A flanging forming device for processing an automobile heat shield

Abstract

The application relates to the technical field of automobile part processing equipment, and discloses a flanging forming device for automobile heat shield processing, which comprises a base and a stamping seat, the top outer wall of the base is fixedly connected with a lower die, a flanging groove is formed in the top middle section outer wall of the lower die, the bottom outer wall of the stamping seat is fixedly connected with an upper die, the upper die is matched with the flanging groove, the top outer wall of the lower die is provided with a positioning mechanism, and the positioning mechanism comprises two positioning blocks and multiple clamping blocks. In the utility model, the positioning mechanism on the top of the lower die realizes bidirectional positioning of the heat shield in the horizontal direction and the vertical direction, the two positioning blocks cooperate with the multiple clamping blocks, the transmission structure of the gear set and the rack is utilized, the heat shield can be clamped and fixed from multiple directions, the heat shield is prevented from deviating in the positioning groove due to uneven stress during the flanging process, and the problem of flanging position deviation is effectively solved.

Description

Technical Field

[0001] This application relates to the field of automotive parts processing equipment technology, and in particular to a folding and forming device for processing automotive heat shields. Background Technology

[0002] Automotive heat shields are used near high-temperature components such as the engine compartment and exhaust pipe of a car to block heat transfer and protect other parts of the car and the safety of passengers. In the manufacturing process of automotive heat shields, edge forming is one of the key processes, and the quality of edge forming directly affects the performance and appearance of the heat shield.

[0003] Currently, most simple molds use a single-sided limiting method to place the heat shield in a positioning groove when folding automotive heat shields. This positioning method has serious drawbacks: First, single-sided limiting cannot effectively restrict the movement of the heat shield in other directions. During the folding process, when the mold applies pressure, the heat shield is prone to shifting within the positioning groove due to uneven force, resulting in deviations in the folding position. This seriously affects the dimensional accuracy and quality of the product, reducing the product qualification rate. Second, once the heat shield is fixed in the positioning groove, its position cannot be adjusted. If there is a deviation in the initial placement position, or if the folding position needs to be adjusted to meet different production requirements, existing molds cannot achieve this. The heat shield must be repositioned, which is not only cumbersome but also further increases the risk of positioning errors and reduces production efficiency. Therefore, a folding and forming device for automotive heat shield processing is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a folding and forming device for processing automotive heat shields, so as to solve the problems mentioned in the background art.

[0005] The technical solution of the folding and forming device for processing automotive heat shields provided in this application is as follows:

[0006] A folding and forming device for processing automotive heat shields includes a base and a stamping base. A lower mold is fixedly connected to the top outer wall of the base, and a folding groove is formed on the top middle section outer wall of the lower mold. An upper mold is fixedly connected to the bottom outer wall of the stamping base, and the upper mold is adapted to the folding groove.

[0007] A positioning mechanism is installed on the top outer wall of the lower mold. The positioning mechanism includes two positioning blocks and multiple clamping blocks. Each pair of clamping blocks is slidably connected to the outer wall of the positioning block. The two positioning blocks are slidably connected to the top outer wall of the lower mold. The folding groove is located between the two positioning blocks. A gear set is rotatably connected to the top outer wall of the positioning block through a rotating shaft. A rack is welded to the top outer wall of the two clamping blocks. Both racks mesh with the gear set. An adjustment component for driving the two positioning blocks to move is also installed inside the lower mold.

[0008] Preferably, a bracket is fixedly connected to the outer wall of the top middle section of the positioning block, and a self-locking motor is fixedly installed on the top outer wall of the bracket. The end of the output shaft of the self-locking motor passes through the bracket and is fixedly connected to the rotating shaft.

[0009] Preferably, the adjusting assembly includes a lead screw and two screw blocks, with the two screw blocks respectively welded to the outer wall of the bottom middle section of the two positioning blocks, and the screw blocks threadedly connected to the outer wall of the lead screw.

[0010] Preferably, the top outer wall of the lower mold has two clearance grooves, and the lead screw is rotatably connected to the inner wall of the clearance groove. The opposite ends of the two lead screws pass through the clearance grooves and are fixedly connected to handles.

