Latent tunnel glue feeding mold

Abstract

The application discloses a latent tunnel glue feeding mold, which comprises a mold main body and a glue feeding sliding block. The glue feeding sliding block is arranged on the mold main body and slides along a first direction. The glue feeding sliding block and the mold main body are suitable for cooperating to form a decorative part. The decorative part has a jointing side and a connecting side, and the jointing side and the connecting side are adjacent. The glue feeding sliding block is suitable for forming the connecting side. The connecting side is provided with a buckle part which protrudes outward. The demolding direction of the buckle part and the glue feeding sliding block is the first direction. A first flow channel is formed in the glue feeding sliding block along the first direction. The first flow channel is connected with the connecting side. Residual material formed in the first flow channel is suitable for being separated from the first flow channel along the first direction. The application has the characteristics of hidden glue feeding and convenient demolding. The gate is arranged on the inner side of the decorative part, the mold line on the jointing side of the decorative part is reduced, and meanwhile, the residual material can be synchronously core-pulling demolded with the decorative part, and the process is more smooth.

Description

Technical Field

[0001] This application relates to the field of mold equipment technology, specifically to a submerged tunnel injection mold. Background Technology

[0002] Mold injection is a crucial step in the injection molding process, where molten plastic is injected into the mold cavity. Its design directly affects the product's appearance, structural strength, and production efficiency. Molds typically use gates to inject plastic, which are narrow channels connecting the runner and the cavity, controlling the flow of plastic and influencing molding quality.

[0003] However, existing mold injection methods have the following drawbacks: In conventional injection methods, independent injection sliders are used, and both the injection slider's engagement position and the injection position are located on the product's splice line side. The presence of the injection slider's edge and the subsequent removal of residual material from the injection position can easily leave mold line marks on the product's splice line side, affecting the product's aesthetics. Summary of the Invention

[0004] One objective of this application is to provide a concealed injection mold with a convenient demolding design and a hidden tunnel injection mold.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a submerged tunnel gluing mold, comprising a mold body and a gluing slider, wherein the gluing slider is slidably disposed on the mold body along a first direction, the gluing slider and the mold body are adapted to cooperate in molding a decorative part, the decorative part having a splicing side and a connecting side, the splicing side and the connecting side being adjacent, the gluing slider being adapted to mold the connecting side, a snap-fit ​​portion protruding from the connecting side, the snap-fit ​​portion and the gluing slider being demolded in the first direction, a first flow channel being formed on the gluing slider along the first direction, the first flow channel being connected to the connecting side, and residual material formed in the first flow channel being adapted to detach from the first flow channel along the first direction.

[0006] In some embodiments, the glue-feeding slider is provided along the joint line of the trim piece on the splicing side and the connecting side.

[0007] In some embodiments, the injection slider and the mold body are adapted to cooperate to form a second flow channel, the second flow channel connecting the first flow channel and the connecting side, the second flow channel being arranged along a second direction, the second direction intersecting the connecting side.

[0008] In some embodiments, the mold body forms a sidewall on the side of the second flow channel away from the first flow channel, and the injection slider forms a sidewall on the side of the second flow channel close to the first flow channel; the angle between the sidewall of the second flow channel close to the first flow channel and the first flow channel is not less than 90°.

[0009] In some embodiments, in the second direction, the cross-section of the first flow channel gradually narrows from the direction away from the connection side to the direction closer to the connection side.

[0010] In some embodiments, in a first direction, the cross-section of the first flow channel gradually narrows from the trim piece toward the glue injection slider; in the first direction, the first flow channel has an upward trend from the end near the glue injection slider to the end away from the glue injection slider.

[0011] In some embodiments, the glue injection slider is provided with a downward recess, one end of the first flow channel is located in the recess, and the opening of the first flow channel at the recess extends upward to form a flow channel groove.

[0012] In some embodiments, the depth of the flow channel is less than the width of the opening of the first flow channel within the glue injection slider.

[0013] In some embodiments, the connecting side faces the loading side of the mold; the angle between the first direction and the connecting side is α, 0°≤α≤90°.

