A stamping device for an automobile heat shield

Abstract

The application discloses a stamping equipment for an automobile heat shield, and belongs to the technical field of stamping equipment.The stamping equipment comprises a stamping equipment, a base, a fixing seat, a fixed die and a movable die, the heat shield is arranged between the movable die and the fixed die to realize stamping, and the stamping equipment further comprises a demolding mechanism for assisting the heat shield to be demolded upward from the fixed die and then discharged to the front side of the equipment.The demolding mechanism comprises a shell, a gas cylinder, a first displacement plate, a time sequence trigger assembly, a first pushing rod, a second displacement plate and a second pushing rod, the shell is fixedly arranged on the stamping equipment, the gas cylinder is fixedly arranged on the lower surface of the shell, and the output end of the gas cylinder extends into the inner cavity of the shell.The demolding mechanism is arranged, the same driving power is relied on to realize the linkage directional discharging of the heat shield in the sequence of being lifted upward and then pushed forward, the action waiting caused by mutual avoidance of mechanisms is eliminated, and the discharging efficiency is improved.In addition, a negative pressure cavity is formed by optimizing a guide assembly, downward pneumatic force is generated by using the opening-die action linkage, workpieces are prevented from being adsorbed on the surface of the movable die by negative pressure, and the heat shield is automatically and smoothly discharged after stamping.

Description

Technical Field

[0001] This invention belongs to the field of stamping equipment technology, and specifically relates to a stamping equipment for automotive heat shields. Background Technology

[0002] Automotive heat shields are generally made of aluminum sheets or thin sheets of aluminized steel. First, they are uncoiled, leveled, and blanked to obtain flat blanks. Then, they are stretched and formed to create an arc-shaped body and a flanged structure. After that, punching, trimming, and shaping processes are completed, and the springback of the forming is corrected to obtain the basic shape of the workpiece. After stamping, the workpiece is taken out of the mold. Subsequent processes include deburring, surface protection treatment, and inspection to complete the entire processing.

[0003] See Figure 12 Currently, after automotive heat shields are stamped, a suction cup conveying device is generally used to complete the workpiece unloading operation: the suction cup conveying device picks up the stamped heat shield, removes the workpiece from the stamping die surface, and moves it horizontally to the unloading area. Then, the suction cup is released by electronic control to complete the unloading of the heat shield.

[0004] The suction cup conveying device extends laterally through the cavity of the stamping equipment. Throughout the process of the suction cup adsorbing and transferring the workpiece, the stamping equipment needs to make avoidance movements. During the stamping operation, the suction cup conveying device also needs to retract to avoid interference and collision between the mechanisms. This unloading method requires the device to repeatedly and alternately avoid each other, and the process actions wait for each other, making it difficult to achieve efficient and rapid automated unloading of the heat insulation cover after stamping. Summary of the Invention

[0005] To address the problem of low stamping efficiency in existing heat shield stamping equipment where a suction cup conveyor traverses the stamping chamber, requiring both the stamping and workpiece removal processes to make way for each other, resulting in waiting and interference, this invention provides an automotive heat shield stamping equipment. By incorporating a demolding mechanism, this equipment utilizes a single driving force to achieve coordinated directional unloading of the heat shield, first lifting it upwards and then pushing it forward. This eliminates the need for the suction cup conveyor, removing the waiting time caused by the mutual avoidance of the mechanisms and improving unloading efficiency. The specific technical solution is as follows:

[0006] An automotive heat shield stamping device includes a stamping machine, a base, a fixed seat, a fixed mold, and a moving mold. The heat shield is stamped between the moving mold and the fixed mold. The device also includes a demolding mechanism that assists in demolding the heat shield upwards from the fixed mold and then feeding it to the front of the device. The demolding mechanism includes a housing, a cylinder, a first displacement plate, a timing trigger assembly, a first push rod, a second displacement plate, and a second push rod. The housing is fixed to the stamping machine. The cylinder is fixed to the lower surface of the housing, and its output end extends into the inner cavity of the housing. The first displacement plate is fixed to the output end of the cylinder and is controlled by the first displacement plate to move vertically along the inner cavity of the housing. The timing trigger assembly is disposed in the inner cavity of the housing. The first push rod is vertically fixed to the first displacement plate, and its top end extends upwards through the housing. The second displacement plate is slidably sleeved on the first push rod. The second push rod is vertically fixed to the second displacement plate, and its top end extends upwards through the housing.

[0007] The first push rod and the second push rod are driven by the cylinder and the timing trigger component, which work together to drive the heat insulation cover on the fixed mold to first lift upward and then push forward in a coordinated manner for material feeding.

