A plastic mold demolding device

Abstract

The utility model relates to die stripping device technical field, and disclose a kind of plastic mould die stripping device, the plastic mould die stripping device, including rack, static mould is fixedly installed in the rack, movable mould is slidably installed in the rack, and stripping assembly is provided on the rack.This plastic mould die stripping device, to better stripping, by setting stripping assembly, first, start the propulsion mechanism on rack, so that movable mould moves until completely adheres to static mould, then cooperate feed mechanism to complete the forming of plastic workpiece, then make movable mould away from static mould, start hydraulic cylinder, so that fixed frame moves downward, start asynchronous motor, so that threaded rod rotates, cooperate slide rail to make threaded block can move transversely, drive vertical rod synchronous movement, start asynchronous motor to make scraper can rotate, cooperate with the slot to avoid vertical rod and scraper and static mould movement interference, so that when workpiece remains in static mould or movable mould inside, all can be well assisted stripping.

Description

Technical Field

[0001] This utility model relates to the field of demolding device technology, specifically a demolding device for plastic molds. Background Technology

[0002] In the production process of plastic products, plastic molds play a crucial role, determining the shape, size, and precision of the plastic products. Demolding, as a key step in the plastic mold production process, directly affects product quality and production efficiency.

[0003] Currently, some demolding devices have a power mechanism inside the mold, such as a motor or cylinder, which drives the ejection component to eject the injection molded part.

[0004] However, existing plastic mold demolding devices still have shortcomings. In actual operation, they are inefficient and cannot effectively demold protrusions caused by workpiece overflow during molding. They also cannot effectively assist in demolding when workpieces remain inside the static or moving mold. The demolding success rate and efficiency need to be improved. Therefore, we propose a plastic mold demolding device. Utility Model Content

[0005] The purpose of this invention is to provide a plastic mold demolding device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A plastic mold demolding device includes a frame, a stationary mold fixedly installed inside the frame, a movable mold slidably installed inside the frame, the movable mold being driven to move by a pushing mechanism, a feeding mechanism being provided on the stationary mold, and a demolding assembly being provided on the frame. The demolding assembly includes:

[0008] A hydraulic cylinder, wherein a fixed end of the hydraulic cylinder is fixedly installed on the inner wall of the moving mold, a fixed frame is fixedly installed on the piston end of the hydraulic cylinder, and an asynchronous motor is fixedly installed at the bottom of the fixed frame;

[0009] A threaded rod is fixedly installed at the output end of the asynchronous motor. Both ends of the threaded rod are rotatably installed inside the fixed frame through bearing components. Threaded blocks are threadedly fitted on the threaded rod. A slide rail is fixedly installed at the bottom of the fixed frame. A sliding component inside the slide rail is fixedly installed on the top of the threaded block.

[0010] The vertical rod has a threaded block at the bottom fixedly connected to the top of the vertical rod. An asynchronous motor is fixedly installed at the top center of the vertical rod. A scraper is fixedly installed at the top center of the output shaft at the bottom of the asynchronous motor. One side of the scraper is a vertical surface, and the other side is an inclined surface. A through slot is opened at the top of the stationary mold to avoid motion interference between the vertical rod and the scraper and the stationary mold.

[0011] In a further embodiment, the propulsion mechanism is a hydraulic component.

[0012] In a further embodiment, the static mold and the moving mold are geometrically coaxial, which better shapes the workpiece body.

[0013] In a further embodiment, the slide rail is provided in two sets, which makes the movement of the threaded block more stable.

[0014] In a further embodiment, the moving mold is provided with an auxiliary component, which includes a fan. The fan is fixedly installed inside the bottom end of the moving mold, and the output end of the fan is fixedly connected to one end of a bend. A conical cover is fixedly installed at the other end of the bend.

[0015] In a further embodiment, the large end of the conical cover faces the recessed workpiece forming area of ​​the stationary and moving molds, and the conical cover is at the same horizontal height as the horizontal centerline of the stationary and moving molds, thereby accelerating the cooling of the workpiece body after forming.

[0016] In a further embodiment, the stationary mold has a through side groove to avoid motion interference.

[0017] Compared with the prior art, the present invention provides a plastic mold demolding device, which has the following beneficial effects:

[0018] 1. This plastic mold demolding device, in order to achieve better demolding, is equipped with demolding components. First, the pushing mechanism on the frame is activated, causing the moving mold to move until it is completely in contact with the stationary mold. Then, it works with the feeding mechanism to complete the molding of the plastic workpiece. Afterward, the moving mold is moved away from the stationary mold, the hydraulic cylinder is activated, causing the fixed frame to move downward. The asynchronous motor is activated, causing the threaded rod to rotate. With the help of the slide rail, the threaded block can move laterally, driving the vertical rod to move synchronously. The asynchronous motor is activated, allowing the scraper to rotate. With the help of the through groove, the vertical rod and scraper are prevented from interfering with the movement of the stationary mold. Thus, when the workpiece remains inside the stationary mold or the moving mold, it can be effectively demolded.

