Stripping mechanism of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, in particular to a stripping mechanism of an injection molding machine, which comprises a base, symmetrically distributed die holders are arranged above the base, injection molding cavities are arranged on opposite sides of the die holders, stripping components are arranged on the die holders, and each stripping component comprises an inflation box, a sliding seat and a push plate. The inflation boxes are arranged in the mold base in an array shape, a plurality of air injection pipes communicating with the injection molding cavity are arranged on the inflation boxes, the sliding base is arranged in the inflation boxes, a demolding mechanism is arranged on the left side of the sliding base, and the demolding mechanism comprises a vibration plate, an ejector rod and a miniature vibrator; and the push plate is arranged on the side away from the injection molding cavity, a plurality of evenly-distributed push rods are arranged on the push plate, and all the push rods penetrate through the inflation box and are fixedly connected with the sliding base. Through a mode of combining vibration and air flow, the demoulding efficiency of an injection product is improved, and the product is effectively prevented from being damaged and deformed.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, and particularly to a blanking mechanism of an injection molding machine. Background Technique

[0002] The blanking mechanism of an injection molding machine is the part used to separate the finished product from the mold during the injection molding process. Usually, a demolding mechanism is adopted to push the product to separate from the moving mold or fixed mold of the mold, and the product is safely and effectively taken out of the mold for the next operation or packaging.

[0003] In the prior art, a Chinese patent with the publication number CN219600288U, a plastic bottle injection molding machine with a demolding mechanism, adopts the scheme of "including an extrusion device, an injection device, a blow molding device and a mold clamping device. The mold clamping device includes a moving base, the surface of the moving base is symmetrically and slidably connected with mounting plates, one side of the mounting plate is fixedly connected with a mold, a mold cavity is opened on one side of the mold, and a demolding mechanism is arranged on the mounting plate". This scheme effectively improves the demolding efficiency of plastic bottles, avoids adhesion between the mold cavity of the mold and the plastic bottles, and thus improves the production efficiency of plastic bottles.

[0004] However, there are still some deficiencies in the above scheme. For example, when the demolding mechanism ejects and demolds the plastic bottle, it is easy to generate strong extrusion on the local part of the plastic bottle, resulting in local deformation of the plastic. At the same time, there is a lack of buffering for the plastic product during the blanking process, and it is easy to damage the product due to excessive force. In view of this, the utility model proposes a blanking mechanism of an injection molding machine. Summary of the Invention

[0005] The purpose of the utility model is to provide a blanking mechanism of an injection molding machine, which can eject evenly at multiple points, improve the separation efficiency by combining vibration and air flow, and reduce product damage, so as to solve the problem of easy strong extrusion on the local part of the plastic bottle causing product damage and deformation proposed in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A blanking mechanism of an injection molding machine includes a base, symmetrically distributed mold bases are arranged above the base, injection cavities are opened on the opposite sides of the mold bases, a blanking component is arranged on the mold bases, the blanking component includes an air inflation box, a sliding seat and a push plate. The air inflation boxes are arranged in an array inside the mold bases, a plurality of injection pipes communicating with the injection cavities are arranged on the air inflation boxes, the sliding seat is arranged inside the air inflation box, a demolding mechanism is arranged on the left side of the sliding seat, the demolding mechanism includes a vibration plate, a top rod and a micro vibrator, the push plate is arranged on the side far from the injection cavity, a plurality of uniformly distributed push rods are arranged on the push plate, and each push rod penetrates through the air inflation box and is fixedly connected with the sliding seat.

[0008] As a preferred technical solution, three groups of uniformly distributed sliding grooves are provided on the base, a sliding block slidably connected to the sliding grooves is arranged at the bottom of the mold base, a bidirectional screw rod is arranged at the center of the base and inside the sliding grooves, the threaded section of the bidirectional screw rod is threadedly connected to the sliding block at the center of the bottom of the mold base, and a motor for driving the bidirectional screw rod to rotate is installed on the right side of the base.

[0009] As a preferred technical solution, the inside of the inflatable box is a hollow structure, a connecting pipe is arranged between several inflatable boxes for communication, and an air pump communicated with the inflatable box is installed on the front side of the mold base.

