Ramie fiber / polypropylene composite material for automobile interior and preparation device

Abstract

The invention relates to the technical field of composite material preparation, in particular to a ramie fiber / polypropylene composite material for automobile interior decoration and a preparation device, comprising a bottom plate, a workbench, a work box, a liquid injection mold and a guide plate, wherein the workbench is fixedly connected to the surface of the bottom plate, the work box is fixedly connected to the upper surface of the workbench, the liquid injection mold is fixedly connected to the top of the workbench, the guide plate is fixedly connected to the upper surface of the workbench, and a flipping assembly for flipping a template is arranged on the work box and the guide plate; the invention drives a rack-shaped blade meshed with the transmission gear 2 to move toward a direction close to a molding mold through the rotation of the transmission gear 2, so that the rack-shaped blade cuts the scraps at the liquid injection port on the template, thereby avoiding the existing work of personnel cutting the scraps on the template after demolding, reducing the workload of the staff and relieving the work burden of the staff, and at the same time, uniform cutting ensures the consistency of the appearance of the template.

Description

Technical Field

[0001] The invention relates to the technical field of composite material preparation, and in particular to a ramie fiber / polypropylene composite material for automobile interior decoration and a preparation device. Background Art

[0002] Most of the automobile interior panels are made of composite materials, and the automobile interior panels made of ramie fiber / polypropylene composite materials have the advantages of light weight, high strength and good durability. Ramie fiber / polypropylene composite materials are a composite material made of polypropylene as the base resin and ramie fiber as the reinforcing material.

[0003] In the preparation process of ramie fiber / polypropylene composite materials, polypropylene and ramie fiber are usually mixed and heated to form a molten liquid, which is then injected into a mold of a specific shape. The surface of the mold is cooled by a cooling device in the mold to form a template, and the template is pushed by a push rod to make it fall off the mold.

[0004] In the preparation process of the existing ramie fiber / polypropylene composite material, when the template is taken out of the mold, if the template is large in size and mass, a push rod is required to exert a greater force on the template to push the template out of the mold. At this time, the template has not been completely cooled and shaped, and still has a certain flexibility, so that when the push rod pushes the template, a depression appears at the contact point between the template surface and the push rod, resulting in defects in the appearance of the template; at the same time, the template will directly contact the work surface after demolding. Under the action of the template's own gravity, it directly contacts the work surface, and the contact point structure is easily deformed and may even crack.

[0005] In addition, after demoulding, the template needs to remove the scraps formed at the injection port, which increases the workload of the staff.

[0006] Therefore, a ramie fiber / polypropylene composite material for automobile interior decoration and a preparation device are proposed. Summary of the invention

[0007] The object of the present invention is to provide a ramie fiber / polypropylene composite material for automobile interior decoration and a preparation device to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: A ramie fiber / polypropylene composite material for automobile interior, comprising the following raw materials in parts by weight: 60-80 parts of polypropylene, 5-25 parts of ramie fiber, and 2-5 parts of a compatibilizer;

[0009] The preparation method of the ramie fiber / polypropylene composite material is as follows:

[0010] Step 1: Pretreatment: cleaning, screening and drying the ramie fibers to remove dust and impurities on the surface of the ramie fibers, while screening out larger impurities and loose fibers, and drying the screened ramie fibers;

[0011] Step 2: Mixing: weigh the raw materials in proportion, mix the polypropylene, ramie fiber and compatibilizer, and add them into the feeding hopper of the injection molding machine;

[0012] Step 3: Melting and extruding, the polypropylene, ramie fiber and compatibilizer are mixed and melted to form a molten liquid, and the molten liquid is injected into the injection mold of the preparation device so that the molten liquid fills the injection mold;

[0013] Step 4: demoulding. When the molten liquid in the injection mold of the preparation device is cooled and shaped, the cooled and shaped template in the injection mold of the preparation device is pushed by a push plate, so that the template falls off to the support plate and is taken out.

[0014] As a further solution of the present invention, the preparation device includes a bottom plate, a workbench, a work box, a liquid injection mold and a guide plate, the workbench is fixedly connected to the surface of the bottom plate, the work box is fixedly connected to the upper surface of the workbench, the liquid injection mold is fixedly connected to the top of the workbench, the guide plate is fixedly connected to the upper surface of the workbench, and the work box and the guide plate are provided with a flipping assembly for flipping the template;

[0015] The flip assembly includes a guide groove 1, the guide groove 1 symmetrically penetrates and is opened on both sides of the working box, the working box is symmetrically fixedly connected with a limited block, the top of the guide plate is fixedly connected with a fixed rack rod, the inside of the guide plate is slidably connected with a movable plate, the side of the movable plate close to the working box is provided with a guide groove 2, the top of the movable plate is provided with a displacement groove, the inside of the guide groove 2 is slidably connected with a motion rod, and the inside of the displacement groove is slidably connected with a slider;

[0016] The working box is provided with a cutting assembly for removing scraps formed at the liquid injection port of the template, and the cutting assembly includes two support rods, which are symmetrically arranged, and the two support rods are both slidably connected to the guide groove one, and a molding mold is fixedly connected between the two support rods, and a push plate is slidably connected to the inside of the molding mold, and a trigger block is symmetrically fixedly connected to the side of the push plate close to the support plate, and a transmission gear rod is threadedly connected between the molding mold and the push plate, and an arc groove is provided on the surface of the second support rod close to the guide plate side, and a displacement ring is slidably connected to the inside of the arc groove, and a transmission rack rod is slidably connected to the inside of the displacement ring, and the end of the transmission rack rod away from the displacement ring is slidably connected to the molding mold, and the end of the transmission rack rod away from the displacement ring is meshed with the transmission gear rod.

