A high-precision automatic cutting method for gypsum board edge sealing tape

Abstract

This invention discloses a high-precision automatic cutting method for gypsum board edge banding. In each cutting cycle, the method includes: a pusher distance sensor detecting when a pusher trolley between two gypsum boards reaches the cutting area outputs a first distance signal; a controller controlling the conveyor to stop based on the first distance signal, the pusher distance sensor detecting the distance between itself and the pusher trolley, and outputting a second distance signal; and the controller controlling the slide cutter to slide until aligned with the pusher trolley, at which point the slide cutter cuts the edge banding between the two gypsum boards in the center. This invention utilizes distance measurement positioning to determine the gap position between two adjacent gypsum boards by measuring the position of the pusher trolley when it stops. Based on this measurement, the slide cutter is controlled to move to the corresponding position, ensuring that the slide cutter cuts the edge banding in the middle of the gap between adjacent gypsum boards each time, guaranteeing that the cut length of the edge banding on each gypsum board is consistent.

Description

Technical Field

[0001] This invention relates to the field of gypsum board manufacturing technology, specifically to a high-precision automatic cutting method for gypsum board edge banding. Background Technology

[0002] Gypsum board edge banding typically involves feeding multiple gypsum boards sequentially at fixed intervals to an edge banding machine. The machine then applies edge banding tape to the sidewalls of the gypsum boards, connecting adjacent boards. Therefore, it is necessary to cut the edge banding tape between adjacent boards to separate them.

[0003] Currently, the commonly used method for automatically cutting edge banding tape mainly adopts the seam-finding cutting method. That is, the cutting mechanism that moves along the gypsum board conveying direction is equipped with a photoelectric sensor. When the cutting mechanism moves to find the gap between two gypsum boards, the photoelectric sensor detects the gap and stops the movement of the cutting mechanism and the conveyor belt of the gypsum board. The cutting mechanism then cuts the edge banding tape at that point.

[0004] In this seam-finding cutting method, during operation, the photoelectric sensor moves from one side of the seam to the seam to obtain the light transmission signal. At this time, the stopping point of the cutting mechanism is biased to one side of the seam, causing the cutting mechanism to cut the edge banding tape to one side, resulting in inconsistent lengths of the edge banding tape ends on the two gypsum boards.

[0005] In particular, gypsum boards may slip slightly when the conveying inertia stops, and the gap between adjacent gypsum boards is generally small (within 5mm), and each gypsum board may have a different sliding distance, making it difficult for the cutting mechanism to accurately align with the middle position of the gap, resulting in inconsistent lengths of the edge banding of each gypsum board.

[0006] Therefore, the current method of automatically cutting the edge banding tape by finding the seam makes it difficult for the cutting mechanism to accurately stop in the middle of the gap between two adjacent gypsum boards, thus making it difficult to ensure that the cut end of the edge banding tape of each gypsum board is of the same length. Summary of the Invention

[0007] The purpose of this invention is to provide a high-precision automatic cutting method for gypsum board edge banding, so as to solve the technical problem in the prior art that the cutting mechanism is difficult to accurately stop in the middle of the gap between two adjacent gypsum boards, resulting in inconsistent lengths of the cut end of the edge banding of each gypsum board.

[0008] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: A high-precision automatic cutting method for gypsum board edge banding tape, comprising the following steps in each cutting cycle: When the pusher distance sensor detects that the pusher trolley between two adjacent gypsum boards has reached the cutting area, it outputs the first distance signal. The controller controls the gypsum board conveyor to stop according to the first distance signal. After the gypsum board conveyor stops, the push plate distance sensor detects the distance between it and the push plate trolley and outputs the second distance signal. The controller controls the slide cutter to slide horizontally on both sides of the gypsum board conveyor, parallel to the direction of gypsum board conveying, based on the second distance signal. When the slide cutter slides to align with the push plate trolley according to the second distance signal, the slide cutter moves and cuts the edge banding between the two gypsum boards; After the slide cutter resets its cutting action, the controller controls the gypsum board conveyor to continue conveying gypsum board. The pusher trolley is used to keep the spacing between two adjacent gypsum boards fixed and moves with the gypsum boards during transport.

