A demoulding device and method for injection molding mold of automobile parts plastic parts

Abstract

The invention discloses a demoulding device and method for an injection molding mold for automobile parts and plastic components, and relates to the technical field of injection molding production, comprising a lower mold; a jacking structure is fixedly arranged at the bottom of the lower mold; an upper mold is arranged on the top of the lower mold, and a self-circulating cooling type high-temperature resistant oil cylinder structure of the jacking structure is arranged to avoid damage to the oil cylinder sealing ring, leakage of hydraulic oil, damage to the oil cylinder and failure of the jacking structure when used in a high-temperature environment; an injection port structure is arranged at the top of the upper mold to achieve vibration in the vertical dimension after reducing the mold clamping pressure, reduce the phenomenon of cross-cutting damage to the injection molded product by the upper and lower mold bodies of the mold caused by vibration, and adopt air pressure and vibration dual methods to demould, thereby improving the separation effect of the plastic part and the mold, and effectively improving the processing efficiency of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding production, in particular to a demoulding device and method for an injection molding mold of a plastic part of an automobile component. Background Art

[0002] Plastic parts for automobiles refer to various parts made of plastic materials in automobile manufacturing. They are usually light, easy to process, and flexible in design. Most of them are cast using injection molding machines and molds. The working principle of an injection molding machine is similar to that of a syringe for injections. It uses the thrust of a screw (or plunger) to inject plasticized molten (i.e., viscous) plastic into a mold.

[0003] During the demolding process, most equipment and methods use the overall vibration of the mold for demolding, which causes damage to the upper and lower mold bodies of the mold due to vibration. At the same time, the vibration displacement of the upper and lower mold bodies of the mold also causes part of the surface area of ​​the finished product to adhere to the mold, and the surface structure of the finished product will also be severely damaged. At the same time, the existing equipment needs to open a flow channel on the side of the mold to exhaust gas, which causes material accumulation on the surface of the injection molded product and affects the surface quality of the injection molded product. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a demoulding device and method for an injection molding mold of an automobile component plastic part.

[0005] The present invention is implemented in this way: a demoulding device and method for an injection molding mold for automobile parts plastic parts is constructed, the device comprises a lower mold; a lifting structure is fixedly arranged at the bottom of the lower mold; an upper mold is arranged on the top of the lower mold; cooling channels for cooling are arranged inside the lower mold and the upper mold; an injection port structure is fixedly installed on the top of the upper mold.

[0006] The injection port structure includes a fixed lower cylinder which is plugged and fixedly installed at the feed port at the top of the upper mold; a circular conical air hole is arranged inside the fixed lower cylinder; a sealing flow channel is slidably arranged at the center hole of the fixed lower cylinder; a fixed upper cylinder is fixedly installed on the top of the fixed lower cylinder by a screw; an electric vibration component is fixedly installed on the outer side of the fixed upper cylinder by bolts; and a hollow cylinder is fixedly installed at the center hole of the fixed upper cylinder.

[0007] Preferably, the hollow cylinder comprises a pressure valve which is plugged and fixedly installed on the back of the fixed upper cylinder for controlling the air pressure; and a pressure ring is provided inside the fixed upper cylinder for sealing.

[0008] Preferably, a heat-insulating sleeve is sealed and connected to the center hole of the pressure ring; and a clamping flow channel is slidably sleeved inside the heat-insulating sleeve.

[0009] Preferably, the electric vibration component includes a horizontal plate that is plugged and fixedly installed at the top screw groove of the engaging flow channel; a pitch-adjusting screw is slidably connected to the front and rear through holes of the horizontal plate; the rod body of the pitch-adjusting screw is divided into a layered rod structure of an upper smooth rod and a lower screw groove rod, and the length of the upper smooth rod of the pitch-adjusting screw is the same as the thickness of the horizontal plate; the bottom of the pitch-adjusting screw is threadedly connected to the top screw groove of the magnetic isolation sleeve; the upper end of the pitch-adjusting screw is rotatably connected to the top hole groove of the horizontal plate.

[0010] Preferably, a pulse controller with current control function is fixedly installed on the front and rear sides of the magnetic isolation sleeve by bolts; an electromagnetic spring is fixedly installed inside the magnetic isolation sleeve, and the top of the electromagnetic spring is fixedly installed on the front and rear sides of the bottom of the cross plate.

