Automobile plastic composite sheet pressing equipment and preparation method

Abstract

The present invention belongs to the technical field of preparing plastic composite panels, and in particular discloses a pressing device and a preparation method for automobile plastic composite panels, comprising a compression molding box, the top and one side of the compression molding box are both open, a protective cover plate is arranged at the top of the compression molding box near one side edge, a transmission cavity is arranged at the front side of the compression molding box, and a driving component is arranged inside the transmission cavity; the present invention, by arranging a feeding component, molten plastic can be injected into the interior of the molding box, so that a fiber-filled structural frame and the molten plastic can be combined with each other, by arranging a compacting component, the preformed plate can be compacted during discharging, and the tightness of the connection between the fiber-filled structural frame and the molten plastic can be improved, the excess material pressed out by the compacting component can be discharged by the discharging component, and the feeding component, the compacting component and the discharging component can be driven to work synchronously by arranging the driving component.

Description

Technical Field

[0001] The invention relates to the technical field of plastic composite board preparation, and in particular to a plastic composite board pressing device for automobiles and a preparation method thereof. Background Art

[0002] Composite plastics are a general term for plastics made of hard plastics and soft plastics, solid plastics and foam plastics. With the rapid development of the automobile industry, the requirements for the quality, environmental protection and safety indicators of automobile interior decoration parts are getting higher and higher. The quality of interior decoration parts depends on their composite substrates. Existing automobile plastic composite sheets are mostly produced by injection molding. Pure plastic injection molding will result in the production of brittle sheets. Therefore, in order to improve their comprehensive performance, fiber structures need to be filled inside the produced automobile plastic composite sheets.

[0003] At present, in the process of injection molding of automobile plastic composite panels, it is necessary to pre-set a fiber filling structure inside the mold. The fiber filling structure will expand when heated, causing the molten plastic inside the mold to overflow. In addition, the molten plastic is not compact after solidification, affecting the strength of the panel after molding. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present invention provides an automobile plastic composite plate pressing device and a preparation method.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automobile plastic composite sheet pressing device, comprising a compression molding box, the top and one side of the compression molding box are open, a protective cover plate is arranged at the top of the compression molding box near one side edge, a transmission cavity is arranged at the front side of the compression molding box, a driving assembly is arranged inside the transmission cavity, a molding box is fixed between the inner walls of both sides of the compression molding box, a feeding assembly is arranged inside the molding box, a compacting assembly is arranged on the top of the molding box, and a discharge assembly is arranged between the transmission cavity and the molding box;

[0006] A support plate is fixed between the inner walls of the compression molding box on one side close to the molding box, the support plate is connected to one side of the molding box, one side of the molding box is open, and an opening is provided on the other side of the molding box near the bottom edge, and guide openings are provided on the inner bottom surface of the molding box and the inner bottom surface of the support plate, the two guide openings are connected to each other, the guide opening on the molding box is connected to the inside of the opening, and a side opening is provided on the inner wall of one side of the molding box near the corner.

[0007] Preferably, the driving assembly includes a motor, a vertical plate is fixed to the inner bottom surface of the transmission cavity, the motor is installed on the top of the vertical plate, a rocker arm is fixed to the output end of the motor, a lever is fixed to one end of the rocker arm, a first sliding opening is provided on the rear inner wall of the transmission cavity near the top edge, and a second sliding opening is provided on the rear inner wall of the transmission cavity near the bottom edge, and both the first sliding opening and the second sliding opening extend through the interior of the compression molding box.

[0008] Preferably, the first sliding mouth is slidably connected to the inside of the first sliding mouth, the second sliding mouth is slidably connected to the inside of the second sliding mouth, a first rack is fixed to the front side of the first slider, a second rack is fixed to the front side of the second slider, the first rack and the second rack are both located inside the transmission cavity, the rear inner wall of the transmission cavity is rotatably connected to a transition gear, the first rack is meshed with the top of the transition gear, and the second rack is meshed with the bottom of the transition gear.

[0009] Preferably, a waist-shaped frame is fixed to the front side of the first rack near one end edge, the bottom of the waist-shaped frame extends vertically downward, the shift rod is slidably engaged between the inner walls on both sides of the waist-shaped frame, and the rear surface of the waist-shaped frame is located in front of the front surface of the transition gear.

[0010] Preferably, the feeding assembly includes a buffer cavity, which is provided inside the compression molding box near the rear edge, a feed pipe is fixed to the rear side of the compression molding box, the feed pipe and the buffer cavity are communicated with each other, a side flow channel is provided inside the molding box near the bottom edge, one end of the side flow channel penetrates into the buffer cavity, the other end of the side flow channel penetrates into the guide port, a guide plate is slidably connected between the inner walls on both sides of the guide port, a bending hole is provided inside the guide plate, one end of the bending hole penetrates into the top of the guide plate, the other end of the bending hole penetrates into one side of the guide plate and is relatively communicated with the other end of the side flow channel, a side connecting rod is fixed at the bottom of the guide plate near one end edge, one end of the side connecting rod is fixed to the second slider, two constraint plates are fixed on the top of the guide plate, and the two constraint plates are slidably connected between the inner walls of the molding box.

