Sliding block limiting mechanism of automobile skylight stamping die

Abstract

The utility model provides a sliding block limiting mechanism of an automobile skylight stamping die, a sliding block in sliding fit with an upper die frame is arranged on the upper die frame, one side of the sliding block is connected with the rod end of a piston rod of an air cylinder, and a movable limiting block is arranged on the side, facing the air cylinder, of the sliding block. When the air cylinder drives the sliding block to move in the direction away from the air cylinder so that the shaping insert can be located at the working position, the side face, back on to the air cylinder, of the movable limiting block abuts against the sliding block, and when the air cylinder drives the sliding block so that the shaping insert can move from the working position to the receding position, the movable limiting block can be located at the receding position where the sliding block moves. When the automobile ceiling with the skylight is stamped, the movable limiting block can abut against the sliding block to prevent the sliding block from deviating due to vibration, and a guarantee is provided for the shaping quality of the shaping insert on the skylight frame.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile stamping, in particular to a sliding block limiting mechanism of an automobile sunroof stamping die. Background Art

[0002] In recent years, the optional configurations of automobile models have become increasingly abundant. The same series of models generally provide consumers with a variety of configuration options such as with or without a sunroof to meet the different needs of consumers. In the production of the same series of models, the stamping process of the roof of the models with and without a sunroof is different only in the shaping process at the sunroof opening. In order to reduce the cost of mold development, the stamping process of the roof usually uses the same set of molds, and shaping inserts are set on the mold to shape the flange at the sunroof opening. By switching the position of the shaping inserts, the same set of molds can be used on the production lines of roofs with and without sunroofs.

[0003] In the prior art, the patent entitled "A pressure plate sunroof switching mechanism suitable for stamping dies" (CN111774484A) discloses a technical solution, which includes a cylinder 1, a slider 2, a pressure plate 3, a discharge screw 4, a nitrogen spring 5, a top block 6 and a shaping pressure plate 7. The slider 2 is connected to the piston rod of the cylinder 1, and a hollow structure matching the shape of the pressure plate 3 is provided on the slider 2. In the above scheme, when the piston rod of the cylinder 1 is pushed out, the pressure plate 3 is located below the slider 2, and the shaping pressure plate 7 shapes the flanging of the sunroof frame. The shaping pressure plate 7 is subjected to a large impact force during stamping, and the impact force is transmitted to the slider 2 through the pressure plate 3. The pressure of the piston rod of the cylinder 1 on the slider 2 is less than the lateral force generated by the vibration, so that the position between the slider 2 and the pressure plate 3 is offset in the horizontal direction due to the vibration. When the slider 2 is offset by a large distance, causing the contact surface of the pressure plate 3 against the slider 2 to be offset to the hollow part of the slider 2, the shaping pressure plate 7 moves upward and leaves the sunroof shaping working position, and passively switches to the stamping mode of the vehicle model without a sunroof, so that the stamping operation of the ceiling with a sunroof is forced to stop, reducing production efficiency. The offset of the slider 2 will also cause quality problems in the ceiling sunroof being stamped.

[0004] The technical solution disclosed in the patent entitled "Stamping Die" (CN218925959U) includes an upper die base 10, a lower die base 20, a press plate 30 and a cut-out insert 40. A solid block 11 is installed at the bottom of the upper die base 10, and the solid block 11 is slidably connected to the upper die base 10. When the above solution is used to stamp a ceiling with a skylight, the abutment between the mounting column 41 of the cut-out insert 40 and the guide column 111 in the solid block 11 may slip due to the vibration generated by the stamping, which also causes the abutment surface between the mounting column 41 and the guide column 111 to disengage and passively switch to the stamping mode of a vehicle without a skylight, forcing the operation to stop. Utility Model Content

[0005] The utility model aims to provide a slider limiting mechanism for a stamping die of an automobile sunroof, which prevents the slider from being displaced during the stamping process by arranging a movable limiting block.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a slider limiting mechanism of a car sunroof stamping die, a slider is arranged on the upper die frame and slides with the upper die frame in the horizontal direction, one side of the slider is connected to the piston rod end of the cylinder, and the cylinder is fixed on the upper die frame. The cylinder drives the slider to displace in the horizontal direction so that the shaping insert of the upper die frame is in the working position of stamping the sunroof frame or in an avoidance position away from the top surface of the ceiling, and a movable limit block is arranged on the side of the slider facing the cylinder. The cylinder drives the slider to displace in the direction away from the cylinder so that when the shaping insert is in the working position, the side of the movable limit block facing away from the cylinder abuts against the slider, and the cylinder drives the slider so that in the process of moving the shaping insert from the working position to the avoidance position, the movable limit block is in the avoidance position of the slider movement.