[0014] In some embodiments, the mold body is provided with an ejector pin, which is located below the first flow channel and close to the connecting side direction. The ejector pin is adapted to cooperate in supporting and lifting residual material in the first flow channel.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: The mold of this application optimizes the injection slide and the gate to the connecting side of the trim, realizing a hidden tunnel injection method. This allows the mold line marks generated on the trim by the edge of the injection slide and the mold line marks generated on the trim when the runner residual material is cut to be hidden on the connecting side of the trim, thereby reducing the number of mold lines on the trim splicing side and improving the overall appearance of the trim. At the same time, the optimized gate can achieve normal demolding when the injection slide is pulled, improving the smoothness of demolding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the glue injection state according to a preferred embodiment of this application.

[0017] Figure 2 This is a top view of the glue injection state according to a preferred embodiment of this application.

[0018] Figure 3 This is a cross-sectional view of the glue injection state according to a preferred embodiment of this application.

[0019] Figure 4 This is a preferred embodiment according to this application. Figure 3 A magnified view of point a in the middle.

[0020] Figure 5 This is a schematic diagram of the demolding state according to a preferred embodiment of this application.

[0021] Figure 6 This is a cross-sectional view of the glue injection state according to a preferred embodiment of this application.

[0022] In the diagram: 1. Mold body; 11. Ejector pin; 2. Injection slider; 21. Recessed part; 3. Decorative part; 31. Parting line side; 32. Connecting side; 33. Buckling part; 4. First runner; 41. Runner groove; 5. Second runner. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] The following description, in conjunction with the accompanying drawings, further illustrates this application:

[0028] like Figures 1 to 6As shown, this application provides a caulking tunnel injection mold, including a mold body 1 and an injection slider 2. The injection slider 2 is slidably disposed on the mold body 1 along a first direction x. The injection slider 2 and the mold body 1 are adapted to cooperate in molding a decorative part 3. The decorative part 3 has a splicing side 31 and a connecting side 32, which are adjacent to each other. The injection slider 2 is adapted to mold the connecting side 32. A snap-fit ​​part 33 is protruding on the connecting side 32. The demolding direction of the snap-fit ​​part 33 and the injection slider 2 is the first direction x. A first flow channel 4 is opened on the injection slider 2 along the first direction x. The first flow channel 4 is connected to the connecting side 32. The residual material formed in the first flow channel 4 is adapted to detach from the first flow channel 4 along the first direction x.

[0029] In this application, the splicing side 31 can refer to the surface of the trim 3 that is directly exposed to the outside and can be observed, or it can refer to the surface at the joint of two trim pieces 3. Normally, the gap between the two trim pieces 3 is uniform when they are spliced. When the surface at the joint of the trim pieces 3 produces a mold line due to the presence of the injection slider 2 or the gate, it is relatively easy for the user to observe, which affects the aesthetics of the trim pieces 3. Therefore, this application optimizes the position of the injection slider 2 and the gate of the runner so that the mold line is formed on the connecting side 32 of the trim piece 3 that is not observed, thereby achieving the hiding of the mold line.

[0030] Meanwhile, since the connecting side 32 of the decorative part 3 of this application is provided with a snap-fit ​​part 33, the optimized injection slider 2, runner and gate need to adapt to the core pulling and demolding process of the snap-fit ​​part 33. By unifying the direction of the first runner 4 in the injection slider 2 with the demolding direction of the injection slider 2 and the snap-fit ​​part 33, the residual material in the first runner 4 can be separated from the injection slider 2 at the same time when the injection slider 2 is pulled out, and demold smoothly together with the decorative part 3.

[0031] Understandably, with the above-mentioned optimized design, the mold line can be transferred to the connecting side 32 of the trim 3 without affecting the splicing side 31, so as to ensure the integrity of the splicing side 31. At the same time, the new runner and gate can be demolded normally and smoothly.

[0032] like Figure 1 , 2 In the embodiment shown in Figure 5, the glue injection slider 2 is arranged along the joint line of the splicing side 31 and the connecting side 32 of the trim 3. Considering that the end of the mold line may be exposed on the splicing side 31, affecting the appearance of the trim 3, the number of mold lines is reduced by making the structure of the splicing side 31 of the trim 3 as integral as possible, and the position of the mold line is made as close as possible to the corner, thereby further reducing the visual impact of the mold line.

