An easy-to-change mold base

Abstract

This utility model relates to the field of mold technology and discloses a mold frame that is easy to replace, including a moving mold frame and a fixed mold frame. The moving mold frame has a moving mold core at its bottom, and the fixed mold frame has a fixed mold core. Both the moving mold frame and the fixed mold frame are provided with hydraulic locking components for quick assembly and disassembly of the moving mold core and the fixed mold core, respectively. The hydraulic locking components include two cylindrical grooves respectively located on both sides of the moving mold frame, and cavities are formed between the cylindrical grooves on the same side. The moving mold frame has multiple through holes that are connected to the cylindrical grooves. Each of the multiple cylindrical grooves is provided with a miniature hydraulic cylinder. This utility model controls the multiple miniature hydraulic cylinders to move synchronously through a hydraulic drive system, causing all L-shaped pull blocks to simultaneously engage or disengage from the locking grooves, replacing the traditional cumbersome bolt assembly and disassembly method. It can quickly replace the entire set of mold cores, significantly reducing equipment downtime and greatly improving equipment utilization and overall production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and more specifically to a mold frame that is easy to replace. Background Technology

[0002] In modern mass production processes such as injection molding and die casting, molds are the core equipment for forming products. The mold frame, as the installation base of the mold, directly determines the efficiency and flexibility of production preparation by its connection method with the mold core (including the moving mold core and the fixed mold core).

[0003] Currently, the vast majority of mold frames and mold cores in the industry are fixed by traditional bolt connections. When it is necessary to disassemble the mold to change the product, the opposite cumbersome process must be followed, and all these bolts must be removed one by one. The disassembly and assembly of a large number of bolts is a time-consuming physical labor. A complete mold replacement often takes several hours or even longer, resulting in long downtime of the equipment and severely limiting the utilization rate and production capacity of the injection molding machine. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a mold frame that is easy to replace, so as to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a mold frame that is easy to replace, including a moving mold frame and a fixed mold frame, wherein the moving mold frame is provided with a moving mold core at the bottom, and the fixed mold frame is provided with a fixed mold core, and both the moving mold frame and the fixed mold frame are provided with hydraulic locking components for quick assembly and disassembly of the moving mold core and the fixed mold core, respectively; The hydraulic locking assembly includes two cylindrical slots respectively located on both sides of the moving mold frame, with cavities formed between the cylindrical slots on the same side. The moving mold frame has multiple through holes that communicate with the cylindrical slots. Each of the cylindrical slots contains a miniature hydraulic cylinder, and each of the through holes has a connecting rod slidably connected to it. One end of each connecting rod is fixed to one end of the piston rod of the miniature hydraulic cylinder. Each of the opposite ends of the connecting rods has an end connecting block fixedly connected to it. The bottom end of each end connecting block has an L-shaped pull block fixedly connected to it. The moving mold core has multiple recesses, and each of the recesses has a locking groove on one inner wall. The L-shaped pull block is inserted into the recess, and the horizontal section of the L-shaped pull block is embedded in the locking groove.

[0006] As a further embodiment of this utility model, two hydraulic connectors are fixedly connected to both sides of the moving mold frame, and the other ends of the two hydraulic connectors extend into the cavity. The two hydraulic connectors on the same side are respectively connected to two miniature hydraulic cylinders through oil pipes.

[0007] As a further embodiment of this utility model, the other end of each of the plurality of hydraulic joints is provided with a hydraulic valve for locking the oil pressure in the oil pipe and the micro hydraulic cylinder, and the other end of each hydraulic valve is connected to the oil pipe of the external hydraulic system.

[0008] As a further embodiment of this utility model, two threaded grooves are provided on the other two sides of the moving mold frame. A circular hole communicating with the through hole is provided on the inner wall of one side of each of the multiple threaded grooves. A locking rod is slidably connected in the circular hole. A locking hole that cooperates with the circular hole is provided on the outer circumference of each of the multiple connecting rods. A screw is threadedly connected in the threaded groove. The other end of the screw is fixed to the locking rod, and the other end of the locking rod is inserted into the locking hole.

[0009] As a further embodiment of this invention, the width of the horizontal section of the L-shaped pull block is smaller than the width of the groove, and the protruding part of the L-shaped pull block matches the locking groove.

[0010] As a further embodiment of this utility model, the edge of the L-shaped pull block embedded in the locking groove is chamfered.

[0011] As a further embodiment of this utility model, lifting rings are provided on the outer side walls of the moving mold frame and the fixed mold frame, and a guide slope is provided at the entrance of the groove.

[0012] As a further embodiment of this invention, the fixed mold frame is provided with the same hydraulic locking assembly as the moving mold frame, for locking the fixed mold core.

