Vertical rotary core-pulling rapid demolding structure and demolding method

Abstract

The invention belongs to the technical field of molds, and provides a vertical rotary core-pulling rapid demolding structure and a demolding method.The demolding structure comprises a first mold set, a second mold set, a first mold core piece, a second mold core piece, a core assembly, a core-pulling driving mechanism, a mold core driving mechanism and a mold set driving mechanism. The structure is reasonable in design, for the structure of a bent pipe product, a split type core assembly structure is adopted, the core assembly is matched with or separated from a product cavity through a rotating driving structure, the problem that in a traditional demolding structure, an ejector pin product needs to eject the product for demolding, and consequently ejector pin marks are generated is solved, and the demolding efficiency is improved. And after the core assembly is separated from the molded product, the molded product completely falls off under the action of self weight to realize core-pulling demolding, and the working efficiency of the whole structure is high.

Description

Technical Field

[0001] This invention belongs to the field of mold technology, specifically relating to a vertical rotating core-pulling quick demolding structure and demolding method. Background Technology

[0002] Currently, the molding of bent pipe plastic parts is a major challenge in plastic injection molding. Plastic molds are used to produce bent pipe products. The main structure of the mold includes an upper cavity and a lower cavity. There is a core between the upper cavity and the lower cavity. The core consists of an elbow core and a straight core. When demolding the bent pipe, the elbow core and the straight core must first be removed.

[0003] However, in the current method of removing the cores (elbow cores and straight cores, hereinafter referred to as cores), a hydraulic cylinder chain drives a gear to rotate a slider, and an ejector pin pushes the product out of the mold. The ejector pin structure leaves ejector pin marks on the product. At the same time, the slider is unstable when rotating, and the product is ejected after the slider rotates. The above process takes a long time, which seriously affects the production efficiency and the appearance of the product. Summary of the Invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this invention is to provide a vertical rotary core-pulling quick demolding structure and demolding method.

[0005] The technical solution adopted by this invention to solve its technical problem is: A vertical rotary core-pulling quick demolding structure includes: a first module, a second module, a first mold core component, a second mold core component, a core assembly, a core-pulling drive mechanism, a mold core drive mechanism, and a module drive mechanism; The drive end of the module drive mechanism is connected to the first module and can drive the first module to move closer to or further away from the second module; The first mold core and the second mold core are slidably engaged with the second module. The driving end of the mold core driving mechanism is connected to the first mold core and the second mold core respectively, and can drive the first mold core and the second mold core to move closer or further apart. The first mold core has a first cavity, and the second mold core has a second cavity. The first mold core and the second mold core are close to each other and can form a product cavity with the first cavity and the second cavity. The core assembly includes a first core component and a second core component. The core-pulling drive mechanism includes a linear drive core-pulling drive mechanism and a rotary drive core-pulling mechanism. The drive end of the linear drive core-pulling drive mechanism is connected to the first core component and can drive the first core component to engage with or move away from the product cavity. The drive end of the rotary drive core-pulling mechanism is adjacent to the second core component and can drive the second core component to rotate relative to and engage with or move away from the product cavity.

[0006] Preferably, the first core component is a straight core component structure, and the second core component is an bent core component structure.

[0007] Preferably, the linear drive core-pulling mechanism includes a linear drive cylinder, and the drive end of the linear drive cylinder is connected to the first core component; The rotary drive core-pulling mechanism includes a rotary drive cylinder, a rotary transmission component, and a rotating component. The drive end of the rotary drive cylinder is connected to the rotary transmission component, the rotary transmission component cooperates with the rotating component, and the rotating component rotates with the second module. When the rotary drive cylinder drives the rotary transmission component to reciprocate linearly relative to the second module, it enables the rotating component to rotate relative to the second module. The rotating component is connected to the second core component.

[0008] Preferably, the rotary transmission component is a gear, the rotary component is a fan-shaped gear, the gear meshes with the gear, and the rotary component has a connecting boss in the middle that connects to the second core component.

[0009] Preferably, the second module is provided with a rotary drive mounting assembly, which includes two rotary drive mounting seats. The two rotary drive mounting seats are connected to form a linear motion channel for the rotary transmission component to move linearly and a rotary motion cavity for the rotary component to move rotatably.