[0011] Preferably, a detector with a temperature detection function is arranged on the side of the fixed upper cylinder; and a colloid coating for sealing is arranged at the connection between the fixed lower cylinder and the fixed upper cylinder.

[0012] Preferably, the lifting structure includes a cylinder seat fixedly mounted on the bottom of the lower mold; a water jacket for cooling is arranged inside the cylinder seat; a heat insulation plate with a heat insulation function is fixedly arranged at the fixing position between the top of the cylinder seat and the bottom of the lower mold; a cylinder with a lifting function is fixedly mounted on the bottom of the cylinder seat; a sealing ring is sleeved on the outer side of the piston rod at the top of the cylinder, and the sealing ring is fixedly arranged in a groove inside the cylinder seat; a lifting head is fixedly inserted at the top end of the cylinder piston rod, and the lifting head is slidably arranged at the bottom opening of the lower mold; the surface of the lifting head is coated with a ceramic coating.

[0013] A method for using a demoulding device for an injection molding mold of an automobile component plastic part comprises the following steps:

[0014] Step 1: When performing injection molding, first apply a release agent for demoulding to the inner cavity of the lower mold and the upper mold. Here, the lower mold and the upper mold together constitute a complete mold of the quick demoulding mechanism of the injection molding machine, and are externally connected to the injection molding machine through the injection port structure on the top of the upper mold; the injection molding raw material is guided through the injection port structure on the top of the upper mold, and the injection molding raw material flows into the cavity between the lower mold and the upper mold through the clamping flow channel and the sealing flow channel, and is filled with high-temperature molten plastic;

[0015] Step 2: At this time, the air inside the lower mold and the upper mold is squeezed and flows into the inner cavity of the pressure ring through the tapered air hole. The pressure in the inner cavity of the pressure ring gradually increases. At this time, the internal pressure of the pressure ring is blocked or released by starting and stopping the pressure valve, so that the internal pressure of the pressure ring is maintained at a certain pressure. When the molten plastic gradually fills the entire mold from bottom to top, the atomized gas with a release agent is introduced into the pressure ring through the pressure valve. The internal air pressure of the pressure ring and the tapered air hole is adjusted to form a high-heat air film at the opening of the upper mold and the tapered air hole to prevent the molten plastic from being squeezed into the tapered air hole. At the same time, the tapered air hole and the air hole structure of the pressure ring are set at the injection port to reduce the flow channel opening and avoid excessive waste accumulation on the mold surface.

[0016] Step 3. During the injection molding process, the electromagnetic spring is provided with a pulse current by controlling the pulse controller, so that the electromagnetic spring is energized to drive the horizontal plate to vibrate up and down. At this time, the pitch-adjusting screw is rotated to quantitatively rotate out of the screw groove of the magnetic isolation sleeve. The horizontal plate is adjusted here to stop squeezing the top of the magnetic isolation sleeve, so that there is a gap between the horizontal plate and the magnetic isolation sleeve, thereby changing the vibration activity stroke between the horizontal plate and the magnetic isolation sleeve, thereby changing the vibration amplitude of the horizontal plate and the engaging flow channel, and accelerating the flow rate of the molten plastic through vibration; after the injection molding work is completed, the molten plastic is quickly cooled through the cooling flow channel cavity on the side of the lower mold and the upper mold, and the demolding work begins;

[0017] Step 4: First, the temperature inside the pressure ring is detected by a detector arranged on the side of the pressure ring. After the pressure ring is cooled to below the melting point, gas is introduced through the pressure valve to gradually increase the pressure inside the pressure ring, so that the fluid with the release agent inside the pressure ring flows out and is introduced into the cavities of the lower mold and the upper mold. The ejected gas gradually covers the entire outer surface of the injection molded product, and at the same time, the entire injection molded product is effectively peeled off from the lower mold and the upper mold, thereby improving the surface integrity of the finished product when demolding;

[0018] Step 5, then control the mold pressure between the lower mold and the upper mold to gradually decrease, the air mold on the surface of the injection molded product will gradually disappear, and at the same time, the pulse controller is controlled to provide a pulse current to the electromagnetic spring, so that the electromagnetic spring is energized to drive the cross plate and the clamping flow channel and the sealing flow channel to vibrate up and down, so that the sealing flow channel vibrates slightly downward and hits the injection molded product, cooperating with the demoulding action of the gas inside the pressure ring;

