Packaging carton production line

Abstract

The invention relates to the technical field of carton production and conveying, in particular to a packaging carton production line. According to the scheme, the roller for conveying the carton comprises an outer rotating cylinder, a plurality of telescopic strips are evenly distributed in the circumferential direction of the outer rotating cylinder, and the telescopic strips are annularly arranged and can stretch out of or retract into an inner cavity of the outer rotating cylinder; the two ends of the outer rotating cylinder are rotatably arranged on the inner shaft in a sleeving manner; a permanent magnet is arranged at the inner end of the telescopic strip, an electromagnetic coil is arranged at the upper end of the outer side of the inner shaft corresponding to the telescopic strip, and the electromagnetic coil is used for being matched with the permanent magnet of the telescopic strip in an aligned mode to drive the telescopic strip to stretch out or retract into the outer rotating cylinder. In the carton conveying process, when a carton reaches a machining station, the carton can be limited by driving the telescopic strips located on the two sides of the carton to stretch out, and the stability of the carton is improved.

Description

Technical Field

[0001] The invention relates to the technical field of carton production and transportation, and in particular to a packaging carton production line. Background Art

[0002] In the past, ordinary roller conveyor belts were mostly used in the transportation of cartons. This type of traditional roller conveyor belt is usually composed of rollers with smooth surfaces and simple structures, which expose many disadvantages in the process of conveying cartons. On the one hand, the friction between the roller and the carton is relatively small. Under high-speed transportation conditions, the carton is prone to slip and deflect on the roller due to inertia, making it difficult to accurately move to each processing station along the established route. This greatly increases the risk of quality problems for subsequent processing procedures such as printing and slotting that require high precision in the position of the carton. Situations such as misalignment of printed patterns and deviation of slotting positions are common.

[0003] On the other hand, due to the lack of effective means of positioning cartons, when cartons arrive at a specific processing station, they cannot quickly and stably remain stationary for processing operations, and often require additional manual intervention or the use of simple mechanical fixtures to assist in positioning. This not only consumes manpower and slows down the pace of production, but also easily introduces human errors due to the instability of operation, further affecting product quality. Moreover, simple mechanical fixtures mostly use rigid contact methods, frequently collide and rub with cartons, and are very likely to scratch the surface of the cartons, destroying the integrity of the appearance of the cartons, greatly reducing the beauty of the product packaging, and it is difficult to meet the current market demand for high-quality packaging.

[0004] To sum up, there is an urgent need for a packaging carton production line that can achieve efficient and stable transportation of cartons and precise positioning during the processing, while protecting the surface of the carton and adapting to the requirements of different production processes, so as to overcome the various defects of the existing technology and improve the production efficiency and quality of packaging cartons. Summary of the invention

[0005] In order to achieve the above-mentioned object, the present application discloses a packaging carton production line, which comprises: a conveyor line, wherein the conveyor line comprises a plurality of rollers for conveying cartons; A processing station is arranged at the conveying line; The roller comprises: An outer drum, having a plurality of telescopic strips uniformly distributed in the circumference thereof, the plurality of telescopic strips being arranged in a ring shape and being able to extend or retract into the inner cavity of the outer drum; An inner shaft, on which both ends of the outer drum are rotatably sleeved; A permanent magnet is arranged at the inner end of the telescopic strip, and an electromagnetic coil is arranged at the outer upper end of the inner shaft corresponding to the telescopic strip. The electromagnetic coil is used to align with the permanent magnet of the telescopic strip to drive the telescopic strip to extend or retract into the outer rotating cylinder.

[0006] In a specific solution, a plurality of electromagnetic coils are evenly distributed on the outer side of the inner shaft. The plurality of electromagnetic coils are arranged in a ring shape and are used to align with the telescopic strips on the outer rotating drum.

[0007] An elastic band is connected between two adjacent telescopic strips, and both ends of the elastic band extend to the ends of the telescopic strip respectively, and the outer side surface of the end of the elastic band is flush with the outer side surface of the telescopic strip.

[0008] The cross section of the elastic band is in a wave-shaped structure, thereby forming a plurality of raised portions and recessed portions on the surface of the elastic band, and the outer side of the raised portion is in a strip shape, which is arranged perpendicular to the telescopic strip.

