Demoulding mechanism for a car armrest cup holder

Abstract

The application discloses a demolding mechanism of an automobile handrail cup holder, which comprises a lower mold, a core part, a supporting assembly and a driving device, the core part is slidably arranged in the lower mold and is used for forming a bone site dense area of a product, the supporting assembly is slidably arranged in the core part and is matched with the bone site dense area, and the driving device is arranged in the lower mold and is matched with the core part and the supporting assembly. The application has the beneficial effects that: by arranging the supporting assembly and the driving device, the supporting assembly keeps static and supports the bone site dense area at the beginning of demolding, thereby effectively protecting the demolding of the core part, and then the two synchronously move and are separated from the product for demolding, so that the problem of difficult demolding of the bone site dense area is effectively solved, and the demolding quality and the production efficiency of the product are greatly improved.

Description

Technical Field

[0001] This application relates to the field of mold technology, and in particular to a demolding mechanism for a cup holder in an automotive armrest. Background Technology

[0002] Injection molds are tools used to produce plastic products, giving them a complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it involves injecting molten plastic into a mold cavity under high pressure using an injection molding machine, and then cooling and solidifying it to obtain the molded product.

[0003] like Figure 1 The diagram shows the product structure of a car armrest cup holder. In a localized area on its outer side, there are numerous bosses and deep ribs, resulting in significant adhesion between the core block and the product in this area. This can easily lead to deformation or damage during demolding, affecting product quality. Therefore, a demolding mechanism for a car armrest cup holder is proposed to solve the aforementioned technical problems. Utility Model Content

[0004] One of the objectives of this application is to provide a demolding mechanism for a cup holder in an automotive armrest.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a demolding mechanism for an automotive armrest cup holder, comprising a lower mold, a core component, a support assembly, and a driving device. The core component is slidably disposed within the lower mold and used to form the densely packed rib area of ​​the product. The support assembly is slidably disposed within the core component and cooperates with the densely packed rib area. The driving device is disposed within the lower mold and cooperates with the core component and the support assembly. During demolding, the driving device is adapted to drive the core component and the support assembly to demold sequentially.

[0006] Preferably, the core component is slidably disposed within the lower mold in the vertical direction; the driving device includes a driving block and a transmission structure, the driving block is horizontally slidably disposed within the lower mold and connected to the input end of the transmission structure, and the output end of the transmission structure cooperates with the core component and the support assembly; during demolding, the driving block is adapted to slide horizontally and drive the core component and the support assembly to perform sequential demolding actions in the vertical direction through the transmission structure.

[0007] Preferably, the transmission structure includes a transmission rod inclinedly disposed and installed in the drive block and a transmission groove inclinedly disposed in the core component, wherein the top end of the transmission rod is provided with a horizontal portion; during demolding, the core component is adapted to move downward and disengage from the dense bone area under the inclined sliding cooperation of the transmission rod and the transmission groove, at which time the support assembly is adapted to cooperate with the horizontal portion to maintain a stationary state; when the support assembly disengages from the horizontal portion, the core component is adapted to drive the support assembly to move downward synchronously.

[0008] Preferably, the driving device further includes an inclined guide post installed on the upper mold, and the driving block is provided with an inclined guide groove; during demolding, the driving block is adapted to move horizontally under the inclined sliding cooperation of the inclined guide post and the inclined guide groove.

[0009] Preferably, the cross-sections of the inclined guide post and the inclined guide groove are both rectangular, and a locking block is installed inside the lower mold. During mold closing, the bottom end of the inclined guide post abuts against the lower mold, and the end of the transmission rod abuts against the locking block, thereby achieving the limiting and locking of the core part.

[0010] Preferably, the support assembly includes a support plate and support columns disposed at the four corners of the top of the support plate; when the support assembly is stationary, the top of the support column abuts against the bone-dense area, and the bottom of the support plate cooperates with the horizontal part.

[0011] Preferably, the support plate includes an upper plate and a lower plate that are distributed vertically and can be detachably installed. The support column passes through the upper plate and the column head at the bottom abuts against the lower plate to realize the installation of the support column.

