Box sealing device

Abstract

The box sealing device comprises a primary box sealing mechanism, the primary box sealing mechanism comprises a mounting plate and a first pressing plate, a first air cylinder is vertically mounted on the mounting plate, and the telescopic end of the first air cylinder is located below the mounting plate; the first pressing plate is vertically connected to the bottom end of the telescopic end and is provided with a side pressing plate and multiple sets of forward pressing plates, the multiple sets of forward pressing plates are located at the bottom of the first pressing plate and are sequentially distributed in the direction perpendicular to the flowing direction of the production line, and each set of forward pressing plate comprises two open type pressing plates; the lower portions of the two open-type pressing plates extend outwards in an arc shape, the upper portions of the two open-type pressing plates gradually tend to be kept in the vertical direction so as to synchronously seal a front small page and a top rear page of the paper box when the first pressing plate presses downwards, and the side pressing plate is perpendicularly connected to the side end of the first pressing plate and is higher than the open-type pressing plates in the height direction. After the open type pressing plate seals the top rear page, the top rear page is sealed at the side end. The box sealing device is simple in structure and convenient to maintain and repair.

Description

Technical Field

[0001] The utility model relates to the technical field of paper box packaging equipment, in particular to a box sealing device. Background Art

[0002] Paper packaging boxes account for a large proportion in the packaging industry and are involved in many fields such as food, medicine, daily chemicals, and liquor.

[0003] At present, automated packaging has become a major trend, which can effectively save human resources and reduce labor intensity. However, automated paper box packaging generally requires relatively cumbersome and complex equipment, which not only occupies a large floor area and has high equipment costs, but also has problems of difficult maintenance and repair in the later stage. Summary of the Utility Model

[0004] An embodiment of the present application provides a box sealing device, which can quickly complete the box sealing operation of a paper box, has a simple overall structure, occupies a small floor area, has low equipment costs, and is convenient for maintenance and repair.

[0005] An embodiment of the present application provides a box sealing device for sealing boxes on a flowing production line, including a primary box sealing mechanism. The primary box sealing mechanism includes a mounting plate and a first pressing plate. A first cylinder is mounted on the mounting plate. The first cylinder vertically penetrates the mounting plate in the height direction, and the telescopic end of the first cylinder is located below the mounting plate.

[0006] The first pressing plate is vertically connected to the bottom end of the telescopic end of the first cylinder in a manner parallel to the mounting plate. The first pressing plate is provided with side pressing plates and multiple groups of forward pressing plates. Among them, multiple groups of the forward pressing plates are located at the bottom of the first pressing plate and are sequentially distributed along the direction perpendicular to the flowing direction of the production line. Each group of the forward pressing plates includes two open-ended pressing plates. The lower parts of the two open-ended pressing plates extend outward in an arc shape, and the upper parts of the two open-ended pressing plates gradually tend to be in the vertical direction to synchronously seal the front small page and the top back page of the paper box when the first pressing plate presses down. The side pressing plates are vertically connected to the side ends of the first pressing plate and are higher than the open-ended pressing plates in the height direction to seal the side ends of the top back page in the later time period when the open-ended pressing plates seal the top back page.

[0007] In one possible implementation, a side limit plate is installed on one side of the mounting plate, and a limit groove extending in a predetermined direction is opened on the inner side wall of the side limit plate, and a cam follower shaft is installed on the top of the first pressure plate, and the cam follower shaft and the first pressure plate remain parallel, and a pre-hook plate is vertically connected to the cam follower shaft on the side close to the upstream of the production line, and an adapter plate is vertically connected to one end of the cam follower shaft, and a cam matching the limit groove is installed on the adapter plate, so that when the cam moves downward along the limit groove, the pre-hook plate will rotate with it, and then pre-hook the front small page before the open pressure plate seals the front small page.