[0010] Preferably, the core-pulling drive mechanism further includes a core-pulling drive mounting assembly, which includes a core-pulling drive mounting plate, a core-pulling drive mounting column, and a core-pulling drive guide seat. The core-pulling drive mounting plate is connected to the second module through the core-pulling drive mounting column and the core-pulling drive guide seat. The linear drive cylinder and the rotary drive cylinder are mounted on the core-pulling drive mounting plate. The core-pulling drive guide seat is provided with a guide groove. A linear drive guide is provided between the drive end of the linear drive cylinder and the first core component. The linear drive guide slides in cooperation with the guide groove.

[0011] Preferably, the mold core driving mechanism includes two mold core driving cylinders, which are respectively fixed to both ends of the second module. The driving end of one mold core driving cylinder is connected to the first mold core component, and the driving end of the other mold core driving cylinder is connected to the second mold core component. The second module is provided with a guide rail, and the bottom of the first mold core and the second mold core are provided with sliding parts that slide in cooperation with the guide rail.

[0012] Preferably, the first module is provided with an injection molding assembly, and the injection end of the injection molding assembly is configured to communicate with the product cavity.

[0013] This invention also includes a demolding method for a vertical rotary core-pulling quick demolding structure, which is accomplished using the aforementioned vertical rotary core-pulling quick demolding structure. The steps of the demolding method are as follows: S1. The first module and the second module are moved away from each other by the module driving mechanism; S2. The first mold core and the second mold core are moved away from each other by the mold core driving mechanism; S3. The first core component is separated from the molded product by a linear drive core-pulling mechanism, and the second core component is separated from the molded product by a rotary drive core-pulling mechanism. S4. Remove the molded product.

[0014] Compared with the prior art, the beneficial effects of the present invention include: The vertical rotary core-pulling quick demolding structure of this application has a reasonable structural design. For the structure of bent tube products, a split core component structure is adopted, and a rotating drive structure is used to make the core component cooperate with or move away from the product cavity. This overcomes the problem of ejector pins being needed to push the product for demolding in traditional demolding structures, which produces ejector pin marks. After the core component separates from the molded product, the molded product completely falls off under its own weight, achieving core-pulling demolding. The entire structure has high working efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the structure of the present invention with the first module hidden.

[0018] Figure 3 This is a schematic diagram of the present invention with the first module, the first core component, and the second core component concealed.

[0019] Figure 4 This is a schematic diagram of the structure of the present invention with the first module, the first mold core, the second mold core, and the molded product hidden.

[0020] Figure 5 This is a schematic diagram of the rotating component of the present invention.

[0021] Figure 6 This is a schematic diagram of the structure of the first mold core component of the present invention.

[0022] Figure 7 This is a schematic diagram of the structure of the second mold core component of the present invention.

[0023] in: 1-First Module; 2-Second module, 201-Rotary drive mounting base, 202-Linear motion channel, 203-Rotary motion cavity, 204-Guide rail component; 3-First mold core, 301-First cavity; 4-Second mold core, 401-Second cavity; 5-Core assembly, 501-First core component, 502-Second core component; 6-Core pulling drive mechanism, 601-Linear drive cylinder, 602-Rotary drive cylinder, 603-Rotary transmission component, 604-Rotary component, 6041-Connecting boss, 605-Core pulling drive mounting plate, 606-Core pulling drive mounting column, 607-Core pulling drive guide seat, 6071-Guide groove, 608-Linear drive guide component; 7-Mold core drive mechanism, 701-Mold core drive cylinder, 702-Sliding component; 8- Molded product; 9-Injection molding component. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of the present invention; the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0026] Example: like Figure 1-7As shown, this embodiment provides a vertical rotary core-pulling quick demolding structure, including: a first module 1, a second module 2, a first mold core component 3, a second mold core component 4, a core assembly 5, a core-pulling drive mechanism 6, a mold core drive mechanism 7, and a module drive mechanism; The drive end of the module drive mechanism (not shown in the attached figure) is connected to the first module 1 and can drive the first module 1 to move closer to or further away from the second module 2; The first mold core 3 and the second mold core 4 are slidably engaged with the second module 2. The driving end of the mold core driving mechanism 7 is connected to the first mold core 3 and the second mold core 4 respectively, and can drive the first mold core 3 and the second mold core 4 to move closer or further apart. The first mold core 3 has a first cavity 301, and the second mold core 4 has a second cavity 401. The first mold core 3 and the second mold core 4 are close to each other and can form a product cavity with the first cavity 301 and the second cavity 401. The core assembly 5 includes a first core component 501 and a second core component 502. The core pulling drive mechanism 6 includes a linear drive core pulling drive mechanism 6 and a rotary drive core pulling mechanism. The drive end of the linear drive core pulling drive mechanism 6 is connected to the first core component 501 and can drive the first core component 501 to engage with or move away from the product cavity. The drive end of the rotary drive core pulling mechanism is adjacent to the second core component 502 and can drive the second core component 502 to rotate relative to it and engage with or move away from the product cavity.

