A molding die for elastic polyester cotton material used in automobiles and its working method

Abstract

This invention relates to a molding die for automotive elastic polyester cotton material and its working method, belonging to the field of plastic molding technology. It includes a frame, a conveyor, a mold assembly, a filling system, and a swing system. The swing system slides along the frame. The conveyor is mounted on the frame and is connected to the swing system via a transmission connection. The filling system is located above the conveyor and is adapted to the mold assembly. The mold assembly is mounted on the swing system. The swing system includes a swing frame trolley, a central suction device, and two side push devices. The side push devices are mounted on both sides of the swing frame trolley, which is slidably mounted on the frame. The central suction device is mounted in the middle of the swing frame trolley. The bottom of the mold assembly has a V-groove, through which the mold assembly is placed on the central suction device. The frame has several push blocks. The side push devices are slidably mounted on the swing frame trolley in the lifting direction and are connected to the mold assembly via a transmission connection to ensure molding quality.

Description

Technical Field

[0001] This invention relates to the field of plastic molding technology, and in particular to a molding die for elastic polyester cotton material used in automobiles and its working method. Background Technology

[0002] Elastic polyester cotton is mainly used in automobiles for sound insulation systems, seat fillings, and interior components. It features lightweight, high elasticity, and wear resistance. It is a high-performance polyester fiber material specifically developed to meet the automotive industry's demands for lightweighting, comfort, and environmental protection. Elasticity is achieved through two main technical paths: one is to modify the molecular structure of polyester, and the other is through composite spinning and physical processing, thereby forming a fluffy, compressible, and recoverable elastomer on a macroscopic scale. It has been reinforced for the harsh environment of automobiles and is gradually becoming an ideal choice to replace traditional polyurethane foam and other materials.

[0003] Inside automobiles, the most significant application of this type of material is in seating systems. When used as cushion and backrest filling, it not only provides superior support and long-term shape stability compared to traditional foam, but also significantly improves breathability and compression resilience, thereby enhancing ride comfort. Furthermore, its inherent flame-retardant properties meet automotive interior safety standards. In addition, specially modified polyester filament yarns with better elastic recovery are also commonly used in seat fabrics, ensuring that the fabric does not easily loosen or wrinkle after prolonged pressure.

[0004] Elastic polyester cotton material needs to be molded, and defects can easily be caused by air bubbles during the molding process. Summary of the Invention

[0005] To overcome the technical defects of the existing technology, the present invention provides a molding die for elastic polyester cotton material for automobiles and its working method, ensuring molding quality.

[0006] The technical solution adopted in this invention is:

[0007] A molding die for automotive elastic polyester cotton material includes a frame, a conveyor, a die assembly, an injection system, and a swing system. The conveyor is mounted on the frame, and the swing system slides along the frame. The conveyor and the swing system are connected by a drive mechanism. The injection system is mounted on the frame and located above the conveyor. The injection system is adapted to the die assembly. The die assembly is mounted on the swing system. The swing system includes a swing frame trolley, a central suction device, and two side push devices. The side push devices are mounted on both sides of the swing frame trolley, which is slidably mounted on the frame. The central suction device is mounted in the middle of the swing frame trolley. The die assembly has a V-groove at its bottom, and the die assembly is placed on the central suction device through the V-groove. The frame has several push-up blocks. The side push devices are slidably mounted on the swing frame trolley in the lifting direction and are connected by a drive mechanism. The side push devices follow the trajectory of the swing frame trolley as it moves, passing through each push-up block.

[0008] Preferably, the conveyor includes a conveyor motor and a conveyor chain. The conveyor chain passes around each sprocket and is mounted on a frame via several sprockets. Each sprocket is rotatably mounted on the frame. The conveyor motor is mounted on the frame and is driven by the conveyor chain. The swing frame trolley is mounted on the conveyor chain and is driven by the conveyor motor and sprockets.

[0009] Preferably, the mold device includes an upper module and a lower module that are assembled together, the V-groove is located at the bottom of the lower module, and the upper module is adapted to the injection system.

[0010] Preferably, the injection system includes an injection gun and an injection motion device, the injection gun is mounted on the injection motion device, the injection motion device is mounted on a frame, and the injection gun is adapted to the mold device.

