Negative pressure roller of coating machine

Abstract

The utility model discloses a coating machine negative pressure roller, relates to the technical field of coating machine equipment, and adopts the technical scheme that the coating machine negative pressure roller comprises an outer roller and an inner roller which are coaxially arranged, a plurality of through holes penetrating through the outer roller are formed in the outer roller, two partition plates sliding in the circumferential direction of the inner roller are arranged on the outer circumferential wall of the inner roller, and the sliding directions of the two partition plates are opposite; the ends, away from the inner roller, of the two partition plates abut against the inner wall of the outer roller, a plurality of air exhaust holes penetrating through the inner roller and located between the two partition plates are formed in the inner roller, the inner roller adjusts the distance between the two partition plates through two adjusting assemblies, and two check blocks are slidably connected between the two partition plates. The check blocks slide in the length direction of the partition plate, the sliding directions of the two check blocks are opposite, and the inner roller adjusts the distance between the two check blocks through an adjusting piece. Through the arrangement of the structure, the adsorption width on the negative pressure roller of the coating machine can be adjusted according to requirements, so that the negative pressure roller can adapt to different base materials and is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of coating machine equipment, and more specifically, to a negative pressure roller of a coating machine. Background Art

[0002] Negative pressure vacuum roller is a device commonly used in coating machines. It consists of a hollow roller body and a negative pressure vacuum system located inside it. The surface of the roller body is usually provided with multiple small holes or channels. Through these holes or channels, the vacuum system inside the roller body can generate negative pressure, adsorb the film material and transport it.

[0003] With the rapid development of the coating industry, the control of coating quality has become more and more stringent. In the existing technology, when the negative pressure vacuum roller transports the substrate, the substrate will fit with its surface, thereby producing a certain covering angle. However, if the covering angle between the substrate and the negative pressure vacuum roller is not appropriate, the substrate with a small covering angle may slip easily. Moreover, because the specifications of different substrates are different, the requirements for the adsorption width of the negative pressure vacuum roller are also different. It is relatively difficult to adjust both the covering angle and the adsorption width of the negative pressure vacuum roller, resulting in poor convenience in use.

[0004] Therefore, it is necessary to provide a coating machine negative pressure roller to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a negative pressure roller for a coating machine to solve the problems raised in the above background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A negative pressure roller of a coating machine comprises an outer roller and an inner roller which are coaxially arranged, the outer roller is provided with a plurality of through holes which penetrate the outer roller, the outer peripheral wall of the inner roller is provided with two partitions which slide along its circumference, the sliding directions of the two partitions are opposite, one end of the two partitions away from the inner roller abuts against the inner wall of the outer roller, the inner roller is provided with a plurality of air suction holes which penetrate the inner roller and are located between the two partitions, the inner roller adjusts the spacing between the two partitions through two groups of adjustment components, two blocks are slidably connected between the two partitions, the blocks slide along the length direction of the partitions and the sliding directions of the two blocks are opposite, and the inner roller adjusts the spacing between the two blocks through an adjustment member.

[0008] The technical solution of the utility model is further configured as follows: the two groups of the adjustment components are respectively located at the two ends of the inner roller in the length direction, the adjustment components include a rotating member 1 and a rotating member 2 located in the inner roller, the rotating member 1 is transmission-connected to the rotating member 2 through a transmission member, the rotating member 1 and the rotating member 2 are both fixedly connected with a connecting member that passes through the inner roller, and the other ends of the two connecting members are respectively fixedly connected to the two partitions.

[0009] The technical solution of the utility model is further configured as follows: the first rotating member, the second rotating member and the transmission member are all bevel gears.

[0010] The technical solution of the utility model is further configured as follows: two fixed plates are fixedly connected to the outer peripheral wall of the inner roller, the two partitions are located between the two fixed plates, two slide grooves 1 are opened on the two fixed plates, two slide grooves 2 are opened at both ends of the inner roller, and the connecting piece is located in both the slide grooves 1 and 2.

[0011] The technical solution of the utility model is further configured as follows: the adjusting member is rotatably connected between the two fixed plates and is located between the two partitions, the adjusting member includes two threaded sections fixedly connected to each other, the spiral directions of the two threaded sections are opposite, and the two blocks are respectively threadedly connected to the two threaded sections.

