Dust collection mechanism for a three-dimensional packaging sheet unfolding device and corresponding device

Abstract

The present invention discloses a dust collection mechanism for a three-dimensional packaging sheet unfolding device and a corresponding device. Among them, the dust collection mechanism for the three-dimensional packaging sheet unfolding device includes a support plate provided below the clamping position for clamping the packaging sheet of the stretching mechanism of the three-dimensional packaging sheet unfolding device. The support plate has a through structure penetrating up and down, and the through structure is arranged to be able to accommodate the stretching mechanism; and a receiving unit provided below the support plate and the stretching mechanism, having a first opening facing upward; the support plate is fixedly arranged relative to the frame of the three-dimensional packaging sheet unfolding device; the receiving unit is movably arranged relative to the frame, or the receiving unit is detachably arranged on the frame. It can not only collect the dust generated during the production process, but also avoid the problems of deterioration of the production environment or decline in product quality caused by dust collection. Moreover, when there is a large amount of dust collection, it can ensure convenient cleaning while avoiding pollution of the working environment.

Description

Technical Field

[0001] The present invention relates to the field of preparation equipment for packaging materials, and in particular to a dust collection mechanism and a corresponding device for a three-dimensional packaging sheet unfolding device. Background Art

[0002] The three-dimensional packaging sheet unfolding device makes the packaging sheet unfold into a three-dimensional packaging sheet (such as honeycomb paper) by stretching the packaging sheet. This kind of packaging sheet that can form a three-dimensional packaging sheet by stretching has multiple gaps when not stretched, and the gaps of these gaps are relatively small. Generally, these gaps are arranged in an array on the packaging sheet. When the three-dimensional packaging sheet unfolding device stretches the packaging sheet, the gaps between the gaps of the stretched packaging sheet increase. During the process of the increase in the gaps, the edges forming the gaps will rub against each other when moving away from each other, generating dust. As the operation time of the three-dimensional packaging sheet unfolding device increases, a large amount of dust accumulates inside the device. If not cleaned in time, it may cause device failures or result in more dust on the three-dimensional packaging sheet formed by stretching, leading to a decline in the quality of the produced three-dimensional packaging sheet.

[0003] Therefore, after the current device has been used for a period of time, it is necessary to remove the outer shell of the device, and then clean the device by blowing the dust inside the device with high-pressure air. However, this cleaning method is not only inconvenient to operate, but also the blown dust will cause certain pollution to the production environment. Summary of the Invention

[0004] In order to facilitate the removal of dust in the three-dimensional packaging sheet unfolding device and not have an adverse impact on the production environment during the removal process, according to one aspect of the present invention, a dust collection mechanism for a three-dimensional packaging sheet unfolding device is provided.

[0005] The dust collection mechanism for the three-dimensional packaging sheet unfolding device includes a support plate provided below the clamping position for clamping the packaging sheet of the stretching mechanism of the three-dimensional packaging sheet unfolding device. The support plate has a through structure extending vertically, and the through structure is arranged to accommodate the stretching mechanism; and a receiving unit provided below the support plate and the stretching mechanism, having a first opening facing upward; wherein the support plate is fixedly provided relative to the frame of the three-dimensional packaging sheet unfolding device; the receiving unit is movably provided relative to the frame, or the receiving unit is detachably provided on the frame.

[0006] The three-dimensional packaging sheet unfolding device stretches the packaging sheet through a stretching mechanism, so that the gap of the packaging sheet passing through the gap is increased to form a three-dimensional packaging sheet. Since the present invention sets a accommodating unit with a first opening facing upward below the stretching mechanism, the dust generated when the stretching mechanism stretches the packaging sheet can fall into the accommodating unit through the first opening, and the dust generated when the packaging sheet is stretched can be stored by the accommodating unit; and since the present invention also sets a support plate below the clamping part of the stretching mechanism for clamping the packaging sheet, and the support plate has an accommodating structure that runs through the upper and lower parts for accommodating the stretching mechanism, and since the accommodating unit is also arranged below the support plate, the dust generated when the packaging sheet is stretched can directly fall from the accommodating structure to the accommodating unit, or it can be scattered on the support plate. When the stretching mechanism stretches the packaging sheet, the packaging sheet moved by the stretching can drive the dust scattered on the support plate to move to the accommodating structure, so that the dust falls from the accommodating structure to the accommodating unit, completing the accommodating unit. The support plate can also provide guidance for the movement of the packaging sheet to prevent the sheet from being drawn into the interior of the three-dimensional packaging sheet unfolding device when it moves. When the dust contained in the accommodating unit is large, the accommodating unit can be moved relative to the frame so as to clean the dust contained in the accommodating unit without disassembling the frame. The operation process is convenient and quick, and the cleaning process does not require the use of high-pressure airflow, and the dust contained in the accommodating unit will not be blown up, causing the production environment to be polluted.

