A mold having a snap demolding mechanism

Abstract

The utility model discloses a mould with buckle demoulding mechanism, including mould frame, mould core and assemble in the ejection mechanism of mould frame still including buckle demoulding mechanism, the buckle demoulding mechanism includes front mould insert rod, and this front mould insert rod is by two or more than two front mould inserts and is closed to form, one end of each of the front mould inserts is fixedly connected with the swing component, and the swing component is rotatably assembled in the ejection plate group of the ejection mechanism through the rotating shaft, the swing component is assembled with the rotating shaft, each front mould insert has the reverse buckle part, and two or more than two reverse buckle parts are closed to form the reverse buckle cavity that adapts product buckle forming processing with the closed front mould inserts, each reverse buckle part is driven with the ejection or reset of the ejection mechanism, and the front mould inserts are closed or separated, make the reverse buckle cavity separate buckle or close forming, and the reverse buckle cavity separates buckle and realizes the buckle position of the product after forming to separate buckle, thereby avoiding product to pull the injury.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to a mold with a snap-on release mechanism. Background Technology

[0002] To manufacture such Figure 7 The product shown has the following features: Figure 7 The snap-fit ​​structure marked 710 is effective and protruding, and needs to be released during the injection molding process to achieve the desired result.

[0003] Existing pig stomach molds often incorporate the 710 buckle design within the front mold structure. This makes the buckle position prone to damage during the unhooking process. However, product processing requirements do not allow for and cannot accept product damage. Therefore, this undercut structure is not suitable for forced unhooking.

[0004] Therefore, it is necessary to address issues such as Figure 1 The product shown is designed with a release mechanism specifically for the 710 buckle structure to solve the technical problem of product damage caused by release. Utility Model Content

[0005] To address the technical problems existing in the prior art, the purpose of this utility model is to provide a mold with a snap-on release mechanism. To achieve the above objective, this utility model adopts the following technical solution: A mold with a snap-on demolding mechanism includes a mold frame, a mold core, and an ejection mechanism assembled in the mold frame, and also includes a snap-on demolding mechanism; The snap-on demolding mechanism includes a front mold insert, which is formed by two or more front mold inserts joined together. One end of each of the aforementioned front mold inserts is fixedly connected to the swing component, and the swing component is rotatably assembled in the ejection plate assembly of the ejection mechanism via a rotating shaft; the swing component is equipped with a rotating shaft, each front mold insert has an undercut portion, and two or more undercut portions together with the mating front mold inserts form an undercut cavity adapted for product snap-fit ​​forming. Each of the undercut parts, as ejected or reset by the ejection mechanism, drives the front mold insert to engage or disengage, causing the undercut cavity to disengage or close and form.

[0006] A further preferred embodiment: the undercut portion and the swing component are respectively positioned at both ends of the front mold insert; The outer surface of the connection between the undercut and the front mold insert is a guide surface; The guide surfaces of two or more front mold inserts are enclosed to form a conical surface, which is used to drive the front mold inserts to engage or disengage.

[0007] A further preferred embodiment is that the conical surface is an annular surface, and its outer diameter gradually increases along the mold opening direction.

[0008] A further preferred embodiment: the mold core includes a rear mold core and a front mold core, wherein: The reset rod of the ejection mechanism passes through the rear mold core and abuts against the front mold core. The reset rod is connected to the ejection plate assembly and is driven by the ejection plate assembly to perform ejection displacement. The front mold insert is placed in the clearance hole opened in the rear mold core; The inner diameter of the relief hole is adapted to the outer diameter of the undercut portion to restrict the undercut portion.

[0009] A further preferred embodiment: the mold frame includes a rear template and a base plate, and the rear template is provided with a receiving groove.

[0010] A further preferred embodiment: the ejection mechanism includes an ejection plate assembly and the reset rod, wherein: The ejector plate assembly is placed inside the receiving groove; One end of the reset rod is connected to the ejector plate assembly, and the other end passes through the rear mold core and contacts the front mold core. The reset rod is driven by the ejector plate assembly to eject in the direction of the front mold core, thereby driving the front mold core to separate from the rear mold core; The ejector plate assembly that performs ejection displacement synchronously drives the swing component and the front mold insert to move synchronously towards the front mold core, eliminating the restriction of the rear mold core on the undercut part, so that the undercut part drives the swing component to separate and rotate around the rotation axis through the front mold insert rod, thereby realizing the product release.

