Multi-station composite machining device for automobile fastener cold heading die

Abstract

The utility model relates to cold heading forming technical field discloses a kind of multi-station composite processing device of automobile fastener cold heading die, including first guide plate, and the first guide plate rear side bottom is fixedly connected between base front side surface, the servo motor is fixedly connected with the left side top of base, the transmission arm is fixedly provided in the servo motor output end, the first straight rack is fixedly connected with the first guide plate rear side bottom, the first straight rack top is meshedly connected with first gear and second gear, the second straight rack is meshedly connected with the first gear top, the second straight rack top is fixedly connected with connecting plate, in the utility model, servo motor drives transmission arm to drive first gear and second gear to move, and then drive moving plate to move along first straight rack direction, make the die being set in the top of moving plate can be moved to and fro along first straight rack, to be able to realize the continuous processing of automobile fastener cold heading die.

Description

Technical Field

[0001] This utility model relates to the field of cold heading technology, and in particular to a multi-station composite processing device for cold heading molds of automotive fasteners. Background Technology

[0002] Automotive fastener cold heading dies utilize the cold heading process to apply pressure to metal blanks at room temperature to plastically deform them, thereby completing the forming process of fasteners. Their structure typically includes a workpiece conveying system, a processing module, a power transmission mechanism, and an automated control system.

[0003] Traditional equipment may require manual intervention for billet transfer or workstation switching. Workstation switching may require machine shutdown for adjustment, making it difficult to achieve continuous production. This not only reduces production efficiency but also increases equipment energy consumption and failure risk. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a multi-station composite processing device for cold heading dies of automotive fasteners, aiming to improve the problem of poor station switching capability of existing devices affecting production efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-station composite processing device for cold heading molds of automotive fasteners, comprising a first guide plate, the bottom rear side of the first guide plate being fixedly connected to the front surface of a base, a servo motor being fixedly connected to the top left side of the base, a transmission arm being fixedly provided at the output end of the servo motor, a first spur rack being fixedly connected to the bottom rear side of the first guide plate, a first gear and a second gear being meshed at the top of the first spur rack, a second spur rack being meshed at the top of the first gear, a connecting plate being fixedly connected to the top of the second spur rack, the connecting plate being slidably connected to both the first guide plate and the second guide plate, a second guide plate being fixedly connected to the rear side of the base, a hydraulic press being fixedly connected to the rear side of the second guide plate, and a moving mechanism being provided on the surface of the second guide plate.

[0006] Preferably, the moving mechanism includes a moving plate, which is slidably connected to the inner wall of the front side of the second guide plate. A forming mold is fixedly connected to the surface of the moving plate. Mold positioning grooves are provided on both the front and rear sides of the top of the moving plate. An ejection groove is provided on the middle side surface of the moving plate. An ejector pin is slidably connected to the inner wall of the ejection groove. The moving plate is fixedly connected to the connecting plate.

[0007] Preferably, the ejector pin is slidably connected to the inner wall of the top of the base, and the ejector pin is slidably connected to the inner wall of the molding die.

[0008] Preferably, a connecting strip is rotatably connected to the surface of the first gear, the left side of the connecting strip is rotatably connected to the second gear, and the transmission arm is rotatably connected to the connecting strip.

[0009] Preferably, the top of the second gear is meshed with the bottom surface of the second spur rack, and the front surface of the second spur rack is in contact with the rear surface of the first guide plate.

[0010] Preferably, a slide rod is slidably connected to the inner wall of the hydraulic press, a pressing slider is fixedly connected to the bottom of the slide rod, and a punch is fixedly connected to the bottom of the pressing slider.

[0011] Preferably, a cylinder is provided on the inner wall of the top of the base, and a gripper is slidably connected to the inner wall of the cylinder.

