A gravure embossing integrated machine

Abstract

This invention discloses an integrated gravure printing and embossing machine, comprising a machine body, a gravure printing roller assembly on one side of the machine body, and an embossing mechanism on the other side. The embossing mechanism includes an extension plate horizontally disposed on one side of the machine body, with a pressure roller movably mounted on the extension plate. A bracket detachably connected to the machine body is connected below the extension plate, and an embossing roller for use with the pressure roller is detachably mounted on the bracket. This invention integrates an embossing mechanism on a gravure printing machine, ensuring printing quality while simultaneously performing embossing processing during printing and output. Two processes are completed on a single machine, improving production efficiency, reducing space requirements, and lowering costs.

Description

Technical Field

[0001] This invention relates to the field of printing technology, and in particular to an integrated gravure embossing machine. Background Technology

[0002] Gravure printing and embossing are two processes in printing. Currently, most printing is done by printing the gravure material first, and then transferring the printing press to an embossing machine for embossing. This process has a long cycle and the second embossing is difficult to position, which can easily cause large deviations. Adjusting these deviations also reduces processing efficiency. Some printers install an embossing machine directly at the output end of the gravure printing machine to achieve continuous processing. This setup requires a higher investment and also occupies a lot of factory space. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide an integrated gravure and embossing machine that is suitable for shallow embossing and can improve the efficiency of gravure printing and embossing.

[0004] To solve the above-mentioned technical problems, the present invention provides a gravure embossing integrated machine, comprising a machine body, a gravure wheel assembly on one side of the machine body, and an embossing mechanism on the other side. The embossing mechanism includes an extension plate horizontally disposed on one side of the machine body, a linear motor connected to a PLC controller on the extension plate, the output end of the linear motor extending vertically downward and connected to a connecting rod, a lower pressure plate connected to the connecting rod, a rotating shaft rotatably passing through the lower pressure plate, and a pressure roller sleeved on the rotating shaft; a code disk is provided at one end of the rotating shaft, and a photoelectric sensor connected to the PLC controller is provided on the extension plate at a position corresponding to the code disk.

[0005] Below the extension plate is a bracket that is detachably connected to the machine body, and on the bracket is a detachably mounted embossing roller that works in conjunction with the pressure roller.

[0006] By adopting the above structure and setting the embossing mechanism on the body of the gravure printing machine, the product turnover links are reduced and synchronous debugging is also convenient. Since it is suitable for shallow embossing processing, the processing pressure of the embossing mechanism does not need to be very high. It is only necessary for the pressure roller and the embossing roller to meet the required gap for embossing. At the same time, the detachable bracket and embossing roller make the embossing mechanism very convenient to disassemble and assemble. It can realize single-process processing of gravure printing as well as simultaneous processing of gravure printing and embossing. That is, the processing of the two processes is combined into one process equipment. The embossing processing can be completed on the gravure printing machine, which greatly reduces the processing space occupied by a single process and saves production costs. The structure is simple and compact and easy to operate.

[0007] To facilitate the assembly and disassembly of the embossing roller, preferably, two side plates are symmetrically arranged on the bracket, each side plate has a mounting hole, and a connecting shaft is provided between the two mounting holes. The embossing roller is sleeved on the connecting shaft, and the two ends of the connecting shaft are respectively sleeved in the mounting holes at the corresponding ends. One end of the connecting shaft is provided with a locking shaft head, and a bearing is embedded in the locking shaft head. One end of the connecting shaft is sleeved on the bearing, and the locking shaft head is screwed and fixed to the side plate at the corresponding end. The inner side wall of the locking shaft head abuts and is fixed to the outer side wall of the side plate.

[0008] To facilitate the movement of the pressure roller, preferably, a limiting block is provided at each end of the bracket corresponding to the protrusion position of the rotating shaft. Each limiting block is provided with a groove arranged along the axial direction of the rotating shaft, and the bottom of the lower pressure plate is adapted to the groove shape.

[0009] To simplify the structure and facilitate installation, preferably, a cylinder connected to the PLC controller is provided at the position corresponding to the limit block on the side plate, and the output end of the corresponding cylinder is connected to the limit block.

[0010] To simplify the installation structure, preferably, the gravure roller assembly includes a printing roller and an auxiliary roller mounted on the machine body, and a conveying roller mounted in the printing output direction. One end of the printing roller is connected to the output end of a power motor, and the printing roller and the auxiliary roller rotate in close contact with each other.

[0011] To facilitate installation and ensure the stability of the connection, preferably, a fixing block is hinged to the side plate, a fixing hole is provided on the fixing block, and a threaded hole is provided on the body at the position corresponding to the fixing hole. A locking bolt is inserted into the fixing hole and screwed into the threaded hole to fix the bracket to the body.

[0012] To facilitate disassembly and relocation, it is preferable that the bracket is provided with casters.

[0013] Beneficial effects: This invention sets up an embossing mechanism on a gravure printing machine, which ensures printing quality while simultaneously achieving embossing processing during printing and output. Two processes are completed on one piece of equipment, which not only improves production efficiency but also reduces space occupation and lowers costs. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 for Figure 1 The left view.

