A tensioning mechanism for a diaphragm slitting machine

Abstract

The utility model relates to mobile communication equipment component technical field, more particularly, it relates to a diaphragm slitting machine tensioning mechanism, including the lifting platform, the inside of lifting platform is provided with the inner chamber, the inner wall both sides of inner chamber all are fixed with the shaft sleeve no.

Description

Technical Field

[0001] This utility model relates to the field of mobile communication equipment component technology, and more specifically, to a diaphragm slitting machine tensioning mechanism. Background Technology

[0002] In modern mobile communication devices, the diaphragm is the core component of the phone's microphone and speaker. Its performance directly affects the quality of audio signal acquisition and reproduction. Unlike the common thin films on the market, the diaphragm is a highly precise thin film structure, usually made of polymer materials.

[0003] The core function of a diaphragm is to convert mechanical vibrations into electrical signals or vice versa. Therefore, it places extremely stringent requirements on the acoustic properties, mechanical strength, surface flatness, and edge smoothness of the material. According to patent announcement number CN211098429U, a biaxial, dual-mass self-synchronizing inertial shear vibration membrane separator is disclosed. This mainly addresses the problems of poor purification effect, low production efficiency, and secondary pollution associated with existing industrial wastewater treatment methods. This biaxial, dual-mass self-synchronizing inertial shear vibration membrane separator boasts high separation efficiency, a small footprint, low operating costs, and no secondary pollution.

[0004] Currently, during the slitting production of diaphragms, some are processed as whole rolls, while others are processed by cutting a certain length from the roll. However, regardless of whether it is a roll or a strip of fixed length, during slitting, due to the different elasticity of the diaphragm material, there will be different tensions when slitting and conveying it on the same equipment. If the film material is not properly tensioned, quality problems such as slitting skew can easily occur during slitting. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the above-mentioned traditional technology and provide a solution to overcome the above-mentioned technical problems or at least partially solve the above-mentioned problems.

[0006] The objective of this utility model is achieved through the following technical measures: This utility model provides a tensioning mechanism for a diaphragm slitting machine, including a lifting platform. The lifting platform has an inner cavity, and bushings are fixedly installed through both sides of the inner wall of the inner cavity. A shaft is rotatably installed inside the bushings distributed along both sides. A motor is installed at the outer end of the shaft. The outer ring wall of the motor is fixedly installed to the side of the lifting platform through a bracket. A rotating shaft for driving is installed inside the motor, and the end of the rotating shaft is fixedly connected to the shaft by a coupling. The surface of the shaft is provided with two equal and symmetrically distributed external threads. A threaded sleeve is installed on the surface of the external threads. A limiting block is fixedly installed on the outer ring wall of the threaded sleeve. A limiting hole is opened at the upper end of the inner wall of the inner cavity, penetrating its interior. The surface of the limiting block is slidably and tightly attached to the inner wall of the limiting hole. A movable plate is fixedly installed at the upper end of the limiting block.

[0007] Preferably, cylinders are symmetrically distributed on both sides of the lower end of the lifting platform. The cylinders are equipped with piston rods for extension and retraction, and the ends of the piston rods are fixedly installed to the lower end of the lifting platform by screws. The tails of the two cylinders distributed on both sides are jointly installed with the same mounting plate, and the mounting plate is provided with mounting holes that penetrate its interior at the four apex positions.

[0008] Preferably, the upper end of the movable plate is symmetrically distributed and fixed with side plates on both sides, and a bushing two is fixed through the inside of the side plate. The same shaft two is rotatably installed inside the two bushing two distributed on both sides.

[0009] Preferably, a tension roller is fixedly sleeved on the surface of the second shaft, a motor is provided at the outer end of the second shaft, a rotating shaft for driving is provided inside the motor, and the end of the rotating shaft is fixedly connected to the connection position of the second shaft through a coupling.

