Buckling mechanism of plastic discharging mold

Abstract

The utility model discloses a buckling mechanism for a plastic mold, which belongs to the technical field of plastic molds and comprises a rear mold block, a rear mold core is mounted in the middle of the upper end of the rear mold block, and the rear mold core and the rear mold block are fixed through a positioning bolt on the side edge; the upper end of the rear module is fixedly connected with a fixed insert, the fixed insert is located on the inner side of the rear mold core, a movable insert is installed between the fixed insert and the rear mold core, the lower end of the movable insert is provided with an ejector pin component, and the lower end of the ejector pin component is connected with a bearing bolt through an auxiliary spring; and the bearing bolt is screwed into the rear module, and a guide groove is formed in the middle of the bearing bolt. According to the plastic mold buckling mechanism, the problem of complexity and interference of the top of a product can be ignored so that the product can be produced smoothly, the same ejector pin can be used for the second time, and the service life of the ejector pin is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, in particular to a buckling mechanism for a plastic mold. Background Art

[0002] Since there are various undercuts in plastic mold products, the complexity of the products makes it difficult for the products to be smoothly demolded and produced. In order to improve the producibility of the products, a buckle structure is usually used in the mold to enable smooth production of the products.

[0003] For example, a mold slide structure that is convenient for replacing inserts and has a publication number of CN218785718U includes: a mold core, and a slider that can slide horizontally is embedded in the top end face of the mold core. A shovel that slides up and down is provided inside the mold core, and the shovel drives the slider to slide in the horizontal direction. An insert is embedded in the slider, and a pressure block is detachably connected to the slider, and the pressure block presses the insert against the slider. A spring pin is provided in the slider, and the top end of the spring pin passes through the pressure block and is flush with the top end face of the pressure block, and a spring is sleeved on the bottom end of the spring pin. An avoidance step is provided on the sliding mating surface between the mold core and the slider, and the spring pin can slide with the slider to the top of the avoidance step, and the bottom end of the spring pin can be pressed into the avoidance step.

[0004] The above-mentioned prior art has the following technical problems: the existing mold slide structure provides an upward thrust for the spring pin to push its insert through the spring when in use; however, after a long period of use, the end of the spring pin is prone to deformation, and it needs to be replaced after the deformation, resulting in a short service life of the spring pin; when the plastic mold is designed with a sloping top, the sloping top is generally connected to the top of the product to facilitate the processing and assembly of the mold; due to the diversity and complexity of the products, if the top of the product is too complicated, or the top of the sloping top interferes with the movement direction of the sloping top, the product structure will be destroyed when the product is ejected, or the product cannot be ejected; the existing sloping top structure cannot ignore the complexity and interference problems of the product top, so that the product cannot be produced smoothly. Utility Model Content

[0005] The utility model aims to provide a plastic mold buckling mechanism to solve the problem proposed in the above background technology that the existing mold sliding structure on the market provides an upward thrust for a spring pin to push its insert when in use. However, after a long period of use, the end of the spring pin is prone to deformation. After the spring pin is deformed, it needs to be replaced, which leads to a short service life of the spring pin. When the plastic mold is designed with a sloping top, the sloping top is generally connected to the top of the product to facilitate the processing and assembly of the mold. Due to the diversity and complexity of the products, if the top of the product is too complicated, or the top of the sloping top interferes with the movement direction of the sloping top, the product structure is destroyed when the product is ejected, or the product cannot be ejected. The existing sloping top structure cannot ignore the complexity and interference of the product top, so that the product cannot be produced smoothly.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plastic mold buckling mechanism, including a rear module, a rear mold core is installed in the middle of the upper end of the rear module, and the rear mold core and the rear module are fixed by positioning bolts on the side; it also includes: a fixed insert is fixedly connected to the upper end of the rear module, and the fixed insert is located on the inner side of the rear mold core, a moving insert is installed between the fixed insert and the rear mold core, and a ejector component is arranged at the lower end of the moving insert, the lower end of the ejector component is connected to each other through an assist spring and a bearing bolt, and the bearing bolt is screwed into the interior of the rear module, and a guide groove is opened in the middle of the bearing bolt.