[0008] In the above technical solution, the timing triggering component includes a shaft seat, a swing rod, a first roller, a second roller, a limiting block, and a spring. The shaft seat is fixedly mounted on the first displacement plate. The swing rod is rotatably mounted on the shaft seat and is integrally formed from two sets of rods at an obtuse angle. The first roller and the second roller are rotatably mounted at both ends of the swing rod, and the second roller is controlled to roll in contact with the lower surface of the second displacement plate. The limiting block is vertical and fixedly mounted on the inner wall of the housing. The first roller is controlled to roll in contact with the lower surface of the limiting block, and the limiting block is located above the first roller. The spring is sleeved on the second push rod, and both ends of the spring are connected to the second displacement plate and the inner wall of the housing, respectively.

[0009] The above technical solution also includes a signal transmission component, which includes a first trigger, a fixing block, and a second trigger. The first trigger is fixed to the lower surface of the first displacement plate and is controlled to contact the inner wall of the housing; the fixing block is fixed to the upper surface of the first displacement plate; and the second trigger is fixed to the lower surface of the second displacement plate and is controlled to contact the upper surface of the fixing block.

[0010] The above technical solution also includes a stamping assembly, which includes a hydraulic cylinder and a top seat. The hydraulic cylinder is fixed on the upper surface of the stamping equipment; the top seat is fixed on the output end of the hydraulic cylinder, and the moving die is fixed on the lower surface of the top seat.

[0011] In the above technical solution, a first guide assembly is provided between the base and the top seat. The first guide assembly includes a first guide seat and a first guide rod. The first guide seat is vertically fixed to one corner of the upper surface of the base, and the inner cavity of the first guide seat is a closed negative pressure cavity. The first guide rod is vertically fixed to one corner of the lower surface of the top seat, and the bottom end of the first guide rod is slidably inserted into the inner cavity of the first guide seat.

[0012] The above technical solution also includes a pneumatic component, which includes a movable plug and a connecting pipe. The movable plug is fixed at the bottom end of the first guide rod and is controlled to move up and down along the closed negative pressure cavity of the first guide seat. One end of the connecting pipe is connected to the closed negative pressure cavity of the first guide seat, and the other end passes through and extends to the lower surface of the moving mold.

[0013] In the above technical solution, a second guide assembly is provided between the base and the top seat. The second guide assembly is divided into three groups and is respectively provided at the other three diagonal positions of the base and the top seat. Each group of the second guide assembly includes a second guide seat and a second guide rod. The second guide seat is vertically fixed to the upper surface of the base; the second guide rod is vertically fixed to the lower surface of the top seat, and the second guide rod is slidably inserted into the inner cavity of the second guide seat.

[0014] In the above technical solution, a material guide assembly is provided on the front side of the fixed base. The material guide assembly includes an extension block, a long bolt, a locking nut, a material feed plate, and a side baffle. The extension blocks are divided into two groups and are respectively fixed to the left and right ends of the front side wall of the fixed base. The long bolt passes through the side wall of each group of extension blocks and is provided with an external thread. The locking nut is sleeved on the long bolt and is provided with an internal thread that matches the external thread of the long bolt. The material feed plate is fixed between the two groups of long bolts and is inclined downward on the front side of the fixed base. The side baffle is divided into two groups and is respectively fixed on both sides of the upper surface of the material feed plate.

[0015] In the above technical solution, the stamping equipment has a working cavity that runs through the middle in a horizontal direction. The base is fixed on the working cavity of the stamping equipment. The fixed seat and the fixed die are fixed on the upper surface of the base in sequence. The upper surface of the fixed seat has a strip groove that matches the shape of the moving die.

[0016] In the above technical solution, a controller is provided on the side wall of the stamping equipment, and the first trigger, the second trigger, and the hydraulic cylinder are electrically connected to the controller.

[0017] The automotive heat shield stamping equipment of the present invention has the following advantages compared with the prior art:

[0018] I. This invention includes a demolding mechanism for pushing and demolding the heat insulation cover workpiece after it has been stamped with a fixed mold. This demolding mechanism, relying on the same driving power, achieves a linked unloading action where the heat insulation cover is first lifted upwards and then directionally pushed forward, allowing the heat insulation cover to be directionally unloaded from the front of the stamping equipment. This structure eliminates the need for an additional suction cup conveyor for material handling; after the stamping process, it directly achieves automated directional unloading of the heat insulation cover through continuous upward and forward pushing, eliminating the need for the traditional suction cup conveyor and stamping equipment to make way for each other and the waiting time, effectively improving the overall efficiency of the heat insulation cover stamping and unloading operation.

