Multi-column package material automatic deviation correcting device

Abstract

The application provides a kind of multi-column package material automatic deviation rectifying device, including at least one deviation rectifying system, the front and rear sides of deviation rectifying system are respectively provided with roller for the passage of strip package material, each deviation rectifying system is composed of two deviation rectifying mechanisms, the inside of each deviation rectifying mechanism is provided with a column of strip package material, one of the deviation rectifying mechanisms is installed on the first slider slidingly arranged, the other deviation rectifying mechanism is installed on the second slider slidingly arranged, the first slider and the second slider can slide along the transverse direction of strip package material under the drive of external force, and the sliding actions of the two are independent of each other, the deviation rectifying mechanism includes two sets of oppositely arranged deviation rectifying modules and at least one sensor connected to PLC system, the application adjusts each column of strip package material independently, can realize online automatic accurate control of the transverse walking position of single-column, double-column and even multi-column package material, i.e. automatic deviation rectifying control, has great practical value.

Description

Technical Field

[0001] This invention belongs to the technical field of packaging machine auxiliary equipment, specifically relating to an automatic correction device for multi-row packaging materials. Background Technology

[0002] Packaging machines that use composite films or filter paper as packaging materials mostly employ roll-shaped packaging materials. After unwinding and tension control, the materials are fed into the packaging machine for various packaging processes. As the requirements for packaging machine speed and packaging quality become increasingly stringent, precise automatic control is needed in the lateral position of the strip packaging materials during feeding.

[0003] Known correction methods and devices fall into two main categories, similar to those described in CN208378024U "An Automatic Correction Device for Aluminum Foil Paper in a ZB47 Packaging Machine" and CN211619497U "An Automatic Correction System for a Multi-Row Packaging Machine." The former uses a motor or other drive mechanism to move the packaging material conveyor rollers, controlling and adjusting the tilt angle of the conveyor rollers based on the output film position detection signal to change the lateral position of the packaging material during conveying. The latter directly drives the axial position of the packaging material unwinding shaft based on the material feeding position detection signal, generating lateral displacement and thus changing the lateral position of the output material during feeding. Both of these correction methods and devices indirectly adjust the lateral position of the strip packaging material, resulting in low adjustment accuracy and long adjustment time, making them unsuitable for high-speed packaging machines. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an automatic correction device for multi-row packaging materials with high adjustment accuracy, short adjustment time and applicability to high-speed packaging machines.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: an automatic correction device for multi-row packaging materials, including at least one correction system. Rollers for passing through the strip packaging materials are respectively provided on the front and rear sides of the correction system. Each correction system consists of two correction mechanisms. Each correction mechanism has a row of strip packaging materials passing through it. One correction mechanism is installed on a first slider that is slidably arranged, and the other correction mechanism is installed on a second slider that is slidably arranged. Both the first slider and the second slider can slide laterally along the strip packaging materials under the drive of the adjustment mechanism, and their sliding actions are independent of each other. The correction mechanism includes two sets of oppositely arranged correction modules and at least one sensor connected to the PLC system.

[0006] Two sets of correction modules are distributed on the left and right sides of the strip packaging material. Each set of correction modules includes a lower roller mechanism distributed vertically and an upper roller mechanism that can move vertically. The strip packaging material passes between the two, and the outer diameter tangent of the rollers mounted on the upper and lower roller mechanisms forms an angle α with the walking direction of the strip packaging material. When one set of upper roller mechanisms presses down on the strip packaging material in the walking state, the strip packaging material generates a lateral displacement in the direction of the outer diameter tangent of the roller. The sensor is set at the edge of the strip packaging material to detect the actual offset of the strip packaging material and feed it back to the PLC system. The PLC system alternately controls the two sets of upper roller mechanisms to press down on the strip packaging material to realize automatic adjustment of the actual offset of the strip packaging material.