[0010] Preferably, an extension plate is fixedly installed on one side of the side plate, and the outer ring wall of the second motor is fixedly installed to the surface of the extension plate through a bracket.

[0011] Preferably, slide blocks are fixedly installed on both the front and rear sides of the lifting platform, and sliders are fixedly installed on both sides of the lower end of the moving plate via brackets, with the surface of the sliders slidingly and tightly attached to the inner side of the slide blocks.

[0012] Preferably, a support frame is provided above the middle position of the lifting platform. The support frame has a U-shaped structure and is arranged parallel to the moving plate. Connecting rods are fixedly installed on both sides of the lower end of the support frame, and the other end of the connecting rods is fixed to the surface of the lifting platform.

[0013] Preferably, bearings are embedded and fixed on both sides of the support frame, and the same shaft three is fixedly fixed through the inside of the bearings on both sides. The surface of the shaft three is interference-fitted with the inner ring wall of any one of the bearings, and a tension roller two is fixedly sleeved on the surface of the shaft three.

[0014] The targeted solution provided by this utility model has the following beneficial effects: This invention employs a symmetrical threaded transmission design driven by a servo motor, enabling precise synchronous opposing movement of two moving plates. This, in turn, drives the tension roller one to adjust its position. The symmetrical movement not only effectively enhances the adaptability of the mechanism during the tensioning process but also allows for flexible adjustment of the tensioning gap based on the characteristics of different film materials. When tensioning film materials with high elasticity, this design significantly enhances the tensioning effect without changing the cylinder stroke, avoiding instability caused by insufficient stroke. This ensures the continuity of the slitting process and the processing quality. Structurally, this invention utilizes multiple guiding and supporting designs, such as the cooperation between the slider and the slide block, and the sliding of the limiting block and the limiting hole, effectively enhancing the stability and rigidity of the moving plates and the tension roller during movement. Furthermore, by setting auxiliary support components such as support frames, connecting rods, and bearings, the installation stability of the tension roller two is further improved. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a front structural diagram of the lifting platform in this utility model.

[0017] Figure 3 This is a schematic diagram of the internal structure of the lifting platform in this utility model.

[0018] Figure 4 This is a side view of the lifting platform in this utility model.

[0019] Figure 5 This is a partial structural diagram of the support frame in this utility model.

[0020] In the diagram: 1. Lifting platform; 10. Inner cavity; 11. Bushing 1; 12. Shaft 1; 13. External thread; 14. Threaded sleeve; 15. Limiting hole; 16. Limiting block; 17. Moving plate; 18. Motor 1; 101. Cylinder; 102. Mounting plate; 103. Mounting hole; 2. Side plate; 21. Bushing 2; 22. Shaft 2; 23. Tensioning roller 1; 24. Motor 2; 25. Extension plate; 201. Slider; 202. Slide seat; 3. Support frame; 31. Bearing; 32. Shaft 3; 33. Tensioning roller 2; 34. Connecting rod. Detailed Implementation

[0021] Example: Refer to Figures 1-5This utility model provides a technical solution: a tensioning mechanism for a diaphragm slitting machine, including a lifting platform 1. The lifting platform 1 has an inner cavity 10 inside. Both sides of the inner wall of the inner cavity 10 are fixedly fitted with bushings 11. A shaft 12 is rotatably installed inside the bushings 11 distributed along both sides. A motor 18 is installed at the outer end of the shaft 12. The outer ring wall of the motor 18 is fixedly installed to the side of the lifting platform 1 through a bracket. The motor 18 has a rotating shaft for driving inside. The end of the rotating shaft is fixedly connected to the shaft 12 through a coupling. The motor 18 is a servo type. Its servo controller is connected to a PLC CNC console. The forward and reverse rotation of the motor 18 can be precisely controlled by the forward and reverse switch on the CNC console. When the motor 18 is powered on, the rotating shaft rotates, thereby causing the shaft 12 to rotate and driving the external thread 13 to rotate, which in turn causes the threaded sleeve 14 to move.

