Forming mold of SMC injection molding product

Abstract

The utility model discloses a forming mold of an SMC injection molding product, and belongs to the technical field of production of injection molding products. Comprising a pressing die; the forming die is arranged at the bottom of the pressing die, an annular groove A is formed in the top of the forming die, and a boss is fixedly arranged on the inner side of the annular groove A; and the threaded sleeve is arranged on the inner side of the annular groove A and comprises a plurality of arc-shaped threaded plates, and the arc-shaped threaded plates are driven by external force to synchronously move in the radial direction to be away from the boss so as to demold the SMC injection molding product. The problems that when an SMC injection molding product with the thin side wall is produced, the SMC injection molding product is rotationally demolded by driving a movable bottom plate through an overturning motor, the side wall of the SMC injection molding product is in threaded fit with a mold, large twisting force is borne during rotation, the SMC injection molding product is prone to being damaged, and the forming quality of the SMC injection molding product is affected are effectively solved.

Description

Technical Field

[0001] This application relates to the field of injection molding technology, and more specifically, to a molding die for SMC injection molded products. Background Technology

[0002] SMC injection molded products are composite material products formed through a specific process. They are made of unsaturated polyester resin as the matrix, with the addition of glass fiber, fillers and various additives to form sheet molding compound, which is then injected into a mold under heat and pressure.

[0003] In related technologies, for example, the prior art patent with publication number CN222628684U provides an SMC molding die that facilitates demolding. The device provides axial pushing force to the demolding rod and the movable base plate through a lifting push rod, and provides circumferential rotation driving force to the demolding rod and the movable base plate through a flip motor and belt drive. In this way, the movable base plate can drive the SMC injection molded product to rotate and demold.

[0004] While the existing technical solutions described above have solved the problems mentioned in the background, when producing SMC injection molded products with relatively thin sidewalls, the rotating base plate driven by the flip motor is used to rotate and demold the SMC injection molded products. The sidewalls of the SMC injection molded products are threaded with the mold, and they are subjected to a large torsional force during rotation, which can easily damage the SMC injection molded products and affect the molding quality of the SMC injection molded products.

[0005] In view of this, we propose a molding die for SMC injection molded products. Utility Model Content

[0006] The purpose of this application is to provide a molding die for SMC injection molded products, which can effectively solve the problem in the prior art that when producing SMC injection molded products with relatively thin sidewalls, the SMC injection molded products are rotated and demolded by a rotating motor driven by a movable base plate. The sidewalls of the SMC injection molded products are threaded with the mold, and the rotation is subject to a large torsional force, which can easily damage the SMC injection molded products and affect the molding quality of the SMC injection molded products.

[0007] This application provides a molding die for SMC injection molded products, including:

[0008] die;

[0009] A forming mold is located at the bottom of a pressing mold. An annular groove A is provided on the top of the forming mold, and a boss is fixedly provided on the inner side of the annular groove A.

[0010] A threaded sleeve is disposed inside the annular groove A. The threaded sleeve includes several arc-shaped threaded plates. The several arc-shaped threaded plates are driven by external force to move synchronously radially away from the boss to demold the SMC injection molded product.

[0011] As an optional solution to the technical solution of this application, the top of the molding die is provided with an annular groove B outside the annular groove A, and the annular groove B is connected to the annular groove A through multiple openings.

[0012] A sliding plate is fixedly provided on the outer side of the arc-shaped threaded plate. The sliding plate is located on the inner side of the opening and is driven radially by the driving component.

[0013] As an optional solution to the technical solution of this application, the driving component includes an electric push rod, which is fixedly disposed on the outside of the forming mold. A connecting plate is fixedly disposed on the output end of the electric push rod. A straight rack is fixedly disposed on one side of the connecting plate. An arc-shaped rack is meshed on the outside of the straight rack. A rotating disk is fixedly disposed at the bottom of the arc-shaped rack. A plurality of arc-shaped openings are opened on the top of the rotating disk corresponding to the sliding plate. A sliding pin is fixedly disposed at the bottom of the sliding plate. The sliding pin is slidably disposed with the arc-shaped openings.

[0014] The rotating disk is rotatably disposed inside the annular groove B. An arc-shaped groove is formed on one side of the annular groove B. An arc-shaped rack is rotatably disposed inside the arc-shaped groove. A straight groove is formed on the outer side of the arc-shaped groove. The straight rack is slidably disposed inside the straight groove. A cover plate is detachably disposed on the top of the arc-shaped groove and the straight groove.

[0015] As an optional solution to the technical solution of this application, the bottom of the die is provided with several mating plates corresponding to several arc-shaped threaded plates, the mating plates are located between two corresponding sliding plates, the bottom of the die is provided with a pressure plate corresponding to the boss, and the bottom of the die is provided with a mating ring corresponding to the annular groove B.