[0008] In one possible implementation, the limit groove includes a first vertical groove, an arcuate groove, and a second vertical groove connected in sequence from top to bottom, wherein the first vertical groove and the second vertical groove extend along the same vertical direction, wherein the arcuate groove protrudes in an arc shape toward the direction close to the pre-hook plate from the first vertical groove and the second vertical groove, and in the axial direction of the cam follower shaft, the pre-hook plate and the open pressure plate are staggered.

[0009] In one possible implementation, the bottom of the side limit plate is connected to a side pre-compression rod, and the side pre-compression rod extends vertically downward by a predetermined length. The first pressure plate is provided with a first avoidance hole suitable for avoiding the side limit plate or the side pre-compression rod. The bottom end of the side pre-compression rod is vertically connected to a first pressure rod to pre-compress the top rear page before the open pressure plate seals the top rear page. The first pressure rod and the cam follower shaft keep extending in the same direction.

[0010] In one possible implementation, the mounting plate is vertically connected to a top pre-compression rod near the middle position of the cam follower shaft, the top pre-compression rod extends vertically downward, and the bottom end of the top pre-compression rod is vertically connected to a second pressure rod, the second pressure rod and the cam follower shaft extend in the same direction, and the first pressure plate is provided with a second avoidance hole for the first pressure head to pass through.

[0011] In one possible implementation, the box sealing device also includes a pressure-holding mechanism, which includes pressure-holding cylinders symmetrically arranged on both sides of the length direction of the cam follower shaft, and the output shafts of the pressure-holding cylinders are located on the inner side and are vertically connected to pressure-holding plates to synchronously maintain pressure on both ends of the paper box after the side pressure plates seal the side ends of the top rear page.

[0012] In a possible implementation, the carton closing device further includes a re-carton closing mechanism located downstream of the initial carton closing mechanism. The re-carton closing mechanism includes a second cylinder and a second pressing plate. The second cylinder vertically penetrates the mounting plate in the height direction, and the telescopic end of the second cylinder is located below the mounting plate. The second pressing plate is vertically connected to the bottom end of the telescopic end of the second cylinder in a manner parallel to the mounting plate, and the second pressing plate extends in a direction perpendicular to the production line flow direction.

[0013] In a possible implementation, second sliding sleeves are symmetrically mounted on both sides of the second cylinder on the mounting plate in a penetrating manner. The second sliding sleeves extend in the vertical direction, and second guiding shafts that are slidably engaged with the second sliding sleeves are vertically mounted on the top of the second pressing plate.

[0014] In a possible implementation, the carton closing device further includes a re-pressure maintaining mechanism. The re-pressure maintaining mechanism includes re-pressure maintaining cylinders symmetrically arranged on both sides in the length direction of the second pressing plate. The output shafts of the re-pressure maintaining cylinders are located inside and are both vertically connected with re-pressure maintaining plates to re-press both ends of the carton when the second pressing plate re-presses the top of the carton.

[0015] Beneficial effects: Compared with the prior art, after the carton arrives in place along with the production line in the carton closing device provided in this application, the first cylinder drives the first pressing plate to press down, and can press down the front small page and the top rear page of the carton through the open-type pressing plate. During the continuous descent of the first pressing plate, the side pressing plate seals the side end of the top rear page, and the carton can be encapsulated and formed at one time. The overall structure is simple, the equipment cost is low, the occupied floor area is small, and it is easy to maintain and repair in the later stage;

[0016] Among them, through the cooperation of the cam and the limiting groove, the front small page can be hooked in advance by the pre-hooking plate when the first pressing plate moves downward, and then the front small page can be sealed in cooperation with the open-type pressing plate, which can avoid the risk of the front small page being bent outward;

[0017] Among them, through the first vertical groove and the arc groove, it can be ensured that the cam follower shaft automatically rotates during the downward movement, so that the pre-hooking plate hooks the front small page in advance. Through the second vertical groove, a certain downward movement space can be provided for the cam, so that the pre-hooking plate can firmly hook the front small page during the further descent of the first pressing plate, and cooperate with the open-type pressing plate to realize multi-point pressing of the front small page, and the carton closing effect is better;

[0018] Among them, through the side pre-pressing rod and the top pre-pressing rod, the side end of the top rear page and the top end of the top rear page can be pre-pressed respectively, so as to facilitate the side pressing plate to cooperate with the open-type pressing plate to close the carton in place at one time;

[0019] Among them, through the re-carton closing mechanism, the re-pressing of the already closed carton product can be carried out, which can further ensure the carton closing quality.

