A prepreg molding side clamping structure

Abstract

This utility model relates to the field of composite material molding technology, and more particularly to a side clamping structure for prepreg molding, comprising: a base; a lower clamping assembly connected to the base; a hinge seat fixed to the base and located on one side of the lower clamping assembly; an upper clamping assembly, which is positioned opposite to the lower clamping assembly in the clamping state; a connecting member, one end of which is integrally formed or connected to the upper clamping assembly, and the other end of which is rotatably connected to the hinge seat; and a flipping drive member, one end of which is rotatably connected to the base, and the other end of which is connected to the upper clamping assembly, for driving the opening and closing of the upper clamping assembly relative to the lower clamping assembly; wherein, the hinge seat has a limiting part, and when the upper clamping assembly is closed to be parallel to the lower clamping assembly, the connecting member abuts against the limiting part. This utility model, by providing a limiting part on the hinge seat, prevents the upper clamping assembly from continuing to press down, thereby improving the reliability of prepreg clamping and avoiding stress concentration or damage caused by excessive clamping force.

Description

Technical Field

[0001] This utility model relates to the field of composite material molding technology, and in particular to a prepreg molding side clamping structure. Background Technology

[0002] Prepreg refers to sheets formed by pre-impregnating fiber-reinforced materials with resin and then undergoing semi-curing. These sheets are storable, cuttable, and can be cured under heat and pressure. Common prepreg molding processes include vacuum bag forming, hot press molding, and automated fiber placement. In these processes, such as hot press molding, clamping the prepreg is unavoidable.

[0003] In the existing technology, conventional clamping methods include metal pressure bar clamping, elastic clamping, vacuum adsorption edge strip clamping, and magnetic fixation. However, during the clamping process, traditional metal pressure bars are prone to local stress concentration, which may damage or cut the fibers and reduce mechanical properties.

[0004] Therefore, ensuring the reliability of clamping prepreg and avoiding damage to the clamped workpiece has become an urgent problem to be solved. Utility Model Content

[0005] In view of at least one of the above technical problems, the present invention provides a prepreg molding side clamping structure, which improves the clamping reliability and avoids damage to the clamped prepreg.

[0006] According to a first aspect of the present invention, a prepreg molding side clamping structure is provided, comprising: Base; The lower clamping assembly is connected to the base and is used for contact with the lower surface of the prepreg; A hinged seat is fixed to the base and located on one side of the lower clamping member; The upper clamping assembly is positioned opposite the lower clamping assembly in the clamping state and is used to contact the upper surface of the prepreg. The connector has one end integrally formed or connected to the upper clamping assembly, and the other end rotatably connected to the hinge seat; A flipping drive component is rotatably connected to the base at one end and connected to the upper clamping assembly at the other end, used to drive the upper clamping assembly to open and close relative to the lower clamping assembly; The hinge seat has a limiting part, which is configured such that when the upper clamping assembly is closed to be parallel to the lower clamping assembly, the connecting member abuts against the limiting part to limit the further downward pressure of the upper clamping assembly.

[0007] Furthermore, the lower clamping assembly includes a first heating plate and a lower clamping member that is fitted and connected to the first heating plate, wherein the first heating plate is connected to the base.

[0008] Furthermore, a sliding assembly is provided between the first heating plate and the base. The bottom of the sliding assembly is connected to the base, and the top is connected to the first heating plate. The sliding assembly can be slidably disposed relative to the first heating plate in a direction parallel to the length direction of the first heating plate.

[0009] Furthermore, the sliding assembly includes a slider and a slide rail that is slidably connected to the slider.

[0010] Furthermore, the upper clamping assembly includes an upper clamping member, a second heating plate that is fitted and connected to the upper clamping member, and a base plate that is connected to the second heating plate, and the connecting member is connected to the base plate.

[0011] Furthermore, the first heating plate is an electric heating plate or a hot water pipe heating plate, and the second heating plate is an electric heating plate or a hot water pipe heating plate.

[0012] Furthermore, a pressure driving component is also fixed on the substrate, and the driving end of the pressure driving component passes through the substrate and is connected to the second heating plate to apply force towards the second heating plate in the vertical direction.

[0013] Furthermore, a guide rod is fixed to the side of the second heating plate facing the substrate, and the substrate has a linear bearing corresponding to the guide rod, and at least three guide rods are provided.

[0014] Furthermore, a connecting rod is also connected to the substrate and is inclined toward one side of the flipping drive. The flipping drive is a linear drive, and the driving end of the flipping drive is rotatably connected to the free end of the connecting rod.