[0009] In addition, a fan blade is arranged at one end of the outer drum, the inner shaft passes through the center of the fan blade, and an air outlet is arranged at the other end of the outer drum. During operation, the outer drum rotates around the inner shaft under the action of the driving mechanism.

[0010] Both sides of the outer end of the telescopic strip are respectively provided with guiding inclined surfaces which are gradually inclined and extend from top to bottom.

[0011] The conveying line is provided with positioning frames on both sides along the conveying direction thereof, respectively, and rollers are rotatably mounted on the positioning frames, and a conveying space allowing cartons to pass through is formed between the rollers of the two positioning frames.

[0012] A plurality of rollers arranged at intervals are installed on the positioning frame along the conveying direction of the conveying line.

[0013] In a possible embodiment, the packaging carton production line also includes a first conveyor line and a second conveyor line that are connected to each other, and the first conveyor line and the second conveyor line are both composed of a plurality of rollers to form a conveying structure, and the extension height of the telescopic strip of the roller of the first conveyor line at the connection point is greater than the extension height of the telescopic strip of the roller on the second conveyor line.

[0014] The roller used to convey cartons in the solution of the present application includes an outer rotating drum, which is evenly distributed with a plurality of telescopic strips in the circumference thereof, and the plurality of telescopic strips are arranged in a ring shape and can be extended or retracted into the inner cavity of the outer rotating drum; the two ends of the outer rotating drum are rotatably sleeved on the inner shaft; the inner end of the telescopic strip is provided with a permanent magnet, and the outer upper end of the inner shaft is provided with an electromagnetic coil corresponding to the telescopic strip, and the electromagnetic coil is used to align with the permanent magnet of the telescopic strip to drive the telescopic strip to extend or retract into the outer rotating drum. In the process of conveying cartons, when the cartons arrive at the processing station, the telescopic strips located on both sides of the cartons are driven to extend, so as to limit the position of the cartons and improve their stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a packaging carton production line in an embodiment of the present application; Figure 2 This is a schematic diagram of the overall structure of the roller in the embodiment of the present application; Figure 3 This is a partial structural schematic diagram of a roller in an embodiment of the present application; Figure 4 This is a schematic diagram of the internal structure of the roller in the embodiment of the present application; Figure 5 This is a schematic diagram of the position of the permanent magnet in the embodiment of the present application; Figure 6 This is a schematic diagram of the roller limiting the position of the carton in the embodiment of the present application; Figure 7 This is a schematic diagram of the positions of the roller and the positioning frame in the embodiment of the present application; Figure 8 It is a cross-sectional view of the elastic band in the embodiment of the present application. DETAILED DESCRIPTION

[0016] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The principles and features of the present invention are described below in conjunction with the drawings. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0017] The terms "including" and other expressions with similar meanings in the specification or claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions, such as a process, method or system, or device comprising a series of steps or units is not limited to the listed steps or units.

[0018] Example 1: Figure 1-7 As shown, a packaging carton production line comprises: a conveyor line 100, wherein the conveyor line 100 comprises a plurality of rollers 300 for conveying cartons; The processing station 200 is arranged at the conveyor line 100; according to different processing requirements in the carton production process, such as printing, slotting, labeling and other processes, the processing station 200 is reasonably arranged along the conveyor line 100.

[0019] like Figure 2-5 As shown, the roller 300 includes: The outer drum 1 has a plurality of telescopic strips 2 evenly distributed in the circumference thereof. The plurality of telescopic strips 2 are arranged in a ring shape and can be extended or retracted into the inner cavity of the outer drum 1. The telescopic strips 2 are embedded in the wall of the outer drum 1 through slots, and the slot size matches the shape of the telescopic strips 2. In addition, the outer surface of the telescopic strips 2 can be wrapped with a layer of soft material such as rubber or polyurethane, which can increase the friction between the telescopic strips 2 and the carton to prevent the carton from sliding during processing and avoid scratching the carton surface.

[0020] An inner shaft 3, on which both ends of the outer drum 1 are rotatably sleeved; The inner end of the telescopic strip 2 is provided with a permanent magnet 4, and the outer upper end of the inner shaft 3 is provided with an electromagnetic coil 5 corresponding to the telescopic strip 2. The electromagnetic coil 5 is used to align with the permanent magnet 4 of the telescopic strip 2 to drive the telescopic strip 2 to extend or retract into the outer drum 1. During the process of conveying cartons, when the cartons arrive at the processing station 200, the telescopic strips 2 located on both sides of the cartons are driven to extend to limit the position of the cartons, so as to improve their stability.