[0020] These and other objects, features, and advantages of the present utility model are fully embodied through the following detailed description. Description of the Drawings

[0021] Figure 1 Shows a bottom view structural schematic diagram of the case sealing device of the present application.

[0022] Figure 2 Shows a partial three-dimensional structural schematic diagram of the case sealing device of the present application.

[0023] Figure 3 Shows a partial three-dimensional structural schematic diagram of the case sealing device of the present application.

[0024] Figure 4 Shows a partial structural schematic diagram of the primary case sealing mechanism in the present application. Detailed Description of the Preferred Embodiments

[0025] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description can be applied to other implementation schemes, variation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not deviate from the spirit and scope of the present utility model.

[0026] Those skilled in the art should understand that in the disclosure of the specification, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on the present utility model.

[0027] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "one" should not be construed as a limitation on the quantity.

[0028] Reference Figures 1 to 4, an embodiment of the present application provides a carton sealing device for sealing cartons on a flow production line, wherein the carton sealing device includes a primary carton sealing mechanism 10. The primary carton sealing mechanism includes a mounting plate 11 and a first pressing plate 12. A first cylinder 111 is mounted on the mounting plate 11. The first cylinder 111 vertically penetrates the mounting plate 11 in the height direction, and the telescopic end of the first cylinder 111 is located below the mounting plate 11. The first pressing plate 12 is vertically connected to the bottom end of the telescopic end of the first cylinder 111 in a manner parallel to the mounting plate 11. A side pressing plate 13 and multiple groups of forward pressing plates 14 are mounted on the first pressing plate 12. Multiple groups of the forward pressing plates 14 are located at the bottom of the first pressing plate 12 and are sequentially distributed in a direction perpendicular to the flow direction of the production line. Each group of the forward pressing plates 14 includes two open-ended pressing plates 141. The lower parts of the two open-ended pressing plates 141 extend in an arc shape towards the opposite outer sides, and the upper parts of the two open-ended pressing plates 141 gradually tend to be in the vertical direction to synchronously seal the front small page and the top rear page of the carton when the first pressing plate 12 presses down. The side pressing plate 13 is vertically connected to the side end of the first pressing plate 12 and is higher than the open-ended pressing plate 141 in the height direction to seal the side end of the top rear page in a later time period when the open-ended pressing plate 141 seals the top rear page.

[0029] In this way, both the open-ended pressing plate 141 and the side pressing plate 13 are mounted on the first pressing plate 12. At the same time, the side pressing plate 13 is also higher than the open-ended pressing plate 141 in the height direction. When the first cylinder 111 drives the first pressing plate 12 to move down, the open-ended pressing plate 141 first contacts the front small page and the top rear page of the carton. As the first pressing plate 12 descends, the open-ended pressing plate 141 gradually seals the front small page and the top rear page of the carton in place. At the same time, when the top rear page is about to be sealed in place, the side pressing plate 13 contacts the side end of the top rear page and presses down together with the open-ended pressing plate 141 (this is called the later time period, that is, the top rear page has been pressed down by a part but not completely pressed down in place), and then finally synchronously seals the front small page, the top rear page, and the side end of the top rear page of the carton in place. The part of the top rear page except the side end is directly pressed down by the first pressing plate 12 to complete the sealing.

[0030] Therefore, the carton sealing device provided by the present application can complete the sealing of the carton at one time, with high working efficiency. At the same time, the overall structure is simple, the floor area occupied is small, the equipment cost is low, and it is easy to maintain and repair in the later stage.

