Anti-collision device for a T-shaped conveyor belt

Abstract

This utility model discloses an anti-collision device for a T-shaped conveyor belt, relating to a conveying device, including a main control unit, a first through-beam photoelectric sensor, a second through-beam photoelectric sensor, and a blocking assembly. The blocking assembly includes a mounting plate, a driver, a mounting rod, and a blocking rod. The mounting plate is fixedly mounted on one side of the T-shaped conveyor belt, the driver is fixedly mounted on the mounting plate, and the driving end of the driver is fixedly mounted with the mounting rod. A guide rod is movably inserted into the mounting rod, and the blocking rod is fixed to the end of the guide rod. A spring is provided between the blocking rod and the mounting rod. A contactor is provided between the blocking rod and the mounting rod. The contactor, the first through-beam photoelectric sensor, and the second through-beam photoelectric sensor are all electrically connected to the signal acquisition end of the main control unit, and the output end of the main control unit is electrically connected to the control end of the driver. This utility model is practical and reliable, avoiding collision problems caused by the synchronous transmission of two boxes.

Description

Technical Field

[0001] This utility model relates to a conveying device, and more specifically, to an anti-collision device on a T-shaped conveyor belt. Background Technology

[0002] T-shaped conveyor belts are widely used in the transport of goods. In cigarette sorting companies, they are primarily used for the storage of cigarettes upon arrival. After the cigarettes arrive at the sorting facility, pallets of cigarettes are first loaded onto the two belts of the T-shaped conveyor belt using forklifts. Then, workers place the boxes containing the cigarettes onto the belts for transport. However, because the T-shaped conveyor belt has a converging point, when boxes from both belts are placed simultaneously, they will collide at the converging point. Therefore, the current main method is manual control to prevent the two boxes from being transported simultaneously. However, this method cannot completely eliminate this situation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an anti-collision device on a T-shaped conveyor belt to avoid the collision problem caused by the synchronous transmission of two boxes, in order to address the shortcomings of the existing technology.

[0004] The present invention provides an anti-collision device for a T-shaped conveyor belt, comprising a main control unit, a first through-beam photoelectric sensor installed on one side of the T-shaped conveyor belt, a second through-beam photoelectric sensor installed on the other side of the T-shaped conveyor belt, and a blocking component disposed on the side of the second through-beam photoelectric sensor near the convergence point of the T-shaped conveyor belt.

[0005] The blocking assembly includes a mounting plate, a driver, a mounting rod, and a blocking rod. The mounting plate is fixedly mounted on one side of the T-shaped conveyor belt, the driver is fixedly mounted on the mounting plate, and the driving end of the driver is fixedly mounted with the mounting rod. A guide rod is movably inserted into the mounting rod, and the blocking rod is fixed to the end of the guide rod. A spring is provided between the blocking rod and the mounting rod. A contactor is provided between the blocking rod and the mounting rod. The contactor, the first through-beam photoelectric sensor, and the second through-beam photoelectric sensor are all electrically connected to the signal acquisition terminal of the main control unit. The output terminal of the main control unit is electrically connected to the control terminal of the driver.

[0006] Preferably, the contactor includes a mounting base, a first conductor, and a second conductor; the mounting base is fixedly mounted on a mounting rod, the first conductor is fixedly mounted on the mounting base, and a second conductor corresponding to the first conductor is fixedly mounted on the blocking rod; the first conductor is connected to a signal acquisition terminal of the main control unit, and the second conductor is grounded.

[0007] Preferably, a fatigue detection component is provided between the barrier bar and the mounting bar.

[0008] Preferably, the fatigue detection assembly includes a slide rod and a conductor sleeve; one end of the slide rod is fixed to the barrier bar, the conductor sleeve is fixed below the mounting base, the other end of the slide rod is slidably inserted into the conductor sleeve, a conductive part is provided on the slide rod between the conductor sleeve and the barrier bar, the conductive part is grounded, a spring fatigue detection gap is provided between the conductive part and the conductor sleeve, and a conductor block that can contact the conductor sleeve is fixed on the mounting plate, the conductor block being electrically connected to another signal acquisition terminal of the main control unit.