[0017] As a further scheme of the present invention, the flipping assembly also includes a support rod 1, which is symmetrically arranged, and the support rods 1 are all slidably connected to a guide groove 1, a support plate is fixedly connected between the support rods, and a transmission gear 1 is fixedly connected to the surface of the support rod 1 near one end of the guide plate, and the side of the support plate close to the molding mold is arranged in an array and fixedly connected to the flipping rods, and the side of the injection mold close to the middle of the working box is arranged in an array and fixedly connected to the guide rods, and the side of the molding mold away from the support plate is symmetrically provided with guide grooves 3, and the inside of the guide grooves 3 are slidably connected with round-bottom sliding rods, and the end of the round-bottom sliding rod away from the molding mold is fixedly connected to the inner wall of the working box with a telescopic spring, and the inner wall of the working box is fixedly connected with an electric telescopic rod.

[0018] As a further solution of the present invention, the cutting assembly also includes an inner cavity groove, which is opened inside the support plate, and a compression plate is slidably connected inside the inner cavity groove, a compression spring is fixedly connected between the compression plate and the inner wall of the inner cavity groove away from the molding mold, and a sliding rack block is symmetrically fixedly connected on the side of the compression plate close to the compression spring, and a rotating gear rod is symmetrically rotatably connected between the inner cavity grooves, and the sliding rack blocks are meshed with the rotating gear rod, and a transmission rod is rotatably connected between the inner cavity grooves, and a transmission gear 2 is symmetrically fixedly connected on the surface of the transmission rod, a rack-shaped blade is slidably connected on the inner cavity groove, and the bottom of the rack-shaped blade is meshed with the transmission gear 2, and a transmission belt is transmission-connected between the transmission rod and the rotating gear rod.

[0019] As a further solution of the present invention, the movement rod is slidably connected to an end of the slider away from the movable plate, and the support rod 1 between the transmission gear 1 and the support plate passes through the top of the movement rod.

[0020] As a further solution of the present invention, the transmission gear 1 is meshed with the fixed rack rod, and the gear ratio of the transmission gear 1 to the fixed rack rod is four to one.

[0021] As a further solution of the present invention, a circular ring sleeve is provided at one end of the support rod 2 away from the middle of the working box, the limit block is on the movement trajectory of the support rod 2, the circular ring sleeve on the support rod 2 conflicts with the top of the limit block, and the support rod 1 and the support rod 2 are both matched with the size of the guide groove 1.

[0022] As a further solution of the present invention, when the displacement ring slides to the top of the arc groove, the support rod 2 rotates ninety degrees, a thread groove is provided on the side of the push plate close to the transmission gear rod, and a thread is provided on the end of the transmission gear rod close to the push plate, and the thread groove on the push plate matches the thread on the transmission gear rod.

[0023] As a further solution of the present invention, the trigger block matches the inner cavity groove on the support plate, and the position of the rack-shaped blade matches the position of the scrap material of the injection port on the molding mold.

[0024] As a further solution of the present invention, a fixing hole is provided on the molding die, the shapes of the guide rod and the flip rod match the fixing hole on the molding die, and the guide rod and the flip rod are both located on the motion track of the fixing hole on the molding die.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention drives the rack-shaped blade meshing with the transmission gear 2 to move toward the direction close to the molding mold through the rotation of the transmission gear 2, so that the rack-shaped blade cuts the scraps at the injection port on the template, avoiding the existing demoulding work in which the personnel need to cut the scraps on the template after demoulding, thereby reducing the workload of the staff and alleviating the work burden of the staff. At the same time, the uniform cutting ensures the consistency of the appearance of the template.

[0027] 2. The present invention moves the push plate toward the support plate by rotating the transmission gear rod, so that the template is pushed out of the molding mold as a whole, thus avoiding the problem that the appearance of the template after demolding is defective due to the excessive mass of the template when the template is demolded by using a push rod in the existing demolding method, so that the internal structure of the template will not change during the demolding process, thereby ensuring the stability of the overall structure of the template after cooling;

[0028] 3. The present invention causes the template to fall onto the surface of the support plate by the push of the push plate and the gravity of the template itself, thereby avoiding the existing demoulding method in which the template directly contacts the surface of the workbench after demoulding, causing cracks on the surface of the template, ensuring the appearance of the template after demoulding, improving the yield rate of the template after demoulding, reducing the number of unqualified products that are melted and reused, and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic elevation diagram of the overall device of the present invention;

[0030] Figure 2 This is a schematic diagram of the position relationship between the workbench and the injection mold of the present invention;

[0031] Figure 3 It is a schematic cross-sectional view of the present invention as a whole;

[0032] Figure 4 This is a schematic diagram of the positional relationship between the liquid injection mold and the guide rod of the present invention;

[0033] Figure 5 This is a schematic diagram of the position relationship between the support plate and the flip rod of the present invention;

[0034] Figure 6 For the present invention Figure 5 The enlarged schematic diagram at A in the middle;

[0035] Figure 7 This is a schematic diagram of the position relationship between the push plate and the trigger block of the present invention;

