One-time prepreg forming device

Abstract

The present invention relates to the technical field of prepreg molding, and in particular to a one-time molding device for prepreg, comprising a frame, an upper mold and a lower mold are arranged on the inner side of the frame, the upper mold is fixedly connected to the top of the frame, a pair of support plates are arranged below the lower mold, wherein the support plate is connected to a lifting mechanism, and the lower mold is connected to a fixing mechanism, and when the lower mold is fitted with the upper mold, the fixing mechanism is used to fix the lower mold, and symmetrically distributed adsorption holes are arranged inside the upper mold, and an adsorption mechanism is arranged inside the adsorption holes, and the adsorption mechanism is used to adsorb the molded prepreg; according to the present invention, after the prepreg is molded, the prepreg will be adsorbed on the bottom of the lower mold, so that the staff can remove the molded prepreg from the bottom of the upper mold conveniently, and the prepreg will not be squeezed inside the die groove at the top of the lower mold, which can effectively avoid the local deformation of the prepreg caused by the staff taking the prepreg out of the die groove.

Description

Technical Field

[0001] The invention relates to the technical field of prepreg molding, in particular to a one-time molding device for prepreg. Background Art

[0002] Prepreg is a combination of resin matrix and reinforcement made by impregnating continuous fibers or fabrics with a resin matrix under strictly controlled conditions. It is an intermediate material for manufacturing composite materials and can be directly used to manufacture various composite components. Therefore, its quality is directly related to the quality of the composite material.

[0003] In the prior art, most of the prepregs are hot-pressed and molded by the cooperation of an upper mold and a lower mold. When the prepreg is molded, the prepreg is placed inside the mold groove at the top of the lower mold, and the prepreg is extruded into a specific shape by the upper mold, thereby realizing one-time molding of the prepreg. However, this molding method will extrude the molded prepreg inside the mold groove at the top of the lower mold, which is inconvenient for the staff to take the molded prepreg out of the mold groove. If the staff forcibly takes the molded prepreg out of the mold groove, it is easy to cause local deformation of the molded prepreg, thereby reducing the molding effect of the prepreg. Summary of the invention

[0004] The object of the present invention is to provide a prepreg one-shot molding device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A one-time forming device for prepreg comprises a frame, an upper mould and a lower mould are arranged inside the frame, the upper mould is fixedly connected to the top of the frame, a pair of support plates are arranged below the lower mould, wherein the support plates are connected to a lifting mechanism, the lifting mechanism is used to drive the support plates to move up and down, the lower mould is connected to a fixing mechanism, when the lower mould is fitted with the upper mould, the fixing mechanism is used to fix the lower mould, symmetrically distributed adsorption holes are arranged inside the upper mould, the adsorption holes pass through the bottom of the upper mould, an adsorption mechanism is arranged inside the adsorption holes, and the adsorption mechanism is used to adsorb the prepreg after forming.

[0007] Preferably, the lifting mechanism comprises telescopic rods which are fixedly connected to the bottom of the frame and are symmetrically distributed, and the upper ends of the telescopic rods are fixedly connected to the bottom of the support plate.

[0008] Preferably: the fixing mechanism includes a guide rod fixedly connected to the bottom of the lower mold and symmetrically distributed, the guide rod passes through the support plate and is slidably connected to the support plate, the bottom of the frame is fixed with a symmetrically distributed guide column, the lower end of the guide rod extends into the guide column and is slidably connected to the guide column, the side walls of the guide rod are provided with a fixing groove, the inner wall of the guide column is provided with a groove body, the groove body is slidably connected with a fixing block adapted to the fixing groove, one end of the fixing block is connected to the inner wall of the groove body by a first elastic component, and the other end of the fixing block is in contact with the side wall of the guide rod, wherein the fixed block is connected with a traction component, and the traction component is used to pull the fixed block into the groove body.

