A mold device for rapid demolding

Abstract

The utility model relates to the technical field of plastic production discloses a mould device of quick demoulding, including upper die plate and lower die plate, the upper die plate is fixedly arranged with the positioning guide pillar, the lower die plate is arranged on the positioning guide pillar and slides, the one side of lower die plate away from upper die plate is provided with the ejection assembly, the one side of ejection assembly away from lower die plate is fixedly provided with the support base plate, the one side of support base plate away from ejection assembly is fixedly connected with main electric cylinder, the upper die plate and lower die plate are provided with response component, in the utility model, through setting response component, the control center can identify the state of the upper die plate and lower die plate and know whether the current is injection molding state or injection molding end state, if it is injection molding end state, the control center controls the ejection assembly and main electric cylinder synchronous start to start, so that the upper die plate leaves the lower die plate, and the ejection assembly slowly ejects product model.

Description

Technical Field

[0001] This utility model relates to the field of plastic production technology, and in particular to a mold device for rapid demolding. Background Technology

[0002] The demolding devices for injection molds include mechanical demolding devices and pneumatic-assisted demolding devices. Mechanical demolding devices achieve efficient ejection through a power mechanism; pneumatic-assisted demolding devices utilize compressed air to optimize the demolding process.

[0003] This practical application focuses on mechanical demolding devices, using electro-hydraulic demolding as an example. It utilizes a hydraulic cylinder to provide a stable thrust, smoothly ejecting the product from the mold. In typical applications, the hydraulic cylinder stroke needs to be precisely set. For instance, in gear injection molds, adjusting the hydraulic cylinder stroke ensures even distribution of ejection force, preventing localized deformation. This system must be linked to the mold's movement for control, preventing damage to the product or impact on mold life due to excessive stroke.

[0004] In existing technology, after injection molding is completed inside the mold, the control center activates external cooling components for heat exchange and cooling. After cooling, the upper and lower molds separate, and the product model is ejected by ejector pins and other components, causing the product model to fall into the receiving frame below. However, the time spent separating the upper and lower molds is wasted, thus affecting the efficiency of product demolding.

[0005] Therefore, it is necessary to solve the above problems by using a mold device that allows for rapid demolding. Utility Model Content

[0006] The purpose of this invention is to provide a mold device for rapid demolding, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a mold device for rapid demolding, comprising an upper mold plate and a lower mold plate, wherein a positioning guide post is fixedly provided on the upper mold plate, the lower mold plate is slidably provided on the positioning guide post, an ejection assembly is provided on the side of the lower mold plate away from the upper mold plate, a support base plate is fixedly provided on the side of the ejection assembly away from the lower mold plate, a main electric cylinder is fixedly connected to the side of the support base plate away from the ejection assembly, and sensing components are provided on the upper mold plate and the lower mold plate; It also includes a control center, which is connected to the ejector assembly, the main electric cylinder and the sensing assembly via electrical signals.

[0008] Preferably, the sensing component includes a fixed angle iron fixedly installed on the upper template and a movable angle iron fixedly installed on the lower template. A pressure sensor is provided on the fixed angle iron, and the sensing end of the pressure sensor is positioned facing the movable angle iron.

[0009] Preferably, the ejector assembly includes an ejector body and an ejector fixing plate, wherein the ejector body is fixedly mounted on the ejector fixing plate and passes through the lower template.

[0010] Preferably, the two ends of the ejector pin fixing plate are slidably provided with fixing square irons, the two ends of the fixing square irons are respectively fixed to the lower template and the supporting base plate, and an ejector pin guide rod is also fixedly provided between the lower template and the supporting base plate, and the ejector pin fixing plate is slidably provided on the ejector pin guide rod.

[0011] Preferably, the lower template is provided with miniature electric cylinders at both ends, and the ejector pin fixing plate is provided with traction plates at both ends, and the traction plates are fixedly connected to the output end of the miniature electric cylinders.

[0012] Preferably, the upper mold plate has a feed inlet on the side away from the lower mold plate, the upper mold plate has a front mold cavity, and the lower mold plate has a rear mold cavity.

[0013] Preferably, the end of the positioning guide post away from the upper template is fixedly mounted on the main electric cylinder, and the ejection assembly and the support base plate are both slidably mounted on the positioning guide post.

