Engine manifold injection mold combined demolding structure

Abstract

The application relates to an engine manifold injection mold combined demolding structure, which comprises a front mold, a back mold, a core-pulling structure and an ejection structure, the front mold comprises an A plate and a core, the back mold comprises a support plate, a B plate and a cavity, the support plate is connected with the B plate through a fixed block and a B plate oil cylinder, the core-pulling structure comprises a flange pipe orifice core-pulling assembly and an air inlet core-pulling assembly, the flange pipe orifice core-pulling assembly comprises a guide plate, four guide seats I and four core-pulling sliders I, the air inlet core-pulling assembly comprises a guide block, a core-pulling slider II and a guide seat II, and the ejection structure comprises two groups of inclined ejection assemblies, which are composed of inclined ejection guide blocks, inclined ejection sliders and inclined ejection push plates. The core-pulling structure and the ejection structure are integrated into the B plate, the cavity and the support plate of the back mold, the molding of a complex product structure and multidirectional demolding can be completed through only one action, the mold structure is simplified, the mold size is reduced, and the mold cost is lowered.

Description

Technical Field

[0001] This invention relates to a mold release structure, and more particularly to a combined release structure for an engine manifold injection mold. Background Technology

[0002] Engine manifold Figure 1 The diagram shows a complex, irregular structure, including four flange ports, one air inlet, and two wiring harness clamps. Engine manifolds are typically manufactured using injection molding. Because engine manifolds have flange ports, the molding components used to form these ports need to be removed during demolding; this is generally referred to as a core-pulling structure. An ejector structure is also required to eject the product during demolding. Currently, the core-pulling and ejector structures in existing engine manifold molding dies are independent, requiring different actions to demold the product. For products requiring multiple sets of core-pulling and angled ejectors, the mold structure is complex and may not be feasible, resulting in large mold sizes and high costs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a combined demolding structure for an engine manifold injection mold. This combined demolding structure integrates the core-pulling structure and the ejection structure into the rear mold B plate, the cavity and the support plate. It can complete the molding of complex product structures and multi-directional demolding in only one action, optimize the mold structure and simplify the demolding operation.

[0004] The technical solution to the above technical problem is: an engine manifold injection mold assembly demolding structure, including a front mold and a rear mold. The front mold includes an A plate and a core installed in the A plate. The rear mold includes a support plate, a B plate and a cavity installed in the B plate. A fixing block is installed on the outside of the support plate, and a B plate cylinder is installed on the outside of the B plate. The B plate cylinder is connected to the fixing block.

[0005] It also includes a core-pulling structure and an ejection structure. The core-pulling structure includes a flange port core-pulling assembly and an air inlet core-pulling assembly. The flange port core-pulling assembly includes a guide plate, four guide seats I, and four core-pulling sliders I for molding the flange port of the product. The core-pulling sliders I pass through the guide plate, and the bottom end of one core-pulling slider I is slidably connected to one guide seat I. The air inlet core-pulling assembly includes a guide block, a core-pulling slider II, and a guide seat II. The core-pulling slider II passes through the guide block and is slidably connected to the bottom guide seat II. The guide plate and the guide block are connected to the B plate, and the guide seats I and II are mounted on the support plate. The ejection structure includes two sets of inclined ejection assemblies. The inclined ejection assembly consists of an inclined ejection guide block, an inclined ejection slider, and an inclined ejection push plate for ejecting the inclined ejection slider. The inclined ejection slider is slidably mounted on the inclined ejection guide block. The inclined ejection push plate is connected to the cavity, and the inclined ejection guide block is mounted on the support plate.

[0006] The A plate is also provided with inclined guide post I, inclined guide post II, front mold inclined ejector assembly, and four forming posts that cooperate with core-pulling slider I. The front mold inclined ejector assembly includes a front mold inclined ejector slider and a reset slider that are fixedly connected to each other. The B plate is also provided with rear mold slider I, rear mold slider II, rear mold slider III, and a hook that cooperates with the reset slider. The outer side of the B plate is also provided with a slider cylinder connected to the rear mold slider III. The rear mold slider I and rear mold slider II have guide post holes. In the closed mold state, the four core-pulling sliders I are in contact with the four forming posts respectively. The core-pulling slider I, the forming posts, the cavity, and the rear mold slider III form a flange tube forming cavity. The inclined guide post I and the inclined guide post II are inserted into the guide post holes of the rear mold slider I and the rear mold slider II respectively. The reset slider is connected to the hook.