[0031] In one embodiment, a side limiting plate 15 is installed on one side of the mounting plate 11. A limiting groove 101 extending along a predetermined direction is formed in the inner side wall of the side limiting plate 15. At the same time, a cam follower shaft 16 is installed on the top of the first pressing plate 12. The cam follower shaft 16 and the first pressing plate 12 are kept parallel. A pre-hooking plate 161 is vertically connected to the cam follower shaft 16 on the side close to the upstream of the production line. At the same time, one end of the cam follower shaft 16 is vertically connected to a transfer plate 162, and a cam 163 (or a cam mating bearing, where the cam is installed in the bearing and the bearing is located in the limiting groove) matching with the limiting groove 101 is installed on the transfer plate 162. When the cam 163 moves downward along the limiting groove 101, the pre-hooking plate 161 will rotate followingly, so as to pre-hook the front booklet before the open pressing plate 141 seals the front booklet, which can avoid the front booklet being bent to the opposite direction, that is, bent outward, when it remains in a state of being deflected outward and being sealed by the open pressing plate 141, so as to ensure that the box sealing device can complete the packaging smoothly at one time.

[0032] Further preferably, the limiting groove 101 includes a first vertical groove 1011, an arc groove 1012 and a second vertical groove 1013 which are communicated with each other from top to bottom. The first vertical groove 1011 and the second vertical groove 1013 extend along the same vertical direction. The arc groove 1012 protrudes arc-shaped toward the direction close to the pre-hooking plate 161 from the first vertical groove 1011 and the second vertical groove 1013. And in the axial direction of the cam follower shaft 16, the pre-hooking plate 161 and the open pressing plate 141 are distributed in a staggered manner. When the cam 163 moves along the first vertical groove 1011 and the arc groove 1012, the cam follower shaft 16 gradually moves downward, and then rotates synchronously during the downward movement, that is, during the movement in the arc groove 1012, the pre-hooking plate 161 gradually opens outward and then gradually resets, and can pre-hook the front booklet through the pre-hooking plate 161 to avoid the front booklet tilting outward. As the cam 163 further moves downward, when the cam 163 moves into the second vertical groove 1013, the pre-hooking plate 161 remains in the state of hooking the front booklet tightly. By virtue of the characteristic of being distributed in a staggered manner with the open pressing plate 141, the front booklet is sealed at multiple points at the same time, and the box sealing effect is better.

[0033] In one embodiment, a side preloading rod 151 is connected to the bottom of the side limiting plate 15. The side preloading rod 151 extends vertically downward by a predetermined length. At the same time, a first avoidance hole 102 adapted to avoid the side limiting plate 15 or the side preloading rod 151 is formed in the first pressing plate 12. The bottom end of the side preloading rod 151 is vertically connected with a first pressing rod 152 to preload the top rear page before the open pressing plate 141 seals the top rear page. The first pressing rod 152 and the cam follower shaft 16 extend in the same direction. In this way, the phenomenon that the top rear page tilts in the opposite direction can be avoided by preloading the top rear page, so as to ensure that the top rear page is successfully sealed in place at one time.

[0034] Further preferably, a top preloading rod 17 is vertically connected to the middle position of the mounting plate 11 near the cam follower shaft 16. The top preloading rod 17 extends vertically downward. At the same time, the bottom end of the top preloading rod 17 is vertically connected with a second pressing rod 171, and the second pressing rod 171 and the cam follower shaft 16 extend in the same direction. Correspondingly, a second avoidance hole 103 for the second pressing rod 171 to pass through is formed in the first pressing plate 12. Furthermore, the top rear page can be pressed downward synchronously at multiple points through the cooperation of the first pressing rod 151 and the second pressing rod 171, which can improve the stability of preloading the top rear page and avoid the problem of the top rear page skewing during the preloading process at a single end.

[0035] Both the first pressing rod 152 and the second pressing rod 171 can increase the contact area and improve the stability of preloading.