[0019] Step 6. While the control terminal gradually reduces the clamping pressure between the lower mold and the upper mold, the lower mold, the upper mold and the injection molded product will be initially demolded due to the gas blown out by the pressure ring. Then the hydraulic oil is slowly introduced into the cylinder so that the top piston rod drives the lifting head to move upward and lift the injection molded product. At the same time, the self-circulating cooling structure of the cylinder seat and the water jacket is realized through the flow port on the side of the cylinder seat to block the heat conduction between the lower mold and the upper mold during the injection molding process, and avoid the use of the cylinder at high temperature, which will damage the sealing ring, leak the hydraulic oil, and damage the cylinder.

[0020] The present invention has the following advantages: The present invention provides a demoulding device and method for an injection molding mold of a plastic part of an automobile component by improvement, which has the following improvements compared with the same type of equipment:

[0021] The demolding device and method of the injection molding mold for automobile parts plastic parts described in the present invention, by setting a self-circulating cooling type high-temperature resistant oil cylinder structure of the jacking structure, avoid using it in a high-temperature environment, which may cause damage to the oil cylinder seal ring, hydraulic oil leakage, damage to the oil cylinder and cause failure of the jacking structure; by setting the injection port structure at the top of the upper mold, it is realized that vibration is performed in the vertical dimension after reducing the mold clamping pressure, thereby reducing the cross-cutting damage of the upper and lower mold bodies of the mold to the injection molded product caused by vibration, and the demolding is performed by a dual method of air pressure and vibration, which can improve the separation effect of the plastic part and the mold while effectively stirring the molten plastic, thereby accelerating its flow rate, making the plastic fill the mold cavity more evenly, and reducing defects such as insufficient filling or bubbles; by setting an air hole structure at the injection port to reduce the flow channel opening, while avoiding excessive waste accumulation on the mold surface, it can also promote the airflow to cover the surface of the injection molded product to form an air film, effectively peeling off the adhesion between the product and the mold, reducing demolding resistance, and improving demolding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the exploded structure of the lower mold and the upper mold of the present invention;

[0024] Figure 3 It is a schematic diagram of the decomposed structure of the injection port structure of the present invention;

[0025] Figure 4 It is a schematic cross-sectional view of the injection port structure of the present invention;

[0026] Figure 5 is a schematic cross-sectional view of the electric vibration assembly of the present invention;

[0027] Figure 6 It is a schematic cross-sectional view of the jacking structure of the present invention.

[0028] Among them: lower mold-1, lifting structure-2, upper mold-3, cooling channel-4, injection port structure-5, cylinder seat-21, water jacket-22, heat insulation plate-23, cylinder-24, sealing ring-25, lifting head-26, fixed lower cylinder-51, conical air hole-52, sealing channel-53, fixed upper cylinder-54, electric vibration component-55, hollow cylinder-56, cross plate-551, pitch adjusting screw-552, magnetic isolation sleeve-553, pulse controller-554, electromagnetic spring-555, pressure valve-561, pressure ring-562, heat insulation sleeve-563, and locking channel-564. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 to Figure 6 The principles and features of the present invention are described, and the examples given are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of the embodiments of the present invention based on its overall structure.

[0032] Embodiment 1:

[0033] See also Figure 1 to Figure 6The demoulding device and method of the injection molding mold of a plastic part of an automobile component of the present invention include a lower mold 1; an upper mold 3 is arranged on the top of the lower mold 1; cooling channels 4 for cooling are arranged inside the lower mold 1 and the upper mold 3; an injection port structure 5 is fixedly installed on the top of the upper mold 3.

[0034] The injection port structure 5 includes a fixed lower cylinder 51 which is plugged and fixedly installed at the top feed port of the upper mold 3; a circular conical air hole 52 is arranged inside the fixed lower cylinder 51; a sealing flow channel 53 is slidably arranged at the center hole of the fixed lower cylinder 51; a fixed upper cylinder 54 is fixedly installed on the top of the fixed lower cylinder 51 by a screw; an electric vibration component 55 is fixedly installed on the outer side of the fixed upper cylinder 54 by bolts; a hollow cylinder 56 is fixedly installed at the center hole of the fixed upper cylinder 54; a detector with a temperature detection function is arranged on the side of the fixed upper cylinder 54; a colloid coating for sealing is arranged at the connection between the fixed lower cylinder 51 and the fixed upper cylinder 54.

