A bucket member floating knockout mold

Abstract

The application discloses a bucket-shaped component floating demolding mold, which comprises a fixed mold, a fixed block arranged on the fixed mold and a plurality of sliding blocks distributed in the circumferential direction of the fixed block, an ejection channel matched with the sliding blocks is arranged on the fixed mold, a floating plate is arranged on the fixed mold, the floating plate is matched with the fixed mold, the fixed block and the sliding blocks to form a bucket-shaped component, the floating plate is suitable for covering all the ejection channels and supporting the bottom surface of the bucket-shaped component and the bottom of all the sliding blocks, and the bucket-shaped component and the sliding blocks are suitable for being synchronously lifted by the floating plate. The application has the characteristics of compact structure, can meet the demolding requirement of products, simplify the ejection structure, and solve the cost of mold manufacturing and product production.

Description

Technical Field

[0001] This application relates to the field of mold equipment technology, specifically to a floating demolding mold for barrel-shaped components. Background Technology

[0002] Injection molds are steel tools used to inject, cool, and shape molten plastic into the final part. The quality of the mold directly affects: the product's appearance and dimensional accuracy; the production cycle and unit cost; the amount of post-processing work (whether grinding, painting, or machining is required); and the stability of production capacity and the defect rate.

[0003] However, the existing mold structure has the following drawbacks: for barrel-shaped components with high product height, the clamping force inside the mold is huge. If the ejection is done according to the traditional structure, the mold thickness will exceed the limit, increasing the cost of mold manufacturing and product production. Utility Model Content

[0004] One object of this application is to provide a compact floating demolding mold for barrel-shaped components.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a floating demolding mold for a barrel-shaped component, comprising a fixed mold, a fixed block disposed on the fixed mold, and a plurality of sliders distributed circumferentially along the fixed block. The fixed mold has an ejection channel that cooperates with the sliders. A floating plate is arranged on the fixed mold. The floating plate cooperates with the fixed mold, the fixed block, and the sliders to form a barrel-shaped component. The floating plate is adapted to cover all the ejection channels and support the bottom surface of the barrel-shaped component and the bottom of all the sliders. The barrel-shaped component and the sliders are adapted to be lifted synchronously by the floating plate.

[0006] In some embodiments, the floating plate is provided with a stepped structure, and the bottom of the slider, from the side near the barrel-shaped member to the side away from the barrel-shaped member, cooperates with the height direction of the stepped structure, and the stepped structure is adapted to restrict the slider from approaching the fixed block.

[0007] In some embodiments, the floating plate and the slider are respectively provided with a guide block and a guide groove, and the guide block and the guide groove slide in a manner that allows the slider to disengage from the barrel-shaped component.

[0008] In some embodiments, the guide block is adapted not to disengage from the guide groove until the slider is completely disengaged from the barrel-shaped member.

[0009] In some embodiments, when adjacent sliders are combined with each other, an installation notch is formed on the side of the slider, a portion of the floating plate protrudes from the bottom of the slider, a guide platform is formed at the installation notch, the side of the slider is located on the guide platform, and the guide block and the guide groove are respectively disposed on the side of the slider and the guide platform.

[0010] In some embodiments, the guide block is disposed on the floating plate, the guide groove is disposed on the slider, and the opening of the guide groove faces the fixed block.

[0011] In some embodiments, the middle cross-section of the slider gradually tapers towards the lower cross-section, and the guide groove is located near the bottom of the slider.

[0012] In some embodiments, the barrel-shaped component is an open part, the diameter of the opening of the barrel-shaped component is smaller than the diameter of the other end, the opening of the barrel-shaped component faces downward, and the inner edge of the floating plate is arranged to match the inner edge of the opening of the barrel-shaped component; the floating plate is connected to the ejector screw of the injection molding machine at the ejection channel.

[0013] In some embodiments, the fixed mold is provided with a plurality of inclined guide posts in conjunction with the slider. When the slider is lifted by the floating plate, the inclined guide posts are adapted to make the slider move away from the barrel-shaped component synchronously.

