A plastic hollow board printing machine

Abstract

This invention discloses a plastic hollow board printing machine, comprising: a frame, a printing device, a tracking cylinder, and a pressing device. A guide rail is provided on the upper surface of the frame, and the printing device and the pressing device are slidably mounted on the guide rail. The tracking cylinder is located on the lower surface of the frame, and its drive end is connected to the printing device and the pressing device via a base plate. When the pressing device presses down on the plastic hollow board, the tracking cylinder drives the printing device and the pressing device to move along the production direction of the plastic hollow board. Simultaneously, the printing device completes the printing of the plastic hollow board. This invention achieves continuous printing of plastic hollow boards without manual operation, has a high degree of automation, greatly improves production efficiency, saves labor costs, and improves printing efficiency and accuracy.

Description

Technical Field

[0001] This invention relates to the field of hollow board printing technology, and in particular to a plastic hollow board printing machine. Background Technology

[0002] Plastic hollow board is a new type of material that is pollution-free, waterproof, and shockproof. Compared with cardboard structure products, it has advantages such as moisture resistance and corrosion resistance.

[0003] Plastic hollow sheets can be used in various industries such as electronics, packaging, machinery, light industry, postal services, food, medicine, pesticides, home appliances, advertising, decoration, cultural products, optoelectronic technology, bioengineering, and pharmaceuticals. It is a new type of environmentally friendly packaging material.

[0004] In practical applications, it is usually necessary to print on plastic hollow boards to indicate product, trademark, and usage information. The traditional method is to print manually after the plastic hollow boards are cut. This involves multiple workers using printing templates and brushes to print on each plastic hollow board, which consumes a lot of manpower and time. Moreover, after printing, the plastic hollow boards need to be laid out in the production space to wait for drying, which takes up space and has extremely low production efficiency.

[0005] Existing technology also uses automated independent printing machines to print on plastic hollow boards. Such printing machines require at least one worker to operate. The cut plastic hollow boards are placed into the printing machine, and their position is adjusted by the positioning structure of the printing machine. After printing, the worker takes them out and sends them to the drying equipment, or they are automatically sent to the drying equipment by a conveyor belt.

[0006] The printing machines provided by the existing technology have the following drawbacks: they still require manual operation, have a low degree of automation, and have high labor costs; they have a complex structure, and printing on cut plastic hollow boards requires additional positioning structures and positioning time to ensure printing accuracy, resulting in low printing efficiency and low production efficiency; and they also require additional drying equipment, which increases production costs.

[0007] Therefore, improvements to existing technologies are necessary. Summary of the Invention

[0008] This invention provides a plastic hollow board printing machine to solve the above-mentioned problems.

[0009] One technical solution adopted by the present invention is to provide a plastic hollow board printing machine, including: a frame, a printing device, a tracking cylinder, and a pressing device. The upper surface of the frame is provided with a guide rail, and the printing device and the pressing device are slidably mounted on the guide rail. The tracking cylinder is mounted on the lower surface of the frame, and the driving end of the tracking cylinder is connected to the printing device and the pressing device through a base plate. When the pressing device presses down on the hollow board, the tracking cylinder drives the printing device and the pressing device to move along the production direction of the plastic hollow board. At the same time, the printing device completes the printing of the plastic hollow board.

[0010] Furthermore, the printing apparatus includes a printing support assembly, a printing template, a template driving assembly, printing rollers, and a roller driving assembly. The printing support assembly is mounted on a base plate. The template driving assembly is mounted on the printing support assembly via a driving cylinder. The printing template is mounted on the template driving assembly. The printing rollers are mounted above the printing template and connected to the roller driving assembly via roller shafts. The roller driving assembly is connected to the template driving assembly via a crossbeam. The crossbeam is slidably positioned relative to the template driving assembly. When the printing template presses against the hollow plate, the crossbeam drives the printing rollers along the printing direction to complete the printing process.

[0011] Furthermore, the printing support assembly includes a support plate and auxiliary rollers disposed at both ends of the support plate. There are two sets of driving cylinders disposed at the four corners of the support plate, and their driving ends are connected to the template driving assembly. The driving ends of the driving cylinders are also provided with buffer springs to help the printing template retract.

[0012] Furthermore, the support plate includes a support main plate, a support pad, and a roller connecting plate. The support pad is positioned above the support main plate, and four roller connecting plates are symmetrically arranged at the left and right ends of the support main plate. The auxiliary rollers are positioned on the roller connecting plates and are slightly higher than the support pad. When the printing template leaves the hollow plate, the hollow plate moves smoothly away from the support pad under the action of the traction machine.

