Roll paper centering device and stacking conveying line

Abstract

The utility model provides a roll paper centering device and a stacking conveying line. The roll paper centering device comprises an installation base plate, a power source, a transmission mechanism and two clamping arms. The mounting substrate is provided with mounting screw holes and corresponding mounting screws; the transmission mechanism comprises two movable blocks which can translate in opposite directions and are driven by a power source; each clamping arm comprises a connecting part and a clamping part, each clamping part is provided with an elastic cushion layer, an arc-shaped clamping face is formed on the surface of each elastic cushion layer, each clamping arm is connected with one transmission piece through the corresponding connecting part, and the clamping faces of the two clamping arms are oppositely arranged. When the roll paper stacking device is applied to a stacking conveying line of an automatic packaging line, the positions of roll paper on the stacking conveying line can be adjusted through the clamping arms, so that the centers of the front roll paper and the rear roll paper are aligned, the roll paper can be linearly arranged after reaching the tail end of the conveying line, the problem of roll paper dislocation in the prior art is solved, and the stacking process is smoother.

Description

Technical Field

[0001] The utility model relates to the technical field of roll material conveying, in particular to a roll paper centering device. Background Art

[0002] Existing automatic packaging lines are generally equipped with a stacking mechanism, which includes a conveyor line, a pushing device, a clamping device and a stacking platform. The conveyor line transports the paper rolls to the position of the pushing device and arranges them into groups. The pushing device pushes a group of paper rolls to the position of the clamping device each time, and the clamping device clamps the group of paper rolls and stacks them.

[0003] Taking an existing paper roll stacking process as an example, several continuously rotating rollers are provided at the bottom of the conveyor line to move the paper roll toward the end of the conveyor line. A baffle is provided at the end of the conveyor line. The first paper roll to reach the baffle will be blocked in place by the baffle, and the subsequent paper rolls will be blocked by the previous paper roll, so that the paper rolls are arranged in a straight line. When a predetermined number of paper rolls are arranged into a group, the pushing device transfers the group of paper rolls from a direction perpendicular to the conveyor line to the corresponding station of the clamping device, thereby realizing automatic stacking.

[0004] The above-mentioned stacking device has a good working effect when applied to square objects such as cartons. The cartons can be smoothly arranged into a group and pushed under the clamping device. However, there are occasional problems when applied to paper rolls. Sometimes the paper rolls cannot be smoothly arranged in a straight line. Some paper rolls will move to the side of the predetermined straight line position, resulting in the paper rolls not being smoothly clamped and stacked after being pushed to the clamping device. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a paper roll centering device, which, after being installed on the conveyor line of the automatic stacking mechanism, can solve the problem of occasional unsmooth stacking of paper rolls in the prior art and ensure smooth processing of the automatic packaging line.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A paper roll centering device includes a mounting base, a power source, a transmission mechanism and two clamping arms; the mounting base is provided with mounting screw holes and corresponding mounting screws; the transmission mechanism includes two movable blocks driven by the power source and capable of translation toward each other; the clamping arms include a connecting portion and a clamping portion, the clamping portion is provided with an elastic pad layer, and a circular arc-shaped clamping surface is formed on the surface of the elastic pad layer, each clamping arm is connected to a transmission member through the connecting portion, and the clamping surfaces of the two clamping arms are arranged opposite to each other.