[0014] In some embodiments, the slider has a connecting groove on its side and a synchronizing rod is provided between adjacent sliders. The synchronizing rod is adapted to be fixedly connected to one connecting groove and to be slidably connected to another connecting groove so that adjacent sliders are lifted synchronously.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: The floating demolding mold of this application has a floating plate set below the slider. By ejecting the floating plate, the slider can be ejected synchronously, thereby simplifying the ejection structure and improving the overall compactness of the mold. At the same time, in order to ensure that the product can be ejected synchronously with the slider, the floating plate directly serves as the forming bottom surface of the barrel-shaped component. After the floating plate cooperates in forming the barrel-shaped component, it can directly serve as the ejection mechanism to eject the slider and the barrel-shaped component, so that the barrel-shaped component is separated from the fixed block. The slider can be separated by structures such as inclined guide pillars. Since the contact area between the floating plate and the barrel-shaped component is small, the sticking between the floating plate and the barrel-shaped component is less, the separation of the barrel-shaped component is better, it is not easy to break or damage, and it can be more easily removed from the mold. Attached Figure Description

[0016] Figure 1 This is an overall structural view according to a preferred embodiment of the present application.

[0017] Figure 2This is a schematic diagram of the mold state before mold opening according to a preferred embodiment of this application.

[0018] Figure 3 This is a schematic diagram of the mold state after mold opening according to a preferred embodiment of this application.

[0019] Figure 4 This is a bottom view of a floating plate supporting a slider and a barrel-shaped component according to a preferred embodiment of this application.

[0020] Figure 5 This is an enlarged view of the guide engagement connection between the slider and the floating plate according to a preferred embodiment of this application.

[0021] In the diagram: 1. Fixed mold; 11. Ejection channel; 2. Fixed block; 3. Slider; 31. Guide groove; 32. Mounting notch; 33. Connecting groove; 4. Floating plate; 41. Stepped structure; 42. Guide block; 43. Guide platform; 5. Barrel-shaped component; 6. Ejection screw; 7. Angled guide post; 8. Synchronizing rod. Detailed Implementation

[0022] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. They should not be construed as limiting the specific protection scope of this application.

[0024] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0025] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0026] The following description, in conjunction with the accompanying drawings, further illustrates this application: like Figures 1 to 5 As shown, this application provides a floating demolding mold for a barrel-shaped component, including a fixed mold 1, a fixed block 2 disposed on the fixed mold 1, and a plurality of sliders 3 distributed circumferentially along the fixed block 2. The fixed mold 1 has an ejection channel 11 that cooperates with the sliders 3. A detachable floating plate 4 is arranged on the fixed mold 1. The floating plate 4 cooperates with the fixed mold 1, the fixed block 2, and the sliders 3 to form a barrel-shaped component 5. The fixed mold 1 and the fixed block 2 are mainly used to form the inner wall of the barrel-shaped component 5, the sliders 3 are mainly used to form the outer wall of the barrel-shaped component 5, and the floating plate 4 is mainly used to form the bottom edge of the barrel-shaped component 5. The floating plate 4 is suitable for covering the entire ejection channel 11 and supporting the bottom surface of the barrel-shaped component 5 and the bottom of all the sliders 3. The barrel-shaped component 5 and the sliders 3 are suitable for being lifted synchronously by the floating plate 4.

[0027] like Figure 2 and 4 In the illustrated embodiment, to ensure that the barrel-shaped component 5 can be lifted away from the fixed block 2 by the floating plate 4, the barrel-shaped component 5 is designed as an open part. The diameter of the opening of the barrel-shaped component 5 is smaller than the diameter of the other end. The opening of the barrel-shaped component 5 faces downward. Since the side wall of the barrel-shaped component 5 is inclined, it will naturally detach from the fixed block 2 during the lifting process. The inner edge of the floating plate 4 is set to match the inner edge of the opening of the barrel-shaped component 5, so that the floating plate 4 and the barrel-shaped component 5 can form a sufficient contact surface, thereby more stably supporting and lifting the barrel-shaped component 5. At the same time, the floating plate 4 covers the entire bottom surface of the opening of the barrel-shaped component 5. The floating plate 4, together with the slider 3 and the fixed mold 1, directly forms the bottom surface of the opening of the barrel-shaped component 5, which can improve the flatness of the bottom surface of the opening of the barrel-shaped component 5 and reduce the generation of parting lines.

[0028] During molding, the barrel-shaped component 5 experiences a huge clamping force between itself and the fixed block 2 due to the cooling and shrinkage of the plastic material. If ejection is performed using a conventional structure, the mold thickness would be too large and exceed the limit in order to ensure ejection strength. Therefore, the main function of the floating plate 4 is to support the barrel-shaped component 5 as a whole and push the barrel-shaped component 5 stably away from the fixed block 2, thereby releasing the clamping force between the barrel-shaped component 5 and the fixed block 2 and achieving fast and stable demolding.

