Printing machine capable of preventing printing displacement

Abstract

The utility model relates to the technical field of printing machines, in particular to a printing machine capable of preventing printing displacement, which comprises a U-shaped bottom plate, two rotating shafts are rotatably connected in the U-shaped bottom plate, four transmission wheels are arranged on the outer walls of the rotating shafts, the two transmission wheels which are oppositely arranged left and right are jointly connected with a conveying belt, and a U-shaped frame is arranged at the top of the U-shaped bottom plate. A printing assembly is arranged in the U-shaped frame, an anti-displacement assembly is arranged at the bottom of the inner wall of the U-shaped bottom plate, and a centering assembly is arranged at the position, close to the right side of the U-shaped frame, of the outer side of the U-shaped bottom plate. According to the printing machine with the printing displacement prevention function, when a movable rod of a first electric telescopic rod shrinks, three strip-shaped top plates are located on the right side of a U-shaped frame, and when a carton moves to the tops of the three strip-shaped top plates along with a conveying belt, the interior of a vacuum negative pressure cavity is vacuumized, so that the bottom of the carton is adsorbed and fixed through the three strip-shaped top plates; and during printing, the movable rod of the first electric telescopic rod stretches out to be matched with the printing roller, and printing of the carton is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machines, in particular to a printing machine with a function of preventing printing from causing displacement. Background Art

[0002] Cartons are the most widely used packaging products. Depending on the materials used, there are corrugated boxes, single-layer cardboard boxes, etc. In order to enrich the content of product packaging boxes, manufacturers often print text or patterns on cartons (cardboards). Printing can print the brand logo, name or other identification information on the carton, which can facilitate consumers to identify and remember the brand and enhance brand exposure. The carton can also be printed with various information such as the product name, ingredients, production date, shelf life, etc., to facilitate consumers to understand the product. Therefore, carton printing machines are often needed in the production process of cartons.

[0003] The patent with publication number CN213441730U discloses a printing device for carton processing that can avoid printing position deviation, including a workbench, a stabilizing structure and an anti-deviation structure; the workbench: an electric conveyor is arranged in the opening of its upper surface, a first U-shaped frame is arranged at the left end of the upper surface of the workbench, a first mounting plate is arranged at the upper end of the right surface of the first U-shaped frame, a second U-shaped frame is arranged in the middle of the upper surface of the workbench, an inkjet cartridge is arranged at the top of the inner cavity of the second U-shaped frame, a printing shaft is rotatably connected to the ink outlet on the lower surface of the inkjet cartridge through a bearing, and pillars are symmetrically arranged at the four corners of the lower surface of the workbench; the stabilizing structure is arranged in the inner cavity of the first U-shaped frame; the anti-deviation structure is arranged on the lower surface of the first mounting plate; the printing device for carton processing that can avoid printing position deviation meets the demand for printing cartons during processing, plays an anti-deviation role during transmission printing, and reduces the workload of staff.

[0004] In the specific use of the above-mentioned prior art, when the motor rotates forward, it drives the screw to rotate, causing the second mounting plate to move relatively. When the appropriate distance is reached, the motor stops operating, and the carton passes through the gap of the third rotating drum, thereby playing a role in preventing deviation during transmission and printing. However, in actual use, the third rotating drum may block the carton from passing through. This is because when the carton is placed on the electric conveyor belt, if the two sides of the carton are not aligned with the two third rotating drums in advance, one side of the carton will collide with one of the third rotating drums, causing the third rotating drum to hinder the movement of the carton. Therefore, the above-mentioned prior art has usage defects in actual use. In view of this, we propose a printing press with anti-printing displacement. Utility Model Content