[0009] In a preferred embodiment of the present invention, the slide cutter is implemented by a motor, a lead screw pair, a track section, a slide section, and a cutting section. The track section is mounted on the side frame of the gypsum board conveyor, the lead screw pair is rotatably mounted on the end wall of the track section, the slide section is mounted on the lead screw pair and slides on the track section, and the cutting section is mounted on the slide section. The motor is controlled by the controller to rotate the lead screw pair and drive the slide and the cutting part to slide horizontally parallel to the direction of plasterboard conveying.

[0010] In a preferred embodiment of the present invention, the distance between the end of the track portion and the push plate distance sensor is fixed, and the distance between the cutting portion and the push plate distance sensor changes when the slide portion moves on the track portion. Specifically, when the cutting section moves to a distance equal to the distance value fed back by the second distance signal, the sliding table stops and the cutting section moves.

[0011] As a preferred embodiment of the present invention, the distance between the cutting part and the push plate distance sensor is detected in real time and a third distance signal is output, and the third distance signal is fed back to the controller in real time; The controller controls the slide section to make fine adjustments based on the difference between the feedback distance value of the third distance signal and the feedback distance value of the second distance signal.

[0012] In a preferred embodiment of the present invention, the distance between the cutting part and the push plate distance sensor is realized by the cutter distance sensor, which is disposed on the cutting part. The sensing end face of the cutter distance sensor is flush with the side wall of the cutting part near the push plate distance sensor, and the thickness of the cutting part is equal to the thickness of the push plate trolley.

[0013] In a preferred embodiment of the present invention, the push plate distance sensor is mounted on the downstream frame of the gypsum board conveyor via a bracket, and the cutter distance sensor measures the distance between itself and the push plate distance sensor via a reference panel. The reference panel is mounted on the bracket of the push plate ranging sensor, and the reference panel is flush with the sensing end face of the push plate ranging sensor.

[0014] In a preferred embodiment of the present invention, the cutting area is determined by the distance between the pusher plate distance sensor and the pusher plate trolley, specifically including: At the beginning of each cutting cycle, if the push plate distance sensor detects that the distance between it and the push plate trolley is greater than the distance from the push plate distance sensor to the end of the track that is away from the push plate distance sensor, no signal is output; If the push plate distance sensor detects that the distance between itself and the push plate trolley is less than the distance from the push plate distance sensor to the end of the track that is away from the push plate distance sensor, it outputs a first distance signal. In each cutting cycle, the cycle ends when the cutting part is activated, and continues until the detection value of the push plate distance sensor suddenly increases, at which point the next cycle begins.

[0015] In a preferred embodiment of the present invention, the controller controls the cutting part to move by means of a cutter and a cylinder. The fixed end of the cylinder is disposed on the slide, the cutter is disposed on the movable end of the cylinder, and the width of the cutter is greater than the width of the gypsum board edge banding. The steps of controlling the cutting unit's movement by the controller include: When the cutter is aligned with the push plate trolley, the controller controls the cylinder to operate; When the cylinder pushes the cutter to a preset position and cuts the edge banding tape, the controller controls the cylinder to reset.

[0016] In a preferred embodiment of the present invention, the cylinder reaches a preset position by means of a limit sensor, the limit sensor is disposed at the moving end of the cylinder, the cutter protrudes from the limit sensor, and the upper end of the cutter protrudes from the moving end of the cylinder, and the limit sensor is located in the lower area of ​​the plasterboard. The step of the controller controlling the cylinder cutting and resetting includes: The controller controls the cylinder to push the cutter toward the edge banding tape, and the cutter cuts the edge banding tape with its upper blade protruding from the moving end of the cylinder; After the edge banding tape is cut by the cutter, the limit sensor is pushed by the cylinder to the bottom of the gypsum board; The limit sensor detects the plasterboard and outputs a reset signal to the controller; The controller controls the cylinder to reset.

[0017] In a preferred embodiment of the present invention, the cylinder reset detection is achieved by a reset sensor, which is disposed on the side wall of the moving end of the cylinder and protrudes toward the fixed end of the cylinder, with the sensing surface of the reset sensor facing inward. The step of the controller controlling the cylinder to reset includes: After receiving the reset signal output by the limit sensor, the controller controls the cylinder to reset. The reset sensor moves back with the moving end of the cylinder, and when the reset sensor senses the fixed end of the cylinder, it outputs a reset completion signal to the controller. The controller starts the gypsum board conveyor based on the reset completion signal.

