Feeding control assembly of grooving machine and feeding control system of indentation grooving device

Abstract

The utility model provides a feeding control assembly of a grooving machine and a feeding control system of an indentation grooving device, the feeding control assembly of the grooving machine (10) comprises a first driving device, the first driving device comprises a first servo driving motor and a first servo driver, the first servo driver is connected with a programmable controller, and the first servo driving motor is connected with the programmable controller; the first driving device drives the first conveying belt to move in the first direction; the object induction sensor is connected with the first servo driver, the object induction sensor is arranged on the upstream of the grooving cutter, and the object induction sensor is configured to output a trigger signal to the first servo driver when detecting materials; the first servo driver receives the trigger signal and outputs the current actual position value of the first servo motor to the programmable controller; and the programmable controller receives the current actual position value and outputs the position correction value to the first servo driver.

Description

Technical Field

[0001] The present application relates to the technical field of indentation and grooving, and in particular to a feeding control component of a grooving machine and a feeding control system of an indentation and grooving device. Background Art

[0002] With the rise of e-commerce platforms, the express delivery industry has also grown. Most of the express delivery products are packed in cartons. As a result, the use of cartons has increased significantly. Cartons are made of cardboard, which is made through cutting, creasing, grooving, trimming, gluing, and molding processes.

[0003] Before the cardboard is boxed, it needs to be cut, crimped, grooved, trimmed, glued, and other processes. In order to meet the requirements of the boxing process, the position accuracy of the crimping position, groove position, and glue position of the cardboard needs to be controlled within a relatively high range. However, during the feeding process, the cardboard will inevitably slip and overshoot when moving on the conveyor belt, and due to the influence of various factors such as gear clearance and cutting length deviation, the grooving accuracy and glue dispensing accuracy are not up to the requirements and cannot be boxed. Summary of the invention

[0004] In view of this, the present application provides a feeding control component of a grooving machine and a feeding control system of an indentation and grooving device to at least partially solve the above problems.

[0005] In a first aspect, the present application provides a feeding control assembly of a slotting machine, wherein the slotting machine comprises a first conveyor belt and a slotting knife, and the feeding control assembly of the slotting machine comprises:

[0006] A first driving device, comprising a first servo driving motor and a first servo driver, wherein the first servo driver is connected to a programmable controller, and the first driving device drives the first conveyor belt to move along a first direction;

[0007] An object sensing sensor connected to the first servo driver, the object sensing sensor being arranged upstream of the grooving knife, and the object sensing sensor being arranged to output a trigger signal to the first servo driver when a material is detected;

[0008] The first servo driver receives the trigger signal and outputs the current actual position value of the first servo drive motor to the programmable controller; the programmable controller receives the current actual position value and outputs the position correction value to the first servo driver.

[0009] Optionally, the first servo driver is configured in an absolute position control mode, and the current actual position value and the position correction value are absolute position values.

[0010] Optionally, the upstream of the grooving machine is a creasing machine, which includes a second conveyor belt and a second drive device for driving the second conveyor belt, the second drive device includes a second servo drive motor and a second servo driver, wherein the second servo driver is connected to the programmable controller, and the programmable controller is configured as follows: when the second servo drive motor runs to the target position, the programmable controller sends a position return to zero instruction to the first servo driver, the target position of the second servo drive motor corresponds to the first end of the material being aligned with the reference position, the reference position is located upstream of the second end of the creasing machine and the distance ΔD1 from the second end of the creasing machine is between 0 and 100 mm.

[0011] Optionally, the reference position is the second end of the creasing machine.

[0012] Optionally, the installation position of the object sensing sensor is at a distance from the grooving knife between 100 mm and 300 mm.

[0013] Optionally, the object sensing sensor is a photoelectric sensor.

[0014] In a second aspect, the present application provides a feeding control system for a creasing and grooving device, the creasing and grooving device comprising a creasing machine and a grooving machine, wherein the grooving machine is located downstream of the creasing machine, the grooving machine comprises a first conveyor belt and a grooving knife, the creasing machine comprises a second conveyor belt, and the feeding control system comprises:

[0015] The feeding control assembly of the slotting machine mentioned above, wherein the first servo driver of the feeding control assembly of the slotting machine is connected to the programmable controller;

[0016] A feeding control component of the creasing machine, which is used to drive the second conveyor belt to move along the first direction, the feeding control component of the creasing machine includes a second servo drive motor and a second servo driver, wherein the second servo driver is connected to the programmable controller;

[0017] The programmable controller is configured as follows: when the second servo drive motor runs to the target position, the programmable controller sends a position return to zero instruction to the first servo drive and the second servo drive respectively, and the target position of the second servo drive motor corresponds to the first end of the material being aligned with the reference position, and the reference position is located upstream of the second end of the creasing machine and the distance ΔD1 from the second end of the creasing machine is between 0 and 100 mm.

