Anti-arching high-precision feeding device for punching machine

Abstract

The utility model relates to an anti-arching high-precision feeding device for a punching machine, which comprises a rack, a feeding mechanism is arranged at the front end of the rack, a step pitch detection mechanism is arranged at the rear end of the rack, the feeding mechanism is used for conveying plate materials backwards, the step pitch detection mechanism is used for detecting the length of the plate materials fed each time, an arc-shaped material guide mechanism is arranged at the front end of the feeding mechanism, and the step pitch detection mechanism is used for detecting the length of the plate materials fed each time. The arc-shaped material guiding mechanism comprises two supporting plates, a plurality of carrier rollers are arranged between the two supporting plates, the carrier rollers form an arc-shaped conveying channel, and the conveying channel is communicated with an inlet of the feeding mechanism. The step pitch detection mechanism is provided with a connecting frame, a pair of pinch rollers is mounted on the connecting frame, and a certain horizontal distance is formed between the pair of pinch rollers and the step pitch detection mechanism, so that a plate between the pinch rollers and the step pitch detection mechanism is in a horizontal straight line; the feeding device can effectively prevent the plate from arching and ensure the feeding precision.

Description

Technical Field

[0001] This utility model relates to the field of continuous processing technology for punch presses, specifically a high-precision feeding device for punch presses to prevent arching. Background Technology

[0002] Some products use steel coils for continuous processing via a punch press. During processing, a feeding mechanism intermittently feeds the uncoiled steel sheet into the punch press. Patent document CN217343815U discloses a steel sheet correction feeding device, and patent document CN217358457U discloses a step distance detection device. In actual production, these two are used in combination. The feeding device feeds the steel sheet into the punch press, and the feeding length is detected in real time. Feeding is paused each time the feeding length reaches a preset value, while the punch press performs the punching operation. The prior art constituted by the above two patent documents has the following problems in actual production: Problems: 1. The steel plate is not in a straight state before entering the feeding mechanism. In order to maintain the matching of the cycle time of each equipment on the production line, the cycle time of the previous process is slower, so a buffer section needs to be set. The steel plate has a certain degree of curvature in the buffer section, but CN217343815U does not have a transition measure. When the steel plate enters the feeding mechanism, it is easy to bend and form local deformation, which affects product quality. 2. At present, the punching process of the punching press requires the plate to be in a relaxed state during punching. The internal stress of medium and thick plates is large, and problems such as arching deformation and slippage are easy to occur during feeding and punching, resulting in low feeding accuracy. When using continuous die punching, the die is easily damaged. Summary of the Invention

[0003] The purpose of this invention is to solve the problems existing in the prior art and provide a high-precision anti-arching feeding device for punch presses.

[0004] The specific solution of this utility model is as follows: a high-precision anti-arching feeding device for a punch press, including a frame, a feeding mechanism at the front end of the frame, and a step distance detection mechanism at the rear end of the frame. The feeding mechanism is used to convey the sheet metal backward, and the step distance detection mechanism is used to detect the length of the sheet metal in each feeding. The front end of the feeding mechanism is provided with an arc-shaped guiding mechanism, which includes two support plates and several rollers between the two support plates. The rollers form an arc-shaped conveying channel, which is connected to the inlet of the feeding mechanism. The step distance detection mechanism is provided with a connecting frame, on which a pair of clamping rollers are mounted. A certain horizontal distance is provided between the pair of clamping rollers and the step distance detection mechanism, so that the sheet metal between the clamping rollers and the step distance detection mechanism is in a horizontal straight line.

[0005] Furthermore, the frame is equipped with a sliding pair, and the fixed frame of the punch press is provided with a vertically arranged linear track corresponding to the sliding pair. The frame is slidably connected to the linear track through the sliding pair, and a lifting mechanism is installed at the bottom of the frame.

[0006] Furthermore, the lifting mechanism includes a fixed bracket, one side of which is connected to the fixed frame of the punch press, and a screw jack is mounted on the fixed bracket, with the top of the screw jack fixedly connected to the frame.

[0007] Furthermore, one of the pair of clamping rollers is fixed, while the other is connected to a cylinder, which pushes the clamping roller to clamp the sheet metal.

[0008] Furthermore, each of the two support plates is provided with a waist-shaped mounting hole arranged vertically at each idler roller. Both ends of the idler roller are located in the corresponding waist-shaped mounting hole and are fitted with locking bolts. The locking bolts are used to lock the height position of the corresponding idler roller.

[0009] Compared with the prior art, the present invention has the following advantages: 1. By setting a pair of clamping rollers, the plate material is clamped at two points simultaneously with the detection roller of the layout detection mechanism during feeding, which can effectively prevent the plate material from arching when the feeding mechanism is relaxed, thereby avoiding large feeding errors and ensuring feeding accuracy; 2. By setting several support rollers to form an arc transition support, the plate material is prevented from deforming due to sudden changes in angle when it enters the feeding mechanism. Attached Figure Description

[0010] Figure 1 This is the front view of this utility model;

[0011] Figure 2 yes Figure 1 Top view;

[0012] In the diagram: 1. Frame; 2. Support plate; 3. Locking bolt; 4. Waist-shaped mounting hole; 5. Idler roller; 6. Connecting frame; 7. Pinch roller A; 8. Pinch roller B; 9. Cylinder; 10. Fixed bracket; 11. Screw jack; 12. Feeding mechanism; 13. Pitch detection mechanism; 14. Fixed frame; 15. Sliding pair. Detailed Implementation

