Forming mold convenient to demold and used for nylon glass fiber composite hinge production

Abstract

The invention discloses a forming mold convenient to demold and used for nylon glass fiber composite hinge production, and relates to the technical field of forming molds. The forming mold comprises a cavity mold plate, the cavity mold plate is provided with a cylindrical groove, the cylindrical groove of the cavity mold plate is provided with an annular groove, the cylindrical groove of the cavity mold plate is slidably provided with a material jacking cylinder, and the top of the outer side of the material jacking cylinder is provided with a convex ring. After the hole-shaped column moves downwards and is inserted into the column groove of the material jacking barrel, the material jacking barrel is pressed to move downwards, the bottom base plate is compressed and deformed, elastic force is generated, meanwhile, through cooperation of the hole-shaped column and the material jacking barrel, a cavity forming space is formed in the forming cavity, and when the mold is opened after forming, the material jacking barrel moves upwards under the elastic force effect of the bottom base plate; the forming hinge is jacked up on one side of the bottom of the forming stirring material, when the forming hinge is opened, one end of the forming hinge is warped up, so that a worker can smoothly take out the formed material through the warped-up state, and demolding is achieved.

Description

Technical Field

[0001] This invention relates to the field of molding die technology, specifically to a molding die for the production of nylon-glass fiber composite hinges that facilitates demolding. Background Technology

[0002] Nylon-glass fiber composite hinges are hinges made with nylon as the matrix and glass fiber as the reinforcement. They combine the excellent properties of nylon with the high strength of glass fiber. The addition of glass fiber significantly improves the tensile and flexural strength of the hinge. Nylon-glass fiber composite hinge molding dies are special injection molding dies designed for the production of nylon-glass fiber composite hinges. They belong to the category of precision injection molds. Their core function is to shape molten glass fiber reinforced nylon raw materials into hinge products with specific dimensions, structures and mechanical properties through injection molding. A locking plate injection molding die, disclosed in CN102922674B, includes an upper mold, a lower mold, a gate, a circular cavity, and a perforating pin. The upper and lower molds, when closed, form a circular cavity with three identical fan-shaped recesses. The perforating pin vertically penetrates the circular cavity. This locking plate injection molding die has a simple structure, is easy to process, and can be used for mass production, saving costs and improving efficiency. The finished locking plate has an attractive appearance, a smooth surface, and a precise structure, meeting consumer needs. However, existing mold ejection components typically use ejector rods to vertically eject the molded material from the cavity. When the material is vertically ejected, it is prone to jamming within the cavity, making it difficult for workers to remove. Furthermore, during cooling, uneven cooling can result in some areas remaining uncured, increasing the difficulty of demolding. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a molding die for producing nylon-glass fiber composite hinges that facilitates demolding, comprising: A fixed mold mechanism and a moving mold mechanism are provided, with the moving mold mechanism located directly above the fixed mold mechanism, and a guide mechanism installed between the fixed mold mechanism and the moving mold mechanism. The fixed mold mechanism includes a fixed base with a slot at the center of its top. A cavity template is fixedly mounted on the top of the fixed base. A forming groove is formed at the center of the top of the cavity template, and cylindrical grooves are symmetrically formed at the forming grooves of the cavity template. Each cylindrical groove of the cavity template has an annular groove. A top ejector cylinder is slidably mounted in each cylindrical groove of the cavity template. A protruding ring is provided on the top of the outer side of the top ejector cylinder. Through the cooperation of the protruding ring of the top ejector cylinder with the annular groove of the cavity template, after the perforated column moves down and inserts into the column groove of the top ejector cylinder, it compresses the top ejector cylinder downwards, causing the bottom pad to compress and deform, generating elastic force. Simultaneously, through the cooperation of the perforated column and the top ejector cylinder, in... A hollow molding space is formed inside the molding cavity. When the mold is opened after molding, the top material cylinder moves upward under the elastic force of the bottom pad plate. The side with the bottom of the molding material is lifted up by the molding hinge. When the molding hinge is opened, one end is tilted up, allowing the worker to easily remove the molded material and achieve demolding. The convex ring of the top material cylinder is adapted to the annular groove of the cavity template, and a column groove is opened at the center of the top of the top material cylinder. The bottom end of the top material cylinder penetrates the cavity template and extends to its bottom. A bottom pad plate is fixedly installed at the bottom of the top material cylinder. The bottom of the bottom pad plate is attached to the inner wall of the fixed seat. An outer baffle is fixedly installed at the top of the cavity template.