[0019] II. This invention uses a cylinder to drive the first displacement plate upwards, and utilizes a swing rod located between the first and second displacement plates for linkage transmission. This achieves a sequential action where the first and second push rods move upwards synchronously, followed by the second push rod accelerating upwards relative to the first push rod. This completes the entire process of directional feeding, where the heat insulation cover first detaches upwards and then is pushed forward. The entire sequence of actions is automatically linked by a single upward driving force, eliminating the need for two independent drive structures. The drive transmission is continuous and stable, the equipment control logic is simple, and the heat insulation cover feeding action is continuous and smooth.

[0020] Third, this invention optimizes the structure of a set of guide components between the moving die and the fixed die of the stamping equipment, creating a closed negative pressure cavity at the position of the guide components. A connecting pipe connects the closed negative pressure cavity of the first guide seat to the lower part of the moving die. During the mold opening process, where the moving die moves upward and separates from the fixed die, a downward pneumatic force is automatically generated to apply demolding air pressure to the stamped heat insulation cover, causing the heat insulation cover to completely detach from the lower surface of the moving die. This effectively solves the problem of negative pressure adsorption and difficulty in demolding of the workpiece after stamping and bonding. This pneumatic ejection function is linked to the mold opening action of the moving die, eliminating the need for an additional independent ejection drive structure, resulting in high structural integration and a strong degree of automation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the stamping equipment according to Embodiment 1 of the present invention;

[0022] Figure 2 This is a front view of the material cutting plate in Embodiment 1 of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the second guide seat in Embodiment 1 of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the moving mold in Embodiment 1 of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the movable plug in Embodiment 1 of the present invention;

[0026] Figure 6This is a schematic diagram of the side baffle of Embodiment 1 of the present invention;

[0027] Figure 7 for Figure 6 Enlarged view of point A;

[0028] Figure 8 This is a schematic diagram of the structure of the first push rod in Embodiment 1 of the present invention;

[0029] Figure 9 This is a cross-sectional structural diagram of the shell in Embodiment 1 of the present invention;

[0030] Figure 10 This is a right view of Embodiment 1 of the present invention when the top ends of the first push rod and the second push rod are flush.

[0031] Figure 11 This is a right view of Embodiment 2 of the present invention when the top of the second push rod is higher than the top of the first push rod;

[0032] Figure 12 A schematic diagram of the structure for unloading heat insulation covers using an adsorption conveyor line in existing stamping equipment;

[0033] Figures 1 to 11 In the middle, 1. stamping equipment, 2. base, 3. fixed seat, 4. fixed mold, 5. housing, 6. cylinder, 7. first displacement plate, 8. shaft seat, 9. swing rod, 10. first roller, 11. second roller, 12. limit stop, 13. first push rod, 14. second displacement plate, 15. second push rod, 16. spring, 17. first trigger, 18. second trigger, 19. hydraulic cylinder, 20. top seat, 21. moving mold, 22. first guide seat, 23. first guide rod, 24. moving plug, 25. connecting pipe, 26. second guide rod, 27. second guide seat, 28. extension block, 29. long bolt, 30. locking nut, 31. unloading plate, 32. side baffle, 33. controller, 34. fixed block. Detailed Implementation

[0034] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their illustrations to simplify the drawings. The following describes specific implementation examples and accompanying drawings. Figures 1 to 11 The present invention will be further described, but the present invention is not limited to these embodiments.

[0035] Example 1

[0036] See Figures 1 to 10 As shown, an automotive heat shield stamping equipment includes a stamping device 1, a base 2, a fixed seat 3, a fixed die 4, and a moving die 21. The automotive engine heat shield workpiece is stamped and formed within the mold-closing space of the moving die 21 and the fixed die 4. The lifting stroke of the moving die 21, the die opening termination height, and the stamping, demolding, and unloading sequence of the entire equipment are all preset and logically controlled by a controller 33 installed on the side wall of the equipment. This allows the equipment to adapt to the stamping processing requirements of heat shields of different specifications, and the equipment has strong automation and controllability.

[0037] Main references Figure 1 , Figure 5 and Figure 6 As shown, the stamping equipment 1 adopts a commonly used thin-plate metal stamping equipment in the existing industrial field, specifically adapted for stamping and forming operations of thin aluminum sheets and aluminized steel sheets for automotive heat shields. The equipment has a mature structure and stable load. A rectangular working cavity is horizontally integrated in the middle of the stamping equipment 1, serving as the core working area for mold installation and workpiece processing. The base 2 is fixed to the bottom surface of the working cavity of the stamping equipment 1 by bolt fastening, supporting all the upper molds and tooling structures. The fixed seat 3 is horizontally fixedly installed on the upper surface of the base 2, and the fixed mold 4 is locked to the top surface of the fixed seat 3 by positioning pins and bolts, ensuring mold installation accuracy and processing stability. The upper surface of the fixed seat 3 has a strip-shaped groove that matches the outer contour of the moving mold 21, which guides the downward displacement of the moving mold 21 during mold closing, ensuring accurate alignment of the fixed mold 4 and the moving mold 21 during mold closing.