[0014] The technical effects and advantages of this utility model are as follows: 1. In this utility model, by setting a sensing component, the control center can identify the bonding state of the upper and lower mold plates, thereby determining whether the current state is injection molding or injection molding completion. If the injection molding is completion, the control center controls the ejection component and the main electric cylinder to start synchronously, so that while the upper mold plate leaves the lower mold plate, the ejection component slowly ejects the product model, thereby achieving the purpose of ejecting the product model during the time period when the upper and lower molds are separated, and improving the efficiency of product demolding.

[0015] 2. In this utility model, by setting a pressure sensor and a moving angle iron, the control center can identify the fitting state of the upper and lower templates and determine whether it is necessary to control the ejection component to eject the product synchronously. This allows the time for the upper and lower templates to separate to be utilized, saving demolding time and improving demolding efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle; Figure 3 This is a schematic diagram of the ejector assembly structure of this utility model; Figure 4 This is a schematic diagram of the sensing component structure of this utility model.

[0017] In the diagram: 1. Upper mold plate; 2. Lower mold plate; 3. Ejector assembly; 301. Ejector pin body; 302. Ejector pin fixing plate; 303. Ejector pin guide rod; 304. Fixing square iron; 305. Miniature electric cylinder; 306. Pulling plate; 4. Main electric cylinder; 5. Feed port; 6. Sensing assembly; 601. Fixing angle iron; 602. Moving angle iron; 603. Pressure sensor; 7. Rear mold cavity; 8. Front mold cavity; 9. Positioning guide post; 10. Support base plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] To address the issue that the time between the upper and lower molds is wasted after the internal injection molding is completed, and the product model is then ejected by components such as the ejector pin body 301, thus affecting the efficiency of product demolding, the following embodiments are proposed.

[0020] This utility model provides, for example Figures 1 to 4 The illustrated quick-release mold device includes an upper mold plate 1 and a lower mold plate 2. A positioning guide post 9 is fixedly mounted on the upper mold plate 1, and the lower mold plate 2 is slidably mounted on the positioning guide post 9. An ejection assembly 3 is located on the side of the lower mold plate 2 away from the upper mold plate 1. A support base plate 10 is fixedly mounted on the side of the ejection assembly 3 away from the lower mold plate 2. A main electric cylinder 4 is fixedly connected to the side of the support base plate 10 away from the ejection assembly 3. Sensing components 6 are mounted on both the upper mold plate 1 and the lower mold plate 2. A feed inlet 5 is located on the side of the upper mold plate 1 away from the lower mold plate 2. The feed port 5 is connected to the front mold cavity 8 to ensure that molten plastic can be input into the injection cavity from the feed port 5. The upper mold plate 1 is provided with the front mold cavity 8, and the lower mold plate 2 is provided with the rear mold cavity 7. When the upper mold plate 1 and the lower mold plate 2 are attached, the front mold cavity 8 and the rear mold cavity 7 form the injection cavity. Then, the external hot melt device is controlled to inject molten plastic into the injection cavity through the feed port 5 for molding. The end of the positioning guide post 9 away from the upper mold plate 1 is fixedly set on the main electric cylinder 4. The ejection assembly 3 and the support base plate 10 are slidably set on the positioning guide post 9.

[0021] This invention also includes a control center, which is connected to the ejector assembly 3, the main electric cylinder 4, and the sensing assembly 6 via electrical signals. The control center is connected to the miniature electric cylinder 305 in the ejector assembly 3 via electrical signals and controls the extension and retraction of the output end of the miniature electric cylinder 305.

[0022] By setting up the sensing component 6, the control center can identify the bonding state of the upper mold plate 1 and the lower mold plate 2, thereby determining whether the current state is injection molding or injection molding completion. If the injection molding completion state is achieved, the control center controls the ejection component 3 and the main electric cylinder 4 to start synchronously, so that while the upper mold plate 1 leaves the lower mold plate 2, the ejection component 3 slowly ejects the product model, thereby achieving the purpose of ejecting the product model during the time period when the upper and lower molds are separated, improving the efficiency of product demolding.

