Distance adjusting device for film forming rollers

Abstract

The utility model relates to a film forming roller spacing adjusting device. The film forming roller spacing adjusting device comprises a fixed roller bearing seat, a movable roller bearing seat, a spacing adjusting structure and a controller, wherein the fixed roller bearing seat is fixed with a wall plate; the movable roller bearing seat is connected with the wall plate in a sliding manner; the spacing adjusting structure comprises a worm gear lead screw lifter mounted on the fixed roller bearing seat, a positioning shaft arranged on the movable roller bearing seat, and a linear displacement sensor of which the two ends are respectively hinged with the fixed roller bearing seat and the movable roller bearing seat; the device has the beneficial effects that when the distance between the fixed roller bearing seat and the movable roller bearing seat is accurately adjusted, the output shaft of the worm gear screw rod lifting machine is propped against the positioning shaft after extending, the output shaft of the worm gear screw rod lifting machine pushes the positioning shaft, and the positioning shaft drives the movable roller bearing seat to move, so that the distance between the fixed roller bearing seat and the movable roller bearing seat is accurately adjusted. The linear displacement sensor measures the distance between the two bearing seats in real time, and original manual adjustment is replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of distance adjusting devices, in particular to a distance adjusting device for film forming rollers. Background Art

[0002] The distance between the forming rollers of the film unit of our company needs to be adjusted according to different types and thicknesses of films. Currently, the bearing seat of one forming roller is fixed to the wall panel, and the bearing seat of the other forming roller can slide along the wall panel. A fine adjustment device and a dial indicator are provided on the fixed bearing seat. The fine adjustment device is a hand-cranked worm and screw lift. The output shaft of the hand-cranked worm and screw lift abuts against the sliding bearing seat to accurately adjust the distance between the two forming rollers. The base of the dial indicator is fixed on the fixed bearing seat, and the probe of the dial indicator abuts against the movable bearing seat. By turning the handwheel of the hand-cranked worm and screw lift by hand, the distance between the two forming rollers is finely adjusted, and the dial indicator shows the accurate distance between the two bearing seats. The adjustment is relatively cumbersome and inefficient, which needs to be solved. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a distance adjusting device for film forming rollers, which can automatically display the distance between the two forming rollers and can automatically finely adjust the distance between the two forming rollers according to needs, facilitating the accurate adjustment of the film thickness.

[0004] To solve the above problems, the utility model adopts the following technical solutions:

[0005] A distance adjusting device for film forming rollers includes a fixed roller bearing seat fixed to the wall panel, a movable roller bearing seat slidably connected to the wall panel, a distance adjustment structure provided between the fixed roller bearing seat and the movable roller bearing seat, and a control device; the control device is signal-connected to the adjustment structure.

[0006] Further, the distance adjustment structure includes a worm and screw lift installed on the fixed roller bearing seat and a positioning shaft provided on the movable roller bearing seat; when accurately adjusting the distance between the fixed roller bearing seat and the movable roller bearing seat, the output shaft of the worm and screw lift extends and abuts against the positioning shaft, and the output shaft of the worm and screw lift pushes the positioning shaft, and the positioning shaft drives the movable roller bearing seat to move.

[0007] Further, the distance adjustment structure further includes a distance fine adjustment and measurement structure provided between the fixed roller bearing seat and the movable roller bearing seat.

[0008] Further, the spacing fine-tuning measurement structure includes a linear displacement sensor with two ends respectively hinged to the fixed roller bearing seat and the movable roller bearing seat; the linear displacement sensor is used to measure the distance between the fixed roller bearing seat and the movable roller bearing seat; the linear displacement sensor is signal-connected to the control device.

[0009] Further, connecting rods are provided on both the fixed roller bearing seat and the movable roller bearing seat; rod end spherical plain bearings are provided on the connecting rods; the two rod end spherical plain bearings are connected by the linear displacement sensor.

[0010] Further, the spacing adjustment structure further includes a screw jack with the cylinder body hinged to the wall panel, and the cylinder rod of the oil cylinder is fixedly connected to the movable roller bearing seat; the oil cylinder is signal-connected to the control device.

[0011] Further, guide rails are provided on the wall panel, and sliders are provided on the movable roller bearing seat; the sliders are slidably connected to the guide rails.

[0012] Further, the control device is a PLC controller, and the PLC controller is respectively signal-connected to the worm gear screw jack, the linear displacement sensor, and the oil cylinder; the PLC controller is provided with a display screen.