[0009] Preferably: the traction component includes a slide groove arranged on the side wall of the guide column, a slider is slidably connected inside the slide groove, the end of the slider extends to the outside of the slide groove, a wire groove is provided on the top of the slide groove, the wire groove extends to the inside of the groove body, a traction rope is fixed on the top of the slider, the traction rope passes through the inside of the wire groove and is fixedly connected to the fixed block, and push blocks are fixed at the bottom of the support plate which are symmetrically distributed and squeeze the slider.

[0010] Preferably: a slide bar runs through the interior of the support plate, the slide bar is slidably connected to the support plate, a buffer plate is fixed to the upper end of the slide bar, and the buffer plate is connected to the support plate via a second elastic component.

[0011] Preferably: the adsorption mechanism includes an air cylinder fixedly connected to the side wall of the frame, a piston sliding inside the air cylinder, a support rod fixedly connected to the piston, the support rod passes through the end face of the air cylinder and is slidably connected to the end face of the air cylinder, a baffle is fixed at one end of the support rod passing through the end face of the air cylinder, the baffle is connected to the end face of the air cylinder through a third elastic component, wherein an extrusion block for extruding the baffle is fixed on the side wall of the support plate, the air cylinder is connected to an air pipe, the other end of the air pipe extends into the interior of the upper mold and communicates with the adsorption hole.

[0012] Preferably: a push rod is slidably connected to the inside of the adsorption hole, the bottom of the push rod is adapted to the shape of the bottom of the upper mold, the upper end of the push rod extends into the interior of the upper mold and is rotatably connected to a connecting rod, the connecting rod is rotatably connected to a push rod, the push rod passes through the side wall of the upper mold and is slidably connected to the side wall of the upper mold, and a push plate is fixed to one end of the push rod located outside the upper mold, and the push plate is connected to the side wall of the upper mold through a fourth elastic component.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention utilizes the cooperation of the upper mold and the lower mold to extrude the prepreg into a specific shape, thereby realizing one-time molding of the prepreg, and the bottom of the upper mold is provided with symmetrically distributed adsorption holes. When the prepreg is molded, the prepreg will be adsorbed on the bottom of the lower mold, which is convenient for the staff to remove the molded prepreg from the bottom of the upper mold. The prepreg will not be squeezed inside the mold groove at the top of the lower mold, which can effectively avoid the local deformation of the prepreg caused by the staff taking the prepreg out from the mold groove, thereby ensuring the molding accuracy of the prepreg. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the present invention.

[0015] Figure 2 Schematic diagram of the connection structure between the upper mold and the lower mold in an embodiment of the present invention.

[0016] Figure 3 It is a cross-sectional view of the internal structure of the guide column in an embodiment of the present invention.

[0017] Figure 4 Schematic diagram of the internal structure of the air pressure cylinder in an embodiment of the present invention.

[0018] Figure 5 It is a cross-sectional view of the internal structure of the upper mold in an embodiment of the present invention.

[0019] In the figure: 1-frame; 2-upper mold; 3-lower mold; 4-support plate; 5-lifting mechanism; 51-telescopic rod; 6-fixing mechanism; 61-guide rod; 62-guide column; 63-fixing groove; 64-fixing block; 65-first elastic component; 66-traction rope; 67-slider; 68-slide groove; 69-push block; 610-buffer plate; 611-second elastic component; 612-slide rod; 7-adsorption mechanism; 71-air cylinder; 72-piston; 73-trachea; 74-support rod; 75-third elastic component; 76-baffle; 77-push plate; 78-fourth elastic component; 79-push rod; 710-connecting rod; 711-resist rod; 713-extrusion block; 8-adsorption hole. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0022] In one embodiment, see Figure 1 and Figure 2 A one-time molding device for prepreg comprises a frame 1, an upper mold 2 and a lower mold 3 are arranged inside the frame 1, the upper mold 2 is fixedly connected to the top of the frame 1, a support plate 4 is arranged below the lower mold 3, wherein the support plate 4 is connected to a lifting mechanism 5, the lifting mechanism 5 is used to drive the support plate 4 to move up and down, the lower mold 3 is connected to a fixing mechanism 6, when the lower mold 3 is fitted with the upper mold 2, the fixing mechanism 6 is used to fix the lower mold 3, symmetrically distributed adsorption holes 8 are arranged inside the upper mold 2, the adsorption holes 8 run through the bottom of the upper mold 2, an adsorption mechanism 7 is arranged inside the adsorption holes 8, and the adsorption mechanism 7 is used to adsorb the prepreg after molding.

