A mold for a leaf spring seat assembly with demolding assistance

Abstract

This utility model discloses a steel plate spring seat assembly mold with demolding assistance, including a base plate. A lower mold is fixedly connected to the upper end of the base plate, and multiple fixing rods are fixedly connected to the upper end of the base plate. A mounting plate is fixedly connected to the upper end of the multiple fixing rods. A cylinder is mounted on the upper end of the mounting plate, and the output end of the cylinder passes through the mounting plate and is fixedly connected to an upper mold. An ejection groove is formed in the lower mold, and two ejection plates are arranged in the ejection groove. Two ejection rods are fixedly connected to the lower ends of the two ejection plates. Two fixing plates are fixedly connected to the inner walls on both sides of the ejection groove. This design, featuring ejection rods, a first spring, and a cam, enables uniform pushing of the product. Simultaneously, the spring buffer prevents excessive localized force during pushing, preventing product deformation and cracking, ensuring product quality, and improving demolding stability.

Description

Technical Field

[0001] This utility model relates to the technical field of leaf spring seat assembly, and in particular to a leaf spring seat assembly mold with demolding assistance. Background Technology

[0002] In the automotive suspension system, the leaf spring seat assembly is a key core component connecting the vehicle frame and the leaf spring. It needs to bear the weight of the vehicle body, buffer road impacts, and ensure the stable transmission of the suspension system. Therefore, it has extremely high requirements for the structural strength, dimensional accuracy, and assembly adaptability of the assembly. The leaf spring seat assembly needs to be processed and manufactured using molds during production. However, when demolding products, the process often relies on a single ejector pin. When a single ejector pin is used, the pushing force is concentrated in a localized area in contact with the ejector pin, which can easily lead to uneven stress on the product, resulting in deformation, cracks, and other damage, seriously affecting product quality. Therefore, we need to consider how to solve this problem. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a steel plate spring seat assembly mold with demolding assistance. It is equipped with structures such as an ejector rod, a first spring, and a cam, which can achieve uniform pushing of the product. At the same time, the spring buffer avoids excessive local force during pushing, prevents product deformation and cracks, ensures product quality, and improves demolding stability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A mold for a steel leaf spring seat assembly with demolding assistance includes a base plate. A lower mold is fixedly connected to the upper end of the base plate. Multiple fixing rods are fixedly connected to the upper end of the base plate. A mounting plate is fixedly connected to the upper end of the multiple fixing rods. A cylinder is mounted on the upper end of the mounting plate. The output end of the cylinder passes through the mounting plate and is fixedly connected to an upper mold. An ejection groove is formed in the lower mold. Two ejection plates are arranged in the ejection groove. Two ejection rods are fixedly connected to the lower ends of the two ejection plates. Two fixing plates are fixedly connected to the inner walls on both sides of the ejection groove. The lower end of each ejection rod passes through the corresponding fixing plate. A first spring is sleeved on the outer wall of each ejection rod. The two ends of each first spring are elastically connected to the lower end of the corresponding ejection plate and the upper end of the fixing plate, respectively. Two drive shafts are rotatably connected between the inner walls on both sides of the ejection groove. Two cams are fixedly connected to the outer walls of the two drive shafts. Each cam cooperates with the corresponding ejection rod.

[0005] Preferably, a motor is installed on the outer wall of the lower mold, and the end of the output shaft of the motor extends into the ejection groove and is fixedly connected to one end of one of the drive shafts.

[0006] Preferably, the other ends of both drive shafts extend to the outside and are fixedly connected to drive wheels, and the two drive wheels are connected by a drive belt.

[0007] Preferably, two guide rods are fixedly connected to the upper end of the base plate, and the upper ends of the two guide rods are fixedly connected to the lower end of the mounting plate. Two movable plates are fixedly connected to the upper end of the upper mold, and the two movable plates are slidably connected to the corresponding guide rods.

[0008] Preferably, both sides of the upper mold are fixedly connected to connecting plates, and two sliding rods are provided through each of the two connecting plates. Each sliding rod is slidably connected to the corresponding connecting plate, and a limit plate is fixedly connected to the upper end of each sliding rod.

[0009] Preferably, the lower ends of each pair of cooperating sliding rods are fixedly connected to a pressure plate, and the outer wall of each sliding rod is fitted with a second spring. The two ends of each second spring are elastically connected to the lower end of the corresponding connecting plate and the upper end of the pressure plate, respectively.