[0012] Preferably, a primary upsetting mold is fixedly connected to the left side surface of the movable plate, and the ejector pin is slidably connected to the inner wall of the primary upsetting mold.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, a servo motor drives the transmission arm to move the first gear and the second gear. The first gear and the second gear mesh with the first and second straight racks, driving the moving plate to move along the direction of the first straight rack. This allows the mold set on the top of the moving plate to move back and forth along the first straight rack, thereby realizing the continuous processing of automotive fastener cold heading molds.

[0015] 2. In this utility model, the top surface of the movable plate is provided with a mold positioning groove and an ejection groove. The initial upsetting mold and the forming mold are fixed to the surface of the movable plate by bolts, so that the device has good mold replacement capability. The ejector pin ejects the blank upward through the ejection groove, avoiding interference with the action of the gripper, which may lead to blank damage or equipment failure. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a multi-station composite processing device for cold heading molds of automotive fasteners proposed in this utility model.

[0017] Figure 2 This is a cross-sectional schematic diagram of a multi-station composite processing device for cold heading dies of automotive fasteners proposed in this utility model;

[0018] Figure 3 This is a partial schematic diagram of a multi-station composite processing device for cold heading dies of automotive fasteners proposed in this utility model;

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0020] Legend:

[0021] 1. First guide plate; 2. Base; 3. Servo motor; 4. Transmission arm; 5. First gear; 6. First spur rack; 7. Second spur rack; 8. Hydraulic press; 9. Slide bar; 10. Punch; 11. Second gear; 12. Second guide plate; 13. Pressing slider; 14. Initial upsetting mold; 15. Forming mold; 16. Moving plate; 17. Mold positioning groove; 18. Ejector pin; 19. Gripper; 20. Ejection groove; 21. Connecting plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 1-3 An embodiment of this utility model provides a multi-station composite processing device for cold heading molds of automotive fasteners, including a first guide plate 1, the bottom rear side of the first guide plate 1 is fixedly connected to the front surface of the base 2, a servo motor 3 is fixedly connected to the top left side of the base 2, a transmission arm 4 is fixedly provided at the output end of the servo motor 3, a first spur rack 6 is fixedly connected to the bottom rear side of the first guide plate 1, a first gear 5 and a second gear 11 are meshed at the top of the first spur rack 6, a second spur rack 7 is meshed at the top of the first gear 5, a connecting plate 21 is fixedly connected to the top of the second spur rack 7, the connecting plate 21 is slidably connected to both the first guide plate 1 and the second guide plate 12, a second guide plate 12 is fixedly connected to the rear side of the base 2, a hydraulic press 8 is fixedly connected to the rear side of the second guide plate 12, and a moving mechanism is provided on the surface of the second guide plate 12;

[0024] The first guide plate 1, the second guide plate 12 and the base 2 are fixedly connected to form the support structure of the device, providing a stable installation foundation for each structure of the device. The servo motor 3 on the top left side of the base 2 serves as the power source for the transmission arm 4, enabling the transmission arm 4 to convert rotational motion into linear transmission. Through the synchronous meshing of the double gears and the rack, the rotational motion of the gears is converted into linear motion, realizing the control of the motion distance during the transmission process. The motion is transmitted to the moving mechanism through the connecting plate 21 fixed at the top. Both the first guide plate 1 and the second guide plate 12 are equipped with linear guide rails to ensure that the linear motion trajectory is maintained during the transmission process of the connecting plate 21, reducing lateral offset and motion resistance.

[0025] Reference Figures 3-4The moving mechanism includes a moving plate 16, which is slidably connected to the inner wall of the front side of the second guide plate 12. A forming mold 15 is fixedly connected to the surface of the moving plate 16. Mold positioning grooves 17 are provided on both the front and rear sides of the top of the moving plate 16. An ejection groove 20 is provided on the middle side surface of the moving plate 16. An ejector pin 18 is slidably connected to the inner wall of the ejection groove 20. The moving plate 16 is fixedly connected to the connecting plate 21.

