A reshaping and repair device based on contouring mold loading to increase the rotational torque of automotive hinges.

Abstract

This invention provides a reshaping and repair device for automotive hinges based on a contouring mold to increase the rotational torque, belonging to the field of hinge reshaping technology. It includes a base with a lower mold, a lower pressure seat with an upper mold, and a receiving seat. The receiving seat has a limiting reference and a positioning medium, and the base has a fixed positioning reference. In this reshaping and repair device based on a contouring mold to increase the rotational torque of automotive hinges, the positioning medium and the limiting reference form a flexible clamping area, facilitating the placement and removal of the hinge. Combined with the cooperation of the positioning reference and the abutment positioning area, the flexible clamping area is transformed into a rigid clamping area. Furthermore, the two positioning media form a reference point to ensure the hinge's horizontality, ensuring that the hinge is accurately and stably placed on the lower mold before reshaping. Simultaneously, based on the mechanical structure and component detection circuit of this invention, reshaping failures or workpiece scrap caused by hinge placement deviations are effectively avoided, ensuring a high success rate for one-time reshaping.

Description

Technical Field

[0001] This invention relates to the field of hinge reshaping technology, specifically to a reshaping and repair device for increasing the rotational torque of automotive hinges based on a contouring mold loading method. Background Technology

[0002] As a crucial connection mechanism between the car body and moving parts such as doors, hood, and trunk lid, the performance of automotive hinges directly affects the overall vehicle's safety, closing quality, and user experience. Among these, the hinge's torque (the resistance torque during opening and closing) is one of the core indicators for evaluating hinge performance. OEMs typically set specific ranges for this, for example, the torque of door hinges is generally required to be controlled between 0.5 Nm and 2.5 Nm. Insufficient torque can lead to incomplete door closure, abnormal noises, or wobbling, while excessive torque affects operational smoothness. Therefore, the stability and compliance of torque are crucial to the overall vehicle assembly quality.

[0003] The rotational torque of a hinge primarily originates from the frictional resistance between the bushing and the pin mating surfaces. Given fixed materials and surface treatment processes, its magnitude is mainly affected by the matching accuracy of three key dimensions: the bushing fixing hole diameter, the bushing wall thickness, and the pin outer diameter. Although in actual production, all the aforementioned parts are manufactured according to tolerance requirements (e.g., hole diameter tolerance ±0.02mm, bushing thickness tolerance ±0.02mm, pin outer diameter tolerance ±0.02mm), due to the cumulative tolerance effect of the dimensional chain, the clearance between the bushing inner hole and the pin outer circle can easily become too large, resulting in a rotational torque below the lower limit of the track and creating defective products. This problem has a high probability of occurring in mass production, often causing the hinge to be scrapped directly, significantly increasing manufacturing costs and restricting the company's production efficiency and economic benefits.

[0004] To reduce scrap rates, existing technologies have attempted to reshape and repair defective hinges with insufficient torque. This typically involves pressing an upper and lower die together to apply a compressive forming force to the area of ​​the hinge where the pin is mounted. This physically fine-tunes the fit between the bushing and the pin, restoring the rotational torque to within the acceptable range. Furthermore, to prevent the forming force from being transmitted to non-forming areas and causing unintended deformation, some forming dies incorporate a rigid limiting structure fixed in the lower die, such as... Figure 1 As shown, the lower mold and the rigid limiting structure are integrated into one unit, used to support and limit the hinge. However, this type of fixed limiting structure is very inconvenient for the removal and placement of the hinge, and can easily cause damage to the hinge or lower mold during the assembly and disassembly process, affecting the efficiency of the shaping process and the stability of the shaping effect.