[0018] Compared with the prior art, the present invention has the following advantages: This invention utilizes a distance measurement and positioning method to determine the gap position between two adjacent gypsum boards by measuring the position when the pusher trolley stops. Based on the measured position when the pusher trolley stops, the slide cutter is controlled to move to the corresponding position so that the slide cutter cuts the edge banding strip in the middle of the gap between two adjacent gypsum boards each time, ensuring that the edge banding strip of each gypsum board is of the same length. Attached Figure Description

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] Figure 1 This is a flowchart illustrating the steps of a high-precision automatic cutting method for gypsum board edge banding provided in an embodiment of the present invention. Figure 2 A schematic diagram of the distance measurement of the push plate distance sensor in the high-precision automatic cutting method for gypsum board edge banding provided in the embodiments of the present invention; Figure 3A schematic diagram of the distance measurement of the cutter distance sensor in the high-precision automatic cutting method for gypsum board edge banding provided in this embodiment of the invention; Figure 4 This is a schematic diagram illustrating the cutting and resetting process of the high-precision automatic cutting method for gypsum board edge banding provided in an embodiment of the present invention.

[0021] The labels in the diagram represent the following: 1-Push plate ranging sensor; 2-Push plate trolley; 3-Slide table cutter; 11-Reference panel; 31-Motor; 32-Lead screw pair; 33-Railway section; 34-Slide section; 35-Cutting section; 351-Cylinder; 352-Cutter; 353-Cutter distance sensor; 354-Limit sensor; 355-Reset sensor. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figure 1 and Figure 2 As shown, this invention provides a high-precision automatic cutting method for gypsum board edge banding, comprising the following steps in each cutting cycle: When the push plate distance sensor 1 detects that the push plate trolley 2 between two adjacent gypsum boards has reached the cutting area, it outputs the first distance signal. The controller stops the gypsum board conveyor according to the first distance signal. After the gypsum board conveyor stops, the push plate distance sensor 1 detects the distance between itself and the push plate trolley 2 and outputs the second distance signal. The controller controls the slide cutter 3 to slide horizontally on both sides of the gypsum board conveyor, parallel to the direction of gypsum board conveying, based on the second distance signal. When the slide cutter 3 slides to align with the push plate trolley 2 according to the second distance signal, the slide cutter 3 moves and cuts the edge banding between the two gypsum boards; After the cutting action of the slide cutter 3 is reset, the controller controls the gypsum board conveyor to continue conveying gypsum board; The pusher trolley 2 is used to keep the spacing between two adjacent gypsum boards fixed and moves with the gypsum boards being transported.

[0024] The automatic cutting method in this embodiment mainly utilizes the push plate distance sensor 1 to detect the position of the push plate trolley 2 used to separate two adjacent gypsum boards. When the push plate distance sensor 1 detects that the push plate trolley 2 has reached the cutting area, the controller controls the gypsum board conveyor to stop according to the first distance signal output by the push plate distance sensor 1. After stopping, the push plate distance sensor 1 detects and outputs a second distance signal. Then, the controller controls the slide cutter 3 to move to a position flush with the push plate trolley 2 according to the second distance signal, cutting the edge banding between the two gypsum boards. This achieves a centered cut of the edge banding, improving the accuracy of the edge banding cut and avoiding long broken ends of the edge banding.

[0025] The commonly used automatic cutting method usually uses a sensor on the slide cutter 3 to detect the gap between two plasterboards during the movement of the slide cutter 3. When the gap is detected, the slide cutter 3 stops moving and controls the cutter 352 to cut the edge banding.

[0026] However, in commonly used automatic cutting methods, since the sensor moves with the slide cutter 3, the slide cutter 3 stops moving after detecting the gap. At this time, the cutter 352 is located on one side of the gap (the side that the slide cutter 3 moves towards the gap). Cutting at this time will result in one end of the edge banding of the two plasterboards being longer and the other end being shorter, resulting in uneven edge banding.

[0027] Compared to existing automatic cutting methods, the automatic cutting method of this embodiment can measure whether the position (first distance signal) of the pusher trolley 2 used to fix and separate the two gypsum boards has reached the cutting area, and then detect the position of the gap between the two gypsum boards after stopping (second distance signal). Based on the detection of the position of the gap, the slide cutter 3 is controlled to move to the middle of the gap and cut, so that the edge banding of the two gypsum boards is cut off evenly and shorter, thereby making the edge banding of the gypsum boards neater.