[0011] By adopting the above technical solution, this utility model has the following advantages compared with the prior art: This utility model utilizes the combination of a front mold insert, a swing component, and a rotating shaft to form an inverted cavity for snap-fit ​​molding, which can be controlled by rotation to separate the front mold insert externally and close it internally. During the external rotation separation process, the snap-fit ​​position on the molded product is released and separated, thereby avoiding product damage. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a mold with a snap-on mold release mechanism as described in an embodiment of this utility model; Figure 2 yes Figure 1 The structure shown is a cross-sectional view along AA; Figure 3 yes Figure 2 A schematic diagram of the mold opening state of the structure shown; Figure 4 yes Figure 3 Enlarged view of a portion of point a; Figure 5 This is a schematic diagram of the snap-on demolding mechanism described in the embodiments of this utility model; Figure 6 yes Figure 5 An exploded view of the structure shown; Figure 7 This is a structural schematic diagram of the product described in the embodiments of this utility model.

[0013] The markings on the accompanying drawings in the above specification are explained as follows: 100. Front mold core; 200. Rear mold core; 300, Post Template; 400. Base plate; 500. Ejection mechanism; 510. Ejector plate assembly; 520. Reset component; 521. Reset rod; 522. Reset block; 600. Clip-on demolding mechanism; 610. Front mold insert; 611. Undercut groove; 612. Fixing block; 620. Swinging component; 630. Rotating shaft; 700, Product; 710, Buckle. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0015] It should be noted that in this utility model, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element of this utility model must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0016] Example like Figures 1 to 3 As shown, a mold with a snap-on demolding mechanism includes a mold frame, a mold core, an ejection mechanism, and a snap-on demolding mechanism. The ejection mechanism and the snap-on demolding mechanism are both assembled in the mold frame, and the ejection mechanism and the snap-on demolding mechanism are slidably connected to the mold core.

[0017] like Figures 1 to 3 As shown, the mold frame includes a base plate and a rear template, the mold core is fixedly assembled on the rear template, and the rear template is fixedly connected to the base plate. like Figures 2 to 3As shown, the rear template has a receiving groove with the opening facing the mold core; the opening end of the receiving groove contacts the mold core to form a receiving cavity; the ejection mechanism and the snap-on demolding mechanism are both assembled in the receiving cavity, and the ejection mechanism and the snap-on demolding mechanism extend into the mold core and are slidably connected to the mold core.

[0018] like Figures 2 to 3 As shown, the mold core includes a front mold core and a rear mold core. One end of the front mold core is fixedly connected to the driving component, and the other end of the front mold core away from the driving component contacts the rear mold core. The front mold core has a front product receiving groove, and the opening direction of the front product receiving groove faces the rear template. The rear mold core is fixedly assembled on the rear template, and the rear mold core has a rear product receiving groove, and the opening direction of the rear product receiving groove faces the front mold core. The opening end of the front product receiving groove contacts the opening end of the rear product receiving groove, and together with the snap-on demolding mechanism, they form a molding cavity for product molding.

[0019] like Figures 2 to 3 As shown, the ejection mechanism includes an ejection plate assembly and a reset member. The ejection plate assembly is assembled in the accommodating cavity. One end of the reset member is fixedly connected to the ejection plate assembly, and the other end of the reset member away from the ejection plate assembly passes through the rear mold core and extends into the front mold core, abutting against the front mold core. The reset component includes a reset rod and a reset block. The reset block is fixedly connected to the reset rod. One end of the reset rod is fixedly connected to the ejector plate assembly. The other end of the reset rod, away from the ejector plate assembly, passes through the rear mold core and is fixedly connected to the reset block. The reset block extends into the front mold core and abuts against the front mold core. The ejector plate assembly includes an ejector receiving groove, the opening of which faces the front mold core.

[0020] like Figure 3 As shown, when the ejector plate assembly is driven to eject towards the front mold core in the cavity along the mold opening direction, the ejector plate assembly drives the reset rod, which in turn drives the reset block to eject towards the front mold core in the mold opening direction until the ejector plate assembly contacts the mold core. The ejector plate assembly's ejection displacement towards the front mold core in the cavity is then restricted and ends. When the mold needs to be reset after mold opening, the driving component drives the front mold core to reset towards the base plate in the mold opening direction. When the front mold core moves to contact the reset block, the reset block drives the reset rod, which in turn drives the ejector plate assembly to reset towards the base plate in the cavity until the reset is complete.

[0021] like Figures 2 to 6 As shown, the snap-on demolding mechanism includes a front mold insert, which is composed of mating front mold inserts. Each front mold insert is fixedly connected to a swinging component, and the swinging component is equipped with a rotating shaft. The swinging component is rotatably assembled in the ejection receiving groove. The rotating shaft passes through the swinging component and is fixedly connected to the ejection plate assembly. The rotating shaft is slidably connected to the swinging component. One end of the front mold insert is fixedly connected to the swinging component, and the other end of the front mold insert away from the swinging component passes through the rear mold core and extends into the rear product receiving groove. The other end of the front mold insert away from the swinging component, together with the front product receiving groove and the rear product receiving groove, forms a molding cavity for product molding.