[0036] Figure 8 It is a schematic diagram of the position relationship between the transmission rod and the transmission gear of the present invention;

[0037] Fig. 9 For the present invention Figure 8 The enlarged schematic diagram of point B in the middle;

[0038] Fig.10 This is a schematic diagram of the positional relationship between the compression plate and the compression spring of the present invention;

[0039] Fig.11 This is a schematic diagram of the position relationship between the guide groove 3 and the round bottom slide bar of the present invention;

[0040] Fig.12 This is a schematic diagram of the position relationship between the support rod 2 and the molding mold of the present invention;

[0041] Fig.13 It is a schematic diagram of the position relationship between the transmission rack rod and the transmission gear rod of the present invention;

[0042] Fig.14 For the present invention Fig.13 The enlarged schematic diagram at C in the middle;

[0043] Fig.15 This is a schematic diagram of the position relationship between the guide plate and the fixed rack rod of the present invention;

[0044] Fig.16 It is a schematic diagram of the positional relationship between the movable plate and the guide groove of the present invention.

[0045] Figure numerals: 1, bottom plate; 2, workbench; 3, work box; 4, guide groove 1; 5, limit block; 6, injection mold; 7, guide plate; 8, fixed rack rod; 9, movable plate; 10, guide groove 2; 11, displacement groove; 12, motion rod; 13, slider; 14, support rod 1; 15, transmission gear 1; 16, support plate; 17, support rod 2; 18, molding mold; 19, electric telescopic rod; 20, guide rod; 2 1. Flip rod; 22. Inner cavity groove; 23. Rack blade; 24. Transmission rod; 25. Transmission gear 2; 26. Compression plate; 27. Compression spring; 28. Sliding rack block; 29. ​​Rotating gear rod; 30. Transmission belt; 31. Arc groove; 32. Displacement ring; 33. Push plate; 34. Transmission rack rod; 35. Transmission gear rod; 36. Guide groove 3; 37. Round bottom slide rod; 38. Telescopic spring; 39. Trigger block. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figures 1 to 16 As shown, an embodiment of the present invention is provided: a ramie fiber / polypropylene composite material for automobile interior, comprising the following raw materials in parts by weight: 60-80 parts of polypropylene, 5-25 parts of ramie fiber, and 2-5 parts of a compatibilizer;

[0048] The preparation method of the ramie fiber / polypropylene composite material is as follows:

[0049] Step 1: Pretreatment: cleaning, screening and drying the ramie fibers to remove dust and impurities on the surface of the ramie fibers, while screening out larger impurities and loose fibers, and drying the screened ramie fibers;

[0050] Step 2: Mixing: weigh the raw materials in proportion, mix the polypropylene, ramie fiber and compatibilizer, and add them into the feeding hopper of the injection molding machine;

[0051] Step 3: Melting and extruding, the polypropylene, ramie fiber and compatibilizer are mixed and melted to form a molten liquid, and the molten liquid is injected into the injection mold 6 of the preparation device so that the molten liquid fills the injection mold 6;

[0052] Step 4: demoulding. When the molten liquid in the injection mold 6 of the preparation device is cooled and shaped, the cooled and shaped template in the injection mold 6 of the preparation device is pushed by the push plate 33, so that the template falls off to the support plate 16 and is taken out.

[0053] The preparation device includes a bottom plate 1, a workbench 2, a work box 3, a liquid injection mold 6 and a guide plate 7. The workbench 2 is fixedly connected to the surface of the bottom plate 1, the work box 3 is fixedly connected to the upper surface of the workbench 2, the liquid injection mold 6 is fixedly connected to the top of the workbench 2, the guide plate 7 is fixedly connected to the upper surface of the workbench 2, and a flip assembly for flipping the template is provided on the work box 3 and the guide plate 7;

[0054] The flip assembly includes a guide groove 4, which is symmetrically arranged on both sides of the working box 3. The working box 3 is symmetrically fixed with a limited block 5. The top of the guide plate 7 is fixedly connected with a fixed rack rod 8. The guide plate 7 is internally slidably connected with a movable plate 9. The movable plate 9 is provided with a guide groove 2 10 on the side close to the working box 3. The top of the movable plate 9 is provided with a displacement groove 11. The guide groove 2 10 is internally slidably connected with a moving rod 12. The displacement groove 11 is internally slidably connected with a slider 13. The moving rod 12 is penetrated and slidably connected to the slider 13. The flip assembly also includes a support rod 14. The support rods 14 are symmetrically arranged. The support rods 14 are all penetrated and slidably connected in the guide groove 4. A support plate 16 is fixedly connected between the support rods 14. A transmission gear 15 is fixedly connected to the surface of the support rod 14 near one end of the guide plate 7. The transmission gear 15 can be connected with the fixed rack rod 8 The gears 15 and the rack 8 are meshed, and the gear ratio of the transmission gear 15 and the fixed rack rod 8 is four to one. The support rod 14 between the transmission gear 15 and the support plate 16 passes through the top of the moving rod 12. The side of the support plate 16 close to the molding mold 18 is arranged in an array and fixedly connected with a flip rod 21. The side of the injection mold 6 close to the middle of the working box 3 is arranged in an array and fixedly connected with a guide rod 20. The shapes of the guide rod 20 and the flip rod 21 match the fixed holes on the molding mold 18, and the guide rod 20 and the flip rod 21 are both located on the motion trajectory of the fixed holes on the molding mold 18. The side of the molding mold 18 away from the support plate 16 is symmetrically provided with a guide groove three 36. The inside of the guide groove three 36 is slidably connected with a round bottom slide rod 37. The end of the round bottom slide rod 37 away from the molding mold 18 is fixedly connected with the inner wall of the working box 3 with a telescopic spring 38. The inner wall of the working box 3 is fixedly connected with an electric telescopic rod 19.

