阅读说明：本技术 一种填料波纹片自动翻片叠片设备 (Automatic sheet turning and laminating equipment for packing corrugated sheets ) 是由 李荣祖 计亚平 杨文俊 于 2021-07-19 设计创作，主要内容包括：本发明公开了一种填料波纹片自动翻片叠片设备,包括上部开口的叠放框架、输送支架、设置在输送支架上具有两层输送线的输送线组、用于驱动输送线组转动的翻转机构,在叠放框架的开口两侧分别设有支撑滚轮组,支撑滚轮组与一张开机构相关联,叠片包括如下步骤：使奇数片的波纹片单元进入两层输送线之间向前移动；波纹片单元向前伸出并落到叠放框架上的支撑滚轮组,张开机构使两列支撑滚轮组向外移动波纹片单元即可落入叠放框架内；重复上述步骤,并且翻转机构动作使输送线组翻转180°,此时的波纹片单元即可翻转落入叠放框架内。本发明既可简化整体设备的结构,从而降低初期投资和生产成本,又可有效地提升生产效率,并确保品质的一致性。(The invention discloses automatic sheet turning and laminating equipment for a filler corrugated sheet, which comprises a stacking frame with an opening at the upper part, a conveying support, a conveying line group with two layers of conveying lines arranged on the conveying support, and a turnover mechanism for driving the conveying line group to rotate, wherein two sides of the opening of the stacking frame are respectively provided with a supporting roller group, the supporting roller groups are associated with a stretching mechanism, and the laminating comprises the following steps: enabling the corrugated sheet units of the odd sheets to enter between two layers of conveying lines to move forwards; the corrugated sheet units extend forwards and fall onto the supporting roller groups on the stacking frame, and the two rows of supporting roller groups move outwards by the opening mechanism to fall into the stacking frame; and repeating the steps, and enabling the conveying line group to turn over by 180 degrees through the action of the turning mechanism, wherein the corrugated sheet unit at the moment can turn over and fall into the stacking frame. The invention can simplify the structure of the whole equipment, thereby reducing the initial investment and the production cost, effectively improving the production efficiency and ensuring the consistency of the quality.)

1. An automatic sheet turning and stacking device for corrugated sheets of filler is suitable for positively and negatively stacking rectangular corrugated sheet units and comprises a corrugated sheet unit conveying device and a corrugated sheet unit stacking device and is characterized in that the corrugated sheet unit conveying device comprises a conveying support, a conveying line group which is arranged on the conveying support and provided with two layers of conveying lines which are arranged up and down, and a turnover mechanism used for driving the conveying line group to rotate around a central axis, a containing gap which is larger than the height of the corrugated sheet unit is arranged between the two layers of conveying lines, the corrugated sheet unit stacking device comprises a stacking frame with an upper opening, the front end of the stacking frame is an access end which is butted with the output end of the conveying line group, supporting roller groups are respectively arranged on two sides of the opening of the stacking frame, each supporting roller group comprises a plurality of rollers which are arranged at intervals along the conveying direction of the conveying line group, and a driving unit which drives the rollers to rotate, the supporting roller groups are associated with a one-opening mechanism, so that the two supporting roller groups can move outwards from the access position to the stacking position, and the stacking of the automatic corrugated filler sheet turning and stacking device comprises the following steps:

the corrugated sheet units of odd sheets enter the accommodating gap between the two layers of conveying lines, and at the moment, the conveying lines on the lower layer drive the corrugated sheet units to move forwards;

the corrugated sheet units of the odd sheets extend forwards from the containing gap and fall onto the supporting roller group at the access position on the stacking frame, the supporting roller group drives the corrugated sheet units of the odd sheets to move forwards continuously, the opening mechanism acts to enable the two rows of supporting roller groups to move outwards to the stacking position, and the corrugated sheet units of the odd sheets can fall into the stacking frame at the moment;

the corrugated sheet units of even sheets enter the accommodating gap between the two layers of conveying lines, and at the moment, the conveying lines on the lower layer drive the corrugated sheet units to move forwards;

the turnover mechanism acts to turn over the conveying line group by 180 degrees, when the corrugated sheet units of even sheets extend forwards from the containing gap and fall to the supporting roller group which is positioned at the access position on the stacking frame, the supporting roller group drives the corrugated sheet units of the even sheets to move forwards continuously, the opening mechanism acts to enable the two rows of supporting roller groups to move outwards to the stacking position, and the even corrugated sheet units at the moment can fall into the stacking frame so as to form positive and negative stacking with the corrugated sheet units of the odd sheets.

2. The apparatus according to claim 1, wherein the turnover mechanism comprises a driving ring and at least 1 supporting ring which are connected to the outside of the conveying line group at intervals, the supporting rings are rotatably connected with the conveying support, and the driving ring is connected with a power unit through a transmission mechanism.