[0023] The lifting mechanism 5 drives the support plate 4 to move downward, and the lifting mechanism 5 drives the support plate 4 to move upward. The mold 3 fits tightly with the upper mold 2, and the lower mold 3 does not move downward with the downward movement of the support plate 4, which increases the extrusion time of the prepreg and thus ensures the molding effect of the prepreg. When the support plate 4 moves downward to a certain extent, the adsorption mechanism 7 inside the adsorption hole 8 will automatically adsorb the molded prepreg, thereby adsorbing the prepreg to the bottom of the upper mold 2. When the support plate 4 drops to the lowest point, the fixing mechanism 6 automatically releases the fixation of the lower mold 3, and the lower mold 3 automatically falls on the surface of the support plate 4 under the action of gravity, and the prepreg is adsorbed on the surface of the lower mold 3 by the adsorption mechanism 7, which is convenient for the staff to remove the molded prepreg from the bottom of the upper mold 2. The prepreg will not be squeezed inside the die groove at the top of the lower mold 3, which can effectively avoid the deformation of the prepreg caused by the staff taking the prepreg out of the die groove, and further ensure the molding accuracy of the prepreg.

[0024] See also Figure 2 and Figure 3The fixing mechanism 6 includes a guide rod 61 fixedly connected to the bottom of the lower mold 3 and symmetrically distributed, the guide rod 61 penetrates the support plate 4 and is slidably connected to the support plate 4, and a symmetrically distributed guide column 62 is fixed to the bottom of the frame 1, and the lower end of the guide rod 61 extends into the guide column 62 and is slidably connected to the guide column 62, and the side wall of the guide rod 61 is provided with a fixing groove 63, and the inner wall of the guide column 62 is provided with a groove body, and a fixing block 64 adapted to the fixing groove 63 is slidably connected inside the groove body, one end of the fixing block 64 is connected to the inner wall of the groove body through a first elastic component 65, and the other end of the fixing block 64 is connected to the side wall of the guide rod 61, wherein the fixing block 64 is connected to a traction component, and the traction component is used to pull the fixing block 64 into the groove body;

[0025] When the lower mold 3 moves upward, it also drives the two guide rods 61 to move upward. When the lower mold 3 is fitted with the upper mold 2, the fixed groove 63 on the side wall of the guide rod 61 is aligned with the groove body on the inner wall of the guide column 62. At this time, the fixed block 64 automatically enters the fixed groove 63 under the action of the first elastic component 65. The first elastic component 65 can be a spring. The cooperation between the fixed block 64 and the fixed groove 63 can play a supporting role on the guide rod 61, thereby limiting the downward movement of the guide rod 61, and then limiting the downward movement of the lower mold 3, so that the lower mold 3 will not move downward with the downward movement of the support plate 4. When the adsorption mechanism 7 completes the adsorption of the molded prepreg, the support plate 4 pulls the fixed block 64 to the inside of the groove body through the traction component. Without the support of the fixed block 64, the lower mold 3 automatically moves downward under the action of gravity, thereby separating the lower mold 3 from the upper mold 2.