[0012] Preferably, the core component includes a core block and a mounting block that are distributed vertically and can be detachably installed. The core block and the mounting block cooperate with each other to form a mounting groove for sliding the support component.

[0013] Preferably, the injection mold for the car armrest cup holder further includes an ejector mechanism, which includes a top plate and multiple ejector rods. The ejector rods are used to form multiple square holes around the periphery of the product and are suitable for ejecting the product.

[0014] Compared with the prior art, the beneficial effects of this application are as follows: This invention, by incorporating a support component and a driving device, ensures that the support component remains stationary during the initial demolding process, supporting the densely packed rib area and thus providing effective protection for the demolding of the core part. Subsequently, both components move synchronously to separate from the product and demold, effectively solving the problem of difficult demolding in densely packed rib areas and greatly improving the demolding quality and production efficiency of the product. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an existing car armrest cup holder product.

[0016] Figure 2 This is a schematic diagram of the overall structure of the mold body of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the driving device and limiting structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the core component's state during mold closing according to this utility model.

[0019] Figure 5 This is a schematic diagram illustrating the principle of the first mold-opening process of this utility model.

[0020] Figure 6 This is a schematic diagram illustrating the principle of the second mold-opening process of this utility model.

[0021] Figure 7 This is a structural diagram of the core component, support assembly, drive device, and transmission structure of this utility model when disassembled.

[0022] Figure 8 This is a schematic diagram of the specific structure of the support component of this utility model.

[0023] Figure 9 This is a schematic diagram of the mold closing and locking state of this utility model.

[0024] Figure 10 This is a schematic diagram of the ejector mechanism of this utility model when it is used in conjunction with the product.

[0025] In the diagram: 1. Product; 101. Rib-dense area; 1011. Boss column; 1012. Rib; 102. Square hole; 2. Mold body; 201. Upper mold; 202. Lower mold; 3. Ejector mechanism; 301. Top plate; 302. Ejector rod; 4. Drive device; 401. Drive block; 402. Transmission structure; 4021. Transmission rod; 4022. Transmission groove; 403. Angled guide post; 5. Core component; 501. Core block; 502. Mounting block; 6. Support assembly; 601. Support plate; 6011. Upper plate; 6012. Lower plate; 602. Support column; 7. Horizontal part; 8. Locking block. Detailed Implementation

[0026] 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.

[0027] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, 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, and should not be construed as limiting the specific protection scope of this application.

[0028] 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.

[0029] Further description of the existing product 1: In an area on the exterior of the injection-molded (car armrest cup holder) product 1, there are numerous boss pillars 1011 and ribs 1012. It is also likely to have undercuts, slots, and other structures. Due to the concentration of these structures, this area is referred to as the dense rib area 101. Ribs are key features in plastic product design used to connect components and enhance structural strength. Therefore, during demolding, if a conventional direct demolding method is used, the dense rib area 101 of product 1 will be subjected to significant stress due to the strong adhesion between it and the corresponding core part 5, leading to deformation or even damage to product 1 and affecting its quality.

[0030] Therefore, the inventors of this application have developed an injection mold for a car armrest cup holder, one embodiment of which is, for example... Figures 1 to 10 As shown, the mold includes a mold body 2 (i.e., upper mold 201 and lower mold 202), a core component 5, a support assembly 6, and a drive device 4. The core component 5 is slidably disposed in the lower mold 202 and is used to form the dense bone area 101 of the product 1. The support assembly 6 is slidably disposed in the core component 5 and cooperates with the dense bone area 101. The drive device 4 is disposed in the lower mold 202 and cooperates with the core component 5 and the support assembly 6.

[0031] Understandably, the demolding of the dense rib area 101 involves two processes. In the first process, the drive device 4 first moves the core 5 and the product 1 to demold, while the support assembly 6 remains stationary under the action of the drive device 4. This means the support assembly 6 supports and limits the demolded dense rib area 101, significantly reducing deformation. In the second process, the drive device 4 continues to operate, driving the core 5 to move the support assembly 6 synchronously, thereby demolding the support assembly 6 and the product 1, ensuring a smooth demolding process.

