A material shortage detection device of a slitting machine

Abstract

This utility model discloses a material shortage detection device for a slitting machine, mainly relating to the field of slitting machine feeding. It includes a feeding platform for placing pads, with the pads stacked on the platform. A detection block is located below a through hole, and a sliding column is vertically slidably connected to the detection block. A roller is rotatably connected to the top of the sliding column, passing through the through hole and rolling into contact with the bottom of the lowest pad. A return spring is provided between the sliding column and the detection block. A pressure sensor is installed on the detection block, and a protrusion on the sliding column cooperates with the pressure sensor. An alarm is installed on the feeding platform, and the pressure sensor is electrically connected to the alarm. The advantages of this utility model are: it solves the technical problems of high failure rate and insufficient accuracy of existing material shortage detection devices; it promptly issues an alarm when the pads are depleted, thus reminding the operator to replenish the material; and it is not easily affected by impurities and residual glue, ensuring the accuracy of material shortage detection and greatly reducing the failure rate.

Description

Technical Field

[0001] This utility model relates to the field of slitting machine feeding, specifically a material shortage detection device for slitting machines. Background Technology

[0002] A slitting machine is a device used to cut pads into strips. To improve slitting efficiency, pads are typically stacked on a loading platform, and a drive chain moves the bottom pad to achieve automatic feeding, greatly improving feeding efficiency. However, this method requires manual observation of the remaining pad quantity. When multiple slitting machines are running simultaneously, it is impossible to monitor the remaining pad quantity of all slitting machines, which can lead to a shortage of material in some slitting machines. This results in untimely replenishment of material, affecting the efficiency of slitting. Improved technologies also use photoelectric sensors to detect the remaining pad quantity, which can promptly alert operators to replenish material when it is insufficient. However, the processing environment of the slitting machine generates a lot of impurities and residual glue. After long-term use, these impurities can interfere with the light transmission of the photoelectric sensor, thus affecting the accuracy of detection and increasing the failure rate. Therefore, existing material shortage detection devices need further optimization in terms of accuracy and failure rate. Utility Model Content

[0003] The purpose of this invention is to provide a material shortage detection device for a slitting machine, which can solve the technical problems of high failure rate and insufficient accuracy of existing material shortage detection devices. When the pad is depleted, an alarm is issued in time to remind the operator to replenish the material. It is not easily affected by impurities and residual glue, ensuring the accuracy of material shortage detection and greatly reducing the failure rate.

[0004] To achieve the above objectives, this utility model employs the following technical solution: A material shortage detection device for a slitting machine includes a loading platform for placing pads, the pads being stacked on the loading platform. The loading platform has multiple through holes. A drive chain is symmetrically arranged below the loading platform, and multiple push blocks are mounted on the drive chain. Each push block passes through a through hole and contacts one side of the bottommost pad. A stop is provided on the loading platform, contacting the other side of the pad. The bottom of the stop has a passage opening that allows only the bottommost pad to pass through. A bracket is provided on the loading platform, and a pressure plate is slidably connected vertically to the bracket. The bracket is equipped with a telescopic rod that controls the vertical sliding of the pressure plate. The pressure plate contacts the top of the uppermost pad. A detection block is located below the through hole. A sliding column is slidably connected to the detection block along the vertical direction. A roller is rotatably connected to the top of the sliding column. The roller passes through the through hole and rolls into contact with the bottom of the lowermost pad. A return spring is provided between the sliding column and the detection block. A pressure sensor is provided on the detection block. A protrusion is provided on the sliding column to cooperate with the pressure sensor. An alarm is provided on the loading platform. The pressure sensor is electrically connected to the alarm.

[0005] Furthermore, the top of the detection block is provided with a sliding groove, the sliding column is slidably connected in the sliding groove along the vertical direction, the top of the sliding groove is provided with a locking edge, the sliding column passes through the locking edge and is slidably connected to it, the pressure sensor is fixed at the bottom of the locking edge, and the pressure sensor is used in conjunction with the top of the protrusion.

[0006] Furthermore, the locking edge is provided with an inner hole, the cross-sectional diameter of which is smaller than the cross-sectional diameter of the slide groove. The sliding post slides in contact with the side wall of the inner hole, the protrusion slides in contact with the side wall of the slide groove, and the return spring is located between the bottom of the protrusion and the bottom of the slide groove.

[0007] Furthermore, the bottom of the pressure plate is provided with multiple crossbars, the length direction of which is perpendicular to the length direction of the pressure plate, and the crossbars are in contact with the top of the uppermost pad.