[0033] like Figure 3In the embodiment shown, the injection slider 2 and the mold body 1 are adapted to form a second flow channel 5. The second flow channel 5 connects the first flow channel 4 and the connecting side 32. The second flow channel 5 is arranged along the second direction y, which intersects with the connecting side 32. Since the connecting side 32 is located inside the trim 3, the second flow channel 5 and the connecting side 32 are not parallel, ensuring that a demolding angle can be formed between the first flow channel 4 and the connecting side 32, thus avoiding structural interference.

[0034] The first flow channel 4 and the second flow channel 5 can work together to form an L-shaped flow channel structure, which allows the flow channel structure to avoid the splicing side 31 located on the outside of the ornament 3 and to be poured from the connecting side 32 located on the inside of the ornament 3.

[0035] like Figure 3 In the embodiment shown, the second flow channel 5 is a split structure, formed by the mold body 1 and the injection slider 2. The mold body 1 forms the side wall of the second flow channel 5 away from the first flow channel 4, and the injection slider 2 forms the side wall of the second flow channel 5 close to the first flow channel 4. This allows the second flow channel 5 to be split during core pulling. After the injection slider 2 is detached, the residual material in the second flow channel 5 can be exposed to the outside, and the structural interference restriction on the residual material in the second flow channel 5 is removed, thereby facilitating the subsequent demolding operation.

[0036] like Figure 3 In the embodiment shown, the angle between the sidewall of the second flow channel 5 near the first flow channel 4 and the first flow channel 4 is not less than 90°, which reduces the probability of structural interference between the glue injection slider 2 and the connecting side 32 and the residual material in the second flow channel 5 when the second flow channel 5 is disassembled, protects the connection state of the connecting side 32 and the residual material in the second flow channel 5, and thus avoids damage to the decorative part 3.

[0037] The L-shaped runner structure of this application differs from the traditional horn-shaped runner structure. When the mold is opened, the residual material in the runner is not affected by the core-pulling action of the injection slider 2. The residual material in the first runner 4 can smoothly detach from the first runner 4 with the action of the injection slider 2 without structural interference, thus avoiding damage to the decorative part 3 caused by the residual material being torn off with the core-pulling and mold-opening action.

[0038] Specifically, in some embodiments, in the first direction x, the cross section of the first flow channel 4 gradually shrinks from the trim 3 toward the glue injection slider 2. This design makes it easier for residual material in the first flow channel 4 to detach from the first flow channel 4, reducing the probability of residual material remaining in the first flow channel 4 or being pulled and damaged by the first flow channel 4.

[0039] like Figure 3 , 4In the embodiment shown in Figure 6, the injection slider 2 is provided with a downward recessed portion 21. One end of the first flow channel 4 is located in the recessed portion 21. The opening of the first flow channel 4 at the recessed portion 21 extends upward to form a flow channel groove 41. The recessed portion 21 can guide the nozzle of the injection molding machine to be positioned, and at the same time can prevent excessive overflow from the nozzle during injection and flow onto the mold body 1 or other components. The flow channel groove 41 can effectively receive the liquid from the nozzle of the injection molding machine.

[0040] like Figure 3 , 4 In the embodiments shown in Figure 6, the depth of the flow channel 41 is less than the width of the opening of the first flow channel 4 in the glue injection slider 2, so that the residual material in the flow channel 41 can more easily enter the first flow channel 4 and then leave the glue injection slider 2, reducing the probability of residual material remaining in the first flow channel 4 or being pulled and damaged by the first flow channel 4.

[0041] like Figure 3 and 6 In the embodiment shown, in the second direction y, the cross-section of the first flow channel 4 gradually shrinks from the direction away from the connecting side 32 to the direction closer to the connecting side 32, so that the molten plastic from the first flow channel 4 enters and fills the cavity at a faster speed. After the cavity is filled with plastic, the gate can be quickly cooled and sealed to prevent the hot material in the cavity from flowing back. At the same time, the shrinkage structure can facilitate the removal of waste material.

[0042] like Figure 3 , 4 In the embodiments shown in Figure 6, in the first direction x, the first flow channel 4 has an upward trend from the end near the glue injection slider 2 to the end away from the glue injection slider 2, which can improve the stability of the liquid and the rise of the liquid surface during casting and improve the casting quality.

