Novel sanitary product material speed change mechanism

Abstract

The invention discloses a novel sanitary product material speed change mechanism, which relates to the technical field of sanitary product production equipment, and comprises a rack, a frame and a middle rotating body, the middle rotating body comprises a central shaft, an inner rotating shaft sleeve and an outer rotating shaft sleeve; the inner rotating shaft sleeve comprises a first sub-shaft sleeve, a second sub-shaft sleeve and a third sub-shaft sleeve which are sequentially sleeved with one another; two ends of the outer rotating shaft sleeve are mounted at the outer end of the central shaft through mounting bearings; the first rotating frame, the second rotating frame and the third rotating frame penetrate through the central shaft and are arranged at an angle of 60 degrees, and the first rotating frame, the second rotating frame and the third rotating frame do the same periodic variable motion along the central shaft; the servo motor is arranged to change the speed of the air suction box, so that the air suction box is matched with the elastic waistline and the main material in speed, steering and conveying of the elastic waistline are guaranteed, the product quality is improved, and the rejection rate is reduced; compared with a traditional transfer mechanism, the manufacturing cost and the use and maintenance cost are reduced, and the service life of the mechanism is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of sanitary product production equipment, and more particularly to a novel sanitary product material speed changing mechanism. Background Art

[0002] During the production process of paper sanitary products (such as baby pull-up pants, adult incontinence pants, etc.), when the finished elastic waist is attached to the main material, it is often necessary to rotate the elastic waist 90° before completion (the transmission direction of the elastic waist and the main material are generally perpendicular); the waist transmission speed and the main material transmission speed are inconsistent, and ordinary elastic waist steering devices generally do not have the elastic waist speed change function. The steering and transmission stability of the elastic waist cannot be guaranteed, and it is impossible to ensure that the elastic waist matches the running speed of the main material, which will affect the composite accuracy of the elastic waist and the main material. The speed difference will cause corner folding, wrinkling and other phenomena, which will easily affect product quality and increase the scrap rate. Summary of the Invention

[0003] The purpose of the present invention is to solve the above technical problems and provide a novel speed change mechanism for sanitary materials.

[0004] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0005] A novel speed-changing mechanism for sanitary materials comprises a machine frame, a frame, and an intermediate rotating body, wherein one end of the intermediate rotating body is mounted on the machine frame and the other end is mounted on the frame; the top end of the frame is fixed on the machine frame;

[0006] The intermediate rotating body includes a central shaft, an inner rotating sleeve and an outer rotating sleeve:

[0007] The inner rotating shaft sleeve includes a first sub-shaft sleeve, a second sub-shaft sleeve and a third sub-shaft sleeve which are sequentially sleeved on each other. A fixed shaft sleeve is installed on the frame. Both ends of the fixed shaft sleeve are installed on the first sub-shaft sleeve through mounting bearings. Both ends of the first sub-shaft sleeve are installed on the second sub-shaft sleeve through mounting bearings. Both ends of the second sub-shaft sleeve are installed on the third sub-shaft sleeve through mounting bearings. Both ends of the third sub-shaft sleeve are installed on the inner end of the central shaft through mounting bearings.

[0008] Both ends of the outer rotating sleeve are mounted on the outer end of the central shaft through mounting bearings;

[0009] The first rotating frame, the second rotating frame and the third rotating frame pass through the central axis and are arranged at an angle of 60 degrees.

[0010] The first rotating frame, the second rotating frame and the third rotating frame all perform the same periodic speed-changing motion along the central axis.

[0011] The first rotating frame, the second rotating frame and the third rotating frame have the same structure and include two side plates and two connecting plates, the side plates are symmetrically arranged up and down, and two symmetrically arranged connecting plates are fixed between the side plates;

[0012] The outer rotating sleeve is provided with a first bearing, a second bearing and a third bearing from left to right at one end close to the frame;

[0013] The connecting plate on the left side of the first rotating frame is screwed to the first sub-shaft sleeve, and the connecting plate on the right side is connected to the first bearing;

[0014] The connecting plate on the left side of the second rotating frame is screwed to the second sub-shaft sleeve, and the connecting plate on the right side is connected to the second bearing;

[0015] The connecting plate on the left side of the third rotating frame is screw-connected to the third sub-axle sleeve, and the connecting plate on the right side is connected to the third bearing.