[0022] The rotating shaft is a cylindrical shaft. Specifically, the cross-section of the cylindrical shaft along the mold opening direction is circular. The cylindrical shaft passes through the swinging component in a direction parallel to the bottom surface of the ejection receiving groove, and both ends of the cylindrical shaft extend into the side walls of the ejection receiving groove. The cylindrical shaft is fixedly connected to the ejection plate assembly, and the cylindrical shaft is slidably connected to the swinging component, so that the swinging component can swing axially within the ejection receiving groove with the axis of the cylindrical shaft as the center.

[0023] like Figures 4 to 6 As shown, the swing component is a single piece, assembled within the ejection receiving groove, and connected to the rotating shaft. Specifically, the swing component includes a fixing groove, a fixing through hole, and a rotating shaft through hole. The fixing groove is formed on one outer wall of the swing component along the mold opening direction, and the opening direction of the fixing groove faces away from the inner wall of the ejection receiving groove. The fixing through hole is vertically formed at the bottom of the fixing groove. The rotating shaft through hole penetrates the swing component in a direction parallel to the bottom surface of the ejection receiving groove, and the rotating shaft through hole is perpendicular to the fixing through hole. In this embodiment, the number of the swinging components is adapted to the number of the front mold inserts. In this embodiment, there are two swinging components. The two swinging components are symmetrically assembled in the ejector receiving groove along the mold opening direction. The open ends of the two fixed grooves are in contact, so that a contact surface is formed between the two swinging components. It is worth noting that the cross section of the swinging component along the mold opening direction is trapezoidal, so that the swinging component includes, but is not limited to, an inclined surface. The inclined surface is the outer surface of the swinging component near the bottom of the ejector receiving groove and adjacent to the contact surface. like Figures 4 to 6As shown, the front mold insert is a straight rod with a circular outer surface. It is formed by two front mold inserts joined together, i.e., the radial cross-section of each front mold insert is semi-circular. The front mold insert includes a connecting part, an undercut part, and a fixing part. The fixing part is fixedly connected to the swing component. One end of the connecting part is fixedly connected to the fixing part, and the other end of the connecting part away from the fixing part is fixedly connected to the undercut part. The connecting part, the undercut part, and the fixing part are integrally injection molded parts. One outer surface of the front mold insert is a single plane along the mold opening direction. Specifically: the connecting part is a columnar rod, and in this embodiment, the columnar rod is a columnar rod with a semi-circular cross-section; the fixing part includes a fixing block, the fixing block is fixedly assembled in the fixing groove, the pin passes through the fixing through hole and penetrates into the fixing block, so that the fixing block is fixedly connected to the rocker insert, thereby fixing the front mold insert to the swing component; The undercut portion includes an undercut groove, which is formed on the surface of the undercut portion away from the connecting portion along the mold opening direction, and the opening direction of the undercut groove is opposite to the connecting portion; the outer diameter of the undercut portion is larger than the outer diameter of the connecting portion; More specifically: In this embodiment, there are two front mold inserts. The two front mold inserts are fixedly connected to the two rocker inserts respectively, and the two integral planar ends of the two front mold inserts are in contact with each other, so that the open ends of the two undercut grooves are in contact to form an undercut cavity.

[0024] It should be noted that the front mold insert passes through the through hole in the rear mold core. This through hole is a clearance hole, the shape and diameter of which are adapted to the front mold insert. The purpose is to ensure that the two front mold inserts, which are stationary in the rear mold core, always remain in a mutually engaged state, thus obtaining a complete undercut cavity. In this state, the product is formed and processed in the corresponding position within the undercut cavity. After processing is completed, the ejector plate assembly, which performs ejection displacement, drives the two front mold inserts to disengage from the clearance hole through the swinging component. The two disengaged front mold inserts are also in a released state. The two undercut parts that have disengaged from the clearance hole can be separated by the swinging of the swinging component, thereby allowing the formed product to disengage from the undercut cavity and achieving the purpose of product disengagement.

[0025] Specifically: such as Figure 4As shown, when the ejector plate assembly is driven to eject towards the front mold core in the cavity along the mold opening direction, the ejector plate assembly drives the swinging component, which in turn drives the front mold insert to eject towards the front mold core along the mold opening direction. When the two undercuts completely pass through the rear mold core and continue to eject towards the front mold core, because the outer diameter of the undercut is larger than the outer diameter of the connecting part, and the two undercuts are subjected to a force opposite to the ejection displacement, they will respectively move towards... Figure 4 The displacement is made in the direction shown, so that the two front mold inserts respectively drive the two swing components, which rotate in the ejection receiving groove with the two rotation axes as their axes of rotation. Figure 4 Rotating in the direction shown causes the contact ends of the two undercut grooves to gradually separate from the contact state, thereby causing the undercut cavity to separate.