[0007] In some embodiments, the accommodating structure is a through groove that penetrates from the feeding end of the three-dimensional packaging sheet unfolding device to the discharging end of the three-dimensional packaging sheet unfolding device. This facilitates most of the dust generated when the stretching mechanism stretches the packaging sheet to fall into the accommodating unit through the through groove. Preferably, the support plate includes a first connecting plate for being arranged on the feeding end of the machine frame, a second connecting plate for being arranged on the discharging end of the machine frame, and a connecting rod connecting the first connecting plate and the second connecting plate. The adjacent connecting rod, first connecting plate, and second connecting plate enclose the through groove together. This facilitates the connection between the support plate and the machine frame. Further, the top of the connecting rod is its edge, so that the contact between the connecting rod and the packaging sheet is a line contact, which facilitates the dust falling on the connecting rod to move under its own gravity or under the drive of the packaging sheet and fall into the accommodating unit; or the angle between the end of the connecting rod close to the second connecting plate and the discharging direction in the horizontal plane is greater than 0° and less than 90°, which facilitates the packaging sheet to drive the dust falling on the connecting rod during movement, so that the moving dust can gradually move out of the upper surface of the connecting rod and finally fall into the accommodating unit; preferably, one side of the support plate close to the discharging end of the three-dimensional packaging sheet unfolding device is inclined downward to avoid hindering the discharging of the packaging sheet and at the same time prevent dust from accumulating on the support plate; or the accommodating structure includes a first through hole and a second through hole. Among them, the first through hole is arranged to allow the stretching mechanism to extend in. Therefore, in addition to falling into the accommodating unit through the first through hole, the dust generated when stretching the packaging sheet can also fall into the accommodating unit through the second through hole; preferably, at least one of the first through hole and the second through hole has a plurality of them, and the first through hole and / or the second through hole are staggered on the support plate, that is, the first through hole is staggered, or the second through hole is staggered, or the first through hole and the second through hole are staggered, which facilitates the packaging sheet to drive the dust on the support plate into the first through hole and / or the second through hole during movement.

[0008] In some embodiments, the accommodating unit includes at least one of a first drawer and a second drawer. Preferably, the first drawer and the second drawer are arranged to be reciprocally movable along the stretching direction of the stretching mechanism; the first drawer is adapted to be arranged on the machine frame and is arranged to be able to move out of the machine frame from the feeding end of the three-dimensional packaging sheet unfolding device; the second drawer is adapted to be arranged on the machine frame and is arranged to be able to move out of the machine frame from the discharging end of the three-dimensional packaging sheet unfolding device. This facilitates that when there is more dust in the drawer, the drawer can be pulled out of the machine frame to facilitate the cleaning of the dust in the drawer.

[0009] In some embodiments, the second drawer is arranged to be magnetically adsorbed on the machine frame. This is to prevent the second drawer from moving in the discharging direction due to the vibration of the device during the use of the three-dimensional packaging sheet unfolding device, resulting in the drawer being unable to completely collect the dust during the production process.

[0010] In some embodiments, the dust collection mechanism further includes a first guiding plate for guiding dust into the second drawer. There are two first guiding plates, which are respectively arranged on both sides of the moving direction of the second drawer, and the first guiding plate is located above the second drawer. This can prevent the dust falling from the accommodation structure from falling into the gap between the second drawer and the machine frame.

[0011] According to one aspect of the present invention, a three-dimensional packaging sheet unfolding device is provided.

[0012] The three-dimensional packaging sheet unfolding device includes: a machine frame; and a stretching mechanism and a dust collection mechanism arranged on the machine frame for stretching the packaging sheet; wherein, the dust collection mechanism is the aforementioned dust collection mechanism. Thus, the machine frame integrates the stretching mechanism and the dust collection mechanism, and the position of the three-dimensional packaging sheet unfolding device can be adjusted only by moving the machine frame, which is convenient to operate.

[0013] In some embodiments, the stretching mechanism includes a feeding roller unit, a discharging roller unit both arranged on the machine frame, and a driving unit for driving the feeding roller unit and the discharging roller unit to move; wherein, the feeding roller unit is arranged at the feeding end of the machine frame; the discharging roller unit is arranged at the discharging end of the machine frame; the driving unit is arranged between the feeding roller unit and the discharging roller unit; the machine frame covers the feeding roller unit and the discharging roller unit therein. Thus, by using one driving unit to drive two groups of roller units, while achieving energy saving, arranging the driving unit between the two groups of roller units can keep the structure of the three-dimensional packaging sheet unfolding device compact.

[0014] In some embodiments, the feeding roller unit is provided with at least one group of roller structures, and one group of roller structures includes two rollers arranged up and down; the discharging roller unit is provided with at least two groups of roller structures arranged side by side, or the discharging roller unit is provided with at least one group of roller structures, and at least one roller in at least one group of roller structures is provided with at least one groove. This can prevent the rollers at the discharging end from completely flattening the three-dimensional packaging sheet formed by stretching.

[0015] In some embodiments, the support plate includes a first connecting plate arranged at the feeding end of the machine frame, a second connecting plate arranged at the discharging end of the machine frame, and a connecting rod connecting the first connecting plate and the second connecting plate and located between adjacent roller structures. The adjacent connecting rods, the first connecting plate and the second connecting plate enclose an accommodation structure for the roller arranged below in the roller structure of the discharging roller unit to pass through. Thus, even if the support plate is provided, it will not affect the operation of the discharging roller unit; moreover, the connecting rods in the support plate extend from the feeding end to the discharging end, and the adjacent connecting rods, the first connecting plate and the second connecting plate enclose an accommodation structure for the stretching mechanism to pass through, so that the support plate can provide support for the packaging sheet while facilitating the dust to fall into the accommodation unit from the accommodation structure.

[0016] In some embodiments, the three-dimensional packaging sheet unfolding device further includes a housing covering the outside of the driving unit to avoid dust pollution of the driving unit. Preferably, the top of the housing abuts against the bottom surface of the support plate. Thus, dust accumulation between the housing and the support plate can be avoided, and moreover, the dust between the support rods on the housing can move along with the movement of the packaging sheet until it separates from the housing and falls into the accommodating unit.

