Keel core mold molding tool

Abstract

The utility model relates to the technical field of aircraft longeron manufacturing technique discloses a kind of longeron core mould moulding tool. Wherein longeron core mould moulding tool includes base, moulding unit, drive unit and two L type longeron core mould body, moulding unit is set on base, moulding unit includes the first clamping piece and the second clamping piece that can be towards or opposite movement along left and right direction, the same end of first clamping piece and second clamping piece along front-back direction is respectively provided with one limit piece, drive unit is used to drive the first clamping piece and the second clamping piece towards or opposite movement, two L type longeron core mould body is respectively set on first clamping piece and second clamping piece, the same end of two L type longeron core mould body along front-back direction is set with positioning hole in corresponding position, setting limit piece and positioning hole can form synergistic effect in the accurate positioning of two L type longeron core mould body, reach the butt joint effect of high accuracy.

Description

Technical Field

[0001] This utility model relates to the field of aircraft stringer manufacturing technology, and in particular to a stringer core mold assembly tooling. Background Technology

[0002] Aircraft stringers are longitudinal load-bearing components in aircraft structures. Their manufacturing typically involves material selection, forming, connection, and quality inspection, while balancing structural strength, lightweighting, and assembly compatibility. Aircraft stringer manufacturing is widely used in the aerospace field. Taking a continuous fiber reinforced resin matrix composite T-stringer as an example, the manufacturing process involves first laying a liquid molding dry fabric onto an L-shaped stringer mandrel, then positioning and assembling the L-shaped rigid mandrels with material sheets on both sides, and finally closing the mold to form the T-stringer structure. In the manufacturing of prepreg autoclave stringers, the prepreg resin has a very high viscosity at room temperature, while the resin used in dry fabric liquid molding stringers typically has a lower viscosity at the injection temperature to quickly fill the cavity and impregnate the fibers. If the L-shaped stringer mandrels on both sides are not securely locked, it can easily cause the material sheets to sag or shift during transfer. Meanwhile, if the docking accuracy is insufficient during the manufacturing process of the T-shaped stringer, it will seriously affect the overall structural strength of the stringer, making it difficult for it to withstand various loads during flight, thereby reducing the safety and reliability of the aircraft. Insufficient docking accuracy will also affect the assembly coordination, making it impossible for the stringer to be accurately docked with other parts of the aircraft, increasing the assembly difficulty and cost.

[0003] Currently, there are some long stringer core mold closing fixtures. The long stringer core mold is set in a clamping mechanism, and the clamping mechanisms are brought close together to achieve mold closing. However, the existing long stringer core mold closing fixtures require manual alignment of the two long stringer core molds, which consumes a lot of manpower and time, resulting in low mold closing efficiency, increased production costs, and difficulty in guaranteeing the alignment accuracy of manual alignment, which is prone to deviation, thus affecting the mold closing quality of the long stringer core mold and reducing the product qualification rate.

[0004] Therefore, there is an urgent need for a long stringer core mold closing fixture that can solve the problem of poor alignment accuracy when closing L-shaped long stringer core molds, thereby improving mold closing efficiency and product qualification rate. Utility Model Content

[0005] The purpose of this utility model is to provide a long stringer core mold closing fixture, which can solve the problem of poor alignment accuracy of L-shaped long stringer core mold closing, and improve mold closing efficiency and product qualification rate.

[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0007] A long stringer core mold assembly fixture includes:

[0008] Base;

[0009] A mold clamping unit is disposed on the base. The mold clamping unit includes a first clamping member and a second clamping member that are spaced apart from each other. The first clamping member and the second clamping member can move towards each other or away from each other in the left-right direction. The first clamping member and the second clamping member extend in the front-back direction. A limiting member is respectively provided at the same end of the first clamping member and the second clamping member in the front-back direction. The first clamping member is slidably connected to the base.

[0010] A drive unit is disposed on the base and on one side of the mold clamping unit in the left-right direction. The drive unit is used to drive the first clamping member and the second clamping member to move towards or away from each other.

[0011] Two L-shaped long stringer core mold bodies are disposed between the first clamping member and the second clamping member. The two L-shaped long stringer core mold bodies are respectively disposed on the first clamping member and the second clamping member. The two L-shaped long stringer core mold bodies extend in the front-back direction. Positioning holes are provided at corresponding positions at the same end of the two L-shaped long stringer core mold bodies in the front-back direction.

