Core pulling assembly with diagonal ejector

Abstract

The utility model belongs to injection mold technical field especially relates to core -pulling assembly of row position with inclined top, including assembly seat, row position, inclined top and drive component, the row position is connected with the assembly seat sliding in horizontal core -pulling direction, the first protruding is protruded with one end of the row position close to cavity, one end of the inclined top is established on the assembly seat swingably, the other end is along the core -pulling direction of inclination and its end is equipped with the second protruding of with the first step adaptation, the second protruding is spliced with the first protruding and forms the core -pulling, the output of drive component is connected with the row position transmission. The present application utilizes single drive control row position and inclined top to carry out stripping action, has saved the cost of drive and installation space, and then has simplified mould structure, and the one end of inclined top is penetrated through the row position, and the other end is swingably connected with the assembly seat, realizes the linkage movement with the row position, is favorable for improving stripping efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and in particular relates to a core-pulling assembly with a sliding core and an inclined ejector. Background Technology

[0002] Injection molds are devices used in the production of plastic products. They inject molten plastic into molding components (cavities and cores), which are then cooled and solidified to produce the plastic product. Core-pulling assemblies are used to handle side recesses or holes in the product. When the hole is located on the end face of the side recess, demolding is achieved by a single core-pulling operation using a sliding block. When the hole is located on the side of the side recess, demolding is achieved by a secondary core-pulling operation using a sliding block and a lifter. However, in the mold structure with secondary core-pulling, the sliding block and the lifter are each equipped with independent drives to complete the sequential core-pulling actions. But this structure has the following drawbacks: complex structure, large installation space required for the mold, and low demolding efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a core-pulling assembly with a slanted top, which aims to solve the technical problems in the prior art.

[0004] To achieve the above objectives, the present invention provides a core-pulling assembly with a sliding guide and an inclined top, comprising a mounting base, a sliding guide, an inclined top, and a driving component. The sliding guide is slidably connected to the mounting base in a horizontal core-pulling direction. The sliding guide has a first protrusion at one end near the cavity, and a first step is recessed at the other end near the cavity. One end of the inclined top is pivotally mounted on the mounting base, and the other end penetrates the sliding guide along an inclined core-pulling direction, with a second protrusion at its end that matches the first step. The second protrusion and the first protrusion are joined to form a core. The output end of the driving component is connected to the sliding guide and is capable of driving the sliding guide to reciprocate in a horizontal core-pulling direction.

[0005] Optionally, the slide has a guide hole along the inclined core-pulling direction, the guide hole is slidably engaged with the inclined top, the mounting base is provided with a swing seat, and the inclined top is provided with a swing shaft at one end near the swing seat, the swing shaft is rotatably engaged with the swing seat.

[0006] Optionally, the inclined top has abutting inclined surfaces on the upper and lower sides of the end near the swing shaft.

[0007] Optionally, it also includes an ejector plate and an elastic device. The ejector plate is slidably connected to the mounting base and can slide in the core-pulling direction. The swing seat is disposed on the ejector plate. The elastic device acts on the ejector plate and can provide an elastic force for the inclined ejector to swing upward and reset.

[0008] Optionally, it also includes a plurality of guide posts. The elastic device includes a compression spring. The ejector plate has a first groove at one end near the mounting base. The mounting base has a second groove at one end near the ejector plate. One end of the compression spring is coaxially installed in the first groove and the other end is coaxially installed in the second groove. One end of the plurality of guide posts is fixedly connected to the mounting base and the other end is slidably engaged with the ejector plate.

[0009] Optionally, the ejector plate is embedded with guide sleeves that correspond one-to-one with the plurality of guide posts.

[0010] Optionally, the mounting base is provided with a pair of pressure strips extending in the horizontal core-pulling direction, and the slide is provided with protrusions on both sides corresponding to the pair of pressure strips. The pair of pressure strips act on the pair of protrusions in the vertical direction, and can continuously provide the slide with a pressing force that keeps it abutting against the male mold of the mold.

[0011] Optionally, the mounting base is provided with a pair of guide bars extending in the horizontal core-pulling direction, and the bottom of the slide is provided with a guide groove corresponding to the pair of guide bars, and the guide groove and the guide bars slide in the horizontal core-pulling direction.

