Mold pressing mold

Abstract

The embodiment of the utility model relates to a mold pressing mold which comprises a mold frame, an upper mold and a lower mold, the lower mold is fixed to the mold frame, a lower mold cavity is formed for a female mold, the upper mold is a male mold, a mold pressing part is placed on the lower mold, the upper mold moves downwards to be buckled with the lower mold, the end of the upper mold extends into the lower mold cavity, and the mold pressing part can be subjected to mold pressing to be in a preset shape. The mould pressing mould further comprises a punching assembly, and the punching assembly is arranged around the lower mould and installed on the mould frame. The through hole is formed in the side wall of the lower die cavity, the punching assembly comprises the cutter, the cutter can penetrate through the through hole to stretch into the lower die cavity to punch the side wall of the die-pressed part, the side edge punching process of the die-pressed part is simplified, and the machining efficiency is improved. In the punching process, the upper die and the lower die can limit the position of the molded part, the punching assembly is fixed to the die frame, and the accuracy of the punching position is improved. The molded part is punched through the cutter, the situation that burrs appear on the edge of a hole site can be reduced, and the product quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical processing, in particular to a molding die. BACKGROUND

[0002] The molded part of the automobile interior is usually provided with mounting holes, which facilitates the installation of the interior and the frame. The mounting holes are located on the front and side surfaces of the interior to improve the stability of the interior after installation. At present, the mounting holes on the front surface of the interior can be processed by die cutting, and the mounting holes on the side surface can only be processed by water cutting or manual punching. The processing process is complicated and the quality is poor. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application provides a molding die to solve the problem of complicated processing and poor quality of the mounting holes on the side surface of the automobile interior.

[0004] The present application relates to a molding die, which comprises:

[0005] an upper die and a lower die, wherein the upper die is a convex die and the lower die is a concave die;

[0006] a die frame, wherein the lower die is fixed to the die frame;

[0007] a punching assembly, wherein the punching assembly is arranged around the lower die and is installed on the die frame;

[0008] wherein the lower die comprises a lower die cavity, the side wall of the lower die cavity is provided with a through hole, and the punching assembly comprises a cutter which can extend into the lower die cavity through the through hole.

[0009] In a possible embodiment, the punching assembly further comprises a hydraulic cylinder and a piston, one end of the piston is located in the hydraulic cylinder, and the other end of the piston is connected with the cutter.

[0010] In a possible embodiment, the hydraulic cylinder comprises a first liquid inlet and a second liquid inlet, and along the movement direction of the piston, the first liquid inlet and the second liquid inlet are respectively located on both sides of the one end of the piston located in the hydraulic cylinder.

[0011] In a possible embodiment, the punching assembly comprises a solenoid valve, and the first liquid inlet and the second liquid inlet are connected with the solenoid valve to control the opening and closing of the first liquid inlet and the second liquid inlet.

[0012] In a possible embodiment, the die frame comprises a plurality of mounting grooves, and the hydraulic cylinder is installed in the mounting grooves.

[0013] In one possible embodiment, the punching assembly includes a connecting rod, one end of which is connected to the piston and the other end of which is detachably connected to the cutting tool.

[0014] In one possible embodiment, the mold frame includes a guide located between the hydraulic cylinder and the lower mold; the connecting rod passes through the guide.

[0015] In one possible embodiment, the guide includes a guide hole, the connecting rod is located within the guide hole, and is movable along the guide hole.

[0016] In one possible embodiment, the piston has a connecting portion at one end protruding from the hydraulic cylinder, and the connecting rod includes a connecting groove, with the connecting portion installed within the connecting groove.

[0017] In one possible embodiment, the connecting portion includes a first segment, a second segment, and a third segment, wherein the cross-sectional areas of the first segment and the third segment are both larger than the cross-sectional area of ​​the second segment; the connecting groove includes a first cavity and a second cavity, the first cavity and the second cavity are in communication, and the width of the first cavity is greater than the width of the second cavity, the first segment is located in the first cavity, and the second segment is located in the second cavity.

