Bumper injection mold composite slider fan-shaped glue port feeding mechanism

Abstract

The utility model provides a kind of bumper injection mold composite sliding block sectoral glue port glue inlet mechanism, belong to mould technical field.It includes upper die plate and lower die plate, the upper die plate and lower die plate between being provided with forming cavity, the lower die plate be provided with top insert and two block side inserts, the top insert be connected by first straight top component and lower die plate lower side's top plate, the block side insert be connected by side inclined top rod and top plate.The combination design of the bottom glue inlet component of sliding block rear side of top insert, the sectoral glue port glue inlet component of front side and the inclined side position bottom glue inlet component of insert connecting place, realize multi-region collaborative glue inlet, the bottom horizontal forming surface outer edge, inner edge and lower vertical forming surface of forming cavity are respectively corresponding to the glue inlet component of different position, form all-around glue inlet layout, both improve glue inlet speed and filling efficiency, avoid the influence of too many glue ports to product quality, ensure bumper forming uniformity.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology and relates to a composite slider fan-shaped glue inlet mechanism for bumper injection molds. Background Technology

[0002] As a key exterior and load-bearing component of automobiles, the injection molding of bumpers faces significant challenges due to the characteristics of the product: Firstly, bumper products have a wide size range, and the molding cavity needs to simultaneously meet the molding requirements of horizontal panels and vertical side walls. When using the traditional single injection point design, the flow path of the rubber material in the cavity varies significantly, which not only leads to a long overall filling cycle and limited production cycle, but also easily causes quality problems such as underfilling and obvious weld lines due to the rubber material cooling too quickly at the far end. Secondly, when blindly adding gates to improve the filling effect, the gate layout often lacks adaptability to the molding surface, leaving dense gate residue marks on the product surface. This not only reduces the appearance but may also create stress weak points in the gate area, affecting the bumper's impact resistance and structural durability.

[0003] For example, a Chinese patent discloses an automobile bumper mold [application number: 201621240873.0], which includes a mold body. The mold body needs to be provided with a hole-opening mechanism at the hole opening on the bumper. The hole-opening mechanism includes a cylindrical receiving hole provided on the mold body. A hole-opening post for opening the hole is provided in the receiving hole. A locking mechanism for locking the hole-opening post and completely receiving it in the receiving hole is provided between the hole-opening post and the receiving hole. Summary of the Invention

[0004] The purpose of this utility model is to address the above-mentioned problems by providing a composite slider fan-shaped glue inlet mechanism for bumper injection molds.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A composite slider fan-shaped glue inlet mechanism for a bumper injection mold includes an upper mold plate and a lower mold plate. A molding cavity is provided between the upper and lower mold plates. The lower mold plate is provided with a top insert and two side inserts. The top insert is connected to the top plate on the lower side of the lower mold plate through a first vertical push assembly. The side inserts are connected to the top plate through side inclined push rods. The top insert and the side inserts respectively have a lower horizontal molding surface and a lower vertical molding surface that form the molding cavity. A plurality of slider bottom glue inlet assemblies connected to the outer edge of the lower horizontal molding surface are provided on the rear side of the top insert. A plurality of fan-shaped glue inlet assemblies connected to the inner edge of the lower horizontal molding surface are provided on the front side of the top insert. An inclined side bottom glue inlet assembly connected to the lower vertical molding surface is also provided at the connection between the top insert and the side inserts.

[0006] In the aforementioned composite slider fan-shaped glue inlet mechanism for bumper injection molds, several bottom glue inlet components of the sliders are distributed in a straight line.

[0007] In the aforementioned composite slider fan-shaped glue inlet mechanism for bumper injection molds, the bottom glue inlet component of the slider includes a glue inlet slider embedded in the top insert. The glue inlet slider has a bottom glue inlet channel recessed inward on the connection surface with the lower horizontal molding surface, and the top of the connection surface has a glue outlet. The side of the glue inlet slider has a glue inlet connected to the bottom glue inlet channel.

