A feeding device for a glazing machine

Abstract

The present application relates to the field of cardboard feeding and transmission, and in particular to a feeding device for a glazing machine, comprising a feeding table for placing stacked cardboards, a material transfer nozzle for adsorbing the cardboards, a nozzle moving mechanism for driving the material transfer nozzle to move in a vertical plane, and a conveyor for receiving the cardboards adsorbed by the material transfer nozzle and conveying them to a coating device of the glazing machine for glazing treatment. The feeding table is detachably connected to two side suction strips, and there is a middle suction strip around the conveyor that can form a negative pressure close to one side of the cardboard. The projections of the air inlets of the two side suction strips on the middle suction strip and the air inlet of the middle suction strip both have overlapping areas, so that the printing ink on the cardboard is not easy to fall off during the process of comprehensively cleaning the surface of the cardboard.

Description

Technical Field

[0001] The present application relates to the field of cardboard feeding and transmission, and in particular to a feeding device of a glazing machine. Background Art

[0002] Some cartons with higher quality requirements will be glazed after printing to improve the surface appearance and durability. In order to meet the occasional glazing needs, offline glazing equipment is often used, that is, the glazing equipment and printing equipment are independent, and the printed cardboard will be transferred to the glazing equipment for transmission and coating with glazing oil.

[0003] For example, in a paper feeding device on a glazing machine with announcement number CN221190813U, a paper feeding suction cup absorbs the cardboard to be glazed and moves it to the conveyor belt, while a cleaning suction cup removes dust from the surface of the cardboard. The cardboard will also pass through a cleaning roller when moving forward on the conveyor belt.

[0004] With respect to the above-mentioned related technologies, the cleaning roller will conduct a comprehensive contact cleaning of the entire printed surface of the cardboard. Although the cardboard to be glazed has just been printed and has undergone corresponding drying treatment, the ink on the printed surface of the cardboard is still prone to partial falling off due to the cleaning effect of the large external force of the cleaning roller. Summary of the invention

[0005] In order to fully and comprehensively clean the surface of the cardboard and reduce the possibility of ink falling off the printed surface of the cardboard, the present application provides a feeding device for a glazing machine.

[0006] The present application provides a feeding device for a glazing machine that adopts the following technical solution.

[0007] A feeding device of a glazing machine comprises a feeding table for placing stacked cardboards, a material transfer suction nozzle for sucking the cardboards, a suction nozzle moving mechanism for driving the material transfer suction nozzle to move in a vertical plane, and a conveyor for receiving the cardboards sucked by the material transfer suction nozzle and conveying them to a coating device of the glazing machine for glazing treatment. The feeding table is detachably connected to two side suction strips corresponding to opposite sides of the cardboards and capable of forming negative pressure, a middle suction strip close to one side of the cardboards and capable of forming negative pressure exists around the conveyor, and the projections of the air inlets of the two side suction strips on the middle suction strip and the air inlet of the middle suction strip both have overlapping areas.

[0008] By adopting the above technical solution, the cardboard is sucked and moved from the unloading table and will first pass through the side suction strips, so that the dust and impurities on the surfaces of the opposite sides of the cardboard are removed. Then the cardboard is transferred to the conveyor and moves forward. During the forward movement, it will pass through the middle suction strip, and the suction area of ​​the middle suction strip overlaps with the suction areas of the two side suction strips, so that the cardboard can obtain a more comprehensive surface cleaning, and it is not easy to apply excessive pressure to the ink on the printed surface of the cardboard, and it is not easy for some ink to fall off before glazing, which is helpful to improve the final surface quality of the cardboard.

[0009] Optionally, frame belts capable of circulating along the conveying direction of the conveyor are provided on the frames on both sides of the conveyor, the conveying speed of the frame belts is consistent with the conveying speed of the conveyor, the frame belts are detachably connected with a plurality of base blocks, the base blocks are slidably connected with pressing pieces capable of approaching the side edges of the cardboard, and the base blocks and the conveyor are provided with a pressing mechanism forcing the pressing pieces to move toward the cardboard.