[0018] Optionally, the second servo drive is configured in an absolute position control mode.

[0019] Optionally, there is a gap between the first end of the first conveyor belt and the second end of the second conveyor belt.

[0020] The feeding control component of the grooving machine and the feeding control system of the creasing and grooving device of the present application, by setting the object sensing sensor upstream of the grooving knife, the object sensing sensor cooperates with the servo drive device, and corrects the given position value of the first servo drive device according to the actual position value of the first servo drive when the object sensing sensor is triggered, so that the position correction is completed before the first end of the cardboard reaches the grooving knife, thereby meeting the position accuracy requirements of grooving and the dispensing position accuracy requirements of the subsequent process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a block diagram of a feeding control system of an indentation and grooving device according to an exemplary embodiment of the present application.

[0022] Figure 2 A schematic diagram of an exemplary indentation and grooving device.

[0023] Figure 3 Schematic diagram of cardboard formed by creasing machine and cardboard formed by grooving machine of the present application.

[0024] Figure 4 This is a schematic diagram of the principle of position compensation for the first servo driver in the present application.

[0025] List of reference numerals:

[0026] 10: Grooving machine;

[0027] 11: Grooving knife;

[0028] 12: Object sensing sensor;

[0029] 13: trimming axis;

[0030] 15: first conveyor belt;

[0031] 16: first driving device;

[0032] 161: first servo driver;

[0033] 162: first servo drive motor;

[0034] 20: creasing machine;

[0035] 211: Paper shaft on cardboard;

[0036] 212: nip roller;

[0037] 22: cutting axis;

[0038] 23: first indentation component;

[0039] 24: second indentation component;

[0040] 25: second conveyor belt;

[0041] 26: second driving device;

[0042] 261: second servo driver;

[0043] 262: second servo drive motor;

[0044] 30: Programmable controller;

[0045] 61: Cardboard formed by creasing machine;

[0046] 62: Cardboard formed by slotting machine;

[0047] 611: Indentation line:

[0048] 621: incision formed by the grooving knife;

[0049] 71: Cardboard;

[0050] 72: first end BB' of the slotting machine 10;

[0051] 80: First Direction

[0052] 90: Paperboard base paper device; DETAILED DESCRIPTION

[0053] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the embodiments of the present application should fall within the scope of protection of the embodiments of the present application.

[0054] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the case where there is no conflict between the embodiments, the following embodiments and the features in the embodiments can be combined with each other. The steps in the following method embodiments are only used for exemplary description and are not intended to limit the present invention.

[0055] In order to make those skilled in the art better understand the technical solutions in the embodiments of the present application, Figure 2 and Figure 3 The indentation and grooving process is introduced. Figure 2As shown, the cardboard base paper is stacked together in a Z shape, and the cardboard base paper is passed between the cardboard upper paper shaft 211 and the pressing roller 25, and the head end (first end) of the cardboard base paper is aligned with the cutting knife. The creasing conveying shaft moves at the same speed as the cardboard upper paper shaft 211, and the cardboard upper paper shaft 211 and the pressing shaft send the cardboard out through friction. Under the support of the conveyor belt, the cardboard moves along the first direction 80. The creasing machine 20 includes a cutting component and at least one creasing component, wherein the creasing component is used to form a creasing line perpendicular to the first direction 80 on the cardboard, and the cutting component is used to cut the base paper according to the cutting length Lx. The cardboard formed by the creasing machine 20 is as shown in FIG. Figure 3 As shown in 61 in FIG. 1 , the slotting machine 10 includes at least a slotting assembly and a trimming assembly. The slotting knife 11 cuts a cut of a certain width and depth at the position of the indentation line. These cuts are usually referred to as "slots" or "notches". Figure 3 62 in FIG. The indentation lines and the cuts work together to ensure that the paperboard can be folded and formed according to the predetermined shape and size. If the groove cutting position of the groove cutting machine 10 deviates, the carton cannot be folded according to the predetermined shape, causing the carton to deform or fail to be completely closed. Figure 2 It can be seen that the cardboard needs to be sent out through friction between the paper shaft 211 on the cardboard and the pressing shaft and carried by the conveyor belt to move forward. When the cardboard moves on the conveyor belt, it is inevitable that there will be slippage, overshoot and other phenomena. Under the influence of various factors such as gear clearance and cutting length deviation of the creasing machine 20, the position of the cardboard will deviate when it reaches the groove cutting machine 10, which will further cause the groove cutting position to deviate.