[0016] As an optional solution to the technical solution of this application, the bottom of the molding die is provided with an installation groove, which is located between the bottom of the boss and the annular groove A and the annular groove B. A heating component is provided inside the installation groove for preheating the sidewalls of the boss and the annular groove A.

[0017] As an optional solution to the technical solution of this application, the heating component includes an annular shell and an arc-shaped shell, which are respectively disposed inside the mounting groove. Heating coils are disposed inside the annular shell and the arc-shaped shell. A mounting plate is fixedly disposed at the bottom of the annular shell and the arc-shaped shell, and the mounting plate is detachably disposed at the bottom of the molding mold.

[0018] As an optional solution to the technical solution of this application, the bottom of the molding die is fixedly provided with a mounting base for connecting with an external SMC injection molding machine, the top of the mounting base is fixedly provided with a guide post, the inner side of the compression mold is fixedly provided with a guide sleeve A, the inner side of the molding die is fixedly provided with a guide sleeve B, and the guide sleeve A and guide sleeve B are slidably disposed on the outer side of the guide post.

[0019] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0020] (1) This application uses a threaded sleeve, which drives multiple arc-shaped threaded plates to move and open through a drive assembly to demold the SMC injection molded product. Therefore, it effectively solves the problem that when producing SMC injection molded products with relatively thin side walls, the SMC injection molded product is rotated and demolded by a rotating motor driven by a movable base plate. The side wall of the SMC injection molded product is threaded with the mold, and it is subjected to a large torsional force during rotation, which can easily damage the SMC injection molded product and affect the molding quality of the SMC injection molded product.

[0021] (2) This application provides a heating component inside the mounting groove of the molding die, and preheats the side wall of the annular groove A and the boss of the molding die by heating coil before the SMC injection molded product is formed, making the material easier to form. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the molding die for an SMC injection molded product disclosed in a preferred embodiment of this application;

[0023] Figure 2 This is a schematic diagram of the assembly structure of the base and the molding die in the molding die of an SMC injection molded product according to a preferred embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the structure of the top of the base in the molding die of an SMC injection molded product disclosed in a preferred embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the heating component in the molding die of an SMC injection molded product disclosed in a preferred embodiment of this application;

[0026] Figure 5 This is a schematic diagram of the assembly of the threaded sleeve and the drive assembly in the molding die of an SMC injection molded product, as disclosed in a preferred embodiment of this application.

[0027] Figure 6 This is a schematic diagram of the compression mold in the molding die of an SMC injection molded product disclosed in a preferred embodiment of this application;

[0028] Figure 7This is a schematic diagram of the bottom structure of the molding die in a preferred embodiment of the SMC injection molded product disclosed in this application;

[0029] Explanation of the labels in the diagram: 1. Press mold; 11. Mating plate; 12. Pressure plate; 13. Mating ring; 14. Guide sleeve A;

[0030] 2. Molding mold; 21. Annular groove A; 22. Boss; 23. Annular groove B; 231. Through port; 24. Arc groove; 25. Straight groove; 26. Cover plate; 27. Mounting groove; 28. Guide sleeve B;

[0031] 3. Threaded sleeve; 31. Arc-shaped threaded plate; 32. Sliding plate; 321. Sliding pin;

[0032] 4. Drive assembly; 41. Electric actuator; 42. Connecting plate; 43. Straight rack; 44. Curved rack; 45. Rotating disk; 451. Curved opening;

[0033] 5. Heating assembly; 51. Annular shell; 52. Arc-shaped shell; 53. Heating coil; 54. Mounting plate;

[0034] 6. Mounting base; 61. Guide post. Detailed Implementation

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] Reference Figure 1 , Figure 3 and Figure 5 This application discloses a molding die for SMC injection molded products, including a pressure mold 1, a molding die 2 at the bottom of the pressure mold 1, an annular groove A21 at the top of the molding die 2, a boss 22 fixedly provided on the inner side of the annular groove A21, and a threaded sleeve 3 provided on the inner side of the annular groove A21. The threaded sleeve 3 includes a plurality of arc-shaped threaded plates 31. The plurality of arc-shaped threaded plates 31 are driven by external force to move radially and synchronously away from the boss 22 to demold the SMC injection molded product.

[0037] The SMC injection molded product is processed by the cooperation of the compression mold 1 and the forming mold 2, so that the SMC injection molded product can be formed between the threaded sleeve 3 and the boss 22.

[0038] After the SMC injection molded product is formed, several arc-shaped threaded plates 31 are driven to move radially by external force, so that the several arc-shaped threaded plates 31 are moved away from the formed SMC injection molded product, thus completing the demolding action.

