A folding machine unwinding structure

Abstract

This utility model relates to the field of folding machine technology, specifically to a folding machine unwinding structure, including a support frame. An unwinding assembly is located in the middle of the support frame, comprising a fixed bearing, a servo motor, a connecting shaft, a contact plate, a support shaft, and a fixed torsion spring. A take-up drum is sleeved onto the surface of the support shaft, and a roll of non-woven fabric is wound around its surface. A pressing assembly is located at the upper end of the support frame, comprising an adjusting frame, a transmission screw, a linear guide rail, an electric motor, a connecting frame, a transmission block, a linear bearing, a limit rod, a mounting frame, a pressure roller, and a support spring. The electric motor, in conjunction with the transmission screw, continuously pushes the connecting frame downwards, ensuring close contact between the pressure roller and the surface of the non-woven fabric roll, maintaining uniform pressure. The pressure roller rotates as the non-woven fabric roll is unwound, and the pressure applied to the pressure roller can be adjusted according to the type of non-woven fabric, effectively preventing wear on the non-woven fabric roll and improving product quality.

Description

Technical Field

[0001] This utility model relates to the field of folding machine technology, specifically to a folding machine unwinding structure. Background Technology

[0002] A nonwoven fabric folding machine is a device used to fold nonwoven fabrics according to specific requirements. It is widely used in medical dressings, hygiene products, packaging materials and other fields. In order to tension the nonwoven fabric, the existing technology uses a pressure bar to press down the nonwoven fabric roll, that is, to increase the damping of the rotation of the nonwoven fabric roll, so as to achieve tension of the nonwoven fabric.

[0003] However, in actual use, the tensioning effect of the pressure bar on the nonwoven fabric roll is unstable, and the pressure bar pressing on the surface of the nonwoven fabric may cause wear.

[0004] Therefore, it is necessary to invent a folding machine unwinding structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a folding machine unwinding structure to solve the problems of unstable tensioning effect of the pressure bar on the nonwoven fabric roll and the potential wear caused by the pressure bar pressing on the surface of the nonwoven fabric.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a folding machine unwinding structure, including a support frame, an unwinding assembly provided in the middle of the support frame, the unwinding assembly including a fixed bearing, a servo motor, a connecting shaft, an abutment plate, a support shaft and a fixed torsion spring, a winding drum sleeved and connected to the surface of the support shaft, a non-woven fabric roll wound on the surface of the winding drum, and a pressing assembly provided at the upper end of the support frame, the pressing assembly including an adjusting frame, a transmission screw, a linear guide rail, an electric motor, a connecting frame, a transmission block, a linear bearing, a limit rod, a mounting frame, a pressure roller and a support spring.

[0007] By adopting the above technical solution, the servo motor, connecting shaft, and support shaft work together to drive the winding drum and nonwoven fabric roll to rotate, unwinding the nonwoven fabric roll. During the unwinding process, the electric motor drives the transmission screw to rotate, thereby continuously pushing the connecting frame downwards, so that the pressure roller and the surface of the nonwoven fabric roll maintain close contact. The pressure roller will rotate along with the unwinding of the nonwoven fabric roll. At the same time, the pressure applied to the pressure roller can be adjusted according to the different types of nonwoven fabrics, thereby effectively avoiding wear on the nonwoven fabric roll and improving product quality.

[0008] Optionally, the fixed bearing is fixed in the middle of the support frame, the connecting shaft is connected to the fixed bearing, the servo motor is fixedly installed on the rear side of the support frame, and the output end of the servo motor is fixedly connected to the rear end of the connecting shaft.

[0009] By adopting the above technical solution, the output end of the servo motor drives the connecting shaft to rotate inside the fixed bearing.

[0010] Optionally, the abutment plate is fixedly connected to the front end of the connecting shaft, the support shaft is fixedly connected to the center of the abutment plate, and the fixing torsion spring is sleeved on the surface of the support shaft.

[0011] By using the above technical solution, pressing the two ends of the fixed torsion spring inward will cause the torsion spring to expand, and then the fixed torsion spring can be sleeved on the surface of the support shaft. After releasing the two ends of the fixed torsion spring, the fixed torsion spring will retract inward and be fixed on the surface of the support shaft, which facilitates the loading and unloading of nonwoven fabric rolls.

[0012] Optionally, the upper end of the adjusting frame is fixedly connected to the support frame, the two ends of the transmission screw are rotatably connected to the upper and lower inner walls of the adjusting frame near the front side, and the two ends of the linear guide rail are fixedly connected to the upper and lower inner walls of the adjusting frame near the rear side.

