Laminated mold structure for injection molding

Abstract

The utility model discloses a laminated mold structure for injection molding, which comprises a connecting plate, the front surface of the connecting plate is fixedly connected with a bearing block, the upper surface of the bearing block is fixedly connected with a stepping motor, the output end of the stepping motor is fixedly connected with a bidirectional threaded screw rod, and the output end of the bidirectional threaded screw rod is fixedly connected with a screw rod. The outer surface of the bidirectional threaded lead screw is in threaded connection with two sliding blocks, two upper connecting blocks are fixedly connected to one sliding block, two lower connecting blocks are fixedly connected to the other sliding block, and the two upper connecting blocks are fixedly connected with the same upper die plate. Through the arrangement of the stepping motor, the two-way threaded lead screw, the sliding block and other structures, according to the scheme, mold opening and mold closing operation of the mold is mechanically controlled through the motor, and the motor can provide stable driving force, so that it can be ensured that all mold plates are tightly closed, and then the situation that the quality of injection molded products is affected due to the fact that cavities are not tightly closed can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to a stacked mold structure for injection molding. Background Technology

[0002] Stacked molds are a type of high-efficiency mold device used in injection molding. They have two or more cavities and, through a special flow channel system and mold structure, allow the molten plastic to be filled into each cavity simultaneously and evenly.

[0003] In the existing technology, the key to setting up the stacked mold structure lies in the design of the mold opening and closing linkage system to ensure that the cavities can open or close synchronously in one mold opening and closing action, ensuring that all cavities are closed in place, and ensuring the stable quality of injection molded products. If the linkage mechanism is unstable, some cavities will not close tightly, thus affecting the quality of the injection molded products. Utility Model Content

[0004] The purpose of this utility model is to provide a stacked mold structure for injection molding, which uses a motor to mechanically control the mold opening and closing operations. Because the motor can provide a stable driving force, it can ensure that the mold plates are tightly closed, thereby preventing the cavity from not closing tightly and affecting the quality of the injection molded product.

[0005] To achieve the above objectives, a stacked mold structure for injection molding is provided, comprising a connecting plate, a bearing block fixedly connected to the front surface of the connecting plate, a stepper motor fixedly connected to the upper surface of the bearing block, a bidirectional threaded screw fixedly connected to the output end of the stepper motor, two sliders threadedly connected to the outer surface of the bidirectional threaded screw, two upper connecting blocks fixedly connected to one slider, two lower connecting blocks fixedly connected to the other slider, a common upper template fixedly connected to the two upper connecting blocks, a common lower template fixedly connected to the two lower connecting blocks, multiple connecting rods fixedly connected to the upper template, two guide blocks fixedly connected to the connecting rods, a common limiting block fixedly and slidably connected to the two guide blocks, and a middle template fixedly connected to the side surface of the limiting block.

[0006] According to the aforementioned stacked mold structure for injection molding, the upper template has an injection port.

[0007] According to the aforementioned stacked mold structure for injection molding, the connecting plate is provided with two docking grooves that are symmetrically distributed.

[0008] According to the aforementioned stacked mold structure for injection molding, the support block is provided with a movable groove, and the outer surface of the slider is slidably connected to the movable groove.

[0009] According to the aforementioned stacked mold structure for injection molding, a limiting groove is provided on the limiting block, and the outer surface of the guide block is slidably connected to the limiting groove.

[0010] According to the aforementioned stacked mold structure for injection molding, the outer surface of the connecting rod is in contact with the limiting block, and the lower surface of the upper mold plate is in contact with the upper surface of the middle mold plate.

[0011] According to the aforementioned stacked mold structure for injection molding, the number of limiting blocks is four, and they are distributed in a rectangular array.

[0012] According to the aforementioned stacked mold structure for injection molding, the outer surface of the bidirectional threaded lead screw is rotatably connected to the bearing block, and the upper surface of the lower mold plate is in contact with the lower surface of the middle mold plate.

[0013] The above solution has the following advantages: By setting up a stepper motor, a bidirectional threaded screw and a slider, the solution uses a motor to mechanically control the mold opening and closing operations. Because the motor can provide a stable driving force, it can ensure that the mold plates are tightly closed, thereby preventing the cavity from not closing tightly and affecting the quality of the injection molded product.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the overall structure of a stacked mold for injection molding according to the present invention;

[0017] Figure 2 This is a schematic diagram of the cross-sectional portion of the support block of a stacked mold structure for injection molding according to the present invention;

[0018] Figure 3 This is a schematic diagram of the cross-sectional portion of the connecting rod of a stacked mold structure for injection molding according to the present invention;

[0019] Figure 4 This is a schematic diagram of the cross-sectional portion of the limiting block of a stacked mold structure for injection molding according to this utility model.

[0020] Legend:

