Automatic scraper gap adjusting mechanism

Abstract

The utility model discloses an automatic scraper clearance adjusting mechanism which comprises a fixing plate, a supporting plate, a vertical plate, a brake servo driving device, a first coupler, a speed reducer, a second coupler, a ball screw, a ball nut, a cylindrical roller bearing, a pitched roof bearing seat and a lower raceway plate. The output portion of the brake servo driving device is in transmission connection with the input end of the speed reducer through a first coupler, the output end of the speed reducer is in transmission connection with one end of the ball screw through a second coupler, and the ball nut and the pitched roof bearing seat are arranged on the ball screw in a sleeving mode and are in threaded fit with the ball screw. The pitched roof bearing seat is in sliding contact with the lower raceway plate; and the contact surface of the cylindrical roller bearing faces upwards and is obliquely arranged in a chute at the top of the pitched roof bearing seat. According to the utility model, through the control of the brake servo driving device, the torque conversion and transmission of the speed reducer and the coupler, and the movement of the cylindrical roller bearing in contact with the knife roll inclined block to be adjusted, the automatic adjustment of the gap between the knife roll inclined blocks is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of coating adjusting mechanisms, and more specifically, to an automatic knife gap adjusting mechanism. Background Art

[0002] A transfer experimental coater is a device used for researching and developing coating processes, usually used in laboratories or small-scale production. In a transfer experimental coater, the adjustment of the knife gap is usually manually adjusted. For example, in an improved comma knife coater disclosed in the utility model patent No. CN218610109U, initial calibration is carried out by manually adjusting a feeler gauge and a micrometer, then after zeroing the knife gauge, the first coating is carried out, and the surface density is checked. Finally, compared with the established process value, if there is a deviation, the screw is manually rotated to move the inclined block to adjust the knife gap until the process requirements are met. However, this process often requires multiple repeated operations to complete. Among them, the most crucial is that when rotating the screw to move the inclined block, two main resistances must be overcome: one is the pressure of the cylinder, and the other is the gravity of the knife roll. Due to the cumbersome and complex operation, the operator is prone to fatigue, which easily leads to an excessive deviation in the knife roll gap and insufficient accuracy. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the above-mentioned defects in the prior art, and provide an automatic knife gap adjusting mechanism with high automation degree, high control precision, stable and reliable operation, which improves the adjusting efficiency of the knife roll gap and reduces the labor intensity of the operator.

[0004] To achieve the above purpose, the utility model provides an automatic knife gap adjusting mechanism, which includes a fixing plate, a supporting plate, a vertical plate, a brake servo driving device, a first coupling, a speed reducer, a second coupling, a ball screw, a ball nut, a cylindrical roller bearing, an inclined top bearing seat, and a lower raceway plate. The supporting plate and the vertical plate are respectively parallel and fixedly arranged at both ends of the fixing plate. The output part of the brake servo driving device is connected with the input end of the speed reducer through the first coupling. The output end of the speed reducer is connected with one end of the ball screw through the second coupling. The other end of the ball screw passes through the vertical plate and is rotatably arranged on the supporting plate through a rotating bearing. The ball nut and the inclined top bearing seat are both sleeved on the ball screw and are in threaded cooperation with the ball screw. The inclined top bearing seat is fixedly connected with the ball nut and is located between the supporting plate and the vertical plate. The lower raceway plate is fixedly arranged between the inclined top bearing seat and the fixing plate. The inclined top bearing seat is in sliding contact with the lower raceway plate. The contact surface of the cylindrical roller bearing faces upward and is inclined and arranged in the inclined groove at the top of the inclined top bearing seat. The brake servo driving device can drive the ball screw to rotate through the speed reducer, so as to drive the cylindrical roller bearing on the inclined top bearing seat connected with the ball screw to move back and forth on the lower raceway plate.

