Film roll cantilever type cutting mechanism

Abstract

The invention discloses a film roll cantilever type cutting mechanism which comprises a support, a sliding block is arranged on the support in a sliding mode, the upper end and the lower end of the sliding block are connected with an upper air cylinder and a lower air cylinder respectively, the upper air cylinder is connected with a proportional valve and a switch valve, and the upper air cylinder adjusts downward pressure of the sliding block through the proportional valve. An upper knife roll is rotationally arranged on the sliding block and connected with a driving mechanism, a lower back roll is arranged below the upper knife roll, and the lower back roll is rotationally arranged on the support. Compared with the prior art, when film penetrating is needed, after the electromagnetic valve is switched off, the upper air cylinder retreats, the lower air cylinder drives the upper knife roll to ascend along the first sliding rail, and a space is reserved for workers to complete the film penetrating action. And after the film penetrating action is completed, the electromagnetic valve is started, parameters of the electric proportional valve are set according to the actual position of the upper knife roll, and the gap between the upper knife roll and the lower back roll is adjusted to meet the requirement for product cutting size precision.

Description

Technical Field

[0001] The present invention relates to the technical field of film roll cutting, and particularly to a cantilever type cutting mechanism for film rolls. Background Art

[0002] At present, there are mainly two ways to cut transdermal preparations in the market. One is the punching method, which is an intermittent cutting machine mechanism with low production capacity. The other is a roll cutting mechanism supported at both ends, which is a continuous cutting mechanism. After the clearance between the upper cutting roll and the lower back roll is adjusted by two front and rear adjusting screw rods, the position of the upper cutting roll will not move any more. Therefore, it is extremely inconvenient during film threading or debugging and maintenance of the cutting mechanism. The patent with the publication number CN201721563899 discloses a rubber roll cylinder pressurizing mechanism, including a traction roll and a station frame at both ends of the traction roll. A driving motor for driving the traction roll is arranged outside the station frame. A rubber roll is arranged directly above the traction roll. Sliders are arranged at both ends of the rubber roll. A slideway that cooperates with the slider and has a single-sided opening is arranged on the station frame. A cylinder is arranged at the single-sided opening of the slideway. The telescopic end of the cylinder moves along the slideway, and the telescopic end of the cylinder is fixedly connected to the slider. In the present utility model, linear slide rails are arranged on both sides of the rubber roll. The sliders therein are controlled by cylinders and can move up and down along the slideway. The sliders drive the rubber roll to move up and down, and the traction roll remains stationary, realizing a relative displacement between the rubber roll and the traction roll, that is, generating pressure or no pressure between the rubber roll and the traction roll. The cylinder presses the rubber roll on the traction roll to process the product. In the transdermal preparation cutting process, the upper cutting roll and the lower back roll cannot be in contact during cutting, so as to achieve the effect of cutting the upper film paper while not cutting the lower film paper. Summary of the Invention

[0003] The present invention provides a cantilever type cutting mechanism for film rolls to solve the problem of great inconvenience during film threading or debugging and maintenance of the existing cutting mechanism.

[0004] The present invention provides a cantilever type cutting mechanism for film rolls, including a bracket. A slider is slidably arranged on the bracket. An upper cylinder and a lower cylinder are respectively connected to the upper end and the lower end of the slider. The upper cylinder is connected with a proportional valve and a switching valve. The upper cylinder adjusts the downward pressure of the slider through the proportional valve. An upper cutting roll is rotatably arranged on the slider. The upper cutting roll is connected with a driving mechanism. A lower back roll is arranged below the upper cutting roll. The lower back roll is rotatably arranged on the bracket.

[0005] Preferably, one end of the upper cutting roll is rotatably arranged on the slider, and one end of the lower back roll is rotatably arranged on the bracket.

[0006] Preferably, a base is arranged below the bracket, and the bracket slides horizontally along the base.

[0007] Preferably, a plurality of first slide rails are fixed on the bracket, the slider is slidably connected to the first slide rails, and the first slide rails are distributed at the front end and the rear end of the slider.

[0008] Preferably, the driving mechanism includes: a motor, a speed reducer and a coupling. The speed reducer is respectively fixed to the motor and the coupling, and the coupling is fixedly connected to the upper knife roller.