[0013] The technical effects and advantages of this utility model are as follows: 1. This utility model controls multiple micro hydraulic cylinders to move synchronously through a hydraulic drive system, which drives all L-shaped pull blocks to simultaneously insert into or disengage from the locking groove, replacing the traditional cumbersome bolt disassembly and assembly method. It can quickly replace the entire set of mold cores, significantly reducing equipment downtime and greatly improving equipment utilization and overall production efficiency.

[0014] 2. This utility model uses a mechanical safety locking mechanism consisting of screws, locking rods and locking holes, which can be manually activated after hydraulic locking. As an independent safety barrier, it can absolutely ensure that the mold core will not loosen even in extreme situations such as accidental pressure leakage of the hydraulic system or oil pipe rupture, effectively avoiding accidents and protecting the safety of personnel and equipment.

[0015] 3. This utility model, through the cooperation of the groove and the L-shaped pull block and the guidance of the guide slope, can automatically correct the installation position of the mold core, ensure the repeatability of the positioning accuracy for each installation, guarantee the consistency and stability of the product molding quality, and reduce the defect rate. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 This is a cross-sectional view of the moving mold frame of this utility model.

[0018] Figure 3 This utility model Figure 2 A magnified view of a portion of the image.

[0019] Figure 4 This is a cross-sectional view of the moving mold core of this utility model.

[0020] Figure 5 This is an enlarged sectional view of the moving mold frame of this utility model.

[0021] The attached figures are labeled as follows: 1. Moving mold frame; 2. Moving mold core; 3. Fixed mold frame; 4. Fixed mold core; 5. Cylindrical groove; 6. Through hole; 7. Miniature hydraulic cylinder; 8. Connecting rod; 9. End connecting block; 10. L-shaped pull block; 11. Insert groove; 12. Locking groove; 13. Hydraulic connector; 14. Hydraulic valve; 15. Threaded groove; 16. Round hole; 17. Screw; 18. Locking rod; 19. Locking hole. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Reference Figures 1-5 This utility model provides a mold frame that is easy to replace, including a movable mold frame 1 and a fixed mold frame 3. The movable mold frame 1 is provided with a movable mold core 2 at its bottom, and the fixed mold frame 3 is provided with a fixed mold core 4. Both the movable mold frame 1 and the fixed mold frame 3 are provided with hydraulic locking components for quick assembly and disassembly of the movable mold core 2 and the fixed mold core 4, respectively. The hydraulic locking assembly includes two cylindrical grooves 5 respectively located on both sides of the moving mold frame 1, with cavities formed between the cylindrical grooves 5 on the same side. The moving mold frame 1 has multiple through holes 6 communicating with the cylindrical grooves 5. Each cylindrical groove 5 contains a miniature hydraulic cylinder 7, and each through hole 6 has a connecting rod 8 slidably connected to it. One end of the connecting rod 8 is fixed to one end of the piston rod of the miniature hydraulic cylinder 7. The opposite ends of the multiple connecting rods 8 are fixedly connected to end connecting blocks 9 by bolts. The bottom end of the end connecting block 9... An L-shaped pull block 10 is fixedly connected by bolts. Multiple slots 11 are provided on the moving mold core 2. Locking slots 12 are provided on the inner wall of one side of each slot 11. The L-shaped pull block 10 is inserted into the slot 11, and the horizontal section of the L-shaped pull block 10 is embedded in the locking slot 12. The width of the horizontal section of the L-shaped pull block 10 is smaller than the width of the slot 11, and the protruding part of the L-shaped pull block 10 fits into the locking slot 12. The edge of the L-shaped pull block 10 embedded in the locking slot 12 is chamfered.

[0024] It should be noted that the miniature hydraulic cylinder 7 is an actuator in the hydraulic system. It achieves the telescopic function by cooperating with the hydraulic system. Furthermore, it achieves precise control of the telescopic displacement of the hydraulic cylinder piston rod by cooperating with magnetic switches, proximity switches, or photoelectric switches. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0025] In use, the operator uses lifting equipment to lift the moving mold core 2 and the fixed mold core 4 to the bottom of the moving mold frame 1 and the fixed mold frame 3 respectively through the lifting rings on the outer walls of the moving mold frame 1 and the fixed mold frame 3. The operator aligns the groove 11 on the mold core with the L-shaped pull block 10 on the mold frame. The guide slope forces the L-shaped pull block 10 and the moving mold core 2 to slide relative to each other, and finally guides the L-shaped pull block 10 to smoothly enter the groove 11. After the moving mold core 2 is placed in place, the external hydraulic system is activated. The pressurized oil flows out through the hydraulic connector 13, passes through the hydraulic valve 14, and finally exits through the oil pipe into the rod chamber of the micro hydraulic cylinder 7. The high-pressure oil pulls the piston rod of the micro hydraulic cylinder 7 to retract. The piston rod drives the connecting rod 8, which is fixed to it, to slide in the opposite direction of the moving mold core 2 in the through hole 6. The connecting rod 8 pulls the end connecting block 9 and the L-shaped pull block 10 at its end to move together. Under the contact and guidance of the chamfer of the edge of the L-shaped pull block 10 and the edge of the locking groove 12, the horizontal section of the L-shaped pull block 10 slides in and is completely embedded in the locking groove 12. The micro hydraulic cylinder 7 generates a huge pulling force, which pulls the moving mold core 2 tightly towards and against the moving mold frame 1 through the connecting rod 8 and the L-shaped pull block 10. At this time, the moving mold core 2 is firmly locked.