[0036] In one embodiment, the carton sealing device further includes a pressure maintaining mechanism 30. The pressure maintaining mechanism 30 includes pressure maintaining cylinders 31 symmetrically arranged on both sides of the cam follower shaft 16 in the length direction. At the same time, the output shafts of the pressure maintaining cylinders 31 are located inside and are both vertically connected with pressure maintaining plates 32 to synchronously maintain the pressure on both ends of the carton after the side pressing plates 13 seal the side ends of the top rear page, so as to further improve the carton sealing effect at both ends of the carton through pressure maintaining for a certain period of time.

[0037] Further preferably, the carton sealing device further includes a re-sealing mechanism 40. The re-sealing mechanism 40 is located downstream of the primary carton sealing mechanism 10. The re-sealing mechanism 40 includes a second cylinder 41 and a second pressing plate 42. The second cylinder 41 vertically penetrates the mounting plate 11 in the height direction, and the telescopic end of the second cylinder 41 is located below the mounting plate 11. At the same time, the second pressing plate 42 is vertically connected to the bottom end of the telescopic end of the second cylinder 41 in a manner parallel to the mounting plate 11, and the second pressing plate 42 extends in a direction perpendicular to the production line flow direction. Thus, after the primary carton sealing mechanism 10 finishes sealing the carton and after a certain time interval, the top of the carton can be re-pressed by the second pressing plate 42 to form a re-sealed carton, which can further improve the sealing effect of the top of the carton.

[0038] Further preferably, second sliding sleeves 18 are symmetrically installed on both sides of the second cylinder 41 on the mounting plate 11 in a penetrating manner. The second sliding sleeves 18 extend in the vertical direction. At the same time, a second guiding shaft 43 that is slidably engaged with the second sliding sleeve 18 is vertically installed at the top of the second pressing plate 42, so as to ensure the accuracy of the moving direction of the second pressing plate 42.

[0039] In one embodiment, the carton sealing device further includes a re-pressure maintaining mechanism 50. The re-pressure maintaining mechanism 50 includes re-pressure maintaining cylinders 51 symmetrically arranged on both sides in the length direction of the second pressing plate 42. The output shafts of the re-pressure maintaining cylinders 51 are located inside and are both vertically connected with re-pressure maintaining plates 52 to re-press both ends of the carton when the second pressing plate 42 re-presses the top of the carton. Thus, on the basis that the pressure maintaining plate 32 performs pressure maintaining on both ends of the carton, after a certain time interval, the two ends of the carton can be subjected to secondary pressure maintaining treatment by the re-pressure maintaining plates 52. This is mainly because the area of the back page at the top is small at the side end, and sometimes there will be a phenomenon of rebound after bending. Performing secondary pressure maintaining treatment after a certain time interval on the basis of primary pressure maintaining can well handle the above problems, and can ensure that the carton sealing device forms a sealed carton at one time and has a good sealing effect.

[0040] It should be noted that in this application, the terms "first, second" are only used for descriptive purposes, do not represent any order, and cannot be understood as indicating or implying relative importance. These terms can be interpreted as names.

[0041] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and described in the embodiments. Without departing from the above principles, the embodiments of the present invention can have any deformation or modification.

Claims

1. A carton sealing device for sealing cartons on a flow production line, characterized in that, It includes an initial carton sealing mechanism, and the initial carton sealing mechanism includes a mounting plate and a first pressing plate; A first cylinder is installed on the mounting plate. The first cylinder vertically penetrates the mounting plate in the height direction, and the telescopic end of the first cylinder is located below the mounting plate; The first pressing plate is vertically connected to the bottom end of the telescopic end of the first cylinder in a manner parallel to the mounting plate. The first pressing plate is provided with a side pressing plate and multiple groups of forward pressing plates. Among them, multiple groups of the forward pressing plates are located at the bottom of the first pressing plate and are sequentially distributed along the direction perpendicular to the flowing direction of the production line. And each group of the forward pressing plates includes two open-ended pressing plates. The lower parts of the two open-ended pressing plates extend outward in an arc shape, and the upper parts of the two open-ended pressing plates gradually tend to be in the vertical direction to synchronously seal the front small page and the top back page of the carton when the first pressing plate presses down. Among them, the side pressing plate is vertically connected to the side end of the first pressing plate and is higher than the open-ended pressing plate in the height direction to seal the side end of the top back page in the later time period when the open-ended pressing plate seals the top back page.

