Detection device for preventing misfeeding

Abstract

The utility model belongs to the plate stamping feeding technical field especially prevents the detection device of misfeed, including feeding equipment body, yield opening, pressure sensing module and PLC control unit, the pressure sensing module with the PLC control unit between passes through signal connection, its characterized in that: four stands are installed on the feeding equipment body, slidingly connected with the crossbeam between every two stands, the drive telescopic link is installed at the feeding equipment body bottom, and the drive telescopic link drive end is engaged with the crossbeam, after detecting the abnormal feeding, the PLC control unit drive telescopic link action, and the drive telescopic link pushes the crossbeam and slides along the stand, drives the slide plate, installs the rod and the frame rod and moves upward, lifts the abnormal board and is misaligned with the feeding equipment body, this design avoids the interference of abnormal board to the subsequent normal conveying, and simultaneously facilitates the operator to take down the abnormal board fast, reduces the downtime processing time.

Description

Technical Field

[0001] This utility model belongs to the field of sheet metal stamping feeding technology, specifically relating to a detection device to prevent misfeeding. Background Technology

[0002] In the sheet metal stamping process, the accuracy of the feeding process directly affects product quality and production efficiency. Currently, sheet metal is mainly fed into the stamping die for processing using feeding equipment. However, in actual production, factors such as insufficient feeder calibration accuracy, foreign objects on the sheet metal surface, wear of the conveying track, or external vibration can easily lead to misfeeding, such as sheet metal conveying deviation or misalignment.

[0003] When misfeeding occurs, the misaligned sheet metal enters the stamping die, which not only leads to the stamped products having excessive dimensional accuracy and unqualified shapes, resulting in a large number of scraps, but may also cause damage such as die edge breakage and cavity wear due to abnormal contact between the sheet metal and the die, significantly increasing die maintenance costs and downtime. After the abnormality is detected, it is impossible to quickly separate the abnormal sheet metal from the normal conveying process, which can easily cause subsequent sheet metal to accumulate and collide, further increasing production losses. Utility Model Content

[0004] This utility model provides a detection device to prevent misfeeding, which solves the problem that existing feeding mechanisms are prone to misfeeding of plates and are not convenient for quickly removing abnormally fed plates.

[0005] This utility model provides the following technical solution: It includes a feeding device body, a clearance opening, a pressure sensing module, and a PLC control unit. The pressure sensing module and the PLC control unit are connected via a signal. The feeding device body has four uprights installed on it, with a horizontal plate slidably connected between every two uprights. A drive telescopic rod is installed at the bottom of the feeding device body, with its drive end engaging with the horizontal plate. Slide plates are installed at both ends of the horizontal plate, and an installation rod is installed at one end of each slide plate. A frame rod is installed between two installation rods. A staggered base frame is installed at the bottom of the feeding device body, with a sliding carriage slidably connected to its inner wall. A connecting ring is installed inside the sliding carriage, and a threaded tube is threadedly connected to the inner wall of the connecting ring. An inclined block is slidably connected to the top of the threaded tube, and an upright is installed at the bottom of the inclined block. A spring is sleeved on the outer wall of the upright. The drive telescopic rod and the PLC control unit are connected via a signal.

[0006] The upright has a clearance slide on one side that matches the horizontal plate, and the bottom of the horizontal plate has a slot that matches one end of the drive telescopic rod.

[0007] The feeding device body is equipped with a connecting frame that spans the clearance opening, and a limiting rod is installed on the inner wall of the upright frame and the connecting frame. The limiting rod passes through the slide plate and the horizontal plate.

[0008] The misaligned base frame is provided with adjustment holes, and the slide is equipped with connecting rods at both ends, with threaded rings threaded to the outer wall of the connecting rods.

[0009] The inclined block has a positioning block installed on its outer wall, and the threaded tube has a positioning groove that matches the positioning block on its inner wall.

[0010] The inner wall of the threaded pipe is equipped with a support frame, one end of the spring is connected to the support frame, and the other end of the spring is connected to the bottom end of the inclined block.