[0021] 1. Connecting plate; 2. Bearing block; 3. Stepper motor; 4. Bidirectional threaded screw; 5. Slider; 6. Upper connecting block; 7. Lower connecting block; 8. Upper template; 9. Lower template; 10. Connecting rod; 11. Guide block; 12. Limiting block; 13. Middle template; 14. Injection port; 15. Docking groove; 16. Moving groove; 17. Limiting groove. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figure 1-4 This utility model discloses a stacked mold structure for injection molding, comprising a connecting plate 1, a bearing block 2 fixedly connected to the front surface of the connecting plate 1, a stepper motor 3 fixedly connected to the upper surface of the bearing block 2, a bidirectional threaded screw 4 fixedly connected to the output end of the stepper motor 3, two sliders 5 threadedly connected to the outer surface of the bidirectional threaded screw 4, two upper connecting blocks 6 fixedly connected to one slider 5, two lower connecting blocks 7 fixedly connected to the other slider 5, a common upper template 8 fixedly connected to the two upper connecting blocks 6, a common lower template 9 fixedly connected to the two lower connecting blocks 7, multiple connecting rods 10 fixedly connected to the upper template 8, two guide blocks 11 fixedly connected to the connecting rods 10, and sliding blocks 11 fixedly connected to the two guide blocks 11. The moving connection is connected to the same limiting block 12. The side surface of the limiting block 12 is fixedly connected to the middle template 13. The upper template 8 is provided with an injection port 14. The connecting plate 1 is provided with a docking groove 15. There are two docking grooves 15 and they are symmetrically distributed. The bearing block 2 is provided with a moving groove 16. The outer surface of the slider 5 is slidably connected to the moving groove 16. The limiting block 12 is provided with a limiting groove 17. The outer surface of the guide block 11 is slidably connected to the limiting groove 17. The outer surface of the connecting rod 10 is in contact with the limiting block 12. The lower surface of the upper template 8 is in contact with the upper surface of the middle template 13. There are four limiting blocks 12 and they are distributed in a rectangular array. The outer surface of the bidirectional threaded screw 4 is rotatably connected to the bearing block 2. The upper surface of the lower template 9 is in contact with the lower surface of the middle template 13.

[0024] It should be noted that the stepper motor 3 of this utility model is controlled by a controller. The control circuit of the controller can be easily programmed by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail. Therefore, by controlling the forward and reverse rotation of the output terminal of the stepper motor 3 through the controller, the mold opening or closing operation can be realized. During the mold opening process, the connecting rod 10 and the guide block 11 will first move within the limiting groove 17 on the limiting block 12 as they move upward. When the guide block 11 can no longer move, it will drive the middle template 13 to move upward through the limiting block 12. During the mold closing process, the connecting rod 10 and the guide block 11 will move within the limiting groove 17 on the limiting block 12 as they move downwards. When the guide block 11 can no longer move, it will drive the middle mold plate 13 to move downwards through the limiting block 12, ensuring that the mold plates can be tightly closed. Moreover, after the stepper motor 3 stops, its output shaft will remain in the current position. This is because the stator winding of the stepper motor 3 will still generate a certain static holding torque when it is not energized, which can prevent the motor rotor from rotating arbitrarily due to external forces, thereby achieving self-locking and preventing the slider 5 and the structure on the slider 5 from moving again. Through the docking groove 15 reserved on the connecting plate 1, the entire structure can be connected to the injection molding equipment or other objects.

[0025] Working principle: After starting the stepper motor 3 on the bearing block 2, the started stepper motor 3 drives the bidirectional threaded screw 4 to rotate, thereby causing the rotating bidirectional threaded screw 4 to drive the two sliders 5 to move away from each other. At this time, one of the moving sliders 5 will drive the upper connecting block 6, the upper template 8, the connecting rod 10, and the guide block 11 to move upward, while the other slider 5 will drive the lower template 9 to move downward, realizing the mold opening operation. When the stepper motor 3 is started and the output end of the stepper motor 3 is controlled to rotate in the opposite direction, the bidirectional threaded screw 4 will rotate in the opposite direction, thereby causing the rotating bidirectional threaded screw 4 to drive the two sliders 5 to move closer to each other. At this time, one of the moving sliders 5 will drive the upper connecting block 6, the upper template 8, the connecting rod 10, and the guide block 11 to move downward, while the other slider 5 will drive the lower template 9 to move upward, thus starting the mold closing operation. When the moved upper template 8 and lower template 9 are in contact with the middle template 13, the mold closing operation is completed.

[0026] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A stacked mold structure for injection molding, comprising: A connecting plate (1) is characterized in that a bearing block (2) is fixedly connected to the front surface of the connecting plate (1), a stepper motor (3) is fixedly connected to the upper surface of the bearing block (2), a bidirectional threaded screw (4) is fixedly connected to the output end of the stepper motor (3), two sliders (5) are threadedly connected to the outer surface of the bidirectional threaded screw (4), two upper connecting blocks (6) are fixedly connected to one of the sliders (5), two lower connecting blocks (7) are fixedly connected to the other slider (5), the same upper template (8) is fixedly connected to the two upper connecting blocks (6), the same lower template (9) is fixedly connected to the two lower connecting blocks (7), a plurality of connecting rods (10) are fixedly connected to the upper template (8), two guide blocks (11) are fixedly connected to the connecting rods (10), the same limiting block (12) is fixedly slidably connected to the two guide blocks (11), and a middle template (13) is fixedly connected to the side surface of the limiting block (12).

2. The stacked mold structure for injection molding according to claim 1, characterized in that, The upper template (8) has an injection port (14).

3. The stacked mold structure for injection molding according to claim 1, characterized in that, The connecting plate (1) has a docking groove (15), and there are two docking grooves (15) that are symmetrically distributed.

4. The stacked mold structure for injection molding according to claim 1, characterized in that, The support block (2) has a moving groove (16), and the outer surface of the slider (5) is slidably connected to the moving groove (16).

5. A stacked mold structure for injection molding according to claim 1, characterized in that, The limiting block (12) has a limiting groove (17), and the outer surface of the guide block (11) is slidably connected to the limiting groove (17).

6. A stacked mold structure for injection molding according to claim 1, characterized in that, The outer surface of the connecting rod (10) is in contact with the limiting block (12), and the lower surface of the upper template (8) is in contact with the upper surface of the middle template (13).

7. A stacked mold structure for injection molding according to claim 1, characterized in that, The number of the limiting blocks (12) is four, and they are distributed in a rectangular array.

8. A stacked mold structure for injection molding according to claim 1, characterized in that, The outer surface of the bidirectional threaded screw (4) is rotatably connected to the bearing block (2), and the upper surface of the lower template (9) is in contact with the lower surface of the middle template (13).

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