Hot compression molding device

Abstract

The utility model relates to the technical field of machining and manufacturing, in particular to a hot compression molding device. The groove of the lower die provided by the utility model is provided with the first curved wall and the second curved wall which are arranged at the included angle, so that the cross section line segment of the first curved wall and the cross section line segment of the second curved wall are arranged at the included angle with the bottom surface of the lower die, and the cross section line segment of the first curved wall and the cross section line segment of the second curved wall are not vertical to the ground; when a molten material sheet is stamped, the material can slowly move along the first curved wall and the second curved wall, and compared with the prior art that the curved wall is perpendicular to the ground, the overall thickness of the curved frame obtained by the hot compression molding device is uniform. The upper die and the lower die are accurately matched, and pressure is applied to make the material sheet slide and be bent along with the die forming face.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing manufacturing technical field especially, relates to a hot die forming device. BACKGROUND

[0002] Thermoplastic resin-based composite material has been successfully applied to the floor, corner piece, leading edge, beam rib and other structures of the airplane because of its advantages such as wear resistance, corrosion resistance, good impact resistance, long service life, short molding time and recyclability. The hat-shaped stringer stiffened wall plate and the curved frame are connected in the general wall plate structure of the airplane fuselage. The curved frame is divided into a metal curved frame and a composite curved frame. The composite curved frame can be manufactured by using thermosetting composite material or thermoplastic composite material. Because the structure of the curved frame is complex, the thermosetting composite material curved frame is generally formed by manual laying or hot diaphragm preformed curved frame parts, and finally cured by hot pressing tank; the thermoplastic resin does not have adhesion at room temperature, and it is difficult to lay manually, so the forming method of the thermoplastic composite material curved frame includes hot die pressing and automatic fiber laying.

[0003] When the cross section of the curved frame is Z-shaped, the thickness difference between the bending part and other positions of the curved frame is large in the forming process of the current hot die forming device, resulting in uneven thickness of the whole curved frame.

[0004] Therefore, there is an urgent need for a hot die forming device to solve the above technical problems. INVENTION CONTENTS

[0005] The utility model discloses a hot die forming device, which can reduce the thickness difference between the bending part and other positions of the curved frame and improve the uniformity of the thickness of the whole curved frame.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A hot die forming device is provided for manufacturing a Z-shaped curved frame, which comprises:

[0008] An upper die has a downward forming protrusion;

[0009] A lower die has a groove matched with the forming protrusion, and the groove has a first curved wall, a second curved wall, a third curved wall and a fourth curved wall connected in sequence. The second curved wall is arranged at an angle with the first curved wall and the third curved wall, and the third curved wall is arranged at an angle with the second curved wall and the fourth curved wall. The cross section line segment of the first curved wall, the cross section line segment of the second curved wall, the cross section line segment of the third curved wall and the cross section line segment of the fourth curved wall are all arranged at an angle with the bottom surface of the lower die.

[0010] As a preferred technical scheme of the hot die forming device, the cross section of the first curved wall, the cross section of the second curved wall, the cross section of the third curved wall and the cross section of the fourth curved wall are arranged at an acute angle with the bottom surface of the lower die.

[0011] As a preferred technical scheme of the hot die forming device, the lower die is provided with a slip control mechanism, the length extension direction of the slip control mechanism is perpendicular to the length extension direction of the lower die, and the slip control mechanism is used for connecting the sheet to be punched and deformed.

[0012] As a preferred technical scheme of the hot die forming device, the slip control mechanism comprises a first fixed part, a second fixed part and a tensile deformation part, the two ends of the tensile deformation part are respectively connected with the first fixed part and the second fixed part, and one of the first fixed part and the second fixed part is fixedly arranged on the lower die, and the other is fixedly arranged on the sheet to be punched and deformed.

[0013] As a preferred technical scheme of the hot die forming device, the tensile deformation part is a spring; or,

[0014] The lower die is provided with two connecting grooves, the two connecting grooves are oppositely arranged on the two sides of the groove, and the first fixed part or the second fixed part is fixedly arranged in the connecting groove.