[0011] The beneficial effects of this utility model are as follows: Utilizing a pressure sensing structure composed of an inclined block, upright rod, spring, and pressure sensing module, combined with the sliding design of the carriage within the misaligned base frame and the threaded connection between the threaded pipe and the carriage, the conveying status of the board can be sensed in real time according to the conveying requirements of different specifications of boards. When the board deviates, the time difference between the pressure signals received by the two pressure sensing modules exceeds the preset range. The pressure sensing module can quickly transmit the abnormal signal to the PLC control unit, triggering the subsequent processing mechanism. The response speed is fast, and the detection accuracy is high. After detecting abnormal feeding, the PLC control unit drives the telescopic rod to move, pushing the horizontal plate along the upright frame, causing the slide plate, mounting rod, and frame rod to move upwards, raising the abnormal board and misaligning it with the main body of the feeding equipment. This design avoids interference from abnormal boards with subsequent normal conveying, and also facilitates quick removal of abnormal boards by operators, reducing downtime.

[0012] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the movement of the horizontal plate in this utility model;

[0015] Figure 3 This is a schematic cross-sectional view of the threaded tube in this utility model;

[0016] Figure 4 This utility model Figure 3 Enlarged diagram of A in the middle;

[0017] Figure 5 This is a flowchart illustrating the use of the telescopic rod in this utility model.

[0018] In the diagram: 1. Feeding equipment body; 11. Clearance opening; 12. Connecting frame; 2. Upright frame; 21. Clearance slide; 22. Horizontal plate; 221. Slot; 23. Drive telescopic rod; 24. Slide plate; 25. Mounting rod; 26. Frame rod; 27. Limiting rod; 3. Offset base frame; 31. Slide; 311. Connecting rod; 312. Threaded ring; 313. Adjustment hole; 32. Connecting ring; 33. Threaded pipe; 34. Inclined block; 341. Positioning block; 342. Positioning groove; 35. Upright rod; 36. Spring; 37. Support frame; 4. Pressure sensing module; 5. PLC control unit. Detailed Implementation

[0019] Please see Figures 1-5 This utility model provides the following technical solution: it includes a feeding device body 1, a clearance opening 11, a pressure sensing module 4, and a PLC control unit 5. The pressure sensing module 4 and the PLC control unit 5 are connected by a signal. The feeding device body 1 is characterized by having four uprights 2 mounted on it, with a horizontal plate 22 slidably connected between every two uprights 2. A drive telescopic rod 23 is mounted at the bottom of the feeding device body 1, with the drive end of the drive telescopic rod 23 engaging with the horizontal plate 22. Slide plates 24 are mounted at both ends of the horizontal plate 22. A mounting rod 25 is installed at one end of the slide plate 24, and a frame rod 26 is installed between the two mounting rods 25. A staggered base frame 3 is installed at the bottom of the feeding equipment body 1. A slide 31 is slidably connected to the inner wall of the staggered base frame 3. A connecting ring 32 is installed inside the slide 31. A threaded tube 33 is threadedly connected to the inner wall of the connecting ring 32. An inclined block 34 is slidably connected to the top of the threaded tube 33. A vertical rod 35 is installed at the bottom of the inclined block 34. A spring 36 is sleeved on the outer wall of the vertical rod 35. The drive telescopic rod 23 is connected to the PLC control unit 5 via a signal.

