Anti-blocking ejection structure for plastic injection mold

Abstract

The utility model relates to the technical field of plastic injection molding, and discloses an anti-blocking ejection structure for a plastic injection mold, which comprises a base, a support column fixedly mounted at the bottom of the base, a fixed block fixedly mounted at the top of the base, an air cylinder fixedly mounted at the bottom of the base, a chuck fixedly mounted on an output shaft of the air cylinder, and an ejector rod fixedly mounted on the chuck. A fixing plate is fixedly mounted at the top of the fixing block, and a first positioning column and a second positioning column are fixedly mounted at the top of the fixing plate. According to the anti-blocking ejection structure for the plastic injection mold, through the design of the insertion rod, the insertion rod can be located in the fixing plate during normal machining, when blockage occurs, the insertion rod can be pulled out, and then the first insertion groove is cleaned, so that the first insertion groove is smooth, different conditions can be conveniently coped, the situation that an internal runner needs to be heated due to the fact that an inductor is used for heating is avoided, and the production efficiency is improved. In the prior art, energy waste is easily caused, secondary cooling is needed, the practicability is poor, and popularization and use are not convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic injection molding, in particular to an anti-blocking ejection structure for a plastic injection mold. Background Art

[0002] Plastics are materials primarily composed of high-molecular-weight synthetic resins, with appropriate additives such as plasticizers, stabilizers, antioxidants, flame retardants, and colorants added. These materials are then processed to form a plastic (flexible) material, or a rigid material formed by curing and cross-linking. Plastics are important organic synthetic polymers with a wide range of applications in everyday life. The production of plastic products requires injection molds for molding.

[0003] Chinese utility model patent announcement number: CN217293262U, discloses: a plastic injection mold anti-blocking ejection structure, the plastic injection mold anti-blocking ejection structure, an anti-blocking injection molding component is added to the injection channel, and can use induction heating to melt the cooled plastic blocked in the injection molding pipe, thereby preventing the injection molding pipe from being blocked and affecting the injection molding work. However, although the plastic injection mold anti-blocking ejection structure uses induction heating, it is easy to heat the entire mold and then need to be cooled again, which easily leads to a waste of electric energy and is not convenient for promotion and use. Moreover, the plastic injection mold anti-blocking ejection structure is not designed with a variety of ejection structures, resulting in a relatively single ejection structure. When a fault occurs, it cannot be used normally. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an anti-blocking ejection structure for a plastic injection mold, which can effectively solve the problems in the prior art, such as the tendency to heat the entire mold and then need to cool it again, which easily leads to waste of electric energy, is not convenient for popularization and use, and does not design a variety of ejection structures, resulting in a relatively single ejection structure, which cannot be used normally when a fault occurs.

[0005] The technical solution adopted by the utility model is: an anti-blocking ejection structure for a plastic injection mold, comprising a base, a support column fixedly installed on the bottom of the base, a fixed block fixedly installed on the top of the base, a cylinder fixedly installed on the bottom of the base, a chuck fixedly installed on the output shaft of the cylinder, a fixed plate fixedly installed on the top of the fixed block, a positioning column 1 and a positioning column 2 fixedly installed on the top of the fixed plate, a slot 1 is provided on the top of the fixed plate, a fixed mold assembly is fixedly installed on the top of the fixed mold assembly, a movable mold is provided on the top of the movable mold, an injection nozzle is fixedly installed, and a connecting block is fixedly installed on the outer side of the fixed block by screws.

[0006] Preferably, the fixed mold assembly includes a fixed module, a positioning groove 1 and a positioning groove 2 are provided on the top of the fixed module, a mold cavity is provided on the inner side of the top of the fixed module, a slot 2 is provided through the top of the mold cavity, the positioning groove 1 is adapted to the positioning column 1, and the positioning groove 2 is adapted to the positioning column 2.

[0007] Through the above technical solution, through the cooperation of positioning groove one, positioning groove two, positioning column one and positioning column two, when installing the fixed mold assembly, positioning column one and positioning column two can pass through positioning groove one and positioning groove two to play a positioning role, and when installing the movable mold, they can also play a positioning role for the movable mold, which can facilitate the rapid installation of the entire mold.

