Unreeling mechanism of laminating machine

Abstract

The utility model discloses an unwinding mechanism of a laminating machine, relates to the technical field of laminating unwinding mechanisms, and aims to solve the problems that in the prior art, the connection degree of roll loading and unloading work of an existing unwinding mechanism of the laminating machine is not high, roll loading and unloading work operation is complex, and production efficiency is affected. The second rotating device is rotationally connected with a conversion frame, roller grooves are formed in the two ends of the conversion frame, the roller grooves have upward inclined angles, the two ends of the conversion frame are rotationally connected with a first film roll and a second film roll correspondingly, and hollow shafts with inner meshing teeth are arranged on the axes of the first film roll and the second film roll correspondingly. The hollow shafts with the inner meshing teeth of the first film roll and the second film roll are both arranged in the roller grooves, a limiting ring is fixedly installed on the side, close to the first film roll, of the third support, the inner ring of the limiting ring and the inner sides of the roller grooves are both rotationally connected with rotors, and when the conversion frame rotates, the first film roll and the second film roll are driven to rotate. The hollow shafts with the inner meshing teeth of the first film roll and the second film roll are attached to the rotor of the limiting ring.

Description

Technical Field

[0001] This utility model relates to the technical field of coating unwinding mechanism, specifically a coating machine unwinding mechanism. Background Technology

[0002] A coating machine, also known as an extrusion laminating machine, is a type of extrusion molding machinery. It has advantages such as high automation, simple operation, high production speed, uniform coating thickness, high adhesion, flat winding, environmental protection and no pollution, and saving labor and raw material costs. The whole machine is generally composed of feeding device, extruder main unit, mold, unwinding mechanism, laminating mechanism, winding mechanism, edge control device, edge cutting device, heating and cooling system, electrical measurement and control system, etc. However, in the process of use, the existing unwinding mechanism used for high-speed coating machines has many problems or defects.

[0003] For example, in the announcement number CN216548710U, an unwinding mechanism for a high-speed coating machine is disclosed, comprising columns, a cutting assembly movably connected between the columns, a limiting assembly movably connected to the top of the cutting assembly, a second through hole fixedly provided on the top of the limiting assembly, a fixed seat fixedly connected to the top of the second through hole, an insertion post fixedly connected to one side of the fixed seat, a roll of material movably connected to the surface of the insertion post, and an adjusting assembly movably connected to one side of the second through hole.

[0004] The aforementioned application has an adjusting component movably connected to one side of the second through hole, which can drive the second threaded rod to rotate using the output end of the second motor. The rotation of the second threaded rod drives the threaded sleeve to move, and the movement of the threaded sleeve drives the second slider in the second slide groove to move through the first connecting rod. The movement of the second slider drives the moving seat to move, thereby facilitating the replacement of the material roll between the insertion columns by the operator. However, the connection between the upper and lower winding operations of its unwinding mechanism is not high, and the upper and lower winding operations are complicated, affecting production efficiency. Therefore, the market urgently needs to develop an unwinding mechanism for coating machines to help people solve the existing problems. Utility Model Content

[0005] The purpose of this utility model is to provide an unwinding mechanism for a coating machine to solve the problems mentioned in the background art, such as the low degree of connection between the upper and lower winding operations of the current unwinding mechanism of the coating machine, the complexity of the upper and lower winding operations, and the impact on production efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coating machine unwinding mechanism, comprising coating and a first support, a second support, and a third support mounted on a base. A second rotating device is fixedly connected to the third support, and a conversion frame is rotatably connected to the second rotating device. Both ends of the conversion frame are provided with roller grooves, which have an upward inclination angle. A first film roll and a second film roll are rotatably connected to both ends of the conversion frame, respectively. The shafts of the first and second film rolls are each provided with hollow shafts with internal interlocking teeth. The hollow shafts with internal interlocking teeth of the first and second film rolls are all located within the roller grooves. A limiting ring is fixedly installed on the third support near the first film roll. A rotor is rotatably connected to the inner ring of the limiting ring and the inner side of the roller groove. When the conversion frame rotates, the hollow shafts with internal interlocking teeth of the first and second film rolls are in contact with the rotor of the limiting ring.