[0021] In a specific solution, a permanent magnet 4 is fixedly installed at the inner end of the telescopic strip 2. The permanent magnet 4 can be made of a neodymium iron boron material with a high magnetic energy product to ensure that a sufficiently strong magnetic field can be generated to interact with the electromagnetic coil 5. The electromagnetic coil 5 is tightly wound around the outer upper end of the inner shaft 3 corresponding to the position of the telescopic strip 2. In the control system of the conveyor line 100, a module for controlling the current of the electromagnetic coil 5 is integrated, such as Figure 6 As shown, when the carton arrives at the processing station 200, the position sensor (such as a photoelectric sensor) installed on the conveyor line 100 detects the position signal of the carton, and transmits the signal to the control system, and the control system then passes the corresponding current to the electromagnetic coils 5 located on both sides of the carton according to the preset program. When the positive current is passed, the magnetic field generated by the electromagnetic coil 5 and the permanent magnet 4 attract each other, driving the telescopic strip 2 to extend out of the outer drum 1 until it reaches a preset extension length, which can be adjusted according to the height, weight and processing requirements of the carton; when the processing is completed and the carton needs to continue to be conveyed, the control system passes the reverse current to the electromagnetic coil 5, so that the magnetic field generated by the electromagnetic coil 5 and the permanent magnet 4 repel each other, and the telescopic strip 2 retracts to the inner cavity of the outer drum 1, so that the carton can pass through the processing station 200 smoothly and enter the next process.

[0022] When the carton arrives at the first processing station 200, the position sensor promptly detects the arrival of the carton and feeds back the signal to the control system. The control system quickly controls the electromagnetic coil 5 corresponding to the station to drive the telescopic strip 2 to extend, accurately limit the position of the carton, and make it stay firmly in the processing position. At this time, the equipment of the processing station 200 is started, such as the printing head of the printing press descends, the tool of the slotting machine cuts in, etc., and the carton is processed according to the predetermined process parameters. During the processing, the control system monitors the operating status of the processing equipment and the position stability of the carton in real time. In a possible embodiment, a plurality of electromagnetic coils 5 are evenly distributed on the outer side of the inner shaft 3, and the plurality of electromagnetic coils 5 are arranged in a ring shape and are used to align with the telescopic strips 2 on the outer drum 1. The extension of the plurality of telescopic strips 2 can be controlled synchronously, which serves a purpose similar to adjusting the diameter of the roller 300; in the carton processing station 200, such as printing, slotting and other operations, different processing techniques may have specific requirements for the height and position of the carton. Adjusting the diameter of the roller 300 can make the carton in a more ideal height and posture during processing. During the carton conveying process, if the diameter of the roller 300 needs to be adjusted, the telescopic strips 2 are extended synchronously by passing a precisely controlled current into the corresponding electromagnetic coils 5. Since the plurality of telescopic strips 2 are evenly distributed on the outer drum 1, their synchronous extension or retraction can effectively change the effective outer diameter of the outer drum 1, similar to the stepless adjustment of the diameter of the roller 300.

[0023] In a possible implementation, a PLC control system is used to monitor the extension status of the telescopic strip 2 in real time, and the feedback sensor built into the electromagnetic coil 5 (such as a Hall sensor, which is used to detect changes in magnetic field strength to indirectly reflect the position of the telescopic strip 2) or the displacement sensor installed on the outer drum 1 is used to ensure that the telescopic strip 2 reaches a predetermined extension length, thereby achieving precise adjustment of the diameter of the roller 300 to adapt to the transportation and processing requirements of different cartons.

[0024] The outer ends of the telescopic strip 2 are provided with guide slopes 11 extending gradually from top to bottom. When the carton arrives at the processing station 200 and the telescopic strip 2 is extended to limit the carton, since there may be deviation in the initial placement position, when the telescopic strip 2 is extended, the side of the carton can slide downward along the guide slope 11 to play a guiding role.

[0025] Example 2: Figure 3-5 As shown, an elastic band 6 is connected between two adjacent telescopic strips 2 , and both ends of the elastic band 6 extend to the ends of the telescopic strip 2 , respectively. The outer side surfaces of the ends of the elastic band 6 are flush with the outer side surfaces of the telescopic strip 2 .