[0018] This application relates to a molding die, including a mold base, an upper mold, and a lower mold. The lower mold is fixed to the mold base and is a concave mold with a lower cavity. The upper mold is a convex mold. A molded part is placed on the lower mold, and the upper mold moves downward to engage with the lower mold. The end of the upper mold extends into the lower cavity, enabling the molded part to be molded into a preset shape. The molding die also includes a punching assembly, which is arranged around the lower mold and mounted on the mold base. The side wall of the lower cavity has a through hole. The punching assembly includes a cutting tool that can pass through the through hole and extend into the lower cavity to punch a hole in the side wall of the molded part, simplifying the side punching process and improving processing efficiency. During punching, the upper and lower molds can restrict the position of the molded part, and the punching assembly fixed to the mold base improves the accuracy of the punching position. Using a cutting tool to punch the molded part reduces the occurrence of burrs at the hole edges, thereby improving product quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the molding die provided in the embodiments of this application;

[0021] Figure 2 This is a schematic diagram of the structure of the lower die and punching assembly provided in the embodiments of this application;

[0022] Figure 3 A cross-sectional view of the lower die and punching assembly provided in an embodiment of this application;

[0023] Figure 4 This is a partial cross-sectional view of the molding die provided in the embodiments of this application when it is not punched;

[0024] Figure 5 This is a partial cross-sectional view of the die being punched according to an embodiment of this application;

[0025] Figure 6 Hydraulic schematic diagram provided for embodiments of this application;

[0026] Figure 7 This is a partial enlarged view of the location of the punching component in the molding die provided in the embodiments of this application.

[0027] Figure label:

[0028] 1-Upper mold;

[0029] 2-Lower mold;

[0030] 21-Lower mold cavity;

[0031] 22-Through hole;

[0032] 3-Mold frame;

[0033] 31-Mounting slot;

[0034] 32-Guide component;

[0035] 33-First pad;

[0036] 34 - Second pad;

[0037] 4-Punching assembly;

[0038] 41-Cutting tools;

[0039] 42 - Hydraulic cylinder;

[0040] 421 - First liquid inlet;

[0041] 422 - Second liquid inlet;

[0042] 43-Piston;

[0043] 431 - Connecting part;

[0044] 431a - First paragraph;

[0045] 431b - Second paragraph;

[0046] 431c - Third paragraph;

[0047] 44 - Connecting rod;

[0048] 45 - Hydraulic cylinder;

[0049] 46-Filter;

[0050] 47 - Hydraulic pump;

[0051] 48 - Solenoid valve;

[0052] 49 - Overflow valve. Detailed Implementation

[0053] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0054] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0055] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0056] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0057] Automotive interior trim is a molded part, and mounting holes are required on both the front and sides to install it onto the vehicle frame. In existing manufacturing processes, the mounting holes on the sides of the trim are created using either water jetting or manual punching. Water jetting requires removing the molded part from the mold and placing it onto a water jetting die, resulting in low production efficiency. Furthermore, developing new water jetting dies increases costs, and water jetting leaves fuzzy edges on the holes, leading to poor perceived quality. Manual punching requires removing the molded part from the die before punching, which is complex, has a long production cycle, and is inefficient. Manual punching also suffers from poor positioning stability and dimensional instability of the mounting holes. Additionally, manual punching operations pose a safety hazard due to workers risking injury, and can also scratch the product, affecting product quality.

[0058] like Figures 1 to 4 As shown, this application embodiment provides a molding die, including a mold frame 3, an upper mold 1, and a lower mold 2. The lower mold 2 is fixed to the mold frame 3. The upper mold 1 is a punch, and the lower mold 2 is a die and includes a lower mold cavity 21. A molded part is placed on the lower mold 2, and the upper mold 1 moves downward to engage with the lower mold 2. The end of the upper mold 1 extends into the lower mold cavity 21, enabling the molded part to be molded into a preset shape. The molding die also includes a punching assembly 4, which is mounted on the mold frame 3 and arranged around the lower mold 2. A through hole 22 is provided on the side wall of the lower mold cavity 21. The punching assembly 4 includes a cutting tool 41, which can pass through the through hole 22 and extend into the lower mold cavity 21.

[0059] When the upper mold 1 descends to a preset height, it can mold the part into a preset shape. At this time, the part is located in the lower mold cavity 21. The cutter 41 extends into the lower mold cavity 21 through the through hole 22 on the side wall of the part, punching holes in the side wall of the part. This creates mounting holes in the side wall of the part after molding. The part does not need to be removed from the mold during punching, simplifying the punching process and improving processing efficiency. The punching assembly 4 is fixed to the mold frame 3, and during punching, the upper mold 1 and the lower mold 2 can restrict the position of the part, improving the accuracy of the punching position. By punching the part with the cutter 41, the occurrence of burrs at the hole edges can be reduced, thereby improving product quality.