[0007] Through the above technical solution, two film rolls can be installed simultaneously using the conversion frame. When the first film roll is being unwound, the second film roll can be directly mounted on the frame. The connection between the film roll and the conversion frame is open, making the mounting process very convenient and not interfering with the unwinding process. The roll changing process only requires driving the conversion frame to rotate. When the film roll rotates to the unwinding station, a limiting ring is used to prevent the film roll from falling off. Thus, the film roll can be fixed and installed at the unwinding station without manual intervention, improving the efficiency of the roll changing process. Moreover, the structure is simple and the operation is more convenient.

[0008] In a preferred embodiment, the present invention can be further configured as follows: an electric telescopic mechanism is fixedly connected to the third support, a second driving device is fixedly connected to the lifting end of the electric telescopic mechanism, a biting shaft is fixedly connected to the driving end of the second driving device, and the biting shaft is engaged with a hollow shaft with internal biting teeth.

[0009] Through the above technical solution, the longitudinal position of the second drive device can be adjusted by using an electric telescopic machine, so that during the roll changing operation, the biting shaft can be pulled out from the hollow shaft of the biting teeth inside the belt, and after the roll changing is completed, the biting shaft can be inserted back into the hollow shaft of the biting teeth inside the belt.

[0010] In a preferred embodiment, the present invention can be further configured as follows: a locking groove is provided on the front end face of the conversion frame, two locking grooves are provided, a locking device is fixedly connected to the third support, a locking head is slidably connected to the inner side of the locking device, and when the conversion frame is in a horizontal state, the locking head is engaged with the locking groove.

[0011] By using the above technical solution, the conversion frame is fixed by a locking device, which makes the film roll more stable when rotating, improves the stability during unwinding, and avoids damage to the second rotating device due to excessive force.

[0012] In a preferred embodiment, the present invention can be further configured as follows: a screw is rotatably connected inside the locking device, the locking head is threadedly connected to the screw, a second driven wheel is fixedly connected to one end of the screw, a second motor is fixedly connected inside the locking device, a second drive wheel is fixedly connected to the drive end of the second motor, and the second drive wheel is drively connected to the second driven wheel.

[0013] The above technical solution utilizes a second motor to drive the second drive wheel to rotate, and the second drive wheel drives the screw to rotate through the second driven wheel. The rotation of the screw drives the locking head to move laterally.

[0014] In a preferred embodiment, the present invention can be further configured as follows: a first rotating device is fixedly connected to the second support, a tension control frame is rotatably connected to the second support, a first tension roller and a second tension roller are rotatably connected to both ends of the tension control frame, and the coating passes through the lower part of the first tension roller and the upper part of the second tension roller.

[0015] The above technical solution utilizes tension rollers at both ends of the tension control frame to control the tension of the coating film during unwinding. By rotating the tension control frame, the coating film is stretched between the two tension rollers. Compared with traditional tension adjustment methods, the structure is simpler, and the adjustable tension range is wider. This makes it more suitable for meeting the tension requirements of different films and improves the reliability of unwinding.

[0016] In a preferred embodiment, the present invention can be further configured as follows: a worm gear is provided inside the first rotating device, the worm gear is fixedly connected to the conversion frame via a shaft, a worm is rotatably connected inside the first rotating device, the worm is meshed with the worm gear, a first driven wheel is fixedly connected to one end of the worm, a first motor is fixedly connected inside the first rotating device, a first drive wheel is fixedly connected to the drive end of the first motor, the first drive wheel and the first driven wheel are connected in a transmission connection, and the second rotating device has the same structure as the first rotating device.

[0017] The above technical solution utilizes a first motor to drive the first drive wheel to rotate, the first drive wheel drives the worm to rotate through the first driven wheel, the worm drives the worm wheel to rotate, and the worm wheel is connected to the conversion frame, thereby driving the conversion frame to rotate.