[0008] In order to solve the problem of unsmooth stacking of paper rolls, the inventors found while observing the stacking process that after some paper rolls reach the end of the conveyor line and touch the previous paper roll, they will continue to be driven by the continuously rotating roller, causing them to slide along the circumferential edge of the previous paper roll and gradually move to the side of the predetermined straight line position. After further analysis, the inventors found that this situation occurs because the positions of the front and rear paper rolls on the conveyor line are not completely aligned. As a result, after the rear paper roll touches the front paper roll, the rear paper roll is simultaneously subjected to the friction force of the roller and the pressure of the front paper roll. The vector directions of the two forces are misaligned, which generates a lateral force on the rear paper roll, thereby causing the rear paper roll to move to the side along the edge of the previous paper roll. This problem will not occur between paper rolls that are completely aligned or have a small position deviation. In addition, since the contact surface between the square-structured cartons is a large plane, even if there is a certain position deviation, as long as the center of action of the friction force of the roller is still within the contact surface range, the problem of lateral movement will not occur. Therefore, the above-mentioned problem generally does not occur in the palletizing process of cartons. In order to solve this problem, it is necessary to ensure that the position of the paper roll on the conveyor line is aligned to eliminate the lateral force, or reduce it to a low value where the paper roll cannot be moved. Therefore, the inventors designed a paper roll centering device. After the device is installed on the conveyor line, it can adjust the position of the paper roll on the conveyor line so that the front and rear paper rolls are aligned to prevent the paper roll from moving sideways after reaching the position of the pushing device. Some existing technologies ensure that the conveyed objects are in an aligned state by setting limit plates on both sides of the conveyor line. However, if the limit plates are set too tightly, they are likely to rub against the objects, which can easily cause damage to the paper materials. If they are set too wide, they cannot achieve a good alignment effect. In addition, the setting of the limit plates causes the conveyor line to only be able to transport objects of a certain specification, while the automatic packaging line sometimes needs to process multiple objects. The setting of the limit plates limits the scope of application of the stacking mechanism of the automatic packaging line. The utility model can be installed at the corresponding position of a conventional conveyor line by installing screws. By adjusting the clamping movement range of the clamping arms, it can be suitable for rolls of paper of different specifications. When processing objects such as cartons that do not require clamping and centering, the distance between the two clamping arms can be adjusted to the maximum value to allow the objects to pass through, which is suitable for different production needs.

[0009] Furthermore, the transmission mechanism further includes a first guide rail, and the movable block is slidably connected to the first guide rail.

[0010] Furthermore, the transmission mechanism also includes two lever arm assemblies, the power source includes a driving end head that can rotate around an axis and is perpendicular to the mounting base plate, the lever arm assembly includes a first lever arm and a second lever arm, the first end of the first lever arm is movably hinged to the first end of the second lever arm, the second end of the first lever arm is movably hinged to the movable block, the second end of the second lever arm is fixedly connected to the driving end head, and the extension direction of the first lever arm and the second lever arm is perpendicular to the axial direction of the driving end head; the setting positions of the two lever arm assemblies are symmetrical relative to the center of the driving end head.

[0011] Furthermore, the second lever arms of the two lever arm assemblies are integrally connected.

[0012] Furthermore, the transmission mechanism includes two first guide rails arranged in parallel, and the movable block is slidably connected to the two first guide rails.

[0013] Furthermore, the movable block is provided with a hinged base movably hinged to the first lever arm, and the hinged base and the driving end head are both arranged at a middle position between the two first guide rails.

[0014] Furthermore, the connecting portion includes a first connecting portion fixedly connected to the movable block, a second connecting portion connected to the first connecting portion and extending perpendicular to the mounting substrate, and a third connecting portion connected to the second connecting portion and extending parallel to the mounting substrate. The third connecting portions of the two connecting portions extend in a direction approaching each other, and the clamping portion is fixedly connected to the end of the third connecting portion.

[0015] Furthermore, the first connection portion and the third connection portion are respectively located on two sides of the mounting substrate.

[0016] Furthermore, the second connecting portion is provided with a length adjustment mechanism.

[0017] Another object of the present invention is to provide a palletizing conveyor line, which includes a conveying device and the above-mentioned paper roll centering device, the conveying device includes a plurality of conveying rollers, and the clamping surfaces of the two clamping parts of the paper roll centering device are located above the conveying rollers and are arranged near the axial ends of the conveying rollers.

[0018] In summary, the application of the present invention can achieve the following beneficial effects:

[0019] 1. When the utility model is applied to the palletizing conveyor line of the automatic packaging line, the position of the paper roll on the palletizing conveyor line can be adjusted by the clamping arm so that the centers of the front and rear paper rolls are aligned. After the paper rolls reach the end of the conveyor line, they can be arranged in a straight line, solving the problem of paper roll misalignment in the prior art and making the palletizing process smoother.

[0020] 2. The clamping part of the utility model is provided with an elastic cushion layer, and the surface of the elastic cushion layer forms an arc-shaped clamping surface, which can minimize the damage to the surface of the paper roll during the clamping process.