[0012] Optionally, the slide has a horizontally arranged limiting post extending along the side near the mounting base.

[0013] Optionally, the driving component includes a hydraulic cylinder disposed on the mounting base, and the sliding position is connected to the piston rod of the hydraulic cylinder at one end near the mounting base.

[0014] The above-mentioned technical solutions of the slide-type core-pulling assembly with inclined ejector provided in this utility model embodiment have at least one of the following technical effects: When the mold is closed, the first protrusion of the slide and the second protrusion of the inclined ejector are joined to form the core of the mold, and a gap is left between the slide and the mold cavity for the molten plastic to flow in. After the product cools and forms, the mold opens, and the driving component drives the slide to slide in the horizontal core-pulling direction to demold the side concavity of the product. During the sliding process of the slide, the end of the slide that is close to the swing connection of the inclined ejector gradually moves closer, thereby driving the inclined ejector to swing in the inclined core-pulling direction to demold the hole of the product. Compared with the prior art, this application uses a single drive to control the slide and the inclined ejector for demolding action, saving the cost of the drive and the installation space, thereby simplifying the mold structure. One end of the inclined ejector passes through the slide, and the other end is swayingly connected to the mounting base to realize the linkage movement with the slide, which is beneficial to improving demolding efficiency. Attached Figure Description

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

[0016] Figure 1 The top side view of the structural schematic diagram of the core-pulling assembly with inclined top provided in the embodiment of this utility model.

[0017] Figure 2 The bottom view of the structural schematic diagram of the core-pulling assembly with inclined top provided in the embodiment of this utility model.

[0018] Figure 3 A cross-sectional schematic diagram of the core-pulling assembly with inclined top provided in an embodiment of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the injection molded part provided in an embodiment of the present utility model.

[0020] The following are the labeling elements in the figure:

[0021] 1—Assembly base; 11—Swing base; 12—Ejector plate

[0022] 13—Elastic device; 14—Guide post; 15—Pressure strip

[0023] 16—Guide bar 2—Rotator 21—First protrusion

[0024] 22—First step 23—Guide hole 24—Protruding strip

[0025] 25—Guide groove 26—Limiting post 3—Sloping top

[0026] 31—Second protrusion; 32—Abutting slope; 33—Swing shaft

[0027] 4—Drive component 5—Product 51—Side recess

[0028] 52—hole. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0030] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0033] In one embodiment of this utility model, such as Figures 1-4As shown, a core-pulling assembly with a sliding position 2 and an inclined top 3 is provided, including a mounting base 1, a sliding position 2, an inclined top 3, and a driving component 4. The sliding position 2 is slidably connected to the mounting base 1 in a horizontal core-pulling direction. The sliding position 2 has a first protrusion 21 protruding at one end near the cavity, and a first step 22 recessed at the other end near the cavity. One end of the inclined top 3 is swayably mounted on the mounting base 1, and the other end penetrates the sliding position 2 along an inclined core-pulling direction, with a second protrusion 31 at its end that matches the first step 22. The second protrusion 31 and the first protrusion 21 are joined to form a core. The output end of the driving component 4 is connected to the sliding position 2 and can drive the sliding position 2 to slide back and forth in a horizontal core-pulling direction. During mold closing, the first protrusion 21 of slide 2 and the second protrusion 31 of the angled ejector 3 join to form the mold core, leaving a gap with the mold cavity for molten plastic to flow in. After the product 5 cools and solidifies, the mold opens, and the drive component 4 drives slide 2 in the horizontal core-pulling direction to demold the side recess 51 of the product 5. During the sliding process of slide 2, the end of slide 2 that is close to the swing connection of angled ejector 3 gradually moves closer, thereby driving angled ejector 3 to swing in the inclined core-pulling direction to demold the hole 52 of the product 5. In this embodiment, a single drive controls slide 2 and angled ejector 3 to perform demolding action, saving drive cost and installation space, and thus simplifying the mold structure. One end of angled ejector 3 passes through slide 2, and the other end is swayingly connected to the mounting base 1 to achieve linkage movement with slide 2, which is beneficial to improving demolding efficiency. Specifically, the slide 2, the angled ejector 3, and the driving component 4 are fixed to the side of the mold via the mounting base 1. When the mold is closed, the first protrusion 21 is adapted to the first step 22 and forms the mold core with the second protrusion 31. During the mold opening process, the slide 2 drives the second protrusion 31 to move away from the cavity and drives the first step 22 to gradually separate from the first protrusion 21. In this embodiment, the demolding stroke of the slide 2 is a, and the demolding stroke of the angled ejector 3 is b, where a:b = 4.2~4.5. The guide hole 23 of the slide 2 is used in conjunction with the swing seat 11 to realize the linkage core pulling of the angled ejector 3.