[0011] Preferably, a top block is installed inside the folding groove, and two top rods are fixedly connected to the bottom outer wall of the top block. The bottom ends of the two top rods penetrate the lower mold and the base. A return spring is sleeved on the outer wall of each of the two top rods, and the return spring is located between the folding groove and the top block.

[0012] Preferably, the top outer wall of the lower mold is fixedly connected to two guide pillars, and the outer wall of the stamping seat is provided with two guide holes, with the two guide pillars slidably connected to the inner walls of the two guide holes respectively.

[0013] Preferably, a connector is fixedly connected to the outer wall of the top center of the stamping seat, and the connector is used to connect to an external hydraulic drive device.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. This device overcomes the shortcomings of traditional simple molds with single-sided limiting. It achieves bidirectional positioning of the heat insulation cover in both the horizontal and vertical directions through the positioning mechanism at the top of the lower mold. Two positioning blocks, together with multiple clamping blocks, utilize the transmission structure of gear sets and racks to clamp and fix the heat insulation cover from multiple directions. This prevents the heat insulation cover from shifting in the positioning groove due to uneven force during the folding process, effectively solving the problem of folding position deviation. Compared with traditional molds, it significantly improves the dimensional accuracy and quality of the product and greatly increases the product qualification rate.

[0016] 2. Addressing the limitation of existing mold heat shields having non-adjustable positions, this device features an adjustment component that drives a positioning block to slide on the top of the lower mold. By rotating the handle, the lead screw rotates, causing the screw block connected to the positioning block to move along the lead screw axis, thus flexibly adjusting the position of the positioning block. This allows the device to easily adjust the folding edge position according to the actual size of the heat shield, its initial placement, and different production needs, without needing to reposition the heat shield. This reduces operational steps, lowers the risk of positioning errors, greatly improves production efficiency, and enhances the device's adaptability to diverse production tasks. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of an embodiment of the application;

[0018] Figure 2 This is an exploded view of an embodiment of the application;

[0019] Figure 3 This is a partial exploded view of the structure of an embodiment of the application.

[0020] Explanation of reference numerals in the attached drawings: 1. Base; 2. Lower mold; 3. Guide post; 4. Stamping seat; 5. Guide hole; 6. Connector; 7. Upper mold; 8. Folding groove; 9. Ejector rod; 10. Ejector block; 11. Return spring; 12. Positioning block; 13. Clamping block; 14. Rotating shaft; 15. Gear set; 16. Bracket; 17. Self-locking motor; 18. Lead screw; 19. Screw block; 20. Clearance groove; 21. Rack; 22. Handle. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0022] This application discloses a folding and forming apparatus for processing automotive heat shields. (Refer to...) Figure 1-3 A folding and forming device for processing automotive heat shields includes a base 1 and a stamping base 4. The base 1 serves as the basic support structure for the entire device. Anchor bolt holes or rubber anti-slip pads can be provided at its bottom. The device is fixed to the factory ground by anchor bolts or in close contact with the ground by anti-slip pads to ensure the stability of the device during operation and avoid processing errors caused by vibration. The top outer wall of the base 1 is fixedly connected to a lower mold 2 by welding, bolt connection, or other methods. The lower mold 2 provides a basic positioning and forming working surface for folding and forming. A folding groove 8 is opened on the top middle section of its outer wall. The shape of the folding groove 8 is customized according to the bottom contour of the automotive heat shield. It is machined with high precision using a CNC machining center to ensure the dimensional accuracy and surface finish of the groove, so that it can accurately fit with the bottom of the heat shield and achieve initial positioning.

[0023] The bottom outer wall of the stamping base 4 is fixedly connected to the upper mold 7 by bolt fastening or integral molding. The upper mold 7 is adapted to the folding groove 8. The two are strictly corresponding in shape and size. During the folding process, the upper mold 7 moves downward and cooperates with the folding groove 8 to apply pressure to the heat insulation cover, causing it to undergo plastic deformation and complete the folding operation. The surfaces of the upper mold 7 and the folding groove 8 can be subjected to surface treatment processes such as quenching and hard chrome plating to improve the wear resistance and corrosion resistance of the mold and extend its service life.