[0007] The guide seat I and guide seat II are provided with T-shaped sliding grooves, and the bottom of the core-pulling slider I and core-pulling slider II are provided with T-shaped sliding platforms, which are movably installed in the T-shaped sliding grooves.

[0008] The upper surfaces of guide seat I and guide seat II are provided with inclined surfaces, and core-pulling slider I and core-pulling slider II are respectively inclinedly arranged on guide seat I and guide seat II.

[0009] The inclined top guide block is provided with a T-shaped slide rail, and the inclined top slider has a T-shaped groove. The inclined top slider is movably mounted on the T-shaped slide rail of the inclined top guide block through the T-shaped groove.

[0010] The A plate has an installation groove, and the front mold angled ejector assembly is placed in the installation groove. The bottom ends of the front mold angled ejector slider and the reset slider of the front mold angled ejector assembly are fixedly connected. The front mold angled ejector assembly is located below the core. When the mold is open, the top ends of the front mold angled ejector slider and the reset slider pass through the core. When the mold is closed, the upper end surface of the front mold angled ejector slider is flush with the surface of the core, and the top end of the reset slider 152 extends out of the upper end surface of the core.

[0011] The B-plate has four hydraulic cylinders and four fixing blocks.

[0012] By adopting the above technical solution, the present invention has the following beneficial effects:

[0013] 1. Integrating the core-pulling structure and ejection structure into the B plate, cavity and support plate of the rear mold can ensure the molding of complex product structures and smooth demolding. The molding of complex product structures and multi-directional demolding can be completed in one action, and the demolding action is simple.

[0014] 2. Due to the technological improvement of integrating the core-pulling structure and the ejection structure, the mold structure is simplified, the mold size is reduced, and the mold cost is lowered. Qualified products can be produced using smaller machines, reducing resource waste, lowering the enterprise's product manufacturing costs, and maximizing enterprise profits.

[0015] The technical features of an engine manifold injection mold assembly demolding structure according to the present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 Schematic diagram of engine manifold structure.

[0017] Figure 2 : Front view of an engine manifold injection mold equipped with the combined demolding structure of the present invention.

[0018] Figure 3 Left view of an engine manifold injection mold equipped with the combined demolding structure of the present invention.

[0019] Figure 4 : Front view of the front mold of an engine manifold injection mold equipped with the combined demolding structure of the present invention.

[0020] Figure 5 Left view of the front mold of an engine manifold injection mold equipped with the combined demolding structure of the present invention.

[0021] Figure 6 : Schematic diagram of the structure of the inclined top component of the prior art.

[0022] Figure 7 : A schematic diagram of the inclined mold assembly installed on plate A prior to this invention.

[0023] Figure 8 : A perspective view of the front mold of an engine manifold injection mold equipped with the combined demolding structure of the present invention.

[0024] Figure 9 : Front view of the rear mold of an engine manifold injection mold equipped with the combined demolding structure of the present invention.

[0025] Figure 10 Left view of the rear mold of an engine manifold injection mold equipped with the combined demolding structure of the present invention.

[0026] Figure 11 : Figure 9 AA sectional view.

[0027] Figure 12 : A perspective view of the rear mold of an engine manifold injection mold equipped with the combined demolding structure of the present invention.

[0028] Figure 13 : A three-dimensional view of the core-pulling structure and ejection structure of the present invention.

[0029] Figure 14 : Front view of the core-pulling structure and ejection structure of the present invention.

[0030] Figure 15 Left view of the core-pulling structure and ejection structure of the present invention.

[0031] Figure 16 : Schematic diagram of the guide seat I of the present invention.

[0032] Figure 17 One of the three-dimensional views of the ejector structure of the present invention.

[0033] Figure 18 : Second perspective view of the ejector structure of the present invention.

[0034] Figure 19 : Schematic diagram of the inclined top slider and inclined top push plate structure of the present invention.

[0035] Figure 20 : Schematic diagram of the inclined top guide block structure of the present invention.

[0036] Figure 21 : Figure 12 Enlarged view of part B.

