Coating machine with adsorption roller on-line switching mechanism

Abstract

The utility model discloses a coating machine with an adsorption roller on-line switching mechanism, which comprises a rack and a vacuum adsorption roller positioned and arranged on the rack, and further comprises a transition roller arranged on the rack and positioned in front of the vacuum adsorption roller, the transition roller can be selectively located at a first position higher than the vacuum adsorption roller or a second position lower than the vacuum adsorption roller through a switching mechanism; when the transition roller is located at the first position, the base material makes contact with the surface of the transition roller, and the adsorption state of the base material and the vacuum adsorption roller is relieved; and when the transition roller is located at the second position, the base material is in contact with the surface of the vacuum adsorption roller, and the base material is separated from the transition roller. By driving the transition roller to be located at different positions, the base material and the vacuum adsorption roller can be further fixed or stripped, and the base material can directly alternate to the transition roller from the vacuum adsorption roller, so that the coating equipment can flexibly select to alternately use the vacuum adsorption roller or a common roller.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coating, especially with adsorption roller on -line switching mechanism's coating machine. BACKGROUND

[0002] The coating equipment can produce product materials of different specifications, and the tension control of the material is a key factor in the coating process. In order to meet the needs of different specifications of products, the equipment needs to be able to accurately set according to the width, thickness and tension of the required material and other parameters, for example, for thinner or wider substrates, the equipment can adjust the tension control system to ensure that the material maintains uniform tension during the production process, avoiding problems such as wrinkling or deformation.

[0003] In the design of the coating machine, the vacuum adsorption roller is a key component that pulls and controls the tension of the substrate through vacuum adsorption force. The use of vacuum adsorption roller can further improve the stability of the whole machine tension. In some existing coating machine designs, the operation mode of the vacuum adsorption roller may be fixed, that is, it is always enabled or completely disabled, which limits its flexibility under different coating requirements. SUMMARY

[0004] To solve the above technical problems, the utility model provides a coating machine with adsorption roller on -line switching mechanism which can flexibly select and use vacuum adsorption roller or ordinary roller alternately without stopping.

[0005] The technical scheme of the utility model is: a coating machine with adsorption roller on -line switching mechanism, comprising a rack and a vacuum adsorption roller positioned on the rack, further comprising:

[0006] A transition roller is provided on the rack in front of the vacuum adsorption roller, and the transition roller can be selectively positioned at a first position higher than the vacuum adsorption roller or a second position lower than the vacuum adsorption roller through the switching mechanism;

[0007] When the transition roller is in the first position, the substrate contacts the surface of the transition roller and the adsorption state of the substrate and the vacuum adsorption roller is released;

[0008] When the transition roller is in the second position, the substrate contacts the surface of the vacuum adsorption roller, and the substrate is separated from the transition roller.

[0009] Further, the switching mechanism is provided on the rack corresponding to the two ends of the transition roller, each set of switching mechanism comprises a driving assembly, the driving assembly is provided on the rack and located below the transition roller, the transition roller is rotatably connected to the output end of the driving assembly.

[0010] Further, each group of the switching mechanism further comprises a group of guide rails fixed on the two inner side wall plates of the rack; the driving assembly comprises a cylinder body fixed on the rack and a push rod fixedly connected at the output end of the cylinder body and parallel to the guide rails, a slider seat is fixedly arranged on the top of the push rod, a guide roller support is arranged on the slider seat, a slider is fixedly connected at the bottom of the slider seat, and the slider is in sliding connection with the guide rails; and the transition roller is rotatably connected between the two guide roller supports on the two groups of guide rails.

[0011] Further, the vacuum adsorption roller is provided with a normal pressure cavity and a negative pressure cavity providing a vacuum environment in the axial direction, the outer surface of the vacuum adsorption roller is provided with a plurality of air holes in communication with the negative pressure cavity, and the negative pressure cavity is in communication with a vacuum pump.

[0012] Further, the vacuum adsorption roller comprises a main roller fixed relative to the rack and an outer roller drum capable of rotating relative to the main roller, the main roller is hollow inside and the inside of the main roller is in communication with the vacuum pump, and a part of the region between the peripheral wall of the main roller and the inner peripheral wall of the outer roller drum forms the negative pressure cavity arranged in the axial direction, a plurality of through holes arranged at intervals in the axial direction are formed in the peripheral wall of the main roller and in communication with the inside of the main roller and the negative pressure cavity, and a plurality of air holes are formed in the outer roller drum and in communication with the region formed between the outer roller drum and the main roller and the outside.