[0012] As an optional solution for the long stringer core mold clamping fixture, one end of each of the two limiting members is connected to the first clamping member and the second clamping member respectively, and the other end is bent upward. The upwardly bent part is used to limit the L-shaped long stringer core mold body in the front-back direction, and the upwardly bent parts of the two limiting members are on the same plane.

[0013] As an optional solution for the long string core mold assembly tooling, the long string core mold assembly tooling also includes a positioning pin, and the two L-shaped long string core mold bodies can be assisted in alignment through the through-hole relationship between the positioning pin and the positioning hole.

[0014] As an optional solution for the long girder core mold assembly tooling, the long girder core mold assembly tooling also includes a connector. Both of the two L-shaped long girder core mold bodies are provided with corresponding connecting holes at their front and rear ends. The connector connects the two L-shaped long girder core mold bodies through the corresponding connecting holes.

[0015] As an optional solution for the clamping fixture of the long stringer core mold, the clamping unit also includes a sliding assembly, which includes:

[0016] A slide rail is mounted on the base and extends in the left-right direction;

[0017] The slider engages with the slide rail and is connected to the first clamping member. The slider is used to slide along the extension direction of the slide rail.

[0018] As an optional solution for the long stringer core mold clamping fixture, the drive unit includes:

[0019] A bracket, which is mounted on the base;

[0020] Power input components;

[0021] A transmission assembly, at least a portion of which is housed within and connected to the bracket, and a power input component is connected to the transmission assembly;

[0022] An output link is connected to the transmission assembly, which drives the output link to move in the left-right direction.

[0023] As an optional solution for the clamping fixture of the long stringer core mold, the transmission assembly includes:

[0024] A first link, which extends in the front-to-back direction, at least a portion of which passes through the bracket, and at least a portion of which is threaded;

[0025] The gear has a ring structure. The outer ring of the gear meshes with the thread on the first connecting rod. The inner ring wall of the gear is also provided with a thread. At least part of the output connecting rod is provided with a thread on the circumferential outer side, and the thread meshes with the thread on the inner ring wall of the gear.

[0026] As an optional solution for the long string core mold closing fixture, the power input component is a handwheel, which is connected to the transmission assembly to provide power for the movement of the transmission assembly.

[0027] As an optional solution for the long string core mold clamping fixture, the long string core mold clamping fixture also includes a pressure-bearing component, which is disposed on the first clamping component and corresponds to the output end of the drive unit.

[0028] As an optional solution for the long girder core mold assembly tooling, the base is rectangular, and each of the four circumferential vertices of the base is provided with a hanging component.

[0029] The beneficial effects of this utility model are as follows:

[0030] This utility model proposes a clamping fixture for a long stringer core mold. The clamping unit is mounted on a base and includes a first clamping member and a second clamping member spaced apart from each other. The first and second clamping members can move towards or away from each other in the left-right direction. A limiting member is provided at the same end of the first and second clamping members in the front-back direction. The first clamping member is slidably connected to the base. A driving unit is mounted on the base and is used to drive the first and second clamping members to move towards or away from each other. Two L-shaped long stringer core mold bodies are both disposed between the first and second clamping members, and the two L-shaped long stringer core mold bodies are respectively disposed on the first and second clamping members. Positioning holes are provided at corresponding positions on the same end of the body along the front-back direction. The setting of limiting components and positioning holes can work together to achieve precise positioning of the two L-shaped long stringer core mold bodies. The limiting components provide a rigid positioning reference along the front-back direction by contacting the end face of the core mold body, restricting the front-back displacement and rotational freedom around the positioning holes. The positioning holes cooperate with other components to achieve precise positioning of the two L-shaped long stringer core mold bodies, ensuring accurate mold closing position, improving mold closing accuracy and efficiency, and ensuring the forming quality of the long stringer core mold. Together, they ensure that even if there are manufacturing errors or uneven forces during the mold closing process, the two L-shaped long stringer core mold bodies can still achieve complete positioning in three-dimensional space, achieving a high-precision docking effect. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the first structure of the long girder core mold closing tooling provided in this embodiment of the utility model;

[0032] Figure 2 This is a schematic diagram of the second structure of the long girder core mold closing tooling provided in this embodiment of the utility model;

[0033] Figure 3 This is a schematic diagram of the third structure of the long girder core mold closing tooling provided in this embodiment of the utility model;