[0005] To address the aforementioned issues, some technologies have introduced movable or retractable limiting structures. However, existing movable or retractable limiting structures are either too simple to ensure hinge placement accuracy or too complex to reliably complete batch hinge reshaping. Therefore, there is an urgent need for a reshaping and repair device that combines convenient pick-and-place functionality with high-precision and high-reliability batch reshaping capabilities. Summary of the Invention

[0006] This invention provides a reshaping and repair device for automobile hinges based on a contouring mold loading method to increase the rotational torque. The device includes a base with a lower mold, a lower pressure seat with an upper mold, and a receiving seat. The upper and lower molds are positioned vertically opposite each other. The receiving seat supports the hinge and is vertically movable. The receiving seat has a limiting reference and a positioning medium. The limiting reference is fixed to the receiving seat and positioned with the lower mold as a reference, used to limit the hinge in the lateral direction, ensuring that the part of the hinge to be reshaped is vertically aligned with the lower mold. The positioning medium is elastically slidable on the receiving seat in the lateral direction and is positioned opposite the limiting reference. Together, they form a flexible clamping area for clamping the hinge. The number of positioning media is specified. At least two are distributed horizontally along the longitudinal direction. Each positioning medium is provided with an abutment positioning area. A positioning reference is fixedly set on the base. The positioning reference corresponds one-to-one with the abutment positioning area. The positioning reference is fixedly set with the lower mold as the reference. It is used to abut and cooperate with the corresponding abutment positioning area to position the positioning medium, so that the flexible clamping area is transformed into a rigid clamping area and the clamped hinge is in a horizontal state in the longitudinal direction. The positioning reference and the abutment positioning area can cooperate to automatically calibrate the position of the hinge in the transverse direction during the lowering of the clamped hinge, so that the hinge is accurately placed on the lower mold. The starting condition for the lower pressure seat to move down is that all abutment positioning areas are in contact with the corresponding positioning reference.

[0007] In one possible implementation, the receiving seat is further provided with an elastic downward pressure head, which provides elastic downward pressure to the hinge, causing the hinge to abut against the receiving seat.

[0008] In one possible implementation, the limiting reference has a longitudinal limiting area, and the hinge moves longitudinally to insert between the positioning medium and the limiting reference and abuts against the longitudinal limiting area.

[0009] In one possible implementation, the abutment positioning area includes an inclined portion and a vertical portion arranged sequentially from bottom to top and continuously, as well as a wedge-shaped contact portion arranged opposite to the vertical portion. The positioning reference cooperates with the inclined portion to correct the position of the positioning medium, and the abutment contact with the wedge-shaped contact portion is the initiation condition for the lower pressure seat to move downward.

[0010] In one possible implementation, the receiving seat is vertically slidably mounted on the base, and a guide member and a flexible control structure are provided between the two. The guide member is at least two in number and is fixedly connected to the bottom of the receiving seat and slidably connected to the base, so that the receiving seat is vertically slidably mounted relative to the base. The flexible control structure includes a moving member with a fixed travel and a connecting member that is slidably connected to the moving member for limiting. An elastic member is provided between the connecting member and the moving member. The connecting member is fixedly connected to the receiving seat. When the moving member moves downward, the connecting member moves downward through the elastic member. When the moving member moves upward, the connecting member moves upward through the limiting of the connecting member.

[0011] In one possible implementation, the base is provided with a vertical positioning head, and the initiation condition for the lower pressure seat to move downward also includes the hinge abutting against the vertical positioning head.

[0012] In one possible implementation, the base is provided with a reinforcing support structure that engages with a wedge-shaped limiting reference. When the receiving seat moves down, causing the part of the hinge to be shaped to fall onto the lower mold, the limiting reference and the reinforcing support structure fit together.

[0013] In one possible implementation, the contact surface between the positioning medium and the hinge has an arc-shaped structure.