[0009] Preferably, the mounting plate has a groove that corresponds to the moving trajectory of the conductor sleeve.

[0010] Preferably, the mounting rod has a clearance hole that matches the sliding rod.

[0011] Beneficial effects

[0012] The advantages of this utility model are:

[0013] 1. Through-beam photoelectric sensors are installed on both conveyor belts of the T-shaped conveyor belt, and a blocking component is installed on one of the belts. The through-beam photoelectric sensors detect the position of the boxes on the belt, and when the distance between the two boxes and the convergence point of the T-shaped conveyor belt is consistent, the blocking component blocks one of the boxes, causing its transmission to lag behind the other box, thus avoiding the collision problem caused by the synchronous transmission of the two boxes.

[0014] 2. The barrier assembly consists of a mounting plate, a driver, a mounting rod, a spring, a contactor, and a barrier bar. The spring, located between the mounting rod and the barrier bar, not only provides cushioning when the box collides with the barrier bar, but also controls the blocking time of the box, thus improving the reliability of the anti-collision device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the anti-collision device of this utility model in its initial state;

[0016] Figure 2 This is a schematic diagram of the installation structure of the contactor and fatigue detection component of this utility model;

[0017] Figure 3 This is a structural diagram of the anti-collision device of this utility model in use.

[0018] Among them: 1-T-type conveyor belt, 2-first through-beam photoelectric sensor, 3-second through-beam photoelectric sensor, 4-mounting plate, 5-driver, 6-mounting rod, 7-guide rod, 8-barrier rod, 9-contactor, 10-spring, 11-groove, 12-slide rod, 13-conductive part, 14-conductor sleeve, 15-conductor block, 16-clearing hole, 17-box, 92-mounting base, 93-first conductor, 94-second conductor. Detailed Implementation

[0019] The present invention will be further described below with reference to embodiments, but this does not constitute any limitation on the present invention. Any limited modifications made by any person within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0020] See Figures 1-3 The present invention provides an anti-collision device for a T-shaped conveyor belt, comprising a main control unit, a first through-beam photoelectric sensor 2 installed on one side of the T-shaped conveyor belt 1, a second through-beam photoelectric sensor 3 installed on the other side of the T-shaped conveyor belt 1, and a blocking component disposed on the side of the second through-beam photoelectric sensor 3 near the confluence of the T-shaped conveyor belt 1.

[0021] The main control unit can be a PLC or a more cost-effective microcontroller and its minimum system. The following will describe the main control unit using a microcontroller and its minimum system. The first through-beam photoelectric sensor 2 and the second through-beam photoelectric sensor 3 are at the same distance from the point where the T-shaped conveyor belt 1 converges.

[0022] The specific structure of the blocking assembly includes a mounting plate 4, a driver 5, a mounting rod 6, and a blocking rod 8. The mounting plate 4 is fixedly mounted on one side of the T-shaped conveyor belt 1. The driver 5 is fixedly mounted on the mounting plate 4. The driving end of the driver 5 is fixedly mounted with the mounting rod 6. A guide rod 7 is movably inserted into the mounting rod 6. The blocking rod 8 is fixed to the end of the guide rod 7. A spring 10 is provided between the blocking rod 8 and the mounting rod 6. A contactor 9 is provided between the blocking rod 8 and the mounting rod 6. The contactor 9, the first through-beam photoelectric sensor 2, and the second through-beam photoelectric sensor 3 are all connected one-to-one with three I / O pins of the microcontroller. The other I / O pins of the microcontroller are electrically connected to the control terminal of the driver 5. In this embodiment, the driver 5 is a stepper motor, and the microcontroller is connected to the stepper motor through a motor controller.