[0018] In a preferred embodiment, the present invention can be further configured such that: a first conveying roller and a second conveying roller are rotatably connected to the first support, the coating passes through the upper part of the first conveying roller and the lower part of the second conveying roller respectively, and a first driving device for driving the second conveying roller to rotate is provided on the first support.

[0019] The above technical solution utilizes a first driving device to drive the second conveying roller to rotate, thereby assisting in the unwinding of the coating film during the unwinding process.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This utility model utilizes a conversion frame to simultaneously mount two film rolls. When the first film roll is being unwound, the second film roll can be directly mounted onto the frame. The connection between the film roll and the conversion frame is open, making mounting very convenient and not interfering with the unwinding process. The roll changing operation only requires driving the conversion frame to rotate. When the film roll rotates to the unwinding station, a limiting ring is used to prevent the film roll from falling off. Thus, manual mounting of the film roll to the unwinding station is not required, improving the efficiency of the roll changing operation. The structure is simple and the operation is more convenient.

[0022] 2. This utility model utilizes tension rollers at both ends of the tension control frame to control the tension of the coating film during unwinding. By rotating the tension control frame, the coating film is stretched between the two tension rollers. Compared with traditional tension adjustment methods, the structure is simpler, and the adjustable tension range is wider. It can better meet the tension requirements of different films and improve the reliability of unwinding. Attached Figure Description

[0023] Figure 1 This is a front view of the unwinding mechanism of a coating machine according to the present invention;

[0024] Figure 2 This is a front view of the conversion frame of this utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of the first rotating device of this utility model;

[0026] Figure 4 This is a side view of the second driving device of this utility model;

[0027] Figure 5 This is a front view of the engagement shaft of this utility model;

[0028] Figure 6 This is a schematic diagram of the internal structure of the locking device of this utility model.

[0029] In the diagram: 1. Base; 2. First support; 3. Second support; 4. Third support; 5. First conveyor roller; 6. Second conveyor roller; 7. First drive device; 8. Tension control frame; 9. First rotating device; 10. First tension roller; 11. Second tension roller; 12. Second rotating device; 13. Transfer frame; 14. First film roll; 15. Second film roll; 16. Electric telescopic mechanism; 17. Second drive device; 18. Locking device; 19. Limiting ring; 20. Locking groove; 21. Roller groove; 22. Hollow shaft with internal meshing teeth; 23. Worm gear; 24. Worm; 25. First motor; 26. First drive wheel; 27. First driven wheel; 28. Meshing shaft; 29. ​​Second motor; 30. Locking head; 31. Screw; 32. Second drive wheel; 33. Second driven wheel. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] Please see Figure 1 and Figure 2This utility model provides an embodiment of a coating machine unwinding mechanism, including a coating film and a first support 2, a second support 3, and a third support 4 mounted on a base 1. A second rotating device 12 is fixedly connected to the third support 4, and a conversion frame 13 is rotatably connected to the second rotating device 12. Both ends of the conversion frame 13 are provided with roller grooves 21, which have an upward inclination angle. A first film roll 14 and a second film roll 15 are rotatably connected to both ends of the conversion frame 13, respectively. The shafts of both the first film roll 14 and the second film roll 15 are provided with hollow shafts 22 with internal interlocking teeth. The hollow shafts 22 with internal interlocking teeth of roll 14 and the second roll 15 are both set inside the roller groove 21. A limiting ring 19 is fixedly installed on the side of the third support 4 near the first roll 14. The inner ring of the limiting ring 19 and the inner side of the roller groove 21 are rotatably connected to rotors. When the conversion frame 13 rotates, the hollow shafts 22 with internal interlocking teeth of the first roll 14 and the second roll 15 are both in contact with the rotor of the limiting ring 19. The limiting ring 19 and the conversion frame 13 are misaligned. When the conversion frame 13 rotates, the limiting ring 19 does not interfere. When the hollow shafts 22 with internal interlocking teeth rotate, the rotor reduces the friction.

