Connecting piece injection mold

Abstract

The invention belongs to the technical field of injection molds, and particularly relates to a connecting piece injection mold which comprises a fixed mold assembly, a movable mold assembly, an auxiliary forming mechanism, a driving mechanism, an ejector pin mechanism, an injection port and the like, a fixed mold and a movable mold are provided with mold cavities matched with each other respectively, and the auxiliary forming mechanism assists in forming a product connecting piece through hole under the action of the driving mechanism. According to the ejector pin mechanism, accurate self-adaptive adjustment of ejection force is achieved through a unique pressure sensor, an inflation cavity, an electromagnetic valve and other structures, in the working process, during injection molding, a mold cavity is filled with plastic melt through an injection molding opening and a channel, and during demolding, an ejector pin intelligently adjusts the ejection force according to demolding pressure of different parts of a product. The problems that an existing mold is inaccurate in demolding pressure control and cannot meet the demolding requirements of different products are effectively solved, the product yield is greatly increased, the service life of the mold and the product is prolonged, the production efficiency is remarkably improved, the production cost is reduced, and the mold has important application value and significance in the field of injection molds.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molds, in particular to a connector injection mold. Background Art

[0002] Injection molds are important molding equipment in the plastic processing industry. They are mainly used to make various plastic products from thermoplastics or thermosetting plastics. They can efficiently and accurately produce a large number of products with complex shapes and high dimensional accuracy requirements, such as automotive parts, home appliance housings, etc. The quality of injection molds directly affects the quality, production efficiency and cost of plastic products, and plays a key role in modern manufacturing.

[0003] The existing injection mold is mainly composed of a cavity, a core, a gate, a runner, an ejector mechanism and a guide component. Its working principle is: after the plastic raw material is heated and melted in the injection molding machine, it is injected into the gap between the cavity and the core of the mold through the runner and the gate. When the plastic is cooled and solidified in the cavity, the mold is opened and the ejector mechanism ejects the molded plastic product from the cavity, thus completing an injection molding cycle.

[0004] At present, the injection mold in the prior art has the following disadvantages: the demoulding pressure control lacks precision. When demoulding, the ejector system applies a constant and uniform pressure to the product. However, when the plastic product is formed, the cooling and shrinkage of each part are different, resulting in a large difference in demoulding resistance. This makes it difficult to demould smoothly at the part with large demoulding resistance, while the part with small demoulding resistance will be deformed and cracked due to excessive ejection force, which seriously affects the product yield. Secondly, the existing mold cannot meet the demoulding requirements of different products, because the demoulding pressure of the product changes after each injection molding, and the fixed ejector pressure setting of the existing mold is difficult to adjust the specific demoulding pressure for plastic products with complex shapes and variable structures, which limits the adaptability of the mold to different products, thereby increasing the mold development and production costs. Therefore, a connector injection mold is proposed to address the above problems. Summary of the invention

[0005] In order to make up for the shortcomings of existing injection molds, a connector injection mold is proposed.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a connector injection mold described in the present invention includes a fixed mold component and a movable mold component arranged in cooperation with the fixed mold component, the fixed mold component includes a first base and a fixed mold, and a first mold cavity is opened on the fixed mold; the movable mold component includes a second base and a movable mold, and a second mold cavity matching the first mold cavity is opened on the movable mold, and also includes a sliding auxiliary molding mechanism and a driving mechanism for driving the auxiliary molding mechanism to move, the fixed mold component includes a ejector pin mechanism for discharging, and the fixed mold component also includes an injection port for injection molding.

[0007] Preferably, the base is provided with a first movable groove and a second movable groove which cooperate with the auxiliary molding mechanism, the auxiliary molding mechanism includes a first movable block slidably arranged in the first movable groove, an auxiliary block is clamped on one side of the first movable block, a molding column is arranged on one side of the auxiliary block, a first inclined hole is arranged on the first movable block, the auxiliary molding mechanism also includes a second movable block slidably arranged in the second movable groove, a molding rod is fixedly arranged on one side of the second movable block, and a second inclined hole is arranged on the second movable block.

[0008] Preferably, the driving mechanism includes a first linkage rod fixedly mounted on the second base and matched with the first inclined hole, and also includes a second linkage rod fixedly mounted on the second base and matched with the second inclined hole.