[0005] Preferably, it further includes two angular contact bearings and an angular contact bearing positioning plate. The angular contact bearing positioning plate is fixedly arranged on the vertical plate. The two angular contact bearings are respectively rotatably arranged on the angular contact bearing positioning plate in sequence and sleeved on the ball screw. The inner wall surfaces of the two angular contact bearings respectively make rolling contact with the outer wall surface of the ball screw.

[0006] Preferably, it further includes a screw locking nut. The screw locking nut is sleeved on the ball screw and is in threaded cooperation with the ball screw. The screw locking nut is located at one end of the ball screw close to the second coupling.

[0007] Preferably, the brake servo drive device is set as a brake servo motor.

[0008] Preferably, it further includes a first coupling protective shell. The first coupling protective shell covers the outside of the first coupling. The two ends of the first coupling protective shell are respectively fixedly connected to the output end of the brake servo motor and the input end of the speed reducer.

[0009] Preferably, it further includes a second coupling protective shell. The second coupling protective shell covers the outside of the second coupling. The two ends of the second coupling protective shell are respectively fixedly connected to the output end of the speed reducer and one side of the vertical plate.

[0010] Preferably, the speed reducer is set as an NRV speed reducer. [[ID=!17]]

[0011] Preferably, both the first coupling and the second coupling are set as diaphragm couplings.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The structure of the present utility model is simple and reasonably designed. Through the control of the brake servo drive device, the torque conversion of the speed reducer, and the torque transmission of the coupling, the rotational motion of the ball screw is converted into the linear motion of the inclined top bearing block, and drives the movement of the cylindrical roller bearing in contact with the knife roller wedge block to be adjusted, thereby realizing the automatic adjustment of the gap of the knife roller wedge block. Its operation is simple, the degree of automation is high, the control precision is high, the operation is stable and reliable, the adjustment efficiency of the knife roller gap is improved, and the labor intensity of the operator is reduced, meeting the large-scale production requirements of enterprises. Description of the Drawings

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0015] Figure 1 is a schematic structural diagram of an automatic blade gap adjusting mechanism provided by an embodiment of the present invention;

[0016] Figure 2 is an enlarged schematic diagram of a partial structure of an automatic blade gap adjusting mechanism provided by an embodiment of the present invention. Detailed implementation manners

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0018] Please refer to Figure 1 , an embodiment of the present invention provides an automatic blade gap adjusting mechanism, including components such as a fixing plate 1, a support plate 11, a vertical plate 12, a brake servo drive device 2, a first coupling 21, a speed reducer 3, a second coupling 31, a ball screw 5, a ball nut 6, a cylindrical roller bearing 7, an inclined top bearing seat 8, and a lower raceway plate 9. The following will detail each component of this embodiment with reference to the accompanying drawings.

[0019] As Figure 1 shown, the support plate 11 and the vertical plate 12 can be respectively and fixedly arranged in parallel at both ends of the fixing plate 1. The output part of the brake servo drive device 2 is drivingly connected to the input end of the speed reducer 3 through the first coupling 21. The output end of the speed reducer 3 is drivingly connected to one end of the ball screw 5 through the second coupling 31. The other end of the ball screw 5 passes through the vertical plate 12 and is rotatably arranged on the support plate 11 through a rotating bearing 111. The ball nut 6 and the inclined top bearing seat 8 are both sleeved on the ball screw 5 and are in threaded cooperation with the ball screw 5. The inclined top bearing seat 8 is fixedly connected to the ball nut 6 and is located between the support plate 11 and the vertical plate 12. The lower raceway plate 9 is fixedly arranged between the inclined top bearing seat 8 and the fixing plate 1. The inclined top bearing seat 8 is in sliding contact with the lower raceway plate 9. The contact surface of the cylindrical roller bearing 7 faces upward and is inclined and arranged in the inclined groove 81 at the top of the inclined top bearing seat 8.

[0020] Among them, the cylindrical roller bearing 7 is preferably arranged as a double-row cylindrical roller bearing. The cylindrical roller bearing 7 has a relatively large contact area, high load-bearing capacity, can support large axial and radial loads, and has relatively low frictional losses during operation, and can maintain good accuracy and stability.