[0034] Please see Figure 1 , Figure 2 , Figure 4 and Figure 5 An electric telescopic mechanism 16 is fixedly connected to the third support 4. A second drive device 17 is fixedly connected to the lifting end of the electric telescopic mechanism 16. A biting shaft 28 is fixedly connected to the driving end of the second drive device 17. The biting shaft 28 is engaged with the hollow shaft 22 with internal biting teeth. The second drive device 17 can drive the biting shaft 28 to rotate at a low speed, so that the biting shaft 28 can first be embedded in the hollow shaft 22 with internal biting teeth before driving the membrane roll to rotate.

[0035] Please see Figure 1 , Figure 2 and Figure 6 The front end face of the conversion frame 13 is provided with a locking groove 20. There are two locking grooves 20. A locking device 18 is fixedly connected to the third support 4. A locking head 30 is slidably connected to the inner side of the locking device 18. When the conversion frame 13 is in a horizontal state, the locking head 30 is engaged with the locking groove 20.

[0036] Please see Figure 6 A screw 31 is rotatably connected inside the locking device 18. The locking head 30 is threadedly connected to the screw 31. A second driven wheel 33 is fixedly connected to one end of the screw 31. A second motor 29 is fixedly connected inside the locking device 18. A second drive wheel 32 is fixedly connected to the drive end of the second motor 29. The second drive wheel 32 and the second driven wheel 33 are connected by a belt drive.

[0037] Please see Figure 1A first rotating device 9 is fixedly connected to the second support 3, and a tension control frame 8 is rotatably connected to the second support 3. A first tension roller 10 and a second tension roller 11 are rotatably connected to both ends of the tension control frame 8, and the coating passes through the lower part of the first tension roller 10 and the upper part of the second tension roller 11.

[0038] Please see Figure 3 The first rotating device 9 is equipped with a worm gear 23, which is fixedly connected to the conversion frame 13 via a shaft. A worm 24 is rotatably connected to the first rotating device 9, and the worm 24 is meshed with the worm gear 23. A first driven wheel 27 is fixedly connected to one end of the worm 24. A first motor 25 is fixedly connected to the first rotating device 9, and a first drive wheel 26 is fixedly connected to the drive end of the first motor 25. The first drive wheel 26 and the first driven wheel 27 are connected in a transmission connection. The second rotating device 12 has the same structure as the first rotating device 9, and the first drive wheel 26 and the first driven wheel 27 are driven by a belt.

[0039] Please see Figure 1 A first conveying roller 5 and a second conveying roller 6 are rotatably connected to a first support 2. The coating passes above the first conveying roller 5 and below the second conveying roller 6 respectively. A first driving device 7 for driving the second conveying roller 6 to rotate is provided on the first support 2.

[0040] Working principle: In use, the coating end on the first film roll 14 is pulled out, passing under the first tension roller 10, above the second tension roller 11, above the first conveyor roller 5, and below the second conveyor roller 6. Then, the second drive device 17 and the first drive device 7 are started, driving the first drive device 7 and the second conveyor roller 6 to rotate respectively. The first motor 25 drives the first drive wheel 26 to rotate. The first drive wheel 26 drives the worm gear 24 to rotate through the first driven wheel 27. The worm gear 24 drives the tension control frame 8 to rotate through the worm wheel 23. Thus, the first tension roller 10 and the second tension roller 11 are used to stretch the coating film and adjust the tension of the coating film. Then, the coating film is unwound, and at the same time, the second film roll 15 is placed into the roller groove 21 at the other end of the conversion frame 13. After the first film roll 14 is unwound, the electric telescopic mechanism 16 is used to move the second drive device 14 to the other end of the conversion frame 13. The engagement shaft 28 of the first film roll 14 is pulled out from the hollow shaft 22 with internal engagement teeth. The locking device 18 pulls the locking head 30 out from the locking groove 20. Then, the second rotating device 12 drives the conversion frame 13 to rotate, and the first film roll 14 is directly unloaded by gravity. At the same time, the second film roll 15 is rotated to the unwinding position. When the conversion frame 13 rotates to a horizontal position, the second motor 29 drives the second drive wheel 32 to rotate. The second drive wheel 32 drives the screw 31 to rotate through the second driven wheel 33. The rotation of the screw 31 drives the locking head 30 to move laterally. The locking head 30 is inserted into the locking groove 20 again to fix the conversion frame 13. Then, the engagement shaft 28 is inserted into the hollow shaft 22 with internal engagement teeth of the second film roll 15 again. Thus, the second driving device 17 can drive the second film roll 15 to rotate for unwinding.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A coating machine unwinding mechanism, comprising coating and a first support (2), a second support (3), and a third support (4) mounted on a base (1), characterized in that: A second rotating device (12) is fixedly connected to the third support (4), and a conversion frame (13) is rotatably connected to the second rotating device (12). Both ends of the conversion frame (13) are provided with roller grooves (21), which have an upward tilting angle. A first film roll (14) and a second film roll (15) are rotatably connected to both ends of the conversion frame (13). The first film roll (14) and the second film roll (15) each have a hollow shaft (22) with internal interlocking teeth at their axis. The hollow shafts (22) with inner interlocking teeth of the first film roll (14) and the second film roll (15) are both set in the roller groove (21). A limiting ring (19) is fixedly installed on the side of the third support (4) near the first film roll (14). The inner ring of the limiting ring (19) and the inner side of the roller groove (21) are rotatably connected to the rotor. When the conversion frame (13) rotates, the hollow shafts (22) with inner interlocking teeth of the first film roll (14) and the second film roll (15) are both in contact with the rotor of the limiting ring (19).

