Plastic part processing and forming die

Abstract

The utility model discloses a plastic part processing and forming die, which relates to the technical field of plastic part processing, and comprises a base, the top of the base is fixedly connected with a lower die, the top of the lower die is inserted with an upper die, and a grading inclined ejector block is pushed by a cylinder to slide rightwards on the inner wall of the base. The long inclined ejector rod is driven by the grading inclined ejector block to separate the upper mold from the plastic part and the lower mold, meanwhile, the short inclined ejector rod is driven by the grading inclined ejector block to obliquely upwards eject the plastic part out of the lower mold, the demolding process is completed, the long inclined ejector rod and the short inclined ejector rod return to the initial positions, and the upper mold and the lower mold are directly aligned and attached. Therefore, the operation of separating the upper mold and the lower mold and ejecting the plastic part out of the mold can be synchronously completed, the upper mold does not need to be separated and detached, the upper mold and the lower mold can be directly aligned after demolding, operation is easy and convenient, and the plastic part machining efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic parts processing technology, and in particular to a plastic parts processing molding die. Background Technology

[0002] A molding die is a mold made according to the shape and structure of a real object. It uses pressing or casting methods to shape the material into a certain shape. It is widely used in the plastics processing industry. The specific uses of molding dies for plastic parts processing include the production of various plastic products, such as daily necessities, appliance housings, and automotive parts. The plastic is heated and melted in the heating barrel at the bottom of the injection molding machine. Then, driven by the screw or plunger of the injection molding machine, it enters the mold cavity through the injection nozzle and the gating system of the mold. The plastic cools and hardens to form the product, which is then demolded to obtain the finished product.

[0003] When demolding existing plastic parts molds, the upper and lower molds need to be separated first, and then the ejector rod of the injection molding machine or the hydraulic cylinder set on the mold is used to push the ejector plate on the mold, and then the plastic part is pushed out of the mold by the ejector plate. This method requires multiple operations, the separated upper mold needs to be placed in a special position, and the upper and lower molds need to be accurately aligned again when used next time, which is quite complicated. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a step-by-step inclined ejector block that drives the long and short inclined ejector rods to move, thus solving the problem of the relatively complicated operation of separating the upper and lower molds before directly ejecting the plastic part from the mold.

[0005] To solve the existing technical problems, the technical solution of this utility model is as follows: A plastic part processing molding mold includes a base, a lower mold fixedly connected to the top of the base, an upper mold inserted into the top of the lower mold, a stripper plate slidably connected to the bottom of the lower mold, a long inclined ejector rod fixedly connected to the outer wall of the upper mold, a short inclined ejector rod fixedly connected to the bottom of the stripper plate, and a graded inclined ejector block slidably connected to the inner wall of the base. The graded inclined ejector block slides to drive the long and short inclined ejector rods to move. The long inclined ejector rod drives the upper mold to separate from the lower mold and the plastic part, and the short inclined ejector rod drives the plastic part to separate from the lower mold.

[0006] Preferably, the graded inclined blocks include two large-slope inclined blocks on both sides and a small-slope inclined block in the middle. The large-slope inclined blocks drive the long inclined rod to move, and the small-slope inclined blocks drive the short inclined rod to move.

[0007] Preferably, the tilt angle of the long inclined ejector is greater than that of the short inclined ejector, so that there is a certain tilt angle when the upper mold separates from the plastic part, which facilitates the separation of the upper mold from the plastic part.

[0008] Preferably, both the long and short inclined push rods are fixedly connected to the bottom of a sliding block, and the top of the graded inclined push block is provided with a sliding groove, the inner wall of the sliding groove being slidably connected to the outer wall of the sliding block.

[0009] Preferably, the top of the base has a limiting groove, the inner wall of which is slidably connected to the outer walls of the long and short inclined rods, to restrict the long and short inclined rods from moving along a specific tilt angle.

[0010] Preferably, a cylinder is fixedly connected to the inner wall of the base, and one end of the cylinder piston rod is fixedly connected to one side of the grading inclined block for driving the movement of the grading inclined block.

[0011] Compared with the prior art, the advantages of this utility model are as follows:

[0012] This invention uses a cylinder to push a tiered inclined ejector block to slide to the right on the inner wall of the base. Driven by the tiered inclined ejector block, the long inclined ejector rod separates the upper mold from the plastic part and the lower mold. At the same time, driven by the tiered inclined ejector block, the short inclined ejector rod pushes the plastic part out of the lower mold at an angle upward, completing the demolding process. Both the long and short inclined ejector rods return to their initial positions, and the upper and lower molds are directly aligned and fitted, ready for the next molding process. This allows for the simultaneous completion of separating the upper and lower molds and ejecting the plastic part from the mold, without the need to separate and remove the upper mold. Furthermore, the upper and lower molds can be directly aligned after demolding, making the operation simple and convenient and effectively improving the efficiency of plastic part processing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the template release structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the upper mold of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the cylinder of this utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the graded inclined block of this utility model;

[0018] Figure 6 This is a schematic diagram of the limiting groove of this utility model.

