side of the exhaust runner, one end of the first exhaust groove is connected to the waste cavity, and the other end is connected to the outside. The exhaust runner is arranged to be inclined downward and its inner diameter gradually decreases from the upper end to the lower end. A push rod for ejecting waste in the waste cavity is arranged at the bottom of the waste cavity.

2. A mold for processing a stopper according to claim 1, characterized in that: The first exhaust groove includes a first groove position and a second groove position. The second groove position is arranged at the other end of the first groove position relative to the waste chamber. The depth of the first groove position is less than the depth of the second groove position.

3. A mold for processing a stopper according to claim 1, characterized in that: Second exhaust grooves are respectively arranged on both sides of the first exhaust groove, one end of the second exhaust groove is connected to the waste chamber, and the other end of the second exhaust groove is connected to the outside.

4. A mold for processing a stopper according to claim 1, characterized in that: The exhaust gate runner also includes an overflow cavity, which is symmetrically arranged on both sides of the waste cavity and is respectively connected to the waste cavity.

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