Wear-resistant mold for plastic processing

Abstract

The invention discloses a wear-resistant mold for plastic processing, and relates to the field of molds, the wear-resistant mold comprises a bottom mounting plate, a lower mold plate, a forming block, a top mounting plate, a top mounting seat, an upper mold plate and a forming groove, the lower mold plate is located above the bottom mounting plate, the forming block is integrally formed at the upper end of the lower mold plate, and the top mounting plate is located above the lower mold plate. Automatic opening and closing of the honeycomb curtain are achieved through the driving motor and the transmission connecting rod, the lateral fixing force during mold closing is enhanced, deviation is avoided, accurate alignment of the upper mold plate and the lower mold plate is achieved, surface residues and water stains generated when a forming block is subjected to single-time forming machining are removed, the situation that plastic material residues influence next-time machining during machining is effectively prevented, and the machining efficiency is improved. Uniform cooling of the interior and the surface of the template is achieved, adhesion or deformation of a plastic material due to overheating is effectively prevented, circulation of cooling water from the top cooling groove to the panel cooling groove is achieved, and the self-sealing connector is automatically sealed in the mold splitting process.

Description

Technical Field

[0001] This invention relates to the field of molds, and in particular to a wear-resistant mold for plastic processing. Background Technology

[0002] Plastic molds are key equipment in industrial production for molding processes such as injection molding and compression molding. They are widely used in various plastic production and processing applications because they enable efficient production and processing of plastic products through injection molding.

[0003] However, in the use of plastic molds, traditional mold structures rely heavily on the rigid fit of guide pillars and guide sleeves for mold closing and positioning. Long-term use can lead to misalignment due to wear, especially in the molding of engineering plastics requiring high wear resistance. This makes it difficult to guarantee the mold's repeatability and positioning accuracy, affecting product consistency. Furthermore, during insert molding, metal parts are prone to displacement under injection impact, requiring additional positioning mechanisms to maintain stability. However, current dynamic positioning solutions for complex inserts are still imperfect. Moreover, the uniformity of the mold cooling system is crucial for controlling product deformation. Existing cooling channels are mostly concentrated on the sides of the mold cavity, resulting in insufficient cooling of the bottom area and potential warping due to uneven temperature. While conformal cooling channels can be optimized, their manufacturing cost is high and they are difficult to apply to steel plate molds. Additionally, after mold opening, residual mold release agent, cooling water, and plastic flash in traditional molds require manual cleaning, increasing downtime and potentially leading to higher defect rates due to incomplete cleaning. Summary of the Invention

[0004] The main objective of this invention is to provide a wear-resistant mold for plastic processing, which can effectively solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A wear-resistant mold for plastic processing includes a bottom mounting plate, a lower template, a molding block, a top mounting plate, a top mounting seat, an upper template, and a molding groove. The lower template is located above the bottom mounting plate. The molding block is integrally formed on the upper end of the lower template. The top mounting plate is located above the lower template. The top mounting seat is fixedly installed on the upper end of the top mounting plate. The upper template is fixedly installed on the lower end of the top mounting plate. The molding groove is formed on the lower end face of the upper template. Positioning guide rods are fixedly installed on both sides of the molding block at the upper end of the lower template. Positioning guide sleeves matching the positioning guide rods are fixedly installed on both sides of the interior of the top mounting plate and the upper template. A support mounting bracket is fixedly installed on the upper end of the mounting plate and fixedly connected to the lower end of the lower template. Positioning structures are fixedly installed on both sides of the support mounting bracket. Plate structures are fixedly installed on both sides of the upper template. A bottom cooling groove is opened in the center of the lower template. Mounting grooves are opened at the four corners of the lower template. Air jet structures are movably installed at the four corners of the lower template through the mounting grooves. A panel cooling groove is opened on the upper end face of the lower template outside the forming block and positioning guide rod. A flow guide connector is fixedly installed at the front of the upper end of the lower template. A top cooling groove is opened in the center of the upper template. A self-sealing connector is embedded in the front of the interior of the upper template.