[0008] Furthermore, the crossbar and the through hole are spaced apart.

[0009] Furthermore, guide rods are symmetrically provided on the pressure plate, and the guide rods pass through the bracket and are slidably connected to it.

[0010] Furthermore, one side of the baffle is provided with multiple support frames, and multiple clamping rollers for use with mating pads are rotatably connected to the support frames.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The structure of this utility model has a support on the loading platform, and a pressure plate is slidably connected to the support along the vertical direction. The pressure plate contacts the top of the uppermost pad and can be driven to move vertically by a telescopic rod, thereby firmly pressing the stacked pads onto the loading platform. The loading platform has multiple through holes. The push block on the drive chain passes through the through holes and contacts one side of the lowermost pad. The loading platform has a baffle that contacts the other side of the pad. The bottom of the baffle has a passage that only allows the bottommost pad to pass through. This structure uses the drive chain to drive the push block to move, so that the push block pushes the bottommost pad away and passes through the passage for continuous loading. The upper pads are blocked by the baffle. Through the continuous operation of the drive chain, the continuous loading of pads is achieved, which greatly improves the efficiency and smoothness of loading. 2. A detection block is located below the through hole. A sliding column is vertically connected to the detection block, and a roller is rotatably connected to the top of the sliding column. After passing through the through hole, the roller rolls into contact with the bottom of the lowest pad. When the pads are stacked on the loading platform, the pads will squeeze the roller, driving the roller and sliding column to slide downwards, compressing the return spring. This causes the protrusion on the sliding column to move downwards away from the pressure sensor, thus preventing the pressure sensor from generating an electrical signal. At this time, the alarm will not sound. When the pads are depleted, the roller loses its compression and slides upwards under the action of the return spring. This causes the protrusion on the sliding column to move upwards and contact the pressure sensor, triggering the alarm connected to it. This reminds the operator to replenish the material in time, eliminating the need to constantly observe the remaining amount of the pads, improving the timeliness of replenishment. Furthermore, the detection relies on the squeezing force of the protrusion on the pressure sensor. Debris or residual glue generated from slitting will not affect the accuracy of the detection, further ensuring the accuracy of material shortage detection and greatly reducing the failure rate. Attached Figure Description

[0012] Appendix Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Appendix Figure 2 This is the left view of this utility model.

[0014] Appendix Figure 3 This is an appendix to this utility model. Figure 2 A cross-sectional view along the AA direction.

[0015] Appendix Figure 4 This is an appendix to this utility model. Figure 3 Cross-sectional view along the BB direction.

[0016] Appendix Figure 5 This is an appendix to this utility model. Figure 3 A cross-sectional view along the CC direction.

[0017] Appendix Figure 6This is an appendix to this utility model. Figure 5 A magnified view of part D in the middle.

[0018] The labels shown in the attached diagram: 1. Pad; 2. Feeding platform; 3. Through hole; 4. Drive chain; 5. Push block; 6. Stop; 7. Pass-through port; 8. Bracket; 9. Pressure plate; 10. Telescopic rod; 11. Detection block; 12. Sliding column; 13. Roller; 14. Return spring; 15. Pressure sensor; 16. Protrusion; 17. Alarm; 18. Slide groove; 19. Locking edge; 20. Inner hole; 21. Crossbar; 22. Guide rod; 23. Support frame; 24. Pressure wheel. Detailed Implementation