[0014] The above-mentioned one or more technical solutions in the embodiments of the present invention have the following technical effects: According to the embodiment of the present invention, the reshaping and repair device for increasing the rotational torque of automobile hinges based on the loading of the mold has a flexible clamping area formed by the positioning medium and the limiting reference, which facilitates the placement and removal of the hinge. Combined with the cooperation of the positioning reference and the abutment positioning area, the flexible clamping area is transformed into a rigid clamping area. The two positioning media form a reference point to ensure the horizontality of the hinge and can automatically correct the position of the hinge during the placement process, ensuring that the hinge is accurately and stably placed on the lower mold before reshaping. At the same time, based on the mechanical structure of the present invention, a detection circuit is constructed. The detection circuit is only activated when the hinge is completely and accurately placed, and the reshaping work is performed. This fully avoids the situation of reshaping failure or workpiece scrap due to hinge placement deviation, ensuring the success rate of reshaping in one go. The whole device is convenient for the placement and removal of hinges and has high precision and high reliability in batch reshaping. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the upper mold, lower mold, and fixed limiting structure in an existing automotive hinge shaping device.

[0016] Figure 2 This is a schematic diagram of the overall structure of the reshaping and repair device for increasing the rotational torque of automotive hinges based on the loading of a contouring mold, provided in an embodiment of the present invention.

[0017] Figure 3This is a schematic diagram of the upper and lower molds of the reshaping and repair device for increasing the rotational torque of automotive hinges based on the loading of a contour mold, provided in an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the first partial structure of the reshaping and repair device for increasing the rotational torque of automobile hinges based on the loading of a contouring mold, provided in an embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the second partial structure of the reshaping and repair device for increasing the rotational torque of automobile hinges based on the loading of a contouring mold, provided in an embodiment of the present invention.

[0020] Figure 6 This is a schematic diagram of the third partial structure of the reshaping and repair device for increasing the rotational torque of automotive hinges based on the loading of a contouring mold, provided in an embodiment of the present invention.

[0021] Figure 7 This is a top-view structural diagram of the positioning medium and limiting reference of the reshaping and repair device based on the contouring mold loading to increase the rotational torque of the automobile hinge, provided in an embodiment of the present invention.

[0022] In the diagram: 1. Lower mold; 2. Base; 3. Upper mold; 4. Lower pressure seat; 5. Positioning medium; 6. Limiting reference; 7. Receiving seat; 8. Abutting positioning area; 81. Inclined part; 82. Vertical part; 83. Wedge-shaped contact part; 9. Positioning reference; 10. Elastic lower pressure head; 11. Longitudinal limiting area; 12. Guide component; 13. Flexible control structure; 131. Moving component; 132. Connecting component; 133. Elastic component; 14. Vertical positioning head; 15. Reinforced support structure; 16. Guide column; 17. Elastic structure; 18. Mounting arm one; 19. Spring component; 20. Mounting bracket; 21. Mounting arm two; 100. Hinge; 101. Pin. Detailed Implementation

[0023] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4A reshaping and repair device for increasing the rotational torque of automotive hinges based on contouring mold loading includes a base 2 on which a lower mold 1 is detachably and fixedly mounted on the top surface, and a lower pressure seat 4 on which an upper mold 3 is detachably and fixedly mounted on the bottom surface. The upper mold 3 and the lower mold 1 are arranged vertically opposite each other. The base 2 is fixedly mounted on a workbench (not shown in the figure). Four guide pillars 16 are fixedly mounted on the top surface of the base 2. Each guide pillar 16 passes upward through the lower pressure seat 4. An elastic structure 17 (e.g., a spring) is sleeved on the guide pillars 16. The elastic structure 17 is located between the lower pressure seat 4 and the base 2. During the reshaping process, the part of the hinge 100 to be reshaped, with the pin 101 mounted on it, is located on the lower mold 1. The lower pressure seat 4 is controlled by hydraulic drive (not shown in the figure) to move downward along the guide pillars 16, so that the upper mold 3 and the lower mold 1 press and shape the part of the hinge 100 to be reshaped. Figure 3 As shown, both the upper mold 3 and the lower mold 1 are modeled based on the external surface structure of the hinge 100 to be shaped. The upper mold 3 and the lower mold 1 press the hinge 100 to be shaped to complete the shaping and correction process, so as to repair the defective hinge 100 with insufficient torque.