3. The automatic corrugated filler sheet turning and laminating device as claimed in claim 1, wherein the front and rear support rings are arranged outside the conveyor line group, the driving ring is a gear ring, the power unit is a stepping motor, and the stepping motor is associated with the driving ring through a gear transmission mechanism.

4. The apparatus according to claim 3, wherein a baffle is provided on one side of the conveyor line assembly to shield the side of the receiving space.

5. The automatic filler corrugated sheet turning and stacking device as claimed in claim 1, wherein the opening mechanism comprises two opposite slide rails capable of moving left and right, and driving elements associated with the slide rails, and the supporting roller sets are arranged on the corresponding slide rails.

6. The automatic sheet turning and stacking equipment for the filled corrugated sheets as claimed in claim 4, wherein a plurality of gathering barrier strips are vertically connected to the slide rail, the gathering barrier strips are arranged between corresponding rollers, and when two rows of supporting roller groups are in the stacking position, the distance between the rollers opposite to each other on the left side and the right side is greater than the width of the corrugated sheet unit; when the driving element drives the slide rail to move relatively and the two rows of supporting roller groups are positioned at the access position, the opposite gathering barrier strips clamp the width of the corrugated sheet unit, and the distance between the opposite rollers at the left side and the right side is smaller than the width of the corrugated sheet unit.

7. The apparatus of claim 5 wherein the stacking frame includes a support base, and the bellows unit stacking device further includes a lift mechanism associated with the support base, the lift mechanism providing the same height to the uppermost bellows unit stacked on the support base.

8. The automatic turning and stacking device for corrugated packing sheets as claimed in claim 5, wherein the supporting roller set comprises a double-headed motor and a supporting base movably disposed on the stacking frame, a plurality of rotating rods connected to the sliding rails, the rollers are sleeved on the rotating rods, a sprocket is disposed at one end of each of the rollers, a synchronizing rod rotatably connected to the supporting base is coaxially connected to one end of an output shaft of the double-headed motor, a driving sprocket is disposed at the other end of the output shaft of the double-headed motor, a chain is wound on the driving sprocket, the chain sequentially bypasses the sprockets on each roller, the rotating rods and the synchronizing rod have the same variable pitch spiral groove, pins are disposed on the supporting base and the rollers, when the output shaft of the double-headed motor rotates in the forward direction, each roller is driven to rotate by the driving sprocket, the chain and the sprocket, and at the same time, the synchronizing screw drives the double-headed motor to move from a low speed to a high speed to the outside, the roller synchronously moves to the outer side on the rotating screw from low speed to high speed to a stacking position; the output shaft of the double-end motor rotates reversely, the synchronizing rod drives the double-end motor to move inwards from high speed to low speed, and the roller wheel moves inwards from high speed to low speed to the access position on the rotating rod synchronously.

9. The automatic sheet turning and stacking device for the filled corrugated sheets as claimed in claim 6, wherein the opening mechanism comprises rotating shafts located on two sides of the bottom of the stacking frame and a driving shaft transversely arranged between the two rotating shafts, a plurality of vertical folding bars are arranged on the rotating shafts at intervals, worms are arranged on two ends of the driving shaft respectively, worm gears meshed with the worms are arranged on the rotating shafts, the rotating directions of the worms on two ends of the driving shaft are opposite, the driving shaft is associated with a stepping motor, and when the stepping motor drives the driving shaft to rotate, the rotating shafts on two ends of the driving shaft rotate in opposite directions, so that the vertical folding bars incline outwards.

Technical Field

The invention relates to the technical field of manufacturing of packing corrugated sheets, in particular to automatic sheet turning and stacking equipment for packing corrugated sheets.

Background

At present, in the industrial fields of air separation, chemical industry, petrochemical industry, environmental protection and the like, when people carry out rectification, absorption, desorption, extraction, heat exchange and washing, the packing formed by regularly arranging and stacking low-rigidity rectangular corrugated sheet units in a positive and negative alternate mode is often used. As shown in fig. 1, the corrugated sheet unit 1 has a plurality of ribs having a semicircular cross section, and adjacent ribs are protruded upward and downward to be connected to each other, so that the cross section is substantially continuous sinusoidal. The distance between the lowest point and the highest point of adjacent curved ridges in the corrugated sheet unit constitutes the height of the corrugated sheet unit, and the corrugated sheet units in the packing 9 need to be alternately stacked in the front and back direction so as to form a gap between the adjacent corrugated sheet units.

Such fillers generally include the following manufacturing steps: the continuous corrugated sheet is firstly produced on a corrugated sheet production line, then the continuous corrugated sheet is cut into rectangular corrugated sheet units with set specifications by a cutting device, and then the corrugated sheet units are stacked together in a positive-negative mode to form the corrugated sheet packing.