[0034] In one embodiment of this utility model, such as Figure 3 As shown, the guide hole 23 is provided along the inclined core-pulling direction of the slide position 2. The guide hole 23 is slidably engaged with the inclined top 3. The mounting base 1 is provided with a swing seat 11. The inclined top 3 is provided with a swing shaft 33 at one end near the swing seat 11. The swing shaft 33 is rotatably engaged with the swing seat 11. Specifically, the swing seat 11 is provided with a cylindrical notch with openings at both ends. The swing shaft 33 is a circular column formed integrally at the end of the inclined top 3. The circular column is rotatably engaged with the cylindrical notch.

[0035] In one embodiment of this utility model, such as Figure 3As shown, the inclined top 3 has abutting inclined surfaces 32 on its upper and lower sides near the end of the swing shaft 33. Specifically, using a pair of inclined surfaces to limit the range of vertical swing of the inclined top 3 helps to improve machining accuracy.

[0036] In one embodiment of this utility model, such as Figures 1-2 As shown, it also includes an ejector plate 12 and an elastic device 13. The ejector plate 12 is slidably connected to the assembly base 1 and can slide in the core-pulling direction. The swing base 11 is disposed on the ejector plate. The elastic device 13 acts on the ejector plate 12 and can provide an elastic force for the inclined ejector 3 to swing upward and reset. On the one hand, it provides an elastic force for the inclined ejector 3 to reset when the mold is closed. On the other hand, it ensures that there is a sequence between the two core-pulling operations. When the slide 2 moves to the end away from the cavity for demolding, under the elastic force of the spring, the second protrusion 31 of the inclined ejector 3 keeps in contact with the end wall of the side recess 51 of the product 5 and the hole 52 of the side wall. As the slide 2 slides, the included angle between the inclined ejector 3 and the ejector plate 12 gradually decreases to achieve the effect of the inclined ejector 3 swinging downward. When swinging downward, the elastic device 13 is compressed and forms elastic potential energy for reset.

[0037] In one embodiment of this utility model, such as Figures 1-2 As shown, it also includes several guide posts 14. The elastic device 13 includes a compression spring. The ejector plate 12 has a first groove at one end near the mounting base 1, and the mounting base 1 has a second groove at one end near the ejector plate 12. One end of the compression spring is coaxially installed in the first groove, and the other end is coaxially installed in the second groove. One end of each guide post 14 is fixedly connected to the mounting base 1, and the other end is slidably engaged with the ejector plate. The structure is simple and easy to manufacture.

[0038] In one embodiment of this utility model, such as Figures 1-2 As shown, the ejector plate is embedded with guide sleeves that correspond one-to-one with the guide posts 14. This helps to improve the sliding stability of the ejector plate 12.

[0039] In one embodiment of this utility model, such as Figures 1-2 As shown, the mounting base 1 has a pair of pressure strips 15 extending in the horizontal core-pulling direction. The slide 2 has protrusions 24 on both sides corresponding to the pair of pressure strips 15. The pair of pressure strips 15 act on the pair of protrusions 24 in the vertical direction, continuously providing the slide 2 with a pressing force to maintain contact with the male mold of the die. Specifically, the protrusions 24 of the slide 2 are mounted on the lower mold side of the die via the pair of pressure strips 15. The top surface of the lower mold is embedded with a wear-resistant plate that slides and rubs against the protrusions 24, which helps to improve the service life of the die.