[0055] Among them: the setting of the guide groove 2 10, the displacement groove 11 and the guide groove 1 4 plays a role in controlling the movement trajectory of the support plate 16, the setting of the transmission gear 15 and the fixed rack rod 8 plays a role in controlling the rotation of the support plate 16 by 90 degrees, and the setting of the limit block 5 plays a role in preventing the molding mold 18 from moving together with the downward movement of the support plate 16 after turning over.

[0056] Better: In the initial state, the movable plate 9 movement rod 12 is located at one end of the guide groove 10 close to the injection mold 6, the slider 13 is located at one end of the displacement groove 11 close to the injection mold 6, the end of the movable plate 9 close to the middle of the guide plate 7 is located on the side of the guide plate 7 close to the injection mold 6, and the support rod 14 is located at the top of the guide groove 4. When the staff drives the movable plate 9 to slide in the direction away from the injection mold 6, the movement rod 12 slides in the guide groove 10 under the restriction of the guide groove 4, so that the support plate 16 fixed to the support rod 14 moves with the downward movement of the movement rod 12, while the slider 13 is stationary. When the movement rod 12 slides When the movable plate 9 reaches the lowest point in the guide groove 10, the movable plate 9 moves, under the action of the shape of the guide groove 14, the moving rod 12 slides horizontally in the guide groove 10 and drives the slider 13 to slide in the displacement groove 11 along with the movement of the moving rod 12, thereby driving the support plate 16 to slide and move horizontally along with the moving rod 12 in the direction away from the injection mold 6. When the flip rod 21 on the support plate 16 contacts the fixed hole on the molding mold 18, the transmission gear 15 on the support rod 14 contacts the fixed rack rod 8. Because the gear ratio of the transmission gear 15 to the fixed rack rod 8 is four to one, the transmission gear 15 passes through the fixed rack rod 8. The rack rod 8 and the support rod 14 fixed with the transmission gear 15 rotate 90 degrees, thereby driving the support plate 16 to rotate 90 degrees, so that the molding die 18 rotates together with the rotation of the support plate 16. At this time, as the movable plate 9 continues to move, the support rod 14 on the moving rod 12 only moves upward through the sliding of the moving rod 12 in the guide groove 10 and under the limiting action of the slider 13, thereby driving the rotated support plate 16 and the molding die 18 thereon to move upward together. When the moving rod 12 moves to the top of this section of the guide groove 10, as the movable plate 9 continues to move, it moves under the limitation of the guide groove 10 and the slider 13. The rod 12 only drives the support rod 14 to move downward until the moving rod 12 slides to the bottom end of the guide groove 2 10. At this time, the external drive device on the movable plate 9 no longer drives the movable plate 9 to move. During this process, the molding mold 18 on the support plate 16 will move downward with the support plate 16 under the action of gravity until the annular sleeve on the support rod 2 17 fixed with the molding mold 18 conflicts with the surface of the limit block 5. At this time, the molding mold 18 no longer moves and the support plate 16 continues to move downward. When the moving rod 12 slides to the bottom end of the guide groove 2 10, the support plate 16 also stops moving. At this time, the staff can collect the template that has fallen off the support plate 16.

[0057] A cutting assembly for removing scraps formed at the injection port of the template is provided in the working box 3, and the cutting assembly includes a support rod 17, which is symmetrically arranged. The support rods 17 are all slidably connected to the guide groove 4, and a circular clamp is provided at the end of the support rod 17 away from the middle of the working box 3. The limit block 5 is on the movement trajectory of the support rod 17, and the circular clamp on the support rod 17 conflicts with the top of the limit block 5. The support rods 14 and the support rods 17 are matched with the size of the guide groove 4. A molding mold 18 is fixedly connected between the support rods 17, and a fixing hole is provided on the molding mold 18. A push plate 33 is slidably connected to the inside of the molding mold 18, and a trigger block 39 is symmetrically fixedly connected to the side of the push plate 33 close to the support plate 16. A transmission gear rod 35 is threadedly connected between the molding die 18 and the push plate 33. A thread groove is provided on one side of the push plate 33 close to the transmission gear rod 35. A thread is provided on one end of the transmission gear rod 35 close to the push plate 33. The thread groove on the push plate 33 matches the thread on the transmission gear rod 35. An arc groove 31 is provided on the surface of the support rod 17 close to the guide plate 7. A displacement ring 32 is slidably connected inside the arc groove 31. When the displacement ring 32 slides to the top of the arc groove 31, the support rod 17 rotates ninety degrees. A transmission rack rod 34 is slidably connected inside the displacement ring 32. The end of the transmission rack rod 34 away from the displacement ring 32 is slidably connected to the molding die 18. The end of the transmission rack rod 34 away from the displacement ring 32 is meshed with the transmission gear rod 35.