[0028] Among them, the (gypsum board) pusher trolley 2 is a spacer plate that is equidistantly installed on the belt of the belt conveyor.

[0029] The slide cutter 3 is moved by the controller according to the second distance signal. In order to ensure that the slide cutter 3 can move accurately to a position flush with the push plate trolley 2, the following preferred embodiment is provided.

[0030] like Figure 2 As shown, the slide cutter 3 is realized by a motor 31, a lead screw pair 32, a track part 33, a slide part 34 and a cutting part 35. The track part 33 is installed on the side frame of the gypsum board conveyor. The lead screw pair 32 is rotatably mounted on the end wall of the track part 33. The slide part 34 is mounted on the lead screw pair 32 and slides on the track part 33. The cutting part 35 is mounted on the slide part 34. The motor 31 is controlled by the controller to rotate the lead screw pair 32 and drive the slide section 34 and the cutting section 35 to slide horizontally parallel to the direction of gypsum board conveying.

[0031] Specifically, the motor 31 is a stepper motor. The controller controls the rotation angle of the motor 31 (stepper motor) to control the number of rotations of the lead screw pair 32, so as to precisely control the sliding distance of the slide section 34, so that the slide section 34 can drive the cutting section 35 to move to the same level as the push plate trolley 2, thereby achieving centered and average cutting.

[0032] The advantage of using a stepper motor to drive the slide cutter 3 is its high precision, and it can be achieved through open-loop control, making the control program simple.

[0033] When the slide section 34 of the slide cutter 3 moves on the track section 33, it can change the distance between the cutting section 35 and the push plate sensor. In order to enable the cutting section 35 to move accurately to be flush with the push plate trolley 2, the following preferred embodiment is provided.

[0034] like Figure 2 As shown, the distance between the end of the track section 33 and the push plate distance sensor 1 is fixed. When the slide section 34 moves on the track section 33, the distance between the cutting section 35 and the push plate distance sensor 1 changes. Specifically, when the cutting section 35 moves to a distance equal to the distance value fed back by the second distance signal, the slide section 34 stops and the cutting section 35 moves.

[0035] Specifically, since the distance between the end of the track section 33 (the end away from the push plate distance sensor 1) and the push plate distance sensor 1 is fixed and is a known value, the controller controls the movement distance of the slide section 34. The distance that the slide section 34 moves is determined by the difference between the fixed distance between the end of the track section 33 and the push plate distance sensor 1 and the measured distance of the push plate trolley 2 (the distance value fed back by the second distance signal).

[0036] The controller inputs a movement command based on the difference, and directly drives the cutting part 35 to move the corresponding distance via a stepper motor, thereby achieving precise cutting of the edge banding tape.

[0037] However, because the starting frequency of a stepper motor is not high (to avoid step loss), the difference between the starting frequency and the operating frequency is significant. Since the speed of the stepper motor is controlled by the input pulse frequency, the stepper motor cannot achieve a high dynamic response. Therefore, the following preferred embodiment is provided.

[0038] like Figure 3As shown, the distance between the cutting section 35 and the push plate distance sensor 1 is detected in real time and a third distance signal is output. The third distance signal is fed back to the controller in real time. The controller controls the slide section 34 to make fine adjustments based on the difference between the feedback distance value of the third distance signal and the feedback distance value of the second distance signal.

[0039] At this time, motor 31 can be a servo motor, which controls the rotation of lead screw 32. The dynamic response is faster, and the closed-loop control is formed through the feedback of the third distance signal, resulting in higher precision.

[0040] Specifically, when the cutting part 35 moves with the slide part 34, the distance between the cutting part 35 and the push plate distance sensor 1 is measured in real time, that is, the third distance signal. The controller compares the distance value fed back by the third distance signal with the distance value fed back by the second distance signal to obtain the difference between the two. The controller then controls the motor 31 (servo motor) to quickly rotate the lead screw pair 32 based on the feedback distance difference between the third distance signal and the second distance signal, thereby quickly driving the slide section 34 and the cutting section 35 to move until the feedback distance values ​​of the third distance signal and the second distance signal are equal. At this time, the cutting section 35 is flush with the push plate trolley 2, which enables the edge banding to be cut in the center quickly and accurately.