[0032] It can be seen that by adopting the above-mentioned step-by-step demolding design, that is, when demolding is initially performed, the support component 6 remains stationary to support the dense bone area 101, thereby providing effective protection for the demolding of the core part 5. Subsequently, the two move synchronously to separate and demold from the product 1, which effectively solves the problem of difficult demolding of the dense bone area 101 and greatly improves the demolding quality and production efficiency of the product 1.

[0033] This application does not specifically limit the structure of the drive device 4, but the following specific embodiment is provided for reference: like Figure 4 As shown, the driving device 4 includes a driving block 401 and a transmission structure 402. The driving block 401 is horizontally slidably disposed in the lower mold 202 and connected to the input end of the transmission structure 402. The output end of the transmission structure 402 cooperates with the core part 5 and the support assembly 6.

[0034] Understandably, this structure is mainly suitable for the core 5 to slide vertically within the lower mold 202, such as sliding vertically or tilting relative to the vertical direction. During demolding, the drive block 401 can slide horizontally and cooperate with the transmission structure 402 to drive the core 5 and the support assembly 6 to perform sequential demolding actions in the vertical direction. In other words, the driving force of horizontal sliding is converted into the driving force for demolding the core 5 in the vertical direction. This can also greatly reduce the space occupied in the vertical direction inside the lower mold 202, making the space arrangement of the mold more reasonable and uniform.

[0035] As a further description of the above embodiments: such as Figure 7 As shown, the transmission structure 402 includes a transmission rod 4021 and a transmission groove 4022. The transmission rod 4021 is inclined and installed on the side of the drive block 401, while the transmission groove 4022 is inclined in the core part 5. A horizontal part 7 (as the name suggests, a part that is horizontally arranged) is provided at the top of the transmission rod 4021.

[0036] Understandably, during demolding, the drive block 401 drives the transmission rod 4021 to move horizontally synchronously. The core 5, under the inclined sliding cooperation of the transmission rod 4021 and the transmission groove 4022, moves downwards and demolds from the dense rib area 101. At this time, the support assembly 6 cooperates with the horizontal part 7, meaning the support assembly 6 is still stationary in the vertical direction due to the horizontal part 7, thus providing limiting support for the dense rib area 101. Then, the support assembly 6 disengages from the horizontal part 7, releasing the limiting state. Naturally, at this point, the core 5 and the support assembly 6 also slide relative to each other to their limit distance. As the core 5 continues to move downwards, it drives the support assembly 6 to move downwards synchronously for demolding.

[0037] Further optimization, such as Figures 4 to 6 As shown, the driving device 4 also includes an inclined guide post 403 installed on the upper mold 201, and an inclined guide groove is provided inside the driving block 401. It can be understood that when the mold body 2 opens, the upper mold 201 separates from the lower mold 202. At this time, the inclined guide post 403 will engage with the inclined guide groove to achieve the horizontal movement of the driving block 401, thereby realizing the subsequent demolding action. Of course, the driving block 401 can also be directly driven by a hydraulic cylinder, which can be configured according to the actual situation.

[0038] To facilitate understanding of the specific actions between the above-mentioned structures, their working principles are described below: like Figure 3 and Figure 4 As shown, this is the initial state of the drive device 4 and support assembly 6 when the mold body 2 is closed. At this time, the bottom end of the support assembly 6 abuts against the horizontal part 7 on the transmission rod 4021. During mold opening, as... Figure 5 As shown, the first process is as follows: the upper mold 201 moves upward to open the mold, and the driving block 401 moves horizontally to the right under the action of the inclined guide post 403 and the inclined guide groove. The core part 5 moves downward at an angle under the action of the transmission rod 4021 and the transmission groove 4022 and disengages from the rib-dense area 101. At this time, the support assembly 6 remains stationary in the vertical direction due to the blocking and limiting effect of the bottom horizontal part 7, thus supporting the rib-dense area 101 to ensure the smooth demolding of the core part 5. The second process is as follows: Figure 6 As shown, as the drive block 401 continues to move to the right, the support component 6 will be misaligned and separated from the horizontal part 7, thus losing its limiting function. The core part 5 and the support component 6 will also move to their limit distance, that is, they are in a state of mutual resistance. Therefore, the core part 5 will drive the support component 6 to move down synchronously, so that the support component 6 and the bone density area 101 can be demolded, thereby realizing the entire demolding process.