[0019] 2. In order to improve the demolding effect, the plastic mold demolding device is equipped with auxiliary components. When the moving mold moves away from the stationary mold, the fan is activated, so that the airflow is blown through the bend to the conical cover. The airflow blows from the conical cover to the workpiece body, which accelerates the cooling of the workpiece body and facilitates subsequent demolding. At the same time, it works with the side groove to avoid motion interference between the bend and the conical cover and the stationary mold. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0022] Figure 3 This is an exploded view of part of the structure of this utility model;

[0023] Figure 4 This utility model Figure 3 A magnified structural diagram of region A in the middle.

[0024] Explanation of icon numbers:

[0025] 1. Frame; 2. Stationary mold; 3. Moving mold; 4. Feeding mechanism;

[0026] 5. Demolding assembly; 51. Hydraulic cylinder; 52. Fixing frame; 53. Asynchronous motor; 54. Threaded rod; 55. Threaded block; 56. Slide rail; 57. Vertical rod; 58. Asynchronous motor; 59. Scraper; 510. Through groove;

[0027] 6. Auxiliary components; 61. Fan; 62. Bend; 63. Conical cover; 64. Side groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0030] Please see Figures 1-4 This utility model provides a technical solution:

[0031] A plastic mold demolding device includes a frame 1, a stationary mold 2 fixedly installed inside the frame 1, and a moving mold 3 slidably installed inside the frame 1. The stationary mold 2 and the moving mold 3 are geometrically coaxial for better forming of the workpiece body. The moving mold 3 is driven to move by a propulsion mechanism, which is a hydraulic component (existing equipment, so details will not be provided). A feeding mechanism 4 is provided on the stationary mold 2 (existing equipment, so details will not be provided). The frame 1 also includes heating equipment and collecting equipment (existing equipment, so details will not be provided).

[0032] The propulsion mechanism (hydraulic component) on the start frame 1 drives the moving mold 3 to move towards the stationary mold 2 until the moving mold 3 and the stationary mold 2 are completely fitted to form a complete mold cavity. Molten plastic is injected into the mold cavity through the feeding mechanism 4 to complete the workpiece forming. The propulsion mechanism drives the moving mold 3 away from the stationary mold 2 to achieve the initial mold opening.

[0033] In one embodiment of this utility model, a demolding assembly 5 is provided on the frame 1. The demolding assembly 5 includes a hydraulic cylinder 51. The fixed end of the hydraulic cylinder 51 is fixedly installed on the inner wall of the moving mold 3. A fixed frame 52 is fixedly installed on the piston end of the hydraulic cylinder 51. An asynchronous motor 53 is fixedly installed at the bottom of the fixed frame 52. A threaded rod 54 is fixedly installed at the output end of the asynchronous motor 53. The two ends of the threaded rod 54 are rotatably installed inside the fixed frame 52 through bearing components. Threaded blocks 55 are threadedly engaged on the threaded rod 54. A slide rail is fixedly installed at the bottom of the fixed frame 52. 56. The sliding component inside the slide rail 56 is fixedly installed on the top of the threaded block 55. In addition, there are two sets of slide rails 56, which makes the movement of the threaded block 55 more stable. The bottom of the threaded block 55 is fixedly connected to the top of the vertical rod 57. The bottom of the vertical rod 57 is fixedly installed at the top center of the asynchronous motor 58. The bottom output shaft of the asynchronous motor 58 is fixedly installed at the top center of the scraper 59. One side of the scraper 59 is a vertical surface and the other side is a sloped surface. The top of the stationary mold 2 has a through slot 510 to prevent the vertical rod 57 and the scraper 59 from interfering with the movement of the stationary mold 2.

[0034] In this embodiment, the hydraulic cylinder 51 is activated, and its piston end pushes the fixed frame 52 to move downward in the vertical direction, bringing the scraper 59 closer to the workpiece. The asynchronous motor 53 is activated, driving the threaded rod 54 to rotate. Since the threaded block 55 is threadedly engaged with the threaded rod 54 and its top is restricted by the slide rail 56, the threaded block 55 moves laterally along the axial direction of the threaded rod 54. The threaded block 55 drives the vertical rod 57 to move laterally synchronously, adjusting the horizontal position of the scraper 59 so that the scraper 59 contacts the workpiece. When the workpiece remains in the stationary mold 2, the vertical surface of the scraper 59 is in contact with the surface of the stationary mold 2 and moves downward, scraping up the protruding part overflowing from the middle of the workpiece. When the workpiece remains in the moving mold 3, the asynchronous motor 58 is activated, driving the scraper 59 to rotate 180 degrees around its output shaft, so that the vertical surface of the scraper 59 is in contact with the surface of the moving mold 3 and moves downward, completing the demolding. The through groove 510 ensures that the vertical rod 57 and the scraper 59 will not interfere with the stationary mold 2 during the movement, thereby better assisting in demolding.