[0015] As a preferred technical scheme of the hot die forming device, the forming protrusion and the lower die are provided with thermocouple holes capable of inserting thermocouples.

[0016] As a preferred technical scheme of the hot die forming device, the top of the lower die is provided with a sheet positioning mechanism for positioning the sheet, the sheet positioning mechanism has a first positioning block and a second positioning block, and the first positioning block is fixedly connected with the second positioning block perpendicularly.

[0017] As a preferred technical scheme of the hot die forming device, the top surface of the first positioning block is provided with a plurality of first position adjusting holes, the side wall connected with the second positioning block of the first positioning block is provided with a plurality of second position adjusting holes, the first positioning block is fixedly connected with the lower die by a bolt passing through any first position adjusting hole, and the second positioning block is fixedly connected with the first positioning block by a bolt passing through any second position adjusting hole.

[0018] As a preferred technical scheme of the hot die forming device, the top surface of the lower die extends in the direction of the upper die and has a sheet placing protrusion, the sheet placing protrusion is used for bearing the sheet, and the sheet placing protrusion is located on the two sides of the groove.

[0019] As a preferred technical scheme of the hot die forming device, the top surface of the lower die is further provided with a pad, and the pad is arranged on the side of the material piece placement protrusion away from the groove.

[0020] Alternatively, the upper die and the lower die are both provided with guide holes, the guide holes of the upper die and the guide holes of the lower die are one-to-one correspondingly arranged, and a guide column is arranged in the guide holes to provide guidance for the upper die.

[0021] The hot die forming device has at least the following beneficial effects:

[0022] The groove of the lower die has the first curved wall and the second curved wall arranged at an angle, and the cross-section line segment of the first curved wall and the cross-section line segment of the second curved wall are both arranged at an angle with the bottom surface of the lower die, so that the cross-section line segment of the first curved wall and the cross-section line segment of the second curved wall are not perpendicular to the ground. When the molten material piece is punched, the material will slowly move along the first curved wall and the second curved wall. Compared with the prior art in which the curved wall is arranged vertically to the ground, the overall thickness of the curved frame obtained by the hot die forming device is more uniform. The upper die and the lower die are accurately matched, and the pressure is applied to make the material piece slide and bend along the die forming surface. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the contents of the embodiments of the present application and the drawings.

[0024] Figure 1 The first exploded schematic view of the hot die forming device provided by the embodiments of the present application is provided.

[0025] Figure 2 The second exploded schematic view of the hot die forming device provided by the embodiments of the present application is provided.

[0026] Figure 3 The structural schematic view of the sliding control mechanism provided by the embodiments of the present application is provided.

[0027] Figure 4 The structural schematic view of the material piece positioning mechanism provided by the embodiments of the present application is provided.

[0028] Figure 5 The local structural schematic view of the curved frame provided by the embodiments of the present application is provided.

[0029] In the drawings:

[0030] 1, upper mold; 11, forming protrusion; 111, fifth curved wall; 112, sixth curved wall; 113, seventh curved wall; 114, eighth curved wall; 12, thermocouple hole; 13, guide hole; 2, lower mold; 21, groove; 211, first curved wall; 212, second curved wall; 213, third curved wall; 214, fourth curved wall; 22, connecting groove; 3, slip control mechanism; 31, first fixed part; 32, second fixed part; 33, tensile deformation part; 4, tablet positioning mechanism; 41, first positioning block; 411, first position adjusting hole; 412, second position adjusting hole; 42, second positioning block; 421, through hole; 5, tablet placing protrusion; 6, cushion block; 7, guide column; 100, curved frame; 200, tablet. DETAILED DESCRIPTION

[0031] The utility model will be explained in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the utility model, and are not limited to the utility model. In addition, it should be noted that in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0032] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0034] In the description of the embodiments, the terms "upper", "lower", "right", and the like orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0035] As Figures 1 to 5 shown, in order to reduce the thickness difference between the bending part of the Z-shaped curved frame 100 and other positions, and improve the uniformity of the overall thickness of the curved frame 100, the utility model provides a hot die forming device.