[0008] In the aforementioned composite slider fan-shaped glue inlet mechanism for bumper injection molds, the glue inlet slider is connected to the top plate via a straight push rod or an angled push rod.

[0009] In the aforementioned bumper injection mold composite slider fan-shaped glue inlet mechanism, the fan-shaped glue inlet assembly includes a side glue inlet channel recessed inward on the top insert, and the connection between the side glue inlet channel and the lower horizontal molding surface is provided with a fan-shaped flared portion.

[0010] In the aforementioned bumper injection mold composite slider fan-shaped glue inlet mechanism, the inclined side bottom glue inlet component includes a side connecting flow channel disposed on the upper end face of the side insert in an area not covered by the top insert. The outer end face of the side insert is also provided with a side flow channel connected to the side connecting flow channel. The end of the side flow channel away from the side connecting flow channel is connected to the lower vertical forming surface side.

[0011] In the aforementioned composite slider fan-shaped glue inlet mechanism for bumper injection molds, a rectangular core rod is horizontally arranged on the upper template, corresponding to the lower vertical forming surface. The inner end of the rectangular core rod abuts against the lower vertical forming surface. The upper template is also provided with a vertical flat pull assembly connected to the rectangular core rod.

[0012] In the aforementioned bumper injection mold composite slider fan-shaped glue inlet mechanism, the vertical flat pull assembly includes a push-pull slider connected to the outer end of the rectangular core rod through an oblique guide structure and a lifting driver connected to the push-pull slider. The upper template is also provided with a guide sleeve that is slidably connected to the push-pull slider. The lifting driver is fixed on the upper template and located on the upper side of the guide sleeve.

[0013] In the aforementioned composite slider fan-shaped glue inlet mechanism for bumper injection molds, the oblique guide structure includes a push-pull groove with a T-shaped cross-section that is obliquely disposed on the inner end face of the push-pull slider and is obliquely disposed on the outer end of the rectangular core rod. The T-shaped connecting block is inserted into the push-pull groove. A guide groove with a T-shaped cross-section is vertically disposed inside the guide sleeve. The push-pull slider has a T-shaped cross-section and is inserted into the guide groove.

[0014] In the aforementioned composite slider fan-shaped glue inlet mechanism for bumper injection molds, the first vertical top assembly includes several vertically fixed insert lifting rods on the top plate, with the top end of the insert lifting rod connected to the bottom end of the top insert.

[0015] Compared with existing technologies, the advantages of this utility model are: 1. By combining the bottom glue injection component of the slider on the rear side of the top insert, the fan-shaped glue inlet component on the front side, and the bottom glue injection component at the oblique side of the insert connection, multi-area coordinated glue injection is achieved. The glue injection components at different positions correspond to the outer edge, inner edge and lower vertical molding surface of the lower horizontal molding surface of the molding cavity, forming an all-round glue injection layout. This not only improves the glue injection speed and filling efficiency, but also avoids the impact of too many glue inlets on product quality, ensuring the uniformity of bumper molding.

[0016] 2. The bottom glue inlet assembly of the slider adopts a glue inlet slider embedded structure. Its recessed bottom glue inlet channel and top glue outlet design on the connection surface with the lower horizontal molding surface enable the glue to be accurately guided to the molding area, and the glue outlet is formed on the back edge of the product, reducing the impact of the glue outlet on the outer surface quality of the product. The glue inlet on the side of the glue inlet slider is easy to connect with the external glue circuit to achieve stable glue delivery. This structure optimizes the glue inlet channel layout, reduces the glue flow resistance, avoids glue stagnation, and facilitates the disassembly and maintenance of the glue inlet assembly.