[0026] The movement trajectory of the movable plate 16 is precisely controlled by the meshing transmission of the first gear 5 and the second gear 11 with the first spur rack 6 and the second spur rack 7. The sliding connection between it and the inner wall of the front side of the second guide plate 12 adopts a dovetail groove guide rail structure, which can effectively withstand the lateral impact force and vibration load generated during the cold heading process. The mold positioning groove 17 and bolts can realize the positioning and rigid fixation of the mold, and at the same time facilitate the adjustment of the mold position to ensure the consistency of mold installation after mold change.

[0027] Reference Figure 4 The ejector pin 18 is slidably connected to the inner wall of the top of the base 2, and is slidably connected to the inner wall of the forming mold 15. The movement of the ejector pin 18 is controlled by the hydraulic drive system integrated inside the base 2. By adjusting the oil pressure through the proportional valve, the movement speed and thrust of the ejector pin 18 can be adjusted to meet the ejection requirements of blanks of different specifications.

[0028] Reference Figure 2 The first gear 5 is rotatably connected to a connecting bar, which is rotatably connected to the second gear 11 on the left side. The transmission arm 4 is rotatably connected to the connecting bar. The first gear 5 and the second gear 11 are connected together by the connecting bar. The connecting bar has an I-shaped cross-section, which can reduce its own rotational inertia and increase the transmission speed while ensuring sufficient bending strength.

[0029] Reference Figure 2 The top of the second gear 11 meshes with the bottom surface of the second spur rack 7. The front surface of the second spur rack 7 is in contact with the rear surface of the first guide plate 1. The structure of the front surface of the second spur rack 7 being in contact with the rear surface of the first guide plate 1 provides auxiliary guidance for the second spur rack 7. At the same time, an elastic buffer layer is provided between the contact surfaces to reduce component wear.

[0030] Reference Figure 1 The inner wall of the hydraulic press 8 is slidably connected to a slide rod 9. The bottom of the slide rod 9 is fixedly connected to a pressing slider 13. The bottom of the pressing slider 13 is fixedly connected to a punch 10. The fixed connection between the bottom of the slide rod 9 and the pressing slider 13 is achieved by a combination of bolts and positioning pins. The positioning pins achieve circumferential positioning, ensuring that the pressing slider 13 is installed at an accurate angle. The bolts enhance the axial tensile force that the connection structure can withstand.

[0031] Reference Figures 3-4A cylinder is installed on the inner wall of the top of the base 2. A gripper 19 is slidably connected to the inner wall of the cylinder. The gripper 19 is connected to the piston rod inside the cylinder. The extension of the gripper 19 is controlled by the piston rod. The opening and closing action of the gripper 19 is controlled by a solenoid valve, which helps to achieve accurate timing control of the gripper 19 from clamping to releasing.

[0032] Reference Figure 3 The primary upsetting die 14 is fixedly connected to the left side surface of the moving plate 16. The ejector pin 18 is slidably connected to the inner wall of the primary upsetting die 14. The ejector pin 18 is linked with the gripper 19 to realize the automatic ejection and clamping of the blank, which improves the processing efficiency and safety of the device. The device drives the die to move through the servo motor 3 and is linked with the punch 10 to press down, realizing continuous processing from primary upsetting to secondary upsetting. Fastener forming can be completed without stopping the machine, thereby improving production efficiency.