[0019] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0020] Reference Figure 1 and Figure 2This utility model describes a material shortage detection device for a slitting machine. The main structure includes a loading platform 2 for placing pads 1. The pads 1 are stacked on the loading platform 2. A slitting roller is symmetrically rotatably connected to one side of the loading platform 2. The pads 1 enter between two slitting rollers. One slitting roller has multiple cutters arranged in an array, and the other slitting roller has grooves at positions corresponding to the cutters, thereby cutting the passing pads 1 into multiple strips, achieving the slitting operation of the pads 1. The loading platform 2 has multiple through holes 3, and drive chains 4 are symmetrically arranged below the loading platform 2. Specifically, rotating shafts are symmetrically arranged below the loading platform 2, and the rotating shafts are driven by a motor. Symmetrically welded or bolted sprockets are fixed to the rotating shaft. The sprockets mesh with the drive chain 4, driving the drive chain 4. Multiple push blocks 5 are fixed to the drive chain 4 by welding or bolting. Each push block 5 passes through a through hole 3 and contacts one side of the lowest pad 1. When the drive chain 4 rotates, the push blocks 5 pass through the through hole 3 and contact one side of the lowest pad 1, pushing the lowest pad 1 forward. After reaching the end of the drive chain 4, the push blocks 5 rotate downwards, separating from the pad 1, allowing the pad 1 to enter the space between the two slitting rollers independently, achieving individual feeding of the pad 1. Subsequent push blocks 5 rotate upwards again to feed the pad 1. The bottommost pad 1 is pushed, and this reciprocating motion continuously feeds the pad 1. A baffle 6 is fixed to the feeding platform 2 by welding or bolts. The baffle 6 contacts the other side of the pad 1 and blocks the stacked pads 1. When the pusher 5 moves the bottommost pad 1 for feeding, the baffle 6 blocks the upper pads 1, preventing them from moving forward synchronously due to friction. The bottom of the baffle 6 has a passageway 7 that only allows the bottommost pad 1 to pass through. The bottommost pad 1 passes through the passageway 7 for feeding, while the upper pads 1 are effectively blocked by the baffle 6, ensuring the accuracy and smoothness of individual pad feeding. The feeding platform 2 is equipped with a bracket 8 fixed by welding or bolts. A pressure plate 9 is slidably connected to the bracket 8 along the vertical direction. The pressure plate 9 is in contact with the top of the uppermost pad 1. The bracket 8 is provided with a telescopic rod 10 to control the vertical sliding of the pressure plate 9. The telescopic rod 10 can be an electric cylinder or a hydraulic cylinder. The pressure plate 9 is fixed to the movable end of the telescopic rod 10 by welding or bolts. The vertical extension and retraction of the telescopic rod 10 drives the pressure plate 9 to slide vertically. This allows the pressure plate 9 to slide downward in time after the pad 1 is consumed, maintaining the pressing operation on the stacked pads 1. This prevents the stacked pads 1 from tilting or collapsing, ensuring the continuity and accuracy of feeding. A detection block 11 is fixed below the through hole 3 by welding or bolts. A sliding column 12 is vertically slidably connected to the detection block 11. A roller 13 is rotatably connected to the top of the sliding column 12 via a bearing. The roller 13 passes through the through hole 3 and rolls in contact with the bottom of the lowest pad 1. The roller 13 is located below the pad 1. With this structure, when the pads 1 are stacked on the loading platform 2, they will compress the roller 13 and the sliding column 12, causing them to slide downwards. A return spring 14 is provided between the sliding column 12 and the detection block 11. When the sliding column 12 slides downwards, it compresses the return spring 14. A pressure sensor 15 is fixed to the measuring block 11 by adhesive bonding or bolts. The pressure sensor 15 can be any pressure-sensing sensor structure available on the market; specifically, the PX409-USBH series pressure sensor 15 sold by Omega Measurement Technology (Shanghai) Co., Ltd. can be used. A protrusion 16, which mates with the pressure sensor 15, is fixed to the sliding column 12 by welding or bolts. An alarm 17 is provided on the loading platform 2. The alarm 17 can be any existing alarm capable of emitting both sound and light. The pressure sensor 15 is electrically connected to the alarm 17. The system is configured to power the pressure sensor 15 and the alarm 17. When the stacked pads 1 press the roller 13, causing the roller 13 and the slide column 12 to slide downwards, the return spring 14 is compressed. The protrusion 16 on the slide column 12 slides downwards away from the pressure sensor 15, so that the pressure sensor 15 does not generate an electrical signal, thereby preventing the alarm 17 from sounding. When the bottom pad 1 is pushed by the push block 5 for feeding, the rolling motion of the roller 13 relative to the pad 1 does not interfere with the movement of the bottom pad 1. After all the pads 1 have been fed, the roller 13, which is no longer pressing, releases its pressure. The slide column 12 slides upward under the action of the return spring 14, causing the protrusion 16 on the slide column 12 to slide upward and come into contact with the pressure sensor 15. This generates an electrical signal, which is then transmitted to the alarm 17, causing the alarm 17 to issue an audible and visual alarm, reminding the operator to replenish the pad 1 in time, making the feeding of the pad 1 more timely. The above detection is achieved by squeezing the pressure sensor 15, and the accuracy of the detection will not be affected by impurities and residual glue generated by slitting. It is not prone to failure after long-term use, which greatly improves the accuracy of material shortage detection and reduces the failure rate.