[0029] like Figure 2 and 3 In the embodiment shown, the ejector screw 6 of the injection molding machine extends into the ejector channel 11. The ejector screw 6 of the injection molding machine is adapted to push the floating plate 4 out. The top end of the ejector screw 6 is connected to the bottom end of the floating plate 4 (the connection can be made by means of threaded fasteners, etc.), which can ensure the stability of the fit between the ejector screw 6 and the floating plate 4, thereby effectively improving the stability and support of the floating plate 4 during operation.

[0030] In some embodiments, a stepped structure 41 is provided on the floating plate 4. The bottom of the slider 3, from the side near the barrel-shaped member 5 to the side away from the barrel-shaped member 5, cooperates with the step structure 41 in the high and low direction. The stepped structure 41 is suitable for restricting the slider 3 from approaching the fixed block 2. It can be understood that since the bottom surface of the opening of the barrel-shaped member 5 is completely formed by the floating plate 4, the slider 3 and the floating plate 4 can form the outer edge of the opening of the barrel-shaped member 5. Considering that the slider 3 needs to move away from the barrel-shaped member 5 along the floating plate 4 to achieve mold opening, the slider 3 needs to ensure that it can slide smoothly away from the barrel-shaped member 5, while being restricted when moving towards the barrel-shaped member 5, so as to ensure the forming accuracy of the outer edge of the opening of the barrel-shaped member 5. Therefore, by designing the stepped structure 41, the above requirements can be achieved, and the stability and accuracy of the slider 3 when closing the mold and the smoothness of the slider 3 when opening the mold can be improved.

[0031] like Figure 2 and 3 In the embodiment shown, the stepped structure 41 has two steps. The bottom of the slider 3 is located on the upper step, closer to the barrel-shaped component 5, and the bottom of the slider 3 is located on the lower step, further away from the barrel-shaped component 5.

[0032] Furthermore, each step structure 41 is designed as a planar shape, and the side closer to the barrel-shaped component 5 is not lower than the side farther away from the barrel-shaped component 5, to ensure that it will not cause structural interference to the mold opening of the slider 3.

[0033] In some embodiments, the floating plate 4 and the slider 3 are respectively provided with a guide block 42 and a guide groove 31. The guide block 42 and the guide groove 31 slide together in the direction in which the slider 3 separates from the barrel-shaped component 5. The function of the guide block 42 and the guide groove 31 is to guide the floating plate 4 and the slider 3 to make a more stable connection during the final stroke of mold closing and the initial stroke of demolding. At the same time, it can also enable the floating plate 4 to more stably support the slider 3 in the initial stage of ejection, thereby improving the stability of the connection between the two.

[0034] In some embodiments, before the slider 3 completely disengages from the barrel-shaped member 5, the guide block 42 is adapted not to disengage from the guide groove 31, that is, the initial stroke of the slider 3 during demolding can maintain the engagement connection with the floating plate 4, thereby increasing the synchronicity of the movement between the sliders 3.

[0035] like Figure 5In the embodiment shown, when adjacent sliders 3 are engaged, an installation notch 32 is formed on the side of the slider 3, and a portion of the floating plate 4 protrudes from the bottom of the slider 3. The installation notch 32 is used to form a guide platform 43, which does not occupy extra space and improves the compactness of the structure. The side of the slider 3 is located on the guide platform 43. The guide block 42 and the guide groove 31 are respectively set on the side of the slider 3 and the guide platform 43. At the same time, the guide platform 43 is exposed to the outside of the slider 3, which makes it easier to observe the engagement state of the guide block 42, thereby facilitating mold maintenance.

[0036] like Figure 5 In the embodiment shown, the guide block 42 is disposed on the floating plate 4, and the guide groove 31 is disposed on the slider 3. This can reduce the weight of the slider 3 and reduce the pressure on structures other than the floating plate 4. The opening of the guide groove 31 faces the fixed block 2. The guide block 42 can naturally detach from the guide groove 31 after moving a certain distance, thereby facilitating the installation and separation between the slider 3 and the floating plate 4 and making mold maintenance easier.

[0037] like Figure 2 , 3 In the embodiment shown in Figure 5, the middle cross-section of the slider 3 gradually tapers to the lower cross-section to reduce the weight, thickness and volume of the slider 3, thereby achieving a lightweight design. The guide groove 31 is close to the bottom of the slider 3, so that the guide block 42 and the guide groove 31 are designed mainly to improve the stability of the bottom of the slider 3, thereby improving the forming accuracy of the opening of the barrel component 5.