[0036] Specifically, as Figure 1 and Figure 2 shown, the hot die forming device is used for manufacturing the Z-shaped curved frame 100, and the hot die forming device comprises an upper die 1 and a lower die 2, wherein the upper die 1 has a downward forming protrusion 11, the lower die 2 has a groove 21 matched with the forming protrusion 11, the groove 21 has a first curved wall 211 and a second curved wall 212 arranged at an angle, and the cross-sectional line segment of the first curved wall 211 and the cross-sectional line segment of the second curved wall 212 are both arranged at an angle with the bottom surface of the lower die 2.

[0037] In some embodiments, the cross-sectional line segment of the first curved wall 211, the cross-sectional line segment of the second curved wall 212, the cross-sectional line segment of the third curved wall 213 and the cross-sectional line segment of the fourth curved wall 214 are all arranged at an acute angle with the bottom surface of the lower die 2. Such arrangement reduces the downward flow rate of the material and improves the uniformity of the wall thickness of the curved frame 100.

[0038] The web and the edge strip of the curved frame 100 have a certain curvature, so the corresponding curved frame web and edge strip forming surface of the upper die 1 and the lower die 2 are designed to be arc-shaped, consistent with the part curved surface characteristics and size of the curved frame 100. Considering the influence of resin flow after melting on the R angle on both sides of the curved frame 100 and the forming quality of the edge strip, in order to ensure the quality of the simultaneous forming of the R angle on both sides and the edge strip, the web forming surface is designed to have a certain angle with the horizontal plane.

[0039] Specifically, the cross-sectional line segment of the second curved wall 212 and the cross-sectional line segment of the third curved wall 213 are both preferably arranged at an angle of 30°-45° with the bottom surface of the lower die 2, and more specifically, the cross-sectional line segment of the second curved wall 212 and the cross-sectional line segment of the third curved wall 213 are both arranged at an angle of 45° with the bottom surface of the lower die 2, further ensuring the uniformity of the wall thickness of the curved frame 100.

[0040] As Figure 5As shown, considering the difference between the inner radius and the outer radius of the R angle of the curved frame 100 due to the thickness difference of the part, the R1 angle of the upper die 1 and the R2 angle of the curved frame 100 of the lower die 2 are designed. Assuming that the theoretical thickness of the part is L, the R1 angle of the lower die 2 is the inner R angle of the part, and the radius is R1, then the radius corresponding to the R1 angle of the upper die 1 is R1+L; the R2 angle of the lower die 2 is the outer R angle of the curved frame 100, and the radius is R2, then the radius corresponding to the R2 angle of the upper die 1 is R2-L.

[0041] When the material is placed on the lower die 2, the material sheet 200 slips and deforms under the pressure of the upper die 1, and the slip amount of the material sheet 200 is not easy to control and wrinkles and other defects are prone to occur. Therefore, in combination with Figure 1 and Figure 3 As shown, the lower die 2 is provided with a slip control mechanism 3, the length extension direction of the slip control mechanism 3 is perpendicular to the length extension direction of the lower die 2, and the slip control mechanism 3 is used to connect the material sheet 200 to be stamped and deformed. When the upper die 1 stamps the material sheet 200, the slip amount of the material sheet 200 can be controlled due to the tensioning effect of the slip control mechanism 3, so as to avoid wrinkles of the material sheet 200 affecting the quality of the finished product. In addition, when the material sheet 200 is placed on the lower die 2, the material sheet 200 can be tensioned to a certain extent through the slip control mechanism 3, so as to avoid the material sheet 200 from slipping. The slip control mechanism 3 provides a certain tension for the slip of the material sheet 200.