[0017] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a structural diagram of the lower template; Figure 3 This is a partial structural diagram of the lower template; Figure 4 yes Figure 2 Enlarged view of point A in the middle; Figure 5 yes Figure 3 Enlarged view of point B in the middle; Figure 6 This is a partial structural diagram of the glue injection components at the bottom of several sliders; Figure 7 This is a schematic diagram of the glue injection slider; Figure 8 This is a structural diagram of a rectangular core rod and a vertical flat pull assembly. Detailed Implementation

[0019] like Figures 1-8As shown, a composite slider fan-shaped glue inlet mechanism for a bumper injection mold includes an upper template 1 and a lower template 2. A molding cavity is provided between the upper template 1 and the lower template 2. The lower template 2 is provided with a top insert 3 and two side inserts 4. The top insert 3 is connected to the top plate 5 on the lower side of the lower template 2 through a first vertical push assembly. The side inserts 4 are connected to the top plate 5 through a side inclined push rod. The top insert 3 and the side inserts 4 respectively have a lower horizontal molding surface 6 and a lower vertical molding surface 7 that form the molding cavity. A plurality of slider bottom glue inlet assemblies 8 connected to the outer edge of the lower horizontal molding surface 6 are provided on the rear side of the top insert 3. A plurality of fan-shaped glue inlet assemblies 9 connected to the inner edge of the lower horizontal molding surface 6 are provided on the front side of the top insert 3. An inclined side bottom glue inlet assembly 10 connected to the lower vertical molding surface 7 is also provided at the connection between the top insert 3 and the side inserts 4.

[0020] In this invention, the combined design of the bottom glue injection component of the slider on the rear side of the top insert, the fan-shaped glue inlet component on the front side, and the bottom glue injection component at the oblique side of the insert connection point enables multi-area coordinated glue injection. The glue injection components at different positions correspond to the outer edge, inner edge, and lower vertical molding surface of the lower horizontal molding surface of the molding cavity, forming an all-round glue injection layout. This not only improves the glue injection speed and filling efficiency, but also avoids the impact of too many glue inlets on product quality, ensuring the uniformity of bumper molding.

[0021] Specifically, several bottom glue-feeding components 8 of the sliders are arranged in a straight line. This straight-line distribution of the bottom glue-feeding components creates a regular glue-feeding path in the bottom glue-feeding area. This distribution ensures uniform glue-feeding at the outer edge of the lower horizontal molding surface, avoiding molding defects caused by uneven local glue-feeding pressure. At the same time, it facilitates rapid horizontal diffusion of the glue, further improving filling efficiency.

[0022] Specifically, the bottom glue inlet assembly 8 of the slider includes a glue inlet slider 11 embedded in the top insert 3. The glue inlet slider 11 has a bottom glue inlet channel 12 recessed inward on the connection surface with the lower horizontal forming surface 6, and a glue outlet 13 at the top of the connection surface. The side of the glue inlet slider 11 has a glue inlet 14 connected to the bottom glue inlet channel 12. The bottom glue inlet assembly of the slider adopts a glue inlet slider embedded structure. Its design of the recessed bottom glue inlet channel and the top glue outlet on the connection surface with the lower horizontal forming surface allows the glue to be accurately guided to the forming area, and allows the glue outlet to be formed on the edge of the back of the product, reducing the impact of the glue outlet on the outer surface quality of the product. The glue outlet on the side of the glue inlet slider is convenient to connect with the external glue path to achieve stable glue delivery. This structure optimizes the glue inlet channel layout, reduces the glue flow resistance, avoids glue stagnation, and facilitates the disassembly and maintenance of the glue inlet assembly.

[0023] Specifically, the injection slider 11 is connected to the top plate 5 via a straight ejector rod or an angled ejector rod. This allows the injection slider to move synchronously with the top plate for demolding. This design avoids the interference problem between the injection slider and the product during demolding in traditional injection structures, ensuring a smooth demolding process, reducing deformation or damage to the product caused by uneven demolding forces, and improving the product molding quality.

[0024] Specifically, the fan-shaped glue inlet assembly 9 includes a side glue inlet channel 15 recessed inward on the top insert 3, and a fan-shaped flared portion 16 is provided at the connection between the side glue inlet channel 15 and the lower horizontal molding surface 6. The fan-shaped flared portion design at the connection between the side glue inlet channel and the lower horizontal molding surface of the fan-shaped glue inlet assembly increases the contact area of ​​the glue entering the molding cavity. The fan-shaped flared portion allows the glue to spread quickly and evenly when entering the inner edge of the lower horizontal molding surface, avoiding local glue accumulation, reducing molding defects such as bubbles and shrinkage marks, and improving the surface quality of the product.