[0038] This equipment integrates a demolding mechanism, specifically designed to vertically lift the stamped heat insulation cover workpiece from the surface of the fixed mold 4 and push it forward for unloading, replacing the traditional suction cup conveying device for material transfer and unloading. The demolding mechanism includes a housing 5, a cylinder 6, a first displacement plate 7, a timing trigger assembly, a first push rod 13, a second displacement plate 14, and a second push rod 15. The housing 5 is integrally welded and fixed to the outer wall of the stamping equipment 1, providing a fixed mounting base and protective shield for the internal moving components, preventing processing debris and oil from affecting the mechanism's movement accuracy.

[0039] Cylinder 6 is vertically locked and fixed at the center of the lower surface of housing 5. The telescopic output end of cylinder 6 extends vertically upward into the inner cavity of housing 5. The horizontal plate structure of the first displacement plate 7 is rigidly fixed to the top of the output push rod of cylinder 6 by flange bolts, and can stably reciprocate along the vertical direction of the inner cavity of housing 5 following the telescopic stroke of cylinder 6. Specifically, in this embodiment, cylinder 6 is a commercially available standard SC63×100 type pneumatic self-locking reciprocating cylinder. This cylinder has a mechanical self-locking function, and under the conditions of fluctuating air supply or instantaneous air interruption in the workshop, it can stably lock the output push rod at any stroke position without falling back or surging, thereby improving the safety and stability of equipment operation and adapting to continuous automated stamping operations.

[0040] The timing triggering assembly is assembled in the inner cavity of the housing 5 to realize differentiated timing pushing operations of the two sets of push rods. The first push rod 13 is vertically fixed to the upper surface of the first displacement plate 7, with the top of the rod vertically upward through the top plate of the housing 5, and rises and falls synchronously with the first displacement plate 7; the second displacement plate 14 is slidably sleeved on the outside of the first push rod 13 through the central through hole, and can slide independently vertically relative to the first push rod 13 without rigid restraint; the second push rod 15 is vertically fixed to the upper surface of the second displacement plate 14, and its top also penetrates the top plate of the housing 5, for directly contacting and pushing the bottom surface of the heat insulation cover workpiece.

[0041] This demolding mechanism relies on a single set of cylinders 6 as the sole drive source, and with the mechanical linkage of the timing trigger components, it can automatically complete the continuous unloading action of first vertically lifting the heat insulation cover as a whole, and then tilting and pushing it forward without the need for step-by-step control by the electrical control program. It eliminates the need for the suction cup transfer and conveying device that is used with traditional stamping equipment, and avoids the problems of repeated avoidance and interlocking of the suction cup transfer mechanism and stamping mold. It effectively shortens the processing cycle of a single workpiece and improves the overall unloading efficiency.

[0042] For details, please refer to the main references. Figures 8 to 11 As shown, the timing triggering assembly includes a bearing seat 8, a swing rod 9, a first roller 10, a second roller 11, a limit stop 12, and a spring 16. The bearing seat 8 is bolted to a preset installation position on the upper surface of the first displacement plate 7, providing a rotation fulcrum for the swing rod 9. The swing rod 9 is integrally forged and has an obtuse-angled bent rod structure, which has high structural strength and is not easily deformed. The middle part of the swing rod 9 is rotatably hinged to the bearing seat 8, and can freely rotate and swing slightly around the axis of the bearing seat 8.

[0043] The swing arm 9 is equipped with a first roller 10 and a second roller 11 at both ends via axles. Both sets of rollers are made of silent and wear-resistant nylon to reduce rolling friction loss. The second roller 11 rolls against the lower surface of the second displacement plate 14, providing an upward pushing force directly to the second displacement plate 14. As the first displacement plate 7 moves upward, the first roller 11 contacts and engages with the lower surface of the limiting block 12. The limiting block 12 is vertically fixed at a preset height on the inner wall of the housing 5, and its position remains unchanged. It serves as a mechanical limiting trigger point to forcibly constrain the swing timing of the swing arm 9.

[0044] Spring 16 is sleeved on the outside of the second push rod 15. The lower end of spring 16 abuts against the upper surface of the second displacement plate 14, and the upper end of spring 16 abuts against the lower surface of the top plate of the housing 5. In the reset state of the equipment, the second displacement plate 14 is pressed down by the pre-tightening force of spring 16 to ensure accurate reset of the mechanism without jamming or deviation.