[0058] The cutting assembly also includes an inner cavity groove 22, which is opened inside the support plate 16, and the trigger block 39 matches the inner cavity groove 22 on the support plate 16. A compression plate 26 is slidably connected to the interior of the inner cavity groove 22, and a compression spring 27 is fixedly connected between the compression plate 26 and the inner wall of the inner cavity groove 22 away from the molding mold 18, and a sliding rack block 28 is symmetrically fixedly connected on one side of the compression plate 26 close to the compression spring 27. A rotating gear rod 29 is symmetrically rotatably connected between the inner cavity grooves 22, and the sliding rack blocks 28 are all meshed with the rotating gear rod 29. A transmission rod 24 is rotatably connected between the inner cavity grooves 22, and a transmission gear 25 is symmetrically fixedly connected to the surface of the transmission rod 24. A rack-shaped blade 23 is slidably connected to the inner cavity groove 22, and the position of the rack-shaped blade 23 matches the position of the scrap material of the liquid injection port on the molding mold 18. The bottom of the rack-shaped blade 23 is meshed with the transmission gear 25, and a transmission belt 30 is transmission-connected between the transmission rod 24 and the rotating gear rod 29.

[0059] Among them, the arrangement of the arc groove 31, the displacement ring 32 and the transmission rack rod 34 enables the displacement ring 32 to slide in the arc groove 31 and drive the transmission rack rod 34 to slide when the molding mold 18 rotates with the support plate 16. The arrangement of the transmission gear rod 35 enables the push plate 33 to make the template fall off. The arrangement of the trigger block 39 enables the compression plate 26 to make the rack-shaped blade 23 cut the scraps of the liquid injection port on the template.

[0060] The second support rod 17 is connected to the second support rod 17, and the second support rod 17 is connected to the second support rod 17. The second support rod 17 is connected to the second support rod 17, and the second support rod 17 is connected to the second support rod 17. The second support rod 17 is connected to the second support rod 17, and the second support rod 17 is connected to the second support rod 17. The second support rod 17 is connected to the second support rod 17, and the second support rod 17 is connected to the second support rod 17. The second support rod 17 is connected to the second support rod 17, and the second support rod 17 is connected to the second support rod 17. The second support rod 17 is connected to the second support rod 17, and the second support rod 17 is connected to the second support rod 17. The template on the molding die 18 moves toward the direction close to the support plate 16. When the push plate 33 moves, the trigger block 39 fixed to the push plate 33 is displaced together with the movement of the push plate 33, and then the movement of the trigger block 39 contacts the compression plate 26, so that the compression plate 26 moves in the inner cavity groove 22 in the direction away from the molding die 18 and elastically compresses the compression spring 27. During the movement of the compression plate 26, the sliding rack block 28 fixed to the compression plate 26 moves together with the movement of the compression plate 26, thereby driving the rotating gear rod 29 meshing therewith to rotate. The rotation of the rotating gear rod 29 causes the transmission rod 24 to rotate in the inner cavity groove 22 through the transmission of the transmission belt 30, thereby driving the transmission gear 25 fixed on the transmission rod 24 to rotate together. The rotation of the transmission gear 25 drives the rack-shaped blade 23 meshing therewith to move toward the direction close to the molding die 18, thereby causing the rack-shaped blade 23 to cut the scraps at the liquid injection port on the template.

[0061] The above implementation works as follows:

[0062] The initialization steps are as follows: the movable plate 9 movement rod 12 is located at one end of the guide groove 2 10 close to the injection mold 6, the slider 13 is located at one end of the displacement groove 11 close to the injection mold 6, the end of the movable plate 9 close to the middle of the guide plate 7 is located on the side of the guide plate 7 close to the injection mold 6, the support rod 14 is located at the top of the guide groove 14, the support rod 2 17 is located at the end of the guide groove 4 away from the injection mold 6, the annular sleeve on the support rod 2 17 conflicts with the top of the limit block 5, and the electric telescopic rod 19 is in a fully retracted state.

[0063] The working steps are as follows:

[0064] like Figures 1 to 4 As shown:

[0065] The staff starts the electric telescopic rod 19, and the electric telescopic rod 19 starts and begins to extend. As the electric telescopic rod 19 extends, the electric telescopic rod 19 will conflict with the molding mold 18 and drive the molding mold 18 to move toward the direction close to the injection mold 6. Because the support rod 217 fixed on the molding mold 18 slides in the guide groove 14, the telescopic spring 38 begins to elastically extend as the molding mold 18 moves in this process, until the guide rod 20 on the injection mold 6 passes through the fixed hole on the molding mold 18, and the molding mold 18 conflicts with the injection mold 6. At this time, the electric telescopic rod 19 no longer continues to extend and remains stationary. The staff operates the injection molding machine to inject the molten composite material into the molding mold 18 and the injection mold 6, when the composite material melt in the mold space cools to form a template, the staff starts the electric telescopic rod 19, and the electric telescopic rod 19 starts and begins to shrink. As the electric telescopic rod 19 shrinks, the telescopic spring 38 begins to elastically shrink. At this time, the molding mold 18 moves in a direction away from the injection mold 6 as the telescopic spring 38 elastically shrinks. As the molding mold 18 separates from the injection mold 6, the template is now located in the molding mold 18 until the molding mold 18 is located at one end of the guide groove 4 away from the injection mold 6. At this time, the telescopic spring 38 is stationary, and the electric telescopic rod 19 continues to shrink until the electric telescopic rod 19 is completely retracted. The operator then closes the electric telescopic rod 19.