[0041] Since the push plate distance sensor 1 can only measure the distance of the push plate carriage 2 in a straight line and cannot simultaneously measure the distance between the push plate carriage 2 and the cutting part 35, it is necessary to add an additional sensor to detect the distance between the cutting part 35 and the push plate distance sensor 1. Therefore, the following preferred embodiment is provided.

[0042] like Figure 3 As shown, the distance between the cutting section 35 and the push plate distance sensor 1 is achieved by the cutter distance sensor 353, which is mounted on the cutting section 35. The sensing end face of the cutter distance sensor 353 is flush with the side wall of the cutting part 35 near the push plate distance sensor 1, and the thickness of the cutting part 35 is equal to the thickness of the push plate trolley 2.

[0043] The cutter distance sensor 353 installed on the cutting section 35 can detect the distance between the cutting section 35 and the push plate distance sensor 1 to obtain a third distance signal.

[0044] Since the sensing end face of the cutter distance sensor 353 is flush with the side wall of the cutting part 35 near the push plate distance sensor 1, the cutter distance sensor 353 actually measures the distance from the surface of the cutting part 35 (the cutter 352 therein) to the push plate distance sensor 1. Thus, when the feedback distance value of the third distance signal is equal to the feedback distance value of the second distance signal, the cutting part 35 (the cutter 352 therein) is flush with the push plate carriage 2.

[0045] If the thickness of the cutting part 35 (including the cutter 352) is equal to the thickness of the push plate trolley 2, then the cutting part 35 (including the blade of the cutter 352) is aligned with the middle of the gap between the two plasterboards, and the cutting part 35 can cut the edge banding between the two plasterboards in the middle.

[0046] Since the pusher carriage 2 and the cutting section 35 are not at the same height, the cutter distance sensor 353 and the pusher distance sensor 1 are also not at the same height. However, the cutter distance sensor 353 and the pusher distance sensor 1 need to measure the horizontal distance between the cutting section 35 and the pusher distance sensor 1, as well as the horizontal distance between the pusher carriage 2 and the pusher distance sensor 1, respectively. Therefore, the following preferred embodiment is provided.

[0047] like Figure 3 As shown, the push plate distance sensor 1 is mounted on the downstream frame of the gypsum board conveyor via a bracket, and the cutter distance sensor 353 measures the distance between itself and the push plate distance sensor 1 via the reference panel 11. The reference panel 11 is mounted on the bracket of the push plate ranging sensor 1, and the reference panel 11 is flush with the sensing end face of the push plate ranging sensor 1.

[0048] When the reference panel 11 coincides with the sensing end face of the push plate distance sensor 1, the distance between the cutter distance sensor 353 and the reference panel 11 is the horizontal distance between the cutter distance sensor 353 and the push plate distance sensor 1, thus reflecting the distance between the push plate distance sensor 1 and the cutting part 35.

[0049] Similarly, a cutter distance sensor 353, which is coplanar with the sensing end face of the push plate distance sensor 1, can be set at the push plate distance sensor 1 (bracket) to measure the position of the cutting part 35.

[0050] This method can be implemented without the reference panel 11, but the cutting part 35 needs to extend and retract during the cutting process, which may cause the cutting distance sensor 353 to lose the measurement signal of the cutting part 35 (the cutting blade 352 therein) (the cutting blade 352 of the cutting part 35 is moved out of the sensing area) and cause a malfunction. Of course, this can be solved by adjusting the program to not process the third distance signal of the cutting distance sensor 353 during the cutting process. The "fault prevention program" is more complicated than the method of measurement by the reference panel 11.

[0051] Cutting the edge banding between two gypsum boards requires the gypsum board conveyor to move the gap between the two gypsum boards to the cutting area for cutting with the cutter 352. Since it is difficult for the gypsum board conveyor to keep the gypsum boards stationary in the same position, precise centered cutting is achieved when the gypsum boards are stationary within a certain range. Therefore, the following preferred embodiment is provided.

[0052] like Figure 2 As shown, the cutting area is determined by the distance between the push plate distance sensor 1 and the push plate trolley 2, specifically including: At the beginning of each cutting cycle, if the distance between the push plate distance sensor 1 and the push plate trolley 2 is greater than the distance from the push plate distance sensor 1 to the end of the track section 33 away from the push plate distance sensor 1, no signal is output. If the push plate distance sensor 1 detects that the distance between it and the push plate trolley 2 is less than the distance from the push plate distance sensor 1 to the end of the track part 33 that is away from the push plate distance sensor 1, it outputs a first distance signal. In each cutting cycle, the cycle ends when the cutting part 35 moves, and continues until the detection value of the push plate distance sensor 1 suddenly increases, at which point the next cycle begins.