[0025] Specifically, the oblique bottom glue injection assembly 10 includes a side connecting channel 17 disposed on the upper surface of the side insert 4 in an area not covered by the top insert 3. The outer end face of the side insert 4 also has a side channel 18 connected to the side connecting channel 17. The end of the side channel 18 away from the side connecting channel 17 is connected to the side of the lower vertical molding surface 7. The oblique bottom glue injection assembly, through the cooperation of the side connecting channel and the side channel on the side insert, guides the glue material to the side of the lower vertical molding surface. This structure achieves precise glue injection into the vertical area of ​​the molding cavity, solving the problem of traditional glue injection methods failing to cover the vertical molding surface, ensuring full filling of the vertical parts of the bumper, and avoiding material shortages or incomplete molding.

[0026] Specifically, the upper template 1 also has a rectangular core rod 19 horizontally arranged corresponding to the lower vertical forming surface 7. The inner end of the rectangular core rod 19 abuts against the lower vertical forming surface 7. The upper template 1 also has a vertical flat pull assembly 20 connected to the rectangular core rod 19. The rectangular core rod of the upper template abuts against the lower vertical forming surface, and together with the vertical flat pull assembly, it not only achieves precise positioning and forming in the vertical direction of the forming cavity, but also facilitates the smooth removal of the rectangular core rod during demolding. The setting of the rectangular core rod improves the forming accuracy of the vertical part of the bumper, while the vertical flat pull assembly avoids interference between the core rod and the product during demolding, ensuring the integrity of the product shape.

[0027] Specifically, the vertical flat-pull assembly 20 includes a push-pull slider 21 connected to the outer end of the rectangular core rod 19 via an oblique guide structure, and a lifting driver 22 connected to the push-pull slider 21. The upper template 1 is also provided with a guide sleeve 23 slidably connected to the push-pull slider 21. The lifting driver 22 is fixed on the upper template 1 and located above the guide sleeve 23. The push-pull slider of the vertical flat-pull assembly is connected to the rectangular core rod via the oblique guide structure. The lifting driver drives the push-pull slider to move up and down along the guide sleeve, thereby driving the rectangular core rod to move horizontally. This structure converts the vertical driving force into a horizontal core-pulling force, realizing the smooth pulling of the rectangular core rod. The force is evenly distributed during the core-pulling process, avoiding core rod jamming or product deformation. At the same time, the guide sleeve ensures the accurate movement trajectory of the push-pull slider, improving the core-pulling accuracy.

[0028] Those skilled in the art should understand that the lifting drive can be a hydraulic cylinder, a pneumatic cylinder, or a linear motor, etc.

[0029] Specifically, the inclined guide structure includes a push-pull groove 24 with a T-shaped cross-section, inclinedly disposed on the inner end face of the push-pull slider 21, and a T-shaped connecting block 25 inclinedly disposed on the outer end of the rectangular core rod 19. The T-shaped connecting block 25 is inserted into the push-pull groove 24. A guide groove 26 with a T-shaped cross-section is vertically disposed inside the guide sleeve 23. The push-pull slider 21 has a T-shaped cross-section and is inserted into the guide groove 26. The T-shaped push-pull groove and the T-shaped connecting block cooperate to achieve a stable connection between the push-pull slider and the rectangular core rod, ensuring reliable power transmission and avoiding core pulling deviation caused by relative sliding. The cooperation between the T-shaped guide groove and the T-shaped cross-section push-pull slider further limits the movement direction of the push-pull slider, preventing it from deviating or swaying during lifting and lowering, and ensuring the stability and accuracy of the vertical horizontal pulling assembly.