[0007] Furthermore, the upper roller mechanism and the lower roller mechanism are jointly mounted on the mounting frame, and the mounting frames of the two sets of correction modules are arranged opposite each other. The upper roller mechanism is connected to the cylinder, the control end of the cylinder is connected to the PLC system, and the piston rod of the cylinder passes through the mounting frame.

[0008] Furthermore, positioning blocks are installed on the top of both the first and second sliders, and a positioning groove matching the positioning block is opened on one side of the bottom of the mounting bracket. The positioning block and the mounting bracket are detachably connected by screws.

[0009] Furthermore, positioning pins are provided between the positioning block and the first and second sliders, as well as between the mounting bracket and the first and second sliders.

[0010] Furthermore, the two correction mechanisms in the same correction system are arranged side by side, and the two sets of correction modules in the same correction mechanism are symmetrically arranged on the left and right sides of the strip packaging material.

[0011] Furthermore, the adjustment mechanism includes multiple guide rods, a screw, a connecting plate, a first nut, and a second nut. The interiors of the first and second sliders are provided with multiple guide holes along their length. The first and second sliders are respectively provided with the first and second nuts on the outside of one of the guide holes. The first and second nuts and their corresponding guide holes are all provided with a screw. The screw and the second nut are provided with a thread that engages with each other. Guide rods are slidably provided in the remaining guide holes. One end of the guide rod is connected by the connecting plate, and the other end is connected by the support mechanism. The front end of the screw is fitted with a guide sleeve that engages with the thread of the first nut.

[0012] Furthermore, the ends of the guide sleeve and the screw are respectively provided with a first knob and a second knob. By rotating the first knob and the second knob, the first slider and the second slider can be controlled to slide along multiple guide rods respectively.

[0013] Furthermore, the support mechanism is a mounting plate arranged parallel to the connecting plate. An adjustment groove is provided on the mounting plate. The roller located on the rear side of the correction system is installed in the adjustment groove by bolts, and the position between the roller and the mounting plate is adjustable.

[0014] Furthermore, the first slider has a notch in the middle and a guide block connected to the connecting plate is provided at the notch. A positioning ring is provided inside the guide block. The free end of the screw passes through the positioning ring and the two are fixedly connected by screws. The positioning ring and the guide block are rotatably connected.

[0015] Furthermore, both the bottom of the first and second sliders are threaded with locking bolts, and the ends of the locking bolts pass through the first and second sliders and abut against the guide rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the present invention can independently adjust each row of strip packaging material, and can realize online automatic and precise control of the lateral feeding position of single row, double row or even multiple rows of packaging material, that is, automatic correction control of packaging material, which has great practical value. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of an automatic alignment device for multi-row packaging materials;

[0018] Figure 2 This is a schematic diagram showing the positional relationship between two sets of rollers, sensors, and strip packaging material;

[0019] Figure 3 yes Figure 1 Side view;

[0020] Figure 4 yes Figure 1 A sectional view;

[0021] Figure 5 This is a schematic diagram showing the positional relationship between the screw, guide rod, and roller;

[0022] Figure 6 This is a schematic diagram showing the connection relationship between the two correction mechanisms and the first and second sliders;

[0023] Figure 7 yes Figure 6 Side view;

[0024] Figure 8 yes Figure 7 A sectional view along the DD direction;

[0025] Figure 9 yes Figure 1 A cross-sectional view from another angle;

[0026] Figure 10This is a schematic diagram showing the connection between the locking bolt, the first and second sliders, and the guide rod;

[0027] Figure 11 This is a schematic diagram showing the distribution of two sets of rollers on both sides of the strip packaging material. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] The principle of this invention is as follows: In actual production, packaging materials are mostly provided in rolls. After being unwound and fed into a packaging machine, they undergo various packaging processes to achieve material packaging. In most cases, it is necessary to control the lateral and longitudinal positions of the strip packaging materials to achieve precise shaping of the packaging materials in subsequent packaging processes. For example, ensuring that the edges are flush after folding or that the position of the printed patterns on the outer packaging is accurate, complete, and consistent, thereby guaranteeing packaging quality and reducing the scrap rate. Therefore, precise control of the lateral position of the packaging materials during input is required. The multi-column automatic packaging material correction device of this invention adjusts each column of strip packaging materials independently, thus enabling online automatic and precise control of the lateral feeding position of single, double, and even multi-column packaging materials, i.e., automatic packaging material correction control, which has great practical value.