[0034] Figure 4 This is a schematic diagram of the fourth structure of the long stringer core mold closing tooling provided in this embodiment of the utility model;

[0035] Figure 5 This is a first structural schematic diagram of the connector provided in an embodiment of the present utility model;

[0036] Figure 6 This is a schematic diagram of the second structure of the connector provided in this embodiment of the utility model;

[0037] Figure 7 This is a schematic diagram of the fifth structure of the long girder core mold closing tooling provided in this embodiment of the utility model;

[0038] Figure 8This is a schematic diagram of the sixth structure of the long girder core mold closing tooling provided in this embodiment of the utility model;

[0039] Figure 9 This is a first structural schematic diagram of the driving unit provided in an embodiment of the present invention;

[0040] Figure 10 This is a schematic diagram of the second structure of the driving unit provided in this embodiment of the utility model;

[0041] Figure 11 This is a schematic diagram of the third structure of the driving unit provided in this embodiment of the utility model.

[0042] In the picture:

[0043] 1. Base;

[0044] 2. Mold clamping unit; 21. First clamping component; 22. Second clamping component; 23. Sliding assembly; 231. Slide rail; 232. Slider; 201. Limiting component;

[0045] 3. Drive unit; 31. Bracket; 32. Power input component; 33. Transmission assembly; 34. Output link;

[0046] 4. L-shaped long stringer core mold body; 41. Positioning holes;

[0047] 5. Positioning pin; 6. Connector; 61. First gripping part; 62. Connecting part; 63. Second gripping part; 7. Pressure bearing part; 8. Hanging part. Detailed Implementation

[0048] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0049] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0052] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0053] Continuous fiber reinforced resin matrix composites have found wide application in the aerospace field due to their excellent properties. A large number of composite T-string structures are used in the wings, tails, and control surfaces of large passenger aircraft. The manufacturing process of T-string structures mainly involves laying liquid molding dry fabric onto a rigid L-shaped stringer mandrel, then positioning and assembling the L-shaped stringer mandrels with material sheets on both sides, and finally completing the mold closing operation. During the manufacturing process of the T-stringer, misalignment may occur when the L-shaped stringer mandrels on both sides are closed, leading to ineffective positioning. Furthermore, the adhesive strength of the liquid molding dry fabric surface is relatively weak; if the L-shaped stringer mandrels on both sides are not securely locked, it can easily cause the material sheets to sag or shift during transfer. Additionally, there are problems such as inconvenience in the mold closing and transfer processes. Therefore, a long string core mold assembly tooling is needed to solve the above problems. However, conventional long string core mold assembly tooling requires manual alignment of the two long string core molds. The alignment accuracy of manual alignment is difficult to guarantee and deviations are prone to occur, which in turn affects the quality of long string core mold assembly and reduces the product qualification rate.

[0054] To solve the problem of poor alignment accuracy of L-shaped long stringer core mold, such as Figure 1As shown, this embodiment provides a long stringer core mold clamping fixture. In this embodiment, the long stringer core mold clamping fixture includes a base 1, a clamping unit 2, a driving unit 3, and two L-shaped long stringer core mold bodies 4. The clamping unit 2 is disposed on the base 1 and includes a first clamping member 21 and a second clamping member 22 arranged at intervals. The first clamping member 21 and the second clamping member 22 can move towards or away from each other in the left-right direction. The first clamping member 21 and the second clamping member 22 extend in the front-back direction. A limiting member 201 is respectively provided at the same end of the first clamping member 21 and the second clamping member 22 in the front-back direction. The first clamping member 21 is slidably connected to the base 1. The driving unit 3 is disposed on the base 1 and is disposed on one side of the clamping unit 2 in the left-right direction. The driving unit 3 is used to drive the first clamping member 21 and the second clamping member 22 to move towards or away from each other. The two L-shaped long stringer core mold bodies 4 are both disposed on the first clamping member 21 and the second clamping member 22. Between 2, two L-shaped long stringer core mold bodies 4 are respectively set on the first clamping member 21 and the second clamping member 22. The two L-shaped long stringer core mold bodies 4 extend in the front-back direction. Positioning holes 41 are provided at corresponding positions at the same end of the two L-shaped long stringer core mold bodies 4 in the front-back direction. The setting of the limiting member 201 and the positioning holes 41 can form a synergistic effect in the precise positioning of the two L-shaped long stringer core mold bodies 4. The limiting member 201 provides a rigid positioning reference in the front-back direction by contacting the end face of the core mold body, restricting the front-back displacement and the rotational degree of freedom around the positioning hole 41. The positioning hole 41 cooperates with other components to achieve precise positioning of the two L-shaped long stringer core mold bodies 4, ensuring accurate mold closing position, improving mold closing accuracy and efficiency, and ensuring the forming quality of the long stringer core mold. Together, they ensure that even if there are manufacturing errors or uneven forces during the mold closing process, the two L-shaped long stringer core mold bodies 4 can still achieve complete positioning in three-dimensional space and achieve a high-precision docking effect.

