Packaging paperboard surface printing device

Abstract

The utility model belongs to the field of paperboard printing devices, and discloses a packaging paperboard surface printing device which comprises side plates, a plurality of supporting rollers and a printing machine body. The driving unit comprises a motor and a driving shaft; the conveying unit comprises a fixed conveying belt and a movable conveying belt; the adjusting unit comprises a driving assembly and a connecting piece, and the connecting piece is connected with the movable conveying belt. The guiding unit is installed on the connecting piece. Due to the arrangement of the supporting rollers, the guiding unit can be located between the supporting rollers or between the supporting rollers and the driving shaft, and the guiding unit can extend to the position above the top edge of the movable conveying belt from the position below the top edge of the movable conveying belt (namely, the side wall of a thick or thin paperboard can be stably guided by the guiding unit). Therefore, when the paperboards are conveyed by the conveying unit and guided by the guiding unit, the paperboards cannot be stuck or clamped, and the paperboards with different widths can be supported, conveyed and guided by controlling the position of the connecting piece through the adjusting unit.

Description

Technical Field

[0001] This utility model belongs to the technical field of paperboard printing equipment, and specifically relates to a printing device for the surface of packaging paperboard. Background Technology

[0002] Packaging cardboard is used to store and protect goods. It is widely used because of its low cost and light weight. In order to make it easier for people to identify the goods inside the cardboard and distinguish the brand, unique patterns are usually printed on the outside of the packaging cardboard. Printing patterns requires printing equipment.

[0003] Chinese Patent CN220114271U discloses a printing and pressing machine for packaging cardboard, comprising a printing and pressing machine body and a conveyor belt. A printing roller is installed inside the printing and pressing machine body, and a mounting frame is installed on one side of the machine body. The conveyor belt is installed inside the mounting frame. Support legs are installed below both the printing and pressing machine body and the mounting frame. A guiding mechanism is provided above the mounting frame, and a cleaning mechanism is provided on one side of the printing and pressing machine body. By using the guiding mechanism above the mounting frame, and through the cooperation of the fixed plate, cylinder, guide seat, guide roller, and limit rod of the guiding mechanism, the guide seat and guide roller can be moved. This allows the guide roller to guide cardboard of different sizes, making the cardboard more accurate during transport and thus improving the printing and pressing effect, significantly enhancing the uniformity of the printing and pressing machine during use.

[0004] However, in actual use, because the guiding mechanism is located above the conveyor belt, a gap is required between the bottom of the guiding mechanism and the top surface of the conveyor belt to avoid friction between the conveyor belt and the bottom of the guiding mechanism. When thinner cardboard is conveyed on the conveyor belt and guided by the guiding mechanism, this gap can cause the cardboard to get stuck, preventing it from being properly guided and potentially hindering its transport. This can lead to printing deviations and is detrimental to practical use. In summary, the above-mentioned device may cause printing deviations when guiding and printing on thinner cardboard. Utility Model Content

[0005] The present invention aims to provide a printing apparatus for the surface of packaging cardboard, so as to solve the problem mentioned above that existing printing apparatus may have printing deviations when printing on thinner cardboard.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a packaging paperboard surface printing device, comprising...

[0007] There are two symmetrically arranged side plates, with multiple support rollers spaced apart between the two side plates, and the printing press body is installed on the side plates.

[0008] The drive unit includes a motor and two drive shafts. The two drive shafts are installed between the two side plates, and the support roller is located between the two drive shafts. The motor is fixed to the outer wall of the side plate, and its movable end is connected to the end of one drive shaft.

[0009] The conveying unit includes a fixed conveyor belt and a movable conveyor belt respectively fitted on support rollers. The two ends of the fixed conveyor belt are respectively wound around two drive shafts, and the two ends of the movable conveyor belt are respectively slidably fitted on the two drive shafts.

[0010] The adjustment unit includes a drive assembly and a connector, the connector being connected to a movable conveyor belt, and the drive assembly being used to control the distance of the connector relative to a stationary conveyor belt.

[0011] The guide unit is mounted on the connector and is located on the side of the moving conveyor belt away from the fixed conveyor belt.