[0056] The device movement posture calibration scheme provided in each embodiment of the present application is described in detail below in conjunction with the accompanying drawings.

[0057] Example 1

[0058] Embodiment 1 is a feeding control component of a slotting machine 10, the slotting machine 10 comprises a first conveyor belt 15 and a slotting knife 11, the feeding control component of the slotting machine 10 comprises a first driving device 16 and an object sensing sensor 12, wherein the first driving device 16 comprises a first servo driving motor 162 and a first servo driver 161, the first servo driver 161 is connected to a programmable controller 30, and the first driving device 16 drives the first conveyor belt 15 to move along a first direction 80. The object sensing sensor 12 is connected to the first servo driver 161, the object sensing sensor 12 is arranged upstream of the slotting knife 11, and the object sensing sensor 12 is configured to output a trigger signal to the first servo driver 161 when a material is detected; the first servo driver 161 receives the trigger signal and outputs the current actual position value of the first servo driving motor to the programmable controller 30; the programmable controller 30 receives the current actual position value and outputs the position correction value to the first servo driver 161.

[0059] For ease of description, the first end is used to represent the creasing machine 20, the slotting machine 10 and the upstream end of the paperboard (i.e. Figure 2 The second end represents the downstream end of the creasing machine 20, the slotting machine 10 and the paperboard (i.e. Figure 2 When the first end of the paperboard is aligned with the object sensing sensor 12, the object sensing sensor 12 is triggered, and the position value of the first servo driver 161 is the actual position value P of the paperboard. Act Under ideal conditions, the actual position value P of the first servo driver 161 when the object sensing sensor 12 is triggered is Act Equal to the reference position value P Ref , the reference position value P Ref It is related to the installation position of the object sensing sensor 12 and is a known fixed value. However, due to mechanical reasons, the relative displacement between the cardboard and the conveyor belt causes the actual position value P Act With reference position value P Ref Not consistent, position offset ΔP = P Act -P Ref When the offset ΔP<0, it indicates that the cardboard has moved ahead too much, and when the offset>0, it indicates that the cardboard has moved behind too little. The programmable controller 30 compensates the position given value of the first servo driver 161 according to the offset, so that the position of the cardboard is corrected before the first end of the cardboard reaches the slotting knife 11, thereby meeting the position accuracy requirement of the slotting.

[0060] In the present application, by setting an object sensing sensor upstream of the grooving knife, the object sensing sensor cooperates with the servo drive device, and the given position value of the first servo drive device is corrected according to the actual position value of the first servo drive when the object sensing sensor is triggered, so that the position correction is completed before the first end of the cardboard reaches the grooving knife, thereby meeting the position accuracy requirements of the grooving and the dispensing position accuracy requirements of the subsequent process.

[0061] In some embodiments, the first servo driver is configured in an absolute position control mode, and the current actual position value and the position correction value are absolute position values. The first servo driver in this embodiment adopts an absolute position control mode, which can accurately feed materials according to the absolute position value, reduce positioning errors, and improve grooving accuracy.

[0062] In some embodiments, the upstream of the groove cutting machine 10 is a creasing machine 20, and the creasing machine 20 includes a second conveyor belt 25 and a second driving device 26 for driving the second conveyor belt 25, and the second driving device 26 includes a second servo drive motor 262 and a second servo driver 261, wherein the second servo driver 261 is connected to the programmable controller 30, such as Figure 1 The programmable controller 30 is configured as follows: when the second servo drive motor 262 runs to the target position, the programmable controller 30 sends a position return command to the first servo driver 161, and the target position of the second servo drive motor 262 corresponds to the first end of the material being aligned with the reference position, and the reference position is located upstream of the second end of the creasing machine 20 and the distance ΔD1 between the reference position and the second end of the creasing machine 20 is between 0 and 100 mm.

[0063] After the first servo drive receives the position return command, it will immediately clear the current encoder value. After completing the return to zero operation, all subsequent position control commands of the servo drive will be based on this newly set zero position. That is, when the control system requires the motor to move to a certain position, the position will be relative to the newly set origin position. Through the return to zero operation, the accumulated error is eliminated and the position deviation is corrected.

[0064] In some embodiments, the reference position is the second end of the creasing machine 20, i.e. Figure 2 AA' in.