[0019] In the attached diagram, the following are the reference numerals: 1. Base; 2. Lower mold; 3. Upper mold; 4. Demolding mold; 5. Long inclined ejector rod; 6. Short inclined ejector rod; 7. Graded inclined ejector block; 8. Sliding block; 9. Sliding groove; 10. Limiting groove; 11. Cylinder. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figure 1-6 A plastic part forming mold includes a base 1, which serves as the support structure for the entire mold, ensuring its stability and durability. A lower mold 2 is fixedly connected to the top of the base 1. The lower mold 2 is one of the main parts for plastic part forming; its shape and size determine the final external contour of the plastic part. Through a tight fit with an upper mold 3, the lower mold 2 provides the necessary shape and support for the plastic material during the forming process. The upper mold 3 is inserted into the top of the lower mold 2, and the upper mold 3 cooperates with the lower mold 2 to form the complete shape of the plastic part. During the forming process, the upper mold 3 applies pressure to fill the mold cavity with plastic material, and during cooling... After forming the desired shape, a ejector plate 4 is slidably connected to the bottom of the lower mold 2. The ejector plate 4 plays a crucial role in the demolding process, helping the plastic part separate from the lower mold 2. By slidingly connecting to the bottom of the lower mold 2, the ejector plate 4 ensures that the plastic part can be smoothly demolded after molding, avoiding damage or deformation. A long inclined ejector rod 5 is fixedly connected to the outer wall of the upper mold 3. Driven by the graded inclined ejector block 7, the long inclined ejector rod 5 drives the upper mold 3 to move obliquely upward. The short inclined ejector rod 6, driven by the graded inclined ejector block 7, pushes the ejector plate 4 to move obliquely upward. This inclined ejector demolding can better handle complex structures such as barbs or side holes of plastic products, making these parts... The mold allows for smooth demolding. A short inclined ejector rod 6 is fixedly connected to the bottom of the demolding plate 4, and a tiered inclined ejector block 7 is slidably connected to the inner wall of the base 1. The tiered inclined ejector block 7 drives the movement of the long inclined ejector rod 5 and the short inclined ejector rod 6. By designing different slopes, the tiered inclined ejector block 7 ensures that the long inclined ejector rod 5 and the short inclined ejector rod 6 move in a predetermined order and speed during demolding, thus achieving an efficient and stable demolding process. The tiered inclined ejector block 7 slides, driving the long inclined ejector rod 5 and the short inclined ejector rod 6 to move. The long inclined ejector rod 5 causes the upper mold 3 to separate from the lower mold 2 and the plastic part, while the short inclined ejector rod 6 causes the plastic part to separate from the lower mold 2. The tiered inclined ejector block 7 is then pushed by the cylinder 11. The top block 7 slides to the right on the inner wall of the base 1. Driven by the graded inclined top block 7, the long inclined top rod 5 separates the upper mold 3 from the plastic part and the lower mold 2. At the same time, driven by the graded inclined top block 7, the short inclined top rod 6 pushes the plastic part out of the lower mold 2 at an angle upward, completing the demolding process. Both the long inclined top rod 5 and the short inclined top rod 6 return to their initial positions, and the upper and lower molds 2 are directly aligned and fitted, ready for the next molding process. This allows for the simultaneous completion of the separation of the upper and lower molds 2 and the ejection of the plastic part from the mold, without the need to separate and remove the upper mold 3. Furthermore, after demolding, the upper and lower molds 2 can be directly aligned, making the operation simple and convenient and effectively improving the efficiency of plastic part processing.

[0022] Please see Figure 4-5 The graded inclined ejector block 7 includes two large-slope inclined blocks on both sides and a small-slope inclined block in the middle. The large-slope inclined blocks drive the long inclined ejector rod 5 to move, and the small-slope inclined blocks drive the short inclined ejector rod 6 to move. This makes the upward ejection speed of the long inclined ejector rod 5 from the upper mold 3 greater than the upward ejection speed of the short inclined ejector rod 6. This ensures that while the plastic part is detached from the lower mold 2, the upper mold 3 also detaches from the plastic part. The inclination angle of the long inclined ejector rod 5 is greater than the inclination angle of the short inclined ejector rod 6, so that there is a certain inclination angle when the upper mold 3 separates from the plastic part, which is equivalent to the effect of inclined ejector demolding, making it easier for the upper mold 3 to separate from the plastic part.