[0011] Preferably, the discharge assembly includes a U-shaped slide, a shifting cavity is provided at the inner bottom surface of the first slide near one side edge, a reciprocating cavity is provided at the inner bottom surface of the shifting cavity near one side edge, a U-shaped groove is provided at the inner bottom surface of the reciprocating cavity, the inner bottom surface of the U-shaped groove is recessed downward near both side edges, the U-shaped slide is slidably connected between the inner walls of the U-shaped groove, and both ends of the bottom of the U-shaped slide extend correspondingly to the recessed parts of the inner bottom surface of the U-shaped groove.

[0012] Preferably, a discharge channel is provided on the side wall of the compression molding box near the front edge, one end of the discharge channel passes through the interior of the transmission cavity, the other end of the discharge channel passes through the interior of the compression molding box and is interconnected with the side opening, the discharge channel is interconnected with the U-shaped groove, the middle of the bottom of the U-shaped slide plate is located above the interior of the discharge channel, a trapezoidal block is fixed to the top of the U-shaped slide plate, the trapezoidal block is located inside the reciprocating cavity, the bottom of the trapezoidal block is located at the four corners, and second springs are fixed, and the bottoms of multiple second springs are fixed to the inner bottom surface of the reciprocating cavity, a paddle plate is fixed to the bottom of the first slider, the paddle plate is located inside the paddle cavity, and the bottom of the paddle plate extends to one side of the trapezoidal block.

[0013] Preferably, the compacting assembly includes a pressure plate, which is slidably arranged between the front and rear inner walls of the forming box near the top edge, and the top of the forming box is fixed with support plates at four corners, and the bottoms of multiple support plates are installed with fixed sleeves, and the interiors of multiple fixed sleeves are slidably connected with circular plates, and the top of the pressure plate is fixed with guide rods at four corners, and multiple guide rods slide through the interior of the fixed sleeve and are fixedly connected to the bottom of the circular plate accordingly, and a first spring is fixed between the bottoms of multiple circular plates and the inner bottom surface of the fixed sleeve.

[0014] Preferably, a support frame is provided inside the compression molding box, a pre-pressing roller is rotatably connected between the inner walls of the support frame, one end of the support frame is fixed to the outer surface of one side of the first slider, a compacting roller is rotatably connected between the inner walls on both sides of the compression molding box, the compacting roller is located on one side of the pre-pressing roller, a driving cavity is opened inside the compression molding box near the front edge, a friction wheel is rotatably connected between the inner walls on both sides of the driving cavity, one end of the compacting roller slides through the interior of the driving cavity and is fixed to one end of the friction wheel, a friction strip is fixed to one end of the first slider, one end of the friction strip slides through the interior of the driving cavity and is frictionally fitted with the friction wheel.

[0015] The present invention also provides a method for preparing an automobile plastic composite plate, which is applied to an automobile plastic composite plate pressing device. The method for preparing an automobile plastic composite plate comprises the following steps:

[0016] Step S1: Put the woven fiber-filled structural frame into the molding box, and then drive the whole device to work through the driving component. When working, the molten plastic is injected into the molding box through the feeding component, so that the fiber-filled structural frame and the molten plastic can be combined with each other, and when discharging, the compacting component is used to compact it to ensure that the inside of the molded plate is tight, and the excess material pressed out by the compacting component is discharged during the discharging process through the discharging component;

[0017] Step S2: When the driving assembly is working, the motor drives the swing rod to rotate, and during the rotation of the swing rod, the waist-shaped frame is driven to swing back and forth, thereby driving the first rack to reciprocate and drive the transition gear to rotate, and then drive the second rack to reciprocate, wherein the reciprocating swing directions of the first rack and the second rack are opposite;

[0018] Step S3: When the feeding assembly is working, the molten plastic flows into the buffer cavity through the feeding pipe, flows into the bending hole through the side flow channel inside the buffer cavity, and finally flows into the interior of the molding box from the bending hole;

[0019] Step S4: when the compacting component is working, when the feeding component pushes the preformed plate outward, the pre-pressing roller presses the pressing plate, thereby compacting the preformed plate as a whole, so that the interior of the plate is more compact after being formed;

[0020] Step S5: When the discharge component is working, when the compacting component compacts the preformed panels, the excess material will be pressed into the discharge channel for discharge, so as to prevent the formation of a closed volume cavity inside the molding box, which would make it impossible to compact the preformed panels inside.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention can inject molten plastic into the molding box by setting a feeding component, so that the fiber-filled structural frame and the molten plastic can be combined with each other. By setting a compacting component, the preformed plate can be compacted when discharging, thereby improving the tightness of the connection between the fiber-filled structural frame and the molten plastic. The excess material pressed out by the compacting component can be discharged by the discharging component. By setting a driving component, the feeding component, the compacting component and the discharging component can be driven to work synchronously.