[0005] The utility model aims to provide a printing machine with a function of preventing printing from displacement, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The printing machine with anti-printing displacement comprises a U-shaped bottom plate, wherein the inner wall of the U-shaped bottom plate is rotatably connected with a rotating shaft between the front and rear sides and near the left and right sides of the bottom, and the outer wall of the rotating shaft is provided with four transmission wheels arranged equidistantly in front and behind, and two transmission wheels arranged opposite to each other on the left and right are commonly connected with a conveyor belt, and there are four conveyor belts in total, and a motor is provided at the front side of the U-shaped bottom plate and near the left side, and the motor is connected to an external power supply to work, and the output shaft of the motor is coaxially connected to the front end of the left rotating shaft, and one of the rotating shafts is driven to rotate by the motor, so that the two rotating shafts drive the four conveyor belts to be driven, and then the four conveyor belts drive the cartons to be printed to move toward the printing assembly;

[0008] A U-shaped frame is provided at the top of the U-shaped bottom plate and near the left side, and a printing assembly is provided at the top of the inner side of the U-shaped frame. The printing assembly includes an inkjet cartridge and a printing roller. The printing roller is located at the ink outlet of the inkjet cartridge. It is a prior art and will not be described in detail here. It is used for printing text information on the surface of the carton.

[0009] The bottom of the inner wall of the U-shaped bottom plate is provided with an anti-displacement component, and the anti-displacement component includes a strip bottom plate fixedly connected to the bottom of the inner wall of the U-shaped bottom plate, a first rectangular solid block is provided in the middle of the top of the strip bottom plate, a first electric telescopic rod is provided on the left side of the first rectangular solid block, the first electric telescopic rod is connected to an external power supply for operation, a rectangular moving block is fixedly connected to the movable end of the first electric telescopic rod, a rectangular bottom plate is provided at the bottom of the rectangular moving block, three strip top plates are arranged equidistantly front and back above the rectangular bottom plate, a fixed support rod is provided at the bottom of the strip top plate and near the left and right ends, the bottom end of the fixed support rod is fixedly connected to the top of the rectangular bottom plate, The top of the strip top plate is provided with three vacuum negative pressure chambers which are arranged equidistantly from left to right. The rectangular moving block is driven to move left and right by the first electric telescopic rod, so that the rectangular moving block drives the rectangular bottom plate to move left and right, and then the rectangular bottom plate drives the three strip top plates to move left and right. When the movable rod of the first electric telescopic rod is retracted, the three strip top plates are located on the right side of the U-shaped frame. When the carton moves to the top of the three strip top plates along the conveyor belt, the vacuum negative pressure chamber is evacuated, so that the three strip top plates adsorb and fix the bottom of the carton, thereby preventing the carton from shifting during printing. When printing the carton, the movable rod of the first electric telescopic rod is extended to cooperate with the rotation of the printing roller to realize the printing of the carton.

[0010] A centering component is provided on the outer side of the U-shaped bottom plate and close to the right side of the U-shaped frame, and the centering component includes two second electric telescopic rods which are symmetrically arranged front and back, and the second electric telescopic rods are operated by an external power supply. The two second electric telescopic rods are respectively fixedly connected to the front and rear sides of the U-shaped bottom plate, and the movable rod of the second electric telescopic rod passes through the side of the U-shaped bottom plate and is fixedly connected with a strip push plate. When the carton moves to the top of the three strip top plates along the conveyor belt, the two second electric telescopic rods respectively drive the two strip push plates to move relative to each other, so as to center the carton and ensure that the printing position of the carton is accurate.

[0011] Preferably, the strip-shaped top plate is located between two adjacent conveyor belts, and the top of the strip-shaped top plate and the top of the conveyor belt are located on the same plane.

[0012] Preferably, a U-shaped groove is opened at the bottom of the rectangular bottom plate and near the front and rear sides, and a plurality of rollers equidistantly arranged on the left and right sides are rotatably connected in the U-shaped groove. The rollers roll on the bottom of the inner wall of the U-shaped bottom plate, which is conducive to the left and right movement of the rectangular bottom plate.