[0065] Assume that the gap between the second end AA' of the creasing machine 20 and the first end BB' of the slotting machine 10 is ΔD2, the distance between the second end AA' of the creasing machine 20 and the cutting knife is L, the installation position of the object sensing sensor 12 is M1 away from the first end BB' of the slotting machine 10, and M2 away from the slotting knife 11. When the position value of the second drive device is L, the first end of the cardboard is theoretically aligned with the reference position (i.e., the second end AA' of the creasing machine 20), and the first servo driver 161 performs a position return operation. Under the synchronous movement of the first drive device 16 and the second drive device 26, the cardboard is transported from the creasing machine 20 to the slotting machine 10. Reference position value P Ref is the position value of the first driving servo when the object sensing sensor 12 is triggered under ideal conditions, P Ref =ΔD2+M1. However, due to the cumulative error, the relative displacement between the conveyor belt and the paperboard, the cutting error on the creasing machine 20, etc., the actual position value P of the first driving servo when the object sensing sensor 12 is triggered Act ≠P Ref , the programmable controller 30 can obtain the position correction value according to the deviation between the two and send it to the first drive servo.

[0066] In some embodiments, the installation position of the object sensing sensor 12 is 100 to 300 mm away from the grooving knife 11. Figure 4 As shown, the installation position and spacing of the object sensing sensor 12 are M2, and the position of the cardboard needs to be corrected according to the position correction value before the first indentation line of the cardboard (the indentation line close to the first end of the cardboard) reaches the grooving knife 11. Since the first drive device 16 needs to complete the position correction, deceleration and stop before the first indentation line reaches the grooving knife 11, if the value of M2 is too small, the position correction cannot be completed in time; if the value of M2 is too large, the movement distance of the cardboard is long, and a large error value may be generated, so that the position accuracy of the grooving cannot be met. Therefore, setting M2 to between 100 and 300 mm can not only complete the position correction before the first indentation line reaches the grooving knife 11, but also avoid the accumulation of position errors and affect the grooving accuracy.

[0067] In some embodiments, the object sensing sensor 12 is a photoelectric sensor.

[0068] The photoelectric sensor detects the cardboard in a non-contact manner, and has the advantages of high detection accuracy and fast response speed.

[0069] Example 2

[0070] Embodiment 2 provides a feeding control system for an indentation and grooving device, such as Figure 2As shown, the creasing and grooving device includes a creasing machine 20 and a grooving machine 10, wherein the grooving machine 10 is located downstream of the creasing machine 20, the grooving machine 10 includes a first conveyor belt 15 and a grooving knife 11, the creasing machine 20 includes a second conveyor belt 25, a cutting component and at least one creasing component, and the feeding control system includes:

[0071] The feeding control component of the slotting machine 10 in Example 1, wherein the first servo driver 161 of the feeding control component of the slotting machine 10 is connected to the programmable controller 30.

[0072] A feeding control component of the creasing machine 20, which is used to drive the second conveyor belt 25 to move along the first direction 80, and the feeding control component of the creasing machine 20 includes a second servo drive motor 262 and a second servo driver 261, wherein the second servo driver 261 is connected to the programmable controller 30;

[0073] The programmable controller 30 is configured as follows: when the second servo drive motor 262 runs to the target position, the programmable controller 30 sends a position return to zero instruction to the first servo drive 161 and the second servo drive 261 respectively, and the target position of the second servo drive motor (262) corresponds to the first end of the material being aligned with the reference position, and the reference position is located upstream of the second end of the creasing machine 20 and the distance ΔD1 between the reference position and the second end of the creasing machine 20 is between 0 and 100 mm.

[0074] In some implementations, the second servo driver 261 is configured in an absolute position control mode.

[0075] In some embodiments, there is a gap between the first end of the first conveyor belt 15 and the second end of the second conveyor belt 25. There is a certain gap between the first end BB' of the first conveyor belt 15 and the second end AA' of the second conveyor belt 25. The first conveyor belt 15 is controlled by the first driving device 16, and the second conveyor belt 25 is controlled by the feeding control component of the creasing machine 20. In this way, the creasing and grooving device is divided into two independent control units, thereby reducing the control span, simplifying the system architecture, improving the system stability, and enhancing the flexibility.

[0076] In some embodiments, the second servo drive motor (262) runs to the target position, and after the first servo drive 161 and the second servo drive 261 perform the position return operation, the first servo drive 161 and the second servo drive 261 synchronously run the cutting length Lx of the cardboard, thereby transferring the cardboard from the creasing machine 20 to the slotting machine 10. The first servo drive 161 and the second servo drive 261 simultaneously perform the zero return operation to eliminate the previous position deviation, so that the first servo drive 161 and the second servo drive 261 can synchronously run Lx, improving the synchronization of the two servo movements, thereby realizing the transfer of the cardboard from the creasing machine 20 to the slotting machine 10.

