Packaging box glue spraying device

Abstract

A packaging box glue spraying device comprises a glue spraying table top (1), a cantilever (2), a glue spraying head (3) and a bonding pressing roller (4), the cantilever (2) is installed above the glue spraying table top (1), the glue spraying head (3) is movably installed on the cantilever (2) through an electric sliding table (5), and the bonding pressing roller (4) is installed at the front end of the cantilever (2). And a paperboard positioning assembly (7) corresponding to the glue spraying head (3) and a paperboard conveying belt (8) corresponding to the bonding pressing roller (4) are respectively arranged on the glue spraying table board (1). The paperboard gluing device has the advantages that a paperboard is rapidly positioned through the paperboard positioning assembly, the glue spraying head moves front and back to spray glue to the bonding portion of the paperboard, the limiting cover can tilt according to the shape of the bonding portion at the two ends, the gluing range is limited, gluing is even, and the glue overflowing phenomenon is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging box production, and particularly relates to a glue spraying device for a packaging box. Background Art

[0002] After the packaging box is printed and indented, it is necessary to bond and fix both ends to form an enclosed box body, and then fold and assemble the paper box to form. Most of the existing glue application processes before bonding are manual operations. The operation method is to stagger multiple cardboard sheets in turn to expose the glue application part, and then apply glue together with a glue brush. This requires a high degree of proficiency for the staff. At the same time, since most of the bonding parts of the paper box are trapezoidal structures, uneven glue application or glue overflow on the side will occur during glue brushing, resulting in the front and back sides of the box body sticking together or the upper and lower two box bodies sticking together after bonding and stacking, affecting the quality and efficiency of the subsequent paper box forming. Content of the Utility Model

[0003] The purpose of the utility model is to provide a glue spraying device for a packaging box aiming at the above deficiencies.

[0004] The utility model includes a glue spraying table, a cantilever, a glue spraying head and a bonding pressing roller. The cantilever is installed above the glue spraying table. The glue spraying head is movably installed on the cantilever through an electric slide table. The bonding pressing roller is installed at the front end of the cantilever. The glue spraying table is respectively provided with a cardboard positioning assembly corresponding to the glue spraying head and a cardboard conveying belt corresponding to the bonding pressing roller.

[0005] One end of the cantilever is hinged to the glue spraying table through a pin shaft and is parallel to the glue spraying table.

[0006] The cardboard positioning assembly includes a cardboard front-end positioning plate and a cardboard side positioning plate which are vertically distributed. A glue spraying pipe is provided on the slide block of the electric slide table. The glue spraying head is installed at the bottom end of the glue spraying pipe. A limiting cover is rotatably connected to the glue spraying pipe. The glue spraying head is located inside the limiting cover. Limiting cover guide plates are respectively provided at both ends of the cardboard front-end positioning plate.

[0007] A reset reed for controlling the angle of the limiting cover is provided on the glue spraying pipe. The bottom opening of the limiting cover is rectangular, and the two width directions of the rectangular opening part are both arc-shaped structures coaxial with the glue spraying head.

[0008] A gap is provided between the limiting cover and the cardboard front-end positioning plate.

[0009] A limiting cover guide plate installation groove is provided on the cardboard front-end positioning plate. The limiting cover guide plate is adjustably installed in the limiting cover guide plate installation groove and fixed by a screw.

[0010] The bonding pressing roller is movably installed at the front end of the cantilever through a connecting column, and a tightening spring is provided on the connecting column.

[0011] The advantages of the present utility model are as follows: The cardboard is quickly positioned through the cardboard positioning assembly. The glue spraying head moves back and forth to spray glue on the bonding part of the cardboard. The limiting cover can tilt in both ends according to the shape of the bonding part to limit the glue application range, ensure uniform glue application, and effectively reduce the phenomenon of glue overflow. Description of the Drawings

[0012] Figure 1 is a schematic structural view of the present utility model.

[0013] Figure 2 is a schematic structural view of the cardboard positioning assembly.

[0014] Figure 3 is Figure 1 a schematic view of a partially enlarged structure.

[0015] Figure 4 is a schematic view of the glue application process of the limiting cover.

[0016] Figure 5 is a schematic view of the installation structure of the glue spraying head.