[0030] The present invention discloses an automatic web-aligning device for multi-row packaging materials, comprising at least one web-aligning system A, an adjusting mechanism D, and a supporting mechanism E, such as... Figure 1 and Figure 3 As shown, rollers II and I are respectively provided on the front and rear sides of the correction system A for the strip packaging material 3 to pass through. Each correction system A consists of two correction mechanisms B. Each correction mechanism B has a row of strip packaging material 3 passing through its interior. The correction mechanism B includes two sets of oppositely arranged correction modules C and at least one sensor 6 connected to the PLC system.

[0031] like Figure 2 and Figure 11As shown, 3 represents a strip of packaging material, 1,1a and 2,2a are two sets of rollers arranged vertically on both sides of the packaging material, and 6 is a through-beam photoelectric sensor. Neither set of rollers 1,1a nor 2,2a has a driving force and can rotate freely around its axis. The two lower rollers 1a and 2a are arranged tangentially to the packaging material, while the two upper rollers 1 and 2 can move vertically under the action of cylinder 38, thus clamping or disengaging the strip of packaging material from the lower rollers. When the upper rollers move downwards to clamp the strip of packaging material with the lower rollers, the two rollers rotate freely under the frictional force during packaging material transport. Because the axial direction of the two pairs of rollers has a small angle α with the packaging material transport direction, the transport direction of the packaging material is affected by the rollers, resulting in a lateral offset. The magnitude and speed of the offset are related to the angle α, the required error range, and the transport speed of the strip of packaging material. During operation, sensor 6 detects the edge position of the packaging material, determines the actual lateral offset, and outputs an analog signal. This signal is processed by the PLC system, which controls the upper and lower rollers to clamp or disengage. The conveyed strip packaging material passes through two pairs of rollers, 1,1a and 2,2a. When the upper and lower rollers clamp, a lateral displacement is generated in that direction, thus correcting the lateral position of the packaging material. The process continues until sensor 6 detects a deviation of 0 or the opposite deviation value, at which point the roller on that side disengages and the roller on the other side clamps. Therefore, the lateral position of the packaging material is always controlled within a very small error range.

[0032] Figure 4 This is a cross-sectional view of a multi-row automatic packaging material correction device. The mounting plate 24 is a support mechanism E for mounting the correction system A and the adjustment mechanism D. It is arranged parallel to the connecting plate 18. The first guide sleeve 7 is a non-metallic component that, together with the shaft 8, forms rollers I and II. The first guide sleeve 7 reduces the frictional resistance when the packaging material passes through. It is fixedly mounted on the shaft 8 by washers 9 and bolts 10. The shaft 8 is fixedly mounted on the mounting plate 26 by bolts 23. The shaft 8 on the packaging material input side can be adjusted on the mounting plate 26 to change the path of the packaging material input. The adjustment mechanism D includes multiple guide rods, screws, a connecting plate, a first nut, and a second nut. This embodiment uses two guide rods as an example for explanation. Figure 5 and Figure 6As shown, one end of each of the two guide rods 11 is fixedly mounted on the mounting plate 24, and the other end is fixedly connected to the end face of the shaft 8 via the connecting plate 18. The second slider 22 and the first slider 19 are respectively mounted on the two guide rods 11. One end of the screw 20 is fixedly connected to the second knob 15, and the other end is inserted into the threaded hole of the second nut 21. The middle part passes through the hole of the guide block 30 fixed on the connecting plate 18. The positioning ring 48 is fixed to the screw 20 with screws 31, so that the screw 20 can only rotate and cannot move axially. In order to reduce the gap, a wave washer 50 is also provided between the positioning ring 48 and the guide block 30. The second nut 21 is fixed to the end face of the second slider 22 with screws 34. By rotating the second knob 15, the screw 20 is driven to rotate, which drives the second nut 21 to drive the second slider 22 to move along the axial direction of the two guide rods 11. The second guide sleeve 16 is inserted into the hole of the connecting plate 18 and coaxially mounted with the screw 20. The first knob 14 is fixed to the second guide sleeve 16 with a screw 13. The other end of the second guide sleeve 16 passes through the first nut 12 via a threaded connection. The first nut 12 is fixed to the first slider 19 with a screw 28. By rotating the first knob 14, the second guide sleeve 16 is driven, which in turn drives the first nut 12 to move the first slider 19 along the axial direction of the two guide rods 11. Therefore, the second knob 15 and the first knob 14 can respectively adjust the lateral position of the second slider 22 and the first slider 19 relative to the packaging material conveying direction.

