Hood upper cover mold

Abstract

The invention relates to the field of locomotives, in particular to a hood upper cover mold which comprises an upper mold body, a lower mold body, an ejector plate and an ejector part, the upper mold body and the lower mold body are combined to form a cavity, the lower mold body is provided with an ejector opening and an operation opening, the operation opening is formed below the ejector opening, the ejector opening is obliquely formed in the length direction, and the ejector plate is arranged on the ejector opening. The ejector plate slides up and down in the operation opening, the ejector piece comprises a fixed block, a sliding block and an ejector rod, the fixed block is fixedly connected to the upper end of the ejector plate, the sliding block is connected to the fixed block in a sliding mode, the ejector rod is connected to the inner wall of the ejector opening in a sliding mode, and the lower end of the ejector rod is hinged to the sliding block. When the ejector plate slides upwards, the ejector rod slides along the inclined ejector opening, deformation is reduced, and production quality is improved.

Description

Technical Field

[0001] The present application relates to the field of locomotives, and in particular to a head cover mold. Background Art

[0002] The hood cover typically refers to the top cover of a motorcycle's head shell, forming part of the body fairing or protective hood. It is typically made of lightweight, high-strength materials such as ABS engineering plastics, polycarbonate (PC), or carbon fiber composites to meet the performance and cost requirements of different models. The hood cover mold is typically a specialized mold used to produce the upper outer shell of a motorcycle hood (fairing). This mold uses injection molding, stamping, or composite molding processes. Injection molding is suitable for the high-precision and high-efficiency production of ABS or PC plastic parts in large quantities.

[0003] In actual production, existing hood cover molds often face the problem of difficulty in demolding. Specifically, the molded plastic parts are easily stuck in the mold cavity, resulting in a sticking phenomenon. During demolding, the ejector rod is easy to push the hood cover out and deform it. The hood cover is unevenly stressed, causing the thin-walled area to warp or even crack, resulting in reduced production quality. Summary of the Invention

[0004] In order to improve production quality, the present application provides a head cover mold.

[0005] The hood cover mold provided in this application adopts the following technical solution: A head cover mold comprises an upper mold, a lower mold, a ejection plate and an ejection piece. The upper mold and the lower mold are combined to form a cavity. The lower mold is provided with an ejection port and an operation port. The operation port is provided below the ejection port. The length direction of the ejection port is inclined. The ejection plate slides up and down in the operation port. The ejection piece comprises a fixed block, a sliding block and an ejection rod. The fixed block is fixedly connected to the upper end of the ejection plate, the sliding block is slidably connected to the fixed block, the ejection rod is slidably connected to the inner wall of the ejection port, and the lower end of the ejection rod is hinged to the sliding block.

[0006] By adopting the above technical solution, when the ejection plate slides upward, the ejection rod slides along the inclined ejection opening, thereby reducing deformation and improving production quality.

[0007] Preferably, there are multiple ejection openings, and the ejection pieces are arranged in one-to-one correspondence with the ejection openings.

[0008] By adopting the above technical solution, multiple ejector rods jointly eject the material, reducing the deformation of the head cover caused by uneven force and improving production quality.

[0009] Preferably, an air outlet is provided at the upper end of the lower mold, and the air outlet is used to spray gas.

[0010] By adopting the above technical solution, gas is injected at the moment of mold opening to initially separate the upper cover of the hood from the lower mold, thereby reducing the sticking film phenomenon and improving production quality.

[0011] Preferably, it also includes an airbag, the lower mold is provided with a mounting cavity, the outer wall of the lower mold is provided with an air inlet hole, the air inlet hole and the air outlet hole are both connected to the mounting cavity, the airbag is arranged in the mounting cavity, the airbag is provided with a first bag nozzle and a second bag nozzle, the first bag nozzle is fixedly connected to the inner wall of the air inlet hole, the second bag nozzle is fixedly connected to the inner wall of the air outlet hole, the inner wall of the first bag nozzle is fixedly connected with a first one-way valve, the inner wall of the second bag nozzle is fixedly connected with a second one-way valve, the control component is fixedly connected to the inner wall of the air outlet hole, and the control component is used to control the on and off of the air outlet hole.

[0012] By adopting the above technical solution, the gas temperature rises during injection molding, which increases the gas pressure in the airbag. When the upper mold and the lower mold are separated, the air outlet opens and the gas is discharged, causing the head cover to be initially separated from the lower mold, reducing the sticking film phenomenon and improving production quality.

