Carbon fiber automatic deviation correction hot press forming device

Abstract

The utility model discloses carbon fiber automatic deviation correction hot press forming device belongs to the hot press forming field. Including hot press station, this hot press station upper surface is provided with the down pressure station, four sets of deviation correction subassembly, its setting is in the hot press station, every group deviation correction subassembly contains the alignment part for four sides deviation correction of glass board installation in hot press station, is provided with the pressure holding part for the limitation of pre -preg on glass board on alignment part, be provided with the drive part for realizing deviation correction and pressure holding cooperation action on pressure holding part. Carbon fiber automatic deviation correction hot press forming device of the present application, through the alignment part of four sets of deviation correction subassembly can accurate correction glass board center deviation, avoid the unbalance of hot press stress, prevent the thickness uneven of board, resin overflow and solidification not completely, and the pressure holding part is matched with the drive part, avoids when rectifying, holds pre -preg before hot press, offsets the risk of sliding, ensures that pre -preg and glass board position stability, improves quality consistency from stress balance and position stability.

Description

Technical Field

[0001] This utility model relates to the field of hot pressing technology, and in particular to an automatic correction hot pressing device for carbon fiber. Background Technology

[0002] Carbon fiber composites are widely used in aerospace, new energy vehicles and other fields due to their high strength and lightweight properties. Among them, the hot pressing of carbon fiber sheets is a key production step. In the existing technology, carbon fiber sheets are usually prepared through the following process: prepreg (a composite semi-finished product of carbon fiber and resin) is laid on a glass plate, wrapped with a release film, and then placed on a hot press. Pressure and temperature are applied by a hot press and maintained for a certain period of time to allow the prepreg to cure and form.

[0003] However, existing hot pressing molding equipment has defects in actual production. The pressure distribution of the hot pressing table usually decreases from the center to the edge. If the prepreg and glass plate deviate from the center of the hot pressing table due to human positioning errors, it will directly lead to an imbalance of forces during hot pressing, with excessive pressure in the central area and insufficient pressure at the edges, or vice versa. This problem will result in inconsistent thickness of the formed carbon fiber sheet, excessive resin overflow at the edges, or even incomplete resin curing due to insufficient local pressure. At the same time, the prepreg is relatively soft and has a certain degree of flexibility at room temperature. When laid on the glass plate, it is positioned only by its own weight or slight friction. During placement, handling, or slight vibration of the hot pressing table, the prepreg is prone to relative sliding with the glass plate. Therefore, it is necessary to design an automatic correction hot pressing molding device for carbon fiber.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0005] This utility model provides an automatic carbon fiber correction hot pressing molding device to solve the problems of existing hot pressing molding devices where the prepreg and glass plate easily deviate from the center of the hot pressing table, resulting in force imbalance, and the prepreg and glass plate easily slide relative to each other, affecting product quality.

[0006] This utility model embodiment adopts the following technical solution: an automatic carbon fiber correction hot pressing forming device. It mainly includes a hot pressing table with a lower pressing table on its upper surface; four sets of correction components are disposed on the hot pressing table. Each set of correction components includes an alignment part mounted on the hot pressing table for correcting the four sides of a glass plate, a holding part for restricting the prepreg on the glass plate, and a driving part for coordinating the correction and holding actions.

[0007] Furthermore, the alignment part includes a fixed base mounted on the hot press table. A cylinder is horizontally mounted on the fixed base. The telescopic end of the cylinder passes through the fixed base and is fixedly connected to the push plate. Two sets of guide rods are symmetrically fixed on the side of the push plate near the cylinder. The guide rods movably pass through the fixed base and cooperate with linear bearings to form a double guide structure. An L-shaped correction block is mounted on the side of the push plate away from the fixed base. A notch is opened at the corresponding position on the surface of the lower press table.

[0008] Furthermore, a silicone anti-slip pad is attached to the contact surface of the correction block near the glass plate, and a pressure sensor is embedded in the silicone anti-slip pad.

[0009] Furthermore, the pressing part includes a base plate installed on the top of the fixed base, a mounting seat is installed on the base plate, the mounting seat is provided with two sets of inclined support plates arranged in an inclined state, a cylinder is movably assembled between the two sets of inclined support plates, the mounting seat has a protruding seat, a pressing rod is movably provided at one end of the protruding seat, a rotating rod is movably connected to the protruding seat, and the rotating rod is movably connected to the pressing rod through an auxiliary plate.