[0010] Compared with the prior art, the advantages of this utility model are as follows: 1. The structure includes an ejector plate, a first spring, and cams. The transmission wheel and belt drive the double cams to rotate synchronously, which, together with the ejector plate, achieves multi-point uniform ejection of the product, avoiding localized force concentration caused by single ejection. At the same time, the first spring can drive the ejector plate to automatically reset after demolding, and the cooperation between the ejector plate and the spring can buffer the ejection force, ensure product quality, and improve the stability of the demolding process. 2. The structure includes a sliding rod, a pressure plate, and a second spring. Before mold closing, the pressure plate is pushed by the elastic force of the second spring to press the blank tightly, preventing the blank from shifting during mold closing. At the same time, the sliding rod can be used to adjust the position of the pressure plate by moving the upper mold downward, ensuring continuous and stable pressing during mold closing, improving product molding accuracy, and reducing defective products caused by blank displacement. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a steel leaf spring seat assembly mold with demolding assistance proposed in this utility model; Figure 2 for Figure 1 A schematic diagram of the front cross-section; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 for Figure 1 A schematic diagram of the right-side cross-section; Figure 5 for Figure 4 Enlarged view of point B; Figure 6for Figure 1 The diagram on the left; Figure 7 for Figure 1 The diagram on the right.

[0012] In the diagram: 1. Base plate, 2. Lower mold, 3. Fixing rod, 4. Mounting plate, 5. Cylinder, 6. Upper mold, 7. Ejection slot, 8. Ejection plate, 9. Ejection rod, 10. Fixing plate, 11. First spring, 12. Drive shaft, 13. Cam, 14. Motor, 15. Drive wheel, 16. Drive belt, 17. Guide rod, 18. Moving plate, 19. Connecting plate, 20. Sliding rod, 21. Limiting plate, 22. Pressure plate, 23. Second spring. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Reference Figures 1-7 A mold for a steel leaf spring seat assembly with demolding assistance includes a base plate 1. A lower mold 2 is fixedly connected to the upper end of the base plate 1. Multiple fixing rods 3 are fixedly connected to the upper end of the base plate 1. A mounting plate 4 is fixedly connected to the upper end of the multiple fixing rods 3. A cylinder 5 is mounted on the upper end of the mounting plate 4. The output end of the cylinder 5 passes through the mounting plate 4 and is fixedly connected to an upper mold 6. An ejection groove 7 is opened in the lower mold 2. Two ejection plates 8 are arranged in the ejection groove 7. When the two ejection plates 8 are in the initial position, their upper surfaces are flush with the upper surface of the lower mold 2, which does not affect the molding of the product. The upper surface is provided with a rubber layer, which can buffer and protect the product during the ejection process, prevent the product from deforming due to uneven force, and increase the friction between the ejection plate 8 and the product. The lower ends of the two ejection plates 8 are fixedly connected to two ejection rods 9. The inner walls of both sides of the ejection groove 7 are fixedly connected to two fixing plates 10. The lower end of each ejection rod 9 passes through the corresponding fixing plate 10. The outer wall of each ejection rod 9 is fitted with a first spring 11. The two ends of each first spring 11 are elastically connected to the lower end of the corresponding ejection plate 8 and the upper end of the fixing plate 10, respectively. Two drive shafts 12 are rotatably connected between the inner walls of the two sides of the ejector groove 7. Two cams 13 are fixedly connected to the outer walls of the two drive shafts 12. Each cam 13 cooperates with the corresponding ejector rod 9. The lower end face of each ejector rod 9 is an arc surface. A motor 14 is installed on the outer wall of the lower mold 2. The motor 14 is a servo motor. The end of the output shaft of the motor 14 extends into the ejector groove 7 and is fixedly connected to one end of one of the drive shafts 12. The other ends of the two drive shafts 12 extend to the outside and are fixedly connected to drive wheels 15. The two drive wheels 15 are connected by a drive belt 16. The motor 14 drives one drive shaft 12 to rotate, and the drive wheels 15 and the drive belt 16 drive the other drive shaft 12 to rotate. The cams 13 rotate with the drive shafts 12, lifting the ejector rod 9, so that the ejector plate 8 rises and ejects the product. After demolding, the first spring 11 drives the ejector plate 8 to reset, which does not affect the next molding. Two guide rods 17 are fixedly connected to the upper end of the base plate 1. The upper ends of the two guide rods 17 are fixedly connected to the lower end of the mounting plate 4. Two movable plates 18 are fixedly connected to the upper end of the upper mold 6. The two movable plates 18 are slidably connected to the corresponding guide rods 17. The upper mold 6 slides up and down along the guide rods 17 via the movable plates 18 to ensure that the upper mold 6 and the lower mold 2 are closed, avoiding misalignment that could affect product accuracy. Connecting plates 19 are fixedly connected to both side walls of the upper mold 6. Two sliding rods 20 are provided through each connecting plate 19. Each sliding rod 20 is slidably connected to the corresponding connecting plate 19. The upper end of each sliding rod 20... Each sliding rod 20 is fixedly connected to a limiting plate 21. The lower ends of each pair of sliding rods 20 are fixedly connected to a pressure plate 22. The lower end surfaces of the two pressure plates 22 are provided with anti-slip textures. The outer wall of each sliding rod 20 is fitted with a second spring 23. The two ends of each second spring 23 are elastically connected to the lower end of the corresponding connecting plate 19 and the upper end of the pressure plate 22, respectively. Before the mold is closed, the pressure plate 22 presses the blank material under the elastic force of the second spring 23. When the mold is closed, the upper mold 6 presses down and drives the connecting plate 19 to move down. The sliding rod 20 slides relative to the connecting plate 19, and the pressure plate 22 remains in a pressed state to prevent the blank material from shifting and causing the product to be scrapped.