[0010] As a preferred technical solution, an air injection head is arranged at the end of the air injection pipe, and several uniformly distributed grooves are arranged on the air injection head.

[0011] As a preferred technical solution, the sliding seat is slidably arranged inside the inflatable box, springs are arranged between the vibrating plate and the sliding seat and near the four corners, rubber columns are arranged inside the springs, both ends of the rubber columns are respectively connected to the sliding seat and the vibrating plate, and the micro-vibrator is installed at the center of the vibrating plate.

[0012] As a preferred technical solution, the ejector rod is arranged inside the air injection pipe and has no contact with the air injection pipe. One end of the ejector rod is fixedly connected to the vibrating plate. A connecting head is arranged at the other end of the ejector rod and inside the air injection head. A top plate is connected to the ejector rod inside the injection cavity, and a movable head movably connected to the connecting head is arranged on the top plate.

[0013] As a preferred technical solution, a mounting frame is welded and fixed on the mold base outside the push plate, and a hydraulic cylinder for pushing the push plate to move is installed on the mounting frame.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. By arranging a demolding mechanism, through the mutual cooperation of the vibrating plate, the ejector rod and the micro-vibrator, the top plate can drive the product to vibrate at high frequency at multiple points. At the same time, through the mutual cooperation of the inflatable box and the air injection pipe, high-pressure air flows along the contact surface between the top plate and the injection-molded product, realizing a combination of vibration and air flow, improving the demolding efficiency of the injection-molded product, and effectively avoiding damage and deformation of the product.

[0016] 2. By arranging springs and rubber columns to make a flexible connection between the vibrating plate and the sliding seat, it can ensure that the vibrating plate has a good vibration effect within a certain range, and play a good buffering role when the push rod pushes the sliding seat to eject, avoiding damage to the product due to excessive ejection force. Brief Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the mold base structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the stripping component structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the internal structure of the inflatable box of the present invention;

[0022] Figure 5 It is a schematic diagram of the demolding mechanism structure of the present invention.

[0023] In the figure: 1. Base; 11. Slide groove; 12. Bidirectional screw; 13. Motor; 2. Mold base; 21. Injection cavity; 22. Slide block; 3. Inflatable box; 31. Injection pipe; 32. Injection head; 33. Connecting pipe; 34. Air pump; 4. Slide seat; 41. Vibration plate; 42. Spring; 43. Rubber column; 44. Ejector rod; 441. Connector; 45. Top plate; 451. Movable head; 46. Miniature vibrator; 5. Push plate; 51. Push rod; 52. Mounting frame; 53. Hydraulic cylinder. Detailed Embodiments

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0025] According to the appendix Figures 1-5As shown in the figure, an ejection mechanism of an injection molding machine is provided in an embodiment of the present utility model, which includes a base 1. Above the base 1, symmetrically distributed mold bases 2 are provided. Injection cavities 21 are formed on the opposite sides of the mold bases 2. A demolding assembly is arranged on the mold bases 2. The demolding assembly includes an air inflation box 3, a sliding seat 4, and a push plate 5. The air inflation boxes 3 are arranged in an array inside the mold bases 2. A number of air injection pipes 31 communicating with the injection cavities 21 are provided on the air inflation boxes 3. The sliding seat 4 is arranged inside the air inflation box 3. A demolding mechanism is arranged on the left side of the sliding seat 4. The demolding mechanism includes a vibrating plate 41, a ejector rod 44, and a micro vibrator 46. The push plate 5 is arranged on the side away from the injection cavity 21. A number of uniformly distributed push rods 51 are provided on the push plate 5. Each push rod 51 penetrates through the air inflation box 3 and is fixedly connected to the sliding seat 4.

[0026] After the injection molding is completed, the micro vibrator 46 can drive the vibrating plate 41 and the ejector rod 44 to perform high-frequency vibration, so as to drive the product to perform high-frequency vibration at multiple points inside the injection cavity 21, ensuring uniform separation of the injection molded product from the mold base 2. At the same time, through the mutual cooperation of the air inflation box 3 and the air injection pipes 31, high-pressure air can be delivered to the contact part between the ejector rod 44 and the injection molded product. Under the action of the high-pressure gas, the separation efficiency of the injection molded product from the mold base 2 is improved. After that, the push plate 5 is pushed to move the push rod 51, so that the push rod 51 pushes the sliding seat 4 to move, and drives the ejector rod 44 to push the injection molded product, so that the injection molded product is separated from the mold base 2, facilitating the rapid removal of the formed product.