[0025] See Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 To facilitate the placement and removal of the hinge 100, a receiving seat 7 with a positioning medium 5 and a limiting reference 6 is provided. The receiving seat 7 is located on the right side of the lower mold 1 and is vertically slidably mounted on the base 2. The limiting reference 6 is set with the lower mold 1 as a reference and is used to limit the hinge 100 in the lateral (left-right direction). The limiting reference 6 is fixedly set on the receiving seat 7 and is an integral structure with the receiving seat 7. Figure 5 As shown, when the right side of hinge 100 abuts against the limiting reference 6, the part of hinge 100 to be shaped, mounting pin 101, is positioned directly above the lower mold 1. At this point, simply moving hinge 100 vertically downwards will allow it to accurately land on the lower mold 1. Positioning medium 5 is located to the left of the limiting reference 6 and is elastically slidable on the limiting reference 6 in the left-right direction. Together with the limiting reference 6, they form a flexible clamping area. During the loading of hinge 100, it is only necessary to insert hinge 100 between the flexible clamping areas from front to back and allow it to land on the receiving seat 7. Similarly, moving hinge 100 from back to front will unload hinge 100, significantly improving the convenience of loading and unloading hinge 100. Combined with... Figure 6 and Figure 7As shown, an L-shaped mounting arm 18 is provided on the limiting reference 6. The positioning medium 5 is slidably mounted on the mounting arm 18, and a spring 19 is connected between the positioning medium 5 and the mounting arm 18. The spring 19 applies an elastic force to the positioning medium 5, so that it and the limiting reference 6 together form a flexible clamping area. The hinge 100 can be adaptively clamped by simply inserting it into the flexible clamping area.

[0026] See Figure 4 , Figure 5 , Figure 6 and Figure 7 To ensure the positional accuracy of hinge 100 in the left-right direction and its horizontality in the front-back direction, and to ensure that the part of hinge 100 to be shaped is accurately and stably placed on the lower mold 1, two positioning media 5 are provided, and each positioning media 5 is provided with an abutment positioning area 8 (e.g., Figure 5 As shown), two positioning media 5 are horizontally distributed front and back. A positioning reference 9 is fixedly installed on the base 2. The positioning reference 9 corresponds one-to-one with the abutting positioning area 8. The positioning reference 9 is fixedly set with the lower mold 1 as the reference, providing precise positioning in the left and right directions. By abutting and limiting with the corresponding abutting positioning area 8, the positioning media 5 is positioned, so that the positioning media 5 changes from a flexible clamping state to a rigid limiting state. In this way, the hinge 100 is precisely and stably abutted against the limiting reference 6, ensuring the accuracy and stability of the position of the hinge 100 in the left and right directions. At the same time, two horizontally distributed reference points are formed in the front and back directions to ensure that the hinge 100 is in a horizontal state in the front and back directions. Finally, the area to be shaped of the hinge 100 falls precisely and stably on the lower mold 1.

[0027] See Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The condition for the lower pressure seat 4 to move downward is that all positioning references 9 are in contact with the corresponding abutment positioning areas 8. Specifically, the abutment positioning areas 8 include an inclined portion 81 and a vertical portion 82 arranged sequentially from bottom to top, and wedge-shaped contact portions 83 arranged to the left and right of the vertical portion 82 (e.g., ...). Figure 6 As shown). The positioning reference 9 is fixedly mounted on the base 2 via the mounting bracket 20 (as shown). Figure 4As shown), and with the lower mold 1 as the reference, the positioning reference 9 is set such that when the receiving seat 7 moves down so that the part of the hinge 100 to be shaped falls precisely on the lower mold 1, the positioning reference 9 just abuts against the vertical part 82 and the wedge-shaped contact part 83 of the corresponding abutment positioning area 8, so that the positioning medium 5 changes from a flexible clamping state to a rigid limiting state, ensuring the stability of the position of the hinge 100 and the horizontality in the front and rear directions. It should be noted that the mounting bracket 20 will not interfere with or affect the front and rear movement of the hinge 100 and the pressing and shaping work of the upper mold 3 and the lower mold 1.