[0004] Preferably, the cavity template has a cooling cavity inside. Water inlet and outlet pipes are fixedly installed on both sides of the cavity template, and both are connected to the cooling cavity. An injection pipe is fixedly connected to the outside of the cavity template and is connected to the forming groove of the cavity template. A water guide plate is fixedly installed inside the cooling cavity of the cavity template. The water guide plate is inclined within the cooling cavity and symmetrically installed along the center of the cavity template axis. An arc baffle is fixedly installed at the cooling cavity of the water guide plate, and the arc baffle connects to the water guide plate. In this design, after the cooling water is introduced, it is first blocked by an arc baffle, causing the water to accumulate. Then, it flows evenly inward through the gap at the top of the arc baffle. Subsequently, it is guided and separated by a water guide plate to prevent the newly introduced low-temperature cooling water from directly impacting the inside under the introduction pressure. This would prevent the low-temperature cooling water from flowing evenly in the cooling cavity, resulting in uneven cooling of the composite material. In some areas, the material may not be cured when the mold is opened, affecting the molding quality. The arc baffle is located inside the cooling cavity on the side near the water inlet pipe, and there is a gap between the top of the arc baffle and the inner wall of the cavity template.

[0005] Preferably, the moving mold mechanism includes a pressure plate, a connecting plate fixedly installed at the center of the top of the pressure plate, an outer frame groove opened at the bottom of the pressure plate, the outer frame groove being adapted to an outer baffle. Through the cooperation of the outer frame groove and the outer baffle, during the mold closing process, the outer baffle is inserted into the outer frame groove, forming a tortuous sealing path on the outside of the molded cavity after mold closing. When the molten composite material is injected, it blocks the surrounding area of ​​the molded cavity, restricting material diffusion and preventing a large amount of excess material around the hinge after molding, which would affect the molding effect. A perforated column is fixedly installed at the bottom of the pressure plate, the perforated column is symmetrically installed at the center of the axis of the pressure plate, and the outer side of the perforated column is adapted to the column groove of the top material cylinder. A side filling block is fixedly installed at the bottom of the pressure plate, and the side filling block is symmetrically installed at the center of the axis of the pressure plate. An inner filling block is fixedly installed at the bottom of the pressure plate, the inner filling block is located between the side filling blocks, and the outer sides of both the inner filling block and the side filling block are adapted to the molding groove of the cavity mold.

[0006] Preferably, the guiding mechanism includes a fixed plate and a cylindrical groove plate. The fixed plate is fixedly installed on both sides of the fixed seat, and the cylindrical groove plate is fixedly installed on both sides of the pressing template. Guide columns are fixedly installed on both sides of the top of the fixed plate, and limit blocks are fixedly installed on the top of each guide column. Cylindrical grooves are provided on both sides of the top of the cylindrical groove plate, and an annular groove is opened at the center of the cylindrical groove. An inner rotating cylinder is installed at the annular groove of the cylindrical groove plate. The inner wall of the inner rotating cylinder is an arc surface with a raised center. The arc surface of the inner wall of the inner rotating cylinder cooperates with the guide column. The raised arc surface at the center of the inner wall of the inner rotating cylinder contacts the outer side of the guide column. At the same time, during the movement, the movement is guided and limited, while reducing the contact area and reducing the resistance during movement. Protrusions are symmetrically provided on the outer side of the inner rotating cylinder. The inner rotating cylinder is adapted to the annular groove of the cylindrical groove plate through the protrusions. The inner wall of the inner rotating cylinder contacts the outer side of the guide column.

[0007] Preferably, two grooved rings are fixedly installed on the outer side of the inner rotating cylinder, and the grooved rings are symmetrically installed along the center position of the inner rotating cylinder. Grooves are evenly opened on the outer side of the grooved rings, and an inner rotating column is rotatably installed at the groove of the grooved ring. The outer side of the inner rotating column is in contact with the inner wall of the cylinder groove plate, and annular grooves are opened at both the upper and lower ends of the inner wall of the inner rotating cylinder. An end rotating ring is rotatably installed at the annular groove of the inner rotating cylinder. The inner wall of the end rotating ring is a conical surface. The spiral protrusions evenly arranged on the inclined surface of the end rotating ring contact the outer side of the guide column. After foreign objects adhere to the surface of the guide column, the foreign objects are cleaned by the spiral protrusions. At the same time, the space between the spiral protrusions provides a gap for the foreign objects to fall off. While cleaning stains and foreign objects, it avoids the accumulation of foreign objects. The spiral protrusions are evenly arranged on the conical surface of the end rotating ring, and the side of the spiral protrusions away from the conical surface is in contact with the outer side of the guide column.