[0023] like Figures 3-4 As shown, the sensing component 6 includes a fixed angle iron 601 fixedly mounted on the upper mold plate 1 and a movable angle iron 602 fixedly mounted on the lower mold plate 2. A pressure sensor 603 is mounted on the fixed angle iron 601, with the sensing end of the pressure sensor 603 facing the movable angle iron 602. The control center is connected to the pressure sensor 603 via an electrical signal. The pressure sensor 603 can transmit a signal to the control center in real time when it is under pressure. When the pressure sensor 603 emits a pressure signal, it indicates that the upper mold plate 1 and the lower mold plate 2 are in a close fit, and injection molding is underway in the injection cavity formed by the front mold cavity 8 and the rear mold cavity 7. When the pressure sensor 603 emits no pressure signal, it indicates that the upper mold plate 1 and the lower mold plate 2 are in a separate fit, indicating that the injection molding is complete.

[0024] In use, the main electric cylinder 4 drives the lower mold plate 2 to approach and fit against the upper mold plate 1 through the support base plate 10 and the ejection assembly 3. In the fitted state, the movable angle iron 602 on the lower mold plate 2 abuts against the sensing end of the pressure sensor 603 on the fixed angle iron 601. The pressure sensor 603 is subjected to pressure and sends a pressure signal to the control center. The control center receives the pressure signal and knows that the front mold cavity 8 and the rear mold cavity 7 have been fitted to form an injection cavity. In conjunction with the activation of the external hot melt device, molten plastic is delivered into the injection cavity through the feed port 5 for injection molding.

[0025] After injection molding is completed, the control center controls the main electric cylinder 4 to drive the lower mold plate 2 to leave the upper mold plate 1. In the separated state, the moving angle iron 602 on the lower mold plate 2 cancels the pressure on the pressure sensor 603. The pressure sensor 603 does not send a pressure signal. The control center knows that the front mold cavity 8 and the rear mold cavity 7 have separated from each other and controls the ejection assembly 3 to eject the product synchronously.

[0026] By setting pressure sensor 603 and moving angle iron 602, the control center can identify the bonding state of upper template 1 and lower template 2, and determine whether it is necessary to control ejection component 3 to eject the product synchronously. This allows the separation time of upper template 1 and lower template 2 to be utilized, saving demolding time and improving demolding efficiency.

[0027] like Figure 4As shown, the ejector assembly 3 includes an ejector pin body 301 and an ejector pin fixing plate 302. The ejector pin body 301 is fixedly mounted on the ejector pin fixing plate 302 and passes through the lower mold plate 2. The ejector end of the ejector pin body 301 passes through the rear mold cavity 7 and can extend out of the rear mold cavity 7 to eject the molded product in the rear mold cavity 7. Fixed square irons 304 are slidably arranged at both ends of the ejector pin fixing plate 302. The two ends of the fixed square irons 304 are respectively fixed to the lower mold plate 2 and the support base plate 10. An ejector pin guide rod 303 is also fixedly arranged between the lower mold plate 2 and the support base plate 10. The ejector pin fixing plate 302 is slidably arranged on the ejector pin guide rod 303. Miniature electric cylinders 305 are arranged at both ends of the lower mold plate 2, and tension plates 306 are arranged at both ends of the ejector pin fixing plate 302. The tension plates 306 are fixedly connected to the output end of the miniature electric cylinders 305. A receiving frame is placed directly below the ejector assembly 3 to receive the falling product model.

[0028] It should be noted that the sum of the output of the miniature electric cylinder 305 driving the ejector body 301 to push the product down plus the depth of the product must be less than the output of the main electric cylinder 4. Furthermore, the extension and retraction speed of the output shaft of the miniature electric cylinder 305 must be consistent with or slightly lower than the extension and retraction speed of the output end of the main electric cylinder 4. This application prefers the state where the extension and retraction speeds are consistent, thereby ensuring that the molded product can fall smoothly between the upper mold plate 1 and the lower mold plate 2.

[0029] During use, the output ends of the micro electric cylinders 305 at both ends of the control center retract synchronously. The micro electric cylinders 305 drive the ejector pin fixing plate 302 to move along the ejector pin guide rod 303 towards the lower template 2 via the pull plate 306. The ejector pin fixing plate 302 drives the ejector pin body 301 to eject the product in the rear mold cavity 7. After the product is ejected, it falls into the receiving frame located below.

[0030] The working principle of this utility model is as follows: First, the upper and lower molds are combined, and the output end of the main electric cylinder 4 is extended by the control center. The main electric cylinder 4 drives the lower template 2 to stick to the upper template 1 through the support base plate 10 and the ejection assembly 3.