[0035] In one embodiment of this utility model, an auxiliary component 6 is provided on the moving mold 3. The auxiliary component 6 includes a fan 61. The fan 61 is fixedly installed inside the bottom end of the moving mold 3. The output end of the fan 61 is fixedly connected to one end of the bent pipe 62. A conical cover 63 is fixedly installed on the other end of the bent pipe 62. In addition, the large end of the conical cover 63 faces the recessed workpiece forming area of ​​the stationary mold 2 and the moving mold 3, and the conical cover 63 is at the same horizontal height as the horizontal centerline of the stationary mold 2 and the moving mold 3, which accelerates the cooling of the workpiece body after forming. In addition, a through side groove 64 is opened on the side of the stationary mold 2 to avoid motion interference.

[0036] In this embodiment, after the moving mold 3 moves away from the stationary mold 2, the fan 61 starts and generates a high-speed airflow. The airflow is delivered to the conical cover 63 through the bend 62. The conical cover 63 guides the airflow to the workpiece forming area between the stationary mold 2 and the moving mold 3. The high-speed airflow acts on the surface of the workpiece, accelerating the heat dissipation and cooling of the workpiece, allowing it to solidify quickly and easily separate from the mold. The side groove 64 ensures that the bend 62 and the conical cover 63 will not collide or interfere with the stationary mold 2 during the movement of the moving mold 3, thereby improving the demolding success rate and production efficiency.

[0037] All electrical components mentioned in this application are electrically connected to the PLC controller and 220V AC mains power. The PLC controller is a conventional and known device that can control the feeding mechanism 4, hydraulic cylinder 51, asynchronous motor 53, asynchronous motor 58, and fan 61. All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as riveting and welding, which are mature in the prior art. The standard parts are all conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art. It should be noted that the above electrical components are all prior art products. Those skilled in the art should select, install, and complete the circuit debugging work according to the needs of use to ensure that all electrical components can work normally. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here. The supporting structures of the hydraulic drive structure mentioned in this application, such as hydraulic tanks and hydraulic pumps, are existing equipment and will not be described in detail here.

[0038] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A plastic mold demolding device, comprising a frame (1), wherein a stationary mold (2) is fixedly installed inside the frame (1), and a moving mold (3) is slidably installed inside the frame (1), wherein the moving mold (3) is driven to move by a propulsion mechanism, and a feeding mechanism (4) is provided on the stationary mold (2), characterized in that: A demolding assembly (5) is provided on the frame (1), the demolding assembly (5) comprising: Hydraulic cylinder (51), the fixed end of hydraulic cylinder (51) is fixedly installed on the inner wall of the moving mold (3), the piston end of hydraulic cylinder (51) is fixedly installed with a fixed frame (52), and the bottom of the fixed frame (52) is fixedly installed with an asynchronous motor (53). A threaded rod (54) is fixedly installed at the output end of the asynchronous motor (53). The two ends of the threaded rod (54) are rotatably installed inside the fixed frame (52) through bearing components. A threaded block (55) is threadedly fitted on the threaded rod (54). A slide rail (56) is fixedly installed at the bottom of the fixed frame (52). The sliding component inside the slide rail (56) is fixedly installed on the top of the threaded block (55). The vertical rod (57) is fixedly connected to the top of the threaded block (55) at the bottom. The bottom of the vertical rod (57) is fixedly installed with the top center of the asynchronous motor (58). The bottom output shaft of the asynchronous motor (58) is fixedly installed with the top center of the scraper (59). One side of the scraper (59) is a vertical surface and the other side is an inclined surface. The top of the stationary mold (2) is provided with a through slot (510).

2. The plastic mold demolding device according to claim 1, characterized in that: The propulsion mechanism is a hydraulic component.

3. The plastic mold demolding device according to claim 1, characterized in that: The static mold (2) and the moving mold (3) are coaxial in geometry.

4. The plastic mold demolding device according to claim 1, characterized in that: The slide rail (56) is provided in two sets.

5. A plastic mold demolding device according to claim 1, characterized in that: The moving mold (3) is provided with an auxiliary component (6), which includes a fan (61). The fan (61) is fixedly installed inside the bottom of the moving mold (3). The output end of the fan (61) is fixedly connected to one end of a bend (62), and a conical cover (63) is fixedly installed at the other end of the bend (62).

6. A plastic mold demolding device according to claim 5, characterized in that: The large end of the conical cover (63) faces the recessed workpiece forming area of ​​the stationary mold (2) and the moving mold (3), and the conical cover (63) is at the same horizontal height as the horizontal centerline of the stationary mold (2) and the moving mold (3).

7. A plastic mold demolding device according to claim 6, characterized in that: The static mold (2) has a through side groove (64) on its side.

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