[0017] In some embodiments, the accommodating unit includes at least one of a first drawer and a second drawer; the first drawer and the second drawer are arranged to be reciprocally movable along the stretching direction of the stretching mechanism; the first drawer is fitted on the frame and arranged to be movable out of the frame from the feeding end of the three-dimensional packaging sheet unfolding device; the second drawer is fitted on the frame and arranged to be movable out of the frame from the discharging end of the three-dimensional packaging sheet unfolding device; the first side wall of the second drawer close to the housing is disposed below the housing. Preferably, the top of the first side wall is inclined towards the side where the feeding end is located; the third side wall of the first drawer close to the housing is disposed below the housing. Preferably, the lower part of the second side wall of the housing close to the first drawer is inclined towards the side where the feeding end is located, and / or the top of the second side wall is inclined towards the side where the discharging end is located.

[0018] Thus, the dust between the support rods on the housing can move along with the movement of the packaging sheet until it falls into the first drawer or the second drawer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Structural schematic diagram of a three-dimensional packaging sheet unfolding device including a dust collection mechanism for a three-dimensional packaging sheet unfolding device according to an embodiment of the present invention;

[0020] Figure 2 For Figure 1 Structural schematic diagram of another perspective of the three-dimensional packaging sheet unfolding device shown;

[0021] Figure 3 For Figure 1 Structural schematic diagram of yet another perspective of the three-dimensional packaging sheet unfolding device shown;

[0022] Figure 4 For Figure 3 Structural schematic diagram of a sectional view along A-A of the three-dimensional packaging sheet unfolding device shown;

[0023] Figure 5 For Figure 4 Structural schematic diagram of another perspective of the sectional structure of the three-dimensional packaging sheet unfolding device shown;

[0024] Figure 6 For Figure 3 Structural schematic diagram of a sectional view along B-B of the three-dimensional packaging sheet unfolding device shown;

[0025] Figure 7 is Figure 1 The structural schematic diagram of the three-dimensional packaging sheet unfolding device shown after omitting the upper cover of the frame;

[0026] Figure 8 is Figure 7 The structural schematic diagram of the three-dimensional packaging sheet unfolding device shown with the second drawer in an open state;

[0027] Figure 9 The structural schematic diagram of the support plate according to the first embodiment of the present invention;

[0028] Figure 10 The structural schematic diagram of the support plate according to the second embodiment of the present invention;

[0029] Figure 11 The structural schematic diagram of the support plate according to the third embodiment of the present invention;

[0030] Figure 12 The structural schematic diagram of the support plate according to the fourth embodiment of the present invention shown in combination with the three-dimensional packaging sheet unfolding device;

[0031] Reference numerals: 20, frame; 201, feeding end; 202, discharging end; 2001, first feeding port; 2002, second feeding port; 2003, discharging port; 21, upper cover; 22, strengthening frame; 221, magnet; 23, slide rail baffle; 30, stretching mechanism; 300, roller structure; 301, roller; 31, feeding roller unit; 32, discharging roller unit; 33, driving unit; 40, support plate; 41, first connecting plate; 42, second connecting plate; 43, connecting rod; 431, edge; 432, inclined surface; 400, through groove; 401, first through hole; 402, second through hole; 51, first drawer; 511, third side wall; 52, second drawer; 521, first side wall; 53, handle; 61, first guide plate; 62, cover body; 621, second side wall; 63, first protective cover; 64, second protective cover. Detailed embodiments

[0032] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0033] It should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising" and "including" not only include those elements, but also other elements not explicitly listed, or elements inherent to such a process, method, article, or device. Without further limitation, an element defined by the statement "comprising..." does not exclude the existence of additional identical elements in the process, method, article, or device that includes the said element. The terms used in this text are generally the commonly used terms in the art. If they are inconsistent with the commonly used terms, the terms in this text shall prevail.

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Figures 1 to 8 Schematically shows an embodiment of the dust collection mechanism for the three-dimensional packaging sheet unfolding device according to the present invention.

[0036] As Figures 4 to 8 shown, the dust collection mechanism for the three-dimensional packaging sheet unfolding device includes a support plate 40 and a receiving unit; wherein, the support plate 40 is fixedly arranged relative to the frame 20 of the three-dimensional packaging sheet unfolding device, the support plate 40 is arranged below the clamping position of the stretching mechanism 30 of the three-dimensional packaging sheet unfolding device for clamping the packaging sheet, the stretching mechanism 30 is generally implemented as at least one set of roller structures 300 arranged at the feeding port and at least one set of roller structures 300 arranged at the discharging port 2003, each set of roller structures 300 includes a roller 301 arranged at the upper part and a roller 301 arranged at the lower part, and the roller 301 at the upper part and the roller 301 at the lower part of each set of roller structures 300 clamp the packaging sheet by means of their outer diameters abutting against each other; a relief structure penetrating the support plate 40 up and down is integrally formed or processed on the support plate 40, and this relief structure can avoid the stretching mechanism 30; the receiving unit is movably arranged relative to the frame 20, or the receiving unit is detachably arranged on the frame 20, the receiving unit is arranged below the support plate 40 and the stretching mechanism 30, and the receiving unit is integrally formed or processed with a first opening facing towards. In the present invention, the relief structure is a structure that can avoid the stretching mechanism 30 and can accommodate at least part of the stretching mechanism 30, and penetrates the support plate 40, such as a common up-and-down penetrating structure such as a through groove 400 or a through hole.

[0037] As the first implementation of the support plate 40, as shown in Figure 5 , Figure 7 and Figure 9 , the accommodating structure is implemented as an integrally formed or machined through slot 400 on the support plate 40 that can at least avoid the roller 301 at the discharge end of the stretching mechanism 30. Exemplarily, such a through slot 400 can be obtained by setting the structure of the support plate 40. For example, as shown in Figure 5 , Figure 7 and Figure 9 , the support plate 40 includes a first connecting plate 41 for being arranged on the feeding end 201 of the frame 20, a second connecting plate 42 for being arranged on the discharge end 202 of the frame 20, and a connecting rod 43 connecting the first connecting plate 41 and the second connecting plate 42. The adjacent connecting rod 43, first connecting plate 41, and second connecting plate 42 enclose the through slot 400. Exemplarily, the cross-section of the connecting rod 43 can be circular or square.