[0007] As a further embodiment of the present invention, the positioning structure includes a cylinder mounting plate, a positioning cylinder, and a positioning rod. The cylinder mounting plate is fixedly mounted on one side of the support mounting frame, the positioning cylinder is fixedly mounted on one side of the cylinder mounting plate, and the positioning rod is fixedly mounted on the piston rod end of the positioning cylinder.

[0008] As a further embodiment of the present invention, a connecting plate that is fixedly connected to the lower template is fixedly installed on the inner side of the support mounting bracket, and a slot exists between the cylinder mounting plate and the support mounting bracket, with a positioning rod penetrating through the cylinder mounting plate.

[0009] As a further embodiment of the present invention, the plate structure includes a positioning plate, a plate joint, a positioning hole, and an exhaust nozzle. The positioning plate is fixedly installed on one side of the upper template, the plate joint is fixedly installed on one side of the positioning plate, the positioning hole is opened at the bottom of the positioning plate, and the exhaust nozzle is opened on the other end face of the positioning plate.

[0010] As a further embodiment of the present invention, the plate joint is connected to the exhaust nozzle, and when the upper template and the lower template are combined, the positioning plate is inserted into the slot between the cylinder mounting plate and the support mounting bracket, and the positioning rod is inserted into the positioning hole.

[0011] As a further embodiment of the present invention, two bottom water pipe joints are fixedly installed at the front end of the lower template, and bottom guide pipes are fixedly installed at the rear end and front end of the lower template in the middle of the two bottom water pipe joints. The bottom water pipe joints and the bottom guide pipes are all connected to the bottom cooling tank.

[0012] As a further embodiment of the present invention, the jet structure includes a jet block, a jet nozzle, and a support spring. The jet block is movably installed in the mounting groove, the jet nozzle is opened on the side of the jet block, and the support spring rests on the lower end of the jet block.

[0013] As a further embodiment of the present invention, the jet block protrudes to the upper end of the lower template, and the upper template and the lower template merge to press the jet block to retract into the mounting groove. The lower end of the support spring abuts against the bottom of the inner wall of the mounting groove, and the jet nozzle faces the panel cooling groove. Two side air pipe connectors that communicate with the mounting groove are fixedly installed on both sides of the lower template.

[0014] As a further embodiment of the present invention, the flow guide joint is embedded in the upper end surface of the lower template, and the panel cooling groove is connected to the drain port of the flow guide joint.

[0015] As a further embodiment of the present invention, two top water pipe joints are fixedly installed at the front end of the upper template, and a top guide pipe is fixedly installed at the rear end of the upper template. Both the top water pipe joints and the top guide pipe are connected to the top cooling tank. The top cooling tank is connected to the inlet of the self-sealing joint. The self-sealing joint is located above the guide joint and matches it.

[0016] Compared with the prior art, the present invention has the following beneficial effects: through the cooperation of the positioning structure and the plate structure, the positioning plate is inserted into the side of the support mounting frame, and the positioning cylinder drives the positioning rod to insert into the positioning hole, which enhances the lateral fixing force when the mold is closed, avoids offset, realizes the precise alignment of the upper and lower templates, improves the dimensional accuracy and repeatability of plastic molding, and is especially suitable for plastic processing with high wear resistance requirements, reducing mold wear.

[0017] At the same time, when the upper and lower templates separate, the positioning plate also lifts up. Air is sprayed from the exhaust nozzles on the side of the positioning plate. The air is sprayed onto the surface of the molding block to remove surface residues and water stains from the single molding process. This effectively prevents plastic material residues from affecting the next processing. It can also cool the molding block with air, quickly preparing it for the next processing and improving overall processing efficiency.

[0018] The mold adopts a multi-layer cooling channel, with bottom and top cooling tanks for internal cooling of the lower mold plate. When the upper and lower mold plates are combined, the cooling water from the top cooling tank enters the panel cooling tank through self-sealing joints and guide joints, which also achieves surface cooling of the lower mold plate. Therefore, uniform cooling of the mold plate's interior and surface is achieved, which effectively prevents plastic materials from sticking or deforming due to overheating, extends the mold's service life, shortens cooling time, and improves processing efficiency.