[0043] like Figure 3 , 4 In the embodiment shown in Figure 6, the connecting side 32 faces the loading side of the mold, so that the connecting side 32 can be joined with the second runner 5, and the L-shaped runner structure formed by the first runner 4 and the second runner 5 can realize the lifting pouring operation and improve the pouring quality.

[0044] like Figure 4 In the embodiment shown, the included angle between the first direction x and the connecting side 32 is α, 0°≤α≤90°, which reduces the probability of structural interference between the glue injection slider 2 and the connecting side 32 when the core is pulled out, and improves the smoothness of the core pulling and demolding of the glue injection slider 2.

[0045] like Figure 3 , 4In the embodiment shown in Figure 6, an ejector pin 11 is provided on the mold body 1. The ejector pin 11 is located below the first flow channel 4 and close to the connecting side 32. The ejector pin 11 is adapted to cooperate in supporting and lifting the residual material in the first flow channel 4. The ejector pin 11 is used to help the residual material follow the trim 3 for demolding, reduce the probability of relative movement between the residual material and the trim 3, especially reduce the probability of changes at the connection between the residual material and the trim 3, thereby protecting the trim 3 from damage.

[0046] In some embodiments, the ejector pin 11 is located below the second flow channel 5 and close to the connecting side 32. The ejector pin 11 is adapted to cooperate in supporting and lifting the residual material in the second flow channel 5, which can achieve an effect similar to that of the ejector pin 11 being located below the first flow channel 4.

[0047] 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 submerged tunnel gluing mold, characterized in that: The device includes a mold body and a glue injection slider. The glue injection slider is slidably disposed on the mold body along a first direction. The glue injection slider and the mold body are adapted to cooperate in molding a decorative part. The decorative part has a splicing side and a connecting side. The splicing side and the connecting side are adjacent. The glue injection slider is adapted to mold the connecting side. A snap-fit ​​part is protruding on the connecting side. The demolding direction of the snap-fit ​​part and the glue injection slider is the first direction. A first flow channel is formed on the glue injection slider along the first direction. The first flow channel is connected to the connecting side. The residual material formed in the first flow channel is adapted to detach from the first flow channel along the first direction.

2. The submerged tunnel gluing mold as described in claim 1, characterized in that: The glue-feeding slider is arranged along the joint line of the trim piece on the splicing side and the connecting side.

3. The submerged tunnel gluing mold as described in claim 1, characterized in that: The injection slider and the mold body are adapted to cooperate to form a second flow channel, the second flow channel connects the first flow channel and the connecting side, the second flow channel is arranged along a second direction, and the second direction intersects with the connecting side.

4. The submerged tunnel gluing mold as described in claim 3, characterized in that: The mold body forms a sidewall on the side of the second flow channel away from the first flow channel, and the injection slider forms a sidewall on the side of the second flow channel close to the first flow channel; the angle between the sidewall of the second flow channel close to the first flow channel and the first flow channel is not less than 90°.

5. The submerged tunnel gluing mold as described in claim 3, characterized in that: In the second direction, the cross-section of the first flow channel gradually narrows from the direction away from the connection side to the direction closer to the connection side.

6. The submerged tunnel gluing mold as described in claim 1, characterized in that: In a first direction, the cross-section of the first flow channel gradually narrows from the trim piece toward the glue injection slider; in the first direction, the first flow channel tends to rise from the end near the glue injection slider to the end away from the glue injection slider.

7. The submerged tunnel gluing mold as described in claim 1, characterized in that: The glue-feeding slider has a downward recessed portion, one end of the first flow channel is located in the recessed portion, and the opening of the first flow channel at the recessed portion extends upward to form a flow channel groove.

8. The submerged tunnel gluing mold as described in claim 7, characterized in that: The depth of the flow channel groove is less than the width of the opening of the first flow channel within the glue injection slider.

9. The submerged tunnel gluing mold as described in claim 1, characterized in that: The connecting side faces the loading side of the mold; the angle between the first direction and the connecting side is α, 0°≤α≤90°.

10. The submerged tunnel gluing mold as described in claim 1, characterized in that: The mold body is provided with ejector pins, which are located below the first flow channel and close to the connecting side. The ejector pins are adapted to cooperate in supporting and lifting the residual material in the first flow channel.

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