[0013] Preferably, it further includes a push plate, the air inlet is connected to the ejection port, the push plate is arranged below the airbag, and the push plate is fixedly connected to the outer wall of the ejection rod.

[0014] By adopting the above technical solution, when the ejector rod slides upward to eject the material, the push plate moves upward to squeeze the airbag, allowing the airbag to further release air, facilitating the initial separation of the hood upper cover and the lower mold, and improving the demoulding efficiency and demoulding quality.

[0015] Preferably, the control component includes a limiting ring, a sealing plate, a spring and a magnet, the limiting ring is fixedly connected to the inner wall of the air outlet, the sealing plate is slidably connected to the inner wall of the limiting ring, the outer wall of the sealing plate is fixedly connected with a contact block, the contact block is arranged below the limiting ring, the contact block is slidably connected to the inner wall of the air outlet, the spring is arranged between the contact block and the airbag, one end of the spring is fixedly connected to the inner wall of the air outlet, the other end of the spring is fixedly connected to the contact block, the sealing plate is set as a metal plate, and the magnet is fixedly connected to the upper mold.

[0016] By adopting the above technical solution, when the upper mold and the lower mold are closed, the magnet attracts the sealing plate, overcomes the spring force, and the sealing plate slides into the limit ring to seal the vent and prevent the injection liquid from entering the vent. When the upper mold is away from the lower mold, the spring tension makes the sealing plate move away from the limit ring, and the vent is exhausted.

[0017] Preferably, the lower mold is provided with a liquid storage chamber, a transition chamber and a cooling channel, the two ends of the cooling channel are respectively connected to the liquid storage chamber and the transition chamber, the piston is slidably connected to the inner wall of the transition chamber, the piston is provided with a flow port, the inner wall of the flow port is fixedly connected to a third one-way valve, and the two ends of the cooling channel are respectively provided on both sides of the piston.

[0018] By adopting the above technical solution, after injection molding, the temperature of the liquid in the cooling channel increases. When the upper mold moves away from the lower mold, the piston slides downward, and the liquid with a lower temperature in the cooling channel enters the transition chamber, and the liquid in the transition chamber enters the liquid storage chamber. The liquid with a lower temperature in the liquid storage chamber enters the cooling channel, thereby achieving rapid heat dissipation, reducing adhesion between the injection molded part and the lower mold, and improving production quality.

[0019] Preferably, the lower mold is provided with a sliding port, the sliding port is connected to the air outlet and the transition cavity, the two ends of the sliding rod are fixedly connected to the abutment block and the piston respectively, and the sliding rod is slidably connected to the inner wall of the sliding port.

[0020] By adopting the above technical solution, when the upper mold moves away from the lower mold, the abutment block slides downward, the sliding rod slides downward synchronously, and the piston moves synchronously, which facilitates automatic liquid replacement in the cooling channel.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. When the ejector plate slides upward, the ejector rod slides along the inclined ejector port, reducing deformation and improving production quality; 2. During injection molding, the gas temperature rises, which increases the gas pressure in the airbag. When the upper mold and the lower mold separate, the vent opens and the gas is discharged, which causes the upper cover of the hood to be initially separated from the lower mold, reducing the sticking phenomenon and improving production quality. 3. After injection molding, the temperature of the liquid in the cooling channel rises. When the upper mold moves away from the lower mold, the piston slides downward, and the liquid with a lower temperature in the cooling channel enters the transition chamber, and the liquid in the transition chamber enters the liquid storage chamber. The liquid with a lower temperature in the liquid storage chamber enters the cooling channel, achieving rapid heat dissipation, reducing adhesion between the injection molded part and the lower mold, and improving production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic diagram of the overall structure of a hood upper cover mold.

[0023] Figure 2 It is a cross-sectional view of a hood cover mold.

[0024] Figure 3 It is a cross-sectional view of the lower mold, ejector plate, ejector component, airbag, control component, push plate and heat sink.

[0025] Figure 4 It is a schematic diagram of the overall structure of the top material.

[0026] Figure 5 yes Figure 3 Enlarged view of point A in the middle.

