A sensor housing press forming die

Abstract

This utility model relates to the field of sensor housing manufacturing technology, specifically to a sensor housing stamping die, including a stamping machine body, an upper die, a lower die, a positioning component, and a demolding component. The upper die is movably installed inside the stamping machine body, and the lower die is fixedly installed inside the stamping machine body. The positioning component is disposed inside the stamping machine body and is used to guide and fix the position of the pre-processed part placed above the lower die during the stamping process. The demolding component is disposed on one side and inside the lower die and is used to apply release oil between the pre-processed part and the lower die during the stamping process to assist in the unloading of the material after demolding. Compared with the prior art, this application solves the problems of inaccurate workpiece positioning, difficult demolding, and complex structure of existing sensor housing stamping dies.

Description

Technical Field

[0001] This utility model relates to the field of sensor housing manufacturing technology, and in particular to a sensor housing stamping mold. Background Technology

[0002] Sensor housings are crucial structural components that protect internal sensor elements from external environmental influences, ensuring their proper operation. They are widely used in the automotive, electronics, and electrical industries. These housings typically feature precise structures, strict dimensional requirements, and large-volume production demands, thus necessitating the use of stamping processes in their manufacturing. Stamping is a method of efficiently and consistently deforming sheet metal using dies in a stamping press, offering advantages such as high production efficiency, good dimensional stability, and suitability for large-scale manufacturing.

[0003] While existing sensor housing stamping dies can meet basic forming requirements, they still have certain limitations in terms of workpiece positioning, demolding assistance, and die lifespan. Specifically, some dies are not equipped with automatic limit mechanisms, which can easily cause workpiece displacement after placement, affecting forming accuracy. At the same time, during high-frequency stamping, adhesion can easily occur between the die and the workpiece surface, resulting in difficulties in demolding, workpiece surface damage, or accelerated die wear, thus reducing overall processing efficiency and yield.

[0004] In the prior art, Chinese patent document CN221414634U, concerning a stamping die for a sensor housing, proposes that after stamping, the finished product is ejected from the mold cavity by an ejector pin, and then a push plate driven by an electric telescopic rod pushes the workpiece out of the mold. The workpiece finally falls into a collection box, completing automatic material collection. This achieves automatic material discharge and centralized collection, improving production efficiency. However, in practical applications, the above technical solution relies on multiple actuators such as hydraulic cylinders, electric telescopic rods, and telescopic cylinders to complete the ejection and discharge. The structure is complex, the control cost is high, and the adaptability is poor. At the same time, if a demolding lubrication mechanism is not introduced during the use of the stamping die, the die is prone to problems such as sticking, damage, or product scratches during high-frequency stamping. Furthermore, the workpiece does not have a positioning function mentioned during processing, and the workpiece may be displaced during stamping, leading to stamping failure. Utility Model Content

[0005] In view of this, the purpose of this utility model is to propose a stamping die for a sensor housing, so as to solve the problems of inaccurate workpiece positioning, difficulty in demolding, and complex structure of existing stamping dies for sensor housings.

[0006] To achieve the above objectives, this utility model provides a stamping die for a sensor housing, comprising a stamping machine body, an upper die, a lower die, a positioning component, and a demolding component. The upper die is movably installed inside the stamping machine body, and the lower die is fixedly installed inside the stamping machine body.

[0007] A positioning component is disposed inside the body of the stamping machine and is used to guide and fix the position of the pre-processed part placed above the lower die during the stamping process.

[0008] A demolding assembly is provided on one side and inside the lower mold, and is used to apply demolding oil between the pre-processed part and the lower mold during the stamping process to assist in the material removal work after demolding.

[0009] Preferably, the positioning component includes a support tray, which is fixedly installed inside the press body. A limiting plate is rotatably mounted on the support tray. Multiple movable rods are rotatably mounted inside the limiting plate. A limiting plate is fixedly mounted on each movable rod. A slider is rotatably mounted on the other side of each movable rod. A tension spring is fixedly mounted on one side of the slider. The other end of the tension spring is fixed to the support tray. A groove for the slider to slide is provided on the support tray. A threaded rod is threadedly connected to the upper part of the limiting plate. The upper part of the threaded rod is fixedly installed to the lower die. Multiple connecting rods are fixedly mounted on the lower die. A first elastic rod is provided below each connecting rod. The bottom of the first elastic rod is fixed to the support tray. The connecting rod is slidably mounted on the first elastic rod.