[0013] Optionally, the electric motor is fixedly mounted on the upper end of the adjusting frame, and the output end of the electric motor is fixedly connected to the upper end of the transmission screw.

[0014] By adopting the above technical solution, the output end of the electric motor is used to drive the transmission screw to rotate.

[0015] Optionally, the transmission block is fixedly connected to the middle of the connecting frame, the transmission block is threadedly connected to the transmission screw, the linear bearing is fixedly connected to the rear side of the connecting frame, and the linear bearing is slidably connected to the linear guide rail.

[0016] By adopting the above technical solution, the linear bearing slides up and down on the surface of the linear guide to position the connecting frame. At this time, as the transmission screw rotates, it drives the connecting frame to move up and down, thereby adjusting the height of the connecting frame.

[0017] Optionally, the front end of the connecting frame is slidably connected to two sets of limiting rods, the lower end of the limiting rods is fixedly connected to the mounting frame, and pressure rollers are rotatably connected to the lower sides of both the left and right ends of the mounting frame. The support spring is sleeved on the surface of the limiting rods, and the two ends of the support spring abut against the connecting frame and the mounting frame respectively.

[0018] By adopting the above technical solution, the support spring is used to buffer the pressure roller and prevent the pressure roller from pressing the nonwoven fabric roll too tightly.

[0019] Optionally, a fixing collar is sleeved on the upper end of the limiting rod, and a locking screw is threaded onto the surface of the fixing collar, with one inner end of the locking screw abutting against the surface of the limiting rod.

[0020] By adopting the above technical solution, the fixing collar and the limiting rod can be quickly separated, which facilitates the replacement of the pressure roller and allows for adjustment of the tension of the support spring.

[0021] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0022] 1. This utility model uses an electric motor and a transmission screw to continuously push the connecting frame downwards, so that the pressure roller and the surface of the nonwoven fabric roll are in close contact, maintaining the uniformity of pressure. The pressure roller will rotate as the nonwoven fabric roll is unwound. At the same time, the pressure applied to the pressure roller can be adjusted according to different types of nonwoven fabrics, thereby effectively avoiding wear on the nonwoven fabric roll and improving product quality.

[0023] 2. This utility model allows the fixing torsion spring to be removed by pressing both ends. At this time, the take-up drum can be removed. Then, the take-up drum with non-woven fabric wound around it is put back on the surface of the support shaft. The fixing torsion spring is then put back on the surface of the support shaft. Then, the two ends of the fixing torsion spring are loosened. At this time, the fixing torsion spring will be fixed on the surface of the support shaft, which limits the position of the take-up drum and the non-woven fabric roll, improving the convenience of replacing the non-woven fabric roll. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the support frame structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the support shaft structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the external structure of the adjustment frame of this utility model;

[0028] Figure 5 This is a schematic diagram of the internal structure of the adjustment frame of this utility model;

[0029] Figure 6 This is a schematic diagram of the connecting frame structure of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Support frame; 11. Fixed bearing; 12. Servo motor; 13. Connecting shaft; 14. Abutment plate; 15. Support shaft; 16. Fixed torsion spring; 17. Winding drum; 18. Non-woven fabric roll; 2. Adjusting frame; 21. Transmission screw; 22. Linear guide rail; 23. Electric motor; 3. Connecting frame; 31. Transmission block; 32. Linear bearing; 33. Limiting rod; 34. Mounting frame; 35. Pressure roller; 36. Support spring; 37. Fixed collar; 38. Locking screw. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0033] This utility model provides, for example Figures 1 to 3 The unwinding structure of the folding machine shown includes a support frame 1. An unwinding assembly is provided in the middle of the support frame 1. The unwinding assembly includes a fixed bearing 11, a servo motor 12, a connecting shaft 13, an abutment plate 14, a support shaft 15, and a fixed torsion spring 16. A take-up drum 17 is sleeved and connected to the surface of the support shaft 15. A non-woven fabric roll 18 is wound on the surface of the take-up drum 17. The fixed bearing 11 is fixed in the middle of the support frame 1. The connecting shaft 13 is connected to the fixed bearing 11. The servo motor 12 is fixedly installed on the rear side of the support frame 1. The output end of the servo motor 12 is fixedly connected to the rear end of the connecting shaft 13. The abutment plate 14 is fixedly connected to the front end of the connecting shaft 13. The support shaft 15 is fixedly connected to the center of the abutment plate 14. The fixed torsion spring 16 is sleeved on the surface of the support shaft 15.