[0026] See also Figure 2 and Figure 3 The traction component includes a slide groove 68 arranged on the side wall of the guide column 62, a slider 67 is slidably connected inside the slide groove 68, and the end of the slider 67 extends to the outside of the slide groove 68. A wire groove is provided on the top of the slide groove 68, and the wire groove extends to the inside of the groove body. A traction rope 66 is fixed on the top of the slider 67, and the traction rope 66 passes through the inside of the wire groove and is fixedly connected to the fixed block 64. The bottom of the support plate 4 is fixed with a push block 69 that is symmetrically distributed and squeezes the slider 67;

[0027] When the adsorption mechanism 7 finishes adsorbing the formed prepreg, the support plate 4 moves downward and squeezes the slider 67 through the push block 69, so that the slider 67 moves downward in the slide groove 68. While the slider 67 moves downward, it pulls the fixed block 64 through the traction rope 66, so that the fixed block 64 is pulled into the groove body. Without the support of the fixed block 64, the lower mold 3 automatically moves downward under the action of gravity, so that the lower mold 3 is separated from the upper mold 2.

[0028] See also Figure 2A slide bar 612 is passed through the support plate 4, and the slide bar 612 is slidably connected to the support plate 4. A buffer plate 610 is fixed to the upper end of the slide bar 612, and the buffer plate 610 is connected to the support plate 4 through a second elastic component 611;

[0029] When the fixing block 64 is pulled into the groove body, the support of the fixing block 64 is lost, and the lower mold 3 automatically moves downward under the action of gravity. At this time, the lower mold 3 will hit the buffer plate 610. The buffer plate 610 and the second elastic component 611 are used to buffer the lower mold 3, which can effectively reduce the impact of the lower mold 3 on the support plate 4 and protect the support plate 4. The second elastic component 611 can be a spring, and the support plate 4 can limit the buffer plate 610 through the sliding rod 612, which effectively improves the stability of the buffer plate 610.

[0030] See also Figure 2 , Figure 4 and Figure 5 The adsorption mechanism 7 includes an air cylinder 71 fixedly connected to the side wall of the frame 1, a piston 72 sliding inside the air cylinder 71, a support rod 74 fixedly connected to the piston 72, the support rod 74 passes through the end face of the air cylinder 71 and is slidably connected to the end face of the air cylinder 71, a baffle 76 is fixed to one end of the support rod 74 passing through the end face of the air cylinder 71, the baffle 76 is connected to the end face of the air cylinder 71 through a third elastic component 75, wherein an extrusion block 713 for extruding the baffle 76 is fixed on the side wall of the support plate 4, the air cylinder 71 is connected to an air pipe 73, the other end of the air pipe 73 extends into the interior of the upper mold 2 and communicates with the adsorption hole 8;

[0031] When the prepreg is formed, the lifting mechanism 5 drives the support plate 4 to move downward, and the support plate 4 drives the side extrusion block 713 to move downward. While the extrusion block 713 moves downward, it squeezes the baffle 76 through the inclined surface at its bottom, so that the baffle 76 drives the piston 72 to move inside the air cylinder 71 through the support rod 74. While the piston 72 moves, it absorbs the gas inside the adsorption hole 8 through the air pipe 73, and a negative pressure is formed inside the adsorption hole 8, so that the formed prepreg is adsorbed on the bottom of the lower mold 3, which is convenient for the staff to take out the formed prepreg from between the upper mold 2 and the lower mold 3. The third elastic component 75 can be a spring, which can play a resetting role on the baffle 76 and the piston 72.

[0032] In another embodiment, see Figure 5The adsorption hole 8 is slidably connected with a push rod 711, the bottom of the push rod 711 is adapted to the shape of the bottom of the upper mold 2, the upper end of the push rod 711 extends into the upper mold 2 and is rotatably connected with a connecting rod 710, the connecting rod 710 is rotatably connected with a push rod 79, the push rod 79 penetrates the side wall of the upper mold 2 and is slidably connected to the side wall of the upper mold 2, the push rod 79 is located outside the upper mold 2 and is fixed with a push plate 77 at one end, and the push plate 77 is connected to the side wall of the upper mold 2 through a fourth elastic component 78;