[0010] By adopting the above technical solution, when the adsorption force of the middle suction strip is larger and the strip is closer to the cardboard, the cardboard is not easily directly adsorbed by the middle suction strip and cannot move forward with the conveyor belt of the conveyor. While improving the cleaning degree of the middle suction strip on the surface of the cardboard, it will not affect the normal forward movement of the cardboard, and the frame belt moves forward synchronously with the conveyor at the same speed to reduce the wear of the pressing piece on the surface of the cardboard to be polished.

[0011] Optionally, the pressing mechanism includes a return spring arranged between the base block and the pressing piece to force the pressing piece away from the conveyor, a frame rod connected to the side frame of the conveyor and capable of abutting against the pressing piece, and the contact ends of the frame rod and the pressing piece are both inclined so that the pressing piece can move toward the cardboard when it moves to the frame rod.

[0012] By adopting the above technical solution, when the cardboard moves to a predetermined position close to the middle suction bar, the pressing piece will contact the frame rod and move toward the cardboard, thereby reducing the possibility of the cardboard being sucked away from the conveyor belt of the conveyor when passing the middle suction bar.

[0013] Optionally, the frame rod is slidably connected to the side frame of the conveyor along the moving direction of the pressure piece, and the side frame of the conveyor is provided with an adjusting cylinder that can move the frame rod.

[0014] By adopting the above technical solution, when the thickness specification of the cardboard changes to a certain extent, the height of the frame rod is adjusted accordingly, so that the pressing piece can always fit the surface of the cardboard with appropriate pressure.

[0015] Optionally, the middle suction strip is detachably connected to the frame rod.

[0016] By adopting the above technical solution, the middle suction strip can move synchronously with the movement of the frame rod, so that the distance between the middle suction strip and the paperboard is always maintained at an appropriate value.

[0017] Optionally, brush belts capable of contacting the surface of the pressing piece close to the cardboard are provided on both sides of the conveyor at the positions opposite to each other, and the brush belts are located at one end of the frame belt close to the unloading platform.

[0018] By adopting the above technical solution, when the pressing piece moves to the side away from the conveyor belt, the pressing piece will pass through the brush belt, so that the pressing piece can abut against the surface of the cardboard and possible dust and debris on the cardboard will be cleaned and removed. When the pressing piece moves to the surface facing the conveyor belt and abuts against the cardboard, the pressing piece is not likely to press dust and debris tightly against the cardboard, so that when the cardboard is subsequently polished, it is not likely to have foreign matter and debris on both sides of the surface.

[0019] Optionally, the side frame of the conveyor is detachably connected to a side block, the brush belt circulates on the surface of the side block and the transmission direction is perpendicular to the conveying direction of the conveyor, and the side block is provided with a suction port for forming negative pressure around the brush belt.

[0020] By adopting the above technical solution, the cleanliness of the surface of the cardboard that the pressing piece can abut against is improved, and the suction port can also promptly absorb the dust and impurities brushed off.

[0021] Optionally, the suction nozzle moving mechanism includes a vertical cylinder that drives the material transferring suction nozzle to move along the cardboard stacking direction, a translation cylinder that drives the material transferring suction nozzle to move along the transmission direction of the conveyor, a suction nozzle rod detachably connected to the material transferring suction nozzle, a sleeve that is detachably connected to the vertical cylinder or the translation cylinder power rod and for the suction nozzle rod to be inserted into, a pressure relief spring that forces the suction nozzle rod to separate from the sleeve, and a pressure sensor that is arranged on the sleeve and detects the pressure applied to the pressure relief spring. The pressure sensor and the vertical cylinder are both electrically connected to a controller.

[0022] By adopting the above technical solution, the material transfer suction nozzle can always suck a single cardboard from the stacked cardboards with varying heights at an appropriate pressure.

[0023] Optionally, the unloading table is slidably connected with a material alignment plate on both sides of the relative sides that can abut against the sides of the stacked cardboards, and the unloading table is rotatably connected with a bidirectional lead screw threadedly connected to the two material alignment plates, and the threads of the bidirectional lead screw at the positions where the two material alignment plates are connected are in opposite directions. The unloading table is provided with a lead screw motor for driving the bidirectional lead screw to rotate, and the unloading table is fixedly connected with a material blocking plate on the side close to the conveyor.

