Double-screw electric ejection device of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, and provides a double-screw electric ejection device of an injection molding machine, which comprises a controller, a center plate and an ejector pin push plate, a power mechanism is arranged on one side of the center plate, a center ejector rod is arranged in the middle of one side of the ejector pin push plate, and four auxiliary ejector pins are arranged around the center ejector rod. The four auxiliary ejector pins are distributed in a circumferential array mode, a distance measuring sensor is arranged on the other side of the ejector pin push plate, and two ejector pin guide rods and two ejector pin lead screws are arranged on one side of the ejector pin push plate. According to the arrangement of the structure, when the motor in the power mechanism drives the ejector pin lead screw to rotate, the ejector pin lead screw drives the ejector pin push plate to linearly move back and forth on the ejector pin guide rod, the radial force generated by the ejector pin push plate is borne by the ejector pin guide rod, the radial force borne by the ejector pin lead screw is reduced, the phenomenon that the ejector pin lead screw is broken is avoided, and the service life of the ejector pin is prolonged. Therefore, the purpose that the product is stably ejected out when the device works is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, and specifically relates to a double-screw electric ejection device of an injection molding machine. Background Art

[0002] With the increasing demand for plastic products, the efficiency of plastic product production has become particularly important. Product ejection is an important part of the injection molding machine production process. Its function is to eject the product from the mold cavity. Therefore, the stability, ejection speed, ejection time and ejection stroke of the ejection device will directly affect the production cycle. In order to improve production efficiency, a stable and reliable ejection device is essential. Therefore, a double-screw electric ejection device for injection molding machine is proposed. Utility Model Content

[0003] The utility model provides a double-screw electric ejector device for an injection molding machine, which solves the problem of unstable ejection of the ejector device in the related technology.

[0004] The technical scheme of the utility model is as follows: a double-screw electric ejector device for an injection molding machine, comprising: a controller, a center plate, and an ejector push plate, a power mechanism is arranged on one side of the center plate, a center ejector rod is arranged in the middle of one side of the ejector push plate, four auxiliary ejectors are arranged around the center ejector rod, and the four auxiliary ejectors are distributed in a circular array, a distance measuring sensor is arranged on the other side of the ejector push plate, two ejector guide rods and two ejector screws are arranged on one side of the ejector push plate, and the two ejector screws are diagonally distributed, the two ejector guide rods are slidably connected to the ejector push plate, and the two ejector screws are threadedly connected to the ejector push plate;

[0005] The controller is electrically connected to the distance measuring sensor.

[0006] Preferably, the four auxiliary ejector pins are distributed in a circle with the central ejector rod as the center.

[0007] Preferably, the two ejector guide rods and the two ejector lead screws are respectively distributed diagonally.

[0008] Preferably, the power mechanism includes a motor fixedly mounted on one side of the center plate, an output end of the motor movably passes through the center plate and is fixedly connected to a second synchronous wheel, and the motor is electrically connected to the controller.

[0009] Preferably, a tensioning wheel is provided on the other side of the center plate, and one end of the two ejector screws movably passes through the ejector push plate and is fixedly connected to a first synchronous wheel.

[0010] Preferably, a synchronous belt is tensionedly connected between the second synchronous wheel, the tension wheel and the first synchronous wheel.

[0011] Preferably, a slide groove is provided on one side of the center plate, a slider is slidably connected inside the slide groove, one side of the slider is rotationally connected to the tensioning wheel, and an electric telescopic rod is fixedly installed on the inner bottom wall of the slide groove.

[0012] The working principle and beneficial effects of the utility model are:

[0013] The arrangement of this structure can make the motor in the power mechanism drive the ejector screw to rotate, and the ejector screw drives the ejector push plate to make a reciprocating linear motion on the ejector guide rod. The radial force generated by the ejector push plate is borne by the ejector guide rod, thereby reducing the radial force on the ejector screw and avoiding the ejector screw from breaking, thereby achieving the purpose of stably ejecting the product when the device is working;

[0014] 2. The distance measuring sensor is used to detect the ejection distance. When the set distance is detected by the distance measuring sensor, the information is transmitted to the controller. The controller controls the motor in the power mechanism to turn off and stop ejection, thereby achieving the purpose of adjustable ejection distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 This is a schematic diagram of the ejection device mechanism of the utility model implementation case;

[0017] Figure 2 This is a structural diagram of the ejector pin portion of the ejector device in the implementation case of the utility model;

[0018] Figure 3 This is a partial cross-sectional structural diagram of the ejection device of the embodiment of the utility model;

[0019] Figure 4 It is a schematic diagram of a partial cross-sectional structure of the ejector push plate of the utility model.