[0015] Furthermore, the hinge seat includes a base plate and two vertical plates vertically connected to the base plate. The two vertical plates are rotatably connected to a pivot near the top position. The connector is fixed to the pivot. A step is formed by a recess on the side wall of the two vertical plates facing the middle. The limiting part is fixed on the step. When the connector is rotated to a horizontal state, its bottom overlaps with the limiting part.

[0016] The beneficial effects of this utility model are as follows: This utility model is connected to the upper clamping assembly through a connector, and the upper clamping assembly is opened and closed by a flipping drive, thereby achieving clamping of the side of the prepreg. Furthermore, the limiting part provided on the hinge seat prevents the upper clamping assembly from pressing down further when it is parallel to the lower clamping assembly, thereby improving the reliability of clamping the prepreg and avoiding stress concentration or damage caused by excessive clamping force. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the prepreg molding side clamping structure in an embodiment of the present invention; Figure 2 This is a side view of the prepreg molding side clamping structure in an embodiment of the present invention; Figure 3 As an embodiment of this utility model Figure 1 Sectional view along line AA in the middle; Figure 4 This is a schematic diagram of the upper clamping component when it is opened in an embodiment of this utility model; Figure 5 This is an exploded exploded view of the prepreg molding side clamping structure in an embodiment of this utility model; Figure 6 As an embodiment of this utility model Figure 5 A magnified schematic diagram of the structure at point B in the diagram; Figure 7 This is a schematic diagram of the hinge seat in an embodiment of the present utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Base; 2. Lower clamping assembly; 21. First heating plate; 22. Lower clamping member; 23. Sliding assembly; 23a. Slider; 23b. Slide rail; 3. Hinge seat; 31. Limiting part; 32. Base plate; 33. Vertical plate; 33a. Step; 34. Rotating shaft; 4. Upper clamping assembly; 41. Upper clamping member; 42. Second heating plate; 43. Base plate; 44. Pressure driving member; 45. Guide rod; 46. Linear bearing; 5. Connecting member; 6. Tilting driving member; 7. Connecting rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] like Figures 1 to 7 The prepreg molding side clamping structure shown includes a base 1, a lower clamping assembly 2, a hinged seat 3, an upper clamping assembly 4, a connector 5, and a flipping drive 6, as detailed below. Figure 1 and Figure 2 As shown in the embodiment of this utility model, the base 1 is used to support the entire side clamping structure, and it can be plate-shaped or made of other profiles. The lower clamping assembly 2 is connected to the base 1 for contact with the lower surface of the prepreg; the hinge seat 3 is fixed to the base 1 and is located on one side of the lower clamping member 22, as shown in the figure. Figure 2 As shown, the hinge seat 3 is located to the left of the lower clamping assembly 2, and its function is to provide a connection base for opening or closing the upper clamping assembly 4. The upper clamping assembly 4 is positioned opposite the lower clamping assembly 2 in the clamping state, and is used to contact the upper surface of the prepreg. It should be noted that when the upper clamping assembly 4 and the lower clamping assembly 2 are in a relative state, the edge of the prepreg is clamped. The distance between the upper clamping assembly 4 and the lower clamping assembly 2 is no greater than the thickness of the prepreg, in order to achieve clamping of the side of the prepreg.

[0024] Please continue to refer to Figure 1 and Figure 2In this embodiment of the invention, one end of the connector 5 is integrally formed or connected to the upper clamping assembly 4, and the other end is rotatably connected to the hinge seat 3. It should be noted that in this embodiment, the connector 5 can be an integral structure extending from the upper clamping assembly 4, or it can be connected to the upper clamping assembly 4 by welding or screwing. Regarding the rotatable connection between the connector 5 and the hinge seat 3, there are various forms in the prior art, which will not be described in detail here.

[0025] In an embodiment of this utility model, one end of the flipping drive 6 is rotatably connected to the base 1, and the other end is connected to the upper clamping assembly 4, used to drive the upper clamping assembly 4 to open and close relative to the lower clamping assembly 2. It should be noted that in an embodiment of this utility model, the flipping drive 6 can have various structural forms. For example, it can be a motor directly connected to the connecting member 5, or it can be connected via gears, sprockets, or synchronous pulleys to drive the rotation of the connecting member 5. Alternatively, it can be as follows... Figure 1 The rotation of the connecting member 5 is achieved by a linearly moving drive rod; the tilting drive member 6 in this form can be a linearly driven structure such as a cylinder or hydraulic cylinder in the prior art.