[0012] The principle and effects of this technical solution:

[0013] 1. The arrangement of multiple spaced support rollers allows the guide unit to be located between the support rollers or between the support roller and the drive shaft. The guide unit can extend from below the top edge of the movable conveyor belt to above the top edge of the movable conveyor belt (meaning that both thicker and thinner cardboard sidewalls can be stably guided by the guide unit). As a result, the cardboard will not jam or get stuck when it is conveyed by the conveyor unit and guided by the guide unit. The guide unit and the movable conveyor belt are both installed on the connector. By adjusting the position of the connector, the support width of the conveyor unit and the guide width of the guide unit can be controlled, thus enabling the support, conveying and guiding of cardboard of different widths.

[0014] 2. By setting up a fixed conveyor belt and a movable conveyor belt, the fixed conveyor belt can stably support and transport the middle of the cardboard, and the width of the movable conveyor belt can be adjusted according to the width of the cardboard, thereby supporting and transporting both ends of the cardboard. The guide unit limits the sides of the movable conveyor belt, thereby limiting and guiding the cardboard, thus ensuring stable transport on the conveying unit.

[0015] 3. The support roller can support the middle of the conveying unit, and the motor drives the drive shaft to rotate, which in turn drives the conveying unit to rotate, thereby bringing the paperboard closer to the printing press.

[0016] The present invention is further configured such that the cross-section of the drive shaft connected to the motor is polygonal.

[0017] The principle and effect of this technical solution: By making the cross-section of the drive shaft connected to the motor polygonal, the two ends of the movable conveyor belt can slide and be fitted onto the drive shaft at the same time, while the ends of the movable conveyor belt can also rotate due to the rotation of the drive shaft, thus ensuring that the movable conveyor belt does not lose its conveying function.

[0018] The present invention is further configured such that: the movable conveyor belt includes a belt and two conveyor rollers, the belt is sleeved on the support roller, the two ends of the belt are respectively wound around the two conveyor rollers, and the inner side of each of the two conveyor rollers is fixed with a bushing, the bushing is slidably sleeved on the drive shaft, and the connecting piece is rotatably connected to the bushing.

[0019] The principle and effect of this technical solution: The conveyor roller is fixed by the bushing, so that the polygonal drive shaft can drive the bushing to rotate the conveyor roller. At the same time, the bushing can also slide on the drive shaft to adjust the position of the entire movable conveyor belt. The connector is connected to the bushing, so the connector can control the position of the entire movable conveyor belt relative to the fixed conveyor belt through the drive component without interfering with the rotation of the bushing. The guide unit is installed on the connector, and the guide unit can adjust its position synchronously with the movable conveyor belt, thus achieving the function of adjusting the support and conveying size and the guiding size according to different cardboard widths.

[0020] The present invention is further configured such that: the connecting member is a U-shaped bracket, the two ends of the U-shaped bracket are respectively connected to the bushings on both sides, the guide unit is installed at the bottom of the inner side of the U-shaped bracket, and the top edge of the guide unit is higher than the top edge of the belt.

[0021] The principle and effect of this technical solution: The two sides of the belt are connected by a U-shaped bracket, so that the belt, conveyor roller, bushing and U-shaped bracket become a whole. The position of the movable conveyor belt can be changed by changing the position of the U-shaped bracket. The guide unit is installed on the U-shaped bracket, so the guide unit and the movable conveyor belt can be adjusted synchronously, which makes it more convenient to adjust when adapting to cardboard of different widths.

[0022] The present invention is further configured such that: the drive assembly includes a turntable and a bidirectional screw, the bidirectional screw is rotatably mounted between the two side plates, the turntable is fixed to the end of the bidirectional screw, and a U-shaped bracket is threadedly fitted onto the bidirectional screw.

[0023] The principle and effect of this technical solution: The turntable drives the bidirectional screw to rotate, which in turn drives the U-shaped bracket to rotate. The two ends of the U-shaped bracket cannot rotate due to the bushings. Therefore, the U-shaped bracket can only move along the length of the bidirectional screw under the drive of the bidirectional screw, thereby driving the bushings, conveyor rollers, belts and guide units to adjust their positions as a whole, so as to guide, support and convey paperboards of different widths.

[0024] The present invention is further configured such that: the guide unit includes a plurality of mounting rods spaced apart on the bottom inner side of the U-shaped bracket, the mounting rods and the support rollers are distributed alternately, and a guide roller is rotatably mounted on the top of the mounting rod, the top edge of the guide roller is higher than the top edge of the belt, and the bottom edge of the guide roller is lower than the top edge of the belt.