[0019] The self-sealing connector and the flow guide connector automatically connect when the mold is closed, so that the cooling water can flow from the top cooling tank to the panel cooling tank. When the mold is opened, the self-sealing connector automatically seals to prevent leakage, which simplifies the operation process, improves the automation and reliability of the mold, and is suitable for continuous production environments.

[0020] The air jet structure is located at the four corners of the mold. When the upper and lower mold plates separate, the support springs lift the air jet blocks, causing the air jet nozzles to spray air towards the panel cooling tank, blowing away cooling water and residue. Together with the exhaust nozzles, the surface of the molded block is cleaned, which completely avoids the accumulation of impurities, ensures the surface quality of each molding, and reduces maintenance requirements. Attached Figure Description

[0021] Figure 1 This is an overall structural diagram of a wear-resistant mold for plastic processing according to the present invention;

[0022] Figure 2 This is a combined structural diagram of a wear-resistant mold for plastic processing according to the present invention;

[0023] Figure 3 This is an exploded view of the cylinder mounting plate in a wear-resistant mold for plastic processing according to the present invention;

[0024] Figure 4 This is an enlarged view of the lower template in a wear-resistant mold for plastic processing according to the present invention;

[0025] Figure 5 This is an enlarged view of the upper template in a wear-resistant mold for plastic processing according to the present invention;

[0026] Figure 6 This is an enlarged view of the positioning structure in a wear-resistant mold for plastic processing according to the present invention;

[0027] Figure 7 This is an enlarged view of the plate structure in a wear-resistant mold for plastic processing according to the present invention;

[0028] Figure 8 This is a partial cross-sectional view of the lower template in a wear-resistant mold for plastic processing according to the present invention;

[0029] Figure 9 This is an enlarged view of the air jet structure in a wear-resistant mold for plastic processing according to the present invention;

[0030] Figure 10 This is a cross-sectional view of the upper template in a wear-resistant mold for plastic processing according to the present invention.

[0031] In the diagram: 1. Bottom mounting plate; 2. Support mounting bracket; 3. Connecting plate; 4. Lower template; 5. Molding block; 6. Positioning guide rod; 7. Top mounting plate; 8. Top mounting seat; 9. Positioning guide sleeve; 10. Upper template; 11. Molding groove; 12. Positioning structure; 13. Cylinder mounting plate; 14. Positioning cylinder; 15. Positioning insert rod; 16. Plate structure; 17. Positioning plate; 18. Plate joint; 19. Positioning hole; 20. Exhaust nozzle; 21. Bottom cooling groove; 22. Mounting groove; 23. Air jet structure; 24. Air jet block; 25. Air jet nozzle; 26. Support spring; 27. Side air pipe joint; 28. Bottom water pipe joint; 29. ​​Bottom guide pipe; 30. Panel cooling groove; 31. Guide joint; 32. Top cooling groove; 33. Top water pipe joint; 34. Top guide pipe; 35. Self-sealing joint. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] like Figures 1-10 As shown, a wear-resistant mold for plastic processing is presented. Please refer to it carefully. Figures 1-10 The system includes a bottom mounting plate 1, a lower template 4, a forming block 5, a top mounting plate 7, a top mounting seat 8, an upper template 10, and a forming groove 11. The lower template 4 is located above the bottom mounting plate 1. The forming block 5 is integrally formed on the upper end of the lower template 4. The top mounting plate 7 is located above the lower template 4. The top mounting seat 8 is fixedly installed on the upper end of the top mounting plate 7. The upper template 10 is fixedly installed on the lower end of the top mounting plate 7. The forming groove 11 is opened on the lower end face of the upper template 10. Positioning guide rods 6 are fixedly installed on both sides of the upper end of the lower template 4, located on both sides of the forming block 5. Positioning guide sleeves 9, matching the positioning guide rods 6, are fixedly installed on both sides of the interior of the top mounting plate 7 and the upper template 10. The bottom mounting plate 1... A support mounting bracket 2 is fixedly installed at the upper end and fixedly connected to the lower end of the lower template 4. Positioning structures 12 are fixedly installed on both sides of the support mounting bracket 2. Plate structures 16 are fixedly installed on both sides of the upper template 10. A bottom cooling groove 21 is opened in the center of the lower template 4. Mounting grooves 22 are opened at the four corners of the lower template 4. Air jet structures 23 are movably installed at the four corners of the lower template 4 through the mounting grooves 22. A panel cooling groove 30 is opened on the upper end surface of the lower template 4 outside the forming block 5 and the positioning guide rod 6. A flow guide connector 31 is fixedly installed at the front of the upper end of the lower template 4. A top cooling groove 32 is opened in the center of the upper template 10. A self-sealing connector 35 is embedded in the front of the upper template 10.