[0031] Secondly, during injection molding, with the lower mold plate 2 and the upper mold plate 1 in contact, the movable angle iron 602 on the lower mold plate 2 abuts against the sensing end of the pressure sensor 603 on the fixed angle iron 601. The pressure sensor 603 receives pressure and sends a pressure signal to the control center. The control center receives the pressure signal and knows that the front mold cavity 8 and the rear mold cavity 7 are now tightly fitted and form an injection cavity. It then activates the external hot melt device to deliver molten plastic into the injection cavity through the feed port 5 for injection molding.

[0032] Then, the separation state of the upper and lower molds is detected. After the injection molding is completed, the control center controls the main electric cylinder 4 to drive the lower mold plate 2 to leave the upper mold plate 1. In the separation state, the moving angle iron 602 on the lower mold plate 2 cancels the pressure on the pressure sensor 603. The pressure sensor 603 does not send a pressure signal. The control center knows that the front mold cavity 8 and the rear mold cavity 7 have separated from each other at this time.

[0033] Then, the molded product is pushed down. At the same time that the pressure sensor 603 does not send a pressure signal, the output ends of the micro electric cylinders 305 at both ends of the lower mold plate 2 are synchronously retracted under the control center, and the retraction speed is consistent with that of the main electric cylinder 4. The micro electric cylinders 305 drive the ejector pin fixing plate 302 to move along the ejector pin guide rod 303 towards the lower mold plate 2 through the pull plate 306. The ejector pin fixing plate 302 drives the ejector pin body 301 to eject the product in the rear mold cavity 7. After the product is ejected, it falls into the receiving frame located below.

[0034] Finally, the system returns to its original position. The output end of the main electric cylinder 4 is extended by the control center, causing the lower mold plate 2 to press against the upper mold plate 1 again. At the same time, the output end of the micro electric cylinder 305 drives the ejector pin fixing plate 302 and the ejector pin body 301 back to their original positions, waiting for the next injection molding to finish.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold device for rapid demolding, characterized in that: Includes an upper template (1) and a lower template (2). The upper template (1) is fixedly provided with a positioning guide post (9). The lower template (2) is slidably provided on the positioning guide post (9). The side of the lower template (2) away from the upper template (1) is provided with an ejection component (3). The side of the ejection component (3) away from the lower template (2) is fixedly provided with a support base plate (10). The side of the support base plate (10) away from the ejection component (3) is fixedly connected with a main electric cylinder (4). The upper template (1) and the lower template (2) are provided with sensing components (6). It also includes a control center, which is connected to the ejector assembly (3), the main electric cylinder (4) and the sensing assembly (6) via electrical signals.

2. The mold device for rapid demolding according to claim 1, characterized in that: The sensing component (6) includes a fixed angle iron (601) fixedly installed on the upper template (1) and a movable angle iron (602) fixedly installed on the lower template (2). A pressure sensor (603) is provided on the fixed angle iron (601), and the sensing end of the pressure sensor (603) is positioned facing the movable angle iron (602).

3. The mold device for rapid demolding according to claim 1, characterized in that: The ejector assembly (3) includes an ejector body (301) and an ejector fixing plate (302). The ejector body (301) is fixedly installed on the ejector fixing plate (302) and the ejector body (301) passes through the lower template (2).

4. The mold device for rapid demolding according to claim 3, characterized in that: The two ends of the ejector pin fixing plate (302) are slidably provided with fixing square irons (304). The two ends of the fixing square irons (304) are respectively fixed on the lower template (2) and the support base plate (10). An ejector pin guide rod (303) is also fixedly provided between the lower template (2) and the support base plate (10). The ejector pin fixing plate (302) is slidably provided on the ejector pin guide rod (303).

5. The mold device for rapid demolding according to claim 4, characterized in that: The lower template (2) is provided with miniature electric cylinders (305) at both ends, and the pin fixing plate (302) is provided with traction plates (306) at both ends. The traction plates (306) are fixedly connected to the output end of the miniature electric cylinders (305).

6. The mold device for rapid demolding according to claim 1, characterized in that: The upper template (1) has a feed inlet (5) on the side away from the lower template (2), the upper template (1) has a front mold cavity (8), and the lower template (2) has a rear mold cavity (7).

7. The mold device for rapid demolding according to claim 1, characterized in that: The end of the positioning guide post (9) away from the upper template (1) is fixedly mounted on the main electric cylinder (4), and the ejection assembly (3) and the support base plate (10) are both slidably mounted on the positioning guide post (9).

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