[0022] The surface of shaft 12 is provided with two equal and symmetrically distributed external threads 13. A threaded sleeve 14 is threadedly installed on the surface of the external threads 13. A limiting block 16 is fixedly installed on the outer ring wall of the threaded sleeve 14. A limiting hole 15 is opened at the upper end of the inner wall of the inner cavity 10, penetrating its interior. The surface of the limiting block 16 is slidably attached to the inner wall of the limiting hole 15. A movable plate 17 is fixedly installed at the upper end of the limiting block 16. After the threaded sleeve 14 moves, the two movable plates 17 are adjusted synchronously towards or away from each other by the sliding of the limiting block 16 on the inner wall of the limiting hole 15 and the symmetrical arrangement of the external threads 13, thereby adjusting the corresponding tension roller 23.

[0023] Among them, cylinders 101 are symmetrically distributed on both sides of the lower end of the lifting platform 1. The cylinder 101 has a piston rod for extension and retraction inside, and the end of the piston rod is fixed to the lower end of the lifting platform 1 by screws. The tails of the two cylinders 101 distributed on both sides are jointly mounted on the same mounting plate 102. The mounting plate 102 has mounting holes 103 through it at the four corners. The cylinder 101 is a servo type, and its servo controller is connected to the PLC CNC console. Through the precise control of the cylinder switch, the lifting and lowering adjustment of tension roller 1 23 and tension roller 2 33 is realized, thereby adjusting the tension of the film material passing through them during slitting.

[0024] Among them, the upper end of the movable plate 17 is symmetrically distributed and fixed with side plates 2, and the inside of the side plate 2 is fixed with bushing 21. The two bushings 21 distributed on both sides are rotatably installed with the same shaft 22, and the shaft 22 can rotate stably based on the bushing 21.

[0025] The tension roller 23 is fixedly sleeved on the surface of shaft 22. Motor 24 is installed at the outer end of shaft 22. The motor 24 has a rotating shaft 2 inside for driving. The end of the rotating shaft 2 is fixedly connected to shaft 22 through a coupling. Motor 24 is a servo type. Its servo controller is connected to PLC CNC table through wires. The rotation of the rotating shaft 2 is adjusted by the corresponding speed switch, so that shaft 22 can rotate. The tension roller 23, which can move in opposite directions on both sides, can maximize the adaptability of the tensioning process. If only a single tension roller 23 is set, it will cause the pushing distance to increase when the film material is elastic. If the stroke of cylinder 101 is not enough, stable tension cannot be achieved, which will hinder the processing. The tension roller 23, which can extend or retract and move on both sides, can improve the tensioning effect when pushing to the same height.

[0026] An extension plate 25 is fixedly installed on one side of the side plate 2. The outer ring wall of the second motor 24 is fixedly installed on the surface of the extension plate 25 through a bracket. The extension plate 25 can ensure the stability of the installation position of the second motor 24. The drive of the second motor 24 allows the tension roller 23 to rotate appropriately, which can play an auxiliary transmission effect when the film material passes through, and avoid affecting the normal conveying of the film material after tensioning.

[0027] The lifting platform 1 is fixedly installed with slide blocks 202 on both the front and rear sides. The lower end of the moving plate 17 is fixedly installed with sliders 201 on both sides by brackets. The surface of the sliders 201 is slidably and tightly attached to the inner side of the slide blocks 202. By sliding the sliders 201 on the slide blocks 202, the moving plate 17 can be moved and moved to provide support.

[0028] The support frame 3 is located above the middle of the lifting platform 1. The support frame 3 has a U-shaped structure and is arranged parallel to the moving plate 17. Connecting rods 34 are fixedly installed on both sides of the lower end of the support frame 3. The other end of the connecting rods 34 is fixed to the surface of the lifting platform 1. The connecting rods 34 can provide auxiliary reinforcement and support for the support frame 3 on both sides.