[0026] The elastic band 6 is preferably made of rubber or polyurethane. When making a specific connection, a feasible method is to pre-open a dovetail groove or a T-shaped groove on the telescopic strip 2, process the two ends of the elastic band 6 into a matching shape, and then embed them into the groove, and then fix them with strong glue or vulcanization process to ensure that the elastic band 6 will not loosen during long-term use. Another way is to use rivets or bolts to fix the two ends of the elastic band 6 on the telescopic strip 2, but this method needs to be careful not to expose the rivet or bolt head to avoid scratching the carton. This problem can be solved by covering the connection part with a thin rubber pad.

[0027] When the carton arrives at the processing station 200 and the telescopic strip 2 extends to limit the carton, the elastic band 6 further enhances the stability of the carton. On the one hand, the elastic band 6 can make up for the slight difference in the extension length of the telescopic strip 2, so that the side of the carton can be supported more evenly; on the other hand, when external force is applied to the carton during processing, such as the vibration of the printing equipment and the cutting of the slotting tool, the elastic band 6 can absorb part of the impact force, prevent the carton from displacement or deformation due to uneven force, and ensure processing accuracy.

[0028] like Figure 8 As shown, the cross section of the elastic band 6 is a wave-shaped structure, thereby forming a plurality of raised portions 7 and recessed portions 8 on the surface of the elastic band 6 , and the outer side of the raised portion 7 is in a strip shape, which is arranged perpendicular to the telescopic strip 2 .

[0029] When the carton contacts the elastic band 6, the raised portion 7 on the bottom of the carton can be pressed by it, which can increase the friction between the two. The raised portion 7 on the side of the carton can prevent the carton from being displaced in this direction due to factors such as vibration of processing equipment and external force impact.

[0030] Example 3: Figure 2-3 As shown, a fan blade 9 is provided at one end of the outer drum 1, and the inner shaft 3 passes through the central part of the fan blade 9. An air outlet 10 is provided at the other end of the outer drum 1. During operation, the outer drum 1 rotates around the inner shaft 3 under the action of the driving mechanism.

[0031] In a specific solution, the fan blades 9 are connected to one end of the outer drum 1 through a hub structure in the center. The hub is designed as a sleeve with internal threads, and its inner diameter is adapted to the outer diameter of the inner shaft 3 to ensure that the outer drum 1 can rotate smoothly around the inner shaft 3. The shape of the air outlet 10 can be circular, rectangular or elliptical, and is selected according to the layout of the peripheral equipment of the production line and the required ventilation direction. The driving mechanism that drives the outer drum 1 to rotate around the inner shaft 3 can adopt various forms, and the common ones are motor drive, belt drive and gear drive.

[0032] When the driving mechanism (such as a motor) is working, the outer drum 1 rotates around the inner shaft 3 under the action of the driving force. As the outer drum 1 rotates, the fan blades 9 suck in air and push it toward the air outlet 10. The air flow takes away the heat generated by the electromagnetic coil 5 on the inner shaft 3 to achieve heat dissipation. The heat generated by the electromagnetic coil 5 on the inner shaft 3 can be quickly dissipated, reducing the coil temperature and improving the working efficiency and stability of the electromagnetic coil.

[0033] Example 4: Figure 7 As shown, the conveyor line 100 is provided with positioning frames 12 on both sides along the conveying direction thereof, and rollers 300 are rotatably mounted on the positioning frames 12, and a conveying space allowing cartons to pass through is formed between the rollers 300 of the two positioning frames 12. After the conveyor line 100 is started, if a carton is placed on the conveyor line 100, the items are conveyed between the rollers 300 as the conveyor line 100 moves. The rollers 300 rotate to assist the conveyor line 100 in pushing the items forward while keeping the items stable during the conveying process. The rollers 300 on the positioning frames 12 ensure that the items do not deviate from the predetermined path during the conveying process, and keep the items moving in a straight line.

[0034] In addition, a plurality of rollers 300 are installed on the positioning frame 12 along the conveying direction of the conveyor line 100. When positioning the carton, the diameter of the rollers 300 can be adjusted in sequence along the length direction of the positioning frame 12, so that the outer sides of the rollers 300 of the two positioning frames 12 are connected to form a V-shaped structure; the V-shaped structure formed by the rollers 300 can guide the carton to move along the center line of the conveyor line 100, and maintain the directionality of the carton during the conveying process. Reduce the deviation and torsion of the carton during the conveying process, and ensure that the carton passes through the conveyor line 100 smoothly. In addition, by adjusting the diameter of the rollers 300, the opening size of the V-shaped structure can be changed to accommodate cartons of different widths.