[0010] Preferably, the demolding assembly includes an oil supply pipe, which is fixedly connected to one side of the lower mold. The lower mold has multiple oil outlet holes evenly distributed inside. A pressing pump head is fixedly connected to one side of the oil supply pipe, and an oil storage tank is fixedly connected below the pressing pump head. The oil storage tank is fixedly connected to one side of the press body. A second elastic rod is fixedly installed inside the support tray. The oil supply pipe passes through the second elastic rod and is connected to the pressing pump head. A pressure block is fixedly installed on one side of the upper mold.

[0011] Preferably, a top plate is fixedly installed above the body of the stamping machine, and a cylinder is fixedly installed below the top plate, with the other end of the cylinder fixed to the upper mold.

[0012] Preferably, the movable rod is an arc-shaped rod-shaped part, and the limiting plate is an arc-shaped plate-shaped part.

[0013] Preferably, the oil outlet is connected to the oil delivery pipe inside the lower mold.

[0014] Preferably, both the first elastic rod and the second elastic rod are sleeve-type parts with a spring installed on the inner bottom.

[0015] Preferably, the oil pipeline is a flexible hose.

[0016] Preferably, the bottom of the press pump head is directly connected to the bottom of the inner wall of the oil storage tank, and the oil storage tank is provided with an oil inlet for adding release oil.

[0017] Preferably, the oil outlet is a through hole with a small diameter located on the upper edge of the inner wall of the lower mold.

[0018] The beneficial effects of this utility model are:

[0019] 1. The stamping die for the sensor housing utilizes a structure including a limiting disc, movable rods, and a limiting plate to achieve flexible surrounding and automatic resetting of the workpiece. During stamping, the limiting disc rotates in tandem with the die, causing multiple movable rods to conform to the outer contour of the workpiece. This not only adapts to pre-processed parts of different shapes but also prevents positional shifts during the forming process, improving forming consistency and yield. Simultaneously, the slider and tension spring constitute an automatic resetting mechanism, allowing the limiting structure to quickly release the workpiece after stamping, facilitating subsequent material handling or feeding operations.

[0020] 2. This sensor housing stamping die, through the setting of a mechanically driven pressing pump head and pressure block structure, achieves an automatic mold release oil spraying function that is entirely triggered by the movement of the die. Each time the upper die is pressed down, the pressure block synchronously presses the pressing pump head, pumping mold release oil from the oil reservoir and spraying it evenly onto the mold surface and the contact area with the workpiece, forming a lubricating film and effectively preventing mold sticking. The mold release oil spraying process requires no additional electrical control device, is simple in structure, highly synchronized, stable and reliable, and is particularly suitable for high-speed continuous stamping scenarios, effectively extending the die life and ensuring the surface quality of the workpiece. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the positioning and demolding components of this utility model.

[0024] Figure 3This is a schematic diagram of the planar structure of the positioning component of this utility model;

[0025] Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0026] The diagram is marked as follows:

[0027] 1. Press body; 2. Upper die; 3. Lower die; 4. Cylinder; 5. Threaded rod; 6. Support plate; 7. Limiting plate; 8. Movable rod; 9. Limiting plate; 10. Slider; 11. Tension spring; 12. Slide groove; 13. Connecting rod; 14. First elastic rod; 15. Oil supply pipe; 16. Press pump head; 17. Oil reservoir; 18. Pressure block; 19. Second elastic rod; 20. Oil outlet; 21. Top plate. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0029] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0030] like Figures 1 to 4 As shown, a sensor housing stamping die includes a stamping machine body 1, an upper die 2, a lower die 3, a positioning component, and a demolding component. The upper die 2 is movably installed inside the stamping machine body 1, and the lower die 3 is fixedly installed inside the stamping machine body 1. A top plate 21 is fixedly installed above the stamping machine body 1, and a cylinder 4 is fixedly installed below the top plate 21. The other end of the cylinder 4 is fixed to the upper die 2. The stamping machine body 1 provides a stable installation platform for the entire system, ensuring the overall rigidity of the die operation. The fixed connection between the top plate 21 and the cylinder 4 enables the upper die 2 to have good vertical guidance during the stamping process, improving processing accuracy.