[0053] When the distance between the push plate distance sensor 1 and the push plate trolley 2 is greater than the distance from the end of the track section 33 away from the push plate distance sensor 1, the gap between the two plasterboards has not yet entered the track section 33 area, that is, it is in the position where the slide section 34 and the cutter 352 cannot move.

[0054] When the push plate distance sensor 1 detects that the distance between it and the push plate trolley 2 is less than the distance from the end of the track section 33 away from the push plate distance sensor 1, it outputs a distance signal only once. At this time, it indicates that the gap between the two gypsum boards is located in the section of the track section 33. After the controller controls the gypsum board conveyor to stop, the two gypsum boards stop moving and the gap between them is located in the section of the track section 33.

[0055] That is, the position located in the section of track 33 is the cutting area. After the cutting is completed, the current cycle ends; and when the push plate distance sensor 1 detects a value that is greater than the distance from the push plate distance sensor 1 to the end of track 33 away from the push plate distance sensor 1, the next cycle is started, which can realize the recording of the number of cuts.

[0056] There is an interval between two adjacent cycles, which is the process of detecting that the distance from the pusher plate distance sensor 1 to the pusher plate trolley 2 is continuously less than (distance decreasing) the distance from the pusher plate distance sensor 1 to the end of the track section 33 away from the pusher plate distance sensor 1, until the distance from the pusher plate distance sensor 1 to the pusher plate trolley 2 suddenly becomes greater than the distance from the pusher plate distance sensor 1 to the end of the track section 33 away from the pusher plate distance sensor 1. This process is the return process of the pusher plate trolley 2 from bottom to top on the belt conveyor (existing structure).

[0057] By setting the trigger threshold output by the push plate distance sensor 1, the cutting area is divided, which not only prevents the gap between two plasterboards from exceeding the working range of the slide table cutter 3, but also eliminates the need for other sensors to detect and limit, reducing costs and making the program setup simpler.

[0058] When cutting the edge banding tape, the cutting part 35 of the slide cutter 3 needs to extend and retract to complete the cutting and resetting, as detailed below.

[0059] like Figure 4 As shown, the controller controls the cutting part 35 to move through the cutter 352 and the cylinder 351. The fixed end of the cylinder 351 is set on the slide 34, and the cutter 352 is set on the movable end of the cylinder 351. The width of the cutter 352 is greater than the width of the gypsum board edge banding. The steps by which the controller controls the movement of the cutting unit 35 include: When the cutter 352 is aligned with the push plate trolley 2, the controller controls the cylinder 351 to work. When the cylinder 351 pushes the cutter 352 to the preset position and cuts the edge banding tape, the controller controls the cylinder 351 to reset.

[0060] The width of the cutter 352 is greater than the width of the gypsum board edge banding tape to ensure that the cutter 352 can completely cut the edge banding tape.

[0061] Specifically, under the control of the controller, the cylinder 351 can push the cutter 352 to move towards the edge banding of the gap between the two plasterboards, thereby squeezing and cutting the edge banding at the gap.

[0062] After the edge banding tape is cut, the controller controls the cylinder 351 to reset, so that the cutter 352 can be moved out from between the two gypsum boards, allowing the gypsum board conveyor to continue conveying the gypsum boards.

[0063] During the process of cutting the edge banding tape under the control of the controller, the cylinder 351 needs to push the cutter 352 to a preset position to ensure that the cutter 352 completely cuts the edge banding tape. At this time, the cutter 352 will be placed in the gap between the two plasterboards. Moreover, the shorter the distance that the cutter 352 is pushed by the cylinder 351 after cutting, the shorter the action time of the cutting part 35, thereby improving the cutting efficiency and increasing production efficiency.

[0064] Therefore, it is necessary to stop the cylinder 351 from continuing to push the cutter 352 after the cutter 352 cuts the edge banding tape. Therefore, in order to ensure that the cutter 352 can completely cut the edge banding tape each time and stop in time after cutting, the following preferred embodiment is provided.