[0024] By adopting the above technical solution, the two aligning plates are close to each other to align the stacked cardboards along the width direction of the conveyor.

[0025] Optionally, both of the two material alignment plates are detachably connected to a pushing cylinder, and a power rod of the pushing cylinder is detachably connected to a pushing plate that can abut against the stacked cardboards and move toward the baffle plate.

[0026] By adopting the above technical solution, the baffle plate moves to align the stacked cardboards along the conveying direction of the conveyor, so that the position of the stacked cardboards is not prone to large deviations, and the position of the cardboards placed on the conveyor is not prone to large deviations.

[0027] In summary, the present application includes at least the following beneficial effects.

[0028] When the cardboard is sucked and moved from the unloading table, it will first pass through the side suction strips to remove dust and impurities on the surfaces of the opposite sides of the cardboard. Then the cardboard is transferred to the conveyor and moves forward. During the forward movement, it will pass through the middle suction strip, and the suction area of ​​the middle suction strip overlaps with the suction areas of the two side suction strips, so that the cardboard can obtain a more comprehensive surface cleaning, and it is not easy to apply excessive pressure to the ink on the printed surface of the cardboard, and it is not easy for some ink to fall off before glazing, which helps to improve the final surface quality of the cardboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the main structure of this application;

[0030] Figure 2 It is a structural schematic diagram of a partial section view of one side of the unloading table, and a partial section view of the sleeve and the nozzle rod;

[0031] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0032] Figure 4 It is a control block diagram of the vertical movement cylinder when the material transfer nozzle absorbs the cardboard on the unloading table;

[0033] Figure 5 yes Figure 1 Enlarged view of point B in the middle.

[0034] Explanation of the reference numerals in the accompanying drawings: 1. material unloading table; 2. material transfer suction nozzle; 3. suction nozzle moving mechanism; 31. suction port; 32. material leveling plate; 33. bidirectional screw; 34. screw motor; 35. material pushing cylinder; 36. material blocking plate; 37. material pushing plate; 4. conveyor; 41. controller; 42. vertical cylinder; 43. translation cylinder; 44. suction nozzle rod; 45. sleeve; 46. pressure relief spring; 47. pressure sensor; 48. brush belt; 49. side block; 5. side suction strip; 51. frame belt; 52. base block; 53. pressing piece; 54. material pressing mechanism; 55. middle suction strip; 56. return spring; 57. frame rod; 58. adjusting cylinder. DETAILED DESCRIPTION

[0035] The present application is further described in detail below in conjunction with the accompanying drawings.

[0036] The present application embodiment discloses a feeding device for a glazing machine, referring to Figure 1 and Figure 2 , including a discharging table 1 for stacked cardboards to be placed, a material transfer nozzle 2 connected to an external vacuum pump through a hose to absorb the cardboards is located above the discharging table 1, and a nozzle moving mechanism 3 is installed on the discharging table 1 to drive the material transfer nozzle 2 to move in a vertical plane. A conveyor 4 capable of receiving the cardboards absorbed by the material transfer nozzle 2 is placed on the ground on one side of the discharging table 1, and the conveyor belt of the conveyor 4 delivers the cardboards to the coating device of the glazing machine for glazing treatment.

[0037] Reference Figure 2 The unloading table 1 is slidably connected with a material leveling plate 32 on both sides of the opposite sides. The moving direction of the material leveling plate 32 is horizontal and perpendicular to the conveying direction of the conveyor 4. A bidirectional lead screw 33 with opposite thread directions on both sides of the center point is rotatably connected inside the unloading table 1. The two material leveling plates 32 are threadedly connected to the two-way lead screw 33 at equal distances on both sides of the center point one by one. The unloading table 1 is detachably connected with a lead screw motor 34 whose output shaft is coaxially detachably connected to the bidirectional lead screw 33. A vertical material baffle plate 36 is fixedly connected to the surface of the unloading table 1 for placing cardboards near the side of the conveyor 4, and the two vertical surfaces of the two material-leveling plates 32 facing each other are detachably connected to the pushing cylinders 35. The moving directions of the power rods of the two pushing cylinders 35 are consistent with the conveying direction of the conveyor 4. The power rods of the two pushing cylinders 35 are detachably connected to the vertical pushing plates 37, so that after the stacked cardboards are placed on the unloading table 1, the two material-leveling plates 32 can be close to each other and the pushing plate 37 can be close to the material baffle plate 36, so that the cardboards on the unloading table 1 are not prone to position deviation.