[0026] The hydraulic drive system controls multiple miniature hydraulic cylinders 7 to move synchronously, causing all L-shaped pull blocks 10 to simultaneously engage or disengage from the locking grooves 12. This replaces the traditional cumbersome bolt disassembly and assembly method, allowing for quick replacement of the entire mold core, significantly reducing equipment downtime, and greatly improving equipment utilization and overall production efficiency.

[0027] In this utility model, two hydraulic connectors 13 are fixedly connected to both sides of the moving mold frame 1 by bolts, and the other ends of the two hydraulic connectors 13 extend into the cavity. The two hydraulic connectors 13 on the same side are respectively connected to two miniature hydraulic cylinders 7 through oil pipes.

[0028] Furthermore, the other end of each of the multiple hydraulic joints 13 is provided with a hydraulic valve 14 to lock the oil pressure in the oil pipe and the micro hydraulic cylinder 7, and the other end of each hydraulic valve 14 is connected to the oil pipe in the external hydraulic system.

[0029] In this utility model, two threaded grooves 15 are provided on the other two sides of the moving mold frame 1. A circular hole 16 communicating with the through hole 6 is provided on the inner wall of one side of the multiple threaded grooves 15. A locking rod 18 is slidably connected in the circular hole 16. A locking hole 19 that cooperates with the circular hole 16 is provided on the outer circumference of the multiple connecting rods 8. A screw 17 is threadedly connected in the threaded groove 15. The other end of the screw 17 is fixed to the locking rod 18, and the other end of the locking rod 18 is inserted into the locking hole 19.

[0030] After locking and maintaining pressure, the operator uses a tool to tighten screw 17. Screw 17 is screwed into the threaded groove 15, pushing the locking rod 18 fixed thereto to slide forward in the round hole 16. The end of the locking rod 18 is finally inserted into the locking hole 19 on the circumference of the connecting rod 8, mechanically fixing the position of the connecting rod 8. Even if the hydraulic pressure is completely lost, the connecting rod 8 cannot be retracted, ensuring the absolute safety and reliability of the locking of the moving mold core 2. Disassembly can be performed by reversing the installation steps. The installation steps of the fixed mold frame 3 and fixed mold core 4 are the same as those of the moving mold frame 1 and moving mold core 2.

[0031] The mechanical safety locking mechanism, consisting of screw 17, locking rod 18 and locking hole 19, can be manually activated after hydraulic locking. As an independent safety barrier, it can absolutely ensure that the mold core will not come loose even in extreme situations such as accidental pressure relief of the hydraulic system or rupture of the oil pipe, effectively preventing accidents and protecting the safety of personnel and equipment.

[0032] In this utility model, lifting rings are provided on the outer side walls of the moving mold frame 1 and the fixed mold frame 3, and a guide slope is provided at the entrance of the groove 11. The fixed mold frame 3 is provided with the same hydraulic locking assembly as the moving mold frame 1, which is used to lock the fixed mold core 4.

[0033] Through the cooperation of the groove 11 and the L-shaped pull block 10, and the guidance of the guide slope, the installation position of the mold core can be automatically corrected, ensuring the repeatability of the positioning accuracy for each installation, guaranteeing the consistency and stability of the product molding quality, and reducing the defect rate.