[0034] Specifically, when the upper template 10 and the lower template 4 are combined, the forming block 5 enters the forming groove 11, and the plastic material can be extruded and formed between the forming block 5 and the forming groove 11. At the same time, the positioning guide rod 6 is inserted into the positioning guide sleeve 9 to achieve the effect of connecting and positioning the upper template 10 and the lower template 4.

[0035] Please refer to this carefully. Figure 6 The positioning structure 12 includes a cylinder mounting plate 13, a positioning cylinder 14, and a positioning rod 15. The cylinder mounting plate 13 is fixedly installed on one side of the support mounting bracket 2, the positioning cylinder 14 is fixedly installed on one side of the cylinder mounting plate 13, and the positioning rod 15 is fixedly installed on the piston rod end of the positioning cylinder 14.

[0036] Please refer to this carefully. Figure 6 A connecting plate 3, which is fixedly connected to the lower template 4, is fixedly installed on the inner side of the support mounting bracket 2. There is a slot between the cylinder mounting plate 13 and the support mounting bracket 2, and the positioning rod 15 passes through the cylinder mounting plate 13.

[0037] Please refer to this carefully. Figure 7 The plate structure 16 includes a positioning plate 17, a plate joint 18, a positioning hole 19, and an exhaust nozzle 20. The positioning plate 17 is fixedly installed on one side of the upper template 10, the plate joint 18 is fixedly installed on one side of the positioning plate 17, the positioning hole 19 is opened at the bottom of the positioning plate 17, and the exhaust nozzle 20 is opened on the other end face of the positioning plate 17.

[0038] Please refer to this carefully. Figure 2 , Figure 3 and Figure 7 The plate joint 18 is connected to the exhaust nozzle 20. When the upper template 10 and the lower template 4 are combined, the positioning plate 17 is inserted into the slot between the cylinder mounting plate 13 and the support mounting bracket 2, and the positioning rod 15 is inserted into the positioning hole 19.

[0039] Specifically, when the upper template 10 and the lower template 4 are combined, the positioning plate 17 is simultaneously inserted into the slot between the cylinder mounting plate 13 and the support mounting bracket 2. Then, the positioning cylinder 14 operates to push out the positioning rod 15 and insert it into the positioning hole 19 to fix the positioning plate 17, thereby increasing the side positioning effect when the upper template 10 and the lower template 4 are connected and improving the accuracy when the upper template 10 and the lower template 4 are combined. When the upper template 10 and the lower template 4 are separated, the positioning plate 17 is lifted and located on both sides of the forming block 5. The air pipe is connected through the plate joint 18, and the air is discharged from the exhaust nozzle 20 on one side of the positioning plate 17 to spray air onto the surface of the forming block 5 to remove surface residue and water stains from the single forming process of the forming block 5.

[0040] Please refer to this carefully. Figure 4 and Figure 8Two bottom water pipe joints 28 are fixedly installed at the front end of the lower template 4. Bottom guide pipes 29 are fixedly installed at the rear end and front end of the lower template 4, which are located between the two bottom water pipe joints 28. Both the bottom water pipe joints 28 and the bottom guide pipes 29 are connected to the bottom cooling tank 21.

[0041] Specifically, the bottom water pipe connector 28 connects to the cooling water pipe, allowing cooling water to enter the bottom cooling tank 21 to cool the interior of the lower template 4, and the bottom guide pipe 29 serves as a guide between multiple bottom cooling tanks 21.

[0042] Please refer to this carefully. Figure 4 , Figure 8 and Figure 9 The jet structure 23 includes a jet block 24, a jet nozzle 25, and a support spring 26. The jet block 24 is movably installed in the mounting groove 22, the jet nozzle 25 is opened on the side of the jet block 24, and the support spring 26 is pressed against the lower end of the jet block 24.