[0021] 3. In some embodiments of the present invention, the same driving end is used to drive the two arm assemblies to move simultaneously, thereby keeping the movement of the two clamping arms consistent, thereby ensuring the accuracy of alignment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the three-dimensional structure of the paper roll centering device in the embodiment;

[0023] Figure 2 for Figure 1 Front view of

[0024] Figure 3 for Figure 1 Rear view;

[0025] Figure 4 A schematic structural diagram of a paper roll centering device in another embodiment;

[0026] Figure 5 This is a structural diagram of the palletizing conveyor line in the embodiment;

[0027] In the figure, 1-mounting base plate, 11-mounting screw, 2-power source, 21-driving end, 3-transmission mechanism, 31-movable block, 311-hinge base, 32-first guide rail, 33-arm assembly, 331-first arm, 332-second arm, 4-clamping arm, 41-connecting part, 411-first connecting part, 412-second connecting part, 4121-first set rod, 4122-second set rod, 4123-locking member, 413-third connecting part, 42-clamping part, 421-elastic cushion, 422-clamping surface, 5-conveyor platform, 511-roller, 6-mounting frame. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0029] Reference Figures 1-3 The utility model provides a paper roll centering device, which includes a mounting base 1, a power source 2, a transmission mechanism 3 and two clamping arms 4, wherein the power source 2 is connected to the mounting base 1, the transmission mechanism 3 includes two movable blocks 31 driven by the power source and capable of linear translation toward each other, the clamping arm includes a connecting portion 41 and a clamping portion 42, the two ends of the connecting portion are respectively connected to the movable block and the clamping portion, the clamping portion is provided with an elastic pad layer 421, the surface of the elastic pad layer is formed with a clamping surface 422 with an arc structure, the two clamping arms are symmetrically arranged and the two clamping surfaces are opposite, the direction of the clamping surface is consistent with the translation direction of the movable block after being driven by the power source, so that the paper roll between the two clamping arms can be clamped and positioned by the clamping surfaces on both sides.

[0030] In a more specific embodiment:

[0031] The mounting base plate 1 is provided with a plurality of mounting screws 11 and mounting screw holes corresponding to the mounting screws. The mounting base plate can be fixed to other supporting structures through the mounting screws and mounting screw holes to realize the installation of the paper roll centering device;

[0032] The power source 2 has a driving end 21 that can rotate around an axis, and the axis of the driving end is perpendicular to the mounting base;

[0033] The transmission mechanism 3 includes two movable blocks 31, two first guide rails 32 and two force arm assemblies 33, the first guide rails are fixedly connected to the mounting base 1, the two first guide rails are arranged parallel to each other, the movable block is slidably connected to the two first guide rails, the two movable blocks are respectively arranged at positions close to the two ends of the first guide rails, the movable block is provided with a hinge base 311, the force arm assembly includes a first force arm 331 and a second force arm 332, the first end of the first force arm is movably hinged to the first end of the second force arm, the second end of the first force arm is movably hinged to the hinge base 311 of the movable block, the second end of the second force arm is connected to the driving end head, and the two force arm assemblies are symmetrically arranged relative to the center of the driving end head, with reference to Figure 3 When the driving end rotates clockwise, the angle between the first force arm and the second force arm increases, and the movable block slides in the direction away from the driving end. When the driving end rotates clockwise, the angle between the first force arm and the second force arm decreases, and the movable block slides in the direction close to the driving end. Since the two force arm assemblies are arranged symmetrically, the two movable blocks will move synchronously towards or away from the driving end, so that the clamping arms connected to the movable blocks move synchronously, ensuring clamping accuracy and clamping stability. In order to further improve the synchronization of the two force arm assemblies, the second force arms of the two force arm assemblies can be set as an integrated connection structure;

[0034] The clamping arm 4 includes a connecting portion 41 and a clamping portion 42. The connecting portion includes a first connecting portion 411 fixedly connected to the movable block, a second connecting portion 412 connected to the first connecting portion and extending perpendicular to the mounting base plate, and a third connecting portion 413 connected to the second connecting portion and extending parallel to the mounting base plate. The first connecting portion and the second connecting portion are located on both sides of the mounting base plate. When the paper roll centering device is fixed to other supporting structures with the third connecting portion facing downward, the mounting base plate can provide supporting force to bear the weight of the clamping arm. If the first connecting portion and the third connecting portion are arranged on the same side of the mounting base plate, the clamping arm 4 includes a connecting portion 412 and a clamping portion 42. On the other hand, the weight of the clamping arm is entirely borne by the connection structure (usually a screw connection structure) between the third connection part and the mounting base plate. As the device is used, the connection structure may be deformed under the action of gravity, affecting the subsequent disassembly and maintenance of the device. The third connection parts of the two connection parts located on different clamping arms extend in a direction approaching each other, and the clamping part is fixedly connected to the end of the third connection part. The clamping part is provided with an elastic pad layer 421, and the surface of the elastic pad layer forms an arc-shaped clamping surface. The clamping surfaces of the two clamping parts are arranged opposite to each other. When the two movable blocks translate toward each other, the two clamping surfaces will approach or move away from each other.