[0027] Explanation of Reference Numerals: 1. Upper mold; 11. Cavity; 12. Injection port; 2. Lower mold; 21. Ejection port; 22. Operation port; 221. Installation port; 23. Air outlet; 24. Installation cavity; 25. Air inlet; 26. Liquid storage cavity; 27. Transition cavity; 28. Cooling channel; 281. Fourth one-way valve; 29. ​​Sliding port; 3. Ejection plate; 4. Ejection member; 41. Fixing block; 411. Fixing groove; 412. Sliding groove; 42. Sliding block; 43. Ejector rod; 5. Air bag; 51. First bag mouth; 52. Second bag mouth; 53. First one-way valve; 54. Second one-way valve; 6. Control component; 61. Limiting ring; 62. Sealing plate; 621. Abutment block; 622. First sealing ring; 63. Spring; 64. Magnet; 7. Push plate; 8. Heat sink; 81. Piston; 811. Flow port; 812. Third one-way valve; 82. Sliding rod; 821. Second sealing ring; 83. Heat sink. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-5 This application is described in further detail.

[0029] The embodiment of the present application discloses a head cover mold. Figure 1 and Figure 2 A head cover mold includes an upper mold 1, a lower mold 2, a top plate 3 and a top piece 4.

[0030] Reference Figure 2 and Figure 3 The upper mold 1 and the lower mold 2 are combined to form a cavity 11. The upper mold 1 is provided with an injection port 12, and the injection port 12 is connected to the cavity 11. The lower mold 2 is provided with a ejection port 21 and an operation port 22. The ejection port 21 is connected to the cavity 11 and the operation port 22. The operation port 22 is provided below the ejection port 21. The ejection port 21 is inclined in the longitudinal direction. The ejection plate 3 slides up and down in the operation port 22. There are multiple ejection ports 21, and the ejection parts 4 are provided in a one-to-one correspondence with the ejection ports 21.

[0031] Reference Figure 3 and Figure 4 The ejecting member 4 includes a fixed block 41, a sliding block 42 and a ejecting rod 43. The fixed block 41 is fixedly connected to the upper end of the ejecting plate 3. The upper end of the fixed block 41 is provided with a fixed groove 411. The length direction of the fixed groove 411 is horizontal. The fixed groove 411 extends to both ends to pass through the fixed block 41. The two opposite groove walls of the fixed groove 411 are provided with sliding grooves 412. The two ends of the sliding block 42 are respectively slidably connected to the groove walls of the two sliding grooves 412. The ejecting rod 43 is slidably connected to the inner wall of the ejecting port 21. The lower end of the ejecting rod 43 is hinged to the sliding block 42. The hinge axis of the ejecting rod 43 and the sliding block 42 is horizontal and perpendicular to the length direction of the fixed groove 411.

[0032] Reference Figure 5The upper end of the lower mold 2 is provided with an air outlet 23, which is used to spray gas. There are multiple air outlet holes 23, and the air outlet holes 23 are arranged in a one-to-one correspondence with the ejection port 21. The lower mold 2 is provided with a mounting cavity 24, and there are multiple mounting cavities 24, which are arranged in a one-to-one correspondence with the air outlet holes 23. The outer wall of the lower mold 2 is provided with an air inlet hole 25, which is connected to the ejection port 21, and the air inlet hole 25 and the air outlet hole 23 are both connected to the mounting cavity 24.

[0033] A head cover mold further includes an airbag 5, a control member 6, a push plate 7, and a heat sink 8. The airbag 5 is disposed within the mounting cavity 24 and is provided with a first bag mouth 51 and a second bag mouth 52. The first bag mouth 51 is fixedly connected to the inner wall of the air outlet 23, and the second bag mouth 52 is fixedly connected to the inner wall of the air inlet 25. A first one-way valve 53 is fixedly connected to the inner wall of the first bag mouth 51, which allows the airbag 5 to exhaust air in a one-way manner. A second one-way valve 54 is fixedly connected to the inner wall of the second bag mouth 52, which allows air to enter the airbag 5 in a one-way manner. The control member 6 is fixedly connected to the inner wall of the air outlet 23 and is disposed above the first bag mouth 51. The control member 6 is used to control the opening and closing of the air outlet 23.