[0012] The technical solution of the utility model is further configured as follows: the rotating member 1 and the adjusting member are driven by motor 1 and motor 2 respectively, the motor 1 is fixedly connected in the inner roller and the rotating member 1 is fixedly connected to the output shaft of the motor 1, the motor 2 is fixedly connected to the outer peripheral wall of the inner roller and its output shaft passes through the fixed plate and is fixedly connected to the adjusting member.

[0013] The technical solution of the utility model is further configured as follows: a plurality of extension blocks extending from the inside are provided at both ends of the stopper, the cross-sections of the stopper and the plurality of extension blocks are arc-shaped, a slide groove three is provided on the surfaces of the two partitions facing each other, and a slider located in the slide groove three is fixedly connected to the extension block at the edge of the stopper.

[0014] The technical solution of the utility model is further configured as follows: an exhaust hood is fixedly connected inside the inner roller, a plurality of exhaust holes are connected to the interior of the exhaust hood, and the exhaust hood is connected to the outside through an exhaust pipe along the length direction of the inner roller.

[0015] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0016] Two sets of adjustment components are used to control the connection parts to drive the partition to move, so as to adjust the area of ​​the exhaust area generated by the exhaust holes on the inner roller, thereby controlling the covering angle between the substrate and the outer roller to meet the specifications of different substrates and avoid the substrate from slipping. The control is relatively convenient and easy for the staff to operate.

[0017] The adjusting part is driven to rotate by motor 2, so that the two threaded sections with opposite spiral directions are used to drive the two blocks to move toward or away from each other. Due to the existence of the extension block, the two groups of blocks and the extension block can divide the suction area generated by the suction hole into three sections, and the middle area is used to adjust and adsorb according to the size of different substrates. This method can also avoid excessive adsorption force and prevent damage to the substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the inner roller in the utility model;

[0020] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0021] Figure 4 It is a cross-sectional view of the inner roller in the utility model;

[0022] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0023] Figure 6 It is a structural schematic diagram of the adjusting member in the utility model.

[0024] In the figure: 1. outer roller; 2. inner roller; 3. through hole; 4. partition; 5. exhaust hole; 6. stopper; 7. adjusting member; 8. rotating member 1; 9. rotating member 2; 10. transmission member; 11. connecting member; 12. fixed plate; 13. slide slot 1; 14. slide slot 2; 15. threaded section; 16. motor 1; 17. motor 2; 18. extension block; 19. slide slot 3; 20. exhaust hood; 21. exhaust pipe. DETAILED DESCRIPTION

[0025] In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model. Example

[0026] like Figures 1 to 6 As shown, the utility model provides a negative pressure roller of a coating machine, comprising an outer roller 1 and an inner roller 2 which are coaxially arranged, the outer roller 1 is coated with a layer of silk nylon mesh to prevent dust from entering, a plurality of through holes 3 penetrating the outer roller 1 are provided, two partitions 4 which slide along the circumference are provided on the outer peripheral wall of the inner roller 2, the sliding directions of the two partitions 4 are opposite, one end of the two partitions 4 away from the inner roller 2 is against the inner wall of the outer roller 1, a plurality of exhaust holes 5 penetrating the inner roller 2 and located between the two partitions 4 are provided on the inner roller 2, the inner roller 2 adjusts the distance between the two partitions 4 by two groups of adjustment components, two stoppers 6 are slidably connected between the two partitions 4, the stoppers 6 slide along the length direction of the partitions 4 and the sliding directions of the two stoppers 6 are opposite, and the inner roller 2 adjusts the distance between the two stoppers 6 by an adjustment member 7.