[0065] like Figure 4 As shown, the cylinder 351 reaches the preset position through the limit sensor 354. The limit sensor 354 is located at the moving end of the cylinder 351. The cutter 352 protrudes from the limit sensor 354, and the upper end of the cutter 352 protrudes from the moving end of the cylinder 351. The limit sensor 354 is located in the area below the plasterboard. The steps of the controller controlling the cylinder 351 to cut and reset include: The controller controls the cylinder 351 to push the cutter 352 to move towards the edge banding tape. The upper blade of the cutter 352, which protrudes from the moving end of the cylinder 351, cuts the edge banding tape. After the edge banding tape is cut by the cutter 352, the limit sensor 354 is pushed to the bottom of the gypsum board by the cylinder 351; Limit sensor 354 detects the plasterboard and outputs a reset signal to the controller; The controller resets cylinder 351.

[0066] Since the cylinder 351 is located below the plasterboard, the cutter 352 protrudes above the moving end of the cylinder 351 and can cut the edge banding above it.

[0067] The cutter 352 protrudes from the limit sensor 354, which can detect the gypsum board after the cutter 352 cuts the edge banding tape, and then feed back to the controller, so that the controller can control the cylinder 351 to stop in time while ensuring that the edge banding tape is cut.

[0068] Cylinder 351 operates continuously in the gypsum board production environment, and its constant operation on the production line will continuously push the dust that falls on the cylinder rod to accumulate at the cylinder opening. This may lead to incomplete resetting during long-term use, causing the cutter 352 to affect the conveying of gypsum board, resulting in the cutter 352 damaging the gypsum board during the conveying process or the gypsum board damaging the cutter 352.

[0069] Therefore, in order to avoid the gypsum board conveyor starting to transport gypsum board due to incomplete reset of the cutter 352, the following preferred embodiment is provided.

[0070] like Figure 4As shown, the cylinder 351 reset detection is achieved through the reset sensor 355. The reset sensor 355 is disposed on the side wall of the moving end of the cylinder 351, and the reset sensor 355 protrudes toward the fixed end of the cylinder 351, with the sensing surface of the reset sensor 355 facing inward. The steps for the controller to control the cylinder 351 to reset include: After receiving the reset signal output by the limit sensor 354, the controller controls the cylinder 351 to reset. The reset sensor 355 moves back along with the moving end of the cylinder 351. When the reset sensor 355 senses the fixed end of the cylinder 351, it outputs a reset completion signal to the controller. The controller starts the gypsum board conveyor based on the reset completion signal.

[0071] Specifically, the reset sensor 355 can sense the fixed end of the cylinder 351 after the moving end of the cylinder 351 has been fully reset. When the moving end of the cylinder 351 is separated from the fixed end by a certain position, the sensing end face of the reset sensor 355 loses the sensing of the fixed end of the cylinder 351, thus determining that the moving end of the cylinder 351 has not been fully reset. At this time, the reset sensor 355 does not output a reset signal, and the controller cannot control the gypsum board conveyor to start. This can realize the reset self-test of the cylinder 351 and also prevent the gypsum board conveyor from starting when the cylinder 351 has not been reset, thus avoiding safety accidents.

[0072] The aforementioned limit sensor 354 and reset sensor 355 are both proximity sensors.