However, the existing production method of the corrugated sheet filler has the following technical defects: people usually turn the corrugated sheet unit 180 degrees by hand or a mechanical arm to form positive and negative stacks, and it can be understood that when manual operation is adopted, although the advantages of accurate stacking position, less initial investment and the like are achieved, the efficiency is low, and the consistency of quality is difficult to achieve due to the limitation of personal skills, responsibility and the like of operators. For the full-automatic manipulator mode, full-automatic production can be realized, so that the production efficiency is high, but the corrugated sheet unit has the characteristics of light weight, easy bending deformation in the overturning process and the like, so that the quality consistency is poor. In particular, in order to ensure effective turnover, two manipulators are required to be used for automatic operation, so that the initial investment is high, the production cost is not reduced, and the large-area popularization and promotion are difficult.

Disclosure of Invention

The invention aims to provide automatic sheet turning and stacking equipment for packing corrugated sheets, which can simplify the structure of the whole equipment, reduce initial investment and production cost, effectively improve production efficiency and ensure quality consistency.

In order to achieve the purpose, the invention adopts the following technical scheme:

an automatic sheet turning and stacking device for corrugated sheets of filler, which is suitable for positively and negatively stacking rectangular corrugated sheet units and comprises a corrugated sheet unit conveying device and a corrugated sheet unit stacking device, wherein the corrugated sheet unit conveying device comprises a conveying support, a conveying line group which is arranged on the conveying support and provided with two layers of conveying lines which are arranged up and down, and a turnover mechanism used for driving the conveying line group to rotate around a central axis, a containing gap which is larger than the height of the corrugated sheet unit is arranged between the two layers of conveying lines, the corrugated sheet unit stacking device comprises a stacking frame with an upper opening, the front end of the stacking frame is an access end which is butted with the output end of the conveying line group, two sides of the opening of the stacking frame are respectively provided with a supporting roller group, the supporting roller groups comprise a plurality of rollers which are arranged at intervals along the conveying direction of the conveying line group, and the supporting roller groups are associated with a stretching mechanism, so that two rows of supporting roller groups can move outwards from the access position to the stacking position, and the stacking of the automatic filler corrugated sheet turning and stacking device comprises the following steps:

a. the corrugated sheet units of odd sheets enter the accommodating gap between the two layers of conveying lines, and at the moment, the conveying lines on the lower layer drive the corrugated sheet units to move forwards;

b. the corrugated sheet units of odd sheets extend forwards from the containing gap and fall onto the supporting roller groups at the access positions on the stacking frame, and the opening mechanism acts to enable the two rows of supporting roller groups to move outwards to the stacking position, so that the corrugated sheet units of odd sheets can fall into the stacking frame;

c. the corrugated sheet units of even sheets enter the accommodating gap between the two layers of conveying lines, and at the moment, the conveying lines on the lower layer drive the corrugated sheet units to move forwards;

d. the turnover mechanism acts to turn over the conveying line group by 180 degrees, when the corrugated sheet units of even sheets extend forwards from the containing gap and fall on the stacking frame to be positioned at the supporting roller group of the access position, the opening mechanism acts to enable the two rows of supporting roller groups to move outwards to the stacking position, and the even corrugated sheet units at the moment can fall into the stacking frame to form positive and negative stacking with the corrugated sheet units of odd sheets.

Because the conveying line group is provided with the two layers of conveying lines which are arranged up and down, the corrugated sheet unit can move forwards through the containing gap between the two layers of conveying lines, thereby avoiding the disordered displacement of the corrugated sheet unit and being beneficial to the accurate butt joint of the corrugated sheet unit sent out from the conveying line group and the subsequent corrugated sheet unit stacking device.

Unlike the prior art, the present invention includes a group of conveyor lines that can be turned 180 ° by a turnover mechanism, that is, the present invention turns a corrugated sheet unit 180 ° by rotating the group of conveyor lines, and thus, the rotation of the group of conveyor lines can be achieved by a simple turnover mechanism. Compared with manual overturning, the production efficiency can be remarkably improved; compare with the direct upset corrugated sheet unit of manipulator, be favorable to simplifying the structure to ensure the accuracy of corrugated sheet unit upset back position, and then realize that corrugated sheet unit is positive and negative accurate stacks.

In addition, the two sides of the opening of the stacking frame are respectively provided with the supporting roller groups extending along the conveying direction of the conveying line, so that the corrugated sheet units sent out from the conveying line groups can be lapped on the supporting roller groups at the connecting positions at the two sides of the stacking frame, and can continuously move forwards on the supporting roller groups under the driving of the conveying line groups until the corrugated sheet units completely fall into the opening range of the stacking frame, at the moment, the supporting roller groups at the two sides of the stacking frame are moved outwards to the stacking position by the expanding mechanism, and the corrugated sheet units can automatically fall into the stacking frame. It is understood that the spacing between the supporting roller sets in the accessing position is smaller than the width of the corrugated sheet unit, and the spacing between the supporting roller sets in the stacking position is larger than the width of the corrugated sheet unit.