[0027] The vertical rotary core-pulling quick demolding structure of this embodiment is used for demolding after injection molding of bent tube products. According to the above structural description, when the first module 1 and the second module 2 are close, the first core component 3 and the second core component 4 are close, and the first core component 501 and the second core component 502 are in the product cavity, the bent tube product is injected into the product cavity. After injection molding is completed, the first module 1 and the second module 2 are moved away from each other, then the first core component 3 and the second core component 4 are moved away from each other, and finally the first core component 501 and the second core component 502 are separated from the molded product 8, and the molded product 8, i.e., the bent tube, is removed.

[0028] This vertical rotary core-pulling quick demolding structure has a reasonable structural design. For the structure of bent tube products, it adopts a split core component 5 structure, and a rotating drive structure enables the core component 5 to cooperate with or move away from the product cavity. This overcomes the problem of ejector pin marks caused by the need for ejector pins to push the product out of the mold in traditional demolding structures. At the same time, after the core component 5 is separated from the molded product 8, the operator can remove the molded product 8 to achieve core-pulling demolding. The entire structure has high working efficiency.

[0029] In this embodiment, the first module 1 and the second module 2 are vertically arranged, that is, they are positioned to the left and right of each other. The first mold core 3 and the second mold core 4 are also vertically arranged. In this way, the molded product 8 is an upright structure after molding. Therefore, under its own weight, it can be completely detached to achieve core pulling and demolding, thereby improving work efficiency.

[0030] Regarding the structure of the molded product 8, in this embodiment, the first core component 501 is a straight core component structure, and the second core component 502 is an elbow core component structure. The first core component 501 and the second core component 502 are spliced ​​together to form a core structure that is adapted to the inner wall structure of the product's bent tube. It is located inside the product cavity to facilitate the injection molding of the product's bent tube.

[0031] The specific structure of the core-pulling drive mechanism 6 in this embodiment is as follows: The linear drive core-pulling mechanism 6 includes a linear drive cylinder 601, the drive end of which is connected to the first core component 501. The rotary drive core-pulling mechanism includes a rotary drive cylinder 602, a rotary transmission component 603, and a rotating component 604. The drive end of the rotary drive cylinder 602 is connected to the rotary transmission component 603. The rotary transmission component 603 cooperates with the rotating component 604. The rotating component 604 is rotatably engaged with the second module 2. When the rotary drive cylinder 602 drives the rotary transmission component 603 to reciprocate linearly relative to the second module 2, it enables the rotating component 604 to rotate relative to the second module 2. The rotating component 604 is connected to the second core component 502.

[0032] Specifically, the rotary transmission component 603 is a toothed component, and the rotary component 604 is a fan-shaped gear component. The gear component meshes with the toothed component, and the rotary component 604 has a connecting boss 6041 in the middle that connects to the second core component 502.

[0033] Regarding the structure of the aforementioned rotary drive core-pulling mechanism, based on the cooperative structure of the rotary transmission component 603 and the rotating component 604, the linear motion of the drive end of the rotary drive cylinder 602 is converted into a rotary motion. That is, the rotary drive cylinder 602 can drive the rotary transmission component 603 to reciprocate linearly relative to the second module 2, thereby causing the rotating component 604 to rotate synchronously with the second module 2 by a preset angle. The position of the molded product 8 remains unchanged, causing relative rotation between the second core component 502 and the molded product 8, thus loosening the connection between the second core component 502 and the molded product 8. When the second core component 502 is completely separated from the molded product 8 and the first core component 501 is also completely separated from the molded product 8, the supporting force of the first core component 501 and the second core component 502 is insufficient, causing the molded product 8 to completely fall off under its own weight.