[0055] Preferably, such as Figure 1 , Figure 7 and Figure 8As shown, in this embodiment, one end of each of the two limiting members 201 is connected to the first clamping member 21 and the second clamping member 22, respectively, and the other end is bent upwards. The upwardly bent portion is used to limit the L-shaped stringer core mold body 4 in the front-back direction. The upwardly bent portions of the two limiting members 201 are on the same plane. The two limiting members 201 can not only accurately limit the L-shaped stringer core mold body 4 in the front-back direction, providing stable positioning constraints and effectively limiting its front-back displacement, but also further constrain the rotational degree of freedom of the L-shaped stringer core mold, ensuring that the relative positions of the two L-shaped stringer core mold bodies 4 in the front-back direction are accurate. Together with the positioning hole 41, complete positioning in three-dimensional space is achieved, thereby improving the reliability and stability of positioning during the mold closing process, greatly improving the mold closing accuracy and efficiency, and ensuring the forming quality of the stringer. In other embodiments, the structure of the limiting member 201 can be other forms, as long as it can help improve the high-precision alignment of the two L-shaped stringer core mold bodies 4.

[0056] Specifically, such as Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, the long stringer core mold closing fixture also includes a positioning pin 5. The two L-shaped long stringer core mold bodies 4 can be assisted in alignment through the through-hole relationship between the positioning hole 41 and the positioning pin 5. The through-hole cooperation between the positioning pin 5 and the positioning hole 41 of the L-shaped long stringer core mold body 4 enables quick and accurate assisted alignment of the two L-shaped long stringer core mold bodies 4 during mold closing, effectively compensating for positional deviations caused by manufacturing tolerances, assembly errors, and other factors. This further improves the positioning accuracy of the core mold closing, reduces the risk of misalignment and deviation during the mold closing process, and enables the two L-shaped long stringer core mold bodies 4 to achieve higher assembly consistency, thereby improving the overall forming quality and production efficiency of the long stringer. In other embodiments, the positioning pin 5 can also be replaced by a magnetic positioning component or an elastic positioning component, as long as it can assist in the alignment of the two L-shaped long stringer core mold bodies 4.

[0057] Optionally, in this embodiment, the head of the positioning pin 5 is tapered, which can automatically correct slight hole misalignment during core mold closing by utilizing the guiding effect of the inclined surface, achieving fast and accurate positioning. Even with certain manufacturing tolerances or initial alignment deviations, it can still be smoothly inserted into the positioning hole 41. Setting the head of the positioning pin 5 to be tapered also reduces damage caused by hard collisions between the positioning pin 5 and the hole wall, improving mold closing efficiency and compensating for manufacturing errors. In other embodiments, the shape of the head of the positioning pin 5 can be a stepped head or an elastic head, as long as it can reduce damage caused by hard collisions between the positioning pin 5 and the hole wall and improve mold closing efficiency.

[0058] Specifically, such as Figures 1-6As shown, in this embodiment, the long stringer core mold closing fixture also includes a connector 6. Each of the two L-shaped long stringer core mold bodies 4 has a corresponding connecting hole at both ends. The connector 6 connects the two L-shaped long stringer core mold bodies 4 through the corresponding connecting holes. By connecting the connector 6 to the corresponding connecting holes at both ends of the two L-shaped long stringer core mold bodies 4, the two L-shaped long stringer core mold bodies 4 can be stably spliced ​​together. The connector 6 and connecting holes not only enhance the overall stability of the core mold structure after mold closing, preventing displacement or loosening due to stress during subsequent use, but also ensure the long-term maintenance of mold closing accuracy, effectively avoiding molding errors caused by weak connections, and further improving the molding quality and reliability of the long stringer after mold closing.