[0023] 2. The present invention can inject molten plastic into the molding box by arranging a feeding assembly, so that the fiber-filled structural frame and the molten plastic can be combined with each other. When the feeding assembly is working, the molten plastic flows into the buffer cavity through the feeding pipe, flows into the bending hole through the side flow channel inside the buffer cavity, and finally flows into the molding box from the bending hole;

[0024] 3. The present invention can compact the preformed plate when discharging by arranging a compacting component, thereby improving the tightness of the connection between the fiber-filled structural frame and the molten plastic. When the compacting component is working, when the feeding component pushes the preformed plate to the outside, the pre-pressing roller presses the pressing plate, thereby compacting the preformed plate as a whole, making the inside of the plate more compact after forming;

[0025] 4. The present invention can discharge excess material pressed out by the compacting component through the discharge component. When the discharge component is working, when the compacting component compacts the preformed plate, the excess material will be pressed into the discharge channel for discharge, thereby preventing the formation of a closed volume cavity inside the molding box, which makes it impossible to compact the preformed plate inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The present invention provides a schematic diagram of the main three-dimensional structure of a plastic composite sheet pressing device for automobiles;

[0027] Figure 2 The present invention provides a bottom-up stereoscopic structural schematic diagram of an automobile plastic composite sheet pressing device;

[0028] Figure 3 The present invention provides a schematic diagram of a three-dimensional structure of a side section of a plastic composite sheet pressing device for automobiles;

[0029] Figure 4 The present invention provides a schematic diagram of a three-dimensional structure of a cross-sectional view from another side of a plastic composite sheet pressing device for automobiles;

[0030] Figure 5 The present invention provides a partially cutaway three-dimensional structural schematic diagram of one side of a plastic composite sheet pressing device for automobiles;

[0031] Figure 6 The present invention provides a schematic diagram of a partially cutaway three-dimensional structure of another side of a plastic composite sheet pressing device for automobiles;

[0032] Figure 7 The present invention provides a partial cross-sectional three-dimensional structural schematic diagram of a molding box in a plastic composite sheet pressing device for automobiles;

[0033] Figure 8 For the present invention Figure 3 A partial enlarged view of point A in the middle;

[0034] Fig. 9 For the present invention Figure 5 A partial enlarged view of point B in the middle;

[0035] Fig.10 For the present invention Figure 6 A magnified partial view of point C in the middle.

[0036] In the figure: 1, compression box; 2, transmission chamber; 3, vertical plate; 4, transition gear; 5, rocker; 6, motor; 7, waist frame; 8, second rack; 9, first rack; 10, protective cover; 11, first slide; 12, lever; 13, feed pipe; 14, support plate; 15, guide port; 16, first slider; 17, second slider; 18, side connecting rod; 19, guide plate; 20, compacting roller; 21, molding box; 22, support frame; 23, pre-pressing roller; 24, compacting Plate; 25, support plate; 26, side opening; 27, constraint plate; 28, buffer chamber; 29, side flow channel; 30, bending hole; 31, toggle chamber; 32, fixing sleeve; 33, guide rod; 34, circular plate; 35, first spring; 36, discharge flow channel; 37, U-shaped groove; 38, U-shaped slide plate; 39, toggle plate; 40, drive chamber; 41, friction wheel; 42, friction strip; 43, reciprocating chamber; 44, trapezoidal block; 45, second spring; 46, second slide; 47, opening. DETAILED DESCRIPTION

[0037] 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 implementation regulations described 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.

[0038] See also Figure 1-10 The present invention provides a technical solution: an automobile plastic composite sheet pressing device, comprising a compression molding box 1, the top and one side of the compression molding box 1 are open, a protective cover plate 10 is arranged near one side edge of the top of the compression molding box 1, a transmission cavity 2 is arranged at the front side of the compression molding box 1, a driving component is arranged inside the transmission cavity 2, a molding box 21 is fixed between the inner walls of both sides of the compression molding box 1, a feeding component is arranged inside the molding box 21, a compacting component is arranged on the top of the molding box 21, and a discharge component is arranged between the transmission cavity 2 and the molding box 21;

[0039] A support plate 14 is fixed between the inner walls of the compression molding box 1 on one side close to the molding box 21, the support plate 14 is connected to one side of the molding box 21, one side of the molding box 21 is open, and an opening 47 is provided on the other side of the molding box 21 near the bottom edge, and guide openings 15 are provided on the inner bottom surfaces of the molding box 21 and the support plate 14, the two guide openings 15 are connected to each other, the guide opening 15 on the molding box 21 is connected to the inside of the opening 47, and a side opening 26 is provided on the inner wall of one side of the molding box 21 near the corner.