[0011] Preferably, the swing frame trolley includes a trolley slider, a swing frame body, and a fixing bolt. The frame is provided with a mold sliding rail. The swing frame body is mounted on the mold sliding rail via the trolley slider. The fixing bolt is mounted on the trolley slider and points towards the mold sliding rail.

[0012] Preferably, the central attraction device includes an attraction bar and an attraction push spring. The attraction bar is slidably mounted on the swing frame trolley. The two ends of the attraction push spring abut against the bottom of the attraction bar and the top of the swing frame trolley, respectively. The top of the attraction bar is provided with a pointed corner that matches the V-groove, and the top of the attraction bar is provided with a permanent magnet.

[0013] Preferably, the side-pushing device includes a push block, which is slidably mounted on the swing frame trolley and is connected to the push inclined block in a transmission manner.

[0014] The working method of the molding die for automotive elastic polyester cotton material includes the following steps:

[0015] S1: Place the mold assembly on the central suction device;

[0016] S2: The mold device approaches the injection system under the drive of the swing system;

[0017] S3: The injection system injects material into the mold device for molding;

[0018] S4: The oscillating system drives the mold device to oscillate, promoting material flow and ensuring molding effect.

[0019] The beneficial effects of this invention are:

[0020] The conveyor is mounted on the frame, and the oscillating system slides along the frame. The conveyor and the oscillating system are connected by a transmission. The conveyor drives the oscillating system to move closer to or further away from the injection system. The mold device is mounted on the oscillating system. During the movement of the oscillating system, the oscillating system drives the mold device to oscillate, which accelerates the flow of material in the mold device, promotes the expulsion of air bubbles, and ensures the molding quality. The injection system is mounted on the frame and is located above the conveyor. The injection system is adapted to the mold device for injection.

[0021] The oscillating system includes an oscillating trolley, a central suction device, and two side-pushing devices. The side-pushing devices are installed on both sides of the oscillating trolley, which is slidably mounted on the frame. The sliding of the oscillating trolley moves the mold assembly, bringing it closer to the injection system for injection and moving it away from the system after injection. The central suction device is installed in the middle of the oscillating trolley. The bottom of the mold assembly has a V-groove, through which it rests on the central suction device to prevent it from slipping off the oscillating trolley. The frame has several push-up blocks. The side-pushing devices are slidably mounted on the oscillating trolley in the lifting direction and are connected to the mold assembly via a transmission. The side-pushing devices follow the trajectory of the oscillating trolley as it moves, passing over the push-up blocks. As the oscillating trolley slides along the frame, the side-pushing devices slide against the push-up blocks, rising and falling under the push of the inclined surface on the upper surface of the push-up blocks. This causes the side-pushing devices to slide up and down along the oscillating trolley, propelling the mold assembly to oscillate, accelerating the material flow within the mold assembly, promoting the removal of air bubbles, and ensuring molding quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 for Figure 1Schematic diagram of the structure at point A in the middle.

[0024] Figure 3 for Figure 1 Schematic diagram of the structure at point B.

[0025] Figure 4 for Figure 1 Schematic diagram of the structure at point C.

[0026] Figure 5 This is a schematic diagram illustrating the oscillation principle of an oscillating system.

[0027] Figure 6 This is a schematic diagram of the module structure.

[0028] Figure 7 This is a schematic diagram of the module structure.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Frame; 11. Mold sliding rail; 12. Pushing slant block;

[0031] 2. Conveyor;

[0032] 3. Mold assembly; 31. Upper module; 32. Lower module; 321. V-groove;

[0033] 4. Infusion system; 41. Infusion gun; 42. Infusion motion device;

[0034] 5. Swing system; 51. Swing frame trolley; 511. Trolley slider; 512. Swing frame body; 513. Fixing bolt; 52. Central suction device; 521. Suction bar; 522. Suction push spring; 53. Side push device; 531. Push block. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings:

[0036] like Figure 1 — Figure 7 As shown, this embodiment provides a molding die for automotive elastic polyester cotton material, including a frame 1, a conveyor 2, a mold device 3, an injection system 4, and a swing system 5. The conveyor 2 is mounted on the frame 1, and the swing system 5 slides along the frame 1. The conveyor 2 and the swing system 5 are connected by a transmission. The conveyor 2 drives the swing system 5 to move, allowing the swing system 5 to move closer to or further away from the injection system 4. The mold device 3 is mounted on the swing system 5. During the movement of the swing system 5, the swing system 5 drives the mold device 3 to swing, accelerating the material flow within the mold device 3, promoting the expulsion of air bubbles, and ensuring molding quality. The injection system 4 is mounted on the frame 1 and is located above the conveyor 2. The injection system 4 is adapted to the mold device 3 for injection.