[0020] In this implementation scheme: the feeding equipment body 1 is used as the feeding mechanism of the stamping equipment. By supporting the stamping sheet on the feeding equipment body 1, it is moved into the stamping equipment under the drive of the feeding equipment body 1. During the filling process of the stamping sheet, inaccurate feeding may occur due to improper adjustment of the feeding machine, foreign matter mixing, etc., resulting in the stamping of the sheet material after feeding and pressing, which will damage the stamping die and make it impossible to produce qualified products, thus hindering the stamping production operation of the sheet material. At this time, a misaligned base frame 3 can be installed at the bottom of the feeding equipment body 1. The slide 31 slidably connected to the inner wall of the misaligned base frame 3 can be adjusted in position, so that the connecting ring 32 installed on the slide 31 is threadedly connected to the threaded tube 33, allowing the threaded tube 33 to rotate. Height adjustment: The threaded tube 33 rotates, allowing its height to be adjusted. This adjusts the inclined block 34 so that it protrudes beyond the support surface of the feeding device body 1 for the plate. At this point, the two threaded tubes 33 and the inclined block 34 can slide via the slide 31, adjusting the position of the two inclined blocks 34 to correspond to the position of the normally conveyed plate, while simultaneously providing downward pressure on the inclined block 34. When the inclined block 34 is pressed down by the plate, it is supported by the spring 36 sleeved on the outer wall of the upright 35, allowing it to reach a uniform height. The inclined block 34 then retracts into the threaded tube 33 under downward pressure. As the threaded tube 33 moves downward, the upright 35 is also pressed down, impacting the pressure on the components installed inside the threaded tube 33. When the pressure sensing module 4 is under pressure, the two inclined blocks 34 exert equal pressure on the pressure sensing module 4 during normal material conveying. However, when the material is affected and shifts, the pressure on the inclined blocks 34 varies, resulting in different pressure signal durations received by the two pressure sensing modules 4. A preset error range is used to filter the conveying of materials. When an abnormally conveyed material triggers the pressure sensing module 4, a pressure signal is transmitted to it. The pressure sensing module 4 can then judge the pressure signal. When processing signals exceeding the preset pressure sensing range, the pressure sensing module 4 can trigger the drive mechanism installed at the bottom of the feeding device body 1. The telescopic rod 23 is driven to extend and retract upwards. At this time, the telescopic rod 23 pushes the horizontal plate 22 to move. The horizontal plate 22 slides between the two uprights 2, and both ends of the horizontal plate 22 are in the inner wall of the uprights 2. The sliding plate 24 connected to the inner wall of the uprights 2 is connected to the mounting rod 25, so that the frame rod 26 erected between the two mounting rods 25 can move upwards. The two sets of mounting rods 25 and frame rod 26 push the plate upwards, making it misaligned with the feeding equipment body 1 and having sufficient height. This allows the plate being conveyed normally to avoid affecting the handling of abnormal plate, and allows it to be conveyed normally. After the abnormal plate is raised, it can be easily removed. Then the horizontal plate 22 is reset to facilitate the handling of subsequent abnormal plates.

[0021] The upright frame 2 has a clearance slide 21 on one side that matches the horizontal plate 22. The bottom of the horizontal plate 22 has a slot 221 that matches one end of the drive telescopic rod 23. The clearance slide 21 on one side of the upright frame 2 can make way for the horizontal plate 22 to slide up and down. The slot 221 can support and limit the top of the drive telescopic rod 23 on its inner wall, so that the drive telescopic rod 23 can push the horizontal plate 22 steadily.

[0022] A connecting frame 12 that spans the clearance opening 11 is installed on the main body 1 of the feeding equipment. A limit rod 27 is installed on the inner wall of the upright frame 2 and the connecting frame 12. The limit rod 27 passes through the slide plate 24 and the horizontal plate 22. The connecting frame 12 installed on the main body 1 spans the clearance opening 11 on the main body 1 of the feeding equipment, so that the main body 1 of the feeding equipment can stably and horizontally feed the plate material, and avoid affecting the overall continuity of the main body 1 of the feeding equipment after the clearance opening 11 is opened.

[0023] The misaligned base frame 3 has an adjustment hole 313. The slide 31 has connecting rods 311 installed at both ends. The outer wall of the connecting rod 311 is threaded with a threaded ring 312. The adjustment hole 313 on the misaligned base frame 3 allows the connecting rod 311 to slide and move. With the rotation of the threaded ring 312 threaded on the outer wall of the connecting rod 311, the pressure between one side of the threaded ring 312 and one side of the misaligned base frame 3 is adjusted. This allows the slide 31 to slide and be stably supported in the inner wall of the misaligned base frame 3, thereby positioning the threaded tube 33.

[0024] A positioning block 341 is installed on the outer wall of the inclined block 34, and a positioning groove 342 matching the positioning block 341 is opened on the inner wall of the threaded tube 33. The positioning block 341 installed on the outer wall of the inclined block 34 can slide and limit itself in the positioning groove 342, so that the inclined block 34 is not supported by the spring 36 and separated from the threaded tube 33. At the same time, it can allow the inclined block 34 to move down normally, ensuring the normal use of the inclined block 34.

[0025] A support frame 37 is installed on the inner wall of the threaded tube 33. One end of the spring 36 is connected to the support frame 37, and the other end of the spring 36 is connected to the bottom end of the inclined block 34. The support frame 37 installed inside the threaded tube 33 can support the bottom of the spring 36, so that the inclined block 34 is supported by the spring 36, so that its top protrudes from the top of the threaded tube 33, and can reset the inclined block 34 after it is pressed down.