[0007] Preferably, the outer wall of the rear mold core and the middle inner wall of the rear module are in contact with each other, and the rear mold core and the rear module are locked and connected by a plurality of positioning bolts.

[0008] By adopting the above technical solution, by screwing a plurality of positioning bolts into the interior of the rear mold core and the rear module, the stability between the two can be easily ensured.

[0009] Preferably, the lower left end of the moving insert is in contact with the upper end of the ejector component in an initial state, and the ejector component and the fixed insert are slidably connected.

[0010] By adopting the above technical solution, the ejector component can be pushed by sliding the ejector component inside the fixed insert.

[0011] Preferably, the ejector component consists of a first ejector, a receiving groove and a second ejector, and the upper end of the first ejector is provided with a receiving groove, the middle part of the first ejector is penetrated by a second ejector, and the lower end of the second ejector is inserted into the guide groove in the middle part of the bearing bolt.

[0012] By adopting the above technical solution and arranging the first ejector pin and the second ejector pin, when the end of the first ejector pin is deformed, the second ejector pin can still be used, thereby increasing the service life of the ejector pin component.

[0013] Preferably, a section of the surface of the second ejector pin located inside the first ejector pin is provided with threads, and the second ejector pin and the first ejector pin are connected by threads.

[0014] By adopting the above technical solution, through the threaded connection between the second ejector pin and the first ejector pin, after the end of the second ejector pin is deformed, the second ejector pin can be rotated so that the upper end is received in the guide groove of the first ejector pin.

[0015] Preferably, the upper end of the second ejector pin is higher than the upper end of the first ejector pin in an initial state, and the inner diameter of the receiving groove on the first ejector pin is larger than the diameter of the second ejector pin.

[0016] By adopting the above technical solution, the inner diameter of the accommodating groove is larger than the diameter of the second ejector pin, so that after the end of the second ejector pin is deformed, it can still be accommodated in the accommodating groove.

[0017] Preferably, the lower end plane of the second ejector pin is flush with the opening of the guide groove in the bearing bolt, and the inner diameter of the guide groove is larger than the diameter of the second ejector pin.

[0018] By adopting the above technical solution, the lower end plane of the second ejector pin and the opening of the guide groove are flush with each other, so that the second ejector pin can be easily screwed using a tool.

[0019] Compared with the prior art, the utility model has the following beneficial effects: the buckle mechanism for the plastic mold can ignore the complexity and interference problems of the top of the product so that the product can be produced smoothly, and the same ejector pin can be used twice, thereby increasing the service life of the ejector pin;

[0020] 1. A moving insert is provided, and the front module presses the moving insert back, so that the moving insert retains the original buckle position of the product, so that the injection position can be completed smoothly. When the mold is in the open state, the booster spring squeezes the ejector component to eject the moving insert, so that the moving insert is separated from the product buckle position, so that the product can be taken out smoothly. When the moving insert is separated from the product buckle position, it does not affect the top of the product. The structure of the top of the product and the buckle position of the product are in a non-interference state, so that the complexity and interference problems of the top of the product can be ignored when the product is buckled, so that the product can be produced smoothly;

[0021] 2. A first ejector pin and a second ejector pin are provided. In the initial state, the second ejector pin pushes the moving insert. When the end of the second ejector pin is deformed after long-term use, the second ejector pin is twisted to move the second ejector pin downward and the upper end of the second ejector pin is accommodated in the receiving groove of the first ejector pin. After that, the second ejector pin can be used to push the moving insert, thereby improving the service life of the ejector pin component.

[0022] 3. A bearing bolt is provided. Since the upper end height of the first ejector pin is lower than the upper end height of the second ejector pin, when the second ejector pin is stored inside the first ejector pin, the bearing bolt is rotated to move upward. The height change of the bearing bolt can also push the first ejector pin to move upward synchronously, so that the upper end of the first ejector pin fits with the moving insert in the initial state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the rear mold core and positioning bolt structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the fixed insert and the moving insert of the utility model;

[0026] Figure 4 For this utility model Figure 3 The enlarged structural diagram at A in the middle;

[0027] Figure 5 This is a schematic diagram of the structure of the motion insert and the second ejector pin of the utility model;

[0028] Figure 6 This is a schematic diagram of the cross-sectional structure of the load-bearing bolt and the guide groove of the utility model;

[0029] Figure 7 For this utility model Figure 6 Enlarged structural diagram at B in the middle.