[0037] The swing system 5 includes a swing frame trolley 51, a central suction device 52, and two side push devices 53. The side push devices 53 are installed on both sides of the swing frame trolley 51, which is slidably mounted on the frame 1. The sliding of the swing frame trolley 51 moves the mold device 3, thereby bringing the mold device 3 closer to the pouring system 4 for pouring, and after pouring, moving the mold device 3 away from the pouring system 4. The central suction device 52 is installed in the middle of the swing frame trolley 51. The bottom of the mold device 3 is provided with a V-groove 321. The mold device 3 is placed on the central suction device 52 through the V-groove 321, preventing the mold device 3 from falling off the swing frame trolley 51. The machine slides down, and the frame 1 is provided with several push-in inclined blocks 12. The side push device 53 is slidably installed on the swing frame trolley 51 in the lifting direction. The side push device 53 is connected to the mold device 3 in a transmission. The side push device 53 follows the trajectory of the swing frame trolley 51 as it moves and passes through each push-in inclined block 12. Then, while the swing frame trolley 51 slides along the frame 1, the side push device 53 slides on the push-in inclined block 12. Under the push of the inclined surface on the upper surface of the push-in inclined block 12, the machine moves up and down, so that the side push device 53 slides up and down along the swing frame trolley 51, thereby pushing the mold device 3 to swing, accelerating the material flow in the mold device 3, promoting the discharge of air bubbles, and ensuring the molding quality.

[0038] Specifically, the conveyor 2 includes a conveyor motor and a conveyor chain. The conveyor chain passes around each sprocket and is mounted on the frame 1 via several sprockets. Each sprocket is rotatably mounted on the frame 1. The conveyor motor is mounted on the frame 1 and is connected to the conveyor chain via a drive. The swing frame trolley 51 is mounted on the conveyor chain and is connected to the sprocket via a drive. The rotation of the conveyor motor pulls the conveyor chain to move, thereby realizing the movement of the swing system 5.

[0039] Specifically, the mold device 3 includes an upper module 31 and a lower module 32 that are assembled together. A V-groove 321 is located at the bottom of the lower module 32. The upper module 31 is adapted to the injection system 4. The injection system 4 injects material into the upper module 31. The material is injected into the cavity between the upper module 31 and the lower module 32 to realize the molding of polyester cotton material.

[0040] Specifically, the injection system 4 includes an injection gun 41 and an injection motion device 42. The injection gun 41 is mounted on the injection motion device 42, and the injection motion device 42 is mounted on the frame 1. The injection gun 41 is adapted to the mold device 3 to inject material.

[0041] Specifically, the swing frame trolley 51 includes a trolley slider 511, a swing frame body 512, and a fixing bolt 513. The frame 1 is provided with a mold sliding rail 11. The swing frame body 512 is mounted on the mold sliding rail 11 via the trolley slider 511 to realize the lateral movement of the swing frame body 512. The fixing bolt 513 is mounted on the trolley slider 511 and points towards the mold sliding rail 11. During material pouring, the fixing bolt 513 temporarily fixes the swing frame trolley 51 to ensure no material leakage. As a more automated design, the fixing bolt 513 can be replaced by a cylinder that pushes against the mold sliding rail 11 when it extends.

[0042] Specifically, the central attraction device 52 includes an attraction bar 521 and an attraction push spring 522. The attraction bar 521 is slidably mounted on the swing frame trolley 51. The two ends of the attraction push spring 522 respectively abut against the bottom of the attraction bar 521 and the top of the swing frame trolley 51. The top of the attraction bar 521 has a sharp corner that matches the V-groove 321, thereby maintaining the position of the mold device 3 and preventing the mold device 3 from being misaligned. The top of the attraction bar 521 has a permanent magnet to further prevent the mold device 3 from being misaligned. The V-groove 321 swings under the constraint of the top of the attraction bar 521, accelerating the movement of the mold device 3. The material flowability promotes the expulsion of air bubbles. The reason for setting the suction push spring 522 is that when the injection system 4 is injecting, when the injection system 4 presses down and aligns with the preset injection port on the upper module 31, the suction push spring 522 can be compressed, so that the lower module 32 is pressed down onto the two side push devices 53, thereby stabilizing the mold device 3 during injection. In order to ensure a stable connection between the injection system 4 and the preset injection port on the upper module 31, the injection system 4 is hemispherical near the injection port, thus ensuring a seal during the injection process when the upper module 31 swings with the V-groove 321.