Preferably, the turnover mechanism comprises a driving ring and at least 1 supporting ring which are connected at intervals outside the conveying line group, the supporting rings are rotatably connected with the conveying bracket, and the driving ring is associated with a power unit through a transmission mechanism.

The turnover mechanism comprises a driving ring and at least 1 supporting ring, wherein the supporting ring is rotatably connected with the conveying bracket, and the driving ring is connected with a power unit through a transmission mechanism. That is to say, the drive ring simultaneously serves as a support, which, together with the support ring, brings about a rotatable connection of the group of conveyor lines to the conveyor stand. Therefore, the power unit can conveniently drive the driving circular ring to rotate through the transmission mechanism, and then drive the conveying line group to rotate.

Preferably, the front and rear support rings are arranged outside the conveying line group, the driving ring is a gear ring, the power unit is a stepping motor, and the stepping motor is associated with the driving ring through a gear transmission mechanism.

The front and the rear supporting rings can form stable support for the conveying line group, and at the moment, the driving rings only need to bear the driving action, so that the stress of the driving rings and the torque which needs to be transmitted from the power unit to the driving rings through the transmission mechanism are favorably reduced.

Preferably, a baffle for shielding the side face of the accommodating gap is arranged on one side of the conveying line group, so that one side of the accommodating gap of the conveying line group is closed, when the conveying line group is turned to 90 degrees, the corrugated sheet unit in the accommodating gap can be prevented from falling downwards, and at the moment, the baffle has the function of positioning the side edge of the corrugated sheet unit, so that the subsequent corrugated sheet unit and the corrugated sheet unit stacking device can be accurately butted.

Preferably, the opening mechanism comprises two sliding rails which are oppositely arranged and can move left and right, and a driving element which is associated with the sliding rails, and the supporting roller groups are arranged on the corresponding sliding rails.

When driving elements such as air cylinders and oil cylinders drive the two slide rails to move outwards relatively, the gap between the two groups of supporting roller groups can be increased, and at the moment, the corrugated sheet units supported on the two groups of supporting roller groups can automatically fall down to form positive and negative stacked packing.

Preferably, the slide rail is vertically connected with a plurality of gathering barrier strips, the gathering barrier strips are arranged between corresponding rollers, and when two rows of supporting roller groups are positioned at the stacking position, the distance between the rollers opposite to each other at the left side and the right side is larger than the width of the corrugated sheet unit; when the driving element drives the slide rail to move relatively and the two rows of supporting roller groups are positioned at the access position, the opposite gathering barrier strips clamp the width of the corrugated sheet unit, and the distance between the opposite rollers at the left side and the right side is smaller than the width of the corrugated sheet unit.

When the driving element drives the two slide rails and the supporting roller set to move outwards to the stacking position and the corrugated sheet unit automatically falls, the driving element drives the slide rails and the supporting roller set to move inwards to the access position, the folding barrier strips can clamp the side edges of the corrugated sheet unit in the width direction at the moment, so that the corrugated sheet unit is stacked neatly, the distance between the rollers opposite to the left side and the right side is smaller than the width of the corrugated sheet unit, and the next corrugated sheet unit is conveniently overlapped and supported on the supporting roller set.

Preferably, the stacking frame includes a support base plate, and the corrugated sheet unit stacking apparatus further includes an elevating mechanism associated with the support base plate, the elevating mechanism causing the uppermost corrugated sheet unit stacked on the support base plate to have the same height.

It will be appreciated that the height of the stacking frame should be greater than the height of the entire packing material, so that the free fall height of the first corrugated sheet unit upon stacking into the stacking frame is much higher than the free fall height of the last corrugated sheet unit, and thus the corrugated sheet units in the previous stage are prone to shifting or even "flipping" during free fall.

The invention creatively arranges the supporting bottom plate associated with the lifting mechanism at the bottom of the stacking frame, thus the height of the supporting bottom plate can be correspondingly adjusted according to the serial number of the stacked corrugated sheet units, and then the uppermost corrugated sheet unit stacked on the supporting bottom plate is ensured to have the same proper height all the time, thereby effectively avoiding the problems of dislocation and even 'overturn' of the corrugated sheet unit when the corrugated sheet unit falls freely. That is, it is possible to make the uppermost corrugated sheet unit stacked on the support base have a small interval from the corrugated sheet units supported on the support roller set so that the corrugated sheet units of the support roller set are smoothly stacked on the corrugated sheet units of the support base.