[0042] Specifically, the slip control mechanism 3 includes a first fixed part 31, a second fixed part 32 and a tensile deformation part 33, both ends of the tensile deformation part 33 are connected with the first fixed part 31 and the second fixed part 32 respectively, and one of the first fixed part 31 and the second fixed part 32 is fixedly arranged on the lower die 2, and the other is fixedly arranged on the material sheet 200 to be stamped and deformed. The tensile deformation part 33 is stretched and deformed under the action of the upper die 1, which can ensure that the material sheet 200 is stamped and formed while controlling the slip amount.

[0043] Specifically, the tensile deformation part 33 is a spring.

[0044] In order to fix the tensile deformation part 33 and avoid interference of the tensile deformation part 33 when the upper die 1 is stamped, the lower die 2 is provided with two connecting grooves 22, the two connecting grooves 22 are oppositely arranged on both sides of the groove 21, the groove 21 penetrates the lower die 2, and the first fixed part 31 or the second fixed part 32 is fixedly arranged in the connecting groove 22, and part of the tensile deformation part 33 is located in the connecting groove 22, thereby improving the stamping effect of the upper die 1.

[0045] A circular hole is opened at a designated position of the sheet 200, one of the first fixing part 31 and the second fixing part 32 is placed in the circular hole of the sheet 200, and the spring exerts a sliding resistance on the sheet 200 through the other one of the first fixing part 31 and the second fixing part 32. For example, the first fixing part 31 and the second fixing part 32 are both connecting plates of the sheet 200.

[0046] Specifically, the forming protrusion 11 has a fifth curved wall 111, a sixth curved wall 112, a seventh curved wall 113 and an eighth curved wall 114, which correspond to the first curved wall 211, the second curved wall 212, the third curved wall 213 and the fourth curved wall 214, so that the obtained curved frame 100 is the required curved frame 100, and the wall thicknesses of the curved frame 100 at different positions are uniform.

[0047] In some embodiments, with continued reference to Figure 1 and Figure 2 , the forming protrusion 11 is provided with a thermocouple hole 12 into which a thermocouple can be inserted, and in addition, the lower mold 2 is provided with a thermocouple hole 12 into which a thermocouple can be inserted. The thermocouple hole 12 is arranged at a position close to the sheet 200 on the upper mold 1 and the lower mold 2, a temperature-resistant thermocouple probe is inserted into the thermocouple hole 12, and during hot-press forming, the mold temperature can be monitored using the thermocouple to form a temperature signal feedback, facilitating process control and monitoring of temperature heating, temperature keeping and temperature cooling.

[0048] As shown in Figure 4 , the top of the lower mold 2 is provided with a sheet positioning mechanism 4 for positioning the sheet 200, and the sheet positioning mechanism 4 has a first positioning block 41 and a second positioning block 42, which are perpendicular and fixedly connected. The sheet positioning mechanism 4 determines the placement position of the sheet 200, and the sheet positioning mechanism 4 serves as a reference for placing the sheet 200, achieving rapid and accurate positioning of the sheet 200.

[0049] The top surface of the first positioning block 41 is provided with a plurality of first position adjusting holes 411, the side wall of the first positioning block 41 connected with the second positioning block 42 is provided with a plurality of second position adjusting holes 412, the first positioning block 41 is fixedly connected with the lower mold 2 by a bolt penetrating through any first position adjusting hole 411, the second positioning block 42 is provided with a through hole 421, and the second positioning block 42 is fixedly connected with the first positioning block 41 by a bolt penetrating through the through hole 421 and any second position adjusting hole 412. The relative positions of the first positioning block 41 and the second positioning block 42 can be adjusted to meet the positioning requirements of the material sheet 200 of different sizes. The first position adjusting hole 411 is used for connecting the first positioning block 41 with the lower mold 2, the second position adjusting hole 412 is provided as needed, the first positioning block 41 and the lower mold 2 are connected by a bolt, the second positioning block 42 and the first positioning block 41 are connected by a bolt, and the first positioning block 41 and the second positioning block 42 are vertically connected to realize the installation of the right-angle positioning mechanism.