[0010] Furthermore, a pressure plate is movably provided through one end of the pressure rod, the pressure plate is equipped with a support shaft, the support shaft passes through one end of the pressure rod, and a spring is sleeved on the support shaft. The two ends of the spring are respectively connected to the upper surface of the pressure plate and the lower surface of the pressure rod.

[0011] Furthermore, the base plate has a through groove, and the drive unit includes a lead screw connected to the inner wall of the groove by a bearing. A movable sleeve is threaded onto the lead screw, and the movable sleeve is clearance-fitted with the inner wall of the groove to restrict the movable sleeve from moving linearly along the groove. The end of the lead screw near the groove is rotatably connected to the inner wall of the groove through a bearing.

[0012] Furthermore, the lead screw has a fixed bevel gear one, the bottom surface of the base plate is connected to the support rod through two sets of support sleeve bearings, the two ends of the support rod have stepped shafts, one end of the support rod is connected to a bevel gear two, the bevel gear two meshes with the bevel gear one, the other end of the support rod is connected to the gear part, and the guide rod is fixed with a support rack through a fixed sleeve, the support rack meshes with the gear part.

[0013] Furthermore, an elastic sealing gasket is attached to the contact area between the correction block and the notch groove of the lower pressure table. The sealing gasket is used to form a flexible buffer during correction.

[0014] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0015] The automatic carbon fiber alignment hot pressing forming device provides a basic load-bearing structure for carbon fiber hot pressing operations by setting up a hot pressing table and a lower pressing table on the upper surface. The alignment part of the four sets of alignment components can accurately correct the four sides of the glass plate, solving the problem of hot pressing table center deviation caused by manual positioning error, avoiding force imbalance during hot pressing, and preventing inconsistent thickness of carbon fiber sheet, excessive resin overflow at the edges, and incomplete local resin curing. The holding part, with the cooperation of the drive part, moves synchronously to avoid the alignment part during the alignment process. It holds the prepreg before hot pressing, and uses the pressure between the prepreg and the glass plate to offset the risk of slippage caused by placement, handling, or vibration of the hot pressing table, ensuring the relative position stability of the prepreg and the glass plate, and ensuring the quality of subsequent cutting and hot pressing. From the aspects of hot pressing force balance and relative position stability of prepreg and glass plate, it improves the yield and quality consistency of carbon fiber sheet hot pressing forming. Attached Figure Description

[0016] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0017] In the attached diagram:

[0018] Figure 1 This is an overall schematic diagram of the automatic carbon fiber correction hot pressing forming device in this application;

[0019] Figure 2 for Figure 1 A partial structural diagram;

[0020] Figure 3 for Figure 2 Enlarged view of point A;

[0021] Figure 4 for Figure 3 Enlarged view of point B;

[0022] Figure label:

[0023] 1. Hot pressing assembly; 11. Hot pressing table; 12. Upper top platform; 13. Guide column; 14. Hydraulic cylinder; 15. Upper pressing platform; 16. Lower pressing platform; 2. Correction assembly; 21. Fixed base; 22. Cylinder 1; 23. Push plate; 24. Guide rod; 25. Correction block; 26. Base plate; 261. Waist groove; 27. Lead screw; 28. Movable sleeve; 29. ​​Mounting seat; 210. Cylinder 2; 211. Support inclined plate; 212. Protruding seat; 213. Pressing rod; 214. Rotating rod; 215. Pressing plate; 216. Spring; 218. Bevel gear 1; 219. Support rod; 220. Bevel gear 2; 221. Support sleeve; 222. Gear part; 223. Rack; 224. Fixed sleeve. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0026] Reference Figures 1-4 As shown, this utility model embodiment provides an automatic carbon fiber correction hot pressing forming device, including a hot pressing assembly 1. The hot pressing assembly 1 includes a hot pressing table 11, which provides a stable bearing platform for the whole assembly. An upper top platform 12 is fixedly installed on the hot pressing table 11 by four sets of guide columns 13. The four sets of guide columns 13 are rectangularly distributed to ensure the parallelism of the vertical movement. A hydraulic cylinder 14 is fixedly installed on the upper top platform 12, which serves as a power source. The upper top platform 12 provides a mounting carrier for the hydraulic cylinder 14 and, together with the guide columns 13, forms a frame structure with the hot pressing table 11.

