Automobile instrument panel downward demolding mechanism

Abstract

The present invention provides a downward demolding mechanism for an automotive instrument panel, which includes a demolding ejector pin, a top block, a trigger slider slidably connected horizontally to the ejector pin plate, a driving member for driving the trigger slider to slide, and a response slider slidably connected obliquely to the trigger slider; the end of the demolding ejector pin away from the top block is connected to the response slider. After the automotive instrument panel is injection molded, the ejector pin plate is driven by a tool such as an oil cylinder to move towards the mold core side. During this process, the ejector pin provided on the ejector pin plate can eject the injection molded automotive instrument panel from the mold core. At the same time, the driving member is used to control the trigger slider to slide horizontally to one side on the ejector pin plate, and the trigger slider drives the response slider to move towards the bottom plate side in the ejector pin plate. The response slider drives the top block to move towards the mold core side through the demolding ejector pin, so that the top block is separated from the injection molded automotive instrument panel, making it more convenient to pick up the part.

Description

Technical Field

[0001] The invention relates to injection mold accessories, in particular to a descending demoulding mechanism for an automobile instrument panel. Background Art

[0002] Existing car dashboards, such as Figure 1 As shown, the dashboard body 20 includes a plurality of reinforcing ribs on the inner surface. At present, the automotive dashboard is generally produced by injection molding through an injection mold. After the automotive dashboard is injection molded, the molded automotive dashboard needs to be pushed out of the mold core by the ejector block in the injection mold. In this process, if the contact area between the ejector block and the automotive dashboard is large, and there are more glue positions and rib positions formed at the end surface of the ejector block close to the automotive dashboard, the automotive dashboard will stick to the ejector block, which will affect the removal of the parts. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a descending demoulding mechanism for an automobile instrument panel, which has the advantages that an injection-molded automobile instrument panel is not easily adhered to a top block and is convenient to remove.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a descending demolding mechanism for an automobile instrument panel, comprising a demolding ejector connected to an ejector plate, and an ejector block arranged on the end of the demolding ejector, wherein the ejector block is pressed against the inner wall of the injection-molded automobile instrument panel; further comprising a trigger slider connected to the ejector plate in a transverse sliding manner, a driving member for driving the trigger slider to slide, and a response slider connected to the trigger slider in an oblique sliding manner, wherein when the driving member drives the trigger slider to slide transversely on the ejector plate, the trigger slider can drive the response slider to slide vertically in the ejector plate; the end of the demolding ejector away from the ejector block is connected to the response slider.

[0005] Through the above technical solution, after the car dashboard is injection molded, the ejector plate is driven to move toward the mold core by tools such as a cylinder. During this process, the ejector provided on the ejector plate can push the injection molded car dashboard away from the mold core. At the same time, the trigger slider is controlled by the driving member to slide horizontally to one side on the ejector plate, and the trigger slider drives the response slider to move toward the bottom plate in the ejector plate. The response slider drives the ejector block to move toward the mold core through the demoulding ejector pin, so that the ejector block is separated from the injection molded car dashboard, making it more convenient to remove the parts.

[0006] Preferably, a guide slot is provided on the trigger slider, and the guide slot is inclined; a guide slider is provided on the response slider, the guide slider is inserted into the guide slot, and the guide slider is slidably connected to the guide slot.

[0007] Through the above technical solution, the guiding chute and the guiding slider cooperate to limit and guide the sliding direction of the response slider, and at the same time, the cooperation between the guiding chute and the guiding slider can provide the driving force for the response slider to slide.

[0008] Preferably, a through groove is formed on one side of the trigger slider, the through groove penetrates the trigger slider along the mold opening direction of the injection mold, the guiding chute is arranged on the inner groove wall of the through groove, and the response slider is arranged in the through groove.

[0009] Through the above technical solution, the response slider is received inside the through groove. On the one hand, it can reduce the volume of the descending demolding mechanism of the automotive instrument panel. On the other hand, the inner wall of the through groove can abut against the response slider and limit the response slider.