[0026] Please refer to Figure 3 In an embodiment of this utility model, the hinge seat 3 has a limiting part 31. The limiting part 31 is configured such that when the upper clamping assembly 4 is closed to be parallel to the lower clamping assembly 2, the connecting member 5 abuts against the limiting part 31 to limit the continued downward pressure of the upper clamping assembly 4. That is, Figure 3 and Figure 4 As shown, the limiting part 31 is provided on the hinge seat 3 and is located at the bottom when the connector 5 is flipped to the horizontal state. With this structural form, when the upper clamping assembly 4 rotates to be opposite to the lower clamping assembly 2 to clamp the prepreg, the connector 5 abuts against the limiting part 31, thereby limiting the continued downward pressure of the connector 5. With this structural form, the stress concentration phenomenon formed by the upper clamping assembly 4 during clamping can be avoided, and the reliability of clamping the prepreg can be improved.

[0027] In the above embodiment, the upper clamping assembly 4 is connected to the connecting member 5, and the opening and closing of the upper clamping assembly 4 is driven by the flipping drive member 6, thereby achieving clamping of the prepreg side. Furthermore, the limiting part 31 provided on the hinge seat 3 prevents the upper clamping assembly 4 from continuing to press down when it is parallel to the lower clamping assembly 2, thereby improving the reliability of clamping the prepreg and avoiding stress concentration or damage caused by excessive clamping force.

[0028] Based on the above embodiments, such as Figure 5As shown in the embodiment of this utility model, the lower clamping assembly 2 includes a first heating plate 21 and a lower clamping member 22 that is fitted and connected to the first heating plate 21. The first heating plate 21 is connected to the base 1. In this embodiment of the utility model, the first heating plate 21 is used to generate heat and provide heat to the lower clamping member 22, thereby enabling the prepreg to cure under heating and pressure.

[0029] Furthermore, in embodiments of this utility model, since the heating plate expands and contracts when heated, to prevent the deformation of the first heating plate 21 during the heating process from affecting the straightness of the product, such as... Figure 6 As shown, a sliding assembly 23 is also provided between the first heating plate 21 and the base 1. The bottom of the sliding assembly 23 is connected to the base 1, and the top is connected to the first heating plate 21. The sliding assembly 23 is slidably disposed relative to the first heating plate 21 in a direction parallel to its length. By being slidably disposed relative to the first heating plate 21 in the length direction, the first heating plate 21 can undergo a slight displacement in the length direction when it expands, thereby maintaining its straightness. In embodiments of this utility model, the sliding assembly 23 has various structural forms; please refer to the following: Figure 6 The sliding component 23 includes a slider 23a and a slide rail 23b that is slidably connected to the slider 23a. It should be noted that in some embodiments of this invention, the slider 23a can be fixed to the base 1, and the corresponding slide rail 23b can be fixed to the first heating plate 21; or the slider 23a can be fixed to the first heating plate 21, and the slide rail 23b can be fixed to the base 1. Those skilled in the art can choose according to their needs.

[0030] Please continue to refer to Figure 3 In some embodiments of this utility model, the upper clamping assembly 4 includes an upper clamping member 41, a second heating plate 42 that is fitted and connected to the upper clamping member 41, and a base plate 43 that is connected to the second heating plate 42. The connecting member 5 is connected to the base plate 43. The function of the second heating plate 42 is to heat the upper clamping member 41, so that it cooperates with the lower clamping member 22 to heat both the upper and lower sides of the prepreg, thereby improving the uniformity of heating and improving the molding quality of the product.

[0031] In some embodiments of this utility model, the specific heating forms of the first heating plate 21 and the second heating plate 42 are varied. Specifically, the first heating plate 21 can be an electric heating plate or a hot water pipe heating plate, and the second heating plate 42 can also be an electric heating plate or a hot water pipe heating plate. An electric heating plate achieves heating by converting electrical energy into heat energy, for example, through an electric heating rod. A hot water pipe heating plate refers to a heating plate with water channels, where hot water circulates within the channels to heat the heating plate.

[0032] In embodiments of this utility model, in order to achieve adjustment of the clamping force, such as Figure 1 As shown, a pressure driving member 44 is also fixed on the substrate 43. The driving end of the pressure driving member 44 passes through the substrate 43 and is connected to the second heating plate 42 to apply force to the second heating plate 42 in the vertical direction. For example, when it is necessary to reduce the clamping force, the second heating plate 42 can be driven to rise, and vice versa. Since the pressure driving member 44 applies force in the vertical direction, the pressure it provides is more uniform than that of flipping, and it will not form concentrated stress at the edges as it does when flipping.

[0033] Based on the above embodiments, please continue to refer to Figure 3 In some embodiments of this invention, to further improve the uniformity of pressure application, a guide rod 45 is fixed to the side of the second heating plate 42 facing the substrate 43. The substrate 43 has a linear bearing 46 corresponding to the guide rod 45, and at least three guide rods 45 are provided. The cooperation between the guide rods 45 and the linear bearings 46 ensures the consistency of the force direction. By providing at least three guide rods 45, it can be ensured that the entire second heating plate 42 is subjected to pressure on the plane, thereby improving the stability and uniformity of the prepreg pressing.