[0021] Preferred, refer to Figure 5 and Figure 6The top of the detection block 11 is provided with a groove 18, which is recessed downward from the top of the detection block 11. The sliding column 12 is slidably connected in the groove 18. The top of the groove 18 is fixed with a locking edge 19 by welding or integral molding. The sliding column 12 passes through the locking edge 19 and is slidably connected to it. The pressure sensor 15 is glued or fixed to the bottom of the locking edge 19 by bolts. The pressure sensor 15 is used in conjunction with the top of the protrusion 16. This arrangement allows the locking edge 19 to block the protrusion 16 on the sliding column 12 when the sliding column 12 slides upward to reset under the action of the return spring 14, so that the sliding column 12 will not fall out of the groove 18. At the same time, the locking edge 19 can seal the top of the groove 18, so that external impurities or residual adhesive are not easy to enter the interior of the groove 18 and cause contamination, thus ensuring the accuracy of the detection data.

[0022] Preferably, the locking edge 19 has a through inner hole 20, the cross-sectional diameter of which is smaller than that of the slide groove 18. The slide post 12 slides in contact with the side wall of the inner hole 20, the protrusion 16 slides in contact with the side wall of the slide groove 18, and the return spring 14 is located between the bottom of the protrusion 16 and the bottom of the slide groove 18. This structure allows the locking edge 19 to effectively block the protrusion 16, so that when the slide post 12 slides upward to reset under the action of the return spring 14, it will not slide out of the slide groove 18. This improves the stability of the slide post 12 sliding vertically in the slide groove 18, further ensures the accuracy of the cooperation between the protrusion 16 on the slide post 12 and the pressure sensor 15, and further improves the accuracy of detection.

[0023] Preferably, the bottom of the pressure plate 9 is fixed with multiple crossbars 21 by welding or bolts. The length direction of the crossbars 21 is perpendicular to the length direction of the pressure plate 9. The crossbars 21 are in contact with the top of the uppermost pad 1. The arrangement of multiple crossbars 21 greatly increases the pressing range of the pressure plate 9 on the pad 1, thereby improving the balance of force on each position of the stacked pad 1, and further improving the stability of the stacked pad 1, ensuring the smoothness of material feeding.

[0024] Preferred, refer to Figure 3 The crossbar 21 is spaced apart from the through hole 3. This arrangement ensures that when the pad plate 1 is exhausted and the pressure plate 9 drives multiple crossbars 21 to descend, the crossbar 21 will not enter the through hole 3. Therefore, it will not interfere with the movement of the push block 5 moving inside the through hole 3, thereby avoiding potential damage to the push block 5 and the drive chain 4.

[0025] Preferably, guide rods 22 are symmetrically fixed to the pressure plate 9 by welding or bolts. The guide rods 22 pass through the bracket 8 and are slidably connected to it. This structure allows multiple guide rods 22 on the pressure plate 9 to pass through the bracket 8 and be slidably connected to it when the telescopic rod 10 drives the pressure plate 9 to slide up and down. This structure improves the stability of the vertical sliding of the pressure plate 9 and improves the firmness of pressing the stacked pads 1.

[0026] Preferred, refer to Figure 4 The baffle 6 has multiple support frames 23 fixed to one side by welding or bolts. Multiple pressing rollers 24 for use with the pad 1 are rotatably connected to the support frame 23 by bearings. With this structure, when the push block 5 pushes the pad 1 to move on the loading table 2, the multiple pressing rollers 24 roll and press the pad 1, so that the pad 1 can accurately enter between the two subsequent slitting rollers, making the pad 1 less prone to warping or bending, and further ensuring the smoothness of loading.