[0039] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5The top of the molding die 2 has an annular groove B23 on the outside of the annular groove A21. The annular groove B23 is connected to the annular groove A21 through multiple through-holes 231. A sliding plate 32 is fixedly installed on the outside of the arc-shaped threaded plate 31. The sliding plate 32 is located inside the through-hole 231. The sliding plate 32 is driven radially by the driving assembly 4. The driving assembly 4 includes an electric push rod 41, which is fixedly installed on the outside of the molding die 2. A connecting plate 42 is fixedly installed at the output end of the electric push rod 41. A straight rack 43 is fixedly installed on one side of the connecting plate 42. An arc-shaped rack is meshed on the outside of the straight rack 43. 44. A rotating disk 45 is fixedly installed at the bottom of the arc-shaped rack 44. Several arc-shaped openings 451 are opened at the top of the rotating disk 45 corresponding to the sliding plate 32. A sliding pin 321 is fixedly installed at the bottom of the sliding plate 32. The sliding pin 321 is slidably installed with the arc-shaped openings 451. The rotating disk 45 is rotatably installed inside the annular groove B23. An arc-shaped groove 24 is opened on one side of the annular groove B23. The arc-shaped rack 44 is rotatably installed inside the arc-shaped groove 24. A straight groove 25 is opened on the outer side of the arc-shaped groove 24. The straight rack 43 is slidably installed inside the straight groove 25. A cover plate 26 is detachably installed on the top of the arc-shaped groove 24 and the straight groove 25.

[0040] After the SMC injection molded product is formed, the connecting plate 42 is moved by the electric push rod 41, which in turn drives the straight rack 43 to move inside the straight groove 25. The straight rack 43 drives the arc rack 44 to rotate inside the arc groove 24. The arc rack 44 drives the rotating disk 45 connected at the bottom to rotate inside the annular groove B23. This causes several arc-shaped openings 451 to engage with the corresponding sliding pins 321. Under the limitation of the through opening 231, several sliding pins 321 drive the corresponding sliding plates 32 to move radially at the same time. Several sliding plates 32 drive the arc threaded plates 31 to move, causing several arc threaded plates 31 to disengage from the formed SMC injection molded product, completing the demolding action.

[0041] Reference Figure 2 , Figure 3 , Figure 5 and Figure 6 The bottom of the mold 1 is fixedly provided with several mating plates 11 corresponding to several arc-shaped threaded plates 31. The mating plates 11 are located between two corresponding sliding plates 32. The bottom of the mold 1 is fixedly provided with a pressure plate 12 corresponding to the boss 22. The bottom of the mold 1 is fixedly provided with a mating ring 13 corresponding to the annular groove B23.

[0042] During injection molding, several mating plates 11 are fitted between the corresponding two sliding plates 32 to increase the sealing between the two arc-shaped threaded plates 31. The SMC is injection molded by the cooperation of the pressure plate 12 and the boss 22. The mating ring 13 makes the mold 1 and the molding mold 2 fit more tightly.

[0043] Reference Figure 3 , Figure 4 and Figure 7 The bottom of the molding mold 2 is provided with a mounting groove 27, which is located between the bottom of the boss 22 and the annular grooves A21 and B23. A heating component 5 is provided inside the mounting groove 27 for preheating the sidewalls of the boss 22 and the annular groove A21. The heating component 5 includes an annular shell 51 and an arc-shaped shell 52, which are respectively provided inside the mounting groove 27. A heating coil 53 is provided inside the annular shell 51 and the arc-shaped shell 52. A mounting plate 54 is fixedly provided at the bottom of the annular shell 51 and the arc-shaped shell 52. The mounting plate 54 is detachably provided at the bottom of the molding mold 2.

[0044] The annular shell 51 and the arc-shaped shell 52 are fixedly installed on the inner side of the molding mold 2 by the mounting plate 54. The heating coil 53 is installed on the inner side of the boss 22 and between the annular groove A21 and the annular groove B23 by the annular shell 51 and the arc-shaped shell 52, so as to preheat the side walls of the boss 22 and the annular groove A21, which facilitates the subsequent molding work.

[0045] Reference Figure 1 , Figure 2 , Figure 6 and Figure 7 The bottom of the molding die 2 is fixedly provided with a mounting base 6 for connecting with an external SMC injection molding machine. The top of the mounting base 6 is fixedly provided with a guide post 61. The inner side of the mold 1 is fixedly provided with a guide sleeve A14. The inner side of the molding die 2 is fixedly provided with a guide sleeve B28. The guide sleeve A14 and the guide sleeve B28 are slidably provided on the outer side of the guide post 61.

[0046] Guide sleeves A14 and B28 limit the movement of the compression mold 1 and the forming mold 2, allowing them to slide together and thus ensuring the equipment's molding effect on SMC injection molded products.

[0047] In summary, when the molding die for the SMC injection molded product disclosed in this application is used, the SMC injection molded product is processed by the cooperation of the compression mold 1 and the molding die 2, so that the SMC injection molded product can be formed between the threaded sleeve 3 and the boss 22.