[0009] Preferably, the ejector mechanism comprises a push plate, a cylinder body is fixedly provided on one side of the push plate, an inflation chamber and an active chamber are divided in the cylinder body by a limit ring, an ejector and a piston for discharging are movably provided in the active chamber, one end of the ejector extends into the first mold cavity, a pressure sensor is fixedly provided at one end of the ejector close to the first mold cavity, a spring is connected between the piston and the ejector, a branch pipe is provided on the outside of the cylinder body in communication with the inflation chamber, an electromagnetic valve is provided on the branch pipe, the other end of the branch pipe is connected to a main air pipe, the main air pipe is connected to an external air source, and an air pressure sensor is provided in the inflation chamber.

[0010] Preferably, the first mold cavity includes a product cavity, an auxiliary cavity, and an injection channel communicating with the injection port, and the ejector pin acts on the product cavity, the auxiliary cavity, and the injection channel.

[0011] Preferably, positioning grooves are provided at the four corners of the movable mold, and positioning protrusions matching the positioning grooves are fixedly provided at the four corners of the fixed mold.

[0012] Beneficial effects of the present invention:

[0013] 1. Significant improvement in product quality: The ejector mechanism can achieve precise adaptive adjustment of the ejection force. This feature effectively avoids problems such as product deformation and cracking caused by improper ejection force, greatly improving the product yield rate. This advantage is particularly prominent when producing thin-walled, high-precision plastic products, ensuring product dimensional accuracy and appearance quality, and meeting the manufacturing needs of high-end products.

[0014] 2. Extended mold and product life: Precise ejection force control reduces the impact force on the mold and product during demoulding, which not only reduces mold wear, extends the mold life, reduces the cost and time of mold maintenance and replacement, but also protects the product surface and key structures, avoids damage caused by uneven ejection force, and improves the overall quality and durability of the product;

[0015] 3. Greatly improved production efficiency: The intelligent ejector system of the mold can automatically adapt to the fluctuation of demoulding pressure of different batches of products without frequent manual intervention. In injection molding production, it reduces the time for rework and waste treatment caused by product quality problems, as well as the operation link of manually adjusting the ejector pressure, greatly improving the degree of automation and overall efficiency of production, and enhancing the competitiveness of enterprises in the market;

[0016] 4. The cost reduction effect is obvious: the improvement of product yield reduces the waste of raw materials, the extension of mold service life reduces the purchase and maintenance cost of mold, and the improvement of production efficiency means an increase in output per unit time. The combined effect of these factors effectively reduces the production cost of the enterprise and improves the economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It is a structural cross-sectional view of the whole of the present invention;

[0019] Figure 2 yes Figure 1 A magnified view of the structure at center A;

[0020] Figure 3 It is a first structural stereogram of the fixed mold assembly of the present invention;

[0021] Figure 4 is a second structural stereogram of the fixed mold assembly of the present invention;

[0022] Figure 5 It is a structural plan view of the fixed mold assembly of the present invention;

[0023] Figure 6 It is a structural stereogram of the movable mold assembly of the present invention;

[0024] Figure 7 It is a structural stereogram of the connector of the injection molded product of the present invention;

[0025] Legend:

[0026] 1. Fixed mold assembly; 2. Moving mold assembly; 3. Fixed mold; 4. First mold cavity; 5. Moving mold; 6. Second mold cavity; 7. Auxiliary molding mechanism; 8. Driving mechanism; 9. Ejector mechanism; 10. Injection port; 11. Base; 12. First movable groove; 13. Second movable groove; 14. First moving block; 15. Auxiliary block; 16. Molding column; 17. First oblique hole; 18. Second moving block; 19. Molding rod; 20. Second oblique hole; 21. Second base; 22. First linkage Rod; 23, second linkage rod; 24, push plate; 25, cylinder body; 26, ejector pin; 27, piston; 28, spring; 29, limit ring; 30, branch pipe; 31, inflation chamber; 32, active chamber; 33, solenoid valve; 34, main air pipe; 35, air pressure sensor; 36, pressure sensor; 37, product chamber; 38, auxiliary chamber; 39, injection channel; 40, positioning groove; 41, positioning protrusion; 01, connecting piece; 011, first through hole; 012, second through hole. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Specific examples are given below.

