Gluing device

Abstract

The present invention provides a glue coating device which is convenient for adjusting the glue coating thickness. A disc-shaped glue coating disk is arranged in a box body. The outer end of a rotating shaft connected to the glue coating disk is connected to a power unit. A sliding plate is arranged at the upper end box opening of the box body. A concave notch or a strip hole is arranged on the sliding plate which passes through the upper and lower plate surfaces. The upper rim of the glue coating disk protrudes from the concave notch or the strip hole to above the edge of the concave notch or the strip hole. The hole wall of the concave notch or the strip hole is clearance-matched with the disk surface and the circumferential disk edge of the glue coating disk. The adjusting mechanism drives the sliding plate to slide. The thickness of the colloid attached to the circumferential surface of the rim of the glue coating disk can be adjusted. This provides a guarantee for coating the carton with colloid of appropriate thickness. While ensuring the bonding strength, the waste of colloid can be reduced.

Description

Technical Field

[0001] The invention relates to packaging equipment, in particular to a gluing device for packaging cartons. Background Art

[0002] The process of making cartons usually includes printing, trimming, gluing, folding and gluing. In the gluing process, the thickness and uniformity of the glue are very important. In the prior art, glue wheel gluing, spray gluing and other methods are mostly used. For gluing and gluing equipment, a set of equipment often needs to meet the production requirements of cartons of various specifications, which puts forward new requirements for the coating thickness of the colloid. Summary of the invention

[0003] The purpose of the present invention is to provide a glue coating device which is convenient for adjusting the glue coating thickness.

[0004] A glue coating device, characterized in that: a disc-shaped glue coating disk is arranged in a box chamber of a box body containing colloid, the shaft body of a rotating shaft connected to the glue coating disk passes through the box wall of the box body horizontally and the outer end is connected to a power unit, the rotating shaft and the glue coating disk form a coaxial core connection, a sliding plate is arranged at the upper end box opening of the box body, the sliding plate has a concave notch or a strip hole penetrating the upper and lower plate surfaces, the upper rim of the glue coating disk is exposed and protrudes from the concave notch or the strip hole to above the edge of the concave notch or the strip hole, the hole wall of the concave notch or the strip hole is clearance-matched with the disk surface and the circumferential disk edge of the glue coating disk, an adjustment mechanism is arranged between the sliding plate and the box body to drive and adjust the sliding plate to slide, and the displacement direction of the sliding plate is parallel to the rotating surface of the glue coating disk.

[0005] In the above scheme, the lower disk surface of the glue coating disk is immersed below the colloid liquid level in the box body, and the upper disk surface of the glue coating disk is facing upward and is exposed after passing through the concave notch or strip hole on the sliding plate. As the glue coating disk rotates, the circumferential surface of the upper disk edge is always attached to the colloid. When the part of the carton to be bonded passes in contact with the gluing part of the disk edge, the gluing operation is successfully completed. Since the adjustment mechanism adjusts and drives the sliding plate to move relative to the box body, the distance between the concave notch or strip hole on the sliding plate and the rim of the glue coating disk can be adjusted, so the thickness of the colloid attached to the circumferential surface of the rim of the glue coating disk can be adjusted, which provides a guarantee for coating the carton with colloid of appropriate thickness. It can be seen that the waste of colloid can be reduced while ensuring the bonding strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0007] Figure 2 is an exploded view of the present invention;

[0008] Figure 3 yes Figure 2 A partial enlarged view of the

[0009] Figure 4 , 5 6 is a three-dimensional diagram of a sliding plate;

[0010] Figure 7 It is a schematic diagram of the cooperation state between the sliding plate and the glue coating disc;