[0060] like Figure 4 and Figure 5 As shown, in one possible embodiment, the punching assembly 4 further includes a hydraulic cylinder 42 and a piston 43, with one end of the piston 43 located inside the hydraulic cylinder 42 and the other end connected to the cutting tool 41.

[0061] One end of the piston 43 is located inside the hydraulic cylinder 42, which can divide the hydraulic cylinder 42 into two chambers, front and rear. By adjusting the oil in the two chambers, the piston 43 can be driven to move closer to or further away from the lower mold 2, and the volume of the two chambers changes accordingly. The other end of the piston 43 is connected to the cutter 41. When the piston 43 moves closer to the lower mold 2, the cutter 41 can pass through the through hole 22 and extend into the lower mold cavity 21 to punch a side hole for the molded part.

[0062] like Figure 4 and Figure 5 As shown, in one possible embodiment, the hydraulic cylinder 42 includes a first inlet 421 and a second inlet 422. Along the direction of movement of the piston 43, the first inlet 421 and the second inlet 422 are located on both sides of one end of the piston 43 located in the hydraulic cylinder 42, and communicate with the cavities on both sides of the piston 43.

[0063] Both the first inlet 421 and the second inlet 422 are connected to the hydraulic cylinder, with the first inlet 421 located on the side of the second inlet 422 away from the lower mold 2. The volume of hydraulic fluid on both sides of the piston 43 can be controlled through the first and second inlets 421 and 422, thereby controlling the distance the piston 43 moves. During the punching process, hydraulic fluid is pumped into the hydraulic cylinder 42 through the first inlet 421, pushing the piston 43 towards the lower mold 2. This causes the cutter 41 to pass through the through hole 22 and extend into the lower mold cavity 21 to punch the side of the molded part. Then, hydraulic fluid is pumped into the hydraulic cylinder 42 through the second inlet 422, pushing the piston 43 away from the lower mold 2. This causes the cutter 41 to disengage from the lower mold cavity 21 and return to its initial position, reducing the possibility of affecting demolding.

[0064] like Figure 4 , Figure 5 and Figure 6 As shown, in one possible embodiment, the punching assembly 4 includes a solenoid valve 48, and the first liquid inlet 421 and the second liquid inlet 422 are both connected to the solenoid valve 48 to control the opening and closing of the first liquid inlet 421 and the second liquid inlet 422.

[0065] The hydraulic circuit includes a cylinder 45, a filter 46, a hydraulic pump 47, a solenoid valve 48, a hydraulic cylinder 42, a relief valve 49, and oil passages. The cylinder 45 stores hydraulic fluid and lowers its temperature, reducing the possibility of overheating in the hydraulic circuit. The filter 46 filters impurities and contaminants from the hydraulic fluid, maintaining its cleanliness, making the hydraulic process smoother, and extending the service life of the hydraulic circuit. The hydraulic pump 47, as a power source, converts mechanical energy into hydraulic pressure energy, drawing in and pressurizing the fluid through rotation or reciprocating motion, providing continuous and stable power to the hydraulic circuit. The solenoid valve 48, as a control element, controls the flow direction of the hydraulic fluid. Connected to the first inlet 421 and the second inlet 422 on the hydraulic cylinder 42, the solenoid valve 48 controls the flow direction of the hydraulic fluid through these ports, thereby controlling the movement direction of the piston 43 within the hydraulic cylinder 42. The relief valve 49 is an automatically controlled valve that controls the oil pressure in the hydraulic circuit by adjusting the opening of the relief valve 49. When the pressure in the hydraulic circuit reaches the set value, the relief valve 49 will automatically open to let the excess oil flow back into the oil cylinder 45 to maintain the pressure of the hydraulic circuit.

[0066] The solenoid valve 48 can be a three-position four-way solenoid valve. After the upper mold 1 and the lower mold 2 complete the molding, the hydraulic pump 47 starts, and the electromagnet on one side of the three-position four-way solenoid valve 48 is energized. The oil inlet is connected to the first liquid inlet 421, and the oil outlet is connected to the second liquid inlet 422. This causes the oil on the side of the piston 43 away from the lower mold 2 to gradually increase, pushing the piston 43 to move closer to the lower mold 2. This drives the cutter 41 to extend into the lower mold cavity 21 to complete the punching of the molded part. During this process, the upper mold 1 and the lower mold 2 are in a pressure-holding state for about 5 to 10 seconds to determine the position of the molded part during the punching process, reduce the possibility of displacement or deformation of the molded part, and help improve the processing quality of the molded part. When the pressure holding time ends, the electromagnet on the other side of the three-position four-way battery reversing valve is charged, the oil inlet is connected to the second liquid inlet 422, and the oil outlet is connected to the first liquid inlet 421, so that the oil on the side of the piston 43 close to the lower mold 2 gradually increases, pushing the piston 43 to move away from the lower mold 2, driving the cutter 41 to reset and exit the lower mold cavity 21.