[0008] Preferably, a slide is provided inside the fixed module, a sliding rod is slidably connected inside the slide, a limit frame is installed on the top of the fixed module, a stop block is fixedly installed on the bottom of the limit frame, the size of the stop block is the same as the size of the slide, and the side of the sliding rod close to the mold cavity adopts a chamfer design.

[0009] Through the above technical solution and the design of the slide, when injection molding is carried out, a limit frame can be placed on the outside of the mold cavity so that the block blocks the slide to avoid blockage. After the processing is completed, the limit frame can be taken out first to move the block away from the slide, and then the sliding rod can be pushed so that one end of the chamfered design contacts the top of the plastic mold, so that the mold can be separated from the mold cavity, which can facilitate quick removal of the mold.

[0010] Preferably, the slides, sliding rods and stops are provided in two identical groups, each group of the slides, sliding rods and stops is provided with two identical groups, and the two groups of the slides, sliding rods and stops are symmetrically distributed about the center line of the fixed module.

[0011] Through the above technical solution, through the design of four slides, sliding rods and blocks, the mold inside the mold cavity can be removed from both sides, which can avoid unilateral removal that easily causes damage to the mold and can improve the diversity of the overall mold.

[0012] Preferably, an insert rod is installed on the inner side of the fixing plate, and the insert rod is connected to the slot.

[0013] Through the above technical solution, through the design of the insertion rod, during normal processing, the insertion rod can be located inside the fixed plate. When blockage occurs, the insertion rod can be pulled out and then the slot one can be cleaned to make the slot one unobstructed, which can facilitate dealing with different situations.

[0014] Preferably, a bolt is provided through the top of the chuck, a movable plate is fixedly installed on the bottom of the chuck by the bolt, a thimble is fixedly installed on the top of the movable plate, a spring is fixedly installed on the outside of the thimble, the thimble passes through slot one and extends to the inner side of slot two, and the bolt passes through the chuck and extends to the inside of the movable plate.

[0015] Through the above technical solution and the design of the ejector, when the mold needs to be ejected, the chuck can be driven up and down by the cylinder. At the same time, the chuck can make the movable plate and the ejector move up and down to eject the mold in the mold cavity.

[0016] Preferably, the injection nozzle and the fixed mold assembly are located on the same vertical horizontal line, one end of the spring is fixedly mounted on the movable plate, and the other end of the spring is fixedly mounted on the fixed plate.

[0017] Through the above technical solution, through the design of the spring, when ejection is performed, the spring can be brought into contact with the fixed plate, causing it to deform. Subsequently, when the cylinder fails, the internal pressure of the cylinder can be removed, and the spring can be reset, which can drive the movable plate and the ejector to reset, thereby avoiding the inability to retract the ejector when the cylinder cannot be retracted, thereby improving the diversity of the overall device.

[0018] Compared with the prior art, the present invention provides an anti-blocking ejection structure for a plastic injection mold, which has the following beneficial effects:

[0019] 1. The plastic injection mold uses an anti-blocking ejection structure. Through the design of the plug rod, when in normal processing, the plug rod can be located inside the fixed plate. When a blockage occurs, the plug rod can be pulled out and then the slot one can be cleaned to make the slot one unobstructed. This can be convenient for dealing with different situations and avoids the use of induction heating. It is necessary to heat the internal flow channel, which not only easily causes energy waste, but also requires cooling again. The practicality is poor and it is not convenient for popularization and use.