[0040] In one embodiment of this utility model, such as Figures 1-2 As shown, the mounting base 1 has a pair of guide bars 16 extending in the horizontal core-pulling direction, and the bottom of the slide 2 has a guide groove 25 corresponding to the pair of guide bars 16. The guide groove 25 and the guide bars 16 slide in engagement in the horizontal core-pulling direction. Specifically, the pair of guide bars 16 are fixedly connected to the lower mold of the mold, and the sliding engagement between the pair of guide bars 16 and the guide groove 25 helps to improve the stability of the slide 2.

[0041] In one embodiment of this utility model, such as Figures 1-2 As shown, the slide 2 has a horizontally arranged limiting post 26 extending along the side near the mounting base 1. Specifically, the limiting post 26 is a multi-faceted columnar body, which is fixedly connected to the draft surface of the slide 2 by screws, and is used to limit the maximum stroke of the slide 2 sliding outward for core pulling.

[0042] In one embodiment of this utility model, such as Figures 1-2 As shown, the driving component 4 includes a hydraulic cylinder mounted on the mounting base 1, and the sliding component 2 is connected to the piston rod of the hydraulic cylinder at one end near the mounting base 1. The structure is simple and easy to install.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 core-pulling assembly with inclined stripper for a parting, characterized in that: The device includes a mounting base, a sliding position, an inclined ejector, and a driving component. The sliding position is slidably connected to the mounting base in a horizontal core-pulling direction. The sliding position has a first protrusion at one end near the cavity, and a first step is recessed at the other end near the cavity. One end of the inclined ejector is swayably mounted on the mounting base, and the other end passes through the sliding position along an inclined core-pulling direction, with a second protrusion at its end that matches the first step. The second protrusion and the first protrusion are joined to form a core. The output end of the driving component is connected to the sliding position and can drive the sliding position to reciprocate in a horizontal core-pulling direction.

2. The lift strip angled ejector core assembly of claim 1, wherein: The slide has a guide hole along the inclined core-pulling direction. The guide hole slides with the inclined top. The mounting base has a swing seat. The inclined top has a swing shaft at one end near the swing seat. The swing shaft rotates with the swing seat.

3. The lift strip angled ejector core assembly of claim 2, wherein: The inclined top has abutting inclined surfaces on its upper and lower sides at one end near the swing shaft.

4. The lift strip angled ejector core assembly of claim 2, wherein: It also includes an ejector plate and an elastic device. The ejector plate is slidably connected to the mounting base and can slide in the core-pulling direction. The swing seat is disposed on the ejector plate. The elastic device acts on the ejector plate and can provide an elastic force for the inclined ejector to swing upward and reset.

5. The lift strip angled ejector core assembly of claim 4, wherein: It also includes several guide posts, the elastic device includes a compression spring, the ejector plate has a first groove at one end near the mounting base, the mounting base has a second groove at one end near the ejector plate, one end of the compression spring is coaxially installed in the first groove and the other end is coaxially installed in the second groove; one end of the several guide posts is fixedly connected to the mounting base and the other end is slidably engaged with the ejector plate.

6. The lift strip angled ejector core assembly of claim 5, wherein: The ejector plate is embedded with guide sleeves that correspond one-to-one with the guide posts.

7. The lift strip angled ejector core assembly of claim 1 wherein: The mounting base is provided with a pair of pressure strips extending in the horizontal core-pulling direction. The slide is provided with protrusions on both sides corresponding to the pair of pressure strips. The pair of pressure strips act on the pair of protrusions in the vertical direction, and can continuously provide the slide with a pressing force that keeps it abutting against the mold.

8. The lift and tilt core assembly of claim 1, wherein: The mounting base is provided with a pair of guide bars extending in the horizontal core-pulling direction, and the bottom of the slide is provided with a guide groove corresponding to the pair of guide bars. The guide groove and the guide bars slide in the horizontal core-pulling direction.

9. The lift and tilt core assembly of claim 1, wherein: The slide has a horizontally arranged limiting post extending from the side near the mounting base.

10. The lift and tilt core assembly of claim 1, wherein: The driving component includes a hydraulic cylinder mounted on the mounting base, and the sliding position is connected to the piston rod of the hydraulic cylinder at one end near the mounting base.

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