[0026] The working principle and usage process of this utility model are as follows: Based on the specifications of the sheet material to be conveyed, the sliding carriage 31 is positioned within the misaligned base frame 3. The carriage 31 is fixed by connecting rods 311 and threaded rings 312, ensuring that the two threaded tubes 33 are positioned corresponding to the normal conveying path of the sheet material. Rotating the threaded tubes 33 adjusts the height of the threaded tubes 33 and the inclined blocks 34, causing the top of the inclined blocks 34 to protrude beyond the support surface of the feeding device body 1. During normal sheet material conveying, downward pressure is simultaneously applied to the two inclined blocks 34. A preset threshold for the pressure signal time difference is established by the pressure sensing module 4, and the PLC control unit 5 controls the driving logic of the telescopic rod 23. The sheet material is conveyed along the preset path under the drive of the feeding device body 1. When passing the inclined block 34, both inclined blocks 34 are simultaneously pressed down, compressing the spring 36 and causing the upright rod 35 to move downwards. The pressure sensing module 4 senses the pressure signal, and the time difference between the signals received by the two pressure sensing modules 4 is within a preset range. Force sensing module 4 transmits normal signals to PLC control unit 5. PLC control unit 5 does not trigger the action of drive telescopic rod 23, and the device maintains normal conveying state. When the board material is mis-fed, such as by deviation, the two inclined blocks 34 are pressed down for different times. The time difference of the pressure signal received by pressure sensing module 4 exceeds the preset threshold. Pressure sensing module 4 transmits abnormal signals to PLC control unit 5. PLC control unit 5 drives telescopic rod 23 to move. The telescopic rod 23 extends and retracts upward and pushes the horizontal plate 22 along the clearance slide 21 through the slot 221. The horizontal plate 22 drives the slide plate 24, mounting rod 25 and frame rod 26 to move upward. The frame rod 26 lifts the abnormal board material, making it misaligned with the feeding equipment body 1 to avoid affecting the subsequent board material conveying. After the operator removes the abnormal board material, the telescopic rod 23 is controlled to reset. The horizontal plate 22, slide plate 24, mounting rod 25 and frame rod 26 then move down and reset, and the device returns to normal detection state.

Claims

1. A detection device for preventing misfeeding, comprising a feeding device body (1), a clearance opening (11), a pressure sensing module (4), and a PLC control unit (5), wherein the pressure sensing module (4) and the PLC control unit (5) are connected by a signal, characterized in that: The feeding device body (1) is equipped with four uprights (2), and a horizontal plate (22) is slidably connected between every two uprights (2). A drive telescopic rod (23) is installed at the bottom of the feeding device body (1). The drive end of the drive telescopic rod (23) engages with the horizontal plate (22). A slide plate (24) is installed at both ends of the horizontal plate (22). An installation rod (25) is installed at one end of the slide plate (24). A frame rod (26) is installed between two installation rods (25). A staggered base frame (3) is installed at the bottom of the feeding device body (1). A slide frame (31) is slidably connected to the inner wall of the staggered base frame (3). A connecting ring (32) is installed inside the slide frame (31). A threaded pipe (33) is threadedly connected to the inner wall of the connecting ring (32). An inclined block (34) is slidably connected to the top of the threaded pipe (33). An upright rod (35) is installed at the bottom of the inclined block (34). A spring (36) is sleeved on the outer wall of the upright rod (35). The drive telescopic rod (23) is connected to the PLC control unit (5) via a signal connection.

2. The detection device for preventing misfeeding according to claim 1, characterized in that: The upright frame (2) has a clearance slide (21) on one side that matches the horizontal plate (22), and the bottom of the horizontal plate (22) has a slot (221) that matches one end of the drive telescopic rod (23).

3. The detection device for preventing misfeeding according to claim 1, characterized in that: The feeding device body (1) is equipped with a connecting frame (12) that spans the clearance opening (11). The inner walls of the upright frame (2) and the connecting frame (12) are equipped with limit rods (27), which pass through the slide plate (24) and the horizontal plate (22).

4. The detection device for preventing misfeeding according to claim 1, characterized in that: The misaligned base frame (3) is provided with an adjustment hole (313), and the slide (31) is provided with connecting rods (311) at both ends. The outer wall of the connecting rod (311) is threaded with a threaded ring (312).

5. The detection device for preventing misfeeding according to claim 1, characterized in that: The outer wall of the inclined block (34) is equipped with a positioning block (341), and the inner wall of the threaded tube (33) is provided with a positioning groove (342) that matches the positioning block (341).

6. The detection device for preventing misfeeding according to claim 1, characterized in that: The inner wall of the threaded tube (33) is equipped with a support frame (37), one end of the spring (36) is connected to the support frame (37), and the other end of the spring (36) is connected to the bottom end of the inclined block (34).

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