[0035] The electric vibration component 55 includes a horizontal plate 551 which is plugged and fixedly installed at the top screw groove of the engaging flow channel 564; a pitch-adjusting screw 552 is slidably connected to the front and rear through holes of the horizontal plate 551; the rod body of the pitch-adjusting screw 552 is divided into a layered rod structure of an upper smooth rod and a lower screw groove rod, and the length of the upper smooth rod of the pitch-adjusting screw 552 is the same as the thickness of the horizontal plate 551; the bottom of the pitch-adjusting screw 552 is threadedly connected to the top screw groove of the magnetic isolation sleeve 553; the bottom of the pitch-adjusting screw 552 is rotatably connected to the top hole groove of the magnetic isolation sleeve 553; a pulse controller 554 with a current control function is fixedly installed on the front and rear sides of the magnetic isolation sleeve 553 by bolts, and the upper end of the pitch-adjusting screw 552 is rotatably connected to the top hole groove of the horizontal plate 551; an electromagnetic spring 555 is fixedly installed inside the magnetic isolation sleeve 553, and the top of the electromagnetic spring 555 is fixedly installed on the front and rear sides of the bottom of the horizontal plate 551.

[0036] The hollow cylinder 56 includes a pressure valve 561 which is plugged and fixedly installed on the back of the fixed upper cylinder 54 for controlling the air pressure; the pressure valve 561 is plugged and fixedly installed on the back of the pressure ring 562; the fixed upper cylinder 54 is sealed with a pressure ring 562; the pressure ring 562 is sealed and connected to the center hole of the pressure ring 563; the insulation sleeve 563 is slidably sleeved with a locking flow channel 564 inside.

[0037] Embodiment 2:

[0038] See also Figure 1 to Figure 6 , a demoulding device and method for an injection molding mold of a plastic part of an automobile component of the present invention, compared with the first embodiment, this embodiment further includes: a lifting structure 2; a lifting structure 2 is fixedly provided at the bottom of the lower mold 1;

[0039] The lifting structure 2 includes a cylinder seat 21 fixedly installed at the bottom of the lower mold 1; a water jacket 22 for cooling is arranged inside the cylinder seat 21; a heat insulation board 23 with a heat insulation function is fixedly arranged at the top of the cylinder seat 21 and the bottom of the lower mold 1; a cylinder 24 with a lifting function is fixedly installed at the bottom of the cylinder seat 21; a sealing ring 25 is sleeved on the outer side of the piston rod at the top of the cylinder 24, and the sealing ring 25 is fixedly arranged at the groove inside the cylinder seat 21; a lifting head 26 is fixedly inserted at the top end of the piston rod of the cylinder 24, and the lifting head 26 is slidably arranged at the bottom opening of the lower mold 1; the surface of the lifting head 26 is coated with a ceramic coating.

[0040] The working principle of the demoulding device and method of the above-mentioned automotive component plastic injection molding mold is as follows:

[0041] First, when using this device, first place the device in the working area, and then connect the device to an external power source to provide the device with the power required for operation;

[0042] Second, when performing the injection molding, first apply a release agent for demoulding to the inner cavity of the lower mold 1 and the upper mold 3. Here, the lower mold 1 and the upper mold 3 together constitute a complete mold of the quick demoulding mechanism of the injection molding machine, and are externally connected to the injection molding machine through the injection port structure 5 on the top of the upper mold 3;