[0034] Reference Figure 2 and Figure 5 The control component 6 includes a limiting ring 61, a sealing plate 62, a spring 63 and a magnet 64. The limiting ring 61 is fixedly connected to the inner wall of the air outlet 23, and the sealing plate 62 is slidably connected to the inner wall of the limiting ring 61. The outer wall of the sealing plate 62 is fixedly connected to a first sealing ring 622, and the first sealing ring 622 is used to abut the inner wall of the limiting ring 61. The upper surfaces of the limiting ring 61 and the upper surfaces of the blocking plate 62 are both used to enclose the molding cavity 11. The outer wall of the blocking plate 62 is fixedly connected to an abutment block 621, which is located below the first sealing ring 622 and below the limiting ring 61. There are multiple abutment blocks 621, which are evenly spaced around the axis of the blocking plate 62. The abutment blocks 621 are slidably connected to the inner wall of the air outlet 23. A spring 63 is located between the abutment block 621 and the airbag 5. One end of the spring 63 is fixedly connected to the inner wall of the air outlet 23, and the other end of the spring 63 is fixedly connected to the abutment block 621. The blocking plate 62 is configured as a metal plate, and the magnet 64 is fixedly connected to the upper mold 1. The push plate 7 is located below the airbag 5 and is fixedly connected to the outer wall of the ejector rod 43.

[0035] Reference Figure 3 and Figure 5The heat sink 8 includes a piston 81, a sliding rod 82 and a heat sink 83. The lower mold 2 is provided with a liquid storage chamber 26, a transition chamber 27 and a cooling channel 28. The liquid storage chamber 26 is provided below the mounting chamber 24, and the liquid storage chamber 26 is provided close to the operating port 22. The transition chamber 27 is provided above the liquid storage chamber 26. The two ends of the cooling channel 28 are respectively connected to the lower end of the liquid storage chamber 26 and the upper end of the transition chamber 27. The inner walls at both ends of the cooling channel 28 are fixedly connected with a fourth one-way valve 281. The fourth one-way valve 281 allows the liquid to flow from the liquid storage chamber 26 to the cooling channel 28 in one direction, and the liquid in the cooling channel 28 flows in one direction to the transition chamber 27.

[0036] Reference Figure 5 The piston 81 is slidably connected to the inner wall of the transition chamber 27 and is provided with a flow port 811. A third one-way valve 812 is fixedly connected to the inner wall of the flow port 811. The lower mold 2 is provided with a sliding port 29, which communicates with the air outlet 23 and the transition chamber 27. The ends of the sliding rod 82 are fixedly connected to the abutment block 621 and the piston 81, respectively. The sliding rod 82 is slidably connected to the inner wall of the sliding port 29. The outer wall of the sliding rod 82 is coaxially fixedly connected to a second sealing ring 821. There are multiple second sealing rings 821, which are vertically arranged along the length of the sliding rod 82. The cooling channel 28 is spirally wound around the ejection port 21 and the outer periphery of the airbag 5.

[0037] Reference Figure 3 A mounting opening 221 is provided on the inner wall of the operation opening 22 facing downward, and the heat dissipation plate 83 is fixedly connected to the inner wall of the mounting opening 221 . The heat dissipation plate 83 is provided directly below the liquid storage cavity 26 .

[0038] The implementation principle of a head cover mold in the embodiment of the present application is as follows: when injection molding is required, the upper mold 1 and the lower mold 2 are closed, the magnet 64 attracts the sealing plate 62 so that the sealing plate 62 overcomes the elastic force of the spring 63 to block the air outlet 23, the first sealing ring 622 seals the sealing plate 62 and the limiting ring 61, the injection liquid enters the cavity 11, the gas temperature in the airbag 5 increases, the air pressure increases, and the abutment block 621 is pushed tightly against the limiting ring 61, the coolant in the cooling channel 28 absorbs heat and the temperature increases, the mold is opened after injection molding, the upper mold 1 and the lower mold 2 are separated, the spring 63 elastic force causes the sealing plate 62 to move downward, the gas is ejected outward from between the two adjacent abutment blocks 621, and the piston 81 moves downward to allow the cooling flow The liquid in the channel 28 moves to the transition chamber 27, and the liquid in the liquid storage chamber 26 moves to the cooling channel 28, quickly dissipating heat to the lower mold 2, reducing adhesion between the injection molded part and the lower mold 2, and facilitating subsequent demolding. The ejector rod 43 moves upward, and the push plate 7 further squeezes the airbag 5, so that the gas in the airbag 5 is discharged from the air outlet 23, assisting the demolding of the injection molded part. When the ejector rod 43 is reset, the airbag 5 expands, and outside air enters the airbag 5, quickly replacing the gas in the airbag 5. When the upper mold 1 and the lower mold 2 are closed for the next time, the sealing plate 62 moves upward, the piston 81 moves upward, and the third one-way valve 812 causes the liquid in the transition chamber 27 to move to the liquid storage chamber 26, and the liquid in the liquid storage chamber 26 quickly dissipates heat through the heat dissipation plate 83.