[0073] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A high-precision automatic cutting method for gypsum board edge banding tape, characterized in that, Within each cutting cycle, the following are included: When the pusher distance sensor detects that the pusher trolley between two adjacent gypsum boards has reached the cutting area, it outputs the first distance signal. The controller controls the gypsum board conveyor to stop according to the first distance signal. After the gypsum board conveyor stops, the push plate distance sensor detects the distance between it and the push plate trolley and outputs the second distance signal. The controller controls the slide cutter to slide horizontally on both sides of the gypsum board conveyor, parallel to the direction of gypsum board conveying, based on the second distance signal. When the slide cutter slides to align with the push plate trolley according to the second distance signal, the slide cutter moves and cuts the edge banding between the two gypsum boards; After the slide cutter resets its cutting action, the controller controls the gypsum board conveyor to continue conveying gypsum board. The pusher trolley is used to maintain a fixed spacing between two adjacent gypsum boards and moves as the gypsum boards are conveyed. The slide table cutter is achieved through a motor, a lead screw pair, a track section, a slide table section, and a cutting section. The track section is mounted on the side frame of the gypsum board conveyor. The lead screw pair is rotatably mounted on the end wall of the track section. The slide table section is mounted on the lead screw pair and slides on the track section. The cutting section is mounted on the slide table section. The motor is controlled by the controller to rotate the lead screw pair and drive the slide and the cutting part to slide horizontally parallel to the direction of gypsum board conveying; The distance between the end of the track section and the push plate distance sensor is fixed. When the slide section moves on the track section, the distance between the cutting section and the push plate distance sensor changes. Specifically, when the cutting section moves to a distance equal to the distance value fed back by the second distance signal, the sliding table stops and the cutting section moves. The distance between the cutting section and the push plate distance sensor is detected in real time and a third distance signal is output. The third distance signal is fed back to the controller in real time. The controller controls the slide section to make fine adjustments based on the difference between the feedback distance value of the third distance signal and the feedback distance value of the second distance signal; The distance between the cutting section and the push plate distance sensor is achieved by the cutter distance sensor, which is installed on the cutting section. The sensing end face of the cutter distance sensor is flush with the side wall of the cutting part near the push plate distance sensor, and the thickness of the cutting part is equal to the thickness of the push plate trolley.

2. The high-precision automatic cutting method for gypsum board edge banding tape according to claim 1, characterized in that, The push plate distance sensor is mounted on the downstream frame of the gypsum board conveyor via a bracket, and the cutter distance sensor measures the distance between itself and the push plate distance sensor via a reference panel. The reference panel is mounted on the bracket of the push plate ranging sensor, and the reference panel is flush with the sensing end face of the push plate ranging sensor.

3. The high-precision automatic cutting method for gypsum board edge banding tape according to claim 2, characterized in that, The cutting area is determined by the distance between the push plate distance sensor and the push plate trolley, specifically including: At the beginning of each cutting cycle, if the push plate distance sensor detects that the distance between it and the push plate trolley is greater than the distance from the push plate distance sensor to the end of the track that is away from the push plate distance sensor, no signal is output; If the push plate distance sensor detects that the distance between itself and the push plate trolley is less than the distance from the push plate distance sensor to the end of the track that is away from the push plate distance sensor, it outputs a first distance signal. In each cutting cycle, the cycle ends when the cutting part is activated, and continues until the detection value of the push plate distance sensor suddenly increases, at which point the next cycle begins.

4. The high-precision automatic cutting method for gypsum board edge banding tape according to claim 2, characterized in that, The controller controls the cutting part's movement via a cutter and a cylinder. The fixed end of the cylinder is located on the slide, and the cutter is located on the movable end of the cylinder. The width of the cutter is greater than the width of the gypsum board edge banding. The steps of controlling the cutting unit's movement by the controller include: When the cutter is aligned with the push plate trolley, the controller controls the cylinder to operate; When the cylinder pushes the cutter to a preset position and cuts the edge banding tape, the controller controls the cylinder to reset.

5. The high-precision automatic cutting method for gypsum board edge banding tape according to claim 4, characterized in that, The cylinder reaches the preset position through a limit sensor, which is located at the moving end of the cylinder. The cutter protrudes from the limit sensor, and the upper end of the cutter protrudes from the moving end of the cylinder. The limit sensor is located in the area below the plasterboard. The step of the controller controlling the cylinder cutting and resetting includes: The controller controls the cylinder to push the cutter toward the edge banding tape, and the cutter cuts the edge banding tape with its upper blade protruding from the moving end of the cylinder; After the edge banding tape is cut by the cutter, the limit sensor is pushed by the cylinder to the bottom of the gypsum board; The limit sensor detects the plasterboard and outputs a reset signal to the controller; The controller controls the cylinder to reset.

6. The high-precision automatic cutting method for gypsum board edge banding tape according to claim 5, characterized in that, The cylinder reset detection is achieved through a reset sensor, which is disposed on the side wall of the moving end of the cylinder and protrudes toward the fixed end of the cylinder, with the sensing surface of the reset sensor facing inward. The step of the controller controlling the cylinder to reset includes: After receiving the reset signal output by the limit sensor, the controller controls the cylinder to reset. The reset sensor moves back with the moving end of the cylinder, and when the reset sensor senses the fixed end of the cylinder, it outputs a reset completion signal to the controller. The controller starts the gypsum board conveyor based on the reset completion signal.

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