[0016] The side panels of the first rotating frame, the second rotating frame and the third rotating frame are all equipped with air suction boxes, and the outer rotating shaft sleeve is fixedly sleeved with an air distribution plate, and the circumferential wall of the air distribution plate has 6 air ducts evenly distributed around the circumference;

[0017] The air duct is a bent air duct structure, with the top end arranged on the peripheral wall of the air distribution plate and the side end arranged on the side wall of the air distribution plate, and both the top end and the side end are connected to the outside world;

[0018] The top of the air duct is connected to the air suction box in a one-to-one correspondence through a hose. The air duct is an air duct with the top end and the side end connected.

[0019] The suction box includes an upper part and a lower part, and the upper part and the lower part are connected by screws. The upper part and the lower part form an suction box with a cavity formed inside. A plurality of suction holes are provided on the upper surface, and a connecting hole is provided on the lower bottom. The connecting hole is connected with the cavity. The suction box and one end of the hose are connected through a connector. The bottom of the connector is fixedly mounted on the side panel. The interior of the connector is a cavity structure. An air inlet is provided on the top of the connector for correspondingly connecting with the connecting port on the bottom of the suction box. An air inlet is provided on the side wall of the connector for connecting with the hose. Both air inlets are connected with the inner cavity of the suction box.

[0020] The frame is provided with a connecting sleeve, and both ends of the connecting sleeve are rotatably connected to the central shaft through mounting bearings.

[0021] The connecting sleeve has a fixed connection to the outer wall of the connecting sleeve. The left wall of the connecting sleeve contacts the gas distribution plate. An arcuate groove is provided on the side of the connecting sleeve near the gas distribution plate, and a connection port is provided on the side of the connecting sleeve away from the gas distribution plate. The connection port is connected to the arcuate groove. The connection port is used to connect to a fan. When the fan is turned on, the suction box generates negative pressure to absorb and transfer the material.

[0022] The outer end of the central shaft is connected to the first pulley, the output shaft of the driving motor is connected to the second pulley, and the first pulley and the second pulley are connected by a belt. The driving motor is installed on the top of the frame.

[0023] The frame is provided with three servo motors, the servo motor output shaft is provided with a driving pulley, one end of the first sub-shaft sleeve, the second sub-shaft sleeve and the third sub-shaft sleeve are all provided with a passive pulley, and the driving pulley and the passive pulley are connected by a belt.

[0024] The suction box rotates 180 degrees from A to B, which is one cycle of the periodic speed change motion. The suction box rotates 180 degrees from B to A, which is the next cycle of the periodic speed change motion, and so on.

[0025] The periodic speed-changing motion includes the material receiving area, the acceleration area, the bonding area and the deceleration area;

[0026] The material receiving area is a low uniform speed area, and the waist patch on the transfer wheel is transferred by the suction box. The angle of rotation of the suction box in the material receiving area is θ1, and the linear speed of the suction box is V1;

[0027] The suction box in the acceleration zone performs uniform acceleration motion, and the linear velocity of the suction box accelerates from V1 to V2. The angle of rotation of the suction box in the acceleration zone is θ2;

[0028] The laminating area is a high-uniform speed area, where the waist patch is transferred to the main material through the suction box. The angle of the suction box in the laminating area is θ3, and the linear speed of the suction box is V2;

[0029] The air suction box performs uniform deceleration motion in the deceleration zone, and the linear velocity of the air suction box is decelerated from V2 to V1. The angle of rotation of the air suction box in the deceleration zone is θ4.

[0030] V1 and V2 satisfy the following relationship:

[0031] V1=a·V0,V2=b·V0;

[0032] Wherein, V0 is the average linear velocity of the periodic variable speed motion, a is the reduction ratio, a=0.53;

[0033] b is the acceleration ratio, b=1.6.

[0034] The θ1, θ2, θ3, and θ4 satisfy the following relationship:

[0035] θ1=30°, θ2=42°, θ3=55°, θ4=53°.

[0036] The beneficial effects of the present invention are as follows:

[0037] By setting a servo motor to change the speed of the suction box, the suction box, the elastic waist and the main material speed are matched, ensuring the steering and transmission of the elastic waist, improving product quality and reducing scrap rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of the present invention;

[0039] Figure 2 It is a partial right side view of the present invention;

[0040] Figure 3 is a top view of the present invention;

[0041] Figure 4 It is a schematic structural diagram of the cooperation among the first rotating frame, the second rotating frame and the third rotating frame;

[0042] Figure 5 It is a schematic diagram of the gas distribution panel structure;

[0043] Figure 6 It is a schematic diagram of the structure of the connecting gas disk;

[0044] Figure 7 It is a schematic diagram of the trajectory of the suction box performing a periodic speed change motion from A to B;

[0045] Figure 8 It is a structural diagram of the intermediate rotating body;

[0046] Figure 9 This is a structural diagram of the coordinated installation of the side panels and the connecting plates;

[0047] Figure 10 It is a stereoscopic view of the suction box;

[0048] Figure 11 This is a stereoscopic view of the suction box from another perspective.

