PPA fiber-added molding die and molding process

Abstract

The present invention belongs to the field of molds and injection molding technology, and specifically relates to a PPA fiber-adding molding mold and a molding process thereof. The PPA fiber-adding molding mold provided by the present application includes a fixed mold plate, a movable mold plate, a stripping plate and a synchronizer, and the synchronizer can quantitatively adjust the mold opening time of the movable mold plate and the fixed mold plate according to the mold opening distance between the stripping plate and the fixed mold plate. The PPA fiber-adding molding mold and the molding process provided by the present application have significant technical effects such as high operating efficiency, strong adaptability, stable process, and zero surface defects.

Description

Technical Field

[0001] The invention belongs to the technical field of molds and injection molding, and particularly relates to a PPA fiber-adding molding mold and a molding process thereof. Background Art

[0002] PPA fiber-reinforced materials have been widely used due to their excellent dimensional stability, high compressive strength, corrosion resistance, electrical insulation performance and ability to fully meet OEM specifications. The foot support is a necessary accessory for supporting vehicles such as electric vehicles, motorcycles or other types of vehicles. The following technical problems exist in the prior art: 1. The existing injection molding process cannot meet the injection molding requirements of PPA fiber-reinforced foot supports, and surface defects such as white spots or stripes are prone to appear on the appearance of the product; 2. The existing mold cannot quantitatively adjust the mold opening time of the movable mold plate and the fixed mold plate according to the mold opening distance between the stripping plate and the fixed mold plate, which affects the operating efficiency and has insufficient adaptability. Summary of the invention

[0003] In view of this, the present invention provides a PPA fiber addition molding die and a molding process thereof to solve the technical problems existing in the prior art.

[0004] The PPA fiber forming mold provided by the present invention to solve the technical problem is:

[0005] A PPA fiber addition molding die comprises a fixed die plate, a movable die plate and a stripping plate, and is characterized in that it also comprises a synchronizer for quantitatively adjusting the mold opening time of the movable die plate and the fixed die plate according to the mold opening distance between the stripping plate and the fixed die plate.

[0006] Preferably, the synchronizer comprises a fixed module, a movable module, a locking block, a synchronization rod, a lifting component and a lifting component; the fixed module, the movable module and the locking block are respectively fixedly mounted on the fixed template, the movable template and the stripping plate; a lifting cavity is arranged in the fixed module, the lifting component is arranged in the lifting cavity, and a locking matching structure is arranged on the lifting component; a locking part is arranged on the movable module, and a locking structure is arranged on the locking part; the locking part can enter the lifting cavity when the fixed template and the movable template are closed and lock the closed state between the fixed template and the movable template through the cooperation between the locking structure and the locking matching structure; one end of the synchronization rod is fastened to the locking block, the rod body of the synchronization rod is assembled in the lifting cavity, the lifting component is arranged on the synchronization rod, and the lifting component can open the locking state between the fixed template and the movable template through the cooperation between the lifting component when the opening distance between the fixed template and the stripping plate reaches a predetermined length, so that the fixed template and the movable template can be opened smoothly.

[0007] Preferably, the locking matching structure is a column structure or a hole structure, and correspondingly, the locking structure is a hole structure or a column structure.

[0008] Preferably, the lifting component includes a connecting portion and a lifting portion, the connecting portion is used to connect the lifting component to the synchronization rod, and the lifting portion is used to cooperate with the lifting component to open the locking state between the fixed template and the movable template; the lifting component is provided with a lifting matching portion, and the lifting matching portion is used to cooperate with the lifting portion to open the locking state between the fixed template and the movable template.

[0009] Preferably, the lifting portion and the lifting matching portion are respectively inclined planes or inclined curved surfaces with mutually matching directions, and the lifting component can lift the lifting component to open the locking connection between the locking matching structure and the locking structure through the cooperation between the lifting portion and the lifting matching portion.

[0010] Preferably, the assembly distance between the lifting portion and the lifting matching portion satisfies: x =l0-h0· ctgα. Among them: l x is the distance between the two inclined planes of the lifting part and the lifting matching part; l0 is the mold opening distance between the stripping plate and the fixed mold plate; h0 is the lifting height, that is, the locking depth between the locking structure and the locking matching structure; α is the inclination angle of the inclined plane.

[0011] Preferably, an adjustable connection is established between the connecting portion and the synchronization rod through threaded cooperation so that the mold opening time between the fixed mold plate and the movable mold plate can adapt to the mold opening distance between the stripping plate and the fixed mold plate.

[0012] The PPA fiber addition molding process provided by the present invention to solve the technical problem is:

[0013] A PPA fiber addition molding process, characterized in that: the PPA fiber addition molding mold recorded in any of the above-mentioned technical solutions is used to complete the injection molding of the PPA fiber addition material.