[0043] Please refer to this carefully. Figure 4 , Figure 8 and Figure 9 The jet block 24 protrudes to the upper end of the lower template 4. The upper template 10 and the lower template 4 merge to press the jet block 24 to retract into the mounting groove 22. The lower end of the support spring 26 rests against the bottom of the inner wall of the mounting groove 22. The jet nozzle 25 faces the panel cooling groove 30. Two side air pipe connectors 27 that are connected to the mounting groove 22 are fixedly installed on both sides of the lower template 4.

[0044] Specifically, when the upper template 10 and the lower template 4 are combined, the air jet block 24 is retracted into the mounting groove 22 for concealment. When the upper template 10 and the lower template 4 are separated, the support spring 26 pushes the air jet block 24 to rise. The air pipe is connected through the side air pipe connector 27, and the air is discharged from the air jet port 25 through the mounting groove 22 and the air jet block 24.

[0045] Please refer to this carefully. Figure 4 and Figure 8 The flow guide 31 is embedded in the upper end surface of the lower template 4, and the panel cooling groove 30 is connected to the drain port of the flow guide 31.

[0046] Please refer to this carefully. Figure 5 , Figure 8 and Figure 10 Two top water pipe joints 33 are fixedly installed at the front end of the upper template 10, and a top guide pipe 34 is fixedly installed at the rear end of the upper template 10. Both the top water pipe joints 33 and the top guide pipe 34 are connected to the top cooling tank 32. The top cooling tank 32 is connected to the inlet of the self-sealing joint 35. The self-sealing joint 35 is located above the guide joint 31 and matches it.

[0047] Specifically, the top water pipe connector 33 connects to the cooling water pipe, allowing cooling water to enter the top cooling tank 32 to cool the interior of the upper template 10. The top guide pipe 34 serves as a guide between multiple top cooling tanks 32. When the upper template 10 and the lower template 4 are combined, the self-sealing connector 35 and the guide connector 31 are also connected. Therefore, the cooling water in the top cooling tank 32 also flows into the panel cooling tank 30 through the guide connector 31 and the self-sealing connector 35, allowing the cooling water to cool the surfaces of the upper template 10 and the lower template 4 through the panel cooling tank 30. When the upper template 10 and the lower template 4 are separated, the guide connector 31 also separates from the self-sealing connector 35, and the self-sealing connector 35 seals the surface. Then, the air discharged through the jet nozzle 25 blows away the cooling water in the panel cooling tank 30 to prevent water stains from remaining on the surface.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant mold for plastic processing, comprising a bottom mounting plate (1), a lower mold plate (4), a forming block (5), a top mounting plate (7), a top mounting seat (8), an upper mold plate (10) and a forming groove (11), the lower mold plate (4) is located above the bottom mounting plate (1), the forming block (5) is integrally formed on the upper end of the lower mold plate (4), the top mounting plate (7) is located above the lower mold plate (4), the top mounting seat (8) is fixedly installed on the upper end of the top mounting plate (7), the upper mold plate (10) is fixedly installed on the lower end of the top mounting plate (7), and the forming groove (11) is arranged on the lower end face of the upper mold plate (10), characterized in that: The upper end of the lower mold plate (4) is fixedly installed with a positioning guide rod (6) on both sides of the forming block (5), the top mounting plate (7) and the upper mold plate (10) are fixedly installed with a positioning guide sleeve (9) on both sides of the inside, the upper end of the bottom mounting plate (1) is fixedly installed with a support mounting bracket (2) fixedly connected with the lower end of the lower mold plate (4), both sides of the support mounting bracket (2) are fixedly installed with a positioning structure (12), both sides of the upper mold plate (10) are fixedly installed with a plate body structure (16), the inside of the lower mold plate (4) is provided with a bottom cooling groove (21), the four corners of the lower mold plate (4) are provided with a mounting groove (22), the four corners of the lower mold plate (4) are movably installed with a jet structure (23) through the mounting groove (22), the upper end face of the lower mold plate (4) is provided with a panel cooling groove (30) on the outside of the forming block (5) and the positioning guide rod (6), the upper end of the lower mold plate (4) is fixedly installed with a flow guide connector (31) in front, the inside of the upper mold plate (10) is provided with a top cooling groove (32), and the inside of the upper mold plate (10) is embedded with a self-sealing connector (35).