[0023] Initial state as Figure 1 As shown, the blocking component is located on one side of the T-shaped conveyor belt 1 and will not obstruct the boxes being conveyed on the T-shaped conveyor belt 1. When the microcontroller simultaneously receives electrical signals from the first through-beam photoelectric sensor 2 and the second through-beam photoelectric sensor 3, it indicates that boxes 17 have been detected at the same distance from the converging point on both sides of the T-shaped conveyor belt 1. If conveyed in this manner, the two boxes 17 will collide at the converging point. At this time, the microcontroller will send a control signal to the motor controller to drive the stepper motor to rotate the blocking component. The rotated blocking component is as follows: Figure 3As shown, both the mounting rod 6 and the blocking rod 8 intercept the boxes 17 on one of the T-shaped conveyor belts 1, thus blocking the conveyor belt 17 and causing it to lag behind the boxes 17 on the other belt. When the blocking rod 8 blocks the box 17, the box 17, affected by the conveyor belt, will squeeze the blocking rod 8, compressing the spring 10 between it and the mounting rod 6, and ultimately triggering the contactor 9 between them. After receiving the signal from the contactor 9, the microcontroller will generate a control signal to control the stepper motor to reverse drive the blocking assembly to reset, allowing the boxes on that belt to be conveyed normally. At this time, the unblocked box will be at least one box position ahead of the blocked box in the conveyor position, i.e., the width of the box, thus avoiding the problem of collision between the two boxes.

[0024] It should be noted that the blocking time of the box by the barrier assembly is determined by spring 10. Therefore, when selecting spring 10, it is necessary to ensure that the time from when the box contacts the barrier bar 8 to when the contactor 9 is triggered is greater than the time it takes for the box to move one box position. According to this guideline, the parameters of spring 10, such as length and diameter, can be determined through multiple routine tests.

[0025] In this embodiment, the contactor 9 includes a mounting base 92, a first conductor 93, and a second conductor 94. The mounting base 92 is fixedly mounted on the mounting rod 6, the first conductor 93 is fixedly mounted on the mounting base 92, and the second conductor 94, corresponding to the first conductor 93, is fixedly mounted on the barrier rod 8. The first conductor 93 is connected to a signal acquisition terminal of the main control unit, and the second conductor 94 is grounded. The microcontroller pin connected to the first conductor 93 is at a high level. When the two conductors come into contact, the level of this pin is pulled low, thereby causing the microcontroller to detect that the contactor 9 has been triggered. This contactor design eliminates the need for anti-collision and buffer structures, resulting in a longer service life and higher reliability compared to traditional contact switch structures.

[0026] In this embodiment, a fatigue detection component is provided between the barrier bar 8 and the mounting rod 6. This component is used to detect the fatigue of the spring 10 and prevent the spring 10 from becoming too long due to metal fatigue, which would cause the initial distance between the barrier bar 8 and the mounting rod 6 to decrease and result in insufficient blocking time for the box.

[0027] Specifically, the fatigue detection assembly includes a slide rod 12 and a conductor sleeve 14. One end of the slide rod 12 is fixed to the stop bar 8, and the conductor sleeve 14 is fixed below the mounting base 92. The other end of the slide rod 12 is slidably inserted into the conductor sleeve 14. A conductive part 13 is provided on the slide rod 12 between the conductor sleeve 14 and the stop bar 8. The conductive part 13 is grounded, and a spring fatigue detection gap is provided between the conductive part 13 and the conductor sleeve 14. A conductor block 15 that can contact the conductor sleeve 14 is fixed on the mounting plate 4. The conductor block 15 is electrically connected to another signal acquisition terminal of the main control unit. The mounting plate 4 has a groove 11 that matches the movement trajectory of the conductor sleeve 14, and the conductor block 15 is fixed at the end of the groove 11 away from the belt body.