[0027] Working principle: The structure of this utility model has a support 8 on the loading platform 2, and a pressure plate 9 is slidably connected to the support 8 along the vertical direction. The pressure plate 9 contacts the top of the uppermost pad 1. The pressure plate 9 can be driven to move vertically by the telescopic rod 10, thereby firmly pressing the stacked pads 1 onto the loading platform 2. The loading platform 2 has multiple through holes 3. The push block 5 on the drive chain 4 passes through the through holes 3 and contacts one side of the lowermost pad 1. The loading platform 2 has a baffle 6, which contacts the other side of the pad 1. The bottom has a passageway 7 that allows only the bottommost pad 1 to pass through. This structure uses a drive chain 4 to drive a pusher block 5 to move, so that the pusher block 5 pushes the bottommost pad 1 away and passes through the passageway 7 for continuous feeding. The upper pads 1 are blocked by the baffle 6. Through the continuous operation of the drive chain 4, the pads 1 are continuously fed, which greatly improves the efficiency and smoothness of feeding. Below the through hole 3, there is a detection block 11. A sliding column 12 is vertically slidably connected to the detection block 11, and a roller 13 is rotatably connected to the top of the sliding column 12. After passing through the through hole 3, the roller 13 rolls and contacts the bottom of the lowest pad 1. When the pads 1 are stacked on the loading platform 2, the pads 1 will squeeze the roller 13, driving the roller 13 and the slide column 12 to slide downwards, compressing the return spring 14. This causes the protrusion 16 on the slide column 12 to move downwards away from the pressure sensor 15, thus preventing the pressure sensor 15 from generating an electrical signal. At this time, the alarm 17 will not sound an alarm. When the pad 1 is exhausted, the roller 13 loses its compression and slides upwards under the action of the return spring 14. This causes the protrusion 16 on the slide column 12 to move upwards and contact the pressure sensor 15, thus causing the alarm 17, which is electrically connected to it, to sound an alarm, reminding the operator to replenish the material in time. It is not necessary to constantly observe the remaining amount of the pad 1, which improves the timeliness of replenishment. Moreover, the detection relies on the squeezing force of the protrusion 16 on the pressure sensor 15. The debris or residual glue generated by slitting will not affect the accuracy of the detection, further ensuring the accuracy of material shortage detection and greatly reducing the failure rate.

Claims

1. A material shortage detection device for a slitting machine, comprising a loading table (2) for placing pads (1), the pads (1) being stacked on the loading table (2), characterized in that: The loading platform (2) is provided with multiple through holes (3). A drive chain (4) is symmetrically arranged below the loading platform (2). Multiple push blocks (5) are provided on the drive chain (4). After passing through the through holes (3), the push blocks (5) contact one side of the bottom pad (1). A baffle (6) is provided on the loading platform (2). The baffle (6) contacts the other side of the pad (1). The bottom of the baffle (6) is provided with a passage (7) that only allows the bottom pad (1) to pass through. A bracket (8) is provided on the loading platform (2). A pressure plate (9) is slidably connected to the bracket (8) along the vertical direction. A telescopic rod (10) is provided on the bracket (8) to control the vertical sliding of the pressure plate (9). The top of the uppermost pad (1) is in contact with the top of the through hole (3). A detection block (11) is provided below the through hole (3). A sliding column (12) is slidably connected to the detection block (11) along the vertical direction. A roller (13) is rotatably connected to the top of the sliding column (12). The roller (13) passes through the through hole (3) and rolls in contact with the bottom of the lowermost pad (1). A reset spring (14) is provided between the sliding column (12) and the detection block (11). A pressure sensor (15) is provided on the detection block (11). A protrusion (16) is provided on the sliding column (12) to cooperate with the pressure sensor (15). An alarm (17) is provided on the loading platform (2). The pressure sensor (15) is electrically connected to the alarm (17).

2. The material shortage detection device for a slitting machine according to claim 1, characterized in that: The top of the detection block (11) is provided with a groove (18), the sliding column (12) is slidably connected in the groove (18) in the vertical direction, the top of the groove (18) is provided with a locking edge (19), the sliding column (12) passes through the locking edge (19) and is slidably connected to it, the pressure sensor (15) is fixed at the bottom of the locking edge (19), and the pressure sensor (15) is used in conjunction with the top of the protrusion (16).

3. The material shortage detection device for a slitting machine according to claim 2, characterized in that: The locking edge (19) is provided with an inner hole (20), the cross-sectional diameter of the inner hole (20) is smaller than the cross-sectional diameter of the slide groove (18), the slide post (12) slides in contact with the side wall of the inner hole (20), the protrusion (16) slides in contact with the side wall of the slide groove (18), and the return spring (14) is located between the bottom of the protrusion (16) and the bottom of the slide groove (18).

4. The material shortage detection device for a slitting machine according to claim 1, characterized in that: The bottom of the pressure plate (9) is provided with multiple crossbars (21), the length direction of the crossbars (21) is perpendicular to the length direction of the pressure plate (9), and the crossbars (21) are in contact with the top of the uppermost pad (1).

5. The material shortage detection device for a slitting machine according to claim 4, characterized in that: The crossbar (21) and the through hole (3) are spaced apart.

6. The material shortage detection device for a slitting machine according to claim 1, characterized in that: The pressure plate (9) is symmetrically provided with guide rods (22), which pass through the bracket (8) and are slidably connected to it.

7. The material shortage detection device for a slitting machine according to claim 1, characterized in that: The baffle (6) is provided with multiple support frames (23) on one side, and multiple clamping wheels (24) for use with the mating pad (1) are rotatably connected on the support frame (23).

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