[0008] This invention provides a molding die for the production of nylon-glass fiber composite hinges that facilitates demolding. It offers the following advantages: (i) The molding die for producing the nylon-fiberglass composite hinge that facilitates demolding uses the convex ring of the top tube to cooperate with the annular groove of the cavity template. After the hole-shaped column moves down and is inserted into the groove of the top tube, it presses the top tube down, causing the bottom plate to compress and deform, generating elastic force. At the same time, through the cooperation of the hole-shaped column and the top tube, a hollow molding space is formed in the molding cavity. When the mold is opened after molding, the top tube moves up under the elastic force of the bottom plate, lifting the molding hinge on one side of the bottom of the molding material. At the same time, after the molding hinge is opened, one end is tilted up, allowing the worker to easily remove the molded material and achieve demolding.

[0009] (II) The molding die for producing the nylon-fiberglass composite hinge that facilitates demolding uses an arc baffle and a water guide plate. After the cooling water is introduced, it is first blocked by the arc baffle, causing the water to accumulate. Then, it flows evenly inward through the gap at the top of the arc baffle. Subsequently, it is guided and separated by the water guide plate to prevent the newly introduced low-temperature cooling water from directly impacting inward under the introduction pressure. This would prevent the low-temperature cooling water from flowing evenly in the cooling cavity, resulting in uneven cooling of the composite material. In some areas, the material is not cured when the mold is opened, which affects the molding quality.

[0010] (III) The molding die for producing the nylon-fiberglass composite hinge that is easy to demold has an outer frame groove and an outer baffle frame that cooperate with each other. During the mold closing process, the outer baffle frame is inserted into the outer frame groove, forming a tortuous sealing path on the outside of the molded cavity after the mold is closed. When the molten composite material is injected, it blocks the surrounding area of ​​the molded cavity, restricts the diffusion of material, and prevents a large amount of excess material from existing around the hinge after molding, which would affect the molding effect.

[0011] (iv) The molding die for producing the nylon-glass fiber composite hinge that is easy to demold uses the arc surface of the inner wall of the inner rotating cylinder to cooperate with the guide post. The arc surface protruding at the center of the inner wall of the inner rotating cylinder makes the center of the arc surface contact the outer side of the guide post. At the same time, during the movement, the movement is guided and limited, while the contact area is reduced and the resistance during movement is reduced.

[0012] (v) The molding die for producing the nylon-fiberglass composite hinge that is easy to demold has spiral protrusions evenly arranged on the inclined surface of the end ring in contact with the outer side of the guide post. After foreign objects are attached to the surface of the guide post, the spiral protrusions clean the foreign objects. At the same time, the space between the spiral protrusions provides a gap for the foreign objects to fall off, thus cleaning up the stains and foreign objects while avoiding the accumulation of foreign objects. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the mold fixing mechanism and the guiding mechanism of the present invention; Figure 3 This is a schematic diagram of the fixed mold mechanism of the present invention; Figure 4 This is a sectional view of the fixed mold mechanism of the present invention; Figure 5 This is a partial sectional view of the fixed mold mechanism of the present invention; Figure 6 This is a schematic diagram of the moving mold mechanism and the guiding mechanism of the present invention; Figure 7 This is a bottom view of the moving mold mechanism of the present invention; Figure 8 This is a schematic diagram of the guiding mechanism of the present invention; Figure 9 This is a partial sectional view of the guiding mechanism of the present invention; Figure 10 For the present invention Figure 9 An enlarged schematic diagram of structure A in the middle.