[0038] As the second implementation of the support plate 40, as shown in Figure 10 , the composition structure of the support plate 40 can refer to the first implementation of the support plate 40, including connecting the first connecting plate 41 and the second connecting plate 42 through the connecting rod 43. The main difference from the support plate 40 in the first implementation is the specific shape of the connecting rod 43. Specifically, the top of the connecting rod 43 is its edge 431, so that the connecting rod 43 and the packaging sheet it supports are in line contact through the edge 431. The implementation form of the top of the connecting rod 43 being the edge 431 can be that inclined surfaces 432 are provided on both the left and right sides of the edge 431, or that an inclined surface 432 is provided only on one side (left or right) of the edge 431 to avoid dust deposition on the support plate 40.

[0039] As the third implementation of the support plate 40, as shown in Figure 11 , the accommodating structure provided on the support plate 40 includes a first through hole 401 and a second through hole 402 that are integrally formed or machined on the support plate 40. Among them, the first through hole 401 is arranged to allow at least a part of the discharge end of the stretching mechanism 30 to extend in. Preferably, at least one of the first through hole 401 and the second through hole 402 has a plurality of them, and the plurality of first through holes 401 are staggered on the support plate 40, or the plurality of second through holes 402 are staggered on the support plate 40, or the first through hole 401 and the second through hole 402 are staggered with each other, so that the dust deposited on the support plate 40 can be driven by the packaging sheet to move and fall into the first through hole 401 or the second through hole 402.

[0040] As the fourth implementation of the support plate 40, as shown in Figure 12As shown, the difference from the first embodiment of the support plate 40 mainly lies in that the angle between the end of the connecting rod 43 close to the second connecting plate 42 and the discharging direction on the horizontal plane is greater than 0° and less than 90°, that is, the end of the connecting rod 43 close to the second connecting plate 42 is inclined on the horizontal plane, so that the dust deposited on the support plate 40 can be driven by the packaging sheet to move and fall into the first through hole 401 or the second through hole 402.

[0041] Regardless of which embodiment the support plate 40 adopts, preferably, as Figure 4 , Figures 9 to 11 shown, one side of the support plate 40 close to the discharging end 202 of the three-dimensional packaging sheet unfolding device is inclined downward to facilitate the discharging of the packaging sheet.

[0042] As one of the embodiments of the accommodating unit, as Figures 4 to 8 shown, the accommodating unit is implemented as a drawer adapted to the frame 20.

[0043] During the use of the three-dimensional packaging sheet unfolding device, by setting the rotation speed of the roller structure 300 at the feeding port to be less than that of the roller structure 300 at the discharging port 2003, the stretching of the packaging sheet clamped between the feeding port and the discharging port 2003 can be achieved through the speed difference between the roller structure 300 at the feeding port and the roller structure 300 at the discharging port 2003. In the present invention, a receiving unit with an upward-facing first opening is provided below the stretching mechanism 30. The dust generated when the stretching mechanism 30 stretches the packaging sheet can fall into the receiving unit through the first opening, and the receiving unit can collect the dust generated when the packaging sheet is stretched. Moreover, since the present invention also provides a support plate 40 below the clamping position of the stretching mechanism 30 for clamping the packaging sheet, and the support plate 40 has a receiving structure that penetrates up and down for accommodating the stretching mechanism 30, and since the receiving unit is also provided below the support plate 40, the dust generated when the packaging sheet is stretched can directly fall to the receiving unit from the receiving structure, or can be scattered on the support plate 40, and then move to the receiving structure under the drive of the stretched packaging sheet and fall to the receiving unit from the receiving structure to complete the collection of dust by the receiving unit. Moreover, since the support plate 40 separates the packaging sheet from the receiving unit, it can greatly reduce the possibility that the dust collected by the receiving unit is lifted due to the movement of the packaging sheet, and can also prevent the packaging sheet from bringing out the dust in the receiving unit when contacting the dust collected in the receiving unit, resulting in a large amount of dust carried by the prepared three-dimensional packaging sheet and poor quality. When there is a large amount of dust in the receiving unit, the receiving unit can be moved relative to the frame 20 so as to clean the dust in the receiving unit without disassembling the frame 20. The operation process is convenient and fast, and the cleaning process does not require the assistance of high-pressure air flow, and the production environment will not be polluted due to the high-pressure air flow blowing up the dust in the receiving unit.

[0044] As an embodiment of the receiving structure, the receiving structure is a through groove 400 integrally formed or processed on the support plate 40, and a plurality of such through grooves 400 are provided. Preferably, at least the through groove 400 at the discharging port 2003 can avoid the roller 301 located here. In some embodiments, the through grooves 400 at the feeding port and the discharging port 2003 can avoid the roller 301 located here. Of course, through grooves 400 can also be provided at the part of the support plate 40 between the feeding port and the discharging port 2003. The through grooves 400 between the feeding port and the discharging port 2003 can be relatively independent of the through grooves 400 at the feeding port and the discharging port 2003, and the through grooves 400 between the feeding port and the discharging port 2003 can be distributed in a regular array or randomly. The main purpose of providing the through grooves 400 between the feeding port and the discharging port 2003 is to facilitate the dust generated during the stretching process of the packaging sheet to fall into the receiving unit and reduce the dust deposited on the support plate 40. As a preferred embodiment of the receiving structure, asFigure 5 As shown, the accommodating structure is a through groove 400 integrally formed or machined on the support plate 40, and the through groove 400 extends from the feeding end 201 of the three-dimensional packaging sheet unfolding device to the discharging end 202 of the three-dimensional packaging sheet unfolding device. When the stretching mechanism 30 includes the roller structure 300 at the feeding port and the roller structure 300 at the discharging port 2003, the through groove 400 extends at least from the location of the roller structure 300 at the feeding port to the location of the roller structure 300 at the discharging port 2003, so that most of the dust generated when the packaging sheet between the feeding port and the discharging port 2003 is stretched can fall into the accommodating unit through the through groove 400, only a small amount is deposited on the support plate 40, and most of the dust deposited on the support plate 40 will also move to the through groove 400 along with the moving packaging sheet and then fall into the accommodating unit.