[0038] Reference Figure 2 and Figure 3 The nozzle moving mechanism 3 includes a vertical cylinder 42 detachably connected to the top of the unloading platform 1, the power rod of the vertical cylinder 42 is vertical, and the bottom end of the power rod of the vertical cylinder 42 is detachably connected to a horizontal translation cylinder 43, the power rod of the translation cylinder 43 moves along the conveying direction of the conveyor 4, and the bottom surface of the power rod of the translation cylinder 43 is detachably connected to a vertical sleeve 45, and the inner wall of the bottom end of the sleeve 45 is slidably connected to a nozzle rod 44 in the vertical direction, and the material transfer nozzle 2 is detachably connected to the bottom end of the nozzle rod 44. A slow-pressure spring 46 forcing the nozzle rod 44 to move downward is placed in the sleeve 45.

[0039] Reference Figure 3 and Figure 4The upper end of the pressure relief spring 46 is abutted against a pressure sensor 47 detachably connected to the inner wall of the sleeve 45. The pressure sensor 47 and the vertical cylinder 42 are electrically connected to the controller 41, so that when the pressure value detected by the pressure sensor 47 is greater than the preset pressure threshold in the controller 41, the power rod of the vertical cylinder 42 stops extending. In addition, the upper end of the nozzle rod 44 is relatively wide, so that the nozzle rod 44 is not easy to be separated from the bottom end of the sleeve 45 under the action of the pressure relief spring 46.

[0040] Reference Figure 1 and Figure 2 , two side suction strips 5 are detachably connected to the top of the unloading table 1. The side suction strips 5 can be connected to an external vacuum pump through a hose so that the bottom opening can inhale air. The length direction of the side suction strips 5 is consistent with the conveying direction of the conveyor 4. The cardboard sucked by the material transfer suction nozzle 2 moves to the highest height and will be close to the air inlet at the bottom of the side suction strips 5, so that the dust and impurities on the two sides of the upper surface of the cardboard will be sucked by the side suction strips 5, and the length of the air inlet of the side suction strips 5 is greater than the length of the cardboard, so that the two sides of the cardboard can be fully and thoroughly cleaned. There is a middle suction strip 55 just above the conveyor belt of the conveyor 4. The middle suction strip 55 can be connected to an external vacuum pump through a hose so that the bottom opening can inhale air. The length direction of the middle suction strip 55 is consistent with the width direction of the conveyor 4. The projection of the air inlets of the two side suction strips 5 on the vertical plane in the length direction of the middle suction strip 55 will overlap with the air inlet of the middle suction strip 55, so that it is not easy to have missed and uncleaned areas on the cardboard surface passing through the side suction strips 5 and the middle suction strips 55.

[0041] Reference Figure 1 and Figure 5 , rack belts 51 that circulate in the horizontal plane are installed on the racks on both sides of the conveyor 4. The rack belts 51 are driven by corresponding pulleys and motors. The transmission direction of the two rack belts 51 in the similar straight sections is consistent with the transmission direction of the conveyor 4. Each rack belt 51 can be detachably connected to a group of several base blocks 52. Each base block 52 is sleeved in the vertical direction and slidably connected to a pressing piece 53. The bottom and top surfaces of the pressing piece 53 are both large. The bottom surface of the pressing piece 53 can abut against the area on the upper surface of the cardboard that has been cleaned by the negative pressure of the edge suction strip 5, and the distance between two adjacent pressing pieces 53 is less than the length of the cardboard to be glazed, so as to ensure that there is a pressing piece 53 on both sides of the cardboard to abut. The base block 52 and the conveyor 4 are provided with a pressing mechanism 54 that forces the pressing piece 53 to move toward the cardboard.