[0014] In the diagram: 1. Fixed mold mechanism; 2. Moving mold mechanism; 3. Guiding mechanism; 101. Fixed base; 102. Cavity template; 103. Water inlet pipe; 104. Water outlet pipe; 105. Injection pipe; 106. Outer baffle; 107. Ejector cylinder; 108. Bottom pad; 109. Water guide plate; 110. Arc baffle; 21. Connecting plate; 22. Pressing template; 23. Side filling block; 24. Inner filling block; 25. Hole-shaped column; 26. Outer frame groove; 31. Fixed plate; 32. Guide column; 33. Limiting block; 34. Cylinder groove plate; 35. Inner rotating cylinder; 36. End rotating ring; 37. Column groove ring; 38. Inner rotating column. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] For the first embodiment, please refer to... Figures 1 to 5 The present invention provides a technical solution: A molding die for producing nylon-glass fiber composite hinges that facilitates demolding, comprising: The fixed mold mechanism 1 and the moving mold mechanism 2 are located directly above the fixed mold mechanism 1, and a guide mechanism 3 is installed between the fixed mold mechanism 1 and the moving mold mechanism 2. The fixed mold mechanism 1 includes a fixed base 101. A slot is formed at the center of the top of the fixed base 101. A cavity template 102 is fixedly mounted on the top of the fixed base 101. A forming groove is formed at the center of the top of the cavity template 102. Cylindrical grooves are symmetrically formed at the forming grooves of the cavity template 102. Annular grooves are formed at each of the cylindrical grooves of the cavity template 102. Ejector cylinders 107 are slidably mounted at each of the cylindrical grooves of the cavity template 102. A protruding ring is provided on the top of the outer side of the ejector cylinder 107. The protruding ring of the ejector cylinder 107 matches the annular groove of the cavity template 102. A column groove is formed at the center of the top of the ejector cylinder 107. The moving mold mechanism 2 moves downward under the drive of the forming equipment to close the mold. The cavity template 102 cooperates with the moving mold mechanism 2 to form a hinged forming cavity. Simultaneously, the perforated column 25 in the moving mold mechanism 2 is inserted into the column of the ejector cylinder 107. Inside the groove, during the molding process, the top material cylinder 107 is pressed down, causing the bottom of the top material cylinder 107 to press against the bottom pad plate 108. Utilizing the elastic material characteristics of the bottom pad plate 108, the bottom pad plate 108 is compressed and deformed, causing the top material cylinder 107 to move down and the convex ring of the top material cylinder 107 to fit properly with the annular groove of the cavity template 102. After the material cools and forms, the moving mold mechanism 2 moves up, and the elastic force generated by the compression deformation of the bottom pad plate 108 pushes the top material cylinder 107 up. During the upward movement, the bottom of the forming hinge material is lifted on the side that is off-center. The bottom end of the top material cylinder 107 passes through the cavity template 102 and extends to its bottom. The bottom of the top material cylinder 107 is fixedly installed with the bottom pad plate 108. The bottom of the bottom pad plate 108 is attached to the inner wall of the fixed seat 101. The top of the cavity template 102 is fixedly installed with the outer baffle 106.

[0017] The cavity template 102 has a cooling cavity inside. Water inlet pipes 103 and outlet pipes 104 are fixedly installed on both sides of the cavity template 102, and both are connected to the cooling cavity. An injection pipe 105 is fixedly connected to the outside of the cavity template 102, and is connected to the forming groove of the cavity template 102. A water guide plate 109 is fixedly installed inside the cooling cavity of the cavity template 102. The water guide plate 109 is inclined within the cooling cavity and symmetrically installed along the center of the axis of the cavity template 102. An arc baffle 110 is fixedly installed at the cooling cavity of the water guide plate 109. The molten state is maintained through the connection between the injection pipe 105 and the composite material pipe. The composite material is injected into the molding cavity through the injection pipe 105. After the molding cavity is filled with material, the cooling pipe of the molding equipment connects the inlet pipe 103 and the outlet pipe 104 to inject cooling water into the cooling cavity. During injection, the newly introduced cooling water is first blocked by the arc baffle 110, causing it to accumulate first. Then, it flows evenly inward along the gap at the top of the arc baffle 110. During the flow, the water is guided by the water guide plate 109 to make it flow evenly in the cooling cavity and finally discharged through the outlet pipe 104. The arc baffle 110 is located inside the cooling cavity on the side close to the inlet pipe 103, and there is a gap between the top of the arc baffle 110 and the inner wall of the cavity template 102.