[0029] Among them, bearings 31 are embedded and fixed on both sides of the support frame 3, and the same shaft 32 is fixed through the inside of the bearings 31 on both sides. The surface of the shaft 32 is interference-fitted with the inner ring wall of any one of the bearings 31. Tensioning roller 2 33 is fixedly sleeved on the surface of the shaft 32. Tensioning roller 2 33 can be used as a basic push tensioning structure for the film material, and is a tensioning structure combined with the stroke of tensioning roller 1 23.

[0030] Working principle: The lifting platform 1 of this solution has an internal cavity 10. Bushings 11 are fixed to both sides of the inner wall of the cavity 10. A shaft 12 is rotatably mounted inside the bushings 11. The outer end of the shaft 12 is connected to a motor 18. The motor 18 is fixed to the side of the lifting platform 1 by a bracket. Its rotating shaft is connected to the shaft 12 via a coupling. The motor 18 is a servo motor, controlled by a PLC CNC console for forward and reverse rotation. When the motor 18 is powered on, the rotating shaft rotates, driving the shaft 12 to rotate. The shaft 12 has two symmetrically distributed external threads 13 on its surface. A threaded sleeve 14 is installed on the external threads 13. A limit block 16 is fixed on the outer ring of the threaded sleeve 14. A limit hole 15 is opened at the upper end of the inner cavity 10. The limit block 16 slides in the limit hole 15. Because the external threads 13 are symmetrically arranged, when the threaded sleeve 14 moves, the two moving plates 17 move towards or away from each other synchronously through the cooperation of the limit block 16 and the limit hole 15, thereby adjusting the position of the tension roller 23 and realizing the tension adjustment of the film material.

[0031] Cylinders 101 are symmetrically mounted on the lower end of the lifting platform 1. The piston rods of the cylinders 101 are fixed to the lifting platform 1 with screws. The tails of the two cylinders 101 are connected to the mounting plate 102. The mounting plate 102 has mounting holes 103 at its four corners. The cylinders 101 are servo-type and controlled by a PLC CNC console. The piston rod extension and retraction are precisely adjusted by the cylinder switch, which drives the lifting platform 1 to rise and fall as a whole, thereby adjusting the height of tension roller 1 23 and tension roller 2 33. Tension roller 1 23 is fixed to the moving plate 17 by the side plate 2. The side plate 2 has a bushing 21 inside. Shaft 22 is rotatably mounted inside bushing 21. Tensioning roller 23 is fixed on the surface of shaft 22, and motor 24 is connected to its outer end. Motor 24 is fixed on extension plate 25 by bracket. Its rotating shaft is connected to shaft 22 via coupling. Motor 24 is a servo type, and its speed is controlled by PLC CNC console to drive shaft 22 to rotate. This combined tensioning structure improves the tensioning effect by adjusting the translation of moving plate 17 when the stroke of cylinder 101 is limited. It is especially suitable for films with high elasticity and ensures the stability of the processing process.

[0032] The support frame 3, as an auxiliary tensioning structure, is located above the middle of the lifting platform 1 and has a U-shaped structure. It is fixed to the surface of the lifting platform 1 by the connecting rod 34. Bearings 31 are embedded on both sides of the support frame 3. The shaft 32 passes through the bearings 31 and is interference-fitted. Tensioning roller 23 is fixed on the surface of shaft 32. Tensioning roller 23 and tensioning roller 123 form a combined tensioning system. The lower end of the moving plate 17 is fixed to the slider 201 by the bracket. The slider 201 slides in the slide seats 202 on the front and rear sides of the lifting platform 1, which cooperates with the displacement of the moving plate 17 and provides support. When the film material passes through tensioning roller 123 and tensioning roller 233, the overall height is adjusted by the cylinder 101. At the same time, the motor 18 drives the shaft 12 to rotate, so that the moving plate 17 moves synchronously in opposite directions, changing the position of tensioning roller 123. The motor 24 can independently control the speed of tensioning roller 123 to enhance the tensioning adaptability.