[0045] As one embodiment of the accommodating unit, as Figures 1 to 8 shown, the accommodating unit includes at least one of the first drawer 51 and the second drawer 52. The first drawer 51 and / or the second drawer 52 can be arranged on any side of the frame 20 as required. However, since the stretching mechanism 30 is generally arranged on both sides of the frame 20 along the stretching direction, and the driving unit 33 for driving the stretching mechanism 30 to move is generally arranged on the side of the frame 20 where the stretching mechanism 30 is provided, therefore, in order to avoid the first drawer 51 and the second drawer 52 arranged on the bracket affecting the operation of the stretching mechanism 30 and the driving unit 33, and at the same time avoid the problem of the large volume of the device caused by the mutual avoidance between the mechanisms due to arranging the stretching mechanism 30, the driving unit 33, the first drawer 51 and the second drawer 52 on the same side of the frame 20, preferably, the first drawer 51 and the second drawer 52 are arranged to be reciprocally movable along the stretching direction of the stretching mechanism 30; the first drawer 51 is adapted to the frame 20 and is arranged to be able to move out of the frame 20 from the feeding end 201 of the three-dimensional packaging sheet unfolding device; the second drawer 52 is adapted to the frame 20 and is arranged to be able to move out of the frame 20 from the discharging end 202 of the three-dimensional packaging sheet unfolding device. Thus, it is convenient to clean the dust in the drawer, and the compactness of the structure of the three-dimensional packaging sheet unfolding device provided with the dust collection mechanism can be maintained.

[0046] Since the stretching mechanism 30 of the three-dimensional packaging sheet unfolding device drives the packaging sheet to move along the direction from the feeding end 201 to the discharging end 202 when stretching the packaging sheet, the first drawer 51 and the second drawer 52 also tend to move along the direction from the feeding end 201 to the discharging end 202 during the operation of the three-dimensional packaging sheet unfolding device. In order to prevent the first drawer 51 and the second drawer 52 from moving during the operation of the three-dimensional packaging sheet unfolding device, as a preferred embodiment of the first drawer 51, as Figure 2 and Figure 5As shown, the outer surface of the first drawer 51 extends to the outside of the side wall of the first drawer 51, and the part of the outer surface of the first drawer 51 that extends outside its side wall can abut against the end face of the feeding end 201 of the rack 20 when the first drawer 51 is pushed into the rack 20. As a preferred embodiment of the second drawer 52, the second drawer 52 is arranged to be magnetically adsorbed on the rack 20. Exemplarily, the outer surface of the second drawer 52 extends to the outside of the side wall of the second drawer 52, and the part of the outer surface of the second drawer 52 that extends outside its side wall can abut against the end face of the discharging end 202 of the rack 20 when the second drawer 52 is pushed into the rack 20. At least one of the abutting portions between the second drawer 52 and the end face of the discharging end 202 is provided with a magnet 221, and the other portion can be provided with a magnet 221 or a ferromagnetic member that can be magnetically adsorbed. Alternatively, at least one of the rack 20 or the second drawer 52 can be made of a material that can be magnetically adsorbed. To solve the problem of possible insufficient strength caused by arranging the second drawer 52 at the outlet end of the rack 20, as Figure 8 shown, the width of the second drawer 52 is set to be smaller than the width of the first drawer 51, that is, the second drawer 52 is miniaturized, so as to add a reinforcing frame 22 to the original frame of the rack 20. The added reinforcing frame 22 is part of the rack 20 and serves to improve the strength of the rack 20. The reinforcing frame 22 is located at the discharging end 202 of the rack 20 and is arranged around the two sides and the upper part of the second drawer 52 to strengthen the strength of the rack 20 between the second drawer 52 and the discharging port 2003. When the second drawer 52 is magnetically adsorbed on the rack 20, the magnet 221 can be arranged on the reinforcing frame 22, and a magnetic member can be arranged at the corresponding position on the outer surface of the second drawer 52 or the second drawer 52 can be made of a material that can be magnetically adsorbed. Alternatively, the magnet 221 can be arranged on the outer surface of the second drawer 52, and a magnetic member can be arranged at the corresponding position on the reinforcing frame 22 or the reinforcing frame 22 can be made of a material that can be magnetically adsorbed. Further, since the second drawer 52 is miniaturized, it is easy for the dust falling from the through groove 400 to fall into the gap between the second drawer 52 and the rack 20, resulting in difficult cleaning of the dust at this place. To solve this problem, preferably, as Figure 6As shown in the figure, the dust collection mechanism further includes a first guiding plate 61 for guiding dust into the second drawer 52. There are two first guiding plates 61, which are respectively arranged on both sides of the moving direction of the second drawer 52. The first guiding plate 61 is located above the second drawer 52. Exemplarily, there are at least two first guiding plates 61, and the two first guiding plates 61 are respectively connected to the two side walls of the frame 20. The free end of the first guiding plate 61 inclines downward and is located directly above the second drawer 52, that is, the second guiding plate is a plate-like structure inclined on the side wall of the frame 20. Further, since the second drawer 52 is miniaturized and the frame 20 includes a strengthening frame 22 arranged on both sides and the top of the second drawer 52, the second drawer 52 is likely to shake relative to the strengthening frame 22 during pulling. To solve this problem, preferably, as Figure 6 shown, the frame 20 further includes slide rail stoppers 23 arranged on both sides of the second drawer 52 for defining the moving direction of the second drawer 52.