[0030] In the figure: 1, rear module; 2, rear mold core; 3, positioning bolt; 4, fixed insert; 5, moving insert; 6, ejector component; 601, first ejector; 602, accommodating groove; 603, second ejector; 7, assist spring; 8, load-bearing bolt; 9, guide groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Embodiment 1:

[0033] See also Figure 1-Figure 6 When designing a sloping top for a plastic mold, the sloping top is generally connected to the top of the product to facilitate the processing and assembly of the mold. Due to the diversity and complexity of the products, if the top of the product is too complicated, or the top of the sloping top interferes with the movement direction of the sloping top, the product structure will be destroyed when the product is ejected, or the product cannot be ejected. The existing sloping top structure cannot ignore the complexity and interference of the product top, so that the product cannot be produced smoothly. In order to solve this technical problem, this embodiment discloses the following technical content;

[0034] A plastic mold buckling mechanism includes a rear module 1, a rear mold core 2 is installed in the middle of the upper end of the rear module 1, and the rear mold core 2 and the rear module 1 are fixed by a side positioning bolt 3; a fixed insert 4 is fixedly connected to the upper end of the rear module 1, and the fixed insert 4 is located on the inner side of the rear mold core 2, a moving insert 5 is installed between the fixed insert 4 and the rear mold core 2, and an ejector component 6 is arranged at the lower end of the moving insert 5, and the ejector component 6 is connected to each other through a booster spring 7 and a bearing bolt 8 through the lower end, and the bearing bolt 8 is screwed into the interior of the rear module 1, and a guide groove 9 is provided in the middle of the bearing bolt 8. The outer wall of the rear mold core 2 and the middle inner wall of the rear module 1 are in contact with each other, and the rear mold core 2 and the rear module 1 are locked and connected by a plurality of positioning bolts 3. The lower left end of the moving insert 5 is in contact with the upper end of the ejector component 6 in the initial state, and the ejector component 6 and the fixed insert 4 are in sliding connection.

[0035] The snap-in mechanism is divided into a mold closing state and a mold opening state. When the snap-in mechanism is in the mold closing state, the front module presses back the moving insert 5, so that the moving insert 5 maintains the original snap-in state of the product, so that the injection glue position can be completed smoothly. At this time, the moving insert 5 exerts pressure on the ejector component 6. After the ejector component 6 is pressed, the booster spring 7 is compressed. When the snap-in mechanism is in the mold opening state, the booster spring 7 squeezes the ejector component 6 to eject the moving insert 5, so that the moving insert 5 is separated from the product snap-in position, so that the product can be taken out smoothly. Due to the particularity of the snap-in mechanism, when the moving insert 5 is separated from the product snap-in position, it does not affect the top of the product. The structure of the top of the product and the snap-in position of the product do not interfere with each other. Therefore, when the product is snap-in, the complexity and interference problems of the top of the product can be ignored, so that the product can be produced smoothly.

[0036] Embodiment 2:

[0037] The technical content disclosed in this embodiment is a further improvement on the above-mentioned embodiment 1. The existing mold slide structure provides an upward thrust of the spring pin to push its insert through the spring when in use. However, after a long period of use, the end of the spring pin is prone to deformation. After the spring pin is deformed, it needs to be replaced, resulting in a short service life of the spring pin. In order to solve this technical problem, this embodiment discloses the following technical content, such as Figure 3-Figure 7 As shown;