[0066] like Figure 4 , Figure 5 and Fig.16 As shown:

[0067] When the staff drives the movable plate 9 to slide in the direction away from the injection mold 6, the moving rod 12 slides in the guide groove 2 10 under the restriction of the guide groove 1 4, so that the support plate 16 fixed to the support rod 14 moves with the downward movement of the moving rod 12 while the slider 13 remains stationary. When the moving rod 12 slides to the low point in the guide groove 2 10, with the movement of the movable plate 9, under the action of the shape of the guide groove 1 4, the moving rod 12 slides horizontally in the guide groove 2 10 and drives the slider 13 to slide in the displacement groove 11 together with the movement of the moving rod 12, and then The support plate 16 is driven to slide and move horizontally along with the motion rod 12 in the direction away from the injection mold 6. When the flip rod 21 on the support plate 16 contacts the fixed hole on the molding mold 18, the transmission gear 15 on the support rod 14 contacts the fixed rack rod 8. Because the gear ratio of the transmission gear 15 and the fixed rack rod 8 is four to one, the transmission gear 15 passes through the fixed rack rod 8 and the support rod 14 fixed with the transmission gear 15 and rotates ninety degrees, thereby driving the support plate 16 to rotate ninety degrees, so that the molding mold 18 rotates together with the rotation of the support plate 16.

[0068] like Figures 4 to 16 As shown:

[0069] In the process of the molding die 18 rotating with the support plate 16, the support rod 2 17 fixed to the molding die 18 also rotates 90 degrees with the molding die 18. Because the transmission rack rod 34 slides in the molding die 18, and because the displacement ring 32 slides in the arc groove 31 on the support rod 2 17, as the support rod 2 17 and the molding die 18 rotate, the end of the transmission rack rod 34 sliding in the displacement ring 32 will rotate with the rotation of the molding die 18. At the same time, the rotation of the support rod 2 17 drives the displacement ring 32 thereon to move in the direction close to the movable plate 9 under the action of the arc groove 31, thereby driving the transmission rack rod 34 to slide in the direction close to one end of the displacement ring 32, thereby causing the transmission rack rod 34 to slide in the direction close to ... The transmission gear rod 35 meshed with the rack rod 34 rotates, and the threaded meshing between the transmission gear rod 35 and the push plate 33 causes the push plate 33 to move toward the direction close to the support plate 16 as the transmission gear rod 35 rotates, thereby pushing the template on the molding die 18 to move toward the direction close to the support plate 16. The rotation of the transmission gear rod 35 causes the push plate 33 to move toward the direction close to the support plate 16, so that the entire template is pushed out of the molding die 18, thereby avoiding the problem of defects in the appearance of the template after demolding due to excessive mass of the template when the template is demolded using a push rod in the existing demolding method, so that the internal structure of the template will not change during the demolding process, thereby ensuring the stability of the overall structure of the template after cooling;

[0070] As the push plate 33 moves, the trigger block 39 fixed to the push plate 33 moves together with the movement of the push plate 33, and then the movement of the trigger block 39 contacts the compression plate 26, so that the compression plate 26 moves in the inner cavity groove 22 in the direction away from the molding die 18 and elastically compresses the compression spring 27. In the process of the movement of the compression plate 26, the sliding rack block 28 fixed to the compression plate 26 moves together with the movement of the compression plate 26, thereby driving the rotating gear rod 29 meshing with it to rotate. The rotation of the rotating gear rod 29 is transmitted by the transmission belt 30 so that the transmission rod 2 The toothed plate 24 rotates in the inner cavity groove 22, thereby driving the transmission gear 25 fixed on the transmission rod 24 to rotate together. The rotation of the transmission gear 25 drives the rack-shaped blade 23 meshed with the transmission gear 25 to move toward the direction close to the molding die 18, thereby causing the rack-shaped blade 23 to cut the scraps at the injection port on the template, thereby avoiding the need for the staff to cut the scraps on the template after demolding the template in the existing demoulding work, reducing the workload of the staff and relieving the staff's work burden. At the same time, the uniform cutting ensures the consistency of the template appearance.

[0071] During the flipping process of the molding die 18, the round bottom slide bar 37 in the guide groove three 36 slides in the guide groove three 36 under the action of the elastic contraction of the telescopic spring 38 until the molding die 18 flips ninety degrees. At this time, the round bottom slide bar 37 is located at the other end of the guide groove three 36, and the telescopic spring 38 is stationary.

[0072] like Figures 1 to 4 , Figure 7 and Fig.16 As shown:

[0073] When the support plate 16 and the molding mold 18 are turned over 90 degrees, the template falls onto the surface of the support plate 16 under the push of the push plate 33 and the action of its own gravity, thereby avoiding the template directly contacting the surface of the workbench 2 after demolding in the existing demolding method, resulting in cracks on the surface of the template, ensuring the appearance of the template after demolding, improving the yield rate of the template after demolding, reducing the number of unqualified products melted and reused, and reducing production costs;