[0009] Preferably, a connecting shaft is fixed inside the upper knife roller. The connecting shaft is rotatably connected to the slider, the connecting shaft is fixedly connected to the coupling, and the coupling and the upper knife roller are respectively located at the rear end and the front end of the slider.

[0010] Preferably, a connecting block and a second slide rail are provided between the base and the bracket. The bracket is slidably connected to the second slide rail. The connecting block and the second slide rail are respectively fixed to the bracket and the base. A lead screw is threadedly connected to the connecting block, and the lead screw is rotatably arranged on the base.

[0011] Preferably, it further includes a mounting plate, and the mounting plate is provided with an avoidance hole adapted to the bracket.

[0012] Preferably, a locking mechanism for fixing the bracket to the base is provided on the bracket.

[0013] Preferably, an adjusting rod is threadedly connected to the upper end of the bracket, and the bottom of the adjusting rod is in contact with the upper end of the slider.

[0014] Compared with the prior art, in the present invention, when film threading is required, after the solenoid valve is disconnected, the upper air cylinder retracts, and the lower air cylinder drives the upper knife roller to rise along the first slide rail, leaving space for the operator to complete the film threading operation. After the film threading operation is completed, the solenoid valve is started, and according to the actual position of the upper knife roller, the parameters of the electro-hydraulic proportional valve are set to adjust the gap between the upper knife roller and the lower back roller to a gap that meets the product cutting size accuracy requirements. If further improvement in cutting accuracy is required, fine adjustment can be performed through the adjusting rod to meet the cutting requirements. When the solenoid valve is disconnected, it is convenient for film threading, replacing the upper knife roller and routine maintenance. The present invention realizes high-speed cutting through the driving mechanism, meets the customer's production capacity requirements, and at the same time has strong structural compatibility and can meet different specifications of cutting. Secondly, it has high operability and maintainability, saves downtime, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1Schematic structural diagram of the present invention;

[0017] Figure 2 Schematic sectional view of the present invention;

[0018] Figure 3 Schematic structural diagram of the film roll cantilever cutting mechanism of the present invention mounted on the mounting plate;

[0019] Figure 4 is Figure 3 left view of

[0020] Reference numerals:

[0021] 1. Bracket, 2. Slide block, 3. Upper air cylinder, 4. Lower air cylinder, 5. Proportional valve, 6. Switch valve, 7. Upper knife roller, 100. Driving mechanism, 8. Lower back roller, 9. Base, 10. First slide rail, 11. Motor, 12. Reducer, 13. Coupling, 14. Shaft coupling, 15. Connecting block, 16. Second slide rail, 17. Lead screw, 18. Display, 200. Locking mechanism, 19. Adjusting rod, 20. Locking bolt, 21. Handle, 22. Crank, 23. Mounting plate. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0023] Referring to the appended Figure 1 , this embodiment provides a film roll cantilever cutting mechanism, including a bracket 1. A slide block 2 is slidably arranged on the bracket 1. An upper air cylinder 3 and a lower air cylinder 4 are respectively connected to the upper end and the lower end of the slide block 2. The piston rod of the lower air cylinder 4 always jacks up the slide block 2 upwards. The upper air cylinder 3 is connected with a proportional valve 5 and a switch valve 6. The upper air cylinder 3 adjusts the downward pressure of the slide block 2 through the proportional valve 5. An upper knife roller 7 is rotatably arranged on the slide block 2. The upper knife roller 7 is connected with a driving mechanism 100. A lower back roller 8 is arranged below the upper knife roller 7. The lower back roller 8 is rotatably arranged on the bracket 1. Open the switch valve 6, and then adjust the downward pressure of the piston rod of the upper air cylinder 3 through the proportional valve 5, so as to adjust the gap between the upper knife roller 7 and the lower back roller 8. Compared with the traditional gap adjustment according to the adjusting screw rod, this adjustment method is more relaxed and convenient. When the cutting mechanism needs to pass through the die or be debugged and maintained, the solenoid valve is disconnected, and the upper knife roller 7 automatically bounces upwards under the action of the lower air cylinder 4 to facilitate the employees to pass through the die or perform maintenance.