[0027] like Figures 1 to 6 As shown, the two groups of adjustment components are respectively located at the two ends of the length direction of the inner roller 2, and the adjustment component includes a rotating member 1 8 and a rotating member 2 9 located in the inner roller 2. The rotating member 1 8 is connected to the rotating member 2 9 through a transmission member 10. The rotating member 1 8, the rotating member 2 9 and the transmission member 10 are all bevel gears. The rotating member 1 8 and the rotating member 2 9 are fixedly connected with a connecting member 11 that runs through the inner roller 2. The other ends of the two connecting members 11 are respectively fixedly connected to the two partitions 4. Two fixed plates 12 are fixedly connected to the outer peripheral wall of the inner roller 2. The two partitions 4 are located between the two fixed plates 12. Two slide grooves 13 are opened on the two fixed plates 12. Two slide grooves 2 14 are opened at both ends of the inner roller 2. The connecting member 11 is simultaneously located in the slide groove 13 and the slide groove 2 14. The rotating member 8 is driven by a motor 16. The motor 16 is fixedly connected in the inner roller 2 and the rotating member 8 is fixedly connected to the output shaft of the motor 16.

[0028] The motor 16 is started, driving the rotating member 18 to rotate, so that the rotating member 18 drives the transmission member 10 and the rotating member 2 9 to rotate together, so that the two connecting members 11 rotate toward each other, and the two connecting members 11 drive the two partitions 4 to rotate along the slide groove 13 and the slide groove 2 14, so that the suction area formed by the suction hole 5 between the two partitions 4 is reduced, so as to adjust the covering angle when the outer roller 1 adsorbs the substrate, and because there are two groups of adjustment components, the two ends of the two partitions 4 can be controlled at the same time, so that the movement of the partition 4 is smoother.

[0029] like Figures 1 to 6As shown, the adjusting member 7 is rotatably connected between the two fixed plates 12 and is located between the two partition plates 4. The adjusting member 7 includes two threaded sections 15 fixedly connected to each other. The spiral directions of the two threaded sections 15 are opposite. The two blocks 6 are respectively threadedly connected to the two threaded sections 15. The adjusting member 7 is driven by the second motor 17. The second motor 17 is fixedly connected to the outer peripheral wall of the inner roller 2 and its output shaft passes through the fixed plate 12 and is fixedly connected to the adjusting member 7.

[0030] Start the motor 2 17 and let the output shaft of the motor 2 17 drive the adjusting member 7 to rotate. At this time, the two blocks 6 on the two threaded sections 15 will approach each other, so that the exhaust area formed by the exhaust holes 5 between the two partitions 4 is divided into three sections, so that the length of the middle section can be adjusted according to the needs of the current substrate, so that the substrate is adsorbed in the middle section and forms a covering angle with the outer roller 1. This method is convenient for adjustment and adsorption according to the size of different substrates, and can also avoid excessive local adsorption force to prevent damage to the substrate.

[0031] like Figures 1 to 6 As shown, both ends of the stopper 6 are provided with a plurality of extension blocks 18 extending from the inside thereof, the cross-sections of the stopper 6 and the plurality of extension blocks 18 are arc-shaped, a slide groove 3 19 is provided on the surfaces of the two partitions 4 facing each other, a slider (not shown in the figure) located in the slide groove 3 19 is fixedly connected to the extension block 18 at the edge of the stopper 6, an exhaust hood 20 is fixedly connected to the inner roller 2, a plurality of exhaust holes 5 are connected to the inside of the exhaust hood 20, and the exhaust hood 20 is connected to the outside through an exhaust pipe 21 along the length direction of the inner roller 2.

[0032] The extension block 18 enables the block 6 to completely divide the adsorption area between the outer roller 1 and the substrate into three sections, and when the two partitions 4 move closer to or farther away from each other to adjust the covering angle, the extension block 18 can also be retracted into the block 6 or continue to extend out of the block 6 to always divide the adsorption area into three sections to adapt to the adsorption width required for different substrates. The presence of the slider can also make the extension block 18 smoother when sliding, and the exhaust pipe 21 can be connected to an external exhaust device to generate suction in the exhaust hood 20 and the exhaust hole 5 for conveying the substrate.