[0050] The top surface of the lower mold 2 extends in the direction of the upper mold 1 and is provided with a material sheet placing protrusion 5, the material sheet placing protrusion 5 is used for bearing the material sheet 200, and the material sheet placing protrusion 5 is located on both sides of the groove 21. The material sheet placing protrusion 5 has a supporting effect on the material sheet 200. The highest point of the spring is lower than the material sheet 200 placing surface.

[0051] Continuing to refer to Figure 1 , the top surface of the lower mold 2 is further provided with a pad 6, and the pad 6 is arranged on the side of the material sheet placing protrusion 5 away from the groove 21. The installation surface of the pad 6 is lower than the material sheet 200 placing surface, and considering the accurate control of the thickness of the part, the pad 6 is arranged on both sides of the groove 21 of the lower mold 2, and the number of the pad 6 is adjusted as needed. The thickness of the pad 6 is selected according to the depth a of the installation surface of the pad 6 and the theoretical thickness L of the material sheet 200 after solidification, and the thickness of the pad 6 is preferably a+L. During hot mold pressing, the gap L after the upper mold 1 and the lower mold 2 are closed controls the thickness of the part, prevents the gap from being too large after the molds are closed, and prevents the pressure from being unable to be accurately applied; and prevents the resin from being squeezed to both sides when the gap is too small. The material sheet placing protrusion 5 is integrally formed with the lower mold 2.

[0052] The pad 6 can control the amount of downward pressure of the upper mold 1, stabilize the gap between the upper mold 1 and the lower mold 2, and realize the control of the thickness of the part. The pad 6 is designed to be detachable, and pads 6 of various heights can meet the hot mold pressing requirements of parts of various thicknesses.

[0053] In some embodiments, as Figure 1 and Figure 2As shown, the upper die 1 and the lower die 2 are both provided with guide holes 13, the guide holes 13 located on the upper die 1 and the guide holes 13 located on the lower die 2 are one-to-one correspondingly arranged, and the guide pillar 7 is arranged in the guide holes 13 of the upper die 1 and the guide holes 13 of the lower die 2 to provide guidance for the upper die 1. The molding surface cooperation precision of the upper die 1 and the lower die 2 affects the hot die pressing effect. Therefore, the guide sleeve guide pillar 7 structure is designed at the four corners of the hot die pressing molding device, the guide sleeve is embedded in the guide hole 13 of the lower die 2, and the guide hole 13 of the upper die 1 penetrates into the guide pillar 7, and the guide pillar 7 extends into the guide sleeve. Further, the guide pillar 7 can assist the accurate and rapid positioning of the upper die 1 and the lower die 2. At the same time, the guide pillar 7 fixes the relative position of the upper die 1 and the lower die 2, which can avoid the position deviation of the upper die 1 during the hot pressing process, and ensure the molding quality of the curved frame 100.

[0054] It should be noted that the molding surface of the lower die 2 is a female die, and the molding surface of the upper die 1 is a male die. The high-precision cooperation of the molding surfaces of the upper die 1 and the lower die 2 can meet the requirements of part web, edge strip, R-angle pressure application and thickness control, which is the key to preparing the curved frame 100 part. The two sides of the curved frame 100 part are respectively attached to the upper die 1 and the lower die 2, so as to realize the accurate bending of the sheet 200.

[0055] The preparation of the thermoplastic composite Z-shaped curved frame 100 is as follows:

[0056] (1) According to the part numerical model of the Z-shaped curved frame 100, the size of the flat sheet 200 required for molding is obtained, and the size of the preformed sheet 200 is estimated according to the process allowance required for molding;

[0057] (2) According to the part layer information and the theoretical thickness of the composite material, the thickness of the sheet positioning mechanism 4 and the thickness of the pad 6 are selected;

[0058] (3) If the thermoplastic composite preformed sheet 200 is prepared by hand laying, a cutting machine is needed to cut the thermoplastic sheet 200, and then the sheet 200 is laid according to the layering sequence, and a welding device is used for spot welding to prevent layer-to-layer slip of the sheet 200; it is recommended to use automatic fiber laying to prepare the thermoplastic sheet 200, which has accurate fiber direction positioning and good layer adhesion. A cutting device is used to cut the preformed sheet 200 into a preformed body sheet 200 required for molding;