2. The case-sealing device according to claim 1, wherein A side limiting plate is installed on one side of the mounting plate. A limiting groove extending along a predetermined direction is formed on the inner side wall of the side limiting plate. A cam follower shaft is installed on the top of the first pressing plate. The cam follower shaft is parallel to the first pressing plate. And a pre-hooking plate is vertically connected to the cam follower shaft on the side close to the upstream of the production line. One end of the cam follower shaft is vertically connected to a transfer plate. A cam matching with the limiting groove is installed on the transfer plate, so that when the cam moves downward along the limiting groove, the pre-hooking plate will rotate followingly, and then pre-hook the front small page before the open-ended pressing plate seals the front small page.

3. The cartoning device according to claim 2, wherein, The limiting groove includes a first vertical groove, an arc groove and a second vertical groove which are communicated with each other in sequence from top to bottom. Among them, the first vertical groove and the second vertical groove extend along the same vertical direction. The arc groove protrudes from the first vertical groove and the second vertical groove in an arc shape towards the direction close to the pre-hooking plate. And in the axial direction of the cam follower shaft, the pre-hooking plate and the open-ended pressing plate are misaligned.

4. The cartoning device according to claim 2, characterized in that, The bottom of the side limiting plate is connected with a side pre-pressing rod. The side pre-pressing rod vertically extends downward for a predetermined length. The first pressing plate is provided with a first avoiding hole adapted to avoid the side limiting plate or the side pre-pressing rod. The bottom end of the side pre-pressing rod is vertically connected with a first pressing rod to pre-press the top back page before the open-ended pressing plate seals the top back page. The first pressing rod and the cam follower shaft extend in the same direction.

5. The cartoning device according to claim 4, characterized in that, The mounting plate is vertically connected with a top pre-pressing rod at the middle position close to the cam follower shaft. The top pre-pressing rod vertically extends downward. And the bottom end of the top pre-pressing rod is vertically connected with a second pressing rod. The second pressing rod and the cam follower shaft extend in the same direction. The first pressing plate is provided with a second avoiding hole for the second pressing rod to pass through.

6. The case closing device according to claim 2, characterized in that, It further includes a pressure-holding mechanism, and the pressure-holding mechanism includes pressure-holding cylinders symmetrically arranged on both sides in the length direction of the cam follower shaft. The output shafts of the pressure-holding cylinders are located inside, and pressure-holding plates are vertically connected thereto respectively, so as to perform synchronous pressure-holding on both ends of the paper box after the side pressing plate seals the side ends of the top back page.

7. The box sealing device according to claim 6, wherein, It further includes a box re-sealing mechanism, and the box re-sealing mechanism is located downstream of the initial box-sealing mechanism. The box re-sealing mechanism includes a second cylinder and a second pressing plate. The second cylinder vertically penetrates the mounting plate in the height direction, and the telescopic end of the second cylinder is located below the mounting plate. The second pressing plate is vertically connected to the bottom end of the telescopic end of the second cylinder in a manner parallel to the mounting plate, and the second pressing plate extends in a direction perpendicular to the flowing direction of the production line.

8. The box-sealing device according to claim 7, wherein Second sliding sleeves are symmetrically installed on both sides of the second cylinder on the mounting plate in a penetrating manner. The second sliding sleeves extend in the vertical direction, and second guide shafts slidably matched with the second sliding sleeves are vertically installed on the top of the second pressing plate.

9. The case-sealing device according to claim 7, wherein It further includes a re-pressure-holding mechanism, and the re-pressure-holding mechanism includes re-pressure-holding cylinders symmetrically arranged on both sides in the length direction of the second pressing plate. The output shafts of the re-pressure-holding cylinders are located inside, and re-pressure-holding plates are vertically connected thereto respectively, so as to re-pressure both ends of the paper box when the second pressing plate re-presses the top of the paper box.

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