[0077] Nouns and pronouns relating to persons in this patent application are not limited to a specific gender.

[0078] The present invention has been shown and described in detail above through the accompanying drawings and preferred embodiments. However, the present application is not limited to these disclosed embodiments. Based on the above multiple embodiments, those skilled in the art can know that the code review methods in the above different embodiments can be combined to obtain more embodiments of the present invention, and these embodiments are also within the protection scope of the present invention.

Claims

1. A feeding control assembly for a slotting machine (10), characterized in that: The slotting machine (10) comprises a first conveyor belt (15) and a slotting knife (11), and a feeding control component of the slotting machine (10) comprises: A first driving device (16), comprising a first servo driving motor (162) and a first servo driver (161), wherein the first servo driver (161) is connected to a programmable controller (30), and the first driving device (16) drives the first conveyor belt (15) to move along a first direction (80); an object sensing sensor (12) connected to the first servo driver (161), the object sensing sensor (12) being arranged upstream of the grooving knife (11), the object sensing sensor (12) being arranged to output a trigger signal to the first servo driver (161) when material is detected; The first servo driver (161) receives the trigger signal and outputs the current actual position value of the first servo drive motor to the programmable controller (30); the programmable controller (30) receives the current actual position value and outputs the position correction value to the first servo driver (161).

2. The feeding control assembly of the slotting machine (10) according to claim 1, characterized in that: The first servo driver (161) is configured in an absolute position control mode, and the current actual position value and the position correction value are absolute position values.

3. The feeding control assembly of the slotting machine (10) according to claim 2, characterized in that: The upstream of the groove cutting machine (10) is a creasing machine (20), and the creasing machine (20) includes a second conveyor belt (25) and a second driving device (26) for driving the second conveyor belt (25), and the second driving device (26) includes a second servo drive motor (262) and a second servo driver (261), wherein the second servo driver (261) is connected to the programmable controller (30), and the programmable controller (30) is configured as follows: when the second servo drive motor (262) runs to a target position, the programmable controller (30) sends a position return zero instruction to the first servo driver (161), and the target position of the second servo drive motor (262) corresponds to the first end of the material being aligned with a reference position, and the reference position is located upstream of the second end of the creasing machine (20) and the distance ΔD1 from the second end of the creasing machine (20) is between 0 and 100 mm.

4. The feeding control assembly of the slotting machine (10) according to claim 3, characterized in that: The reference position is the second end of the creasing machine (20).

5. The feeding control assembly of the slotting machine (10) according to claim 4, characterized in that: The distance between the installation position of the object sensing sensor (12) and the grooving knife (11) is between 100 mm and 300 mm.

6. A feeding control assembly for a slotting machine (10) according to any one of claims 1 to 5, characterized in that: The object sensing sensor (12) is a photoelectric sensor.

7. A feeding control system for an indentation and grooving device, characterized in that: The creasing and grooving device comprises a creasing machine (20) and a grooving machine (10), wherein the grooving machine (10) is located downstream of the creasing machine (20), the grooving machine (10) comprises a first conveyor belt (15) and a grooving knife (11), the creasing machine (20) comprises a second conveyor belt (25), and the feeding control system comprises: A feeding control assembly for a slotting machine (10) as claimed in any one of claims 1 to 6, wherein a first servo driver (161) of the feeding control assembly for the slotting machine (10) is connected to a programmable controller (30); A feeding control component of the creasing machine (20), which is used to drive the second conveyor belt (25) to move along the first direction (80), and the feeding control component of the creasing machine (20) comprises a second servo drive motor (262) and a second servo driver (261), wherein the second servo driver (261) is connected to the programmable controller (30); The programmable controller (30) is configured such that when the second servo drive motor (262) runs to a target position, the programmable controller (30) sends a position return to zero instruction to the first servo drive (161) and the second servo drive (261) respectively, and the target position of the second servo drive motor (262) corresponds to the first end of the material being aligned with a reference position, and the reference position is located upstream of the second end of the creasing machine (20) and the distance ΔD1 from the second end of the creasing machine (20) is between 0 and 100 mm.

8. The feeding control system of the creasing and grooving device according to claim 7, characterized in that: The second servo driver (261) is configured in an absolute position control mode.

9. The feeding control system of the creasing and grooving device according to claim 8, characterized in that: There is a gap between the first end of the first conveyor belt (15) and the second end of the second conveyor belt (25).

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