[0059] (4) An ultrasonic cutting device is used to dig a circular hole at a specified position of the preformed sheet 200 for placing the first fixing part 31;

[0060] (5) The pad 6 is installed on the lower die 2 and fixed by using fasteners. The pads 6 need to be installed on both sides of the lower die 2;

[0061] (6) According to the size of the sheet 200, the sheet positioning mechanism 4 is combined and installed on the lower die 2, and is fixed by using fasteners;

[0062] (7) Install the slip control mechanism 3 in the connecting groove 22, with one end of the spring connected to the threaded hole of the connecting groove 22 and the other end planned to be connected to the lower end of the upright column of the second fixed part 32;

[0063] (8) Use a cloth to clean the surface impurities and dust of the lower mold 2 and the upper mold 1;

[0064] (9) Apply high-temperature release agent to the area where the lower mold 2, the upper mold 1, and the material sheet 200 may come into contact, facilitating the demolding of the hot-molded parts;

[0065] (10) Place the pre-formed material sheet 200 on the top surface of the material sheet placement protrusion 5 of the lower mold 2, with the right-angle edges of the pre-formed material sheet 200 aligned with the material sheet positioning mechanism 4 to achieve positioning of the material sheet 200;

[0066] (11) Place the first fixed part 31 at the circular hole of the material sheet 200, with the first fixed part 31 connected to the upright column and the free end of the spring connected to the upright column;

[0067] (12) Hoist the upper mold 1 above the lower mold 2, complete the positioning of the upper mold 1 and the lower mold 2 through the cooperation of the four guide columns 7 and the guide sleeves;

[0068] (13) Determine that the hot press is in normal state, and move the entire mold to the specified position on the hot press table;

[0069] (14) Place the thermocouple in the mold thermocouple hole 12, with the other end connected to the temperature data acquisition system, to feed the measured mold temperature back to the temperature control system and adjust the heating power as needed;

[0070] (15) According to the process characteristics of thermoplastic composites, develop temperature, pressure curing parameters, and develop hot-molding process parameters such as heating rate, holding time, cooling rate, pressure increasing rate, and pressure decreasing rate;

[0071] (16) Use the hot press to heat the lower mold 2 and the material sheet 200, and do not apply pressure to the upper mold 1;

[0072] (17) When the internal temperature of the mold reaches the required temperature for resin softening, the hot press starts to slowly apply pressure through the upper mold 1;

[0073] (18) Under the action of the molding protrusion 11 of the upper mold 1, the material sheet 200 softens and begins to bend along with the groove 21 of the lower mold 2;

[0074] (19) When the mold temperature rises to the required curing temperature, hold the pressure for a certain time according to the molding process curve;

[0075] (20) Maintain the pressure application and cool at a certain cooling rate (including stopping heating and natural cooling);

[0076] (21) To be cooled to the resin softening temperature point below, start pressure relief;

[0077] (22) When the mold temperature drops below 60 DEG C, the mold is removed from the hot press as a whole;

[0078] (23) When the mold temperature drops to room temperature, the upper mold 1 is removed, and the Z-shaped curved frame 100 is demolded;

[0079] (24) When demolding, attention should be paid to part protection to prevent forced demolding from causing fiber splitting on the surface of the part, etc.;

[0080] (25) Use the part line tool to draw cutting lines and cutting references on the surface of the Z-shaped curved frame 100;

[0081] (26) Manually cut or use a numerical control machine tool to edge process the Z-shaped curved frame 100 to obtain the Z-shaped curved frame 100 part required by the numerical mold;

[0082] (27) Wrap the part as needed for protection.

[0083] The thermoplastic composite curved frame 100 mold pressing mold and the PEEK thermoplastic composite material have been used to complete the preparation of a 1.5m curved frame 100 part, and the tooling and method have been preliminarily verified.