[0013] See Figure 1-2 This embodiment is a high-precision anti-arching feeding device for a punch press, including a frame 1. The front end of the frame 1 is equipped with a feeding mechanism, and the rear end of the frame 1 is equipped with a pitch detection mechanism 13. The feeding mechanism is used to convey the sheet metal backward, and the pitch detection mechanism 13 is used to detect the length of the sheet metal in each feeding. The front end of the feeding mechanism is provided with an arc-shaped guiding mechanism, which includes two support plates 2. Several rollers 5 are installed between the two support plates 2, forming an arc-shaped conveying channel, which is connected to the inlet of the feeding mechanism. The pitch detection mechanism 13 is provided with a connecting frame 6, and a pair of clamping rollers are installed on the connecting frame 6. A certain horizontal distance is provided between the pair of clamping rollers and the pitch detection mechanism 13, so that the sheet metal between the clamping rollers and the pitch detection mechanism 13 is in a horizontal straight line.

[0014] Furthermore, the frame 1 is equipped with a sliding pair 15, and the fixed frame 14 of the punch press is provided with a vertically arranged linear track corresponding to the sliding pair 15. The frame 1 is slidably connected to the linear track through the sliding pair 15, and a lifting mechanism is installed at the bottom of the frame 1.

[0015] Furthermore, the lifting mechanism includes a fixed bracket 10, one side of which is connected to the fixed frame 14 of the punch press. A screw jack 11 is mounted on the fixed bracket 10, and the top of the screw jack 11 is fixedly connected to the frame 1.

[0016] Furthermore, pinch roller A7 of the pair of pinch rollers is fixed, and a cylinder 9 is connected to the upper end of pinch roller B8. The cylinder 9 pushes pinch roller B8 to clamp the sheet metal. Furthermore, each of the two support plates 2 has a waist-shaped mounting hole 4 arranged vertically at each position of the support roller 5. The two ends of the support roller 5 are located in the corresponding waist-shaped mounting holes 4 and are fitted with locking bolts 3. The locking bolts 3 are used to lock the height position of the corresponding support roller 5.

[0017] By setting the waist-shaped mounting hole 4, the installation height of the idler roller 5 can be adjusted, thereby changing the arc formed according to actual needs.

[0018] The working principle of this utility model is as follows: By setting several rollers 5 at the front end of the feeding mechanism 12 to form an arc-shaped support structure, the plate material is adapted to the plate material and the plate material is gradually transitioned to the same angle as the entrance angle of the feeding mechanism 12, so as to avoid deformation caused by sudden change of the angle of the plate material. After the plate material enters the feeding mechanism 12, it is fed to the punch press by the feeding mechanism 12. The structure of the feeding mechanism 12 of this utility model is the same as the structure of patent number CN217343815U. During the feeding process, the feeding length is detected in real time by the step distance detection mechanism 13. The step distance detection mechanism 13 of this utility model is the same as the structure of patent number CN217358457U. When the punch press is working, the plate material is clamped by a pair of clamping rollers. The clamping rollers and the detection rollers clamp the plate material at two points, which can effectively prevent the plate material from arching.

[0019] This invention achieves overall height adjustment of the frame 1 by slidingly connecting the frame 1 to the punch press mounting frame 14 and connecting the frame 1 to the screw jack 11, thereby adjusting the feeding height and adapting to the height requirements of different molds.

Claims

1. A high-precision anti-arching feeding device for a punch press, comprising a frame, a feeding mechanism at the front end of the frame, and a pitch detection mechanism at the rear end of the frame. The feeding mechanism is used to convey the sheet metal backward, and the pitch detection mechanism is used to detect the length of the sheet metal in each feeding operation. Its characteristic is: The front end of the feeding mechanism is provided with an arc-shaped material guiding mechanism, which includes two support plates and several rollers between the two support plates. The rollers form an arc-shaped conveying channel, which is connected to the inlet of the feeding mechanism. The pitch detection mechanism is provided with a connecting frame, on which a pair of clamping rollers are mounted. A certain horizontal distance is provided between the pair of clamping rollers and the pitch detection mechanism, so that the sheet metal between the clamping rollers and the pitch detection mechanism is in a horizontal straight line.

2. The anti-arching high-precision feeding device for punch presses according to claim 1, characterized in that: The frame is equipped with a sliding pair, and the fixed frame of the punch press is provided with a vertically arranged linear track corresponding to the sliding pair. The frame is slidably connected to the linear track through the sliding pair, and a lifting mechanism is installed at the bottom of the frame.

3. The anti-arching high-precision feeding device for punch presses according to claim 2, characterized in that: The lifting mechanism includes a fixed bracket, one side of which is connected to the fixed frame of the punch press. A screw jack is mounted on the fixed bracket, and the top of the screw jack is fixedly connected to the frame.

4. The anti-arching high-precision feeding device for punch presses according to claim 1, characterized in that: One of the pair of clamping rollers is fixed, and the other is connected to a cylinder. The cylinder pushes the clamping roller to clamp the sheet material.

5. The anti-arching high-precision feeding device for punch presses according to claim 1, characterized in that: Each of the two support plates has a waist-shaped mounting hole arranged vertically at each idler roller. Both ends of the idler roller are located in the corresponding waist-shaped mounting hole and are fitted with locking bolts. The locking bolts are used to lock the height position of the corresponding idler roller.

Images