[0010] Preferably, a guiding inclined hole is formed through the trigger slider, and the guiding inclined hole is inclined; the driving member includes a guiding inclined rod, one end of the guiding inclined rod is fixed on the bottom plate of the injection mold, and the other end of the guiding inclined rod passes through the ejector plate and extends into the guiding inclined hole.

[0011] Through the above technical solution, during the process of the ejector plate moving towards the mold core side, the guiding inclined rod passes through the guiding inclined hole, and the guiding inclined rod abuts against the inner hole wall of the guiding inclined hole and drives the trigger slider to move.

[0012] Preferably, a guiding sleeve is fixed inside the guiding inclined hole, the guiding inclined rod passes through the guiding sleeve, and the guiding inclined rod abuts tightly against the inner wall of the guiding sleeve.

[0013] Through the above technical solution, the guiding sleeve arranged inside the guiding inclined hole can, on the one hand, limit and guide the sliding of the guiding inclined rod, and on the other hand, can reduce the contact area with the guiding inclined rod, making the guiding inclined rod not easily worn.

[0014] Preferably, an installation groove is formed at the end face of the trigger slider facing away from the top block, the installation groove communicates with the guiding inclined hole, an installation plate is arranged in the installation groove, the installation plate is fixedly connected with the guiding sleeve, and the installation plate is tightly pressed and connected to the bottom of the installation groove by screws.

[0015] Through the above technical solution, the guiding sleeve is fixed to the trigger slider through the connecting plate, so that the guiding sleeve can be taken out and replaced after severe wear.

[0016] Preferably, there are two demoulding pins, each of which is provided with a cooling channel; a connecting channel is provided on the ejector block, and the connecting channel is respectively connected to the cooling channels in the two demoulding pins; a water inlet is provided on the trigger slider, and the water inlet is communicated with the cooling channel of one of the demoulding pins; the trigger slider is also provided with a water outlet, and the water outlet is communicated with the cooling channel of the other demoulding pin.

[0017] Through the above technical solution, when in use, cooling water is injected from the water inlet through a water pump or other tools, and the cooling water flows through the cooling channel in one ejector pin, the connecting channel and the cooling channel in another ejector pin in turn, and finally discharged from the water outlet. The flowing cooling channel can cool the ejector block, and the continuously cooled ejector block can cool the injection liquid in the mold cavity, so that the automobile dashboard can be cooled and formed more quickly.

[0018] Preferably, the connecting flow channel is bent and arranged inside the top block.

[0019] Through the above technical solution, when cooling water flows through the bent connecting flow channel, the entire top block can be cooled more effectively, so that the injection liquid in the mold cavity can be cooled more quickly to form a car dashboard.

[0020] Preferably, an airbag is provided inside the through groove, and the airbag is located between the trigger slider and the response slider; a plurality of air nozzles are provided at the end surface of the top block away from the trigger slider, and the plurality of air nozzles are expanded toward one side of the trigger slider, and a connecting air channel is provided in the top block, and the connecting air channel is connected to the plurality of air nozzles at the same time; a flow air channel is provided in the demoulding ejector pin, one end of the flow air channel is connected to the connecting air channel, and the other end of the flow air channel is connected to the airbag.

[0021] Through the above technical solution, when the guide inclined rod extends into the guide inclined hole, the response slider squeezes the airbag, so that the air inside the airbag enters the circulation airway, and the air inside the circulation airway flows into the connecting airway. The air inside the connecting airway is ejected through a number of air nozzles and enters between the product and the top block, so as to separate the top block from the product and assist in demolding the product. When closing the mold, the guide inclined rod gradually moves out of the guide inclined hole, and the airbag gradually returns to its original state. In this process, the airbag can suck out the air in the mold cavity, so that the injection liquid can more conveniently enter the mold cavity during the injection molding process.

[0022] The diameter of the air nozzle is expanded toward one side of the ejector plate, so that the nozzle opening is smaller, and the injection liquid in the mold cavity is not easy to enter the air nozzle. At the same time, when the gas leaves the air nozzle, the speed is relatively high, which can exert a greater thrust on the product.