[0013] Furthermore, the template driving assembly includes two symmetrically arranged left and right driving frames. A template connecting frame is provided on the inner side of the driving frame. The printing template is detachably mounted on the template connecting frame. Different content can be printed by replacing the printing template. The two ends of the crossbeam are slidably mounted on the two driving frames, and the two ends move synchronously to complete the printing.

[0014] Furthermore, the drive frame is set at the drive end of the drive cylinder via a connecting block, and a buffer pad is also provided below the connecting block. When the printing template presses down on the hollow plate, the buffer pad presses down on the support plate.

[0015] Furthermore, the roller drive assembly includes two symmetrically arranged left and right sets of roller frames. Each roller frame includes an upper connector and a lower connector. The upper connector is mounted on a crossbeam, and the lower connector is connected to the upper connector via several auxiliary springs. The roller shaft passes through the lower connector. When the printing template leaves the hollow plate, it drives the printing roller to move upward and compress the spring. Conversely, the spring rebounds, causing the printing roller to press against the printing template.

[0016] Furthermore, the upper connector is slidably mounted on the crossbeam, and can be adapted to different printing requirements by adjusting the spacing between the two roller frames and replacing the corresponding printing templates and printing rollers.

[0017] Furthermore, there are two sets of roller drive assemblies, and correspondingly, there are two crossbeams. The two crossbeams are slidably mounted on the template drive assembly. When the pressing device presses down on the hollow plate, the two sets of roller drive assemblies simultaneously print on the printing template.

[0018] Furthermore, when the clamping device presses down on the hollow board, the driving speed of the tracking cylinder is consistent with the traction speed of the hollow board production, so that the printing of the hollow board is adapted to the automated production line of the hollow board.

[0019] The beneficial effects of the plastic hollow board printing machine of the present invention are:

[0020] 1. A tracking cylinder is used to drive the printing device, enabling the printing device to adapt to the traction speed of the plastic hollow board production line. A clamping device is used to keep the hollow board stable, ensuring accurate and clear printing. During production, continuously produced plastic hollow boards can be fed into the printing machine for continuous printing without manual operation. The degree of automation is high, saving labor costs and improving printing efficiency and accuracy.

[0021] 2. This printing machine has a simple structure and can ensure printing accuracy without the need for additional positioning structures. It has low equipment cost and high production efficiency.

[0022] 3. After printing on the plastic hollow board using this printing device, the hollow board can be dried and cut to the required size. The original production line's drying and cutting equipment can be used. The improvement of the equipment brings about an improvement in the process flow, which greatly improves production efficiency. Attached Figure Description

[0023] Figure 1 This is a front view of a plastic hollow board printing machine at the start of printing according to the first embodiment of the present invention;

[0024] Figure 2 This is a front view of a plastic hollow board printing machine at the end of printing according to the first embodiment of the present invention;

[0025] Figure 3This is a side view of a plastic hollow board printing machine at the end of printing according to the first embodiment of the present invention;

[0026] Figure 4 This is a front view of the printing apparatus at the start of printing in the first embodiment of the present invention;

[0027] Figure 5 This is a front view of the printing apparatus in the first embodiment of the present invention at the end of printing;

[0028] The components in the attached diagram are labeled as follows: 1. Frame, 2. Guide rail, 3. Printing support assembly, 4. Printing template, 5. Template drive assembly, 6. Printing roller, 7. Roller drive assembly, 8. Crossbeam, 9. Tracking cylinder, 10. Pressing device, 11. Plastic hollow board, 31. Support main board, 32. Support pad, 33. Roller connecting plate, 34. Auxiliary roller, 51. Drive cylinder, 52. Drive frame, 53. Template connecting frame, 71. Upper connector, 72. Auxiliary spring, 73. Lower connector, 321. Buffer spring, 511. Connecting block. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "horizontal", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0031] Please see Figures 1 to 5 The first embodiment of the present invention provides a plastic hollow board printing machine, including: a frame 1, a guide rail 2 is provided on the upper surface of the frame 1, and a printing device (3-8) and a pressing device 10 are provided on the guide rail 2. The former is used to complete the printing of the plastic hollow board 11 at a preset position, and the latter is used to press the plastic hollow board 11 to make its position stable relative to the former.

[0032] A tracking cylinder 9 is installed on the lower surface of the frame 1. The tracking cylinder 9 is horizontally positioned, with one end fixed to the inner side of the frame 1 and the other end serving as the drive end. The drive end is connected to the printing device (3-8) and the clamping device 10 via a base plate (not labeled). Before printing begins, the drive end is in a retracted state, and the printing device and the clamping device are located on the right side of the guide rail. When the plastic hollow board reaches the preset printing position, the clamping device clamps the plastic hollow board, while the drive end extends to the left, and the printing device performs printing. The driving speed of the drive end is consistent with the traction speed of the plastic hollow board production. After printing is completed, the printing device and the clamping device release the plastic hollow board and return to the initial position under the drive of the drive end, waiting for the next printing position.