[0011] Figure 8 yes Figure 7 AA section view in. DETAILED DESCRIPTION

[0012] like Figure 1 The glue coating device shown in the figure comprises a box body 10, and a disc-shaped glue coating disk 20 is arranged in the box chamber of the box body 10 containing the colloid, and the shaft body of the rotating shaft 21 connected to the glue coating disk 20 passes through the box wall of the box body 10 horizontally and is connected to the outer end of the power unit. The power unit here can be a motor, and the rotating shaft 21 and the glue coating disk 20 form a coaxial core connection, and a sliding plate 30 is arranged at the upper end of the box mouth of the box body 10. There is a concave notch or a strip hole 31 on the sliding plate 30 that passes through the upper and lower plate surfaces, and the upper rim of the glue coating disk 20 is exposed and protrudes from the concave notch or the strip hole 31 to the top of the edge of the concave notch or the strip hole 31, and the hole wall of the concave notch or the strip hole 31 is clearance-matched with the disk surface and the circumferential disk edge of the glue coating disk 20, and an adjustment mechanism is arranged between the sliding plate 30 and the box body 10 to drive and adjust the sliding plate 30 to slide, and the displacement direction of the sliding plate 30 is parallel to the rotating surface of the glue coating disk 20.

[0013] Since the displacement adjustment direction of the sliding plate 30 is parallel to the rotating surface of the glue coating disk 20, the distance between the end hole wall of the concave notch or the strip hole 31 and the circumferential disk edge surface of the glue coating disk 20 can be adjusted, that is, the thickness of the colloid attached to the circumferential surface of the disk edge can be adjusted and controlled, so it is possible to implement a thickness-controlled gluing operation on the blank plate to be bonded of the carton.

[0014] As a preferred embodiment, the sliding plate 30 is in the shape of a rod plate with a rectangular cross-section, and a strip hole 31 is opened on the sliding plate 30 in an upward and downward through manner. The end of the sliding plate 30 located outside the box body 10 is provided with a vertical plate 32 extending downward, and a notch or hole 321 is provided on the vertical plate 32 to be clamped or penetrated on the adjusting screw 40 constituting the adjusting mechanism. The adjusting screw 40 and the nut provided on the box body 10 form a threaded fit, and the middle section of the adjusting screw 40 has two limit portions 41 arranged at intervals, and the vertical plate 32 is located between the two limit portions 41, and the rod end of the adjusting screw 40 away from the box body 10 is provided with a rotating handle 42.

[0015] In the above scheme, when the adjusting screw 40 rotates relative to the box body 10, the two limit parts 41 will be displaced in the axial direction, and the vertical plate 32 located therebetween will naturally be displaced synchronously, that is, the sliding plate 30 will be displaced synchronously, thereby realizing the change and adjustment of the spacing between the end hole wall of the strip hole 31 and the circumferential disk edge surface of the glue coating disk 20.

[0016] In order to visually observe the specific adjustment amount, a digital display 43 is connected to the adjustment mechanism. As a preferred solution, a digital display 43 is connected to the rotating handle 42. During normal operation, the zero indication position of the digital display 43 can be first set to correspond to the state where the spacing between the hole wall at one end of the strip hole 31 and the circumferential disk edge surface of the glue coating disk 20 is zero, so that the digital display can directly display the spacing between the hole wall of the strip hole 31 and the circumferential disk edge surface of the glue coating disk 20, that is, the colloid thickness on the glue coating disk 20. It is very important to set the digital display 43 to directly display the glue coating thickness. The operator cannot accurately control the glue coating thickness by adjusting the glue coating based on experience, and it consumes energy and time. In addition, the location of the glue coating device is attached to the cardboard conveying line. Being too close to the line already has safety hazards. Moreover, since the focus of attention is on the adjustment operation, the occurrence of production safety accidents is difficult to avoid. The digital display adjustment glue coating device provided by the present invention can provide a safe, fast and accurate glue coating thickness adjustment operation.