[0047] To facilitate the operator to move the first drawer 51 and the second drawer 52, as a preferred embodiment of the first drawer 51 and the second drawer 52, as Figure 2 shown, a handle 53 is connected to the outer surface of the first drawer 51. As a preferred embodiment of the second drawer 52, as Figure 1 shown, a handle 53 is connected to the outer surface of the second drawer 52. In the present invention, the outer surface of the drawer refers to the surface of the drawer that is exposed to the outside when the drawer is not pulled out from the frame 20.

[0048] Figures 1 to 8 Schematically shows a three-dimensional packaging sheet unfolding device according to an embodiment of the present invention.

[0049] As Figure 4 and Figure 5 shown, the three-dimensional packaging sheet unfolding device includes a frame 20, a stretching mechanism 30 and a dust collection mechanism; wherein, the stretching mechanism 30 is arranged on the frame 20; the dust collection mechanism is the aforementioned dust collection mechanism, and it can be determined whether to be arranged on the frame 20 according to needs. Preferably, the dust collection mechanism is arranged on the frame 20 so as to integrate the stretching mechanism 30 and the dust collection mechanism through the frame 20, which is convenient for carrying the device and adjusting the position during use.

[0050] Generally, as Figures 1 to 5As shown, the frame 20 houses the stretching mechanism 30 and the dust collection mechanism, leaving only a first feed port 2001 at the feed end 201 on the frame 20 for the packaging sheet to be stretched to enter the stretching mechanism 30, a discharge port 2003 at the discharge end 202 for the prepared three-dimensional packaging sheet to be output to the outside, and an opening adapted to the first drawer 51 and the second drawer 52. Since the three-dimensional packaging sheet is a three-dimensional sheet formed by increasing the gap spacing and is used as a packaging material that can play a buffering role, when an airtight material is also required during packaging, a second feed port 2002 for the seamless sheet to enter can be provided in the three-dimensional packaging sheet unfolding device. Since the seamless sheet does not need to be stretched by the roller structure 300 at the feed end 201 and the discharge end 202, the second feed port 2002 is generally provided between the first feed port 2001 and the discharge port 2003. Preferably, as Figure 1 and Figure 4 shown, the second feed port 2002 is provided at the upper cover 21 of the frame 20. Thus, the seamless sheet entering through the second feed port 2002 can be driven by the roller structure 300 at the discharge end 202 and output together with the three-dimensional packaging sheet, so as to perform packaging operations at the discharge end 202 of the three-dimensional packaging sheet unfolding device, improving the packaging efficiency.

[0051] As one implementation of the stretching mechanism 30, as Figure 4 and Figure 5 shown, the stretching mechanism 30 includes a feed roller unit 31, a discharge roller unit 32 both provided on the frame 20, and a drive unit 33 for driving the feed roller unit 31 and the discharge roller unit 32 to move; among them, the feed roller unit 31 is provided at the feed end 201 of the frame 20; the discharge roller unit 32 is provided at the discharge end 202 of the frame 20; the drive unit 33 is provided between the feed roller unit 31 and the discharge roller unit 32; the frame 20 houses the feed roller unit 31 and the discharge roller unit 32 therein, so as to drive the two groups of roller units by one drive unit 33 to achieve energy saving. At the same time, setting the drive unit 33 between the two groups of roller units can keep the structure of the three-dimensional packaging sheet unfolding device compact. Preferably, as Figure 4 and Figure 5As shown, the three-dimensional packaging sheet unfolding device further includes a housing 62 covering the outside of the driving unit 33. Preferably, the top of the housing 62 abuts against the bottom surface of the support plate 40 to prevent dust from accumulating between the housing 62 and the support plate 40. Moreover, the dust between the support rods on the housing 62 can move along with the movement of the packaging sheet until it separates from the housing 62 and falls into the accommodating unit. Further, the span of the housing 62 is greater than the span of the support plate 40, so that the outer shape of the accommodating unit can be set to be relatively regular. Further, when the accommodating unit includes at least one of the first drawer 51 and the second drawer 52; the first drawer 51 and the second drawer 52 are arranged to reciprocate along the stretching direction of the stretching mechanism 30; the first drawer 51 is adapted to the frame 20 and is arranged to be able to move out of the frame 20 from the feeding end 201 of the three-dimensional packaging sheet unfolding device; the second drawer 52 is adapted to the frame 20 and is arranged to be able to move out of the frame 20 from the discharging end 202 of the three-dimensional packaging sheet unfolding device; the first side wall 521 of the second drawer 52 close to the housing 62 is arranged below the housing 62. Preferably, the top of the first side wall 521 is inclined towards the side where the feeding end 201 is located, so that the second drawer 52 can completely receive the dust moving towards the discharging port 2003 on the housing 62 and prevent the dust on the housing 62 from falling into the gap between the housing 62 and the second drawer 52; the third side wall 511 of the first drawer 51 close to the housing 62 is arranged below the housing 62, so that the first drawer 51 can completely receive the dust moving towards the feeding port on the housing 62 and prevent the dust on the housing 62 from falling into the gap between the housing 62 and the first drawer 51. Preferably, the lower part of the second side wall 621 of the housing 62 close to the first drawer 51 is inclined towards the side where the feeding end 201 is located, or the top of the second side wall 621 is inclined towards the side where the discharging end 202 is located, or the lower part of the second side wall 621 of the housing 62 close to the first drawer 51 is inclined towards the side where the feeding end 201 is located while the top of the second side wall 621 is inclined towards the side where the discharging end 202 is located, so that the dust between the support rods on the housing 62 can move along with the movement of the packaging sheet until it falls into the first drawer 51 or the second drawer 52.