[0031] Furthermore, such as Figures 1 to 3As shown, the positioning component, located inside the press body 1, guides and fixes the position of the pre-processed part placed above the lower die 3 during the stamping process. It includes a support tray 6, which is fixedly installed inside the press body 1. A limiting plate 7 is rotatably mounted on the support tray 6. Multiple movable rods 8 are rotatably mounted inside the limiting plate 7. A limiting plate 9 is fixedly mounted on each movable rod 8. A slider 10 is rotatably mounted on the other side of each movable rod 8. A tension spring 11 is fixedly mounted on one side of the slider 10, and the other end of the tension spring 11 is fixed to the support tray 6. The support tray 6 has a groove 12 for the slider 10 to slide. A threaded rod 5 is threadedly connected to the upper part of the limiting plate 7. The upper part of the threaded rod 5 is fixedly mounted to the lower die 3. Multiple connecting rods 13 are fixedly installed, and a first elastic rod 14 is provided below the connecting rod 13. The bottom of the first elastic rod 14 is fixed to the support plate 6. The connecting rod 13 is slidably installed on the first elastic rod 14. The movable rod 8 is an arc-shaped rod part, and the limiting plate 9 is an arc-shaped plate part. The positioning assembly is arranged as a whole inside the press body 1, with a compact structure and easy integration. The support plate 6 serves as a bearing base and is firmly installed inside the press body 1, providing stable support for subsequent limiting and positioning actions. The limiting plate 7 is rotatably installed on the support plate 6, which can drive multiple movable rods 8 to move in coordination to achieve a surrounding workpiece limiting. The movable rod 8 adopts an arc-shaped rod design, which, together with the arc-shaped limiting plate 9, can surround and fit pre-processed parts with complex shapes to achieve Flexible limiting and rapid positioning: The slider 10, in conjunction with the tension spring 11, moves through the guide groove 12, forming an automatic return mechanism for the limiting plate 9. This simplifies the operation process and improves efficiency. The threaded rod 5 connects to the limiting plate 7 and the lower die 3, enabling linkage during stamping and enhancing limiting accuracy. The connecting rod 13 connects the lower die 3 to the first elastic rod 14, providing elastic buffering when the workpiece is subjected to force or pressure, preventing workpiece displacement or damage caused by instantaneous impact, and preventing positional displacement caused by rotation of the lower die 3. The bottom of the first elastic rod 14 is fixed to the support plate 6, further stabilizing the positioning mechanism and improving the consistency of die matching. The limiting plate 9 can be effectively fixed when the workpiece is pressed, and automatically resets after stamping by the tension spring 11 and the slider 10, which helps the workpiece... The rapid release and relative sliding between the connecting rod 13 and the first elastic rod 14 create an initial displacement for the workpiece to be demolded, facilitating subsequent ejection or push-out mechanism actions. When using this stamping die, the operator or automatic feeding device first places the pre-processed part in the processing area of ​​the lower die 3. The cylinder 4 is activated, driving the upper die 2 to press down from the top plate 21. During the pressing process, the lower die 3 drives the threaded rod 5 to rotate the linkage limiting plate 7, causing multiple movable rods 8 to synchronously limit the workpiece inwards. The movable rods 8 drive the limiting plate 9 to further conform to the outer contour of the workpiece, achieving stable positioning. Simultaneously, the lower die 3, through the fixed connecting rod 13 and the first elastic rod 14, forms a downward buffer, allowing it to sink slightly. The upper die 2 completes the stamping process, and the workpiece is finished.Then, the upper mold 2 is lifted, driven by the retraction of the cylinder 4. The tension spring 11 automatically pulls the slider 10 back to its original position. The slider 10 slides, causing the movable rod 8 to rotate back to its initial position, causing the limit plate 9 to retract and release the workpiece.