Preferably, the supporting roller group comprises a double-end motor and a supporting seat which are movably arranged on the stacking frame, and a plurality of rotating rods connected to the sliding rail, the roller is sleeved on the rotating rods, one end of the roller is provided with a chain wheel, one end of an output shaft of the double-end motor is coaxially connected with a synchronizing rod rotationally connected with the supporting seat, the other end of the output shaft of the double-end motor is provided with a driving chain wheel, a chain is wound on the driving chain wheel, the chain sequentially bypasses the chain wheels on the rollers, the rotating rod and the synchronizing rod are provided with the same variable-pitch spiral grooves, the supporting seat and the rollers are provided with pins positioned in the spiral grooves, when the output shaft of the double-end motor rotates in the positive direction, the driving chain wheel, the chain and the chain wheel drive the rollers to rotate, meanwhile, the synchronous screw drives the double-head motor to move outwards from low speed to high speed, and the roller synchronously moves outwards on the rotating screw from low speed to high speed to a stacking position; the output shaft of the double-end motor rotates reversely, the synchronizing rod drives the double-end motor to move inwards from high speed to low speed, and the roller wheel moves inwards from high speed to low speed to the access position on the rotating rod synchronously.

In the scheme, the double-end motor and the supporting seat are arranged on the stacking frame, when the corrugated sheet unit is lapped on the supporting roller set, an output shaft of the double-end motor rotates in the positive direction, so that each roller is driven to rotate through the chain transmission mechanism, at the moment, the supporting seat and a pin on the roller are positioned at one end with a smaller pitch in the variable pitch spiral groove, therefore, the double-end motor and the roller synchronously move outwards at a low speed, and the supporting roller set drives the corrugated sheet unit to move forwards to a set position; the pin on bearing and the gyro wheel gets into the great one end of pitch spiral groove medium pitch this moment, and double-end motor moves to the outside with the gyro wheel is synchronous at a high speed to make the automatic whereabouts of ripple piece unit: then the double-head motor and the roller move outwards at a low speed synchronously, and the supporting roller group drives the corrugated sheet unit to move forwards to a set position; at the moment, the pin on the supporting seat and the roller enters the end with larger pitch in the variable pitch spiral groove, and the double-head motor and the roller synchronously move outwards at high speed, so that the corrugated sheet unit automatically falls down; then the output shaft of the double-end motor rotates reversely, so that the rollers are driven to idle reversely through the chain transmission mechanism, the synchronous rod drives the double-end motor to move inwards from high speed to low speed, and the rollers synchronously move inwards on the rotating rod from high speed to low speed to the connecting position, so that the subsequent corrugated sheet unit is lapped on the supporting roller set.

That is, the double-head motor of the invention can drive the roller to rotate and can also transversely move synchronously with the roller all the time, thereby playing the role of an opening mechanism.

Preferably, the opening mechanism comprises rotating shafts located on two sides of the bottom of the stacked frame and driving shafts transversely arranged between the two rotating shafts, a plurality of vertical closing barrier strips are arranged on the rotating shafts at intervals, worms are arranged at two ends of the driving shafts respectively, worm gears meshed with the worms are arranged on the rotating shafts, the rotating directions of the worms at two ends of the driving shafts are opposite, the driving shafts are associated with a stepping motor, and when the stepping motor drives the driving shafts to rotate, the rotating shafts at two ends of the driving shafts rotate in opposite directions, so that the vertical closing barrier strips lean out.

In the scheme, when the stepping motor drives the rotating shafts at two ends to rotate in the positive direction through the driving shaft, the gathering barrier strips can be synchronously inclined outwards to form a V shape, and the corrugated sheet units can conveniently fall freely from the larger openings at the upper ends of the gathering barrier strips; when the stepping motor drives the rotating shafts at the two ends to rotate reversely through the driving shaft, the gathering barrier strips can synchronously rotate inwards to be vertical, and accordingly the corrugated sheet units are clamped and gathered neatly. It can be understood that, because the gathering bar is driven by a stepping motor and a driving shaft to rotate, the action consistency can be ensured.

Therefore, the invention has the following beneficial effects: the structure of the whole equipment can be simplified, so that the initial investment and the production cost are reduced, the production efficiency can be effectively improved, and the consistency of the quality is ensured.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is a schematic view of a structure of the corrugated sheet unit.

Fig. 3 is a schematic view of a structure of the supporting roller set.

Fig. 4 is a schematic view of one construction of the deployment mechanism.

In the figure: 1. the device comprises a corrugated sheet unit 11, convex strips 2, a conveying bracket 3, a conveying line group 31, a conveying line 4, a stacking frame 5, a supporting roller group 51, a roller 52, a double-head motor 53, a supporting seat 54, a rotating rod 55, a chain wheel 56, a synchronous rod 57, a driving chain wheel 58, a chain 6, a driving ring 7, a supporting ring 8, a sliding rail 81, a gathering baffle bar 9, a rotating shaft 90, a worm wheel 91, a driving shaft 911 and a worm.

Detailed Description

The invention is further described with reference to the following detailed description and accompanying drawings.