[0052] As one implementation of the feeding roller unit 31 and the discharging roller unit 32, the feeding roller unit 31 is provided with at least one set of roller structures 300, and the discharging roller unit 32 is provided with at least two sets of roller structures 300 arranged side by side. Among them, being arranged side by side means that the axes of the rollers 301 at the upper part of every two sets of roller structures 300 are coaxial, and the axes of the rollers 301 at the lower part of every two sets of roller structures 300 are also coaxial; or the discharging roller unit 32 is provided with at least one set of roller structures 300, and at least one groove is integrally formed or processed on at least one roller 301 in at least one set of roller structures 300, so as to prevent the rollers 301 of the discharging roller unit 32 from completely flattening the three-dimensional packaging sheet. As one implementation of the feeding roller unit 31 and the discharging roller unit 32, referring to Figure 4 As shown, both the feeding roller unit 31 and the discharging roller unit 32 are provided with multiple sets of roller structures 300 arranged coaxially. Each set of roller structures 300 includes two rollers 301 arranged up and down, and each set of roller structures 300 of the feeding roller unit 31 and the discharging roller unit 32 is arranged correspondingly; the support plate 40 includes a first connecting plate 41 arranged on the feeding end 201 of the frame 20, a second connecting plate 42 arranged on the discharging end 202 of the frame 20, and a connecting rod 43 connecting the first connecting plate 41 and the second connecting plate 42 and located between adjacent roller structures 300. The adjacent connecting rods 43, the first connecting plate 41 and the second connecting plate 42 enclose a accommodating structure through which the stretching mechanism 30 can pass. Preferably, when both the feeding roller unit 31 and the discharging roller unit 32 include multiple sets of roller structures 300, the support plate 40 includes multiple connecting rods 43, and all the connecting rods 43 are connected through the first connecting plate 41 and the second connecting plate 42. A connecting rod 43 can be arranged between adjacent roller structures 300, or a connecting rod 43 can be arranged between two sets of roller structures 300, three sets of roller structures 300 or multiple sets of roller structures 300. The number of roller structures 300 spaced between adjacent two connecting rods 43 can be set arbitrarily as needed. Preferably, each set of roller structures 300 is separated by a connecting rod 43, so as to avoid the connecting rod 43 affecting the operation of the roller structures 300 while preventing the packaging sheet from falling into the first drawer 51 or the second drawer 52, and also reducing the possibility of the dust falling into the first drawer 51 and the second drawer 52 escaping from the through groove 400 between adjacent connecting rods 43. Preferably, when the cover body 62, the first drawer 51 and the second drawer 52 are provided at the same time, the cover body 62 separates the first drawer 51 from the second drawer 52, so that the first drawer 51 and the second drawer 52 can still avoid the dust on the cover body 62 falling into the gap between the cover body 62 and the first drawer 51 or the second drawer 52 while maintaining a square shape.

[0053] In order to reduce the amount of dust escaping from the discharge port 2003 and the first feed port 2001, preferably, the three-dimensional packaging sheet unfolding device further includes at least one of a first protective cover 63 and a second protective cover 64. Both the first protective cover 63 and the second protective cover 64 are connected to the frame 20. The first protective cover 63 encloses the upper roller 301 in the feed roller unit 31 in the cavity between it and the frame 20, and only a through groove 400 for the upper roller 301 to pass through is integrally formed or machined on the first protective cover 63. The second protective cover 64 encloses the upper roller 301 in the discharge roller unit 32 in the cavity between it and the frame 20, and only a through groove 400 for the upper roller 301 to pass through is integrally formed or machined on the second protective cover 64.

[0054] In the present invention, orientations such as above and below do not correspond to the state of the drawing, but rather to the usage state of the three-dimensional packaging sheet unfolding device.

[0055] In the present invention, the manner in which the drive unit 33 drives the feed roller unit 31 and the discharge roller unit 32 is a commonly used manner in the prior art, such as the manner of driving a synchronous pulley through a belt, or the manner of driving through a gear, etc. The present invention does not limit the specific manner in which the drive unit 33 drives the feed roller unit 31 and the discharge roller unit 32.

[0056] In the present invention, connections or installations are fixed connections without special emphasis. Fixed connections can be realized as detachable connections or non-detachable connections commonly used in the prior art. Detachable connections can be achieved using the prior art, such as threaded connections or key connections. Non-detachable connections can also be achieved using the prior art, such as welding or gluing.

[0057] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several variations and improvements can still be made, and these all fall within the protection scope of the present invention.