[0034] The use of this utility model involves the following steps: S1: In use, the operator uses lifting equipment to lift the moving mold core 2 and the fixed mold core 4 to the bottom of the moving mold frame 1 and the fixed mold frame 3 respectively through the lifting rings on the outer side walls of the moving mold frame 1 and the fixed mold frame 3. The operator aligns the groove 11 on the mold core with the L-shaped pull block 10 on the mold frame. The inclined surface forces the L-shaped pull block 10 and the moving mold core 2 to slide relative to each other, and finally guides the L-shaped pull block 10 to smoothly enter the groove 11. S2: After the moving mold core 2 is placed in place, the external hydraulic system is started. The pressurized oil flows out through the hydraulic connector 13, passes through the hydraulic valve 14, and finally exits the rod chamber of the micro hydraulic cylinder 7 through the oil pipe. The high-pressure oil pulls the piston rod of the micro hydraulic cylinder 7 to retract. The piston rod drives the connecting rod 8 fixed to it to slide the moving mold core 2 in the opposite direction in the through hole 6. The connecting rod 8 pulls the end connecting block 9 and the L-shaped pull block 10 at its end to move together. Under the contact and guidance of the chamfer of the edge of the L-shaped pull block 10 and the edge of the locking groove 12, the horizontal section of the L-shaped pull block 10 slides in and is completely embedded in the locking groove 12. The micro hydraulic cylinder 7 generates a huge pulling force, which pulls the moving mold core 2 tightly towards and against the moving mold frame 1 through the connecting rod 8 and the L-shaped pull block 10. At this time, the moving mold core 2 is firmly locked. S3: After locking and maintaining pressure, the operator uses a tool to tighten screw 17. Screw 17 is screwed into the threaded groove 15, pushing the locking rod 18 fixed thereto to slide forward in the round hole 16. The end of the locking rod 18 is finally inserted into the locking hole 19 on the circumference of the connecting rod 8, mechanically fixing the position of the connecting rod 8. Even if the hydraulic pressure is completely lost, the connecting rod 8 cannot be retracted, ensuring the absolute safety and reliability of the locking of the moving mold core 2. The installation steps can be reversed when disassembling. S4: The installation steps for the fixed mold frame 3 and the fixed mold core 4 are the same as those for the moving mold frame 1 and the moving mold core 2.

[0035] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change. The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs. The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A replaceable mold frame, comprising a movable mold frame (1) and a fixed mold frame (3), wherein the movable mold frame (1) has a movable mold core (2) at its bottom and the fixed mold frame (3) has a fixed mold core (4), characterized in that: Both the moving mold frame (1) and the fixed mold frame (3) are equipped with hydraulic locking components for quick assembly and disassembly of the moving mold core (2) and the fixed mold core (4), respectively. The hydraulic locking assembly includes two cylindrical grooves (5) respectively located on both sides of the moving mold frame (1), and cavities are provided between the cylindrical grooves (5) on the same side. The moving mold frame (1) has multiple through holes (6) respectively connected to the cylindrical grooves (5). Each of the multiple cylindrical grooves (5) is provided with a miniature hydraulic cylinder (7). Each of the multiple through holes (6) is slidably connected with a connecting rod (8). One end of the connecting rod (8) is fixed to one end of the piston rod of the miniature hydraulic cylinder (7). Each of the multiple connecting rods (8) is fixedly connected with an end connecting block (9) at the opposite end. An L-shaped pull block (10) is fixedly connected to the bottom end of the end connecting block (9). The moving mold core (2) has multiple slots (11). Each of the multiple slots (11) has a locking groove (12) on one side of its inner wall. The L-shaped pull block (10) is inserted into the slot (11), and the horizontal section of the L-shaped pull block (10) is embedded in the locking groove (12).

2. A readily replaceable die set according to claim 1 wherein: Two hydraulic connectors (13) are fixedly connected to both sides of the moving mold frame (1), and the other end of the two hydraulic connectors (13) extends into the cavity. The two hydraulic connectors (13) on the same side are connected to two micro hydraulic cylinders (7) through oil pipes respectively.

3. A readily replaceable die set according to claim 2 wherein: The other end of each of the hydraulic joints (13) is provided with a hydraulic valve (14) for locking the oil pressure in the oil pipe and the micro hydraulic cylinder (7), and the other end of each hydraulic valve (14) is connected to the oil pipe in the external hydraulic system.

4. The readily replaceable mold frame of claim 1 wherein: Two threaded grooves (15) are provided on both sides of the moving mold frame (1). A circular hole (16) communicating with the through hole (6) is provided on the inner wall of one side of each of the threaded grooves (15). A locking rod (18) is slidably connected in the circular hole (16). A locking hole (19) that cooperates with the circular hole (16) is provided on the outer circumference of each of the connecting rods (8). A screw (17) is threaded in the threaded groove (15). The other end of the screw (17) is fixed to the locking rod (18), and the other end of the locking rod (18) is inserted into the locking hole (19).

5. The readily replaceable mold frame of claim 1 wherein: The width of the horizontal section of the L-shaped pull block (10) is less than the width of the groove (11), and the protruding part of the L-shaped pull block (10) matches the locking groove (12).

6. A readily replaceable die set according to claim 5 wherein: The L-shaped pull block (10) has a chamfered edge on one side of the locking groove (12) where it is embedded.

7. A readily replaceable mold frame according to claim 1, wherein: Lifting rings are provided on the outer walls of the moving mold frame (1) and the fixed mold frame (3), and a guide slope is provided at the entrance of the groove (11).

8. The readily replaceable mold frame of claim 1 wherein: The fixed mold frame (3) is equipped with the same hydraulic locking assembly as the moving mold frame (1) for locking the fixed mold core (4).

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