[0023] Since the response slider slides obliquely towards one side of the bottom plate, during the process of the response slider contacting and squeezing the airbag, the response slider can drive the airbag to deform towards one side of the bottom plate. In this way, it is not easy for the deformed airbag to partially enter the space between the fixed mold and the ejector plate. During the ejection process of the product, the ejector plate will be in close contact with the fixed mold. If a part of the airbag enters the space between the fixed mold and the ejector plate after deformation, when this part of the airbag is squeezed by the fixed mold and the ejector plate, it is very likely that it cannot return to its original state due to exceeding the elastic limit, which will greatly affect the service life of the airbag.

[0024] Preferably, a conveyor belt is adhesively attached to the end face of the airbag close to the response slider. A number of transmission teeth are arranged on the surface of the conveyor belt, and a number of driving teeth are arranged on the end face of the response slider close to the airbag. The number of driving teeth meshes with the number of transmission teeth.

[0025] Through the above technical solution, during the process of the response slider sliding obliquely towards one side of the bottom plate, the driving teeth arranged on the response slider can drive the airbag to deform towards one side of the bottom plate through the transmission teeth. In this way, it is not easy for the deformed airbag to enter the space between the fixed mold and the ejector plate. At the same time, the conveyor belt adhesively fixed on the surface of the airbag can also limit the airbag from entering the space between the fixed mold and the ejector plate. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of an automotive instrument panel;

[0027] Figure 2 It is a schematic connection diagram of the first embodiment with the ejector plate and the bottom plate;

[0028] Figure 3 It is a schematic structural diagram of the first embodiment;

[0029] Figure 4 It is an exploded schematic diagram of the first embodiment;

[0030] Figure 5 It is a schematic structural diagram of the trigger slider and the response slider;

[0031] Figure 6 It is a schematic cross-sectional view of the top block;

[0032] Figure 7 It is a schematic cross-sectional view of the second embodiment;

[0033] Figure 8 For Figure 7 The enlarged view of part A.

[0034] Reference numerals: 1, demolding ejector pin; 2, ejector block; 3, trigger slider; 4, driving member; 5, response slider; 6, guiding chute; 7, guiding slider; 8, through slot; 9, guiding inclined hole; 10, guiding inclined rod; 11, guiding sleeve; 12, mounting groove; 13, mounting plate; 14, cooling channel; 15, connecting channel; 16, water inlet; 17, water outlet; 18, ejector plate; 19, bottom plate; 20, instrument panel body; 21, airbag; 22, air nozzle; 23, connecting air duct; 24, flowing air duct; 25, conveyor belt; 26, transmission gear; 27, driving gear. Detailed implementation manners

[0035] The following further details the specific implementation manners of the present invention with reference to the accompanying drawings, so that the technical solutions of the present invention are easier to understand and master.

[0036] Embodiment 1:

[0037] A descending demolding mechanism for an automotive instrument panel, as Figure 2 、 Figure 3 shown, includes a trigger slider 3, a driving member 4, a response slider 5, a demolding ejector pin 1 and an ejector block 2.

[0038] As Figure 2 shown, the trigger slider 3 is slidably connected to the ejector plate 18 of the injection mold, and the sliding direction of the trigger slider 3 is perpendicular to the mold opening direction of the injection mold.

[0039] As Figure 3 、 Figure 4 shown, a through slot 8 is formed on one side of the trigger slider 3, and the through slot 8 penetrates the trigger slider 3 along the mold opening direction of the injection mold. Guiding chutes 6 are formed on two opposite inner groove walls in the through slot 8, the two guiding chutes 6 face each other, and the guiding chutes 6 are inclined.

[0040] As Figure 4 shown, a guiding inclined hole 9 is formed on the side of the trigger slider 3 away from the through slot 8, the guiding inclined hole 9 is inclined, and the distance between the guiding inclined hole 9 and the through slot 8 gradually decreases towards the side of the mold core. A guiding sleeve 11 is arranged inside the guiding inclined hole 9.