2. The unwinding mechanism of a coating machine according to claim 1, characterized in that: An electric telescopic machine (16) is fixedly connected to the third support (4). A second drive device (17) is fixedly connected to the lifting end of the electric telescopic machine (16). A biting shaft (28) is fixedly connected to the driving end of the second drive device (17). The biting shaft (28) is engaged with a hollow shaft (22) with internal biting teeth.

3. The unwinding mechanism of a coating machine according to claim 1, characterized in that: The front end face of the conversion frame (13) is provided with a locking groove (20), and there are two locking grooves (20). A locking device (18) is fixedly connected to the third support (4). A locking head (30) is slidably connected to the inner side of the locking device (18). When the conversion frame (13) is in a horizontal state, the locking head (30) is engaged with the locking groove (20).

4. The unwinding mechanism of a coating machine according to claim 3, characterized in that: A screw (31) is rotatably connected inside the locking device (18), and the locking head (30) is threadedly connected to the screw (31). A second driven wheel (33) is fixedly connected to one end of the screw (31). A second motor (29) is fixedly connected inside the locking device (18), and a second drive wheel (32) is fixedly connected to the drive end of the second motor (29). The second drive wheel (32) and the second driven wheel (33) are connected in a transmission connection.

5. The unwinding mechanism of a coating machine according to claim 1, characterized in that: A first rotating device (9) is fixedly connected to the second support (3), and a tension control frame (8) is rotatably connected to the second support (3). A first tension roller (10) and a second tension roller (11) are rotatably connected to both ends of the tension control frame (8). The coating passes through the lower part of the first tension roller (10) and the upper part of the second tension roller (11).

6. The unwinding mechanism of a coating machine according to claim 5, characterized in that: The first rotating device (9) is provided with a worm gear (23), which is fixedly connected to the conversion frame (13) through a shaft. The first rotating device (9) is rotatably connected with a worm (24), which is meshed with the worm gear (23). One end of the worm (24) is fixedly connected with a first driven wheel (27). The first rotating device (9) is fixedly connected with a first motor (25), and the driving end of the first motor (25) is fixedly connected with a first driving wheel (26). The first driving wheel (26) is connected to the first driven wheel (27) in a transmission connection. The second rotating device (12) has the same structure as the first rotating device (9).

7. The unwinding mechanism of a coating machine according to claim 1, characterized in that: The first support (2) is vertically mounted and rotatably connected to a first conveying roller (5) and a second conveying roller (6). The coating passes above the first conveying roller (5) and below the second conveying roller (6). The first support (2) is provided with a first driving device (7) for driving the second conveying roller (6) to rotate.

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