[0033] Furthermore, such as Figure 6 As shown, sensor 6 is fixed to the first slider 19 by bending plate 29, first nut 12 is fixed to the end face of the first slider 19 by screw 28, and second nut 21 is fixed to the end face of the second slider 22 by screw 34.

[0034] like Figure 7 and Figure 8 As shown, the upper roller mechanism includes rollers 1 and 2, roller supports 43 and 47, and a cylinder 38. Roller 1 is mounted on roller support 43 via bearing 45 and screw 44, and roller 1 can rotate freely around its axis. Roller support 43 is mounted on guide post 41. Guide post 41 is fixedly connected to mounting bracket 37. Cylinder 38 is fixed in a hole at the top of mounting bracket 37. The piston rod 39 of cylinder 38 is connected to roller support 43. One end of tension spring 42 is fixed to mounting bracket 37 via spring hanger 40, and the other end is fixed to roller support 43 via spring hanger 40. Therefore, when the PLC controls the solenoid valve to turn on the air source, single-acting cylinder 38 drives roller support 43 to move roller 1 downward along guide post 41. When the air source is cut off, tension spring 42 drives roller 1 and roller support 43 to move upward together to reset. Roller 2 is mounted on roller support 47 via bearing and screw, and roller 2 can rotate freely around its axis. The roller support 47 is fixed to the mounting bracket 37 with screws 32.

[0035] A locating pin 51 is installed at the bottom of the mounting bracket 37, which is fixed to the slider 19 by screws 52 and locating pin 51. The holes for the screws 52 on the mounting bracket 37 have a large gap. Loosening the screws 52 allows the entire mounting bracket to rotate a small angle around the locating pin 51. A locating block 54 is installed on the bottom side of the mounting bracket 37 by screws 53, and the groove on the locating block 54 mates with the locating pin 4 installed on the slider 19. When installing the mounting bracket 37 on the slider 19, first ensure that the locating pins 51 and 4 are engaged, and finally tighten the screws 52. Changing the position of the groove on the locating block 54 under different working conditions can change the tilt angle of the mounting bracket 37 and rollers 1, 1a relative to the slider. Figure 2 Angle α in the equation.