[0038] The ejector component 6 is composed of a first ejector 601, a receiving groove 602 and a second ejector 603, and the upper end of the first ejector 601 is provided with a receiving groove 602, the middle part of the first ejector 601 is penetrated by a second ejector 603, and the lower end of the second ejector 603 is inserted into the guide groove 9 in the middle part of the bearing bolt 8. A section of the surface of the second ejector 603 located inside the first ejector 601 is provided with a thread, and the second ejector 603 and the first ejector 601 are threadedly connected. The upper end of the second ejector 603 is higher than the upper end of the first ejector 601 in the initial state, and the inner diameter of the receiving groove 602 on the first ejector 601 is larger than the diameter of the second ejector 603. The lower end plane of the second ejector 603 is flush with the opening of the guide groove 9 in the bearing bolt 8, and the inner diameter of the guide groove 9 is larger than the diameter of the second ejector 603.

[0039] In the initial state, the upper end of the second ejector pin 603 fits with the moving insert 5, and the moving insert 5 is pushed by the second ejector pin 603. When the end of the second ejector pin 603 is deformed after long-term use, the bottom of the second ejector pin 603 is twisted. Since the second ejector pin 603 is threadedly connected to the first ejector pin 601, when the second ejector pin 603 is rotated, it can be moved below the first ejector pin 601, so that the upper end of the second ejector pin 603 is accommodated in the accommodating groove 602 inside the first ejector pin 601. At this time, the bearing bolt 8 is rotated to move the bearing bolt 8 upward. The upward movement of the bearing bolt 8 can push the first ejector pin 601 to move upward synchronously, thereby making the upper end of the first ejector pin 601 fit with the moving insert 5. Thereafter, the moving insert 5 can be pushed by the first ejector pin 601, thereby improving the service life of the ejector component 6.

[0040] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A plastic mold snap-in mechanism, comprising a rear module (1), a rear mold core (2) being installed at the middle of the upper end of the rear module (1), and the rear mold core (2) and the rear module (1) being fixed by positioning bolts (3) on the side; It is characterized in that Also includes: The upper end of the rear module (1) is fixedly connected to a fixed insert (4), and the fixed insert (4) is located on the inner side of the rear mold core (2). A moving insert (5) is installed between the fixed insert (4) and the rear mold core (2), and a pin component (6) is provided at the lower end of the moving insert (5). The lower end of the pin component (6) is connected to each other through an assist spring (7) and a bearing bolt (8), and the bearing bolt (8) is screwed into the interior of the rear module (1), and a guide groove (9) is provided in the middle of the bearing bolt (8).

2. A plastic mold snapping mechanism according to claim 1, characterized in that: The outer wall of the rear mold core (2) and the middle inner wall of the rear module (1) fit each other, and the rear mold core (2) and the rear module (1) are locked and connected via a plurality of positioning bolts (3).

3. The plastic mold snapping mechanism according to claim 1, characterized in that: The lower left end of the moving insert (5) is in contact with the upper end of the ejector component (6) in an initial state, and the ejector component (6) and the fixed insert (4) are slidably connected.

4. The plastic mold snapping mechanism according to claim 1, characterized in that: The ejector pin component (6) is composed of a first ejector pin (601), a receiving groove (602) and a second ejector pin (603), wherein the upper end of the first ejector pin (601) is provided with a receiving groove (602), the middle part of the first ejector pin (601) is penetrated by a second ejector pin (603), and the lower end of the second ejector pin (603) is inserted into a guide groove (9) in the middle part of the bearing bolt (8).

5. The plastic mold snapping mechanism according to claim 4, characterized in that: A section of the surface of the second ejector pin (603) located inside the first ejector pin (601) is provided with a thread, and the second ejector pin (603) and the first ejector pin (601) are connected by threads.

6. The plastic mold snapping mechanism according to claim 4, characterized in that: The upper end of the second ejector pin (603) is higher than the upper end of the first ejector pin (601) in an initial state, and the inner diameter of the accommodating groove (602) on the first ejector pin (601) is greater than the diameter of the second ejector pin (603).

7. The plastic mold snapping mechanism according to claim 4, characterized in that: The lower end plane of the second ejector pin (603) is flush with the opening of the guide groove (9) in the bearing bolt (8), and the inner diameter of the guide groove (9) is greater than the diameter of the second ejector pin (603).

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