[0034] During use, the output of the servo motor 12 drives the connecting shaft 13 to rotate, and the connecting shaft 13, in conjunction with the abutment plate 14, drives the support shaft 15 to rotate. The support shaft 15 drives the winding drum 17 and the non-woven fabric roll 18 to rotate, thereby unwinding the non-woven fabric roll 18.

[0035] In addition, when the nonwoven fabric roll 18 is used up, by pressing the two ends of the fixing torsion spring 16 inward, the fixing torsion spring 16 will expand, and it can be removed from the surface of the support shaft 15. Then, the take-up drum 17 is removed, and the take-up drum 17 with the nonwoven fabric roll 18 wound on it is re-sleeved onto the surface of the support shaft 15, and the rear end of the take-up drum 17 is pressed tightly against the surface of the abutment plate 14. Then, the two ends of the fixing torsion spring 16 are pressed, and it is re-sleeved onto the surface of the support shaft 15 and abuts against the front end of the take-up drum 17. After releasing the two ends of the fixing torsion spring 16, the fixing torsion spring 16 will be tightly fixed to the surface of the support shaft 15, thereby fixing the take-up drum 17 and the nonwoven fabric roll 18 to the surface of the support shaft 15, which facilitates the quick replacement of the nonwoven fabric roll 18 and improves the ease of use of the equipment.

[0036] See Figure 1 , Figures 4 to 6The upper end of the support frame 1 is equipped with a pressing assembly, which includes an adjusting frame 2, a transmission screw 21, a linear guide rail 22, an electric motor 23, a connecting frame 3, a transmission block 31, a linear bearing 32, a limit rod 33, a mounting frame 34, a pressure roller 35, and a support spring 36. The adjusting frame 2 is fixedly connected to the upper end of the support frame 1. The two ends of the transmission screw 21 are rotatably connected to the upper and lower inner walls of the adjusting frame 2 near the front side, respectively. The two ends of the linear guide rail 22 are fixedly connected to the upper and lower inner walls of the adjusting frame 2 near the rear side, respectively. The electric motor 23 is fixedly mounted on the upper end of the adjusting frame 2, and the output end of the electric motor 23 is fixedly connected to the upper end of the transmission screw 21. The transmission block 31 is connected to the connecting frame 1. The middle part of the frame 3 is fixedly connected, the transmission block 31 is threadedly connected to the transmission screw 21, the linear bearing 32 is fixedly connected to the rear side of the connecting frame 3, the linear bearing 32 is slidably connected to the linear guide rail 22, the front end of the connecting frame 3 is slidably connected to two sets of limit rods 33, the lower end of the limit rod 33 is fixedly connected to the mounting frame 34, the lower sides of the left and right ends of the mounting frame 34 are rotatably connected to pressure rollers 35, the support spring 36 is sleeved on the surface of the limit rod 33, the two ends of the support spring 36 abut against the connecting frame 3 and the mounting frame 34 respectively, the upper end of the limit rod 33 is sleeved and connected to a fixing collar 37, the surface of the fixing collar 37 is threadedly connected to a locking screw 38, and one end of the inner side of the locking screw 38 abuts against the surface of the limit rod 33.

[0037] Meanwhile, during the replacement of the nonwoven fabric roll 18, the electric motor 23 is first started to drive the transmission screw 21 to rotate clockwise, moving the connecting frame 3 to the uppermost position, and then moving the pressure roller 35 to the uppermost position. After the nonwoven fabric roll 18 is replaced, the electric motor 23 drives the transmission screw 21 to rotate counterclockwise, pushing the connecting frame 3 downward, and then pushing the pressure roller 35 downward, so that the pressure roller 35 abuts against the surface of the nonwoven fabric roll 18, further improving the convenience of replacing the nonwoven fabric roll 18. As the nonwoven fabric roll 18 continues to be unwound, the outer diameter of the nonwoven fabric roll 18 will gradually decrease. At this time, the electric motor 23 continuously pushes the connecting frame 3 downward during the unwinding process, and then continuously pushes the pressure roller 35 downward, so that the pressure roller 35 always abuts against the surface of the nonwoven fabric roll 18, effectively maintaining the uniformity of pressure, avoiding excessive or insufficient pressure on the nonwoven fabric roll 18, and improving the product production quality.