[0030] Specifically, the first vertical ejector assembly includes several insert lifting rods 27 vertically fixed on the top plate 5, with the top ends of the insert lifting rods 27 connected to the bottom ends of the top inserts 3. The insert lifting rods of the first vertical ejector assembly vertically connect the top plate and the top inserts, allowing the top inserts to rise smoothly and synchronously with the top plate during demolding. This design ensures uniform force distribution on the top inserts, preventing product damage or mold jamming caused by tilting of the top inserts during demolding. Simultaneously, the distribution of the lifting rods enhances the stability of the top insert's lifting and extends the mold's service life.

[0031] The working principle of this utility model is as follows: Through the combined design of the bottom glue injection component of the slider on the rear side of the top insert, the fan-shaped glue inlet glue injection component on the front side, and the bottom glue injection component at the oblique side of the insert connection, multi-area coordinated glue injection is achieved. The glue injection components at different positions correspond to the outer edge, inner edge and lower vertical forming surface of the lower horizontal forming surface of the forming cavity, forming an all-round glue injection layout, which not only improves the glue injection speed and filling efficiency, but also avoids the impact of too many glue inlets on product quality and ensures the uniformity of bumper forming. The bottom-mounted glue inlet assembly of the slider adopts a glue inlet slider embedded structure. Its recessed bottom glue inlet channel and top outlet design, which connects to the lower horizontal molding surface, allow for precise guidance of the glue to the molding area. Furthermore, it ensures the glue outlet forms on the edge of the product's back side, minimizing its impact on the product's surface quality. The glue inlet on the side of the slider facilitates connection to external glue circuits, enabling stable glue delivery. This structure optimizes the glue inlet channel layout, reduces glue flow resistance, prevents glue stagnation, and facilitates the disassembly and maintenance of the glue inlet assembly. The fan-shaped flared section at the connection point between the side glue inlet channel and the lower horizontal molding surface of the fan-shaped glue outlet assembly... The design expands the contact area of ​​the rubber material entering the molding cavity. The fan-shaped flare allows the rubber material to spread quickly and evenly when it enters the inner edge of the lower horizontal molding surface, avoiding local rubber material accumulation, reducing molding defects such as bubbles and shrinkage marks, and improving the surface quality of the product. The oblique side bottom injection component guides the rubber material to the side of the lower vertical molding surface through the side connecting channel on the side insert and the side channel. This structure achieves precise injection of rubber material into the vertical area of ​​the molding cavity, solving the problem that traditional injection methods cannot cover the vertical molding surface, ensuring that the vertical part of the bumper is fully filled and avoiding the occurrence of material shortage or incomplete molding. The rectangular core rod of the upper template abuts against the lower vertical forming surface. Combined with the vertical flat-pull assembly, this achieves precise vertical positioning and forming of the forming cavity, while also facilitating the smooth removal of the rectangular core rod during demolding. The rectangular core rod enhances the forming accuracy of the vertical parts of the bumper, while the vertical flat-pull assembly prevents interference between the core rod and the product during demolding, ensuring the integrity of the product shape. The push-pull slider of the vertical flat-pull assembly is connected to the rectangular core rod via an oblique guide structure. The lifting driver drives the push-pull slider to rise and fall along the guide sleeve, thereby causing the rectangular core rod to move horizontally. This structure converts the vertical driving force into a horizontal core-pulling force, achieving smooth removal of the rectangular core rod. The force is evenly distributed during the core-pulling process, preventing core rod jamming or product deformation. Simultaneously, the guide sleeve ensures precise movement of the push-pull slider, improving core-pulling accuracy.