[0017] In order to ensure that the state of adjusting to the appropriate glue coating thickness is maintained, it is necessary to maintain the position of the sliding plate 30 stable, therefore, a spring 44 is sleeved on the rod of the adjusting screw 40 between the limiting portion 41 on the inner side of the adjusting screw 40 and the outer box wall of the box body 10. The elastic force of the spring 44 ensures that there is no looseness between the adjusting screw 40 and the matching nut (not shown in the figure) of the box body 10 and the pre-tightened state is always maintained, that is, the vibration generated by the working of each moving part cannot cause the accidental relative rotation between the adjusting screw 40 and the matching nut on the box body 10.

[0018] A limit stopper 11 is provided on the outer wall of the box body 10, and the limit stopper 11 is located on the moving path of the sliding plate 30 or the vertical plate 32 on the sliding plate 30. The limit stopper 11 should at least ensure that there is a small gap between the glue coating disc 20 and the end hole wall of the strip hole 31 when the sliding plate 30 is displaced, so as to avoid contact between the two. Because the glue coating disc 20 is adjusted during the rotation process, once the circumference of the disc edge of the glue coating disc 20 contacts the end hole wall of the strip hole 31, serious high-speed friction will occur. Specifically, when the adjusting screw 40 rotates, the sliding plate 30 is driven to move, and when the protrusion 322 on the vertical plate 32 moves within the area defined by the two limit stops 11 arranged at intervals and contacts the limit stops 11, the two form a resistance match, and the vertical plate 32 and the movable sliding plate 30 cannot continue to move, that is, at this time, the glue coating disc 20 and the strip hole 31 are in an extreme position match state, and the gap between the two cannot be adjusted to a smaller gap direction, and can only be adjusted in the opposite direction.

[0019] In order to ensure that the position of the sliding plate 30 is determined and its posture is maintained even when it moves, a specific implementation scheme is that a concave notch 12 is provided on the upper side of the box wall on the opposite side of the box body 10, and the sliding plate 30 is located in the concave notch 12 and moves along the direction defined by the concave notch 12. The above scheme actually provides a guide limit for the movement of the sliding plate 30.

[0020] Furthermore, the thickness of the sliding plate 30 matches the depth of the concave notch 12 , and a box cover 13 is provided on the upper plate surface of the sliding plate 30 and the upper edge of the box body 10 , and a strip hole 131 is provided on the box cover 13 corresponding to the position and size of the strip hole 31 .

[0021] The box cover 13 can ensure the stability of the position and posture of the sliding plate 30 during adjustment and normal working, and can also cover the high-speed rotating parts and colloid. Other parts or mechanisms such as rolling wheels can also be additionally provided, which will be explained in detail in the subsequent content.

[0022] During normal operation, the lower part of the rubber coating disc 20 is partially immersed in the colloid liquid level, and the rubber-immersed surface area of ​​the rubber coating disc 20 below the liquid level is an arc-shaped area, thereby ensuring that the rim of the rubber coating disc 20 is still adhered to the colloid as the colloid is consumed and the liquid level is lowered. The colloid is present on the rim of the rubber coating disc 20 and the edge area adjacent to the rim. In fact, the colloid in the edge area near the rim above the liquid level is attached in an annular shape. When the rubber coating disc 20 rotates, the centrifugal effect will inevitably cause the colloid in the annular area to centrifugally gather at the rim, so the matching clearance between the rubber coating disc 20 and the strip hole 31 is a small clearance match, that is, the clearance is as small as possible and it is ensured that the two will not contact.

[0023] The present invention provides the following preferred solution, which completely solves the problem of the colloid on the disk side gathering toward the disk edge and causing the change in the glue coating thickness, that is, the strip hole 31 is a hole shape with a peripheral contour of a rectangle, and the hole wall section at one end of the long hole wall facing the disk surface of the glue coating disk 20 is an inclined hole wall 311, and the spacing between the inclined hole walls 311 on the opposite sides increases from small to large from bottom to top, and the spacing between the lower end hole edges of the opposite long hole wall sections 312 is greater than the spacing between the lower end hole edges of the inclined hole walls 311 on the opposite sides.