[0034] Meanwhile, the meshing structure of the gear components and the teeth ensures the stability of the rotation of the rotating component 604 and allows for accurate control of the rotation angle.

[0035] Furthermore, in this embodiment, a rotary drive mounting assembly is provided on the second module 2. The rotary drive mounting assembly includes two rotary drive mounting seats 201. The two rotary drive mounting seats 201 are connected to form a linear motion channel 202 for the rotary transmission member 603 to move linearly and a rotary motion cavity 203 for the rotary member 604 to move rotatably.

[0036] The above structure can ensure the stability of the rotary transmission component 603 during reciprocating linear motion and the stability of the rotary component 604 during relative rotation with respect to the second module 2, further ensuring the demolding effect and product quality. Moreover, the rotary drive mounting assembly is formed by connecting two connectable rotary drive mounting bases 201, which is convenient for installation and maintenance.

[0037] In this embodiment, the specific installation structure of the core-pulling drive mechanism 6 is as follows: The core-pulling drive mechanism 6 also includes a core-pulling drive mounting assembly, which includes a core-pulling drive mounting plate 605, a core-pulling drive mounting column 606, and a core-pulling drive guide seat 607. The core-pulling drive mounting plate 605 is connected to the second module 2 through the core-pulling drive mounting column 606 and the core-pulling drive guide seat 607. A linear drive cylinder 601 and a rotary drive cylinder 602 are mounted on the core-pulling drive mounting plate 605. The core-pulling drive guide seat 607 is provided with a guide groove 6071. A linear drive guide 608 is provided between the drive end of the linear drive cylinder 601 and the first core component 501. The linear drive guide 608 slides in cooperation with the guide groove 6071.

[0038] In the above structure, the core-pulling drive mounting post 606 and the core-pulling drive guide seat 607 provide stable support for the connection structure between the core-pulling drive mounting plate 605 and the second module 2. The structure in which the guide groove 6071 cooperates with the linear drive guide 608 can also ensure the stability of the first core 501 during the reciprocating linear motion process.

[0039] The mold core driving mechanism 7 of this embodiment includes two mold core driving cylinders 701, which are respectively fixed to both ends of the second module 2. The driving end of one mold core driving cylinder 701 is connected to the first mold core component 3, and the driving end of the other mold core driving cylinder 701 is connected to the second mold core component 4. The second module 2 is provided with a guide rail 204, and the bottom of the first mold core 3 and the second mold core 4 is provided with a sliding member 702 that slides in cooperation with the guide rail 204.

[0040] Taking the attached drawings of this embodiment as an example, the two core drive cylinders 701 are fixed at the left and right ends of the second module 2, respectively, and the core pulling drive mechanism 6 is fixed at the upper end of the second module 2. The above layout is reasonable.

[0041] Meanwhile, an injection molding component 9 is provided on the first module 1, and the injection end of the injection molding component 9 is connected to the product cavity.

[0042] This embodiment also includes a demolding method for a vertical rotary core-pulling quick demolding structure. The demolding is accomplished using the aforementioned vertical rotary core-pulling quick demolding structure. First, the product is injection molded using the aforementioned injection molding assembly, and then demolding is performed. The specific steps of the demolding method are as follows: S1. The first module 1 and the second module 2 are moved away from each other by the module driving mechanism; S2. The first mold core 3 and the second mold core 4 are moved away from each other by the mold core driving mechanism 7; S3. The first core component 501 is separated from the molded product 8 by the linear drive core pulling mechanism 6, and the second core component 502 is separated from the molded product 8 by the rotary drive core pulling mechanism. S4. Remove the molded product 8.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A vertical rotary core-pulling quick demolding structure, characterized in that, include: First module, second module, first mold core component, second mold core component, core assembly, core pulling drive mechanism, mold core drive mechanism and module drive mechanism; The drive end of the module drive mechanism is connected to the first module and can drive the first module to move closer to or further away from the second module; The first mold core and the second mold core are slidably engaged with the second module. The driving end of the mold core driving mechanism is connected to the first mold core and the second mold core respectively, and can drive the first mold core and the second mold core to move closer or further apart. The first mold core has a first cavity, and the second mold core has a second cavity. The first mold core and the second mold core are close to each other and can form a product cavity with the first cavity and the second cavity. The core assembly includes a first core component and a second core component. The core-pulling drive mechanism includes a linear drive core-pulling drive mechanism and a rotary drive core-pulling mechanism. The drive end of the linear drive core-pulling drive mechanism is connected to the first core component and can drive the first core component to engage with or move away from the product cavity. The drive end of the rotary drive core-pulling mechanism is adjacent to the second core component and can drive the second core component to rotate relative to and engage with or move away from the product cavity.