[0029] See also Figure 1-Figure 7The present invention discloses a connector injection mold, comprising a fixed mold assembly 1 and a movable mold assembly 2 matched therewith, wherein the fixed mold assembly 1 comprises a first base 11 and a fixed mold 3, wherein the fixed mold 3 is provided with a first mold cavity 4, wherein the movable mold assembly 2 comprises a second base 21 and a movable mold 5, wherein the movable mold 5 is provided with a second mold cavity 6 matched with the first mold cavity 4, and further comprises a sliding auxiliary molding mechanism 7, and a driving mechanism 8 for driving the auxiliary molding mechanism 7 to move, wherein the fixed mold assembly 1 comprises an ejector mechanism 9 for discharging materials, and wherein the fixed mold assembly 1 further comprises an injection port 10 for injection molding; wherein the base 11 is provided with a first movable groove 12 and a second movable groove 13 matched with the auxiliary molding mechanism 7, wherein the auxiliary molding mechanism 7 is provided with a first movable groove 12 and a second movable groove 13, wherein the auxiliary molding mechanism 7 is provided with a first movable groove 13 and a second movable groove 13, wherein the auxiliary molding mechanism 7 is provided with a first movable groove 12 ... The forming mechanism 7 includes a first moving block 14 slidably arranged in the first movable groove 12, an auxiliary block 15 is clamped on one side of the first moving block 14, a forming column 16 is arranged on one side of the auxiliary block 15, a first inclined hole 17 is opened on the first moving block 14, the auxiliary forming mechanism 7 also includes a second moving block 18 slidably arranged in the second movable groove 13, a forming rod 19 is fixedly arranged on one side of the second moving block 18, and a second inclined hole 20 is opened on the second moving block 18, the driving mechanism 8 includes a first linkage rod 22 fixedly mounted on the second base 21 and matched with the first inclined hole 17, and also includes a second linkage rod 23 fixedly mounted on the second base 21 and matched with the second inclined hole 20;During operation, when the injection mold starts the mold closing process, the movable mold assembly 2 moves smoothly toward the fixed mold assembly 1 based on the power drive of the injection molding machine. During this process, the first linkage rod 22 and the second linkage rod 23 firmly assembled on the second base 21 will move together with the movable mold assembly 2. As the movable mold 5 gradually approaches the fixed mold 3, the first linkage rod 22 slides in the first inclined hole 17 preset on the first moving block 14, and the second linkage rod 23 synchronously slides in the second inclined hole 20 of the second moving block 18. Due to the unique guiding characteristics of the inclined holes, during the continuous advancement of the movable mold 5, the first moving block 14 slides along the first movable groove 12, and the second moving block 18 slides accordingly in the second movable groove 13. This sliding process drives the auxiliary block 15, the molding column 16 and the molding rod 19 to accurately reach the preset molding operation position, providing indispensable assistance for the molding of plastic products, wherein the molding column 16 is inserted into the first mold cavity 4 and the second mold cavity 6 for molding the first through hole 011 in the product connector 01, wherein the molding rod 1 9 is inserted into the second through hole 012 in the first mold cavity 4 and the second mold cavity 6 for molding the product connector 01. When the injection molding process is completed and the mold opening stage is entered, the movable mold assembly 2 moves in the opposite direction according to the injection molding machine instruction. At this time, the first linkage rod 22 and the second linkage rod 23 again rely on the guiding effect of the inclined hole to drive the first moving block 14 and the second moving block 18 to slide in the opposite direction, prompting the auxiliary molding mechanism 7 to accurately reset to the initial state, so that the auxiliary block 15, the molding column 16, and the molding rod 19 leave the first mold cavity 4 and the second mold cavity 6, which is convenient for subsequent product demolding and fully prepared for the next round of injection molding. The automatic control realized by the auxiliary molding mechanism 7 and the driving mechanism 8 greatly reduces the manual operation links, which not only effectively improves the production efficiency, but also significantly enhances the stability and reliability of the production process. In addition, this design greatly improves the versatility of the mold. For products with different structures and shapes, only some parts of the auxiliary molding mechanism 7 need to be properly adjusted to achieve efficient molding, which effectively reduces the manufacturing cost and development cycle of the mold. ;