As shown in fig. 1, an automatic corrugated sheet turning and stacking device for filler corrugated sheets is suitable for positive and negative stacking of rectangular corrugated sheet units, and specifically comprises a corrugated sheet unit conveying device and a corrugated sheet unit stacking device, wherein the corrugated sheet unit conveying device comprises a conveying support 2, a conveying line group 3 arranged on the conveying support, and a turnover mechanism for driving the conveying line group to rotate around a central axis, the conveying line group is provided with two layers of conveying lines 31 arranged up and down, and a containing gap larger than the height of the corrugated sheet unit is formed between the two layers of conveying lines, so that the corrugated sheet unit can enter the containing gap between the two layers of conveying lines and can be conveyed forwards.

In addition, the corrugated sheet unit stacking device comprises a rectangular stacking frame 4 with an opening at the upper part, the front end of the stacking frame is an access end which is in butt joint with the output end of the conveying line group, the left side and the right side of the opening of the stacking frame are respectively provided with a supporting roller group 5, and the supporting roller group comprises a plurality of rollers 51 which are arranged at intervals along the conveying direction of the conveying line group, and a driving unit which drives the rollers to rotate. That is, the supporting roller set is self-powered, thereby driving the corrugated sheet unit to move forward. In addition, the supporting roller group is associated with an opening mechanism, so that two rows of supporting roller groups can move outwards from the access position to the stacking position, and the stacking of the automatic filler corrugated sheet turning and stacking device comprises the following steps:

a. enabling the corrugated sheet unit of the first sheet to enter an accommodating gap between two layers of conveying lines, and driving the corrugated sheet unit to move forwards by the conveying line of the lower layer;

b. the corrugated sheet unit of the first sheet extends forwards from the containing gap and falls on the supporting roller group at the access position on the stacking frame, at the moment, the opening mechanism acts to enable the two rows of supporting roller groups to move outwards to the stacking position, and at the moment, the corrugated sheet unit of the first sheet can freely fall into the stacking frame. That is, the distance between two rows of supporting roller groups at the connecting position is smaller than the width of the corrugated sheet unit, and the distance between two rows of supporting roller groups at the stacking position is larger than the width of the corrugated sheet unit;

c. the corrugated sheet unit of the second sheet enters the accommodating gap between the two layers of conveying lines, and at the moment, the conveying line of the lower layer drives the corrugated sheet unit of the second sheet to move forwards;

d. the turnover mechanism acts to turn over the conveying line group by 180 degrees, at the moment, the second corrugated sheet unit turns over by 180 degrees, when the corrugated sheet unit of the second sheet extends forwards from the accommodating gap and falls on the supporting roller group at the access position on the stacking frame, the opening mechanism acts to move the two rows of supporting roller groups outwards to the stacking position, and at the moment, the second corrugated sheet unit can fall into the stacking frame so as to form positive and negative stacking with the corrugated sheet unit of the first sheet;

e. and (d) repeating the steps a to d to form corrugated sheet units stacked in the forward and reverse directions on the stacking frame so as to form the required filler.

It should be noted that, in the present embodiment, the corrugated sheet unit is moved in the length direction to minimize the width of the conveying line group; in addition, one end of the stacking frame in the longitudinal direction near the set of carrier lines is referred to as a front end, the other end is referred to as a rear end, and both sides in the width direction are referred to as left and right sides. In addition, the conveying lines on the conveying line group are self-powered, the supporting roller group is unpowered, and the corrugated sheet unit can move forwards on the supporting roller group only by means of the driving force of the conveying line group.

In addition, corresponding position sensors, corresponding counters and the like can be arranged on the conveying line group and the stacking frame so as to ensure the interval overturning of the conveying line group and the coordination of the actions among the components. Since the technical features and the operation principle of the above-mentioned sensor and the like are the prior art, and the production equipment of the corrugated sheet unit is also the prior art, the detailed description is not provided in this embodiment.

In order to avoid overlapping the corrugated sheet units stacked in front and back, as shown in fig. 2, the convex strips 11 on the corrugated sheet units 1 may be arranged obliquely, specifically, the convex strips form an angle of 45 ° with the length direction of the corrugated sheet units. Thus, when the two corrugated sheet units are overlapped, the convex strips are crossed with each other to form an included angle of 90 degrees.

Different from the prior art, the invention turns the corrugated sheet unit by 180 degrees by rotating the conveying line group, so that the rotation of the conveying line group can be realized by a simple turning mechanism. Compared with manual overturning, the production efficiency can be remarkably improved; compare with the direct upset corrugated sheet unit of manipulator, be favorable to simplifying the structure to ensure the accuracy of corrugated sheet unit upset back position, and then realize that corrugated sheet unit is positive and negative accurate stacks.