[0059] Optionally, such as Figures 1-6 As shown, in this embodiment, the connector 6 includes a first gripping part 61, a connecting part 62, and a second gripping part 63. The first gripping part 61 is threaded to one end of the connecting part 62, and the second gripping part 63 is inserted into the other end of the connecting part 62. When connecting two L-shaped long girder core mold bodies 4, the first gripping part 61 is first connected to the connecting part 62, then the connecting part 62 is simultaneously inserted into the connecting hole, and then the second gripping part 63 is inserted into the connecting part 62 until the second gripping part 63 abuts against one of the two L-shaped long girder core mold bodies 4, thereby achieving mold closing of the two L-shaped long girder core mold bodies 4. The threaded connection can provide reliable fastening force, ensure connection strength, and prevent loosening. The insertion method simplifies the installation process, reduces the difficulty of operation, and improves the connection efficiency. The first gripping part 61 and the second gripping part 63 facilitate the operator's application of force and positioning, which not only makes the mold closing process easier and more accurate, but also adapts to the connection requirements under different working conditions, effectively improving the practicality and versatility of the long girder core mold closing tooling.

[0060] Specifically, such as Figures 1-8 As shown, in this embodiment, the mold closing unit 2 further includes a sliding component 23. The sliding component 23 is disposed on the base 1 and is connected to the first clamping member 21. The sliding component 23 is used to drive the first clamping member 21 and the second clamping member 22 to move closer and further apart, so as to realize the mutual approach and distance of the two L-shaped long stringer core mold bodies 4. The sliding component 23 can accurately control the mold closing distance and movement trajectory, reduce the error and labor intensity of manual operation, improve the stability and controllability of the mold closing process, and ensure that the two L-shaped long stringer core mold bodies 4 remain synchronized during the movement, thereby effectively improving the mold closing efficiency and accuracy, and providing a reliable guarantee for the high-quality molding of the long stringer core mold.

[0061] Optionally, such as Figures 1-8As shown, in this embodiment, the sliding component 23 includes a slide rail 231 and a slider 232. The slide rail 231 is mounted on the base 1 and extends in the left-right direction. The slider 232 cooperates with the slide rail 231 and is connected to the first clamping member 21. The slider 232 is used to slide along the extension direction of the slide rail 231, converting the power of the driving unit 3 into a smooth linear motion of the first clamping member 21, achieving precise opposite or opposite motion with the second clamping member 22. The high-precision cooperation between the slide rail 231 and the slider 232 can significantly reduce lateral offset and sway during the movement, providing a stable and reliable motion trajectory for the mold closing unit 2. At the same time, the low-friction design of the slider 232 and the slide rail 231 can reduce power loss, improve motion efficiency, and ensure the positional accuracy and repeatability of the two L-shaped long stringer core mold bodies 4 during the mold closing process, further improving the mold closing quality and production efficiency. In other embodiments, the sliding component 23 can also be a gear and rack structure or a hydraulic slide, as long as it can drive the first clamping member 21 to move.

[0062] Optionally, such as Figures 1-8 As shown, in this embodiment, there are two sliding components 23. The two sliding components 23 are parallel and spaced apart. The two sliding components 23 are symmetrically distributed at the bottom of the first clamping member 21 with the central plane of the front-back direction of the mold closing unit 2 as the axis of symmetry. The parallel and spaced symmetrical distribution at the bottom of the first clamping member 21 can realize the dynamic balance and stable guidance of the first clamping member 21 during the left-right movement process, and ensure that the two L-shaped long stringer core mold bodies 4 are subjected to uniform force in the front-back direction when the mold is closed, avoiding tilting and jamming caused by lateral force or torque.

[0063] Specifically, such as Figure 2 and Figures 9-11 As shown, in this embodiment, the drive unit 3 includes a bracket 31, a power input component 32, a transmission component 33, and an output link 34. The bracket 31 is mounted on the base 1. At least part of the transmission component 33 passes through the bracket 31 and is connected to the bracket 31. The power input component 32 is connected to the transmission component 33, and the output link 34 is connected to the transmission component 33. The transmission component 33 is used to drive the output link 34 to move in the left and right directions. The bracket 31 provides stable support for the transmission component 33. The cooperation between the power input component 32 and the transmission component 33 can realize the efficient transmission and conversion of power, enabling the output link 34 to move accurately in the left and right directions. This ensures the synchronization and stability of the first clamping component 21, improves the positional accuracy and docking effect of the two L-shaped long stringer core mold bodies 4 during the mold closing process, reduces the mold closing error caused by motion deviation, and enhances the reliability and durability of the entire tooling system, adapting to the needs of long-term, high-frequency mold closing operations.