[0017] The meanings of the labels in the attached diagram are as follows:

[0018] Machine body -1; extension plate -10; pressure roller -11; linear motor -12; connecting rod -13; lower pressure plate -14;

[0019] Embossing roller-2; bracket-20; fixing block-201; fixing hole-202; roller-203; connecting shaft-21; locking shaft head-22; side plate-23; limiting block-24; groove-25; cylinder-26;

[0020] Power motor-3; Printing roller-30; Auxiliary roller-31; Encoder disk-4; Photoelectric sensor-40; Detailed Implementation

[0021] Depend on Figures 1 to 2 As shown, the present invention includes a machine body 1, an intaglio printing wheel set is provided on one side of the machine body 1, and an embossing mechanism is provided on the other side. The embossing mechanism includes an extension plate 10 horizontally arranged on one side of the machine body 1, and a pressure roller 11 is movably arranged on the extension plate 10. A bracket 20 is provided below the extension plate 10 and is detachably connected to the machine body 1. An embossing roller 2 that cooperates with the pressure roller 11 is detachably arranged on the bracket 20.

[0022] Specifically, a linear motor 12 connected to a PLC controller is provided on the extension plate 10. The output end of the linear motor 12 extends vertically downward and is connected to a connecting rod 13. A lower pressure plate 14 is connected to the connecting rod 13. A rotating shaft is rotatably passed through the lower pressure plate 14, and a pressure roller 11 is sleeved on the rotating shaft.

[0023] Two side plates 23 are symmetrically arranged on the bracket 20. Each side plate 23 has a mounting hole. A connecting shaft 21 is provided between the two mounting holes. An embossing roller 2 is sleeved on the connecting shaft 21. The two ends of the connecting shaft 21 are respectively sleeved in the mounting holes at the corresponding ends. One end of the connecting shaft 21 is provided with a locking shaft head 22. A bearing is embedded in the locking shaft head 22. One end of the connecting shaft 21 is sleeved on the bearing. The locking shaft head 22 is screwed and fixed to the side plate 23 at the corresponding end. The inner side wall of the locking shaft head 22 abuts and is fixed to the outer side wall of the side plate 23.

[0024] A limiting block 24 is movably provided at each of the two protruding positions of the rotating shaft on the bracket 20. Each limiting block 24 is provided with a groove 25 arranged along the axial direction of the rotating shaft. The bottom of the lower pressure plate 14 is adapted to the groove shape of the groove 25. A cylinder 26 connected to the PLC controller is provided at the position of the limiting block 24 on the side plate 23. The output end of the cylinder 26 at the corresponding end is connected to the limiting block 24.

[0025] A code disk 4 is provided at one end of the connecting shaft 21, and a photoelectric sensor 40 connected to the PLC controller is provided on the extension plate 10 at the position corresponding to the code disk 4.

[0026] The gravure printing roller assembly includes a printing roller 30 and an auxiliary roller 31 mounted on the machine body 1, and a conveying roller mounted in the printing output direction. One end of the printing roller 30 is connected to the output end of the power motor 3, and the printing roller 30 and the auxiliary roller 31 rotate in close contact with each other.

[0027] A fixing block 201 is hinged to the side plate 23. A fixing hole 202 is provided on the fixing block 201. A threaded hole is provided on the body 1 at the position corresponding to the fixing hole 202. A locking bolt is inserted into the fixing hole 202 and the locking bolt is screwed into the threaded hole to fix it so that the bracket 20 is connected and fixed to the body 1. A roller 203 is provided on the bracket 20.

[0028] The working principle of this invention is as follows:

[0029] like Figures 1 to 2 As shown, in order to ensure processing stability, four linear motors 12 are symmetrically arranged on the extension plate 10. The output ends of the two linear motors 12 at the same end extend vertically downward and are connected to connecting rods 13. A lower pressure plate 14 is connected to the two connecting rods 13 at the same end. A rotating shaft is rotatably passed through the two lower pressure plates 14, and a pressure roller 11 is sleeved on the rotating shaft.

[0030] Before use, push the bracket 20 with rollers 203 to the bottom of the extension plate 10, insert the locking bolt into the fixing hole 202, and screw the locking bolt into the threaded hole to fix the bracket 20 to the machine body 1; then the PLC controller starts the linear motor 12, which synchronously drives the connecting rod 13 and the pressure roller 11 to move down. It should be noted that, in order to simplify the structure, the groove 25 on the limit plate 24 is an arc-shaped groove. Combined with the embossing processing requirements, adjust the gap between the pressure roller 11 and the embossing roller 2. After adjusting the gap, the lower end of the lower pressure plate 14 is curved. Based on the surface, and considering the processing requirements of embossing and the characteristics of the product (due to its applicability to shallow embossing, the applicable products are relatively thin), in order to prevent the pressure roller 11 from damaging the product due to too small a gap, the PLC controller starts the cylinder 26, which moves a certain distance upward in the vertical direction, and leaves a gap between the bottom of the groove 25 on the limit plate 24 and the lower curved surface of the lower pressure plate 14. This gap is the error distance required for processing. When the lower ends of the lower pressure plates 14 at both ends are completely in contact with the bottom of the groove 25, it is the limit position of embossing processing. At this time, the embossing depth is the maximum but the product will not be damaged.