[0038] like Figures 1 to 5 In the embodiment shown, the fixed mold 1 is provided with multiple inclined guide posts 7 to cooperate with the slider 3. When the slider 3 is lifted by the floating plate 4, the inclined guide posts 7 are adapted to make the slider 3 move away from the barrel-shaped component 5 synchronously. The inclined guide posts 7 can make the slider 3 detach from the barrel-shaped component 5 to realize mold opening during the process of the floating plate 4 being pushed out. Combined with the demolding between the barrel-shaped component 5 and the fixed block 2 achieved by the floating plate 4 lifting the barrel-shaped component 5, it can realize the rapid and synchronous demolding of the inner and outer sides of the barrel-shaped component 5 during the mold opening process, without affecting the floating demolding of the slider 3.

[0039] like Figures 1 to 5 In the embodiment shown, there are two inclined guide posts 7, which are respectively arranged on the left and right sides of the slider 3 to improve the stability and smoothness of the slider 3 sliding.

[0040] like Figure 1 In the embodiment shown, a connecting groove 33 is provided on the side of the slider 3, and a synchronizing rod 8 is provided between adjacent sliders 3. The synchronizing rod 8 is adapted to be fixedly connected to one connecting groove 33 and to be slidably connected to another connecting groove 33 so that adjacent sliders 3 are lifted synchronously.

[0041] Normally, the sliders 3 on opposite sides are fixed to the synchronizing rods 8, which drive and propel the sliders 3 on their adjacent sides to rise synchronously. This can effectively release the hard connection between the sliders 3, thereby achieving a stable floating lifting effect.

[0042] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are only the principles of this application. Various changes and modifications can be made to this application without departing from the spirit and scope of this application. All such changes and modifications fall within the scope of this application as claimed. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A tub member float-and-draw mold characterized by: The device includes a fixed mold, a fixed block disposed on the fixed mold, and a plurality of sliders distributed circumferentially along the fixed block. The fixed mold has an ejection channel that cooperates with the sliders. A floating plate is arranged on the fixed mold. The floating plate cooperates with the fixed mold, the fixed block, and the sliders to form a barrel-shaped component. The floating plate is adapted to cover all the ejection channels and support the bottom surface of the barrel-shaped component and the bottom of all the sliders. The barrel-shaped component and the sliders are adapted to be lifted synchronously by the floating plate.

2. A tub member floating draw mould according to claim 1, characterised in that: The floating plate is provided with a stepped structure, and the bottom of the slider, from the side closer to the barrel-shaped component to the side farther away from the barrel-shaped component, matches the height direction of the stepped structure. The stepped structure is adapted to restrict the slider from approaching the fixed block.

3. A tub member floating knockout mold according to claim 1, wherein: The floating plate and the slider are respectively provided with a guide block and a guide groove, and the guide block and the guide groove slide in the direction in which the slider separates from the barrel-shaped component.

4. The floating demolding mold for a barrel-shaped component as described in claim 3, characterized in that: The guide block is adapted to remain in the guide groove until the slider is completely disengaged from the barrel-shaped member.

5. A tub member floating knockout mold as set forth in claim 3 wherein: When adjacent sliders are combined, an installation notch is formed on the side of the slider, and part of the floating plate protrudes from the bottom of the slider. A guide platform is formed at the installation notch, and the side of the slider is located on the guide platform. The guide block and the guide groove are respectively disposed on the side of the slider and the guide platform.

6. A tub member floating knockout mould according to any one of claims 3 to 5, characterised in that: The guide block is disposed on the floating plate, the guide groove is disposed on the slider, and the opening of the guide groove faces the fixed block.

7. A tub member floating knockout mold according to claim 6, wherein: The slider's cross-section gradually tapers from its middle section to its lower section, and the guide groove is located near the bottom of the slider.

8. A tub member floating knockout mold as set forth in claim 1 wherein: The barrel-shaped component is an open part, the diameter of the opening of the barrel-shaped component is smaller than the diameter of the other end, the opening of the barrel-shaped component faces downward, and the inner edge of the floating plate is set to match the inner edge of the opening of the barrel-shaped component; the floating plate is connected to the ejector screw of the injection molding machine at the ejection channel.

9. A tub member floating knockout mold as set forth in claim 1 wherein: The fixed mold is provided with multiple inclined guide pillars in conjunction with the slider. When the slider is lifted by the floating plate, the inclined guide pillars are adapted to make the slider move away from the barrel-shaped component synchronously.

10. A tub member floating knockout mold as set forth in claim 1 wherein: The slider has a connecting groove on its side, and a synchronizing rod is provided between adjacent sliders. The synchronizing rod is adapted to be fixedly connected to one connecting groove and to be slidably connected to another connecting groove so that adjacent sliders are lifted synchronously.

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