[0035] Example 5: Figure 1 As shown, in a possible embodiment, the packaging carton production line also includes a first conveyor line 13 and a second conveyor line 14 that are connected to each other, and the first conveyor line 13 and the second conveyor line 14 are both composed of a plurality of rollers 300 to form a conveying structure, and at the connection point, the extension height of the telescopic strip 2 of the roller 300 on the first conveyor line 13 is greater than the extension height of the telescopic strip 2 of the roller 300 on the second conveyor line 14.

[0036] The extension height of the roller 300 telescopic strip 2 of the first conveyor line 13 is greater than that of the second conveyor line 14, forming a slope transition, which helps the cartons to be smoothly transferred from the high conveyor line to the low conveyor line.

[0037] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A packaging carton production line, characterized in that: include: A conveyor line, the conveyor line comprising a plurality of rollers for conveying cartons; A processing station is arranged at the conveying line; The roller comprises: An outer rotating drum (1) has a plurality of telescopic strips (2) evenly distributed in the circumferential direction thereof, wherein the plurality of telescopic strips (2) are arranged in a ring shape and are capable of extending or retracting into the inner cavity of the outer rotating drum (1); An inner shaft (3), with both ends of the outer drum (1) being rotatably sleeved on the inner shaft (3); A permanent magnet (4) is disposed at the inner end of the telescopic strip (2), and an electromagnetic coil (5) is disposed at the outer upper end of the inner shaft (3) corresponding to the telescopic strip (2). The electromagnetic coil (5) is used to align with the permanent magnet (4) of the telescopic strip (2) to drive the telescopic strip (2) to extend or retract into the outer rotating drum (1).

2. The packaging carton production line according to claim 1, characterized in that: A plurality of electromagnetic coils (5) are evenly distributed on the outer side of the inner shaft (3), and the plurality of electromagnetic coils (5) are arranged in a ring shape and are used to align with the telescopic strips (2) on the outer rotating drum (1).

3. The packaging carton production line according to claim 1 or 2, characterized in that: An elastic band (6) is connected between two adjacent telescopic strips (2), with both ends of the elastic band (6) extending to the ends of the telescopic strip (2) respectively, and the outer side surface of the end of the elastic band (6) being flush with the outer side surface of the telescopic strip (2).

4. The packaging carton production line according to claim 3 is characterized by: The cross-section of the elastic band (6) is in a wave-shaped structure, thereby forming a plurality of raised portions (7) and recessed portions (8) on the surface of the elastic band (6), and the outer side of the raised portion (7) is in a strip shape, which is arranged perpendicular to the telescopic strip (2).

5. The packaging carton production line according to claim 1 is characterized in that: One end of the outer rotating drum (1) is provided with a fan blade (9), the inner shaft (3) passes through the central portion of the fan blade (9), and the other end of the outer rotating drum (1) is provided with an air outlet (10). During operation, the outer rotating drum (1) rotates around the inner shaft (3) under the action of the driving mechanism.

6. The packaging carton production line according to claim 1, characterized in that: Both sides of the outer end of the telescopic strip (2) are respectively provided with guiding inclined surfaces (11) which extend gradually from top to bottom.

7. The packaging carton production line according to claim 1, characterized in that: Positioning frames (12) are respectively arranged on both sides of the conveying line along its conveying direction, and rollers are rotatably mounted on the positioning frames (12), and a conveying space allowing cartons to pass through is formed between the rollers of the two positioning frames (12).

8. The packaging carton production line according to claim 7, characterized in that: A plurality of rollers arranged at intervals are mounted on the positioning frame (12) along the conveying direction of the conveying line.

9. The packaging carton production line according to claim 1, characterized in that: It also comprises a first conveyor line (13) and a second conveyor line (14) which are butted against each other, wherein the first conveyor line (13) and the second conveyor line (14) are both formed of a plurality of rollers to form a conveying structure, and at the butt joint, the extension height of the telescopic strips (2) of the rollers of the first conveyor line (13) is greater than the extension height of the telescopic strips (2) of the rollers of the second conveyor line (14).

Images