[0013] Further, two baffles are fixed on the outer peripheral surface of the main roller, each baffle is arranged in the axial direction of the main roller and has the same length as the main roller, the two baffles are arranged at intervals in the radial direction of the main roller, and the side, away from the main roller, of the two baffles abuts against the inner side wall of the outer roller drum; the two baffles divide the region between the peripheral wall of the main roller and the inner peripheral wall of the outer roller drum into the negative pressure cavity and the normal pressure cavity.

[0014] Further, the plurality of air holes are distributed in the form of a circular ring concentric with the radial cross section of the main shaft on the peripheral wall of the outer roller drum.

[0015] Further, the circular ring-shaped air holes are arranged at the central position in the length direction of the outer roller drum, and the air holes are provided with at least one ring.

[0016] Further, the coating machine further comprises a driving roller and a transition roller arranged on the rack, and the substrate is wound around the driving roller and the transition roller and then wound around the transition roller or the vacuum adsorption roller.

[0017] The beneficial technical effects of the present application are as follows:

[0018] 1. The base material can be further fixed or peeled off by the lifting and lowering action of the transition roller, and the base material can be directly transferred from the vacuum suction roller to the transition roller, so that the coating equipment can flexibly select the vacuum suction roller or the ordinary roller for alternating use without stopping to meet the different base material characteristics and coating requirements, adapt to various materials and process requirements, and therefore improve the working efficiency and continuous operation ability of the coating machine.

[0019] 2. When the vacuum suction pump is working, the negative pressure is formed in the cavity of the main roller, the base material is adsorbed on the main roller, and the tension of the base material is interrupted, so that the tension of each section of the base material is stable, thereby preventing the base material from being stretched or loosened. Because the partition plate in the cavity divides the cavity into a normal pressure cavity and a negative pressure cavity along the axial direction, the required tension difference can be achieved when the vacuum suction roller conveys the coiled material even if a small wrap angle is used. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structure schematic view of the use state of the vacuum suction roller of the utility model;

[0021] Figure 2 is a structure schematic view of the non-use state of the vacuum suction roller of the utility model;

[0022] Figure 3 is an axial cross-sectional schematic view of the vacuum suction roller in the utility model;

[0023] Figure 4 is a structure schematic view of the vacuum suction roller in the utility model;

[0024] Figure 5 is Figure 4 a cross-sectional schematic view of A-A in the utility model;

[0025] Figure 6 is a cross-sectional schematic view of the vacuum suction roller in the utility model;

[0026] Figure 7 is a structure schematic view of the on-line switching mechanism of the suction roller in the utility model;

[0027] Figure 8 is Figure 7 an enlarged schematic view of B in the utility model;

[0028] in the drawing,

[0029] 1. frame;

[0030] 21, wallboard; 22, wallboard connecting rod; 23, cylinder fixing seat; 24, guide rail;

[0031] 31, driving roller; 32, transition roller;

[0032] 4. Vacuum adsorption roller; 41. Outer roller; 411. Shaft end sleeve; 412. Bearing 1; 413. Air hole; 414. Bearing 2; 415. Atmospheric pressure chamber; 42. Main roller; 421. Axial air supply pipe; 422. Adsorption roller fixing flange; 423. Adsorption roller locking ring; 424. Sealing plug; 425. Partition plate; 426. Annular wall; 427. Negative pressure chamber; 428. Through hole; 429. Bolt; 43. Vacuum pump; 44. Drive motor; 45. Adsorption roller drive shaft;

[0033] 5. Switching mechanism; 51. Cylinder body; 52. Push rod; 53. Slider; 54. Slider seat; 55. Guide roller support; 56. Transition roller. Detailed Implementation

[0034] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0035] like Figures 1-3 As shown, a coating machine with an online switching mechanism for the vacuum adsorption roller includes a frame 1 and wall panels 21 disposed on both sides of the frame 1. The vacuum adsorption roller consists of a main roller 42 fixed relative to the wall panel 21 and an outer roller 41 rotatable around the main roller 42. The main roller 42 has a hollow structure, with an axial air supply pipe 421 fixedly installed at one end, communicating with the hollow interior of the main roller 42. The axial air supply pipe 421 passes through the wall panel 21 and is connected to a vacuum pump 43. A suction roller fixing flange 422 and a suction roller locking ring 423 are fixedly installed on the wall panel 21 to fix the axial air supply pipe 421 to the wall panel 21, thereby fixing the main roller 42 relative to the wall panel 21. The end of the main roller 42 away from the axial air supply pipe 421 is sealed by a sealing plug 424.