[0064] Optionally, in this embodiment, the transmission assembly 33 includes a first connecting rod and a gear. The first connecting rod extends in the front-rear direction, and at least a portion of the first connecting rod passes through the bracket 31. At least a portion of the first connecting rod is threaded. The gear has a ring structure, with its outer ring meshing with the thread on the first connecting rod. The inner ring wall of the gear is also threaded. At least a portion of the output connecting rod 34 has threads on its circumferential outer side, which mesh with the threads on the inner ring wall of the gear. Through the double threaded engagement of the gear with the first connecting rod and the output connecting rod 34, the rotation of the power input component 32 is converted into linear movement of the output connecting rod 34 in the left-right direction, thereby driving the first clamping component 21 to complete the mold closing action. The double threaded engagement structure not only achieves efficient conversion of motion modes but also provides stable positioning and holding capabilities through the self-locking characteristics of the threads, ensuring the accuracy of the core mold position during the mold closing process. In other embodiments, the transmission assembly 33 can also be a hydraulic transmission structure or a chain drive, as long as it can convert other forms of power into a force that drives the output connecting rod 34 to move in the left-right direction.

[0065] Optionally, such as Figure 2 and Figures 9-11 As shown, in this embodiment, the power input component 32 is a handwheel, which is connected to the transmission component 33 and provides power for the movement of the transmission component 33. The transmission component 33 converts the rotational motion into the linear motion of the output connecting rod 34, thereby driving the first clamping member 21 to realize the mold closing operation of the L-shaped stringer core mold body 4. The manual operation mode provides the operator with direct tactile feedback, which is convenient for real-time perception of changes in mold closing resistance and fine adjustment of force. It is especially suitable for small-batch, high-precision trial production. The handwheel structure is simple and reliable, requiring no external power supply or complex control system, which significantly reduces equipment cost and maintenance difficulty. In the event of a sudden power outage or automation system failure, the handwheel can serve as a backup operation mode to ensure production continuity. In other embodiments, the power input component 32 can also be a servo motor or hydraulic motor, as long as it can drive the transmission component 33 to work.

[0066] Preferably, such as Figure 2 and Figures 9-11 As shown, in this embodiment, the long stringer core mold closing fixture also includes a pressure-bearing component 7, which is disposed on the first clamping component 21. The pressure-bearing component 7 corresponds to the output end (i.e., the output connecting rod 34) of the driving unit 3. The pressure-bearing component 7 is connected to the output connecting rod 34, which can effectively transmit the driving force of the driving unit 3 evenly to the first clamping component 21, avoiding deformation or displacement deviation of the first clamping component 21 due to uneven force, and ensuring that the first clamping component 21 and the second clamping component 22 move stably towards or away from each other during the mold closing process. The pressure-bearing component 7 can play a buffering and protective role, reduce the direct wear between the driving unit 3 and the first clamping component 21, extend the overall service life of the fixture, and further improve the accuracy and reliability of the two L-shaped long stringer core mold bodies 4 in mold closing.

[0067] Optionally, such as Figures 1-3 As shown, in this embodiment, the base 1 is rectangular, and each of the four vertices of the base 1 is equipped with a hanging member 8, which enables convenient hoisting and transportation of the long girder core mold assembly tooling. By connecting the hanging member 8 to the hoisting equipment, the tooling can be easily moved to the required work position. This not only reduces the labor intensity and safety risks of manual handling but also prevents damage to components due to uneven force during movement. Simultaneously, it improves the tooling's turnover efficiency on the production line, ensuring the continuity and efficiency of the production process, and making the tooling more flexible and convenient to use in different operating scenarios. In other embodiments, the base 1 can be circular or elliptical, etc., and there can be two, three, or five hanging members 8, etc., which will not be elaborated further.

[0068] For ease of understanding, combined with Figures 1-11 The working process of the long stringer core mold closing fixture is explained below. Specifically, when using the long stringer core mold closing fixture to close the L-shaped long stringer core mold body 4, the two L-shaped long stringer core mold bodies 4 are placed on the first clamping member 21 and the second clamping member 22 respectively. The two L-shaped long stringer core mold bodies 4 abut against the limiting member 201. The handwheel is turned to bring the first clamping member 21 and the second clamping member 22 closer together. When they are close to the preset position, the positioning pin 5 is inserted into the two positioning holes 41 at once. The handwheel is then turned to bring the first clamping member 21 and the second clamping member 22 closer together until the two L-shaped long stringer core mold bodies 4 are in complete contact. Then, two connecting members 6 are inserted into the connecting holes at the front and rear ends respectively to achieve mold closing.