[0014] Preferably, the PPA fiber addition molding process includes a mold adjustment step and an injection molding step; in the mold adjustment step, the mold opening time of the movable mold plate and the fixed mold plate is quantitatively adjusted according to the mold opening distance between the stripping plate and the fixed mold plate; in the injection molding step, the following process parameters are used for injection molding of the PPA fiber addition material:

[0015]

[0016] Preferably, the injection molding step adopts three-stage injection to complete the injection molding process, and the injection molding process includes a medium-speed low-pressure filling stage, a high-pressure high-speed filling stage and a low-pressure low-speed melting stage. The process parameters of each stage are:

[0017] Medium speed and low pressure filling stage: injection pressure 60MPa, injection speed 100mm / s;

[0018] High-pressure and high-speed filling stage: injection pressure 95MPa, injection speed 132mm / s;

[0019] Low-pressure and low-speed melting stage: injection pressure 68MPa, injection speed 65mm / s.

[0020] Preferably, in the mold adjustment step, the distance between the lifting component and the lifting component needs to be adjusted according to the mold opening distance between the stripping plate and the fixed mold plate so that the assembly distance between the lifting part and the lifting matching part is l x Satisfy: x =l0-h0· ctgα. Among them: l x is the distance between the two inclined planes of the lifting part and the lifting matching part; l0 is the mold opening distance between the stripping plate and the fixed mold plate; h0 is the lifting height, that is, the locking depth between the locking structure and the locking matching structure; α is the inclination angle of the inclined plane.

[0021] Beneficial technical effects:

[0022] 1. The PPA fiber-adding molding mold provided in the present application can quantitatively adjust the mold opening time of the movable mold plate and the fixed mold plate according to the mold opening distance between the stripping plate and the fixed mold plate through an integrated synchronizer, and has high operating efficiency and adaptability.

[0023] 2. The PPA fiber-added molding process provided in this application, by optimizing the injection molding process parameters, provides a parameter combination that can perfectly realize the injection molding of the PPA fiber-added foot support, and has significant technical effects such as stable process and basically no surface defects.

[0024] The technical solution and technical effects of the present application are described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 : Schematic diagram of the PPA fiber forming mold structure;

[0026] Figure 2 : Top view of the fixed module and lifting component structure;

[0027] Figure 3 : Front view of the fixed module and lifting component structure;

[0028] Figure 4 : Side view of the fixed module and lifting component structure;

[0029] Figure 5 : Schematic diagram of the coordination between the lifting components and the lifting components.

[0030] Logo Description:

[0031] 10-fixed template, 20-movable template, 30-stripping plate, 40-synchronizer;

[0032] 410-fixed module, 420-moving module, 430-locking block, 440-synchronizing rod, 450-lifting component, 460-lifting component;

[0033] 4110-lifting chamber;

[0034] 4210-locking portion, 4220-locking structure;

[0035] 4510-connecting part, 4520-lifting part;

[0036] 4610-locking mating structure, 4620-lifting mating part. DETAILED DESCRIPTION

[0037] See also Figure 1-Figure 5 The PPA fiber addition molding mold provided in the present application includes a fixed mold plate 10, a movable mold plate 20, a stripping plate 30 and a synchronizer 40. The synchronizer 40 can quantitatively adjust the mold opening time of the movable mold plate 20 and the fixed mold plate 10 according to the mold opening distance between the stripping plate 30 and the fixed mold plate 10.

[0038] The synchronizer 40 includes a fixed module 410, a movable module 420, a locking block 430, a synchronization rod 440, a lifting component 450, and a lifting component 460; the fixed module 410, the movable module 420, and the locking block 430 are respectively fixedly mounted on the fixed template 10, the movable template 20, and the stripping plate 30.

[0039] A lifting chamber 4110 is provided in the fixed module 410, and a lifting component 460 is provided in the lifting chamber 4110. A locking matching structure 4610 and a lifting matching part 4620 are provided on the lifting component 460; the locking matching structure 4610 is specifically a column structure, and the lifting matching part 4620 is specifically an inclined plane.

[0040] The movable die plate 420 is provided with a locking portion 4210, and a locking structure 4220 is provided on the locking portion 4210; the locking portion 4210 is specifically a rod-shaped structure, and the locking structure 4220 is specifically a hole structure corresponding to the locking matching structure 4610. The locking portion 4210 can enter the lifting chamber 4110 when the fixed die plate 10 and the movable die plate 20 are molded, and lock the molded state between the fixed die plate 10 and the movable die plate 20 through the cooperation between the locking structure 4220 and the locking matching structure 4610 (that is, the molded state is locked through the cooperation of the column structure and the hole structure).