[0040] The effect achieved is that, by setting up a feeding component, molten plastic can be injected into the molding box 21, so that the fiber-filled structural frame and the molten plastic can be combined with each other; by setting up a compacting component, the preformed panel can be compacted when discharging, thereby improving the tightness of the connection between the fiber-filled structural frame and the molten plastic; the excess material pressed out by the compacting component can be discharged by the discharging component; by setting up a driving component, the feeding component, the compacting component and the discharging component can be driven to work synchronously; a support plate 14 is fixed between the inner walls of the compression molding box 1 on one side of the molding box 21; the preformed panel pushed out by the feeding component can be guided and supported by the support plate 14 to prevent the preformed panel just pushed out from being deformed; at the same time, a guide port 15 is opened on the inner bottom surface of the molding box 21 and the support plate 14 to facilitate the sliding installation of the guide plate 19, and the guide plate 19 is used to facilitate the subsequent control of the on and off of the feeding component.

[0041] like Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, the driving assembly includes a motor 6, a vertical plate 3 is fixed to the inner bottom surface of the transmission cavity 2, the motor 6 is installed on the top of the vertical plate 3, a swing rod 5 is fixed to the output end of the motor 6, and a lever 12 is fixed to one end of the swing rod 5. A first sliding opening 11 is opened near the top edge of the rear inner wall of the transmission cavity 2, and a second sliding opening 46 is opened near the bottom edge of the rear inner wall of the transmission cavity 2. The first sliding opening 11 and the second sliding opening 46 both penetrate into the interior of the compression molding box 1, and the first sliding opening 11 is slidably connected to the first slider 16, and the second sliding opening 46 is slidably connected to the second slider 17. The first slider A first rack 9 is fixed to the front side of 16, and a second rack 8 is fixed to the front side of the second slider 17. Both the first rack 9 and the second rack 8 are located inside the transmission chamber 2. The rear inner wall of the transmission chamber 2 is rotatably connected with the transition gear 4. The first rack 9 is meshed with the top of the transition gear 4, and the second rack 8 is meshed with the bottom of the transition gear 4. A waist-shaped frame 7 is fixed to the front side of the first rack 9 near one end edge. The bottom of the waist-shaped frame 7 extends vertically downward. The lever 12 is slidably engaged between the inner walls on both sides of the waist-shaped frame 7. The rear surface of the waist-shaped frame 7 is located in front of the front surface of the transition gear 4.

[0042] The effect achieved is that the swing arm 5 is driven to rotate by the motor 6, and the waist-shaped frame 7 is driven to swing back and forth during the rotation of the swing arm 5. Since the waist-shaped frame 7 is installed on the first rack 9, the first rack 9 can be driven to reciprocate to drive the transition gear 4 to rotate, and then drive the second rack 8 to reciprocate, wherein the reciprocating swing directions of the first rack 9 and the second rack 8 are opposite. When the second rack 8 reciprocates, it can drive the guide plate 19 to slide inside the guide port 15, thereby controlling the on and off of the feeding component. When the first rack 9 reciprocates, it can drive the compaction component to move, and at the same time control the on and off of the discharge component. The rear surface of the waist-shaped frame 7 is set on the front side of the front surface of the transition gear 4, which can prevent the waist-shaped frame 7 from sliding to the front side of the transition gear 4. Mechanical interference with the front surface of the transition gear 4 can be prevented. The feeding component, the compaction component and the discharge component can be driven to work synchronously through the driving component, providing a power source for the operation of the entire mechanism.

[0043] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the feeding assembly includes a buffer chamber 28, which is opened inside the compression molding box 1 near the rear edge, and a feed pipe 13 is fixed to the rear side of the compression molding box 1, and the feed pipe 13 is connected to the buffer chamber 28. A side flow channel 29 is opened inside the molding box 21 near the bottom edge, one end of the side flow channel 29 penetrates into the buffer chamber 28, and the other end of the side flow channel 29 penetrates into the guide port 15. A guide plate 19 is slidably connected between the inner walls on both sides of the guide port 15, and a bending hole 30 is opened inside the guide plate 19, one end of the bending hole 30 penetrates into the top of the guide plate 19, and the other end of the bending hole 30 penetrates into one side of the guide plate 19 and is relatively connected to the other end of the side flow channel 29. A side connecting rod 18 is fixed to the bottom of the guide plate 19 near one end edge, and one end of the side connecting rod 18 is fixed to the second slider 17. Two constraint plates 27 are fixed to the top of the guide plate 19, and the two constraint plates 27 are both slidably connected between the inner walls of the molding box 21.