[0039] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A head cover mold, characterized by: The invention comprises an upper mold (1), a lower mold (2), a ejection plate (3) and an ejection member (4), wherein the upper mold (1) and the lower mold (2) are combined to form a cavity (11), the lower mold (2) is provided with an ejection port (21) and an operating port (22), the operating port (22) is provided below the ejection port (21), the ejection port (21) is inclined in the longitudinal direction, the ejection plate (3) slides up and down in the operating port (22), the ejection member (4) comprises a fixed block (41), a sliding block (42) and an ejection rod (43), the fixed block (41) is fixedly connected to the upper end of the ejection plate (3), the sliding block (42) is slidably connected to the fixed block (41), the ejection rod (43) is slidably connected to the inner wall of the ejection port (21), and the lower end of the ejection rod (43) is hinged to the sliding block (42).

2. The head cover mold according to claim 1, characterized in that: There are a plurality of ejection openings (21), and the ejection members (4) are arranged in a one-to-one correspondence with the ejection openings (21).

3. The head cover mold according to claim 1, characterized in that: An air outlet (23) is provided at the upper end of the lower mold (2), and the air outlet (23) is used for ejecting gas.

4. The head cover mold according to claim 3, characterized in that: The airbag (5) is also included. The lower mold (2) is provided with a mounting cavity (24). The outer wall of the lower mold (2) is provided with an air inlet hole (25). The air inlet hole (25) and the air outlet hole (23) are both connected to the mounting cavity (24). The airbag (5) is arranged in the mounting cavity (24). The airbag (5) is provided with a first bag nozzle (51) and a second bag nozzle (52). The first bag nozzle (51) is fixedly connected to the inner wall of the air inlet hole (25). The second bag nozzle (52) is fixedly connected to the inner wall of the air outlet hole (23). The inner wall of the first bag nozzle (51) is fixedly connected to a first one-way valve (53). The inner wall of the second bag nozzle (52) is fixedly connected to a second one-way valve (54). The control component (6) is fixedly connected to the inner wall of the air outlet hole (23). The control component (6) is used to control the opening and closing of the air outlet hole (23).

5. The head cover mold according to claim 4, characterized in that: It also includes a push plate (7), the air inlet (25) is connected to the ejection port (21), the push plate (7) is arranged below the airbag (5), and the push plate (7) is fixedly connected to the outer wall of the ejection rod (43).

6. The head cover mold according to claim 4, characterized in that: The control member (6) includes a limiting ring (61), a blocking plate (62), a spring (63) and a magnet (64), wherein the limiting ring (61) is fixedly connected to the inner wall of the air outlet (23), the blocking plate (62) is slidably connected to the inner wall of the limiting ring (61), the outer wall of the blocking plate (62) is fixedly connected to a contact block (621), the contact block (621) is arranged below the limiting ring (61), the contact block (621) is slidably connected to the inner wall of the air outlet (23), the spring (63) is arranged between the contact block (621) and the airbag (5), one end of the spring (63) is fixedly connected to the inner wall of the air outlet (23), and the other end of the spring (63) is fixedly connected to the contact block (621), the blocking plate (62) is set as a metal plate, and the magnet (64) is fixedly connected to the upper mold (1).

7. The head cover mold according to claim 6, characterized in that: The lower mold (2) is provided with a liquid storage chamber (26), a transition chamber (27) and a cooling channel (28), the two ends of the cooling channel (28) are respectively connected to the liquid storage chamber (26) and the transition chamber (27), the piston (81) is slidably connected to the inner wall of the transition chamber (27), the piston (81) is provided with a flow port (811), the inner wall of the flow port (811) is fixedly connected to a third one-way valve (812), and the two ends of the cooling channel (28) are respectively provided on both sides of the piston (81).

8. The head cover mold according to claim 7, characterized in that: The lower mold (2) is provided with a sliding opening (29), the sliding opening (29) is connected to the air outlet (23) and the transition cavity (27), the two ends of the sliding rod (82) are fixedly connected to the abutment block (621) and the piston (81), respectively, and the sliding rod (82) is slidably connected to the inner wall of the sliding opening (29).

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