[0013] Preferably, a third rectangular solid block is provided at both the front and rear ends of the right side of the top of the rectangular bottom plate, a first positioning rod is provided on the right side of the two third rectangular solid blocks, and a second rectangular solid block is provided at both the front and rear ends of the top of the strip bottom plate, and the right ends of the two first positioning rods pass through the left sides of the two second rectangular solid blocks respectively, which is conducive to the stable left and right movement of the rectangular bottom plate.

[0014] Preferably, vacuum vertical pipes are provided at the bottom of the strip top plate and at the bottom ends of the three vacuum negative pressure chambers. The bottom ends of the three vacuum vertical pipes connected to the same strip top plate are commonly connected to a vacuum horizontal pipe, and the left ends of the three vacuum horizontal pipes are commonly connected to a vacuum vertical pipe. The vacuum vertical pipe is externally connected to a vacuum pumping device, so that the vacuum negative pressure chamber of the strip top plate generates suction.

[0015] Preferably, when the strip push plate moves to the top of the conveyor belt, the bottom of the strip push plate is 1-2 mm away from the top of the conveyor belt to avoid wear between the strip push plate and the conveyor belt.

[0016] Preferably, second positioning rods are provided on the opposite sides of the two strip push plates and near the left and right ends. The end of the second positioning rod away from the strip push plate passes through the inner side of the U-shaped bottom plate to the outside, which is conducive to the forward and backward movement of the strip push plates.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The printing press with anti-printing displacement drives one of the rotating shafts to rotate through a motor, so that the two rotating shafts drive four conveyor belts to drive, and then the four conveyor belts drive the cartons to be printed to move toward the printing component, and the rectangular moving block is driven to move left and right by the first electric telescopic rod, so that the rectangular moving block drives the rectangular bottom plate to move left and right, and then the rectangular bottom plate drives the three strip top plates to move left and right. When the movable rod of the first electric telescopic rod is retracted, the three strip top plates are located on the right side of the U-shaped frame. When the carton moves to the top of the three strip top plates along with the conveyor belt, the vacuum negative pressure chamber is evacuated, so that the three strip top plates adsorb and fix the bottom of the carton, thereby preventing the carton from shifting during printing. When printing the carton, the movable rod of the first electric telescopic rod is extended to cooperate with the rotation of the printing roller to realize the printing of the carton.

[0019] 2. For this printing press with anti-printing displacement function, when the carton moves to the top of the three strip top plates along the conveyor belt, the two second electric telescopic rods respectively drive the two strip push plates to move relative to each other, centering the carton to ensure the accurate printing position of the carton. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall first state structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the overall second state structure of the utility model;

[0022] Figure 3 It is one of the partial structural schematic diagrams of the utility model;

[0023] Figure 4 This is the second schematic diagram of the partial structure of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the anti-displacement component in the utility model;

[0025] Figure 6 It is a partial structural schematic diagram of the anti-displacement component in the utility model.

[0026] In the figure: 1. U-shaped bottom plate; 2. rotating shaft; 20. driving wheel; 3. conveyor belt; 4. U-shaped frame; 5. printing assembly; 50. inkjet cartridge; 51. printing roller; 6. anti-displacement assembly; 60. strip bottom plate; 600. first rectangular solid block; 601. second rectangular solid block; 61. first electric telescopic rod; 62. rectangular moving block; 63. rectangular bottom plate; 630. U-shaped groove; 631. third rectangular solid block; 64. strip top plate; 640. fixed support rod; 641. vacuum negative pressure chamber; 642. vacuum vertical pipe; 643. vacuum horizontal pipe; 65. vacuum longitudinal pipe; 66. roller; 67. first positioning rod; 7. centering assembly; 70. second electric telescopic rod; 71. strip push plate; 72. second positioning rod; 8. motor. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] See also Figure 1-Figure 6 , the utility model provides a technical solution:

[0030] The printing machine with anti-displacement printing comprises a U-shaped bottom plate 1, a rotating shaft 2 is rotatably connected between the front and rear sides of the inner wall of the U-shaped bottom plate 1 and near the left and right sides of the bottom, the outer wall of the rotating shaft 2 is provided with four transmission wheels 20 arranged equidistantly in the front and back, two transmission wheels 20 arranged opposite to each other on the left and right are commonly connected with a conveyor belt 3, and there are four conveyor belts 3 in total, a motor 8 is provided on the front side of the U-shaped bottom plate 1 and near the left side, the motor 8 is connected to an external power supply to work, the output shaft of the motor 8 is coaxially connected to the front end of the left rotating shaft 2, and one of the rotating shafts 2 is driven to rotate by the motor 8, so that the two rotating shafts 2 drive the four conveyor belts 3 to transmit, and then the four conveyor belts 3 drive the cartons to be printed to move toward the printing component 5;

[0031] A U-shaped frame 4 is provided at the top and near the left side of the U-shaped bottom plate 1, and a printing assembly 5 is provided at the top of the inner side of the U-shaped frame 4. The printing assembly 5 includes an inkjet cartridge 50 and a printing roller 51. The printing roller 51 is located at the ink outlet of the inkjet cartridge 50. It is a prior art and will not be described in detail here. It is used for printing text information on the surface of the carton.

[0032] An anti-displacement component 6 is provided at the bottom of the inner wall of the U-shaped bottom plate 1, and the anti-displacement component 6 includes a strip bottom plate 60 fixedly connected to the bottom of the inner wall of the U-shaped bottom plate 1, a first rectangular solid block 600 is provided in the middle of the top of the strip bottom plate 60, a first electric telescopic rod 61 is provided on the left side of the first rectangular solid block 600, the first electric telescopic rod 61 is connected to an external power supply for operation, a rectangular moving block 62 is fixedly connected to the movable end of the first electric telescopic rod 61, a rectangular bottom plate 63 is provided at the bottom of the rectangular moving block 62, three strip top plates 64 arranged equidistantly from front to back are provided above the rectangular bottom plate 63, fixed support rods 640 are provided at the bottom of the strip top plate 64 and near the left and right ends, the bottom ends of the fixed support rods 640 are fixedly connected to the top of the rectangular bottom plate 63, and the strip top plate 64 is fixedly connected to the top of the rectangular bottom plate 63. The top is provided with three vacuum negative pressure chambers 641 which are arranged equidistantly from left to right. The rectangular moving block 62 is driven to move left to right by the first electric telescopic rod 61, so that the rectangular moving block 62 drives the rectangular bottom plate 63 to move left to right, and then the rectangular bottom plate 63 drives the three strip top plates 64 to move left to right. When the movable rod of the first electric telescopic rod 61 is retracted, the three strip top plates 64 are located on the right side of the U-shaped frame 4. When the carton moves to the top of the three strip top plates 64 along the conveyor belt 3, the vacuum negative pressure chamber 641 is evacuated, so that the three strip top plates 64 adsorb and fix the bottom of the carton, thereby preventing the carton from shifting during printing. When printing the carton, the movable rod of the first electric telescopic rod 61 is extended to cooperate with the rotation of the printing roller 51 to realize the printing of the carton.

[0033] A centering component 7 is provided on the outer side of the U-shaped bottom plate 1 and close to the right side of the U-shaped frame 4. The centering component 7 includes two second electric telescopic rods 70 which are symmetrically arranged front and back. The second electric telescopic rods 70 work with an external power supply. The two second electric telescopic rods 70 are respectively fixedly connected to the front and rear sides of the U-shaped bottom plate 1. The movable rod of the second electric telescopic rod 70 passes through the side of the U-shaped bottom plate 1 and is fixedly connected with a strip push plate 71. When the carton moves to the top of the three strip top plates 64 along with the conveyor belt 3, the two second electric telescopic rods 70 respectively drive the two strip push plates 71 to move relative to each other, so as to center the carton and ensure that the printing position of the carton is accurate.