[0044] The effect achieved is that, during the sliding process of the guide plate 19 inside the guide opening 15, when the restraining plate 27 completely slides into the inner wall of the molding box 21, at this time, one end of the bending hole 30 located on the guide plate 19 is connected with the side flow channel 29, and the molten plastic flows into the buffer cavity 28 through the feed pipe 13, flows into the bending hole 30 through the side flow channel 29 inside the buffer cavity 28, and finally flows into the molding box 21 from the bending hole 30. The molten plastic inside the molding box 21 and the woven fiber filling structural frame are mutually coated to form a composite plate material. During the filling process, the molten plastic is injected into the molding box 21, so the pressing plate 24 is lifted upward until the bottom of the pressing plate 24 is lifted above the top of the constraint plate 27, so that the subsequent compacting component can press the pressing plate 24. When used later, the processed composite plate material can be cut at convenient locations to obtain a composite plate blank. The composite plate blank can be further processed according to the required product shape to obtain the required product. The molten plastic can be injected into the molding box 21 from bottom to top through the feeding component. When the molten plastic is injected, the molten plastic spreads upward and covers the woven fiber filling structural frame, avoiding the generation of a large number of fine bubbles inside the plastic due to pouring the plastic from above.

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8 As shown, the compacting assembly includes a pressing plate 24, which is slidably arranged between the inner walls of the front and rear sides of the molding box 21 near the top edge, and the top of the molding box 21 is fixed with support plates 25 at the four corners, and the bottoms of multiple support plates 25 are installed with fixed sleeves 32, and the interiors of multiple fixed sleeves 32 are slidably connected with circular plates 34, and the top of the pressing plate 24 is fixed with guide rods 33 at the four corners, and multiple guide rods 33 are slidably penetrated into the interior of the fixed sleeve 32, and are correspondingly fixedly connected to the bottom of the circular plate 34, and the bottom of multiple circular plates 34 and the inner bottom surface of the fixed sleeve 32 are fixed with first springs 35, and the interior of the compression molding box 1 is provided with a support frame 22, and the support frame 25 is fixed with a first spring 35, and the interior of the compression molding box 1 is provided with a support frame 22, and the support frame 25 is fixed with a first spring 35, and the interior of the compression molding box 1 is provided with a first spring 35, and the support frame 25 is fixed with a first spring 35, and the support frame 25 is fixed with a first spring 35, and the bottom of the compression molding box 1 is provided ... A pre-pressing roller 23 is rotatably connected between the inner walls of the support frame 22, one end of the support frame 22 is fixed on the outer surface of one side of the first slider 16, a compacting roller 20 is rotatably connected between the inner walls of both sides of the compression molding box 1, the compacting roller 20 is located on one side of the pre-pressing roller 23, a driving cavity 40 is opened inside the compression molding box 1 near the front edge, a friction wheel 41 is rotatably connected between the inner walls of both sides of the driving cavity 40, one end of the compacting roller 20 slides through the interior of the driving cavity 40, and is fixed to one end of the friction wheel 41, a friction strip 42 is fixed to one end of the first slider 16, one end of the friction strip 42 slides through the interior of the driving cavity 40, and is frictionally fitted with the friction wheel 41.

[0046] The effect achieved is that the preformed plastic inside the molding box 21 can be pressed by the compacting component, so that the inside of the molded plastic is more compact. When the feeding component pushes the preformed panel to the outside, the pre-pressing roller 23 presses the pressing plate 24, so that the preformed panel is compacted as a whole, making the inside of the panel more compact after molding. When the pre-pressing roller 23 rotates, the sliding of the first slider 16 drives the support frame 22 to slide, so that the pre-pressing roller 23 on the support frame 22 can press the pressing plate 24, so that the molten plastic filled in the molding box 21 is compacted. At the same time, the sliding of the first slider 16 will drive the friction strip 42 to reciprocate, and the friction strip 42 is frictionally connected to the friction wheel 41, so it can drive the friction wheel 41 to rotate, and then drive the compacting roller 20 to rotate, compact the top of the molded panel, and at the same time convey the panel to the side of the support plate 14.

[0047] like Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig. 9 and Fig.10 As shown, the discharge assembly includes a U-shaped slide plate 38, a shifting cavity 31 is provided at the inner bottom surface of the first slide 11 near one side edge, a reciprocating cavity 43 is provided at the inner bottom surface of the shifting cavity 31 near one side edge, a U-shaped groove 37 is provided at the inner bottom surface of the reciprocating cavity 43, the inner bottom surface of the U-shaped groove 37 is recessed downward near both side edges, the U-shaped slide plate 38 is slidably connected between the inner walls of the U-shaped groove 37, and both ends of the bottom of the U-shaped slide plate 38 extend to the recessed parts of the inner bottom surface of the U-shaped groove 37, a discharge channel 36 is provided at the side wall of the compression box 1 near the front side edge, one end of the discharge channel 36 passes through the interior of the transmission cavity 2, and the discharge The other end of the material flow channel 36 passes through the interior of the compression molding box 1 and is interconnected with the side opening 26. The discharge flow channel 36 is interconnected with the U-shaped groove 37. The middle of the bottom of the U-shaped slide plate 38 is located above the interior of the discharge flow channel 36. A trapezoidal block 44 is fixed to the top of the U-shaped slide plate 38. The trapezoidal block 44 is located inside the reciprocating cavity 43. The bottom of the trapezoidal block 44 is located at four corners and second springs 45 are fixed thereto. The bottoms of the multiple second springs 45 are fixed to the inner bottom surface of the reciprocating cavity 43. A paddle plate 39 is fixed to the bottom of the first slider 16. The paddle plate 39 is located inside the paddle cavity 31, and the bottom of the paddle plate 39 extends to one side of the trapezoidal block 44.