[0037] In the diagram, P1 represents the flange port, P2 represents the air inlet, and P3 represents the wire harness clamp.

[0038] 1-Front mold, 11-A plate, 111-Mounting slot, 12-Hot runner plate, 13-Fixed mold base plate, 14-Core, 15-Front mold angled ejector assembly, 151-Front mold angled ejector slider, 152-Reset slider, 16-Forming pillar, 17-Angled guide pillar I, 18-Angled guide pillar II.

[0039] 2-Rear mold, 21-Moving mold base plate, 22-C plate, 23-Support plate, 24-B plate, 25-Cavity, 26-B plate cylinder, 27-Rear mold slider I, 28-Pull hook, 29-Rear mold slider II, 210-Rear mold slider III, 211-Slider cylinder, 212-Fixing block, 213-Guide post.

[0040] 3-Core pulling structure, 31-Flange pipe core pulling assembly, 311-Guide plate, 312-Core pulling slider I, 313-Guide seat I, 314-T-shaped slide table, 315-T-shaped slide groove, 316-Inclined surface, 32-Air inlet core pulling assembly, 321-Guide block, 322-Core pulling slider II, 323-Guide seat II.

[0041] 4-Ejection structure, 41-Angled top guide block, 411-T-shaped slide, 42-Angled top slider, 421-Slider boss, 422-T-shaped groove, 43-Angled top push plate. Detailed Implementation

[0042] Example 1: An engine manifold injection mold assembly demolding structure integrates the core-pulling structure and the ejection structure into the B plate, cavity and support plate of the rear mold, simplifying the mold structure and reducing the overall size of the mold.

[0043] like Figures 2-21 As shown, the system includes a front mold 1 and a rear mold 2. The front mold 1 includes a fixed mold base plate 13, a hot runner plate 12, an A plate 11, and a core 14 installed within the A plate. The A plate 11 is also provided with inclined guide pillars I 17, inclined guide pillars II 18, a front mold inclined ejector assembly 15, and four forming pillars 16 that cooperate with the core-pulling slider I 312. The front mold inclined ejector assembly 15 includes a front mold inclined ejector slider 151 and a reset slider 152 that are fixedly connected to each other. The A plate 11 has a mounting groove 111, and the front mold inclined ejector assembly 15 is placed in the mounting groove. The bottom ends of the front mold inclined ejector slider 151 and the reset slider 152 of the front mold inclined ejector assembly are fixedly connected. The front mold inclined ejector assembly is located below the core 14, and the top ends of the front mold inclined ejector slider and the reset slider pass through the core. In the closed state, the upper end surface of the front mold inclined ejector slider 151 is flush with the surface of the core 14, and the top end of the reset slider 152 extends out of the upper end surface of the core. The function of the front mold angled ejector assembly 15 is to ensure that the wire harness clamp can be easily demolded when the mold is opened.

[0044] The rear mold includes a moving mold base plate 21, a C plate 22, a support plate 23, a B plate 24, and a cavity 25 installed in the B plate. A fixing block 212 is installed on the outer side of the support plate, and a B plate cylinder 26 is installed on the outer side of the B plate. The B plate cylinder 26 is connected to the fixing block 212. Four B plate cylinders and four fixing blocks 212 are provided, meaning the support plate and the B plate are connected by four fixing blocks and four B plate cylinders. The B plate 24 is also provided with a rear mold slider I 27, a rear mold slider II 29, a rear mold slider III 210, and a hook 28 that cooperates with a reset slider 152. A slider cylinder 211 connected to the rear mold slider III 210 is also provided on the outer side of the B plate. Guide post holes are opened on the rear mold slider I and rear mold slider II. The rear mold slider I 27 is used for forming mounting holes, the rear mold slider II 29 is used for forming sensor mounting holes, and the rear mold slider III 210 is used for forming the external structure of the four flange openings.