[0069] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A longeron core mold molding tool characterized by, include: Base (1); A mold clamping unit (2) is disposed on the base (1). The mold clamping unit (2) includes a first clamping member (21) and a second clamping member (22) disposed at intervals. The first clamping member (21) and the second clamping member (22) can move towards each other or away from each other in the left-right direction. The first clamping member (21) and the second clamping member (22) extend in the front-back direction. A limiting member (201) is respectively provided at the same end of the first clamping member (21) and the second clamping member (22) in the front-back direction. The first clamping member (21) is slidably connected to the base (1). The driving unit (3) is disposed on the base (1) and disposed on one side of the mold clamping unit (2) along the left and right direction. The driving unit (3) is used to drive the first clamping member (21) and the second clamping member (22) to move towards each other or away from each other. Two L-shaped long girder core mold bodies (4) are provided between the first clamping member (21) and the second clamping member (22). The two L-shaped long girder core mold bodies (4) are respectively provided on the first clamping member (21) and the second clamping member (22). The two L-shaped long girder core mold bodies (4) extend in the front-back direction. Positioning holes (41) are provided at corresponding positions at the same end of the two L-shaped long girder core mold bodies (4) in the front-back direction.

2. The longeron core die tooling of claim 1, wherein, One end of each of the two limiting members (201) is connected to the first clamping member (21) and the second clamping member (22) respectively, and the other end is bent upward. The upward bent part is used to limit the L-shaped long stringer core mold body (4) in the front-back direction. The upward bent parts of the two limiting members (201) are on the same plane.

3. The longeron core die tooling of claim 1, wherein, The long stringer core mold assembly tooling also includes a positioning pin (5), and the two L-shaped long stringer core mold bodies (4) can be assisted in alignment through the through-hole relationship between the positioning hole (41) and the positioning pin (5).

4. The longeron core die molding tooling of claim 1, wherein, The long stringer core mold assembly tooling also includes a connector (6). The two L-shaped long stringer core mold bodies (4) are provided with corresponding connecting holes (42) at both ends. The connector (6) connects the two L-shaped long stringer core mold bodies (4) through the corresponding connecting holes (42).

5. The long chord core mold-die tooling of any one of claims 1-4, wherein, The mold clamping unit (2) further includes a sliding component (23), which includes: A slide rail (231) is disposed on the base (1) and extends in the left-right direction; The slider (232) cooperates with the slide rail (231), the slider (232) is connected to the first clamping member (21), and the slider (232) is used to slide along the extension direction of the slide rail (231).

6. The long chord core mold tooling of any one of claims 1-4, wherein, The driving unit (3) includes: A bracket (31) is disposed on the base (1); Power input component (32); A transmission assembly (33) is provided, at least part of which is inserted into and connected to the bracket (31), and a power input component (32) is connected to the transmission assembly (33). Output link (34) is connected to the transmission assembly (33), which is used to drive the output link (34) to move in the left and right direction.

7. The long string core die tooling of claim 6, wherein, The transmission assembly (33) includes: The first link extends in the front-rear direction, at least a portion of the first link passes through the bracket (31), and at least a portion of the first link is provided with threads; The gear is a ring structure. The outer ring of the gear meshes with the thread on the first connecting rod. The inner ring wall of the gear is also provided with a thread. At least part of the output connecting rod (34) is provided with a thread on the circumferential outer side. The thread meshes with the thread on the inner ring wall of the gear.

8. The long stringer core mold assembly fixture according to claim 7, characterized in that, The power input component (32) is a handwheel, which is connected to the transmission assembly (33) and provides power for the movement of the transmission assembly (33).

9. The long stringer core mold closing fixture according to any one of claims 1-4, characterized in that, The long stringer core mold clamping fixture also includes a pressure-bearing component (7), which is disposed on the first clamping component (21) and corresponds to the output end of the drive unit (3).

10. The longeron core die tooling of any one of claims 1-4, wherein, The base (1) is rectangular, and each of the four vertices of the base (1) is provided with a hanging member (8).

Images