[0045] This timing triggering component achieves timing actions through pure mechanical structure linkage, without the need for additional solenoid valves or sensors for auxiliary control. It can complete the switching between synchronous lifting and differentiated accelerated lifting actions by relying on the driving force of a single cylinder. It has a simple structure, low failure rate, and simplifies the overall control logic of the equipment.

[0046] Main references Figures 9 to 11 As shown, the device also includes a signal transmission component, which comprises a first trigger 17, a fixing block 34, and a second trigger 18. The first trigger 17 is a commercially available mechanical contact sensor, fixedly mounted on the lower surface of the first displacement plate 7. It can precisely contact the inner wall of the housing 5 when the first displacement plate 7 moves downward to reset, outputting a reset signal. The fixing block 34 is welded and fixed to the corresponding position on the upper surface of the first displacement plate 7, providing a contact reference surface for the second trigger 18. The second trigger 18 is also a mechanical contact sensor, fixedly mounted on the lower surface of the second displacement plate 14. When moving downward to reset, it can contact the upper surface of the fixing block 34 and output a signal.

[0047] Both sets of triggers are electrically connected to controller 33, which can provide real-time feedback on the mechanism reset status, effectively preventing the equipment from starting the stamping process when the mechanism is not fully reset, eliminating the risk of interference and collision between the mold and the push rod, and improving the safety and automation of equipment operation.

[0048] Main references Figures 2 to 5 As shown, this equipment is equipped with a stamping assembly, which includes a hydraulic cylinder 19 and a top seat 20. The hydraulic cylinder 19 is vertically fixed at the center of the top frame of the stamping equipment 1. A standard hydraulic drive cylinder suitable for this tonnage stamping equipment is selected to provide a stable and continuous stamping driving force for the extrusion forming of the heat insulation cover sheet, meeting the forming requirements of stretching and shaping of thin metal sheets. The top seat 20 is horizontally fixed at the bottom of the telescopic output end of the hydraulic cylinder 19. The moving die 21 is fixed to the lower surface of the top seat 20 by bolts, so that the moving die 21 can follow the top seat 20 and the hydraulic cylinder 19 to achieve overall vertical lifting and lowering, completing the die closing stamping and die opening reset actions.

[0049] Main references Figure 5 and Figure 6 As shown, a first guide assembly is assembled between the base 2 and the top seat 20. The first guide assembly includes a first guide seat 22 and a first guide rod 23. The first guide seat 22 is vertically fixed at one corner of the upper surface of the base 2. The interior of the first guide seat 22 is a sealed hollow structure, forming a closed negative pressure cavity, which has the functions of air storage and sealed pressurization. The first guide rod 23 is vertically fixed at the corresponding position on the lower surface of the top seat 20. The bottom end of the first guide rod 23 is slidably inserted into the inner cavity of the first guide seat 22, and can slide precisely vertically along the inner wall of the cavity, while undertaking the dual functions of mold guidance and cavity compression air intake.

[0050] Main references Figure 4 and Figure 5 As shown, a pneumatic ejector assembly is provided, comprising a moving plug 24 and a connecting pipe 25. The moving plug 24 adopts a wear-resistant, sealed rubber piston structure and is fixedly installed at the bottom end of the first guide rod 23. The outer wall of the moving plug 24 is tightly sealed to the inner wall of the cavity of the first guide seat 22, and can synchronously compress the air in the cavity as the first guide rod 23 moves upward. The connecting pipe 25 is a pressure-resistant high-pressure air pipe, one end of which passes through the closed cavity of the first guide seat 22, and the other end extends through to the mold cavity position on the lower surface of the moving mold 21, which can accurately guide the compressed high-pressure airflow to the contact surface between the moving mold 21 and the heat insulation cover workpiece.

[0051] During the upward movement of the moving mold 21, the mold itself automatically compresses air and generates a high-pressure demolding airflow by lifting and lowering the mold. It does not require an external air pump, air valve or other independent demolding drive structure. It can effectively break the vacuum adsorption state between the workpiece and the mold after stamping and force the heat insulation cover adhering to the lower surface of the moving mold 21 to be blown off. It solves the industry pain point of negative pressure adsorption and demolding difficulty of stamped workpieces. It has a high degree of structural integration and does not require additional energy consumption.

[0052] Main references Figure 3 As shown, three sets of second guide components are arranged around the base 2 and the top seat 20. The three sets of second guide components are respectively arranged at the remaining three diagonal positions of the base 2 and the top seat 20, forming a four-point symmetrical guide structure with the first guide components. Each set of second guide components includes a second guide seat 27 and a second guide rod 26. The second guide seat 27 is vertically fixed to the upper surface of the base 2, and the second guide rod 26 is vertically fixed to the lower surface of the top seat 20. The lower end of the second guide rod 26 is slidably inserted into the inner cavity of the second guide seat 27.