[0026] like Figure 7 As shown, the product includes a buckle, which is integrally formed with the product; the external dimensions of the buckle are adapted to the internal shape and dimensions of the inverted cavity.

[0027] Combination Figures 1 to 7 As shown, the product demolding steps for the above-mentioned mold with a snap-fit ​​demolding mechanism are as follows: Step 1: Mold making: When the mold needs to be opened after injection molding, the front mold core is driven to move away from the rear mold core, thus performing the mold opening displacement.

[0028] Step 2: Ejection: When the ejector plate assembly is driven, it moves out of the cavity along the mold opening direction toward the front mold core; the ejector plate assembly drives the reset rod, and the reset rod drives the reset block to move out of the cavity along the mold opening direction toward the front mold core; at the same time, the ejector plate assembly synchronously drives the swing component and the front mold insert to move out of the cavity along the mold opening direction toward the front mold core.

[0029] Step 3: Core Removal When the two undercuts completely pass through the rear mold core and continue to be ejected towards the front mold core, because the outer diameter of the undercut is larger than the outer diameter of the connecting part, and the two undercuts are subjected to a force opposite to the ejection displacement, they will respectively move towards... Figure 4 The displacement is made in the direction shown; thereby causing the two front mold inserts to drive the two rocker inserts respectively, and to move in the ejection receiving groove with the axes of the two rotation shafts as the center. Figure 4 The product rotates in the direction shown; the contact ends of the two undercut grooves gradually separate from the contact state, thereby causing the buckle in the product to begin to disengage from the undercut cavity; When the ejector plate assembly continues to move 19.1 mm towards the front mold core in the ejector receiving groove, that is, when the ejector plate assembly contacts the mold core, the ejector displacement of the ejector plate assembly in the receiving cavity along the mold opening direction towards the front mold core is restricted, thereby ending the ejector displacement of the ejector plate assembly in the ejector receiving groove; at this time, the two undercut portions are as follows Figure 4 The offset displacement in the direction shown ends, causing the buckle to completely disengage from the undercut cavity, thereby completing the core pulling and allowing the product to completely detach from the mold.

[0030] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A mold with a snap-on release mechanism, characterized in that: It includes a mold frame, a mold core, and an ejection mechanism assembled in the mold frame, as well as a snap-on demolding mechanism; The snap-on demolding mechanism includes a front mold insert, which is formed by two or more front mold inserts joined together. One end of each of the aforementioned front mold inserts is fixedly connected to the swing component, and the swing component is rotatably assembled in the ejection plate assembly of the ejection mechanism via a rotating shaft; the swing component is equipped with a rotating shaft, each front mold insert has an undercut portion, and two or more undercut portions together with the mating front mold inserts form an undercut cavity adapted for product snap-fit ​​forming. Each of the undercut parts, as ejected or reset by the ejection mechanism, drives the front mold insert to engage or disengage, causing the undercut cavity to disengage or close and form.

2. The mold with a snap-on release mechanism according to claim 1, characterized in that: The undercut and the swinging component are respectively placed at both ends of the front mold insert; The outer surface of the connection between the undercut and the front mold insert is a guide surface; The guide surfaces of two or more front mold inserts are enclosed to form a conical surface, which is used to drive the front mold inserts to engage or disengage.

3. The mold with a snap-on release mechanism according to claim 2, characterized in that: The conical surface is an annular surface, and its outer diameter gradually increases along the mold opening direction.

4. The mold with a snap-on release mechanism according to claim 1, characterized in that: The mold core includes a rear mold core and a front mold core, wherein: The reset rod of the ejection mechanism passes through the rear mold core and abuts against the front mold core. The reset rod is connected to the ejection plate assembly and is driven by the ejection plate assembly to perform ejection displacement. The front mold insert is placed in the clearance hole opened in the rear mold core; The inner diameter of the relief hole is adapted to the outer diameter of the undercut portion to restrict the undercut portion.

5. The mold with a snap-on release mechanism according to claim 4, characterized in that: The mold frame includes a rear template and a base plate, and the rear template is provided with a receiving groove.

6. The mold with a snap-on release mechanism according to claim 5, characterized in that: The ejection mechanism includes an ejection plate assembly and a reset rod, wherein: The ejector plate assembly is placed inside the receiving groove; One end of the reset rod is connected to the ejector plate assembly, and the other end passes through the rear mold core and contacts the front mold core. The reset rod is driven by the ejector plate assembly to eject in the direction of the front mold core, thereby driving the front mold core to separate from the rear mold core; The ejector plate assembly that performs ejection displacement synchronously drives the swing component and the front mold insert to move synchronously towards the front mold core, eliminating the restriction of the rear mold core on the undercut part, so that the undercut part drives the swing component to separate and rotate around the rotation axis through the front mold insert rod, thereby realizing the product release.

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