In addition, the two sides of the opening of the stacking frame are respectively provided with the supporting roller groups, so that the corrugated sheet units sent out from the conveying line group can be lapped on the supporting roller groups at the connecting positions at the two sides of the stacking frame, and can continuously move forwards on the supporting roller groups under the driving of the conveying line group until the corrugated sheet units completely fall into the opening range of the stacking frame, at the moment, the supporting roller groups at the two sides of the stacking frame are outwards moved to the stacking position by the expanding mechanism, and the corrugated sheet units can automatically fall into the stacking frame. It is understood that the spacing between the supporting roller sets in the accessing position is smaller than the width of the corrugated sheet unit, and the spacing between the supporting roller sets in the stacking position is larger than the width of the corrugated sheet unit.

It will be appreciated that since the conveyor lines serve primarily to convey the corrugated sheet units forwardly, the height of the accommodating space can be made greater than the height of the corrugated sheet units, i.e. the upper and lower conveyor lines need not clamp "bite" the corrugated sheet units and, correspondingly, the upper and lower conveyor lines need not loosen the corrugated sheet units when the corrugated sheet units are conveyed within the opening of the stacking frame, thereby greatly simplifying the control of the conveyor line groups.

Preferably, the turnover mechanism comprises a drive ring 6 and a support ring 7 which are connected at intervals outside the conveyor line group, the support ring is rotatably connected with the conveyor support, and the drive ring is connected with a power unit through a transmission mechanism. That is, the group of conveyor wires passes through the drive ring and the support ring. The power unit can drive the driving circular ring to rotate so as to drive the conveying line group to overturn, and the supporting circular ring plays a supporting role in the conveying line group so as to ensure that the conveying line group stably overturns relative to the conveying support.

When a support ring is arranged, the drive ring simultaneously plays a supporting role, and the drive ring and the support ring form a rotatable connection with the conveying line group and the conveying support together.

Certainly, the front and rear support rings can be arranged outside the conveying line group, so that stable support can be formed on the conveying line group, the driving ring is arranged in the middle of the conveying line group, the driving ring is a gear ring, the power unit is a stepping motor, and the stepping motor is associated with the driving ring through a gear transmission mechanism. At the moment, the driving ring only needs to bear the driving function, so that the stress of the driving ring and the torque which needs to be transmitted to the driving ring by the power unit through the transmission mechanism are reduced.

Furthermore, a baffle plate for shielding the side surface of the accommodating gap can be arranged on one side of the conveying line group, so that one side of the accommodating gap of the conveying line group is in a closed shape. When the conveying line group turns over to 90 degrees, the baffle is positioned at the lower side of the accommodating gap, so that the corrugated sheet unit in the accommodating gap can be prevented from falling downwards, and meanwhile, the baffle also has the function of positioning the side edge of the corrugated sheet unit, thereby facilitating the accurate butt joint of the subsequent corrugated sheet unit and the corrugated sheet unit stacking device.

As another preferred scheme, the opening mechanism comprises two opposite slide rails 8 which can move left and right and a driving element which is associated with the slide rails, and the supporting roller groups are arranged on the corresponding slide rails.

The driving element can adopt an air cylinder, an oil cylinder and an electric cylinder, when the driving element drives the two slide rails to move outwards relatively, the gap between the two groups of supporting roller groups can be increased, and at the moment, the corrugated sheet units supported on the two groups of supporting roller groups can automatically fall to form positive and negative stacked packing.

Further, a plurality of gathering barrier strips 81 which are arranged at intervals are vertically connected to the slide rail, and the gathering barrier strips are arranged between the corresponding rollers, so that the rollers and the gathering barrier strips are arranged at intervals one by one. When the driving element drives the two slide rails and the supporting roller set to move outwards to the stacking position and the corrugated sheet unit automatically falls, the driving element drives the slide rails and the supporting roller set to move inwards to the stacking position, the folding barrier strips can clamp the side edges of the corrugated sheet unit in the width direction at the moment, so that the corrugated sheet unit is stacked neatly, the distance between the rollers opposite to the left side and the right side is smaller than the width of the corrugated sheet unit, and the next corrugated sheet unit is conveniently overlapped and supported on the supporting roller set.

Further, the stacking frame includes a support base plate, and the corrugated sheet unit stacking apparatus further includes an elevating mechanism associated with the support base plate, the elevating mechanism causing the uppermost corrugated sheet unit stacked on the support base plate to have the same height.

It will be appreciated that the height of the stacking frame should be greater than the height of the entire packing material, so that the free fall height of the first corrugated sheet unit upon stacking into the stacking frame is much higher than the free fall height of the last corrugated sheet unit, and thus the corrugated sheet units in the previous stage are prone to shifting or even "flipping" during free fall.