[0007] The utility model mainly arranges a movable limit block on the side of the slider facing the cylinder. When the shaping insert is in the working position, the movable limit block abuts against the slider; when the shaping insert switches from the working position to the avoidance position, the movable limit block is in the avoidance position of the slider. When punching the roof of a car with a skylight, the movable limit block can press the slider to prevent it from shifting due to vibration, so as to ensure that the slider can maintain the posture of the shaping insert, and provide guarantee for the shaping quality of the skylight frame by the shaping insert. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the slider limiting mechanism of the automobile sunroof stamping die. DETAILED DESCRIPTION

[0009] See also Figure 1 The shown automobile sunroof stamping die slider limiting mechanism has a slider 10 arranged on the upper die frame 1 for sliding cooperation with the upper die frame 1 in the horizontal direction, one side of the slider 10 is connected to the piston rod end of the cylinder 20, and the cylinder 20 is fixed on the upper die frame 1. The cylinder 20 drives the slider 10 to move in the horizontal direction so that the shaping insert of the upper die frame 1 is in the working position for stamping the sunroof frame or in the avoidance position away from the top surface of the ceiling. A movable limiting block 30 is arranged on the side of the slider 10 facing the cylinder 20. The cylinder 20 drives the slider 10 to move in the direction away from the cylinder 20 so that when the shaping insert is in the working position, the side of the movable limiting block 30 facing away from the cylinder 20 abuts against the slider 10. When the cylinder 20 drives the slider 10 so that the shaping insert moves from the working position to the avoidance position, the movable limiting block 30 is in the avoidance position of the movement of the slider 10.

[0010] In the above scheme, when punching a ceiling with a skylight, the piston rod of the cylinder 20 lifts the slider 10 so that the shaping insert is in the working position. When the shaping insert punches the skylight frame, it will be subjected to a large impact force, which is transmitted to the slider 10 to cause it to vibrate. Since the pressure of the piston rod of the cylinder 20 on the slider 10 is less than the lateral force generated by the vibration of the slider 10, the slider 10 and the shaping insert have a tendency to shift laterally due to vibration. In the above state, a movable limit block 30 is set to abut the side of the slider 10, providing additional pressure to the slider 10 to offset the lateral force generated by the vibration, avoiding the position of the slider 10 from shifting to ensure that the shaping insert is in the working position, thereby ensuring the shaping quality of the skylight frame. When the stamping part is switched to a ceiling without a skylight, the shaping insert needs to be moved from the working position to the avoidance position. At this time, the movable limit block 30 is in the avoidance position of the movement of the slider 10 so that the shaping insert can switch positions smoothly.

[0011] Preferably, the movable limit block 30 is extended and retracted in the vertical direction on the upper mold frame 1 so that it is respectively located at the abutment position or the avoidance position of the slider 10. Specifically, a receiving hole for accommodating the movable limit block 30 is provided on the upper mold frame 1. When the movable limit block 30 extends out of the plate surface of the upper mold frame 1 and abuts against the slider 10, the other side of the movable limit block 30 abuts against the inner wall surface of the receiving hole of the upper mold frame 1 to obtain support.

[0012] Another preferred solution is that a back support 40 fixed on the upper mold frame 1 is provided on the side of the slider 10 facing the cylinder 20, the distance between the back support 40 and the slider 10 at the working position is greater than or equal to the telescopic distance of the piston rod of the cylinder 20, and the movable stop block 30 is telescopically displaced in a direction perpendicular to the length of the piston rod of the cylinder 20, so that it is respectively located at the abutment position or the avoidance position of the slider 10, and the two sides of the movable stop block 30 at the abutment position are respectively abutted with the side surfaces of the slider 10 and the back support 40. In the above solution, the back support 40 provides support for the slider 10 at the abutment position, and the distance between the back support 40 and the slider 10 at the working position is greater than or equal to the telescopic distance of the piston rod of the cylinder 20, so as to avoid interference between the back support 40 and the slider 10.