[0020] In the figure: 1. center plate; 2. power mechanism; 3. synchronous belt; 4. first synchronous wheel; 5. ejector screw; 6. ejector push plate; 7. distance sensor; 8. ejector guide rod; 9. center ejector rod; 10. auxiliary ejector; 11. tensioning wheel; 12. electric telescopic rod; 13. motor; 14. second synchronous wheel; 15. slide groove; 16. slider. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] See also Figure 1 - Figure 4 , a double-screw electric ejector device for an injection molding machine, comprising: a controller, a center plate 1, and an ejector push plate 6, a power mechanism 2 is arranged on one side of the center plate 1, a center ejector rod 9 is arranged in the middle of one side of the ejector push plate 6, four auxiliary ejectors 10 are arranged around the center ejector rod 9, and the four auxiliary ejectors 10 are distributed in a circular array, a distance measuring sensor 7 is arranged on the other side of the ejector push plate 6, two ejector guide rods 8 and two ejector screws 5 are arranged on one side of the ejector push plate 6, and the two ejector guide rods 8 are diagonally distributed, and the two ejector screws 5 are connected to the ejector push plate 6 by sliding, and the two ejector screws 5 are connected to the ejector push plate 6 by threading;

[0024] The controller is electrically connected to the distance measuring sensor 7 .

[0025] The technical scheme provided by the utility model is that the setting of the structure can make the motor 13 in the power mechanism 2 drive the ejector screw 5 to make a rotational motion, and the ejector screw 5 drives the ejector push plate 6 to make a reciprocating linear motion on the ejector guide rod 8. The radial force generated by the ejector push plate 6 is borne by the ejector guide rod 8, thereby reducing the radial force on the ejector screw 5 and avoiding the ejector screw 5 from breaking, thereby achieving the purpose of stably ejecting the product when the device is working, and the distance sensor 7 is used to detect the ejection distance. At the same time, when the distance sensor 7 detects the set distance, the information is transmitted to the controller, and the controller controls the motor 13 in the power mechanism 2 to turn off and stop ejection, thereby achieving the purpose of adjusting the ejection distance.

[0026] Furthermore, the two ejector guide rods 8 and the two ejector lead screws 5 are respectively distributed diagonally.

[0027] Specifically, the axis connecting lines of the two ejector guide rods 8 and the two ejector screws 5 intersect at the center of the center ejector rod 9 .

[0028] Furthermore, the power mechanism 2 includes a motor 13 fixedly mounted on one side of the center plate 1, the output end of the motor 13 movably passes through the center plate 1 and is fixedly connected to a second synchronous wheel 14, the motor 13 is electrically connected to the controller, a tensioning wheel 11 is provided on the other side of the center plate 1, one end of the two ejector screws 5 movably passes through the ejector push plate 6 and is fixedly connected to a first synchronous wheel 4, and a synchronous belt 3 is tensionedly connected between the second synchronous wheel 14, the tensioning wheel 11 and the first synchronous wheel 4.

[0029] Specifically, by starting the motor 13, the motor 13 drives the first synchronous wheel 4 to rotate, so that the first synchronous wheel 4 is linked to the synchronous belt 3 to rotate, and the second synchronous wheel 14 is linked to the synchronous belt 3 to rotate, and the ejector screw 5 is linked to rotate, and the tensioning wheel 11 is used to adjust the tension of the synchronous belt 3.

[0030] Furthermore, a slide groove 15 is provided on one side of the center plate 1 , a slider 16 is slidably connected inside the slide groove 15 , one side of the slider 16 is rotationally connected to the tensioning wheel 11 , and an electric telescopic rod 12 is fixedly installed on the inner bottom wall of the slide groove 15 .

[0031] Specifically, by starting the electric telescopic rod 12, the electric telescopic rod 12 pushes the slider 16 to slide inside the slide groove 15, and the tensioning wheel 11 is linked to move, so that the tension of the synchronous belt 3 can be adjusted.