[0053] During the overall lifting and lowering process of the top seat 20 and the moving mold 21, the three sets of second guide rods 26 slide vertically along the inner cavity of the second guide seat 27 in sync, providing all-round limiting and guiding for the lifting and lowering trajectory of the moving mold 21, strictly ensuring that the moving mold 21 only makes vertical displacement, avoiding horizontal offset and shaking, and effectively ensuring the mold closing accuracy and workpiece forming quality.

[0054] Main references Figure 6 and Figure 7As shown, a material guide assembly is provided on the front side of the fixed base 3 to receive the heat insulation cover after demolding and guide it smoothly out of the mold. The material guide assembly includes an extension block 28, a long bolt 29, a locking nut 30, a material discharge plate 31, and a side baffle 32. The extension blocks 28 are divided into two groups and fixed to the left and right ends of the front side wall of the fixed base respectively. The long bolt 29 passes through the side wall of each group of extension blocks 28 and has an external thread. The locking nut 30 is sleeved on the long bolt 29 and has an internal thread that matches the external thread of the long bolt 29. The material discharge plate 31 is fixed between the two groups of long bolts 29 and is inclined downward on the front side of the fixed base 3. The side baffle 32 is divided into two groups and fixed to both sides of the upper surface of the material discharge plate 31 respectively.

[0055] Two sets of extension blocks 28 are symmetrically fixed at the left and right ends of the front side wall of the fixed base 3, serving as the fixed support base for the material feeding structure; long bolts 29 penetrate the side wall opening of extension blocks 28 laterally, and locking nuts 30 are threaded onto the outside of the long bolt 29 rod body for locking, positioning, and preventing loosening and slipping.

[0056] The unloading plate 31 is fixed at an overall angle between two sets of long bolts 29, maintaining an inclination that is lower in the front and higher in the back, providing a stable guiding slope for the workpiece to slide down. Two sets of side baffles 32 are fixed on the left and right sides of the upper surface of the unloading plate 31, which can effectively prevent the workpiece from shifting or slipping laterally, ensuring that the workpiece falls accurately into the front collection box. At the same time, the angle of the long bolts 29 can be finely adjusted by loosening and loosening the locking nut 30, so as to achieve a small adjustment of the inclination slope of the unloading plate 31, which can adapt to the unloading needs of heat insulation covers of different thicknesses and weights.

[0057] Main references Figure 1 As shown, a controller 33 is fixedly mounted on the outer wall of the stamping equipment 1. The controller 33 is the core electrical control unit of the entire equipment, integrating timing control, signal reception, and command output functions. The first trigger 17, the second trigger 18, and the hydraulic cylinder 19 are all electrically connected to the controller 33, which can transmit mechanism position signals in real time and receive start and stop control commands to realize full-process automated linkage control.

[0058] When the equipment is in reset condition, when the first displacement plate 7 descends to the limit position, the first trigger 17 attaches to the inner wall of the housing 5 and sends a position signal to the controller 33. The controller 33 immediately controls the cylinder 6 to stop descending, completing the precise reset of the first displacement plate 7. After the second displacement plate 14 descends, the second trigger 18 attaches to the upper surface of the fixing block 34 and feeds back a signal, realizing the reset determination of the second displacement plate 14.

[0059] When the cylinder 6 drives the first displacement plate 7 to move downward and reset, the first roller 10 gradually disengages from the limiting block 12, and the forced swing state of the swing rod 9 is released. At this time, the spring 16 releases its elastic potential energy and presses down the second displacement plate 14 and the second push rod 15, so that the entire set of timing demolding mechanism automatically returns to the initial state and waits for the next stamping cycle. The mechanism reset does not require manual intervention and has a high degree of automation.

[0060] The specific working principle of this equipment is as follows:

[0061] When the stamping equipment processes the heat insulation cover, the controller 33 controls the hydraulic cylinder 19 to start, driving the top seat 20 and the moving mold 21 to rise upwards, completing the mold opening action. During the rising process of the top seat 20, the first guide rod 23 simultaneously drives the bottom moving plug 24 to slide upwards along the inner cavity of the first guide seat 22, squeezing the air in the closed cavity of the first guide seat 22. The high-pressure air is quickly transported to the lower surface of the moving mold 21 through the connecting pipe 25. During the process of the moving mold 21 gradually rising and separating from the workpiece, the high-pressure airflow continuously acts on the contact surface between the workpiece and the mold, and the pneumatic force forces the formed heat insulation cover to quickly detach from the lower surface of the moving mold 21, avoiding workpiece adhesion and material carrying problems caused by stamping negative pressure.