[0031] When in use, start the power motor 3 and make the printing roller 30 and the auxiliary roller 31 press against each other to squeeze the product. During rotation, the product is printed with concave texture and is driven to move towards the embossing roller 11. Finally, under the pressure of the pressure roller 11 and the embossing roller 2, the product is processed with shallow embossing.

[0032] During processing, if the squeezing pressure between the pressure roller 11 and the embossing roller 2 decreases (i.e., the gap increases), the rotational resistance decreases, and the rotational speed of the embossing roller 2 will increase. At this time, the interval signal frequency of the code disk 4 increases. This signal change is transmitted to the PLC controller by the photoelectric sensor 40, and the PLC controller sends a start command to the linear motor 12, causing the connecting rod 13 to move down, which synchronously drives the lower pressure plate 14 and the pressure roller 11 to move down, adjusting the gap between the pressure roller 11 and the embossing roller 2. When the interval signal frequency of the code disk 4 returns to the initial value, this frequency signal change is again transmitted to the PLC controller by the photoelectric sensor 40, and the PLC controller sends a stop command to the linear motor 12. This process continues until the curved surface at the lower end of the lower pressure plate 14 contacts the bottom of the groove 25, at which point the gap can no longer be adjusted. At this point, the pressure roller 11 or the embossing roller 2 should be checked and replaced.

[0033] It should be noted that since the connecting shaft 21 is positioned by the inner wall of the screw-locking shaft head 22 abutting against the outer wall of the side plate 23, and the embossing roller 2 is sleeved on the connecting shaft 21, replacing the embossing roller 2 only requires loosening the locking shaft head 22 and removing the connecting shaft 21 sleeved on the bearing to easily replace the embossing roller 2.

Claims

1. A gravure embossing integrated machine, characterized in that: The machine includes a body (1), a gravure wheel set is provided on one side of the body (1), and an embossing mechanism is provided on the other side. The embossing mechanism includes an extension plate (10) horizontally arranged on one side of the body (1). A linear motor (12) connected to a PLC controller is provided on the extension plate (10). The output end of the linear motor (12) extends vertically downward and is connected to a connecting rod (13). A lower pressure plate (14) is connected to the connecting rod (13). A rotating shaft is rotatably passed through the lower pressure plate (14), and a pressure roller (11) is sleeved on the rotating shaft. Below the extension plate (10) is a bracket (20) detachably connected to the machine body (1). A texturing roller (2) for use with the pressure roller (11) is detachably mounted on the bracket (20). Two side plates (23) are symmetrically arranged on the bracket (20). Each side plate (23) has a mounting hole. A connecting shaft (21) is provided between the two mounting holes. The texturing roller (2) is sleeved on the connecting shaft (21). Both ends of the connecting shaft (21) are respectively fitted into the mounting holes at their corresponding ends. One end of the connecting shaft (21) is provided with a locking shaft head (22), and a bearing is embedded in the locking shaft head (22). One end of the connecting shaft (21) is sleeved on the bearing, and the locking shaft head (22) is screwed and fixed on the side plate (23) at the corresponding end. The inner wall of the locking shaft head (22) abuts and is fixed to the outer wall of the side plate (23). One end of the connecting shaft (21) is provided with a code disk (4), and a photoelectric sensor (40) connected to the PLC controller is provided on the extension plate (10) at the position corresponding to the code disk (4).

2. The gravure embossing integrated machine as described in claim 1, characterized in that: A limiting block (24) is movably provided at each end of the bracket (20) corresponding to the protrusion position of the connecting shaft (21). Each limiting block (24) is provided with a groove (25) arranged along the axial direction of the connecting shaft (21). The bottom of the lower pressure plate (14) is adapted to the groove shape of the groove (25).

3. The gravure embossing integrated machine as described in claim 2, characterized in that: On the side plate (23), at the position corresponding to the limit block (24), there is a cylinder (26) connected to the PLC controller, and the output end of the cylinder (26) at the corresponding end is connected to the limit block (24).

4. The gravure embossing integrated machine as described in claim 1, characterized in that: The gravure printing roller assembly includes a printing roller (30) and an auxiliary roller (31) mounted on the machine body (1), and a conveying roller mounted in the direction of printing output. One end of the printing roller (30) is connected to the output end of the power motor (3), and the printing roller (30) and the auxiliary roller (31) rotate in close contact with each other.

5. The gravure embossing integrated machine as described in claim 1, characterized in that: A fixing block (201) is hinged on the side plate (23), and a fixing hole (202) is provided on the fixing block (201). A threaded hole is provided on the body (1) at the position corresponding to the fixing hole (202). A locking bolt is inserted into the fixing hole (202) and the locking bolt is screwed into the threaded hole to fix it so that the bracket (20) is connected and fixed to the body (1).

6. The gravure embossing integrated machine as described in claim 1, characterized in that: Rollers (203) are provided on the bracket (20).

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