[0027] The cylinder barrel of the hydraulic cylinder 14 is reliably connected to the upper top platform 12. The piston rod end passes through the upper top platform 12 and is fixedly installed on the upper pressure platform 15. The hydraulic cylinder 14 can drive the upper pressure platform 15 to make linear movements along the axis of the guide column 13, moving closer to or away from the hot press platform 11. At the same time, a lower pressure platform 16 is provided on the upper surface of the hot press platform 11, corresponding to the position directly below the upper pressure platform 15. The lower pressure platform 16 corresponds to and cooperates with the upper pressure platform 15. The carbon fiber material to be processed and the matching glass plate can be placed on the lower pressure platform 16. During the downward pressing process of the upper pressure platform 15, the hot pressing forming process is completed together.

[0028] Reference Figures 2-4 As shown, in order to correct the deviation of the glass plate placed on the lower pressure table 16, four sets of correction components 2 are set on the hot pressure table 11 and are symmetrically distributed in pairs on the four sides of the lower pressure table 16. Each set of correction components 2 includes an alignment part fixedly installed on the hot pressure table 11. The alignment part is based on the fixed base 21. The fixed base 21 is rigidly connected to the hot pressure table 11 by bolts to ensure the stability of the overall structure. A cylinder 22 is horizontally installed on the fixed base 21. Its telescopic end passes through the fixed base 21 and is fixedly connected to the push plate 23 to provide horizontal driving force for the push plate 23. At the same time, two sets of guide rods 24 are symmetrically fixed on the side of the push plate 23 near the cylinder 22. The guide rods 24 move through the fixed base 21 and cooperate with the linear bearing to form a double guide structure, which effectively ensures the straightness of the push plate 23 when it moves with the telescopic end of the cylinder 22 and avoids tilting and deviation during the movement.

[0029] An L-shaped correction block 25 is fixedly installed on the side of the push plate 23 away from the fixed base 21. A notch is opened on the surface of the lower pressure table 16 at the corresponding position, so that the correction block 25 can be partially embedded to limit its horizontal sway and improve the correction stability. A silicone anti-slip pad is pasted on the contact surface of the correction block 25 near the glass plate. This not only avoids damage to the glass plate through flexible contact, but also increases friction to prevent slippage during pushing. In addition, a pressure sensor is embedded in the silicone anti-slip pad, which can monitor the contact pressure in real time to ensure that sufficient pushing force can be applied to complete the positioning during the correction process, but the glass plate will not be broken due to excessive pressure, thus achieving safe and accurate correction operation.

[0030] In this application, an elastic sealing gasket is attached to the contact area between the correction block 25 and the notch groove of the lower pressure table 16. The sealing gasket not only fills the mechanical fit gap and prevents the correction block from generating debris and wear due to collision during reciprocating motion, but also forms a flexible buffer during correction to prevent micro-cracks from appearing on the glass plate due to rigid impact.

[0031] Reference Figures 3-4 As shown, to further ensure the positional stability of the prepreg during the hot pressing process, a pressing part for restricting the prepreg on the glass plate is provided on the top of the fixed base 21. This pressing part includes a base plate 26 fixedly installed on the top of the fixed base 21, and a mounting seat 29 is installed on the base plate 26. The mounting seat 29 has two sets of inclined support plates 211 arranged in an inclined state. A cylinder 210 is movably assembled between the two sets of inclined support plates 211 to provide power for the pressing action. Simultaneously, a protruding seat 212 is fixed on the mounting seat 29. A pressing rod 213 is movably provided at one end of the protruding seat 212, and a rotating rod 214 is movably connected to the protruding seat 212. The rotating rod 214 is movably connected to the pressing rod 213 via an auxiliary plate (specific structure not shown in the figure), forming a transmission linkage structure.

[0032] A pressure plate 215 is movably installed through one end of the pressure rod 213. The pressure plate 215 is equipped with a support shaft, which passes through one end of the pressure rod 213. A spring 216 is sleeved on the support shaft. The two ends of the spring 216 are connected to the upper surface of the pressure plate 215 and the lower surface of the pressure rod 213, respectively. By utilizing the elastic characteristics of the spring 216, the pressure plate 215 has a buffer function when pressing the prepreg. It can not only firmly press the prepreg to prevent it from shifting, but also prevent the prepreg from being damaged due to excessive pressure, thus achieving reliable and flexible pressing and restraint of the prepreg.