[0028] The wedge-shaped contact portion 83 is equipped with a conductive contact (not shown in the figure), and the part of the positioning reference 9 that contacts the wedge-shaped contact portion 83 is provided with a conductive sheet (not shown in the figure). The conductive contacts on the two wedge-shaped contact portions 83 are connected by wires (not shown in the figure), and the wires are in a slack state. The conductive sheets on the two positioning references 9 are connected by wires, and the conductive sheets of the positioning references 9 are respectively connected to the control system by wires. The four (two conductive contacts and two conductive sheets) constitute a detection circuit.

[0029] When the area to be shaped by hinge 100 is precisely placed on lower mold 1, and the conductive contacts on wedge-shaped contact portion 83 are in stable contact with the conductive plates on the corresponding positioning reference 9, the detection circuit is activated. Upon detecting the circuit activation signal, the control system issues a command to allow downward pressure. This command activates the hydraulic drive system, driving the lower pressure seat 4 to move downwards. If any conductive contact on the wedge-shaped contact portion 83 fails to contact the conductive plate on the corresponding positioning reference 9, the detection circuit is disconnected. In this case, the control system maintains the current state, the lower pressure seat 4 does not move downwards, and an audible and visual alarm is triggered to alert technicians for intervention. This design effectively avoids problems such as shaping failure, hinge 100 failure, or substandard shaping results due to improper placement of hinge 100, thus ensuring a high success rate for each shaping operation.

[0030] When hinge 100 is not precisely abutting against the limiting reference 6, during the downward movement of the receiving seat 7, the inclined portion 81 will first contact the corresponding positioning reference 9 before the part of hinge 100 to be shaped falls onto the lower mold 1. Under the limitation of positioning reference 9, it will move to the right and press hinge 100, so that hinge 100 abuts against the limiting reference 6. Then, as the receiving seat 7 continues to move downward, the vertical portion 82 abuts against the positioning reference 9 and continues to guide the receiving seat 7 to move downward smoothly until the part of hinge 100 to be shaped accurately falls onto the lower mold 1. At this time, positioning reference 9 just abuts against the wedge-shaped contact portion 83 in the corresponding abutment positioning area 8.

[0031] This design, on the one hand, can automatically correct the position of the hinge 100 during the downward movement of the receiving seat 7, ensuring the positional accuracy of the hinge 100 in the left-right direction and the horizontality in the front-back direction, and preventing the hinge 100 from contacting the lower mold 1 when it is not precisely against the limiting reference 6, thus avoiding unexpected friction and affecting the accuracy of the lower mold 1 in continuous use. On the other hand, it can effectively prevent the positioning reference 9 from generating sliding friction between itself and the final wedge-shaped contact part 83, ensuring the stability of the contact state between the conductive contact and the conductive sheet in the detection circuit, that is, ensuring the reliability of the starting conditions of the lower pressure seat 4. Among them, the contact surface between the positioning medium 5 and the hinge 100 is an arc-shaped structure (e.g., Figure 7 As shown, this reduces the contact area with hinge 100 and lowers friction.

[0032] See Figure 5 A vertical positioning head 14 is provided on the base 2. The starting conditions for the downward movement of the lower pressure seat 4 also include the hinge 100 abutting against the vertical positioning head 14. The vertical positioning head 14 is a press-to-connect button, connected in series to the aforementioned detection circuit via a wire. When the corresponding shaping part of the hinge 100 falls on the lower mold 1, the vertical positioning head 14 makes contact and connects under the pressure of the hinge 100, making the detection circuit conductive. After the control system detects the circuit conduction signal, it issues a command to allow downward pressure. This command controls the hydraulic drive system to start, driving the lower pressure seat 4 to move downward. Conversely, an alarm is triggered, and inspection and processing are awaited. This further ensures the success rate of the first shaping and effectively avoids the situation where shaping fails due to the hinge 100 not being placed vertically in place, requiring secondary shaping or the hinge 100 being directly scrapped.