[0032] Furthermore, such as Figures 1 to 4As shown, the demolding assembly is located on one side and inside the lower mold 3. It is used to apply demolding oil between the pre-processed part and the lower mold 3 during the stamping process, assisting in the unloading work after demolding. It includes an oil supply pipe 15, which is fixedly connected to one side of the lower mold 3. Multiple oil outlet holes 20 are evenly opened inside the lower mold 3. A pressing pump head 16 is fixedly connected to one side of the oil supply pipe 15. An oil storage tank 17 is fixedly connected below the pressing pump head 16. The oil storage tank 17 is fixedly connected to one side of the stamping machine body 1. A second elastic rod 19 is fixedly installed inside the support tray 6. The oil supply pipe 15 passes through the second elastic rod 19 and is connected to the pressing pump head 16. A pressure block 18 is fixedly installed on one side of the upper mold 2. The oil outlet holes 20 and the oil supply pipe 15 are inside the lower mold 3. The components are connected. The first elastic rod 14 and the second elastic rod 19 are both sleeve-type parts with springs installed on their inner bottom. The oil supply pipe 15 is an elastic hose. The bottom of the press pump head 16 is directly connected to the bottom of the inner wall of the oil storage tank 17. The oil storage tank 17 has an oil inlet for adding release oil. The oil outlet 20 is a through hole with a small diameter located on the upper edge of the inner wall of the lower mold 3. The oil supply pipe 15 is an elastic hose with good flexibility and deformation adaptability, which can adapt to the complex path arrangement inside and outside the mold and reduce the risk of pipe damage or leakage caused by stamping vibration. The press pump head 16 is mechanically connected to the oil storage tank 17 and driven by the pressure block 18. It is triggered by the periodic downward pressure of the upper mold 2 to realize the fully mechanical release oil pumping action without the need for additional Electrical or manual operation improves system stability and automation. The pressure block 18 is installed on the side of the upper mold 2, synchronously triggering the pump head 16 with the stamping motion. It utilizes the motion energy of the main unit to drive the demolding oil pump. The structure is simple, responsive, and fully utilizes existing motion without requiring a new drive source. Oil outlets 20 are evenly distributed on the upper edge of the inner wall of the lower mold 3 and connected to the oil supply pipe 15, allowing for uniform demolding oil application before or during stamping. This effectively prevents workpiece adhesion to the mold, improves demolding smoothness, and reduces mold wear. The oil storage tank 17 is located on one side of the stamping machine body 1 for easy refueling, maintenance, and cleaning. Its bottom is connected to the pump head 16; gravity-assisted pumping helps stabilize oil delivery and ensures continuous oil supply. (The text also mentions a support tray, but this seems unrelated to the main topic.) A second elastic rod 19 is installed inside the 6th layer to support the vertical position of the oil supply system. It works in conjunction with the oil supply pipe 15 to provide shock absorption, buffering, and reset, ensuring stable and reliable recovery after pressing. The oil injection port is located on the upper part of the oil storage tank 17 for quick replenishment of the release oil, supporting rapid maintenance during continuous operation and improving mold working efficiency. The overall system structure requires no electrical control; the release oil spraying and reset are automatically triggered by the upper mold pressing action, forming a closed-loop, synchronized, and energy-saving auxiliary system. It is particularly suitable for high-frequency stamping production scenarios, improving demolding efficiency and protecting the surface integrity of the workpiece. Before use, release oil is added to the oil storage tank 17 through the oil injection port. The oil is stored internally and connected to the pressing pump head 16.When the upper die 2 of the press machine body 1 moves downward while in standby mode, the pressure block 18 installed on one side of it gradually contacts and presses down on the pump head 16. The pump head 16 is compressed under the action of the pressure block 18, generating positive pressure inside. This pumps the release oil at the bottom of the oil storage tank 17 into the mold through the oil supply pipe 15. The release oil enters the lower die 3 through the oil supply pipe 15 and is evenly sprayed out through multiple oil outlets 20 distributed on the upper edge of the inner wall, covering the surface of the contact area between the pre-processed part and the mold, forming an effective release oil film. With sufficient lubrication, the upper mold 2 continues to press down to complete the stamping process, reducing adhesion or wear between the mold and the workpiece, and improving the forming quality. After the stamping operation ends, the upper mold 2 is lifted, and the pressure block 18 disengages from the pump head 16. At this time, the spring inside the second elastic rod 19 elastically recovers, causing the oil supply pipe 15 and the pump head 16 to automatically spring back to their initial state. Before the next stamping, the oil reservoir 17 supplies oil to the pump head 16 again. The entire system completes one closed-loop mechanical drive, metered oil injection, and automatic reset cycle.