[0017] Figure 6 is a schematic view of the installation structure of the bonding pressure roller. Detailed Description of the Preferred Embodiment

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Components of the embodiments of the present utility model generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but is merely representative of selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0020] In the description of the embodiments of the present utility model, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use, 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, and therefore cannot be construed as a limitation to the present utility model. In addition, in the description of the present utility model, if terms such as "first", "second", etc. are only used for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0021] In the description of the embodiments of the present utility model, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set" and "connect" are understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] As shown in the drawings, the present utility model includes a glue spraying table 1, a cantilever 2, a glue spraying head 3, and a bonding pressure roller 4. The cantilever 2 is installed above the glue spraying table 1, the glue spraying head 3 is movably installed on the cantilever 2 through an electric slide table 5, the bonding pressure roller 4 is installed at the front end of the cantilever 2, and a cardboard positioning assembly 7 corresponding to the glue spraying head 3 and a cardboard conveying belt 8 corresponding to the bonding pressure roller 4 are respectively provided on the glue spraying table 1.

[0023] The cardboard is laid flat on the glue spraying table 1 and positioned by the cardboard positioning assembly 7. The part to be coated with glue is located below the glue spraying head 3. The electric slide table 5 is started to drive the glue spraying head 3 to move back and forth to spray glue on the coated part. After completion, the cardboard is moved out from below the glue spraying head 3. The staff bonds the two ends of the cardboard, and then moves the bonded part to the bonding pressure roller 4. During the process that the cardboard conveying belt 8 drives the cardboard to move forward, the bonding pressure roller 4 rolls and presses the bonded part of the cardboard to make it bond tightly.

[0024] Further, one end of the cantilever 2 is hinged to the glue spraying table 1 through a pin shaft and is parallel to the glue spraying table 1.

[0025] The cantilever 2 is of an L-shaped structure. The vertical part is hinged to the glue spraying table 1, and the horizontal part is kept parallel to the glue spraying table 1. A fixing plate 20 is provided on the glue spraying table 1, and mating positioning holes are opened on both the fixing plate 20 and the vertical part of the cantilever 2. The cantilever 2 and the fixing plate 20 are connected and fixed through a positioning pin.

[0026] Preferably, the cardboard positioning assembly 7 includes a cardboard front-end positioning plate 10 and a cardboard side positioning plate 11 that are vertically distributed. A glue spraying pipe 13 is provided on the slider of the electric sliding table 5, and the glue spraying head 3 is installed at the bottom end of the glue spraying pipe 13. The glue spraying pipe 13 is rotatably connected with a limit cover 15, and the glue spraying head 3 is located inside the limit cover 15. Both ends of the cardboard front-end positioning plate 10 are respectively provided with limit cover guiding plates 12.

[0027] When positioning the cardboard, align the part to be glued with the cardboard front-end positioning plate 10, and align the adjacent side with the cardboard side positioning plate 11. By default, the glue spraying head 3 is located on one side of the cardboard end to be glued. The glued part of the cardboard is trapezoidal. One end of the limit cover 15 will tilt at a certain angle under the resistance of the limit cover guiding plate 12, making it parallel to the hypotenuse of the trapezoidal structure. When the glue spraying head 3 sprays glue, the glue will not be sprayed outside the glued part. When the glue spraying head 3 moves to the other side, similarly, under the blocking and resistance of the limit cover guiding plate 12 on the other side, the limit cover 15 tilts at a certain angle in the reverse direction to keep parallel to the other inclined surface of the trapezoidal structure.

[0028] Further, a reset reed 16 for controlling the angle of the limit cover 15 is provided on the glue spraying pipe 13. The bottom opening of the limit cover 15 is rectangular, and both width directions of the rectangular opening part are arc-shaped structures coaxial with the glue spraying head 3.

[0029] The reset reed 16 is a U-shaped structure with an opening downward. The two ends of the reset reed 16 are symmetrically attached to the same side of the limit cover 15. In the initial state, the limit cover 15 remains parallel to the cardboard side positioning plate 11. When blocked by the limit cover guiding plate 12, it tilts. At this time, one end of the reset reed 16 will bend under force. When the limit cover 15 leaves the position of the limit cover guiding plate 12, the bent end of the reset reed 16 resets and at the same time toggles the limit cover 15 to the initial position.