[0013] The beneficial effects of the present utility model are:

[0014] By providing the spacing adjustment structure including a worm gear screw jack installed on the fixed roller bearing seat, a positioning shaft provided on the movable roller bearing seat, and a spacing fine-tuning measurement structure; the spacing fine-tuning measurement structure includes a linear displacement sensor with two ends respectively hinged to the fixed roller bearing seat and the movable roller bearing seat; when accurately adjusting the distance between the fixed roller bearing seat and the movable roller bearing seat, the output shaft of the worm gear screw jack extends and abuts against the positioning shaft, the output shaft of the worm gear screw jack pushes the positioning shaft, the positioning shaft drives the movable roller bearing seat to move, the linear displacement sensor can real-time display the accurate distance between the two bearing seats, and transmit the distance signal to the controller, and the controller issues a working signal to the worm gear screw jack according to the set distance, thereby realizing the fine-tuning of the distance between the two bearing seats;

[0015] By hinging the two ends of the linear displacement sensor to the two bearing seats respectively, it is avoided that the linear displacement sensor is damaged by the lateral force due to fixed connection. Description of the Drawings

[0016] Figure 1 is a structural schematic diagram of the present utility model;

[0017] Figure 2 is a main view of the connection between the movable roller bearing seat and the wall panel;

[0018] Figure 3 Left side view cross-sectional view showing the connection between the movable roller bearing housing and the wall panel

[0019] Figure 4 It is Figure 1 Enlarged view of part D of

[0020] Figure 5 Installation schematic diagram of the linear displacement sensor

[0021] Description of the reference numerals in the figure

[0022] 1 - Wall panel, 2 - Fixed bearing housing, 3 - Forming roller, 4 - Servo motor, 5 - Planetary gear reducer, 6 - Worm gear screw lift, 7 - Output shaft, 8 - Positioning shaft, 9 - Movable roller bearing housing, 91 - Oil cylinder, 10 - Linear displacement sensor, 11 - Guide rail, 12 - Slide block, 101 - Connecting rod, 102 - Rod end spherical plain bearing Specific implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment 1

[0025] As Figures 1-5 shown

[0026] For the convenience of description, the two forming rollers 3 are respectively defined as a movable roller and a fixed roller. Both of the two forming rollers 3 can rotate in their respective bearing housings. The one that cannot move on the wall panel 1 is the fixed roller, and the one that can slide on the wall panel 1 is the movable roller.

[0027] A film forming roller spacing adjusting device includes a fixed roller bearing housing 2 fixed to the wall panel 1, a movable roller bearing housing 9 slidably connected to the wall panel 1, a spacing adjusting structure provided between the fixed roller bearing housing 2 and the movable roller bearing housing 9, and a control device. The control device is signal - connected to the adjusting structure.

[0028] The spacing adjusting structure includes a worm gear screw lift 6 installed on the fixed roller bearing housing 2 and a positioning shaft 8 provided on the movable roller bearing housing 9. When it is necessary to precisely adjust the distance between the fixed roller bearing housing 2 and the movable roller bearing housing 9, the output shaft 7 of the worm gear screw lift 6 extends and abuts against the positioning shaft 8. The output shaft 7 of the worm gear screw lift 6 pushes the positioning shaft 8, and the positioning shaft 8 drives the movable roller bearing housing 9 to move.

[0029] The input end of the worm screw lift 6 is provided with a planetary gear reducer 5, and the input end of the planetary gear reducer 5 is provided with a servo motor 4; in this way, after two-stage deceleration, the distance that the output shaft of the worm screw lift extends can be accurately controlled by the servo motor.

[0030] The spacing adjustment structure further includes a spacing fine-tuning measurement structure arranged between the fixed roller bearing seat 2 and the movable roller bearing seat 9.

[0031] The spacing fine-tuning measurement structure further includes a linear displacement sensor 10 whose two ends are respectively hinged to the fixed roller bearing seat 2 and the movable roller bearing seat 9; the linear displacement sensor 10 is used to measure the distance between the fixed roller bearing seat 2 and the movable roller bearing seat 9 in real time; the linear displacement sensor 10 is signal-connected to the control device.

[0032] As Figure 5 shown, connecting rods 102 are provided on both the fixed roller bearing seat 2 and the movable roller bearing seat 9; one end of the connecting rod 102 has a thread, and the other end is a light column. The end with the thread is screwed into the bearing seat, and the end with the light column passes through the bearing hole of the rod-end spherical plain bearing 101; the rod-ends of the two rod-end spherical plain bearings 101 are respectively fixed to the linear displacement sensor 10.

[0033] By arranging the spherical plain bearings, it is avoided that when the movable roller bearing seat moves, the linear displacement sensor 10 is subjected to a lateral force, resulting in measurement errors or damage.

[0034] The control device is a PLC controller, and the PLC controller is respectively signal-connected to the worm screw lift 6 and the linear displacement sensor 10; the PLC controller is provided with a display screen.

[0035] The working process of the present utility model

[0036] According to the type and thickness of the film, the standard distance thresholds of the two forming rollers 3 in the PLC controller are set on the display screen respectively.

[0037] When changing the film variety or thickness, start the servo motor 4, the servo motor drives the planetary gear reducer 5 to rotate, the planetary gear reducer drives the output shaft 7 of the worm screw lift 6 to extend, the output shaft 7 abuts against the end face of the positioning shaft 8 on the movable roller bearing seat 9, and pushes the movable roller bearing seat 9 to move. The linear displacement sensor 10 records the distance between the two bearing seats in real time and feeds it back to the PLC controller. When the detected distance of the linear displacement sensor 10 reaches the standard distance threshold, the controller sends a stop signal to the servo motor 4.