The invention creatively arranges the supporting bottom plate associated with the lifting mechanism at the bottom of the stacking frame, thus the height of the supporting bottom plate can be correspondingly adjusted according to the serial number of the stacked corrugated sheet units, and then the uppermost corrugated sheet unit stacked on the supporting bottom plate is ensured to have the same proper height all the time, thereby effectively avoiding the problems of dislocation and even 'overturn' of the corrugated sheet unit when the corrugated sheet unit falls freely. That is, it is possible to make the uppermost corrugated sheet unit stacked on the support base have a small interval from the corrugated sheet units supported on the support roller set so that the corrugated sheet units of the support roller set are smoothly stacked on the corrugated sheet units of the support base.

It should be noted that, the lifting mechanism may adopt a mechanism of a stepping motor and a gear rack, so as to accurately control the lifting height of the supporting base plate.

In order to facilitate the inward and outward movement of the roller, the supporting roller group comprises a double-end motor 52 and a supporting seat 53 which are movably arranged on the stacking frame, and a plurality of rotating rods 54 connected to the inner side of the sliding rail, the roller is sleeved on the rotating rods, a chain wheel 55 is arranged at the outer end of the roller close to the sliding rail, a synchronizing rod 56 rotatably connected with the supporting seat is coaxially connected to the outer end of the output shaft of the double-end motor, a driving chain wheel 57 is arranged at the other end of the output shaft of the double-end motor, a chain 58 is wound on the driving chain wheel, and the chain sequentially bypasses the chain wheels on the rollers, so that all the chain wheels can be driven to rotate together. The rotating rod and the synchronizing rod are provided with the same spiral grooves, and the pitch of the inner ends of the spiral grooves is smaller than that of the outer ends of the spiral grooves, so that the variable-pitch spiral grooves are formed. The supporting seat and the roller are provided with pins positioned in the spiral grooves.

When the corrugated sheet units sent out by the conveying line group are lapped on the supporting roller group, the output shaft of the double-end motor rotates in the positive direction, the driving chain wheel, the chain and the chain wheel drive the rollers to rotate, and the supporting roller group drives the corrugated sheet units to move forwards to a set position. Because the pin is positioned at the end with smaller pitch in the variable pitch spiral groove, the double-head motor and the roller move outwards at low speed synchronously, and the corrugated sheet unit can still be lapped on the supporting roller group. The pin gets into the great one end of pitch spiral groove medium pitch after that, and double-end motor moves to the position of piling up with the synchronous high-speed outside of gyro wheel to make the automatic whereabouts of corrugated sheet unit: then the output shaft of the double-end motor rotates reversely, so that the rollers are driven to idle reversely through the chain transmission mechanism, the synchronous rod drives the double-end motor to move to the initial position from high speed to low speed inwards, and the rollers synchronously move to the access position from high speed to low speed inwards on the rotating rod, so that the subsequent corrugated sheet units are lapped on the supporting roller group.

That is, the double-head motor of the invention can drive the roller to rotate and can also transversely move synchronously with the roller all the time, thereby playing the role of an opening mechanism.

It should be noted that tensioning sprockets engaged with the chain can be disposed on the front and rear sides of the sprocket on the roller to ensure effective engagement of the chain with the sprocket. In addition, the spiral directions of the spiral grooves on the left side and the right side can be oppositely arranged, and at the moment, a double-head motor can simultaneously drive the synchronous rods on the two sides and the driving chain wheel to rotate; or the spiral directions of the spiral grooves on the left side and the right side are the same, at the moment, two double-head motors need to be arranged, and the rotating directions of the two double-head motors are opposite.

As an alternative to the opening mechanism, as shown in fig. 4, the opening mechanism includes rotating shafts 9 located at two sides of the bottom of the stacked frame, and a driving shaft 91 horizontally disposed between the two rotating shafts, a plurality of vertical closing bars are disposed on the rotating shafts at intervals, two ends of the driving shaft are respectively provided with a worm 911, the rotating shafts are provided with worm gears 90 engaged with the worms, the rotation directions of the worms at two ends of the driving shaft are opposite, and the driving shaft is associated with a stepping motor. When the supporting roller group is at the access position, the distance between the upper ends of the vertical gathering barrier strips at the two sides is smaller than the width of the corrugated sheet unit.

When the corrugated sheet unit is supported on the supporting roller set, the stepping motor drives the driving shaft to rotate, the rotating shafts at two ends of the driving shaft form reverse rotation through the matching of the worm and gear, so that the vertical gathering barrier is inclined outwards to form a V shape, and the corrugated sheet unit can conveniently fall freely from a larger opening at the upper end of the gathering barrier; then the stepping motor drives the rotating shafts at the two ends to rotate reversely through the driving shaft, so that the gathering barrier strips synchronously rotate inwards to be vertical, and the corrugated sheet units are clamped and gathered neatly. It can be understood that, because the gathering bar is driven by a stepping motor and a driving shaft to rotate, the action consistency can be ensured.