[0048] The effect achieved is that, by setting the discharge assembly, the plastic produced after the compaction assembly presses the preformed plastic inside the molding box 21 can be discharged. When the compaction assembly is not working, the paddle 39 is located above the trapezoidal block 44, thereby pressing the trapezoidal block 44 downward. At this time, the second spring 45 is in a compressed state, and the middle of the bottom of the U-shaped slide 38 fits with the inner bottom surface of the discharge flow channel 36. The discharge flow channel 36 is cut off by the U-shaped slide 38, and the preformed plastic on the support frame 22 is driven by the first slide 16. When the pressure roller 23 presses the pressure plate 24, it will drive the paddle plate 39 to slide toward the side of the paddle chamber 31, so that the contact paddle plate 39 presses the trapezoidal block 44. At this time, under the elastic force of the second spring 45, the U-shaped slide plate 38 will be lifted to the top of the U-shaped groove 37, so that the discharge channel 36 is conductive. At this time, under the pressure of the pressure plate 24, the excess material inside the forming box 21 will be pressed into the discharge channel 36 for discharge, preventing the formation of a closed volume cavity inside the forming box 21, resulting in the inability to compact the pre-formed plate inside.

[0049] The main problem solved by this embodiment is: by setting up a feeding component, molten plastic can be injected into the molding box 21, so that the fiber-filled structural frame and the molten plastic can be combined with each other to form a plate. At this time, the fiber-filled structural frame will be covered by the molten plastic. When the subsequent plate solidifies, the fiber-filled structural frame is located inside the plate, which improves the strength of the plate. In the process of pushing the preformed plate to the outside, by setting up a compacting component, the preformed plate can be compacted when discharging, which improves the tightness of the connection between the fiber-filled structural frame and the molten plastic. When the preformed plate is compacted, the preformed plate located inside the molding box 21 will generate an extrusion force, and under the action of the extrusion force, part of the plastic will enter the side opening 26 for subsequent discharge through the discharge component. The excess material pressed out by the compacting component can be discharged through the discharge component, which is convenient for compacting the material, eliminating the bubble content inside the material after molding, and preventing the formation of a closed volume inside the molding box 21, which causes the compacting component to be unable to press the preformed material inside the molding box 21. The driving component can provide power for the operation of the entire device. When the driving component works, it drives the feeding component, the compacting component and the discharge component to work synchronously. Under the combined movement of the above mechanisms, the current technical problem of pre-setting a fiber filling structure inside the mold in the process of injection molding of automobile plastic composite panels is solved. The fiber filling structure will expand when heated, causing the molten plastic inside the mold to overflow, and the molten plastic is not compact after solidification, which affects the strength of the panel after molding.

[0050] For example, in one embodiment, the present invention further provides a method for preparing an automotive plastic composite sheet, which is applied to the above automotive plastic composite sheet laminating device, comprising the following steps:

[0051] Step S1: Put the woven fiber-filled structural frame into the molding box 21, and then drive the entire device to work through the driving component. When working, the molten plastic is injected into the molding box 21 through the feeding component, so that the fiber-filled structural frame and the molten plastic can be combined with each other, and when discharging, the compacting component is used to compact it to ensure that the inside of the molded plate is compacted, and the excess material pressed out by the compacting component is discharged during the discharging process through the discharging component;

[0052] Step S2: When the driving assembly is working, the motor 6 drives the swing rod 5 to rotate, and during the rotation of the swing rod 5, the waist-shaped frame 7 is driven to swing back and forth, thereby driving the first rack 9 to reciprocate and drive the transition gear 4 to rotate, and then drive the second rack 8 to reciprocate, wherein the reciprocating swing directions of the first rack 9 and the second rack 8 are opposite;

[0053] Step S3: When the feeding assembly is working, the molten plastic flows into the buffer cavity 28 through the feeding pipe 13, flows into the bending hole 30 through the side flow channel 29 inside the buffer cavity 28, and finally flows into the interior of the molding box 21 from the bending hole 30;

[0054] Step S4: When the compacting component is working, when the feeding component pushes the preformed plate outward, the pre-pressing roller 23 presses the pressing plate 24, thereby compacting the preformed plate as a whole, so that the interior of the plate is more compact after being formed;

[0055] Step S5: When the discharge component is working, when the compacting component compacts the preformed panels, the excess material will be pressed into the discharge channel 36 for discharge, to prevent the formation of a closed volume cavity inside the forming box 21, resulting in failure to compact the preformed panels inside.