Claims

1. A tensioning mechanism for a diaphragm slitting machine, comprising a lifting platform (1), characterized in that: The lifting platform (1) has an inner cavity (10) inside. Both sides of the inner wall of the inner cavity (10) are fixed with bushings (11). The bushings (11) distributed on both sides are rotatably installed with shafts (12). The outer end of the shafts (12) is provided with a motor (18). The outer ring wall of the motor (18) is fixedly installed with the side of the lifting platform (1) through a bracket. The motor (18) is provided with a rotating shaft for driving inside. The end of the rotating shaft and the connection position of the shaft (12) are fixedly connected by a coupling. The surface of the shaft (12) is provided with two equal and symmetrically distributed external threads (13). A threaded sleeve (14) is threaded on the surface of the external threads (13). A limiting block (16) is fixedly installed on the outer ring wall of the threaded sleeve (14). A limiting hole (15) penetrating through the inner wall of the inner cavity (10) is provided at the upper end of the inner wall. The surface of the limiting block (16) is slidably attached to the inner wall of the limiting hole (15). A movable plate (17) is fixedly installed at the upper end of the limiting block (16).

2. The tensioning mechanism of a diaphragm slitting machine according to claim 1, characterized in that: The lower end of the lifting platform (1) is symmetrically arranged with cylinders (101) on both sides. The cylinders (101) are equipped with piston rods for extension and retraction. The end of the piston rods is fixedly installed to the lower end of the lifting platform (1) by screws. The tail ends of the two cylinders (101) distributed on both sides are jointly installed with the same mounting plate (102). The mounting plate (102) is provided with mounting holes (103) distributed at the four corners.

3. The tensioning mechanism of a diaphragm slitting machine according to claim 2, characterized in that: The upper end of the movable plate (17) is symmetrically distributed with side plates (2) fixed on both sides. The inside of the side plate (2) is fixed with bushing two (21). The two bushing two (21) distributed on both sides are rotatably installed with the same shaft two (22).

4. The tensioning mechanism of a diaphragm slitting machine according to claim 3, characterized in that: Tensioning roller 1 (23) is fixedly sleeved on the surface of shaft 2 (22). Motor 2 (24) is provided at the outer end of shaft 2 (22). A rotating shaft 2 for driving is provided inside motor 2 (24). The end of rotating shaft 2 is fixedly connected to shaft 2 (22) through a coupling.

5. The tensioning mechanism of a diaphragm slitting machine according to claim 4, characterized in that: An extension plate (25) is fixedly installed on one side of the side plate (2), and the outer ring wall of the second motor (24) is fixedly installed on the surface of the extension plate (25) through a bracket.

6. The tensioning mechanism of a diaphragm slitting machine according to claim 5, characterized in that: The lifting platform (1) is fixedly installed with slide seats (202) on both the front and rear sides. The lower end of the moving plate (17) is fixedly installed with sliders (201) on both sides by brackets. The surface of the slider (201) is slidably attached to the inner side of the slide seat (202).

7. The tensioning mechanism of a diaphragm slitting machine according to claim 6, characterized in that: A support frame (3) is provided above the middle position of the lifting platform (1). The support frame (3) has a U-shaped structure and is arranged parallel to the moving plate (17). Connecting rods (34) are fixedly installed on both sides of the lower end of the support frame (3). The other end of the connecting rods (34) is fixed to the surface of the lifting platform (1).

8. The tensioning mechanism of a diaphragm slitting machine according to claim 7, characterized in that: Bearings (31) are embedded and fixed on both sides of the support frame (3). The same shaft three (32) is fixed through the inside of the bearings (31) on both sides. The surface of the shaft three (32) is interference-fitted with the inner ring wall of any bearing (31). Tensioning roller two (33) is fixedly sleeved on the surface of the shaft three (32).

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