[0020] 2. The plastic injection mold uses an anti-blocking ejection structure. Through the design of the slide, when injection molding is carried out, a limit frame can be placed on the outside of the mold cavity so that the block blocks the slide to avoid blockage. After the processing is completed, the limit frame can be taken out first to keep the block away from the slide, and then the sliding rod can be pushed to make one end of the chamfered design contact with the top of the plastic mold, so that the mold can be separated from the mold cavity, which can facilitate the rapid removal of the mold. Through the design of the ejector, when the mold needs to be ejected, the chuck can be driven up and down by the cylinder. At the same time, the chuck can make the movable plate and the ejector move up and down to eject the mold in the mold cavity. A variety of ejection can be achieved and can be used according to actual conditions to improve the diversity of the overall mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the split structure of the utility model Figure 1 ;

[0023] Figure 3 This is a schematic diagram of the split structure of the utility model Figure 2 ;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the fixed mold assembly of the utility model;

[0025] Figure 5 This is a schematic diagram of the disassembled structure of the cylinder and chuck of the utility model.

[0026] Among them: 1. Base; 2. Support column; 3. Fixed block; 4. Cylinder; 5. Chuck; 6. Bolt; 7. Moving plate; 8. Ejector pin; 9. Spring; 10. Fixed plate; 11. Positioning column 1; 12. Positioning column 2; 13. Slot 1; 14. Fixed mold assembly; 1401. Fixed mold module; 1402. Positioning slot 1; 1403. Positioning slot 2; 1404. Mold cavity; 1405. Slot 2; 1406. Slide; 1407. Sliding rod; 1408. Limit frame; 1409. Block; 15. Moving mold; 16. Injection nozzle; 17. Connecting block; 18. Insert rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1: Figure 1-5 As shown, the utility model provides an anti-blocking ejection structure for a plastic injection mold, including a base 1, a support column 2 is fixedly installed at the bottom of the base 1, a fixed block 3 is fixedly installed at the top of the base 1, a cylinder 4 is fixedly installed at the bottom of the base 1, a chuck 5 is fixedly installed on the output shaft of the cylinder 4, a fixed plate 10 is fixedly installed on the top of the fixed block 3, a positioning column 11 and a positioning column 2 12 are fixedly installed on the top of the fixed plate 10, a slot 13 is provided on the top of the fixed plate 10, a fixed mold assembly 14 is fixedly installed on the top of the fixed mold assembly 14, a movable mold 15 is provided on the top of the movable mold 15, an injection nozzle 16 is fixedly installed on the top of the movable mold 15, and a connecting block 17 is fixedly installed on the outside of the fixed block 3 by screws.

[0029] Specifically, the fixed mold assembly 14 includes a fixed module 1401, and a positioning groove 1402 and a positioning groove 2 1403 are provided on the top of the fixed module 1401. A mold cavity 1404 is provided on the inner side of the top of the fixed module 1401, and a slot 2 1405 is provided through the top of the mold cavity 1404. The positioning groove 1402 is adapted to the positioning column 11, and the positioning groove 2 1403 is adapted to the positioning column 2 12. The advantage is that through the cooperation of the positioning groove 1402, the positioning groove 2 1403, the positioning column 11 and the positioning column 2 12, when the fixed mold assembly 14 is installed, the positioning column 11 and the positioning column 2 12 can pass through the positioning groove 1402 and the positioning groove 2 1403 to play a positioning role, and when the movable mold 15 is installed, it can also play a positioning role for the movable mold 15, which can facilitate the rapid installation of the entire mold.

[0030] Specifically, a slide 1406 is provided inside the fixed module 1401, and a sliding rod 1407 is slidably connected inside the slide 1406. A limit frame 1408 is installed on the top of the fixed module 1401, and a stop block 1409 is fixedly installed on the bottom of the limit frame 1408. The size of the stop block 1409 is the same as that of the slide 1406. The side of the sliding rod 1407 close to the mold cavity 1404 adopts a chamfered design. The advantage is that through the design of the slide 1406, when injection molding is carried out, the limit frame 1408 can be placed outside the mold cavity 1404, so that the stop block 1409 blocks the slide 1406 to avoid blockage. After the processing is completed, the limit frame 1408 can be taken out first to make the stop block 1409 away from the slide 1406, and then the sliding rod 1407 can be pushed so that one end of the chamfered design contacts the top of the plastic mold, so that the mold can be separated from the mold cavity 1404, which can facilitate quick removal of the mold.