[0015] In this utility model, during operation, the blank of the steel plate spring seat assembly is first placed on the upper end face of the lower mold 2, and then the cylinder 5 is started to drive the upper mold 6 to move downward, thereby causing the two moving plates 18 to move downward along the corresponding guide rods 17. During the mold closing process, the two pressure plates 22 first come into contact with the blank. As the upper mold 6 continues to move downward, the sliding rod 20 slides upward relative to the connecting plate 19. The second spring 23 is compressed and generates elastic force, so that the pressure plates 22 always press the blank tightly to prevent the blank from shifting during mold closing. When the upper mold 6 and the lower mold 2 are completely closed, the blank forming process is completed. After molding is completed, cylinder 5 drives upper mold 6 to reset upward. At this time, motor 14 is started, which drives one of the transmission shafts 12 to rotate. This transmission shaft 12 drives the other transmission shaft 12 to rotate synchronously through the cooperation of transmission wheel 15 and transmission belt 16. Cams 13 on the two transmission shafts 12 rotate with the shafts. During the rotation, cams 13 push the corresponding ejector rod 9, so that the ejector rod 9 drives the ejector plate 8 to move upward, thereby removing the molded product from lower mold 2. After demolding, the motor 14 drives the transmission shaft 12 to rotate in the opposite direction, the cam 13 disengages from the push of the ejector rod 9, and the ejector rod 9 drives the ejector plate 8 to return to its original position under the elastic force of the first spring 11 until the upper end surface of the ejector plate 8 is flush with the upper end surface of the lower mold 2, thus preparing for the next molding process, and thus completing one complete mold working cycle.

[0016] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mold for a steel leaf spring seat assembly with demolding assistance, comprising a base plate (1), characterized in that, The upper end of the base plate (1) is fixedly connected to the lower mold (2), and the upper end of the base plate (1) is fixedly connected to multiple fixing rods (3). The upper ends of the multiple fixing rods (3) are fixedly connected to a mounting plate (4). A cylinder (5) is installed on the upper end of the mounting plate (4). The output end of the cylinder (5) passes through the mounting plate (4) and is fixedly connected to the upper mold (6). An ejection groove (7) is opened in the lower mold (2). Two ejection plates (8) are arranged in the ejection groove (7). Two ejection rods (9) are fixedly connected to the lower ends of the two ejection plates (8). The two sides of the ejection groove (7) are... Two fixed plates (10) are fixedly connected to the inner wall. The lower end of each ejector rod (9) passes through the corresponding fixed plate (10). A first spring (11) is sleeved on the outer wall of each ejector rod (9). The two ends of each first spring (11) are elastically connected to the lower end of the corresponding ejector plate (8) and the upper end of the fixed plate (10), respectively. Two transmission shafts (12) are rotatably connected between the inner walls on both sides of the ejector groove (7). Two cams (13) are fixedly connected to the outer walls of the two transmission shafts (12). Each cam (13) cooperates with the corresponding ejector rod (9).

2. The mold for a steel leaf spring seat assembly with demolding assistance according to claim 1, characterized in that, A motor (14) is installed on the outer wall of the lower mold (2). The output shaft of the motor (14) extends into the ejector groove (7) and is fixedly connected to one end of one of the drive shafts (12).

3. The mold for a steel leaf spring seat assembly with demolding assistance according to claim 2, characterized in that, The other ends of the two drive shafts (12) extend to the outside and are fixedly connected to drive wheels (15), which are connected by a drive belt (16).

4. The mold for a steel leaf spring seat assembly with demolding assistance according to claim 1, characterized in that, The upper end of the base plate (1) is fixedly connected to two guide rods (17), and the upper ends of the two guide rods (17) are fixedly connected to the lower end of the mounting plate (4). The upper end of the upper mold (6) is fixedly connected to two movable plates (18), and the two movable plates (18) are slidably connected to the corresponding guide rods (17).

5. A mold for a steel leaf spring seat assembly with demolding assistance according to claim 1, characterized in that, The upper mold (6) has two connecting plates (19) fixedly connected to both sides. Two sliding rods (20) are provided through the two connecting plates (19). Each sliding rod (20) is slidably connected to the corresponding connecting plate (19). Each sliding rod (20) has a limit plate (21) fixedly connected to its upper end.

6. A mold for a steel leaf spring seat assembly with demolding assistance according to claim 5, characterized in that, The lower ends of each pair of sliding rods (20) are fixedly connected to a pressure plate (22). The outer wall of each sliding rod (20) is fitted with a second spring (23). The two ends of each second spring (23) are elastically connected to the lower end of the corresponding connecting plate (19) and the upper end of the pressure plate (22).

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