[0032] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A composite slider fan-shaped glue inlet mechanism for a bumper injection mold, comprising an upper template (1) and a lower template (2), characterized in that, A molding cavity is provided between the upper template (1) and the lower template (2). The lower template (2) is provided with a top insert (3) and two side inserts (4). The top insert (3) is connected to the top plate (5) on the lower side of the lower template (2) through a first vertical top component. The side inserts (4) are connected to the top plate (5) through a side inclined top rod. The top insert (3) and the side inserts (4) are respectively provided with a lower horizontal molding surface (6) and a lower vertical molding surface (7) that form the molding cavity. The rear side of the top insert (3) is provided with a number of slider bottom glue inlet components (8) connected to the outer edge of the lower horizontal molding surface (6). The front side of the top insert (3) is provided with a number of fan-shaped glue inlet components (9) connected to the inner edge of the lower horizontal molding surface (6). The connection between the top insert (3) and the side inserts (4) is also provided with a slanted side bottom glue inlet component (10) connected to the lower vertical molding surface (7).

2. The composite slider fan-shaped glue inlet mechanism for bumper injection molds according to claim 1, characterized in that, Several bottom glue injection components (8) of the sliders are distributed in a straight line.

3. The composite slider fan-shaped glue inlet mechanism for bumper injection molds according to claim 2, characterized in that, The bottom glue injection assembly (8) of the slider includes a glue injection slider (11) embedded in the top insert (3). The glue injection slider (11) and the lower horizontal molding surface (6) have an inwardly recessed bottom glue injection channel (12) and a glue outlet (13) at the top of the connecting surface. The side of the glue injection slider (11) has a glue inlet (14) connected to the bottom glue injection channel (12).

4. The composite slider fan-shaped glue inlet mechanism for bumper injection molds according to claim 3, characterized in that, The glue-feeding slider (11) is connected to the top plate (5) via a straight push rod or an inclined push rod.

5. The composite slider fan-shaped glue inlet mechanism for bumper injection molds according to claim 4, characterized in that, The fan-shaped glue inlet assembly (9) includes a side glue inlet channel (15) recessed inward on the top insert (3), and a fan-shaped flared part (16) is provided at the connection between the side glue inlet channel (15) and the lower horizontal molding surface (6).

6. The composite slider fan-shaped glue inlet mechanism for bumper injection molds according to claim 5, characterized in that, The oblique bottom glue injection assembly (10) includes a side connection channel (17) provided on the upper surface of the side insert (4) in an area not covered by the top insert (3). The outer end face of the side insert (4) is also provided with a side channel (18) connected to the side connection channel (17). The side channel (18) is connected to the side of the lower vertical forming surface (7) at one end away from the side connection channel (17).

7. The composite slider fan-shaped glue inlet mechanism for bumper injection molds according to claim 3, characterized in that, The upper template (1) is also provided with a rectangular core rod (19) that corresponds to the lower vertical forming surface (7). The inner end of the rectangular core rod (19) abuts against the lower vertical forming surface (7). The upper template (1) is also provided with a vertical flat pull assembly (20) connected to the rectangular core rod (19).

8. The composite slider fan-shaped glue inlet mechanism for bumper injection molds according to claim 7, characterized in that, The vertical flat pull assembly (20) includes a push-pull slider (21) connected to the outer end of the rectangular core rod (19) through an oblique guide structure and a lifting driver (22) connected to the push-pull slider (21). The upper template (1) is also provided with a guide sleeve (23) that is slidably connected to the push-pull slider (21). The lifting driver (22) is fixed on the upper template (1) and located on the upper side of the guide sleeve (23).

9. The composite slider fan-shaped glue inlet mechanism for bumper injection molds according to claim 8, characterized in that, The oblique guide structure includes a push-pull groove (24) with a T-shaped cross-section that is obliquely disposed on the inner end face of the push-pull slider (21) and a T-shaped connecting block (25) that is obliquely disposed on the outer end of the rectangular core rod (19). The T-shaped connecting block (25) is inserted into the push-pull groove (24). A guide groove (26) with a T-shaped cross-section is vertically disposed inside the guide sleeve (23). The push-pull slider (21) has a T-shaped cross-section and is inserted into the guide groove (26).

10. The composite slider fan-shaped glue inlet mechanism for bumper injection molds according to claim 1, characterized in that, The first vertical top assembly includes several insert lifting rods (27) that are vertically fixed on the top plate (5), with the top end of the insert lifting rod (27) connected to the bottom end of the top insert (3).

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