[0041] As Figure 2 、 Figure 5 shown, a mounting groove 12 is formed on the end face of the trigger slider 3 close to the ejector plate 18, and the mounting groove 12 communicates with one side of the guiding inclined hole 9. A mounting plate 13 is arranged inside the mounting groove 12, the mounting plate 13 is tightly connected to the bottom of the mounting groove 12 by screws, and one side of the mounting plate 13 is integrally formed with the guiding sleeve 11.

[0042] As Figure 4As shown, the driving member 4 includes a guiding inclined rod 10. One end of the guiding inclined rod 10 is fixed on the bottom plate 19 of the injection mold. The other end of the guiding inclined rod 10 passes through the guiding sleeve 11, and the outer wall of the guiding inclined rod 10 abuts against the inner wall of the guiding sleeve 11.

[0043] The response slider 5 is arranged inside the through groove 8, and the response slider 5 abuts against the end face of the through groove 8 where the guiding chute 6 is arranged. A guiding slider 7 is arranged at the end face of the response slider 5 opposite to the guiding chute 6. The guiding slider 7 is integrally formed with the response slider 5. The guiding slider 7 extends into the guiding chute 6 and is slidably connected with the guiding chute 6.

[0044] As Figure 3 shown, in this embodiment, there are two demolding ejector pins 1. Both of the two demolding ejector pins 1 are arranged on the response slider 5, and both of the two demolding ejector pins 1 are arranged along the mold opening direction of the injection mold.

[0045] The top block 2 is arranged at the end of the demolding ejector pin 1 far away from the response slider 5, and the top block 2 is connected to both of the two demolding ejector pins 1 at the same time.

[0046] As Figure 3 、 Figure 6 shown, a cooling flow channel 14 is provided in each demolding ejector pin 1. The cooling flow channel 14 is arranged along the axial direction of the demolding ejector pin 1; a bent connecting flow channel 15 is arranged inside the top block 2. Both ends of the connecting flow channel 15 penetrate through the end face of the top block 2 close to the demolding ejector pin 1, and both ends of the connecting flow channel 15 are respectively connected to the cooling flow channels 14 in the two demolding ejector pins 1; a water inlet 16 is arranged on the trigger slider 3. The water inlet 16 is communicated with the cooling flow channel 14 of one demolding ejector pin 1. A water outlet 17 is also arranged on the trigger slider 3. The water outlet 17 is communicated with the cooling flow channel 14 of the other demolding ejector pin 1.

[0047] Embodiment Two:

[0048] The difference between Embodiment Two and Embodiment One is that, as Figure 7 、 Figure 8As shown in the figure, an airbag 21 is arranged inside the through groove 8. The airbag 21 is located between the trigger slider 3 and the response slider 5. When the guiding inclined rod 10 extends into the guiding inclined hole 9, the response slider 5 can move towards the airbag 21 and squeeze the airbag 21. A conveyor belt 25 is adhered to the airbag 21 near the response slider 5. The texture of the conveyor belt 25 is harder than that of the airbag 21. A plurality of transmission teeth 26 are arranged on the surface of the conveyor belt 25. The plurality of transmission teeth 26 are evenly distributed along the length direction of the conveyor belt 25. A plurality of driving teeth 27 are arranged at the end face of the response slider 5 close to the airbag 21. The plurality of driving teeth 27 are meshed with the plurality of transmission teeth 26. A plurality of air nozzles 22 are arranged at the end face of the top block 2 away from the trigger slider 3. The plurality of air nozzles 22 are arranged at equal intervals. The air nozzles 22 extend along the axial direction of the demoulding ejector pin 1, and the air nozzles 22 are all expanded in diameter towards the trigger slider 3. A connecting air passage 23 is arranged in the top block 2. The connecting air passage 23 is perpendicular to the air nozzles 22, and the connecting air passage 23 connects all the air nozzles 22 at the same time. A flow-through air passage 24 is arranged in the demoulding ejector pin 1. The flow-through air passage 24 is arranged along the axial direction of the demoulding ejector pin 1, and one end of the flow-through air passage 24 communicates with the connecting air passage 23, and the other end communicates with the airbag 21.