[0025] The principle and effect of this technical solution: By setting the mounting rod and guide roller, the guide unit can be installed in the gap between the support rollers or in the gap between the support roller and the drive shaft, so that the movement of the guide unit is not restricted by the support roller or the drive shaft, thus avoiding interference. The guide roller is located on the side of the belt and extends from below the top edge of the belt to above the top edge. Therefore, both thinner and thicker cardboard can stably abut against the guide roller when being conveyed on the belt, thus preventing jamming and other problems.

[0026] The present invention is further configured to include a scraping unit, which includes a pole and a cleaning plate. The pole is fixed to a side plate, and the cleaning plate is fixed to the side wall of the pole. The bottom of the cleaning plate has bristles.

[0027] The principle and effect of this technical solution: By installing the upright on the side plate and the cleaning plate on the upright, the width and position of the conveying unit will not affect the scraping effect of the cleaning plate, and the cleaning plate can scrape off dust and impurities on the cardboard.

[0028] The present invention is further configured such that the cleaning plate is arranged at an angle.

[0029] The principle and effect of this technical solution: By tilting the design, the cardboard is made easier to brush through. Attached Figure Description

[0030] Figure 1 This is the front view of the present invention;

[0031] Figure 2 for Figure 1 Structural diagram of the middle conveyor unit;

[0032] Figure 3 for Figure 2 Enlarged structural diagram of the central adjustment unit;

[0033] Figure 4 for Figure 3 Enlarged structural diagram of the middle conveyor roller;

[0034] Figure 5 for Figure 1 A magnified view of a section of the central scraping unit. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0036] The reference numerals in the accompanying drawings include:

[0037] 101. Side plate; 102. Printing press body; 103. Support roller; 104. Scale;

[0038] 201. Motor; 202. Drive shaft;

[0039] 301. Fixed conveyor belt; 302. Movable conveyor belt; 3021. Belt; 3022. Conveyor roller; 3023. Bushing;

[0040] 401. U-shaped bracket; 402. Two-way screw; 403. Turntable;

[0041] 501. Mounting rod; 502. Guide roller;

[0042] 601. Pole; 602. Cleaning board.

[0043] Example:

[0044] As attached Figure 1-5 As shown, this utility model discloses a packaging paperboard surface printing device, including a side plate 101, a drive unit, a conveying unit, an adjustment unit, a guide unit, and a scraping unit. Two side plates 101 are symmetrically arranged, and multiple support rollers 103 are arranged at intervals between the two side plates 101. A printing machine body 102 is installed on the side plate 101. The printing machine body 102 can be a Shencai SC2600-2A corrugated carton printing machine, and its input end corresponds to the end of the conveying unit.

[0045] The drive unit includes a motor 201 and two drive shafts 202. The two drive shafts 202 are installed between the two side plates 101, and the support roller 103 is located between the two drive shafts 202. The motor 201 is fixed on the outer wall of the side plate 101, and its movable end is connected to the end of one drive shaft 202. The cross-section of the drive shaft 202 connected to the motor 201 is polygonal.

[0046] The conveying unit includes a fixed conveyor belt 301 and a movable conveyor belt 302 respectively fitted onto the support roller 103. The two ends of the fixed conveyor belt 301 are respectively wound around the two drive shafts 202 (the two ends of the fixed conveyor belt 301 have transmission rollers, which are fitted and fixed on the drive shafts 202 and cannot slide horizontally). The movable conveyor belt 302 includes a belt 3021 and two conveyor rollers 3022. The belt 3021 is fitted onto the support roller 103. The width of the belt 3021 is smaller than the width of the fixed conveyor belt 301, and the width of the two belts 3021 plus the width of the fixed conveyor belt 301 is smaller than the length of the drive shaft 202. The two ends of the belt 3021 are respectively wound around the two conveyor rollers 3022. The inner side of each of the two conveyor rollers 3022 is fixed with a bushing 3023. The two ends of the bushing 3023 extend beyond the conveyor rollers 3022, and the bushing 3023 is slidably fitted onto the drive shaft 202.