[0041] One end of the synchronization rod 440 is fastened to the locking block 430, the rod body of the synchronization rod 440 is assembled in the lifting chamber 4110, and the lifting component 450 is arranged on the synchronization rod 440. The lifting component 450 includes a connecting portion 4510 and a lifting portion 4520, the connecting portion 4510 is used to connect the lifting component 450 to the synchronization rod 440, and the lifting portion 4520 is used to cooperate with the lifting component 460 to open the locking state between the fixed mold plate 10 and the movable mold plate 20. The connecting portion 4510 is adjustable and connected to the synchronization rod 440 through threaded cooperation so that the mold opening time between the fixed mold plate 10 and the movable mold plate 20 can adapt to the mold opening distance between the stripping plate 30 and the fixed mold plate 10. The lifting portion 4520 has an inclined plane structure that matches with the lifting matching portion 4620, and the lifting portion 4520 opens the locking state between the fixed mold plate 10 and the movable mold plate 20 by cooperating with the inclined plane between the lifting matching portion 4620.

[0042] By setting the assembly distance l between the lifting portion 4520 and the lifting matching portion 4620 x When the mold opening distance between the fixed mold plate 10 and the stripper plate 30 reaches a predetermined length l0, the lifting component 450 can open the locking state between the fixed mold plate 10 and the movable mold plate 20 through cooperation with the lifting component 460, so that the fixed mold plate 10 and the movable mold plate 20 can be opened smoothly. Figure 5 When the locking depth between the locking structure 4220, i.e., the hole structure, and the locking matching structure 4610, i.e., the column structure, i.e., the matching depth between the column structure and the hole structure is h0, and the inclination angle of the inclined plane is α, the assembly distance l between the lifting portion 4520 and the lifting matching portion 4620 is x Satisfy: x =l0-h0·ctgα, where:

[0043] l x is the horizontal distance between the two inclined planes of the lifting portion 4520 and the lifting matching portion 4620;

[0044] l0 is a predetermined mold opening distance between the stripping plate 30 and the fixed mold plate 10;

[0045] h0 is the lifting height, i.e., the locking depth between the locking structure 4220 and the locking matching structure 4610;

[0046] α is the inclination angle of the inclined plane.

[0047] By quantitatively adjusting the fixed position of the lifting component 450 on the synchronization rod 440, the mold opening distance of different products can be adapted.

[0048] Corresponding to the above-mentioned mold structure, the PPA fiber addition molding process disclosed in the present application uses the PPA fiber addition molding mold provided in the present application to complete the injection molding of the PPA fiber addition material.

[0049] The PPA fiber molding process includes a mold adjustment step and an injection molding step. In the mold adjustment step, the mold opening time of the movable mold plate 20 and the fixed mold plate 10 is quantitatively adjusted according to the mold opening distance between the stripping plate 30 and the fixed mold plate 10; the specific adjustment method is to adjust the horizontal distance l between the two inclined planes of the lifting part 4520 on the lifting part 450 and the lifting matching part 4620 on the lifting part 460 x Adjust to l x =l0-h0·ctgα, where:

[0050] l x is the horizontal distance between the two inclined planes of the lifting portion 4520 and the lifting matching portion 4620;

[0051] l0 is a predetermined mold opening distance between the stripping plate 30 and the fixed mold plate 10;

[0052] h0 is the lifting height, i.e., the locking depth between the locking structure 4220 and the locking matching structure 4610;

[0053] α is the inclination angle of the inclined plane.

[0054] The injection molding step uses three-stage injection and the following process parameters to perform injection molding of PPA fiber-reinforced materials:

[0055] Medium speed and low pressure filling stage: injection pressure 60MPa, injection speed 100mm / s;

[0056] High-pressure and high-speed filling stage: injection pressure 95MPa, injection speed 132mm / s;

[0057] Low-pressure and low-speed melting stage: injection pressure 68MPa, injection speed 65mm / s.

[0058]

[0059] The PPA fiber-adding molding mold provided in the present application can quantitatively adjust the mold opening time of the movable mold plate and the fixed mold plate according to the mold opening distance between the stripping plate and the fixed mold plate through an integrated synchronizer, and has high operating efficiency and adaptability.

[0060] The PPA fiber-added molding process provided in this application, by optimizing the injection molding process parameters, provides a parameter combination that can perfectly realize the injection molding of the PPA fiber-added foot support, and has significant technical effects such as stable process and basically no surface defects.

[0061] The technical scheme and technical effects of the present invention are described in detail above in combination with the drawings and specific embodiments of the specification. It should be noted that the specific implementation methods disclosed in the specification are only preferred embodiments of the present invention, and technicians in the field can also develop other embodiments on this basis; any simple deformation and equivalent substitution that does not deviate from the innovative concept of the present invention are covered by the present invention and belong to the protection scope of this patent.