[0045] The combined demolding structure also includes a core-pulling structure 3, which comprises a flange port core-pulling assembly 31 and an air inlet core-pulling assembly 32. The flange port core-pulling assembly includes a guide plate 311, four guide seats I 313, and four core-pulling sliders I 312 for molding the flange port of the product. The core-pulling sliders I 312 pass through the guide plate 311, and the bottom end of one core-pulling slider I 312 is slidably connected to one guide seat I 313. The air inlet core-pulling assembly 32 includes a guide block 321, a core-pulling slider II 322, and a guide seat II 323 slidably connected to the bottom end of the core-pulling slider II. The core-pulling slider II 322 passes through the guide block 321. The guide plate 311 and the guide block 321 are connected to plate B 24 and can move together with plate B to provide power for the core-pulling sliders I 312 and II 322. Guide seats I 313 and II 323 are mounted on the support plate 23, allowing the core-pulling sliders I 312 and II 322 to move along a certain linear trajectory. When plate B is pushed by plate B cylinder 26, the support plate 23 remains stationary. The core-pulling structure 3 serves two purposes: first, it acts as a forming component for the flange opening of the product during mold closing, ensuring the forming of complex product structures; second, it allows the core to slide along a predetermined trajectory during mold opening, facilitating demolding.

[0046] The combined demolding structure also includes an ejection structure 4, which comprises two sets of angled ejector assemblies. Each angled ejector assembly consists of an angled ejector guide block 41, an angled ejector slider 42, and an angled ejector push plate 43 for ejecting the angled ejector slider. The angled ejector slider 42 is slidably mounted on the angled ejector guide block 41, which has an angled T-shaped slide rail 411. The angled ejector slider 42 has a T-shaped groove 422, and is movably mounted on the T-shaped slide rail 411 of the angled ejector guide block 41 via the T-shaped groove 422. The angled ejector push plate 43 is connected to the cavity 25, and the angled ejector guide block 41 is mounted on the support plate 23. The angled ejector push plate 43 and the angled ejector slider 42 are in contact; the side of the angled ejector slider 42 has a slider boss 421, and the angled ejector push plate 43 is located below the slider boss 421. The angled ejector push plate 43 can move with the B plate by pushing the slider boss 421, causing the angled ejector slider 42 to shift. The inclined ejector slider 42 extends out of the cavity 25 by being pushed by the inclined ejector push plate 43, and the resetting is achieved by the four B-plate hydraulic cylinders 26 pulling the B-plate cavity back to its original position. The function of the ejection structure is to eject the product according to a predetermined trajectory during demolding.

[0047] In the closed mold state, the four core-pulling sliders I 312 are in contact with the four forming pillars 16 respectively. The core-pulling sliders I 312, the forming pillars 16, the cavity 25, and the rear mold slider III 210 form a flange tube forming cavity. The inclined guide pillars I 17 and II 18 are inserted into the guide pillar holes of the rear mold sliders I 27 and II 29 respectively. The reset slider 152 is connected to the pull hook 28.

[0048] In this embodiment, the hook 28 and the reset slider 152 are general component names in the mold. The hook is a cylindrical structure (e.g., Figure 21 As shown), the reset slider has a plate-like structure with a round hole for connecting to the pull hook (such as...). Figure 6 (As shown). In the closed state, the hook is inserted into the circular hole of the reset slider and connected to the reset slider. When the mold opens, the hook pulls the reset slider upward, and the reset slider 152 drives the front mold inclined ejector slider 151 to push the formed product away from the core 14 of the front mold. The movement distance of the front mold inclined ejector assembly is limited by the core. When its movement reaches the limit distance, the core blocks the movement of the front mold inclined ejector assembly, causing the hook to separate from the reset slider. During the mold closing process, the hook moves upward and connects with the reset slider, pushing the front mold inclined ejector assembly to reset.

[0049] In this embodiment, the guide seats I and II are provided with T-shaped grooves 315, and the bottom ends of the core-pulling sliders I and II are provided with T-shaped sliding platforms 314, which are movably installed in the T-shaped grooves. The movement distance of the sliders is controlled by adjusting the inclination angle and length of the T-shaped grooves. The upper end surfaces of the guide seats I and II are provided with inclined surfaces 316, and the core-pulling sliders I and II are respectively inclinedly arranged on the guide seats I and II.

[0050] The working process of this embodiment:

[0051] 1. The front mold 1 is fixed on the fixed platen of the equipment and remains stationary. The rear mold 2 is fixed on the moving platen of the equipment and moves in the -Z direction to complete the mold opening. At the same time as the mold opens, the rear mold slider I 27 moves in the X direction under the action of the inclined guide post I 17, and the rear mold slider II 29 moves in the -Y direction under the action of the inclined guide post II 18. The rear mold pull hook 28 pulls the front mold reset slider 152, which drives the front mold inclined ejector slider 151 to move in the Y and -Z directions to push the formed product away from the core 14 of the front mold.