[0023] Please see Figure 5 Both the long inclined push rod 5 and the short inclined push rod 6 have a sliding block 8 fixedly connected to their bottoms. The top of the graded inclined push block 7 has a sliding groove 9. The inner wall of the sliding groove 9 is slidably connected to the outer wall of the sliding block 8. The sliding block 8 and the sliding groove 9 are used to ensure the stability of the long inclined push rod 5 and the short inclined push rod 6 during the movement process.

[0024] Please see Figure 6 The top of the base 1 has a limiting groove 10. The inner wall of the limiting groove 10 is slidably connected to the outer walls of the long inclined push rod 5 and the short inclined push rod 6, which is used to limit the movement of the long inclined push rod 5 and the short inclined push rod 6 along a specific tilt angle.

[0025] Please see Figure 4 A cylinder 11 is fixedly connected to the inner wall of the base 1. The cylinder 11 is connected to the external oil circuit, which is the prior art. One end of the piston rod of the cylinder 11 is fixedly connected to one side of the graded inclined ejector block 7 to drive the movement of the graded inclined ejector block 7. By providing stable and controllable power, the cylinder 11 can realize the automated demolding process, improve production efficiency and product quality.

[0026] During use, plastic material is injected into the mold cavity. Under the pressure of the injection molding machine, the plastic material fills the entire cavity and solidifies according to the shape of the mold. After the plastic part cools and solidifies, demolding preparation begins. Cylinder 11 is activated, and its piston rod extends, pushing the graded inclined ejector block 7 to slide to the right on the inner wall of the base 1. The large-slope inclined block of the graded inclined ejector block 7 pushes the long inclined ejector rod 5 upward along the inner wall of the limiting groove 10. The small-slope inclined block pushes the short inclined ejector rod 6 upward. Driven by the graded inclined ejector block 7, the long inclined ejector rod 5 drives the upper mold 3 to move obliquely upward. This process separates the upper mold 3 from the plastic part and the lower mold 2. This step ensures that the plastic part is not obstructed by the upper mold 3 during demolding. At the same time, the short inclined ejector rod 6, driven by the graded inclined ejector block 7, pushes the demolding plate 4 to move obliquely upward. The movement of the demolding plate 4 causes the plastic part to be ejected obliquely upward from the lower mold 2, completing the demolding process. After the plastic part is completely removed from the mold, the piston rod of the cylinder 11 drives the graded inclined ejector block 7 to slide to the left. The long inclined ejector rod 5 and the short inclined ejector rod 6 return to their initial positions, and the upper and lower molds 2 are directly aligned and fitted, ready for the next molding process.

[0027] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic part processing forming die, comprising a base (1), the top of the base (1) is fixedly connected with a lower die (2), the top of the lower die (2) is inserted with an upper die (3), the bottom of the lower die (2) is slidingly connected with an ejection plate (4), characterized in that: The outer wall of the upper mold (3) is fixedly connected with a long inclined ejector rod (5), the bottom of the stripper plate (4) is fixedly connected with a short inclined ejector rod (6), the inner wall of the base (1) is slidably connected with a stepped inclined ejector block (7), the stepped inclined ejector block (7) drives the long inclined ejector rod (5) and the short inclined ejector rod (6) to move, the long inclined ejector rod (5) drives the upper mold (3) to separate from the lower mold (2) and the plastic part, and the short inclined ejector rod (6) drives the plastic part to separate from the lower mold (2).

2. The plastic part processing and forming mold of claim 1, wherein: The stepped inclined ejector block (7) comprises two large-gradient inclined blocks at two sides and a small-gradient inclined block in the middle, the large-gradient inclined blocks drive the long inclined ejector rod (5) to move, and the small-gradient inclined block drives the short inclined ejector rod (6) to move.

3. The plastic part processing and forming mold of claim 1, wherein: The inclination angle of the long inclined ejector rod (5) is greater than that of the short inclined ejector rod (6).

4. The plastic part processing and forming mold of claim 1, wherein: The bottom of the long inclined ejector rod (5) and the short inclined ejector rod (6) is fixedly connected with a sliding block (8), and the top of the stepped inclined ejector block (7) is provided with a sliding groove (9), and the inner wall of the sliding groove (9) is slidably connected with the outer wall of the sliding block (8).

5. The plastic part processing and forming mold of claim 1, wherein: The top of the base (1) is provided with a limiting groove (10), and the inner wall of the limiting groove (10) is slidably connected with the outer wall of the long inclined ejector rod (5) and the short inclined ejector rod (6).

6. The plastic part processing and forming mold of claim 1, wherein: The inner wall of the base (1) is fixedly connected with an air cylinder (11), and one end of the piston rod of the air cylinder (11) is fixedly connected with one side of the stepped inclined ejector block (7).

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