[0033] like Figures 1 to 6As shown, after replacing the substrate to be transported, the motor 2 17 can be started first according to the width of the substrate, so that the two blocks 6 slide toward or away from each other, and the suction area generated by the suction hole 5 is divided into three sections. The middle section is used to adapt to the width of the substrate, and then the motor 16 is started to make the two partitions 4 on the inner roller 2 slide toward or away from each other to adjust the covering angle between the outer roller 1 and the substrate according to the needs of the substrate. Finally, the suction pipe 21 can be connected to the external suction equipment, so as to generate suction in the suction hood 20, and generate suction at the suction hole 5 and the through hole 3 to adsorb the substrate to be transported.

[0034] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A negative pressure roller of a coating machine, comprising an outer roller (1) and an inner roller (2) arranged coaxially, wherein the outer roller (1) is provided with a plurality of through holes (3) penetrating the outer roller. Features: Two partitions (4) are provided on the outer peripheral wall of the inner roller (2) and slide along the circumference thereof. The sliding directions of the two partitions (4) are opposite. One end of the two partitions (4) away from the inner roller (2) abuts against the inner wall of the outer roller (1). The inner roller (2) is provided with a plurality of air suction holes (5) penetrating the inner roller and located between the two partitions (4). The inner roller (2) adjusts the spacing between the two partitions (4) through two groups of adjustment components. Two stoppers (6) are slidably connected between the two partitions (4). The stoppers (6) slide along the length direction of the partitions (4) and the sliding directions of the two stoppers (6) are opposite. The inner roller (2) adjusts the spacing between the two stoppers (6) through an adjustment member (7).

2. A negative pressure roller for a coating machine according to claim 1, Features: The two groups of adjustment components are respectively located at the two ends of the inner roller (2) in the length direction. The adjustment components include a rotating member 1 (8) and a rotating member 2 (9) located in the inner roller (2). The rotating member 1 (8) is connected to the rotating member 2 (9) through a transmission member (10). The rotating member 1 (8) and the rotating member 2 (9) are both fixedly connected with a connecting member (11) that passes through the inner roller (2). The other ends of the two connecting members (11) are respectively fixedly connected to the two partitions (4).

3. A negative pressure roller for a coating machine according to claim 2, Features: The rotating member 1 (8), the rotating member 2 (9) and the transmission member (10) are all bevel gears.

4. The negative pressure roller of a coating machine according to claim 2, Features: Two fixed plates (12) are fixedly connected to the outer peripheral wall of the inner roller (2), the two partition plates (4) are located between the two fixed plates (12), the two fixed plates (12) are each provided with two first slide grooves (13), two second slide grooves (14) are each provided at both ends of the inner roller (2), and the connecting member (11) is simultaneously located in the first slide groove (13) and the second slide groove (14).

5. A negative pressure roller for a coating machine according to claim 4, Features: The adjusting member (7) is rotatably connected between the two fixing plates (12) and is located between the two partition plates (4). The adjusting member (7) comprises two threaded sections (15) fixedly connected to each other, the spiral directions of the two threaded sections (15) are opposite, and the two stoppers (6) are respectively threadedly connected to the two threaded sections (15).

6. A negative pressure roller for a coating machine according to claim 5, Features: The rotating member 1 (8) and the adjusting member (7) are driven by a motor 1 (16) and a motor 2 (17) respectively; the motor 1 (16) is fixedly connected inside the inner roller (2) and the rotating member 1 (8) is fixedly connected to the output shaft of the motor 1 (16); the motor 2 (17) is fixedly connected to the outer peripheral wall of the inner roller (2) and its output shaft passes through the fixed plate (12) and is fixedly connected to the adjusting member (7).

7. The negative pressure roller of a coating machine according to claim 1, Features: Both ends of the stopper (6) are provided with a plurality of extension blocks (18) extending from the inside thereof, the cross-sections of the stopper (6) and the plurality of extension blocks (18) are both arc-shaped, a slide groove three (19) is provided on the surfaces of the two partitions (4) facing each other, and a slider located in the slide groove three (19) is fixedly connected to the extension block (18) at the edge of the stopper (6).

8. The negative pressure roller of a coating machine according to claim 1, Features: An exhaust hood (20) is fixedly connected inside the inner roller (2), and the plurality of exhaust holes (5) are connected to the interior of the exhaust hood (20). The exhaust hood (20) is connected to the outside through an exhaust pipe (21) along the length direction of the inner roller (2).

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