[0052] 2. The four B-plate cylinders 26 move simultaneously to push the B-plate 24 of the rear mold to move in the Z direction. The guide plate 311 of the flange pipe core pulling assembly 31, the guide block 321 of the air inlet core pulling assembly 32, and the two inclined push plates 43 of the ejection structure fixed on the cavity 25 move synchronously with the B-plate 24. The four guide seats I 313 of the flange pipe core pulling assembly 31, the guide seat II 323 of the air inlet core pulling assembly 32, and the two inclined push guide blocks 41 of the ejection structure 4 fixed on the support plate 23 do not move. The four core-pulling sliders I 312 of the flange pipe core-pulling assembly move simultaneously in the X and Z directions under the combined action of the guide plate 311 and the guide seat I 313; the core-pulling slider II 322 of the air inlet core-pulling assembly 32 moves in the -XY and Z directions under the combined action of the guide block 321 and the guide seat II 323; the inclined ejector slider 42 of the ejection structure 4 moves in the Y and Z directions under the action of the inclined ejector guide block 41 and the inclined ejector push plate 43; the four core-pulling sliders I 312 of the flange pipe core-pulling assembly, the core-pulling slider II 322 of the air inlet core-pulling assembly 32, and the two inclined ejector sliders 42 of the ejection structure complete the core-pulling and inclined ejection actions. After completing the molding work, each core-pulling slider pulls out the product at the same time as the mold opens, so that the ejection structure can smoothly eject the product out of the cavity.

[0053] 3. The action of the slider cylinder 211 pushes the rear mold slider Ⅲ210 to move in the -X direction. The equipment cylinder pushes the ejector base plate to drive the ejector pin. The ejector pin ejects the product. The product is then manually removed, and the ejector pin retracts.

[0054] 4. The four B-plate cylinders 26 move simultaneously to push the B-plate to move back to its original position in the -Z direction. The guide plate 311 of the flange pipe core pulling assembly fixed on the B-plate 24, the guide block 321 of the air inlet core pulling assembly 32, and the two inclined push plates 43 of the ejection structure fixed on the cavity 25 move synchronously with the B-plate 24. The four guide seats I 313 of the flange pipe core pulling assembly fixed on the support plate 23, the guide seat II 323 of the air inlet core pulling assembly 32, and the two inclined push guide blocks 41 of the ejection structure 4 do not move. The four core-pulling sliders I 312 of the flange pipe core-pulling assembly move simultaneously in the -X and -Z directions under the combined action of the guide plate 311 and the guide seat I 313; the core-pulling slider II 322 of the air inlet core-pulling assembly 32 moves in the -YX and -Z directions under the combined action of the guide block 321 and the guide seat II 323; the inclined push slider 42 of the ejection structure moves in the -Y and -Z directions under the action of the inclined push guide block 41 and the inclined push plate 43; the four core-pulling sliders I 312 of the flange pipe core-pulling assembly, the core-pulling slider II 322 of the air inlet core-pulling assembly 32, and the two inclined push sliders 42 of the ejection structure complete the return action.

[0055] 5. The rear mold is fixed on the moving platen of the equipment and moves to the set position in the Z direction to complete the mold closing. At the same time as the mold closing, the rear mold slider I moves in the -X direction under the action of the inclined guide post I, and the rear mold slider II moves in the Y direction under the action of the inclined guide post II. The pull hook 28 pushes the reset slider 152 of the front mold, which drives the inclined ejector slider 151 of the front mold to move in the -Y and Z directions, and enters the next cycle.

[0056] The X direction, -X direction, Y direction, -Y direction, Z direction, and -Z direction mentioned above are as follows: Figure 2 , Figure 3 As indicated by the annotation in the middle.