2. The vertical rotary core-pulling quick demolding structure according to claim 1, characterized in that, The first core component is a straight core component structure, and the second core component is a bent core component structure.

3. The vertical rotary core-pulling quick demolding structure according to claim 2, characterized in that, The linear drive core-pulling mechanism includes a linear drive cylinder, and the drive end of the linear drive cylinder is connected to the first core component. The rotary drive core-pulling mechanism includes a rotary drive cylinder, a rotary transmission component, and a rotating component. The drive end of the rotary drive cylinder is connected to the rotary transmission component, the rotary transmission component cooperates with the rotating component, and the rotating component rotates with the second module. When the rotary drive cylinder drives the rotary transmission component to reciprocate linearly relative to the second module, it enables the rotating component to rotate relative to the second module. The rotating component is connected to the second core component.

4. The vertical rotary core-pulling quick demolding structure according to claim 3, characterized in that, The rotary transmission component is a toothed component, and the rotary component is a fan-shaped gear component that meshes with the toothed component. The rotary component has a connecting boss in the middle that connects to the second core component.

5. The vertical rotary core-pulling quick demolding structure according to claim 4, characterized in that, The second module is provided with a rotary drive mounting assembly, which includes two rotary drive mounting seats. The two rotary drive mounting seats are connected to form a linear motion channel for the rotary transmission component to move linearly and a rotary motion cavity for the rotary component to move rotatably.

6. The vertical rotary core-pulling quick demolding structure according to claim 5, characterized in that, The core-pulling drive mechanism further includes a core-pulling drive mounting assembly, which includes a core-pulling drive mounting plate, a core-pulling drive mounting column, and a core-pulling drive guide seat. The core-pulling drive mounting plate is connected to the second module through the core-pulling drive mounting column and the core-pulling drive guide seat. The linear drive cylinder and the rotary drive cylinder are mounted on the core-pulling drive mounting plate. The core-pulling drive guide seat is provided with a guide groove. A linear drive guide is provided between the drive end of the linear drive cylinder and the first core component. The linear drive guide is slidably engaged with the guide groove.

7. The vertical rotary core-pulling quick demolding structure according to claim 1, characterized in that, The mold core driving mechanism includes two mold core driving cylinders, which are respectively fixed to both ends of the second module. The driving end of one mold core driving cylinder is connected to the first mold core component, and the driving end of the other mold core driving cylinder is connected to the second mold core component. The second module is provided with a guide rail, and the bottom of the first mold core and the second mold core are provided with sliding parts that slide in cooperation with the guide rail.

8. The vertical rotary core-pulling quick demolding structure according to claim 1, characterized in that, The first module is equipped with an injection molding assembly, and the injection end of the injection molding assembly is connected to the product cavity.

9. A demolding method for a vertical rotary core-pulling rapid demolding structure, characterized in that, The demolding is accomplished using the vertical rotary core-pulling rapid demolding structure described in any one of claims 1-8, and the steps of the demolding method are as follows: S1. The first module and the second module are moved away from each other by the module driving mechanism; S2. The first mold core and the second mold core are moved away from each other by the mold core driving mechanism; S3. The first core component is separated from the molded product by a linear drive core-pulling mechanism, and the second core component is separated from the molded product by a rotary drive core-pulling mechanism. S4. Remove the molded product.

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