[0042] Reference Figure 1 and Figure 5The pressing mechanism 54 includes a return spring 56 located between the top of the pressing piece 53 and the base block 52 and forcing the pressing piece 53 to move upward, so that there is a sufficient distance between the pressing piece 53 and the conveyor belt of the conveyor 4, so that the cardboard can be moved to the bottom of the pressing piece 53 under the drive of the conveyor belt of the conveyor 4. The frames on both sides of the conveyor 4 are slidably connected with frame rods 57 in the vertical direction. The length direction of the frame rods 57 is consistent with the transmission direction of the conveyor 4. The bottom surface of the frame rods 57 in the length direction can abut against the pressing piece 53, and the end of the frame rods 57 facing the unloading platform 1 and the end of the pressing piece 53 that initially abuts against the frame rods 57 are both inclined, so that when the pressing piece 53 moves to the frame rods 57, it can be pushed down and abut against the cardboard. The frames on both sides of the conveyor 4 are detachably connected with adjusting cylinders 58, and the power rods of the adjusting cylinders 58 are detachably connected to the frame rods 57, and the middle suction strips 55 are detachably connected between the two frame rods 57, so that the frame rods 57 and the middle suction strips 55 can be adjusted in height according to cardboards of different thicknesses.

[0043] Reference Figure 5 , the side blocks 49 can be detachably connected to the vertical sides of the two frames of the conveyor 4, and the upper surfaces of the two side blocks 49 are both connected to the brush belts 48, which are driven by the steel rods and motors in the side blocks 49 to circulate along the width direction of the conveyor 4, and the surface of the brush belts 48 is densely covered with bristles. The side blocks 49 are located at one end of the frame belt 51 close to the unloading platform 1, so that the pressing piece 53 will pass through the brush belt 48 before it is about to move to the top of the conveyor belt of the conveyor 4, so that the pressing piece 53 can be cleaned when it abuts against the bottom surface of the cardboard. In addition, the upper surface of the side block 49 is provided with a suction port 31 connected to an external vacuum pump through a hose, and the horizontal cross-section of the suction port 31 is a rectangular frame. The brush belt 48 is located in the inner circumference of the suction port 31, so that some sundries and impurities brushed off the bottom surface of the pressed piece 53 can be sucked away by the suction port 31 in time.

[0044] The implementation principle of the feeding device of a glazing machine in the embodiment of the present application is as follows: the stacked cardboard after printing is placed on the unloading table 1, the lead screw motor 34 first operates to make the two material alignment plates 32 approach each other, then the two material alignment plates 32 move away from each other and the power rod of the push cylinder 35 extends, so that the stacked cardboard is positioned. Then the power rod of the vertical cylinder 42 extends so that the material transfer nozzle 2 can contact and adsorb on the surface of the cardboard, and then the power rod of the vertical cylinder 42 moves upward so that the side edge of the upper surface of the cardboard is close to the edge suction strip 5, and then the translation cylinder 43 drives the cardboard to approach the conveyor 4, and then the power rod of the vertical cylinder 42 extends a predetermined length and the material transfer nozzle 2 releases the cardboard onto the conveyor belt of the conveyor 4. Subsequently, the cardboard will move to the bottom of the pressing piece 53, and then the pressing piece 53 facing the cardboard will move to the frame rod 57 and be forced to move downward to abut against the cardboard. Then the cardboard passes through the middle suction strip 55 for cleaning. After the cardboard completely passes through the middle suction strip 55, the pressing piece 53 will no longer abut against the frame rod 57, so that the cardboard is smoothly driven to the coating device of the glazing machine for glazing treatment.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A feeding device for a glazing machine, comprising a feeding table (1) for placing stacked cardboards, a material transfer nozzle (2) for sucking the cardboards, a nozzle moving mechanism (3) for driving the material transfer nozzle (2) to move in a vertical plane, and a conveyor (4) for receiving the cardboards sucked by the material transfer nozzle (2) and conveying them to a coating device of the glazing machine for glazing treatment, characterized in that: The unloading platform (1) is detachably connected to two side suction strips (5) corresponding to opposite sides of the paperboard and capable of forming negative pressure, and a middle suction strip (55) is provided around the conveyor (4) and close to one side of the paperboard and capable of forming negative pressure, and the projections of the air inlets of the two side suction strips (5) on the middle suction strip (55) and the air inlet of the middle suction strip (55) both have overlapping areas; The frames on both sides of the conveyor (4) are provided with frame belts (51) that can be cyclically driven along the conveying direction of the conveyor (4); the conveying speed of the frame belts (51) is consistent with the conveying speed of the conveyor (4); the frame belts (51) are detachably connected to a plurality of base blocks (52); the base blocks (52) are slidably connected to a pressing piece (53) that can be close to the side edge of the paperboard; the base blocks (52) and the conveyor (4) are provided with a pressing mechanism (54) that forces the pressing piece (53) to move toward the paperboard.