[0024] A positioning mechanism is installed on the top outer wall of the lower mold 2. The positioning mechanism includes two positioning blocks 12 and multiple clamping blocks 13. The positioning blocks 12 provide the mounting base and motion guide for the clamping blocks 13. The number of positioning blocks 12 is set to two, symmetrically distributed on both sides of the folding groove 8. The outer wall of each positioning block 12 is machined with a dovetail block. Every two clamping blocks 13 are slidably connected to the dovetail block of the positioning block 12 through the dovetail groove. This sliding connection method, combined with the precision guide rail and slider structure, can ensure that the clamping block 13 slides smoothly and accurately on the positioning block 12. Similarly, the two positioning blocks 12 are also slidably connected to the top outer wall of the lower mold 2 through the cooperation of the dovetail block and the dovetail groove. The positioning blocks 12 can be driven to move along the guide rail by a servo motor or by manually rotating the screw 18 mechanism to achieve adaptive positioning of heat insulation covers of different sizes. The folding groove 8 is located between the two positioning blocks 12 to ensure that the positioning mechanism can effectively position the heat insulation cover placed in the folding groove 8.

[0025] The top outer wall of the positioning block 12 is rotatably connected to the gear set 15 via the rotating shaft 14. The rotating shaft 14 is made of high-strength alloy steel, and both ends are mounted on the positioning block 12 through high-precision bearings to ensure that the gear set 15 can rotate flexibly and stably. The gear set 15 consists of multiple meshing gears, which can realize the adjustment of the transmission ratio to meet the needs of different clamping forces and clamping speeds. The top outer walls of the two clamping blocks 13 are welded with racks 21, which mesh with the gear set 15. When the gear set 15 rotates, the rotational motion of the gear set 15 is converted into the linear motion of the clamping block 13 through the meshing transmission between the gear set 15 and the rack 21, so as to realize the clamping and releasing operation of the heat insulation cover.

[0026] The lower mold 2 is also equipped with an adjustment component that drives the two positioning blocks 12 to move. This adjustment component can adjust the distance between the two positioning blocks 12 according to the size of the heat insulation cover, thereby improving the versatility of the device. The specific structure and working principle of the adjustment component will be further described in the subsequent claims.

[0027] The top middle section of the outer wall of the positioning block 12 is fixedly connected to the bracket 16 by welding or bolting. The bracket 16 provides an installation support structure for the self-locking motor 17. Its shape and size are designed according to the shape and installation requirements of the self-locking motor 17 to ensure the stability and safety of the self-locking motor 17 installation. The self-locking motor 17 is fixedly installed on the top outer wall of the bracket 16 by bolts. The self-locking motor 17 has a power-off self-locking function, which can maintain a stable clamping force after clamping the heat insulation cover, preventing the clamping block 13 from loosening during the folding process. The output shaft end of the self-locking motor 17 passes through the bracket 16 and is fixedly connected to the rotating shaft 14 by a coupling. This connection method can ensure that the power of the motor is efficiently and stably transmitted to the rotating shaft 14, thereby driving the gear set 15 to rotate. By controlling the forward and reverse rotation of the self-locking motor 17, the gear set 15 can be rotated in both directions, thereby driving the clamping block 13 to perform clamping and loosening actions. At the same time, the speed and direction of the self-locking motor 17 can be precisely controlled by setting a frequency converter or PLC control system to meet different processing requirements.

[0028] The adjustment assembly includes a lead screw 18 and two screw blocks 19. The lead screw 18 is a high-precision trapezoidal lead screw or ball screw, which features high transmission efficiency and high positioning accuracy. The two screw blocks 19 are fixed to the outer wall of the bottom middle section of the two positioning blocks 12 by welding or bolting. The inner hole of the screw block 19 is machined with a thread that matches the lead screw 18. The two are connected by the thread. When the lead screw 18 rotates, according to the thread transmission principle, the screw block 19 will move along the axis of the lead screw 18, thereby driving the positioning block 12 to slide on the top outer wall of the lower mold 2. By controlling the number of rotations and direction of the lead screw 18, the distance between the two positioning blocks 12 can be precisely adjusted to adapt to different sizes of automotive heat shields. The screw blocks 19 can be made of copper alloy to reduce friction with the lead screw 18, improve transmission efficiency and service life.