[0027] Three groups of uniformly distributed sliding grooves 11 are formed on the base 1. Sliding blocks 22 slidably connected to the sliding grooves 11 are arranged at the bottom of the mold base 2. A bidirectional screw 12 is arranged at the center of the base 1 and inside the sliding grooves 11. The threaded section of the bidirectional screw 12 is threadedly connected to the sliding block 22 at the center of the bottom of the mold base 2. A motor 13 for driving the bidirectional screw 12 to rotate is installed on the right side of the base 1.

[0028] When the motor 13 operates to drive the bidirectional screw 12 to rotate, the bidirectional screw 12 rotates relative to the sliding block 22, so that the sliding block 22 drives the mold base 2 to move, thus facilitating the mold opening and closing operation.

[0029] The inside of the air inflation box 3 is a hollow structure. Connecting pipes 33 are arranged between several air inflation boxes 3 for communication. An air pump 34 communicating with the air inflation box 3 is installed on the front side of the mold base 2. An air injection head 32 is arranged at the end of the air injection pipe 31. A number of uniformly distributed grooves are formed on the air injection head 32.

[0030] During demolding, the air pump 34 is operated and cooperates with the connecting pipe 33 to deliver high-pressure air into the inside of each air inflation box 3, and the air flows to the air injection head 32 through the air injection pipes 31. Then, the gas is evenly diffused through the grooves, facilitating the gas to flow along the contact surface between the top plate 45 and the injection molded product, and improving the demolding efficiency of the injection molded product.

[0031] The sliding seat 4 is slidably arranged inside the inflatable box 3. Springs 42 are arranged between the vibrating plate 41 and the sliding seat 4 and near the four corners. Rubber columns 43 are arranged inside the springs 42. Two ends of the rubber columns 43 are respectively connected to the sliding seat 4 and the vibrating plate 41. The micro-vibrator 46 is installed at the center of the vibrating plate 41.

[0032] The ejector rod 44 is arranged inside the injection pipe 31 and has no contact with the injection pipe 31. One end of the ejector rod 44 is fixedly connected to the vibrating plate 41. A connecting head 441 is arranged at the other end of the ejector rod 44 and inside the injection head 32. A top plate 45 is connected to the ejector rod 44 inside the injection cavity 21. A movable head 451 which is movably connected to the connecting head 441 is arranged on the top plate 45.

[0033] When demolding, running the micro-vibrator 46 can drive the vibrating plate 41 to vibrate. Since the vibrating plate 41 and the sliding seat 4 are flexibly connected through the springs 42 and the rubber columns 43, it can ensure that the vibrating plate 41 has a good vibration effect within a certain range, and when the push rod 51 pushes the sliding seat 4 to eject, it plays a good buffering role to avoid damage to the product caused by excessive ejection force. During the vibration of the vibrating plate 41, it can drive the ejector rod 44 and the top plate 45 to vibrate. At the same time, since the top plate 45 is movably connected to the connecting head 441 through the movable head 451, it ensures that the top plate 45 can drive the injection product to vibrate well.

[0034] An installation frame 52 is welded and fixed on the mold base 2 and outside the push plate 5. A hydraulic cylinder 53 for pushing the push plate 5 to move is installed on the installation frame 52.

[0035] During the demolding process, running the hydraulic cylinder 53 to push the push plate 5 to move can make the push plate 5 drive the push rod 51 to move, and make the push rod 51 push the sliding seat 4 to move, so that the vibrating plate 41 drives the ejector rod 44 and the top plate 45 to eject the injection product, thus realizing rapid demolding.