[0018] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 6 to 7 As shown, the moving mold mechanism 2 includes a pressing plate 22. A connecting plate 21 is fixedly installed at the center of the top of the pressing plate 22. An outer frame groove 26 is opened at the bottom of the pressing plate 22, which is adapted to the outer baffle 106. A perforated column 25 is fixedly installed at the bottom of the pressing plate 22. The perforated column 25 is symmetrically installed at the center of the axis of the pressing plate 22, and the outer side of the perforated column 25 is adapted to the column groove of the top material cylinder 107. A side filling block 23 is fixedly installed at the bottom of the pressing plate 22, and the side filling block 23 is symmetrically installed at the center of the axis of the pressing plate 22. Guided by the mold-forming equipment, the mold moves along the guide mechanism 3 to perform mold closing. During the mold closing process, the outer frame groove 26 and the outer baffle 106 are adapted to each other, allowing the outer baffle 106 to be inserted into the outer frame groove 26. At the same time, the inner filling block 24 and the side filling block 23 enter the forming groove of the cavity template 102 to fill the cavity and form a forming cavity. The bottom of the pressure template 22 is fixedly installed with the inner filling block 24, which is located between the side filling blocks 23. The outer sides of the inner filling block 24 and the side filling blocks 23 are adapted to the forming groove of the cavity template 102.

[0019] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figures 8 to 10As shown, the guiding mechanism 3 includes a fixed plate 31 and a grooved plate 34. The fixed plate 31 is fixedly installed on both sides of the fixed base 101, and the grooved plate 34 is fixedly installed on both sides of the pressing template 22. Guide posts 32 are fixedly installed on both sides of the top of the fixed plate 31, and limit blocks 33 are fixedly installed on the top of each guide post 32. Grooves are provided on both sides of the top of the grooved plate 34, and an annular groove is provided at the center of the groove. An inner rotating cylinder 35 is installed at the annular groove of the grooved plate 34. The inner wall of the inner rotating cylinder 35 is... The centrally protruding arc surface is connected to the fixing base 101 and the pressure plate 22 via the fixing plate 31 and the cylindrical groove plate 34 respectively. During the opening and closing of the mold, the cylindrical groove plate 34 is driven to move up and down. At the same time, during the movement, the inner rotating cylinder 35, which is rotatably installed on the inner wall of the cylindrical groove plate 34, contacts the outer side of the guide post 32. The outer side of the inner rotating cylinder 35 is symmetrically provided with protrusions. The inner rotating cylinder 35 is adapted to the annular groove of the cylindrical groove plate 34 through the protrusions. The inner wall of the inner rotating cylinder 35 contacts the outer side of the guide post 32.

[0020] Two grooved rings 37 are fixedly installed on the outer side of the inner rotating cylinder 35. The grooved rings 37 are symmetrically installed along the center position of the inner rotating cylinder 35. Grooves are evenly opened on the outer side of the grooved rings 37. An inner rotating column 38 is rotatably installed at the groove of the grooved ring 37. The outer side of the inner rotating column 38 is in contact with the inner wall of the cylinder groove plate 34. Annular grooves are opened at both the upper and lower ends of the inner wall of the inner rotating cylinder 35. The outer side of the guide column 32 is contacted by the arc surface protruding at the center position of the inner wall of the inner rotating cylinder 35. While providing guidance and limiting, it reduces the contact area. During the up-and-down movement, the spiral protrusions on the inner wall of the end ring 36 contact the outer side of the guide post 32. During the movement, it cleans the dirt and foreign objects on the outer side of the guide post 32. The inner rotating cylinder 35 is rotatably installed with end rings 36 at the annular groove. The inner wall of the end ring 36 is a conical surface, and spiral protrusions are evenly arranged on the conical surface of the end ring 36. The side of the spiral protrusions away from the conical surface is in contact with the outer side of the guide post 32.

[0021] In use, the mold is loaded into the molding equipment, the fixed mold mechanism 1 is fixed in the equipment, the material injection pipe is connected to the cooling pipe and the fixed mold mechanism 1, and the molding equipment drives the moving mold mechanism 2 to move under the restriction of the guide mechanism 3, so as to realize the opening and closing between the fixed mold mechanism 1 and the moving mold mechanism 2, and to carry out the mold opening and closing work.