[0043] Specifically, the side-pushing device 53 includes a push block 531, which is slidably mounted on the swing frame trolley 51. The push block 531 is connected to the push inclined block 12 for transmission, which drives the mold device 3 to swing to ensure molding quality.

[0044] The working method of the molding die for automotive elastic polyester cotton material includes the following steps:

[0045] S1: Place the mold device 3 on the central suction device 52;

[0046] S2: The mold device 3 moves closer to the injection system 4 under the drive of the swing system 5;

[0047] S3: The injection system injects material into the mold device 3 to form the mold;

[0048] S4: The oscillating system 5 drives the mold device 3 to oscillate, promoting material flow and ensuring molding effect.

[0049] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A molding die for elastic polyester cotton material used in automobiles, characterized in that, The system includes a frame, a conveyor, a mold assembly, a pouring system, and a swinging system. The conveyor is mounted on the frame, and the swinging system slides along the frame. The conveyor and the swinging system are connected by a drive mechanism. The pouring system is mounted on the frame and located above the conveyor. The pouring system is adapted to the mold assembly, which is mounted on the swinging system. The swinging system includes a swing frame trolley, a central suction device, and two side pushers. The side pushers are mounted on both sides of the swing frame trolley, which is slidably mounted on the frame. The central suction device is mounted in the center of the swing frame trolley. The mold assembly... The bottom is provided with a V-shaped groove, and the mold device is placed on the central suction device through the V-shaped groove. The frame is provided with several push-in inclined blocks. The side push device is slidably mounted on the swing frame trolley in the lifting direction. The side push device is connected to the mold device in a transmission. The side push device follows the trajectory of the swing frame trolley as it moves and passes through each push-in inclined block. The mold device includes an upper module and a lower module that are assembled with each other. The V-shaped groove is located at the bottom of the lower module. The upper module is adapted to the injection system. The side push device includes a push-in block. The push-in block is slidably mounted on the swing frame trolley in a lifting and lowering manner. The push-in block is connected to the push-in inclined block in a transmission.

2. The molding die for an automotive elastic polyester cotton material according to claim 1, characterized in that, The conveyor includes a conveyor motor and a conveyor chain. The conveyor chain passes around each sprocket and is mounted on a frame via several sprockets. Each sprocket is rotatably mounted on the frame. The conveyor motor is mounted on the frame and is driven by the conveyor chain. The swing frame trolley is mounted on the conveyor chain and is driven by the conveyor motor and sprockets.

3. The molding die for elastic polyester cotton material for automobiles according to claim 1, characterized in that, The injection system includes an injection gun and an injection motion device. The injection gun is mounted on the injection motion device, which is mounted on a frame. The injection gun is adapted to the mold device.

4. The molding die for an automotive elastic polyester cotton material according to claim 1, characterized in that, The swing frame trolley includes a trolley slider, a swing frame body, and a fixing bolt. The frame is provided with a mold sliding rail. The swing frame body is mounted on the mold sliding rail via the trolley slider. The fixing bolt is mounted on the trolley slider and points towards the mold sliding rail.

5. The molding die for an automotive elastic polyester cotton material according to claim 1, characterized in that, The central attraction device includes an attraction bar and an attraction push spring. The attraction bar is slidably mounted on the swing frame trolley. The two ends of the attraction push spring abut against the bottom of the attraction bar and the top of the swing frame trolley, respectively. The top of the attraction bar is provided with a pointed corner that matches the V-groove, and the top of the attraction bar is provided with a permanent magnet.

6. A method for operating a molding die for automotive elastic polyester cotton material, using the molding die for automotive elastic polyester cotton material as described in claim 1, characterized in that... Includes the following steps: S1: Place the mold assembly on the central suction device; S2: The mold device approaches the injection system under the drive of the swing system; S3: The injection system injects material into the mold device for molding; S4: The oscillating system drives the mold device to oscillate, promoting material flow and ensuring molding effect.

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