[0047] The adjustment unit includes a drive assembly and a connector. The connector is a U-shaped bracket 401, with both ends of the U-shaped bracket 401 connected to the bushings 3023 on both sides. The drive assembly includes a turntable 403 and a bidirectional screw 402. The bidirectional screw 402 is rotatably mounted between the two side plates 101. The turntable 403 is fixed to the end of the bidirectional screw 402. The U-shaped bracket 401 is threaded onto the bidirectional screw 402.

[0048] The guide unit includes multiple mounting rods 501 spaced apart on the bottom inner side of the U-shaped bracket 401. A guide roller 502 is rotatably mounted on the top of the mounting rod 501. The top edge of the guide roller 502 is higher than the top edge of the belt 3021, and the bottom edge of the guide roller 502 is lower than the top edge of the belt 3021.

[0049] The scraping unit includes a pole 601 and a cleaning plate 602. The pole 601 is fixed to the side plate 101, and the cleaning plate 602 is fixed to the side wall of the pole 601. The bottom of the cleaning plate 602 has bristles. The cleaning plate 602 is arranged at an angle, and the distance between the bottom of the cleaning plate 602 and the printing machine body 102 is less than the distance between the top of the cleaning plate 602 and the printing machine body 102.

[0050] The connector, guide unit, and movable conveyor belt 302 are arranged in two sets and symmetrically distributed on both sides of the fixed conveyor belt 301. A scale 104 is fixed on the inner side of the two side plates 101 away from the printing machine body 102, and the side wall of the U-shaped bracket 401 corresponds to the scale 104.

[0051] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A printing apparatus for the surface of packaging cardboard, characterized in that: include Two side plates are symmetrically arranged, and multiple support rollers are arranged at intervals between the two side plates. A printing machine body is mounted on the side plates. The drive unit includes a motor and two drive shafts. The two drive shafts are installed between the two side plates, and the support roller is located between the two drive shafts. The motor is fixed to the outer wall of the side plate, and its movable end is connected to the end of one of the drive shafts. The conveying unit includes a fixed conveyor belt and a movable conveyor belt respectively sleeved on the support roller. The two ends of the fixed conveyor belt are respectively wound around the two drive shafts, and the two ends of the movable conveyor belt are respectively slidably sleeved on the two drive shafts. The adjustment unit includes a drive assembly and a connector, the connector being connected to the movable conveyor belt, and the drive assembly being used to control the distance of the connector relative to the fixed conveyor belt. A guide unit is mounted on the connector and located on the side of the movable conveyor belt away from the fixed conveyor belt.

2. The packaging paperboard surface printing apparatus as described in claim 1, characterized in that: The drive shaft connected to the motor has a polygonal cross-section.

3. The packaging paperboard surface printing apparatus as described in claim 2, characterized in that: The movable conveyor belt includes a belt and two conveyor rollers. The belt is sleeved on the support roller, and the two ends of the belt are respectively wound around the two conveyor rollers. A bushing is fixed on the inner side of each of the two conveyor rollers. The bushing is slidably fitted on the drive shaft, and the connecting member is rotatably connected to the bushing.

4. The packaging paperboard surface printing apparatus as described in claim 3, characterized in that: The connector is a U-shaped bracket, with both ends of the U-shaped bracket connected to the bushings on both sides. The guide unit is installed at the bottom inside the U-shaped bracket, and the top edge of the guide unit is higher than the top edge of the belt.

5. The packaging paperboard surface printing apparatus as described in claim 4, characterized in that: The drive assembly includes a turntable and a bidirectional screw. The bidirectional screw is rotatably mounted between the two side plates. The turntable is fixed to the end of the bidirectional screw. The U-shaped bracket is threaded onto the bidirectional screw.

6. The packaging paperboard surface printing apparatus as described in claim 4, characterized in that: The guiding unit includes a plurality of mounting rods spaced apart on the inner bottom of the U-shaped bracket. The mounting rods and the support rollers are distributed alternately. A guide roller is rotatably mounted on the top of the mounting rod. The top edge of the guide roller is higher than the top edge of the belt, and the bottom edge of the guide roller is lower than the top edge of the belt.

7. The packaging paperboard surface printing apparatus as described in claim 1, characterized in that: It also includes a scraping unit, which includes a pole and a cleaning plate. The pole is fixed to the side plate, and the cleaning plate is fixed to the side wall of the pole. The bottom of the cleaning plate has bristles.

8. The packaging paperboard surface printing apparatus as described in claim 7, characterized in that: The cleaning plate is arranged at an angle.

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