[0033] When the prepreg needs to be pressed, cylinder 210 is activated. Cylinder 210 is triggered by the control system of hot pressing assembly 1 according to the hot pressing process or correction completion signal. The extension / contraction of the telescopic rod of cylinder 210 pushes the two sets of support inclined plates 211 to move in angular linkage. Since the support inclined plates 211 are installed at an inclination on the mounting base 29 and are movably connected to cylinder 210, the cylinder action will cause the inclined plates to swing in the plane. The swing of the support inclined plates 211, through cooperation with the mounting base 29 and the protrusion 212, drives the rotating rod 214 to rotate around the fulcrum of the protrusion 212. When the rotating rod 214 rotates, it pulls / pushes the pressing rod 213 with the help of the auxiliary plate (which can be understood as a connecting rod or slider structure), so that the pressing rod 213 performs a pressing / lifting action around its own connection point.

[0034] Reference Figures 3-4 As shown, in order to realize the coordination of correction and holding actions, a drive unit is provided on the base plate 26. The drive unit is used to simultaneously drive the holding part to move and avoid when the alignment part clamps and corrects the deviation, and return to the working position when hot pressing. A through groove 261 is provided on the base plate 26. The drive unit includes a lead screw 27 connected to the inner wall of the groove 261 by a bearing, and a movable sleeve 28 is threaded on the lead screw 27. The movable sleeve 28 is clearance-fitted with the inner wall of the groove 261, restricting the movable sleeve 28 to move only in a straight line along the groove 261. At the end of the lead screw 27 near the groove 261, it is rotatably connected to the inner wall of the groove 261 by a bearing.

[0035] Furthermore, a fixed bevel gear 218 is fixed on the lead screw 27. The bottom surface of the base plate 26 is connected to the support rod 219 through two sets of support sleeves 221 bearings. The support sleeves 221 are used to provide stable support for the support rod 219. The support rod 219 has stepped shafts (not shown in the figure) at both ends to prevent axial movement. A bevel gear 220 is fixedly connected to one end of the support rod 219. The bevel gear 220 meshes with the bevel gear 218. The other end of the support rod 219 is fixedly connected to the gear part 222. At the same time, the guide rod 24 is fixed with a support rack 223 through the fixed sleeve 224. The support rack 223 meshes with the gear part 222.

[0036] When the cylinder 22 of the alignment section pushes the guide rod 24 to move horizontally (causing the glass plate to correct its alignment), the rack 223 on the guide rod 24 moves synchronously, driving the gear section 222 to rotate. This rotation is transmitted through the support rod 219, causing the bevel gear 220 to drive the bevel gear 218 to rotate, thus rotating the lead screw 27. The lead screw 27 drives the movable sleeve 28 to move linearly along the waist groove 261 through the threaded pair, thereby synchronously pulling the pressing part to move horizontally, so that the pressing part moves synchronously to the pressing position. At this time, the starting cylinder 210 is activated to drive the pressing rod 213 to press down, and the prepreg is flexibly pressed through the pressing plate 215 + spring 216 structure.

[0037] After the glass plate is corrected, cylinder 22 resets and simultaneously moves the holding part away from the glass plate, so that the movable sleeve 28 returns to its original position and the holding part returns to its working position, ensuring that the holding part does not interfere with hot pressing under default conditions and is accurately positioned when required.

[0038] Working principle: When this automatic carbon fiber correction hot pressing molding device is working, the glass plate with prepreg is first placed on the lower pressing platform 16 of the hot pressing platform 11. In the hot pressing assembly 1, the hydraulic cylinder 14 can drive the upper pressing platform 15 to move closer to or further away from the hot pressing platform 11 along the axis of the guide column 13, providing power for the hot pressing operation. When the four sets of correction assemblies 2 are started, the cylinder 22 of the alignment part pushes the guide rod 24 and the push plate 23 to drive the correction block 25 to clamp and correct the glass plate on all four sides. During this process, the guide rod 24 moves, causing the rack 223 of the drive part to move synchronously. Through the gear part 222, the support rod 219, and the bevel gear set (bevel gear 1 218 and bevel gear 220), the lead screw 27 rotates, driving the movable sleeve 28 to move along the waist groove 261, and synchronously pulling the pressing part horizontally to the pressing position.