[0033] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0034] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A sensor housing press forming die characterized by, include: The press body (1), upper mold (2), lower mold (3), positioning component and demolding component are provided. The upper mold (2) is movably installed inside the press body (1), and the lower mold (3) is fixedly installed inside the press body (1). A positioning component is provided inside the body of the stamping machine (1) to guide and fix the position of the pre-processed part placed above the lower die (3) during the stamping process; A demolding assembly is provided on one side and inside the lower mold (3) to apply demolding oil between the pre-processed part and the lower mold (3) during the stamping process, and to assist in the material removal work after demolding.

2. The sensor housing press forming die according to claim 1, wherein The positioning assembly includes a support tray (6), which is fixedly installed inside the press body (1). A limiting plate (7) is rotatably installed on the support tray (6). Multiple movable rods (8) are rotatably installed inside the limiting plate (7). A limiting plate (9) is fixedly installed on the movable rods (8). A slider (10) is rotatably installed on the other side of the movable rods (8). A tension spring (11) is fixedly installed on one side of the slider (10). The other end of the tension spring (11) is fixed to the support tray (6). The support tray (6) is provided with a groove (12) for the slider (10) to slide. A threaded rod (5) is threadedly connected to the upper part of the limiting plate (7). The upper part of the threaded rod (5) is fixedly installed with the lower mold (3). A plurality of connecting rods (13) are fixedly installed on the lower mold (3). A first elastic rod (14) is provided below the connecting rod (13). The bottom of the first elastic rod (14) is fixed with the support tray (6). The connecting rod (13) is slidably installed on the first elastic rod (14).

3. The sensor housing press forming die of claim 2, wherein, The demolding assembly includes an oil supply pipe (15), which is fixedly connected to one side of the lower mold (3). The lower mold (3) has a plurality of oil outlet holes (20) evenly distributed inside. A pressing pump head (16) is fixedly connected to one side of the oil supply pipe (15). An oil storage tank (17) is fixedly connected below the pressing pump head (16). The oil storage tank (17) is fixedly connected to one side of the stamping machine body (1). A second elastic rod (19) is fixedly installed inside the support tray (6). The oil supply pipe (15) passes through the second elastic rod (19) and is connected to the pressing pump head (16). A pressure block (18) is fixedly installed on one side of the upper mold (2).

4. The sensor housing press forming die of claim 3, wherein, A top plate (21) is fixedly installed above the main body (1) of the stamping machine, and a cylinder (4) is fixedly installed below the top plate (21). The other end of the cylinder (4) is fixed to the upper mold (2).

5. The sensor housing press forming die of claim 3, wherein, The movable rod (8) is an arc-shaped rod-shaped part, and the limiting plate (9) is an arc-shaped plate-shaped part.

6. The sensor housing press forming die of claim 3, wherein, The oil outlet (20) and the oil delivery pipe (15) are connected inside the lower mold (3).

7. The sensor housing press forming die of claim 3, wherein, Both the first elastic rod (14) and the second elastic rod (19) are sleeve-type parts with springs installed on their inner bottom.

8. The sensor housing press forming die of claim 3, wherein, The oil pipeline (15) is a flexible hose.

9. The sensor housing press forming die of claim 3, wherein, The bottom of the press pump head (16) is directly connected to the bottom of the inner wall of the oil storage tank (17), and the oil storage tank (17) is provided with an oil injection port for adding release oil.

10. A sensor housing stamping die according to claim 3, characterized in that, The oil outlet (20) is a through hole with a small diameter located on the upper edge of the inner wall of the lower mold (3).

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