[0056] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automotive plastic composite sheet pressing device, characterized in that: The compression molding box (1) comprises a compression molding box (1), the top and one side of the compression molding box (1) are both open, a protective cover plate (10) is arranged at the top of the compression molding box (1) near one side edge, a transmission cavity (2) is arranged at the front side of the compression molding box (1), a driving component is arranged inside the transmission cavity (2), a molding box (21) is fixed between the inner walls of both sides of the compression molding box (1), a feeding component is arranged inside the molding box (21), a compacting component is arranged on the top of the molding box (21), and a discharge component is arranged between the transmission cavity (2) and the molding box (21); A support plate (14) is fixed between the inner walls of the compression molding box (1) on one side close to the molding box (21); the support plate (14) and one side of the molding box (21) are connected to each other; one side of the molding box (21) is open; an opening (47) is provided on the other side of the molding box (21) near the bottom edge; guide openings (15) are provided on the inner bottom surface of the molding box (21) and the inner bottom surface of the support plate (14); the two guide openings (15) are connected to each other; the guide opening (15) on the molding box (21) is connected to the inside of the opening (47); and a side opening (26) is provided on the inner wall of one side of the molding box (21) near the corner; The compacting assembly comprises a pressing plate (24), the pressing plate (24) being slidably arranged between the inner walls of the front and rear sides of the molding box (21) near the top edge, the top of the molding box (21) being fixed with support plates (25) at four corners, the bottoms of the plurality of support plates (25) being installed with fixing sleeves (32), the interiors of the plurality of fixing sleeves (32) being slidably connected with circular plates (34), the tops of the pressing plate (24) being fixed with guide rods (33) at four corners, the plurality of guide rods (33) being slidably penetrated into the interior of the fixing sleeve (32) and being fixedly connected to the bottoms of the circular plates (34), the bottoms of the plurality of circular plates (34) and the inner bottom surfaces of the fixing sleeves (32) being fixedly connected with the bottoms of the circular plates (34), the first springs (35) being fixedly arranged between the bottoms of the plurality of circular plates (34) and the inner bottom surfaces of the fixing sleeves (32), the interior of the compression molding box (1) being provided with a support frame (22), the support frame (25) being installed with fixing sleeves (32) at the bottoms of the plurality of fixing sleeves (32), the interiors of the plurality of fixing sleeves (32) being slidably connected with circular plates (34), A pre-pressing roller (23) is rotatably connected between the inner walls of the support frame (22), one end of the support frame (22) is fixed to an outer surface of one side of the first slider (16), a compacting roller (20) is rotatably connected between the inner walls of both sides of the compression box (1), the compacting roller (20) is located on one side of the pre-pressing roller (23), a driving cavity (40) is provided inside the compression box (1) near the front edge, a friction wheel (41) is rotatably connected between the inner walls of both sides of the driving cavity (40), one end of the compacting roller (20) slides through the inside of the driving cavity (40) and is fixed to one end of the friction wheel (41), a friction strip (42) is fixed to one end of the first slider (16), one end of the friction strip (42) slides through the inside of the driving cavity (40) and is frictionally fitted with the friction wheel (41).

2. The automotive plastic composite sheet pressing device according to claim 1, characterized in that: The driving assembly comprises a motor (6), a vertical plate (3) is fixed to the inner bottom surface of the transmission cavity (2), the motor (6) is mounted on the top of the vertical plate (3), a swing rod (5) is fixed to the output end of the motor (6), a shifting rod (12) is fixed to one end of the swing rod (5), a first sliding opening (11) is provided on the rear inner wall of the transmission cavity (2) near the top edge, and a second sliding opening (46) is provided on the rear inner wall of the transmission cavity (2) near the bottom edge, and both the first sliding opening (11) and the second sliding opening (46) penetrate into the interior of the compression molding box (1).

3. The automotive plastic composite sheet laminating device according to claim 2, characterized in that: The first sliding opening (11) is slidably connected to a first slider (16) inside, and the second sliding opening (46) is slidably connected to a second slider (17) inside. A first rack (9) is fixed to the front side of the first slider (16), and a second rack (8) is fixed to the front side of the second slider (17). Both the first rack (9) and the second rack (8) are located inside the transmission cavity (2). A transition gear (4) is rotatably connected to the rear inner wall of the transmission cavity (2). The first rack (9) is meshed with the top of the transition gear (4), and the second rack (8) is meshed with the bottom of the transition gear (4).

4. The automotive plastic composite sheet pressing device according to claim 3, characterized in that: A waist-shaped frame (7) is fixed to the front side of the first rack (9) near one end edge, the bottom of the waist-shaped frame (7) extends vertically downward, the shifting rod (12) is slidably engaged between the inner walls on both sides of the waist-shaped frame (7), and the rear surface of the waist-shaped frame (7) is located in front of the front surface of the transition gear (4).