[0024] It can be seen that as the glue coating disk 20 rotates, the colloid on the disk surface near the disk edge is basically removed by non-contact scraping of the lower end hole edge of the opposite side inclined hole wall 311, and the colloid on the peripheral surface of the disk edge of the glue coating disk 20 maintains a basically stable thickness.

[0025] It should be noted that, in the above preferred scheme, an inclined hole wall 311 is set at one end of the strip hole 31, so that the small gap cooperation between the inclined hole wall 311 and the glue coating disk 20 in a small range can be achieved while reducing the difficulty of processing. This is significantly lower than the difficulty of processing the small gap cooperation between the strip hole 31 and the overall peripheral area of ​​the glue coating disk 20. In addition, in the cooperation area other than the small gap cooperation between the inclined hole wall 311 and the glue coating disk 20 in a small range, the regional spacing between the strip hole 31 and the glue coating disk 20 is relatively large, so that the residual colloid on the glue coating disk 20 can be returned to the box body 10 without being blocked and gathered on the upper part of the strip hole 31.

[0026] The above focuses on the scheme in which the glue coating disc 20 is attached with a colloid of a specific thickness. In order to ensure that the colloid of the glue coating disc 20 is stably and reliably transferred to the carton blank, the present invention also discloses the following preferred scheme to maintain the operation and posture of the carton blank, which is described in detail below.

[0027] The box cover 13 is provided with a rolling wheel 50, the rotating axis of the rolling wheel 50 is arranged parallel to the rotating axis of the glue coating disk 20, and the projections of the rolling wheel 50 and the disk body of the glue coating disk 20 arranged up and down in the horizontal plane are arranged in an intersecting and overlapping manner.

[0028] There is a cardboard guide clamp 60 on the upstream side of the rolling wheel 50 and the glue coating plate 20. The cardboard guide clamp 60 is composed of upper and lower clamping plates 61, 62 with parallel and spaced apart surfaces and arranged adjacent to each other. The upper and lower clamping plates 61, 62 are strip-shaped and their upstream ends form an eight-shaped shape to facilitate the introduction of cardboard.

[0029] A bracket is provided on the box cover 13, and the bracket includes a vertically arranged column 53. The middle part of the crossbeam 52 is connected to the upper end of the column 53, one end of the crossbeam 52 is connected to the upper end of the crank 51 by a hinge shaft, and the lower end of the crank 52 is connected to the rolling wheel 50 by a hinge shaft. The other end of the crossbeam 52 is fixedly connected to one end of the cantilever rod 54, and the suspended end of the cantilever rod 54 is connected to the upper and lower clamping plates 61, and the lower clamping plate 62 is connected to the box cover 13. The swinging surface of the crank 51 is parallel to the rotating surface of the glue coating disk 20.

[0030] The arrangement of the upper and lower clamps 61, 62 in the above scheme reliably guides the cardboard to the downstream location of the glue coating disk 20, and the rolling wheel 50 is arranged in a swinging form to ensure that it rolls on the cardboard with appropriate force, so that the cardboard and the peripheral surface of the disk edge of the glue coating disk 20 are in moderate and stable contact.