[0067] Multiple punching components 4 are arranged around the lower mold 2, and the hydraulic cylinders 42 in the multiple punching components 4 are connected to the solenoid valves 48. Through the linkage control of the solenoid valves 48, the multiple punching components 4 can be synchronously fed and retracted, which is beneficial to improving the production efficiency of molded parts.

[0068] like Figure 4 and Figure 5 As shown, in one possible embodiment, the mold frame 3 includes a plurality of mounting slots 31, which are spaced apart around the lower mold 2, and the hydraulic cylinders 42 in the plurality of punching assemblies 4 are installed in the mounting slots 31.

[0069] A first pad 33 and a second pad 34 are provided in the mounting groove 31. The first pad 33 is fixed to the bottom wall of the mounting groove 31, and the second pad 34 is fixed to the side wall of the mounting groove 31 away from the lower mold 2. One side of the hydraulic cylinder 42 is connected to the first pad 33, and the other side is connected to the second pad 34. During the punching process, the hydraulic cylinder 42 is subjected to a force in the direction away from the lower mold 2. The side wall of the mounting groove 31 and the second pad 34 can restrict the position of the hydraulic cylinder 42, reducing the possibility of the hydraulic cylinder 42 moving relative to the mold frame 3, making the punching process more stable. During the retraction process, the hydraulic cylinder 42 is subjected to a force in the direction closer to the lower mold 2. The mounting of the hydraulic cylinder 42 on the first pad 33 can restrict the position of the hydraulic cylinder 42, facilitating the retraction of the punching assembly 4.

[0070] like Figure 4 and Figure 5 As shown, in one possible embodiment, the punching assembly 4 includes a connecting rod 44, one end of which is connected to the piston 43 and the other end is detachably connected to the cutter 41.

[0071] The cutting tool 41 is used to punch holes on the side of the molded part. Different molded parts have different requirements for the specifications of the side mounting holes. The cutting tool 41 is detachably mounted on the connecting rod 44, which makes it easy to replace the cutting tool 41 according to the requirements of the molded part, and helps to improve the applicability of the punching assembly 4.

[0072] like Figure 4 and Figure 5 As shown, in one possible embodiment, the mold base 3 includes a guide 32 located between the hydraulic cylinder 42 and the lower mold 2. The guide 32 includes a guide hole, and a connecting rod 44 is located within the guide hole, passes through the guide 32, and is movable along the guide hole.

[0073] The guide hole is aligned with the through hole 22 on the lower mold 2. The connecting rod 44 is located inside the guide hole, which restricts the movement direction of the connecting rod 44 and improves the stability of the movement of the connecting rod 44. This allows the tool 41 to pass through the through hole 22 and extend into the lower mold cavity 21 with the connecting rod 44 to punch holes on the side of the molded part.

[0074] like Figure 6 and Figure 4 Figure 5 Figure 4 Figure 5 Figure 4 Figure 5 Figure 5 Figure 7 As shown, in one possible embodiment, the piston 43 has a connecting portion 431 protruding from the hydraulic cylinder 42. The connecting rod 44 includes a connecting groove, and the connecting portion 431 is installed in the connecting groove. The connecting portion 431 includes a first segment 431a, a second segment 431b, and a third segment 431c. The cross-sectional areas of the first segment 431a and the third segment 431c are larger than the cross-sectional area of ​​the second segment 431b, forming an I-shaped structure. The connecting groove includes a first cavity and a second cavity, which are interconnected, and the width of the first cavity is greater than the width of the second cavity. When the piston 43 is connected to the connecting rod 44, the connecting portion 431 is located in the connecting groove. Specifically, the first segment 431a is located in the first cavity, the second segment 431b is located in the second cavity, and the third segment 431c extends from the side of the second cavity away from the first cavity and abuts against the side wall of the connecting rod 44.