[0039] Therefore, it can be seen that in the above demolding process, the demolding transmission chain is mainly: inclined guide post 403 - drive block 401 - transmission rod 4021 - core part 5 - support assembly 6. No additional drive source (such as hydraulic cylinder or pneumatic cylinder) is set in the entire demolding process. The demolding driving force is converted and transmitted by the mold body 2 itself. This not only simplifies the mold structure and reduces the mold manufacturing cost, but also improves the reliability and stability of the mold.

[0040] Further optimization, such as Figure 7 and Figure 9 As shown, both the inclined guide post 403 and the inclined guide groove have rectangular cross-sections, and a locking block 8 is installed inside the lower mold 202. It can be understood that during mold closing, the bottom end of the inclined guide post 403 abuts against the lower mold 202, and the end of the transmission rod 4021 abuts against the locking block 8, thereby achieving the limiting and locking of the core part 5.

[0041] As a further description of the above embodiment: According to the transmission chain relationship, to achieve mold closing and locking of the core part 5, the transmission rod 4021 needs to be locked. To lock the transmission rod 4021 (or drive block 401), the inclined guide post 403 needs to be locked. In other words, during mold closing, locking the two transmission components, transmission rod 4021 and inclined guide post 403, is sufficient to achieve system stability. Therefore, by using the square shovel base limit at the bottom of the inclined guide post 403, the locking block 8 limit, and the clamping force of the mold body 2 to achieve locking at both ends, the problems of unstable locking on one side, poor force distribution, and flash can be effectively avoided, further improving the quality of product 1.

[0042] It should be noted that the above structure is mainly applicable when the bone-dense area 101 is located at the bottom end of product 1 and close to the periphery. If the bone-dense area 101 is located in the middle of the bottom end of product 1 and far from the periphery, such as... Figure 4 As shown, the transmission rod 4021 needs to be set very long laterally, which may cause interference to the structure inside the lower mold 202 (such as cooling water pipes and ejector pins).

[0043] In one embodiment of this application, such as Figure 7 and Figure 8As shown, the support assembly 6 includes a support plate 601 and support columns 602 located at the four corners of the top of the support plate 601. It can be understood that during the first mold opening process, when the support assembly 6 is stationary, the tops of the support columns 602 engage with the dense bone area 101. This four-point positioning support effectively disperses the stress on the dense bone area 101 and also reduces the number of support columns 602, avoiding excessive structural complexity and increased processing difficulty. The support plate 601 is kept locked in a stationary state by the horizontal portion 7.

[0044] Further optimization, such as Figure 8 As shown, the support plate 601 includes an upper plate 6011 and a lower plate 6012, and the support column 602 can pass through the upper plate 6011. The upper plate 6011 and the lower plate 6012 can be installed together by bolts. The column head at the bottom of the support column 602 abuts and fits between the upper plate 6011 and the lower plate 6012, thereby enabling the simultaneous installation of multiple support columns 602, which is convenient for disassembly and maintenance.

[0045] Further preferably, the core component 5 includes a core block 501 and a mounting block 502 that are vertically distributed and detachably installable, and both the core block 501 and the mounting block 502 have grooves. During installation, the support component 6 is placed into the groove of the mounting block 502, and then the core block 501 and the mounting block 502 are connected and installed using bolts. At this time, the two grooves inside will cooperate with each other to form a mounting groove for sliding the support component 6.

[0046] Therefore, the aforementioned support component 6, core component 5, transmission rod 4021, and inclined guide post 403 are independent modules, offering high flexibility in installation and debugging. Furthermore, when a component wears out or malfunctions, only that module needs to be replaced, without disassembling and replacing the entire transmission chain, significantly reducing maintenance costs and time.

[0047] In this embodiment, as Figure 10 As shown, the injection mold for the car armrest cup holder also includes an ejector mechanism 3. The ejector mechanism 3 includes a top plate 301 and multiple ejector rods 302. The ejector rods 302 are used to form multiple square holes 102 around the product 1, and can also eject the product 1. In other words, the ejector rods 302 serve as both forming rods and subsequent ejection rods, reducing the number of parts in the mold and simplifying the mold structure.