[0036] A drive motor 44 is fixedly mounted on one of the wall panels 21 of the frame 1. The drive motor 44 drives the outer roller 41 to rotate via a suction roller drive shaft 45. Specifically, the output end of the drive motor is connected to the suction roller drive shaft 45 via a reducer and a coupling. The outer circumference of the end of the suction roller drive shaft 45 near the main roller 42 is fixedly connected to the corresponding end of the outer roller 41. The inner circumference of this end of the suction roller drive shaft 45 is rotatably connected to the main roller 42 via a bearing 412 mounted on the outer circumference of a sealing plug 424. The end of the outer roller 41 near the axial air supply pipe 421 is sealed by a shaft end sleeve 411, and the end of the outer roller 41 away from the axial air supply pipe 421 is sealed by the suction roller drive shaft 45. The suction roller drive shaft 45 is connected to the shaft of the drive motor 44 and is rotatably connected within the wall panel 21 by means of the bearing 414.

[0037] likeFigures 4-6 As shown, two partitions 425 are assembled on the outer circumferential surface of the main roller 42, each of which is arranged along the axial direction of the main roller 42 and has the same length as the main roller 42, and the two partitions 425 are arranged in a radial direction of the main roller 42. One side of each of the two partitions 425 is fixedly connected to the outer wall of the main roller 42 (which can be achieved by fasteners), and the other end of each of the two partitions 425 abuts against the inner wall of the outer roller barrel 41. The gap between the inner circumferential surface of the outer roller barrel 41 and the radially outer end of the partition 425 is at least substantially airtight. A negative pressure cavity 427 is enclosed between the two partitions 425 and the outer circumferential wall of the main roller 42 and the inner circumferential wall of the outer roller barrel 41, as shown in the figure. Figure 3 As shown, an annular wall 426 is fixed to the two ends of the main roller 42, which encloses the negative pressure cavity 427 on both axial end sides. The gap between the inner circumferential surface of the outer roller barrel 41 and the outer circumferential surface of the annular wall 426 is at least substantially airtight. A plurality of through holes 428 are arranged on the circumferential wall of the main roller 42 in the axial direction of the main roller 42, which are in communication with the hollow portion inside the main roller 42. A plurality of air holes 413 are arranged on the circumferential wall of the outer roller barrel 41, which are arranged in the form of a circular ring concentric with the radial cross section of the main shaft, and the circularly arranged air holes can be one ring or multiple rings arranged at intervals. In this embodiment, three rings are arranged.

[0038] The working principle of the vacuum suction roller 4 is as follows: the vacuum suction pump 43 is started, the hollow portion inside the main roller 42 is brought to a negative pressure through the axial gas conveying pipe 421, and then the negative pressure cavity 427 corresponding to the through holes 428 on the main roller 42 is brought to a negative pressure, so that the air holes 413 on the main roller 42 corresponding to the negative pressure cavity 427 are brought to a suction force, which can suck the film material in contact with or near the vacuum suction roller 4 to the surface of the roller. Since the driving motor 44 drives the outer roller barrel 41 to rotate, the air holes 413 arranged in a ring on the outer roller barrel 41 are always in correspondence with the negative pressure cavity 427, so the surface of the outer roller barrel 41 always has a suction force.

[0039] As shown in Figure 1 , 2 , 7, 8, a group of guide rails 24 are fixed to the inner wall of each inner side wall panel 21, the two groups of guide rails 24 are arranged in correspondence, and each group of guide rails 24 includes two straight guide rails 24 arranged in a vertical direction and at intervals.

[0040] The adsorption roller on-line switching mechanism comprises a cylinder body 51 fixed on the inner side of the wall plate 21 and a push rod 52 fixedly connected to the cylinder output shaft and parallel to the guide rail 24, the push rod 52 is fixedly connected with a sliding block 53, the sliding block 53 is slidably connected with the guide rail 24, the top of the sliding block 53 is fixedly connected with a sliding block seat 54, the top of the sliding block seat 54 is fixedly connected with a guide roller support 55, and both ends of the transition roller 56 are rotatably connected to the two guide roller supports 55.

[0041] The implementation principle of the utility model is:

[0042] When the vacuum adsorption roller 4 needs to work, the cylinder in the adsorption roller on-line switching mechanism drives the transition roller 56 to descend, so that the highest part of the roller surface of the transition roller 56 is lower than the highest part of the roller surface of the vacuum adsorption roller 4, the base material directly contacts the vacuum adsorption roller 4, the base material covers the air holes 413 of the negative pressure adsorption area, the base material cooperates with the negative pressure cavity 427 to form the negative pressure adsorption area, and the base material is closely attached to the surface of the vacuum adsorption roller 4, as shown in Figure 1 .

[0043] When the vacuum adsorption roller 4 is not used, the cylinder in the adsorption roller on-line switching mechanism lifts the transition roller 56 to the highest part of the roller surface of the transition roller 56, so that the included angle of the base material surrounded by the vacuum adsorption roller 4 tends to 0°, and the base material is separated from the vacuum adsorption roller 4 and is conveyed by the transition roller 56.