[0024] As another embodiment of the present invention: One end of the upper knife roller 7 is rotatably arranged on the slider 2, and one end of the lower back roller 8 is rotatably arranged on the bracket 1.

[0025] As another embodiment of the present invention: A base 9 is provided below the bracket 1, and the bracket 1 slides horizontally along the base 9. This setting can move the upper knife roller 7 and the lower back roller 8 on the bracket 1 to the outside, which is convenient for quick installation and maintenance.

[0026] As another embodiment of the present invention: A plurality of first slide rails 10 are fixed on the bracket 1, and the slider 2 is slidably connected to the first slide rails 10. The first slide rails 10 are distributed at the front end and the rear end of the slider 2. Specifically, there are four first slide rails 10.

[0027] One embodiment of the drive mechanism 100: Refer to the attached Figure 2 , the drive mechanism 100 includes: a motor 11, a speed reducer 12 and a coupling 13. The speed reducer 12 is respectively fixed to the motor 11 and the coupling 13, the coupling 13 is fixedly connected to the upper knife roller 7, and the motor 11 and the speed reducer 12 are fixed on the slider 2 through the coupling 13.

[0028] As another embodiment of the present invention: A connecting shaft 14 is fixed inside the upper knife roller 7. The connecting shaft 14 is rotatably connected to the slider 2, the connecting shaft 14 is fixedly connected to the coupling 13, the coupling 13 and the upper knife roller 7 are respectively located at the rear end and the front end of the slider 2, and a deep groove ball bearing is provided between the connecting shaft 14 and the slider 2.

[0029] As another embodiment of the present invention: Replace the lower air cylinder 4 with a spring. After the switch valve 6 is turned off and the upper air cylinder 3 loses pressure, the spring drives the slider 2 to move upward, so that the upper knife roller 7 and the lower back roller 8 are separated.

[0030] As another embodiment of the present invention: A connecting block 15 and a second slide rail 16 are provided between the base 9 and the bracket 1. The bracket 1 is slidably connected to the second slide rail 16. The connecting block 15 and the second slide rail 16 are respectively fixed to the bracket 1 and the base 9. A lead screw 17 is threadedly connected to the connecting block 15, and the lead screw 17 is rotatably arranged on the base 9. Specifically, a crank 22 is fixed on the lead screw 17 to facilitate the rotation of the lead screw 17.

[0031] As another embodiment of the present invention: Refer to the attached Figure 3-4 , this embodiment further includes a mounting plate 23. The mounting plate 23 is provided with an avoidance hole adapted to the bracket 1, and the bracket 1 is installed inside the mounting plate 23, thereby blocking the drive mechanism 100. When maintenance is required, slide along the base 9 to move the bracket 1 out of the mounting plate 23.

[0032] As another embodiment of the present invention: A display 18 is provided on the base 9, and the display 18 is used to display the position of the bracket 1 in real time.

[0033] As another embodiment of the present invention: A locking mechanism 200 for fixing the bracket 1 to the base 9 is provided on the bracket 1.

[0034] As another embodiment of the present invention: The upper end of the bracket 1 is threadedly connected with an adjusting rod 19. The bottom of the adjusting rod 19 is in contact with the upper end of the slider 2. A knob is fixed to the upper end of the adjusting rod 19 to facilitate the rotation of the adjusting rod 19. The upper cylinder 3 adjusts the pressure of the piston rod extending downward through the electro-hydraulic proportional valve 5, thereby adjusting the gap between the upper knife roller 7 and the lower back roller 8. If a higher-precision cutting size is required, fine adjustment can be performed through the adjusting rod 19 to obtain a more accurate downward pressure.

[0035] As another embodiment of the present invention: The locking mechanism 200 includes a locking bolt 20 and a handle 21. The locking bolt 20 is threadedly connected with the bracket 1. One end of the locking bolt 20 is in contact with the second slide rail 16, and the other end is fixedly connected with the handle 21. By rotating the locking bolt 20 through the handle 21, the locking bolt 20 abuts against the second slide rail 16, thereby preventing the bracket 1 from continuing to move on the second slide rail 16, that is, the bracket 1 is fixed to the base 9.

[0036] Specifically, the switching valve 6 is a solenoid valve.