[0043] Third, the injection molding material is guided through the injection port structure 5 at the top of the upper mold 3, and the injection molding material flows into the cavity between the lower mold 1 and the upper mold 3 through the engaging flow channel 564 and the sealing flow channel 53, and is filled with high-temperature molten plastic. At this time, the air inside the lower mold 1 and the upper mold 3 is squeezed and flows into the inner cavity of the pressure ring 562 through the conical air hole 52, and the pressure in the inner cavity of the pressure ring 562 gradually increases. At this time, the pressure inside the pressure ring 562 is blocked or released by starting and stopping the pressure valve 561, so that the pressure inside the pressure ring 562 The internal pressure is maintained at a certain pressure. When the molten plastic gradually fills the entire mold from bottom to top, the atomized gas with a release agent is introduced into the pressure ring 562 through the pressure valve 561. The internal air pressure of the pressure ring 562 and the tapered air hole 52 is adjusted to form a high-heat air film at the opening of the upper mold 3 and the tapered air hole 52 to prevent the molten plastic from being squeezed into the tapered air hole 52. At the same time, the air hole structure of the pressure ring 562 and the tapered air hole 52 is set at the injection port to reduce the flow channel opening and avoid excessive waste accumulation on the mold surface.

[0044] Fourth, during the injection molding process, the pulse controller 554 is controlled to provide a pulse current to the electromagnetic spring 555, so that the electromagnetic spring 555 is energized to drive the horizontal plate 551 to vibrate up and down. At this time, the pitch adjusting screw 552 is rotated to quantitatively rotate out of the screw groove of the magnetic isolation sleeve 553. Here, the horizontal plate 551 is adjusted to stop squeezing the top of the magnetic isolation sleeve 553, so that there is a gap between the horizontal plate 551 and the magnetic isolation sleeve 553, thereby changing the vibration activity stroke between the horizontal plate 551 and the magnetic isolation sleeve 553, thereby changing the vibration amplitude of the horizontal plate 551 and the engaging flow channel 564, and accelerating the flow rate of the molten plastic through vibration; after the injection molding work is completed, the molten plastic is quickly cooled through the cooling flow channel 4 cavity on the side of the lower mold 1 and the upper mold 3, and the demoulding work begins;

[0045] Fifth, firstly, the temperature inside the pressure ring 562 is detected by the detector arranged on the side of the pressure ring 562. After the pressure ring 562 is cooled to below the melting point, the gas is introduced through the pressure valve 561 to gradually increase the pressure inside the pressure ring 562, so that the fluid with the release agent inside the pressure ring 562 flows out and is introduced into the cavity of the lower mold 1 and the upper mold 3. The ejected gas gradually covers the entire outer surface of the injection molded product, and at the same time, effectively peels the entire injection molded product from the lower mold 1 and the upper mold 3, thereby improving the surface integrity of the finished product when demolded; then, the external device is controlled to drive the upper mold 3 to move, so that the mold clamping pressure between the lower mold 1 and the upper mold 3 is gradually reduced, and the gas mold on the surface of the injection molded product will gradually disappear. At the same time, the pulse controller 554 is controlled to provide a pulse current to the electromagnetic spring 555, so that the electromagnetic spring 555 is energized to drive the cross plate 551 and the clamping channel 564 and the sealing channel 53 to vibrate up and down, so that the sealing channel 53 vibrates slightly downward and hits the injection molded product, cooperating with the demolding action of the gas inside the pressure ring 562;

[0046] Sixth, while the control terminal gradually reduces the clamping pressure between the lower mold 1 and the upper mold 3, the lower mold 1, the upper mold 3 and the injection molded product will be initially demolded due to the gas blown out by the pressure ring 562, and then the hydraulic oil is slowly introduced into the cylinder 24 so that the top piston rod drives the lifting head 26 to move upward and lift the injection molded product. At the same time, the self-circulating cooling structure of the cylinder seat 21 and the water jacket 22 is realized through the flow port on the side of the cylinder seat 21 to block the heat conduction between the lower mold 1 and the upper mold 3 during the injection molding process, and to avoid the use of the cylinder at high temperature, which will damage the sealing ring, leak the hydraulic oil, and damage the cylinder.