2. The feeding device of a glazing machine according to claim 1, characterized in that: The pressing mechanism (54) comprises a return spring (56) arranged between the base block (52) and the pressing piece (53) to force the pressing piece (53) away from the conveyor (4), and a frame rod (57) connected to a side frame of the conveyor (4) and capable of abutting against the pressing piece (53); the contacting ends of the frame rod (57) and the pressing piece (53) are both arranged in an inclined surface so that the pressing piece (53) can move toward the paperboard when it moves to the frame rod (57).

3. The feeding device of a glazing machine according to claim 2, characterized in that: The frame rod (57) is slidably connected to a side frame of the conveyor (4) along the moving direction of the pressing piece (53); the side frame of the conveyor (4) is provided with an adjusting cylinder (58) capable of moving the frame rod (57).

4. The feeding device of a glazing machine according to claim 3, characterized in that: The middle suction strip (55) is detachably connected to the frame rod (57).

5. The feeding device of a glazing machine according to claim 1, characterized in that: Brush belts (48) capable of contacting the surface of the pressing piece (53) close to the paperboard are provided at opposite sides of the frame of the conveyor (4). The brush belts (48) are located at one end of the frame belt (51) close to the unloading platform (1).

6. The feeding device of a glazing machine according to claim 5, characterized in that: The side frame of the conveyor (4) is detachably connected to a side block (49); the brush belt (48) is circulated and driven on the surface of the side block (49) and the driving direction is perpendicular to the conveying direction of the conveyor (4); and the side block (49) is provided with a suction port (31) for forming negative pressure around the brush belt (48).

7. The feeding device of a glazing machine according to claim 1, characterized in that: The nozzle moving mechanism (3) comprises a vertical cylinder (42) for driving the material transfer nozzle (2) to move along the cardboard stacking direction, a translation cylinder (43) for driving the material transfer nozzle (2) to move along the transmission direction of the conveyor (4), a nozzle rod (44) detachably connected to the material transfer nozzle (2), a sleeve (45) detachably connected to the power rod of the vertical cylinder (42) or the translation cylinder (43) and for the nozzle rod (44) to be inserted, a pressure relief spring (46) for forcing the nozzle rod (44) to be separated from the sleeve (45), and a pressure sensor (47) provided on the sleeve (45) and detecting the pressure applied to the pressure relief spring. The pressure sensor (47) and the vertical cylinder (42) are both electrically connected to a controller (41).

8. The feeding device of a glazing machine according to claim 1, characterized in that: The unloading platform (1) is slidably connected to two opposite sides of a material alignment plate (32) capable of abutting against the side surfaces of the stacked cardboards. The unloading platform (1) is rotatably connected to a bidirectional lead screw (33) threadedly connected to the two material alignment plates (32). The thread directions of the bidirectional lead screw (33) at the position where the two material alignment plates (32) are connected are opposite. The unloading platform (1) is provided with a lead screw motor (34) for driving the bidirectional lead screw (33) to rotate. A material blocking plate (36) is fixedly connected to the side of the unloading platform (1) close to the conveyor (4).

9. The feeding device of a glazing machine according to claim 8, characterized in that: The two material alignment plates (32) are both detachably connected to a material pushing cylinder (35), and a power rod of the material pushing cylinder (35) is detachably connected to a material pushing plate (37) capable of abutting against stacked cardboards and moving toward a material blocking plate (36).

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