[0033] See Figure 2 and Figure 7 To further improve the ease of placement and positional accuracy of hinge 100, a longitudinal limiting area 11 is provided on the limiting reference 6, such as... Figure 7 As shown, the longitudinal limiting area 11 is located on the mounting arm 18 and is used to limit the hinge 100 from the rear. When the hinge 100 is inserted into the flexible clamping area from front to back, when the rear side of the hinge 100 abuts against the longitudinal limiting area 11, it indicates that the hinge 100 is inserted into place, which is very convenient and quick, and at the same time further ensures the positional accuracy of the hinge 100 in the front-back direction.

[0034] See Figure 4 and Figure 5 A guide member 12 and a flexible control structure 13 are provided between the receiving seat 7 and the base 2. Two guide members 12 are fixedly connected to the bottom of the receiving seat 7 and slidably connected to the base 2, enabling the receiving seat 7 to slide vertically relative to the base 2. The flexible control structure 13 includes a moving member 131 with a fixed travel distance and a connecting member 132 that is slidably connected to the moving member 131. An elastic member 133 is provided between the connecting member 132 and the moving member 131. Figure 4 As shown, the connector 132 is a shaft-shaped structure with a small diameter in the lower half and a large diameter in the upper half, and a fixed limiting end at the bottom. The movable part 131 is vertically slidably sleeved on the small diameter section of the connector 132. The elastic part 133 is a spring, sleeved on the small diameter section and located between the limiting end and the movable part 131.

[0035] When the moving part 131 moves downward, the elastic part 133 is compressed and generates elastic downward pressure, which is transmitted to the receiving seat 7 through the connecting part 132, driving the receiving seat 7 to move downward stably and ensuring that the part to be shaped of the hinge 100 falls accurately on the lower mold 1. This design can effectively absorb working errors or structural errors and avoid positioning instability caused by errors during rigid stroke.

[0036] After the hinge 100 has been shaped, the moving part 131 moves upward. By limiting the large-diameter section of the connecting part 132, the connecting part 132 moves upward as well, thereby providing a rigid upward thrust to the receiving seat 7 and ensuring its reliable reset. This design effectively overcomes the inhibiting force that may occur when the hinge 100 gets stuck between the lower mold 1 and the limiting reference 6 after shaping, ensuring that the receiving seat 7 rises smoothly. The lifting and lowering of the moving part 131 can be controlled by a cylinder.

[0037] See Figure 5 and Figure 7 To further ensure the accuracy of hinge 100 placement and the stability of the placement process, a flexible downward pressure head 10 is also provided on the receiving seat 7, such as... Figure 5 As shown, a mounting arm 21 is fixedly mounted on the receiving seat 7. The elastic pressing head 10 is a vertical sliding seat with a contact shaft rotatably mounted. The vertical sliding seat is vertically slidably mounted on the mounting arm 21 and is connected to the mounting arm 21 by a spring. The contact shaft contacts the hinge 100 placed on the receiving seat 7 and applies elastic downward pressure to the hinge 100, so that the hinge 100 is stably placed on the receiving seat 7. It should be noted that when the hinge 100 is inserted into the flexible clamping area from front to back, it is simultaneously inserted between the elastic pressing head 10 and the receiving seat 7. Under the action of gravity, the hinge 100 can normally be stably placed on the receiving seat 7. Therefore, the downward pressure of the elastic pressing head 10 does not need to be very large to ensure that the hinge 100 is stably placed on the receiving seat 7, while not affecting the normal placement and removal of the hinge 100.

[0038] See Figure 4 and Figure 5 The base 2 is provided with a reinforced support structure 15, which is wedge-shaped and fits with the limiting reference 6. When the receiving seat 7 moves down, so that the part of the hinge 100 to be shaped falls on the lower mold 1, the limiting reference 6 fits with the reinforced support structure 15, which improves the supporting and limiting strength of the limiting reference 6 and ensures the stability and reliability of the hinge 100 shaping process.