[0033] When the support plate 4 moves upward, the extrusion block 713 is also driven to move upward. When the extrusion block 713 moves upward to a certain extent, the extrusion block 713 no longer squeezes the baffle plate 76, and the baffle plate 76 automatically resets. At the same time, the extrusion block 713 squeezes the push plate 77 through the inclined surface at its top, and the push plate 77 drives the push rod 79 to move. The push rod 79 drives the push rod 711 to move inside the suction hole 8 through the connecting rod 710. When the plane of the extrusion block 713 contacts the side wall of the push plate 77, the degree of extrusion of the push plate 77 by the extrusion block 713 no longer changes. At this time, the bottom of the push rod 711 just forms a complete bottom with the bottom of the lower mold 3, and the push rod 711 can seal the suction hole 8. The blocking effect effectively avoids the influence of the adsorption hole 8 on the molding of the prepreg, and improves the molding accuracy of the prepreg. After the prepreg is molded, the support plate 4 drives the extrusion block 713 to move downward, and the extrusion block 713 no longer squeezes the push plate 77. The push plate 77 automatically resets under the action of the fourth elastic component 78. The fourth elastic component 78 can be a spring, and at the same time drives the push rod 711 to automatically reset. When the lower end of the push rod 711 moves to the upper part of the connection position between the air pipe 73 and the adsorption hole 8, the extrusion block 713 squeezes the baffle 76 through the inclined surface at its bottom, so that the baffle 76 drives the piston 72 to move inside the air pressure cylinder 71 through the support rod 74, thereby adsorbing the molded prepreg on the bottom of the lower mold 3.