[0074] At this time, as the movable plate 9 continues to move, the moving rod 12 slides in the guide groove 2 10 and the support rod 14 on the moving rod 12 only moves upward under the limiting action of the slider 13, thereby driving the rotated support plate 16 and the molding mold 18 thereon to move upward together. When the moving rod 12 moves to the top of this section of the guide groove 2 10, as the movable plate 9 continues to move, the moving rod 12 only drives the support rod 14 to move downward under the limitation of the guide groove 2 10 and the slider 13, until the moving rod 12 slides to the bottom end of the guide groove 2 10, at this time, the external drive device on the movable plate 9 no longer drives the movable plate 9 to move. In this process, the molding mold 18 on the support plate 16 will move downward together with the support plate 16 under the action of gravity until it is fixed to the support rod 2 17 fixed to the molding mold 18 The annular sleeve contacts the surface of the limit block 5. At this time, the molding die 18 no longer moves and the support plate 16 continues to move downward. As the support plate 16 continues to move downward, the trigger block 39 no longer squeezes the compression plate 26. Under the elastic release of the compression spring 27, the compression plate 26 returns to its initial position, and the sliding rack block 28 fixed to the compression plate 26 also returns to its initial position, causing the rotating gear rod 29 to rotate in the opposite direction, thereby causing the transmission belt 30 to transmit in the opposite direction, causing the transmission rod 24 to rotate in the opposite direction along with the reverse transmission of the transmission belt 30, thereby causing the transmission gear 25 on the transmission rod 24 to rotate in the opposite direction, causing the rack-shaped blade 23 to return to its initial position. When the moving rod 12 slides to the bottom of the guide groove 2 10, the support plate 16 also remains stationary. At this time, the staff can collect the template that has fallen off the support plate 16.

[0075] like Figures 1 to 16 As shown:

[0076] When the staff takes out the template on the support plate 16, the staff drives the movable plate 9 to move in the direction close to the injection mold 6. At this time, the movable plate 9 slides in the direction away from the injection mold 6 under the drive of the external drive device. Through the shape of the guide groove 2 10 and the restrictions of the slider 13 and the guide groove 1 4, the moving rod 12 only moves upward, thereby driving the support plate 16 to move upward and drive the support plate 16 to contact the molding mold 18. At the same time, the molding mold 18 moves upward with the support plate 16 under the contact of the support plate 16. As the movable plate 9 continues to move, the moving rod 12 continues to slide in the guide groove 2 10. Under the action of the guide groove 1 4 and the slider 13, the support plate 16 and the molding mold 18 move downward together until the annular sleeve on the support rod 2 17 contacts the surface of the limit block 5. When the movable plate 9 continues to move, the moving rod 12 As the movable plate 9 continues to move, the moving rod 12 will contact the fixed rack rod 8, causing the support plate 16 and the molding mold 18 thereon to rotate in the opposite direction by 90 degrees, and as the movable plate 9 moves, the slider 13 is driven to slide in the displacement groove 11 toward the end close to the injection mold 6, and the displacement ring 32 returns to the initial position through the reverse rotation of the molding mold 18, thereby causing the transmission rack rod 34 to slide in the opposite direction, causing the transmission gear rod 35 to rotate in the opposite direction to cause the push plate 33 to slide in the direction close to the molding mold 18, and as the movable plate 9 continues to move, the support rod 14 on the moving rod 12 only moves upward under the restriction of the guide groove 4 and the slider 13 until the support plate 16 returns to the initial position, at which time the staff stops driving the movable plate 9 to operate, and the staff can demold the next round of templates.

[0077] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0078] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A preparation device for ramie fiber / polypropylene composite materials for automobile interior, characterized in that: The invention comprises a bottom plate (1), a workbench (2), a work box (3), a liquid injection mold (6) and a guide plate (7), wherein the workbench (2) is fixedly connected to the surface of the bottom plate (1), the work box (3) is fixedly connected to the upper surface of the workbench (2), the liquid injection mold (6) is fixedly connected to the top of the workbench (2), the guide plate (7) is fixedly connected to the upper surface of the workbench (2), and a flipping assembly for flipping the template is provided on the work box (3) and the guide plate (7); The flip assembly comprises a guide groove 1 (4), the guide groove 1 (4) symmetrically extending through both sides of the working box (3), a limit block (5) symmetrically fixedly connected to the working box (3), a fixed rack rod (8) fixedly connected to the top of the guide plate (7), a movable plate (9) slidably connected inside the guide plate (7), a guide groove 2 (10) formed on a side of the movable plate (9) close to the working box (3), a displacement groove (11) formed on the top of the movable plate (9), a moving rod (12) slidably connected inside the guide groove 2 (10), and a slider (13) slidably connected inside the displacement groove (11); The working box (3) is provided with a cutting assembly for removing scraps formed at the injection port of the template, the cutting assembly includes two support rods (17), the two support rods (17) are symmetrically arranged, the two support rods (17) are both slidably connected to the guide groove (4), a molding die (18) is fixedly connected between the two support rods (17), a push plate (33) is slidably connected inside the molding die (18), a trigger block (39) is symmetrically fixedly connected to one side of the push plate (33) close to the support plate (16), and the molding die (18) is fixedly connected to the push plate (33). 8) is threadedly connected to a transmission gear rod (35) between the push plate (33), an arc groove (31) is provided on the surface of the second support rod (17) near the side of the guide plate (7), a displacement ring (32) is slidably connected inside the arc groove (31), a transmission rack rod (34) is slidably connected inside the displacement ring (32), an end of the transmission rack rod (34) away from the displacement ring (32) is slidably connected to the molding mold (18), and an end of the transmission rack rod (34) away from the displacement ring (32) is meshed with the transmission gear rod (35); The flip assembly also includes support rods (14), the support rods (14) are symmetrically arranged, the support rods (14) are all slidably connected to the guide groove (4), a support plate (16) is fixedly connected between the support rods (14), a transmission gear (15) is fixedly connected to the surface of the support rods (14) near one end of the guide plate (7), and a flip rod (21) is fixedly connected to the side of the support plate (16) near the molding mold (18) in an array arrangement. The injection mold (6 ) is fixedly connected to a guide rod (20) arranged in an array on one side close to the middle of the working box (3); a guide groove (36) is symmetrically provided on the side of the molding die (18) away from the support plate (16); a round bottom slide rod (37) is slidably connected inside the guide groove (36); a telescopic spring (38) is fixedly connected between the end of the round bottom slide rod (37) away from the molding die (18) and the inner wall of the working box (3); and an electric telescopic rod (19) is fixedly connected to the inner wall of the working box (3); The cutting assembly further comprises an inner cavity groove (22), wherein the inner cavity groove (22) is disposed inside the support plate (16), a compression plate (26) is slidably connected inside the inner cavity groove (22), a compression spring (27) is fixedly connected between the compression plate (26) and the inner wall of the inner cavity groove (22) away from the molding die (18), a sliding rack block (28) is symmetrically fixedly connected to one side of the compression plate (26) close to the compression spring (27), and a rotating gear rod is symmetrically rotatably connected between the inner cavity grooves (22). (29), the sliding rack blocks (28) are all meshed with the rotating gear rod (29), a transmission rod (24) is rotatably connected between the inner cavity groove (22), a transmission gear 2 (25) is symmetrically fixedly connected to the surface of the transmission rod (24), a rack-shaped blade (23) is slidably connected to the inner cavity groove (22), the bottom of the rack-shaped blade (23) is meshed with the transmission gear 2 (25), and a transmission belt (30) is transmission-connected between the transmission rod (24) and the rotating gear rod (29).