[0022] In the fixed mold mechanism 1, the moving mold mechanism 2 moves downward under the drive of the molding equipment to close the mold. The cavity template 102 cooperates with the moving mold mechanism 2 to form a hinged forming cavity. At the same time, the hole-shaped post 25 in the moving mold mechanism 2 is inserted into the post groove of the ejector cylinder 107. During the mold closing process, the ejector cylinder 107 is pressed downward, so that the bottom of the ejector cylinder 107 presses against the bottom pad 108. Utilizing the elastic material characteristics of the bottom pad 108, the bottom pad 108 is compressed and deformed, causing the ejector cylinder 107 to move downward and making the convex ring of the ejector cylinder 107 fit properly with the annular groove of the cavity template 102. After the material cools and forms, the moving mold mechanism 2 moves upward, and the elastic force generated by the compression deformation of the bottom pad 108 pushes the ejector cylinder 107 upward. During the upward movement, the bottom of the molding hinge material is lifted off the side that is off-center. The molten composite material is injected into the molding cavity through the injection pipe 105, which is connected to the composite material pipe. After the molding cavity is filled with material, the cooling water is injected into the cooling cavity through the cooling pipe of the molding equipment, which is connected to the water inlet pipe 103 and the water outlet pipe 104. During the injection, the newly introduced cooling water is first blocked by the arc baffle 110, causing it to accumulate. Then, it flows evenly inward along the gap at the top of the arc baffle 110. During the flow, the water is guided by the water guide plate 109, so that it flows evenly in the cooling cavity and is finally discharged through the water outlet pipe 104.

[0023] In the moving mold mechanism 2, under the guidance of the molding equipment, it moves along the restriction of the guide mechanism 3 to perform mold closing work. At the same time, during the mold closing process, through the adaptation of the outer frame groove 26 and the outer stop frame 106, the outer stop frame 106 is inserted into the outer frame groove 26. Meanwhile, the inner filling block 24 and the side filling block 23 enter the molding groove of the cavity template 102 to fill during the mold closing process, forming a molding cavity.

[0024] In the guide mechanism 3, the fixed base 101 and the pressure plate 22 are respectively connected by the fixed plate 31 and the cylindrical groove plate 34. During the opening and closing of the mold, the cylindrical groove plate 34 is driven to move up and down. At the same time, during the movement, the inner rotating cylinder 35, which is rotatably installed on the inner wall of the cylindrical groove plate 34, contacts the outer side of the guide post 32. The arc surface protruding at the center of the inner wall of the inner rotating cylinder 35 contacts the outer side of the guide post 32, providing guidance and restriction while reducing the contact area. At the same time, during the up and down movement, the spiral protrusion on the inner wall of the end rotating ring 36 contacts the outer side of the guide post 32. During the movement, the dirt and foreign objects on the outer side of the guide post 32 are cleaned.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A molding die for producing nylon-glass fiber composite hinges that facilitates demolding, characterized in that, include: A fixed mold mechanism (1) and a moving mold mechanism (2) are provided, wherein the moving mold mechanism (2) is located directly above the fixed mold mechanism (1), and a guide mechanism (3) is installed between the fixed mold mechanism (1) and the moving mold mechanism (2). The fixed mold mechanism (1) includes a fixed base (101). A slot is provided at the center of the top of the fixed base (101), and a cavity template (102) is fixedly installed on the top of the fixed base (101). A forming groove is provided at the center of the top of the cavity template (102), and cylindrical grooves are symmetrically provided at the forming grooves of the cavity template (102). Annular grooves are provided at the cylindrical grooves of the cavity template (102), and top material cylinders (107) are slidably installed at the cylindrical grooves of the cavity template (102). 7) A convex ring is provided on the top of the outer side. The convex ring of the top material cylinder (107) is adapted to the annular groove of the cavity template (102). A column groove is provided at the center of the top of the top material cylinder (107). The bottom end of the top material cylinder (107) passes through the cavity template (102) and extends to its bottom. A bottom pad (108) is fixedly installed on the bottom of the top material cylinder (107). The bottom of the bottom pad (108) is in contact with the inner wall of the fixed seat (101). An outer baffle (106) is fixedly installed on the top of the cavity template (102).

2. The molding die for producing nylon-glass fiber composite hinges that facilitates demolding, as described in claim 1, is characterized in that: The cavity template (102) has a cooling cavity inside. Water inlet pipe (103) and water outlet pipe (104) are fixedly installed on both sides of the cavity template (102). Both water inlet pipe (103) and water outlet pipe (104) are connected to the cooling cavity of the cavity template (102). An injection pipe (105) is fixedly connected to the outside of the cavity template (102). The injection pipe (105) is connected to the forming groove of the cavity template (102).