2. The wear-resistant mold for plastic processing according to claim 1, characterized in that: The positioning structure (12) comprises a cylinder mounting plate (13), a positioning cylinder (14) and a positioning plug rod (15), the cylinder mounting plate (13) is fixedly installed on one side of the support mounting bracket (2), the positioning cylinder (14) is fixedly installed on one side of the cylinder mounting plate (13), and the positioning plug rod (15) is fixedly installed on the piston rod end of the positioning cylinder (14).

3. The wear-resistant mold for plastic processing according to claim 2, characterized in that: The inside of the support mounting bracket (2) is fixedly installed with a connecting plate (3) fixedly connected with the lower mold plate (4), there is a slot between the cylinder mounting plate (13) and the support mounting bracket (2), and the positioning plug rod (15) penetrates through the cylinder mounting plate (13).

4. The wear-resistant mold for plastic processing according to claim 2, characterized in that: The plate body structure (16) comprises a positioning plate (17), a plate body connector (18), a positioning hole (19) and an exhaust nozzle (20), the positioning plate (17) is fixedly installed on one side of the upper mold plate (10), the plate body connector (18) is fixedly installed on one side of the positioning plate (17), the positioning hole (19) is formed in the bottom of the positioning plate (17), and the exhaust nozzle (20) is formed in the other side end face of the positioning plate (17).

5. The wear-resistant mold for plastic processing according to claim 4, characterized in that: The plate body connector (18) penetrates through the exhaust nozzle (20), when the upper mold plate (10) and the lower mold plate (4) are combined, the positioning plate (17) is inserted into the slot between the cylinder mounting plate (13) and the support mounting bracket (2), and the positioning plug rod (15) is inserted into the positioning hole (19).

6. The wear-resistant mold for plastic processing according to claim 1, characterized in that: The front end of the lower mold plate (4) is fixedly installed with two bottom water pipe connectors (28), the rear end and the front end of the lower mold plate (4) are fixedly installed with a bottom flow guide pipe (29) in the middle of the two bottom water pipe connectors (28), and the bottom water pipe connector (28) and the bottom flow guide pipe (29) penetrate through the bottom cooling groove (21).

7. The wear-resistant mold for plastic processing according to claim 1, characterized in that: The jet structure (23) comprises a jet block (24), a jet port (25) and a supporting spring (26), the jet block (24) is movably installed in the installation slot (22), the jet port (25) is arranged on the side of the jet block (24), and the supporting spring (26) is arranged on the lower end of the jet block (24).

8. The wear-resistant mold for plastic processing according to claim 7, characterized in that: The jet block (24) protrudes to the upper end of the lower mold plate (4), the upper mold plate (10) is combined with the lower mold plate (4) to press the jet block (24) to shrink into the installation slot (22), the lower end of the supporting spring (26) is arranged on the bottom of the inner wall of the installation slot (22), the jet port (25) faces the panel cooling groove (30), and the two sides of the lower mold plate (4) are both fixedly installed with two side air pipe joints (27) penetrating through the installation slot (22).

9. The wear-resistant mold for plastic processing according to claim 1, characterized in that: The flow guide joint (31) is embedded in the upper end surface of the lower mold plate (4), and the panel cooling groove (30) is in penetrating connection with the water outlet of the flow guide joint (31).

10. The wear-resistant mold for plastic processing according to claim 1, characterized in that: The front end of the upper mold plate (10) is fixedly installed with two top water pipe joints (33), the rear end of the upper mold plate (10) is fixedly installed with a top flow guide pipe (34), the top water pipe joints (33) and the top flow guide pipe (34) are both in penetrating connection with the top cooling groove (32), the top cooling groove (32) is in penetrating connection with the water inlet of the self-sealing joint (35), and the self-sealing joint (35) is located above the flow guide joint (31) and matched with the flow guide joint (31).

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