2. The preparation device of the ramie fiber / polypropylene composite material for automobile interior decoration according to claim 1, characterized in that: The moving rod (12) is slidably connected to an end of the slider (13) away from the movable plate (9), and the supporting rod (14) between the transmission gear (15) and the support plate (16) passes through the top of the moving rod (12).

3. The preparation device of the ramie fiber / polypropylene composite material for automobile interior decoration according to claim 1, characterized in that: The transmission gear one (15) is meshed with the fixed rack rod (8), and the gear ratio of the transmission gear one (15) to the fixed rack rod (8) is four to one.

4. The preparation device of the ramie fiber / polypropylene composite material for automobile interior decoration according to claim 1, characterized in that: A circular clamping sleeve is provided at one end of the support rod 2 (17) away from the middle of the working box (3); the limit block (5) is located on the movement trajectory of the support rod 2 (17); the circular clamping sleeve on the support rod 2 (17) abuts against the top end of the limit block (5); and the support rod 1 (14) and the support rod 2 (17) both match the size of the guide groove 1 (4).

5. The device for preparing the ramie fiber / polypropylene composite material for automobile interior decoration according to claim 1, characterized in that: When the displacement ring (32) slides to the top end of the arc groove (31), the second support rod (17) rotates 90 degrees, and a thread groove is provided on one side of the push plate (33) close to the transmission gear rod (35), and a thread is provided on one end of the transmission gear rod (35) close to the push plate (33), and the thread groove on the push plate (33) matches the thread on the transmission gear rod (35).

6. The preparation device of the ramie fiber / polypropylene composite material for automobile interior decoration according to claim 1, characterized in that: The trigger block (39) matches the inner cavity groove (22) on the support plate (16), and the position of the rack-shaped blade (23) matches the position of the liquid injection port scrap on the molding die (18).

7. The device for preparing the ramie fiber / polypropylene composite material for automobile interior decoration according to claim 1, characterized in that: The molding die (18) is provided with a fixing hole, the shapes of the guide rod (20) and the flip rod (21) match the fixing hole on the molding die (18), and the guide rod (20) and the flip rod (21) are both located on the movement track of the fixing hole on the molding die (18).

8. A ramie fiber / polypropylene composite material for automobile interior, manufactured by using the preparation device of a ramie fiber / polypropylene composite material for automobile interior according to any one of claims 1 to 7, characterized in that: Specifically: The invention is made of the following raw materials in parts by weight: 60-80 parts of polypropylene, 5-25 parts of ramie fiber and 2-5 parts of compatibilizer; The preparation method of the ramie fiber / polypropylene composite material is as follows: Step 1: Pretreatment: washing, screening and drying the ramie fibers to remove dust and impurities on the surface of the ramie fibers, screening out loose fibers, and drying the screened ramie fibers; Step 2: Mixing: weigh the raw materials in proportion, mix the polypropylene, ramie fiber and compatibilizer, and add them into the feeding hopper of the injection molding machine; Step 3: Melting and extruding, the polypropylene, ramie fiber and compatibilizer are mixed and melted to form a molten liquid, and the molten liquid is injected into the injection mold (6) of the preparation device so that the molten liquid fills the injection mold (6); Step 4: demoulding. When the molten liquid in the injection mold (6) is cooled and shaped, the mold plate that has been cooled and shaped in the injection mold (6) is pushed by the push plate (33) so that the mold plate falls off onto the support plate (16) and is taken out.

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