[0049] Figure markings: 1. frame; 2. frame; 3. fan; 4. center shaft; 5. outer rotating sleeve; 6. first sub-sleeve; 7. second sub-sleeve; 8. third sub-sleeve; 9. fixed sleeve; 10. first rotating frame; 11. second rotating frame; 12. third rotating frame; 13. side plate; 14. connecting plate; 15. first bearing; 16. second bearing; 17. third bearing; 18. suction box; 19. air distribution disk; 20. air duct; 21. connecting sleeve; 22. arc groove; 23. connecting port; 24. first pulley; 25. drive motor; 26. second pulley; 27. servo motor; 28. active pulley; 29. passive pulley; 30. connecting air disk; 31. hose; 32. transfer wheel; 31. upper part; 32. lower part; 33. suction hole; 34. connecting hole; 35. connector; 36. air inlet. DETAILED DESCRIPTION

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0051] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0052] Example 1

[0053] like Figures 1 to 11 As shown, this embodiment provides a novel speed change mechanism for sanitary materials, comprising a frame 1, a frame 2, and an intermediate rotating body, one end of the intermediate rotating body being mounted on the frame 1 and the other end being mounted on the frame 2; the top end of the frame 2 being fixed on the frame 1;

[0054] The intermediate rotating body includes a central shaft 4, an inner rotating sleeve and an outer rotating sleeve 5:

[0055] The inner rotating sleeve includes a first sub-sleeve 6, a second sub-sleeve 7 and a third sub-sleeve 8 which are sequentially sleeved on each other. A fixed sleeve 9 is installed on the frame 1. Both ends of the fixed sleeve 9 are installed on the first sub-sleeve 6 through mounting bearings. Both ends of the first sub-sleeve 6 are installed on the second sub-sleeve 7 through mounting bearings. Both ends of the second sub-sleeve 7 are installed on the third sub-sleeve 8 through mounting bearings. Both ends of the third sub-sleeve 8 are installed on the inner end of the central shaft 4 through mounting bearings.

[0056] Both ends of the outer rotating sleeve 5 are mounted on the outer ends of the central shaft 4 through mounting bearings;

[0057] The first rotating frame 10, the second rotating frame 11 and the third rotating frame 12 pass through the central axis 4 and are arranged at an angle of 60 degrees.

[0058] The first rotating frame 10 , the second rotating frame 11 and the third rotating frame all perform the same periodic speed-changing motion along the central axis 4 .

[0059] The first rotating frame 10, the second rotating frame 11 and the third rotating frame 12 have the same structure and include two side plates 13 and two connecting plates 14. The side plates 13 are symmetrically arranged up and down, and two symmetrically arranged connecting plates 14 are fixed between the side plates 13.

[0060] The outer rotating sleeve 5 is provided with a first bearing 15, a second bearing 16 and a third bearing 17 from left to right at one end thereof close to the frame 1;

[0061] The connecting plate 14 on the left side of the first rotating frame 10 is screwed to the first sub-shaft sleeve 6, and the connecting plate 14 on the right side is connected to the first bearing 15;

[0062] The connecting plate 14 on the left side of the second rotating frame 11 is screwed to the second sub-shaft sleeve 7, and the connecting plate 14 on the right side is connected to the second bearing 16;

[0063] The connecting plate 14 on the left side of the third rotating frame 12 is screwed to the third sub-shaft sleeve 8 , and the connecting plate 14 on the right side is connected to the third bearing 17 .

[0064] The side panels 13 of the first rotating frame 10, the second rotating frame 11 and the third rotating frame 12 are all equipped with air suction boxes 18. The outer rotating sleeve 5 is fixedly sleeved with an air distribution plate 19. The air distribution plate 19 has six air passages 20 evenly distributed around its circumference.

[0065] The air duct 20 is a bent air duct structure, with the top end provided on the peripheral wall of the air distribution plate 19 and the side end provided on the side wall of the air distribution plate 19, and both the top end and the side end are connected to the outside world;

[0066] The top of the air duct 20 is connected to the air suction box 18 in a one-to-one correspondence through a hose 31. The air duct 20 is an air duct that is communicated with the top and the side.