[0029] Two clearance grooves 20 are provided on the top outer wall of the lower mold 2. The shape and size of the clearance grooves 20 are designed according to the shape and installation requirements of the lead screw 18, providing space for the installation and rotation of the lead screw 18. The lead screw 18 is installed on the inner wall of the clearance groove 20 through bearings. The bearings are deep groove ball bearings or angular contact ball bearings to ensure that the lead screw 18 can rotate flexibly. The opposite ends of the two lead screws 18 pass through the clearance grooves 20 and are fixedly connected to handles 22. The handles 22 are circular or elliptical in design, and the surface can be treated with anti-slip treatment, such as knurling or rubber coating, to facilitate the operator to manually rotate the lead screw 18. By rotating the handles 22, the lead screw 18 can be rotated, thereby realizing the adjustment of the position of the positioning block 12. In addition, a servo motor and reducer can also be installed at one end of the lead screw 18, and the position of the positioning block 12 can be automatically and accurately adjusted through the electrical control system, thereby improving production efficiency and automation.

[0030] A top block 10 is installed inside the folding groove 8. The shape of the top block 10 is adapted to the folding groove 8, and its top surface can be polished to ensure good contact with the bottom of the heat insulation cover and avoid damage to its surface when lifting the heat insulation cover. Two top rods 9 are fixedly connected to the bottom outer wall of the top block 10 by welding or bolting. The bottom ends of the two top rods 9 pass through the lower mold 2 and the base 1. Through holes are machined on the lower mold 2 and the base 1 at the positions corresponding to the top rods 9. The diameter of the through holes is slightly larger than the diameter of the top rods 9 to ensure that the top rods 9 can move freely up and down within the through holes. A return spring 11 is sleeved on the outer wall of each of the two top rods 9. The return spring 11 is located between the folding groove 8 and the top block 10. The return spring 11 is a compression spring, and its elastic coefficient is selected according to the weight of the heat insulation cover and the lifting force requirements. During the folding process, the upper mold 7 moves downward to support the heat insulation. When pressure is applied to the cover, the top block 10 moves downward under pressure, compressing the return spring 11. After the folding is completed, the upper mold 7 moves upward, the return spring 11 recovers its elastic deformation, and pushes the top block 10 upward to lift the folded heat insulation cover, making it easy for operators to remove the heat insulation cover. During the folding process, the return spring 11 can not only lift the heat insulation cover after the folding is completed, but also play a buffering role in the initial stage of stamping and folding. When the stamping seat 4 drives the upper mold 7 to move downward and contact the heat insulation cover, the top block 10 is first subjected to force and compresses the return spring 11. The elastic deformation of the spring absorbs part of the impact force, effectively reducing the instantaneous force of the upper mold 7 pressing down, and avoiding the heat insulation cover from breaking due to local stress concentration caused by excessive downward pressure of the stamping seat 4. This not only protects the quality of the finished heat insulation cover, but also extends the service life of the mold and improves the stability and reliability of the equipment operation.

[0031] Two guide pillars 3 are fixedly connected to the top outer wall of the lower mold 2 by welding or bolting. The guide pillars 3 have a cylindrical structure and their surfaces are hardened and chrome-plated to improve hardness and wear resistance. Two guide holes 5 are machined on the outer wall of the stamping seat 4. The diameter of the guide holes 5 matches the diameter of the guide pillars 3. The two guide pillars 3 are slidably connected to the inner walls of the two guide holes 5 respectively. The guide pillars 3 and the guide holes 5 form a guiding mechanism. During the up and down movement of the stamping seat 4, the guide pillars 3 slide in the guide holes 5, which plays a precise guiding role, ensuring that the upper mold 7 and the folding groove 8 can be accurately aligned, avoiding folding errors caused by the offset of the stamping seat 4, and improving the accuracy and quality of folding. At the same time, the guiding mechanism can also withstand the lateral force generated by the stamping seat 4 during the movement, enhancing the stability and reliability of the device.