[0062] When the moving mold 21 is raised to be completely separated from the fixed mold 4, and the stroke height reaches the mold opening height threshold preset by the controller 33, the controller 33 determines that the mold opening is complete, and then outputs a control signal to start the cylinder 6. The cylinder 6 extends to drive the first displacement plate 7 to move upward as a whole, and simultaneously drives the first push rod 13, the second displacement plate 14, and the second push rod 15 to move upward together, so that the tops of the first push rod 13 and the second push rod 15 extend out of the upper end face of the fixed mold 4 at the same time, and vertically lift the heat insulation cover that is stuck on the forming surface of the fixed mold 4, realizing the initial demolding and separation of the workpiece from the fixed mold.

[0063] The cylinder 6 continues to extend and drive the first displacement plate 7 to continue moving upward. When the first roller 10 at the end of the swing rod 9 contacts the limiting block 12, it is rigidly constrained by the fixed limiting structure and cannot continue to move vertically upward. This forces the swing rod 9 to swing clockwise around the shaft seat 8 as the fulcrum. The second roller 11 at the other end of the swing rod 9 swings downward simultaneously and pushes the second displacement plate 14 upward, giving the second displacement plate 14 and the second push rod 15 additional upward thrust, creating an accelerated upward displacement difference relative to the first push rod 13.

[0064] At this time, the second push rod 15 lifts the rear end of the workpiece, and the first push rod 13 supports the front end of the workpiece, so that the heat insulation cover forms an inclined posture with the rear end higher and the front end lower, and it detaches from the surface of the fixed mold 4 along the inclined direction. After detachment, the workpiece falls onto the surface of the inclined unloading plate 31 below, and slides smoothly down the guide surface of the unloading plate 31 by its own weight, and finally falls into the collection box preset on the front side of the stamping equipment 1, completing the fully automatic unloading. The entire set of equipment can automatically complete the entire process of heat insulation cover stamping, pneumatic deattachment on the moving mold side, vertical lifting of the workpiece on the fixed mold side, and inclined pushing unloading in sequence. The process is continuous and requires no manual intervention.

[0065] This invention utilizes a demolding mechanism to achieve coordinated directional unloading of the heat insulation cover by first lifting it upwards and then pushing it forward, relying on the same driving force. This eliminates the need for a suction cup conveying device, avoids the waiting time caused by mutual avoidance between mechanisms, and improves unloading efficiency. At the same time, the sequential pushing action is achieved through the coordinated action between components, eliminating the need for two independent drives and simplifying the equipment control logic. In addition, the guide components between the moving mold and the fixed mold are optimized to form a negative pressure cavity. The downward pneumatic force is generated by the mold opening action, preventing the workpiece from being negatively adsorbed on the surface of the moving mold. This eliminates the need for an additional unloading drive, resulting in a high degree of overall structural integration and enabling automated and smooth unloading of the heat insulation cover after stamping.

[0066] Example 2

[0067] See Figure 11 As shown in the attached diagram, when the second push rod 15 rises above the first push rod 13, the positions of the swing rod 9, the first roller 10, and the second roller 11 are schematically displayed. In this state, the second roller 11 at the other end of the swing rod 9 abuts against and pushes the second displacement plate 14 upward, causing the second push rod 15 to accelerate upward relative to the first push rod 13, forming an inclined thrust on the heat insulation cover with a higher rear end and a lower front end, driving the heat insulation cover forward and away from the surface of the fixed mold 4. The workpiece falls onto the unloading plate 31, slides down the inclined guide surface of the unloading plate 31, and falls into the collection box arranged on the front side of the stamping equipment 1.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A stamping apparatus for an automotive heat shield, comprising a stamping apparatus (1), a base (2), a fixed base (3), a fixed die (4), and a moving die (21), wherein the heat shield is stamped between the moving die (21) and the fixed die (4), characterized in that: It also includes a demolding mechanism for the auxiliary heat insulation cover to be demolded upwards from the fixed mold (4) and then discharged to the front of the equipment, the demolding mechanism comprising: The housing (5) is fixed on the stamping equipment (1); The cylinder (6) is fixed to the lower surface of the housing (5) and its output end extends into the inner cavity of the housing (5); The first displacement plate (7) is fixed at the output end of the cylinder (6) and is controlled by the first displacement plate (7) to move vertically along the inner cavity of the housing (5); A timing triggering component is disposed in the inner cavity of the housing (5); The first push rod (13) is vertically fixed on the first displacement plate (7), and the top end of the first push rod (13) extends upward through the housing (5). The second displacement plate (14) is controlled to slide and is sleeved on the first push rod (13); The second push rod (15) is vertically fixed on the second displacement plate (14), and the top end of the second push rod (15) extends upward through the housing (5). The first push rod (13) and the second push rod (15) are driven by the cylinder (6) and work together with the timing trigger component to drive the heat insulation cover on the fixed mold (4) to lift up first and then push forward in a coordinated manner.