[0030] Further, there is a gap between the limit cover 15 and the cardboard front-end positioning plate 10, and there is also a gap between the limit cover 15 and the edge of the glued part of the cardboard when the limit cover 15 tilts at both ends of the cardboard.

[0031] That is, when spraying glue, there is a certain gap between the glue spraying range and the edge of the cardboard. The width of the gap in this case is 0.5 - 1 mm to prevent the glue from being squeezed out from the edge of the bonding part during bonding.

[0032] Further, a limit cover guiding plate installation groove is provided on the cardboard front-end positioning plate 10. The limit cover guiding plate 12 can be adjustably installed in the limit cover guiding plate installation groove and fixed by a screw.

[0033] The screw rod is located at the rear side of the positioning plate 10 at the front end of the cardboard. The distance between the two limiting cover guide plates 12 can be adjusted according to the width of the glue-applied part of the cardboard. After the adjustment is completed, it is fastened by the screw rod. On the electric sliding table 5, a pair of photoelectric switches are used to control its stroke.

[0034] Further, the bonding pressure roller 4 is movably installed at the front end of the cantilever 2 through a connecting column, and a tension spring is provided on the connecting column.

[0035] That is, a guide sleeve is provided on the support seat of the bonding pressure roller 4. One end of the connecting column is installed on the cantilever 2, and the other end of the connecting column is movably inserted into the guide sleeve. The tension spring is sleeved on the connecting column and is tightened on the support seat, so that the bonding pressure roller 4 can have a space for vertical displacement. A guide protrusion is provided on the side of the connecting column, and a vertical guide groove matching the guide protrusion is provided in the guide sleeve, which can prevent the guide sleeve and the connecting column from rotating relative to each other to keep the direction of the bonding pressure roller 4. The bonding pressure roller 4 can move up and down, and the tension spring makes the bonding pressure roller 4 keep closely attached to the cardboard conveying belt 8.

Claims

1. A carton spraying glue device, characterized in that It includes a glue spraying tabletop (1), a cantilever (2), a glue spraying head (3) and a bonding pressure roller (4). The cantilever (2) is installed above the glue spraying tabletop (1). The glue spraying head (3) is movably installed on the cantilever (2) through an electric slide table (5). The bonding pressure roller (4) is installed at the front end of the cantilever (2). A cardboard positioning assembly (7) corresponding to the glue spraying head (3) and a cardboard conveying belt (8) corresponding to the bonding pressure roller (4) are respectively arranged on the glue spraying tabletop (1).

2. The glue spraying device for a packaging box according to claim 1, wherein One end of the cantilever (2) is hinged to the glue spraying tabletop (1) through a pin shaft and is parallel to the glue spraying tabletop (1).

3. The glue spraying device for a packaging box according to claim 1, wherein The cardboard positioning assembly (7) includes a cardboard front-end positioning plate (10) and a cardboard side positioning plate (11) which are vertically distributed. A glue spraying pipe (13) is arranged on the slider of the electric slide table (5). The glue spraying head (3) is installed at the bottom end of the glue spraying pipe (13). A limit cover (15) is rotatably connected to the glue spraying pipe (13). The glue spraying head (3) is located inside the limit cover (15). Limit cover guide plates (12) are respectively arranged at both ends of the cardboard front-end positioning plate (10).

4. The glue spraying device for a packaging box according to claim 3, wherein A reset reed (16) for controlling the angle of the limit cover (15) is arranged on the glue spraying pipe (13). The bottom opening of the limit cover (15) is rectangular, and the two width directions of the rectangular opening part are both arc-shaped structures coaxial with the glue spraying head (3).

5. The glue spraying device for a packaging box according to claim 4, characterized in that There is a gap between the limit cover (15) and the cardboard front-end positioning plate (10).

6. The glue spraying device for a packaging box according to claim 3, characterized in that A limit cover guide plate installation groove is arranged on the cardboard front-end positioning plate (10). The limit cover guide plate (12) is adjustably installed on the limit cover guide plate installation groove and is fixed by a screw.

7. A glue spraying device for a packaging box according to claim 1, characterized in that The bonding pressure roller (4) is movably installed at the front end of the cantilever (2) through a connecting column, and a tightening spring is arranged on the connecting column.

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