5. The automotive plastic composite sheet pressing device according to claim 4, characterized in that: The feeding assembly comprises a buffer chamber (28), wherein the buffer chamber (28) is provided inside the compression molding box (1) near the rear edge, a feed pipe (13) is fixed on the rear side of the compression molding box (1), the feed pipe (13) and the buffer chamber (28) are communicated with each other, a side flow channel (29) is provided inside the molding box (21) near the bottom edge, one end of the side flow channel (29) penetrates into the buffer chamber (28), and the other end of the side flow channel (29) penetrates into the guide port (15), and a guide plate (19) is slidably connected between the inner walls on both sides of the guide port (15). A bending hole (30) is provided inside the guide plate (19), one end of the bending hole (30) penetrates to the top of the guide plate (19), the other end of the bending hole (30) penetrates to one side of the guide plate (19) and is relatively connected to the other end of the side flow channel (29), a side connecting rod (18) is fixed to the bottom of the guide plate (19) near one end edge, one end of the side connecting rod (18) is fixed to the second slider (17), and two restraining plates (27) are fixed to the top of the guide plate (19), and the two restraining plates (27) are slidably connected between the inner walls of the molding box (21).

6. The automotive plastic composite sheet laminating device according to claim 5, characterized in that: The discharge assembly comprises a U-shaped slide plate (38), a shifting cavity (31) is provided on the inner bottom surface of the first sliding opening (11) near one side edge, a reciprocating cavity (43) is provided on the inner bottom surface of the shifting cavity (31) near one side edge, a U-shaped groove (37) is provided on the inner bottom surface of the reciprocating cavity (43), the inner bottom surface of the U-shaped groove (37) is concave downward near both side edges, the U-shaped slide plate (38) is slidably connected between the inner walls of the U-shaped groove (37), and both ends of the bottom of the U-shaped slide plate (38) extend to the concave parts of the inner bottom surface of the U-shaped groove (37) correspondingly.

7. The automotive plastic composite sheet pressing device according to claim 6, characterized in that: A discharge channel (36) is provided on the side wall of the compression molding box (1) near the front edge, one end of the discharge channel (36) penetrates into the interior of the transmission chamber (2), the other end of the discharge channel (36) penetrates into the interior of the compression molding box (1) and is communicated with the side opening (26), the discharge channel (36) is communicated with the U-shaped groove (37), the bottom middle of the U-shaped slide plate (38) is located above the interior of the discharge channel (36), and the top of the U-shaped slide plate (38) is located above the top of the U-shaped slide plate (38). A trapezoidal block (44) is fixed thereto, the trapezoidal block (44) being located inside the reciprocating cavity (43), second springs (45) being fixed to the bottom of the trapezoidal block (44) at four corners, the bottoms of a plurality of the second springs (45) being fixed to the inner bottom surface of the reciprocating cavity (43), a shifting plate (39) being fixed to the bottom of the first sliding block (16), the shifting plate (39) being located inside the shifting cavity (31), and the bottom of the shifting plate (39) extending to one side of the trapezoidal block (44).

8. A method for preparing an automobile plastic composite board, which is applied to an automobile plastic composite board pressing device as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step S1: placing the woven fiber-filled structural frame into the interior of the molding box (21), and then driving the entire device to work through the driving component. During operation, the molten plastic is injected into the interior of the molding box (21) through the feeding component, so that the fiber-filled structural frame and the molten plastic can be combined with each other, and when discharging the material, the compacting component is used to compact it to ensure that the interior of the molded panel is compacted. During the discharging process, the excess material pressed out by the compacting component is discharged through the discharging component; Step S2: When the driving assembly is working, the motor (6) drives the swing rod (5) to rotate, and during the rotation of the swing rod (5), the waist-shaped frame (7) is driven to swing back and forth, thereby driving the first rack (9) to reciprocate and drive the transition gear (4) to rotate, and then drive the second rack (8) to reciprocate, wherein the reciprocating swing directions of the first rack (9) and the second rack (8) are opposite; Step S3: when the feeding assembly is in operation, the molten plastic flows into the buffer chamber (28) through the feeding pipe (13), flows into the bending hole (30) through the side flow channel (29) inside the buffer chamber (28), and finally flows into the interior of the molding box (21) from the bending hole (30); Step S4: when the compacting component is working, when the feeding component pushes the preformed plate outward, the pre-pressing roller (23) presses the pressing plate (24), thereby compacting the preformed plate as a whole, so that the interior of the plate is more compact after being formed; Step S5: When the discharge component is working, when the compacting component is compacting the preformed plate, the excess material will be pressed into the discharge channel (36) for discharge, so as to prevent the formation of a closed volume cavity inside the forming box (21), resulting in the inability to compact the preformed plate inside.

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