[0034] In this embodiment, the strip-shaped top plate 64 is located between two adjacent conveyor belts 3 , and the top of the strip-shaped top plate 64 and the top of the conveyor belt 3 are located on the same plane.

[0035] Specifically, a U-shaped groove 630 is provided at the bottom of the rectangular bottom plate 63 and near the front and rear sides. A plurality of rollers 66 equidistantly arranged on the left and right sides are rotatably connected in the U-shaped groove 630. The rollers 66 roll on the bottom of the inner wall of the U-shaped bottom plate 1, which is conducive to the left and right movement of the rectangular bottom plate 63.

[0036] Furthermore, third rectangular solid blocks 631 are provided at the front and rear ends of the right side of the top of the rectangular bottom plate 63, first positioning rods 67 are provided on the right sides of the two third rectangular solid blocks 631, and second rectangular solid blocks 601 are provided at the front and rear ends of the top of the strip bottom plate 60, and the right ends of the two first positioning rods 67 pass through the left sides of the two second rectangular solid blocks 601 respectively, which is conducive to the stable left and right movement of the rectangular bottom plate 63.

[0037] Furthermore, vacuum vertical pipes 642 are provided at the bottom of the strip top plate 64 and at the bottom ends of the three vacuum negative pressure chambers 641. The bottom ends of the three vacuum vertical pipes 642 connected to the same strip top plate 64 are commonly connected to a vacuum horizontal pipe 643. The left ends of the three vacuum horizontal pipes 643 are commonly connected to a vacuum vertical pipe 65. The vacuum vertical pipe 65 is externally connected to a vacuum pumping device, thereby generating suction in the vacuum negative pressure chamber 641 of the strip top plate 64.

[0038] Furthermore, when the strip push plate 71 moves to the top of the conveyor belt 3 , the bottom of the strip push plate 71 is 1-2 mm away from the top of the conveyor belt 3 , thereby preventing wear between the strip push plate 71 and the conveyor belt 3 .

[0039] Furthermore, second positioning rods 72 are provided on the opposite sides of the two strip push plates 71 and near the left and right ends. One end of the second positioning rod 72 away from the strip push plate 71 passes through the inner side of the U-shaped bottom plate 1 to the outside, which is conducive to the forward and backward movement of the strip push plate 71.