[0047] The present invention provides a demoulding device and method for an injection molding mold for automobile parts plastic parts through improvements. By setting a self-circulating cooling type high-temperature resistant oil cylinder structure of the jacking structure 2, it is avoided that the oil cylinder sealing ring is damaged, the hydraulic oil leaks, and the oil cylinder is damaged to cause the failure of the jacking structure 2 when used in a high-temperature environment; by setting the injection port structure 5 on the top of the upper mold 3, vibration is achieved in the vertical dimension after the mold clamping pressure is reduced, and the cross-cutting damage of the upper and lower mold bodies of the mold to the injection molded product caused by vibration is reduced. The demoulding is performed by a dual method of air pressure and vibration, thereby improving the separation effect of the plastic part and the mold, and effectively improving the processing efficiency of the equipment.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0049] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A demoulding device for an injection molding mold for a plastic part of an automobile component, comprising a lower mold (1); a jacking structure (2) is fixedly arranged at the bottom of the lower mold (1); an upper mold (3) is arranged at the top of the lower mold (1); cooling channels (4) are arranged inside the lower mold (1) and the upper mold (3) for cooling; an injection port structure (5) is fixedly installed on the top of the upper mold (3); Features: The injection port structure (5) comprises a fixed lower cylinder (51) which is plugged and fixedly installed at the top feed port of the upper mold (3); a circular conical air hole (52) is arranged inside the fixed lower cylinder (51); a sealing flow channel (53) is slidably arranged at the center hole of the fixed lower cylinder (51); a fixed upper cylinder (54) is fixedly installed at the top of the fixed lower cylinder (51) by a screw; an electric vibration component (55) is fixedly installed on the outer side of the fixed upper cylinder (54) by bolts; and a hollow cylinder (56) is fixedly installed at the center hole of the fixed upper cylinder (54); The hollow cylinder (56) comprises a pressure valve (561) which is plugged and fixedly installed on the back of the fixed upper cylinder (54) for controlling air pressure; a pressure ring (562) is provided inside the fixed upper cylinder (54) for sealing; a heat insulating sleeve (563) is sealably connected to the center hole of the pressure ring (562); and a locking flow channel (564) is slidably sleeved inside the heat insulating sleeve (563); The electric vibration component (55) comprises a horizontal plate (551) which is plugged and fixedly installed at the top screw groove of the engaging flow channel (564); a pitch adjusting screw (552) is slidably connected at the front and rear through holes of the horizontal plate (551); the rod body of the pitch adjusting screw (552) is divided into a layered rod structure of an upper smooth rod and a lower screw groove rod, and the length of the upper smooth rod of the pitch adjusting screw (552) is the same as the thickness of the horizontal plate (551); the bottom of the pitch adjusting screw (552) is threadedly connected to the top screw groove of the magnetic isolation sleeve (553); the upper end of the pitch adjusting screw (552) is rotatably connected to the top hole groove of the horizontal plate (551); a pulse controller (554) having a current control function is fixedly installed on the front and rear sides of the magnetic isolation sleeve (553) by bolts; an electromagnetic spring (555) is fixedly installed inside the magnetic isolation sleeve (553), and the top of the electromagnetic spring (555) is fixedly installed on the front and rear sides of the bottom of the horizontal plate (551); A detector with a temperature detection function is arranged on the side of the fixed upper cylinder (54); and a colloid coating for sealing is arranged at the connection between the fixed lower cylinder (51) and the fixed upper cylinder (54).

2. A demoulding device for an injection molding mold of a plastic part of an automobile component according to claim 1, characterized in that: The lifting structure (2) comprises a cylinder seat (21) fixedly mounted on the bottom of the lower mold (1); a water jacket (22) for cooling is arranged inside the cylinder seat (21); a heat insulation board (23) with a heat insulation function is fixedly arranged at the top of the cylinder seat (21) and the bottom of the lower mold (1); a cylinder (24) with a lifting function is fixedly mounted at the bottom of the cylinder seat (21); a sealing ring (25) is sleeved on the outer side of the piston rod at the top of the cylinder (24), and the sealing ring (25) is fixedly arranged at a groove inside the cylinder seat (21); a lifting head (26) is fixedly inserted at the top end of the piston rod of the cylinder (24), and the lifting head (26) is slidably arranged at the bottom opening of the lower mold (1); and the surface of the lifting head (26) is coated with a ceramic coating.