[0048] It should also be noted that in existing technologies, such as Figure 1As shown, it is difficult to install ejector pins in such deep cavities with narrow bottom surfaces, and flash is prone to occur. However, after optimization, by rationally arranging the square ejector pins 302 at the positions of the square holes 102 around the product 1, these positions are used as ejection points, effectively ejecting the product 1. The height of the square ejector pins 302 is adjustable; when flash occurs, the height of the ejector pins 302 can be directly adjusted to reduce flash generation without affecting the molding area of ​​the product 1. The overall cost is relatively low, and it can be completed directly by wire cutting.

[0049] 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 merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A demolding mechanism for a car armrest cup holder, characterized in that, include: Lower mold; A core component, which is slidably disposed within the lower mold and used to form the dense bone area of ​​the product; A support assembly, which is slidably disposed within the core component and cooperates with the bone-dense area; as well as A driving device is disposed on the lower mold and cooperates with the core and the support assembly; during demolding, the driving device is adapted to drive the core and the support assembly to demold sequentially.

2. The demolding mechanism for the car armrest cup holder as described in claim 1, characterized in that: The core component is slidably disposed within the lower mold in the vertical direction; the driving device includes a driving block and a transmission structure, the driving block is horizontally slidably disposed within the lower mold and connected to the input end of the transmission structure, and the output end of the transmission structure cooperates with the core component and the support assembly; During demolding, the drive block is adapted to slide horizontally and drive the core and the support assembly to perform sequential demolding actions in the vertical direction through the transmission structure.

3. The demolding mechanism for the car armrest cup holder as described in claim 2, characterized in that: The transmission structure includes a transmission rod that is inclinedly arranged and installed in the drive block and a transmission groove that is inclinedly arranged in the core part, and the top end of the transmission rod is provided with a horizontal part. During demolding, the core is adapted to move downward and separate from the dense bone area under the inclined sliding cooperation of the transmission rod and the transmission groove. At this time, the support assembly is adapted to cooperate with the horizontal part to maintain a stationary state. When the support assembly separates from the horizontal part, the core is adapted to drive the support assembly to move downward synchronously.

4. The demolding mechanism for the car armrest cup holder as described in claim 3, characterized in that: The driving device also includes an inclined guide post installed on the upper mold, and an inclined guide groove is provided in the driving block; during demolding, the driving block is adapted to move horizontally under the inclined sliding cooperation of the inclined guide post and the inclined guide groove.

5. The demolding mechanism for the car armrest cup holder as described in claim 4, characterized in that: Both the inclined guide post and the inclined guide groove have rectangular cross-sections, and a locking block is installed inside the lower mold. During mold closing, the bottom end of the inclined guide post abuts against the lower mold, and the end of the transmission rod abuts against the locking block, thereby achieving the limiting and locking of the core part.

6. The demolding mechanism for the car armrest cup holder as described in claim 5, characterized in that: The support assembly includes a support plate and support columns disposed at the four corners of the top of the support plate; when the support assembly is stationary, the top of the support column abuts against the bone-dense area, and the bottom of the support plate cooperates with the horizontal part.

7. The demolding mechanism for the car armrest cup holder as described in claim 6, characterized in that: The support plate includes an upper plate and a lower plate that are distributed vertically and can be detachably installed. The support column passes through the upper plate and the column head at the bottom abuts against the lower plate to realize the installation of the support column.

8. The demolding mechanism for the cup holder of an automotive armrest as described in any one of claims 1-7, characterized in that: The core component includes a core block and a mounting block that are distributed vertically and can be detachably installed. The core block and the mounting block cooperate with each other to form a mounting groove for sliding the support component.

9. The demolding mechanism for the cup holder in a car armrest as described in claim 8, characterized in that: The injection mold for the car armrest cup holder also includes an ejector mechanism, which includes a top plate and multiple ejector rods. The ejector rods are used to form multiple square holes around the product and are suitable for ejecting the product.

Images