[0038] In addition, during use, the stiffness of the support spring 36 can be adjusted by sliding the limiting rod 33 up and down on the surface of the connecting frame 3, and the fixing collar 37 can be slid until it is tightly against the surface of the connecting frame 3. Then, tightening the locking screw 38 can fix the fixing collar 37 on the surface of the limiting rod 33, thereby keeping the support spring 36 at the required stiffness. According to the different elasticity of the non-woven fabric roll 18, the support spring 36 can be adjusted to different stiffnesses to further improve the adaptability of the equipment.

[0039] The working principle of this utility model is as follows: The electric motor 23, in conjunction with the transmission screw 21, continuously pushes the connecting frame 3 downward, so that the pressure roller 35 keeps in close contact with the surface of the nonwoven fabric roll 18, maintaining uniform pressure. The pressure roller 35 rotates as the nonwoven fabric roll 18 is unwound. At the same time, the pressure applied to the pressure roller 35 can be adjusted according to the type of nonwoven fabric, thereby effectively avoiding wear on the nonwoven fabric roll 18 and improving product quality. Meanwhile, by using the fixed torsion spring 16 to limit the position of the winding drum 17 and the nonwoven fabric roll 18, the convenience of replacing the nonwoven fabric roll 18 is improved.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A folding machine unwinding structure comprising a support frame (1), characterized in that: The support frame (1) is provided with an unwinding assembly in the middle. The unwinding assembly includes a fixed bearing (11), a servo motor (12), a connecting shaft (13), an abutment plate (14), a support shaft (15), and a fixed torsion spring (16). A take-up drum (17) is sleeved on the surface of the support shaft (15). A non-woven fabric roll (18) is wound on the surface of the take-up drum (17). The upper end of the support frame (1) is provided with a pressing assembly. The pressing assembly includes an adjusting frame (2), a transmission screw (21), a linear guide rail (22), an electric motor (23), a connecting frame (3), a transmission block (31), a linear bearing (32), a limit rod (33), a mounting frame (34), a pressure roller (35), and a support spring (36).

2. The folding machine unwinding structure according to claim 1, characterized in that: The fixed bearing (11) is fixed in the middle of the support frame (1), the connecting shaft (13) is connected to the fixed bearing (11), the servo motor (12) is fixedly installed on the rear side of the support frame (1), and the output end of the servo motor (12) is fixedly connected to the rear end of the connecting shaft (13).

3. The folding machine unwinding structure according to claim 1, characterized in that: The abutment plate (14) is fixedly connected to the front end of the connecting shaft (13), the support shaft (15) is fixedly connected to the center of the abutment plate (14), and the fixed torsion spring (16) is sleeved on the surface of the support shaft (15).

4. The unwinding structure of a folding machine according to claim 1, characterized in that: The upper end of the adjustment frame (2) is fixedly connected to the support frame (1). The two ends of the transmission screw (21) are rotatably connected to the upper and lower inner walls of the adjustment frame (2) near the front side. The two ends of the linear guide rail (22) are fixedly connected to the upper and lower inner walls of the adjustment frame (2) near the rear side.

5. The folding machine unwinding structure according to claim 4, characterized in that: The electric motor (23) is fixedly installed on the upper end of the adjusting frame (2), and the output end of the electric motor (23) is fixedly connected to the upper end of the transmission screw (21).

6. The folding machine unwinding structure according to claim 1, characterized in that: The transmission block (31) is fixedly connected to the middle of the connecting frame (3), the transmission block (31) is threadedly connected to the transmission screw (21), the linear bearing (32) is fixedly connected to the rear side of the connecting frame (3), and the linear bearing (32) is slidably connected to the linear guide rail (22).

7. The folding machine unwinding structure according to claim 1, characterized in that: Two sets of limiting rods (33) are slidably connected to the front end of the connecting frame (3). The lower end of the limiting rod (33) is fixedly connected to the mounting frame (34). Pressure rollers (35) are rotatably connected to the lower sides of both ends of the mounting frame (34). The support spring (36) is sleeved on the surface of the limiting rod (33). The two ends of the support spring (36) abut against the connecting frame (3) and the mounting frame (34) respectively.

8. The folding machine unwinding structure according to claim 7, characterized in that: The upper end of the limiting rod (33) is fitted with a fixing collar (37), and the surface of the fixing collar (37) is threaded with a locking screw (38). One end of the inner side of the locking screw (38) abuts against the surface of the limiting rod (33).

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