[0032] A connector 6 is fixedly connected to the top center outer wall of the stamping base 4 by welding or bolting. The structure of the connector 6 is designed according to the interface type of the external hydraulic drive equipment, such as using a flange connection or a quick-connect coupling. The connector 6 is used to connect to the external hydraulic drive equipment, which is connected to the connector 6 through oil pipes to provide power for the up-and-down movement of the stamping base 4. The hydraulic drive equipment includes components such as a hydraulic pump, hydraulic cylinder, and hydraulic valves. By controlling the opening and closing of the hydraulic valves and the flow and pressure of the hydraulic pump, the movement speed of the stamping base 4 and the pressure applied to the heat insulation cover can be precisely controlled to meet different folding process requirements. The connection between the connector 6 and the stamping base 4 should have good sealing performance to prevent hydraulic oil leakage, while ensuring the connection is firm and able to withstand the large force applied by the hydraulic drive equipment.

[0033] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bending and forming device for processing automotive heat shields, comprising a base (1) and a stamping seat (4), characterized in that: The base (1) has a lower mold (2) fixedly connected to its top outer wall. The lower mold (2) has a folding groove (8) on its top middle section outer wall. The stamping base (4) has an upper mold (7) fixedly connected to its bottom outer wall. The upper mold (7) is adapted to the folding groove (8). The lower mold (2) is equipped with a positioning mechanism on its top outer wall. The positioning mechanism includes two positioning blocks (12) and multiple clamping blocks (13). Each pair of clamping blocks (13) is slidably connected to the outer wall of the positioning block (12). The two positioning blocks (12) are slidably connected to the top outer wall of the lower mold (2). The folding groove (8) is located between the two positioning blocks (12). The top outer wall of the positioning block (12) is rotatably connected to a gear set (15) via a rotating shaft (14). The top outer walls of the two clamping blocks (13) are welded with racks (21). Both racks (21) mesh with the gear set (15). The lower mold (2) is also equipped with an adjustment component that drives the two positioning blocks (12) to move.

2. The folding and forming device for processing automotive heat shields according to claim 1, characterized in that: A bracket (16) is fixedly connected to the outer wall of the top middle section of the positioning block (12). A self-locking motor (17) is fixedly installed on the outer wall of the top of the bracket (16). The output shaft end of the self-locking motor (17) passes through the bracket (16) and is fixedly connected to the rotating shaft (14).

3. The folding and forming device for processing automotive heat shields according to claim 1, characterized in that: The adjustment assembly includes a lead screw (18) and screw blocks (19). The two screw blocks (19) are respectively welded to the outer wall of the bottom middle section of the two positioning blocks (12). The screw blocks (19) are threadedly connected to the outer wall of the lead screw (18).

4. The folding and forming device for processing automotive heat shields according to claim 3, characterized in that: The lower mold (2) has two clearance grooves (20) on its top outer wall. The lead screw (18) is rotatably connected to the inner wall of the clearance groove (20). The two lead screws (18) are both connected to the clearance groove (20) at opposite ends and are fixedly connected to handles (22).

5. The folding and forming device for processing automotive heat shields according to claim 1, characterized in that: The folding groove (8) is equipped with a top block (10). The bottom outer wall of the top block (10) is fixedly connected to two top rods (9). The bottom ends of the two top rods (9) pass through the lower mold (2) and the base (1). The outer walls of the two top rods (9) are fitted with reset springs (11). The reset springs (11) are located between the folding groove (8) and the top block (10).

6. The folding and forming device for processing automotive heat shields according to claim 1, characterized in that: The top outer wall of the lower mold (2) is fixedly connected to two guide pillars (3), and the outer wall of the stamping seat (4) is provided with two guide holes (5). The two guide pillars (3) are slidably connected to the inner walls of the two guide holes (5).

7. The folding and forming device for processing automotive heat shields according to claim 1, characterized in that: A connector (6) is fixedly connected to the outer wall of the top middle of the stamping seat (4), and the connector (6) is used to connect to an external hydraulic drive device.

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