[0032] Embodiment 2

[0033] Based on the first embodiment, in this embodiment: four auxiliary ejector pins 10 are distributed in a circle with the central ejector rod 9 as the center.

[0034] The technical solution provided by this embodiment is: the arrangement of this structure can make the ejector push plate 6 drive the auxiliary ejector 10 to make a reciprocating motion, and when the auxiliary ejector 10 ejects the product, the product is evenly stressed, thereby avoiding the phenomenon of uneven stress on the product and unevenness.

[0035] Working principle of the utility model: the setting of the structure can make the motor 13 in the power mechanism 2 drive the first synchronous wheel 4 to rotate, so that the first synchronous wheel 4 is linked with the synchronous belt 3 to rotate, and the second synchronous wheel 14 is linked with the synchronous belt 3 to rotate, and the ejector screw 5 is linked with the ejector screw 5 to rotate. When the motor 13 drives the ejector screw 5 to rotate, the ejector screw 5 drives the ejector push plate 6 to make a reciprocating linear motion on the ejector guide rod 8. The radial force generated by the ejector push plate 6 is borne by the ejector guide rod 8, reducing the radial force on the ejector screw 5 and avoiding the ejector screw 5 breaks, thereby achieving the purpose of stably ejecting the product when the device is working. When the auxiliary ejector 10 is driven by the ejector push plate 6 to make a reciprocating motion, the product is evenly stressed when the auxiliary ejector 10 ejects the product, avoiding the product from being unevenly stressed and uneven. The distance sensor 7 is used to detect the ejection distance. At the same time, when the distance sensor 7 detects the set distance, it transmits the information to the controller, and the controller controls the motor 13 in the power mechanism 2 to turn off and stop ejection, thereby achieving the purpose of adjustable ejection distance.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-screw electric ejector device for an injection molding machine, characterized in that: include: A controller, a center plate (1), and an ejector push plate (6), wherein a power mechanism (2) is arranged on one side of the center plate (1), a center ejector rod (9) is arranged in the middle of one side of the ejector push plate (6), four auxiliary ejectors (10) are arranged around the center ejector rod (9), and the four auxiliary ejectors (10) are arranged in a circular array, a distance measuring sensor (7) is arranged on the other side of the ejector push plate (6), two ejector guide rods (8) and two ejector lead screws (5) are arranged on one side of the ejector push plate (6), and the two ejector guide rods (8) are arranged diagonally, and the two ejector lead screws (5) are connected to the ejector push plate (6) by sliding, and the two ejector lead screws (5) are connected to the ejector push plate (6) by threading; The controller is electrically connected to the distance measuring sensor (7).

2. The double-screw electric ejector device for an injection molding machine according to claim 1, characterized in that: The four auxiliary ejector pins (10) are distributed in a circle with the central ejector rod (9) as the center.

3. The double-screw electric ejector device for an injection molding machine according to claim 1, characterized in that: The two ejector guide rods (8) and the two ejector lead screws (5) are respectively distributed diagonally.

4. The double-screw electric ejector device for an injection molding machine according to claim 1, characterized in that: The power mechanism (2) comprises a motor (13) fixedly mounted on one side of the central plate (1), an output end of the motor (13) movably passes through the central plate (1) and is fixedly connected to a second synchronous wheel (14), and the motor (13) is electrically connected to the controller.

5. The double-screw electric ejector device for an injection molding machine according to claim 4, characterized in that: A tensioning wheel (11) is provided on the other side of the center plate (1), and one end of the two ejector screws (5) movably passes through the ejector push plate (6) and is fixedly connected to a first synchronous wheel (4).

6. The double-screw electric ejector device for an injection molding machine according to claim 5, characterized in that: A synchronous belt (3) is tensionedly connected between the second synchronous wheel (14), the tension wheel (11) and the first synchronous wheel (4).

7. The double-screw electric ejector device for an injection molding machine according to claim 5, characterized in that: A slide groove (15) is provided on one side of the center plate (1), a slider (16) is slidably connected inside the slide groove (15), one side of the slider (16) is rotationally connected to the tension wheel (11), and an electric telescopic rod (12) is fixedly mounted on the inner bottom wall of the slide groove (15).

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