[0033] The printing apparatus (3-8) includes a printing support assembly 3 mounted on a base plate, a template drive assembly 5 mounted on the printing support assembly 3, a printing template 4 mounted on the template drive assembly 5, two crossbeams 8 slidably mounted on the template drive assembly 5, two sets of roller drive assemblies 7 symmetrically mounted on each crossbeam 8, and printing rollers 6 mounted on each set of roller drive assemblies 7.

[0034] The template driving assembly 5 is mounted on the printing support assembly 3 via the driving cylinder 51. When the driving end of the driving cylinder 51 extends, the printing template 4 and the printing roller 6 move away from the plastic hollow plate 11. When the driving end retracts, the printing template 4 presses the plastic hollow plate 11 onto the printing support assembly 3, and the crossbeam 8 moves back and forth in the direction perpendicular to the plastic hollow plate, driving the printing roller 6 to complete the printing.

[0035] The printing support assembly 3 includes a main support plate 31, a support pad 32 disposed on the upper surface of the main support plate 31, roller connecting plates 33 disposed at both ends of the main support plate 31, and auxiliary rollers 34 disposed on the roller connecting plates 33. There are four roller connecting plates 33 symmetrically disposed at the left and right ends of the main support plate 31. Each of the left and right ends is provided with an auxiliary roller 34 which is slightly higher than the support pad 32. When the printing template 4 leaves the plastic hollow plate 11, the plastic hollow plate 11 will float relative to the support pad 32 and can move smoothly along the auxiliary rollers 34 under the action of the traction machine.

[0036] The template driving assembly 5 includes two symmetrically arranged left and right driving frames 52. Correspondingly, there are four driving cylinders 51, divided into two groups, which are used to control the lifting and lowering of the two groups of driving frames 52. The four driving cylinders 51 are respectively set on the four corners of the supporting main board 31. The driving end of the driving cylinder 51 is connected to the driving frame 52 through the connecting block 511. A buffer pad (not labeled) is also provided below the connecting block 511. When the printing template 4 presses against the plastic hollow board 11, the buffer pad presses on the supporting pad 32.

[0037] Specifically, the drive end of the drive cylinder 51 is also equipped with a buffer spring 321 to help the printing template 4 retract.

[0038] Specifically, the template connecting frame 53 is set inside the drive frame 52, and the printing template 4 is detachably set on the template connecting frame 53. Different content can be printed by replacing the printing template 4.

[0039] Each set of roller drive components 7 includes two sets of roller frames (not labeled) arranged symmetrically on the left and right. The roller frames include an upper connector 71, an auxiliary spring 72, and a lower connector 73. The upper and lower connectors (71, 73) are connected by four auxiliary springs 72 arranged in a cube. The upper connector 71 is slidably mounted on the crossbeam 8. Different printing requirements can be adapted by adjusting the distance between the two roller frames and replacing the corresponding printing template 4 and printing roller 6. The lower connector 73 is used to fix the printing roller 6. That is, the printing roller 6 is mounted between the two lower connectors 73 through the roller shaft (not labeled) and is located above the printing template 4.

[0040] Specifically, when the printing device (3-8) and the pressing device 10 are both in the initial position, the drive cylinder 51 is in the extended state, the printing template 4 presses the printing roller 6 upward, and the auxiliary spring 72 is compressed. When the drive cylinder 51 retracts, the printing template 4 presses the plastic hollow plate 11, and the auxiliary spring 72 rebounds a certain distance so that the printing roller 6 presses on the printing template 4, ensuring stable contact between the printing roller 6 and the printing template 4.

[0041] The pressing device 10 includes an upper pressure plate, an upper pressure plate connecting frame, a lower support plate, and a bracket. The upper pressure plate connecting frame is fixed on the base plate. The upper pressure plate is mounted on the upper pressure plate connecting frame by several upper drive cylinders. The lower support plate is mounted on the base plate by the bracket. When the drive end of the upper drive cylinder extends, the upper pressure plate moves downward until the plastic hollow plate is pressed tightly onto the lower support plate.

[0042] Specifically, the lower surface of the upper pressure plate is provided with a rubber layer, which does not damage the surface of the plastic hollow board when pressing it down.

[0043] Specifically, the left and right ends of the lower support plate are designed with downward slopes so that when printing is finished and the traction machine pulls the plastic hollow plate away from the printing machine, the lower surface of the plate will not be damaged at both ends.

[0044] The entire printing press also has a corresponding ink system and control system for printing, pressing, and tracking cylinders, which ensures that the actions of each structure are coordinated.