Claims

1. Dust collection mechanism for the unfolding device of three-dimensional packaging sheets, characterized in that, Comprising: A support plate disposed below the clamping portion for clamping the packaging sheet of the stretching mechanism of the three-dimensional packaging sheet unfolding device, the support plate having a receiving structure penetrating up and down, and the receiving structure being configured to receive the stretching mechanism; And a receiving unit disposed below the support plate and the stretching mechanism and having an upwardly opening first opening; wherein, The support plate is fixedly disposed relative to the frame of the three-dimensional packaging sheet unfolding device; The receiving unit is movably disposed relative to the frame, or the receiving unit is detachably disposed on the frame; The receiving structure is a through groove penetrating from the feeding end to the discharging end of the three-dimensional packaging sheet unfolding device, the through groove being capable of avoiding the roller at the discharging end of the stretching mechanism and allowing dust generated during stretching of the packaging sheet to fall into the receiving unit; or the receiving structure includes a first through hole and a second through hole, wherein the first through hole is configured to allow the stretching mechanism to extend therein, and the first through hole allows dust generated during stretching of the packaging sheet to fall into the receiving unit; the support plate is configured to facilitate the dust thereon to fall into the receiving unit.

2. The dust collection mechanism according to claim 1, wherein The support plate includes a first connecting plate for being disposed on the feeding end of the frame, a second connecting plate for being disposed on the discharging end of the frame, and a connecting rod connecting the first connecting plate and the second connecting plate, and adjacent connecting rods, first connecting plate and second connecting plate enclose the through groove.

3. The dust collection mechanism according to claim 2, characterized in that, The top of the connecting rod is an edge; or the angle between one end of the connecting rod close to the second connecting plate and the discharging direction in the horizontal plane is greater than 0° and less than 90°; or At least one of the first through hole and the second through hole is provided with a plurality of them, and the first through hole and / or the second through hole are staggered on the support plate.

4. The dust collection mechanism according to claim 3, characterized in that, One side of the support plate close to the discharging end of the three-dimensional packaging sheet unfolding device is inclined downward.

5. The dust collection mechanism according to any one of claims 1 to 4, characterized in that The receiving unit includes at least one of a first drawer and a second drawer.

6. The dust collection mechanism according to claim 5, characterized in that, The first drawer and the second drawer are configured to reciprocate along the stretching direction of the stretching mechanism; The first drawer is fitted on the frame and is configured to be removed from the frame from the feeding end of the three-dimensional packaging sheet unfolding device; The second drawer is fitted on the frame and is configured to be removed from the frame from the discharging end of the three-dimensional packaging sheet unfolding device.

7. The dust collection mechanism according to claim 5, wherein, The second drawer is configured to be magnetically adsorbed on the frame.

8. The dust collection mechanism according to claim 6, wherein, The second drawer is configured to be magnetically adsorbed on the frame.

9. The dust collection mechanism according to claim 7, wherein, Further includes a first guiding plate for guiding dust into the second drawer, the first guiding plate having two pieces and being respectively disposed on both sides of the moving direction of the second drawer, and the first guiding plate is located above the second drawer.

10. The dust collection mechanism according to claim 8, characterized in that, Further includes a first guiding plate for guiding dust into the second drawer, the first guiding plate having two pieces and being respectively disposed on both sides of the moving direction of the second drawer, and the first guiding plate is located above the second drawer.

11. Three-dimensional packaging sheet unfolding device, characterized in that, Comprising: A frame; And a stretching mechanism and a dust collection mechanism disposed on the frame for stretching the packaging sheet; wherein, The dust collection mechanism is the dust collection mechanism described in any one of claims 1 to 10.

12. The three-dimensional packaging sheet unfolding device according to claim 11, characterized in that, The stretching mechanism includes a feeding roller unit, a discharging roller unit both arranged on the frame, and a driving unit for driving the feeding roller unit and the discharging roller unit to move; wherein, The feeding roller unit is arranged at the feeding end of the frame; The discharging roller unit is arranged at the discharging end of the frame; The driving unit is arranged between the feeding roller unit and the discharging roller unit; The frame covers the feeding roller unit and the discharging roller unit therein.

13. The three-dimensional packaging sheet unfolding device according to claim 12, characterized in that, The feeding roller unit is provided with at least one set of roller structures, and one set of roller structures includes two rollers arranged up and down; The discharging roller unit is provided with at least two sets of roller structures arranged side by side, or the discharging roller unit is provided with at least one set of roller structures, and at least one roller in at least one set of roller structures is provided with at least one groove.

14. The three-dimensional packaging sheet unfolding device according to claim 13, wherein, The support plate includes a first connecting plate arranged at the feeding end of the frame, a second connecting plate arranged at the discharging end of the frame, and a connecting rod connecting the first connecting plate and the second connecting plate and located between adjacent roller structures. The adjacent connecting rod, first connecting plate and second connecting plate enclose a accommodating structure for the roller arranged below in the roller structure of the discharging roller unit to pass through.

15. The three-dimensional packaging sheet unfolding device according to claim 14, wherein It further includes a cover body covering the outside of the driving unit.

16. The three-dimensional packaging sheet unfolding device according to claim 15, wherein The accommodating unit includes at least one of a first drawer and a second drawer; The first drawer and the second drawer are arranged to be able to reciprocate along the stretching direction of the stretching mechanism; The first drawer is adapted to the frame and is arranged to be able to move out of the frame from the feeding end of the three-dimensional packaging sheet unfolding device; The second drawer is adapted to the frame and is arranged to be able to move out of the frame from the discharging end of the three-dimensional packaging sheet unfolding device; The first side wall of the second drawer close to the cover body is arranged below the cover body; The third side wall of the first drawer close to the cover body is arranged below the cover body.

17. The three-dimensional packaging sheet unfolding device according to claim 16, wherein The top of the first side wall is inclined towards the side where the feeding end is located.

18. The three-dimensional packaging sheet unfolding device according to claim 16, wherein The lower part of the second side wall of the cover body close to the first drawer is inclined towards the side where the feeding end is located, and / or the top of the second side wall is inclined towards the side where the discharging end is located.

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