[0028] The pin of the microcontroller connected to conductor block 15 is at a high level. Initially, conductor sleeve 14 is in contact with conductor block 15, making conductor sleeve 14 energized. If conductor sleeve 14 is not in contact with conductive part 13 in this state, it indicates that spring 10 is in normal condition. However, if conductor sleeve 14 is in contact with conductive part 13 initially, and the corresponding pin of the microcontroller is at a low level, it indicates that spring 10 has experienced metal fatigue and needs replacement. To serve as a warning, an alarm can be connected to the microcontroller for alarm activation. It should be noted that a current-limiting resistor must be connected in series with the pins connecting the microcontroller to conductor block 15 and the first conductor 93 to prevent short circuits to ground. The application of current-limiting resistors and alarms in microcontrollers is a well-known technical method, and therefore will not be discussed further in this paper.

[0029] Preferably, the mounting rod 6 has a clearance hole 16 that matches the slide rod 12 to prevent the mounting rod 6 from blocking the movement of the slide rod 12.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A collision prevention device on a T-shaped conveyor belt, characterized by, It includes a main control unit, a first through-beam photoelectric sensor (2) installed on one side of the T-shaped conveyor belt (1), a second through-beam photoelectric sensor (3) installed on the other side of the T-shaped conveyor belt (1), and a blocking assembly located on the side of the second through-beam photoelectric sensor (3) near the confluence of the T-shaped conveyor belt (1). The blocking assembly includes a mounting plate (4), a driver (5), a mounting rod (6), and a blocking rod (8). The mounting plate (4) is fixedly installed on one side of the T-shaped conveyor belt (1). The driver (5) is fixedly installed on the mounting plate (4). The driving end of the driver (5) is fixedly installed with the mounting rod (6). A guide rod (7) is movably inserted into the mounting rod (6). The blocking rod (8) is fixed at the end of the guide rod (7). A spring (10) is provided between the blocking rod (8) and the mounting rod (6). A contactor (9) is provided between the blocking rod (8) and the mounting rod (6). The contactor (9), the first through-beam photoelectric sensor (2), and the second through-beam photoelectric sensor (3) are all electrically connected to the signal acquisition end of the main control unit. The output end of the main control unit is electrically connected to the control end of the driver (5).

2. The anti-collision device for a T-shaped conveyor belt according to claim 1, characterized in that, The contactor (9) includes a mounting base (92), a first conductor (93), and a second conductor (94); the mounting base (92) is fixedly mounted on the mounting rod (6), the first conductor (93) is fixedly mounted on the mounting base (92), and the second conductor (94) corresponding to the first conductor (93) is fixedly mounted on the barrier rod (8). The first conductor (93) is connected to a signal acquisition terminal of the main control unit, and the second conductor (94) is grounded.

3. The anti-collision device for a T-shaped conveyor belt according to claim 1, characterized in that, A fatigue detection component is provided between the barrier bar (8) and the mounting bar (6).

4. The anti-collision device for a T-shaped conveyor belt according to claim 3, characterized in that, The fatigue detection assembly includes a slide rod (12) and a conductor sleeve (14); one end of the slide rod (12) is fixed on the barrier rod (8), the conductor sleeve (14) is fixed below the mounting base (92), the other end of the slide rod (12) is slidably inserted into the conductor sleeve (14), a conductive part (13) is provided on the slide rod (12) between the conductor sleeve (14) and the barrier rod (8), the conductive part (13) is grounded, a spring fatigue detection gap is provided between the conductive part (13) and the conductor sleeve (14), and a conductor block (15) that can contact the conductor sleeve (14) is fixed on the mounting plate (4), and the conductor block (15) is electrically connected to another signal acquisition terminal of the main control unit.

5. The anti-collision device for a T-shaped conveyor belt according to claim 4, characterized in that, The mounting plate (4) has a groove (11) that matches the movement trajectory of the conductor block (15).

6. The anti-collision device for a T-shaped conveyor belt according to claim 4, characterized in that, The mounting rod (6) has a clearance hole (16) that matches the slide rod (12).

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