[0013] In order to facilitate the pushing and pulling of the movable limit block 30, a pull rod 31 is connected to the side of the movable limit block 30 away from the piston rod of the cylinder 20, and the rod length direction is consistent with the displacement direction of the movable limit block 30. The middle part of the pull rod 31 is provided with a limit seat 32 fixed on the upper mold frame 1. The end of the pull rod 31 extending out of the frame of the upper mold frame 1 is provided with a locking member 33. The limit seat 32 can limit the pull rod 31 to move only along its own rod length direction, and the locking member 33 can fix the position of the pull rod 31 and thus fix the position of the movable limit block 30. The end of the pull rod 31 extending out of the frame of the upper mold frame 1 can be connected to a cylinder or a motor to provide drive, or it can be directly operated manually.

[0014] A more preferred solution is that two movable stop blocks 30 are provided, which are respectively placed on both sides of the length direction of the piston rod of the cylinder 20. The above solution makes the pressure of the movable stop blocks 30 against the slider 10 more balanced, thereby improving the fault tolerance.

Claims

1. A slider limit mechanism for a stamping die for an automobile sunroof, wherein a slider (10) is arranged on an upper die frame (1) and is slidably matched with the upper die frame (1) in a horizontal direction, one side of the slider (10) is connected to the piston rod end of a cylinder (20), the cylinder (20) is fixed on the upper die frame (1), and the cylinder (20) drives the slider (10) to move in a horizontal direction so that a shaping insert of the upper die frame (1) is in a working position for stamping a sunroof frame or in an avoidance position away from a ceiling top surface, characterized in that: A movable limit block (30) is arranged on one side of the slider (10) facing the cylinder (20). When the cylinder (20) drives the slider (10) to move in a direction away from the cylinder (20) so that the shaping insert is in the working position, the side of the movable limit block (30) facing away from the cylinder (20) abuts against the slider (10). When the cylinder (20) drives the slider (10) so that the shaping insert moves from the working position to the avoidance position, the movable limit block (30) is in the avoidance position of the movement of the slider (10).

2. The slider limiting mechanism of the automobile sunroof stamping die according to claim 1 is characterized in that: The movable limit block (30) is extended and retracted in the vertical direction on the upper mold frame (1) so as to be located at the abutment position or the avoidance position of the slider (10) respectively.

3. The slider limiting mechanism of the automobile sunroof stamping die according to claim 1 is characterized in that: A back support (40) fixed on the upper mold frame (1) is provided on the side of the slider (10) facing the cylinder (20); the distance between the back support (40) and the slider (10) located at the working position is greater than or equal to the telescopic distance of the piston rod of the cylinder (20); the movable limit block (30) is telescopically displaced in a direction perpendicular to the length of the piston rod of the cylinder (20) so that it is respectively located at an abutment position or an avoidance position of the slider (10); and the two sides of the movable limit block (30) in the abutment position are respectively abutted against the side surfaces of the slider (10) and the back support (40).

4. The slider limiting mechanism of the automobile sunroof stamping die according to claim 3 is characterized in that: A pull rod (31) whose rod length direction is consistent with the displacement direction of the movable limit block (30) is connected to the side of the movable limit block (30) away from the piston rod of the cylinder (20), and a limit seat (32) fixed on the upper mold frame (1) is provided in the middle of the pull rod (31).

5. The slider limiting mechanism of the automobile sunroof stamping die according to claim 4 is characterized in that: The end of the pull rod (31) extending out of the frame of the upper mold frame (1) is provided with a locking piece (33).

6. The slider limiting mechanism of the automobile sunroof stamping die according to claim 1, characterized in that: Two movable limit blocks (30) are provided and are respectively disposed on both sides of the piston rod of the cylinder (20) in the length direction.

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