[0084] In addition, the above are only preferred embodiments of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A hot die forming apparatus for manufacturing a Z-shaped curved frame (100), characterized by, The utility model relates to a stamping die for the production of a plastic container, comprising: an upper die (1) having a downwardly projecting protrusion (11); a lower die (2) having a recess (21) adapted to the projecting protrusion (11), the recess (21) having a first curved wall (211), a second curved wall (212), a third curved wall (213) and a fourth curved wall (214) connected in sequence, the second curved wall (212) being arranged at an angle with the first curved wall (211) and the third curved wall (213), the third curved wall (213) being arranged at an angle with the second curved wall (212) and the fourth curved wall (214), the cross-section line segment of the first curved wall (211), the cross-section line segment of the second curved wall (212), the cross-section line segment of the third curved wall (213) and the cross-section line segment of the fourth curved wall (214) being arranged at an angle with the bottom surface of the lower die (2).

2. The hot press forming apparatus according to claim 1, wherein The cross-section line segment of the first curved wall (211), the cross-section line segment of the second curved wall (212), the cross-section line segment of the third curved wall (213) and the cross-section line segment of the fourth curved wall (214) are arranged at an acute angle with the bottom surface of the lower die (2).

3. The hot press forming apparatus according to claim 1, wherein The lower die (2) is provided with a slip control mechanism (3), the length extension direction of the slip control mechanism (3) being perpendicular to the length extension direction of the lower die (2), the slip control mechanism (3) being used for connecting a piece (200) to be stamped and deformed.

4. The hot press forming apparatus according to claim 3, wherein The slip control mechanism (3) comprises a first fixed part (31), a second fixed part (32) and a tensile deformation part (33), the two ends of the tensile deformation part (33) being connected with the first fixed part (31) and the second fixed part (32) respectively, one of the first fixed part (31) and the second fixed part (32) being fixedly arranged on the lower die (2), and the other being fixedly arranged on the piece (200) to be stamped and deformed.

5. The hot press forming apparatus according to claim 4, wherein The tensile deformation part (33) is a spring; or The lower die (2) is provided with two connecting grooves (22), the two connecting grooves (22) being oppositely arranged on the two sides of the recess (21), and the first fixed part (31) or the second fixed part (32) being fixedly arranged in the connecting groove (22).

6. The hot press forming apparatus according to claim 5, wherein The projecting protrusion (11) and the lower die (2) are both provided with a thermocouple hole (12) capable of inserting a thermocouple.

7. The hot press forming apparatus according to claim 1, wherein The top of the lower die (2) is provided with a piece positioning mechanism (4) for positioning a piece (200), the piece positioning mechanism (4) having a first positioning block (41) and a second positioning block (42), the first positioning block (41) being vertically and fixedly connected with the second positioning block (42).

8. The hot press forming apparatus according to claim 7, wherein The top surface of the first positioning block (41) is provided with a plurality of first position adjusting holes (411), the side wall of the first positioning block (41) connected with the second positioning block (42) is provided with a plurality of second position adjusting holes (412), the first positioning block (41) is fixedly connected with the lower mold (2) through a bolt penetrating through any first position adjusting hole (411), and the second positioning block (42) is fixedly connected with the first positioning block (41) through a bolt penetrating through any second position adjusting hole (412).

9. The hot press forming apparatus according to any one of claims 1 to 8, characterized by The top surface of the lower mold (2) extends in the direction of the upper mold (1) and is provided with a material sheet placing protrusion (5) for bearing a material sheet (200), and the material sheet placing protrusion (5) is located on both sides of the groove (21).

10. The hot press forming apparatus according to claim 9, wherein The top surface of the lower mold (2) is further provided with a cushion block (6) arranged on the side of the material sheet placing protrusion (5) away from the groove (21). Alternatively, the upper mold (1) and the lower mold (2) are both provided with guide holes (13), the guide holes (13) located on the upper mold (1) and the guide holes (13) located on the lower mold (2) are one-to-one correspondingly arranged, and a guide column (7) is arranged in the guide holes (13) to provide guidance for the upper mold (1).

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