[0039] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; 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; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A reshaping and repair device for increasing the rotational torque of automotive hinges based on contouring mold loading, comprising a base with a lower mold and a lower pressure seat with an upper mold, wherein the upper and lower molds are arranged vertically opposite each other, characterized in that: Also include: The receiving seat is used for carrying the hinge and moving vertically; The limiting reference is fixed on the receiving seat and is set below the die, and is used for limiting the hinge in the transverse direction, so that the part to be shaped of the hinge is aligned with the die in the vertical direction; The positioning medium is elastically and transversely arranged on the receiving seat, and the positioning medium is arranged opposite to the limiting reference, and the two together form a flexible clamping area for clamping the hinge, and the number of the positioning medium is at least two and is distributed horizontally along the longitudinal direction, and each positioning medium is provided with an abutting positioning area; The positioning reference corresponds to the abutting positioning area one by one, and the positioning reference is fixed below the die, and is used for abutting and cooperating with the corresponding abutting positioning area to position the positioning medium, so that the flexible clamping area is changed into a rigid clamping area, and the clamped hinge is in a horizontal state in the longitudinal direction, and the positioning reference and the abutting positioning area can automatically calibrate the position of the hinge in the transverse direction during the process of lowering the clamped hinge, so that the hinge is accurately placed on the die; Wherein, the starting condition of the lower pressing seat moving downward is that all the abutting positioning areas are in abutting contact with the corresponding positioning reference.

2. The profiling repair device for loading a profiling die to increase the turning moment of an automotive hinge according to claim 1, characterized in that: The receiving seat is also provided with an elastic lower pressing head, which provides an elastic pressing force on the hinge, so that the hinge abuts on the receiving seat.

3. The profiling repair device for loading a contour die to increase the turning moment of an automotive hinge according to claim 1, characterized in that: The limiting reference is provided with a longitudinal limiting area, and the hinge is moved and inserted between the positioning medium and the limiting reference in the longitudinal direction and abuts on the longitudinal limiting area.

4. The profiling repair device for loading a contouring die to increase the rotational torque of an automotive hinge of claim 1, wherein: The abutting positioning area includes an inclined part and a vertical part arranged in sequence and continuously from bottom to top, and a wedge-shaped contact part arranged opposite to the vertical part, and the positioning reference cooperates with the inclined part to correct the position of the positioning medium, and the abutting contact with the wedge-shaped contact part is the starting condition of the lower pressing seat moving downward.

5. The profiling repair device for loading a profiling die to increase the moment of rotation of an automotive hinge of claim 1, wherein: The receiving seat is vertically and slidably installed on the base, and a guide and a flexible control structure are arranged between the two, the guide is at least two in number and is fixedly connected to the bottom of the receiving seat and is slidably connected with the base, so that the receiving seat is vertically and slidably arranged relative to the base; The flexible control structure includes a moving part with a fixed moving stroke and a connecting part in limiting sliding connection with the moving part, and an elastic part is arranged between the connecting part and the moving part, the connecting part is fixedly connected to the receiving seat, the moving part moves downward through the elastic part to make the connecting part move downward, and the moving part moves upward through the limiting of the connecting part to make the connecting part move upward.

6. The profiling repair device for loading a profiling die to increase the turning moment of an automotive hinge according to claim 1 or 4, characterized in that: The base is provided with a vertical positioning head, and the starting condition of the lower pressing seat moving downward also includes the abutting contact between the hinge and the vertical positioning head.

7. The profiling repair device for loading a contouring die to increase the rotational torque of an automotive hinge of claim 1, wherein: The base is provided with a reinforced support structure, which is wedge-shapedly matched with the limiting reference, and when the receiving seat moves downward, the part to be shaped of the hinge falls on the die, and the limiting reference is matched with the reinforced support structure.

8. The profiling repair device for loading a contouring die to increase the moment of rotation of an automotive hinge of claim 1, wherein: The contact surface between the positioning medium and the hinge is an arc structure.

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