[0044] The above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, it should be indicated that, for ordinary skilled person in the art, on the premise of not departing from the technical principle of the utility model, a plurality of improvements and modifications can be made, and the improvements and modifications should be regarded as the protection scope of the utility model.

Claims

1. A coater with an on-line switching mechanism of suction rolls, comprising a frame (1) and vacuum suction rolls (4) positioned on the frame (1), characterized in that, Also comprising: a transition roller (56) disposed on the frame at the front of the vacuum suction roller (4), and the transition roller (56) can be selectively located at a first position higher than the vacuum suction roller (4) or a second position lower than the vacuum suction roller (4) through a switching mechanism (5); when the transition roller (56) is located at the first position, the substrate contacts the surface of the transition roller (56) and the suction state of the substrate and the vacuum suction roller (4) is released; when the transition roller (56) is located at the second position, the substrate contacts the surface of the vacuum suction roller (4) and the substrate is separated from the transition roller.

2. The coater with an adsorption roller on-line switching mechanism according to claim 1, characterized in that: The switching mechanism (5) is provided on the frame (1) corresponding to the two ends of the transition roller (56), and each set of switching mechanism includes a driving assembly, which is provided on the frame (1) and located below the transition roller, and the transition roller (56) is rotatably connected to the output end of the driving assembly.

3. The coater with an adsorption roller on-line switching mechanism according to claim 2, characterized in that: Each set of the switching mechanism (5) further comprises a set of guide rails (24) fixed on the two inner side wall plates (21) of the frame (1); the driving assembly comprises a cylinder body (51) fixed on the frame (1) and a push rod (52) fixedly connected to the output end of the cylinder body (51) and parallel to the guide rails (24), the top of the push rod (52) is fixedly provided with a slider seat (54), the slider seat (54) is provided with a guide roller support (55), the bottom of the slider seat (54) is fixedly connected with a slider (53), and the slider (53) is slidably connected with the guide rail (24); the transition roller (56) is rotatably connected between the two guide roller supports (55) on the two sets of guide rails (24).

4. The coater with an adsorption roller on-line switching mechanism according to claim 1, characterized in that: The vacuum suction roller (4) is provided with a normal pressure cavity (415) and a negative pressure cavity (427) providing a vacuum environment in the axial direction, and the outer surface of the vacuum suction roller (4) is provided with a plurality of air holes (413) communicating with the negative pressure cavity (427), and the negative pressure cavity (427) is communicated with the vacuum suction pump (43).

5. The coater with an adsorption roller on-line switching mechanism according to claim 4, characterized in that: The vacuum suction roller (4) comprises a main roller (42) fixed relative to the frame (1) and an outer roller cylinder (41) capable of rotating relative to the main roller, the inside of the main roller (42) is hollow and the inside of the main roller (42) is communicated with the vacuum suction pump (43); the negative pressure cavity (427) is formed in the part region between the outer peripheral wall of the main roller (42) and the inner peripheral wall of the outer roller cylinder (41) in the axial direction, a plurality of through holes (428) are arranged in the axial direction and are arranged corresponding to the negative pressure cavity (427) on the peripheral wall of the main roller (42), and the through holes (428) are communicated with the inside of the main roller (42) and the negative pressure cavity (427); a plurality of air holes (413) are provided on the outer roller cylinder (41) and are communicated with the region formed between the outer roller cylinder (41) and the main roller (42) and the outside.

6. The coater with an adsorption roller on-line switching mechanism according to claim 5, characterized in that: The outer circumferential surface of the main roller (42) is fixed with two partitions (425), each of which is arranged along the axial direction of the main roller (42) and has the same length as the main roller (42), the two partitions (425) are arranged at intervals along the radial direction of the main roller (42), and the side away from the main roller (42) of the two partitions (425) abuts against the inner side wall of the outer roller cylinder (41); the area between the outer circumferential wall of the main roller (42) and the inner circumferential wall of the outer roller cylinder (41) is divided into a negative pressure cavity (427) and an atmospheric pressure cavity (415) by the two partitions (425).

7. The coater with an adsorption roller on-line switching mechanism according to claim 5, characterized in that: The gas holes (413) are circularly arranged on the outer circumferential wall of the outer roller cylinder (41) and concentric with the radial cross section of the main shaft.

8. The coater with an adsorption roller on-line switching mechanism according to claim 7, characterized in that: The circularly arranged gas holes (413) are arranged at the lengthwise center position of the outer roller cylinder (41) and are provided with at least one ring.

9. The coater with an adsorption roller on-line switching mechanism according to claim 1, characterized in that: The coating machine further comprises a driving roller (31) and a passing roller (32) arranged on the rack (1), and the substrate is arranged around the driving roller (31) and the passing roller (32) and then around the transition roller (56) or the vacuum suction roller (4).

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