[0036] When the dematerializing mechanism of an injection molding machine of the present utility model is in use, first, run the motor 13 to drive the bidirectional screw 12 to rotate, make the bidirectional screw 12 and the slider 22 move relative to each other, and drive the two groups of mold bases 2 to gradually separate. At the same time, run the micro-vibrator 46 to drive the vibrating plate 41 to vibrate at a high frequency. Under the action of the springs 42 and the rubber columns 43, the vibration effect is improved, and the vibrating plate 41 drives the ejector rod 44 and the top plate 45 to vibrate, and then multiple points drive the product to vibrate at a high frequency, ensuring uniform separation of the injection product from the mold base 2;

[0037] Further, the air pump 34 is operated to cooperate with each other through a plurality of connecting pipes 33 to deliver high-pressure air into the interior of each inflatable box 3. After that, the air is evenly diffused through the groove at the end of the air injection pipe 31, so that the gas flows along the contact surface between the top plate 45 and the injection-molded product, improving the demolding efficiency of the injection-molded product. After that, the hydraulic cylinder 53 is operated to push the push plate 5 to move, and the push rod 51 is used to push the sliding seat 4 to move, so that the vibrating plate 41 drives the ejector rod 44 and the top plate 45 to eject the injection-molded product, thereby realizing rapid demolding.

[0038] 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 by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present invention, which are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stripping mechanism for an injection molding machine, comprising a base (1), characterized in that: A symmetrically distributed mold base (2) is provided above the base (1), an injection cavity (21) is provided on the opposite side of the mold base (2), and a stripping assembly is provided on the mold base (2), the stripping assembly includes an air filling box (3), a slide seat (4) and a push plate (5), the air filling box (3) is arranged in an array inside the mold base (2), the air filling box (3) is provided with a plurality of air injection pipes (31) connected to the injection cavity (21), the slide seat (4) is arranged inside the air filling box (3), a stripping mechanism is provided on the left side of the slide seat (4), the stripping mechanism includes a vibration plate (41), a push rod (44) and a micro vibrator (46), the push plate (5) is arranged on a side away from the injection cavity (21), and a plurality of evenly distributed push rods (51) are provided on the push plate (5), each of the push rods (51) passes through the air filling box (3) and is fixedly connected to the slide seat (4).

2. The stripping mechanism of the injection molding machine according to claim 1, characterized in that: The base (1) is provided with three groups of evenly distributed slide grooves (11); the bottom of the mold base (2) is provided with a slider (22) slidably connected to the slide groove (11); a bidirectional screw (12) is provided at the center of the base (1) and on the inner side of the slide groove (11); the threaded section of the bidirectional screw (12) is threadedly connected to the slider (22) at the center of the bottom of the mold base (2); and a motor (13) for driving the bidirectional screw (12) to rotate is installed on the right side of the base (1).

3. The stripping mechanism of the injection molding machine according to claim 1, characterized in that: The interior of the inflation box (3) is a hollow structure, and a connecting pipe (33) is provided between a plurality of the inflation boxes (3) for communication. An air pump (34) connected to the inflation box (3) is installed on the front side of the mold base (2).

4. The stripping mechanism of the injection molding machine according to claim 3, characterized in that: An air injection head (32) is provided at the end of the air injection pipe (31), and a plurality of evenly distributed grooves are provided on the air injection head (32).

5. The stripping mechanism of the injection molding machine according to claim 1, characterized in that: The slide seat (4) is slidably arranged on the inner side of the inflatable box (3); springs (42) are arranged between the vibration plate (41) and the slide seat (4) and near the four corners; a rubber column (43) is arranged on the inner side of the spring (42); the two ends of the rubber column (43) are respectively connected to the slide seat (4) and the vibration plate (41); and the micro vibrator (46) is installed at the center of the vibration plate (41).

6. The stripping mechanism of the injection molding machine according to claim 1, characterized in that: The push rod (44) is arranged on the inner side of the gas injection pipe (31) and has no contact with the gas injection pipe (31); one end of the push rod (44) is fixedly connected to the vibration plate (41); the other end of the push rod (44) is located on the inner side of the gas injection head (32) and is provided with a connecting head (441); the push rod (44) is connected to a top plate (45) located on the inner side of the injection cavity (21); and the top plate (45) is provided with a movable head (451) movably connected to the connecting head (441).

7. The stripping mechanism of the injection molding machine according to claim 1, characterized in that: A mounting frame (52) is welded and fixed on the die base (2) and located outside the push plate (5), and a hydraulic cylinder (53) for pushing the push plate (5) to move is installed on the mounting frame (52).

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