[0031] Specifically, two identical groups of slides 1406, sliding rods 1407 and stops 1409 are provided, and each group of slides 1406, sliding rods 1407 and stops 1409 is provided with two identical groups. The two groups of slides 1406, sliding rods 1407 and stops 1409 are symmetrically distributed about the center line of the fixed module 1401. The advantage is that through the design of four slides 1406, sliding rods 1407 and stops 1409, the mold inside the mold cavity 1404 can be removed from both sides, avoiding unilateral removal that easily causes damage to the mold, and can improve the diversity of the overall mold.

[0032] Example 2: Figure 2-5 As shown, it is an improvement to the previous embodiment.

[0033] Specifically, an insertion rod 18 is installed on the inner side of the fixed plate 10, and the insertion rod 18 is connected to the slot 13. The advantage is that through the design of the insertion rod 18, during normal processing, the insertion rod 18 can be located inside the fixed plate 10. When a blockage occurs, the insertion rod 18 can be pulled out and then the slot 13 can be cleaned to make the slot 13 unobstructed, which can facilitate dealing with different situations.

[0034] Specifically, a bolt 6 is provided through the top of the chuck 5, and a movable plate 7 is fixedly installed on the bottom of the chuck 5 by the bolt 6. A ejector pin 8 is fixedly installed on the top of the movable plate 7, and a spring 9 is fixedly installed on the outside of the ejector pin 8. The ejector pin 8 passes through the slot 13 and extends to the inner side of the slot 2 1405. The bolt 6 passes through the chuck 5 and extends to the inside of the movable plate 7. The advantage is that through the design of the ejector pin 8, when the mold needs to be ejected, the chuck 5 can be driven by the cylinder 4 to move up and down. At the same time, the chuck 5 can make the movable plate 7 and the ejector pin 8 move up and down, and the mold in the mold cavity 1404 can be ejected.

[0035] Specifically, the injection nozzle 16 and the fixed mold assembly 14 are located on the same vertical horizontal line, one end of the spring 9 is fixedly installed on the movable plate 7, and the other end of the spring 9 is fixedly installed on the fixed plate 10. The advantage is that, through the design of the spring 9, when ejection is performed, the spring 9 can be brought into contact with the fixed plate 10, thereby causing it to deform. Subsequently, when a failure occurs in the cylinder 4, the internal pressure of the cylinder 4 can be eliminated, and the spring 9 can be reset, which can drive the movable plate 7 and the ejector pin 8 to reset, thereby avoiding the inability to retract the ejector pin 8 when the cylinder 4 cannot be retracted, thereby improving the diversity of the overall device.

[0036] Working principle: When in use, through the cooperation of positioning groove 1 1402, positioning groove 2 1403, positioning column 1 11 and positioning column 2 12, when installing the fixed mold assembly 14, positioning column 1 11 and positioning column 2 12 can pass through positioning groove 1 1402 and positioning groove 2 1403 to play a positioning role, and when installing the movable mold 15, it can also play a positioning role for the movable mold 15, which can facilitate the rapid installation of the entire mold. Through the design of the slide 1406, when performing injection molding, the mold cavity 14 can be 04, so that the stopper 1409 blocks the slide 1406 to avoid blockage. After the processing is completed, the limit frame 1408 can be taken out first to make the stopper 1409 away from the slide 1406, and then the sliding rod 1407 can be pushed to make one end of the chamfered design contact with the top of the plastic mold, so that the mold can be separated from the mold cavity 1404, which can facilitate the rapid removal of the mold. Through the design of the four slides 1406, the sliding rod 1407 and the stopper 1409, the mold can be removed from both sides. The mold inside the mold cavity 1404 is removed from the side, which can avoid unilateral removal that easily causes damage to the mold, and can improve the diversity of the overall mold. Through the design of the insertion rod 18, during normal processing, the insertion rod 18 can be located inside the fixed plate 10. When blockage occurs, the insertion rod 18 can be pulled out, and then the slot 13 can be cleaned to make the slot 13 unobstructed, which can facilitate dealing with different situations. Through the design of the ejector 8, when the mold needs to be ejected, the chuck 5 can be driven up and down by the cylinder 4. At the same time, the chuck 5 can make the movable plate 7 and the ejector 8 move up and down to eject the mold in the mold cavity 1404. Through the design of the spring 9, when ejection is performed, the spring 9 can be brought into contact with the fixed plate 10, causing it to deform. Then, when the cylinder 4 fails, there can be no pressure inside the cylinder 4, and the spring 9 can be reset, which can drive the movable plate 7 and the ejector 8 to reset, avoiding the inability to retract the ejector 8 when the cylinder 4 cannot be retracted, and can improve the diversity of the overall device.