[0036] like Figure 9 and Figure 10 As shown, both the first and second sliders are threaded with locking bolts 56 at their bottoms. The ends of the locking bolts pass through the first and second sliders and abut against the guide rod 11. The ends of the locking bolts 56 are respectively equipped with a third knob 35 and a fourth knob 33. This invention uses the first knob 14 and the second knob 15 to fine-tune the first and second sliders, changing the two rows of packaging materials being conveyed to their respective desired center positions. Finally, the third knob 35 and the fourth knob 33 are used to lock them, maintaining reliability during operation. Furthermore, multiple correction mechanisms allow for independent adjustment of each row of strip packaging materials, enabling online automatic and precise control of the lateral movement position of single, double, and even multi-row packaging materials—that is, automatic packaging material correction control—which has significant practical value.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic alignment device for multi-row packaging materials, characterized in that, It includes at least one correction system, with rollers for the strip packaging material to pass through on the front and rear sides of the correction system. Each correction system consists of two correction mechanisms, and a row of strip packaging material passes through the interior of each correction mechanism. One correction mechanism is mounted on a first slider that is slidably set, and the other correction mechanism is mounted on a second slider that is slidably set. Both the first slider and the second slider can slide laterally along the strip packaging material under the drive of the adjustment mechanism, and their sliding actions are independent of each other. The correction mechanism includes two sets of correction modules arranged opposite to each other and at least one sensor connected to the PLC system. The adjustment mechanism includes multiple guide rods, a screw, a connecting plate, a first nut, and a second nut. Multiple guide holes are correspondingly formed inside the first and second sliders along their length. A first nut and a second nut are respectively installed on the outside of one of the guide holes of the first and second sliders. A screw is inserted through the first nut, the second nut, and their corresponding guide holes. A threaded connection is provided between the screw and the second nut. Guide rods are slidably installed in the remaining guide holes. One end of each guide rod is connected to the connecting plate, and the other end is connected to the support mechanism. A guide sleeve with a threaded engagement with the first nut is fitted on the outer side of the front end of the screw. A first knob and a second knob are respectively provided at the ends of the guide sleeve and the screw. Rotating the first knob and the second knob respectively controls the sliding of the first and second sliders along the multiple guide rods. Two sets of correction modules are distributed on the left and right sides of the strip packaging material. Each set of correction modules includes a lower roller mechanism distributed vertically and an upper roller mechanism that can move vertically. The strip packaging material passes between the two, and the outer diameter tangent of the rollers mounted on the upper and lower roller mechanisms forms an angle α with the walking direction of the strip packaging material. When one set of upper roller mechanisms presses down on the strip packaging material in the walking state, the strip packaging material generates a lateral displacement in the direction of the outer diameter tangent of the roller. The sensor is set at the edge of the strip packaging material to detect the actual offset of the strip packaging material and feed it back to the PLC system. The PLC system alternately controls the two sets of upper roller mechanisms to press down on the strip packaging material to realize automatic adjustment of the actual offset of the strip packaging material.

2. The automatic correction device for multi-row packaging materials according to claim 1, characterized in that, The upper roller mechanism and the lower roller mechanism are jointly mounted on the mounting frame, and the mounting frames of the two sets of correction modules are arranged opposite each other. The upper roller mechanism is connected to the cylinder, the control end of the cylinder is connected to the PLC system, and the piston rod of the cylinder passes through the mounting frame.

3. The automatic correction device for multi-row packaging materials according to claim 2, characterized in that, The top of both the first and second sliders is equipped with positioning blocks, and a positioning groove matching the positioning blocks is opened on one side of the bottom of the mounting bracket. The positioning blocks and the mounting bracket are detachably connected by screws.

4. The automatic correction device for multi-row packaging materials according to claim 3, characterized in that, Positioning pins are provided between the positioning block and the first slider and the second slider, as well as between the mounting bracket and the first slider and the second slider.

5. The automatic correction device for multi-row packaging materials according to claim 1, characterized in that, Two correction mechanisms in the same correction system are set up side by side, and two sets of correction modules in the same correction mechanism are symmetrically set on the left and right sides of the strip packaging material.

6. The automatic correction device for multi-row packaging materials according to claim 1, characterized in that, The support mechanism is a mounting plate arranged parallel to the connecting plate. An adjustment groove is provided on the mounting plate. The roller located behind the correction system is installed in the adjustment groove by bolts, and the position between the roller and the mounting plate is adjustable.

7. The automatic correction device for multi-row packaging materials according to claim 6, characterized in that, The first slider has a notch in the middle and a guide block connected to the connecting plate is provided at the notch. A positioning ring is provided inside the guide block. The free end of the screw passes through the positioning ring and the two are fixedly connected by screws. The positioning ring and the guide block are rotatably connected.

8. The automatic correction device for multi-row packaging materials according to claim 7, characterized in that, Both the first and second sliders have locking bolts threaded to their bottoms. The ends of the locking bolts pass through the first and second sliders and abut against the guide rod.

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