Claims

1. A PPA fiber forming mold, comprising a fixed mold plate (10), a movable mold plate (20) and a stripping plate (30), characterized in that: Also included is a synchronizer (40), the synchronizer (40) being used to quantitatively adjust the mold opening time of the movable mold plate (20) and the fixed mold plate (10) according to the mold opening distance between the stripping plate (30) and the fixed mold plate (10); The synchronizer (40) comprises a fixed module (410), a movable module (420), a locking block (430), a synchronization rod (440), a lifting component (450), and a lifting component (460); The fixed module (410), the movable module (420), and the locking block (430) are respectively fixedly mounted on the fixed die plate (10), the movable die plate (20), and the stripping plate (30); A lifting chamber (4110) is provided in the fixed module (410), the lifting component (460) is provided in the lifting chamber (4110), and a locking matching structure (4610) is provided on the lifting component (460); The moving module (420) is provided with a locking portion (4210), and the locking portion (4210) is provided with a locking structure (4220); The locking portion (4210) is capable of entering the lifting chamber (4110) when the fixed mold plate (10) and the movable mold plate (20) are in mold closing, and locking the mold closing state between the fixed mold plate (10) and the movable mold plate (20) through the cooperation between the locking structure (4220) and the locking cooperation structure (4610); One end of the synchronization rod (440) is fastened to the locking block (430), the rod body of the synchronization rod (440) is assembled in the lifting chamber (4110), the lifting component (450) is arranged on the synchronization rod (440), and the lifting component (450) can open the locking state between the fixed mold plate (10) and the movable mold plate (20) through cooperation with the lifting component (460) when the mold opening distance between the fixed mold plate (10) and the stripping plate (30) reaches a predetermined length, so that the fixed mold plate (10) and the movable mold plate (20) can be opened smoothly; The locking mating structure (4610) is a column structure or a hole structure, and correspondingly, the locking structure (4220) is a hole structure or a column structure; The lifting component (450) comprises a connecting portion (4510) and a lifting portion (4520), wherein the connecting portion (4510) is used to connect the lifting component (450) to the synchronization rod (440), and the lifting portion (4520) is used to cooperate with the lifting component (460) to open the locking state between the fixed die plate (10) and the movable die plate (20); The lifting component (460) is provided with a lifting matching portion (4620), and the lifting matching portion (4620) is used to cooperate with the lifting portion (4520) to open the locking state between the fixed template (10) and the movable template (20); The lifting portion (4520) and the lifting matching portion (4620) are respectively inclined planes or inclined curved surfaces whose directions match each other, and the lifting component (450) can lift the lifting component (460) through the cooperation between the lifting portion (4520) and the lifting matching portion (4620) to open the locking connection between the locking matching structure (4610) and the locking structure (4220); The assembly distance between the lifting portion (4520) and the lifting matching portion (4620) satisfies: l x =l0-h0·ctgα, where: l x is the distance between two inclined planes of the lifting portion (4520) and the lifting matching portion (4620); l0 is the mold opening distance between the stripping plate (30) and the fixed mold plate (10); h0 is the lifting height, i.e., the locking depth between the locking structure (4220) and the locking matching structure (4610); α is the inclination angle of the inclined plane.

2. The PPA fiber-adding molding die according to claim 1, characterized in that: An adjustable connection is established between the connecting portion (4510) and the synchronization rod (440) through threaded engagement so that the mold opening time between the fixed mold plate (10) and the movable mold plate (20) can adapt to the mold opening distance between the stripping plate (30) and the fixed mold plate (10). 3.PPA fiber forming process, characterized by: The PPA fiber-added molding mold described in claim 1 is used to complete the injection molding of the PPA fiber-added material.

4. The PPA fiber addition molding process according to claim 3, characterized in that: The PPA fiber-adding molding process includes a mold adjustment step and an injection molding step; In the mold adjustment step, the mold opening time of the movable mold plate (20) and the fixed mold plate (10) is quantitatively adjusted according to the mold opening distance between the stripping plate (30) and the fixed mold plate (10); The following process parameters are used in the injection molding step to perform injection molding of the PPA fiber-reinforced material: 。 5. The PPA fiber addition molding process according to claim 4 is characterized in that: The injection molding step adopts three-stage injection to complete the injection molding process, including a medium-speed low-pressure filling stage, a high-pressure high-speed filling stage, and a low-pressure low-speed melting stage. The process parameters of each stage are: Medium speed and low pressure filling stage: injection pressure 60MPa, injection speed 100mm / s; High-pressure and high-speed filling stage: injection pressure 95MPa, injection speed 132mm / s; Low-pressure and low-speed melting stage: injection pressure 68MPa, injection speed 65mm / s.

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