[0035] Figure 4 A structural schematic diagram of a paper roll centering device in another embodiment is shown. In this embodiment, the second connecting portion 412 has a first set of rods 4121 and a second set of rods 4122 that are interconnected. The first set of rods and the second set of rods can be fixed to each other by a locking member 4123. The second connecting portion can change its own length through the relative sliding of the first set of rods and the second set of rods to adapt to different needs.

[0036] Figure 5 The structure diagram of a palletizing conveyor line is shown, which includes a conveying platform, a mounting frame and Figure 1 The paper roll centering device shown in the figure has a conveying platform including a plurality of rollers. The paper roll centering device is fixed above the conveying platform through a mounting frame, and the clamping surfaces of the two clamping arms are located at the axial ends of the rollers.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A paper roll centering device, characterized by: It includes a mounting base, a power source, a transmission mechanism and two clamping arms; the mounting base is provided with mounting screw holes and corresponding mounting screws; the transmission mechanism includes two movable blocks driven by the power source and capable of translation toward each other; the clamping arm includes a connecting portion and a clamping portion, the clamping portion is provided with an elastic pad layer, and a circular arc-shaped clamping surface is formed on the surface of the elastic pad layer, each clamping arm is connected to a transmission member through the connecting portion, and the clamping surfaces of the two clamping arms are arranged opposite to each other.

2. The paper roll centering device according to claim 1, characterized in that: The transmission mechanism further includes a first guide rail, and the movable block is slidably connected to the first guide rail.

3. The paper roll centering device according to claim 2, characterized in that: The transmission mechanism also includes two lever arm assemblies, the power source includes a driving end head that can rotate around an axis and is perpendicular to the mounting base plate, the lever arm assembly includes a first lever arm and a second lever arm, the first end of the first lever arm is movably hinged to the first end of the second lever arm, the second end of the first lever arm is movably hinged to the movable block, the second end of the second lever arm is fixedly connected to the driving end head, and the extension direction of the first lever arm and the second lever arm is perpendicular to the axial direction of the driving end head; the setting positions of the two lever arm assemblies are symmetrical relative to the center of the driving end head.

4. The paper roll centering device according to claim 3, characterized in that: The second lever arms of the two lever arm assemblies are integrally connected.

5. The paper roll centering device according to claim 2, characterized in that: The transmission mechanism comprises two first guide rails arranged in parallel, and the movable block is slidably connected to the two first guide rails.

6. The paper roll centering device according to claim 3, characterized in that: The movable block is provided with a hinged base movably hinged to the first lever arm, and the hinged base and the driving end head are both arranged at a middle position between the two first guide rails.

7. The paper roll centering device according to claim 1, characterized in that: The connecting portion includes a first connecting portion fixedly connected to the movable block, a second connecting portion connected to the first connecting portion and extending perpendicular to the mounting substrate, and a third connecting portion connected to the second connecting portion and extending parallel to the mounting substrate. The third connecting portions of the two connecting portions extend in a direction approaching each other, and the clamping portion is fixedly connected to the end of the third connecting portion.

8. The paper roll centering device according to claim 7, characterized in that: The first connecting portion and the third connecting portion are respectively located on two sides of the mounting substrate.

9. The paper roll centering device according to claim 7, characterized in that: The second connecting portion is provided with a length adjustment mechanism.

10. A palletizing conveyor line, characterized by: It includes a conveying platform, a mounting frame and the roll paper centering device described in any one of claims 1 to 9, the roll paper centering device is fixedly connected to the mounting frame through a mounting base, the conveying platform includes a plurality of rollers, and the clamping surfaces of the two clamping parts of the roll paper centering device are located above the conveying rollers and are arranged near the axial ends of the conveying rollers.

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