[0021] In this embodiment, a lower roller bearing is arranged between the bottom surface of the angled ejector bearing seat 8 and the lower raceway plate 9, and such a design can achieve better rolling contact between the two.

[0022] During specific implementation, the brake servo drive device 2 can drive the ball screw 5 to rotate through the speed reducer 3, thereby driving the cylindrical roller bearing 7 on the angled ejector bearing seat 8 that is in transmission connection with the ball screw 5 to move back and forth on the lower raceway plate 9. Among them, the speed reducer 3 can convert the high rotational speed of the brake servo drive device 2 into a suitable low rotational speed and greater torque.

[0023] Preferably, the rotating bearing 111 is arranged as a deep groove ball bearing.

[0024] As Figure 2 shown, specifically, it may further include two angular contact bearings 121 and an angular contact bearing positioning plate 122. The angular contact bearing positioning plate 122 is fixedly arranged on the vertical plate 12. The two angular contact bearings 121 are respectively rotatably arranged on the angular contact bearing positioning plate 122 in sequence and sleeved on the ball screw 5, and the inner wall surfaces of the two angular contact bearings 121 respectively achieve rolling contact with the outer wall surface of the ball screw 5.

[0025] In this embodiment, it may further include a screw locking nut 51. The screw locking nut 51 is sleeved on the ball screw 5 and is in threaded cooperation with the ball screw 5. The screw locking nut 51 is located at one end of the ball screw 5 close to the second coupling 31.

[0026] Among them, the angular contact bearing 121 is used to bear the support for the high-precision positioning of the ball screw 5, and it is necessary for the screw locking nut 51 to provide a pre-tightening force for the ball screw 5 to ensure stable rolling contact between the angular contact bearing 121 and the ball screw 5.

[0027] At Preferably, the brake servo drive device 2 can be arranged as a brake servo motor.

[0028] In addition, it may further include a first coupling protective shell 22. The first coupling protective shell 22 covers the outside of the first coupling 21, and both ends of the first coupling protective shell 22 are fixedly connected to the output end of the brake servo motor and the input end of the speed reducer 3 respectively.

[0029] It may further include a second coupling protective housing 32, which covers the outside of the second coupling 31, and both ends of the second coupling protective housing 32 are fixedly connected to the output end of the speed reducer 3 and one side of the vertical plate 12 respectively.

[0030] Furthermore, both the first coupling 21 and the second coupling 31 can be set as diaphragm couplings.

[0031] Among them, the diaphragm coupling is composed of metal diaphragms, and these diaphragms have good elasticity and toughness, can absorb the shaft offset and vibration, so as to adapt to the tiny shaft displacement during torque transmission and maintain high-precision torque transmission.

[0032] Preferably, the speed reducer 3 can be set as an NRV speed reducer. Among them, the NRV speed reducer is composed of a worm and a worm wheel, and the rotation of the worm drives the worm wheel to rotate. Due to the spiral structure of the worm, when the worm rotates one circle, the worm wheel only rotates a certain angle, and this process realizes the reduction of speed and the increase of torque.

[0033] The principle of the present utility model is as follows:

[0034] First of all, the operator inputs the required clearance parameters of the cutter roller wedge through the touch screen of the control system, and turns on the start button to transmit the control signal to the brake servo drive device. The brake servo drive device is connected to the speed reducer through the first coupling. The output end of the speed reducer transmits the rotation to the ball screw through the second coupling. The cooperation of the ball screw and the ball nut converts the rotary motion into the linear motion of the inclined top bearing seat. The roller contact surface of the cylindrical roller bearing contacts the cutter roller wedge. The movement of the inclined top bearing seat can change the contact position between the cylindrical roller bearing and the cutter roller wedge, thereby adjusting the clearance of the cutter roller wedge.