Claims

1. A glue coating device, Features: A disc-shaped glue coating disc (20) is disposed in a box chamber of a box body (10) containing a colloid. The shaft body of a rotating shaft (21) connected to the glue coating disc (20) passes through the box wall of the box body (10) in a horizontal direction and the outer end is connected to the power unit. The rotating shaft (21) and the glue coating disc (20) are connected to each other through a coaxial core. A sliding plate (30) is disposed at the upper end of the box body (10). The sliding plate (30) has a concave notch or a strip hole (31) that passes through the upper and lower plate surfaces. The glue coating disc The upper rim of the (20) protrudes from the concave notch or strip hole (31) to the upper edge of the concave notch or strip hole (31), the hole wall of the concave notch or strip hole (31) and the disk surface and circumferential disk edge of the glue coating disk (20) are clearance-matched, and an adjustment mechanism is provided between the sliding plate (30) and the box body (10) to drive and adjust the sliding plate (30) to slide, and the displacement direction of the sliding plate (30) is parallel to the rotation surface of the glue coating disk (20); The sliding plate (30) is in the shape of a rod plate with a rectangular cross section. A strip-shaped hole (31) is formed on the sliding plate (30) in a vertical through-type manner. The end of the sliding plate (30) located outside the box (10) is provided with a vertical plate (32) extending downward. The vertical plate (32) is provided with a notch or a hole (321) which is clamped or penetrated on an adjusting screw (40) constituting the adjusting mechanism. The adjusting screw (40) and a nut provided on the box (10) form a threaded fit. The middle section of the adjusting screw (40) is provided with two spaced-apart limiting portions (41). The vertical plate (32) is located between the two limiting portions (41). The rod end of the adjusting screw (40) away from the box (10) is provided with a rotating handle (42). A digital display (43) is connected to the rotating handle (42); A spring (44) is sleeved on the rod of the adjusting screw rod (40) between the inner limiting portion (41) and the outer box wall of the box body (10); A limit stopper (11) is provided on the outer wall of the box body (10), and the limit stopper (11) is located on the moving path of the sliding plate (30) or the vertical plate (32) connected to the sliding plate (30); A concave notch (12) is provided on the upper side of the box wall on the opposite side of the box body (10), and the sliding plate (30) is located in the concave notch (12) and moves along the direction defined by the concave notch (12); The thickness of the sliding plate (30) matches the depth of the concave notch (12); the upper plate surface of the sliding plate (30) and the upper edge of the box body (10) are covered with a box cover plate (13); and the box cover plate (13) has a strip hole (131) corresponding to the position and size of the strip hole (31); The strip-shaped hole (31) is a hole-shaped hole with a peripheral contour of a rectangle, the hole wall section at one end of the long hole wall facing the disk surface of the glue coating disk (20) is an inclined hole wall (311), the spacing between the inclined hole walls (311) on opposite sides increases from small to large from bottom to top, and the spacing between the lower end hole edges of the opposite long hole wall sections (312) is greater than the spacing between the lower end hole edges of the inclined hole walls (311) on opposite sides.

2. The glue coating device according to claim 1, Features: The box cover plate (13) is provided with a rolling wheel (50), the rotary axis of the rolling wheel (50) is arranged parallel to the rotary axis of the glue coating disk (20), and the projections of the wheel body of the rolling wheel (50) and the disk body of the glue coating disk (20) arranged up and down in a horizontal plane are arranged in an intersecting and overlapping manner.

3. The glue coating device according to claim 1, Features: A paperboard guide clamp (60) is provided on the upstream side of the rolling wheel (50) and the gluing disk (20). The paperboard guide clamp (60) is composed of upper and lower clamping plates (61, 62) whose plate surfaces are parallel to each other and spaced apart and arranged adjacent to each other. The upper and lower clamping plates (61, 62) are strip-shaped and their upstream ends are formed into an eight-shaped shape for easy paperboard introduction.

4. The glue coating device according to claim 3, Features: The box cover plate (13) is provided with a bracket, which includes a vertically arranged column (53), the middle part of the cross beam (52) is connected to the upper end of the column (53), one end of the cross beam (52) is connected to the upper end of the crank (51) by a hinge shaft, the lower end of the crank (51) is connected to the rolling wheel (50) by a hinge shaft, the other end of the cross beam (52) is fixedly connected to one end of the cantilever rod (54), the suspended end of the cantilever rod (54) is connected to the upper clamping plate (61), the lower clamping plate (62) is connected to the box cover plate (13), and the swing surface of the crank (51) is parallel to the rotation surface of the glue coating disk (20).

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