[0075] The cross-sectional area of ​​the second cavity is smaller than that of the first section 431a. After the first section 431a is installed in the first cavity, the side wall of the first section 431a abuts against the side wall of the first cavity along the movement direction of the piston 43, so as to restrict the position of the connecting part 431. When the connecting rod 44 moves with the piston 43, the possibility of the connecting part 431 coming out can be reduced, thus improving the stability of the punching assembly 4 during operation.

[0076] This application relates to a molding die, including a mold frame 3, an upper mold 1, and a lower mold 2. The lower mold 2 is fixed to the mold frame 3 and is a concave mold with a lower mold cavity 21. The upper mold 1 is a convex mold. The molded part is placed on the lower mold 2, and the upper mold 1 moves downward to engage with the lower mold 2. The end of the upper mold 1 extends into the lower mold cavity 21, enabling the molded part to be molded into a preset shape. The molding die also includes a punching assembly 4, which is arranged around the lower mold 2 and installed on the mold frame 3. The side wall of the lower mold cavity 21 is provided with a through hole 22. The punching assembly 4 includes a cutting tool 41, which can pass through the through hole 22 and extend into the lower mold cavity 21 to punch a hole in the side wall of the molded part, simplifying the side punching process and improving processing efficiency. During punching, the upper mold 1 and the lower mold 2 can restrict the position of the molded part, and the punching assembly 4 is fixed to the mold frame 3, improving the accuracy of the punching position. By punching holes in the molded parts with cutting tool 41, the occurrence of burrs at the edge of the holes can be reduced, thereby improving product quality.

Claims

1. A molding die, characterized in that, The molding die includes: The upper mold (1) and the lower mold (2) are provided, wherein the upper mold (1) is a punch and the lower mold (2) is a die. Mold frame (3), the lower mold (2) is fixed to the mold frame (3); A punching assembly (4) is arranged around the lower mold (2) and mounted on the mold frame (3). The lower mold (2) includes a lower mold cavity (21), and the side wall of the lower mold cavity (21) is provided with a through hole (22). The punching assembly (4) includes a cutting tool (41), which can pass through the through hole (22) and extend into the lower mold cavity (21).

2. The molding die according to claim 1, characterized in that, The punching assembly (4) also includes a hydraulic cylinder (42) and a piston (43), one end of which is located inside the hydraulic cylinder (42) and the other end is connected to the cutting tool (41).

3. The molding die according to claim 2, characterized in that, The hydraulic cylinder (42) includes a first inlet (421) and a second inlet (422). Along the movement direction of the piston (43), the first inlet (421) and the second inlet (422) are located on both sides of one end of the piston (43) inside the hydraulic cylinder (42).

4. The molding die according to claim 3, characterized in that, The punching assembly (4) includes a solenoid valve, and the first liquid inlet (421) and the second liquid inlet (422) are both connected to the solenoid valve to control the opening and closing of the first liquid inlet (421) and the second liquid inlet (422).

5. The molding die according to claim 2, characterized in that, The mold frame (3) includes multiple mounting slots (31), and the hydraulic cylinder (42) is installed in the mounting slots (31).

6. The molding die according to claim 2, characterized in that, The punching assembly (4) includes a connecting rod (44), one end of which is connected to the piston (43), and the other end is detachably connected to the cutting tool (41).

7. The molding die according to claim 6, characterized in that, The mold frame (3) includes a guide (32) located between the hydraulic cylinder (42) and the lower mold (2); the connecting rod (44) passes through the guide (32).

8. The molding die according to claim 7, characterized in that, The guide (32) includes a guide hole, and the connecting rod (44) is located in the guide hole and is movable along the guide hole.

9. The molding die according to claim 7, characterized in that, The piston (43) has a connecting part (431) at one end protruding from the hydraulic cylinder (42), and the connecting rod (44) includes a connecting groove, and the connecting part (431) is installed in the connecting groove.

10. The molding die according to claim 9, characterized in that, The connecting part (431) includes a first segment (431a), a second segment (431b) and a third segment (431c), the cross-sectional areas of the first segment (431a) and the third segment (431c) are both larger than the cross-sectional area of ​​the second segment (431b); the connecting groove includes a first cavity and a second cavity, the first cavity is connected to the second cavity, and the width of the first cavity is larger than the width of the second cavity, the first segment (431a) is located in the first cavity, and the second segment (431b) is located in the second cavity.

Images