[0039] Once the glass plate is aligned, cylinder 210 of the holding section is activated. Its telescopic rod drives the support inclined plate 211 to swing. Through the rotation rod 214 and the holding rod 213, the holding plate 215, with the help of spring 216, flexibly holds the edges and corners of the prepreg, ensuring that the relative position of the prepreg and the glass plate is fixed. Subsequently, hydraulic cylinder 14 drives the upper pressing platform 15 to press down, cooperating with the lower pressing platform 16 to complete the hot pressing. After the hot pressing is completed, hydraulic cylinder 14, cylinder 210, and cylinder 22 are reset in sequence. The drive unit reverses its transmission to return the holding section to the avoidance position, completing one work cycle. Through the linkage of each component, the process of first aligning, then holding, and finally hot pressing is achieved, ensuring the forming quality of the carbon fiber sheet.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An automatic carbon fiber correction hot pressing forming device, characterized in that: include A hot press table (11) is provided with a lower press table (16) on its upper surface; Four sets of correction components (2) are arranged on the hot press table (11). Each set of correction components (2) includes an alignment part installed on the hot press table (11) for correcting the four sides of the glass plate. The alignment part is provided with a pressing part for restricting the prepreg on the glass plate. The pressing part is provided with a driving part for realizing the cooperation between correction and pressing.

2. The automatic carbon fiber correction hot pressing forming device according to claim 1, characterized in that: The alignment part includes a fixed base (21) installed on the hot press table (11). A cylinder (22) is horizontally installed on the fixed base (21). The telescopic end of the cylinder (22) passes through the fixed base (21) and is fixedly connected to the push plate (23). Two sets of guide rods (24) are symmetrically fixed on the side of the push plate (23) near the cylinder (22). The guide rods (24) movably pass through the fixed base (21) and cooperate with the linear bearing to form a double guide structure. An L-shaped correction block (25) is installed on the side of the push plate (23) away from the fixed base (21). A notch is opened at the corresponding position on the surface of the lower press table (16).

3. The carbon fiber automatic correction hot pressing forming device according to claim 2, characterized in that: The corrective block (25) has a silicone anti-slip pad attached to the contact surface near the glass plate, and a pressure sensor is embedded in the silicone anti-slip pad.

4. The automatic carbon fiber correction hot pressing forming device according to claim 2, characterized in that: The pressing part includes a base plate (26) installed on the top of the fixed base (21). A mounting seat (29) is installed on the base plate (26). The mounting seat (29) is provided with two sets of inclined support plates (211) arranged in an inclined state. A cylinder (210) is movably assembled between the two sets of inclined support plates (211). The mounting seat (29) has a protruding seat (212). A pressing rod (213) is movably provided at one end of the protruding seat (212). A rotating rod (214) is movably connected to the protruding seat (212). The rotating rod (214) is movably connected to the pressing rod (213) through an auxiliary plate.

5. The automatic carbon fiber correction hot pressing forming device according to claim 4, characterized in that: One end of the holding rod (213) is movably connected to a holding plate (215). The holding plate (215) is equipped with a support shaft, which passes through one end of the holding rod (213). A spring (216) is sleeved on the support shaft. The two ends of the spring (216) are respectively connected to the upper surface of the holding plate (215) and the lower surface of the holding rod (213).

6. The carbon fiber automatic correction hot pressing forming device according to claim 4, characterized in that: The base plate (26) has a through groove (261). The drive unit includes a lead screw (27) connected to the inner wall of the groove (261) by a bearing. A movable sleeve (28) is threaded onto the lead screw (27). The movable sleeve (28) is clearance-fitted with the inner wall of the groove (261) to restrict the movable sleeve (28) from moving linearly along the groove (261). The end of the lead screw (27) near the groove (261) is rotatably connected to the inner wall of the groove (261) through a bearing.

7. The automatic carbon fiber correction hot pressing forming device according to claim 6, characterized in that: The lead screw (27) has a fixed bevel gear (218). The bottom surface of the base plate (26) is connected to the support rod (219) through two sets of support sleeves (221) bearings. The support rod (219) has stepped shafts at both ends. One end of the support rod (219) is connected to a bevel gear (220), which meshes with the bevel gear (218). The other end of the support rod (219) is connected to a gear part (222). The guide rod (24) is fixed with a support rack (223) through a fixing sleeve (224), which meshes with the gear part (222).

8. The automatic carbon fiber correction hot pressing forming device according to claim 2, characterized in that: An elastic sealing gasket is attached to the contact area between the correction block (25) and the notch groove of the lower pressure table (16). The sealing gasket is used to form a flexible buffer during correction.

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