[0034] Working principle: When the device is forming the prepreg, the prepreg is placed inside the mold groove at the top of the lower mold 3, and the support plate 4 is driven to move upward by the telescopic rod 51. The support plate 4 moves upward while driving the lower mold 3, the extrusion block 713, and the guide rod 61 to move upward. When the extrusion block 713 moves upward to a certain extent, the extrusion block 713 squeezes the push plate 77 through the inclined surface at its top, and the push plate 77 drives the push rod 79 to move. The push rod 79 drives the push rod 711 to move inside the adsorption hole 8 through the connecting rod 710. When the plane of the extrusion block 713 contacts the side wall of the push plate 77, the extrusion block 713 contacts the side wall of the push plate 77. The squeezing degree of the push plate 77 no longer changes. At this time, the bottom of the push rod 711 just forms a complete bottom with the bottom of the lower mold 3. The push rod 711 can play a blocking role on the adsorption hole 8. When the lower mold 3 is tightly fitted with the upper mold 2, the fixing groove 63 on the side wall of the guide rod 61 is just aligned with the groove body on the inner wall of the guide column 62, and the fixing block 64 automatically enters the fixing groove 63. The cooperation of the fixing block 64 and the fixing groove 63 can play a supporting role on the guide rod 61, thereby limiting the downward movement of the guide rod 61, and then limiting the downward movement of the lower mold 3. The prepreg is extruded into a specific shape, thereby realizing one-time molding of the prepreg, and the lower mold 3 does not move downward with the downward movement of the support plate 4. After the prepreg is molded, the support plate 4 drives the extrusion block 713 to move downward. The extrusion block 713 does not squeeze the push plate 77 first, so that the push rod 711 is automatically reset. When the lower end of the push rod 711 moves to the upper part of the connection position between the air pipe 73 and the adsorption hole 8, the extrusion block 713 squeezes the baffle 76 through the inclined surface at its bottom. The baffle 76 drives the piston 72 to move inside the air pressure cylinder 71 through the support rod 74. The piston 72 moves while passing The air in the adsorption hole 8 is sucked through the air pipe 73, and negative pressure is formed inside the adsorption hole 8, thereby adsorbing the molded prepreg on the bottom of the lower mold 3. As the support plate 4 continues to move downward, the support plate 4 squeezes the slider 67 through the push block 69, and the slider 67 moves downward in the slide groove 68 and pulls the fixed block 64 through the traction rope 66, thereby pulling the fixed block 64 into the groove body. Without the support of the fixed block 64, the lower mold 3 automatically moves downward under the action of gravity, thereby separating the lower mold 3 from the upper mold 2, making it convenient for the staff to take out the molded prepreg from between the upper mold 2 and the lower mold 3.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A one-time prepreg molding device, comprising a frame; characterized in that: An upper mold and a lower mold are provided inside the frame, the upper mold is fixedly connected to the top of the frame, a pair of support plates are provided below the lower mold, wherein the support plate is connected to a lifting mechanism, the lifting mechanism is used to drive the support plate to move up and down, the lower mold is connected to a fixing mechanism, when the lower mold is fitted with the upper mold, the fixing mechanism is used to fix the lower mold, symmetrically distributed adsorption holes are provided inside the upper mold, the adsorption holes run through the bottom of the upper mold, an adsorption mechanism is provided inside the adsorption holes, and the adsorption mechanism is used to adsorb the prepreg after molding; The fixing mechanism comprises a guide rod fixedly connected to the bottom of the lower mold and symmetrically distributed, the guide rod passes through the support plate and is slidably connected to the support plate, the bottom of the frame is fixed with a guide column symmetrically distributed, the lower end of the guide rod extends into the guide column and is slidably connected to the guide column, the side wall of the guide rod is provided with a fixing groove, the inner wall of the guide column is provided with a groove body, the groove body is slidably connected with a fixing block adapted to the fixing groove, one end of the fixing block is connected to the inner wall of the groove body through a first elastic component, and the other end of the fixing block is in contact with the side wall of the guide rod, wherein the fixing block is connected with a traction component, and the traction component is used to pull the fixing block into the groove body; The traction component includes a slide groove arranged on the side wall of the guide column, a slider is slidably connected inside the slide groove, the end of the slider extends to the outside of the slide groove, a wire groove is arranged on the top of the slide groove, the wire groove extends to the inside of the groove body, a traction rope is fixed on the top of the slider, the traction rope passes through the inside of the wire groove and is fixedly connected to the fixed block, and push blocks are fixed at the bottom of the support plate that are symmetrically distributed and squeeze the slider; The adsorption mechanism includes an air cylinder fixedly connected to the side wall of the frame, a piston sliding inside the air cylinder, a support rod fixedly connected to the piston, the support rod passes through the end face of the air cylinder and is slidably connected to the end face of the air cylinder, a baffle is fixed to one end of the support rod passing through the end face of the air cylinder, the baffle is connected to the end face of the air cylinder through a third elastic component, wherein an extrusion block for extruding the baffle is fixed on the side wall of the support plate, the air cylinder is connected to an air pipe, the other end of the air pipe extends into the interior of the upper mold and communicates with the adsorption hole; A push rod is slidably connected to the inside of the adsorption hole, and the bottom of the push rod is adapted to the shape of the bottom of the upper mold. The upper end of the push rod extends into the interior of the upper mold and is rotatably connected to a connecting rod. The connecting rod is rotatably connected to a push rod, which passes through the side wall of the upper mold and is slidably connected to the side wall of the upper mold. A push plate is fixed to one end of the push rod located outside the upper mold, and the push plate is connected to the side wall of the upper mold through a fourth elastic component.

2. A prepreg one-time molding device according to claim 1, characterized in that: The lifting mechanism comprises telescopic rods which are fixedly connected to the bottom of the frame and are symmetrically distributed, and the upper ends of the telescopic rods are fixedly connected to the bottom of the support plate.

3. A prepreg one-time molding device according to claim 1, characterized in that: A sliding rod is passed through the interior of the support plate, the sliding rod is slidably connected to the support plate, a buffer plate is fixed to the upper end of the sliding rod, and the buffer plate is connected to the support plate through a second elastic component.

Images