[0035] To sum up, the present utility model converts the rotary motion of the ball screw into the linear motion of the inclined top bearing seat through the control of the brake servo drive device, the torque conversion of the speed reducer and the torque transmission of the coupling, and drives the movement of the cylindrical roller bearing in contact with the cutter roller wedge to be adjusted, thereby realizing the automatic adjustment of the clearance of the cutter roller wedge. Its operation is simple, the degree of automation is high, the control precision is high, the operation is stable and reliable, improving the adjustment efficiency of the cutter roller clearance and reducing the labor intensity of the operator, meeting the large-scale production needs of enterprises.

[0036] The above embodiments are the preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present utility model shall be equivalent replacement methods and are all included in the protection scope of the present utility model.

Claims

1. An automatic blade gap adjusting mechanism, characterized in that: The invention comprises a fixed plate (1), a support plate (11), a vertical plate (12), a brake servo drive device (2), a first coupling (21), a reducer (3), a second coupling (31), a ball screw (5), a ball nut (6), a cylindrical roller bearing (7), a tilted top bearing seat (8), and a lower roller plate (9). The support plate (11) and the vertical plate (12) are respectively and parallelly fixedly arranged at the two ends of the fixed plate (1). The output part of the brake servo drive device (2) is connected to the input end of the reducer (3) through the first coupling (21). The output end of the reducer (3) is connected to one end of the ball screw (5) through the second coupling (31). The other end of the ball screw (5) passes through the vertical plate (12) and is rotatably arranged on the support plate (1) through a rotating bearing (111). 1), the ball nut (6) and the inclined top bearing seat (8) are both sleeved on the ball screw (5) and threadedly matched with the ball screw (5), the inclined top bearing seat (8) and the ball nut (6) are fixedly connected and are both located between the support plate (11) and the vertical plate (12), the lower roller plate (9) is fixedly set between the inclined top bearing seat (8) and the fixed plate (1), the inclined top bearing seat (8) and the lower roller plate (9) are in sliding contact, the contact surface of the cylindrical roller bearing (7) is upward and tilted in the inclined groove (81) at the top of the inclined top bearing seat (8), the brake servo drive device (2) can drive the ball screw (5) to rotate through the reducer (3), thereby driving the cylindrical roller bearing (7) on the inclined top bearing seat (8) connected to the ball screw (5) to move back and forth on the lower roller plate (9).

2. The automatic blade gap adjusting mechanism according to claim 1, wherein: The invention also includes two angular contact bearings (121) and an angular contact bearing positioning plate (122). The angular contact bearing positioning plate (122) is fixedly arranged on the vertical plate (12). The two angular contact bearings (121) are rotatably arranged on the angular contact bearing positioning plate (122) and sleeved on the ball screw (5). The inner wall surfaces of the two angular contact bearings (121) respectively realize rolling contact with the outer wall surface of the ball screw (5).

3. An automatic blade gap adjusting mechanism according to claim 1, characterized in that: It also includes a screw locking nut (51), which is sleeved on the ball screw (5) and threadably engaged with the ball screw (5), and is located on one end of the ball screw (5) close to the second coupling (31).

4. An automatic scraper clearance adjusting mechanism according to claim 1, characterized in that: The brake servo drive device (2) is configured as a brake servo motor.

5. An automatic blade gap adjusting mechanism according to claim 4, characterized in that: It also includes a first coupling protective shell (22), which is arranged on the outside of the first coupling (21), and the two ends of the first coupling protective shell (22) are fixedly connected to the output end of the brake servo motor and the input end of the reducer (3) respectively.

6. The automatic blade gap adjusting mechanism according to claim 1, characterized in that: The invention also includes a second coupling protective shell (32), which is arranged on the outside of the second coupling (31), and the two ends of the second coupling protective shell (32) are respectively fixedly connected to the output end of the reducer (3) and one side of the vertical plate (12).

7. An automatic tool rest clearance adjusting mechanism according to claim 1, characterized in that: The speed reducer (3) is set as an NRV speed reducer.

8. An automatic scraper gap adjusting mechanism according to claim 1, characterized in that: Both the first coupling (21) and the second coupling (31) are set as diaphragm couplings.

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