[0038] After the distance is adjusted, the movable roller is actually in a relatively fixed position under the state where the extension rod of the screw jack is tightened and the extension of the oil cylinder pushes and presses, and a uniform axial gap is formed between the movable roller and the fixed roller. The molten raw material is uniformly flattened and passes through the gap, thereby producing a sheet or film with uniform thickness.

[0039] Embodiment 2

[0040] The structure of this embodiment is basically the same as that of Embodiment 1.

[0041] The difference lies in that

[0042] As Figure 2 shown, the spacing adjustment structure further includes an oil cylinder 91 whose cylinder body is fixedly connected to the wall panel 1; the piston rod of the oil cylinder 91 is hinged to the movable roller bearing seat 9, and the oil cylinder 91 is signal-connected to the control device.

[0043] By setting the oil cylinder 91, a relatively large distance adjustment of the movable roller bearing seat 9 can be realized to quickly open the movable roller. When it is necessary to work and press between the two forming rollers 3, first start the oil cylinder 91 to push forward. If fine adjustment of the gap size is required, when the two forming rollers 3 are within a small range and are limited by the extension rod of the elevator, the oil cylinder 91 stops pushing forward and keeps the pressure, and the servo motor 4 is started, and the fine adjustment structure is used for careful adjustment.

[0044] Embodiment 3

[0045] The structure of this embodiment is basically the same as that of Embodiment 1.

[0046] The difference lies in that

[0047] A guide rail 11 is provided on the wall panel 1, and a slider 12 is provided on the movable roller bearing seat 9; the slider 12 is slidably connected to the guide rail 11.

[0048] The guide rail 11 is a rectangular guide rail, and the slider 12 is a rectangular slider. By setting the rectangular slider and the rectangular guide rail, a large force can be borne without deformation.

[0049] The above; only the preferred specific embodiments of the present invention; but the protection scope of the present invention is not limited thereto; any person skilled in the art within the technical scope disclosed by the present invention; according to the technical solution of the present invention and its improved concept, equivalent replacement or change; should be covered within the protection scope of the present invention.

[0050] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0051] The above are only embodiments of the present utility model. Common general knowledge such as specific structures and characteristics known in the art are not described in detail herein. Those of ordinary skill in the art know all the common general knowledge in the technical field to which the utility model pertains before the filing date or priority date, can know all the prior art in this field, and have the ability to apply conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, complete and implement this solution in combination with their own capabilities. Some typical well-known structures or well-known methods should not be an obstacle for those of ordinary skill in the art to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A device for adjusting the distance between film forming rollers, characterized in that, It includes a fixed roller bearing seat (2) fixed to the wall panel (1), a movable roller bearing seat (9) slidably connected to the wall panel (1), a spacing adjustment structure provided between the fixed roller bearing seat (2) and the movable roller bearing seat (9), and a control device; the control device is signal-connected to the adjustment structure; The spacing adjustment structure includes a worm gear screw jack (6) installed on the fixed roller bearing seat (2) and a positioning shaft (8) provided on the movable roller bearing seat (9); when precisely adjusting the distance between the fixed roller bearing seat (2) and the movable roller bearing seat (9), the output shaft (7) of the worm gear screw jack (6) extends and abuts against the positioning shaft (8), the output shaft (7) of the worm gear screw jack (6) pushes the positioning shaft (8), and the positioning shaft (8) drives the movable roller bearing seat (9) to move; The spacing adjustment structure further includes a fine spacing measurement structure provided between the fixed roller bearing seat (2) and the movable roller bearing seat (9).

2. The film forming roll spacing adjusting device according to claim 1, characterized in that: The fine spacing measurement structure includes a linear displacement sensor (10) whose two ends are respectively hinged to the fixed roller bearing seat (2) and the movable roller bearing seat (9); the linear displacement sensor (10) is used to measure the distance between the fixed roller bearing seat (2) and the movable roller bearing seat (9); the linear displacement sensor (10) is signal-connected to the control device.

3. The spacing adjustment device for a film forming roller according to claim 2, wherein: Connecting rods (102) are provided on both the fixed roller bearing seat (2) and the movable roller bearing seat (9); rod end spherical plain bearings (101) are provided on the connecting rods (102); the two rod end spherical plain bearings (101) are connected by the linear displacement sensor (10).

4. A film forming roll spacing adjusting device according to claim 2, characterized in that: The spacing adjustment structure further includes an oil cylinder (91) whose cylinder body is fixedly connected to the wall panel (1), and the oil cylinder rod of the oil cylinder is hinged to the movable roller bearing seat (9); the oil cylinder (91) is signal-connected to the control device.

5. The film forming roll spacing adjusting device according to claim 4, wherein A guide rail (11) is provided on the wall panel (1), and a slider (12) is provided on the movable roller bearing seat (9); the slider (12) is slidably connected to the guide rail (11).

6. The film forming roll spacing adjusting device according to claim 5, wherein: The control device is a PLC controller, and the PLC controller is respectively signal-connected to the worm gear screw jack (6), the linear displacement sensor (10), and the oil cylinder; the PLC controller is provided with a display screen.

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