[0037] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic injection mold anti-blocking ejection structure, comprising a base (1), characterized in that: The base (1) is fixedly mounted with a support column (2) at the bottom, the base (1) is fixedly mounted with a fixed block (3) at the top, the base (1) is fixedly mounted with a cylinder (4) at the bottom, the output shaft of the cylinder (4) is fixedly mounted with a chuck (5), the top of the fixed block (3) is fixedly mounted with a fixed plate (10), the top of the fixed plate (10) is fixedly mounted with a positioning column 1 (11) and a positioning column 2 (12), the top of the fixed plate (10) is provided with a slot 1 (13), the top of the fixed plate (10) is fixedly mounted with a fixed mold assembly (14), the top of the fixed mold assembly (14) is provided with a movable mold (15), the top of the movable mold (15) is fixedly mounted with an injection nozzle (16), and the outer side of the fixed block (3) is fixedly mounted with a connecting block (17) by screws.

2. The anti-blocking ejection structure for a plastic injection mold according to claim 1, characterized in that: The fixed mold assembly (14) includes a fixed module (1401), a positioning groove 1 (1402) and a positioning groove 2 (1403) are provided on the top of the fixed module (1401), a mold cavity (1404) is provided on the inner side of the top of the fixed module (1401), and a slot 2 (1405) is provided through the top of the mold cavity (1404), the positioning groove 1 (1402) is adapted to the positioning column 1 (11), and the positioning groove 2 (1403) is adapted to the positioning column 2 (12).

3. The anti-blocking ejection structure for a plastic injection mold according to claim 2, characterized in that: A slideway (1406) is provided inside the fixed module (1401), and a sliding rod (1407) is slidably connected inside the slideway (1406). A limit frame (1408) is plugged and installed on the top of the fixed module (1401), and a stop block (1409) is fixedly installed on the bottom of the limit frame (1408). The size of the stop block (1409) is the same as that of the slideway (1406), and the side of the sliding rod (1407) close to the mold cavity (1404) adopts a chamfered design.

4. The anti-blocking ejection structure for a plastic injection mold according to claim 3, characterized in that: The slideway (1406), the sliding rod (1407) and the stopper (1409) are provided in two identical groups, and each group of the slideway (1406), the sliding rod (1407) and the stopper (1409) is provided with two identical groups, and the two groups of the slideway (1406), the sliding rod (1407) and the stopper (1409) are symmetrically distributed about the center line of the fixed module (1401).

5. The anti-blocking ejection structure for a plastic injection mold according to claim 4, characterized in that: An insert rod (18) is installed on the inner side of the fixing plate (10), and the insert rod (18) is connected to the slot 1 (13).

6. The anti-blocking ejection structure for a plastic injection mold according to claim 5, characterized in that: A bolt (6) is provided through the top of the chuck (5), a movable plate (7) is fixedly installed on the bottom of the chuck (5) through the bolt (6), a thimble (8) is fixedly installed on the top of the movable plate (7), a spring (9) is fixedly installed on the outside of the thimble (8), the thimble (8) passes through the slot one (13) and extends to the inside of the slot two (1405), and the bolt (6) passes through the chuck (5) and extends to the inside of the movable plate (7).

7. The anti-blocking ejection structure for a plastic injection mold according to claim 6, characterized in that: The injection nozzle (16) and the fixed mold assembly (14) are located on the same vertical horizontal line, one end of the spring (9) is fixedly mounted on the movable plate (7), and the other end of the spring (9) is fixedly mounted on the fixed plate (10).

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