[0030] Furthermore, the ejector mechanism 9 includes a push plate 24, a cylinder body 25 is fixedly provided on one side of the push plate 24, an air-filling chamber 31 and an active chamber 32 are divided in the cylinder body 25 by a limit ring 29, an ejector pin 26 and a piston 27 for discharging are movably provided in the active chamber 32, one end of the ejector pin 26 extends into the first mold cavity 4, a pressure sensor 36 is fixedly provided on the end of the ejector pin 26 close to the first mold cavity 4, a spring 28 is terminated between the piston 27 and the ejector pin 26, a branch pipe 30 is provided on the outside of the cylinder body 25 at the air-filling chamber 31, an electromagnetic valve 33 is provided on the branch pipe 30, the other end of the branch pipe 30 is connected to a main air pipe 34, the main air pipe 34 is connected to an external air source, and the air-filling chamber 31 is connected to the main air pipe 34. An air pressure sensor 35 is arranged in the cavity 31; during operation, when the product is cooled after the injection molding process is completed, the demoulding process is immediately started. At this time, an external driving device such as a cylinder pushes the push plate 24 to move, and a plurality of ejector pins 26 simultaneously apply thrust to the product. In this process, the pressure sensor 36 equipped at the front end of each ejector pin 26, like a sensitive tactile nerve, captures the pressure changes at the contact point between the ejector pin 26 and the product in real time, and transmits these pressure data to the data processing end of the controller at a speed of milliseconds. At the same time, the air pressure sensor 35 in each cylinder body 25 also continuously monitors the air pressure value inside the inflation cavity 31, and synchronously feeds back the data to the controller. When the pressure sensor 36 of a certain ejector pin 26 detects that the pressure is low, it means that the position The product can be demoulded relatively easily. The controller responds quickly and accurately controls the solenoid valve 33 corresponding to the ejector pin 26 to reduce the gas input from the main air pipe 34 to the air charging chamber 31. As the air pressure in the air charging chamber 31 decreases, the force pushing the piston 27 to move is weakened, and the compression degree of the spring 28 is reduced accordingly, thereby reducing the thrust of the ejector pin 26 on the product accordingly. On the contrary, if the ejector pin 26 pressure sensor 36 senses a large pressure, indicating that the product at this position is difficult to demould, the controller immediately controls the corresponding solenoid valve 33 to increase the air intake of the air charging chamber 31 and increase the air pressure. Under the action of high air pressure, the piston 27 pushes the spring 28 to be further compressed, and the thrust of the ejector pin 26 on the product is significantly enhanced. Through this closed-loop feedback and intelligent control mechanism, each Ejector pin 26 can achieve highly adaptive and precise adjustment according to the actual demoulding pressure of different parts of the product. This intelligent and adaptive ejector pin adjustment system can accurately apply force according to the specific needs of the product, greatly improving the demoulding quality of the product, and fundamentally eliminating common defects such as product deformation and cracking caused by improper ejection force, significantly improving the product yield rate and reducing scrap losses. In addition, the system has strong adaptability and can automatically adapt to the fluctuations in demoulding pressure of different batches of products without frequent manual intervention and adjustment, effectively improving the degree of automation and overall efficiency of production, and reducing unnecessary impact on the mold and product by accurately controlling the ejection force, extending the service life of the mold, and reducing long-term production costs.

[0031] Furthermore, the first mold cavity 4 includes a product cavity 37, an auxiliary cavity 38, and an injection channel 39 communicated with the injection port 10, and the ejector pin 26 acts on the product cavity 37, the auxiliary cavity 38, and the injection channel 39; during operation, in the injection stage, high-temperature and high-pressure plastic melt is injected into the injection channel 39 at a high speed through the injection port 10, and the injection channel 39 serves as a conveying pipe for the melt. With its reasonable design, it guides the plastic melt to be quickly and evenly diverted to the product cavity 37 and the auxiliary cavity 38. During the filling process, the plastic melt gradually fills the entire mold cavity with its own fluidity and injection pressure, completing the preliminary molding of the plastic product. At the same time, a key surface connected to the product but independent of the product is formed in the auxiliary cavity 38 and the injection channel 39. The ejector mechanism 9 starts to work when the injection molding is completed and the demoulding process begins. A number of ejectors 26 do not act directly on the product itself, but on the structure formed together with the product in the auxiliary cavity 38 and the structure formed on the injection channel 39 according to the preset program. In particular, the ejector 26 will avoid the position with a through hole on the product to prevent the through hole from being deformed due to external force during the demoulding process. This ingenious ejection method not only ensures that the product can be smoothly separated from the mold cavity, but also avoids damage to the product surface and key structures. The scientific and reasonable cavity structure design and the precise ejector action mode work closely together, laying a solid foundation for the high-quality production of plastic products.