[0033] Working principle: After the initial upsetting die 14 and the corresponding top punch 10 are pressed together, the servo motor 3 controls the transmission arm 4 to rotate. Through the engagement of the first gear 5 and the second gear 11 with the first spur rack 6 and the second spur rack 7, the second spur rack 7 is driven to move to the right along the direction of the first spur rack 6. This causes the initial upsetting die 14, which is fixed on the top of the moving plate 16, and the internal pre-processed blank to move together to the rightmost side. At this time, the ejector pin 18 is ejected, and the cylinder driven gripper 19 on the top of the base 2 extends to clamp the pre-processed blank. The servo motor 3 drives the transmission arm 4 to move the moving plate. 16 moves to the left, and punch 10 moves down to fit against the top of the pre-processed blank. After the gripper 19 retracts and releases the fit against the pre-processed blank, punch 10 continues to press down to perform secondary upsetting to form the pre-processed blank. This realizes continuous processing of automotive fastener cold upsetting dies, reduces waiting time during processing, and greatly improves overall processing efficiency. The top surface of the moving plate 16 is provided with a die positioning groove 17 and an ejection groove 20. The pre-upsetting die 14 and the forming die 15 are fixed to the surface of the moving plate 16 by bolts, giving the device good die replacement capability.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-station composite processing device for cold heading dies of automotive fasteners, comprising a first guide plate (1), characterized in that: The bottom rear side of the first guide plate (1) is fixedly connected to the front surface of the base (2). A servo motor (3) is fixedly connected to the top left side of the base (2). A transmission arm (4) is fixedly provided at the output end of the servo motor (3). A first spur rack (6) is fixedly connected to the bottom rear side of the first guide plate (1). A first gear (5) and a second gear (11) are meshed on the top of the first spur rack (6). A second spur rack (7) is meshed on the top of the first gear (5). A connecting plate (21) is fixedly connected to the top of the second spur rack (7). The connecting plate (21) is slidably connected to both the first guide plate (1) and the second guide plate (12). A second guide plate (12) is fixedly connected to the rear side of the base (2). A hydraulic press (8) is fixedly connected to the rear side of the second guide plate (12). A moving mechanism is provided on the surface of the second guide plate (12).

2. The multi-station composite processing device for cold heading dies of automotive fasteners according to claim 1, characterized in that: The moving mechanism includes a moving plate (16), which is slidably connected to the inner wall of the front side of the second guide plate (12). A forming mold (15) is fixedly connected to the surface of the moving plate (16). Mold positioning grooves (17) are provided on both the front and rear sides of the top of the moving plate (16). An ejection groove (20) is provided on the middle side surface of the moving plate (16). An ejector pin (18) is slidably connected to the inner wall of the ejection groove (20). The moving plate (16) is fixedly connected to the connecting plate (21).

3. The multi-station composite processing device for cold heading dies of automotive fasteners according to claim 2, characterized in that: The ejector pin (18) is slidably connected to the inner wall of the top of the base (2), and the ejector pin (18) is slidably connected to the inner wall of the molding die (15).

4. The multi-station composite processing device for cold heading dies of automotive fasteners according to claim 1, characterized in that: The first gear (5) has a connecting bar rotatably connected to its surface. The left side of the connecting bar is rotatably connected to the second gear (11), and the transmission arm (4) is rotatably connected to the connecting bar.

5. The multi-station composite processing device for cold heading dies of automotive fasteners according to claim 1, characterized in that: The top of the second gear (11) meshes with the bottom surface of the second spur rack (7), and the front surface of the second spur rack (7) is in contact with the rear surface of the first guide plate (1).

6. The multi-station composite processing device for cold heading dies of automotive fasteners according to claim 1, characterized in that: The hydraulic press (8) has a sliding rod (9) slidably connected to its inner wall. The bottom of the sliding rod (9) is fixedly connected to a pressing slider (13), and the bottom of the pressing slider (13) is fixedly connected to a punch (10).

7. The multi-station composite processing device for cold heading dies of automotive fasteners according to claim 1, characterized in that: A cylinder is provided on the inner wall of the top of the base (2), and a gripper (19) is slidably connected to the inner wall of the cylinder.

8. The multi-station composite processing device for cold heading dies of automotive fasteners according to claim 2, characterized in that: The left side surface of the movable plate (16) is fixedly connected to the initial upsetting mold (14), and the ejector pin (18) is slidably connected to the inner wall of the initial upsetting mold (14).

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