[0034] In embodiments of this utility model, in order to improve the stability of the flip drive, such as Figure 1 and Figure 2 As shown, a connecting rod 7 is also connected to the substrate 43, which is inclined toward the side of the flipping drive 6. The flipping drive 6 is a linear drive, and the driving end of the flipping drive 6 is rotatably connected to the free end of the connecting rod 7. By tilting the connecting rod 7, the degree of angular flipping of the flipping drive 6 during linear drive is reduced, thereby improving the stability of the drive.

[0035] In the embodiments of this utility model, the specific structure of the hinge seat 3 is as follows: Figure 7 As shown, the hinge seat 3 includes a base plate 32 and two vertical plates 33 perpendicularly connected to the base plate 32. The two vertical plates 33 are rotatably connected to a pivot 34 near their top positions. A connecting member 5 is fixed to the pivot 34. A step 33a is formed by a recess on the sidewall of the two vertical plates 33 facing the center. A limiting part 31 is fixed to the step 33a. When the connecting member 5 rotates to a horizontal position, its bottom overlaps with the limiting part 31. The structure of the step 33a improves the reliability of fixing the limiting part 31, thereby improving the reliability of the limiting action.

[0036] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A prepreg molding side clamping structure, characterized in that, include: Base; The lower clamping assembly is connected to the base and is used for contact with the lower surface of the prepreg; A hinged seat is fixed to the base and located on one side of the lower clamping assembly; The upper clamping assembly is positioned opposite the lower clamping assembly in the clamping state and is used to contact the upper surface of the prepreg. The connector has one end integrally formed or connected to the upper clamping assembly, and the other end rotatably connected to the hinge seat; A flipping drive component is rotatably connected to the base at one end and connected to the upper clamping assembly at the other end, used to drive the upper clamping assembly to open and close relative to the lower clamping assembly; The hinge seat has a limiting part, which is configured such that when the upper clamping assembly is closed to be parallel to the lower clamping assembly, the connecting member abuts against the limiting part to limit the further downward pressure of the upper clamping assembly.

2. The prepreg molding side clamping structure according to claim 1, characterized in that, The lower clamping assembly includes a first heating plate and a lower clamping member that is fitted and connected to the first heating plate, wherein the first heating plate is connected to the base.

3. The prepreg molding side clamping structure according to claim 2, characterized in that, A sliding assembly is also provided between the first heating plate and the base. The bottom of the sliding assembly is connected to the base, and the top is connected to the first heating plate. The sliding assembly can be slidably disposed relative to the first heating plate in a direction parallel to the length direction of the first heating plate.

4. The prepreg molding side clamping structure according to claim 3, characterized in that, The sliding component includes a slider and a slide rail that is slidably connected to the slider.

5. The prepreg molding side clamping structure according to claim 2, characterized in that, The upper clamping assembly includes an upper clamping member, a second heating plate that is fitted and connected to the upper clamping member, and a base plate that is connected to the second heating plate. The connecting member is connected to the base plate.

6. The prepreg molding side clamping structure according to claim 5, characterized in that, The first heating plate is an electric heating plate or a hot water pipe heating plate, and the second heating plate is an electric heating plate or a hot water pipe heating plate.

7. The prepreg molding side clamping structure according to claim 5, characterized in that, A pressure driving component is also fixed on the substrate. The driving end of the pressure driving component passes through the substrate and is connected to the second heating plate to apply force towards the second heating plate in the vertical direction.

8. The prepreg molding side clamping structure according to claim 7, characterized in that, A guide rod is also fixed on the side of the second heating plate facing the substrate. The substrate has a linear bearing corresponding to the guide rod, and at least three guide rods are provided.

9. The prepreg molding side clamping structure according to claim 5, characterized in that, The substrate is also connected to a connecting rod that is inclined toward one side of the flipping drive. The flipping drive is a linear drive, and the driving end of the flipping drive is rotatably connected to the free end of the connecting rod.

10. The prepreg molding side clamping structure according to claim 1, characterized in that, The hinged seat includes a base plate and two vertical plates that are perpendicularly connected to the base plate. The two vertical plates are rotatably connected to a pivot near the top. The connector is fixed to the pivot. The sidewalls on the same side of the two vertical plates are recessed towards the middle to form a step. The limiting part is fixed on the step. When the connector is rotated to a horizontal state, its bottom overlaps with the limiting part.

Images