[0045] Specifically, depending on the actual printing width and content, the positions of the two printing rollers can be adjusted to achieve printing in the same direction or printing opposite each other. The number of rollers can be adjusted to shorten the printing time and match the actual production rhythm.

[0046] The beneficial effects of the plastic hollow board printing machine of the present invention are:

[0047] 1. A tracking cylinder is used to drive the printing device, enabling the printing device to adapt to the traction speed of the plastic hollow board production line. A clamping device is used to keep the hollow board stable, ensuring accurate and clear printing. During production, continuously produced plastic hollow boards can be fed into the printing machine for continuous printing without manual operation. The degree of automation is high, saving labor costs and improving printing efficiency and accuracy.

[0048] 2. This printing machine has a simple structure and can ensure printing accuracy without the need for additional positioning structures. It has low equipment cost and high production efficiency.

[0049] 3. After printing on the plastic hollow board using this printing device, the hollow board can be dried and cut to the required size. The original production line's drying and cutting equipment can be used. The improvement of the equipment brings about an improvement in the process flow, which greatly improves production efficiency.

[0050] 4. By utilizing the structural cooperation between the drive cylinder, the template drive assembly, and the roller drive assembly, the printing template and the printing roller are linked together. The lifting and lowering of both can be achieved by controlling only the drive cylinder. The auxiliary spring ensures the contact between the two and, together with the buffer spring, provides cushioning for this lifting structure.

[0051] 5. The height coordination of the auxiliary rollers and support plate helps the plastic hollow board to leave the printing machine smoothly, which is beneficial for feeding after printing.

[0052] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A plastic hollow board printing machine, characterized in that, include: The machine includes a frame, a printing device, a tracking cylinder, and a pressing device. The upper surface of the frame is provided with a guide rail, and the printing device and the pressing device are slidably mounted on the guide rail. The tracking cylinder is located on the lower surface of the frame, and the drive end of the tracking cylinder is connected to the printing device and the pressing device through a base plate. When the pressing device presses down on the plastic hollow board, the tracking cylinder drives the printing device and the pressing device to move along the production direction of the plastic hollow board. At the same time, the printing device completes the printing of the plastic hollow board. The printing apparatus includes a printing support assembly, a printing template, a template driving assembly, printing rollers, and a roller driving assembly. The printing support assembly is mounted on a base plate. The template driving assembly is mounted on the printing support assembly via a driving cylinder. The printing template is mounted on the template driving assembly. The printing rollers are mounted above the printing template and connected to the roller driving assembly via roller shafts. The roller driving assembly is connected to the template driving assembly via a crossbeam. The crossbeam is slidably positioned relative to the template driving assembly. When the printing template presses against the plastic hollow plate, the crossbeam drives the printing rollers along the printing direction to complete the printing. The printing support assembly includes a support plate and auxiliary rollers disposed at both ends of the support plate. There are two sets of driving cylinders disposed at the four corners of the support plate. The driving end of the cylinder is connected to the template driving assembly. The driving end of the driving cylinder is also provided with a buffer spring. The support plate includes a main support plate, a support pad, and a roller connecting plate. The support pad is positioned above the main support plate. There are four roller connecting plates, which are symmetrically arranged at the left and right ends of the main support plate. The auxiliary rollers are positioned on the roller connecting plates and are slightly higher than the support pad.

2. A plastic hollow board printing machine according to claim 1, characterized in that, The template driving assembly includes two sets of driving frames arranged symmetrically on the left and right. A template connecting frame is provided on the inner side of the driving frame. The printing template is detachably mounted on the template connecting frame. The two ends of the crossbeam are slidably mounted on the two driving frames.

3. A plastic hollow board printing machine according to claim 2, characterized in that, The drive frame is mounted on the drive end of the drive cylinder via a connecting block, and a buffer pad is also provided below the connecting block.

4. A plastic hollow board printing machine according to claim 1, characterized in that, The roller drive assembly includes two sets of roller frames arranged symmetrically on the left and right. Each roller frame includes an upper connector and a lower connector. The upper connector is mounted on a crossbeam, and the lower connector is connected to the upper connector by several auxiliary springs. The roller shaft passes through the lower connector.

5. A plastic hollow board printing machine according to claim 4, characterized in that, The upper connector is slidably mounted on the crossbeam.

6. A plastic hollow board printing machine according to claim 4, characterized in that, There are two sets of roller drive assemblies, and correspondingly, there are two crossbeams, which are slidably mounted on the template drive assembly.

7. A plastic hollow board printing machine according to claim 1, characterized in that, When the clamping device presses down on the hollow plate, the driving speed of the tracking cylinder is consistent with the traction speed of the hollow plate production.

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