[0067] The suction box 18 includes an upper part 31 and a lower part 32, and the upper part 31 and the lower part 32 are connected by screws. The upper part 31 and the lower part 32 form an suction box 18 with a cavity formed inside. A plurality of suction holes 33 are provided on the surface of the upper part 31, and a connecting hole 34 is provided at the bottom of the lower part 32. The connecting hole 34 is connected to the cavity. The suction box 18 and one end of the hose 31 are connected through a connector 35. The bottom of the connector 35 is fixedly mounted on the side panel 13. The interior of the connector 35 is a cavity structure. An air inlet 36 is provided at the top of the connector 35 for corresponding connection with the connecting port 23 at the bottom of the suction box 18. An air inlet 36 is provided on the side wall of the connector 35 for connecting to the hose 31. Both air inlets 36 are connected to the inner cavity of the suction box 18.

[0068] The frame 2 is provided with a connecting sleeve 21 , and both ends of the connecting sleeve 21 are rotatably connected to the central shaft 4 via mounting bearings.

[0069] The outer wall of the connecting sleeve 21 is fixedly sleeved with a connecting air disc 30. The left wall of the connecting air disc 30 contacts the gas distribution disc 19. The side of the connecting air disc 30 close to the gas distribution disc 19 is provided with an arcuate groove 22. The side of the connecting air disc 30 away from the gas distribution disc 19 is provided with a connecting port 23, which is connected to the arcuate groove 22. The connecting port 23 is used to connect to the fan 3. When the fan 3 is turned on, the suction box 18 generates negative pressure to absorb and transfer the material.

[0070] The outer end of the central shaft 4 is connected to the first pulley 24, and the output shaft of the drive motor 25 is connected to the second pulley 26. The first pulley 24 and the second pulley 26 are connected by a belt. The drive motor 25 is installed on the top of the frame 2.

[0071] The frame 1 is provided with three servo motors 27, and the output shaft of the servo motor 27 is provided with a driving pulley 28. One end of the first sub-shaft sleeve 6, the second sub-shaft sleeve 7 and the third sub-shaft sleeve 8 is provided with a passive pulley 29, and the driving pulley 28 and the passive pulley 29 are connected by a belt.

[0072] The suction box 18 rotates 180 degrees from A to B for one cycle of the periodic speed change motion, and the suction box 18 rotates 180 degrees from B to A to repeat the next cycle of the periodic speed change motion, and so on.

[0073] The periodic speed-changing motion includes the material receiving area, the acceleration area, the bonding area and the deceleration area;

[0074] The material receiving area is a low uniform speed area, and the waist patch on the transfer wheel 32 is transferred by the suction box 18. The angle of rotation of the suction box 18 in the material receiving area is θ1, and the linear speed of the suction box 18 is V1;

[0075] The suction box 18 performs uniform acceleration in the acceleration zone, and the linear velocity of the suction box 18 is accelerated from V1 to V2. The angle of rotation of the suction box 18 in the acceleration zone is θ2.

[0076] The laminating area is a high uniform speed area, where the waist patch is transferred to the main material through the suction box 18. The angle of rotation of the suction box 18 in the laminating area is θ3, and the linear speed of the suction box 18 is V2;

[0077] In the deceleration zone, the air suction box 18 performs uniform deceleration motion, and the linear velocity of the air suction box 18 is decelerated from V2 to V1. The angle rotated by the air suction box 18 in the deceleration zone is θ4.

[0078] V1 and V2 satisfy the following relationship:

[0079] V1=a·V0,V2=b·V0;

[0080] Wherein, V0 is the average linear velocity of the periodic variable speed motion, a is the reduction ratio, a=0.53;

[0081] b is the acceleration ratio, b=1.6.

[0082] The θ1, θ2, θ3, and θ4 satisfy the following relationship:

[0083] θ1=30°, θ2=42°, θ3=55°, θ4=53°.

Claims

1. A novel speed-changing mechanism for sanitary materials, comprising a frame, a frame, and an intermediate rotating body, wherein one end of the intermediate rotating body is mounted on the frame and the other end is mounted on the frame; the top end of the frame is fixed to the frame; and the characteristics are: The intermediate rotating body includes a central shaft, an inner rotating sleeve and an outer rotating sleeve: The inner rotating shaft sleeve includes a first sub-shaft sleeve, a second sub-shaft sleeve and a third sub-shaft sleeve which are sequentially sleeved on each other. A fixed shaft sleeve is installed on the frame. Both ends of the fixed shaft sleeve are installed on the first sub-shaft sleeve through mounting bearings. Both ends of the first sub-shaft sleeve are installed on the second sub-shaft sleeve through mounting bearings. Both ends of the second sub-shaft sleeve are installed on the third sub-shaft sleeve through mounting bearings. Both ends of the third sub-shaft sleeve are installed on the inner end of the central shaft through mounting bearings. Both ends of the outer rotating sleeve are mounted on the outer end of the central shaft through mounting bearings; The first rotating frame, the second rotating frame and the third rotating frame pass through the central axis and are arranged at an angle of 60 degrees. The first rotating frame, the second rotating frame and the third rotating frame all perform the same periodic speed-changing motion along the central axis.