3. A method for using a demoulding device for an injection molding mold for a plastic part of an automobile component, which is used to implement the demoulding device for an injection molding mold for a plastic part of an automobile component as claimed in claim 2, characterized in that: The following steps are involved: Step 1: When performing the injection molding operation, a release agent for demoulding is first applied to the inner cavities of the lower mold (1) and the upper mold (3). Here, the lower mold (1) and the upper mold (3) together constitute a complete mold of the quick demoulding mechanism of the injection molding machine, and are externally connected to the injection molding machine through the injection port structure (5) at the top of the upper mold (3); the injection molding raw material is guided through the injection port structure (5) at the top of the upper mold (3), and the injection molding raw material flows into the cavity between the lower mold (1) and the upper mold (3) through the engaging flow channel (564) and the sealing flow channel (53), and is filled with high-temperature molten plastic; Step 2: At this time, the air inside the lower mold (1) and the upper mold (3) is squeezed and flows into the inner cavity of the pressure ring (562) through the tapered air hole (52). The pressure in the inner cavity of the pressure ring (562) gradually increases. At this time, the pressure inside the pressure ring (562) is blocked or released by starting and stopping the pressure valve (561), so that the pressure inside the pressure ring (562) is maintained at a certain pressure. When the molten plastic gradually fills the entire mold from bottom to top, at this time, the atomized gas with a release agent is introduced into the pressure ring (562) through the pressure valve (561), and the internal air pressure of the pressure ring (562) and the tapered air hole (52) is adjusted to form a high-heat air film at the opening of the upper mold (3) and the tapered air hole (52), so as to prevent the molten plastic from being squeezed into the tapered air hole (52). At the same time, an air hole structure is set at the injection port to reduce the flow channel opening and avoid excessive waste accumulation on the mold surface; Step 3: During the injection molding process, the pulse controller (554) is controlled to provide a pulse current to the electromagnetic spring (555), so that the electromagnetic spring (555) is energized to drive the horizontal plate (551) to vibrate up and down. At this time, the pitch adjusting screw (552) is rotated to quantitatively rotate the pitch adjusting screw (552) out of the screw groove of the magnetic isolation sleeve (553). Here, the horizontal plate (551) is adjusted to stop squeezing the top of the magnetic isolation sleeve (553), so that a gap exists between the horizontal plate (551) and the magnetic isolation sleeve (553), thereby changing the vibration activity stroke between the horizontal plate (551) and the magnetic isolation sleeve (553), thereby changing the vibration amplitude of the horizontal plate (551) and the engaging flow channel (564), and accelerating the flow rate of the molten plastic through vibration; after the injection molding work is completed, the molten plastic is quickly cooled through the cooling flow channel (4) cavity on the side of the lower mold (1) and the upper mold (3), and the demoulding work begins; Step 4: First, the temperature inside the pressure ring (562) is detected by a detector arranged on the side of the pressure ring (562). After the pressure ring is cooled to below the melting point, gas is introduced through the pressure valve (561) to gradually increase the pressure inside the pressure ring (562), so that the fluid with the release agent inside the pressure ring (562) flows out and is introduced into the cavities of the lower mold (1) and the upper mold (3). The ejected gas gradually covers the entire outer surface of the injection molded product, and at the same time, effectively peels the entire injection molded product from the lower mold (1) and the upper mold (3), thereby improving the surface integrity of the product when it is demolded; Step 5: Then, the mold clamping pressure between the lower mold (1) and the upper mold (3) is controlled to gradually decrease, and the gas mold on the surface of the injection molded product will gradually disappear. At the same time, the pulse controller (554) is controlled to provide a pulse current to the electromagnetic spring (555), so that the electromagnetic spring (555) is energized to drive the horizontal plate (551), the engaging flow channel (564) and the sealing flow channel (53) to vibrate up and down, so that the sealing flow channel (53) slightly vibrates downward and hits the injection molded product, cooperating with the demoulding action of the gas inside the pressure ring (562); Step 6. While the control terminal gradually reduces the clamping pressure between the lower mold (1) and the upper mold (3), the lower mold (1), the upper mold (3) and the injection molded product are initially demolded due to the gas blown out by the pressure ring (562). Then, the hydraulic oil is slowly introduced into the oil cylinder (24) so ​​that the top piston rod drives the lifting head (26) to move upward and lift the injection molded product. At the same time, the flow port on the side of the oil cylinder seat (21) realizes the self-circulating cooling structure of the oil cylinder seat (21) and the water jacket (22) to block the heat conduction between the lower mold (1) and the upper mold (3) during the injection molding process, so as to avoid the use of the oil cylinder at high temperature, which will damage the sealing ring, leak the hydraulic oil and damage the oil cylinder.

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