2. The automotive heat shield stamping equipment according to claim 1, characterized in that: The timing triggering component includes: The bearing seat (8) is fixed on the first displacement plate (7); The swing rod (9) is rotatably mounted on the bearing seat (8), and the swing rod (9) is integrally formed from two sets of rods at an obtuse angle; The first roller (10) and the second roller (11) are respectively rotatably disposed at both ends of the swing rod (9), and the second roller (11) is controlled to roll in contact with the lower surface of the second displacement plate (14); The limiting block (12) is vertically fixed to the inner wall of the housing (5), the first roller (10) is controlled to roll in contact with the lower surface of the limiting block (12), and the limiting block (12) is located above the first roller (10). A spring (16) is sleeved on the second push rod (15), and the two ends of the spring (16) are respectively connected to the second displacement plate (14) and the inner wall of the housing (5).

3. The automotive heat shield stamping equipment according to claim 2, characterized in that: It also includes a signal transmission component, which includes: The first trigger (17) is fixed on the lower surface of the first displacement plate (7) and is controlled to contact the inner wall of the housing (5); A fixing block (34) is fixed to the upper surface of the first displacement plate (7); The second trigger (18) is fixed to the lower surface of the second displacement plate (14) and is controlled to contact the upper surface of the fixed block (34).

4. The automotive heat shield stamping equipment according to claim 3, characterized in that: It also includes a stamping assembly, the stamping assembly comprising: A hydraulic cylinder (19) is fixed to the upper surface of the stamping equipment (1); The top seat (20) is fixed to the output end of the hydraulic cylinder (19), and the moving mold (21) is fixed to the lower surface of the top seat (20).

5. The automotive heat shield stamping equipment according to claim 4, characterized in that: A first guide component is provided between the base (2) and the top seat (20), the first guide component comprising: The first guide seat (22) is vertically fixed to one corner of the upper surface of the base (2), and the inner cavity of the first guide seat (22) is a closed negative pressure cavity; The first guide rod (23) is vertically fixed to one corner of the lower surface of the top seat (20), and the bottom end of the first guide rod (23) is slidably inserted into the inner cavity of the first guide seat (22).

6. The automotive heat shield stamping equipment according to claim 5, characterized in that: It also includes pneumatic components, which include: The movable plug (24) is fixed at the bottom end of the first guide rod (23), and its movement is controlled to move up and down along the first guide seat (22) to close the negative pressure cavity; The connecting pipe (25) is connected at one end to the closed negative pressure cavity of the first guide seat (22), and at the other end it extends through and to the lower surface of the moving mold (21).

7. The automotive heat shield stamping equipment according to claim 5, characterized in that: A second guide assembly is provided between the base (2) and the top seat (20). The second guide assembly is divided into three groups and is respectively arranged at the other three diagonal positions of the base (2) and the top seat (20). Each group of the second guide assembly includes: The second guide seat (27) is vertically fixed to the upper surface of the base (2); The second guide rod (26) is vertically fixed to the lower surface of the top seat (20), and the second guide rod (26) is slidably inserted into the inner cavity of the second guide seat (27).

8. The automotive heat shield stamping equipment according to claim 1, characterized in that: A material feeding guide assembly is provided on the front side of the fixed base (3), the material feeding guide assembly including: The extension block (28) is divided into two groups and fixed to the left and right ends of the front side wall of the fixed seat (3); Long bolts (29) penetrate the sidewall of each set of extension blocks (28), and the long bolts (29) are provided with external threads; A locking nut (30) is fitted onto the long bolt (29), and the locking nut (30) is provided with an internal thread that is compatible with the external thread of the long bolt (29); The feed plate (31) is fixed between the two sets of long bolts (29) and is inclined downward on the front side of the fixed seat (3); The side baffles (32) are divided into two groups and fixed on both sides of the upper surface of the feed plate (31).

9. The automotive heat shield stamping equipment according to claim 4, characterized in that: The stamping equipment (1) has a working cavity that runs horizontally through the middle. The base (2) is fixed on the working cavity of the stamping equipment (1). The fixed seat (3) and the fixed mold (4) are fixed on the upper surface of the base (2) in sequence. The upper surface of the fixed seat (3) has a strip groove that matches the shape of the moving mold (21).

10. The automotive heat shield stamping equipment according to claim 9, characterized in that: The stamping equipment (1) is provided with a controller (33) on its side wall. The first trigger (17), the second trigger (18), and the hydraulic cylinder (19) are electrically connected to the controller (33).

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