3. The molding die for producing a nylon-glass fiber composite hinge that facilitates demolding, as described in claim 2, is characterized in that: A water guide plate (109) is fixedly installed in the cooling cavity of the cavity template (102). The water guide plate (109) is inclined in the cooling cavity of the cavity template (102) and is symmetrically installed along the center position of the axis of the cavity template (102).

4. The molding die for producing a nylon-glass fiber composite hinge that facilitates demolding, as described in claim 3, is characterized in that: An arc baffle (110) is fixedly installed in the cooling cavity of the water guide plate (109). The arc baffle (110) is located inside the cooling cavity on the side close to the water inlet pipe (103), and there is a gap between the top of the arc baffle (110) and the inner wall of the cavity template (102).

5. A molding die for producing nylon-glass fiber composite hinges that facilitates demolding, as described in claim 4, characterized in that: The moving mold mechanism (2) includes a pressing plate (22), a connecting plate (21) is fixedly installed at the center of the top of the pressing plate (22), and an outer frame groove (26) is opened at the bottom of the pressing plate (22), which is adapted to the outer baffle (106).

6. The molding die for producing a nylon-glass fiber composite hinge that facilitates demolding, as described in claim 5, is characterized in that: The bottom of the pressing template (22) is fixedly installed with a perforated column (25). The perforated column (25) is symmetrically installed along the center of the axis of the pressing template (22), and the outer side of the perforated column (25) is adapted to the column groove of the top material cylinder (107).

7. A molding die for producing nylon-glass fiber composite hinges that facilitates demolding, as described in claim 6, characterized in that: The bottom of the pressing template (22) is fixedly installed with a side filling block (23), and the side filling block (23) is symmetrically installed along the center position of the axis of the pressing template (22). The bottom of the pressing template (22) is fixedly installed with an inner filling block (24), which is located between the side filling blocks (23). The outer sides of the inner filling block (24) and the side filling blocks (23) are adapted to the forming groove of the cavity template (102).

8. A molding die for producing nylon-glass fiber composite hinges that facilitates demolding, as described in claim 7, characterized in that: The guiding mechanism (3) includes a fixed plate (31) and a cylindrical groove plate (34). The fixed plate (31) is fixedly installed on both sides of the fixed seat (101), and the cylindrical groove plate (34) is fixedly installed on both sides of the pressing template (22). Guide columns (32) are fixedly installed on both sides of the top of the fixed plate (31), and limit blocks (33) are fixedly installed on the top of the guide columns (32).

9. A molding die for producing nylon-glass fiber composite hinges that facilitates demolding, as described in claim 8, characterized in that: Both sides of the top of the cylindrical groove plate (34) are provided with cylindrical grooves, and an annular groove is provided at the center of the cylindrical groove. An inner rotating cylinder (35) is installed at the annular groove of the cylindrical groove plate (34). The inner wall of the inner rotating cylinder (35) is an arc surface with a raised center. The outer side of the inner rotating cylinder (35) is symmetrically provided with protrusions. The inner rotating cylinder (35) is adapted to rotate with the annular groove of the cylindrical groove plate (34) through the protrusions. The inner wall of the inner rotating cylinder (35) is in contact with the outer side of the guide post (32).

10. A molding die for producing nylon-glass fiber composite hinges that facilitates demolding, as described in claim 9, characterized in that: A grooved ring (37) is fixedly installed on the outer side of the inner rotating cylinder (35). There are two grooved rings (37), and they are symmetrically installed along the center position of the inner rotating cylinder (35). Grooves are evenly opened on the outer side of the grooved ring (37), and an inner rotating column (38) is rotatably installed at the groove of the grooved ring (37). The outer side of the inner rotating column (38) is in contact with the inner wall of the cylinder groove plate (34), and annular grooves are opened at both the upper and lower ends of the inner wall of the inner rotating cylinder (35). An end rotating ring (36) is rotatably installed at the annular groove of the inner rotating cylinder (35). The inner wall of the end rotating ring (36) is a conical surface, and a spiral protrusion is evenly provided on the conical surface of the end rotating ring (36). The side of the spiral protrusion away from the conical surface is in contact with the outer side of the guide column (32).

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