Claims

1. A demolding structure for an engine manifold injection mold assembly, comprising a front mold (1) and a rear mold (2), wherein the front mold includes an A plate (11) and a core (14) installed within the A plate, characterized in that: The rear mold includes a support plate (23), a B plate (24), and a cavity (25) installed in the B plate. A fixing block (212) is installed on the outside of the support plate, and a B plate cylinder (26) is installed on the outside of the B plate. The B plate cylinder (26) is connected to the fixing block (212). It also includes a core-pulling structure (3) and an ejection structure (4). The core-pulling structure includes a flange port core-pulling assembly (31) and an air inlet core-pulling assembly (32). The flange port core-pulling assembly includes a guide plate (311), four guide seats I (313), and four core-pulling sliders I (312) for forming the flange port of the product. The core-pulling sliders I pass through the guide plate, and the bottom end of one core-pulling slider I is slidably connected to one guide seat I. The air inlet core-pulling assembly (32) includes a guide block (321), a core-pulling slider II (322), and a guide seat II (323). The core-pulling slider II... The guide plate (311) and guide block (321) are slidably connected to the bottom guide seat II through the guide block. The guide plate (311) and guide block (321) are connected to the B plate (24). The guide seat I (313) and guide seat II (323) are installed on the support plate (23). The ejection structure (4) includes two sets of inclined ejection assemblies. The inclined ejection assembly is composed of an inclined ejection guide block (41), an inclined ejection slider (42), and an inclined ejection push plate (43) for ejecting the inclined ejection slider. The inclined ejection slider is slidably installed on the inclined ejection guide block. The inclined ejection push plate (43) is connected to the cavity (25). The inclined ejection guide block is installed on the support plate (23). The A plate (11) is also provided with inclined guide post I (17), inclined guide post II (18), front mold inclined ejector assembly (15) and four forming posts (16) that cooperate with core-pulling slider I (312). The front mold inclined ejector assembly includes a front mold inclined ejector slider (151) and a reset slider (152) that are fixedly connected to each other. The B plate (24) is also provided with rear mold slider I (27), rear mold slider II (29), rear mold slider III (210) and a pull hook (28) that cooperates with the reset slider. The outer side of the B plate is also provided with a pull hook that cooperates with the rear mold slider. The slider cylinder (211) connected to Ⅲ has guide post holes on the rear mold slider I and rear mold slider II; when the mold is closed, the four core-pulling sliders I (312) contact the four forming posts (16) respectively. The core-pulling sliders I (312), forming posts (16), cavity (25), and rear mold slider III (210) form a flange tube forming cavity. The inclined guide posts I (17) and inclined guide posts II (18) are inserted into the guide post holes of the rear mold sliders I (27) and rear mold slider II (29) respectively. The reset slider (152) is connected to the hook (28).

2. The engine manifold injection mold assembly demolding structure according to claim 1, characterized in that: The guide seat I and guide seat II are provided with T-shaped grooves (315), and the bottom ends of the core-pulling slider I and core-pulling slider II are provided with T-shaped slides (314), which are movably installed in the T-shaped grooves.

3. The engine manifold injection mold assembly demolding structure according to claim 2, characterized in that: The upper surfaces of guide seat I and guide seat II are provided with inclined surfaces (316), and core-pulling slider I and core-pulling slider II are respectively inclinedly arranged on guide seat I and guide seat II.

4. The engine manifold injection mold assembly demolding structure according to any one of claims 1-3, characterized in that: The inclined top guide block (41) is provided with a T-shaped slide (411), and the inclined top slider (42) has a T-shaped groove (422). The inclined top slider (42) is movably installed on the T-shaped slide of the inclined top guide block (41) through the T-shaped groove.

5. The engine manifold injection mold assembly demolding structure according to any one of claims 1-3, characterized in that: The A plate (11) has an installation groove (111), and the front mold inclined ejector assembly (15) is placed in the installation groove. The bottom ends of the front mold inclined ejector slider (151) and the reset slider (152) of the front mold inclined ejector assembly are fixedly connected. The front mold inclined ejector assembly is located below the core (14). When the mold is open, the top ends of the front mold inclined ejector slider and the reset slider pass through the core. When the mold is closed, the upper end face of the front mold inclined ejector slider (151) is flush with the surface of the core (14), and the top end of the reset slider (152) extends out of the upper end face of the core.

6. The engine manifold injection mold assembly demolding structure according to any one of claims 1-3, characterized in that: The B-plate cylinder (26) and the fixing block (212) are each provided with four.

Images