2. The novel speed change mechanism for health care materials according to claim 1 is characterized in that: The first rotating frame, the second rotating frame and the third rotating frame have the same structure and include two side plates and two connecting plates, the side plates are symmetrically arranged up and down, and two symmetrically arranged connecting plates are fixed between the side plates; The outer rotating sleeve is provided with a first bearing, a second bearing and a third bearing from left to right at one end close to the frame; The connecting plate on the left side of the first rotating frame is screwed to the first sub-shaft sleeve, and the connecting plate on the right side is connected to the first bearing; The connecting plate on the left side of the second rotating frame is screwed to the second sub-shaft sleeve, and the connecting plate on the right side is connected to the second bearing; The connecting plate on the left side of the third rotating frame is screw-connected to the third sub-axle sleeve, and the connecting plate on the right side is connected to the third bearing.

3. The novel speed change mechanism for health care materials according to claim 2 is characterized in that: The side panels of the first rotating frame, the second rotating frame and the third rotating frame are all equipped with air suction boxes, and the outer rotating shaft sleeve is fixedly sleeved with an air distribution plate, and the circumferential wall of the air distribution plate has 6 air ducts evenly distributed around the circumference; The air duct is a bent air duct structure, with the top end arranged on the peripheral wall of the air distribution plate and the side end arranged on the side wall of the air distribution plate, and both the top end and the side end are connected to the outside world; The top end of the ventilation channel is connected to the air suction box in a one-to-one correspondence through a hose.

4. The novel speed change mechanism for health care materials according to claim 3 is characterized in that: The frame is provided with a connecting sleeve, and both ends of the connecting sleeve are rotatably connected to the central shaft through mounting bearings.

5. The novel speed change mechanism for health care materials according to claim 4 is characterized in that: The outer wall of the connecting shaft sleeve is fixedly sleeved with a connecting air disk, the left wall of the connecting air disk is in contact with the gas distribution disk, an arc groove is provided on the side of the connecting air disk close to the gas distribution disk, and a connecting port is provided on the side of the connecting air disk away from the gas distribution disk, and the connecting port is connected to the arc groove.

6. The novel speed change mechanism for health care materials according to claim 5, characterized in that: The outer end of the central shaft is connected to the first pulley, the output shaft of the driving motor is connected to the second pulley, and the first pulley and the second pulley are connected through a belt.

7. The novel speed-changing mechanism for sanitary materials according to claim 6, characterized in that: The frame is provided with three servo motors, the servo motor output shaft is provided with a driving pulley, one end of the first sub-shaft sleeve, the second sub-shaft sleeve and the third sub-shaft sleeve are all provided with a passive pulley, and the driving pulley and the passive pulley are connected by a belt.

8. The novel speed change mechanism for sanitary materials according to claim 1 is characterized in that: The suction box rotates 180 degrees from A to B, which is one cycle of the periodic speed change motion. The suction box rotates 180 degrees from B to A, which is the next cycle of the periodic speed change motion, and so on. The periodic speed-changing motion includes the material receiving area, the acceleration area, the bonding area and the deceleration area; The material receiving area is a low uniform speed area, and the waist patch on the transfer wheel is transferred by the suction box. The angle of rotation of the suction box in the material receiving area is θ1, and the linear speed of the suction box is V1; The suction box in the acceleration zone performs uniform acceleration motion, and the linear velocity of the suction box accelerates from V1 to V2. The angle of rotation of the suction box in the acceleration zone is θ2; The laminating area is a high-uniform speed area, where the waist patch is transferred to the main material through the suction box. The angle of the suction box in the laminating area is θ3, and the linear speed of the suction box is V2; The air suction box performs uniform deceleration motion in the deceleration zone, and the linear velocity of the air suction box is decelerated from V2 to V1. The angle of rotation of the air suction box in the deceleration zone is θ4.

9. The novel sanitary material speed change mechanism according to claim 8, characterized in that: V1 and V2 satisfy the following relationship: V1=a·V0,V2=b·V0; Wherein, V0 is the average linear velocity of the periodic variable speed motion, a is the reduction ratio, a=0.53; b is the acceleration ratio, b=1.

6.

10. The novel speed change mechanism for sanitary materials according to claim 8, characterized in that: The θ1, θ2, θ3, and θ4 satisfy the following relationship: θ1=30°, θ2=42°, θ3=55°, θ4=53°.

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