[0032] Furthermore, the four corners of the movable mold 5 are provided with positioning grooves 40, and the four corners of the fixed mold 3 are fixedly provided with positioning protrusions 41 that match the positioning grooves 40; during operation, when the injection molding machine issues a mold closing command, the movable mold 5 is driven by the mechanical device and moves steadily toward the fixed mold 3. In the process of approaching the fixed mold 3, the positioning protrusions 41 at the four corners of the fixed mold 3 gradually approach the corresponding positioning grooves 40 on the movable mold 5. As the movable mold 5 is further advanced, the positioning protrusions 41 are accurately inserted into the positioning grooves 40, limiting any displacement deviation of the movable mold 5 in the horizontal direction, ensuring that the movable mold 5 and the fixed mold 3 achieve extremely high position accuracy when closing the mold. This precise positioning process enables the first mold cavity 4 and the second mold cavity 6 to achieve perfect matching, creating ideal conditions for the precise molding of plastic products.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] 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 to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A connector injection mold, characterized in that: The invention comprises a fixed mold assembly (1) and a movable mold assembly (2) arranged in cooperation with the fixed mold assembly (1), wherein the fixed mold assembly (1) comprises a first base (11) and a fixed mold (3), wherein the fixed mold (3) is provided with a first mold cavity (4), and the movable mold assembly (2) comprises a second base (21) and a movable mold (5), wherein the movable mold (5) is provided with a second mold cavity (6) which is matched with the first mold cavity (4), and further comprises a sliding auxiliary molding mechanism (7) and a driving mechanism (8) for driving the auxiliary molding mechanism (7) to move, wherein the fixed mold assembly (1) comprises a ejector mechanism (9) for discharging materials, and the fixed mold assembly (1) further comprises an injection port (10) for injection molding.

2. A connector injection mold according to claim 1, characterized in that: The base (11) is provided with a first movable groove (12) and a second movable groove (13) which cooperate with the auxiliary molding mechanism (7); the auxiliary molding mechanism (7) comprises a first movable block (14) slidably arranged in the first movable groove (12); an auxiliary block (15) is clamped on one side of the first movable block (14); a molding column (16) is arranged on one side of the auxiliary block (15); a first inclined hole (17) is arranged on the first movable block (14); the auxiliary molding mechanism (7) further comprises a second movable block (18) slidably arranged in the second movable groove (13); a molding rod (19) is fixedly arranged on one side of the second movable block (18); and a second inclined hole (20) is arranged on the second movable block (18).

3. The connector injection mold according to claim 1, characterized in that: The driving mechanism (8) comprises a first linkage rod (22) fixedly mounted on the second base (21) and matched with the first inclined hole (17), and also comprises a second linkage rod (23) fixedly mounted on the second base (21) and matched with the second inclined hole (20).

4. The connector injection mold according to claim 1, characterized in that: The ejector mechanism (9) comprises a push plate (24), a cylinder body (25) is fixedly arranged on one side of the push plate (24), an air charging chamber (31) and a movable chamber (32) are arranged in the cylinder body (25) through a limit ring (29), an ejector (26) and a piston (27) for discharging materials are movably arranged in the movable chamber (32), one end of the ejector (26) extends into the first mold cavity (4), and one end of the ejector (26) is close to the first mold cavity (4). A pressure sensor (36) is fixedly arranged, a spring (28) is connected between the piston (27) and the ejector pin (26), a branch pipe (30) is arranged outside the cylinder body (25) and is connected to the inflation chamber (31), a solenoid valve (33) is arranged on the branch pipe (30), the other end of the branch pipe (30) is connected to the main air pipe (34), the main air pipe (34) is connected to an external air source, and a pressure sensor (35) is arranged in the inflation chamber (31).

5. The connector injection mold according to claim 1, characterized in that: The first mold cavity (4) comprises a product cavity (37), an auxiliary cavity (38), and an injection channel (39) communicating with the injection port (10), and the ejector pin (26) acts on the product cavity (37), the auxiliary cavity (38), and the injection channel (39).

6. The connector injection mold according to claim 1, characterized in that: The movable mold (5) is provided with positioning grooves (40) at four corners, and the fixed mold (3) is fixed with positioning protrusions (41) matching with the positioning grooves (40) at four corners.

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