[0037] In the present invention, when membrane threading is required, after the solenoid valve is disconnected, the upper cylinder 3 retracts, and the lower cylinder 4 drives the upper knife roller 7 to rise along the first slide rail 10, leaving space for the operator to complete the membrane threading operation. After the membrane threading operation is completed, the solenoid valve is started, and according to the actual position of the upper knife roller 7, the parameters of the electro-hydraulic proportional valve 5 are set, and the gap between the upper knife roller 7 and the lower back roller 8 is adjusted to a gap that meets the accuracy requirements of the product cutting size. If further improvement in cutting accuracy is required, fine adjustment can be performed through the adjusting rod 19 to meet the cutting requirements. After the solenoid valve is disconnected, it is convenient for membrane threading, replacing the upper knife roller 7 and routine maintenance.

[0038] The present invention realizes high-speed cutting through the driving mechanism 100, meets the production capacity requirements of customers, and has strong structural compatibility, which can meet different specifications of cutting. Secondly, it has high operability and maintainability, saves downtime, and improves production efficiency.

[0039] Finally, it should be noted that: The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A film roll cantilever cutting mechanism, characterized in that, It includes a bracket (1), a slider (2) is slidably arranged on the bracket (1), an upper air cylinder (3) and a lower air cylinder (4) are respectively connected to the upper end and the lower end of the slider (2), the upper air cylinder (3) is connected with a proportional valve (5) and a switching valve (6), the upper air cylinder (3) adjusts the downward pressure of the slider (2) through the proportional valve (5), an upper knife roller (7) is rotatably arranged on the slider (2), the upper knife roller (7) is connected with a driving mechanism (100), a lower back roller (8) is arranged below the upper knife roller (7), and the lower back roller (8) is rotatably arranged on the bracket (1).

2. The film roll cantilever cutting mechanism according to claim 1, wherein, One end of the upper knife roller (7) is rotatably arranged on the slider (2), and one end of the lower back roller (8) is rotatably arranged on the bracket (1).

3. The film roll cantilever cutting mechanism according to claim 1, characterized in that, A base (9) is arranged below the bracket (1), and the bracket (1) slides horizontally along the base (9).

4. The film roll cantilever cutting mechanism according to claim 1, characterized in that A plurality of first slide rails (10) are fixed on the bracket (1), the slider (2) is slidably connected with the first slide rails (10), and the first slide rails (10) are distributed at the front end and the rear end of the slider (2).

5. The film roll cantilever cutting mechanism according to claim 4, wherein, The driving mechanism (100) includes: a motor (11), a speed reducer (12) and a coupling (13), the speed reducer (12) is respectively fixed to the motor (11) and the coupling (13), and the coupling (13) is fixedly connected with the upper knife roller (7).

6. The film roll cantilever cutting mechanism according to claim 5, wherein, A connecting shaft (14) is fixed inside the upper knife roller (7), the connecting shaft (14) is rotatably connected with the slider (2), the connecting shaft (14) is fixedly connected with the coupling (13), and the coupling (13) and the upper knife roller (7) are respectively located at the rear end and the front end of the slider (2).

7. The film roll cantilever cutting mechanism according to claim 2, wherein, A connecting block (15) and a second slide rail (16) are arranged between the base (9) and the bracket (1), the bracket (1) is slidably connected with the second slide rail (16), the connecting block (15) and the second slide rail (16) are respectively fixed to the bracket (1) and the base (9), a lead screw (17) is threadedly connected to the connecting block (15), and the lead screw (17) is rotatably arranged on the base (9).

8. The membrane roll cantilever cutting mechanism according to claim 1, characterized in that, It further includes a mounting plate (23), and the mounting plate (23) is provided with an avoidance hole (300) adapted to the bracket (1).

9. The film roll cantilever cutting mechanism according to claim 7, characterized in that, A locking mechanism (200) for fixing the bracket (1) on the base (9) is arranged on the bracket (1).

10. The film roll cantilever cutting mechanism according to claim 1, characterized in that, An adjusting rod (19) is threadedly connected to the upper end of the bracket (1), and the bottom of the adjusting rod (19) is in contact with the upper end of the slider (2).

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