[0049] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A downward demolding mechanism for an automotive instrument panel, comprising a demolding ejector pin (1) connected to an ejector plate (18), and a top block (2) provided at the end of the demolding ejector pin (1), wherein the top block (2) abuts against the inner wall of the injection-molded automotive instrument panel; Characterized in that: It further includes a trigger slider (3) horizontally slidably connected to the ejector plate (18), a driving member (4) for driving the trigger slider (3) to slide, and a response slider (5) obliquely slidably connected to the trigger slider (3). When the driving member (4) drives the trigger slider (3) to slide horizontally on the ejector plate (18), the trigger slider (3) can drive the response slider (5) to slide vertically in the ejector plate (18); the end of the demolding ejector pin (1) away from the top block (2) is connected to the response slider (5); A guiding chute (6) is formed on the trigger slider (3), and the guiding chute (6) is inclined; a guiding slider (7) is provided on the response slider (5), the guiding slider (7) is inserted into the guiding chute (6), and the guiding slider (7) is slidably connected to the guiding chute (6); A through groove (8) is formed on one side of the trigger slider (3), the through groove (8) penetrates the trigger slider (3) along the mold opening direction of the injection mold, the guiding chute (6) is arranged on the inner groove wall of the through groove (8), and the response slider (5) is arranged in the through groove (8); A guiding inclined hole (9) is penetrated through the trigger slider (3), and the guiding inclined hole (9) is inclined; the driving member (4) includes a guiding inclined rod (10), one end of the guiding inclined rod (10) is fixed on the bottom plate (19) of the injection mold, and the other end of the guiding inclined rod (10) passes through the ejector plate (18) and extends into the guiding inclined hole (9); An airbag (21) is arranged inside the through groove (8), and the airbag (21) is located between the trigger slider (3) and the response slider (5); a plurality of air nozzles (22) are arranged at the end face of the top block (2) facing away from the trigger slider (3), the plurality of air nozzles (22) are all expanded in diameter towards one side of the trigger slider (3), a connecting air passage (23) is arranged in the top block (2), and the connecting air passage (23) connects the plurality of air nozzles (22) at the same time; a circulation air passage (24) is arranged in the demolding ejector pin (1), one end of the circulation air passage (24) communicates with the connecting air passage (23), and the other end of the circulation air passage (24) communicates with the airbag (21); A conveyor belt (25) is adhered to the end face of the airbag (21) close to the response slider (5), a plurality of transmission teeth (26) are arranged on the surface of the conveyor belt (25), and a plurality of driving teeth (27) are arranged at the end face of the response slider (5) close to the airbag (21), and the plurality of driving teeth (27) are meshed with the plurality of transmission teeth (26).

2. The downward demolding mechanism for an automotive instrument panel according to claim 1, Characterized in that: A guide sleeve (11) is fixedly installed inside the guide inclined hole (9), and a guide inclined rod (10) passes through the guide sleeve (11), and the guide inclined rod (10) is in tight contact with the inner wall of the guide sleeve (11).

3. The downward demolding mechanism for an automotive instrument panel according to claim 2, wherein: An installation groove (12) is formed in the end face of the trigger slider (3) facing away from the top block (2). The installation groove (12) communicates with the guide inclined hole (9). An installation plate (13) is arranged in the installation groove (12). The installation plate (13) is fixedly connected to the guide sleeve (11), and the installation plate (13) is tightly connected to the bottom of the installation groove (12) by screws.

4. The downward demolding mechanism for an automotive instrument panel according to claim 1, wherein: There are two demolding ejector pins (1), and a cooling flow channel (14) is formed in each demolding ejector pin (1); a connecting flow channel (15) is arranged on the top block (2), and the connecting flow channel (15) is respectively connected to the cooling flow channels (14) in the two demolding ejector pins (1); a water inlet (16) is arranged on the trigger slider (3), and the water inlet (16) communicates with the cooling flow channel (14) of one of the demolding ejector pins (1). A water outlet (17) is also arranged on the trigger slider (3), and the water outlet (17) communicates with the cooling flow channel (14) of the other demolding ejector pin (1).

5. The downward demolding mechanism for an automotive instrument panel according to claim 4, wherein: The connecting flow channel (15) is bent and arranged inside the top block (2).

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