[0048] After the SMC injection molded product is formed, the connecting plate 42 is moved by the electric push rod 41, which in turn drives the straight rack 43 to move inside the straight groove 25. The straight rack 43 drives the arc rack 44 to rotate inside the arc groove 24. The arc rack 44 drives the rotating disk 45 connected at the bottom to rotate inside the annular groove B23. This causes several arc-shaped openings 451 to engage with the corresponding sliding pins 321. Under the limitation of the through opening 231, several sliding pins 321 drive the corresponding sliding plates 32 to move radially at the same time. Several sliding plates 32 drive the arc threaded plates 31 to move, causing several arc threaded plates 31 to disengage from the formed SMC injection molded product, completing the demolding action.

Claims

1. A molding die for SMC injection molded products, characterized in that, Include: Compression mold (1); A forming mold (2) is set at the bottom of the pressing mold (1). An annular groove A (21) is opened at the top of the forming mold (2). A boss (22) is fixedly provided on the inner side of the annular groove A (21). A threaded sleeve (3) is provided on the inner side of the annular groove A (21). The threaded sleeve (3) includes several arc-shaped threaded plates (31). The several arc-shaped threaded plates (31) are driven by external force to move radially away from the boss (22) to demold the SMC injection molded product.

2. The molding die for SMC injection molded products according to claim 1, characterized in that: The top of the molding die (2) is provided with an annular groove B (23) on the outside of the annular groove A (21), and the annular groove B (23) is connected to the annular groove A (21) through multiple ports (231). A sliding plate (32) is fixedly provided on the outer side of the arc-shaped threaded plate (31). The sliding plate (32) is located on the inner side of the opening (231). The sliding plate (32) is driven to move radially by the driving assembly (4).

3. The molding die for SMC injection molded products according to claim 2, characterized in that: The drive assembly (4) includes an electric push rod (41), which is fixedly disposed on the outside of the molding die (2). A connecting plate (42) is fixedly disposed at the output end of the electric push rod (41). A straight rack (43) is fixedly disposed on one side of the connecting plate (42). An arc rack (44) is meshed on the outside of the straight rack (43). A rotating disk (45) is fixedly disposed at the bottom of the arc rack (44). A plurality of arc-shaped openings (451) are opened on the top of the rotating disk (45) corresponding to the sliding plate (32). A sliding pin (321) is fixedly disposed at the bottom of the sliding plate (32). The sliding pin (321) slides with the arc-shaped openings (451). The rotating disk (45) is rotatably disposed inside the annular groove B (23). An arc-shaped groove (24) is provided on one side of the annular groove B (23). The arc-shaped rack (44) is rotatably disposed inside the arc-shaped groove (24). A straight groove (25) is provided on the outer side of the arc-shaped groove (24). The straight rack (43) is slidably disposed inside the straight groove (25). A cover plate (26) is detachably disposed on the top of the arc-shaped groove (24) and the straight groove (25).

4. The molding die for SMC injection molded products according to claim 2, characterized in that: The bottom of the die (1) is fixedly provided with several mating plates (11) corresponding to several arc-shaped threaded plates (31). The mating plates (11) are located between two corresponding sliding plates (32). The bottom of the die (1) is fixedly provided with a pressure plate (12) corresponding to a boss (22). The bottom of the die (1) is fixedly provided with a mating ring (13) corresponding to annular groove B (23).

5. The molding die for SMC injection molded products according to claim 2, characterized in that: The bottom of the molding die (2) is provided with an installation groove (27). The installation groove (27) is located between the bottom of the boss (22) and the annular groove A (21) and the annular groove B (23). A heating component (5) is provided inside the installation groove (27) for preheating the sidewalls of the boss (22) and the annular groove A (21).

6. The molding die for SMC injection molded products according to claim 5, characterized in that: The heating assembly (5) includes an annular shell (51) and an arc-shaped shell (52). The annular shell (51) and the arc-shaped shell (52) are respectively disposed on the inner side of the mounting groove (27). Heating coils (53) are disposed on the inner side of both the annular shell (51) and the arc-shaped shell (52). A mounting plate (54) is fixedly disposed at the bottom of the annular shell (51) and the arc-shaped shell (52). The mounting plate (54) is detachably disposed at the bottom of the molding mold (2).

7. The molding die for SMC injection molded products according to claim 1, characterized in that: The bottom of the molding die (2) is fixedly provided with a mounting base (6) for connecting with an external SMC injection molding machine. The top of the mounting base (6) is fixedly provided with a guide post (61). The inner side of the mold (1) is fixedly provided with a guide sleeve A (14). The inner side of the molding die (2) is fixedly provided with a guide sleeve B (28). The guide sleeve A (14) and the guide sleeve B (28) are slidably provided on the outer side of the guide post (61).

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