[0040] When the printing machine with anti-printing displacement of the present embodiment is in use, the staff places the carton to be printed on the conveyor belt 3, and the motor 8 drives one of the rotating shafts 2 to rotate, so that the two rotating shafts 2 drive the four conveyor belts 3 to transmit, and then the four conveyor belts 3 drive the carton to be printed to move toward the printing component 5. When the carton moves to the top of the three strip top plates 64 along with the conveyor belt 3, the two second electric telescopic rods 70 respectively drive the two strip push plates 71 to move relatively, and center the carton to ensure that the printing position of the carton is accurate. After the carton is centered, all the vacuum negative pressure chambers 641 are evacuated, so that the three strip top plates 64 adsorb and fix the bottom of the carton, and then the movable rod of the first electric telescopic rod 61 is extended, indirectly driving the three strip top plates 64 to move left, and cooperating with the rotation of the printing roller 51 to realize the printing of the carton. Since the three strip top plates 64 adsorb and fix the bottom of the carton, the displacement of the carton during printing is effectively avoided, and the printing quality is ensured.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A printing machine with a device for preventing printing displacement, comprising a U-shaped bottom plate (1), Features: A rotating shaft (2) is rotatably connected between the front and rear sides of the inner wall of the U-shaped bottom plate (1) and at positions close to the left and right sides of the bottom. The outer wall of the rotating shaft (2) is provided with four transmission wheels (20) arranged equidistantly from front to back. Two of the transmission wheels (20) arranged opposite to each other on the left and right are commonly connected to a conveyor belt (3). A motor (8) is provided at the front side and close to the left side of the U-shaped bottom plate (1). The output shaft of the motor (8) is coaxially connected to the front end of the left rotating shaft (2). A conveyor belt (3) is provided at the top and close to the left side of the U-shaped bottom plate (1). A U-shaped frame (4) is provided at the top of the inner side of the U-shaped frame (4), wherein the printing assembly (5) comprises an inkjet cartridge (50) and a printing roller (51), wherein the printing roller (51) is located at the ink outlet of the inkjet cartridge (50), and an anti-displacement assembly (6) is provided at the bottom of the inner wall of the U-shaped bottom plate (1), wherein the anti-displacement assembly (6) comprises a strip bottom plate (60) fixedly connected to the bottom of the inner wall of the U-shaped bottom plate (1), and a first rectangular solid block (600) is provided at the middle of the top of the strip bottom plate (60), wherein the first rectangular solid block (600) 00), a first electric telescopic rod (61) is provided on the left side, a movable end of the first electric telescopic rod (61) is fixedly connected to a rectangular moving block (62), a rectangular bottom plate (63) is provided at the bottom of the rectangular moving block (62), three strip-shaped top plates (64) are arranged equidistantly from front to back above the rectangular bottom plate (63), a fixed support rod (640) is provided at the bottom of the strip-shaped top plate (64) and near the left and right ends, the bottom end of the fixed support rod (640) is fixedly connected to the top of the rectangular bottom plate (63), and the The top of the strip-shaped top plate (64) is provided with three vacuum negative pressure chambers (641) which are arranged equidistantly from left to right. A centering component (7) is provided on the outer side of the U-shaped bottom plate (1) and close to the right side of the U-shaped frame (4). The centering component (7) comprises two second electric telescopic rods (70) which are symmetrically arranged front to back. The two second electric telescopic rods (70) are respectively fixedly connected to the front and rear sides of the U-shaped bottom plate (1). The movable rod of the second electric telescopic rod (70) passes through the side of the U-shaped bottom plate (1) and is fixedly connected to the strip-shaped push plate (71).

2. The printing press with a printing prevention device according to claim 1, Features: The strip-shaped top plate (64) is located between two front and rear adjacent conveyor belts (3), and the top of the strip-shaped top plate (64) and the top of the conveyor belt (3) are located on the same plane.

3. The printing press with a printing prevention device according to claim 1, Features: A U-shaped groove (630) is provided at the bottom of the rectangular bottom plate (63) and near the front and rear sides. A plurality of rollers (66) arranged equidistantly from left to right are rotatably connected in the U-shaped groove (630).

4. The printing press with a printing prevention device according to claim 1, Features: A third rectangular solid block (631) is provided at both the front and rear ends of the right side of the top of the rectangular bottom plate (63), and a first positioning rod (67) is provided on the right side of the two third rectangular solid blocks (631). A second rectangular solid block (601) is provided at both the front and rear ends of the top of the strip bottom plate (60), and the right ends of the two first positioning rods (67) pass through the left sides of the two second rectangular solid blocks (601) respectively.

5. The printing press with a printing prevention device according to claim 1, Features: A vacuum vertical pipe (642) is provided at the bottom of the strip top plate (64) and at the bottom ends of the three vacuum negative pressure chambers (641); the bottom ends of the three vacuum vertical pipes (642) connected to the same strip top plate (64) are commonly connected to a vacuum horizontal pipe (643); and the left ends of the three vacuum horizontal pipes (643) are commonly connected to a vacuum vertical pipe (65).

6. The printing press with a printing prevention device according to claim 1, Features: When the strip-shaped push plate (71) moves to the top of the conveyor belt (3), the bottom of the strip-shaped push plate (71) is 1-2 mm away from the top of the conveyor belt (3).

7. The printing press with a printing prevention device according to claim 1, Features: Second positioning rods (72) are provided on opposite sides of the two strip-shaped push plates (71) and near the left and right ends. One end of the second positioning rod (72) away from the strip-shaped push plates (71) passes through the inner side of the U-shaped bottom plate (1) to the outside.

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